10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2020

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from __________to__________

Commission File Number 001-36352

AKEBIA THERAPEUTICS, INC.

(Exact name of registrant as specified in its charter)

Delaware	20-8756903
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
245 First Street , Cambridge, MA	02142
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code: (617) 871-2098

n/a

(Former name, former address and formal fiscal year, if changed since last report)

Securities registered pursuant to Section 12(b) of the Act:
Title of each class	Trading symbol(s)	Name of each exchange on which registered
Common Stock, par value $0.00001 per share	AKBA	The Nasdaq Global Market

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  ý    No  ¨

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yes  ý    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	¨	Accelerated filer	ý
Non-accelerated filer	¨	Smaller reporting company	☐
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Indicate by check mark whether registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ☐    No  ý

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.

Outstanding at July 31, 2020

143,317,407

NOTE REGARDING FORWARD-LOOKING STATEMENTS

This Quarterly Report on Form 10-Q contains forward-looking statements that are being made pursuant to the provisions of the U.S. Private Securities Litigation Reform Act of 1995 with the intention of obtaining the benefits of the “safe harbor” provisions of that Act. All statements contained in this Quarterly Report on Form 10‑Q other than statements of historical fact are forward-looking statements. These forward-looking statements may be accompanied by words such as “anticipate,” “believe,” “build,” “can,” “contemplate,” “continue,” “could,” “should,” “designed,” “estimate,” “project,” “expect,” “forecast,” “future,” “goal,” “intend,” “likely,” “may,” “plan,” “possible,” “potential,” “predict,” “strategy,” “seek,” “target,” “will,” “would,” and other words and terms of similar meaning, but the absence of these words does not necessarily mean that a statement is not forward-looking. These forward-looking statements include, but are not limited to, statements about:

•the potential direct or indirect impact of the coronavirus 2 (SARS-CoV-2) pandemic on our business, operations, and the markets and communities in which we and our partners, collaborators, vendors and customers operate;

•the potential therapeutic benefits, safety profile, and effectiveness of our product candidates, including the potential for vadadustat to set a new standard of care in the treatment of anemia due to chronic kidney disease; 

•the timing, investment and associated activities involved in continued commercialization of Auryxia^® (ferric citrate);

•the potential indications, demand and market potential and acceptance of our product and product candidates, including our estimates regarding the potential market opportunity for Auryxia, vadadustat or any other product candidates and the size of eligible patient populations; 

•the potential therapeutic applications of the hypoxia inducible factor pathway; 

•our pipeline, including its potential, and our research and development activities; 

•our competitive position, including estimates, developments and projections relating to our competitors and their products and product candidates, and our industry; 

•our expectations with respect to (i) the anticipated financial impact and potential benefits to us related to our merger with Keryx Biopharmaceuticals, Inc. that was completed on December 12, 2018, (ii) integration of the businesses subsequent to the merger, and (iii) other matters related to the merger;

•our expectations, projections and estimates regarding our capital requirements, need for additional capital, financing our future cash needs, costs, expenses, revenues, capital resources, cash flows, financial performance, profitability, tax obligations, liquidity, growth, contractual obligations, the period of time our cash resources and collaboration funding will fund our current operating plan, internal control over financial reporting and remediation of any deficiencies, and disclosure controls and procedures; 

•estimates, beliefs and judgments related to the valuation of intangible assets, goodwill, contingent consideration, debt and other assets and liabilities, including our impairment analysis and our methodology and assumptions regarding fair value measurements;

•the timing of the availability and disclosure of clinical trial data and results, including with respect to the top-line data readout of our PRO₂TECT studies;  

•our and our collaborators’ strategy, plans and expectations with respect to the development, manufacturing, commercialization, launch, marketing and sale of our product candidates, and the associated timing thereof; 

•the designs of our studies, and the type of information and data expected from our studies and the expected benefits thereof; 

•the timing of or likelihood of regulatory filings and approvals, including labeling or other restrictions; 

•our ability to maintain any marketing authorizations we currently hold or will obtain, including our marketing authorizations for Auryxia and our ability to complete post-marketing requirements with respect thereto;

•our ability to negotiate, secure and maintain adequate pricing, coverage and reimbursement terms and processes on a timely basis, or at all, with third-party payors for Auryxia or any other product candidate that may be approved;

•the targeted timing of enrollment of our clinical trials; 

•the timing of initiation of our clinical trials and plans to conduct preclinical and clinical studies in the future; 

•the timing and amounts of payments from or to our collaborators and licensees, and the anticipated arrangements and benefits under our collaboration and license agreements, including with respect to milestones and royalties; 

•our intellectual property position, including obtaining and maintaining patents, and the timing, outcome and impact of administrative, regulatory, legal and other proceedings relating to our patents and other proprietary and intellectual property rights, as well as Abbreviated New Drug Applications filed by generic drug manufacturers and potential U.S. Food and Drug Administration approval thereof, and associated patent infringement suits that we have filed or may file, or other actions that we may take against such companies, and the timing and resolution thereof;  

•expected reliance on third parties, including with respect to the development, manufacturing, supply and commercialization of our product and product candidates;

•accounting standards and estimates, their impact, and their expected timing of completion;

•estimated periods of performance of key contracts;  

•our facilities, lease commitments, and future availability of facilities;  

•cybersecurity;

•insurance coverage;

•our employees, including our management team, employee compensation, employee relations, and our ability to attract and retain high quality employees;

•the implementation of our business model, current operating plan, and strategic plans for our business, product candidates and technology, and business development opportunities including potential collaborations, alliances, mergers, acquisitions or licensing of assets; and

•the timing, outcome and impact of current and any future legal proceedings.

Any or all of these forward-looking statements in this Quarterly Report on Form 10-Q may turn out to be inaccurate. These forward-looking statements involve risks and uncertainties, including those that are described in Part II, Item 1A. Risk Factors included in this Quarterly Report on Form 10-Q and elsewhere in this Quarterly Report on Form 10-Q, that could cause our actual results, financial condition, performance or achievements to be materially different from those indicated in these forward-looking statements. Given these risks and uncertainties, you should not place undue reliance on these forward-looking statements. Forward-looking statements speak only as of the date of this Quarterly Report on Form 10-Q. Except as required by law, we assume no obligation to publicly update or revise these forward-looking statements for any reason. Unless otherwise stated, our forward-looking statements do not reflect the potential impact of any future acquisitions, mergers, dispositions, joint ventures or investments we may make.

This Quarterly Report on Form 10-Q also contains estimates and other information concerning our industry and the markets for certain diseases, including data regarding the estimated size of those markets, and the incidence and prevalence of certain medical conditions. Unless otherwise expressly stated, we obtained this industry, market and other data from reports, research surveys, studies and similar data prepared by market research firms and other third parties, industry, medical and general publications, government data and similar sources.

In this Quarterly Report on Form 10-Q, unless otherwise stated or the context otherwise requires, references to “Akebia,” “we,” “us,” “our,” “the Company,” and similar references refer to Akebia Therapeutics, Inc. and, where appropriate, its subsidiaries, including Keryx.

AURYXIA^®, AKEBIA^® Therapeutics, VAFSEO^TM and their associated logos are trademarks of Akebia and/or its affiliates. All other trademarks, trade names and service marks appearing in this Quarterly Report on Form 10-Q are the property of their respective owners. All website addresses given in this Quarterly Report on Form 10-Q are for information only and are not intended to be an active link or to incorporate any website information into this document.

Akebia Therapeutics, Inc.

Table of Contents

Part I. Financial Information
Item 1 – Financial Statements (Unaudited)
Condensed Consolidated Balance Sheets as of June 30, 2020 and December 31, 2019	5
Condensed Consolidated Statements of Operations and Comprehensive Loss for the Three and Six Months Ended June 30, 2020 and 2019	6
Condensed Consolidated Statements of Stockholders’ Equity for the Three and Six Months Ended June 30, 2020 and 2019	7
Condensed Consolidated Statements of Cash Flows for the Six Months Ended June 30, 2020 and 2019	8
Notes to Condensed Consolidated Financial Statements	9
Item 2 – Management’s Discussion and Analysis of Financial Condition and Results of Operations	48
Item 3 – Quantitative and Qualitative Disclosures about Market Risk	64
Item 4 – Controls and Procedures	64
Part II. Other Information	66
Item 1 – Legal Proceedings	66
Item 1A – Risk Factors	70
Item 2 – Unregistered Sales of Equity Securities and Use of Proceeds	122
Item 3 – Defaults Upon Senior Securities	122
Item 4 – Mine Safety Disclosures	122
Item 5 – Other Information	122
Item 6 – Exhibits	124
Signatures	125

PART I—FINANCIAL INFORMATION

Item 1.  Financial Statements.

AKEBIA THERAPEUTICS, INC.

Condensed Consolidated Balance Sheets

(Unaudited)

(in thousands, except share and per share data)

	June 30, 2020		December 31, 2019
Assets
Current assets:
Cash and cash equivalents	$	245,406	$	147,449
Available for sale securities	49,943		245
Inventory	104,603		116,349
Accounts receivable, net	39,115		38,864
Prepaid expenses and other current assets	10,035		6,626
Total current assets	449,102		309,533
Property and equipment, net	9,380		10,380
Operating lease assets	26,884		29,038
Goodwill	55,053		55,053
Other intangible assets, net	157,484		291,212
Other assets	47,271		75,985
Total assets	$	745,174	$	771,201
Liabilities and stockholders' equity
Current liabilities:
Accounts payable	$	29,413	$	39,217
Accrued expenses and other current liabilities	142,832		129,071
Short-term deferred revenue	23,529		39,830
Total current liabilities	195,774		208,118
Deferred revenue, net of current portion	34,542		33,120
Operating lease liabilities, net of current portion	24,862		27,528
Derivative liability	1,890		1,650
Long-term debt, net	76,338		75,805
Other non-current liabilities	41,508		30,223
Total liabilities	374,914		376,444
Commitments and contingencies (Note 14)
Stockholders' equity:
Preferred stock $0.00001 par value, 25,000,000 shares authorized; 0 shares issued and    outstanding at June 30, 2020 and December 31, 2019	—		—
Common stock $0.00001 par value; 350,000,000 and 175,000,000 shares authorized at June 30,    2020 and December 31, 2019, respectively; 143,129,409 and 121,674,568 shares issued and    outstanding at June 30, 2020 and December 31, 2019, respectively	1		1
Additional paid-in capital	1,400,820		1,188,810
Accumulated other comprehensive loss	(9)		—
Accumulated deficit	(1,030,552)		(794,054)
Total stockholders' equity	370,260		394,757
Total liabilities and stockholders' equity	$	745,174	$	771,201

See accompanying notes to unaudited condensed consolidated financial statements.

5

AKEBIA THERAPEUTICS, INC.

Condensed Consolidated Statements of Operations and Comprehensive Loss

(Unaudited)

(in thousands, except share and per share data)

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
Revenues:
Product revenue, net	$	30,696	$	29,089	$	59,905	$	52,200
License, collaboration and other revenue	59,446		71,714		118,715		121,269
Total revenues	90,142		100,803		178,620		173,469
Cost of goods sold:
Product	49,988		28,569		68,601		50,726
Amortization of intangibles	9,101		9,100		18,201		18,200
Impairment of intangible asset	115,527		—		115,527		—
Total cost of goods sold	174,616		37,669		202,329		68,926
Operating expenses:
Research and development	52,819		85,694		134,050		168,045
Selling, general and administrative	35,482		36,068		73,465		70,359
License expense	1,044		895		1,720		1,631
Total operating expenses	89,345		122,657		209,235		240,035
Operating loss	(173,819)		(59,523)		(232,944)		(135,492)
Other income (expense):
Interest income (expense)	(2,308)		485		(4,280)		1,354
Other income (expense)	376		23		726		(55)
Net loss before income taxes	(175,751)		(59,015)		(236,498)		(134,193)
Benefit from income taxes	—		(845)		—		(3,602)
Net loss	$	(175,751)	$	(58,170)	$	(236,498)	$	(130,591)
Net loss per share - basic and diluted	$	(1.28)	$	(0.49)	$	(1.78)	$	(1.11)
Weighted-average number of common shares - basic and diluted	136,906,968		118,268,832		132,651,066		117,669,422
Comprehensive loss:
Net loss	$	(175,751)	$	(58,170)	$	(236,498)	$	(130,591)
Other comprehensive gain (loss) - unrealized gain (loss) on debt securities	(9)		59		(9)		284
Total comprehensive loss	$	(175,760)	$	(58,111)	$	(236,507)	$	(130,307)

See accompanying notes to unaudited condensed consolidated financial statements.

6

AKEBIA THERAPEUTICS, INC.

Condensed Consolidated Statements of Stockholders’ Equity

(Unaudited)

(in thousands, except share data)

	Common Stock
	Number of Shares	$0.00001 Par Value		Additional Paid-In Capital		Unrealized Gain/(Loss)		Accumulated Deficit		Total Stockholders' Equity
Balance at December 31, 2018	116,887,518	$	1	$	1,150,583	$	(261)	$	(514,395)	$	635,928
Proceeds from sale of stock under    employee stock purchase plan	39,977	—		188		—		—		188
Exercise of options	62,204	—		365		—		—		365
Share-based compensation expense	—	—		2,094		—		—		2,094
Restricted stock unit vesting	132,563	—		—		—		—		—
Unrealized gain	—	—		—		225		—		225
Net loss	—	—		—		—		(72,421)		(72,421)
Balance at March 31, 2019	117,122,262	$	1	$	1,153,230	$	(36)	$	(586,816)	$	566,379
Issuance of common stock, net of    issuance costs	1,384,520	—		9,035		—		—		9,035
Exercise of options	300,592	—		195		—		—		195
Retired shares	(55,324)	—		(426)		—		—		(426)
Share-based compensation expense	—	—		2,284		—		—		2,284
Restricted stock unit vesting	35,251	—		—		—		—		—
Unrealized gain	—	—		—		59		—		59
Net loss	—	—		—		—		(58,170)		(58,170)
Balance at June 30, 2019	118,787,301	$	1	$	1,164,318	$	23	$	(644,986)	$	519,356
Balance at December 31, 2019	121,674,568	$	1	$	1,188,810	—		$	(794,054)	$	394,757
Issuance of common stock, net of    issuance costs	7,973,967	—		56,575		—		—		56,575
Proceeds from sale of stock under    employee stock purchase plan	115,024	—		451		—		—		451
Share-based compensation expense	—	—		4,916		—		—		4,916
Exercise of options	64,126	—		412		—		—		412
Restricted stock unit vesting	423,755	—		—		—		—		—
Net loss	—	—		—		—		(60,747)		(60,747)
Balance at March 31, 2020	130,251,440	$	1	$	1,251,164	$	—	$	(854,801)	$	396,364
Issuance of common stock, net of    issuance costs	12,650,000	$	—	$	142,383	$	—	$	—	$	142,383
Share-based compensation expense	—	$	—	$	6,864	$	—	$	—	$	6,864
Exercise of options	48,103	$	—	$	409	$	—	$	—	$	409
Restricted stock unit vesting	179,866	$	—	$	—	$	—	$	—	$	—
Unrealized loss	—	$	—	$	—	$	(9)	$	—	$	(9)
Net loss	—	$	—	$	—	$	—	$	(175,751)	$	(175,751)
Balance at June 30, 2020	143,129,409	$	1	$	1,400,820	$	(9)	$	(1,030,552)	$	370,260

See accompanying notes to unaudited condensed consolidated financial statements

7

AKEBIA THERAPEUTICS, INC.

Condensed Consolidated Statements of Cash Flows

(Unaudited)

(in thousands)

	Six Months Ended
	June 30, 2020		June 30, 2019
Operating activities:
Net loss	$	(236,498)	$	(130,591)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	1,045		1,026
Amortization of intangibles	18,201		18,200
Intangible asset impairment charge	115,527		—
Amortization of premium/discount on investments	(2)		(685)
Non-cash interest expense	872		339
Non-cash operating lease expense	(1,164)		(1,097)
Fair value step-up of inventory sold or written off	31,116		33,587
Write-down of inventory	10,089		3,023
Change in excess inventory purchase commitments	10,954		—
Stock-based compensation	11,780		4,378
Deferred income taxes	—		(3,602)
Change in fair value of derivative liability	240		—
Changes in operating assets and liabilities:
Accounts receivable	(251)		(12,222)
Inventory	(5,680)		(17,188)
Prepaid expenses and other current assets	(3,277)		(11,337)
Other long-term assets	57		3,371
Accounts payable	(4,979)		(19,628)
Accrued expense	13,611		(28,126)
Operating lease liabilities	869		1,072
Deferred revenue	(14,879)		(16,815)
Net cash used in operating activities	(52,369)		(176,295)
Investing activities:
Purchase of equipment	(45)		(3,906)
Purchase of available for sale securities	(49,950)		—
Proceeds from the maturities of available for sale securities	245		103,691
Proceeds from sales of available for sale securities	—		64,721
Net cash provided by (used in) investing activities	(49,750)		164,506
Financing activities:
Proceeds from the issuance of common stock, net of issuance costs	198,883		9,035
Proceeds from the sale of stock under employee stock purchase plan	451		188
Proceeds from the exercise of stock options	821		560
Retirement of treasury stock	—		(426)
Payments on debt	—		(15,000)
Net cash provided by (used in) financing activities	200,155		(5,643)
Increase (decrease) in cash, cash equivalents, and restricted cash	98,036		(17,432)
Cash, cash equivalents, and restricted cash at beginning of the period	149,804		107,099
Cash, cash equivalents, and restricted cash at end of the period	$	247,840	$	89,667
Non-cash financing activities
Unpaid offering costs	$	75	$	—

See accompanying notes to unaudited condensed consolidated financial statements

8

Akebia Therapeutics, Inc.

Notes to Condensed Consolidated Financial Statements

(Unaudited)

1.Nature of Organization and Operations

Akebia Therapeutics, Inc., referred to as Akebia or the Company, was incorporated in the State of Delaware in 2007. Akebia is a biopharmaceutical company with the purpose of bettering the lives of people living with kidney disease. Akebia’s lead investigational product candidate, vadadustat, is an oral therapy in Phase 3 development. The Company believes vadadustat has the potential to set a new standard of care in the treatment of anemia due to chronic kidney disease, or CKD, acting via a novel hypoxia inducible factor, or HIF, pathway. HIF is the primary regulator of the production of red blood cells, or RBCs, in the body, as well as other important metabolic functions. In June 2020, vadadustat was approved in Japan as a treatment for anemia due to CKD in both dialysis-dependent and non-dialysis dependent adult patients under the trade name VAFSEO. In addition to vadadustat, the Company has a commercial product, Auryxia® (ferric citrate), which is currently approved by the U.S. Food and Drug Administration, or FDA, and marketed for two indications in the United States: the control of serum phosphorus levels in adult patients with CKD on dialysis, or DD-CKD, and the treatment of iron deficiency anemia, or IDA, in adult patients with CKD not on dialysis, or NDD-CKD. Ferric citrate is also approved and marketed in Japan as an oral treatment for the improvement of hyperphosphatemia in patients with DD-CKD and NDD-CKD under the trade name Riona® (ferric citrate hydrate).

Since inception, the Company has devoted most of its resources to research and development, including its preclinical and clinical development activities, and providing general and administrative support for these operations. The Company began recording revenue from the U.S. sales of Auryxia and revenue from sublicensing rights to Auryxia in Japan to the Company’s Japanese partners Japan Tobacco, Inc. and its subsidiary Torii Pharmaceutical Co., Ltd., collectively, JT and Torii, on December 12, 2018 following the consummation of a merger with Keryx Biopharmaceuticals, Inc., or Keryx, or the Merger. Additionally, following regulatory approval of vadadustat in Japan in the second quarter of 2020, the Company is eligible to receive royalty revenues of up to 20% from Mitsubishi Tanabe Pharma Corporation, or MTPC, from the sale of VAFSEO. The Company has not generated a profit to date and may never generate profits from product sales. The Company’s product candidates are subject to long development cycles, and the Company may be unsuccessful in its efforts to develop, obtain marketing approval for or market its product candidates. If the Company does not successfully commercialize any of its products or product candidates, it may be unable to achieve profitability.

The Company’s management completed its going concern assessment in accordance with ASC 205-40, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern, or ASC 205-40. The Company believes that its cash resources will be sufficient to allow the Company to fund its current operating plan beyond the next twelve months from the filing of this Quarterly Report on Form 10-Q, as required by ASC 205-40. There can be no assurance, however, that the current operating plan will be achieved in the time frame anticipated by the Company, or that its cash resources will fund the Company’s operating plan for the period anticipated by the Company or that additional funding will be available on terms acceptable to the Company, or at all. The Company will require additional capital to pursue development and commercial activities related to expanded indications for current products and any additional products and product candidates. The Company expects to finance future cash needs through product revenue, public or private equity or debt transactions, payments from its collaborators, royalty transactions, strategic transactions, or a combination of these approaches. However, adequate additional financing may not be available to the Company on acceptable terms, or at all. If the Company is unable to raise capital in sufficient amounts when needed or on attractive terms, it may not be able to pursue development and commercial activities related to expanded indications for current products and any additional products and product candidates.

2.Summary of Significant Accounting Policies

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the U.S., or GAAP, for interim financial reporting and as required by Regulation S-X, Rule 10-01. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. Any reference in these notes to applicable guidance is meant to refer to the authoritative U.S. GAAP as found in the Accounting Standards Codification, or ASC, and Accounting Standards Update, or ASU, of the Financial Accounting Standards Board, or FASB.

9

In the opinion of management, all adjustments, consisting of normal recurring accruals and revisions of estimates, considered necessary for a fair presentation of the unaudited condensed consolidated financial statements have been included. Interim results for the three and six months ended June 30, 2020 are not necessarily indicative of the results that may be expected for the fiscal year ending December 31, 2020 or any other future period.

The accompanying unaudited condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. Management has determined that the Company operates in one segment, which is the business of developing and commercializing novel therapeutics for people with kidney disease. The information included in this Quarterly Report on Form 10-Q should be read in conjunction with the Company’s consolidated financial statements and the accompanying notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019 filed with the U.S. Securities and Exchange Commission on March 12, 2020, or the 2019 Annual Report on Form 10-K.

The significant accounting policies used in preparation of these unaudited condensed consolidated financial statements for the three and six months ended June 30, 2020 are consistent with those discussed in Note 2 to the consolidated financial statements in the Company’s 2019 Annual Report on Form 10-K and are updated below as necessary.

New Accounting Pronouncements – Recently Adopted

In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which requires that financial assets measured at amortized cost be presented at the net amount expected to be collected. Previously, U.S. GAAP delayed recognition of the full amount of credit losses until the loss was probable of occurring. Under this ASU, the income statement will reflect an entity’s current estimate of all expected credit losses. The Company adopted this new standard on January 1, 2020 using the modified retrospective approach, which requires a cumulative-effect adjustment, if any, to the opening balance of retained earnings to be recognized on the date of adoption with prior periods not restated. The cumulative-effect adjustment recorded on January 1, 2020, is not material. Please see the description of the Company’s “Credit Losses” accounting policy in the “Significant Accounting Policies” section below.

In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement, which modifies the disclosure requirements for fair value measurements. The Company adopted this new standard on January 1, 2020 using the prospective approach for amendments applicable to the Company. The adoption of this standard did not have a material impact on the Company’s unaudited condensed consolidated financial statements and related disclosures.

In August 2018, the FASB issued ASU 2018-15, Intangible-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That is a Service Contract. This standard clarifies the accounting for implementation costs in cloud computing arrangements. This standard became effective for us on January 1, 2020, and was adopted on a prospective basis. The adoption of this standard did not have a material impact to the Company’s unaudited condensed consolidated financial statements and disclosures.

In November 2018, the FASB issued ASU 2018-18, Collaborative Arrangements (Topic 808): Clarifying the Interaction between Topic 808 and Topic 606. This standard makes targeted improvements for collaborative arrangements as follows:

•Clarifies that certain transactions between collaborative arrangement participants should be accounted for as revenue under ASC 606, Revenue from Contracts with Customers, when the collaborative arrangement participant is a customer in the context of a unit of account. In those situations, all the guidance in ASC 606 should be applied, including recognition, measurement, presentation and disclosure requirements;

•Adds unit-of-account guidance to ASC 808, Collaborative Arrangements, to align with the guidance in ASC 606 (that is, a distinct good or service) when an entity is assessing whether the collaborative arrangement or a part of the arrangement is within the scope of ASC 606; and

•Precludes a company from presenting transactions with collaborative arrangement participants that are not directly related to sales to third parties with revenue recognized under ASC 606 if the collaborative arrangement participant is not a customer.

This standard became effective for the Company on January 1, 2020, and did not have a material impact on the Company’s unaudited condensed consolidated financial statements and related disclosures.

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New Accounting Pronouncements – Not Yet Adopted

In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. This ASU is effective for fiscal years beginning after December 15, 2020, including interim periods therein, and is applicable to the Company in fiscal year 2021. Early adoption is permitted. ASU 2019-12 requires certain amendments to be applied using a modified retrospective approach, which requires a cumulative-effect adjustment to retained earnings as of the beginning of the fiscal year of adoption, while other amendments should be applied on a prospective basis. The Company does not expect that the adoption of this standard will have a material impact on the Company’s unaudited condensed consolidated financial statements and related disclosures.

Derivative Financial Instruments

The Company accounts for warrants and other derivative financial instruments as either equity or liabilities in accordance with ASC Topic 815, Derivatives and Hedging, or ASC 815, based upon the characteristics and provisions of each instrument. Warrants classified as equity are recorded at fair value as of the date of issuance on the Company’s unaudited condensed consolidated balance sheets and no further adjustments to their valuation are made. Warrants classified as derivative liabilities and other derivative financial instruments that require separate accounting as liabilities are recorded on the Company’s unaudited condensed consolidated balance sheets at their fair value on the date of issuance and will be revalued on each subsequent balance sheet date until such instruments are exercised or expire, with any changes in the fair value between reporting periods recorded as other income or expense. The warrant issued by the Company in connection with the Janssen Pharmaceutica NV Research and License Agreement, the Janssen Agreement, is classified as equity in the Company’s unaudited condensed consolidated balance sheet. (See Note 12). The derivative liability recorded in connection with the Company’s Loan Agreement with Pharmakon is classified as a liability in the Company’s unaudited condensed consolidated balance sheet. (See Note 11).

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results may differ from those estimates. Management considers many factors in selecting appropriate financial accounting policies and controls, and in developing the estimates and assumptions that are used in the preparation of these financial statements. Management must apply significant judgment in this process. In addition, other factors may affect estimates, including expected business and operational changes, sensitivity and volatility associated with the assumptions used in developing estimates, and whether historical trends are expected to be representative of future trends. The estimation process often may yield a range of potentially reasonable estimates of the ultimate future outcomes, and management must select an amount that falls within that range of reasonable estimates. Estimates are used in the following areas, among others: prepaid and accrued research and development expense, operating lease assets and liabilities, derivative liabilities, other non-current liabilities, stock-based compensation expense, product and collaboration revenues including various rebates and reserves related to product sales, inventories, income taxes, intangible assets and goodwill. The Company has made estimates of the impact of COVID-19 within the unaudited condensed consolidated financial statements and there may be changes to those estimates in future periods including changes to sales, payer mix, reserves and allowances, intangible assets and goodwill. While the COVID-19 pandemic has not had a material adverse impact on the Company’s financial condition, the future impacts of the pandemic and any resulting economic impact is largely unknown and rapidly evolving.

Credit Losses

Available for sale debt securities. Management determines the appropriate classification of securities at the time of purchase and reevaluates such designation as of each balance sheet date. The Company classifies all securities as available for sale and includes them in current assets as they are intended to fund current operations. The Company's investment portfolio at any point in time contains investments in money market mutual funds, U.S. government debt securities, certificates of deposit and corporate debt securities. The Company segments its portfolio based on the underlying risk profiles of the securities and have a zero loss expectation for money market mutual funds, U.S. government debt securities and certificates of deposit. The Company regularly reviews the securities in an unrealized loss position and evaluates the current expected credit loss by considering factors such as historical experience, market data, issuer-specific factors, and current economic conditions. Factors considered also include whether a decline in fair value below the amortized cost basis is due to credit-related factors or noncredit-related factors, the financial condition and near-term prospects of the issuer, and our intent and ability to hold the investment to allow for an anticipated recovery in fair value. Any unrealized loss that is not credit related is recognized in other comprehensive (loss) income in the unaudited condensed consolidated statements of operations. A credit-related unrealized loss is recognized as an allowance on the unaudited condensed consolidated balance sheets with a corresponding adjustment to earnings in the unaudited condensed consolidated statements of operations.

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Cash, Cash Equivalents, and Restricted Cash

Cash and cash equivalents consist of all cash on hand, deposits and funds invested in available for sale securities with original maturities of three months or less at the time of purchase. Cash equivalents are reported at fair value. At June 30, 2020, the Company’s cash is primarily in money market funds. The Company may maintain balances with its banks in excess of federally insured limits.

Restricted cash represents amounts required for security deposits under the Company’s office and lab space lease agreements and, at June 30, 2019, cash balances held as collateral for the Company’s employee credit card program. Restricted cash is included in “prepaid expenses and other current assets” and “other assets” in the unaudited condensed consolidated balance sheets.

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported in the unaudited condensed consolidated balance sheet that sum to the total of the amounts reported in the unaudited condensed consolidated statement of cash flows (in thousands):

	June 30, 2020		June 30, 2019
Cash and cash equivalents	$	245,406	$	87,212
Prepaid expenses and other current assets	395		363
Other assets	2,039		2,092
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows	$	247,840	$	89,667

Property and Equipment

Property and equipment is stated at cost, less accumulated depreciation. Assets under capital lease are included in property and equipment. Property and equipment is depreciated using the straight-line method over the estimated useful lives of the assets, generally three years to seven years. Such costs are periodically reviewed for recoverability when impairment indicators are present. Such indicators include, among other factors, operating losses, unused capacity, market value declines and technological obsolescence. Recorded values of asset groups of equipment that are not expected to be recovered through undiscounted future net cash flows are written down to current fair value, which generally is determined from estimated discounted future net cash flows (assets held for use) or net realizable value (assets held for sale).

The following is the summary of property and equipment and related accumulated depreciation as of June 30, 2020 and December 31, 2019.

	Useful Life			June 30, 2020		December 31, 2019
				(in thousands)
Computer equipment and software		3		$	1,010	$	1,010
Furniture and fixtures	5	-	7	2,131		2,086
Equipment		7		2,451		2,451
Leasehold improvements	Shorter of the useful life or remaining lease term (10 years)			8,497		8,497
				14,089		14,044
Less accumulated depreciation				(4,709)		(3,664)
Net property and equipment				$	9,380	$	10,380

Depreciation expense was approximately $0.5 million and $0.6 million for the three months ended June 30, 2020 and 2019, respectively, and approximately $1.0 million for each of the six months ended June 30, 2020 and 2019.

Inventory

The Company values its inventories at the lower-of-cost or net realizable value. The Company determines the cost of its inventories, which includes amounts related to materials and manufacturing overhead, on a first-in, first-out basis. The

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Company classifies its inventory costs as long-term, in other assets in its unaudited condensed consolidated balance sheets, when it expects to utilize the inventory beyond their normal operating cycle.

Prior to the regulatory approval of its product candidates, the Company incurs expenses for the manufacture of material that could potentially be available to support the commercial launch of its products. Until the first reporting period when regulatory approval has been received or is otherwise considered probable and the future economic benefit is expected to be realized, the Company records all such costs as research and development expense. Inventory used in clinical trials is also expensed as research and development expense, when selected for such use. Inventory that can be used in either the production of clinical or commercial products is expensed as research and development costs when identified for use in a clinical manufacturing campaign.

The Company performs an assessment of the recoverability of capitalized inventory during each reporting period, and writes down any excess and obsolete inventory to its net realizable value in the period in which the impairment is first identified. Such impairment charges, should they occur, are recorded as a component of cost of product sales in the unaudited condensed consolidated statements of operations and comprehensive loss. The determination of whether inventory costs will be realizable requires the use of estimates by management. If actual market conditions are less favorable than projected by management, additional write-downs of inventory may be required. Additionally, the Company’s product is subject to strict quality control and monitoring that it performs throughout the manufacturing process. The Company will record a charge, in the event that certain batches or units of product do not meet quality specifications, to cost of product sales to write-down any unmarketable inventory to its estimated net realizable value. In all cases, product inventory is carried at the lower of cost or its estimated net realizable value.

Debt

The Company performs an assessment of all embedded features of a debt instrument to determine if (1) such features should be bifurcated and separately accounted for, and (2) if bifurcation requirements are met, whether such features should be classified and accounted for as equity or liability instruments. If the embedded feature meets the requirements to be bifurcated and accounted for as a liability, the fair value of the embedded feature is measured initially, included as a liability on the unaudited condensed consolidated balance sheet, and re-measured to fair value at each reporting period. Any changes in fair value are recorded in the unaudited condensed consolidated statement of operations. The Company monitors, on an ongoing basis, whether events or circumstances could give rise to a change in the classification of embedded features.

Revenue Recognition

The Company generates revenues primarily from sales of Auryxia, see Note 3, and from its collaborations with MTPC and Otsuka, see Note 4. The Company recognizes revenue in accordance with ASC 606, which applies to all contracts with customers, except for contracts that are within the scope of other standards. Under ASC 606, the Company recognizes revenue when its customer obtains control of promised goods or services, in an amount that reflects the consideration which the entity expects to receive in exchange for those goods or services. To determine revenue recognition for arrangements that the Company determines are within the scope of ASC 606, it performs the following five steps:

(i)identify the contract(s) with a customer;

(ii)identify the performance obligations in the contract;

(iii)determine the transaction price;

(iv)allocate the transaction price to the performance obligations in the contract; and

(v)recognize revenue when (or as) the entity satisfies a performance obligation.  

The Company only applies the five-step model to contracts when it is probable that the entity will collect the consideration it is entitled to in exchange for the goods or services it transfers to the customer. At contract inception, once the contract is determined to be within the scope of ASC 606, the Company assesses the goods or services promised within each contract and determines those that are performance obligations, and assesses whether each promised good or service is distinct. The Company then recognizes as revenue the amount of the transaction price that is allocated to the respective performance obligation when (or as) the performance obligation is satisfied. 

The Company does not include a financing component to its estimated transaction price at contract inception unless it estimates that certain performance obligations will not be satisfied within one year. Additionally, the Company recognizes the incremental costs of obtaining a contract as an expense when incurred if the amortization period of the asset that the Company otherwise would have recognized is one year or less.

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Product Revenue, Net

The Company sells Auryxia in the United States, or U.S., primarily to wholesale distributors as well as certain specialty pharmacy providers, collectively, Customers. These Customers resell the Company’s product to health care providers and patients. In addition to distribution agreements with Customers, the Company enters into arrangements with health care providers and payors that provide for government-mandated and/or privately-negotiated rebates, chargebacks, and discounts with respect to the purchase of the Company’s product.

The Company recognizes revenue on product sales when the Customer obtains control of the Company’s product, which occurs at a point in time, typically upon delivery to the Customer. The Company expenses incremental costs of obtaining a contract as and when incurred if the expected amortization period of the asset that it would have recognized is one year or less.

Reserves for Variable Consideration

Revenue from product sales is recorded at the net sales price (transaction price), which includes estimates of variable consideration for which reserves are established and which result from discounts, returns, chargebacks, rebates, co-pay assistance and other allowances that are offered within contracts between the Company and its Customers, health care providers, payors and other indirect customers relating to the Company’s sales of its products. These reserves are based on the amounts earned or to be claimed on the related sales and are classified as reductions of accounts receivable (if the amount will be credited to the Customer) or as a current liability (if the amount is payable to a Customer or a party other than a Customer). When appropriate, these estimates take into consideration a range of possible outcomes which are probability-weighted in accordance with the expected value method in ASC 606 for relevant factors such as the Company’s historical experience, current contractual and statutory requirements, specific known market events and trends, industry data, and forecasted customer buying and payment patterns. Overall, these reserves reflect the Company’s best estimates of the amount of consideration to which it is entitled based on the terms of the respective underlying contracts.

The amount of variable consideration that is included in the transaction price may be constrained, and is included in the net sales price only to the extent that it is probable that a significant reversal in the amount of the cumulative revenue recognized will not occur in a future period.  Actual amounts of consideration ultimately received may differ from the Company’s estimates.  If actual results in the future vary from the Company’s estimates, the Company will adjust these estimates, which would affect net product revenue and earnings in the period such variances become known.

Trade Discounts and Allowances: The Company generally provides Customers with discounts that include incentive fees that are explicitly stated in the Company’s contracts and are recorded as a reduction of revenue in the period the related product revenue is recognized. In addition, the Company compensates (through trade discounts and allowances) its Customers for sales order management, data, and distribution services. However, the Company has determined such services received to date are not distinct from the Company’s sale of products to the Customer and, therefore, these payments have been recorded as a reduction of revenue within the unaudited condensed consolidated statement of operations and comprehensive loss through June 30, 2020. The Company records a corresponding reduction of accounts receivable (if the trade discount and/or allowance will be credited to the Customer) or an increase in accrued expense (if the trade discount and/or allowance is payable to a Customer) on the unaudited condensed consolidated balance sheets.

Product Returns: Consistent with industry practice, the Company generally offers Customers a limited right of return which allows for the product to be returned when the product expiry is within an allowable window, when the quantity delivered is different than quantity ordered, the product is damaged in transit prior to receipt by the customer, or is subject to a recall. This right of return generally lapses once the product is provided to a patient. The Company estimates the amount of its product sales that may be returned for credit by its Customers and records this estimate as a reduction of revenue in the period the related product revenue is recognized. The Company currently estimates product return reserve using available industry data and its own historical sales information, including its visibility into the inventory remaining in the distribution channel.

Provider Chargebacks and Discounts: Chargebacks for fees and discounts to providers represent the estimated obligations resulting from contractual commitments to sell products to qualified healthcare providers at prices lower than the list prices charged to Customers who directly purchase the product from the Company. Customers charge the Company for the difference between what they pay for the product and the ultimate selling price to the qualified healthcare providers. These reserves are established in the same period that the related revenue is recognized, resulting in a reduction of product revenue and accounts receivable. Chargeback amounts are generally determined at the time of resale to the qualified healthcare provider by Customers, and the Company generally issues credits for such amounts within a few weeks of the Customer’s resale of the product. Reserves for chargebacks consist of credits that the Company expects to issue for units that remain in the distribution

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channel at each reporting period end that the Company expects will be sold to qualified healthcare providers, and chargebacks that Customers have claimed but for which the Company has not yet issued a credit.

Commercial and Medicare Part D Rebates: The Company contracts with various commercial payor organizations, primarily health insurance companies and pharmacy benefit managers, for the payment of rebates with respect to utilization of its products. The Company estimates the rebates for commercial and Medicare Part D payors based upon (i) its contracts with the payors and (ii) information obtained from its Customers and other third parties regarding the payor mix for Auryxia. The Company estimates these rebates and records such estimates in the same period the related revenue is recognized, resulting in a reduction of product revenue and the establishment of a current liability.

Other Government Rebates: The Company is subject to discount obligations under state Medicaid programs and other government programs. The Company estimates its Medicaid and other government programs rebates based upon a range of possible outcomes that are probability-weighted for the estimated payor mix. These reserves are recorded in the same period the related revenue is recognized, resulting in a reduction of product revenue and the establishment of a current liability which is included in accrued expenses and other current liabilities on the unaudited condensed consolidated balance sheets. For Medicare, the Company also estimates the number of patients in the prescription drug coverage gap for whom the Company will owe an additional liability under the Medicare Part D program. The Company’s liability for these rebates consists of invoices received for claims from prior quarters that have not been paid or for which an invoice has not yet been received, estimates of claims for the current quarter, and estimated future claims that will be made for product that has been recognized as revenue, but which remains in the distribution channel at the end of each reporting period.

Other Incentives:  Other incentives that the Company offers include voluntary patient assistance programs such as the Company’s co-pay assistance program, which are intended to provide financial assistance to qualified commercially insured patients with prescription drug co-payments required by payors. The calculation of the accrual for co-pay assistance is based on actual claims processed during a given period, as well as historical utilization data to estimate the amount the Company expects to receive associated with product that has been recognized as revenue, but remains in in the distribution channel at the end of each reporting period.

Collaboration Revenues

The Company enters into out-license and collaboration agreements which are within the scope of ASC 606, under which it licenses certain rights to its product candidates to third parties. The terms of these arrangements typically include payment to the Company of one or more of the following: non-refundable, up-front license fees; development, regulatory, and commercial milestone payments; payments for manufacturing supply services the Company provides through its contract manufacturers; and royalties on net sales of licensed products. Each of these payments may result in license, collaboration and other revenue, except for revenues from royalties on net sales of licensed products, which are classified as royalty revenues.

In determining the appropriate amount of revenue to be recognized as the Company fulfills its obligations under each of its agreements, the Company implements the five-step model noted above. As part of the accounting for these arrangements, the Company must develop assumptions that require judgment to determine whether the individual promises should be accounted for as separate performance obligations or as a combined performance obligation, and to determine the stand-alone selling price for each performance obligation identified in the contract. A deliverable represents a separate performance obligation if both of the following criteria are met: (i) the customer can benefit from the good or service either on its own or together with other resources that are readily available to the customer, and (ii) the entity’s promise to transfer the good or service to the customer is separately identifiable from other promises in the contract. The Company uses key assumptions to determine the stand-alone selling price, which may include forecasted revenues, development timelines, reimbursement rates for personnel costs, discount rates, and probabilities of technical and regulatory success. With regard to the MTPC and Otsuka collaboration agreements, the Company recognizes revenue related to amounts allocated to the identified performance obligation on a proportional performance basis as the underlying services are performed.

Licenses of Intellectual Property

If the license to the Company’s intellectual property is determined to be distinct from the other performance obligations identified in an out-license and collaboration arrangement, the Company recognizes revenue from non-refundable, up-front fees allocated to the license when the license is transferred to the customer and the customer is able to use and benefit from the license. For licenses that are bundled with other promises, the Company utilizes judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress for purposes of recognizing revenue from non-refundable, up-front fees. The Company evaluates the measure of progress each reporting period and, if necessary, adjust the measure of performance and related revenue recognition.

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Milestone Payments

At the inception of each arrangement that includes development milestone payments, the Company evaluates whether the milestones are considered probable of being reached and estimates the amount to be included in the transaction price using the most likely amount method. The Company evaluates factors such as the scientific, clinical, regulatory, commercial, and other risks that must be overcome to assess the milestone as probable of being achieved. There is considerable judgment involved in determining whether a milestone is probable of being reached at each specific reporting period. Milestone payments that are not within the control of the Company or the customer, such as regulatory approvals, are not considered probable of being achieved until those approvals are received. If it is probable that a significant revenue reversal would not occur, the associated milestone value is included in the transaction price. The transaction price is then allocated to each performance obligation on a relative stand-alone selling price basis, for which the Company recognizes revenues as, or when, the performance obligations under the contract are satisfied. At the end of each subsequent reporting period, the Company re-evaluates the probability of achievement of such development milestones and any related constraint, and if necessary, adjusts its estimate of the overall transaction price. Any such adjustments are recorded on a cumulative catch-up basis, which would affect collaboration revenue in the period of adjustment.  

Manufacturing Supply Services

Arrangements that include a promise for future supply of drug substance or drug product for either clinical development or commercial supply at the licensee’s discretion are generally considered as options. The Company assesses if these options provide a material right to the licensee and if so, they are accounted for as separate performance obligations. If the Company is entitled to additional payments when the licensee exercises these options, any additional payments are recorded in license, collaboration and other revenues when the licensee obtains control of the goods, which is upon delivery.

Royalties

The Company will recognize sales-based royalties, including milestone payments based on the level of sales, at the later of (i) when the related sales occur, or (ii) when the performance obligation to which some or all of the royalty has been allocated has been satisfied (or partially satisfied). The Company receives royalty payments from JT and Torii, based on net sales of Riona in Japan.

Collaborative Arrangements

The Company records the elements of its collaboration agreements that represent joint operating activities in accordance with ASC Topic 808, Collaborative Arrangements (ASC 808). Accordingly, the elements of the collaboration agreements that represent activities in which both parties are active participants and to which both parties are exposed to the significant risks and rewards that are dependent on the commercial success of the activities are recorded as collaborative arrangements. The Company considers the guidance in ASC 606-10-15, Revenue from Contracts with Customers – Scope and Scope Exceptions, in determining the appropriate treatment for the transactions between the Company and its collaborative partner and the transactions between the Company and third parties. Generally, the classification of transactions under the collaborative arrangements is determined based on the nature and contractual terms of the arrangement along with the nature of the operations of the participants. Therefore, the Company recognizes its allocation of the shared costs incurred with respect to the jointly conducted medical affairs and commercialization and non-promotional activities under the Otsuka U.S. Agreement, as defined below in Note 4, as a component of the related expense in the period incurred. During the three months ended June 30, 2020 and 2019, the Company incurred approximately $0.2 million and $0.3 million, respectively, of costs related to the cost-sharing provisions of the Otsuka U.S. Agreement, of which approximately $0.1 million are reimbursable by Otsuka and recorded as a reduction to research and development expense during each of the three months ended June 30, 2020 and 2019. During the three months ended June 30, 2020 and 2019, Otsuka incurred approximately $0.4 million and $0.1 million, respectively, of costs related to the cost-sharing provisions of the Otsuka U.S. Agreement, of which approximately $0.2 million and $0.1 million are reimbursable by the Company and recorded as an increase to research and development expense during the three months ended June 30, 2020 and 2019, respectively. To the extent product revenue is generated from the collaboration, the Company recognizes its share of the net sales on a gross basis if it is deemed to be the principal in the transactions with customers, or on a net basis if it is instead deemed to be the agent in the transactions with customers, consistent with the guidance in ASC 606.

Intangible Assets

The Company maintains a definite-lived intangible asset related to developed product rights for Auryxia, which was acquired on December 12, 2018 as part of the Merger.

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Intangible assets are initially recorded at fair value and stated net of accumulated amortization and impairments. The Company amortizes its intangible assets that have finite lives using either the straight-line method, or if reliably determinable, based on the pattern in which the economic benefit of the asset is expected to be utilized. Amortization for the Company’s intangible asset is recorded over its estimated useful life, which as of June 30, 2020 is estimated to be seven years.

The Company reviews intangible assets subject to amortization to determine if any adverse conditions exist or a change in circumstances has occurred that would indicate impairment or a change in the remaining useful life. If an impairment indicator exists, the Company performs a recoverability test by comparing the sum of the estimated undiscounted cash flows of the intangible asset group to its carrying value on the unaudited condensed consolidated balance sheet. If the carrying value of the intangible asset group exceeds the undiscounted cash flows used in the recoverability test, the Company will write the carrying value of the intangible asset group down to the fair value in the period identified. The Company calculates the fair value of the intangible asset group as the present value of estimated future cash flows expected to be generated from the intangible asset group using a risk-adjusted discount rate. In determining estimated future cash flows associated with its intangible asset group, the Company uses market participant assumptions pursuant to ASC Topic 820, Fair Value Measurements and Disclosures (ASC 820). During the second quarter of 2020, the Company identified indicators of impairment related to the developed product rights for Auryxia and recorded an impairment charge of $115.5 million (see Note 9 for additional information).

Goodwill

The Company allocates any excess purchase price over the fair value of the net tangible and intangible assets acquired in a business combination to goodwill. Goodwill is evaluated for impairment on an annual basis as of October 1, and more frequently if indicators are present or changes in circumstances suggest that impairment may exist.

The Company compares the fair value of its reporting unit to its carrying value. If the carrying value of the net assets assigned to the reporting unit exceeds the fair value of its reporting unit, the Company would record an impairment loss equal to the difference. As described above, the Company operates in one operating segment which the Company considers to be the only reporting unit.

Fair Value of Financial Instruments

The Company is required to disclose information on all assets and liabilities reported at fair value that enables an assessment of the inputs used in determining the reported fair values. ASC 820 establishes a hierarchy of inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the observable inputs be used when available.

Observable inputs are inputs that market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions about the inputs that market participants would use in pricing the asset or liability, and are developed based on the best information available in the circumstances. The fair value hierarchy applies only to the valuation inputs used in determining the reported fair value of the investments, and is not a measure of the investment credit quality. The three levels of the fair value hierarchy are described below:

•Level 1 – Valuations based on unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date.

•Level 2 – Valuations based on quoted prices for similar assets or liabilities in markets that are not active, or for which all significant inputs are observable, either directly or indirectly.

•Level 3 – Valuations that require inputs that reflect the Company’s own assumptions that are both significant to the fair value measurement and unobservable.

To the extent that valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires more judgment. Accordingly, the degree of judgment exercised by the Company in determining fair value is greatest for instruments categorized in Level 3. A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement.

Items measured at fair value on a recurring basis include available for sale securities and derivative liabilities (see Note 7). The carrying amounts of prepaid expenses and other current assets, accounts payable and accrued expenses approximate their fair values due to their short-term maturities.

Items measured at fair value on a nonrecurring basis include property and equipment, intangible assets and goodwill. The Company remeasures the fair value of these assets upon the occurrence of certain events. There were no such remeasurements

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to property and equipment during either of the three and six months ended June 30, 2020 and 2019. During the three months ended June 30, 2020, the Company identified indicators of impairment related to the developed product rights for Auryxia, an intangible asset measured using Level 3 inputs, and recorded an impairment charge of $115.5 million (see Note 9 for additional information). There were no other impairments to assets measured using Level 3 inputs during either of the three and six months ended June 30, 2020 and no impairments to assets measured using Level 3 inputs during either of the three and six months ended June 30, 2019.

The Company’s other financial instruments mainly consists of debt (see Note 11).

Net Loss per Share

Basic net loss per share is calculated by dividing net loss by the weighted-average shares outstanding during the period, without consideration for common stock equivalents. Diluted net loss per share is calculated by adjusting weighted-average shares outstanding for the dilutive effect of common stock equivalents outstanding for the period, determined using the treasury-stock method. For purposes of the diluted net loss per share calculation, preferred stock, stock options, warrants, restricted stock and RSUs are considered to be common stock equivalents, but have been excluded from the calculation of diluted net loss per share, as their effect would be anti-dilutive for all periods presented. Therefore, basic and diluted net loss per share were the same for all periods presented. Diluted net income per share is calculated by dividing the net income by the weighted-average common shares outstanding for the period, including any dilutive effect from outstanding options, warrants, restricted stock and RSUs using the treasury stock method.

3.Product Revenue and Reserves for Variable Consideration

To date, the Company’s only source of product revenue has been product revenue from the U.S. sales of Auryxia, which it began recording on December 12, 2018 following the consummation of the Merger. Total net product revenue was $30.7 million and $29.1 million for the three months ended June 30, 2020 and 2019, respectively, and $59.9 million and $52.2 million for the six months ended June 30, 2020 and 2019, respectively. The following table summarizes activity in each of the product revenue allowance and reserve categories for the six months ended June 30, 2020 and 2019 (in thousands):

	Chargebacks and Discounts		Rebates, Fees and other Deductions		Returns		Total
Balance at December 31, 2019	$	738	$	30,552	$	253	$	31,543
Current provisions related to sales in current year	5,055		66,348		2,684		74,087
Adjustments related to prior year sales	(31)		638		44		651
Credits/payments made	(4,995)		(54,945)		(2,237)		(62,177)
Balance at June 30, 2020	$	767	$	42,593	$	744	$	44,104
Balance at December 31, 2018	$	516	$	22,861	$	360	$	23,737
Current provisions related to sales in current year	3,306		44,708		1,596		49,610
Adjustments related to prior year sales	(22)		479		—		457
Credits/payments made	(3,320)		(46,131)		(1,663)		(51,114)
Balance at June 30, 2019	$	480	$	21,917	$	293	$	22,690

Chargebacks, discounts and returns are recorded as a direct reduction of revenue on the unaudited condensed consolidated statement of operations with a corresponding reduction to accounts receivable on the unaudited condensed consolidated balance sheets. Rebates, distribution-related fees, and other sales-related deductions are recorded as a reduction in revenue on the unaudited condensed consolidated statement of operations with a corresponding increase to accrued liabilities or accounts payable on the unaudited condensed consolidated balance sheets.

Accounts receivable, net related to product sales was approximately $20.3 million and $23.0 million as of June 30, 2020 and December 31, 2019, respectively.

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4.License, Collaboration and Other Significant Agreements

During the three and six months ended June 30, 2020 and 2019, the Company recognized the following revenues from its license, collaboration and other significant agreements and had the following deferred revenue balances as of June 30, 2020:

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
License, Collaboration and Other Revenue:	(in thousands)				(in thousands)
MTPC Agreement	$	15,000	$	10,000	$	15,000	$	10,000
Otsuka U.S. Agreement	25,888		37,519		$	64,465	$	63,742
Otsuka International Agreement	12,832		22,467		32,202		44,423
Total Proportional Performance Revenue	$	53,720	$	69,986	$	111,667	$	118,165
JT and Torii	1,740		1,491		2,866		2,719
MTPC Other Revenue	3,986		237		4,182		385
Total License, Collaboration and Other Revenue	$	59,446	$	71,714	$	118,715	$	121,269

	June 30, 2020
	Short-Term		Long-Term		Total
Deferred Revenue:	(in thousands)
Otsuka U.S. Agreement	$	15,378	$	20,557	$	35,935
Otsuka International Agreement	8,151		9,306		17,457
Vifor Agreement	—		4,679		4,679
Total	$	23,529	$	34,542	$	58,071

The following table presents changes in the Company’s contract assets and liabilities during the six months ended June 30, 2020 and 2019 (in thousands):

Six Months Ended June 30, 2020	Balance at Beginning of Period		Additions		Deductions		Balance at End of Period
Contract assets:
Accounts receivable(1)	$	15,822	$	118,368	$	(115,382)	$	18,808
Prepaid expenses and other current assets	$	—	$	756	$	—	$	756
Contract liabilities:
Deferred revenue	$	72,950	$	90,471	$	(105,350)	$	58,071
Accounts payable	$	—	$	5,651	$	—	$	5,651
Accrued expenses and other current liabilities	$	—	$	615	$	(615)	$	—
Six Months Ended June 30, 2019
Contract assets:
Other current assets	$	—	$	10,000	$	—	$	10,000
Accounts receivable(1)	$	1,587	$	81,830	$	(75,260)	$	8,157
Contract liabilities:
Deferred revenue	$	112,689	$	91,351	$	(108,166)	$	95,874
Accounts payable	$	13,492	$	—	$	(13,492)	$	—

(1)Excludes accounts receivable from other services related to clinical and regulatory activities performed by the Company on behalf of MTPC that are not included in the performance obligations identified under the MTPC Agreement as of June 30, 2020 and 2019 and December 31, 2019 and 2018. Also excludes accounts receivable related to amounts due to the Company from product sales which are included in the accompanying unaudited condensed consolidated balance sheet as of June 30, 2020 and December 31, 2019.

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During the three and six months ended June 30, 2020 and 2019, the Company recognized the following revenues as a result of changes in the contract asset and contract liability balances in the respective periods (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
Revenue Recognized in the Period from:	2020		2019		2020		2019
Amounts included in deferred revenue at the beginning of the period	$	16,964	$	23,277	$	22,186	$	40,316
Performance obligations satisfied in previous periods	$	3,555	$	—	$	3,263	$	1,254

Mitsubishi Tanabe Pharma Corporation Collaboration Agreement

Summary of Agreement

On December 11, 2015, the Company and Mitsubishi Tanabe Pharma Corporation, or MTPC, entered into a collaboration agreement, or the MTPC Agreement, providing MTPC with exclusive development and commercialization rights to vadadustat in Japan and certain other Asian countries, collectively, the MTPC Territory. In addition, the Company will supply vadadustat for both clinical and commercial use in the MTPC Territory, subject to MTPC’s option to manufacture commercial drug product in the MTPC Territory.

The Company and MTPC agreed that, instead of including Japanese patients in the Company’s global Phase 3 program for vadadustat, MTPC would be the sponsor of a Phase 3 program for vadadustat in Japan. MTPC reported top-line data for the two Phase 3 pivotal trials and data from the two supportive Phase 3 studies in March 2019 and 52-week data for the two Phase 3 pivotal trials in November 2019. MTPC is responsible for the costs of the Phase 3 program in Japan and other studies required in Japan, and made no funding payments for the global Phase 3 program. In July 2019, MTPC submitted a Japanese New Drug Application, or JNDA, to the Ministry of Health, Labor and Welfare in Japan for manufacturing and marketing approval of vadadustat, as a treatment for anemia due to CKD, which triggered a $10.0 million regulatory milestone payment to the Company. In June 2020, vadadustat was approved in Japan for the treatment of anemia due to CKD, which triggered a $15.0 million regulatory milestone payment to the Company which was received in the third quarter of 2020. Vadadustat will be marketed by MTPC in Japan under the trade name VAFSEO.

The Company and MTPC have established a joint steering committee pursuant to the MTPC Agreement to oversee development and commercialization of vadadustat in the MTPC Territory, including approval of any development or commercialization plans. Unless earlier terminated, the MTPC Agreement will continue in effect on a country-by-country basis until the later of the following: expiration of the last-to-expire patent covering vadadustat in such country in the MTPC Territory; expiration of marketing or regulatory exclusivity in such country in the MTPC Territory; or ten years after the first commercial sale of vadadustat in such country in the MTPC Territory. MTPC may terminate the MTPC Agreement upon twelve months’ notice at any time after the second anniversary of the effective date of the MTPC Agreement. Either party may terminate the MTPC Agreement upon the material breach of the other party that is not cured within a specified time period or upon the insolvency of the other party.

MTPC is required to make certain milestone payments to the Company aggregating up to approximately $225.0 million upon the achievement of specified development, regulatory and commercial events. More specifically, the Company received $10.0 million in development milestone payments, and is eligible to receive up to $40.0 million in regulatory milestone payments, of which the Company received $10.0 million in relation to the JNDA filing in the third quarter of 2019 and earned an additional $15.0 million following regulatory approval of vadadustat in Japan in the second quarter of 2020, which the Company received in the third quarter of 2020, and up to $175.0 million in commercial milestone payments associated with aggregate sales of all products. In consideration for the exclusive license and other rights contained in the MTPC Agreement, MTPC also made a $20.0 million upfront payment as well as a payment of $20.5 million for Phase 2 studies in Japanese patients completed by the Company and reimbursed by MTPC. Additionally, if vadadustat is commercialized, the Company would be entitled to receive tiered double-digit royalty payments of up to 20% on sales of vadadustat in the MTPC Territory. Royalty payments are subject to certain reductions, including upon the introduction of competitive products in certain instances. Royalties are due on a country-by-country basis from the date of first commercial sale of a licensed product in a country until the last to occur of: (i) the expiration of the last to expire valid claim within the intellectual property covering the licensed product, (ii) the expiration of marketing or regulatory exclusivity in such country, or (iii) the tenth anniversary of the first commercial sale of such licensed product in such country. Due to the uncertainty of drug development and commercialization and the high historical failure rates associated therewith, although the Company has received $10.0 million in development milestones, a $10.0 million regulatory milestone, and earned a $15.0 million regulatory milestone following regulatory approval of vadadustat in Japan in the second

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quarter of 2020, no additional milestone may ever be received from MTPC. The Company will recognize any revenue from MTPC royalties in the period in which the sales occur.

Revenue Recognition

The Company evaluated the elements of the MTPC Agreement in accordance with the provisions of ASC 606 and concluded that the contract counterparty, MTPC, is a customer. The Company’s arrangement with MTPC contains the following material promises under the contract at inception: (i) license under certain of the Company’s intellectual property to develop and commercialize vadadustat (the License Deliverable) in the MTPC Territory, (ii) clinical supply of vadadustat (the Clinical Supply Deliverable), (iii) knowledge transfer, (iv) Phase 2 dosing study research services (the Research Deliverable), and (v) rights to future know-how.

The Company has identified two performance obligations in connection with its material promises under the MTPC Agreement as follows: (i) License, Research and Clinical Supply Performance Obligation and (ii) Rights to Future Know-How Performance Obligation. Factors considered in making the assessment of which material promises will be accounted for as separate performance obligations included, among other things, the capabilities of the collaboration partner, whether any other vendor sells the item separately, whether the good or service is highly interdependent or highly interrelated to the other elements in the arrangement, and whether there are other vendors that can provide the items. Additionally, the MTPC Agreement does not include a general right of return.

The Company allocates the transaction price to each performance obligation based on the Company’s best estimate of the relative standalone selling price. The Company developed a best estimate of the standalone selling price for the Rights to Future Know-How Performance Obligation primarily based on the likelihood that additional intellectual property covered by the license conveyed will be developed during the term of the arrangement. The Company did not develop a best estimate of standalone selling price for the License, Research and Clinical Supply Performance Obligation because the estimate of standalone selling price associated with the Rights to Future Know-How Performance Obligation was determined to be immaterial. The Company has concluded that a change in the key assumptions used to determine the best estimate of standalone selling price for each performance obligation would not have a significant impact on the allocation of arrangement consideration. The deliverables associated with the License, Research and Clinical Supply Performance Obligation were satisfied as of June 30, 2018.

The transaction price at inception was comprised of: (i) the up-front payment, (ii) the estimated cost for the Phase 2 studies, (iii) a non-substantive milestone associated with the first patient enrolled in the NDD-CKD Phase 3 study, and (iv) the cost of all clinical supply provided to MTPC for the Phase 3 studies. No other development and no regulatory milestones were included in the transaction price at inception, as all other milestone amounts were fully constrained. As part of its evaluation of the constraint, the Company considered numerous factors, including that receipt of the milestones is outside the control of the Company and contingent upon success in future clinical trials and the licensee’s efforts. The total aggregate amount of development milestones is $10.0 million and the total aggregate amount of the regulatory milestones is up to $40.0 million. The total aggregate amount of sales milestones is up to $175.0 million. Any consideration related to sales-based milestones (including royalties) will be recognized when the related sales occur as they were determined to relate predominantly to the license granted to MTPC and therefore have also been excluded from the transaction price.  The Company re-evaluates the transaction price in each reporting period and as uncertain events are resolved or other changes in circumstances occur.

As of June 30, 2020, the transaction price is comprised of: (i) the up-front payment of $20.0 million, (ii) the cost for the Phase 2 studies of $20.5 million, (iii) the cost of all clinical supply provided to MTPC for the Phase 3 studies, (iv) $10.0 million in development milestones received, comprised of a $6.0 million and a $4.0 million development milestone, (v) the $10.0 million regulatory milestone relating to the JNDA filing, and (vi) the $15.0 million regulatory milestone relating to regulatory approval of vadadustat in Japan. As of June 30, 2020, all development milestones, a $10.0 million regulatory milestone related to the filing of the JNDA and a $15.0 million regulatory milestone relating to regulatory approval of vadadustat in Japan have been achieved. No other regulatory milestones have been assessed as probable of being achieved and as a result have been fully constrained. Revenue for the License, Research and Clinical Supply Performance Obligation for the MTPC Agreement is being recognized using a proportional performance method, for which all deliverables have been completed. Accordingly, the Company recognized the $15.0 million regulatory milestone relating to regulatory approval of vadadustat in Japan as revenue during the three and six months ended June 30, 2020, as the regulatory milestone was both deemed probable of being achieved and the required performance obligations had been satisfied as of June 30, 2020. The payment for this $15.0 million regulatory milestone was received in the third quarter of 2020. The Company recognized the $10.0 million regulatory milestone for the filing of the JNDA as revenue during the three and six months ended June 30, 2019, as the regulatory milestone was both deemed probable of being achieved and the required performance obligations had been satisfied as of June 30, 2019. As of

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June 30, 2020, there is no deferred revenue, $15.0 million in accounts receivable, and no contract assets. There were no asset or liability balances classified as long-term in the unaudited condensed consolidated balance sheet as of June 30, 2020.

Supply of Validation Drug Product

In March 2020, in connection with the MTPC Agreement, the Company agreed to supply MTPC with certain vadadustat drug product for commercial use and MTPC agreed to reimburse the Company for certain manufacturing-related expenses. In connection with this arrangement, the Company invoiced the upfront payment of $10.4 million, which it received during the three months ended June 30, 2020. The Company does not recognize revenue under this arrangement until risk of loss passes to MTPC and delivery has occurred. During the three and six months ended June 30, 2020, the Company recognized $4.0 million in revenue for drug product that was delivered during the three months ended June 30, 2020. As of June 30, 2020, the Company recorded no accounts receivable, no deferred revenue, and $6.4 million in other current liabilities for drug product that is subject to return by MTPC.

U.S. Collaboration and License Agreement with Otsuka Pharmaceutical Co. Ltd.

Summary of Agreement

On December 18, 2016, the Company entered into a collaboration and license agreement with Otsuka, or the Otsuka U.S. Agreement. The collaboration is focused on the development and commercialization of vadadustat in the United States. Under the terms of the Otsuka U.S. Agreement, the Company is responsible for leading the development of vadadustat, including the ongoing Phase 3 development program, and the Company controls and retains final decision making authority with respect to certain matters including U.S. pricing strategy and manufacturing. The Company and Otsuka will co-commercialize vadadustat in the United States, subject to the approval of vadadustat by the FDA.

Under the terms of the Otsuka U.S. Agreement, the Company granted to Otsuka a co-exclusive, non-sublicensable license under certain intellectual property controlled by the Company solely to perform medical affairs activities and to conduct non-promotional and commercialization activities related to vadadustat in accordance with the associated plans. The co-exclusive license relates to activities that will be jointly conducted by the Company and Otsuka pursuant to the terms of the Otsuka U.S. Agreement. Additionally, the parties agreed not to promote, market or sell any competing product in the territory covered by the agreement.

The Company is responsible for performing all activities related to the development of vadadustat as outlined in the current global development plan, while Otsuka may agree to perform certain activities under the global development plan from time to time as agreed by the parties. The current global development plan encompasses all activities with respect to the ongoing PRO₂TECT and INNO₂VATE clinical programs through the filing for marketing approval, as well as certain other studies. The Company’s obligations related to the conduct of the current global development plan include the associated manufacturing and supply services for vadadustat.  

Under the Otsuka U.S. Agreement, the parties jointly conduct, and have equal responsibility for, all medical affairs, commercialization and non-promotional activities pursuant to underlying plans as agreed to by the parties. If approved by the FDA, Otsuka will purchase all of its supply requirements of vadadustat for commercial use from the Company pursuant to a separate supply agreement to be negotiated.

The activities under the Otsuka U.S. Agreement are governed by a joint steering committee, or JSC, formed by an equal number of representatives from the Company and Otsuka. The JSC coordinates and monitors the parties’ activities under the collaboration. Among other responsibilities, the JSC manages the overall strategic alignment between the parties, oversees the current global development plan and reviews other detailed plans setting forth the parties’ activities under the arrangement, including the medical affairs plan and commercialization and non-promotional activities plan. Additionally, the parties established a joint development committee, or JDC, which is comprised of an equal number of representatives from the Company and Otsuka. Among other responsibilities, the JDC shares information related to, and reviews and discusses activities and progress under, the current global development plan and any other development that may be conducted pursuant to the collaboration. The Company and Otsuka also established a joint manufacturing committee, or JMC, which is comprised of an equal number of representatives from each of the parties. Among other responsibilities, the JMC oversees the manufacturing plan and related manufacturing activities. In support of the potential commercialization of vadadustat, the parties established a joint commercialization committee, or JCC, which is comprised of an equal number of representatives from the Company and Otsuka. Among other responsibilities, the JCC oversees the activities and progress under the commercialization and non-promotional activities plan and all other sales and marketing activities. The Company has retained final decision-making authority with respect to certain matters, including U.S. pricing strategy and certain other key commercialization matters.

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Under the terms of the Otsuka U.S. Agreement, the Company received a $125.0 million up-front, non-refundable, non-creditable cash payment in December 2016. In March 2017, the Company received a payment of approximately $33.8 million, which represented reimbursement for Otsuka’s share of costs previously incurred by the Company in implementing the current global development plan through December 31, 2016. Commencing in the third quarter of 2017, whereupon the Company had incurred a specified amount of incremental costs, Otsuka began to contribute, as required by the Otsuka U.S. Agreement, a percentage of the remaining costs incurred under the current global development plan. The Company estimates that Otsuka’s funding of the current global development plan costs subsequent to December 31, 2016 will total $290.6 million or more, depending on the actual costs incurred toward the current global development plan. The costs associated with the performance of any development activities in addition to those outlined in the current global development plan will be subject to a cost sharing or reimbursement mechanism as set forth in the Otsuka U.S. Agreement or to be determined by the parties. Costs incurred with respect to medical affairs and commercialization and non-promotional activities will generally be shared equally by the parties. In addition, due to the costs incurred in completing the activities under the current global development plan exceeding a certain threshold in the second quarter of 2019, the Company elected to require Otsuka to increase the aggregate percentage of current global development costs it funds under the Otsuka U.S. Agreement and the Otsuka International Agreement, as defined below, from 52.5% to 80%, or the Otsuka Funding Option. The Company estimates the additional funding as a result of exercising the Otsuka Funding Option, or the Additional Funding, to total approximately $106.4 million or more, depending on the actual costs incurred toward the current global development plan. The Additional Funding is fully creditable against future payments due to the Company under the arrangement, provided that future payments due to the Company may not be reduced by more than 50% in any calendar year and any remaining creditable amount above 50% in any calendar year will be applied to subsequent future payments until fully credited. As of June 30, 2020, the Additional Funding was $71.5 million.

In addition, Otsuka is required to make certain milestone payments to the Company upon the achievement of specified development, regulatory and commercial events. More specifically, as of June 30, 2020, the Company is eligible to receive up to $105.0 million in development milestone payments, up to $65.0 million in regulatory milestone payments for the first product to achieve the associated event, and up to $575.0 million in commercial milestone payments associated with aggregate sales of licensed products. These future milestones are subject to reduction as a result of the Company’s exercise of the Otsuka Funding Option, as described above. Due to the uncertainty of drug development and commercialization and the high historical failure rates associated therewith, no milestone payments may ever be received from Otsuka.

Under the Otsuka U.S. Agreement, the Company and Otsuka share the costs of developing and commercializing vadadustat in the United States and the profits from the sales of vadadustat after approval by the FDA. In connection with the profit share calculation, net sales include gross sales to third-party customers net of discounts, rebates, chargebacks, taxes, freight and insurance charges and other applicable deductions. Shared costs generally include costs attributable or reasonably allocable to the manufacture of vadadustat for commercialization purposes and the performance of medical affairs activities, non-promotional activities and commercialization activities.

Unless earlier terminated, the Otsuka U.S. Agreement will expire in the United States on a product-by-product basis on the date that one or more generic versions of vadadustat first achieves 90% market penetration. Either party may terminate the Otsuka U.S. Agreement in its entirety upon an uncured breach or insolvency on the part of the other party. Otsuka may terminate the Otsuka U.S. Agreement in its entirety upon 12 months’ prior written notice at any time after the release of the first top-line data from the global Phase 3 development program for vadadustat, which occurred in the second quarter of 2020 with the release of the top-line data from the INNO₂VATE program. In the event of termination of the Otsuka U.S. Agreement, all rights and licenses granted to Otsuka under the Otsuka U.S. Agreement will automatically terminate and the licenses granted to the Company will become freely sublicensable. In addition, the upfront payment, all development costs and milestone payments received by the Company prior to such termination will not be refunded to Otsuka.

Revenue Recognition

The Company evaluated the elements of the Otsuka U.S. Agreement in accordance with the provisions of ASC 606 and concluded that the contract counterparty, Otsuka, is a customer. The Company’s arrangement with Otsuka contains the following material promises under the contract at inception: (i) license under certain of the Company’s intellectual property to develop, perform medical affairs activities with respect to and conduct non-promotional and commercialization activities related to vadadustat and products containing or comprising vadadustat (the License Deliverable), (ii) development services to be performed pursuant to the current global development plan (the Development Services Deliverable), (iii) rights to future intellectual property (the Future IP Deliverable), and (iv) joint committee services (the Committee Deliverable).

The Company has identified three performance obligations in connection with its obligations under the Otsuka U.S. Agreement. Factors considered in making the assessment of which material promises will be accounted for as separate performance

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obligations included, among other things, the capabilities of the collaboration partner, whether any other vendor sells the item separately, whether the good or service is highly interdependent or highly interrelated to the other elements in the arrangement, and whether there are other vendors that can provide the items. Additionally, the Otsuka U.S. Agreement does not include a general right of return. The three performance obligations identified in connection with the Company’s obligations under the Otsuka U.S. Agreement are as follows:

(i)License and Development Services Combined (License Performance Obligation)

The License Deliverable is not distinct from the Development Services Deliverable, due to the limitations inherent in the license conveyed. More specifically, the license conveyed to Otsuka does not provide Otsuka with the right to manufacture vadadustat and products containing or comprising vadadustat. However, the manufacturing and supply services that are conducted as part of the services to be performed pursuant to the current global development plan are necessary for Otsuka to fully exploit the associated license for its intended purpose. The value of the rights provided through the license conveyed will be realized when the underlying products covered by the intellectual property progress through the development cycle, receive regulatory approval and are commercialized. Products containing or comprising vadadustat cannot be commercialized until the development services under the current global development plan are completed. Accordingly, Otsuka must obtain the manufacturing and supply of the associated products that are included within the development services to be performed pursuant to the current global development plan from the Company in order to derive benefit from the license, which significantly limits the ability for Otsuka to utilize the License Deliverable for its intended purpose in a way that generates economic benefits.

(ii)Rights to Future Intellectual Property (Future IP Performance Obligation)

The License and Development Services deliverables combined are distinct from the Future IP Deliverable because Otsuka can obtain the value of the license using the clinical trial materials implicit in the development services without the receipt of any other intellectual property that may be discovered or developed in the future. The Future IP Deliverable is distinct from the Committee Deliverable because the joint committee services have no bearing on the value to be derived from the rights to potential future intellectual property. As a result, the Future IP Deliverable qualifies as a separate performance obligation.

(iii)Joint Committee Services (Committee Performance Obligation)

The License and Development Services deliverables combined are distinct from the Committee Deliverable because Otsuka can obtain the value of the license using the clinical trial materials implicit in the development services without the joint committee services. The Committee Deliverable also is distinct from the rights to Future IP Deliverable because the joint committee services have no bearing on the value to be derived from the rights to potential future intellectual property. As a result, the Committee Deliverable qualifies as a separate performance obligation.

The Company allocates the transaction price to each performance obligation based on the Company’s best estimate of the relative standalone selling price. The Company developed a best estimate of standalone selling price for the Committee Performance Obligation after considering the nature of the services to be performed and estimates of the associated effort and rates applicable to such services that would be expected to be realized under similar contracts. The Company developed a best estimate of standalone selling price for the Future IP Performance Obligation primarily based on the likelihood that additional intellectual property covered by the license conveyed will be developed during the term of the arrangement. The Company did not develop a best estimate of standalone selling price for the License Performance Obligation due to the following: (i) the best estimates of standalone selling price associated with the Future IP Performance Obligation was determined to be immaterial and (ii) the period of performance and pattern of recognition for the License Performance Obligation and the Committee Performance Obligation was determined to be similar. The Company has concluded that a change in the key assumptions used to determine the best estimate of standalone selling price for each performance obligation would not have a significant impact on the allocation of arrangement consideration.

The transaction price at inception was comprised of: (i) the up-front payment, (ii) the cost share payment with respect to amounts incurred by the Company through December 31, 2016, and (iii) an estimate of the cost share payments to be received with respect to amounts incurred by the Company subsequent to December 31, 2016. No development or regulatory milestones were included in the transaction price at inception, as all milestone amounts were fully constrained. As part of its evaluation of the constraint, the Company considered numerous factors, including that receipt of the milestones is outside the control of the Company and contingent upon success in future clinical trials and the licensee’s efforts. Any consideration related to sales-based milestones will be recognized when the related sales occur as they were determined to relate predominantly to the license granted to Otsuka and therefore have also been excluded from the transaction price. 

The Company re-evaluates the transaction price in each reporting period and as uncertain events are resolved or other changes in circumstances occur. The Company determined that under ASC 606, the contract was modified in the second quarter of 2019 when the Otsuka Funding Option became effective and the Company became eligible to receive the Additional Funding

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amount. In connection with the modification, the Company adjusted the transaction price to include the Additional Funding amount as additional variable consideration. The Company constrains the variable consideration to an amount for which a significant revenue reversal is not probable. In the event that there is consideration received by a customer in the form of activities performed by such customer under the global development plan, such consideration is reflected as a reduction to the transaction price as contra revenue rather than as an expense because the associated services are not distinct from the License Performance Obligation.

No amounts were allocated to the Future IP Performance Obligation because the associated best estimate of standalone selling price was determined to be immaterial. Due to the similar performance period and recognition pattern between the License Performance Obligation and the Committee Performance Obligation, the transaction price has been allocated to the License Performance Obligation and the Committee Performance Obligation on a combined basis. Accordingly, the Company will recognize revenue related to the allocable arrangement consideration on a proportional performance basis as the underlying development services are performed pursuant to the current global development plan which is commensurate with the period and consistent with the pattern over which the Company’s obligations are satisfied for both the License Performance Obligation and the Committee Performance Obligation. Effectively, the Company has treated the arrangement as if the License Performance Obligation and the Committee Performance Obligation are a single performance obligation.

As of June 30, 2020, the transaction price totaling $449.4 million is comprised of: (i) the up-front payment of $125.0 million, (ii) the cost share payment with respect to amounts incurred by the Company through December 31, 2016 of $33.8 million, and (iii) the estimate of the net cost share consideration to be received of approximately $290.6 million with respect to amounts incurred by the Company subsequent to December 31, 2016 and the Additional Funding. As of June 30, 2020, no development or regulatory milestones have been assessed as probable of being reached and thus have been fully constrained.

During the three months ended June 30, 2020 and 2019, the Company recognized revenue totaling approximately $25.9 million and $37.5 million, respectively, and approximately $64.5 million and $63.7 million during the six months ended June 30, 2020 and 2019, respectively, with respect to the Otsuka U.S. Agreement. The revenue is classified as collaboration revenue in the accompanying unaudited condensed consolidated statements of operations. As of June 30, 2020, there is approximately $35.9 million of deferred revenue related to the Otsuka U.S. Agreement of which $15.4 million is classified as current and $20.6 million is classified as long-term in the accompanying unaudited condensed consolidated balance sheet based on the performance period of the underlying obligations. Additionally, as of June 30, 2020, there are approximately $3.9 million in contract liabilities (included in accounts payable) and $0.5 million in prepaid expenses and other current assets in the accompanying unaudited condensed consolidated balance sheet. As of December 31, 2019, there was $8.9 million in accounts receivable in the consolidated balance sheet.

The Company determined that the medical affairs, commercialization and non-promotional activities elements of the Otsuka U.S. Agreement represent joint operating activities in which both parties are active participants and of which both parties are exposed to significant risks and rewards that are dependent on the success of the activities. Accordingly, the Company is accounting for the joint medical affairs, commercialization and non-promotional activities in accordance with ASC No. 808, Collaborative Arrangements (ASC 808). Additionally, the Company has determined that in the context of the medical affairs, commercialization and non-promotional activities, Otsuka does not represent a customer as contemplated by ASC 606-10-15, Revenue from Contracts with Customers – Scope and Scope Exceptions. As a result, the activities conducted pursuant to the medical affairs, commercialization and non-promotional activities plans will be accounted for as a component of the related expense in the period incurred. During the three months ended June 30, 2020 and 2019, the Company incurred approximately $0.2 million and $0.3 million, respectively, of costs related to the cost-sharing provisions of the Otsuka U.S. Agreement of which approximately $0.1 million are reimbursable by Otsuka and recorded as a reduction to research and development expense during each of the three months ended June 30, 2020 and 2019. During the three months ended June 30, 2020 and 2019, Otsuka incurred approximately $0.4 million and $0.1 million of costs related to the cost-sharing provisions of the Otsuka U.S. Agreement, of which approximately $0.2 million and $0.1 million are reimbursable by the Company and recorded as an increase to research and development expense during the three months ended June 30, 2020 and 2019, respectively.

International Collaboration and License Agreement with Otsuka Pharmaceutical Co. Ltd.

Summary of Agreement

On April 25, 2017, the Company entered into a collaboration and license agreement with Otsuka, or the Otsuka International Agreement. The collaboration is focused on the development and commercialization of vadadustat in Europe, Russia, China, Canada, Australia, the Middle East and certain other territories, collectively, the Otsuka International Territory. Under the terms of the Otsuka International Agreement, the Company is responsible for leading the development of vadadustat, including the

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ongoing global Phase 3 development program. Otsuka has the sole responsibility, at its own cost, for the commercialization of vadadustat in the Otsuka International Territory, subject to the approval by the relevant regulatory authorities.

Under the terms of the Otsuka International Agreement, the Company granted to Otsuka an exclusive, sublicensable license under certain intellectual property controlled by the Company to develop and commercialize vadadustat and products containing or comprising vadadustat in the Otsuka International Territory.

Pursuant to the terms of the Otsuka International Agreement, the Company is responsible for performing all activities related to the development of vadadustat as outlined in the current global development plan, while Otsuka may agree to perform certain activities under the global development plan from time to time as agreed by the parties. Under the Otsuka International Agreement, the Company controls and retains final decision-making authority with respect to certain matters. Per the terms of the Otsuka International Agreement, Otsuka is generally responsible for the conduct of any development activities that may be required for marketing approvals in the Otsuka International Territory or otherwise performed with respect to the Otsuka International Territory that are incremental to those included in the current global development plan. The Company’s obligations related to the conduct of the current global development plan include the associated manufacturing and supply services for vadadustat.

Under the Otsuka International Agreement, Otsuka is to be solely responsible for the conduct of all medical affairs and commercialization activities in the Otsuka International Territory pursuant to underlying plans as reviewed and discussed by the parties. If approved by the relevant jurisdictional regulatory health authorities in the Otsuka International Territory, the Company will provide vadadustat to Otsuka for commercialization pursuant to a separate supply agreement to be negotiated. Additionally, the parties agreed not to promote, market or sell any competing product in the territory covered by the agreement.

The activities under the Otsuka International Agreement are governed by a JSC formed by an equal number of representatives from the Company and Otsuka. The JSC coordinates and monitors the parties’ activities under the collaboration. Among other responsibilities, the JSC manages the overall strategic alignment between the parties, oversees the current global development plan and reviews other detailed plans setting forth any other development activities that may be conducted under the arrangement. Additionally, the parties established a JDC, which is comprised of an equal number of representatives from the Company and Otsuka. Among other responsibilities, the JDC shares information related to, and reviews and discusses activities and progress under, the current global development plan and any other development that may be conducted pursuant to the collaboration. The Company and Otsuka also established a JMC, which is comprised of an equal number of representatives from each of the parties. Among other responsibilities, the JMC oversees the manufacturing plan and related manufacturing activities. In support of the potential commercialization of vadadustat, the parties established a JCC, which is comprised of an equal number of representatives from the Company and Otsuka. Among other responsibilities, the JCC manages the activities and progress under the commercialization and non-promotional activities plan and all other sales and marketing activities. The Company has retained final decision-making authority with respect to certain matters. Otsuka has retained final decision-making authority with respect to all commercialization matters, other than decisions related to certain marketing matters.

Under the terms of the Otsuka International Agreement, the Company received a $73.0 million up-front, non-refundable, non-creditable cash payment. The Company also received a payment of approximately $0.2 million which represents reimbursement for Otsuka’s share of costs previously incurred by the Company in implementing the current global development plan in excess of a specified threshold during the quarter ended March 31, 2017. Commencing in the second quarter of 2017, Otsuka began to contribute, as required by the Otsuka International Agreement, a percentage of the remaining costs incurred under the current global development plan. The Company estimates that Otsuka’s funding of the current global development plan costs subsequent to March 31, 2017 will total roughly $214.3 million or more, depending on the actual current global development plan costs incurred. The costs associated with the performance of any mutually agreed upon development activities in addition to those outlined in the current global development plan will be subject to a cost sharing or reimbursement mechanism as set forth in the Otsuka International Agreement or to be determined by the parties. Otsuka may elect to conduct additional studies of vadadustat in the EU, subject to the Company’s right to delay such studies based on its objectives outside the Otsuka International Territory. Otsuka will pay a percentage of the costs of any such studies, and the Company will pay its portion of the costs in the form of a credit against future amounts due to the Company under the Otsuka International Agreement. The costs incurred related to any other development activities, which are pursued solely for obtaining or maintaining marketing approval in the Otsuka International Territory or otherwise performed solely with respect to the Otsuka International Territory that are incremental to the development activities included in the current global development plan, will be borne in their entirety by Otsuka. Otsuka will pay costs incurred with respect to medical affairs and commercialization activities in the Otsuka International Territory.

In addition, Otsuka would be required to make certain milestone payments to the Company upon the achievement of specified development, regulatory and commercial events. More specifically, as of June 30, 2020, the Company is eligible to receive up

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to $65.0 million in development milestone payments and up to $52.0 million in regulatory milestone payments for the first licensed product to achieve the associated event. Moreover, the Company is eligible for up to $525.0 million in commercial milestone payments associated with aggregate sales of all licensed products. Additionally, to the extent vadadustat is commercialized, the Company would be entitled to receive tiered royalty payments ranging from the low double digits to the low thirties based on a percentage of net sales. Royalties are due on a country-by-country basis from the date of the first commercial sale of a licensed product in a country until the latest to occur of: (i) the expiration date in such country of the last to expire valid claim within the intellectual property covering the licensed product, (ii) the date of expiration of data or regulatory exclusivity in such country or (iii) the tenth anniversary of the first commercial sale of such licensed product in such country. Due to the uncertainty of pharmaceutical development and the high historical failure rates associated therewith, no milestone or royalty payments may ever be received from Otsuka. There are no cancellation, termination or refund provisions in the Otsuka International Agreement that contain material financial consequences to the Company.

Unless earlier terminated, the Otsuka International Agreement will expire upon the expiration of the royalty term in the last country in the Otsuka International Territory. Either party may terminate the Otsuka International Agreement in its entirety upon an uncured material breach or insolvency on the part of the other party. Otsuka may terminate the Otsuka International Agreement in its entirety or for a specific region in the Otsuka International Territory upon 12 months’ prior written notice at any time after the release of the first top-line data from the global Phase 3 development program for vadadustat. In the event of termination of the Otsuka International Agreement, all rights and licensees granted to Otsuka under the Otsuka International Agreement will automatically terminate, and the licenses granted to the Company will become freely sublicensable, but potentially subject to a future royalty. In addition, the upfront payment, all development costs and milestone payments received by the Company prior to such termination will not be eligible for refund to Otsuka.

Revenue Recognition

The Company has accounted for the Otsuka International Agreement separately from the collaboration arrangement with Otsuka with respect to the U.S. due to the lack of interrelationship and interdependence of the elements and payment terms within each of the contracts as they relate to the respective territories. Accordingly, the Company has applied the guidance in ASC 606 solely in reference to the terms and conditions of the Otsuka International Agreement, while the Otsuka U.S. Agreement has continued to be accounted for as a discrete agreement in its own right. The Company evaluated the Otsuka International Agreement in accordance with the provisions of ASC 606 and concluded that the contract counterparty, Otsuka, is a customer. The Company’s arrangement with Otsuka related to the Otsuka International Territory contains the following material promises under the contract at inception: (i) license under certain of the Company’s intellectual property to develop and commercialize (including the associated packaging) vadadustat and products containing or comprising vadadustat and development services to be performed pursuant to the current global development plan (the License and Development Services Deliverable), (ii) rights to future intellectual property (the Future IP Deliverable) and (iii) joint committee services (the Committee Deliverable).

The Company has identified three performance obligations in connection with its obligations under the Otsuka International Agreement. Factors considered in making this assessment of which material promises will be accounted for as a separate performance obligation included, among other things, the capabilities of the collaboration partner, whether any other vendor sells the item separately, whether the good or service is highly interdependent or highly interrelated to the other elements in the arrangement, and whether there are other vendors that can provide the items.  Additionally, the Otsuka International Agreement does not include a general right of return. The three performance obligations identified in connection with the Company’s obligations under the Otsuka International Agreement are as follows:  

(i)License and Development Services Combined (License Performance Obligation)

The Company has determined that the license granted to Otsuka pursuant to the Otsuka International Agreement will be accounted for as component of the development services as opposed to a separately identified promise. Although the rights granted under the license are effective throughout the entire term of the arrangement, the Company will not be providing significant additional contributions of study data, regulatory submissions and regulatory approvals beyond the point that services under the current global development plan are conducted. Therefore, the period and pattern of recognition would be the same for both the license and the development services. Consequently, the Company has concluded that the license will effectively be treated as an inherent part of the associated development services promise instead of as a separate promise. As a result, the License and Development Services Deliverable will be treated as a single performance obligation (the License Performance Obligation).  

(ii)Rights to Future Intellectual Property (Future IP Performance Obligation)

The License and Development Services Deliverable is distinct from the Future IP Deliverable because Otsuka can obtain the value of the license using the clinical trial materials implicit in the development services without the receipt of any other

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intellectual property that may be discovered or developed in the future. The Future IP Deliverable is distinct from the Committee Deliverable because the Committee Deliverable has no bearing on the value to be derived from the rights to potential future intellectual property. As a result, the Future IP Deliverable qualifies as a separate performance obligation.

(iii)Joint Committee Services (Committee Performance Obligation)

The License and Development Services Deliverable is distinct from the Committee Deliverable because Otsuka can obtain the value of the license using the clinical trial materials implicit in the development service without the joint committee services. The Committee Deliverable is distinct from the Future IP Deliverable because the Committee Deliverable has no bearing on the value to be derived from the rights to potential future intellectual property. As a result, the Committee Deliverable qualifies as a separate performance obligation.

The Company allocates the transaction price to each performance obligation based on the Company’s best estimate of the relative standalone selling price. The Company developed a best estimate of standalone selling price for the Committee Performance Obligation after considering the nature of the services to be performed and estimates of the associated effort and rates applicable to such services that would be expected to be realized under similar contracts. The Company developed a best estimate of standalone selling price for the Future IP Performance Obligation primarily based on the likelihood that additional intellectual property covered by the license conveyed will be developed during the term of the arrangement. The Company did not develop a best estimate of standalone selling price for the License Performance Obligation due to the following: (i) the best estimates of standalone selling price associated with the Future IP Performance Obligation was determined to be immaterial and (ii) the period of performance and pattern of recognition for the License Performance Obligation and the Committee Performance Obligation was determined to be similar. The Company has concluded that a change in the key assumptions used to determine the best estimate of standalone selling price for each performance obligation would not have a significant impact on the allocation of arrangement consideration.

The transaction price at inception was comprised of: (i) the up-front payment, (ii) the cost share payment with respect to amounts incurred by the Company during the quarter ended March 31, 2017, and (iii) an estimate of the cost share payments to be received with respect to amounts incurred by the Company subsequent to March 31, 2017. No development or regulatory milestones were included in the transaction price at inception, as all milestone amounts were fully constrained. As part of its evaluation of the constraint, the Company considered numerous factors, including whether the receipt of the milestone payment is outside the control of the Company and contingent upon success in future clinical trials and the licensee’s efforts. Any consideration related to sales-based milestones (including royalties) will be recognized when the related sales occur as they were determined to relate predominantly to the license granted to Otsuka and therefore have also been excluded from the transaction price.

The Company re-evaluates the transaction price in each reporting period and as uncertain events are resolved or other changes in circumstances occur. In the event that there is consideration received by a customer in the form of activities performed by such customer under the global development plan, such consideration is reflected as a reduction to the transaction price as contra revenue rather than as an expense because the associated services are not distinct from the License Performance Obligation.

No amounts were allocated to the Future IP Performance Obligation because the associated best estimate of standalone selling price was determined to be immaterial. Due to the similar performance period and recognition pattern between the License Performance Obligation and the Committee Performance Obligation, the transaction price has been allocated to the License Performance Obligation and the Committee Performance Obligation on a combined basis. Accordingly, the Company will recognize revenue related to the allocable arrangement consideration on a proportional performance basis as the underlying development services are performed pursuant to the current global development plan which is commensurate with the period and consistent with the pattern over which the Company’s obligations are satisfied for both the License Performance Obligation and the Committee Performance Obligation. Effectively, the Company has treated the arrangement as if the License Performance Obligation and the Committee Performance Obligation are a single performance obligation.

As of June 30, 2020, the transaction price totaling $287.5 million is comprised of: (i) the up-front payment of $73.0 million, (ii) the cost share payment with respect to amounts incurred by the Company during the quarter ended March 31, 2017 of $0.2 million, and (iii) an estimate of the net cost share consideration to be received with respect to amounts incurred by the Company subsequent to March 31, 2017 of $214.3 million. As of June 30, 2020, no development or regulatory milestones have been assessed as probable of being reached and thus have been fully constrained.

During the three months ended June 30, 2020 and 2019, the Company recognized revenue totaling approximately $12.8 million and $22.5 million, respectively, and approximately $32.2 million and $44.4 million during the six months ended June 30, 2020 and 2019, respectively, with respect to the Otsuka International Agreement. The revenue is classified as collaboration revenue

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in the accompanying unaudited condensed consolidated statements of operations. As of June 30, 2020, there is approximately $17.5 million of deferred revenue related to the Otsuka International Agreement of which $8.2 million is classified as current and $9.3 million is classified as long-term in the accompanying unaudited condensed consolidated balance sheet based on the performance period of the underlying obligations. Additionally, as of June 30, 2020, there are approximately $1.8 million in contract liabilities (included in accounts payable) and $0.2 million in prepaid expenses and other current assets in the accompanying unaudited condensed consolidated balance sheet. As of December 31, 2019, there was $4.0 million in accounts receivable in the consolidated balance sheet.

Janssen Pharmaceutica NV Research and License Agreement

Summary of Agreement

On February 9, 2017, the Company entered into a Research and License Agreement, the Janssen Agreement, with Janssen Pharmaceutica NV, or Janssen, a subsidiary of Johnson & Johnson, pursuant to which Janssen granted the Company an exclusive license under certain intellectual property rights to develop and commercialize worldwide certain HIF prolyl hydroxylase targeted compounds.

Under the terms of the Janssen Agreement, Janssen granted to the Company a license for a three-year research term to conduct research on the HIF compound portfolio, which research term is now expired. During the research term, the Company could designate one or more compounds as candidates for development and commercialization. Once a compound was designated for development and commercialization, the Company was to be solely responsible for the development and commercialization of the compound worldwide at its own cost and expense.

Under the terms of the Janssen Agreement, the Company made an upfront payment of $1.0 million in cash to Janssen and issued a warrant to purchase 509,611 shares of the Company’s common stock. In addition, Janssen could be eligible to receive up to an aggregate of $16.5 million from the Company in specified development milestone payments on a product-by-product basis. Janssen will also be eligible to receive up to $215.0 million from the Company in specified commercial milestones as well as tiered, escalating royalties ranging from a low- to mid-single digit percentage of net sales, on a product-by-product basis, and subject to reduction upon expiration of patent rights or the launch of a generic product in the territory.

Unless earlier terminated, the Janssen Agreement will expire on a product-by-product and country-by-country basis upon the expiration of the last royalty term, which ends upon the longer of the expiration of the patents licensed under the Janssen Agreement, the expiration of regulatory exclusivity for such product, or 10 years from first commercial sale of such product. The Company may terminate the Janssen Agreement in its entirety or only with respect to a particular licensed compound or product upon 180 days’ prior written notice to Janssen. The parties also have customary termination rights, subject to a cure period, in the event of the other party’s material breach of the Janssen Agreement or in the event of certain additional circumstances.

As discussed above, the Company issued a Common Stock Purchase Warrant, or the Warrant, to Johnson & Johnson Innovation – JJDC, Inc., or JJDC, an affiliate of Janssen, for 509,611 shares of the Company’s common stock at an exercise price of $9.81 per share. The Warrant is exercisable by JJDC, in whole or in part, at any time prior to February 9, 2022. The Warrant and the shares issuable upon exercise of the Warrant will be sold and issued without registration under the Securities Act of 1933, as amended, or the Securities Act. The Company recorded the fair value of the Warrant in the amount of $3.4 million to additional paid-in capital and research and development expense in March 2017.

Vifor Pharma License Agreement

Summary of Agreement

On May 12, 2017, the Company entered into a License Agreement, or the Vifor Agreement, with Vifor (International) Ltd., or Vifor Pharma, pursuant to which the Company granted Vifor Pharma an exclusive license to sell vadadustat solely to Fresenius Kidney Care Group LLC, or FKC, an affiliate of Fresenius Medical Care North America, or FMCNA, in the United States. On April 8, 2019, the Company and Vifor Pharma entered into an Amended and Restated License Agreement, or the Vifor Amended Agreement, which amended and restated in full the Vifor Agreement.

Pursuant to the Vifor Amended Agreement, the Company granted Vifor Pharma an exclusive license to sell vadadustat to FKC and to certain third party dialysis organizations approved by the Company, or Third Party Dialysis Organizations, in the United States.

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The license granted under the Vifor Amended Agreement will become effective upon (i) the approval of vadadustat for DD-CKD patients by the FDA, (ii) the earlier of a determination by the Centers for Medicare & Medicaid Services, or CMS, that vadadustat will be reimbursed using Medicare’s bundled reimbursement model or that vadadustat will be reimbursed using the Transitional Drug Add-On Payment Adjustment, and (iii) payment by Vifor Pharma of a $25.0 million milestone upon the occurrence of (i) and (ii).

The Vifor Amended Agreement is structured as a profit share arrangement between the Company and Vifor Pharma in which the Company will receive a majority of the profit, after deduction of certain amounts relating to Vifor Pharma’s costs, from Vifor Pharma’s sales of vadadustat to FKC and the Third Party Dialysis Organizations in the United States. The Company will share the milestone payment and the revenue from the profit share with Otsuka pursuant to the Otsuka U.S. Agreement. The Company currently retains rights to commercialize vadadustat for use in the NDD-CKD market and in other dialysis organizations in the United States, which will be done in collaboration with Otsuka following FDA approval.

The Vifor Amended Agreement provides that the Company and Vifor Pharma will enter into a commercial supply agreement for vadadustat pursuant to which the Company will supply all of Vifor Pharma’s requirements for vadadustat in the United States. In addition, Vifor Pharma will enter into supply arrangements with FKC and the Third Party Dialysis Organizations that will govern the terms pursuant to which Vifor Pharma will supply vadadustat to FKC and the Third Party Dialysis Organizations for use in patients at its dialysis centers in the United States. During the term of the Vifor Amended Agreement, Vifor Pharma is not permitted to sell any HIF product that competes with vadadustat in the United States to FKC or its affiliates or to any Third Party Dialysis Organization, and the Company may not directly supply vadadustat to FKC or any other affiliate of FMCNA or any Third Party Dialysis Organization.

Unless earlier terminated, the Vifor Amended Agreement will expire upon the later of the expiration of all patents that claim or cover vadadustat or expiration of marketing or regulatory exclusivity for vadadustat in the United States. Vifor Pharma may terminate the Vifor Amended Agreement in its entirety upon 12 months’ prior written notice after the release of the first top-line data in the vadadustat global Phase 3 program for DD-CKD patients. In addition, either party may, subject to a cure period, terminate the Vifor Amended Agreement in the event of the other party’s uncured material breach or bankruptcy. The Company may terminate the Vifor Amended Agreement (or suspend the license) upon the occurrence of certain events, such as for specific violations of the Vifor Amended Agreement, Vifor Pharma’s failure to achieve certain sales levels, or if there are changes in Vifor Pharma’s relationship with FKC or in applicable laws and regulations related to the reimbursement of drugs like vadadustat at dialysis clinics, or if Vifor Pharma contests the validity or enforceability of any patent controlled by the Company that covers vadadustat. The Vifor Amended Agreement also includes a standstill provision and customary representations and warranties.

Investment Agreement

In connection with the Vifor Agreement, in May 2017, the Company and Vifor Pharma entered into an investment agreement, or the Investment Agreement, pursuant to which the Company sold an aggregate of 3,571,429 shares of the Company’s common stock, or the Shares, to Vifor Pharma at a price per share of $14.00 for a total of $50.0 million. The amount representing the premium over the closing stock price of $12.69 on the date of the transaction, totaling $4.7 million, was determined by the Company to represent consideration related to the Vifor Agreement. As the parties’ rights under the Vifor Agreement are conditioned upon (a) the approval of vadadustat for DD-CKD patients by the FDA; (b) the earlier of a determination by CMS that vadadustat will be reimbursed using Medicare’s bundled reimbursement model or that vadadustat will be reimbursed using the Transitional Drug Add-On Payment Adjustment; and (c) payment by Vifor Pharma of a $25.0 million milestone upon the occurrence of (a) and (b), in accordance with ASC 606, the Company has determined that the full transaction price is fully constrained. As part of its evaluation of the constraint, the Company considered numerous factors, including clinical and regulatory risks that must be overcome in order for the parties’ rights to become effective and the probability of the $25.0 million milestone being achieved. Accordingly, the $4.7 million continues to be recorded as deferred revenue in the accompanying unaudited condensed consolidated balance sheets. Upon the satisfaction of the aforementioned conditions, revenue will be recognized as the Company supplies vadadustat to Vifor Pharma using a proportional performance method.

Vifor Pharma agreed to a lock-up restriction such that it agreed not to sell the Shares for a period of time following the effective date of the Investment Agreement as well as a customary standstill agreement. In addition, the Investment Agreement contains voting agreements made by Vifor Pharma with respect to the Shares. The Shares have not been registered pursuant to the Securities Act, and were issued and sold in reliance upon the exemption from registration contained in Section 4(a)(2) of the Securities Act and Rule 506 promulgated thereunder.

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Priority Review Voucher Letter Agreement

On February 14, 2020, the Company entered into a letter agreement, or the Letter Agreement, with Vifor Pharma relating to Vifor Pharma’s agreement with a third party to purchase a Priority Review Voucher, or the PRV, issued by the FDA, subject to satisfaction of customary closing conditions, or the PRV Purchase. A PRV entitles the holder to priority review of a New Drug Application, or NDA, or a Biologics License Application for a new drug, which reduces the target FDA review time to six months after official acceptance of the submission, and could lead to expedited approval. Pursuant to the Letter Agreement, Akebia paid Vifor Pharma $10.0 million in connection with the closing of the PRV Purchase. Vifor Pharma is obligated to retain all rights to, and maintain the validity of, the PRV until Akebia and Vifor Pharma (a) enter into a definitive agreement setting forth the financial and other terms by which Vifor Pharma will assign the PRV to Akebia for use with Akebia’s planned NDA for vadadustat for the treatment of anemia due to CKD in both dialysis-dependent and non-dialysis dependent patients, or (b) make a mutual decision to sell the PRV and share the proceeds based on certain terms.

During the quarter ended March 31, 2020, the $10.0 million payment to Vifor Pharma was recorded to research and development expense in the unaudited condensed consolidated statement of operations and as an operating cash outflow in the unaudited condensed consolidated statement of cash flows.

License Agreement with Panion & BF Biotech, Inc.

As a result of the Merger, the Company had a license agreement, which was amended from time to time, with Panion & BF Biotech, Inc., or Panion, under which Keryx, the Company’s wholly owned subsidiary, was the contracting party, or the Panion License Agreement, pursuant to which Keryx in-licensed the exclusive worldwide rights, excluding certain Asian-Pacific countries, or the Licensor Territory, for the development and commercialization of ferric citrate.

On April 17, 2019, the Company and Panion entered into a second amended and restated license agreement, or the Panion Amended License Agreement, which amends and restates in full the Panion License Agreement, effective as of April 17, 2019. The Panion Amended License Agreement provides Keryx with an exclusive license under Panion-owned know-how and patents covering the rights to sublicense, develop, make, use, sell, offer for sale, import and export ferric citrate worldwide, excluding the Licensor Territory. The Panion Amended License Agreement also provides Panion with an exclusive license under Keryx-owned patents covering the rights to sublicense (with the Company’s written consent), develop, make, use, sell, offer for sale, import and export ferric citrate in certain countries in the Licensor Territory. Consistent with the Panion License Agreement, under the Panion Amended License Agreement, Panion is eligible to receive from the Company or any sublicensee royalty payments based on a mid-single digit percentage of sales of ferric citrate in the Company’s licensed territories. The Company is eligible to receive from Panion or any sublicensee royalty payments based on a mid-single digit percentage of net sales of ferric citrate in Panion’s licensed territories.

The Panion Amended License Agreement terminates upon the expiration of each of the Company’s and Panion’s obligations to pay royalties thereunder. In addition, the Company may terminate the Panion Amended License Agreement (i) in its entirety or (ii) with respect to one or more countries in the Company’s licensed territory, in either case upon 90 days’ notice. The Company and Panion also each have the right to terminate the Panion Amended License Agreement upon the occurrence of a material breach of the Panion Amended License Agreement by the other party, subject to certain cure provisions, or certain insolvency events. The Panion Amended License Agreement also provides that, on a country-by-country basis, until the second anniversary of the expiration of the obligation of the Company or Panion, as applicable, to pay royalties in a country in which such party has ferric citrate for sale on the date of such expiration, neither the other party nor its affiliates will, directly or indirectly, sell, distribute or otherwise commercialize or supply or cause to supply ferric citrate to a third party for sale or distribution in such country.

The Panion Amended License Agreement includes customary terms relating to, among others, indemnification, confidentiality, remedies, and representations and warranties. In addition, the Panion Amended License Agreement provides that each of the Company and Panion has the right, but not the obligation, to conduct litigation against any infringer of certain patent rights under the Panion Amended License Agreement in certain territories.

The Company recognized royalty payments due to Panion of approximately $2.8 million and $2.6 million during the three months ended June 30, 2020 and 2019, respectively, and approximately $5.3 million and $4.7 million during the six months ended June 30, 2020 and 2019, respectively, relating to the Company’s sales of Auryxia in the United States and JT and Torii’s net sales of Riona in Japan, as the Company is required to pay a mid-single digit percentage of net sales of ferric citrate in the Company’s licensed territories to Panion under the terms of the Panion Amended License Agreement.

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Sublicense Agreement with Japan Tobacco, Inc. and its subsidiary, Torii Pharmaceutical Co., Ltd.

Summary of Agreement

As a result of the Merger, the Company has an Amended and Restated Sublicense Agreement, which was amended in June 2013, with JT and Torii, or the JT and Torii Sublicense Agreement, under which Keryx, the Company’s wholly owned subsidiary, remains the contracting party. Under the JT and Torii Sublicense Agreement, JT and Torii obtained the exclusive sublicense rights for the development and commercialization of ferric citrate hydrate in Japan. JT and Torii are responsible for the future development and commercialization costs in Japan.

Ferric citrate hydrate is currently approved by the Japanese Ministry of Health, Labour and Welfare for manufacturing and marketing in Japan for the treatment of hyperphosphatemia in patients with CKD. Ferric citrate hydrate is being marketed in Japan by Torii, under the brand name Riona. During the three months ended June 30, 2020, JT and Torii announced the filing of a supplemental NDA with the Pharmaceuticals and Medical Devices Agency seeking an additional indication for Riona to treat adult patients with IDA in Japan. The Company is eligible to receive royalty payments based on a tiered double-digit percentage of net sales of Riona in Japan escalating up to the mid-teens, subject to certain reductions upon expiration or termination of the Amended and Restated License Agreement between Keryx and Panion, by which Keryx in-licensed the exclusive worldwide rights, excluding certain Asian-Pacific countries, for the development and commercialization of ferric citrate. The Company is entitled to receive up to an additional $55.0 million upon the achievement of certain annual net sales milestones.

The sublicense under the JT and Torii Sublicense Agreement terminates upon the expiration of all underlying patent rights. Also, JT and Torii may terminate the JT and Torii Sublicense Agreement with or without cause upon at least six months prior written notice to us. Additionally, either party may terminate the JT and Torii Sublicense Agreement for cause upon 60 days’ prior written notice after the breach of any uncured material provision of the JT and Torii Sublicense Agreement, or after certain insolvency events.

Revenue Recognition

The Company evaluated the elements of the JT and Torii Sublicense Agreement in accordance with the provisions of ASC 606 and concluded that the contract counterparty, JT and Torii, is a customer. The Company’s arrangement with JT and Torii contains the following material promises under the contract at inception: (i) exclusive license to develop and commercialize ferric citrate hydrate in Japan (the License Deliverable), (ii) supply of ferric citrate hydrate until JT and Torii could secure their own source (the Supply Deliverable), (iii) knowledge transfer, and (iv) rights to future know-how.

The Company identified two performance obligations in connection with its obligations under the JT and Torii Sublicense Agreement: (i) License and Supply Performance Obligation and (ii) Rights to Future Know-How Performance Obligation. The Company allocated the transaction price to each performance obligation based on the Company’s best estimate of the relative standalone selling price. The Company developed a best estimate of the standalone selling price for the Rights to Future Know-How Performance Obligation primarily based on the likelihood that additional intellectual property covered by the license conveyed will be developed during the term of the arrangement and determined it immaterial. As such, the Company did not develop a best estimate of standalone selling price for the License and Supply Performance Obligation and allocated the entire transaction price to this performance obligation. Additionally, as of the consummation of the Merger, the services associated with the License and Supply Performance Obligation were completed and JT and Torii had secured their own source to manufacture ferric citrate hydrate. As such, any initial license fees as well as any development-based milestones and manufacturing fee revenue were received and recognized prior to the Merger. The Company determined that the remaining consideration that may be payable to the Company under the terms of the sublicense agreement are either quarterly royalties on net sales or payments due upon the achievement of sales-based milestones. In accordance with ASC 606, the Company recognizes sales-based royalties, including milestone payments based on the level of sales, when the related sales occur as these amounts have been determined to relate predominantly to the license granted to JT and Torii and therefore are recognized at the later of when the performance obligation is satisfied, or the related sales occur.

The Company recognized license revenue of $1.7 million and $1.5 million during the three months ended June 30, 2020 and 2019, respectively, and $2.9 million and $2.7 million during the six months ended June 30, 2020 and 2019, respectively, related to royalties earned on net sales of Riona in Japan. The Company records the associated mid-single digit percentage of net sales royalty expense due to Panion, the licensor of Riona, in the same period as the royalty revenue from JT and Torii is recorded.

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5.Business Combination

On December 12, 2018, the Company completed the Merger with Keryx. Keryx’s proprietary product, Auryxia, is approved by the FDA for two indications: (1) the control of serum phosphorus levels in adult patients with DD-CKD, or the Hyperphosphatemia Indication and (2) the treatment of iron deficiency anemia in adult patients with NDD-CKD, or the IDA Indication.    

Pursuant to the terms and conditions of the Merger Agreement, each outstanding Keryx Share, excluding the Baupost Additional Shares, as defined below, and each outstanding Keryx equity award were converted into Akebia Shares and substantially similar Akebia equity awards, respectively, at an exchange ratio of 0.37433 for a total fair value consideration of $527.8 million consisting of the following (in thousands):

Fair value of 57,773,090 Akebia Shares	$	516,492
Fair value of 602,752 Akebia RSUs	304
Fair value of 3,967,290 Akebia stock options	10,958
Total consideration	$	527,754

Immediately prior to the Merger, Baupost Group Securities, L.L.C., or Baupost, agreed to convert its $164.7 million of Keryx’s Convertible Notes into 35,582,335 Keryx Shares, in accordance with the terms of the governing indenture agreement, in exchange for an additional 4,000,000 Keryx Shares, or the Baupost Additional Shares. The aggregate 39.6 million Keryx Shares were then converted into Akebia Shares at the 0.37433 exchange ratio. The fair value of the Baupost Additional Shares, on an as-converted basis, of $13.4 million has been excluded from the purchase price and recorded within selling, general and administrative expenses in the Company’s consolidated financial statements, as the issuance of those shares by Keryx is considered to be a separate transaction under ASC 805, Business Combinations, since it was entered into by or on behalf of the acquirer or primarily for the benefit of the acquirer or the combined entity.

The Company allocated the $527.8 million purchase price to the identifiable assets acquired and liabilities assumed in the business combination at their fair values as of December 12, 2018 as follows (in thousands):

Cash and cash equivalents	$	5,257
Inventory	235,597
Trade accounts receivable, net	15,834
Prepaid expenses and other current assets	8,399
Goodwill	55,053
Intangible assets:
Developed product rights for Auryxia	329,130
Other intangible assets	545
Property and equipment, net	3,646
Other assets	14,441
Accounts payable	(17,570)
Accrued expenses	(42,972)
Deferred tax liability	(35,096)
Debt	(15,000)
Fair value of unfavorable executory contract	(29,510)
Total purchase price	$	527,754

In performing the purchase price allocation, the Company considered, among other factors, the intended future use of acquired assets, analysis of historical financial performance and estimates of future performance of Keryx’s business.

As part of the purchase price allocation, the Company identified developed product rights for Auryxia as the primary intangible asset. The fair value of the developed product rights for Auryxia was determined using the multi-period excess earnings method which is a variation of the income approach, and is a valuation technique that provides an estimate of the fair value of an asset based on the principle that the value of an intangible asset is equal to the present value of the incremental after-tax cash flows attributable to the asset, after taking charges for the use of other assets employed by the business. Key estimates and

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assumptions used in this model were projected revenues and expenses related to the asset, estimated contributory asset charges, and a risk-adjusted discount rate of 20.0% used to calculate the present value of the future expected cash inflows from the asset. The intangible asset is being amortized on a straight-line basis over its estimated useful life, which at the time of the Merger was estimated to be nine years. During the second quarter of 2020, the Company identified indicators of impairment related to the developed product rights for Auryxia and recorded an impairment charge of $115.5 million and made a corresponding adjustment to the estimated useful life of the developed product rights for Auryxia from nine years to seven years (see Note 9 for additional information).

The Company also identified an executory contract in the supply agreement between Keryx and BioVectra Inc., or BioVectra, which includes future firm purchase commitments. This executory contract was deemed to have an off-market element related to the amount of purchase commitments that exceed the current forecast and as such, the Company recorded a liability in purchase accounting. As of the acquisition date, the fair value of the off-market element was $29.5 million. During the second quarter of 2020, the Company recorded an $11.0 million increase to the liability for excess purchase commitments and a corresponding charge to cost of goods sold (see Note 14 for additional information).

The goodwill represents the excess of the purchase price over the estimated fair value of net assets acquired. The factors contributing to the recognition of goodwill were based on several strategic and synergistic benefits that were expected to be realized from the Merger. These benefits included the expectation that the combined company would establish itself as a leading renal company with enhanced position and large market opportunity, synergistic utilization of Keryx’s commercial organization, and strengthening the combined company’s financial profile. Such goodwill is not deductible for tax purposes.

In connection with the Merger, the Company identified a deferred tax liability of $35.1 million as a result of the difference in the book basis and tax basis related to the identifiable inventory, other intangible assets, net and other liability. In determining the deferred tax liability to be recorded the Company elected to first consider the recoverability of the deferred tax assets acquired in the acquisition before considering the recoverability of the acquirer’s existing deferred tax assets.

6.Available For Sale Securities

Cash, cash equivalents, and available for sale securities at June 30, 2020 and December 31, 2019 consisted of the following:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
	(in thousands)
June 30, 2020
Cash and cash equivalents	$	245,406	$	—	$	—	$	245,406
Available for sale securities:
U.S. government debt securities	$	49,952	$	—	$	(9)	$	49,943
Total available for sale securities	$	49,952	$	—	$	(9)	$	49,943
Total cash, cash equivalents, and available for sale securities	$	295,358	$	—	$	(9)	$	295,349

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
	(in thousands)
December 31, 2019
Cash and cash equivalents	$	147,449	$	—	$	—	$	147,449
Available for sale securities:
Certificates of deposit	$	245	$	—	$	—	$	245
Total available for sale securities	$	245	$	—	$	—	$	245
Total cash, cash equivalents, and available for sale securities	$	147,694	$	—	$	—	$	147,694

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The estimated fair value of the Company’s available for sale securities balance at June 30, 2020, by contractual maturity, was as follows (in thousands):

Due in one year or less	$	49,943
Due after one year	—
Total available for sale securities	$	49,943

There were no realized gains or losses on available for sale securities for the three and six months ended June 30, 2020 and 2019. The following table summarizes the Company’s available for sale securities that were in a continuous unrealized loss position, but were not deemed to be other-than temporarily impaired, as of June 30, 2020:

	Unrealized Loss for Less Than 12 Months				Unrealized Loss for 12 Months or More				Total
	Gross Unrealized Losses		Estimated Fair Value		Gross Unrealized Losses		Estimated Fair Value		Gross Unrealized Losses		Estimated Fair Value
	(in thousands)
June 30, 2020
Available for sale securities:
U.S. government debt securities	$	(9)	$	49,943	$	—	$	—	$	(9)	$	49,943
Total	$	(9)	$	49,943	$	—	$	—	$	(9)	$	49,943

There were five securities as of June 30, 2020, that were in an unrealized loss position. The contractual terms of these securities do not permit the issuer to settle the securities at a price less than the amortized cost basis of the investment. As of June 30, 2020, the Company does not intend to sell these securities and it was not more likely than not that the Company would be required to sell these securities before the recovery of their amortized cost basis, which may be at maturity. The unrealized loss was determined to be non-credit related and was recognized in other comprehensive loss in the Company's unaudited condensed consolidated statements of operations and comprehensive loss during the three and six months ended June 30, 2020. As such, the Company did not recognize any credit losses during the three and six months ended June 30, 2020. Additionally, the Company did not have any available for sale securities that were in an unrealized loss position as of December 31, 2019.

7.Fair Value of Financial Instruments

The Company utilizes a portfolio management company for the valuation of the majority of its investments. This company is an independent, third-party vendor recognized to be an industry leader with access to market information that obtains or computes fair market values from quoted market prices, pricing for similar securities, recently executed transactions, cash flow models with yield curves and other pricing models. For valuations obtained from the pricing service, the Company performs due diligence to understand how the valuation was calculated or derived, focusing on the valuation technique used and the nature of the inputs.

Based on the fair value hierarchy, the Company classifies its cash equivalents and available for sale securities within Level 1 or Level 2. This is because the Company values its cash equivalents and available for sale securities using quoted market prices or alternative pricing sources and models utilizing market observable inputs.

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Assets measured or disclosed at fair value on a recurring basis as of June 30, 2020 and December 31, 2019 are summarized below:

	Fair Value Measurements Using
	Level 1		Level 2		Level 3		Total
	(in thousands)
June 30, 2020
Assets:
Cash and cash equivalents	$	245,406	$	—	$	—	$	245,406
U.S. government debt securities	—		49,943		—		49,943
	$	245,406	$	49,943	$	—	$	295,349
Liabilities:
Derivative liability	$	—	$	—	$	1,890	$	1,890
	$	—	$	—	$	1,890	$	1,890

	Fair Value Measurements Using
	Level 1		Level 2		Level 3		Total
	(in thousands)
December 31, 2019
Assets:
Cash and cash equivalents	$	147,449	$	—	$	—	$	147,449
Certificates of deposit	—		245		—		245
	$	147,449	$	245	$	—	$	147,694
Liabilities:
Derivative liability	$	—	$	—	$	1,650	$	1,650
	$	—	$	—	$	1,650	$	1,650

The Company’s Loan Agreement with Pharmakon (see Note 11) contains certain provisions that change the underlying cash flows of the debt instrument, including a potential extension to the interest-only period dependent on both no event of default having occurred and continuing and on the Company achieving certain regulatory and revenue conditions. The Company also assessed the acceleration of the obligations under the Loan Agreement under an event of default. In addition, under certain circumstances, a default interest rate will apply on all outstanding obligations during the occurrence and continuance of an event of default. In accordance with ASC 815, the Company concluded that these features are not clearly and closely related to the host instrument, and represent a single compound derivative that is required to be re-measured at fair value on a quarterly basis.

The events of default include maintaining, on an annual basis, a minimum liquidity threshold starting in 2021, and on a quarterly basis, a minimum net sales threshold for Auryxia starting in the fourth quarter of 2020. The Company recorded a derivative liability related to the Company’s Loan Agreement with Pharmakon of $1.9 million and $1.7 million as of June 30, 2020 and December 31, 2019, respectively. The Company classified the derivative liability as a non-current liability on the unaudited condensed consolidated balance sheet as of June 30, 2020 and December 31, 2019. The estimated fair value of the derivative liability on both June 30, 2020 and December 31, 2019 was determined using a scenario-based approach and discounted cash flow model that includes principal and interest payments under various scenarios involving clinical development success for vadadustat and various cash flow assumptions. Probabilities surrounding clinical development success were derived using industry benchmarks. Should the Company’s assessment of the probabilities around these scenarios change, including for changes in market conditions, there could be a change to the fair value of the derivative liability.

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The following table provides a roll-forward of the fair value of the derivative liability (in thousands):

Balance at December 31, 2019	$	1,650
Change in fair value of derivative liability, recorded as other expense	90
Balance at Balance at March 31, 2020	$	1,740
Change in fair value of derivative liability, recorded as other expense	150
Balance at June 30, 2020	$	1,890

The Company had no other assets or liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) at June 30, 2020 and December 31, 2019.

Investment securities are exposed to various risks such as interest rate, market and credit risks. When the Company holds investment securities, due to the level of risk associated with certain investment securities and the level of uncertainty related to changes in the value of investment securities, the Company considers if changes in risks in the near term would result in material changes in the fair value of investments.

8.Inventory

The components of inventory, inclusive of step-up as a result of bringing Keryx’s inventory onto Akebia’s books at fair value in connection with the Merger, are summarized as follows:

	June 30, 2020		December 31, 2019
	(in thousands)
Raw materials	$	2,078	$	2,278
Work in process	101,641		137,858
Finished goods	38,636		42,096
Total inventory	$	142,355	$	182,232

Long-term inventory, which primarily consists of raw materials and work in process, is included in other assets in the Company’s unaudited condensed consolidated balance sheets.

	June 30, 2020		December 31, 2019
	(in thousands)
Balance Sheet Classification:
Inventory	$	104,603	$	116,349
Other assets	37,752		65,883
Total inventory	$	142,355	$	182,232

Inventory amounts written down as a result of excess, obsolescence, scrap or other reasons and charged to cost of goods sold totaled $9.9 million and $10.1 million during the three and six months ended June 30, 2020, respectively, in addition to related step-up charges of $6.0 million during the three and six months ended June 30, 2020. Inventory write downs charged to cost of goods sold totaled $1.3 million and $3.0 million during the three and six months ended June 30, 2019, respectively, in addition to related step-up charges of $1.9 million and $2.8 million during the three and six months ended June 30, 2019, respectively. The increase for the three and six months ended June 30, 2020 was primarily related to the write-down of inventory associated with specific lots of Auryxia because it was determined that these lots were not manufactured in conformance with the FDA's GMP guidance relating to validation.

If future sales of Auryxia are lower than expected, the Company may be required to write-down the value of such inventories. Inventory write-downs and losses on purchase commitments are recorded as a component of cost of sales in the unaudited condensed consolidated statement of operations.

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9.Intangible Assets and Goodwill

Intangible Assets

The following table presents the Company’s intangible assets at June 30, 2020 and December 31, 2019 (in thousands):

	June 30, 2020
	Gross Carrying Value		Accumulated Amortization		ASC 842 Adjustment		Total		Estimated useful life
Acquired intangible assets:
Developed product rights for Auryxia	$	213,603	$	(56,119)	—		$	157,484	7 years
Favorable lease	545		(5)		(540)		—		N/A
Total	$	214,148	$	(56,124)	$	(540)	$	157,484

	December 31, 2019
	Gross Carrying Value		Accumulated Amortization		ASC 842 Adjustment		Total		Estimated useful life
Acquired intangible assets:
Developed product rights for Auryxia	$	329,130	$	(37,918)	—		$	291,212	9 years
Favorable lease	545		(5)		(540)		—		N/A
Total	$	329,675	$	(37,923)	$	(540)	$	291,212

On December 12, 2018, the Company completed the Merger, whereby it acquired certain definite-lived intangible assets, including the developed product rights for Auryxia and a favorable lease. The Company amortizes its definite-lived intangible assets acquired as part of the Merger using the straight-line method, which is considered the best estimate of economic benefit, over its estimated useful life. As a result of the adoption of ASC 842 on January 1, 2019, the Company reclassed the remaining balance of the favorable lease intangible asset into the operating lease asset. The Company recorded $9.1 million in amortization expense related to the developed product rights for Auryxia during each of the three months ended June 30, 2020 and 2019 and $18.2 million during each of the six months ended June 30, 2020 and 2019. Estimated future amortization expense for the intangible asset as of June 30, 2020 is as follows (in thousands):

	Total
2020	$	14,317
2021	28,633
2022	28,634
2023	28,633
2024	28,634
Thereafter	28,633
	$	157,484

Auryxia Intangible Asset Impairment

In the second quarter of 2020, in connection with a routine business review, the Company reduced its short-term and long-term Auryxia revenue forecast. This reduction was primarily driven by the compounding impact of the September 2018 CMS decision that rescinded Medicare Part D coverage of Auryxia for the IDA Indication and the related imposition by CMS of a prior authorization requirement for Auryxia for the Hyperphosphatemia Indication. As a result, the Company determined indicators of impairment existed for the developed product rights for Auryxia and performed an undiscounted cash flow analysis pursuant to ASC 360-10, Impairment or Disposal of Long-lived Assets, to determine if the cash flows expected to be generated by the Auryxia asset group over the estimated remaining useful life of the primary assets were sufficient to recover the carrying value of the Auryxia asset group. Based on this analysis, the undiscounted cash flows were not sufficient to recover the carrying value of the Auryxia asset group. As a result, the Company was required to perform Step 3 of the impairment test to determine the fair value of the Auryxia asset group.

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To estimate the fair value, the Company performed a business enterprise valuation for the Auryxia asset group using the income approach, which is based on a discounted cash flow analysis and calculates the fair value by estimating the after-tax cash flows attributable to the asset group and then discounting the after-tax cash flows to present value using a risk-adjusted discount rate. Key estimates and assumptions used in the valuations included projected revenues and expenses related to the asset, estimated contributory asset charges, and a risk-adjusted discount rate of 9.5% to calculate the present value of the future expected cash inflows. The Company believes its assumptions are consistent with the plans and estimates that a market participant would use to manage the business. The discount rates used are intended to reflect the risks inherent in future cash flow projections and were based on an estimate of the weighted average cost of capital, or WACC, of market participants relative to the Auryxia asset group.

As a result of this analysis, the fair value of the Auryxia asset group was below its carrying value, and the Company recorded an impairment charge of $115.5 million during the three months ended June 30, 2020 and made a corresponding adjustment to the estimated useful life of the developed product rights for Auryxia from nine years to seven years. The impairment charge has been entirely allocated to the Company’s only intangible asset, the developed product rights for Auryxia, as all other long-lived assets had fair values that were either equal to or greater than their carrying value. Per ASC 360-10, the carrying amount of a long-lived asset of the group would not be reduced below its fair value. The Company believes its assumptions used to determine the fair value of the Auryxia asset group are reasonable. In the event the estimates and assumptions used in the valuation of the Auryxia asset group, including the forecasted projections, change in the future, additional impairment charges could be recorded in the future.

Goodwill

Goodwill was $55.1 million as of June 30, 2020 and December 31, 2019, derived as follows (in thousands):

Total Merger consideration	$	527,754
Less: Fair value of identified acquired assets and liabilities, net	(472,701)
Goodwill	$	55,053

The Company operates in one operating segment which the Company considers to be the only reporting unit. Goodwill is evaluated at the reporting unit level for impairment on an annual basis as of October 1, and more frequently if indicators are present or changes in circumstances suggest that an impairment may exist. There were no impairments of goodwill during either of the three and six months ended June 30, 2020 or 2019, respectively.

10.Accrued Expenses

Accrued expenses as of June 30, 2020 and December 31, 2019 are as follows:

	June 30, 2020		December 31, 2019
	(in thousands)
Accrued clinical	$	63,046	$	61,815
Product revenue allowances	40,975		30,552
Accrued payroll	9,486		12,604
MTPC - Supply of Validation Drug Product	6,441		—
Lease liability	5,206		4,989
Royalties	2,815		2,713
Accrued commercial manufacturing	2,676		2,680
Professional fees	1,747		3,444
Accrued severance	712		725
Accrued other	9,728		9,549
Total accrued expenses	$	142,832	$	129,071

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11.Debt

Future principal payments on the Term Loans (as defined below) as of June 30, 2020 are as follows (in thousands):

	Principal Payments
	(in thousands)
2020	$	—
2021	—
2022	7,140
2023	30,354
2024	42,506
Thereafter	—
Total before unamortized discount and issuance costs	80,000
Less: unamortized discount and issuance costs	(3,662)
Total term loans	$	76,338

Term Loans

On November 11, 2019, the Company, with Keryx as guarantor, entered into a loan agreement, or the Loan Agreement, with BioPharma Credit PLC as collateral agent and a lender, or the Collateral Agent, and BioPharma Credit Investments V (Master) LP as a lender, pursuant to which term loans in an aggregate principal amount of $100.0 million are made available to the Company in two tranches, subject to certain terms and conditions, or the Term Loans. BioPharma Credit PLC subsequently transferred its interest in the term loans, solely in its capacity as a lender, to its affiliate, BPCR Limited Partnership. The Collateral Agent and BPCR Limited Partnership are collectively referred to as Pharmakon. The first tranche of $80.0 million, or Tranche A, was drawn on November 25, 2019, or the Tranche A Funding Date. The second tranche, available until December 31, 2020, allows the Company to borrow, at its option, an additional $20.0 million, or Tranche B, subject to the satisfaction of customary conditions. The date on which Tranche B is drawn, the Tranche B Funding Date, and each of the Tranche A Funding Date and the Tranche B Funding Date, a Funding Date.

Proceeds from the Term Loans may be used for general corporate purposes. The Company and Keryx entered into a Guaranty and Security Agreement with the Collateral Agent, or the Guaranty and Security Agreement, on the Tranche A Funding Date. Pursuant to the Guaranty and Security Agreement, the Company’s obligations under the Term Loans are unconditionally guaranteed by Keryx, or the Guarantee. Additionally, the obligations of the Company and Keryx under the Term Loans and the Guarantee are secured by a first priority lien on certain assets of the Company and Keryx, including Auryxia and certain related assets, cash, and certain equity interests held by the Company and Keryx, collectively the Collateral.

The Term Loans bear interest at a floating rate per annum equal to the three-month LIBOR rate plus 7.50%, subject to a 2.00% LIBOR floor and a 3.35% LIBOR cap, payable quarterly in arrears. The Term Loans will mature on the fifth anniversary of the Tranche A Funding Date, or the Maturity Date. The Company will repay the principal under the Term Loans in equal quarterly payments starting on the 33rd-month anniversary of the applicable Funding Date or, if certain conditions are met, it will have the option to repay the principal in equal quarterly payments starting on the 48th-month anniversary of the applicable Funding Date, or collectively the Amortization Schedule. Under certain circumstances, unless certain liquidity conditions are met, the Maturity Date may decrease by up to one year, and the Amortization Schedule may correspondingly commence up to one year earlier.  

On the Tranche A Funding Date, the Company paid to Pharmakon a facility fee equal to 2.00% of the aggregate principal amount of the Term Loans, or $2.0 million, in addition to other expenses incurred by Pharmakon and reimbursed by the Company, or Lender Expenses. The Tranche A draw was $77.3 million, net of facility fee, Lender Expenses and issuance costs. The Loan Agreement permits voluntary prepayment at any time in whole or in part, subject to a prepayment premium. The prepayment premium would be 2.00% of the principal amount being prepaid prior to the third anniversary of the applicable Funding Date, 1.00% on or after the third anniversary, but prior to the fourth anniversary, of the applicable Funding Date, and 0.50% on or after the fourth anniversary of the applicable Funding Date but prior to the Maturity Date, and a make-whole premium on or prior to the second anniversary of the applicable Funding Date in an amount equal to foregone interest through the second anniversary of the applicable Funding Date. A change of control triggers a mandatory prepayment of the Term Loans.

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The Loan Agreement contains customary representations, warranties, events of default and covenants of the Company and its subsidiaries, including maintaining, on an annual basis, a minimum liquidity threshold starting in 2021, and on a quarterly basis, a minimum net sales threshold for Auryxia starting in the fourth quarter of 2020. If an event of default occurs and is continuing under the Loan Agreement, the Collateral Agent is entitled to take enforcement action, including acceleration of amounts due under the Loan Agreement. Under certain circumstances, a default interest rate will apply on all outstanding obligations during the occurrence and continuance of an event of default. As of June 30, 2020 and December 31, 2019, the Company determined that no events of default had occurred.

The Company assessed the terms and features of the Loan Agreement in order to identify any potential embedded features that would require bifurcation or any beneficial conversion feature. As part of this analysis, the Company assessed the economic characteristics and risks of the Loan Agreement, including put and call features. The terms and features assessed include a potential extension to the interest-only period dependent on both no event of default having occurred and continuing and on the Company achieving certain regulatory and revenue conditions. The Company also assessed the acceleration of the obligations under the Loan Agreement under an event of default. In addition, under certain circumstances, a default interest rate will apply on all outstanding obligations during the occurrence and continuance of an event of default. In accordance with ASC 815, the Company concluded that these features are not clearly and closely related to the host instrument, and represent a single compound derivative that is required to be re-measured at fair value on a quarterly basis.

The fair value of the derivative liability related to the Company’s Loan Agreement with Pharmakon was $1.9 million and $1.7 million as of June 30, 2020 and December 31, 2019, respectively. The Company classified the derivative liability as a non-current liability on the unaudited condensed consolidated balance sheet as of June 30, 2020.

During the three and six months ended June 30, 2020, the Company recognized approximately $2.2 million and $4.4 million, respectively, of interest expense related to the Loan Agreement.

12.Warrant

In connection with the Janssen Agreement, in February 2017 the Company issued a warrant to purchase 509,611 shares of the Company’s common stock at an exercise price of $9.81 per share. The warrant was fully vested upon issuance and is exercisable in whole or in part, at any time prior to February 9, 2022. The warrant satisfied the equity classification criteria of ASC 815, and is therefore classified as an equity instrument. The fair value at issuance of $3.4 million was calculated using the Black Scholes option pricing model and was charged to research and development expense as it represented consideration for a license for which the underlying intellectual property was deemed to have no alternative future use. As of June 30, 2020, the warrant remains outstanding and expires on February 9, 2022.

13.Stockholders’ Equity

Authorized and Outstanding Capital Stock

On June 5, 2020, the Company filed a Certificate of Amendment to its Ninth Amended and Restated Certificate of Incorporation, or its Charter, to increase the number of authorized shares of common stock from 175,000,000 to 350,000,000. As of June 30, 2020, the authorized capital stock of the Company included 350,000,000 shares of common stock, par value $0.00001 per share, of which 143,129,409 and 121,674,568 shares were issued and outstanding at June 30, 2020 and December 31, 2019, respectively; and 25,000,000 shares of undesignated preferred stock, par value $0.00001 per share, of which no shares were issued and outstanding at June 30, 2020 and December 31, 2019.

At-the-Market Facility

On November 12, 2019, the Company entered into an Amended and Restated Controlled Equity Offering^SM Sales Agreement with Cantor Fitzgerald & Co. for the offer and sale of common stock at the then current market prices in amounts to be determined from time to time. Also, on November 12, 2019, the Company filed a prospectus supplement pursuant to which it was able to offer and sell up to $75.0 million its common stock at the then current market prices from time to time. In December 2019, the Company commenced sales under this program. Through December 31, 2019, the Company sold 2,684,392 shares of common stock under this program with net proceeds (after deducting commissions and other offering expenses) of $16.8 million. During the three months ended March 31, 2020, the Company sold 7,973,967 shares of common stock under this program with net proceeds (after deducting commissions and other offering expenses) of $56.7 million. On March 12, 2020, the Company filed an additional prospectus supplement, pursuant to which it is able to offer and sell up to $65.0 million in its common stock at current market prices from time to time. During the three and six months ended June 30,

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2020 and through the date of this Quarterly Report on Form 10-Q, the Company did not sell any shares of common stock pursuant to the March 12, 2020 prospectus supplement.

Equity Offering

On May 14, 2020, the Company sold 11,000,000 shares of its common stock in a public offering at a price to the public of $12.00 per share. The aggregate net proceeds received by the Company from the offering were $123.8 million, net of underwriting discounts and commissions and offering expenses payable by the Company. Additionally, on May 19, 2020, the underwriters exercised their option to purchase an additional 1,650,000 shares of the Company's common stock at the public offering price of $12.00 per share. The aggregate net proceeds received by the Company from the underwriters' exercise of their option were $18.6 million, net of underwriting discounts and commissions and offering expenses payable by the Company. The total aggregate net proceeds received by the Company from the public offering, including the underwriters' exercise of their option, were $142.4 million.

Equity Plans

On February 28, 2014, the Company’s Board of Directors adopted its 2014 Incentive Plan and its 2014 Employee Stock Purchase Plan, or the 2014 ESPP, which were subsequently approved by its shareholders and became effective upon the closing of the Company’s initial public offering on March 25, 2014. The Company’s 2014 Incentive Plan was subsequently amended on December 11, 2018, which amendment did not require shareholder approval. The Company’s 2014 Incentive Plan, as amended, is referred to as the 2014 Plan. The 2014 Plan replaced the Company’s Amended and Restated 2008 Equity Incentive Plan, or the 2008 Plan; however, options or other awards granted under the 2008 Plan prior to the adoption of the 2014 Plan that have not been settled or forfeited remain outstanding and effective. On June 6, 2019, the Company’s shareholders approved the Amended and Restated 2014 Employee Stock Purchase Plan, or the ESPP. In May 2016, the Company’s Board of Directors approved an inducement award program that was separate from the Company’s equity plans and which, consistent with Nasdaq Listing Rule 5635(c)(4), did not require shareholder approval, or the Inducement Award Program. During the six months ended June 30, 2020, the Company granted 786,750 options to purchase shares of the Company’s common stock to new hires under the Inducement Award Program, of which all 786,750 options to purchase Akebia Shares remained outstanding at June 30, 2020.

The 2014 Plan allows for the granting of stock options, stock appreciation rights, or SARs, restricted stock, unrestricted stock, RSUs, performance awards and other awards convertible into or otherwise based on shares of the Company’s common stock. Dividend equivalents may also be provided in connection with an award under the 2014 Plan. The Company’s employees, officers, directors and consultants and advisors are eligible to receive awards under the 2014 Plan. The Company initially reserved 1,785,000 shares of its common stock for the issuance of awards under the 2014 Plan. The 2014 Plan provides that the number of shares reserved and available for issuance under the 2014 Plan will automatically increase annually on January 1 of each calendar year, by an amount equal to three percent (3%) of the number of Akebia Shares outstanding on a fully diluted basis as of the close of business on the immediately preceding December 31, or the 2014 Plan Evergreen Provision. The Company’s Board of Directors may act prior to January 1 of any year to provide that there will be no automatic increase in the number of Akebia Shares available for grant under the 2014 Plan for that year (or that the increase will be less than the amount that would otherwise have automatically been made). On December 12, 2018, in connection with the consummation of the Merger, the Company assumed outstanding and unexercised options to purchase Keryx Shares, as adjusted by the Exchange Multiplier pursuant to the terms of the Merger Agreement, under the following Keryx equity plans, or the Keryx Equity Plans: the Keryx 1999 Share Option Plan, the Keryx 2004 Long-Term Incentive Plan, the Keryx 2007 Incentive Plan, the Keryx Amended and Restated 2013 Incentive Plan, and the Keryx 2018 Equity Incentive Plan, or the Keryx 2018 Plan. In addition, the number of Keryx Shares available for issuance under the Keryx 2018 Plan, as adjusted by the Exchange Multiplier pursuant to the terms of the Merger Agreement, may be used for awards granted by the Company under its 2014 Plan, or the Assumed Shares, provided that the Company uses the Assumed Shares for individuals who were not employees or directors of the Company prior to the consummation of the Merger. During the six months ended June 30, 2020, the Company granted 1,714,800 options to purchase Akebia Shares to employees under the 2014 Plan, 786,750 options to purchase Akebia Shares to employees under the Inducement Award Program, 2,367,500 Akebia RSUs to employees under the 2014 Plan, 479,000 Akebia PSUs to employees under the 2014 plan, 220,900 options to purchase Akebia Shares to directors under the 2014 Plan, and 95,900 Akebia RSUs to directors under the 2014 Plan.

The ESPP provides for the issuance of options to purchase shares of the Company’s common stock to participating employees at a discount to their fair market value. As noted above, the Company’s stockholders approved the ESPP, which amended and restated the Company’s 2014 ESPP, on June 6, 2019. The maximum aggregate number of shares at June 30, 2020 of the Company’s common stock available for future issuance under the ESPP is 5,600,968. Under the ESPP, each offering period is six months, at the end of which employees may purchase shares of the Company’s common stock through payroll deductions

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made over the term of the offering. The per-share purchase price at the end of each offering period is equal to the lesser of eighty-five percent (85%) of the closing price of the Company’s common stock at the beginning or end of the offering period. 

Shares Reserved for Future Issuance

The Company has reserved for future issuance the following number of shares of common stock:

	June 30, 2020	December 31, 2019
Common stock options and RSUs outstanding (1)	16,032,074	12,195,031
Shares available for issuance under Akebia equity    plans (2)	2,784,253	2,983,256
Warrant to purchase common stock	509,611	509,611
Shares available for issuance under the ESPP (3)	5,600,968	5,715,992
Total	24,926,906	21,403,890

(1)Includes awards granted under the 2014 Plan and the Inducement Award Program and awards issued in connection with the Merger.

(2)On January 1, 2020, January 1, 2019 and January 1, 2018, the shares reserved for future grants under the 2014 Plan increased by 4,031,376, 3,801,198 and 1,575,329 shares, respectively, pursuant to the 2014 Plan Evergreen Provision. On December 12, 2018, the shares reserved for future grants under the 2014 Plan increased by 2,323,213 shares as a result of the Company’s addition of the Assumed Shares to the 2014 Plan. On January 30, 2019, the Company’s Board of Directors approved 3,150,000 shares for issuance as option awards in fiscal year 2019 under the Inducement Award Program.

(3)On June 6, 2019, the shares reserved for future issuance under the ESPP increased by 5,200,000 shares upon shareholder approval of the Amended and Restated 2014 Employee Stock Purchase Plan. On February 28, 2018 and February 28, 2017, the shares reserved for future issuance under the 2014 ESPP remained unchanged. There were no increases in the shares reserved for future issuance pursuant to the evergreen provision under the ESPP in 2017 and 2018 as the maximum aggregate number of shares available for purchase under the 2014 ESPP had reached its cap of 739,611 on February 28, 2016.

Stock-Based Compensation

Stock Options

Service-Based Stock Options

On February 28, 2020, as part of the Company’s annual grant of equity, the Company issued 1,714,800 stock options to employees. In addition, the Company issues stock options to directors, new hires and occasionally to other employees not in connection with the annual grant process. Options granted by the Company vest over periods of between 12 and 48 months, subject, in each case, to the individual’s continued service through the applicable vesting date. Options vest either 100% on the first anniversary of the grant date or in installments of (i) 25% at the one year anniversary and (ii) 12 equal quarterly installments beginning after the one year anniversary of the grant date, subject to the individual’s continuous service with the Company. Options generally expire ten years after the date of grant. The Company recorded approximately $2.4 million and $1.1 million of stock-based compensation expense related to stock options during the three months ended June 30, 2020 and 2019, respectively, and approximately $4.0 million and $2.2 million during the six months ended June 30, 2020 and 2019, respectively.

Performance-Based Stock Options

On December 12, 2018, pursuant to the Merger Agreement, each outstanding and unexercised performance-based option to acquire Keryx Shares granted under a Keryx equity plan converted into a service-based option or performance-based option to acquire Akebia Shares, with the number of shares and exercise price adjusted by the Exchange Multiplier. As a result, the Company issued 233,954 performance-based options related to the Merger. The Company did not have any performance-based options outstanding in fiscal year 2018 prior to the Merger. The Company did not issue any performance-based options during the six months ended June 30, 2020 and 2019. As of June 30, 2020, the Company had no performance-based options outstanding compared to 46,790 performance-based options outstanding at December 31, 2019. The potential range of shares issuable pursuant to the Company’s performance-based options range from 0% to 100% of the target shares based on financial

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measures. Performance-based options vest up to 50% upon achievement of performance condition and up to 50% one year following achievement of the performance condition.

Restricted Stock Units

Service-Based Restricted Stock Units

On February 28, 2020, as part of the Company’s annual grant of equity, the Company issued 2,268,000 restricted stock units, or RSUs, to employees. In addition, the Company occasionally issues RSUs not in connection with the annual grant process to employees. Generally, RSUs granted by the Company vest in one of the following ways: (i) 100% of each RSU grant vests on either the first or the third anniversary of the grant date, (ii) one third of each RSU grant vests on the first, second and third anniversaries of the grant date, subject, in each case, to the individual’s continued service through the applicable vesting date, or (iii) 50% of each RSU grant vests on the first anniversary and 25% of each RSU grant vests in 6 months increment after the one year anniversary of the grant date. The expense recognized for these awards is based on the grant date fair value of the Company’s common stock multiplied by the number of units granted and recognized on a straight-line basis over the vesting period. The Company recorded approximately $4.2 million and $1.2 million of stock-based compensation expense related to employee RSUs during the three months ended June 30, 2020 and 2019, respectively, and approximately $7.2 million and $2.1 million during the six months ended June 30, 2020 and 2019, respectively.

Performance-Based Restricted Stock Units

On February 28, 2020, as part of the Company’s annual grant of equity, the Company issued 479,000 performance-based restricted stock units, or PSUs, to the Company’s executives. The PSUs granted by the Company vest in connection with the achievement of specified commercial and regulatory milestones. The PSUs also feature a time-based vesting component. The expense recognized for these awards is based on the grant date fair value of the Company’s common stock multiplied by the number of units granted and recognized over time based on the probability of meeting such commercial and regulatory milestones. The Company recorded approximately $0.2 million and $0 of stock-based compensation expense related to employee PSUs during the three months ended June 30, 2020 and 2019, respectively, and approximately $0.3 million and $0 during the six months ended June 30, 2020 and 2019, respectively.

Employee Stock Purchase Plan

The first offering period under the ESPP opened on January 2, 2015. The Company issued 115,024 shares during the six months ended June 30, 2020. The Company recorded approximately $0.2 million and $43,000 of stock-based compensation expense related to the ESPP during the three months ended June 30, 2020 and 2019, respectively, and approximately $0.3 million and $0.1 million during the six months ended June 30, 2020 and 2019, respectively.

Compensation Expense Summary

The Company has classified its stock-based compensation expense related to share-based awards as follows:

	Three Months Ended				Six Months Ended
	June 30, 2020		June 30, 2019		June 30, 2020		June 30, 2019
	(in thousands)				(in thousands)
Research and development	$	1,716	$	684	$	3,258	$	1,562
Selling, general and administrative	5,148		1,600		8,522		2,816
Total	$	6,864	$	2,284	$	11,780	$	4,378

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Compensation expense by type of award:

	Three Months Ended				Six Months Ended
	June 30, 2020		June 30, 2019		June 30, 2020		June 30, 2019
	(in thousands)				(in thousands)
Stock options	$	2,366	$	1,073	$	3,983	$	2,185
Restricted stock units	4,344		1,168		7,486		2,102
Employee stock purchase plan	154		43		311		91
Total	$	6,864	$	2,284	$	11,780	$	4,378

14.Commitments and Contingencies

Leases

The Company leases approximately 65,167 square feet of office and lab space in Cambridge, Massachusetts under a lease which was most recently amended in April 2018, collectively the Cambridge Lease. Under the Third Amendment to the Cambridge Lease, or the Third Amendment, executed in July 2016, total monthly lease payments under the initial base rent were approximately $242,000 and are subject to annual rent escalations. In addition to such annual rent escalations, base rent payments for a portion of said premises commenced on January 1, 2017 in the monthly amount of approximately $22,000. The Fourth Amendment to the Cambridge Lease, executed in May 2017, provided additional storage space to the Company and did not impact rent payments. In April 2018, the Company entered into a Fifth Amendment to the Cambridge Lease, or the Fifth Amendment, for an additional 19,805 square feet of office space on the 12th floor. Monthly lease payments for the existing 45,362 square feet of office and lab space, under the Third Amendment, remain unchanged. The new space leased by the Company was delivered in September 2018 and additional monthly lease payments of approximately $135,000 commenced in February 2019 and are subject to annual rent escalations, which commenced in September 2019.

Additionally, as a result of the Merger, the Company now has a lease for 27,300 square feet of office space in Boston, Massachusetts, or the Boston Lease, which expires in February 2023. The total monthly lease payments under the base rent are approximately $136,000 and are subject to annual rent escalations.

The term of the Cambridge Lease with respect to the office space expires on September 11, 2026, with one five-year extension option available. The term of the Cambridge Lease with respect to the lab space expires on November 30, 2021, with an extension option for one additional period of two years. The term of the Boston Lease office space expires on February 28, 2023, with an extension option for one additional five-year extension option available. The renewal options in the Company’s real estate leases were not included in the calculation of the operating lease assets and operating lease liabilities as the renewal is not reasonably certain. The lease agreements do not contain residual value guarantees. Operating lease costs were $1.6 million for each of the three months ended June 30, 2020 and 2019 and $3.3 million for each of the six months ended June 30, 2020 and 2019. Cash paid for amounts included in the measurement of operating lease liabilities was $1.8 million and $1.7 million for the three months ended June 30, 2020 and 2019, respectively, and $3.5 million and $3.4 million for the six months ended June 30, 2020 and 2019, respectively.

In September 2019, Keryx entered into an agreement to sublease the Boston office space to Foundation Medicine, Inc., or Foundation. The sublease is subject and subordinate to the Boston Lease between Keryx and the landlord. The term of the sublease commenced on October 16, 2019, upon receipt of the required consent from the landlord for the sublease agreement, and expires on February 28, 2023. Foundation is obligated to pay Keryx rent that approximates the rent due from Keryx to its landlord with respect to the Boston Lease. Sublease rental income is recorded to other income. Keryx continues to be obligated for all payment terms pursuant to the Boston Lease, and the Company will guaranty Keryx’s obligations under the sublease. Keryx recorded $0.5 million and $0.9 million in sublease rental income from Foundation during the three and six months ended June 30, 2020, respectively.

The Company has not entered into any material short-term leases or financing leases as of June 30, 2020.

The total security deposit in connection with the Cambridge Lease is $1.6 million as of June 30, 2020. Additionally, the Company recorded $0.8 million for the security deposit under the Boston Lease. Both the Cambridge Lease and the Boston Lease have their security deposits in the form of a letter of credit, all of which are included in prepaid expenses and other current assets in the Company’s unaudited condensed consolidated balance sheets as of June 30, 2020.

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As of June 30, 2020, undiscounted minimum rental commitments under non-cancelable leases, for each of the next five years and total thereafter are as follows:

	Operating Leases		Lease Payments to be Received from Sublease		Net Operating Lease Payments
	(in thousands)
Remaining 2020	$	3,068	$	888	$	2,180
2021	7,064		1,797		5,267
2022	6,735		1,824		4,911
2023	5,347		307		5,040
2024	5,116		—		5,116
Thereafter	8,818		—		8,818
Total	$	36,148	$	4,816	$	31,332

In arriving at the operating lease liabilities, the Company applied incremental borrowing rates ranging from 5.91% to 6.94%, which were based on the remaining lease term at the date of adoption of ASC 842, which was January 1, 2019. As of June 30, 2020, the remaining lease terms ranged from 1.42 years to 6.20 years. As of June 30, 2020, the following represents the difference between the remaining undiscounted minimum rental commitments under non-cancelable leases and the operating lease liabilities:

	Operating Leases
	(in thousands) Total
Undiscounted minimum rental commitments	$	36,148
Present value adjustment using incremental borrowing rate	(6,079)
Operating lease liabilities	$	30,069

Manufacturing Agreements

As part of the Merger, the Company retained Keryx’s commercial supply agreements with BioVectra and Siegfried Evionnaz SA, or Siegfried, to supply commercial drug substance for Auryxia.

Pursuant to the Manufacture and Supply Agreement with BioVectra and the Product Manufacture and Supply and Facility Construction Agreement with BioVectra, collectively the BioVectra Agreement, the Company has agreed to purchase a minimum quantity of drug substance of Auryxia at predetermined prices. The price per kilogram will decrease with an increase in quantity above the minimum purchase quantity. In addition, the BioVectra Agreement contained contingent milestone payments for capital developments in connection with construction of an expansion of the site of the BioVectra production facility for the manufacture of drug substance for Auryxia. These milestone payments were achieved by BioVectra and fully recorded prior to the Merger. These milestone payments are recorded in other assets and amortized into drug substance as inventory is released to the Company. The term of the BioVectra Agreement expires in late 2026, after which, it automatically renews for specified terms until terminated. The Company may terminate the BioVectra Agreement prior to the expiration of the contract term, which could result in early termination fee. As of June 30, 2020, the Company is required to purchase a minimum quantity of drug substance for Auryxia annually at a total cost of approximately $127.0 million through the end of the contract term.

As part of purchase accounting, the Company identified an executory contract in the BioVectra Agreement, which includes future firm purchase commitments. This executory contract was deemed to have an off-market element related to the amount of purchase commitments that exceed the current forecast. As a result, the Company recorded a liability of $29.5 million in purchase accounting as of the acquisition date for the fair value of the off-market element. In the second quarter of 2020, in connection with the reduced short-term and long-term Auryxia revenue forecast discussed in Note 9, the Company increased its liability for excess purchase commitments by $11.0 million for a total liability of $41.5 million and recorded a corresponding charge to cost of goods sold. Additionally, through June 30, 2020, the Company recorded $1.0 million in accretion expense related to the present value discount associated with this liability.

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Pursuant to the Siegfried Master Manufacturing Services and Supply Agreement, or the Siegfried Agreement, the Company has agreed to purchase a minimum quantity of drug substance of Auryxia at predetermined prices. The price per kilogram will decrease with an increase in quantity above the minimum purchase quantity. The term of the Siegfried Agreement expires on December 31, 2021, after which, it automatically renews for one year terms until terminated. The Siegfried Agreement provides for certain termination rights prior to December 31, 2021 for the Company. As of June 30, 2020, the Company is required to purchase a minimum quantity of drug substance for Auryxia annually at a total cost of approximately $51.8 million through the year ending December 31, 2021.

On April 9, 2019, the Company entered into a Supply Agreement with Esteve Química, S.A., or Esteve, or the Esteve Agreement. The Esteve Agreement includes the terms and conditions under which Esteve will manufacture vadadustat drug substance, or API, for commercial use. Pursuant to the Esteve Agreement, the Company provides rolling forecasts to Esteve on a quarterly basis, or the Esteve Forecast. The Esteve Forecast reflects the Company’s needs for API produced by Esteve over a certain number of months, represented as a quantity of API per calendar quarter. The parties have agreed to a volume-based pricing structure under the Esteve Agreement. The Esteve Agreement has an initial term of four years, beginning April 9, 2019 and ending April 9, 2023. As of June 30, 2020, the Company had a minimum commitment with Esteve for $13.6 million through the second quarter of 2021. Subsequent to June 30, 2020, the minimum commitment with Esteve increased to $23.9 million through the third quarter of 2021.

On March 11, 2020, the Company entered into a Supply Agreement with Patheon Inc., or Patheon, or the Patheon Agreement. The Patheon Agreement includes the terms and conditions under which Patheon will manufacture vadadustat drug product for commercial use. Pursuant to the Patheon Agreement, the Company provides Patheon a long-term forecast on an annual basis, as well as short-term forecasts on a quarterly basis, or the Patheon Forecast. The Patheon Forecast reflects the Company’s needs for commercial supply of vadadustat drug product produced by Patheon, represented as a quantity of drug product per calendar quarter. The parties have agreed to a volume-based pricing structure under the Patheon Agreement. The Patheon Agreement has an initial term beginning March 11, 2020 and ending June 30, 2023. As of June 30, 2020, the Company had a minimum commitment with Patheon for $0.4 million through the fourth quarter of 2020. Subsequent to June 30, 2020, the minimum commitment with Patheon increased to $1.3 million through the third quarter of 2021.

On April 2, 2020, the Company entered into a Supply Agreement with STA Pharmaceutical Hong Kong Limited, a subsidiary of WuXi AppTec, or WuXi STA, or the WuXi STA Agreement. The WuXi STA Agreement includes the terms and conditions under which WuXi STA will manufacture vadadustat API for commercial use. Pursuant to the WuXi STA Agreement, the Company provides rolling forecasts to WuXi STA on a quarterly basis, or the WuXi STA Forecast. The WuXi STA Forecast reflects the Company’s needs for API produced by WuXi STA over a certain number of months, represented as a quantity of API per calendar quarter. The parties have agreed to a volume-based pricing structure under the WuXi STA Agreement. The WuXi STA Agreement has an initial term of four years, beginning April 2, 2020 and ending April 2, 2024. There were no minimum commitments under the WuXi STA Agreement as of June 30, 2020. Subsequent to June 30, 2020, the Company has a minimum commitment with WuXi STA for $44.7 million through the fourth quarter of 2021.

Other Third Party Contracts

Under the Company’s agreement with IQVIA to provide contract research organization services for the PRO₂TECT and INNO₂VATE programs, the total remaining contract costs as of June 30, 2020 were approximately $23.2 million, of which Otsuka reimburses a significant portion back to the Company. The estimated period of substantive performance for the committed work with IQVIA is through the end of 2020. The Company also contracts with various other organizations to conduct research and development activities with remaining contract costs to the Company of approximately $68.1 million at June 30, 2020. The scope of the services under these research and development contracts can be modified and the contracts cancelled by the Company upon written notice. In some instances, the contracts may be cancelled by the third party upon written notice.

Litigation and Related Matters

From time to time, the Company may become subject to legal proceedings and claims which arise in the ordinary course of its business. Consistent with ASC 450, Contingencies, the Company’s policy is to record a liability if a loss in a significant legal dispute is considered probable and an amount can be reasonably estimated. The Company provides disclosure when a loss in excess of any reserve is reasonably possible, and if estimable, the Company discloses the potential loss or range of possible loss. Significant judgment is required to assess the likelihood of various potential outcomes and the quantification of loss in those scenarios. The Company’s estimates change as litigation progresses and new information comes to light. Changes in Company estimates could have a material impact on the Company’s results and financial position. As of June 30, 2020, the Company does not have any significant legal disputes that require a loss liability to be recorded. The Company continually monitors the need for a loss liability for litigation and related matters.

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15.Net Loss per Share

The shares in the table below were excluded from the calculation of diluted net loss per share, prior to the use of the treasury stock method, due to their anti-dilutive effect:

	As of June 30,
	2020	2019
Warrant	509,611	509,611
Outstanding stock options	9,632,240	7,779,744
Unvested restricted stock units	6,399,834	1,937,822
Total	16,541,685	10,227,177

16. Subsequent Events

On July 15, 2020, the Company and its collaboration partner MTPC entered into a supply agreement, or the MTPC Supply Agreement. The MTPC Supply Agreement includes the terms and conditions under which the Company will supply vadadustat drug product to MTPC for commercial use in Japan and certain other Asian countries, as contemplated by the MTPC Agreement, which is further described in Note 4 (License, Collaboration and Other Significant Agreements).

Pursuant to the MTPC Supply Agreement, MTPC will provide a rolling forecast, or the MTPC Forecast, to the Company on a quarterly basis. The MTPC Forecast will reflect MTPC’s needs for vadadustat drug product over a certain number of months, represented as a quantity of vadadustat drug product per calendar quarter. MTPC will make an up-front payment for a certain percentage of each batch of vadadustat drug product ordered.

The term of the MTPC Supply Agreement will exist throughout the term of the MTPC Agreement, and the termination provisions of the MTPC Agreement govern termination of the MTPC Supply Agreement. The MTPC Supply Agreement includes customary indemnification, intellectual property protection, confidentiality, remedies, and warranty terms, as well as certain quality requirements.

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following information should be read in conjunction with our unaudited condensed consolidated financial statements and the notes thereto included in this Quarterly Report on Form 10-Q and our Annual Report on Form 10-K for the year ended December 31, 2019 filed with the U.S. Securities and Exchange Commission on March 12, 2020, or the 2019 Annual Report on Form 10-K, including the audited consolidated financial statements and notes thereto contained in our 2019 Annual Report on Form 10-K. This discussion and analysis contains forward-looking statements that involve significant risks and uncertainties. As a result of many factors, such as those set forth under “Risk Factors” in Part II, Item 1A. of this Quarterly Report on Form 10-Q, our actual results may differ materially from those anticipated in these forward-looking statements.

Business Overview

We are a biopharmaceutical company with the purpose of bettering the lives of people living with kidney disease. Our portfolio includes a late-stage product candidate and a commercial product:

•Vadadustat is an oral hypoxia-inducible factor prolyl hydroxylase inhibitor, or HIF-PHI, in global Phase 3 development for two indications: (1) anemia due to chronic kidney disease, or CKD, in adult patients on dialysis, or DD-CKD, and (2) anemia due to CKD in adult patients not on dialysis, or NDD-CKD. We believe vadadustat has the potential to set a new oral standard of care for patients with anemia due to CKD, subject to regulatory approval. Vadadustat is designed to mimic the physiologic effect of altitude on oxygen availability. At higher altitudes, the body responds to lower oxygen availability with stabilization of hypoxia-inducible factor, or HIF, which can lead to red blood cell, or RBC, production and improved oxygen delivery to tissues. Vadadustat is not approved by the U.S. Food and Drug Administration (FDA) or any regulatory authority for use with the exception of Japan’s Ministry of Health, Labour and Welfare (MHLW). In Japan, vadadustat is approved as a treatment for anemia due to CKD in both DD-CKD and NDD-CKD adult patients, under the trade name VAFSEO.

•Auryxia® (ferric citrate) is approved and marketed in the United States for two indications: (1) the control of serum phosphorus levels in adult patients with DD-CKD, or the Hyperphosphatemia Indication, and (2) the treatment of iron deficiency anemia, or IDA, in adult patients with NDD-CKD, or the IDA Indication. Ferric

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citrate is also approved and marketed in Japan as an oral treatment for the improvement of hyperphosphatemia in patients with CKD, including DD-CKD and NDD-CKD, under the trade name Riona® (ferric citrate hydrate).

Vadadustat

In the second quarter of 2020, we announced positive top-line results from INNO₂VATE, the first of our two global Phase 3 cardiovascular outcomes programs. At that time, we also announced that we had significantly advanced PRO₂TECT, the second of our two global Phase 3 cardiovascular outcomes programs, and achieved the target number of major adverse cardiovascular events, or MACE, for the study. More recently, in August 2020, we announced database lock for PRO₂TECT and plans to report top-line data in early September 2020.

Top-line Results from Global Phase 3 INNO₂VATE Program

The two INNO₂VATE studies (Correction/Conversion and Conversion), which collectively enrolled 3,923 patients, evaluated the efficacy and safety of vadadustat versus darbepoetin alfa for the treatment of anemia due to CKD in adult patients on dialysis.

Vadadustat achieved the primary and key secondary efficacy endpoint in each of the two INNO₂VATE studies, demonstrating non-inferiority to darbepoetin alfa as measured by a mean change in hemoglobin, or Hb, between baseline and the primary evaluation period (weeks 24 to 36) and secondary evaluation period (weeks 40 to 52). Vadadustat also achieved the primary safety endpoint of the INNO₂VATE program, defined as non-inferiority of vadadustat versus darbepoetin alfa in time to first occurrence of MACE, which is the composite of all-cause mortality, non-fatal myocardial infarction, or non-fatal stroke across both INNO₂VATE studies. Each analysis was measured against non-inferiority, or NI, margins agreed upon with the U.S. Food and Drug Administration, or FDA, and the European Medicines Agency, or EMA.

Both INNO₂VATE studies are global, multicenter, open label (sponsor blinded), active-controlled (darbepoetin alfa - an injectable erythropoiesis stimulating agent, or ESA), non-inferiority studies.

Primary and Key Secondary Efficacy Endpoint Results

Vadadustat achieved each of the INNO₂VATE studies’ primary efficacy endpoints of mean change in Hb between baseline and the primary evaluation period (mean Hb from weeks 24 to 36) compared to darbepoetin alfa, in adult patients on dialysis, demonstrating non-inferiority to darbepoetin alfa based on using a non-inferiority margin of -0.75 g/dL prospectively agreed to with FDA and EMA.

In INNO₂VATE’s Correction/Conversion study of incident dialysis patients (n=369):

•Primary Efficacy Endpoint Result: Vadadustat was non-inferior to darbepoetin alfa. The least square mean difference in Hb was -0.31 g/dL (95% CI: -0.53, -0.10), achieving the pre-specified non-inferiority criterion of -0.75 g/dL. The mean (SD) Hb level at week 24 to week 36 was 10.36 (1.13) g/dL for vadadustat-treated patients compared to 10.61 (0.94) g/dL for darbepoetin alfa-treated patients.

•Key Secondary Efficacy Endpoint Result: Vadadustat sustained the target Hb efficacy response at weeks 40 to 52 achieving non-inferiority compared to darbepoetin alfa. The least square mean difference in Hb was -0.07 g/dL (95% CI: -0.34, 0.19). The mean (SD) Hb level at week 40 to week 52 was 10.51 (1.19) g/dL for vadadustat treated-patients compared to 10.55 (1.14) g/dL for darbepoetin alfa-treated patients.

In INNO₂VATE’s Conversion study of dialysis patients (n=3,554):

•Primary Efficacy Endpoint Result: Vadadustat was non-inferior to darbepoetin alfa. The least square mean difference in Hb was -0.17 g/dL (95% CI: -0.23, -0.10), achieving the pre-specified non-inferiority criterion of -0.75 g/dL. The mean (SD) Hb level at week 24 to week 36 was 10.36 (1.01) g/dL for vadadustat-treated patients compared to 10.53 (0.96) g/dL for darbepoetin alfa-treated patients.

•Key Secondary Efficacy Endpoint Result: Vadadustat sustained efficacy in the Conversion study demonstrating non-inferiority to darbepoetin with a least square mean difference in Hb of -0.18 g/dL (95% CI: -0.25, -0.12). The mean (SD) Hb level at week 40 to week 52 was 10.40 (1.04) g/dL in the vadadustat-treated patients compared to 10.58 (0.98) g/dL for darbepoetin treated patients.

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Primary Safety Major Adverse Cardiovascular Events (MACE) Endpoint Result

Vadadustat achieved the INNO₂VATE program’s primary safety endpoint of non-inferiority for MACE. In the primary analysis of time to first MACE event, vadadustat demonstrated non-inferiority to darbepoetin alfa using a non-inferiority margin of 1.25 prospectively agreed to by FDA and a non-inferiority margin of 1.3 prospectively agreed to by EMA.  

The INNO₂VATE program (Correction/Conversion and Conversion studies) of dialysis patients (n=3,902):

•Vadadustat was non-inferior to darbepoetin alfa. The upper bound of the 95% confidence interval (CI) of the Hazard Ratio (HR) was below the pre-specified non-inferiority margin of 1.25 for primary MACE analysis (HR 0.96, 95% CI: 0.83, 1.11.). MACE is defined as the composite endpoint of all-cause mortality, non-fatal myocardial infarction, or non-fatal stroke.

The incidence of treatment emergent adverse events during the Correction/Conversion study in vadadustat treated patients was 83.8% and 85.5 % in darbepoetin alfa treated patients. During the study, the most common treatment emergent adverse events reported in vadadustat/darbepoetin alfa treated patients were hypertension (16.2%/ 12.9%) and diarrhea (10.1%/ 9.7%). Serious treatment emergent adverse events were lower in vadadustat treated patients at 49.7% compared to 56.5% for darbepoetin alfa treated patients. The incidence of treatment emergent adverse events during the Conversion study in the vadadustat treated patients was 88.3%, and 89.3% in darbepoetin alfa treated patients. During the study, the most common treatment emergent adverse events reported in vadadustat/darbepoetin alfa treated patients were diarrhea (13.0%/ 10.1%), pneumonia (11.0%/ 9.7%), hypertension (10.6%/ 13.8%), and hyperkalemia (9.0%/ 10.8%). Serious treatment emergent adverse events were slightly lower for vadadustat treated patients at 55.0% and 58.3% for darbepoetin alfa-treated patients.

Regulatory and Commercialization Strategy

We plan to file for regulatory approval in the United States and other regions upon successful completion of the global Phase 3 studies for vadadustat, which includes the PRO₂TECT studies of vadadustat for the treatment of anemia due to CKD in NDD-CKD patients that we expect to read out in early September 2020, as previously disclosed. In connection with our plan to file for regulatory approval for vadadustat in the United States, we entered into a letter agreement on February 14, 2020, or the Letter Agreement, with Vifor (International) Ltd., or Vifor Pharma, relating to Vifor Pharma’s agreement with a third party to purchase a Priority Review Voucher, or the PRV, issued by the FDA subject to satisfaction of customary closing conditions, or the PRV Purchase. A PRV entitles the holder to priority review of a New Drug Application, or NDA, or a Biologics License Application, or BLA, for a new drug, which reduces the target FDA review time to six months after official acceptance of the submission, and could lead to expedited approval. Pursuant to the Letter Agreement, we paid Vifor Pharma $10.0 million in connection with the closing of the PRV Purchase. Vifor Pharma is obligated to retain all rights to, and maintain the validity of, the PRV until we and Vifor Pharma (a) enter into a definitive agreement setting forth the financial and other terms by which Vifor Pharma will assign the PRV to us for use with our planned NDA for vadadustat for the treatment of anemia due to CKD in both DD-CKD and NDD-CKD patients, or (b) make a mutual decision to sell the PRV and share the proceeds based on certain terms.

We plan to commercialize vadadustat, subject to FDA approval, in the United States with our existing nephrology-focused commercial organization, while also leveraging our collaboration with Otsuka Pharmaceutical Co. Ltd., or Otsuka, and its U.S. commercial organization. We also granted Otsuka exclusive rights to commercialize vadadustat in Europe, China and certain other markets, subject to marketing approvals. In Japan and certain other countries in Asia, we granted Mitsubishi Tanabe Pharma Corporation, or MTPC, exclusive rights to commercialize vadadustat, subject to marketing approvals. In addition, we granted Vifor Pharma an exclusive license to sell vadadustat solely to Fresenius Kidney Care Group LLC, or FKC, which manages approximately 40% of the dialysis patients in the United States, at its U.S. dialysis clinics, and to certain third party dialysis organizations in the United States, approved by us, or Third Party Dialysis Organizations, which account for up to an additional 20% of the dialysis market in the United States. The license granted to Vifor Pharma would be effective upon FDA approval of vadadustat in the DD-CKD indication, the earlier of a determination by the Centers for Medicare & Medicaid Services, or CMS, that vadadustat will be included in Medicare’s bundled reimbursement model or that vadadustat will be reimbursed using the Transitional Drug Add-On Payment Adjustment, or TDAPA, and a milestone payment by Vifor Pharma.

Japan Approval

In June 2020, we announced the first regulatory approval of vadadustat for the treatment of anemia due to CKD in DD-CKD and NDD-CKD patients in Japan. Vadadustat will be marketed by our collaboration partner, MTPC, in Japan under the trade name VAFSEO. The regulatory approval triggered a $15.0 million regulatory milestone payment from MTPC to Akebia.

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Study in COVID-19-Related Indication

In July 2020, we announced the initiation of an investigator-sponsored clinical study by The University of Texas Health Science Center at Houston, or UTHealth, in Houston, Texas, evaluating the use of vadadustat as a potential therapy to prevent and lessen the severity of acute respiratory distress syndrome, or ARDS, a complication of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), or COVID-19, infection. The randomized, double-blind, placebo-controlled study is intended to evaluate the safety and efficacy of vadadustat in up to 300 adult patients who have been hospitalized due to COVID-19. Patients will be dosed with vadadustat or a placebo starting within 24 hours of hospital admission and continuing for up to 14 days. This study is being conducted under an FDA Investigational New Drug application with UTHealth as the study sponsor.

Auryxia

We market Auryxia in the United States with our well-established, nephrology-focused commercial organization. Our Japanese sublicensee, Japan Tobacco, Inc., or JT, and its subsidiary, Torii Pharmaceutical Co., Ltd., or Torii, commercialize Riona in Japan.

Auryxia is our only product approved for sale in the United States and it generated approximately $30.7 million and $29.1 million in revenue from U.S. product sales during the three months ended June 30, 2020 and 2019, respectively, and approximately $59.9 million and $52.2 million during the six months ended June 30, 2020 and 2019, respectively. We have funded our operations primarily through equity offerings, strategic collaborations, product revenues and debt. 

Operating Overview

We have never been profitable and have incurred net losses in each year since inception. Our net losses were $175.8 million and $58.2 million for the three months ended June 30, 2020 and 2019, respectively, and $236.5 million and $130.6 million for the six months ended June 30, 2020 and 2019, respectively. Substantially all of our net losses resulted from costs incurred in connection with our development efforts relating to vadadustat, including preparing for and conducting clinical studies of vadadustat, providing general and administrative support for these operations and protecting our intellectual property.

We expect to continue to incur significant expenses and operating losses for the foreseeable future. The amount of our future net losses will depend, in part, on the rate of our future expenditures, and our financial position will depend, in part, on revenue from commercial products, and our ability to obtain additional funding. We expect to continue to incur significant expenses if and as we:

•conduct our development program of vadadustat for the treatment of anemia due to CKD, including PRO₂TECT and other ongoing or planned studies with respect to vadadustat, and develop plans for and conduct the preclinical and clinical development of any other potential product candidates;

•continue our commercialization activities for Auryxia and plan for the commercialization of vadadustat, if approved, and any other product or product candidate, including those that may be in-licensed or acquired;

•continue our integration activities as a result of our merger, or the Merger, with Keryx Biopharmaceuticals, Inc., or Keryx;

•seek marketing approvals for our product candidates that successfully complete clinical studies, and maintain marketing approvals for Auryxia and any product candidate for which we obtain marketing approval, including complying with any post-marketing regulatory requirements;

•have our product candidates manufactured for clinical trials and for commercial sale;

•initiate any post-marketing approval studies, Phase 4 studies or any other clinical trials for Auryxia or any other product, including those that may be in-licensed or acquired;

•seek to discover additional product candidates;

•engage in transactions, including strategic, merger, collaboration, acquisition and licensing transactions, pursuant to which we would market and develop commercial products, or develop and commercialize other product candidates and technologies;

•make royalty, milestone or other payments under our license agreements and any future license agreements;

•maintain, protect and expand our intellectual property portfolio;

•attract and retain skilled personnel;

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•continue to create additional infrastructure and expend additional resources to support our operations as a public company, including any additional infrastructure and resources necessary to support the transition from our prior status as an emerging growth company; and

•experience any delays or encounter issues with any of the above.

We have not generated, and may not generate, enough product revenue to realize net profits from product sales. We have no manufacturing facilities, and all of our manufacturing activities are contracted out to third parties. Additionally, we currently utilize contract research organizations, or CROs, to carry out our clinical development activities. If we obtain marketing approval for any of our product candidates, and as we continue to commercialize Auryxia, we expect to incur significant commercialization expenses related to product sales, marketing, manufacturing and distribution. We expect to finance future cash needs through product revenue, public or private equity or debt transactions, payments from our collaborators, royalty transactions, strategic transactions, or a combination of these approaches. If we are unable to raise additional capital in sufficient amounts when needed or on attractive terms, we may not be able to pursue development and commercial activities related to expanded indications for current products and any additional products and product candidates. Any of these events could significantly harm our business, financial condition and prospects.

From inception through June 30, 2020, we raised approximately $693.7 million of net proceeds from the sale of equity including $519.8 million from various underwritten public offerings, $123.9 million from at-the-market offerings, or ATM offerings, pursuant to sales agreements with Cantor Fitzgerald & Co., and $50.0 million from the sale of 3,571,429 shares of common stock to Vifor Pharma. During the quarter ended June 30, 2020, we completed an underwritten public offering of our common stock with aggregate net proceeds of $142.4 million. During the quarter ended March 31, 2020, we raised $56.7 million of net proceeds from ATM offerings. In addition, on November 11, 2019, we entered into a loan agreement, or the Loan Agreement, with funds managed by Pharmakon Advisors LP, or Pharmakon, pursuant to which term loans in an aggregate principal amount of $100.0 million were made available to us in two tranches, subject to certain terms and conditions, or the Term Loans. On November 25, 2019, we drew down the first tranche of $80.0 million from the Term Loans and received net proceeds of $77.3 million. At inception of our collaboration agreements with Otsuka and MTPC, our collaborators committed to an aggregate of approximately $573.0 million or more in cost-share funding, which we generally continue to receive on a quarterly prepaid basis, and license payments. Of these commitments, we received approximately $272.0 million at the onset of the collaboration agreements.

Impacts of COVID-19 Pandemic

The ongoing severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), or COVID-19, pandemic has presented a substantial public health and economic challenge around the world and continues to affect our employees, patients, customers, collaboration partners, vendors, communities and business operations. The full extent to which the COVID-19 pandemic will directly or indirectly impact our business, results of operations and financial condition continues to depend on future developments that are highly uncertain and cannot be accurately predicted, including new information that may emerge concerning COVID-19, any resurgence of COVID-19, the actions taken to contain it or treat its impact and the economic impact on local, regional, national and international markets where the healthcare providers with whom we interact, our partners, our CROs, our contract manufacturing organizations, or CMOs, and our other vendors operate. During the second quarter of 2020, certain states, countries, and businesses had begun to ease restrictions that were in place earlier. Recently, however, viral infections have begun to increase again, resulting in the resumption of restrictions. As a result, there remains uncertainty concerning the impact and duration of the COVID-19 pandemic.

To date, we have not experienced any significant adverse impact from COVID-19 on our financial and operational performance and our fundamentals have remained strong. We believe our innovative therapies are critical to dialysis and non-dialysis CKD patients, who are among the most at risk during this pandemic. Continuing to provide and support our therapies is a priority. However, we are continuing to monitor and assess the potential impact of the COVID-19 pandemic on our business and operations, including our sales, supply chain, manufacturing, and clinical trials. We are also mindful of the potential macro-level risks from the impact on the healthcare system to us, our patients, our customers, healthcare providers, our collaboration partners, and our vendors, as well as the potential impact on payer mix.

The majority of our office-based employees have been working from home since March 13, 2020 and are not expected to return to the office before the end of 2020. In addition, consistent with Centers for Disease Control and Prevention guidance and in accordance with evolving COVID-19 safety restrictions imposed by many of our customers, we suspended in-person interactions by our customer-facing personnel with healthcare providers, including dialysis centers and hospitals. Although we began permitting in-person interactions in the second quarter of 2020 where appropriate and permissible, healthcare facilities have continued, or begun again, to restrict access for non-patients, including the members of our sales force. For example, DaVita, Inc., or DaVita, and Fresenius Medical Care, or Fresenius, which account for a vast majority of the dialysis population

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in the United States, have restricted access to their clinics. As a result, we continue to primarily engage with healthcare providers and other customers virtually, where possible. Given this uncertain environment and the lack of clear visibility, we are actively monitoring the demand for our marketed therapy, including the potential for material declines or changes in prescription trends and in customer orders.

At this time, our third party contract manufacturing partners continue to operate at or near normal levels. While we currently do not anticipate any interruptions in our manufacturing process due to COVID-19, we believe that we have inventory to help mitigate the impact should they occur. However, it is possible that the COVID-19 pandemic and response efforts may have an impact in the future on our contract manufacturing partners' ability to manufacture our marketed product or to have our marketed product reach our markets, which would also impact our inventory reserves.

In terms of our clinical trials, our PRO₂TECT studies for vadadustat have advanced significantly and as previously disclosed, we expect to announce top-line data in early September. Our FO₂RWARD-2 trial for vadadustat is fully enrolled, and we continue to expect top-line data by year end. COVID-19 precautions are, however, causing a delay in enrolling new clinical trials. We are using remote monitoring and performing remote patient visits, where possible.  

This uncertain COVID-19 environment has presented new risks to our business. While we are working aggressively to mitigate impacts on our business, we are mindful that many of these risks and the impact to the larger healthcare market are outside our control.  

For additional information on the various risks posed by the COVID-19 pandemic, please refer to Part II, Item 1A. Risk Factors.

Financial Overview

Revenue

To date, our revenues have been derived from collaboration revenues, which include license and milestone payments and cost-sharing revenue, generated through collaboration and license agreements with partners for the development and commercialization of vadadustat and, following the Merger, commercial sales of Auryxia and royalty revenue from sales of Riona in Japan. Cost-sharing revenue represents amounts reimbursed by our collaboration partners for expenses incurred by us for research and development activities and, potentially, co-promotion activities, under our collaboration agreements.

We expect our revenue to continue to be generated primarily from our collaborations with Otsuka and MTPC and any other collaborations into which we may enter, as well as commercial sales of Auryxia in the United States, and royalty revenue from JT and Torii.

Cost of Goods Sold

Cost of goods sold includes direct costs to manufacture commercial drug substance and drug product for Auryxia, as well as indirect costs including costs for packaging, shipping, insurance and quality assurance, idle capacity charges, write-offs for inventory that fails to meet specifications or is otherwise no longer suitable for commercial sale, and royalties due to the licensor of Auryxia related to the U.S. product sales recognized during the period.

As a result of the Merger and the application of purchase accounting, costs of goods sold also includes both amortization expense and, if applicable, impairment charges associated with the fair value of the developed product rights for Auryxia as well as expense associated with the fair value inventory step-up. The fair value of the developed product rights for Auryxia is being amortized over its estimated useful life, which as of June 30, 2020 is estimated to be seven years. The fair value inventory step-up is expected to be incurred over approximately three years from the date of the Merger.

Research and Development Expenses

Research and development expenses consist primarily of costs incurred for the development of our product candidates, which include:

•personnel-related expenses, including salaries, benefits, recruiting fees, travel and stock-based compensation expense of our research and development personnel;

•expenses incurred under agreements with CROs and investigative sites that conduct our clinical studies;

•the cost of acquiring, developing and manufacturing clinical study materials through CMOs;

•facilities, depreciation and other expenses, which include direct and allocated expenses for rent and maintenance of facilities, insurance and other supplies; and

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•costs associated with preclinical, clinical and regulatory activities.

Research and development costs are expensed as incurred. Costs for certain development activities are recognized based on an evaluation of the progress to completion of specific tasks using information and data provided to us by our vendors and our clinical sites.

We cannot determine with certainty the duration and completion costs of current or future clinical studies of our product candidates or if, when, or to what extent we will generate revenue from the commercialization and sale of any of our product candidates that obtain marketing approval. We may never succeed in achieving marketing approval for any of our product candidates.

The duration, costs and timing of clinical studies and development of our product candidates will depend on a variety of factors including, but not limited to, those described in Part II, Item 1A. Risk Factors. A change in the outcome of any of these variables with respect to the development of a product candidate could mean a significant change in the costs and timing associated with the development of that product candidate. For example, if the FDA, the EMA, or other regulatory authorities were to require us to conduct clinical studies in addition to or different from those that we currently anticipate, or if we experience delays in any of our clinical studies, we could be required to expend significant additional financial resources and time on the completion of clinical development.

From inception through June 30, 2020, we have incurred $1.2 billion in research and development expenses. We expect to have significant research and development expenditures for the foreseeable future as we continue the development of vadadustat and any other product candidates.

Our direct research and development expenses consist principally of external costs, such as fees paid to clinical trial sites, consultants, central laboratories and CROs in connection with our clinical studies, and drug substance and drug product manufacturing for clinical studies.

We currently have four clinical trials for our global Phase 3 clinical program for vadadustat to which the majority of our research and development costs are attributable. A significant portion of our research and development costs have been external costs, which we track on a program-by-program basis. These external costs include fees paid to investigators, consultants, central laboratories and contract research organizations in connection with our clinical trials, and costs related to acquiring and manufacturing clinical trial materials. Our internal research and development costs are primarily personnel-related costs, depreciation and other indirect costs. We do not track our internal research and development expenses on a program-by-program basis as they are deployed across multiple projects under development.

The following table summarizes our external research and development expenses by program, as well as expenses not allocated to programs, for the three and six months ended June 30, 2020 and 2019:

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
	(in thousands)				(in thousands)
Vadadustat external costs	$	31,072	$	68,299	$	89,420	$	134,343
External costs for other programs	2,972		6,674		6,205		12,166
Total external research and development expenses	34,044		74,973		95,625		146,509
Headcount, consulting, facilities and other	18,775		10,721		38,425		21,536
Total research and development expenses	$	52,819	$	85,694	$	134,050	$	168,045

Selling, General and Administrative Expenses

Selling, general and administrative expenses consist primarily of salaries and related costs for personnel, including stock-based compensation and travel expenses for our commercial personnel, including our field sales force and other commercial support personnel, as well as personnel in executive and other administrative or non-research and development functions. Other selling, general and administrative expenses include facility-related costs, fees for directors, accounting and legal services fees, recruiting fees and expenses associated with obtaining and maintaining patents.

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Results of Operations

Comparison of the Three Months Ended June 30, 2020 and 2019

	Three Months Ended				Increase
	June 30, 2020		June 30, 2019		(Decrease)
	(In Thousands)
Revenues:
Product revenue, net	$	30,696	$	29,089	$	1,607
License, collaboration and other revenue	59,446		71,714		(12,268)
Total revenues	90,142		100,803		(10,661)
Cost of goods sold:
Product	49,988		28,569		21,419
Amortization of intangibles	9,101		9,100		1
Impairment of intangible asset	115,527		—		115,527
Total cost of goods sold	174,616		37,669		136,947
Operating expenses:
Research and development	52,819		85,694		(32,875)
Selling, general and administrative	35,482		36,068		(586)
License expense	1,044		895		149
Total operating expenses	89,345		122,657		(33,312)
Operating loss	(173,819)		(59,523)		(114,296)
Other income (expense), net	(1,932)		508		(2,440)
Net loss before income taxes	(175,751)		(59,015)		(116,736)
Benefit from income taxes	—		(845)		845
Net loss	$	(175,751)	$	(58,170)	$	(117,581)

Product Revenue, Net. Net product revenue is derived from sales of our only commercial product in the United States, Auryxia. We distribute our product principally through a limited number of wholesale distributors as well as certain specialty pharmacy providers. Net product revenue was $30.7 million for the three months ended June 30, 2020, compared to net product revenue of $29.1 million for the three months ended June 30, 2019. The increase was primarily due to an increase in units sold. We did not experience any significant impact from COVID-19 on net product revenue for the three months ended June 30, 2020; however, we have no clear visibility on how product demand and payer mix may be impacted in the upcoming weeks and months and therefore, it is not possible to predict whether our future net product revenue will be impacted as a result of COVID-19 going forward.

In September 2018, CMS decided that Auryxia would not be covered by Medicare for the IDA Indication. While this decision does not impact CMS coverage of the Hyperphosphatemia Indication, it requires all Auryxia prescriptions for Medicare patients to undergo a prior authorization to ensure their use in the Hyperphosphatemia Indication. On October 15, 2019, we filed a complaint in the United States District Court for the District of Massachusetts against CMS and the U.S. Department of Health and Human Services challenging CMS’s decision that Auryxia would no longer be covered by Medicare for the IDA Indication and CMS’s related decision that imposed the prior authorization requirement for Auryxia for the Hyperphosphatemia Indication, or the CMS Decisions. See Part II, Item 1. Legal Proceedings for further information. While we believe that the vast majority of the Medicare prescriptions written for Auryxia today are for the Hyperphosphatemia Indication and therefore will continue to be covered by Medicare with prior authorization, the CMS Decisions have had and will continue to have an adverse impact on the sales of Auryxia for the Hyperphosphatemia Indication and the IDA Indication, and ultimately on the timing and number of prescriptions and Auryxia product revenue. Even if the CMS Decisions are ultimately reversed, the negative impact that they have had on the growth of sales of Auryxia for the Hyperphosphatemia Indication and the IDA Indication will continue, although less significantly than if the CMS Decisions are not reversed.

License, Collaboration and Other Revenue. License, collaboration and other revenue was $59.4 million for the three months ended June 30, 2020 compared to $71.7 million for the three months ended June 30, 2019. We recognized $53.7 million in collaboration revenue for the three months ended June 30, 2020 from our cost sharing arrangement under the Otsuka collaboration agreement for the United States, or the Otsuka U.S. Agreement, and the Otsuka collaboration agreement for

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certain territories outside the United States, or the Otsuka International Agreement, and recognition of a milestone earned under our collaboration agreement with MTPC, or the MTPC Agreement. We recognized $70.0 million in collaboration revenue for the three months ended June 30, 2019 from our cost sharing arrangement under the Otsuka U.S. Agreement and the Otsuka International Agreement and recognition of a milestone under the MTPC Agreement. The decrease in revenue between the two periods was attributable to a decrease of $21.3 million of revenue recognized under both the Otsuka U.S. Agreement and Otsuka International Agreement. This decrease was partially offset by an additional $5.0 million of revenue recognized under the MTPC Agreement due to timing of milestone recognition and an additional $4.0 million of revenue recognized for the supply of validation drug product to MTPC during the second quarter of 2020. We expect our Otsuka collaboration revenue to decrease in the near term because our top-line data from our INNO₂VATE studies have been reported, and our PRO₂TECT studies are nearing completion.

Cost of Goods Sold - Product. Cost of goods sold of $50.0 million for the three months ended June 30, 2020 consists of costs associated with the manufacturing of Auryxia, $19.9 million in non-cash charges related to the fair-value inventory step-up from the application of purchase accounting, $11.0 million in non-cash charges related to an increase to the liability for excess purchase commitments and $9.9 million primarily related to the write-down of inventory associated with specific lots of Auryxia because it was determined that these lots were not manufactured in conformance with the FDA's GMP guidance relating to validation. We expect cost of goods sold to decrease as we work to lower costs through quality and process improvements, enhanced manufacturing efficiencies and improvements in the overall quality and mix of our inventory.

Cost of goods sold of $28.6 million for the three months ended June 30, 2019 consisted primarily of costs associated with the manufacturing of Auryxia and $19.0 million in non-cash charges related to the fair-value inventory step-up from the application of purchase accounting.

Cost of Goods Sold - Amortization of Intangibles. Amortization of intangibles relates to the acquired developed product rights for Auryxia. During the three months ended June 30, 2020, this intangible asset was being amortized over its estimated useful life of approximately nine years using a straight-line method. Amortization of intangibles for each of the three months ended June 30, 2020 and 2019 was $9.1 million. We expect the combined effect of the lower carrying value of the Auryxia intangible asset following impairment in the second quarter of 2020, as further described below, and the corresponding adjustment to the estimated useful life of the developed product rights for Auryxia, to result in a decrease in future amortization charges.

Cost of Goods Sold - Impairment of Intangible Asset. In the second quarter of 2020, in connection with a routine business review, we reduced our short-term and long-term Auryxia revenue forecast. This reduction was primarily driven by the compounding impact of the CMS Decisions that rescinded Medicare Part D coverage of Auryxia for the IDA Indication, and imposed a prior authorization requirement for Auryxia for the Hyperphosphatemia Indication. As a result, we recorded an impairment charge of $115.5 million to the Auryxia intangible asset during the three months ended June 30, 2020. There were no such impairment charges during the three months ended June 30, 2019.

Research and Development Expenses. Research and development expenses were $52.8 million for the three months ended June 30, 2020, compared to $85.7 million for the three months ended June 30, 2019, a decrease of $32.9 million. The decrease was primarily due to the following:

	(in millions)
Vadadustat development expenses	$	(37.2)
Headcount, consulting and facilities	8.0
Other research and development	(3.7)
Total net decrease	$	(32.9)

The decrease in the costs related to the development of vadadustat is primarily attributable to a decrease in external costs related to the continued advancement of the PRO₂TECT Phase 3 program, for which we locked the database in the third quarter of 2020, and the INNO₂VATE Phase 3 program, for which we reported top-line data in the second quarter of 2020. The decreases in vadadustat research and development expenses, as well as other research and development expenses, were offset by an increase in headcount and consulting costs to support our research and development programs. Although we expect our research and development expenses in 2020 to decrease because top-line data from our INNO₂VATE studies were reported in the second quarter of 2020, and as PRO₂TECT nears top-line data readout, we will continue to incur significant research and development expenses in future periods in support of our global Phase 3 program and other studies for vadadustat and development of our other product candidates.

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Selling, General and Administrative Expenses. Selling, general and administrative expenses were $35.5 million for the three months ended June 30, 2020, compared to $36.1 million for the three months ended June 30, 2019. The decrease of $0.6 million was primarily due to decreases in sales and marketing, facilities and information technology costs. In 2020, we expect our selling, general and administrative expenses for our ongoing commercialization of Auryxia and for support of our ongoing research and development and potential commercialization of vadadustat and other product candidates to be relatively consistent with 2019.

License Expenses. License expense related to royalties due to Auryxia relating to sales of Riona in Japan were $1.0 million and $0.9 million for the three months ended June 30, 2020 and 2019, respectively.

Other Expense, Net. Other expense, net, was $1.9 million for the three months ended June 30, 2020 compared to other income, net of $0.5 million for the three months ended June 30, 2019. The change to other expense, net was primarily due to interest expense associated with our Term Loans in the three months ended June 30, 2020. We did not have similar expenses during the three months ended June 30, 2019. Other income, net for the three months ended June 30, 2019 was primarily due to interest income on our investments.

Benefit from Income Taxes. There was no benefit from income taxes for the three months ended June 30, 2020. Benefit from income taxes was $0.8 million for the three months ended June 30, 2019 due to a decrease in our net deferred tax liabilities, or DTLs. During the three months ended June 30, 2019, there was an increase in deferred tax assets associated with the state net operating loss generated during the period. This increase in deferred tax assets reduced our net DTLs which created a benefit from income taxes for the three months ended June 30, 2019.

Comparison of the Six Months Ended June 30, 2020 and 2019

	Six Months Ended				Increase
	June 30, 2020		June 30, 2019		(Decrease)
	(In Thousands)
Revenues:
Product revenue, net	$	59,905	$	52,200	$	7,705
License, collaboration and other revenue	118,715		$	121,269	(2,554)
Total revenues	178,620		173,469		5,151
Cost of goods sold:
Product	68,601		$	50,726	17,875
Amortization of intangibles	18,201		18,200		1
Impairment of intangible asset	115,527		—		115,527
Total cost of goods sold	202,329		68,926		133,403
Operating expenses:
Research and development	134,050		168,045		(33,995)
Selling, general and administrative	73,465		70,359		3,106
License expense	1,720		1,631		89
Total operating expenses	209,235		240,035		(30,800)
Operating loss	(232,944)		(135,492)		(97,452)
Other income (expense), net	(3,554)		1,299		(4,853)
Net loss before income taxes	(236,498)		(134,193)		(102,305)
Benefit from income taxes	—		(3,602)		3,602
Net loss	$	(236,498)	$	(130,591)	$	(105,907)

Product Revenue, Net. Net product revenue is derived from sales of our only commercial product in the United States, Auryxia. We distribute our product principally through a limited number of wholesale distributors as well as certain specialty pharmacy providers. Net product revenue was $59.9 million for the six months ended June 30, 2020, compared to net product revenue of $52.2 million for the six months ended June 30, 2019. The increase was primarily due to an increase in units sold. We did not

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experience any significant impact from COVID-19 on net product revenue for the six months ended June 30, 2020; however, we have no clear visibility on how product demand and payer mix may be impacted in the upcoming weeks and months and therefore, it is not possible to predict whether our future net product revenue will be impacted as a result of COVID-19 going forward.

In September 2018, CMS decided that Auryxia would not be covered by Medicare for the IDA Indication. While this decision does not impact CMS coverage of the Hyperphosphatemia Indication, it requires all Auryxia prescriptions for Medicare patients to undergo a prior authorization to ensure their use in the Hyperphosphatemia Indication. On October 15, 2019, we filed a complaint in the United States District Court for the District of Massachusetts against CMS and the U.S. Department of Health and Human Services challenging the CMS Decisions. See Part II, Item 1. Legal Proceedings for further information. While we believe that the vast majority of the Medicare prescriptions written for Auryxia today are for the Hyperphosphatemia Indication and therefore will continue to be covered by Medicare with prior authorization, the CMS Decisions have had and will continue to have an adverse impact on the sales of Auryxia for the Hyperphosphatemia Indication and the IDA Indication, and ultimately on the timing and number of prescriptions and Auryxia product revenue. Even if the CMS Decisions are ultimately reversed, the negative impact that they have had on the growth of sales of Auryxia for the Hyperphosphatemia Indication and the IDA Indication will continue, although less significantly than if the CMS Decisions are not reversed.

License, Collaboration and Other Revenue. License, collaboration and other revenue was $118.7 million for the six months ended June 30, 2020 compared to $121.3 million for the six months ended June 30, 2019. We recognized $111.7 million in collaboration revenue for the six months ended June 30, 2020 from our cost sharing arrangement under the Otsuka U.S. Agreement and the Otsuka International Agreement and recognition of a milestone earned under the MTPC Agreement. We recognized $118.2 million in collaboration revenue for the six months ended June 30, 2019 from our cost sharing arrangement under the Otsuka U.S. Agreement and the Otsuka International Agreement and recognition of a milestone under the MTPC Agreement. The decrease in revenue between the two periods was attributable to a decrease of $11.5 million of revenue recognized under both the Otsuka U.S. Agreement and Otsuka International Agreement. This decrease was partially offset by an additional $5.0 million of revenue recognized under the MTPC Agreement due to timing of milestone recognition and an additional $4.0 million of revenue recognized for the supply of validation drug product to MTPC during the second quarter of 2020. We expect our Otsuka collaboration revenue to decrease in the near term because our top-line data from our INNO₂VATE studies have been reported, and our PRO₂TECT studies are nearing completion.

Cost of Goods Sold - Product. Cost of goods sold of $68.6 million for the six months ended June 30, 2020 consists of costs associated with the manufacturing of Auryxia, $31.1 million in non-cash charges related to the fair-value inventory step-up from the application of purchase accounting, $11.0 million in non-cash charges related to an increase to the liability for excess purchase commitments and $10.1 million primarily related to the write-down of inventory associated with specific lots of Auryxia because it was determined that these lots were not manufactured in conformance with the FDA's GMP guidance relating to validation. We expect cost of goods sold to decrease as we work to lower costs through quality and process improvements, enhanced manufacturing efficiencies and improvements in the overall quality and mix of our inventory. 

Cost of goods sold of $50.7 million for the six months ended June 30, 2019 consisted primarily of costs associated with the manufacturing of Auryxia and $33.6 million in non-cash charges related to the fair-value inventory step-up from the application of purchase accounting. 

Cost of Goods Sold - Amortization of Intangibles. Amortization of intangibles relates to the acquired developed product rights for Auryxia. During the six months ended June 30, 2020, this intangible asset was being amortized over its estimated useful life of approximately nine years using a straight-line method. Amortization of intangibles for each of the six months ended June 30, 2020 and 2019 was $18.2 million. We expect the combined effect of the lower carrying value of the Auryxia intangible asset following impairment in the second quarter of 2020, as further described below, and the corresponding adjustment to the estimated useful life of the developed product rights for Auryxia, to result in a decrease in future amortization charges. 

Cost of Goods Sold - Impairment of Intangible Asset. In the second quarter of 2020, in connection with a routine business review, we reduced our short-term and long-term Auryxia revenue forecast. This reduction was primarily driven by the compounding impact of the CMS Decisions that rescinded Medicare Part D coverage of Auryxia for the IDA Indication, and imposed a prior authorization requirement for Auryxia for the Hyperphosphatemia Indication. As a result, we recorded an impairment charge of $115.5 million to the Auryxia intangible asset during the six months ended June 30, 2020. There were no such impairment charges during the six months ended June 30, 2019.

Research and Development Expenses. Research and development expenses were $134.1 million for the six months ended June 30, 2020, compared to $168.0 million for the six months ended June 30, 2019, a decrease of $34.0 million. The decrease was primarily due to the following:

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	(in millions)
Vadadustat development expenses	$	(44.9)
Headcount, consulting and facilities	16.9
Other research and development	(6.0)
Total net decrease	$	(34.0)

The decrease in the costs related to the development of vadadustat is primarily attributable to a decrease in external costs related to the continued advancement of the PRO₂TECT Phase 3 program, for which we locked the database in the third quarter of 2020, and the INNO₂VATE Phase 3 program, for which we reported top-line data in the second quarter of 2020. The aggregate decrease in costs was partially offset by an increase in external costs related to other vadadustat clinical and preclinical activities as well as regulatory activities. The decreases in vadadustat research and development expenses, as well as other research and development expenses, were offset by an increase in headcount and consulting costs to support our research and development programs. Although we expect our research and development expenses in 2020 to decrease because top-line data from our INNO₂VATE studies were reported in the second quarter of 2020, and as PRO₂TECT nears top-line data readout, we will continue to incur significant research and development expenses in future periods in support of our global Phase 3 program and other studies for vadadustat and development of our other product candidates.

Selling, General and Administrative Expenses. Selling, general and administrative expenses were $73.5 million for the six months ended June 30, 2020, compared to $70.4 million for the six months ended June 30, 2019. The increase of $3.1 million was primarily due to increases in headcount and consulting costs. In 2020, we expect our selling, general and administrative expenses for our ongoing commercialization of Auryxia and for support of our ongoing research and development and potential commercialization of vadadustat and other product candidates to be relatively consistent with 2019.

License Expenses. License expense related to royalties due to Auryxia relating to sales of Riona in Japan were $1.7 million and $1.6 million for the six months ended June 30, 2020 and 2019, respectively.

Other Expense, Net. Other expense, net, was $3.6 million for the six months ended June 30, 2020 compared to other income, net of $1.3 million for the six months ended June 30, 2019. The change to other expense, net was primarily due to interest expense associated with our Term Loans in the six months ended June 30, 2020. We did not have similar expenses during the six months ended June 30, 2019. Other income, net for the six months ended June 30, 2019 was primarily due to interest income on our investments.

Benefit from Income Taxes. There was no benefit from income taxes for the six months ended June 30, 2020. Benefit from income taxes was $3.6 million for the six months ended June 30, 2019 due to a decrease in our DTLs. During the six months ended June 30, 2019, there was an increase in deferred tax assets associated with the state net operating loss generated during the period. This increase in deferred tax assets reduced our net DTLs which created a benefit from income taxes for the six months ended June 30, 2019.

Liquidity and Capital Resources

We have incurred losses and cumulative negative cash flows from operations since our inception in February 2007, and as of June 30, 2020, we had an accumulated deficit of $1.0 billion. We anticipate that we will continue to incur losses for the foreseeable future. We expect to continue to incur additional research and development and selling, general and administrative expenses for our ongoing research and development and potential commercialization of vadadustat. We will require additional capital to pursue development and commercial activities related to expanded indications for current products and any additional products and product candidates. We expect to finance future cash needs through product revenue, public or private equity or debt transactions, payments from our collaborators, royalty transactions, strategic transactions, or a combination of these approaches. Given the impact from COVID-19 on the U.S. economy and financial markets, there can be no assurance that additional funding will be available on terms acceptable to us, or at all.

We have funded our operations principally through sales of our common stock, payments received from our collaboration partners, debt, and following the Merger, product sales. As of June 30, 2020, we had cash and cash equivalents and available for sale securities of approximately $295.3 million. Cash in excess of immediate requirements is invested in accordance with our investment policy, primarily with a view to liquidity and capital preservation. Accordingly, available for sale securities, consisting principally of corporate and government debt securities stated at fair value, are also available as a source of liquidity.

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Cash Flows

The following table sets forth the primary sources and uses of cash for each of the periods set forth below:

	Six Months Ended
	June 30, 2020		June 30, 2019
	(In Thousands)
Net cash provided by (used in):
Operating activities	$	(52,369)	$	(176,295)
Investing activities	(49,750)		164,506
Financing activities	200,155		(5,643)
Net (decrease) increase in cash, cash equivalents, and restricted cash	$	98,036	$	(17,432)

Operating Activities. Net cash used in operating activities of $52.4 million for the six months ended June 30, 2020 was largely driven by timing of payments on our Phase 3 development program for vadadustat, rebate payments and payments for inventory. These payments were partially offset by adjustments for non-cash items, including the intangible asset impairment charge of $115.5 million, fair value step-up of inventory sold or written off of $31.1 million, amortization of intangibles of $18.2 million, stock-based compensation expense of $11.8 million, an increase to the liability for excess purchase commitments of $11.0 million and write-downs of inventory of $10.1 million primarily associated with specific lots of Auryxia because it was determined that these lots were not manufactured in conformance with the FDA's GMP guidance relating to validation.

Net cash used in operating activities of $176.3 million for the six months ended June 30, 2019 was largely driven by timing of payments on our Phase 3 development program for vadadustat, payments for inventory and merger-related liabilities. These payments were partially offset by adjustments for non-cash items, including the fair value step-up of inventory sold or written off of $33.6 million, amortization of intangibles of $18.2 million, and stock-based compensation expense of $4.4 million.

Investing Activities. Net cash used in investing activities for the six months ended June 30, 2020 was $49.8 million and was comprised primarily of purchase of available for sale securities of $50.0 million.

Net cash provided by investing activities for the six months ended June 30, 2019 was $164.5 million and was comprised primarily of proceeds from the maturities of available for sale securities of $103.7 million and proceeds from the sales of available for sale securities of $64.7 million, partially offset by purchases of equipment of $3.9 million.

Financing Activities. Net cash provided by financing activities for the six months ended June 30, 2020 was $200.2 million and consisted primarily of proceeds from the public issuance of common stock of $198.9 million, proceeds from the exercise of stock options and proceeds from the sale of stock under our employee stock purchase plan.

Net cash used in financing activities for the six months ended June 30, 2019 was $5.6 million and consisted primarily of payments on loans payable of $15.0 million, partially offset by proceeds from the public issuance of common stock, proceeds from the exercise of stock options and proceeds from the sale of stock under our employee stock purchase plan.

Operating Capital Requirements

We have one product, Auryxia, approved for commercial sale in the United States, but have not generated, and may not generate, enough product revenue from the sale of Auryxia to realize net profits from product sales. We anticipate that we will continue to generate losses for the foreseeable future, and we expect the losses to increase as we continue the development of, and seek marketing approvals for, our product candidates. We are subject to all risks incident to the development and commercialization of novel therapeutics, and we may encounter unforeseen expenses, difficulties, complications, delays and other unknown factors that may adversely affect our business. We expect to continue to incur additional costs associated with operating as a public company and we anticipate that we will need substantial additional funding in connection with our continuing operations.

As of June 30, 2020, we had cash, cash equivalents and available for sale securities of $295.3 million. At the inception of our collaboration agreements with Otsuka and MTPC, our collaborators committed to an aggregate of approximately $573.0 million or more in cost-share funding, of which we received approximately $272.0 million at the onset of the collaborations, and the remainder of which we generally continue to receive on a quarterly prepaid basis, and through license payments. We expect our cash resources to fund our current operating plan beyond the expected U.S. launch of our product candidate, vadadustat, assuming regulatory approval.

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We will require additional capital to pursue development and commercial activities related to expanded indications for current products and any additional products and product candidates. We expect to finance future cash needs through product revenue, public or private equity or debt transactions, payments from our collaborators, royalty transactions, strategic transactions, or a combination of these approaches. We have based these estimates on assumptions that may prove to be wrong, and we could use our available capital resources sooner than we currently expect. Furthermore, our development and regulatory milestones may not be achieved, we may not receive the anticipated funding from our collaboration partners, and we may not secure other sources of financing. Additional funds may not be available to us on acceptable terms or at all. If we are unable to raise additional capital in sufficient amounts when needed or on attractive terms, we may not be able to pursue development and commercial activities related to expanded indications for current products and any additional products and product candidates. If we raise additional funds through the issuance of additional debt or equity securities, it could result in dilution to our existing stockholders or increased fixed payment obligations, and any such securities may have rights senior to those of our common stock. Any of these events could significantly harm our business, financial condition and prospects.

Our forecast of the period of time through which our financial resources will be adequate to support our operations is a forward-looking statement and involves risks and uncertainties, and actual results could vary as a result of a number of factors. We have based this estimate on assumptions that may be substantially different than actual results, and we could utilize our available capital resources sooner than we currently expect. Our future funding requirements, both near- and long-term, will depend on many factors including, but not limited to, those described under Part II, Item 1A. Risk Factors.

If we cannot expand our operations or otherwise capitalize on our business opportunities because we lack sufficient capital, our business, financial condition and results of operations could be materially adversely affected.

Contractual Obligations and Commitments

Leases

We lease approximately 65,167 square feet of office and lab space in Cambridge, Massachusetts under a lease which was most recently amended in April 2018, collectively the Cambridge Lease. Under the Third Amendment to the Cambridge Lease, or the Third Amendment, executed in July 2016, total monthly lease payments under the initial base rent were approximately $242,000 and are subject to annual rent escalations. In addition to such annual rent escalations, base rent payments for a portion of said premises commenced on January 1, 2017 in the monthly amount of approximately $22,000. The Fourth Amendment to the Cambridge Lease, executed in May 2017, provided additional storage space to us and did not impact rent payments. In April 2018, we entered into a Fifth Amendment to the Cambridge Lease, or the Fifth Amendment, for an additional 19,805 square feet of office space on the 12th floor. Monthly lease payments for the existing 45,362 square feet of office and lab space, under the Third Amendment, remain unchanged. The new space leased by us was delivered in September 2018 and additional monthly lease payments of approximately $135,000 commenced in February 2019 and are subject to annual rent escalations, which commenced in September 2019.

Additionally, as a result of the Merger, we have a lease for 27,300 square feet of office space in Boston, Massachusetts, or the Boston Lease, which expires on February 28, 2023. The total monthly lease payments under the base rent are approximately $136,000 and are subject to annual rent escalations.

In September 2019, Keryx entered into an agreement to sublease the Boston office space to Foundation Medicine, Inc., or Foundation. The sublease is subject and subordinate to the Boston Lease between Keryx and the landlord. The term of the sublease commenced on

October 16, 2019, upon receipt of the required consent from the landlord for the sublease agreement, and expires on February 28, 2023. Foundation is obligated to pay Keryx rent that approximates the rent due from us to Keryx’s landlord with respect to the Boston Lease. Keryx continues to be obligated for all payment terms pursuant to the Boston Lease, and we will guaranty Keryx’s obligations under the sublease.

Term Loans

On November 11, 2019, Akebia, with Keryx as guarantor, entered into a loan agreement, or the Loan Agreement, with BioPharma Credit PLC as collateral agent and a lender, or the Collateral Agent, and BioPharma Credit Investments V (Master) LP as a lender, pursuant to which term loans in an aggregate principal amount of $100.0 million were made available to us in two tranches, subject to certain terms and conditions, or the Term Loans. BioPharma Credit PLC subsequently transferred its interest in the term loans, solely in its capacity as a lender, to its affiliate, BPCR Limited Partnership. The Collateral Agent and BPCR Limited Partnership are collectively referred to as Pharmakon. The first tranche of $80.0 million, or Tranche A, was

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drawn on November 25, 2019, or the Tranche A Funding Date. The second tranche, available until December 31, 2020, allows us to borrow, at our option, an additional $20.0 million, or Tranche B, subject to the satisfaction of customary conditions. The date on which Tranche B is drawn, the Tranche B Funding Date, and each of the Tranche A Funding Date and the Tranche B Funding Date, a Funding Date.

Proceeds from the Term Loans may be used for general corporate purposes. We and Keryx entered into a Guaranty and Security Agreement with the Collateral Agent, or the Guaranty and Security Agreement, on the Tranche A Funding Date. Pursuant to the Guaranty and Security Agreement, our obligations under the Term Loans are unconditionally guaranteed by Keryx, or the Guarantee. Additionally, our and Keryx’s obligations under the Term Loans and the Guarantee are secured by a first priority lien on certain assets of ours and Keryx’s, including Auryxia and certain related assets, cash, and certain equity interests held by us and Keryx, collectively the Collateral.

The Term Loans bear interest at a floating rate per annum equal to the three-month LIBOR rate plus 7.50%, subject to a 2.00% LIBOR floor and a 3.35% LIBOR cap, payable quarterly in arrears. The Term Loans will mature on the fifth anniversary of the Tranche A Funding Date, or the Maturity Date. We will repay the principal under the Term Loans in equal quarterly payments starting on the 33rd-month anniversary of the applicable Funding Date or, if certain conditions are met, it will have the option to repay the principal in equal quarterly payments starting on the 48th-month anniversary of the applicable Funding Date, or collectively the Amortization Schedule. Under certain circumstances, unless certain liquidity conditions are met, the Maturity Date may decrease by up to one year, and the Amortization Schedule may correspondingly commence up to one year earlier.  

On the Tranche A Funding Date, we paid to Pharmakon a facility fee equal to 2.00% of the aggregate principal amount of the Term Loans, or $2.0 million, in addition to other expenses incurred by Pharmakon and reimbursed by us, or Lender Expenses. The Tranche A draw was $77.3 million, net of facility fee, Lender Expenses and issuance costs. The Loan Agreement permits voluntary prepayment at any time in whole or in part, subject to a prepayment premium. The prepayment premium would be 2.00% of the principal amount being prepaid prior to the third anniversary of the applicable Funding Date, 1.00% on or after the third anniversary, but prior to the fourth anniversary, of the applicable Funding Date, and 0.50% on or after the fourth anniversary of the applicable Funding Date but prior to the Maturity Date, and a make-whole premium on or prior to the second anniversary of the applicable Funding Date in an amount equal to foregone interest through the second anniversary of the applicable Funding Date. A change of control triggers a mandatory prepayment of the Term Loans.

The Loan Agreement contains customary representations, warranties, events of default and covenants of ours and our subsidiaries, including maintaining, on an annual basis, a minimum liquidity threshold starting in 2021, and on a quarterly basis, a minimum net sales threshold for Auryxia starting in the fourth quarter of 2020. If an event of default occurs and is continuing under the Loan Agreement, the Collateral Agent is entitled to take enforcement action, including acceleration of amounts due under the Loan Agreement. Under certain circumstances, a default interest rate will apply on all outstanding obligations during the occurrence and continuance of an event of default. As of June 30, 2020, we determined that no events of default had occurred.

We assessed the terms and features of the Loan Agreement in order to identify any potential embedded features that would require bifurcation or any beneficial conversion feature. As part of this analysis, we assessed the economic characteristics and risks of the Loan Agreement, including put and call features. The terms and features assessed include a potential extension to the interest-only period dependent on both no event of default having occurred and continuing and on our achieving certain regulatory and revenue conditions. We also assessed the acceleration of the obligations under the Loan Agreement under an event of default. In addition, under certain circumstances, a default interest rate will apply on all outstanding obligations during the occurrence and continuance of an event of default. In accordance with ASC 815, we concluded that these features are not clearly and closely related to the host instrument, and represent a single compound derivative that is required to be re-measured at fair value on a quarterly basis.

Manufacturing Agreements

As a result of the Merger, our contractual obligations include Keryx’s commercial supply agreements with BioVectra Inc., or BioVectra, and Siegfried Evionnaz SA, or Siegfried, to supply commercial drug substance for Auryxia.

Pursuant to the Manufacture and Supply Agreement with BioVectra and the Product Manufacture and Supply and Facility Construction Agreement with BioVectra, collectively the BioVectra Agreement, we have agreed to purchase a minimum quantity of drug substance of Auryxia at predetermined prices. The price per kilogram will decrease with an increase in quantity above the minimum purchase quantity. In addition, the BioVectra Agreement contained contingent milestone payments for capital developments in connection with construction of an expansion of the site of the BioVectra production facility for the manufacture of drug substance for Auryxia. These milestone payments were achieved by BioVectra and paid and fully recorded

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prior to the Merger. The term of the BioVectra Agreement expires in late 2026, after which, it automatically renews for specified terms until terminated. We have the right to terminate the BioVectra Agreement prior to the contract term, which could result in an early termination fee. As of June 30, 2020, we are required to purchase a minimum quantity of drug substance for Auryxia annually at a total cost of approximately $127.0 million through the year ended December 31, 2026.

As part of purchase accounting, we identified an executory contract in the supply agreement between Keryx and BioVectra, which includes future firm purchase commitments. This executory contract was deemed to have an off-market element related to the amount of purchase commitments that exceed the current forecast. As a result, we recorded a liability of $29.5 million in purchase accounting as of the acquisition date for the preliminary fair value of the off-market element. In the second quarter of 2020, in connection with the reduced short-term and long-term Auryxia revenue forecast, we increased the liability for excess purchase commitments by $11.0 million for a total liability of $41.5 million and recorded a corresponding charge to cost of goods sold. Additionally, through June 30, 2020, we recorded $1.0 million in accretion expense related to the present value discount associated with this liability.

Pursuant to the Siegfried Master Manufacturing Services and Supply Agreement, or the Siegfried Agreement, we have agreed to purchase a minimum quantity of drug substance of Auryxia at predetermined prices. The price per kilogram will decrease with an increase in quantity above the minimum purchase quantity. The term of the Siegfried Agreement expires on December 31, 2021, after which, it automatically renews for one-year terms until terminated. The Siegfried Agreement provides us with certain termination rights prior to December 31, 2021. As of June 30, 2020, we are required to purchase a minimum quantity of drug substance for Auryxia annually at a total cost of approximately $51.8 million through the year ended December 31, 2021.

On April 9, 2019, we entered into a Supply Agreement with Esteve Química, S.A., or Esteve, or the Esteve Agreement. The Esteve Agreement includes the terms and conditions under which Esteve will manufacture vadadustat drug substance, or API, for commercial use. Pursuant to the Esteve Agreement, we provide rolling forecasts to Esteve on a quarterly basis, or the Esteve Forecast. The Esteve Forecast reflects our needs for API produced by Esteve over a certain number of months, represented as a quantity of API per calendar quarter. The parties have agreed to a volume-based pricing structure under the Esteve Agreement. The Esteve Agreement has an initial term of four years, beginning April 9, 2019 and ending April 9, 2023. As of June 30, 2020, we had a minimum commitment with Esteve for $13.6 million through the second quarter of 2021. Subsequent to June 30, 2020, our minimum commitment with Esteve increased to $23.9 million through the third quarter of 2021.

On March 11, 2020, we entered into a Supply Agreement with Patheon Inc., or Patheon, or the Patheon Agreement. The Patheon Agreement includes the terms and conditions under which Patheon will manufacture vadadustat drug product for commercial use. Pursuant to the Patheon Agreement, we provide Patheon a long-term forecast on an annual basis, as well as short-term forecasts on a quarterly basis, or the Patheon Forecast. The Patheon Forecast reflects our needs commercial supply of vadadustat drug product produced by Patheon, represented as a quantity of drug product per calendar quarter. The parties have agreed to a volume-based pricing structure under the Patheon Agreement. The Patheon Agreement has an initial term beginning March 11, 2020 and ending June 30, 2023. As of June 30, 2020, we had a minimum commitment with Patheon for $0.4 million through the fourth quarter of 2020. Subsequent to June 30, 2020, our minimum commitment with Patheon increased to $1.3 million through the third quarter of 2021.

On April 2, 2020, we entered into a Supply Agreement with STA Pharmaceutical Hong Kong Limited, a subsidiary of Wuxi AppTec, or WuXi STA, or the WuXi STA Agreement. The WuXi STA Agreement includes the terms and conditions under which WuXi STA will manufacture vadadustat API for commercial use. Pursuant to the WuXi STA Agreement, we provide rolling forecasts to WuXi STA on a quarterly basis, or the WuXi STA Forecast. The WuXi STA Forecast reflects our needs for API produced by WuXi STA over a certain number of months, represented as a quantity of API per calendar quarter. The parties have agreed to a volume-based pricing structure under the WuXi STA Agreement. The WuXi STA Agreement has an initial term of four years, beginning April 2, 2020 and ending April 2, 2024. There were no minimum commitments under the WuXi STA Agreement as of June 30, 2020. Subsequent to June 30, 2020, we have a minimum commitment with WuXi STA for $44.7 million through the fourth quarter of 2021.

Other Third Party Contracts

Under our agreement with IQVIA to provide contract research organization services for the PRO₂TECT and INNO₂VATE programs, the total remaining contract costs as of June 30, 2020 were approximately $23.2 million, of which Otsuka reimburses a significant portion back to us. The estimated period of substantive performance for the committed work with IQVIA is through the end of 2020. We also contract with various other organizations to conduct research and development activities with remaining contract costs to us of approximately $68.1 million as of June 30, 2020. The scope of the services under these research and development contracts can be modified and the contracts cancelled by us upon written notice, and therefore not included in the table of contractual obligations and commitments. In some instances, the contracts may be cancelled by the third party upon written notice.

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Off-Balance Sheet Arrangements

As of June 30, 2020, we did not have any off-balance sheet arrangements as defined in the rules and regulations of the SEC.

Critical Accounting Policies and Significant Judgments and Estimates

Our management’s discussion and analysis of our financial condition and results of operations are based on our unaudited condensed consolidated financial statements, which have been prepared in accordance with U.S. generally accepted accounting principles. The preparation of these unaudited condensed consolidated financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, and expenses and the disclosure of contingent assets and liabilities in our unaudited condensed consolidated financial statements. On an ongoing basis, we evaluate our estimates and judgments, including those related to revenue, prepaid and accrued research and development expenses and stock-based compensation. We base our estimates on historical experience, known trends and events, and various other factors that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions. In making estimates and judgments, management employs critical accounting policies.

During the six months ended June 30, 2020, there were no material changes to our critical accounting policies as reported in our Annual Report on Form 10-K.

Recent Accounting Pronouncements

For additional discussion of recent accounting pronouncements, please refer to New Accounting Pronouncements – Recently Adopted and New Accounting Pronouncements – Not Yet Adopted included within Note 2 to our condensed consolidated financial statements in Part I, Item 1. Financial Statements (unaudited).  

Item 3. Quantitative and Qualitative Disclosures about Market Risk.

We are exposed to market risk related to changes in interest rates. As of June 30, 2020 and December 31, 2019, we had cash and cash equivalents and available for sale securities of $295.3 million and $147.7 million, respectively, consisting primarily of money market mutual funds consisting of U.S. government debt securities, certificates of deposit and corporate debt securities. Our primary exposure to market risk is interest rate sensitivity, which is affected by changes in the general level of U.S. interest rates, particularly because our investments are in short-term securities. Our investments are subject to interest rate risk and will fall in value if market interest rates increase. Due to the short-term duration of our investment portfolio and the low risk profile of our investments, an immediate 100 basis point change in interest rates would not have a material effect on the fair market value of our portfolio.

Item 4. Controls and Procedures.

Management’s Evaluation of our Disclosure Controls and Procedures

We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed in the reports that we file or submit under the Securities Exchange Act of 1934, as amended, is (1) recorded, processed, summarized, and reported within the time periods specified in the U.S. Securities and Exchange Commission’s rules and forms and (2) accumulated and communicated to our management, including our principal executive officer and principal financial officer, to allow timely decisions regarding required disclosure.

As of June 30, 2020, our management, with the participation of our principal executive officer and principal financial officer, evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended). Our management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving their objectives, and management necessarily applies its judgment in evaluating the cost-benefit relationship of possible controls and procedures. Based on our evaluation, our management concluded that, as of June 30, 2020, our disclosure controls and procedures were not effective because our internal controls over financial reporting were not adequate due to the material weakness described below.

During the fourth quarter of fiscal 2019, we identified a material weakness in our internal control over financial reporting related to our inventory process. Specifically, we did not design and maintain effective controls over the completeness, accuracy, presentation and disclosure of inventory related to (i) the review of inventory unit and valuation reconciliations, (ii) the annual validation of the inventory costing and (iii) the periodic assessment of inventory expiry and related reserves.

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During fiscal 2020, we are enhancing our system of internal controls over financial reporting to remediate the material weakness described above with the following remediation efforts: (i) providing training to individuals with internal control responsibilities including review documentation requirements, (ii) evaluating alignment of resources and enhanced management review and monitoring inventory controls, (iii) reviewing current inventory process and procedures to identify opportunities to enhance their design and operation and (iv) designing controls that address the completeness and accuracy of any key reports utilized in the execution of internal controls. We will also be performing control testing throughout the year to validate the operating effectiveness of internal controls over financial reporting to gain assurance that such controls are present and functioning as designed.

As the revised and enhanced controls need to be in operation for a sufficient period of time and be tested to ensure that the controls are operating as designed, management has concluded that the material weakness cannot be considered remediated as of June 30, 2020.

Changes in Internal Control over Financial Reporting

During the quarter ended June 30, 2020, we implemented certain internal controls in connection with our remediation efforts described above. There have been no other changes in our internal control over financial reporting, as such term is defined in Rules 13a-15(f) and 15d-15(f) promulgated under the Securities Exchange Act of 1934, as amended, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II—OTHER INFORMATION

Item 1. Legal Proceedings.

Legal Proceedings Relating to Vadadustat

Opposition Proceedings Against Patents Covering Vadadustat

In July 2011, a third party filed an opposition to our issued European Patent No. 2044005, or the ’005 EP Patent, in the European Patent Office, or the EPO. During the oral proceedings, which took place on April 10, 2013, the Opposition Division of the EPO maintained the ’005 EP Patent. This decision resulted in the maintenance of a claim directed to a compound chosen from a group of eight compounds, including vadadustat, as well as claims to compositions and methods for treating various diseases, including, but not limited to, anemia. Both parties appealed the decision of the Opposition Division of the EPO. On February 27, 2018, we withdrew the ’005 EP Patent from appeal and filed a divisional patent application to pursue a focused claim set that includes claims for vadadustat, as well as pharmaceutical compositions and methods of treating anemia.

In September 2018, Dr. Reddy’s Laboratories Limited filed an opposition to our issued Indian Patent No. 287720 in the Indian Patent Office.

Opposition and Invalidity Proceedings Against FibroGen, Inc.

We filed an opposition in the EPO against FibroGen, Inc.’s, or FibroGen’s, European Patent No. 1463823, or the ’823 EP Patent on December 5, 2013, and an oral proceeding took place March 8 and 9, 2016. Following the oral proceeding, the Opposition Division of EPO ruled that the patent as granted did not meet the requirements for patentability under the European Patent Convention and, therefore, revoked the patent in its entirety. FibroGen has appealed that decision. Likewise, we also filed an invalidity proceeding before the Japan Patent Office, or JPO, on June 2, 2014 against certain claims of FibroGen’s Japanese Patent No. 4804131, or the ’131 JP Patent, which is the Japanese counterpart to the ’823 EP Patent, and the JPO issued a preliminary decision finding all of the challenged claims to be invalid. FibroGen subsequently amended the claims and the JPO accepted the amendments. The resulting ’131 JP Patent does not cover vadadustat or any pyridine carboxamide compounds. To date, FibroGen has been unsuccessful in its attempts to obtain a patent in the United States covering the same claim scope as it obtained initially in Europe and Japan in the ’823 EP Patent and ’131 JP Patent. In the event FibroGen were to obtain such a patent in the United States, we may decide to challenge the patent as we have done in Europe and Japan.

On May 13, 2015, May 20, 2015 and July 6, 2015, we filed oppositions to FibroGen’s European Patent Nos. 2322155, or the ’155 EP Patent, 1633333, or the ’333 EP Patent, and 2322153, or the ’153 EP Patent in the EPO, respectively, requesting the patents be revoked in their entirety. These related patents claim, among other things, various compounds that either stabilize HIFα or inhibit a HIF hydroxylase or a HIF prolyl hydroxylase, or HIF-PH, for treating or preventing various conditions, including, among other things, iron deficiency, microcytosis associated with iron deficiency, anemia of chronic disease, anemia wherein the subject has a transferrin saturation of less than 20%, anemia refractory to treatment with exogenously administered erythropoietin and microcytosis in microcytic anemia. Such method of use patents do not prevent persons from using the compound for other uses, including any previously known use of the compound. In particular, these patents do not claim methods of using any of our product candidates for purposes of inhibiting HIF-PH for the treatment of anemia due to chronic kidney disease, or CKD. While we do not believe these patents will prevent us from commercializing vadadustat for the treatment of anemia due to CKD, we filed these oppositions to provide us and our collaborators with maximum flexibility for developing vadadustat and our pipeline of HIF-PHI compounds.

Oppositions to the ’155 EP Patent and the ’153 EP Patent were also filed in the EPO by Glaxo Group Limited, or Glaxo, and by Bayer Intellectual Property GmbH, Bayer Pharma Aktiengesellschaft, and Bayer Animal Health GmbH, or, collectively, Bayer. Glaxo withdrew its oppositions on March 2, 2020.

With regard to the opposition that we filed in Europe against the ’333 EP Patent, an oral proceeding took place on December 8 and 9, 2016. Following the oral proceeding, the Opposition Division of the EPO ruled that the patent as granted did not meet the requirements for patentability under the European Patent Convention and, therefore, revoked the patent in its entirety. On December 9, 2016, FibroGen filed a notice to appeal the decision to revoke the ’333 EP Patent. An oral proceeding for the appeal is scheduled for March 2021.

In oral proceedings held on May 29, 2017, regarding the ’155 EP Patent, the European Opposition Division ruled that the ’155 EP Patent as granted did not meet the requirements for patentability under the European Patent Convention and, therefore, revoked the patent in its entirety. FibroGen filed a notice to appeal the decision to revoke the ’155 EP Patent on May 29, 2017. An oral proceeding for the appeal is scheduled for March 2021.

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Subsequently, in related oral proceedings held on May 31, 2017 and June 1, 2017 for the ’153 EP Patent, the Opposition Division of the EPO maintained the patent after FibroGen significantly narrowed the claims to an indication for which vadadustat is not intended to be developed. We and Glaxo separately filed notices to appeal the decision to maintain the ’153 EP Patent on November 9, 2017. Bayer filed a notice to appeal the decision on November 14, 2017. An oral proceeding for the appeal is scheduled for July 2020.

On April 3, 2019, we filed oppositions to FibroGen’s European Patent Nos. 2289531, or the ’531 EP Patent, and 2298301, or the ’301 EP Patent in the EPO, respectively, requesting the patents be revoked in their entirety.

On February 10, 2020, we filed an opposition to FibroGen’s European Patent No. 2324834 in the EPO requesting the patent to be revoked in its entirety.

On May 21, 2018, we filed a Statement of Claim in Canadian Federal Court to challenge the validity of three of FibroGen’s HIF-related patents in Canada: CA 2467689, CA 2468083, and CA 2526496. On June 25, 2020, the parties agreed to dismiss the CA 2467689 patent from the lawsuit.

On June 22, 2018, we and our collaboration partner in Japan, Mitsubishi Tanabe Pharma Corporation, or MTPC, jointly filed a Request for Trial before the JPO to challenge the validity of one of FibroGen’s HIF-related patents in Japan, JP4845728. On July 20, 2018 and August 13, 2018, we and MTPC jointly filed a Request for Trial before the JPO to challenge the validity of two additional FibroGen HIF-related patents in Japan, JP5474872 and JP5474741, respectively. On September 26, 2019, the JPO conducted an invalidation trial for JP5474872 and JP4845728. On November 11, 2019, the JPO conducted an invalidation trial for JP5474741. On February 10, 2020, the JPO issued a pre-notice of a trial decision for JP4845728, which invalidated all claims except two claims in amended form. On March 11, 2020, the JPO issued a pre-notice of a trial decision for JP5474872, which invalidated all claims except one claim in amended form. On April 2, 2020, the JPO issued a pre-notice of a trial decision for JP5474741, which invalidated all claims except two claims in amended form. We do not believe these decisions will prevent our collaboration partner MTPC from launching vadadustat for the treatment of anemia due to CKD in Japan.

On December 13, 2018, we and our collaboration partner, Otsuka Pharmaceutical Co. Ltd., or Otsuka, filed Particulars of Claim in the Patents Court of the United Kingdom, or the UK, to challenge the validity of FibroGen’s six HIF-related patents in the UK: the ’823 EP Patent (UK), the ’333 EP Patent (UK), the ’153 EP Patent (UK), the ’155 EP Patent (UK), European Patent (UK) No. 2,289,531, or the ’531 EP Patent (UK), and European Patent (UK) No. 2,298,301, or the ’301 EP Patent (UK).  In May 2019, Astellas Pharma Inc., or Astellas, the exclusive licensee of FibroGen’s HIF-related patents, sued Akebia and Otsuka for patent infringement in the Patents Court of the UK. In September 2019, we and Otsuka filed an Amended Particulars of Claim to include FibroGen’s European Patent No. 1487472, or the ’472 EP Patent (UK). On February 28, 2020, the parties agreed to dismiss the ’472 EP Patent (UK) from the trial.

A trial was conducted on March 2-19, 2020. On April 20, 2020, the Patents Court of the UK issued a judgment in favor of Akebia, which invalidated all the claims at issue in each of the ’823 EP Patent (UK), the ’333 EP Patent (UK), the ’153 EP Patent (UK), the ’155 EP Patent (UK) and the ’301 EP Patent (UK). The ’531 EP Patent (UK) was amended to a single claim to recite one specific compound; this claim was held to be valid but not infringed by vadadustat. On June 11, 2020, FibroGen and Astellas appealed the Patents Court’s judgment on the invalidity of the ’823 EP Patent (UK), the ’301 EP Patent (UK), the ’333 EP Patent (UK), the ’153 EP Patent (UK), and the ’155 EP Patent (UK) in the Court of Appeal (Civil Division).

Legal Proceedings Relating to Auryxia

ANDA Litigation

On October 31, 2018, November 6, 2018, December 24, 2018 and February 4, 2019, Keryx received Paragraph IV certification notice letters regarding Abbreviated New Drug Applications, or ANDAs, submitted to the U.S. Food and Drug Administration, or FDA, by Lupin Atlantis Holdings SA, or Lupin, Teva Pharmaceuticals USA, Inc., or Teva, Chemo Research S.L., or Chemo, and Mylan Pharmaceuticals Inc., or Mylan, respectively, requesting approval for generic versions of Auryxia tablets (210 mg iron per tablet). On December 13, 2018, Keryx and its licensors, Panion & BF Biotech, Inc., or Panion, and Chen Hsing Hsu, M.D., filed a complaint for patent infringement against Lupin and Lupin Ltd., or the Lupin Defendants, in the United States District Court for the District of Delaware, or the Delaware District Court, arising from Lupin’s ANDA filing with the FDA. On December 19, 2018, Keryx and Panion filed a complaint for patent infringement against Teva and Teva Pharmaceutical Industries Limited, or the Teva Defendants, in the Delaware District Court arising from Teva’s ANDA filing with the FDA. On February 1, 2019, Keryx, Panion and Dr. Hsu filed a complaint for patent infringement against Chemo and Insud Pharma S.A., or the Chemo Defendants, in the Delaware District Court arising from Chemo’s ANDA filing with the FDA. On March 15, 2019, Keryx, Panion and Dr. Hsu filed a complaint for patent infringement against Mylan in the United States District Court for the Northern District of West Virginia arising from Mylan’s ANDA filing with the FDA. On April 18, 2019, Keryx, Panion and Dr. Hsu filed a motion with the Judicial Panel on Multidistrict Litigation seeking to consolidate these four cases in the Delaware

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District Court for pretrial proceedings. On March 29, 2019, April 2, 2019, and April 12, 2019, Keryx received Paragraph IV certification notice letters regarding ANDAs submitted to the FDA by Lupin Ltd., Watson Laboratories, Inc., or Watson, a wholly-owned, indirect subsidiary of Teva, and Par Pharmaceutical, Inc., or Par, an Endo International company, or Endo, respectively, requesting approval for generic versions of Auryxia tablets (210 mg iron per tablet). On May 10, 2019, Keryx, Panion and Dr. Hsu filed a complaint for patent infringement against Lupin Ltd. in the Delaware District Court arising from Lupin Ltd.’s ANDA filing with the FDA. On May 10, 2019, Keryx and Panion filed a complaint for patent infringement against Watson and the Teva Defendants, or the Watson Defendants, in the Delaware District Court arising from Watson’s ANDA filing with the FDA. On May 15, 2019, Keryx and Panion filed a complaint for patent infringement against the Watson Defendants in the United States District Court for the District of Nevada, or the Nevada District Court, from Watson’s ANDA filing with the FDA. On May 23, 2019, Keryx and Panion filed a complaint for patent infringement against Par in the Delaware District Court arising from Par’s ANDA filing with the FDA. On May 24, 2019, Keryx and Panion filed a complaint for patent infringement against Par, in the United States District Court for the Southern District of New York, or the Southern New York District Court, arising from Par’s ANDA filing with the FDA. On June 4, 2019, Keryx and Panion filed a notice of voluntary dismissal to dismiss the suit in the Nevada District Court in view of the Watson Defendants’ consent to venue of the Delaware District Court. On June 26, 2019, Keryx, Panion and Dr. Hsu notified the Judicial Panel on Multidistrict Litigation of additional actions in the Delaware District Court against the Lupin Defendants and the Watson Defendants. On July 31, 2019, the Judicial Panel on Multidistrict Litigation issued an order to consolidate all of our ANDA cases in Delaware District Court for pretrial proceedings. On August 26, 2019, Keryx filed an amended complaint against the Lupin Defendants in the Delaware District Court arising from the Lupin Defendants’ ANDA filings with the FDA. On September 19, 2019, the Delaware District court set a trial date for February 8, 2021.

On July 22, 2019, Keryx received from Teva a supplemental Paragraph IV certification notice letter regarding its ANDA. On July 22, 2019, Keryx received from Watson a supplemental Paragraph IV certification notice letter regarding its ANDA. On July 31, 2019, Keryx received from Lupin a supplemental Paragraph IV certification notice letter regarding its ANDA. On July 31, 2019, Keryx received from Lupin Ltd. a supplemental Paragraph IV certification notice letter regarding its ANDA. On September 17, 2019, Keryx received from Par a supplemental Paragraph IV certification notice letter regarding its ANDA. On October 16, 2019, Keryx received from Mylan a supplemental Paragraph IV certification notice letter regarding its ANDA.  On May 14, 2020, Keryx received from Chemo a supplemental Paragraph IV certification notice letter regarding its ANDA.

On April 27, 2020, the Delaware District Court conducted a Markman hearing concerning certain claim construction issues with respect to four Orange Book-listed patents, and issued an order in favor of Keryx.

On August 2, 2019, Keryx and Panion entered into a settlement and license agreement with Par resolving patent litigation brought by Keryx and Panion in response to Par’s ANDA seeking approval to market a generic version of Auryxia tablets prior to the expiration of the applicable patents. Pursuant to the terms of the settlement, Keryx and Panion will grant Par a license to market a generic version of Auryxia in the United States beginning on March 20, 2025 (subject to FDA approval), or earlier under certain circumstances customary for settlement agreements of this nature. Additionally, in accordance with the agreement, the parties will terminate all ongoing litigation between Keryx and Panion and Par regarding Auryxia patents pending in the Delaware District Court and the Southern New York District Court. The settlement and license agreement is confidential and subject to review by the U.S. Federal Trade Commission and the U.S. Department of Justice. On August 5, 2019, the parties filed a request to stay the litigation pending a review of the settlement and license agreement by these regulatory authorities. On September 6, 2019 and September 9, 2019, the Southern New York District Court and the Delaware District Court, respectively, entered a stipulation and order of dismissal filed by the parties to terminate the actions against Par.

On April 30, 2020, Keryx and Panion entered into a settlement and license agreement with Teva and Watson resolving patent litigation brought by Keryx and Panion in response to Teva and Watson’s ANDAs seeking approval to market a generic version of Auryxia tablets prior to the expiration of the applicable patents. Pursuant to the terms of the settlement, Keryx and Panion will grant Teva and Watson a license to market a generic version of Auryxia in the United States beginning on March 20, 2025 (subject to FDA approval), or earlier under certain circumstances customary for settlement agreements of this nature. Additionally, in accordance with the agreement, the parties will terminate all ongoing litigation between Keryx and Panion and Watson and Teva regarding Auryxia patents pending in the Delaware District Court. The settlement and license agreement is confidential and subject to review by the U.S. Federal Trade Commission and the U.S. Department of Justice. On May 4, 2020, the Delaware District Court entered a stipulation and order of dismissal filed by the parties to terminate the action against Teva and Watson.

As a result of the timely filing of these lawsuits against the Lupin Defendants, the Chemo Defendants and Mylan in accordance with the relevant statute, a 30-month stay of approval was imposed by the FDA on Lupin's ANDA, Lupin Ltd.'s ANDA, Chemo’s ANDA and Mylan’s ANDA, absent an earlier judgment by the court in each of these lawsuits finding the patents at issue invalid, unenforceable or not infringed. We and the other plaintiffs in each of these lawsuits are seeking, among other relief, an order that the effective date of FDA approval of the ANDA be a date no earlier than the expiration of each of the

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patents at issue and equitable relief enjoining the Lupin Defendants, the Chemo Defendants and Mylan from infringing these patents.

CMS Litigation

On October 15, 2019, we filed a complaint in the United States District Court for the District of Massachusetts, or the Massachusetts District Court, against Centers for Medicare & Medicaid Services, or CMS, the U.S. Department of Health and Human Services, Alex M. Azar II in his official capacity as Secretary of Health and Human Services, and Seema Verma in her official capacity as administrator for CMS challenging CMS’s decision that Auryxia would no longer be covered by Medicare for the treatment of iron deficiency anemia, or IDA, in adult patients with CKD not on dialysis, or the IDA Indication, and CMS’s related decision that imposed a prior authorization requirement for Auryxia in the treatment of adult patients with CKD on dialysis, or the Hyperphosphatemia Indication. On October 29, 2019, we filed a motion for a preliminary injunction asking the court to provide relief while the lawsuit is pending, specifically, to restore coverage of Auryxia for the IDA Indication, and to remove the prior authorization requirement for Auryxia for the Hyperphosphatemia Indication. In the alternative, we filed a motion for summary judgment with the court asking it to decide the case on the merits. On February 4, 2020, the court denied our request for a preliminary injunction. We filed an expedited appeal with the Court of Appeals for the First Circuit challenging the district court’s denial of our motion for a preliminary injunction. The appeal is currently pending, and oral argument is scheduled for August 14, 2020.

Shareholder Litigation Relating to Auryxia Supply

Four putative class action lawsuits were filed against Keryx Biopharmaceuticals, Inc., or Keryx, and certain of its former officers (Gregory P. Madison, Scott A. Holmes, Ron Bentsur, and James Oliviero) and consolidated in the Massachusetts District Court, captioned Karth v. Keryx Biopharmaceuticals, Inc., et al. (filed October 26, 2016, with an amended complaint filed on February 27, 2017). Plaintiff sought to represent all stockholders who purchased shares of Keryx common stock between May 8, 2013 and August 1, 2016. The complaint alleges that Keryx and the named individual defendants violated Sections 10(b) and/or 20(a) of the Securities Exchange Act of 1934, as amended, or the Exchange Act, and Rule 10b-5 promulgated thereunder by making allegedly false and/or misleading statements concerning Keryx, its supplier relationships, and future prospects, and that the allegedly misleading statements were not made known to the market until Keryx’s August 1, 2016 announcement of an interruption in its supply of Auryxia. By order dated July 19, 2018, the Massachusetts District Court granted in part and denied in part the defendants’ motion to dismiss the complaint. On February 27, 2019, defendants filed a motion for judgment on the pleadings. On April 30, 2019, plaintiff filed a motion to further amend his complaint, and also moved for class certification. The Massachusetts District Court heard oral argument on the motions for judgment on the pleadings and class certification on June 19, 2019.

On September 23, 2019, the Massachusetts District Court issued a Memorandum and Order denying plaintiff’s motion for class certification, granting defendants’ motion for judgment on the pleadings, and denying plaintiff’s motion for leave to further amend his Complaint. That same day, the Massachusetts District Court entered a final judgment in favor of defendants on all claims. On September 24, 2019, plaintiff filed a notice of appeal. The parties completed appellate briefing on May 19, 2020, and the First Circuit Court of Appeals has set oral argument for September 15, 2020.

Two stockholder derivative complaints also were filed on December 16, 2016 against Keryx and certain of its former officers (Gregory P. Madison, Scott A. Holmes, Ron Bentsur and James Oliviero) certain of its former directors (Kevin J. Cameron, Daniel P. Regan, Steven C. Gilman, Michael Rogers Michael P. Tarnok, Joseph Feczko, Jack Kaye Wyche Fowler, Jr. and John P. Butler), some of whom are current directors and officers of ours, in the Superior Court of Massachusetts, one captioned Venkat Vara Prasad Malledi v. Keryx Biopharmaceuticals, Inc., et al., and one captioned James Anderson v. Keryx Biopharmaceuticals, Inc., et al. Each of these two complaints generally alleges breach of fiduciary duty, unjust enrichment, abuse of control, mismanagement and corporate waste. On June 27, 2017, the Superior Court of Massachusetts granted the parties’ motion to consolidate and stay the derivative litigations, and that stay remains in effect. All of the complaints seek unspecified damages, interest, attorneys’ fees, and other costs. It is expected that such complaints would be dismissed if the above-mentioned ruling of the Massachusetts District Court entering judgment for the defendants in the case brought under the securities laws stands; however, as discussed above, we are awaiting the outcome of the appeal of that judgment.

Other Matters

On June 28, 2018, we entered into an Agreement and Plan of Merger with Keryx and Alpha Therapeutics Merger Sub, Inc., or the Merger Sub, pursuant to which the Merger Sub would merge with and into Keryx, with Keryx becoming a wholly owned subsidiary of ours, or the Merger. On December 12, 2018, we completed the Merger. In October and November 2018, four purported shareholders of Keryx filed four separate putative class actions, or the Merger Securities Actions, against Keryx, a former officer and director of Keryx (Jodie P. Morrison), former directors of Keryx (Kevin J. Cameron, Mark J. Enyedy, Steven

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C. Gilman, Michael T. Heffernan, Daniel P. Regan and Michael Rogers, some of whom are current members of our Board of Directors), and, with respect to the Rosenblatt action discussed below, the Merger Sub and Akebia, challenging the disclosures made in connection with the Merger.

Three of the Merger Securities Actions were filed in the Delaware District Court: Corwin v. Keryx Biopharmaceuticals, Inc., et al. (filed October 16, 2018); Van Hulst v. Keryx Biopharmaceuticals, Inc., et al. (filed October 24, 2018); and Andreula v. Keryx Biopharmaceuticals, Inc., et al. (filed November 1, 2018). The fourth Merger Securities Action was filed in the Massachusetts District Court: Rosenblatt v. Keryx Biopharmaceuticals, Inc., et al. (filed October 23, 2018). On February 19, 2019, the plaintiff in the Rosenblatt action filed a notice of voluntary dismissal of the action without prejudice. On March 27, 2019, the plaintiff in the Van Hulst action filed a notice of voluntary dismissal of the action without prejudice.

On April 2, 2019, the Delaware District Court granted Abraham Kiswani, a member of the putative class in both the Andreula and Corwin actions, and plaintiff John Andreula’s motion to consolidate the remaining two Merger Securities Actions pending in the Delaware District Court and consolidated the Corwin and Andreula cases under the caption In re Keryx Biopharmaceuticals, Inc., or the Consolidated Action. The Delaware District Court also appointed Kiswani and plaintiff Andreula as lead plaintiffs for the Consolidated Action. On June 3, 2019, the lead plaintiffs filed a consolidated amended complaint in the Consolidated Action, or the Consolidated Complaint. The Consolidated Complaint generally alleged that the registration statement filed in connection with the Merger contained allegedly false and misleading statements or failed to disclose certain allegedly material information in violation of Section 14(a) and 20(a) of the Securities Exchange Act of 1934, as amended, or the Exchange Act, and Rule 14a-9 promulgated thereunder. The alleged misstatements or omissions related to (i) certain financial projections for Keryx and Akebia and certain financial analyses performed by our advisors and (ii) any alleged negotiations that may have taken place regarding the conversion of certain convertible notes of Keryx in connection with the Merger. The Consolidated Complaint sought compensatory and/or rescissory damages, a declaration that the defendants violated Sections 14(a) and 20(a) of the Exchange Act and Rule 14a-9 thereunder, and an award of lead plaintiffs’ costs, including reasonable allowance for attorneys’ fees and experts’ fees. The defendants in the Consolidated Action moved to dismiss the Consolidated Complaint in its entirety and with prejudice on August 2, 2019. On April 15, 2020, the Delaware District Court granted the defendants’ motion and dismissed the Consolidated Action in its entirety. On July 2, 2020, lead plaintiffs filed a second consolidated amended complaint, or the Second Consolidated Complaint. The Second Consolidated Complaint (i) asserts the same claims under the Exchange Act as the Consolidated Complaint, (ii) names the same defendants as the Consolidated Complaint, (iii) seeks the same relief as the Consolidated Complaint and (iv) as with the Consolidated Complaint, challenges as false or misleading alleged misstatements or omissions related to certain financial projections for Keryx and Akebia and certain financial analyses performed by our advisors.

On December 10, 2018, a stockholder of Keryx, Michael J. Donnelly, filed a complaint against Keryx pursuant to Section 220 of the Delaware General Corporation Law in the Delaware Court of Chancery, captioned Donnelly v. Keryx Biopharmaceuticals, Inc., or the Donnelly Action. The Donnelly Action sought inspection of various Keryx books and records, purportedly to investigate “possible wrongdoing,” in connection with Keryx’s negotiation and approval of the Merger, as well as the independence of former members of Keryx’s Board of Directors, some of whom are current members of our Board of Directors. In addition to the production of books and records, the Donnelly Action sought costs and expenses incurred in the action, including reasonable attorneys’ fees. On January 31, 2019, Keryx answered the complaint in the Donnelly Action. The Delaware Court of Chancery entered a scheduling order to govern the Donnelly Action on March 28, 2019. The trial for the Donnelly Action took place on July 10, 2019. On October 24, 2019, the Delaware Chancery Court issued a written decision granting inspection, denying the plaintiff’s request for costs and expenses, and directing the parties to confer on the proper scope of the inspection.

We deny any allegations of wrongdoing and intend to continue vigorously defending against the shareholder lawsuits described in this Legal Proceedings section. There is no assurance, however, that we will be successful in the defense of these lawsuits, or any associated appeals, or that insurance will be available or adequate to fund any settlement or judgment or the litigation costs of these actions. Moreover, we are unable to predict the outcome or reasonably estimate a range of possible losses at this time. A resolution of these lawsuits in a manner adverse to us, however, could have a material effect on our financial position and results of operations in the period in which a particular lawsuit is resolved.

Item 1A. Risk Factors.

We face a variety of risks and uncertainties in our business. Additional risks and uncertainties not presently known to us or that we currently believe to be immaterial may also become important factors that affect our business. If any of the following risks occurs, our business, financial statements and future growth prospects could be materially and adversely affected.

Risks Related to the COVID-19 Pandemic

Our business has been and may continue to be, directly or indirectly, adversely affected by the recent COVID-19 pandemic.

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Since being reported in 2019, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), or COVID-19, has spread to every state in the United States and to multiple countries, including those in which our patients reside and in which we, the healthcare providers with whom we interact, our partners, our contract research organizations, or CROs, our contract manufacturing organizations, or CMOs, and our other vendors operate. On March 11, 2020, the World Health Organization declared COVID-19 a pandemic. The pandemic has continued to have adverse effects on financial markets, general commercial activity and the world economy.

In response to the pandemic, on March 13, 2020, the United States declared a national emergency, and federal, state, local and foreign governments have put in place, quarantines, executive orders, shelter-in-place orders and other restrictions in order to control the spread of the disease. During the second quarter of 2020, certain states, countries, and businesses had begun to ease restrictions that were in place earlier. Recently, however, viral infections have begun to increase again, resulting in the resumption of restrictions. Such orders or restrictions, or the perception that such orders or restrictions could occur or re-occur, have resulted in business closures, work stoppages, slowdowns and delays, work-from-home policies, travel restrictions, and cancellation or postponement of events, among other effects that have and may continue to negatively impact productivity and disrupt our operations and those of the healthcare providers with whom we interact, our partners, our CROs, our CMOs and our other vendors. The majority of our office-based employees have been working from home since March 13, 2020 and are not expected to return to the office before the end of 2020. As states re-open, we have permitted our customer-facing employees, including the members of our sales force, to begin in-person interactions with healthcare providers, including dialysis centers and hospitals, where appropriate and permissible. However, healthcare facilities have continued, or begun again, to restrict access for non-patients, including the members of our sales force. For example, DaVita, Inc., or DaVita, and Fresenius Medical Care, or Fresenius, which account for the vast majority of the dialysis population in the United States, have restricted access to their clinics. As a result, we continue to primarily engage with healthcare providers and other customers virtually, where possible. The restrictions on our customer-facing employees' in-person interactions with healthcare providers could negatively impact our access to healthcare providers and, ultimately, our sales. In addition, if the pandemic worsens or there is a resurgence of the pandemic in the United States, sales of Auryxia may be impacted, which, in turn, could have a material adverse effect on our business, results of operations, and financial condition. While most of our office-based operations can be performed remotely, there is no guarantee that we will be as effective while working remotely because our team is dispersed, many employees may have additional personal needs to attend to (such as looking after children as a result of school closures or family members who may become sick), and employees may become sick themselves and be unable to work. Further, our increased reliance on remote access to our information systems increases our exposure to potential cybersecurity breaches.

Moreover, our future success and profitability substantially depends on the management skills of our executives and certain other key employees. The unanticipated loss or unavailability of key employees due to the pandemic could harm our ability to operate our business or execute our business strategy. We may not be successful in finding and integrating suitable successors in the event of key employee loss or unavailability.

In addition, the pandemic may result in disruptions to or closures of CMO facilities and other vendors in our supply chain on which we rely for the supply of our product and product candidates, which could lead to delays or disruptions in supply and an impact on our inventory reserves, including an increase in inventory write-offs due to expiry.

We continue to expect the top-line data readout of our PRO₂TECT studies in early September 2020, as previously disclosed; however, the pandemic has resulted in closures of clinical trial sites on which we rely for the completion of certain other clinical trials and may delay enrollment of certain planned and ongoing clinical trials. Further, the pandemic could also potentially affect the business of the U.S. Food and Drug Administration, or FDA, the European Medicines Agency, or the EMA, the Japanese Pharmaceuticals and Medical Devices Agency, or the PMDA, or other governmental authorities, which could result in delays in meetings, reviews and approvals relating to our products or product candidates. Any decision by the FDA, EMA, PMDA or other governmental authorities to delay meeting with us or our collaboration partners in light of COVID-19 could have a material adverse effect on clinical trials of our product candidates or on our efforts to obtain marketing approvals for our product candidates, which could increase our operating expenses and have a material adverse effect on our financial results, including the timing and amount of future regulatory milestones we could receive from our partners.

If we or any of the third parties with whom we engage, including our collaboration partners, were to experience shutdowns, delays or other business disruptions, our ability to conduct our business in the manner and on the timelines presently planned could be materially and negatively impacted, which could have a material adverse effect on our business and our financial results.

The pandemic has already caused significant disruptions in the financial markets, and may continue to cause such disruptions, that could impact our ability to raise additional funds and has also impacted, and may continue to impact, the volatility of our stock price and trading in our stock. Moreover, it is possible the pandemic will significantly impact economies worldwide,

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which could result in adverse effects on our business and operations. Even after the COVID-19 pandemic has been contained or mitigated, we may continue to experience adverse impacts to our business as a result of any economic recession or depression that has occurred or may occur in the future.

The global impact of COVID-19 continues to rapidly evolve, and we will continue to monitor the situation closely. In particular, areas we are monitoring include possible COVID-related changes in our commercial revenue payer mix, overall product sales, and reserves and allowances, as well as negative trends that could indicate goodwill, intangible assets, and other assets to be impaired. The extent to which COVID-19 impacts our business will depend on future developments, which are highly uncertain and cannot be predicted, including new information which may emerge concerning the severity of COVID-19 and the actions to contain COVID-19 or treat its impact, among others.

Risks Related to our Financial Position and Need for Additional Capital

We have incurred significant losses since our inception, and anticipate that we will continue to incur significant losses and cannot guarantee when, if ever, we will become profitable or attain positive cash flows.

Investment in pharmaceutical product development and commercialization is highly speculative because it entails upfront capital expenditures and significant risk that a product candidate will fail to gain marketing approval or that an approved product will not be commercially viable. Since our inception, we have devoted most of our resources to research and development, including our preclinical and clinical development activities and, following the merger, or the Merger, whereby Keryx Biopharmaceuticals, Inc., or Keryx, became a wholly owned subsidiary of ours, commercialization. We have financed our operations primarily through sales of equity securities, our strategic collaborations and, following the Merger, product revenues and debt. Prior to the Merger, we had no products approved for commercial sale and had not generated any revenue from the sale of products. We are not currently profitable and have incurred net losses each year since our inception, including net losses of $236.5 million for the six months ended June 30, 2020. As of June 30, 2020, we had an accumulated deficit of $1.0 billion. We cannot guarantee when, if ever, we will become profitable. Our ability to generate product revenue and achieve profitability depends significantly on our success in many areas, including the following:

•developing, commercializing and marketing Auryxia, vadadustat, if approved, or any other product or product candidate, including those that may be in-licensed or acquired;

•completing preclinical and clinical development of our product candidates;

•seeking and obtaining marketing approvals for our product candidates after completion of clinical studies and the timing of such approvals, and maintaining marketing approvals for Auryxia or any other product;

•developing sustainable and scalable manufacturing processes for Auryxia, vadadustat and any other product or product candidate, including those that may be in-licensed or acquired;

•establishing and maintaining supply and manufacturing relationships with third parties that can provide adequate products that are compliant with good manufacturing practices, or GMPs, and services to support the clinical development and the market demand for our products and product candidates, including those that may be in-licensed or acquired;

•launching and commercializing our product candidates, if approved, either directly or with a collaborator or distributor;

•obtaining sufficient pricing and reimbursement for Auryxia, vadadustat and any other product or product candidate, including those that may be in-licensed or acquired, from private and governmental payors;

•obtaining market acceptance of Auryxia, vadadustat and any other product candidate, including those that may be in-licensed or acquired;

•the size of any market in which Auryxia, vadadustat and any other product or product candidate, including those that may be in-licensed or acquired, receives approval and obtaining adequate market share in those markets;

•addressing any competing products;

•identifying, assessing, acquiring, in-licensing and/or developing new product candidates;

•negotiating favorable terms in any transaction into which we may enter, including collaboration, merger, acquisition and licensing arrangements;

•maintaining, protecting and expanding our portfolio of intellectual property rights, including patents, trade secrets and know-how;

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•integrating following the Merger; and

•attracting, hiring and retaining qualified personnel.

We expect to continue to incur significant expenses and operating losses for the foreseeable future. The amount of our future net losses will depend, in part, on the rate of our future expenditures, and our financial position will depend, in part, on revenue from commercial products, and our ability to obtain additional funding. We expect to continue to incur significant expenses if and as we:

•conduct our development program of vadadustat for the treatment of anemia due to chronic kidney disease, or CKD, including PRO₂TECT and other ongoing or planned studies with respect to vadadustat, and develop plans for and conduct the preclinical and clinical development of any other potential product candidates;

•continue our commercialization activities for Auryxia and plan for the commercialization of vadadustat, if approved, and any other product or product candidate, including those that may be in-licensed or acquired;

•continue our Merger-related integration activities;

•seek marketing approvals for our product candidates that successfully complete clinical studies, and maintain marketing approvals for Auryxia and any product candidate for which we obtain marketing approval, including complying with any post-marketing regulatory requirements;

•have our product candidates manufactured for clinical trials and for commercial sale;

•initiate any post-marketing approval studies, Phase 4 studies or any other clinical trials for Auryxia or any other product, including those that may be in-licensed or acquired;

•seek to discover additional product candidates;

•engage in transactions, including strategic, merger, collaboration, acquisition and licensing transactions, pursuant to which we would market and develop commercial products, or develop and commercialize other product candidates and technologies;

•make royalty, milestone or other payments under our license agreements and any future license agreements;

•maintain, protect and expand our intellectual property portfolio;

•attract and retain skilled personnel;

•continue to create additional infrastructure and expend additional resources to support our operations as a public company, including any additional infrastructure and resources necessary to support the transition from our prior status as an emerging growth company; and

•experience any delays or encounter issues with any of the above.

We also could be forced to expend significant resources in our legal proceedings, as described under Part II, Item 1. Legal Proceedings, or any other such legal proceedings brought by or against us in the future.

Because of the numerous risks and uncertainties associated with pharmaceutical product development and commercialization, we are unable to accurately predict the timing or amount of increased expenses. The net losses we incur may fluctuate significantly from quarter to quarter and year to year, such that a period-to-period comparison of our results of operations may not be a good indication of our future performance. In any particular quarter, the progress of our clinical development and our operating results could be below the expectations of securities analysts or investors, which could cause our stock price to decline.

Even if we succeed in receiving marketing approval for and are able to commercialize vadadustat, we will continue to incur substantial research and development and other expenditures to develop and market, if approved, any other product candidates as well as any costs relating to continued commercialization and post-marketing requirements for Auryxia, vadadustat and any other products or product candidates that may receive marketing approval, including those that may be in-licensed or acquired. Our prior losses and expected future losses have had and will continue to have an adverse effect on our stockholders’ equity and working capital.

Our expenses could increase beyond expectations if we are required by the FDA, the EMA, or other regulatory authorities, or if we otherwise believe it is necessary, to change our manufacturing processes or assays, to amend or replace our study protocols, to repeat any of our clinical trials, to perform studies in addition to, different from or larger than those currently expected, or if there are any delays in completing our clinical trials or the development of any of our product candidates. Even if our product

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candidates are approved for commercial sale, we anticipate incurring significant costs associated with commercialization. In addition, our ability to generate revenue would be negatively affected if the size of our addressable patient population is not as significant as we estimate, the indication approved by regulatory authorities is narrower than we expect, or the patient population for treatment is narrowed by competition, physician choice, coverage or reimbursement, or payor or treatment guidelines. Even though we generate product revenue from Auryxia and may generate revenues from the sale of any products or product candidates that may be approved in the future, including those that may be in-licensed or acquired, we may never generate revenue that is significant enough to become and remain profitable, and we may need to obtain additional funding to continue operations.

We will require substantial additional financing to achieve our goals. A failure to obtain this necessary capital when needed could force us to delay, limit, reduce or terminate our product development or commercialization efforts.

As of June 30, 2020, our cash and cash equivalents and available for sale securities were $295.3 million. We expect to continue to expend substantial amounts for the foreseeable future continuing the commercialization of Auryxia and developing and commercializing vadadustat, if approved, and any other products or product candidates, including those that may be in-licensed or acquired. These expenditures will include costs associated with research and development, potentially obtaining marketing approvals and having our products manufactured, as well as marketing and selling products approved for sale, if any. In addition, other unanticipated costs may arise, including as a result of our decision to include certain elements in our development programs. Because the outcome of our current and anticipated clinical trials is highly uncertain, we cannot reasonably estimate the actual amount of funding necessary to successfully complete the development and commercialization of our product candidates. Our future capital requirements depend on many factors, including:

•significant costs associated with our global Phase 3 development program for vadadustat for the treatment of anemia due to CKD. As of June 30, 2020, we expect the remaining external aggregate contract research organization, or CRO, costs of PRO₂TECT and INNO₂VATE, which have enrolled 7,436 patients, to be in the range of $25.0 million to $35.0 million; the estimated costs for PRO₂TECT could increase significantly due to a number of factors, including detection of unexpected safety signals, modification of clinical trial protocols, performing other studies in support of the Phase 3 program, choosing to add third party vendors to support the program, and any other factor that could delay completion of PRO₂TECT; we reported top-line data for the INNO₂VATE studies in the second quarter of 2020, and we continue to incur costs to close out the program;

•the cost and timing of commercialization activities for Auryxia, vadadustat and any other products or product candidates, including those that may be in-licensed or acquired, if approved for marketing, including product manufacturing, marketing, sales and distribution costs;

•the results of our meetings with the FDA, the EMA and other regulatory authorities and any consequential effects, including on study design, study size and resulting operating costs;

•difficulties or delays in enrolling patients in our clinical trials;

•the timing of, and the costs involved in obtaining, and, if approved, maintaining marketing approvals for vadadustat and any other product candidates that we may develop or acquire, including to fund the preparation and filing of regulatory submissions with the FDA, the EMA and other regulatory authorities, if clinical studies are successful, and the costs of maintaining marketing approvals for Auryxia or any other product, including those that may be in-licensed or acquired;

•the cost of conducting clinical studies or any post-marketing approval studies, Phase 4 studies or any other clinical trials for Auryxia;

•the outcome of our efforts to obtain marketing approval for vadadustat in the United States, Europe and in other jurisdictions and any other product candidates, including those that may be in-licensed or acquired;

•the scope, progress, results and costs of additional preclinical, clinical, or other studies for vadadustat and Auryxia, as well as any studies of any other products or product candidates, including those that may be in-licensed or acquired;

•the cost of securing and validating commercial manufacturing of vadadustat and any other product candidates, including those that may be in-licensed or acquired, and maintaining our manufacturing arrangements for Auryxia or any other products, including those that may be in-licensed or acquired, or securing and validating additional arrangements;

•the costs involved in preparing, filing and prosecuting patent applications and maintaining, defending and enforcing our intellectual property rights, including litigation costs, and the outcome of such litigation;

•the costs involved in any legal proceedings to which we are a party;

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•Merger-related integration costs;

•our ability to attract, hire and retain qualified personnel; and

•the extent to which we engage in transactions, including collaboration, merger, acquisition and licensing transactions, pursuant to which we would develop and market commercial products, or develop other product candidates and technologies.

Furthermore, we expect to continue to incur additional costs associated with operating as a larger company following the Merger and as a public company, including any additional infrastructure and resources necessary to support the transition from our prior status as an emerging growth company. Accordingly, we will need to obtain substantial additional funding in connection with our continuing operations. If we are unable to raise capital when needed or on attractive terms, we could be forced to delay, reduce or eliminate our research and development programs or any future commercialization efforts.

We expect our cash resources to fund our current operating plan beyond the expected U.S. launch of our product candidate, vadadustat, assuming regulatory approval. We have based these estimates on assumptions that may prove to be wrong due to a variety of factors, including due to the effects of the COVID-19 pandemic, and we could use our available capital resources sooner than we currently expect. Furthermore, our development milestones may not be achieved, we may not receive the anticipated funding from our collaboration partners, and we may not secure other sources of financing. We expect to finance future cash needs through product revenue, public or private equity or debt transactions, payments from our collaborators, royalty transactions, strategic transactions, or a combination of these approaches. Even if we believe we have sufficient funds for our current or future operating plans, we may seek additional capital if market conditions are favorable or if we have specific strategic objectives.

Any additional fundraising efforts may divert our management’s attention away from their day-to-day activities, which may adversely affect our ability to develop and commercialize Auryxia, vadadustat and any other products or product candidates. Also, additional funds may not be available to us in sufficient amounts or on acceptable terms or at all. If we are unable to raise additional capital in sufficient amounts when needed or on terms acceptable to us, we may have to significantly delay, scale back or discontinue the development or commercialization of Auryxia, vadadustat and any other products or product candidates. Any of these events could significantly harm our business, financial condition and prospects.

Our obligations in connection with the Loan Agreement with Pharmakon could adversely affect our financial condition and restrict our operations.

We entered into a loan agreement, or the Loan Agreement, with funds managed by Pharmakon Advisors LP, or Pharmakon, pursuant to which term loans in an aggregate principal amount of $100.0 million, or the Term Loans, were made available to us in two tranches.  The first tranche of $80.0 million closed on November 25, 2019, and we have the option to draw down the second tranche of $20.0 million on or before December 31, 2020, subject to the satisfaction of customary conditions. See Note 11 to our unaudited condensed consolidated financial statements in Part I, Item 1. Financial Statements (unaudited) for additional information regarding our obligations under the Loan Agreement. Our Loan Agreement with Pharmakon contains affirmative and negative covenants applicable to us and our subsidiaries, including maintaining, on an annual basis, a minimum liquidity threshold starting in 2021, and on a quarterly basis, a minimum net sales threshold for Auryxia starting in the fourth quarter of 2020. Failure to maintain compliance with these covenants could result in an event of default under the Loan Agreement.

In the event there is an acceleration of our and certain of our subsidiaries’ liabilities under the Loan Agreement as a result of an event of default, we may not have sufficient funds or may be unable to arrange for additional financing to repay the liabilities or to make any accelerated payments, and Pharmakon could seek to enforce security interests in the collateral securing the Loan Agreement and Keryx’s guarantee of the Term Loans, which could have a material adverse effect on our business, financial condition and results of operations.

The Loan Agreement permits voluntary prepayment at any time in whole or in part, subject to prepayment premiums and make-whole premiums prior to certain dates. Upon a change of control, mandatory prepayment provisions require us to prepay the principal amount outstanding, the applicable prepayment premium and make-whole premium and accrued and unpaid interest.

In addition, our obligations in connection with the Loan Agreement could have additional significant adverse consequences, including, among other things:

•restricting our activities, including limitations on transferring certain of our assets, engaging in certain transactions, incurring certain additional indebtedness, creating certain liens, paying dividends or making certain other distributions and making certain investments;

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•limiting our flexibility in planning for, or reacting to, changes in our business and our industry;

•placing us at a competitive disadvantage compared to our competitors who have a smaller amount of debt or competitors with comparable debt at more favorable interest rates; and

•limiting our ability to borrow additional amounts for working capital, capital expenditures, research and development efforts, acquisitions, debt service requirements, execution of our business strategy and other purposes.

Any of these factors could materially and adversely affect our business, financial condition and results of operations.

Raising additional capital may cause dilution to our existing stockholders, restrict our operations or require us to relinquish rights to our product and product candidates on unfavorable terms to us.

We expect to finance our cash needs through product revenues, public or private equity or debt transactions, payments from our collaborators, royalty transactions, strategic transactions, or a combination of these approaches. To the extent that we raise additional capital through the sale of equity or convertible debt securities, the ownership interests of our common stockholders will be diluted, our fixed payment obligations may increase, any such securities may have rights senior to those of our common stock, and the terms may include liquidation or other preferences and anti-dilution protections that adversely affect the rights of our common stockholders. Debt financing, if available, may involve agreements that would restrict our operations and potentially impair our competitiveness, such as limitations on our ability to incur additional debt, make capital expenditures, declare dividends, acquire, sell or license intellectual property rights, and other operating restrictions that could adversely impact our ability to conduct our business. If we raise additional funds through royalty transactions, we may have to relinquish valuable rights to our portfolio and future revenue streams, and enter into agreements that would restrict our operations and strategic flexibility. If we raise additional funds through strategic transactions with third parties, we may have to do so at an earlier stage than otherwise would be desirable. In connection with any such strategic transactions, we may be required to relinquish valuable rights to our product and product candidates, future revenue streams or research programs or grant licenses on terms that are not favorable to us. If we are unable to raise additional funds when needed, we may not be able to pursue development and commercial activities related to expanded indications for current products and any additional products and product candidates, or grant rights to develop and market product candidates that we would otherwise prefer to develop and market ourselves.

We may engage in strategic transactions to acquire assets, businesses, or rights to products, product candidates or technologies or form collaborations or make investments in other companies or technologies that could harm our operating results, dilute our stockholders’ ownership, increase our debt, or cause us to incur significant expense.

As part of our business strategy, we may engage in additional strategic transactions to expand and diversify our portfolio, including through the acquisition of assets, businesses, or rights to products, product candidates or technologies or through strategic alliances or collaborations, similar to the Merger and our collaboration and license arrangements. We may not identify suitable strategic transactions, or complete such transactions in a timely manner, on a cost-effective basis, or at all. Moreover, we may devote resources to potential opportunities that are never completed or we may incorrectly judge the value or worth of such opportunities. Even if we successfully execute a strategic transaction, we may not be able to realize the anticipated benefits of such transaction, may incur additional debt or assume unknown or contingent liabilities in connection therewith, and may experience losses related to our investments in such transactions. Integration of an acquired company or assets into our existing business may not be successful and may disrupt ongoing operations, require the hiring of additional personnel and the implementation of additional internal systems and infrastructure, and require management resources that would otherwise focus on developing our existing business. Even if we are able to achieve the long-term benefits of a strategic transaction, our expenses and short-term costs may increase materially and adversely affect our liquidity. Any of the foregoing could have a detrimental effect on our business, results of operations and financial condition.

In addition, future transactions may entail numerous operational, financial and legal risks, including:

•incurrence of substantial debt, dilutive issuances of securities or depletion of cash to pay for acquisitions;

•exposure to known and unknown liabilities, including possible intellectual property infringement claims, violations of laws, tax liabilities and commercial disputes;

•higher than expected acquisition and integration costs;

•difficulty in integrating operations and personnel of any acquired business;

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•increased amortization expenses or, in the case of a write-down the value of acquired assets, impairment losses, such as the Auryxia intangible asset impairment in the second quarter of 2020 and corresponding adjustment to the estimated useful life of the developed product rights for Auryxia;

•impairment of relationships with key suppliers or customers of any acquired business due to changes in management and ownership;

•inability to retain personnel, customers, distributors, vendors and other business partners integral to an in-licensed or acquired product, product candidate or technology;

•potential failure of the due diligence processes to identify significant problems, liabilities or other shortcomings or challenges;

•entry into indications or markets in which we have no or limited direct prior development or commercial experience and where competitors in such markets have stronger market positions; and

•other challenges associated with managing an increasingly diversified business.

If we are unable to successfully manage any transaction in which we may engage, our ability to develop new products and continue to expand and diversify our portfolio may be limited.

Risks Related to our Merger with Keryx

We may fail to realize the anticipated benefits of our merger with Keryx, those benefits may take longer to realize than expected, and we may encounter significant integration difficulties and liabilities, which may have a material adverse effect on our business and financial position.

On December 12, 2018, we completed the Merger. There can be no assurance that we will realize the full benefit of the anticipated synergies and cost savings relating to the Merger or that these benefits will be realized within the expected time frames or at all. Our ability to realize the anticipated benefits of the Merger will depend, to a large extent, on our ability to continue to integrate our business and Keryx’s business and realize anticipated growth opportunities and synergies. If we are unable to successfully integrate the businesses, or integrate them in a timely fashion, we may face material adverse effects including, but not limited to (i) diversion of the attention of management and key personnel and potential disruption of our ongoing business, (ii) the loss of employees, (iii) challenges of managing a larger company, including challenges of conforming standards, controls, procedures and accounting and other policies and compensation structures, (iv) difficulties in achieving anticipated cost savings, (v) declines in our results of operations, financial condition or cash flows, (vi) a decline in the market price of our common stock, and (vii) potential liabilities, adverse consequences, increased expenses or other problems associated with our company following completion of the Merger. Many of these factors are outside of our control, and any one of them could result in increased costs, decreased expected revenues and further diversion of management time and energy, which could materially impact our business, financial statements and prospects.

In addition, following the Merger, we have become responsible for Keryx’s liabilities and obligations, including with respect to legal, financial, regulatory and compliance matters, including certain post-approval regulatory requirements with respect to Auryxia and obligations under collaboration, license, supply and manufacturing agreements. These obligations will result in additional cost and investment by us and, if we have underestimated the amount of these costs and investments or if we fail to satisfy any such obligations, we may not realize the anticipated benefits of the transaction. Also, due to the Merger and ongoing integration, we may forego or delay pursuit of other opportunities that may have proven to have greater commercial potential.

Further, it is possible that there may be unknown, contingent or other liabilities or problems that may arise in the future, the existence and/or magnitude of which we were previously unaware. Any such liabilities or problems could have an adverse effect on our business, financial condition or results of operations.

Lawsuits have been filed challenging the Merger and additional lawsuits may be filed in the future. Any monetary damages, or other adverse judgment could have a material adverse effect on us.

There was a putative class action lawsuit filed by purported Keryx shareholders challenging the disclosures made in connection with the Merger, which was dismissed in April 2020.  In addition, a stockholder of Keryx filed a complaint against Keryx pursuant to Section 220 of the Delaware General Corporation Law, which sought inspection of various Keryx books and records, purportedly to investigate “possible wrongdoing,” in connection with Keryx’s negotiation and approval of the Merger, as well as the independence of former members of Keryx’s Board of Directors (some of whom are current members of our Board of Directors). See Part II, Item 1. Legal Proceedings for further information relating to the lawsuits. Additional lawsuits arising out of the Merger may be filed in the future. We could be forced to expend significant resources in the defense of these lawsuits, including but not limited to, costs associated with the indemnification of Keryx and Akebia directors and officers, and

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the lawsuits, regardless of outcome, could have a negative effect on our reputation, stock price and results of operations. In addition, monetary damages or other adverse judgment would have a material adverse effect on our business and financial position.

Our financial statements include goodwill and an intangible asset as a result of the Merger. The intangible asset has become impaired and could become further impaired in the future under certain conditions. In addition, goodwill could become impaired in the future under certain conditions. Any potential future impairment of goodwill or intangible assets may significantly impact our results of operations and financial condition.

As of June 30, 2020, we had approximately $212.5 million of goodwill and a definite lived intangible asset from the Merger. In accordance with generally accepted accounting principles, or GAAP, we are required annually, or more frequently upon certain indicators of impairment, to review our estimates and assumptions underlying the fair value of our goodwill and our definite lived intangible assets when indicators of impairment are present. Events giving rise to impairment of goodwill or intangible assets are an inherent risk in the pharmaceutical industry and often cannot be predicted. Conditions that could indicate impairment and necessitate such a review include, but are not limited to, Auryxia’s commercial performance, our inability to execute on our strategic initiatives, the deterioration of our market capitalization such that it is significantly below our net book value, and a significant adverse change in legal factors, unexpected adverse business conditions, and an adverse action or assessment by a regulator. To the extent we conclude that goodwill and/or definite lived intangible assets have become impaired, we may be required to incur material write-offs relating to such impairment and any such write-offs could have a material impact on our future operating results and financial position. For example, in the second quarter of 2020, in connection with a routine business review, we reduced our short-term and long-term Auryxia revenue forecast. This reduction was primarily driven by the compounding impact of the September 2018 Centers for Medicare & Medicaid Services, or CMS, decision that rescinded Medicare Part D coverage of Auryxia for the treatment of iron deficiency anemia, or IDA, in adult patients with CKD not on dialysis, or the IDA Indication, and the related imposition by CMS of a prior authorization requirement for Auryxia for the control of serum phosphorus levels in adult patients with CKD on dialysis, or the Hyperphosphatemia Indication, or the CMS Decisions. As a result, we recorded an impairment charge of $115.5 million during the three months ended June 30, 2020, which was entirely allocated to our only intangible asset, the developed product rights for Auryxia, and made a corresponding adjustment to the estimated useful life of the developed product rights for Auryxia. The estimates, judgments and assumptions used in our impairment testing, and the results of our testing, are discussed in Note 9 to our unaudited condensed consolidated financial statements in Part I, Item 1. Financial Statements (unaudited). If these estimates, judgments and assumptions change in the future, including if the Auryxia asset group does not meet its current forecasted projections, additional impairment charges could be recorded in the future and additional corresponding adjustments may need to be made to the estimated useful life of the developed product rights for Auryxia, which could materially impact our financial position, certain of our material agreements, and our future operating results.

Risks Related to Commercialization

Our ability to successfully commercialize any approved product(s), including our ability to achieve their widespread market acceptance, is critical to the success of our business.

Our ability to generate significant product revenue will depend almost entirely on our ability to execute on our commercialization plans, the level of market adoption for, and the availability of and continued use of any approved product(s) by physicians, hospitals, dialysis clinics, wholesalers, patients, and/or healthcare payors, including government payors, consumers, managed care organizations, pharmacy benefit managers, and pharmacies. If we are not successful in commercializing any approved product(s), including achieving and maintaining an adequate level of market adoption, our profitability and our future business prospects will be adversely impacted. Market acceptance of any approved product(s) depends on a number of other factors, including:

•the availability of adequate coverage and reimbursement by third party payors and governmental authorities;

•the safety and efficacy of the product, as demonstrated in clinical trials and in the post-marketing setting;

•the prevalence and complications of the disease treated by the product;

•the clinical indications for which the product is approved and the product label approved by regulatory authorities, including any warnings or limitations that may be required on the label as a consequence of potential safety risks associated with the product;

•the countries in which marketing approvals are obtained;

•the claims we and our collaborators are able to make regarding the safety and efficacy of the product;

•the success of our physician and patient communications and education programs;

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•acceptance by physicians and patients of the product as a safe and effective treatment and the willingness of the target patient population to try new therapies and of physicians to prescribe new therapies;

•the cost, safety and efficacy of the product in relation to alternative treatments;

•the timing of receipt of marketing approvals and product launch relative to competing products and potential generic entrants;

•relative convenience and ease of administration;

•the prevalence and severity of adverse side effects;

•adverse publicity about our products or favorable or adverse publicity about competing products;

•the availability of discounts, rebates, and price concessions;

•the effectiveness of our and our collaborators’ sales, marketing and distribution efforts; and

•the restrictions on the use of the product together with other medications, if any.

Market acceptance is critical to our ability to generate significant product revenue. In addition, any product or product candidate, if approved and commercialized, may achieve only limited market acceptance or none at all. If any of our approved products is not accepted by the market to the extent that we expect, we may not be able to generate product revenue and our business would suffer.

Generic competitors are seeking approval of generic versions of Auryxia and the market entry of one or more generic competitors would limit Auryxia sales and have an adverse impact on our business and results of operation.

Although composition and use of Auryxia are currently claimed by 15 issued patents that are listed in the FDA’s Orange Book, we cannot assure that we will be successful in defending against third parties attempting to invalidate or design around our patents or assert that our patents are invalid or otherwise unenforceable or not infringed, or in competing against third parties introducing generic equivalents of Auryxia or any of our future products.

The Hatch-Waxman Act allows applicants seeking to market a generic equivalent of a drug that relies, in whole or in part, on the FDA’s prior approval of a patented brand name drug, to provide notice to the holder of the New Drug Application, or NDA, for the brand name drug of its application, called a Paragraph IV certification notice, if the applicant is seeking to market its product prior to the expiration of the patents with claims directed to the brand name drug. After the introduction of a generic competitor, a significant percentage of the prescriptions written for a product may be filled with the generic version, resulting in a loss in sales of the branded product. We have received Paragraph IV certification notice letters regarding Abbreviated New Drug Applications, or ANDAs, submitted to the FDA requesting approval for generic versions of Auryxia tablets (210 mg iron per tablet), have filed certain complaints for patent infringement relating to such ANDAs, and have entered into settlement and license agreements with certain such ANDA filers. See Part II, Item 1. Legal Proceedings for further information relating to the ANDAs, lawsuits and settlements. Although the United States District Court for the District of Delaware conducted a Markman hearing concerning certain claim construction issues with respect to four Orange Book-listed patents, and issued an order in favor of Keryx, we may not ultimately be successful in the ANDA litigation. Generic competition for Auryxia or any of our future products could have a material adverse effect on our sales, results of operations and financial condition.

In addition, litigation to enforce or defend intellectual property rights is complex, costly and involves significant management time. If our Orange Book-listed patents are successfully challenged by a third party and a generic version of Auryxia is approved and launched, revenue from Auryxia could decline significantly which would have a material adverse effect on our sales, results of operations and financial condition.

If we are unable to maintain sales, marketing and distribution capabilities or to enter into additional agreements with third parties, we may not be successful in commercializing any approved product(s).

In order to market Auryxia, we intend to continue to invest in sales and marketing, which will require substantial effort and significant management and financial resources. We will need to devote significant effort, in particular, to recruiting individuals with experience in the sales and marketing of pharmaceutical products. Competition for personnel with these skills is significant.

There are risks involved with maintaining our own sales, marketing and distribution capabilities, including the following:

•potential inability to recruit, train and retain adequate numbers of effective sales and marketing personnel;

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•potential inability of sales personnel to obtain access to physicians;

•potential lack of complementary products to be offered by sales personnel, which may put us at a competitive disadvantage relative to companies with more extensive product lines; and

•costs and expenses associated with maintaining our own sales and marketing organization.

If we are unable to maintain our own sales, marketing and distribution capabilities and our arrangements with third parties with respect to sales, marketing and distribution, or we are unsuccessful in entering into additional arrangements with third parties to sell, market and distribute or are unable to do so on terms that are favorable to us, we will not be successful in commercializing any approved product(s).

Coverage and reimbursement may be limited or unavailable in certain market segments for any approved product(s), which could make it difficult for us or our collaboration partners to sell any approved products profitably.

Market acceptance and sales of any approved products depends significantly on the availability of adequate coverage and reimbursement from third party payors and may be affected by existing and future healthcare reform measures. Government authorities, third party payors, and pharmacy benefit managers, or PBMs, decide which drugs they will cover, as well as establish formularies or implement other mechanisms to manage utilization of products and determine reimbursement levels. Coverage and reimbursement by a third-party payor or PBM may depend upon a number of factors, including the determination that use of a product is:

•a covered benefit under the health plan;

•safe, effective and medically necessary;

•appropriate for the specific patient; and

•cost effective.

Obtaining coverage and reimbursement approval for a product from a government or other third party payor is a time consuming and costly process that could require us to provide supporting scientific, clinical and cost-effectiveness data for the use of our products to the payor. In the United States, there are multiple government and private third party payors with varying coverage and reimbursement levels for pharmaceutical products, and the timing of commencement of reimbursement by a government payor is dependent on the assignment of codes via the Healthcare Common Procedure Coding System, which codes are assigned on a quarterly basis. Within Medicare, for oral drugs dispensed by pharmacies and also administered in facilities, coverage and reimbursement may vary depending on the setting. CMS, local Medicare administrative contractors, Medicare Part D plans and/or PBMs operating on behalf of Medicare Part D plans, may have some responsibility for determining the medical necessity of such drugs, and therefore coverage, for different patients. Different reimbursement methodologies may apply, and CMS may have some discretion in interpreting their application in certain settings.

As an oral drug, Auryxia is covered by Medicare only under Part D. In September 2018, CMS communicated to Medicare Part D sponsors that CMS does not consider Auryxia to be covered under Part D for the IDA Indication. CMS does, however, consider Auryxia to be a covered Part D drug for its other FDA-approved indication, the Hyperphosphatemia Indication. As a result, Part D sponsors require a prior authorization for all Auryxia prescriptions for Medicare beneficiaries to ensure that Auryxia is being used for the Part D covered indication. On October 15, 2019, we filed a complaint in the United States District Court for the District of Massachusetts against CMS and the U.S. Department of Health and Human Services, or HHS, challenging the CMS Decisions. On February 4, 2020, the court denied our request for a preliminary injunction. We filed an expedited appeal with the Court of Appeals for the First Circuit challenging the district court’s denial of our motion for a preliminary injunction. The appeal is currently pending. If we are unsuccessful in our efforts to obtain Part D coverage for the IDA Indication, our ability to commercialize Auryxia for this indication will continue to be adversely impacted. While we believe that the vast majority of the Part D prescriptions written for Auryxia today are for the Hyperphosphatemia Indication and therefore will continue to be covered by Part D plans with prior authorization, the CMS Decisions have had and may continue to have an adverse impact on market acceptance of Auryxia, sales of Auryxia for the Hyperphosphatemia Indication and the IDA Indication, and ultimately on the timing and number of prescriptions and Auryxia product revenue, and may influence physicians’ prescribing decisions. For example, in the second quarter of 2020, we reduced our short-term and long-term Auryxia revenue forecast, primarily driven by the compounding impact of the CMS Decisions. As a result, we recorded an impairment charge of $115.5 million to the Auryxia intangible asset during the three months ended June 30, 2020. Even if the CMS Decisions are ultimately reversed, the negative impact that they have had on the growth of sales of Auryxia for the Hyperphosphatemia Indication and the IDA Indication will continue, although less significantly than if the CMS Decisions are not reversed.

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Medicaid reimbursement of drugs varies by state. Private third party payor reimbursement policies also vary and may or may not be consistent with Medicare reimbursement methodologies. Manufacturers of outpatient prescription drugs may be required to provide discounts or rebates under government healthcare programs or to certain third party payors in order to obtain coverage of such products.

Additionally, we may be required to enter into contracts with third party payors and/or PBMs offering rebates or discounts on our products in order to obtain favorable formulary status. We may not be able to agree upon commercially reasonable terms with such third party payors or PBMs, or provide data sufficient to obtain favorable coverage and reimbursement for many reasons, including that we may be at a competitive disadvantage relative to companies with more extensive product lines. In addition, third party payors, PBMs and other entities that purchase our products may impose restrictions on our ability to raise prices for our products over time without incurring additional costs. We cannot be sure that coverage or adequate reimbursement will be available for our product or any of our potential future products. Even if we obtain coverage for any approved product, third party payors may not establish adequate reimbursement amounts, which may reduce the demand for our product and prompt us to have to reduce pricing for the product. If reimbursement is not available or is limited, we may not be able to commercialize certain of our products.

Furthermore, vadadustat was approved in Japan for the treatment of anemia due to CKD and will be marketed by MTPC in Japan under the trade name VAFSEO. The pricing and reimbursement strategy is a key component of MTPC's commercialization plans for VAFSEO in Japan. If MTPC is unable to successfully and timely conclude reimbursement, price approval or coverage processes and market VAFSEO in Japan, if coverage and reimbursement for VAFSEO is limited, or if coverage and reimbursement terms change, MTPC may not be able to, or may decide not to, commercialize VAFSEO in Japan.

If we are unable to obtain or maintain contracts with key distribution partners, our business could be materially harmed.

As disclosed in our Annual Report on Form 10-K for the year ended December 31, 2019, we had four distributors, Fresenius Medical Care Rx, McKesson Corporation, Cardinal Health, Inc. and Amerisource Bergen Drug Corporation, that, in the aggregate, accounted for a significant percentage of our gross accounts receivable as of December 31, 2019. If we are not able to maintain our contracts with these key distributors on favorable terms, on a timely basis or at all, or if there is any adverse change in one or more of these distributors’ business practices or financial condition, or such distributors’ end users’ prescribing practices or clinical protocols, it would adversely impact the market opportunity for Auryxia, our product revenues and operating results.

Further, if vadadustat is approved in the United States and included in the fixed reimbursement model for a bundle of dialysis services, or the bundle, we would be required to enter into contracts to supply vadadustat to specific dialysis providers, instead of through distributors, which we believe could be challenging. The dialysis market is unique and is dominated by two providers: DaVita and Fresenius, which account for a vast majority of the dialysis population in the United States. In May 2017, we entered into a license agreement, which was amended and restated in April 2019, pursuant to which we granted Vifor (International) Ltd., or Vifor Pharma, an exclusive license to sell vadadustat to Fresenius Kidney Care Group LLC, or FKC, and certain third party dialysis organizations, or the Third Party Dialysis Organizations, approved by us, in the United States. The license would be effective upon the following: FDA approval of vadadustat for anemia due to CKD in adult patients with the dialysis-dependent CKD, the earlier of CMS’s determination that vadadustat will be reimbursed using the Transitional Drug Add-On Payment Adjustment, or the TDAPA, and inclusion in the bundle, and a milestone payment by Vifor Pharma. Under this amended license agreement with Vifor Pharma, or the Vifor Agreement, FKC and the Third Party Dialysis Organizations are not obligated to utilize vadadustat in their U.S. clinics. In addition, even if FKC and the Third Party Dialysis Organizations choose to utilize vadadustat in their clinics in the United States, they are not restricted from utilizing other therapies for anemia due to CKD. The Vifor Agreement restricts us from directly supplying vadadustat to FKC or any other affiliate of Fresenius Medical Care North America and the Third Party Dialysis Organizations. The Vifor Agreement does not restrict us from entering into supply agreements with other dialysis clinics, such as DaVita; however, these dialysis clinics may choose not to contract with us for vadadustat or they may choose to contract with us for a limited supply of vadadustat. If vadadustat is approved and we are not able to maintain the Vifor Agreement or enter into a supply agreement with DaVita, our business may be materially harmed.

Although we currently believe it is likely that vadadustat, if approved, will be reimbursed using the TDAPA followed by reimbursement via the bundled reimbursement model, if vadadustat is neither reimbursed under the TDAPA nor the bundled reimbursement model, then the Vifor Agreement will not become effective, and patients would access vadadustat through contracts we negotiate with third party payors for reimbursement of vadadustat, which would be subject to the risks and uncertainties described above. Additionally, if there are updates to the TDAPA rule that decrease the basis for reimbursement or eligibility criteria during the transition period or if the TDAPA is eliminated, then our profitability may be adversely affected.

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In addition, we may be unable to sell vadadustat, if approved, to dialysis providers on a profitable basis if CMS significantly reduces the level of reimbursement for dialysis services and providers choose to use alternative therapies or look to negotiate their contracts with us. Our profitability may also be affected if our costs of production increase faster than increases in reimbursement levels. Adequate coverage and reimbursement of our products by government and private insurance plans are central to patient and provider acceptance of any products for which we receive marketing approval.

The successful commercialization of any approved product(s), will depend in part on the extent to which third party payors and government authorities establish adequate reimbursement levels and pricing policies.

Third party payors are increasingly attempting to contain healthcare costs by limiting both coverage and reimbursement levels for new drugs. As a result, significant uncertainty exists as to whether and how much reimbursement third party payors will provide for newly approved drugs which, in turn, will put downward pressure on the pricing of drugs.

Cost control initiatives may decrease coverage and payment levels for any drug and, in turn, the price that we will be able to charge and/or the volume of our sales. Certain third party payors require prior authorization for, or even refuse to provide, reimbursement for Auryxia, and others may do so in the future with respect to Auryxia, vadadustat and any of our other products or product candidates. In addition, certain third party payors require some form of prior authorization for the administration of ESAs for the treatment of anemia due to CKD within the non-dialysis patient population, and a similar prior authorization may be applicable to the HIF-PHI class for the treatment of anemia due to CKD within the non-dialysis patient population. Our business would be materially adversely affected if we are not able to receive approval for reimbursement from third party payors on a broad, timely or satisfactory basis; if reimbursement is subject to overly broad or restrictive prior authorization requirements; or if reimbursement is not maintained at satisfactory levels or becomes subject to prior authorization. We are unable to predict all changes to the coverage or reimbursement methodologies that will be applied by private or government payors.

In addition, in some countries, including member states of the European Union, or EU, the pricing of prescription pharmaceuticals is subject to governmental control. In these countries, pricing negotiations with governmental authorities can take a significant amount of time after receipt of marketing approval for a product. In addition, there can be considerable pressure by governments and other stakeholders on prices and reimbursement levels, including as part of cost containment measures. Political, economic and regulatory developments may further complicate pricing negotiations, and pricing negotiations may continue after reimbursement has been obtained. Reference pricing used by various EU member states and parallel distribution, or arbitrage between low-priced and high-priced member states, can further reduce prices, and in certain instances render commercialization in certain markets infeasible or disadvantageous from a financial perspective. In some countries, we or our collaborators may be required to conduct a clinical trial or other studies that compare the cost-effectiveness of our product and/or our product candidates to other available products in order to obtain or maintain reimbursement or pricing approval. Publication of discounts by third party payors or government authorities may lead to further pressure on the prices or reimbursement levels. If reimbursement of our products is unavailable or limited in scope or amount, or if pricing is set at unsatisfactory levels, the commercial launch of our product and/or product candidates could be delayed, possibly for lengthy periods of time, we or our collaborators may not launch at all in a particular country, we may not be able to recoup our investment in one or more product candidates, and there could be a material adverse effect on our business.

Recently, there has been considerable public and government scrutiny in the United States of pharmaceutical pricing and proposals to address the perceived high cost of pharmaceuticals. There have also been several recent state legislative efforts to address drug costs, which generally have focused on increasing transparency around drug costs or limiting drug prices or price increases. Adoption of new legislation at the federal or state level could affect demand for, or pricing of, our product candidates, if approved, and could diminish our ability to establish what we believe is a fair price for our products, ultimately diminishing our revenue for our products if they are approved.  

We face substantial competition, which may result in others discovering, developing or commercializing products before, or more successfully than, we do.

The development and commercialization of new drugs is highly competitive and subject to rapid and significant technological change. Our future success depends on our ability to demonstrate and maintain a competitive advantage with respect to the development and commercialization of our product and product candidates. Our objective is to continue to commercialize Auryxia and develop and commercialize new products with superior efficacy, convenience, tolerability and/or safety. In many cases, any approved products that we commercialize will compete with existing, market-leading products.  

Auryxia is competing in the hyperphosphatemia market in the United States with other FDA-approved phosphate binders such as Renagel® (sevelamer hydrochloride) and Renvela® (sevelamer carbonate), both marketed by Genzyme Corporation (a wholly-owned subsidiary of Sanofi), PhosLo® and Phoslyra® (calcium acetate), marketed by Fresenius Medical Care North

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America, Fosrenol® (lanthanum carbonate), marketed by Shire Pharmaceuticals Group plc, and Velphoro® (sucroferric oxyhydroxide), marketed by Fresenius Medical Care North America, as well as over-the-counter calcium carbonate products such as TUMS® and metal-based options such as aluminum, lanthanum and magnesium. Most of the phosphate binders listed above are now also available in generic forms. In addition, other agents are in development, including OPKO Health Inc.’s Alpharen™ Tablets (fermagate tablets) and Ardelyx, Inc.’s tenapanor, that may impact the market for Auryxia.

Auryxia is competing in the IDA market in the United States with over-the-counter oral iron, ferrous sulfate, other prescription oral iron formulations, including ferrous gluconate, ferrous fumerate, and polysaccharide iron complex, and intravenous iron formulations, including Feraheme® (ferumoxytol injection), Venofer® (iron sucrose injection), Ferrlicit® (sodium ferric gluconate complex in sucrose injection), Injectafer® (ferric carboxymaltose injection), and Triferic® (ferric pyrophosphate citrate).  

In addition, other new therapies for the treatment of IDA may impact the market for Auryxia, such as Shield Therapeutics’ Feraccru® (ferric maltol), which is available in Europe for the treatment of IDA and Accrufer® (ferric maltol), which is approved in the United States for the treatment of IDA.

Furthermore, Auryxia’s commercial opportunities may be reduced or eliminated if our competitors develop and market products that are less expensive, more effective or safer than Auryxia. Other companies have product candidates in various stages of pre-clinical or clinical development to treat diseases and complications of the diseases for which we are marketing Auryxia.

Drugs that may compete with vadadustat include Epogen® (epoetin alfa) and Aranesp® (darbepoetin alfa), both commercialized by Amgen, Procrit® (epoetin alfa) and Eprex® (epoetin alfa), commercialized by Johnson & Johnson in the United States and Europe, respectively, and Mircera® (methoxy PEG-epoetin beta), commercialized by Vifor Pharma in the United States and Roche Holding Ltd. outside the United States.

We and or our partners may also face competition from potential new anemia therapies. There are several other HIF-PHI product candidates in various stages of development for anemia indications that may be in direct competition with vadadustat if and when they are approved and launched commercially. These candidates are being developed by such companies as FibroGen, Japan Tobacco International, GlaxoSmithKline plc and Bayer HealthCare AG. FibroGen, together with its collaboration partners, Astellas Pharma Inc. and AstraZeneca PLC, is currently in global Phase 3 clinical development of its product candidate, roxadustat. The product has launched for the treatment of anemia of CKD in patients on dialysis, or DD-CKD, in Japan and both DD-CKD and for the treatment of anemia of CKD in patients not on dialysis, or NDD-CKD, in China. In January 2020, FibroGen announced the submission of an sNDA for marketing approval for roxadustat for NDD-CKD in Japan. FibroGen announced that the FDA has completed its filing review of its NDA for roxadustat for both DD-CKD and NDD-CKD and set a Prescription Drug User Fee Act date of December 20, 2020. In May 2020, they announced that their marketing authorization application for roxadustat in the European Union had been accepted. GlaxoSmithKline plc is currently in global Phase 3 clinical development of its product candidate, daprodustat. In June 2020, GlaxoSmithKline plc announced that daprodustat’s Japanese NDA has been approved for the treatment of CKD anemia in patients with stages 3-5 CKD, including patients on dialysis and not on dialysis. Bayer HealthCare AG and Japan Tobacco International have submitted NDAs for their product candidates for the treatment of renal anemia in Japan. In addition, certain companies are developing potential new therapies for renal-related diseases that could potentially reduce injectable ESA utilization and thus limit the market potential for vadadustat if they are approved and launched commercially. Other new therapies are in development for the treatment of conditions inclusive of renal anemia that may impact the market for anemia-targeted treatment.

A biosimilar is a biologic product that is approved based on demonstrating that it is highly similar to an existing, FDA-approved branded biologic product. The patents for the existing, branded biologic product must expire in a given market before biosimilars may enter that market without risk of being sued for patent infringement. In addition, an application for a biosimilar product cannot be approved by the FDA until 12 years after the existing, branded product was approved under a Biologics License Application, or BLA. The patents for epoetin alfa, an injectable ESA, expired in 2004 in the EU, and the remaining patents expired between 2012 and 2016 in the United States. Because injectable ESAs are biologic products, the introduction of biosimilars into the injectable ESA market in the United States will constitute additional competition for vadadustat if we are able to obtain approval for and commercially launch our product. Several biosimilar versions of injectable ESAs are available for sale in the EU. In the United States, Pfizer’s biosimilar version of injectable ESAs, Retacrit® (epoetin alfa-epbx), was approved by the FDA in May 2018 and launched in November 2018.

Many of our potential competitors have significantly greater financial, manufacturing, marketing, drug development, technical and human resources than we do. Large pharmaceutical companies, in particular, have extensive experience in clinical testing, obtaining marketing approvals, recruiting patients and manufacturing pharmaceutical products. Large and established companies such as Amgen and Roche, among others, compete in the market for drug products to treat kidney disease. In particular, these companies have greater experience and expertise in conducting preclinical testing and clinical trials, obtaining

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marketing approvals, manufacturing such products on a broad scale and marketing approved products. These companies also have significantly greater research and marketing capabilities than we do and may also have products that have been approved or are in late stages of development, and have collaborative arrangements in our target markets with leading companies and research institutions. Established pharmaceutical companies may also invest heavily to accelerate discovery and development of novel compounds or to in-license novel compounds that could make the product candidates that we are developing obsolete. Smaller and other early stage companies may also prove to be significant competitors. As a result of all of these factors, our competitors may succeed in obtaining patent protection and/or marketing approval, or discovering, developing and commercializing competitive products, before, or more effectively than, we do. If we are not able to compete effectively against potential competitors, our business will not grow and our financial condition and operations will suffer.  

The commercialization of Riona in Japan and our current and potential future efforts with respect to the development and commercialization of our products and product candidates outside of the United States subject us to a variety of risks associated with international operations, which could materially adversely affect our business.

Our Japanese sublicensee, Japan Tobacco, Inc., or JT, and its subsidiary, Torii Pharmaceutical Co., Ltd., or Torii, commercialize Riona, the trade name for ferric citrate hydrate in Japan, as an oral treatment for the improvement of hyperphosphatemia in patients with CKD, including DD-CKD and NDD-CKD in Japan. We also granted Otsuka Pharmaceutical Co. Ltd., or Otsuka, exclusive rights to commercialize vadadustat in Europe, China and certain other markets, subject to marketing approvals. In Japan and certain other countries in Asia, we granted Mitsubishi Tanabe Pharma Corporation, or MTPC, exclusive rights to commercialize vadadustat, which has been approved in Japan and will be marketed by MTPC in Japan under the trade name VAFSEO. We are also conducting our global Phase 3 development with respect to vadadustat for the treatment of anemia due to CKD. As a result of these and other activities, we are or may become subject to additional risks in developing and commercializing our product and product candidates outside the United States, including:

•political, regulatory, compliance and economic developments that could restrict our ability to manufacture, market and sell our products;

•changes in international medical reimbursement policies and programs;

•changes in healthcare policies of foreign jurisdictions;

•trade protection measures, including import or export licensing requirements and tariffs;

•our ability to develop relationships with qualified local distributors and trading companies;

•political and economic instability in particular foreign economies and markets;

•diminished protection of intellectual property in some countries outside of the United States;

•differing labor regulations and business practices;

•regulatory and compliance risks that relate to maintaining accurate information and control over sales and distributors’ and service providers’ activities that may fall within the purview of the U.S. Foreign Corrupt Practices Act, or FCPA, the UK Bribery Act or similar local regulation;

•compliance with the EU General Data Protection Regulation, or GDPR;

•economic weakness, including inflation, or political instability in particular foreign economies and markets;

•compliance with tax, employment, immigration and labor laws for employees living or traveling abroad;

•potentially negative consequences from changes in or interpretations of tax laws;

•foreign currency fluctuations, which could result in increased operating expenses and reduced revenues, and other obligations incident to doing business in another country;

•workforce uncertainty in countries where labor unrest is more common than in the United States;

•production shortages resulting from any events affecting raw material supply or manufacturing capabilities abroad; and

•business interruptions resulting from geopolitical actions, including war and terrorism or natural disasters including earthquakes, typhoons, floods and fires.

Any of these factors may, individually or as a group, have a material adverse effect on our business and results of operations. As and if we continue to expand our commercialization efforts, we may encounter new risks.

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Risks Related to the Clinical Development of Vadadustat and our Other Product Candidates

In addition to Auryxia, we will continue to depend heavily on the success of our product candidate, vadadustat, which is currently in Phase 3 development. Clinical drug development involves a lengthy and expensive process with an uncertain outcome. We will incur additional costs in connection with, and may experience delays in completing, or ultimately be unable to complete, the development and commercialization of vadadustat and any other product candidates.

The risk of failure in drug development is high. We depend heavily on the successful commercialization of Auryxia and the successful clinical development, marketing approval and commercialization of vadadustat in the United States and other jurisdictions, which may never occur. Before obtaining marketing approval from regulatory authorities for the sale of any product candidate, we must complete preclinical development and conduct extensive clinical trials to demonstrate the safety and efficacy of our product candidates in humans. Clinical trials are expensive, difficult to design and implement, can take several years to complete, and their outcomes are inherently uncertain. Failure can occur at any time during the clinical trial process. Further, the results of preclinical studies and early clinical trials of our product candidates may not be predictive of the results of later-stage clinical trials, interim results of a clinical trial do not necessarily predict final results, and results of Phase 3 clinical trials for one indication may not be predictive of results of Phase 3 clinical trials for another indication. For example, our positive INNO₂VATE Phase 3 data do not ensure that PRO₂TECT will demonstrate similar results. Moreover, preclinical and clinical data are often susceptible to varying interpretations and analyses, and many companies that have believed their product candidates performed satisfactorily in preclinical studies and clinical trials have nonetheless failed to obtain marketing approval of their product candidates. It is impossible to predict when or if any of our product candidates will prove effective or safe in humans or will receive marketing approval.

We may experience numerous unforeseen events during, or as a result of, clinical trials that could delay or prevent our ability to receive or maintain marketing approval or commercialize our product candidates. Our clinical trials may take longer to complete than currently anticipated, or may be delayed, suspended, required to be repeated, prematurely terminated or may not successfully demonstrate safety and/or efficacy for a variety of other reasons, such as:

•the costs are greater than we anticipate;

•the number of patients required for clinical trials of our product candidates may be larger than we anticipate;

•enrollment in our clinical trials may be slower than we anticipate, or participants may drop out of these clinical trials at a higher rate than we anticipate;

•our third party contractors, such as our CROs, may fail to comply with regulatory requirements, perform effectively, or meet their contractual obligations to us in a timely manner, or at all, or we may fail to communicate effectively or provide the appropriate level of oversight of such third party contractors;

•the supply or quality of our starting materials, drug substance and drug product necessary to conduct clinical trials of our product candidates may be insufficient or inadequate;

•regulators, independent data monitoring committees, or IDMCs, institutional review boards, or IRBs, safety committees, or ethics committees, may require that we suspend or terminate our clinical trials for various reasons, including noncompliance with regulatory requirements, unforeseen safety issues or adverse side effects, failure to demonstrate a benefit from using our product candidate, or a finding that the participants are being exposed to unacceptable health risks;

•clinical trials of our product candidates may produce negative or inconclusive results, and we may decide, or regulators may require us, to conduct additional clinical trials, repeat a clinical trial or abandon product development programs;

•lack of adequate funding to continue a clinical trial, including unforeseen costs due to enrollment delays, requirements to conduct additional clinical trials or repeat a clinical trial and increased expenses associated with the services of our CROs and other third parties;

•failure to initiate, delay of or failure to complete a clinical trial as a result of an Investigational New Drug application, or IND, being placed on clinical hold by the FDA, the EMA, the PMDA, or other regulatory authorities, or for other reasons;

•we may determine to change or expand a clinical trial, including after it has begun;

•clinical trial sites and investigators deviating from the clinical protocol, failing to conduct the trial in accordance with regulatory requirements, or dropping out of a trial, or failure by us or our CROs to communicate effectively or provide the appropriate level of oversight of such clinical sites and investigators;

•delay or failure in having patients complete a clinical trial or return for post-treatment follow-up;

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•delay or failure in recruiting and enrolling suitable patients to participate in a clinical trial;

•inability, delay, or failure in identifying and maintaining a sufficient number of clinical trial sites, many of which may already be engaged in other clinical programs;

•delay or failure in reaching agreement with the FDA, the EMA, the PMDA or other regulatory authorities on a clinical trial design upon which we are able to execute;

•delay or failure in obtaining authorization to commence a clinical trial or inability to comply with conditions imposed by a regulatory authority regarding the scope or design of a clinical trial;

•delays in reaching, or failure to reach, agreement on acceptable terms with prospective clinical trial sites and prospective CROs, the terms of which can be subject to extensive negotiation and may vary significantly among different CROs and clinical trial sites;

•the FDA, the EMA, the PMDA or other regulatory authorities may require us to submit additional data or impose further requirements before permitting us to initiate a clinical trial or during an ongoing clinical trial;

•the FDA, the EMA, the PMDA or other regulatory authorities may disagree with our clinical trial design and our interpretation of data from clinical trials, or may change the requirements for approval even after it has reviewed and commented on the design for our clinical trials;

•the design of our clinical trials;

•failure to comply with good practice quality guidelines and regulations, or GXP, including good laboratory practice, good clinical practice, or GCP, and current good manufacturing practice, or cGMP; or

•changes in governmental regulations or administrative actions.

Although we continue to expect the top-line data readout of our PRO₂TECT studies in early September 2020 as previously disclosed, the COVID-19 pandemic has resulted in closures of clinical trial sites on which we rely for the completion of certain other clinical trials and may delay enrollment of certain planned and ongoing clinical trials.

If we are unable to successfully complete clinical trials of our product candidates or other studies, if the results of those trials and studies are not positive or are only modestly positive, or if there are concerns with the profile due to efficacy or safety, or if any of the factors listed above occur, the following may occur:  

•regulators may require that we conduct additional clinical trials, repeat clinical trials or conduct other studies of our product candidates beyond those that we currently contemplate;

•we may be delayed in obtaining marketing approval for our product candidates;

•we may not obtain marketing approval for our product candidates at all;

•we may obtain approval for indications or patient populations that are not as broad as intended or desired;

•we may obtain approval with labeling that includes significant use or distribution restrictions or safety warnings that would reduce the potential market for our products or inhibit our ability to successfully commercialize our products;

•we may be subject to additional post-marketing restrictions and/or requirements; or

•the product may be removed from the market after obtaining marketing approval.

Our product development costs will also increase if we experience delays in preclinical and clinical development or receiving the requisite marketing approvals. Our preclinical studies or clinical trials may need to be restructured or may not be completed on schedule, or at all. Significant preclinical or clinical trial delays also could shorten any periods during which we may have the exclusive right to commercialize our product candidates or allow our competitors to bring products to market before we do. This could impair our ability to successfully commercialize our product candidates and may harm our business and results of operations.

We may find it difficult to enroll patients in our clinical studies, which could delay or prevent clinical studies of our products or product candidates.

Identifying and qualifying patients to participate in clinical studies of our products or product candidates is critical to our success. The timing of our clinical studies depends, in part, on the speed at which we can recruit patients to participate in testing our products and product candidates. Patients may be unwilling to participate in our clinical studies because of concerns about

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adverse events observed with the current standard of care, competitor products and/or other investigational agents, in each case for the same indications and/or similar patient populations. In addition, in the case of clinical studies of our product candidates, patients currently receiving treatment with the current standard of care or a competitor product may be reluctant to participate in a clinical trial with an investigational drug. Finally, competition for clinical trial sites may limit our access to patients appropriate for studies of our products and product candidates. As a result, the timeline for recruiting patients and conducting studies may be delayed. These delays could result in increased costs, delays in advancing our development of our product candidates, or termination of the clinical studies altogether.

We may not be able to identify, recruit and enroll a sufficient number of patients, or those with required or desired characteristics, to complete our clinical studies in a timely manner. Patient enrollment is affected by many factors, including:

•severity of the disease under investigation;

•design of the study protocol;

•size and nature of the patient population;

•eligibility criteria for, and design of, the study in question;

•perceived risks and benefits of the products and product candidate under study, including as a result of adverse effects observed in similar or competing therapies;

•proximity and availability of clinical study sites for prospective patients;

•availability of competing therapies and clinical studies and clinicians’ and patients’ perceptions as to the potential advantages of the product or product candidate being studied in relation to available therapies or other product candidates in development;

•efforts to facilitate timely enrollment in clinical studies;

•clinical trial sites and investigators failing to perform effectively;

•patient referral practices of physicians; and

•ability to monitor patients adequately during and after treatment.

We may not be able to initiate or continue clinical studies if we cannot enroll a sufficient number of eligible patients to participate in the clinical studies required by regulatory agencies. If we have difficulty enrolling a sufficient number of patients to conduct our clinical studies as planned, we may need to delay, limit or terminate ongoing or planned clinical studies, any of which could have a material adverse effect on our business.

We may not be able to conduct clinical trials in some jurisdictions outside of the United States.

We and our collaboration partners currently expect to seek marketing approval of vadadustat for the treatment of anemia due to CKD in markets outside the United States, including the EU. Our ability to successfully initiate, enroll and complete a clinical study in any country outside of the United States is subject to numerous additional risks unique to conducting business in jurisdictions outside the United States, including:

•difficulty in establishing or managing relationships with qualified CROs, physicians and clinical trial sites;

•different local standards for the conduct of clinical studies;

•difficulty in complying with various and complex import laws and regulations when shipping drug to certain countries; and

•the potential burden of complying with a variety of laws, medical standards and regulatory requirements, including the regulation of pharmaceutical and biotechnology products and treatments.

Data obtained from studies conducted in the United States may not be accepted by the EMA, the PMDA and other regulatory authorities outside of the United States. Also, certain jurisdictions require data from studies conducted in their country in order to obtain approval in that country. For example, in Japan, MTPC conducted a Phase 3 program of vadadustat, which is separate from our global Phase 3 program of vadadustat.

If we or our collaboration partners have difficulty conducting our clinical studies in jurisdictions outside the United States as planned, we may need to delay, limit or terminate ongoing or planned clinical studies, any of which could have a material adverse effect on our business.

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Positive results from preclinical and clinical studies are not necessarily predictive of the results of any future clinical studies.

Clinical testing is expensive and can take many years to complete, and its outcome is inherently uncertain. Failure can occur at any time during the clinical trial process. Success in preclinical studies may not be predictive of similar results in humans during clinical trials, successful results from early or small clinical trials may not be replicated in later and larger clinical trials, and successful interim results from ongoing clinical studies may not be indicative of results obtained when those studies are completed. For example, our encouraging preclinical and clinical results for vadadustat thus far do not ensure that the results of any future clinical trials will demonstrate similar results. Our global Phase 3 development program for vadadustat has enrolled a larger number of patients and will treat patients for longer periods than our prior trials, which will result in a greater likelihood that adverse events may be observed. Due to these and other differences between our global Phase 3 development program for vadadustat and our prior trials, our positive results from preclinical and clinical studies may not be replicated in our global Phase 3 development program for vadadustat. For example, our positive INNO₂VATE Phase 3 data do not ensure that PRO₂TECT will demonstrate similar results. Many companies in the biopharmaceutical industry have suffered significant setbacks in late-stage clinical trials after achieving positive results in early stage development, and we may face similar setbacks. If the results of our ongoing or future clinical trials for vadadustat or any other product candidates are inconclusive with respect to efficacy, if we do not meet our clinical endpoints with statistical significance, or if there are safety concerns or adverse events, we may be prevented from or delayed in obtaining marketing approval for vadadustat or any other product candidates.

We may not be successful in our efforts to identify, acquire, discover, develop and commercialize additional products or product candidates, which could impair our ability to grow.

Although we continue to focus a substantial amount of our efforts on the commercialization of Auryxia and the development and potential commercialization of vadadustat, a key element of our long-term growth strategy is to acquire, develop and/or market additional products and product candidates. Research programs to identify product candidates require substantial technical, financial and human resources, regardless of whether product candidates are ultimately identified. Our research and development programs may initially show promise, yet fail to yield product candidates for clinical development or commercialization for many reasons, including the following:

•the research methodology used may not be successful in identifying potential indications and/or product candidates;

•we may not be able or willing to assemble sufficient resources to acquire or discover additional product candidates;

•a product candidate may be shown to have harmful side effects, a lack of efficacy or otherwise does not meet applicable regulatory criteria;

•product candidates we develop may nevertheless be covered by third party patents or other exclusive rights;

•the market for a product candidate may change during our program so that the continued development of that product candidate is no longer reasonable;

•a product candidate may not be capable of being produced in commercial quantities at an acceptable cost, or at all; or

•a product candidate may not be accepted as safe and effective by patients, the medical community, or third party payors, if applicable.

If any of these events occurs, we may be forced to abandon our research and development efforts for one or more of our programs, or we may not be able to identify, discover, develop or commercialize additional product candidates, which would have a material adverse effect on our business.

Because we have limited financial and managerial resources, we focus on research programs and product candidates for specific indications. As a result, we may forego or delay pursuit of opportunities with other product candidates or for other indications that later prove to have greater commercial potential or a greater likelihood of success. Our resource allocation decisions may cause us to fail to capitalize on viable commercial products or profitable market opportunities.

Because our internal research capabilities are limited, we may be dependent upon other pharmaceutical and biotechnology companies, academic scientists, and other researchers to sell or license products or technology to us. The success of this strategy depends partly upon our ability to identify, select, and acquire promising product candidates and products. The process of proposing, negotiating and implementing a license or acquisition of a product candidate or an approved product is lengthy

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and complex. Other companies, including some with substantially greater financial, marketing and sales resources, may compete with us for the license or acquisition of a product candidate or an approved product. We have limited resources to identify and execute the acquisition or in-licensing of third party products, businesses, and technologies and integrate them into our current infrastructure.

Moreover, we may devote resources to potential acquisitions or in-licensing opportunities that are never completed, or we may fail to realize the anticipated benefits of such efforts, including, for example, with respect to the Merger. Any product candidate that we acquire may require additional development efforts prior to commercial sale, including extensive clinical testing and approval by the FDA, the EMA, the PMDA or other regulatory authorities, or post-approval testing or other requirements if approved. All product candidates are prone to risks of failure typical of pharmaceutical product development, including the possibility that a product candidate will not be shown to be sufficiently safe and effective for approval by regulatory authorities. In addition, we cannot provide assurance that any products that we develop or approved products that we acquire will be manufactured profitably, achieve market acceptance or not require substantial post-marketing clinical trials.

Accordingly, there can be no assurance that we will ever be able to identify additional therapeutic opportunities for our product candidates or to acquire or develop suitable potential product candidates or approved products, which could materially adversely affect our future growth and prospects. We may focus our efforts and resources on potential product candidates or other programs that ultimately prove to be unsuccessful.

Auryxia, vadadustat or any other products and product candidates may cause undesirable side effects or have other properties that delay or limit their commercial potential, or in the case of our product candidates, prevent their marketing approval.

Undesirable side effects caused by our product or product candidates or competing commercial products or product candidates in development that utilize a common mechanism of action could cause us or regulatory authorities to interrupt, delay or halt clinical trials, could result in a more restrictive label or the delay, denial or withdrawal of marketing approval by the FDA or other regulatory authorities, and could lead to potential product liability claims. Results of our clinical trials could reveal a high and unacceptable severity and prevalence of side effects or unexpected characteristics.

If we or others identify undesirable side effects caused by Auryxia, vadadustat, or any other products or product candidates, either before or after receipt of marketing approval, a number of potentially significant negative consequences could result, including:

•our clinical trials may be put on hold;

•patient recruitment could be slowed, and enrolled patients may not want to complete the clinical trial;

•we may be unable to obtain marketing approval for our product candidates or regulatory authorities may withdraw approvals of products;

•regulatory authorities may require warnings on the label such as the warning on Auryxia’s label regarding iron overload;

•Risk Evaluation and Mitigation Strategies, or REMS, or FDA-imposed risk management plans that use risk minimization strategies to ensure that the benefits of certain prescription drugs outweigh their risks, may be required;

•we could be sued and held liable for harm caused to patients; and

•our reputation may suffer.

Any of these events could prevent us from achieving or maintaining marketing approval and, ultimately, market acceptance of Auryxia, vadadustat or any other products or product candidates, could substantially increase our costs, and could significantly impact our ability to successfully commercialize Auryxia, vadadustat or any other products and product candidates and generate revenues.

The patient populations treated with Auryxia and the patients in our clinical studies for vadadustat, have CKD, a serious disease that increases the risk of cardiovascular disease including heart attacks and stroke and, ultimately, may cause kidney failure. Many patients with CKD are elderly with comorbidities making them susceptible to significant health risks. Therefore, the likelihood of these patients having adverse events, including serious adverse events, while participating in our studies is high.

In our clinical studies of vadadustat, adverse events were reported. For example, in our Phase 2b study of vadadustat in non-dialysis patients with anemia due to CKD, one subject with multiple co-morbidities and concomitant medications, including

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chlorthalidone, had a serious adverse event of liver function test abnormal, considered a case of drug induced liver injury meeting the biochemical criteria of Hy’s Law, which was assessed as probably related to vadadustat. Serious adverse events considered related to vadadustat and any other product candidates could have a material adverse effect on the development of such product candidates and our business as a whole. Our understanding of adverse events in prior clinical trials of our product candidates may change as we gather more information, and additional unexpected adverse events may be observed in future clinical trials.

The most commonly reported adverse reactions in the clinical trials that supported the approval of Auryxia for the Hyperphosphatemia Indication in the United States included diarrhea (21%), discolored feces (19%), nausea (11%), constipation (8%), vomiting (7%), and cough (6%). Gastrointestinal adverse reactions were the most common reason for discontinuing Auryxia (14%) in clinical trials for the Hyperphosphatemia Indication. The most commonly reported adverse reactions in the clinical trials that supported the approval of Auryxia in the United States for the IDA Indication included discolored feces (22%), diarrhea (21%), constipation (18%), nausea (10%), abdominal pain (5%) and hyperkalemia (5%). Diarrhea was the most common reason for discontinuing Auryxia (2.6%) in clinical trials for the IDA Indication.

Furthermore, any post-marketing clinical trials conducted, if successful, may expand the patient populations treated with Auryxia, or any other products we acquire or for which we receive marketing approval, within or outside of their current indications or patient populations, which could result in the identification of previously unknown side effects, increased frequency or severity of known side effects, or detection of unexpected safety signals.  In addition, as Auryxia and any other products are commercialized, they will be used in larger patient populations and in less rigorously controlled environments than in clinical studies. As a result, regulatory authorities, healthcare practitioners, third party payors or patients may perceive or conclude that the use of Auryxia or any other products are associated with serious adverse effects, undermining our commercialization efforts.

Further, if we or others identify previously unknown side effects, if known side effects are more frequent or severe than in the past, if we or others detect unexpected safety signals for our products or product candidates, including Auryxia, vadadustat, or any product or product candidate perceived to be similar to Auryxia, vadadustat or any other products or product candidates, or if any of the foregoing are perceived to have occurred, either before or after receipt of marketing approval, a number of potentially significant negative consequences could result, including:

•sales may be impaired;

•regulatory approvals may be restricted or withdrawn;

•we may decide to, or be required to, send drug warnings or safety alerts to physicians, pharmacists and hospitals (or the FDA or other regulatory authorities may choose to issue such alerts), or we may decide to conduct a product recall or be requested to do so by the FDA or other regulatory authority;

•reformulation of the product, additional nonclinical or clinical studies, changes in labeling or changes to or re-approvals of manufacturing facilities may be required;

•we may be precluded from pursuing additional development opportunities to enhance the clinical profile of a product within its indicated populations, or studying the product or product candidate in additional indications and populations or in new formulations; and

•government investigations or lawsuits, including class action suits, may be brought against us.

Any of the above occurrences could delay or prevent us from achieving or maintaining marketing approval, harm or prevent sales of Auryxia or, if approved, vadadustat or other product candidates, increase our expenses and impair or prevent our ability to successfully commercialize Auryxia, vadadustat or any other products or product candidates

Risks Related to Regulatory Approval of Our Product Candidates

We may be delayed in obtaining, or be unable to obtain, marketing approval or reimbursement for vadadustat or any other product candidate in certain countries outside of the United States.

Regulatory authorities outside of the United States will require compliance with numerous and varying requirements. The approval procedures vary among jurisdictions and may involve requirements for additional testing, and the time required to obtain approval may differ from that required to obtain FDA approval. In addition, in many countries outside the United States, a drug product must be approved for reimbursement before it can be marketed or sold in that country. In some cases, the prices that we intend to charge for our products are also subject to approval. Approval by the FDA does not ensure approval by regulatory or reimbursement authorities outside the United States, and approval by one regulatory or reimbursement authority outside the United States does not ensure approval by the FDA or any other regulatory or reimbursement authorities. However,

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the failure to obtain approval or reimbursement in one jurisdiction may negatively impact our ability to obtain approval or reimbursement in another jurisdiction. The marketing approval process in countries outside of the United States may include all of the risks associated with obtaining FDA approval and, in some cases, additional risks. We may not obtain such regulatory or reimbursement approvals on a timely basis, if at all. We may not be able to file for marketing approvals and may not receive the necessary approvals to commercialize our product candidates in any market. Also, favorable pricing in certain countries depends on a number of factors, some of which are outside of our control.

Additionally, on June 23, 2016, the electorate in the United Kingdom voted in favor of leaving the European Union, commonly referred to as Brexit. Following protracted negotiations, the United Kingdom left the European Union on January 31, 2020. Under the withdrawal agreement, there is a transitional period until December 31, 2020 (extendable up to two years). Discussions between the United Kingdom and the European Union have so far mainly focused on finalizing withdrawal issues and transition agreements but have been extremely difficult to date. To date, only an outline of a trade agreement has been reached. Much remains open, but the Prime Minister has indicated that the United Kingdom will not seek to extend the transitional period beyond the end of 2020. If no trade agreement has been reached before the end of the transitional period, there may be significant market and economic disruption. The Prime Minister has also indicated that the United Kingdom will not accept high regulatory alignment with the European Union.

Since the regulatory framework for pharmaceutical products in the United Kingdom covering quality, safety, and efficacy of pharmaceutical products, clinical trials, marketing authorization, commercial sales, and distribution of pharmaceutical products is derived from EU directives and regulations, Brexit could materially impact the future regulatory regime that applies to products and the approval of product candidates in the United Kingdom. Any delay in obtaining, or an inability to obtain, any marketing approvals, as a result of Brexit or otherwise, may force us to restrict or delay efforts to seek regulatory approval in the United Kingdom and/or the EU for our product candidates, which could significantly and materially harm our business.

Products approved for marketing are subject to extensive post-marketing regulatory requirements and could be subject to post-marketing restrictions or withdrawal from the market, and we may be subject to penalties if we fail to comply with regulatory requirements or if we experience unanticipated problems with our products, or product candidates, when and if any of them is approved.

Marketing approvals may be subject to limitations on the approved indicated uses for which the product may be marketed or other conditions of approval, or contain requirements for potentially costly post-marketing studies and surveillance to monitor the safety and efficacy of the product, including REMS, or registries or observational studies. For example, in connection with the FDA approvals of Auryxia, we initially committed to the FDA to conduct certain post-approval pediatric studies of Auryxia under the Pediatric Research Equity Act of 2003, or PREA. With regard to the Hyperphosphatemia Indication, we committed to completing the post-approval pediatric study and submitting a final report to the FDA by December 31, 2019. With regard to our IDA Indication, we committed to completing the post-approval pediatric study and submitting a final report to the FDA by January 2023. We cannot guarantee that we will be able to complete these studies and submit the final reports in a timely manner. For example, with regard to the Hyperphosphatemia Indication, we did not complete and submit the post-marketing requirement pediatric clinical study report by December 31, 2019, and we received a notification of noncompliance with PREA. Our request to extend this deadline was denied, and the study is considered delayed. With regard to the IDA Indication, we did not meet a milestone relating to the post-approval pediatric study of Auryxia in a timely manner and received a notification from the FDA.

If we are unable to complete these studies successfully, we will need to inform the FDA, have further discussions, and if the FDA finds that we failed to comply with pediatric study requirements, it could initiate proceedings to seize or enjoin the sale of Auryxia, which would have a material adverse impact on our ability to commercialize Auryxia and our ability to generate revenues from Auryxia.

In addition, the manufacturing processes, labeling, packaging, distribution, adverse event reporting, storage, advertising, promotion and recordkeeping for Auryxia, and any other product for which we receive regulatory approval, will be subject to extensive and ongoing regulatory requirements and guidance. These requirements and guidance include manufacturing processes and procedures (including record keeping), the implementation and operation of quality systems to control and assure the quality of the product, submissions of safety and other post-marketing information and reports, as well as continued compliance with cGMPs and GCPs for any clinical trials that we conduct post-approval. If we or our CMOs fail to adhere to such regulatory requirements and guidance, we could suffer significant consequences, including product seizures or recalls, loss of product approval, fines and sanctions, reputational damage, shipment delays, inventory shortages, inventory write-offs and other product-related charges and increased manufacturing costs, and our development or commercialization efforts may be materially harmed.

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Moreover, the FDA and other regulatory authorities closely regulate the post-approval marketing and promotion of drugs to ensure drugs are marketed only for the approved indications and in accordance with the provisions of the approved labeling. The FDA and other regulatory authorities impose stringent restrictions on companies’ communications regarding use of their products, and if we promote our products beyond their approved indications or inconsistent with the approved label, we may be subject to enforcement actions or prosecution arising from such activities. Violations of the U.S. Federal Food, Drug, and Cosmetic Act, or the FD&C Act, relating to the promotion of prescription drugs may lead to investigations alleging violations of federal and state healthcare fraud and abuse and other laws, as well as state consumer protection laws, insurance fraud laws, third party payor actions, shareholder actions and other lawsuits.

Post-approval discovery of previously unknown problems with an approved product, including adverse events of unanticipated severity or frequency or relating to manufacturing operations or processes, or failure to comply with regulatory requirements, may result in, among other things:

•restrictions on the marketing, distribution, use or manufacturing of the product;

•withdrawal of the product from the market, or product recalls;

•restrictions on the labeling or marketing of a product;

•fines, restitution or disgorgement of profits or revenues;

•warning or untitled letters or clinical holds;

•refusal by the FDA or other regulatory authorities to approve pending applications or supplements to approved applications filed by us, or suspension or revocation of product approvals;

•product seizure or detention, or refusal to permit the import or export of products;

•REMS; and

•injunctions or the imposition of civil or criminal penalties.

For example, in the second quarter of 2020, we initiated a limited, voluntary recall of specific lots of Auryxia because it was determined that these lots were not manufactured in conformance with the FDA's GMP guidance relating to validation. In addition, we recorded a write-down of inventory associated with affected lots during the second quarter of 2020. While the costs of this recall were immaterial, should another recall occur in the future, it could result in material costs and have a material adverse effect on our business and results of operations.

Non-compliance with FDA, the EMA, the PMDA and other regulatory authorities’ requirements regarding safety monitoring or pharmacovigilance can also result in significant financial penalties.

The FDA’s policies and those of other regulatory authorities may change, and additional government regulations may be enacted. We cannot predict the likelihood, nature or extent of government regulations that may arise from future legislation or administrative action, either in the United States or in other jurisdictions. If we are slow or unable to adapt to changes in existing requirements or the adoption of new requirements or policies, or are not able to maintain regulatory compliance, we may lose any marketing approval that we may have obtained and we may not achieve or sustain profitability, which would materially adversely affect our business.

Even if we obtain favorable clinical results in our Phase 3 studies, we may not be able to obtain marketing approval for, or successfully commercialize, vadadustat, or we may experience significant delays in doing so, any of which would materially harm our business.

The clinical trials of our product candidates are, and the manufacturing and marketing of our product candidates will be, subject to extensive and rigorous review and regulation by numerous governmental authorities in the United States, and in other countries where we and our collaborators intend to test and, if approved, market any product candidates. Before obtaining marketing approval for the commercial sale of any product candidate, we must demonstrate through extensive preclinical testing and clinical trials that the product candidate is safe and effective for use in each target indication. This process can take many years and marketing approval may never be achieved. Of the large number of drugs in development in the United States and in other jurisdictions, only a small percentage successfully complete the FDA’s and other jurisdictions’ marketing approval processes and are commercialized. Accordingly, even if we are able to obtain the requisite capital to continue to fund our development programs, we may be unable to successfully develop or commercialize vadadustat or any other product candidates.

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We and Otsuka, our collaboration partner, are not permitted to market vadadustat in the United States until we receive approval from the FDA, in the EU until we receive approval from the EMA, or in any other jurisdiction until the requisite approval from regulatory authorities in such jurisdiction is received. As a condition to receiving marketing approval for vadadustat, we must complete Phase 3 studies and any additional preclinical or clinical studies required by the FDA, the EMA, the PMDA or other regulatory authorities. Vadadustat may not be successful in clinical trials or receive marketing approval. Further, vadadustat may not receive marketing approval even if it is successful in clinical trials or if it is approved in other countries. For example, although vadadustat is approved in Japan for the treatment of anemia due to CKD, such approval does not guarantee either positive PRO₂TECT data or approval in the United States by the FDA.

Obtaining marketing approval in the United States and other jurisdictions is a complex, lengthy, expensive and uncertain process that typically takes many years and depends upon numerous factors, including the substantial discretion of the regulatory authorities. Even if our product candidates demonstrate safety and efficacy in clinical studies, the regulatory agencies may not complete their review processes in a timely manner, or we may not be able to obtain marketing approval. Furthermore, approval of a drug does not ensure successful commercialization. For example, on September 23, 2015, the European Commission, or EC, approved Fexeric for the control of hyperphosphatemia, in adult patients with CKD. Pursuant to the sunset clause under EU law, the EC’s approval of Fexeric in the EU was contingent on, among other things, our commencing marketing of Fexeric within three years; although we successfully negotiated an extension to December 23, 2019, we did not commence marketing Fexeric by such date and therefore the Fexeric approval in the EU has ceased to be valid.

If the results of our global Phase 3 studies for vadadustat are positive, we plan to file for regulatory approval in the United States and other regions. In February 2020, we entered into a letter agreement, or the Letter Agreement, with Vifor Pharma relating to Vifor Pharma’s agreement with a third party to purchase a Priority Review Voucher issued by the FDA, or the PRV, subject to satisfaction of customary closing conditions, or the PRV Purchase. Although a PRV entitles the holder to priority review of an NDA or a Biologics License Application for a new drug, which reduces the target FDA review time to six months after official acceptance of the submission, the utilization of a PRV does not ensure a faster review or faster approval compared to products considered for approval under conventional FDA procedures, and in any event does not assure ultimate approval by FDA. Furthermore, even if utilization of the PRV enables a faster approval of vadadustat, it may not result in faster commercialization of vadadustat. For more information on risks related to commercialization of vadadustat, see “Risks Related to Commercialization”. In addition, pursuant to the Letter Agreement, we paid Vifor Pharma $10.0 million in connection with the closing of the PRV Purchase. Vifor Pharma is obligated to retain all rights to, and maintain the validity of, the PRV until we and Vifor Pharma (a) enter into a definitive agreement setting forth the financial and other terms by which Vifor Pharma will assign the PRV to us for use with our planned NDA for vadadustat for the treatment of anemia due to CKD in both dialysis-dependent and non-dialysis dependent patients, or (b) make a mutual decision to sell the PRV and share the proceeds based on certain terms. We may not come to terms with Vifor Pharma on assigning the PRV to us, and even if we do, we and Vifor Pharma may decide not to use the PRV for vadadustat and, instead, resell it.  In the event of resale of the PRV at a price lower than the purchase price, our share of the proceeds from the resale would be lower than our $10.0 million contribution.

In addition, the safety concerns associated with the current standard of care for the indications for which we are seeking marketing approval for our product candidates may affect the FDA’s, the EMA’s, the PMDA’s or other regulatory authorities’ review of the safety results of our compounds in development. Further, the policies or regulations, or the type and amount of clinical data necessary to gain approval, may change during the course of a product candidate’s clinical development and may vary among jurisdictions. It is possible that vadadustat and any other product candidates will never obtain marketing approval. The FDA may delay, limit or deny approval of vadadustat or any other product candidates for many reasons including, among others:

•we may not be able to demonstrate that vadadustat is safe and effective in treating anemia due to CKD or that any other product candidate is safe and effective for its proposed indication(s) to the satisfaction of the FDA;

•the results of our clinical trials may only be modestly positive, or there may be concerns with the profile due to efficacy or safety;

•the results of our clinical trials may not meet the level of statistical or clinical significance required by the FDA for marketing approval;

•the FDA may disagree with the number, design, size, conduct or implementation of our clinical trials;

•the FDA may not approve the formulation, labeling or specifications we request for vadadustat or any other product candidate;

•the FDA may approve vadadustat or any other product candidate for use only in a small patient population or for fewer or more limited indications than we request;

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•the FDA may require that we conduct additional clinical trials or repeat one or more clinical trials;

•the FDA may grant approval contingent on the performance of costly post-marketing clinical trials;

•we, or our CROs or vendors, may fail to comply with GXP;

•the CROs that we retain to conduct our clinical trials may not perform effectively or take actions that adversely impact our clinical trials, or we may fail to communicate effectively or provide the appropriate level of oversight of our CROs;

•we or our third party manufacturers may fail to perform in accordance with the FDA’s cGMP requirements and guidance;

•the FDA may disagree with inclusion of data obtained from certain regions outside the United States to support the NDA for potential reasons such as differences in clinical practice from United States standards;

•the FDA may disagree with our interpretation of data from our preclinical studies and clinical trials;

•the FDA could deem that our financial relationships with certain principal investigators constitute a conflict of interest, such that the data from those principal investigators may not be used to support our applications;

•an FDA Advisory Committee or other regulatory advisory group or authority could recommend non-approval or restrictions on approval;

•the FDA’s decision-making regarding vadadustat and any other product candidates may be impacted by the results of competitors’ clinical trials and safety concerns of marketed products used to treat the same indications as the indications for which vadadustat and any other product candidates are being developed;

•the FDA may not approve the manufacturing processes or facilities of third party manufacturers with whom we contract; or

•the policies or regulations of the FDA may significantly change in a manner that renders our clinical data insufficient for approval, or requires us to amend or submit new clinical protocols.

In addition, similar reasons may cause the EMA or the PMDA or other regulatory authorities to delay, limit or deny approval of vadadustat or any other product candidate outside the United States.

If we experience delays in obtaining approval, or if we fail to obtain approval of our product candidates, the commercial prospects for our product candidates may be harmed and our ability to generate revenues will be materially impaired, which could have a material adverse effect on our business.

Risks Related to Government Regulation and Compliance

We are subject to a complex regulatory scheme that requires significant resources to ensure compliance. Failure to comply with applicable laws could subject us to government scrutiny or government enforcement, potentially resulting in costly investigations and/or fines or sanctions, or impacting our relationships with key regulatory agencies such as the FDA, SEC or the EMA.

A variety of laws apply to us or may otherwise restrict our activities, including the following:

•laws and regulations governing the conduct of preclinical and clinical studies in the United States and other countries in which we are conducting such studies;

•laws and regulations in the United States and in countries in which we are interacting with healthcare providers, patients, patient organizations and other constituencies that prohibit promoting a drug prior to approval and/or reimbursement;

•laws and regulations of countries outside the United States that prohibit pharmaceutical companies from promoting prescription drugs to the general public;

•laws, regulations and industry codes that vary from country to country and govern our relationships with healthcare providers, patients, patient organizations, and other constituencies, prohibit certain types of gifts and entertainment, establish codes of conduct and, in some instances, require disclosure to, or approval by, regulatory authorities for us to engage in arrangements with such constituencies;

•anti-corruption and anti-bribery laws, including the FCPA, the UK Bribery Act and various other anti-corruption laws in countries outside of the United States;

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•data privacy laws existing in the United States, the EU and other countries in which we operate, including the U.S. Health Insurance Portability and Accountability Act of 1996, or HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act, or HITECH, the GDPR, and state privacy and data protection laws, such as the California Consumer Privacy Act, or CCPA, as well as state consumer protection laws;

•federal and state laws requiring the submission of accurate product prices and notifications of price increases;

•federal and state securities laws; and

•international trade laws, which are laws that regulate the sale, purchase, import, export, re-export, transfer and shipment of goods, products, materials, services and technology.

Compliance with these and other applicable laws and regulations requires us to expend significant resources. Failure to comply with these laws and regulations may subject us to government investigations, enforcement actions by regulatory authorities, penalties, damages, fines, the restructuring of our operations, or the imposition of a clinical hold, any of which could materially adversely affect our business and would result in increased costs and diversion of management attention and could delay or prevent the development, regulatory approval and commercialization of our product candidates, any of which could have a material adverse effect on our business.

We will incur significant liability if it is determined that we are promoting any “off-label” use of Auryxia or any other product we may develop, acquire or in-license or if it is determined that any of our activities violates the federal Anti-Kickback Statute.

Physicians are permitted to prescribe drug products for uses that differ from those approved by the FDA or other applicable regulatory agencies. Although the FDA and other regulatory agencies do not regulate a physician’s choice of treatments, the FDA and other regulatory agencies do restrict manufacturer communications regarding unapproved uses of an approved drug. Companies are not permitted to promote drugs for unapproved uses or in a manner that is inconsistent with the FDA-approved labeling. There are also restrictions about making comparative or superiority claims based on safety or efficacy that are not supported by substantial evidence. Accordingly, we may not promote Auryxia in the United States for use in any indications other than the Hyperphosphatemia Indication and the IDA Indication, and all promotional claims must be consistent with the FDA-approved labeling for Auryxia. Promoting a drug off-label is a violation of the FD&C Act and can give rise to liability under the federal False Claims Act, as well as under additional federal and state laws and insurance statutes. The FDA, the Department of Justice and other regulatory and enforcement authorities enforce laws and regulations prohibiting promotion of off-label uses and the promotion of products for which marketing approval has not been obtained, as well as the false advertising or misleading promotion of drugs. In addition, laws and regulations govern the distribution and tracing of prescription drugs and prescription drug samples, including the Prescription Drug Marketing Act of 1976 and the Drug Supply Chain Security Act, which regulate the distribution and tracing of prescription drugs and prescription drug samples at the U.S. federal level and set minimum standards for the regulation of drug distributors by the states. A company that is found to have improperly promoted off-label uses or to have otherwise engaged in false or misleading promotion or improper distribution of drugs will be subject to significant liability, potentially including civil and administrative remedies as well as criminal sanctions. It may also be subject to exclusion and debarment from federal healthcare reimbursement programs.

Notwithstanding the regulatory restrictions on off-label promotion, the FDA and other regulatory authorities allow companies to engage in truthful, non-misleading, and non-promotional scientific communications concerning their products in certain circumstances. In addition, under some relatively recent guidance from the FDA, companies may also promote information that is consistent with the prescribing information and proactively speak to formulary committee members of payors regarding data for an unapproved drug or unapproved uses of an approved drug. We intend to engage in these discussions and communicate with healthcare providers, payors and other constituencies in compliance with all applicable laws, regulatory guidance and industry best practices. Although we believe we have put in place a robust compliance program and processes designed to ensure that all such activities are performed in a legal and compliant manner, Auryxia is our first commercial product so our implementation of our compliance program in connection with commercialization activities is still relatively new.

In addition, if a company’s activities are determined to have violated the federal Anti-Kickback Statute, this can also give rise to liability under the federal False Claims Act and such violations can result in significant fines, criminal and civil remedies, and exclusion from Medicare and Medicaid.  There is increased government focus on relationships between the pharmaceutical industry and physicians, pharmacies (especially specialty pharmacies), and other sources of referrals. Common industry activities, such as speaker programs, insurance assistance and support, relationships with foundations providing copayment assistance, and relationships with patient organizations and patients are receiving increased governmental attention. If any of our relationships or activities is determined to violate applicable federal and state anti-kickback laws, false claims laws, or other

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laws or regulations, the company and/or company executives, employees and other representatives could be subject to significant fines and criminal sanctions, imprisonment, and potential exclusion from Medicare and Medicaid.

Efforts to pursue regulatory reform may limit the FDA’s ability to engage in oversight and implementation activities in the normal course, and that could negatively impact our business.

There have been several executive actions taken, including the issuance of a number of executive orders, that could impose significant burdens on, or otherwise materially delay, the FDA’s ability to engage in routine regulatory and oversight activities such as implementing statutes through rulemaking, issuance of guidance, and review and approval of marketing applications. On January 30, 2017, an executive order, applicable to all executive agencies including the FDA, was issued that requires that for each notice of proposed rulemaking or final regulation to be issued in fiscal year 2017, the agency shall identify at least two existing regulations to be repealed, unless prohibited by law. These requirements are referred to as the “two-for-one” provisions. This executive order includes a budget neutrality provision that requires the total incremental cost of all new regulations in the 2017 fiscal year, including repealed regulations, to be no greater than zero, except in limited circumstances. For fiscal years 2018 and beyond, the executive order requires agencies to identify regulations to offset any incremental cost of a new regulation. Interim guidance issued by the Office of Information and Regulatory Affairs within the Office of Management and Budget on February 2, 2017, indicates that the “two-for-one” provisions may apply not only to agency regulations, but also to significant agency guidance documents. More recently, on October 9, 2019, the President issued another executive order meant to ensure that agency guidance documents do not establish legally binding requirements and directing each agency to rescind guidance documents that it determines should no longer be in effect. If these executive actions impose constraints on FDA’s ability to engage in oversight and implementation activities in the normal course, our business may be negatively impacted.

Compliance with privacy and data security requirements could result in additional costs and liabilities to us or inhibit our ability to collect and process data globally, and the failure to comply with such requirements could subject us to significant fines and penalties, which may have a material adverse effect on our business, financial condition or results of operations.

The regulatory framework for the collection, use, safeguarding, sharing, transfer and other processing of information worldwide is rapidly evolving and is likely to remain uncertain for the foreseeable future. Globally, virtually every jurisdiction in which we operate has established its own data security and privacy frameworks with which we must comply. For example, the collection, use, disclosure, transfer, or other processing of personal data regarding individuals in the EU, including personal health data, is subject to the GDPR, which took effect across all member states of the European Economic Area, or EEA, in May 2018. The GDPR is wide-ranging in scope and imposes numerous requirements on companies that process personal data when required, including requirements relating to processing health and other sensitive data, obtaining consent of the individuals to whom the personal data relates, providing information to individuals regarding data processing activities, implementing safeguards to protect the security and confidentiality of personal data, providing notification of data breaches, and taking certain measures when engaging third party processors. The GDPR increases our obligations with respect to sponsors with clinical trial sites in the EEA by expanding the definition of personal data to include coded data and requiring changes to informed consent practices and more detailed notices for clinical trial patients and investigators. In addition, the GDPR also imposes strict rules on the transfer of personal data to countries outside the EU, including the United States and, as a result, increases the scrutiny that clinical trial sites located in the EEA should apply to transfers of personal data from such sites to countries that are considered to lack an adequate level of data protection, such as the United States. The GDPR also permits data protection authorities to require destruction of improperly gathered or used personal information and/or impose substantial fines for violations of the GDPR, which can be up to four percent of global revenues or 20 million Euros, whichever is greater, and it also confers a private right of action on data patients and consumer associations to lodge complaints with supervisory authorities, seek judicial remedies, and obtain compensation for damages resulting from violations of the GDPR. In addition, the GDPR provides that EU member states may make their own further laws and regulations limiting the processing of personal data, including genetic, biometric or health data.  

Given the breadth and depth of changes in data protection obligations, complying with the GDPR’s requirements is rigorous and time intensive and requires significant resources and a review of our technologies, systems and practices, as well as those of any third party collaborators, service providers, contractors or consultants that process or transfer personal data collected in the EU. The GDPR and other changes in laws or regulations associated with the enhanced protection of certain types of sensitive data, such as healthcare data or other personal information from our clinical trials, could require us to change our business practices and put in place additional compliance mechanisms, may interrupt or delay our development, regulatory and commercialization activities and increase our cost of doing business, and could lead to government enforcement actions, private litigation and significant fines and penalties against us and could have a material adverse effect on our business, financial condition or results of operations.

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Similar privacy and data security requirements are either in place or underway in the United States. There are a broad variety of data protection laws that may be applicable to our activities, and a range of enforcement agencies at both the state and federal levels that can review companies for privacy and data security concerns. The Federal Trade Commission and state Attorneys General all are aggressive in reviewing privacy and data security protections for consumers. New laws also are being considered at both the state and federal levels. For example, the CCPA, which went into effect on January 1, 2020, is creating similar risks and obligations as those created by GDPR. Because of this, we may need to engage in additional activities (e.g., data mapping) to identify the personal information we are collecting and the purposes for which such information is collected. In addition, we will need to ensure that our policies recognize the rights granted to consumers (as that phrase is broadly defined in the CCPA and can include business contact information). Many other states are considering similar legislation. A broad range of legislative measures also have been introduced at the federal level. Accordingly, failure to comply with current and any future federal and state laws regarding privacy and security of personal information could expose us to fines and penalties. We also face a threat of potential consumer class actions related to these laws and the overall protection of personal data. Even if we are not determined to have violated these laws, investigations into these issues typically require the expenditure of significant resources and generate negative publicity, which could harm our reputation and our business.

Our relationships with healthcare providers, physicians and third party payors are subject to applicable anti-kickback, fraud and abuse, false claims, transparency, health information privacy and security, and other healthcare laws and regulations, which, in the event of a violation, could expose us to criminal sanctions, civil penalties, contractual damages, reputational harm, administrative burdens and diminished profits and future earnings.

Healthcare providers, physicians and third party payors play a primary role in the recommendation and prescription of Auryxia and any other product candidates for which we obtain marketing approval. Our arrangements with healthcare providers, physicians and third party payors expose us to broadly applicable fraud and abuse and other healthcare laws and regulations that may constrain the business or financial arrangements and relationships through which we market, sell and distribute Auryxia and any other products or product candidates for which we obtain marketing approval. In addition, we may be subject to transparency laws and patient privacy regulation by federal and state governments and by governments in foreign jurisdictions in which we conduct our business. Restrictions under applicable federal and state healthcare laws and regulations include the following:

•the FD&C Act which among other things, strictly regulates drug product marketing and promotion and prohibits manufacturers from marketing such products for off-label use;

•federal laws that require pharmaceutical manufacturers to report certain calculated product prices to the government or provide certain discounts or rebates to government authorities or private entities, often as a condition of reimbursement under government healthcare programs, and laws requiring notification of price increases;

•the federal Anti-Kickback Statute prohibits, among other things, persons from knowingly and willfully soliciting, offering, receiving or providing remuneration, directly or indirectly, in cash or in kind, to induce or reward, or in return for, either the referral of an individual for, or the purchase, order or recommendation or arranging of, any good or service, for which payment may be made under a federal healthcare program such as Medicare and Medicaid;

•the federal False Claims Act imposes criminal and civil penalties, including through civil whistleblower or qui tam actions, against individuals or entities for, among other things, knowingly presenting, or causing to be presented, false or fraudulent claims for payment by a federal healthcare program or making a false statement or record material to payment of a false claim or avoiding, decreasing or concealing an obligation to pay money to the federal government, with potential liability including mandatory treble damages and significant per-claim penalties, currently set at $11,181 to $22,363 per false claim, and violations of the FD&C Act, the federal government pricing laws, and the federal Anti-Kickback Statute trigger liability under the federal False Claims Act;

•HIPAA imposes criminal and civil liability for executing a scheme to defraud any healthcare benefit program or making false statements relating to healthcare matters;

•HIPAA, as amended by the HITECH, and their respective implementing regulations, also imposes obligations, including mandatory contractual terms, with respect to safeguarding the privacy, security and transmission of individually identifiable health information;

•the federal Physician Payments Sunshine Act (renamed the Open Payments Act) requires applicable manufacturers of covered drugs to report payments and other transfers of value to physicians and teaching hospitals;

•analogous state and foreign laws and regulations, such as state anti-kickback and false claims laws and gift ban and transparency statutes, may apply to sales or marketing arrangements and claims involving healthcare

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items or services reimbursed by state Medicaid or other programs, or non-governmental third party payors, including private insurers, and which are not preempted by federal laws and often differ from state to state, thus complicating compliance efforts; and

•U.S. state laws restricting interactions with healthcare providers and other members of the healthcare community or requiring pharmaceutical manufacturers to implement certain compliance standards, which vary from state to state.

Because of the breadth of these U.S. laws, and their non-U.S. equivalents, and the narrowness of the statutory exceptions and safe harbors available, it is possible that some of our business activities could be subject to challenge under one or more of such laws. In addition, recent healthcare reforms have strengthened these laws. For example, the Health Care Reform Act, among other things, amended the intent requirement of the federal Anti-Kickback Statute. A person or entity no longer needs to have actual knowledge of the statute or specific intent to violate the law. The Health Care Reform Act also amended the False Claims Act, such that violations of the Anti-Kickback Statute are now deemed violations of the False Claims Act.

Some state laws require pharmaceutical companies to comply with the pharmaceutical industry’s voluntary compliance guidelines, such as the Pharmaceutical Research and Manufacturers of America Code on Interactions with Health Care Professionals, known as the PhRMA Code. Additionally, some state and local laws require the registration of pharmaceutical sales representatives in the jurisdiction. State and foreign laws also govern the privacy and security of health information in some circumstances, many of which differ from each other in significant ways and often are not preempted by HIPAA, thus complicating compliance efforts.

Efforts to ensure that our business arrangements with third parties comply with applicable healthcare laws and regulations involve substantial costs. One of the potential areas for governmental scrutiny involves federal and state requirements for pharmaceutical manufacturers to submit accurate price reports to the government. Because our processes for calculating applicable government prices and the judgments involved in making these calculations involve subjective decisions and complex methodologies, these calculations are subject to risk of errors and differing interpretations. In addition, they are subject to review and challenge by the applicable governmental agencies, or potential qui tam complaints, and it is possible that such reviews could result in changes, recalculations, or defense costs that may have adverse legal or financial consequences. It is possible that governmental authorities will conclude that our business practices may not comply with current or future statutes, regulations or case law involving applicable fraud and abuse or other healthcare laws and regulations. If our operations are found to be in violation of any of these laws or any other governmental regulations that may apply to us, we may be subject to significant civil, criminal and administrative penalties, damages, fines, imprisonment, exclusion of products from government funded healthcare programs, such as Medicare and Medicaid, and the curtailment or restructuring of our operations. If any of the physicians or other healthcare providers or entities with whom we expect to do business is found to be not in compliance with applicable laws, they may be subject to criminal, civil or administrative sanctions, including exclusions from participation in government funded healthcare programs.

Recently enacted and future legislation may increase the difficulty and cost for us to obtain marketing approval of and commercialize our product candidates and affect the prices we may obtain for any products that are approved in the United States or foreign jurisdictions.

In the United States and some foreign jurisdictions, there have been a number of legislative and regulatory changes and proposed changes regarding the healthcare system that could prevent or delay marketing approval of our product candidates, restrict or regulate post-approval activities and affect our ability to profitably sell Auryxia and any other products or product candidates for which we obtain marketing approval. The pharmaceutical industry has been a particular focus of these efforts and has been significantly affected by legislative initiatives. Current laws, as well as other healthcare reform measures that may be adopted in the future, may result in more rigorous coverage criteria and in additional downward pressure on the price that we receive for any FDA approved product, such as Auryxia.

In the United States, the Medicare Prescription Drug, Improvement, and Modernization Act of 2003, or the MMA, changed the way Medicare covers and pays for pharmaceutical products. The legislation expanded Medicare coverage for drug purchases by the elderly and introduced a new reimbursement methodology based on average sales prices for physician-administered drugs. In addition, this legislation provided authority for limiting the number of drugs that will be covered in any therapeutic class. Cost reduction initiatives and other provisions of this legislation could decrease the coverage and price that we receive for Auryxia and any other approved products. While the MMA applies only to drug benefits for Medicare beneficiaries, private payors often follow Medicare coverage policy and payment limitations in setting their own reimbursement rates. Therefore, any reduction in reimbursement that results from the MMA may result in a similar reduction in payments from private payors.

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In March 2010, President Obama signed into law the Patient Protection and Affordable Care Act, as amended by the Health Care and Education Reconciliation Act of 2010, or, collectively, the ACA. Among the provisions of the ACA of potential importance to our business including, without limitation, our ability to commercialize and the prices we obtain for Auryxia and may obtain for any of our product candidates that are approved for sale, are the following:

•an annual, non-deductible fee on any entity that manufactures or imports specified branded prescription drugs and biologic agents;

•an increase in the statutory minimum rebates a manufacturer must pay under the Medicaid Drug Rebate Program;

•expansion of healthcare fraud and abuse laws, including the civil False Claims Act and the federal anti-kickback statute, new government investigative powers and enhanced penalties for noncompliance;

•a new Medicare Part D coverage gap discount program, in which manufacturers must agree to offer 70% point-of-sale discounts off negotiated prices;

•extension of manufacturers’ Medicaid rebate liability;

•expansion of eligibility criteria for Medicaid programs;

•expansion of the entities eligible for discounts under the Public Health Service pharmaceutical pricing program;

•new requirements to report certain financial arrangements with physicians and teaching hospitals;

•a new requirement to annually report drug samples that manufacturers and distributors provide to physicians; and

•a new Patient-Centered Outcomes Research Institute to oversee, identify priorities in, and conduct comparative clinical effectiveness research, along with funding for such research.

In addition, other legislative changes and regulatory have been proposed and adopted since the ACA was enacted. These changes include the Budget Control Act of 2011, which, among other things, led to aggregate reductions to Medicare payments to providers of 2% per fiscal year which will remain in effect through 2029 unless additional congressional action is taken. The Coronavirus Aid, Relief, and Economic Security Act, or the CARES Act, suspended the 2% Medicare sequester from May 1, 2020 through December 31, 2020, and extended the sequester by one year, through 2030. The American Taxpayer Relief Act of 2012, which, among other things, reduced Medicare payments to several types of providers and increased the statute of limitations period for the government to recover overpayments to providers from three to five years. In addition, other legislative and regulatory changes have been proposed, but not yet adopted. For example, in July 2019, HHS proposed regulatory changes in kidney health policy and reimbursement. Any new legislative or regulatory changes may result in additional reductions in Medicare and other healthcare funding and otherwise affect the prices we may obtain for Auryxia or any product candidates for which we may obtain regulatory approval or the frequency with which Auryxia and any such product candidate is prescribed or used. Further, there have been several recent U.S. congressional inquiries and proposed state and federal legislation designed to, among other things, bring more transparency to drug pricing, review the relationship between pricing and manufacturer patient programs, reduce the costs of drugs under Medicare and reform government program reimbursement methodologies for drug products.

We expect that these healthcare reforms, as well as other healthcare reform measures that may be adopted in the future, may result in additional reductions in Medicare and other healthcare funding, more rigorous coverage criteria, new payment methodologies and additional downward pressure on the price that we receive for any approved product and/or the level of reimbursement physicians receive for administering any approved product. Reductions in reimbursement levels may negatively impact the prices we receive or the frequency with which our products are prescribed or administered. Any reduction in reimbursement from Medicare or other government programs may result in a similar reduction in payments from private payors.

With the enactment of the Tax Cuts and Jobs Act of 2017, Congress repealed the “individual mandate.” The repeal of this provision, which requires most Americans to carry a minimal level of health insurance, became effective in 2019. According to the Congressional Budget Office, the repeal of the individual mandate will cause an estimated 13 million fewer Americans to be insured in 2027 and premiums in insurance markets may rise. Additionally, on January 22, 2018, the President signed a continuing resolution on appropriations for fiscal year 2018 that delayed the implementation of certain ACA-mandated fees, including the so-called “Cadillac” tax on certain high cost employer-sponsored insurance plans, the annual fee imposed on certain health insurance providers based on market share, and the medical device excise tax on non-exempt medical devices. Further, the Bipartisan Budget Act of 2018, among other things, amended the ACA, effective January 1, 2019, to increase from 50% to 70% the point-of-sale discount that is owed by pharmaceutical manufacturers who participate in Medicare Part D and

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close the coverage gap in most Medicare drug plans, commonly referred to as the “donut hole”. Additionally, while the ACA temporarily restrained, for the years from 2014 to 2019, the growth rate for the threshold at which the Medicare Part D catastrophic coverage phase begins, in 2020, the threshold reverted to the amount that would have applied for 2020 if the growth rate had not been temporarily restrained. This is commonly referred to as the "coverage gap cliff." Beginning in 2021, the threshold will continue to increase each year by a statutorily-specified amount. Further, each chamber of the U.S. Congress has put forth multiple bills designed to repeal or repeal and replace portions of the ACA. Although none of these measures has been enacted by Congress to date, Congress may consider other legislation to repeal and replace elements of the ACA.

The current administration has also taken executive actions to undermine or delay implementation of the ACA. Since January 2017, the President has signed two Executive Orders designed to delay the implementation of certain provisions of the ACA or otherwise circumvent some of the requirements for health insurance mandated by the ACA. One Executive Order directs federal agencies with authorities and responsibilities under the ACA to waive, defer, grant exemptions from, or delay the implementation of any provision of the ACA that would impose a fiscal or regulatory burden on states, individuals, healthcare providers, health insurers, or manufacturers of pharmaceuticals or medical devices. The second Executive Order terminates the cost-sharing subsidies that reimburse insurers under the ACA. Several state Attorneys General filed suit to stop the administration from terminating the subsidies, but their request for a restraining order was denied by a federal judge in California on October 25, 2017. In addition, CMS has recently proposed regulations that would give states greater flexibility in setting benchmarks for insurers in the individual and small group marketplaces, which may have the effect of relaxing the essential health benefits required under the ACA for plans sold through such marketplaces. Further, on June 14, 2018, the U.S. Court of Appeals for the Federal Circuit ruled that the federal government was not required to pay more than $12 billion in ACA risk corridor payments to third party payors who argued that such payments were owed to them. On April 27, 2020, however, the U.S. Supreme Court reversed the federal circuit decision upholding Congress' denial of such risk corridor funding.

Further, on December 14, 2018, a U.S. District Court judge in the Northern District of Texas ruled that the individual mandate portion of the ACA is an essential and inseverable feature of the ACA and, therefore, because the mandate was repealed as part of the Tax Cuts and Jobs Act, the remaining provisions of the ACA are invalid as well. The current administration and CMS have both stated that the ruling will have no immediate effect, and on December 30, 2018 the same judge issued an order staying the judgment pending appeal. The current administration has recently represented to the court of appeals considering this judgment that it does not oppose the lower court’s ruling. On July 10, 2019, the Court of Appeals for the Fifth Circuit heard oral argument in this case. In those arguments, the current administration argued in support of upholding the lower court decision. However, in a subsequent filing, the U.S. Department of Justice contended that the ACA should be invalidated only in the states that are suing, rather than all states. On December 18, 2019, that court affirmed the lower court’s ruling that the individual mandate portion of the ACA is unconstitutional and it remanded the case to the district court for reconsideration of the severability question and additional analysis of the provisions of the ACA. On March 3, 2020, the U.S. Supreme Court agreed to hear the case. On June 25, 2020, the current administration and a coalition of 18 states asked the court to strike down the entirety of the ACA. It is unclear how such litigation and other efforts to repeal and replace the ACA will impact the ACA and our business.

The costs of prescription pharmaceuticals have also been the subject of considerable discussion in the United States, and members of U.S. Congress and the current administration have stated that they will address such costs through new legislative and administrative measures. To date, there have been several recent U.S. congressional inquiries and proposed and enacted state and federal legislation designed to, among other things, bring more transparency to drug pricing, review the relationship between pricing and manufacturer patient programs, reduce the costs of drugs under Medicare and reform government program reimbursement methodologies for drug products. At the federal level, Congress and the current administration have each indicated that it will continue to seek new legislative and/or administrative measures to control drug costs. Including measures to permit Medicare Part D plans to negotiate the price of certain drugs under Medicare Part B, to allow some states to negotiate drug prices under Medicaid, and to eliminate cost sharing for generic drugs for low-income patients.

Specifically, there have been several recent U.S. congressional inquiries and proposed federal and proposed and enacted state legislation designed to, among other things, bring more transparency to drug pricing, review the relationship between pricing and manufacturer patient programs, reduce the costs of drugs under Medicare and reform government program reimbursement methodologies for drug products. At the federal level, Congress and the current administration have each indicated that it will continue to seek new legislative and/or administrative measures to control drug costs. For example, on May 11, 2018, the current administration issued a plan to lower drug prices. Under this blueprint for action, the current administration indicated that HHS will take steps to end the gaming of regulatory and patent processes by drug makers to unfairly protect monopolies, advance biosimilars and generics to boost price competition, evaluate the inclusion of prices in drug makers’ ads to enhance price competition, speed access to and lower the cost of new drugs by clarifying policies for sharing information between insurers and drug makers, avoid excessive pricing by relying more on value-based pricing by expanding outcome-based payments in Medicare and Medicaid, work to give Medicare Part D plan sponsors more negotiation power with drug makers, examine which Medicare Part B drug prices could be negotiated by Medicare Part D plans, improve the design of the Medicare Part B Competitive Acquisition Program, update Medicare’s drug-pricing dashboard to increase transparency, prohibit

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Medicare Part D contracts that include “gag rules” that prevent pharmacists from informing patients when they could pay less out-of-pocket by not using insurance, and require that Medicare Part D plan members be provided with an annual statement of plan payments, out-of-pocket spending, and drug price increases. In addition, on December 23, 2019, the current administration published a proposed rulemaking that, if finalized, would allow states or certain other non-federal government entities to submit importation program proposals to FDA for review and approval. Applicants would be required to demonstrate their importation plans pose no additional risk to public health and safety and will result in significant cost savings for consumers.  At the same time, FDA issued draft guidance that would allow manufacturers to import their own FDA-approved drugs that are authorized for sale in other countries (multi-market approved products). The current presidential administration’s budget proposal for fiscal year 2021 includes a $135 billion allowance to support legislative proposals seeking to reduce drug prices, increase competition, lower out-of-pocket drug costs for patients, and increase patient access to lower-cost generic and biosimilar drugs, and has issued five executive orders intended to lower the costs of prescription drug products.

At the state level, individual states are increasingly aggressive in passing legislation and implementing regulations designed to control pharmaceutical and biological product pricing, including price or patient reimbursement constraints, discounts, restrictions on certain product access, marketing cost disclosure and transparency measures, and, in some cases, designed to encourage importation from other countries and bulk purchasing. In addition, regional healthcare authorities and individual hospitals are increasingly using bidding procedures to determine what pharmaceutical products and which suppliers will be included in their prescription drug and other healthcare programs. These measures could reduce the ultimate demand for our products or put pressure on our product pricing. 

It is likely that federal and state legislatures within the United States and foreign governments will continue to consider changes to existing healthcare legislation. We expect that additional state and federal healthcare reform measures will be adopted in the future, any of which could limit the amounts that federal and state governments will pay for healthcare products and services, which could result in reduced demand for Auryxia and any product candidates for which we receive marketing approval or additional pricing pressures. We cannot predict the reform initiatives that may be adopted in the future or whether initiatives that have been adopted will be repealed or modified. The continuing efforts of the government, insurance companies, managed care organizations and other payors of healthcare services to contain or reduce costs of healthcare may adversely affect:

•the demand for Auryxia and any products candidates for which we receive marketing approval;

•our ability to set a price that we believe is fair for our products;

•our ability to obtain and maintain coverage and reimbursement approval for Auryxia or any other approved product;

•our ability to generate revenues and achieve or maintain profitability; and

•the level of taxes that we are required to pay.

If we fail to comply with environmental, health and safety laws and regulations, we could become subject to fines or penalties or incur costs that could harm our business.

We are subject to numerous environmental, health and safety laws and regulations, including those governing laboratory procedures and the handling, use, storage, treatment and disposal of hazardous materials and wastes. Our operations involve the use of hazardous and flammable materials, including chemicals and biological materials. Our operations also produce hazardous waste products. We generally contract with third parties for the use and disposal of these materials and wastes. We cannot eliminate the risk of contamination or injury from these materials. In the event of contamination or injury resulting from the use of hazardous materials by our employees, contractors or consultants, we could be held liable for any resulting damages, and any liability could exceed our resources. We also could incur significant costs associated with civil or criminal fines and penalties for failure to comply with such laws and regulations.

Although we maintain workers’ compensation insurance to cover us for costs and expenses we may incur due to injuries to our employees resulting from the use of hazardous materials, this insurance may not provide adequate coverage against potential liabilities. We do not maintain insurance for environmental liability or toxic tort claims that may be asserted against us in connection with our storage or disposal of biological, hazardous or radioactive materials.

In addition, we may incur substantial costs in order to comply with current or future environmental, health and safety laws and regulations. These current or future laws and regulations may impair our research, development or production efforts. Our failure to comply with these laws and regulations also may result in substantial fines, penalties or other sanctions.

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Risks Related to our Reliance on Third Parties

If the licensor of certain intellectual property relating to Auryxia terminates, modifies or threatens to terminate existing contracts or relationships with us, our business may be materially harmed.

We do not own the rights to our product, Auryxia. We have licensed and sublicensed the rights, patent or otherwise, to Auryxia from a third party, Panion, who in turn licenses certain rights to Auryxia from one of the inventors of Auryxia. The license agreement with Panion, or the Panion License Agreement, requires us to meet development milestones and imposes development and commercialization due diligence requirements on us. In addition, under the license agreement, we must pay royalties based on a mid-single digit percentage of net sales of product resulting from the licensed technologies, including Auryxia, and pay the patent filing, prosecution and maintenance costs related to the license. If we do not meet our obligations in a timely manner, or if we otherwise breach the terms of our license agreement, Panion could terminate the agreement, and we would lose the rights to Auryxia. For example, following announcement of the Merger, Panion notified Keryx in writing that Panion would terminate the license agreement on November 21, 2018 if Keryx did not cure the breach alleged by Panion, specifically, that Keryx failed to use commercially reasonable best efforts to commercialize Auryxia outside the United States. Keryx disagreed with Panion’s claims, and the parties entered discussions to resolve this dispute. On October 24, 2018, prior to the consummation of the Merger, we, Keryx and Panion entered into a letter agreement, or the Panion Letter Agreement, pursuant to which Panion agreed to rescind any and all prior termination threats or notices relating to the license agreement and waived its rights to terminate the license agreement based on any breach by us of our obligation to use commercially reasonable efforts to commercialize Auryxia outside the United States until the parties executed an amendment to the license agreement in accordance with the terms of the Panion Letter Agreement, following consummation of the Merger. On April 17, 2019, we and Panion entered into an amendment and restatement of the Panion License Agreement, or the Panion Amended License Agreement, which reflects certain revisions consistent with the terms of the Panion Letter Agreement. See Note 4 to the Condensed Consolidated Financial Statements (unaudited) contained in this Quarterly Report on Form 10-Q for additional information regarding the Panion Amended License Agreement. Even though we entered into the Panion Amended License Agreement, there are no assurances that Panion will not allege other breaches of the Panion Amended License Agreement or otherwise attempt to terminate the Panion Amended License Agreement in the future.

In addition, if Panion breaches its agreement with the inventor from whom it licenses rights to Auryxia, Panion could lose its license, which could impair or delay our ability to develop and commercialize Auryxia.

From time to time, we may have disagreements with Panion, or Panion may have disagreements with the inventor from whom it licenses rights to Auryxia, regarding the terms of the agreements or ownership of proprietary rights, which could impact the commercialization of Auryxia, could require or result in litigation or arbitration, which would be time-consuming and expensive, could lead to the termination of the Panion Amended License Agreement, or force us to negotiate a revised or new license agreement on terms less favorable than the original. In addition, in the event that the owners and/or licensors of the rights we license were to enter into bankruptcy or similar proceedings, we could potentially lose our rights to Auryxia or our rights could otherwise be adversely affected, which could prevent us from continuing to commercialize Auryxia.

We rely on third parties to conduct preclinical and clinical studies for our product and product candidates. If they do not successfully carry out their contractual duties, comply with regulatory requirements or meet expected deadlines, we may not be able to optimize the commercialization of Auryxia or obtain marketing approval for or commercialize vadadustat or any other product candidates, and our business could be substantially harmed.

We do not have the ability to independently conduct preclinical and clinical trials. We are currently relying, and expect to continue to rely, on third parties, such as CROs, clinical data management organizations, medical institutions and clinical investigators, to conduct our current and future preclinical studies and our clinical trials, including our global Phase 3 development program for vadadustat. The third parties on whom we rely may fail to perform effectively, or terminate their engagement with us, for a number of reasons, including the following:

•if the quantity or accuracy of the data obtained by the third parties is compromised due to their failure to adhere to clinical trial protocols or to regulatory requirements, or if the third parties otherwise fail to comply with clinical trial protocols, perform effectively or meet expected deadlines;

•if third parties experience staffing difficulties;

•if we fail to communicate effectively or provide the appropriate level of oversight;

•if third parties undergo changes in priorities or corporate structure or become financially distressed; or

•if they form relationships with other entities, some of which may be our competitors.

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Any of these events could cause our preclinical and clinical trials, including post-approval clinical trials, to be extended, delayed, suspended, required to be repeated or terminated, or we may receive untitled warning letters or be the subject of an enforcement action which could result in our failing to obtain marketing approval of vadadustat or any other product candidates on a timely basis, or at all, or fail to maintain marketing approval of Auryxia or any other approved products, any of which would adversely affect our business operations. In addition, if the third parties on whom we rely fail to perform effectively or terminate their engagement with us, we may need to enter into alternative arrangements, which could delay, perhaps significantly, the continued optimization of the commercialization of Auryxia and the development and commercialization of vadadustat and any other product candidates.

Even though we do not directly control the third parties on whom we rely to conduct our preclinical and clinical trials and therefore cannot guarantee the satisfactory and timely performance of their obligations to us, we are nevertheless responsible for ensuring that each of our clinical trials is conducted in accordance with the applicable protocol, legal and regulatory requirements, including GXP requirements, and scientific standards, and our reliance on these third parties, including CROs, will not relieve us of our regulatory responsibilities. If we or any of our CROs, their subcontractors, or clinical trial sites fail to comply with applicable GXP requirements, the clinical data generated in our clinical trials may be deemed unreliable or insufficient, our clinical trials could be put on hold, and/or the FDA, the EMA or other regulatory authorities may require us to perform additional clinical trials before approving our marketing applications. In addition, our clinical trials must be conducted with drug product that meets certain specifications and is manufactured under applicable cGMP regulations. These requirements include, among other things, quality control, quality assurance, and the satisfactory maintenance of records and documentation.

We also rely on third parties to store and distribute drug supplies for our clinical trials. Any performance failure on the part of our distributors could delay clinical development or marketing approval of our product candidates or commercialization of our products, resulting in additional costs and depriving us of potential product revenue.

We rely on third parties to conduct all aspects of our product manufacturing. The loss of these manufacturers, their failure to supply us on a timely basis, or their failure to successfully carry out their contractual duties or comply with regulatory requirements could cause delays in our current and future capacity and substantially harm our business.

We do not have any manufacturing facilities and do not expect to independently manufacture any product or product candidates. We currently rely on third party manufacturers to produce all of our commercial, clinical and preclinical material supply. We expect to continue to rely on existing or alternative third party manufacturers to supply our ongoing and planned preclinical and clinical trials and for commercial production. Our reliance on third party manufacturers increases the risk that we will not have sufficient quantities of our product and product candidates or the ability to obtain such quantities at an acceptable cost or quality, which could delay, prevent or impair our development or commercialization efforts.

We currently have two suppliers of Auryxia’s drug substance, one of them with two approved sites, and one supplier with three approved sites for the supply of Auryxia drug product. If any of our suppliers were to limit or terminate production, or otherwise fail to meet the quality or delivery requirements needed to supply Auryxia at adequate levels, we could experience losses of revenue that could materially and adversely impact our results of operations. We have entered into supply agreements with Esteve Química, S.A. and STA Pharmaceutical Hong Kong Limited, a subsidiary of Wuxi AppTec, for the manufacture of vadadustat drug substance and Patheon Inc. for the manufacture of vadadustat drug product, each, for commercial use. While we intend to put additional supply arrangements in place for commercial manufacturing of vadadustat, we may be unsuccessful in doing so or achieving sufficient redundancy due to a number of factors, including that we may not be able to negotiate binding agreements at commercially reasonable terms. For example, a contract manufacturer may require a substantial financial commitment, including a commitment to fund the purchase of a new facility or equipment. If we are unsuccessful in implementing redundant supply arrangements for commercial quantities of vadadustat, if our commercial supply arrangements for Auryxia or vadadustat are terminated, or if any of our third party manufacturers is unable to fulfill the terms of their agreements with us, are subject to regulatory review, or cease their operations for any reason, it could result in delays to our marketing approval for vadadustat and risk that we would not have sufficient quantities of our product candidates and products for clinical trials and commercialization. Even if we are ultimately successful in entering into redundant supply arrangements for commercial manufacturing of vadadustat, the timing of such additional arrangements is uncertain.

If any of our third party manufacturers cannot or do not perform as agreed, including a misappropriation of our proprietary information, if they terminate their engagements with us, if we terminate our engagements with them, or if there is a significant disagreement, we may be forced to manufacture the materials ourselves, for which we currently do not have the capabilities or resources, or enter into agreements with other third party manufacturers, which we may not be able to do on favorable or reasonable terms, if at all. In some cases, there may be a limited number of qualified replacement manufacturers, or the technical skills, or equipment required to manufacture a product or product candidate may be unique or proprietary to the

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original manufacturer and we may have difficulty transferring such skills or technology to another third party or a feasible alternative may not exist. These factors would increase our reliance on such manufacturer or require us to obtain a license from such manufacturer in order to have another third party manufacture Auryxia or our product candidates. If we are required to change manufacturers for any reason, we will be required to verify that the new manufacturer maintains facilities and procedures that comply with quality standards and with all applicable regulations and guidelines. The delays associated with the verification of a new manufacturer could negatively affect our ability to continue to commercialize or satisfy patient demand for Auryxia or any other product candidate for which we receive marketing approval, or develop and receive marketing approval for our product candidates in a timely manner or within budget.

Each of our third party manufacturers must comply with cGMP and other stringent regulatory requirements and guidance enforced by the FDA and other regulatory authorities. These requirements include, among other things, quality control, quality assurance and the maintenance of records and documentation, which occur in addition to our own quality assurance releases. The facilities and processes used by our third party manufacturers to manufacture Auryxia may be inspected by the FDA and other regulatory authorities at any time, and the facilities and processes used by our third party manufacturers to manufacture our product candidates will be inspected by the FDA, the EMA, PMDA and other regulatory authorities prior to or after we submit our marketing application. We do not control the manufacturing processes of, and have little control over, our third party manufacturers' compliance with cGMP requirements and guidance for the manufacture of certain starting materials, drug substance and finished drug product. In addition, we have little control over the ability of our third party manufacturers to maintain adequate quality control, quality assurance and qualified personnel. Our third party manufacturers may experience problems with their manufacturing and distribution operations and processes, including, for example, quality issues, such as product specification and stability failures, procedural deviations, improper equipment installation or operation, utility failures, contamination, natural disasters and public health epidemics. We may also encounter difficulties relating to our own quality processes and procedures, including regulatory compliance, lot release, quality control and quality assurance, as well as shortages of qualified personnel. If our third party manufacturers cannot successfully manufacture material that conforms to our specifications and regulatory requirements and guidance or if we or our third party manufacturers experience manufacturing, operations and/or quality issues, we may not be able to supply patient demand or maintain marketing approval for Auryxia or secure and/or maintain marketing approval for our product candidates.

If the FDA, the EMA or other regulatory authorities do not approve the facilities being used to manufacture our product candidates, or if they withdraw any approval of the facilities being used to manufacture Auryxia or any other product candidates for which we receive marketing approval, we may need to find alternative manufacturing facilities, which would significantly impact our ability to continue commercializing Auryxia or develop, obtain marketing approval for or market our product candidates, if approved. Moreover, the failure of us or our third party manufacturers to comply with applicable regulations or guidance, or our failure to oversee or facilitate such compliance, could result in sanctions being imposed on us, including clinical holds, fines, injunctions, civil penalties, delays, suspension or withdrawal of approvals, license revocation, seizures or recalls of Auryxia or our product candidates operating restrictions, receipt of a Form 483 or warning letter, or criminal prosecutions, any of which could significantly and adversely affect the supply of Auryxia or our product candidates. For example, in the second quarter of 2020, we initiated a limited, voluntary recall of specific lots of Auryxia because it was determined that these lots were not manufactured in conformance with the FDA's GMP guidance relating to validation. In addition, we recorded a write-down of inventory associated with affected lots during the second quarter of 2020. While the costs of this recall were immaterial, should another recall occur in the future, it could result in material costs and have a material adverse effect on our business and results of operations. Also, if our starting materials, drug substance or drug product are damaged or lost while in our third party manufacturers’ control, it may impact our ability to supply our products or product candidates and we may incur significant financial harm. In addition, Auryxia and our product candidates may compete with other products and product candidates for access to third party manufacturing facilities. A third party manufacturer may also encounter delays brought on by sudden internal resource constraints, labor disputes, or shifting regulatory protocols. Certain of these third party manufacturing facilities may be contractually prohibited from manufacturing our product candidates or products, due to exclusivity provisions in agreements with our competitors. There are a limited number of manufacturers that operate under cGMP regulations and guidance and are capable of manufacturing Auryxia and our product candidates for us.

Our current and anticipated future dependence on third parties for the manufacture of Auryxia and our product candidates may adversely affect our ability to continue to commercialize Auryxia or any product candidates that receive marketing approval on a timely and competitive basis and any future profit margins.

Third party manufacturers may be unable to manufacture our product and product candidates in sufficient quality and quantity, which would delay or prevent us from commercializing approved products and developing our product candidates.

As a result of the large quantity of materials required for Auryxia production and the large quantities of Auryxia tablets that are required for our commercial success, the continued commercial viability of Auryxia depends on adequate supply of starting materials that meet quality, quantity and cost standards and the ability of our contract manufacturers to continually produce

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drug substance and finished drug product that meets all manufacturing requirements on a commercial scale. Failure to achieve and maintain these levels of supply can jeopardize and prevent the successful continued commercialization of Auryxia. Moreover, issues that may arise in any scale-up and technology transfer of Auryxia and continued commercial scale manufacture of Auryxia may lead to significant delays in our development and commercial timelines and negatively impact our financial performance. For example, a production-related issue resulted in an interruption in the supply of Auryxia in the third and fourth quarters of 2016. This supply interruption negatively impacted Keryx’s revenues in 2016. Although this supply interruption was resolved and actions designed to prevent future interruptions in the supply of Auryxia have been taken, any future supply interruptions for Auryxia or any of our product candidates for which we receive marketing approval would negatively and materially impact our reputation and financial condition.

In addition, in order to complete our development of and commercialize, if approved, vadadustat and any other product candidates, we will need to work with third party manufacturers to manufacture them in large quantities. Our current and future third party manufacturers may be unable to successfully achieve commercial scale production of vadadustat or increase the manufacturing capacity of any other product candidates for the conduct of clinical trials and commercialization in a timely or cost-effective manner, if at all. In addition, quality issues may arise during scale-up activities. Any changes in our manufacturing processes as a result of scaling up may result in the need to obtain additional marketing approvals. If our third party manufacturers are unable to achieve commercial scale production or there is a need for additional marketing approvals of vadadustat or any other product candidates, or if there are difficulties in increasing the manufacturing capacity for any other product candidates, the development, marketing approval and commercialization of that product candidate may be delayed or infeasible, or ongoing commercialization may be unsuccessful, any of which could significantly harm our business.

We do not know whether our third party manufacturers will be able to meet our demand, either because of the nature of our agreements with those third party manufacturers, or, in some cases, our limited experience with those third party manufacturers or our relative importance as a customer to those third party manufacturers. It may be difficult for us to assess their ability to timely meet our demand in the future based on past performance. While our current third party manufacturers have generally met our demand for their products on a timely basis in the past, they may subordinate our needs in the future to their other customers.

We depend on collaborations with third parties for the development and commercialization of vadadustat and Auryxia. If our collaborations are not successful or if our collaborators terminate their agreements with us, we may not be able to capitalize on the market potential of Auryxia and vadadustat, and our business could be materially harmed.

We sublicensed the rights to commercialize Riona to JT and Torii in Japan. We entered into collaboration agreements with Otsuka to develop and commercialize vadadustat in the United States, Europe, China and certain other territories. We also entered into a collaboration agreement with MTPC to develop and commercialize vadadustat in Japan and certain other Asian countries. In addition, we have a license agreement with Vifor Pharma pursuant to which we granted an exclusive license to sell vadadustat to FKC and the Third Party Dialysis Organizations, approved by us, in the United States, which license would become effective only upon the satisfaction of certain conditions. We may form or seek other strategic alliances, joint ventures, or collaborations, or enter into additional licensing arrangements with third parties that we believe will complement or augment our commercialization efforts with respect to Auryxia and our development and commercialization efforts with respect to vadadustat and any other product candidates. Our likely collaborators for any collaboration arrangements include large and mid-size pharmaceutical companies, regional and national pharmaceutical companies and biotechnology companies.

We may not be able to maintain our collaborations and our collaborations may not be successful due to a number of important factors, including the following:

•collaborators may have significant discretion in determining the efforts and resources that they will apply to these collaborations;

•collaborations may be terminated in accordance with the terms of the collaborations and, if terminated, may make it difficult for us to attract new collaborators or adversely affect how we are perceived in scientific and financial communities, and may result in a need for additional capital and expansion of our internal capabilities to pursue further development or commercialization of the applicable products and product candidates;

•if permitted by the terms of the collaborations, collaborators may elect not to continue or renew development or commercialization programs based on clinical trial results, changes in their strategic focus, availability of funding or other external factors such as a business combination that diverts resources or creates competing priorities;

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•if permitted by the terms of the collaborations, collaborators may delay clinical trials, provide insufficient funding for a clinical trial program, stop a clinical trial, abandon a product candidate, repeat or conduct new clinical trials or require a new formulation of a product candidate for clinical testing;

•a collaborator with marketing and distribution rights to our products may not commit sufficient resources to their marketing and distribution;

•if permitted by the terms of the collaboration, we and our collaborator may have a difference of opinion regarding the development or commercialization strategy for a particular product, and our collaborator may have ultimate decision making authority;

•disputes may arise between a collaborator and us that cause the delay or termination of activities related to research, development or commercialization of Auryxia, vadadustat and any other product candidates, or that result in costly litigation or arbitration that diverts management attention and resources;

•collaborations may not lead to development or commercialization of products and product candidates in the most efficient manner or at all;

•a significant change in the senior management team, a change in the financial condition or a change in the business operations, including a change in control or internal corporate restructuring, of any of our collaborators, could result in delayed timelines, re-prioritization of our programs, decreasing resources or funding allocated to support our programs, or termination of the collaborations; and

•collaborators may not comply with all applicable regulatory requirements.

If any of these events occurs, the market potential of our products and product candidates could be reduced, and our business could be materially harmed. We also cannot be certain that, following a collaboration, the benefits of the collaboration will outweigh the potential risks.

We may seek to establish additional collaborations and, if we are not able to establish them on commercially reasonable terms, we may have to alter our development and commercialization plans.

We will require substantial additional cash to fund the continued commercialization of Auryxia and the development and potential commercialization of vadadustat and any other product candidates. We may decide to enter into additional collaborations for the development and commercialization of vadadustat or Auryxia. Any of these relationships may require us to incur non-recurring and other charges, increase our near and long-term expenditures, issue securities that dilute our existing stockholders, or disrupt our management and business.

We may not be successful in entering into additional collaborations as a result of many factors including the following:

•competition in seeking appropriate collaborators;

•a reduced number of potential collaborators due to recent business combinations in the pharmaceutical industry;

•inability to negotiate collaborations on acceptable terms;

•inability to negotiate collaborations on a timely basis;

•a potential collaborator’s evaluation of our product or product candidates;

•a potential collaborator’s resources and expertise; and

•restrictions due to an existing collaboration agreement.

If we are unable to enter into additional collaborations, we may have to curtail the commercialization of the product or the development of the product candidate on which we are seeking to collaborate, reduce or delay its development program or other of our other development programs, delay its potential commercialization or reduce the scope of any sales or marketing activities, or increase our expenditures and undertake development or commercialization activities at our own expense. If we elect to increase our expenditures to fund development or commercialization activities on our own, we may need to obtain additional capital, which may not be available to us on acceptable terms or at all. If we do not have sufficient funds, we may not be able to further commercialize Auryxia or develop or commercialize our product candidates.

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Even if we enter into additional collaboration agreements and strategic partnerships or license our intellectual property, we may not be able to maintain them or they may be unsuccessful, which could delay our timelines or otherwise adversely affect our business.

We may incur losses as a result of unforeseen or catastrophic events, including the emergence of a pandemic, terrorist attacks, extreme weather events or other natural disasters.

The occurrence of unforeseen or catastrophic events, including the emergence of a pandemic, such as COVID-19 discussed above, or other widespread health emergency (or concerns over the possibility of such an emergency), terrorist attacks, extreme terrestrial or solar weather events or other natural disasters, could create economic and financial disruptions, and could lead to operational difficulties that could impair our ability to manage our businesses or result in reduced sales or delays in our clinical studies, which could have a material adverse effect on our financial results. If we or any of the third parties with whom we engage were to experience shutdowns or other business disruptions, our ability to conduct our business in the manner and on the timelines presently planned could be materially and negatively impacted, which could have a material adverse effect on our business and our financial results.

Risks Related to our Intellectual Property

If we are unable to adequately protect our intellectual property, third parties may be able to use our intellectual property, which could adversely affect our ability to compete in the market.

Our commercial success will depend in part on our ability, and the ability of our licensors, to obtain and maintain patent protection on our drug product and technologies, and to successfully defend these patents against third party challenges. We seek to protect our proprietary products and technology by filing patent applications in the United States and certain foreign jurisdictions. The process for obtaining patent protection is expensive and time consuming, and we may not be able to file and prosecute all necessary or desirable patent applications in a cost effective or timely manner. In addition, we may fail to identify patentable subject matter early enough to obtain patent protection. Further, license agreements with third parties may not allow us to control the preparation, filing and prosecution of patent applications, or the maintenance or enforcement of patents. Such third parties may decide not to enforce such patents or enforce such patents without our involvement. Thus, these patent applications and patents may not under these circumstances, be prosecuted or enforced in a manner consistent with the best interests of the company.

Our pending patent applications may not issue as patents and may not issue in all countries in which we develop, manufacture or potentially sell our product(s) or in countries where others develop, manufacture and potentially sell products using our technologies. Moreover, our pending patent applications, if issued as patents, may not provide additional protection for our product.

The patent positions of pharmaceutical and biotechnology companies can be highly uncertain and involve complex legal and factual questions. No consistent policy regarding the breadth of claims allowed in pharmaceutical and biotechnology patents has emerged to date. Changes in the patent laws or the interpretation of the patent laws in the United States and other jurisdictions may diminish the value of our patents or narrow the scope of our patent protection. Accordingly, the patents we own or license may not be sufficiently broad to prevent others from practicing our technologies or from developing competing products. Furthermore, others may independently develop similar or alternative drug products or technologies or design around our patented drug product and technologies which may have an adverse effect on our business. If our competitors prepare and file patent applications in the United States that claim technology also claimed by us, we may have to participate in interference or derivation proceedings in front of the U.S. Patent and Trademark Office, or USPTO, to determine priority of invention, which could result in substantial cost, even if the eventual outcome is favorable to us. Because of the extensive time required for development, testing and regulatory review of a potential product, it is possible that any related patent may expire prior to, or remain in existence for only a short period following, commercialization, thus reducing any advantage of the patent. The patents we own or license may be challenged or invalidated or may fail to provide us with any competitive advantage. Since we have licensed or sublicensed many patents from third parties, we may not be able to enforce such licensed patents against third party infringers without the cooperation of the patent owner and the licensor, which may not be forthcoming. In addition, we may not be successful or timely in obtaining any patents for which we submit applications.

Additionally, the laws of foreign countries may not protect our intellectual property rights to the same extent as do the laws of the United States. For example, claims in a patent application directed to methods of treatment of the human body are not patentable or are restricted in many non-U.S. countries. Further, we may not pursue or obtain patent protection in all major markets. In addition, in jurisdictions outside the United States where we own or license patent rights, we may be unable to prevent unlicensed parties from selling or importing products or technologies derived elsewhere using our proprietary technology.

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Generally, the first to file a patent application is entitled to the patent if all other requirements of patentability are met. However, prior to March 16, 2013, in the United States, the first to invent was entitled to the patent. Since publications of discoveries in the scientific literature often lag behind the actual discoveries, and patent applications in the United States and other jurisdictions are typically not published until 18 months after filing, or in some cases not at all, we cannot know with certainty whether we were the first to make the inventions claimed in our patents or pending patent applications, or that we were the first to file for patent protection of such inventions. Moreover, the laws enacted by the Leahy-Smith America Invents Act of 2011, or the Act, which reformed certain patent laws in the United States, introduce procedures that permit competitors to challenge our patents in the USPTO after grant, including inter partes review and post grant review. Similar laws exist outside of the United States. The laws of the European Patent Convention, for example, provide for post-grant opposition procedures that permit competitors to challenge, or oppose, our European patents administratively at the European Patent Office.

In July 2011, a third party filed an opposition to our issued European patents, European Patent No. 2044005, or the ’005 EP Patent, which covers vadadustat. During the oral proceedings, which took place on April 10, 2013, the Opposition Division of the European Patent Office decided to maintain certain claims of the patent directed to a compound chosen from a group of eight compounds, including vadadustat, as well as claims to compositions and methods for treating various diseases including, but not limited to, anemia. Both parties appealed the decision of the Opposition Division. On February 27, 2018, we withdrew the ’005 EP Patent from appeal and filed a divisional patent application to pursue a focused claim set that includes claims for vadadustat, as well as pharmaceutical compositions and methods of treating anemia. We cannot be assured that such claims in the divisional application will be granted by the European Patent Office. If such claims are not granted, or the scope of the claims is significantly narrowed, we may not be able to adequately protect our rights, provide sufficient exclusivity, or preserve our competitive advantage.

We may become involved in addressing patentability objections based on third party submission of references, or we may become involved in defending our patent rights in oppositions, derivation proceedings, reexamination, inter partes review, post grant review, interference proceedings or other patent office proceedings or litigation, in the United States or elsewhere, challenging our patent rights or the patent rights of others. An adverse result in any such proceeding or litigation could reduce the scope of, or invalidate, our patent rights, allow third parties to commercialize our technology or products and compete directly with us, without payment to us.

The issuance of a patent is not conclusive as to its inventorship, scope, validity or enforceability, and our owned and licensed patents may be challenged on such a basis in the courts or patent offices in the United States and abroad. As a result of such challenges, we may lose exclusivity or freedom-to-operate or patent claims may be narrowed, invalidated or held unenforceable, in whole or in part, which could limit our ability to prevent third parties from using or commercializing similar or identical products, or limit the duration of the patent protection for our products.

In addition, patents protecting our product candidate might expire before or shortly after such candidate is commercialized. Thus, our patent portfolio may not provide sufficient rights to exclude others from commercializing products similar or identical to ours.

We also rely on trade secrets and know-how to protect our intellectual property where we believe patent protection is not appropriate or obtainable. Trade secrets are difficult to protect. While we require our employees, licensees, collaborators and consultants to enter into confidentiality agreements, this may not be sufficient to adequately protect our trade secrets or other proprietary information. In addition, we share ownership and publication rights to data relating to our drug product and technologies with our research collaborators and scientific advisors. If we cannot maintain the confidentiality of this information, our ability to receive patent protection or protect our trade secrets or other proprietary information will be at risk.

The intellectual property and related non-patent exclusivity that we own or have licensed relating to our product, Auryxia, is limited, which could adversely affect our ability to compete in the market and adversely affect the value of Auryxia.

The patent rights and related non-patent exclusivity that we own or have licensed relating to Auryxia are limited in ways that may affect our ability to exclude third parties from competing against us. For example, a third party may design around our owned or licensed composition of matter patent claims or not market a product for methods of use covered by our owned or licensed patents.

Obtaining proof of direct infringement by a competitor for a method of use patent requires us to demonstrate that the competitors make and market a product for the patented use(s). Alternatively, we can prove that our competitors induce or contribute to others in engaging in direct infringement. Proving that a competitor contributes to, or induces, infringement of a

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patented method by another has additional proof requirements. For example, proving inducement of infringement requires proof of intent by the competitor. If we are required to defend ourselves against claims or to protect our own proprietary rights against others, it could result in substantial costs to us and the distraction of our management. An adverse ruling in any litigation or administrative proceeding could prevent us from marketing and selling Auryxia, increase the risk that a generic or other similar version of Auryxia could enter the market to compete with Auryxia, limit our development and commercialization of Auryxia, or otherwise harm our competitive position and result in additional significant costs. In addition, any successful claim of infringement asserted against us could subject us to monetary damages or injunction, which could prevent us from making or selling Auryxia. We also may be required to obtain licenses to use the relevant technology. Such licenses may not be available on commercially reasonable terms, if at all.

Moreover, physicians may prescribe a competitive identical product for indications other than the one for which the product has been approved, or “off-label” indications, that are covered by the applicable patents. Although such off-label prescriptions may directly infringe or contribute to or induce infringement of method of use patents, such infringement is difficult to prevent.

In addition, any limitations of our patent protection described above may adversely affect the value of our drug product and may inhibit our ability to obtain a collaboration partner at terms acceptable to us, if at all.

In the United States, the FDA has the authority to grant additional regulatory exclusivity protection for approved drugs where the sponsor conducts specified testing in pediatric or adolescent populations. If granted, this pediatric exclusivity may provide an additional six months which are added to the term of any non-patent exclusivity that has been awarded as well as to the regulatory protection related to the term of a relevant patent, to the extent these protections have not already expired.

In addition to patent protection, we may utilize, if granted by the FDA, pediatric exclusivity or other provisions of the FDCA such as new chemical entity, or NCE, exclusivity, or exclusivity for a new use or new formulation, to provide non-patent exclusivity for a drug product. The FDCA provides a five-year period of non-patent exclusivity within the United States to the first applicant to gain approval of a new drug application, or NDA, for an NCE. A drug is an NCE if the FDA has not previously approved any other new drug containing the same active moiety, which consists of the molecule(s) or ion(s) responsible for the action of the drug substance (but not including those portions of the molecule that cause it to be a salt or ester or which are not bound to the molecule by covalent or similar bonds). During the exclusivity period, the FDA may not accept for review an ANDA or a 505(b)(2) NDA submitted by another company for another version of such drug where the applicant does not own or have a legal right of reference to all the data required for approval. However, an ANDA or 505(b)(2) NDA that references an NDA product with NCE exclusivity may be submitted after four years if it contains a certification of patent invalidity or non-infringement. The FDCA also provides three years of exclusivity for an NDA, 505(b)(2) NDA or supplement to an existing NDA if new clinical investigations, other than bioavailability studies, that were conducted or sponsored by the applicant are deemed by the FDA to be essential to the approval of the application (for example, for new indications, dosages, or strengths of an existing drug). This three-year exclusivity covers only the conditions associated with the new clinical investigations and does not prohibit the FDA from approving ANDAs for drugs containing the original active agent. The three-year exclusivity period, unlike five-year exclusivity, does not prevent the submission of a competing ANDA or 505(b)(2) NDA. Instead, it only prevents the FDA from granting final approval to such a product until expiration of the exclusivity period. Five-year and three-year exclusivity will not delay the submission (in the case of five-year exclusivity) or the approval (in the case of three-year exclusivity) of a full NDA submitted under section 505(b)(1) of the FDCA; however, an applicant submitting a full NDA would be required to conduct all of its own studies needed to independently support a finding of safety and effectiveness for the proposed product, or have a full right of reference to all studies not conducted by the applicant.

On August 23, 2018, Keryx submitted a Citizen Petition requesting, inter alia, that FDA recognize that Auryxia is eligible for five years of new chemical entity, or NCE, exclusivity based on its novel active ingredient and for three years exclusivity for the IDA Indication. On January 19, 2019, FDA responded that Auryxia is eligible for a three-year exclusivity period for the IDA Indication, which expires on November 6, 2020. FDA, however, denied the NCE exclusivity based on its determination that Auryxia contains a previously-approved active moiety (ferric cation). FDA’s decision on the Citizen Petition is subject to further review both within FDA and in the courts. On February 21, 2019, we filed a Petition for Reconsideration of FDA’s decision on the NCE determination for Auryxia.

The FDA’s determination as to whether to grant NCE exclusivity to Auryxia may also affect the timing of the 30 month stay barring FDA from granting final approval to generic versions of Auryxia. When an ANDA applicant has provided a Paragraph IV certification to the FDA, the applicant must also send notice of the Paragraph IV certification to the NDA and patent holders once the ANDA has been accepted for filing by the FDA. The NDA and patent holders may then initiate a patent infringement lawsuit in response to the notice of the Paragraph IV certification. The filing of a patent infringement lawsuit within 45 days after the receipt of a Paragraph IV certification automatically prevents the FDA from approving the ANDA until the earlier of 30 months after the receipt of the Paragraph IV notice, expiration of the patent, or a decision in the infringement case that is

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favorable to the ANDA applicant. We have received Paragraph IV certification notice letters regarding ANDAs submitted to the FDA, from generic drug manufacturers requesting approval for generic versions of Auryxia tablets (210 mg iron per tablet), have filed certain complaints for patent infringement relating to such ANDAs, and have entered into settlement and license agreements with certain such ANDA filers. See Part II, Item 1. Legal Proceedings for further information relating to the ANDAs, lawsuits and settlements.

In cases where NCE exclusivity has been granted to a new drug product, the 30-month stay triggered by such litigation is extended by the amount of time such that 7.5 years will elapse from the date of approval of the NDA for that product. Without NCE exclusivity, the 30-month stay on FDA final approval of an ANDA runs from the date on which the sponsor of the reference listed drug receives notice of a Paragraph IV certification from the ANDA applicant.

We cannot assure that Auryxia or any drug candidates we may acquire or in-license will obtain such pediatric exclusivity, NCE exclusivity or any other market exclusivity in the United States, EU or any other territory, or that we will be the first to receive the respective regulatory approval for such drugs so as to be eligible for any non-patent exclusivity protection. We also cannot assure that Auryxia or any drug candidates we may acquire or in-license will obtain patent term extension.

Our reliance on third parties requires us to share our trade secrets, which increases the possibility that a competitor will discover them or that our trade secrets will be misappropriated or disclosed.

Because we rely on third parties to assist with research, development and manufacture of our product candidates, we must, at times, share trade secrets with them. We seek to protect our proprietary technology in part by entering into confidentiality agreements and, if applicable, services agreements, material transfer agreements, consulting agreements, research agreements or other similar agreements with our advisors, employees, third party contractors, collaborators and consultants prior to beginning research or disclosing proprietary information. These agreements typically limit the rights of the third parties to use or disclose our confidential information, including our trade secrets. Despite the contractual provisions employed when working with third parties, the need to share trade secrets and other confidential information increases the risk that such information becomes known by our competitors, is inadvertently incorporated into the technology of others, or is disclosed or used in violation of these agreements. Given that our proprietary position is based, in part, on our know-how and trade secrets, a competitor’s discovery of our trade secrets or other unauthorized use or disclosure would impair our competitive position and may have a material adverse effect on our business.

In addition, these agreements typically restrict the ability of our advisors, employees, third party contractors, and consultants to publish data potentially relating to our trade secrets, although our agreements may contain certain limited publication rights. For example, any academic institution with which we may collaborate will usually expect to be granted rights to publish data arising out of such collaboration. We often grant such rights, provided that we are notified in advance and given the opportunity to delay publication for a limited time period in order for us to secure patent protection of intellectual property rights arising from the collaboration and remove confidential or trade secret information from any such publication. In the future, we may also conduct joint research and development programs that may require us to share trade secrets under the terms of our research and development or similar agreements. Despite our efforts to protect our trade secrets, our competitors may discover our trade secrets, either through breach of our agreements with third parties or independent development or disclosure or publication of information by any of our employees, advisors, consultants, third party contractors or collaborators. A competitor’s discovery of our trade secrets would impair our competitive position and have an adverse impact on our business.

Litigation or third party claims of intellectual property infringement may be costly and time consuming and may delay or harm our drug discovery, development and commercialization efforts.

We may be forced to initiate litigation to enforce our contractual and intellectual property rights, or we may be sued by third parties asserting claims based on contract, tort or intellectual property infringement. In addition, third parties may have or may obtain patents in the future and claim that our product or any other technologies infringe their patents. If we are required to defend against suits brought by third parties, or if we sue third parties to protect our rights, we may be required to pay substantial litigation costs, and our management’s attention may be diverted from operating our business. In addition, any legal action against our licensor, licensees or us that seeks damages or an injunction of commercial activities relating to Auryxia, vadadustat or any other product candidates or other technologies could subject us to monetary liability, a temporary or permanent injunction preventing the development, marketing and sale of such products or such technologies, and/or require our licensor, licensees or us to obtain a license to continue to use such products or other technologies. We cannot predict whether our licensor, licensees or we would prevail in any of these types of actions or that any required license would be made available on commercially acceptable terms, if at all.

Our commercial success depends in part on our avoiding infringement of the patents and proprietary rights of third parties. The pharmaceutical and biotechnology industries are characterized by extensive litigation over patent and other intellectual property

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rights. We have in the past and may in the future become a party to, or be threatened with, future adversarial litigation or other proceedings regarding intellectual property rights with respect to our drug candidates. As the pharmaceutical and biotechnology industries expand and more patents are issued, the risk increases that our drug candidates may give rise to claims of infringement of the patent rights of others.

While our product candidates are in preclinical studies and clinical trials, we believe that the use of our product candidates in these preclinical studies and clinical trials in the United States falls within the scope of the exemptions provided by 35 U.S.C. Section 271(e), which provides that it shall not be an act of infringement to make, use, offer to sell, or sell within the United States or import into the United States a patented invention solely for uses reasonably related to the development and submission of information to the FDA. As a result of the Merger, our portfolio now includes a commercial product, Auryxia. Consequently, there is an increased possibility of a patent infringement claim against us. We attempt to ensure that our product candidates and the methods we employ to manufacture them, as well as the methods for their use which we intend to promote, do not infringe other parties’ patents and other proprietary rights. There can be no assurance they do not, however, and competitors or other parties may assert that we infringe their proprietary rights in any event.

Third parties may hold or obtain patents or other intellectual property rights and allege in the future that the use of our products or product candidates infringes these patents or intellectual property rights, or that we are employing their proprietary technology without authorization. We do not believe that there are any currently issued U.S. patents that will prevent us from commercializing Auryxia or vadadustat; nor do we make any admission that any of such patents are valid, enforceable or infringed. Under U.S. law, a party may be able to patent a discovery of a new way to use a previously known compound, even if such compound itself is patented, provided the newly discovered use is novel and nonobvious. Such a method-of-use patent, however, if valid, only protects the use of a claimed compound for the specified methods claimed in the patent. This type of patent does not prevent persons from using the compound for any previously known use of the compound. Further, this type of patent does not prevent persons from making and marketing the compound for an indication that is outside the scope of the patented method. We are not aware of any valid U.S. patents issued to FibroGen, or any other person, that claim methods of using any of our product candidates for purposes of inhibiting hypoxia-inducible factor prolyl hydroxylases, or HIF-PHs, for the treatment of anemia due to CKD. For example, we are aware of certain patents that have been acquired by FibroGen directed to certain heterocyclic carboxamide compounds that are described as inhibitors of prolyl-4-hydroxylase. Those patents, however, are believed to have expired as of December 2014.

FibroGen has also filed other patent applications in the United States and other countries directed to purportedly new methods of using such previously known heterocyclic carboxamide compounds for purposes of treating or affecting specified conditions, and some of these applications have since issued as patents. To the extent any such patents issue or have been issued, we may initiate opposition or other legal proceedings with respect to such patents. We discuss the status of the opposition and/or invalidation proceedings against certain FibroGen patents in Part II, Item 1. Legal Proceedings of this Quarterly Report on Form 10-Q.

There may be other patents of FibroGen or patents of other third parties of which we are currently unaware with claims to compounds, materials, formulations, methods of manufacture or methods for treatment related to the use or manufacture of our drug candidates. Also, because patent applications can take many years to issue, there may be currently pending patent applications which may later result in issued patents that our product candidates may infringe.

Third parties, including FibroGen, may in the future claim that our product candidates and other technologies infringe upon their patents and may challenge our ability to commercialize vadadustat. Parties making claims against us or our licensees may seek and obtain injunctive or other equitable relief, which could effectively block our or their ability to continue to commercialize Auryxia or further develop and commercialize vadadustat or any other product candidates. If any third party patents were held by a court of competent jurisdiction to cover the manufacturing process of any of our products or product candidates, any molecules formed during the manufacturing process or any final product itself, the holders of any such patents may be able to block our ability to commercialize such product or product candidate unless we obtained a license under the applicable patents, or until such patents expire or they are finally determined to be held invalid or unenforceable. Similarly, if any third party patent were held by a court of competent jurisdiction to cover aspects of our formulations, processes for manufacture or our intended methods of use, including patient selection methods, the holders of any such patent may be able to block or impair our ability to develop and commercialize the applicable product candidate unless we obtained a license or until such patent expires or is finally determined to be held invalid or unenforceable. We may also elect to enter into a license in order to settle litigation or in order to resolve disputes prior to litigation. Furthermore, even in the absence of litigation, we may need to obtain licenses from third parties to advance our research or allow commercialization of our products or product candidates. Should a license to a third party patent become necessary, we cannot predict whether we would be able to obtain a license or, if a license were available, whether it would be available on commercially reasonable terms. If such a license is necessary and a license under the applicable patent is unavailable on commercially reasonable terms, or at all, our ability to

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commercialize our products or product candidates may be impaired or delayed, which could in turn significantly harm our business.

Further, defense of infringement claims, regardless of their merit, would involve substantial litigation expense and would be a substantial diversion of employee resources from our business. In the event of a successful claim of infringement against us, we may have to pay substantial damages, including treble damages and attorneys’ fees for willful infringement, pay royalties or redesign our products, which may be impossible or require substantial time and monetary expenditure.

We are currently involved in patent infringement lawsuits and opposition and invalidity proceedings and may in the future be involved in additional lawsuits or administrative proceedings to challenge the patents of our competitors or to protect or enforce our patents, which could be expensive, time consuming, and unsuccessful.

Competitors may infringe our patents or misappropriate our trade secrets or confidential information. To counter infringement or unauthorized use, we may be required to file infringement or misappropriation claims, which can be expensive and time-consuming. We may not be able to prevent infringement of our patents or misappropriation of our trade secrets or confidential information, particularly in countries where the laws may not protect those rights as fully as in the United States. In addition, in an infringement proceeding, a court may decide that a patent of ours is not valid or is unenforceable, or may refuse to stop the other party from using the technology at issue on the grounds that our patents do not cover the technology in question. An adverse result in any litigation or defense proceedings could put one or more of our patents at risk of being invalidated, held unenforceable, or interpreted narrowly and held not infringed and could put our patent applications at risk of not issuing.

In addition, there may be a challenge or dispute regarding inventorship or ownership of patents or applications currently identified as being owned by or licensed to us. Defense of these claims, regardless of their merit, would involve substantial litigation expense and would be a substantial diversion of employee resources from our business. Interference proceedings provoked by third parties or brought by the USPTO may be necessary to determine the priority of inventions with respect to our patents or patent applications.

Various administrative proceedings are also available for challenging patents, including interference, reexamination, inter partes review, and post-grant review proceedings before the USPTO or oppositions and other comparable proceedings in foreign jurisdictions. An unfavorable outcome in any current or future proceeding in which we are challenging third party patents could require us to cease using the patented technology or to attempt to license rights to it from the prevailing party. Our business could be harmed if the prevailing party does not offer us a license on commercially reasonable terms or at all. Even if we are successful, participation in interference or other administrative proceedings before the USPTO or a foreign patent office may result in substantial costs and distract our management and other employees.

For example, we are currently involved in patent infringement lawsuits against several generic companies in the federal district courts.  In addition, we are currently involved in opposition or invalidation proceedings in the European Patent Office, the Japan Patent Office, the Canadian Federal Court and the United Kingdom Patents Court. These proceedings may be ongoing for a number of years and may involve substantial expense and diversion of employee resources from our business. In addition, we may become involved in additional opposition proceedings or other legal or administrative proceedings in the future. For more information, see the other risk factors under “Risks Related to our Intellectual Property” and Part II, Item 1. Legal Proceedings of this Quarterly Report on Form 10-Q.

Furthermore, because of the substantial amount of discovery required in connection with intellectual property litigation and some administrative proceedings, there is a risk that some of our confidential information could be compromised by disclosure during discovery. In addition, there could be public announcements of the results of hearings, motions or other interim proceedings or developments. If securities analysts or investors perceive these results to be negative, it could have a substantial adverse effect on the price of our common stock.

Obtaining and maintaining our patent protection depends on compliance with various procedural, document submission, fee payment and other requirements imposed by governmental patent agencies, and our patent protection could be reduced or eliminated for non-compliance with these requirements.

Periodic maintenance fees on any issued patent are due to be paid to the USPTO and foreign patent agencies in several stages over the lifetime of the patent. The USPTO and governmental patent agencies in other jurisdictions also require compliance with a number of procedural, documentary, fee payment (such as annuities) and other similar provisions during the patent application process. While an inadvertent lapse in many cases can be cured by payment of a late fee or by other means in accordance with the applicable rules, there are situations in which non-compliance can result in abandonment or lapse of the patent or patent application, resulting in partial or complete loss of patent rights in the relevant jurisdiction. Non-compliance events that could result in abandonment or lapse of a patent or patent application include, but are not limited to, failure to respond to official actions within prescribed time limits, non-payment of fees, and failure to properly legalize and submit formal

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documents. In such an event, our competitors might be able to enter the market, which would have a material adverse effect on our business.

We may be subject to claims that our employees, consultants or independent contractors have wrongfully used or disclosed confidential information of third parties.

We have received confidential and proprietary information from potential collaborators, prospective licensees and other third parties. In addition, we employ individuals who were previously employed at other biotechnology or pharmaceutical companies. We may be subject to claims that we or our employees, consultants or independent contractors have inadvertently or otherwise used or disclosed confidential information of these third parties or our employees’ former employers. We may also be subject to claims that former employees, collaborators or other third parties have an ownership interest in our patents or other intellectual property. We may be subject to ownership disputes in the future arising, for example, from conflicting obligations of consultants or others who are involved in developing our product candidates. Litigation may be necessary to defend against these claims. If we fail in defending any such claims, in addition to paying monetary damages, we may lose valuable intellectual property rights, such as exclusive ownership of, or right to use, valuable intellectual property. Such an outcome could have a material adverse effect on our business. Even if we are successful in defending against these claims, litigation could result in substantial cost and be a distraction to our management and employees.

We may not be able to protect our intellectual property rights throughout the world.

Filing, prosecuting and defending patents on our product candidates in all countries throughout the world would be prohibitively expensive. Consequently, the breadth of our intellectual property rights in some countries outside the United States may be less extensive than those in the United States. In addition, the laws of some countries do not protect intellectual property rights to the same extent as laws in the United States. As a result, we may not be able to prevent third parties from practicing our inventions in all countries outside the United States, or from selling or importing products made using our inventions in and into the United States or other countries. Competitors may use our technologies in countries where we have not obtained patent protection to develop their own products and, further, may infringe our patents in territories where we have patent protection, but enforcement is not as strong as in the United States. These products may compete with our products and our patents or other intellectual property rights may not be effective or sufficient to prevent them from competing.

Many companies have encountered significant problems in protecting and defending intellectual property rights in certain countries. The legal systems of certain countries, particularly certain developing countries, do not favor the enforcement of patents, trade secrets and other intellectual property, particularly those relating to pharmaceutical and biotechnology products, which could make it difficult for us to stop the infringement of our patents or marketing of competing products in violation of our proprietary rights generally. Proceedings to enforce our patent rights in countries outside of the United States could result in substantial costs and divert our efforts and attention from other aspects of our business, could put our patents at risk of being invalidated or interpreted narrowly and our patent applications at risk of not issuing, and could provoke third parties to assert claims against us. We may not prevail in any lawsuits that we initiate and the damages or other remedies awarded, if any, may not be commercially meaningful. Accordingly, our efforts to enforce our intellectual property rights around the world may be inadequate to obtain a significant commercial advantage from the intellectual property that we develop or license.

Risks Related to our Business and Industry

If we fail to attract, keep and motivate senior management and key personnel, we may be unable to successfully develop vadadustat and commercialize Auryxia.

Recruiting and retaining qualified scientific, clinical, medical, manufacturing and sales and marketing personnel is critical to our success. We are also highly dependent on our executives, certain members of our senior management and certain members of our commercial organization. The loss of the services of our executives, senior managers or other key employees, including employees in our commercial organization, could impede the achievement of our research, development and commercialization objectives and seriously harm our ability to successfully implement our business strategy. Losing such key personnel subjects us to a number of risks, including the failure to coordinate responsibilities and tasks, the necessity to create new management systems and processes, the impact on corporate culture, and the retention of historical knowledge. Furthermore, replacing executives, senior managers and other key employees may be difficult and may take an extended period of time because of the limited number of individuals in our industry with the breadth of skills and experience required to successfully develop, gain marketing approval of and commercialize products. Our future financial performance and our ability to develop and commercialize our products and product candidates and to compete effectively will depend, in part, on our ability to manage any future growth effectively. To that end, we must be able to hire, train, integrate, and retain additional personnel with sufficient experience. We may be unable to hire, train, retain or motivate these key personnel on acceptable terms given the intense competition among numerous biopharmaceutical companies for similar personnel, particularly in our geographic region.

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We also experience competition for the hiring of personnel from universities and research institutions. In addition, we rely on contractors, consultants and advisors, including scientific and clinical advisors, to assist us in formulating and executing our research and development and commercialization strategy. Our contractors, consultants and advisors may become employed by companies other than ours and may have commitments with other entities that may limit their availability to us. If we are unable to continue to attract and retain high quality personnel, our ability to grow and pursue our business strategy will be limited.

We may expend our limited resources to pursue a particular product, product candidate or indication and fail to capitalize on products, product candidates or indications that may be more profitable or for which there is a greater likelihood of success.

Because we have limited financial and managerial resources, we focus on products, research programs and product candidates for specific indications. As a result, we may forgo or delay pursuit of opportunities with other product candidates or for other indications that later prove to have greater commercial potential. Our resource allocation decisions may cause us to fail to capitalize on viable commercial products or profitable market opportunities. Our spending on current and future research and development programs and product candidates for specific indications may not yield any commercially viable products. If we do not accurately evaluate the commercial potential or target market for a particular product candidate, we may relinquish valuable rights to that product candidate through collaboration, licensing or other royalty arrangements in cases in which it would have been more advantageous for us to retain sole development and commercialization rights to such product candidate.

Security breaches and unauthorized use of our IT systems and information, or the IT systems or information in the possession of our collaborators and other third parties, could damage the integrity of our clinical studies, impact our regulatory filings, compromise our ability to protect our intellectual property, and subject us to regulatory actions that could result in significant fines or other penalties.

We, our collaborators, contractors and other third parties rely significantly upon information technology, and any failure, inadequacy, interruption or security lapse of that technology, including any cyber security incidents, could harm our ability to operate our business effectively. In addition, we and our collaborators, contractors and other third parties rely on information technology networks and systems, including the Internet, to process, transmit and store clinical trial data, patient information, and other electronic information, and manage or support a variety of business processes, including operational and financial transactions and records, personal identifying information, payroll data and workforce scheduling information. We purchase some of our information technology from vendors, on whom our systems depend. We rely on commercially available systems, software, tools and monitoring to provide security for the processing, transmission and storage of company and customer information.

In the ordinary course of our business, we and our third party contractors maintain personal and other sensitive data on our and their respective networks, including our intellectual property and proprietary or confidential business information relating to our business and that of our clinical trial subjects and business partners. In particular, we rely on CROs and other third parties to store and manage information from our clinical trials. We also rely on third parties to manage patient information for Auryxia. The secure maintenance of this sensitive information is critical to our business and reputation.

Companies and other entities and individuals have been increasingly subject to a wide variety of security incidents, cyber-attacks and other attempts to gain unauthorized access to systems and information. These threats can come from a variety of sources, ranging in sophistication from individual hackers to state-sponsored attacks. Cyber threats may be broadly targeted, or they may be custom-crafted against our information systems or those of our vendors or third party service providers. A security breach, cyber-attack or unauthorized access of our clinical data or other data could damage the integrity of our clinical trials, impact our regulatory filings, cause significant risk to our business, compromise our ability to protect our intellectual property, and subject us to regulatory actions, including under the GDPR and CCPA discussed elsewhere in these risk factors and the privacy or security rules under federal, state, or other local laws outside of the United States protecting confidential or personal information, that could be expensive to defend and could result in significant fines or other penalties. Cyber-attacks can include malware, computer viruses, hacking or other unauthorized access or other significant compromise of our computer, communications and related systems. Although we take steps to manage and avoid these risks and to be prepared to respond to attacks, our preventive and any remedial actions may not be successful and no such measures can eliminate the possibility of the systems’ improper functioning or the improper access or disclosure of confidential or personally identifiable information such as in the event of cyber-attacks. Security breaches, whether through physical or electronic break-ins, computer viruses, ransomware, impersonation of authorized users, attacks by hackers or other means, can create system disruptions or shutdowns or the unauthorized disclosure of confidential information.

Likewise, although we believe our collaborators, vendors and service providers, such as our CROs, take steps to manage and avoid information security risks and respond to attacks, we may be vulnerable to attacks against our collaborators, vendors or service providers, and we may not have adequate contractual remedies against such collaborators, vendors and service providers

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in such event. Additionally, outside parties may attempt to fraudulently induce employees, collaborators, or other contractors to disclose sensitive information or take other actions, including making fraudulent payments or downloading malware, by using “spoofing” and “phishing” emails or other types of attacks.  Our employees may be targeted by such fraudulent activities. Outside parties may also subject us to distributed denial of services attacks or introduce viruses or other malware through “trojan horse” programs to our users’ computers in order to gain access to our systems and the data stored therein. In the recent past, cyber-attacks have become more prevalent and much harder to detect and defend against and, because the techniques used to obtain unauthorized access, disable or degrade service, or sabotage systems change frequently and continuously become more sophisticated, often are not recognized until launched against a target and may be difficult to detect for a long time, we may be unable to anticipate these techniques or to implement adequate preventive or detective measures, and we might not immediately detect such incidents and the damage caused by such incidents.

Such attacks, whether successful or unsuccessful, or other compromises with respect to our information security and the measures we implement to prevent, detect and respond to them, could result in our incurring significant costs related to, for example, rebuilding internal systems, defending against litigation, responding to regulatory inquiries or actions, paying damages or fines, or taking other remedial steps with respect to third parties, inadvertent diversion of cash, divert the attention of our management and key information technology resources, disrupt key business operations, harm our reputation and deter business partners from working with us. A compromise with respect to our information security could lead to public exposure of personal information of our clinical trial subjects, Auryxia patients and others, and negative publicity. Publicity about vulnerabilities and attempted or successful incursions could damage the integrity of our studies or delay their completion. If a compromise to our information security were to occur and cause interruptions in our operations, it could result in a disruption of our development programs and our business operations, whether due to a loss of our trade secrets or other proprietary information or other similar disruptions. For example, any loss of clinical trial data could result in delays in our regulatory approval efforts for our product candidates and significantly increase our costs to recover or reproduce the data. In addition, such attacks could compromise our ability to protect our trade secrets and proprietary information from unauthorized access or misappropriation and a loss of, or damage to, our data or marketing applications. Inappropriate public disclosure of confidential or proprietary information could subject us to liability and cause delays in our product research, development and commercialization efforts. We currently do not maintain cybersecurity insurance to protect against losses due to security breaches.

Any failure to maintain proper functionality and security of our internal computer and information systems could result in a loss of, or damage to, our data or marketing applications or inappropriate disclosure of confidential or proprietary information, interrupt our operations, damage our reputation, subject us to liability claims or regulatory penalties, under a variety of federal, state or other applicable privacy laws, such as HIPAA, the GDPR, or state data protection laws including the CCPA, harm our competitive position and delay the further development and commercialization of our products and product candidates, or impact our relationships with Auryxia patients.

Our employees, independent contractors, principal investigators, CROs, CMOs, consultants and vendors may engage in misconduct or other improper activities, including non-compliance with regulatory standards and requirements and insider trading.

We are exposed to the risk that our employees, independent contractors, principal investigators, CROs, CMOs, consultants and vendors may engage in fraudulent conduct or other illegal activity. Misconduct by these parties could include intentional, reckless and/or negligent conduct or unauthorized activities that violate applicable laws, including the following:

•the FDA and other healthcare authorities’ regulations, including those laws that require the reporting of true, complete and accurate information to regulatory authorities, and those prohibiting the promotion of unapproved drugs or approved drugs for an unapproved use;

•quality standards, including GXP;

•federal and state healthcare fraud and abuse laws and regulations and their non-U.S. equivalents;

•anti-bribery and anti-corruption laws, such as the FCPA and the UK Bribery Act or country-specific anti-bribery or anti-corruption laws, as well as various import and export laws and regulations;

•laws that require the reporting of true and accurate financial information and data; and

•U.S. securities laws and regulations and their non-U.S. equivalents.

We are conducting global clinical trials in countries where corruption is prevalent, and violations of any of these laws by our personnel or by any of our vendors or agents, such as our CROs or CMOs, could have a material adverse impact on our clinical trials and our business and could result in criminal or civil fines and sanctions. We are subject to complex laws that govern our

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international business practices. These laws include the FCPA, which prohibits U.S. companies and their intermediaries, such as CROs or CMOs, from making improper payments to foreign government officials for the purposes of obtaining or keeping business or to obtain any kind of advantage for the company. The FCPA also requires companies to keep accurate books and records and maintain adequate accounting controls. A number of past and recent FCPA investigations by the Department of Justice and the U.S. Securities and Exchange Commission have focused on the life sciences sector.

Compliance with the FCPA is expensive and difficult, particularly in countries in which corruption is a recognized problem. Some of the countries in which we are conducting clinical trials have a history of corruption, which increases our risks of FCPA violations. In addition, the FCPA presents unique challenges in the pharmaceutical industry because in many countries’ hospitals are operated by the government, and doctors and other hospital employees are considered foreign government officials. Certain payments made by pharmaceutical companies, or on their behalf by CROs, to hospitals in connection with clinical trials and other work have been deemed to be improper payments to government officials and have led to FCPA enforcement actions.

Additionally, the UK Bribery Act applies to our global activities and prohibits bribery of private individuals as well as public officials. The UK Bribery Act prohibits both the offering and accepting a bribe and imposes strict liability on companies for failing to prevent bribery, unless the company can show that it had “adequate procedures” in place to prevent bribery. There are also local anti-bribery and anti-corruption laws in countries where we are conducting clinical trials, and many of these also carry the risk of significant financial or criminal penalties.

We are also subject to trade control regulations and trade sanctions laws that restrict the movement of certain goods, currency, products, materials, services and technology to, and certain operations in, various countries or with certain persons. Our ability to transfer people and products among certain countries is subject to maintaining required licenses and complying with these laws and regulations.

The internal controls, policies and procedures, and training and compliance programs we have implemented to deter prohibited practices may not be effective in preventing our employees, contractors, consultants, agents or other representatives from violating or circumventing such internal policies or violating applicable laws and regulations. The failure to comply with laws governing international business practices may impact our clinical trials, result in substantial civil or criminal penalties for us and any such individuals, including imprisonment, suspension or debarment from government contracting, withdrawal of our products, if approved, from the market, or being delisted from The Nasdaq Global Market. In addition, we may incur significant costs in implementing sufficient systems, controls and processes to ensure compliance with the aforementioned laws.

The laws and regulations referenced above may restrict or prohibit a wide range of pricing, discounting, marketing and promotion, sales commission, customer incentive programs and other business arrangements. It is not always possible to identify and deter misconduct by employees and third parties, and the precautions we take to detect and prevent this activity may not be effective in controlling unknown or unmanaged risks or losses or in protecting us from governmental investigations or other actions or lawsuits stemming from a failure to be in compliance with such laws or regulations. If any such actions are instituted against us, and we are not successful in defending ourselves or asserting our rights, or if any such action is instituted against our employees, consultants, vendors or principal investigators, those actions could have a significant impact on our business, including the imposition of civil, criminal and administrative penalties, damages, monetary fines, possible exclusion from participation in Medicare, Medicaid and other federal healthcare programs, contractual damages, reputational harm, diminished profits and future earnings, curtailment of our operations, disclosure of our confidential information and imprisonment, any of which could adversely affect our ability to operate our business and our results of operations.

We may encounter difficulties in managing our growth and expanding our operations successfully.

As we commercialize Auryxia and advance our product candidates through development and commercialization, we have expanded and may need to further expand our clinical, medical, regulatory, manufacturing, marketing and sales capabilities or contract with third parties to provide these capabilities for us. In addition, we may encounter difficulties in managing the expanded operations of a larger and more complex company following the Merger as well as challenges associated with managing an increasingly diversified business.  

We have strategic collaborations for the commercialization of Riona and the development and commercialization of vadadustat. As our operations expand, we expect that we will need to manage additional relationships with various strategic collaborators, consultants, vendors, suppliers and other third parties. Future growth will impose significant added responsibilities on members of management.

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In addition, in connection with the Merger, we have experienced and may to continue to experience significant growth in our employee base for sales, marketing, operational, managerial, financial, human resources, compliance, drug development, quality, regulatory and medical affairs and other areas. This growth has imposed and will continue to impose significant added responsibilities on members of management, including the need to recruit, hire, retain, motivate and integrate additional employees, including employees who joined us in connection with the Merger. Also, our management may have to divert a disproportionate amount of its attention away from our day-to-day activities and devote a substantial amount of time to managing these growth activities, including the integration of Keryx’s business with our business.

Our future financial performance and our ability to commercialize Auryxia and vadadustat or any other product candidate, if approved, and to compete effectively will depend, in part, on our ability to manage any future growth effectively. To manage our recent and anticipated future growth, we must continue to implement and improve our managerial, operational and financial systems, procedures and processes, expand our facilities and continue to recruit, train, and retain additional qualified personnel. We may not be able to implement these improvements in an efficient or timely manner and may discover deficiencies in existing systems, procedures and processes. Moreover, the systems, procedures and processes currently in place or to be implemented may not be adequate for such growth. Due to our limited financial resources and the limited experience of our management team in managing a company with such growth, we may not be able to effectively manage the expansion of our operations or recruit, train, and retain additional qualified personnel. In addition, we may need to adjust the size of our workforce as a result of changes to our expectations for our business, which can result in diversion of management attention, disruptions to our business, and related expenses. The physical expansion of our operations may lead to significant costs and may divert our management and business development resources. Any inability to manage growth could delay the execution of our business plans or disrupt our operations. We may not be able to accomplish these tasks, and our failure to accomplish any of them could prevent us from successfully growing our company or realizing the anticipated benefits of the Merger.

If product liability lawsuits are brought against us, we may incur substantial liabilities and may be required to limit commercialization of our product and product candidates.

We face an inherent risk of product liability as a result of the use of our product commercially, and clinical testing of our product candidates, and we will face an even greater risk if we commercialize any additional products in the future. For example, we may be sued if our product or any of our product candidates allegedly causes injury or is found to be otherwise unsuitable during product testing, manufacturing, marketing or sale. Any such product liability claims may include allegations of defects in manufacturing, defects in design, a failure to warn of dangers inherent in the product or product candidate, negligence, strict liability and breach of warranties. Claims could also be asserted under state consumer protection acts. If we cannot successfully defend ourselves against product liability claims, we may incur substantial liabilities or be required to limit commercialization of our products and product candidates. Even a successful defense would require significant financial and management resources. Regardless of the merits or eventual outcome, product liability claims may result in:

•decreased demand for any product or product candidates;

•injury to our reputation and significant negative media attention;

•withdrawal of clinical trial participants;

•delay or termination of clinical trials;

•our inability to continue to develop a product candidate;

•significant costs to defend the related litigation;

•a diversion of management’s time and our resources;

•substantial monetary awards to study subjects or patients;

•product recalls or withdrawals, or labeling, marketing or promotional restrictions;

•decreased demand for a product or product candidate;

•loss of revenue;

•the inability to commercialize any product or product candidates; and

•a decline in our stock price.

Failure to obtain and retain sufficient product liability insurance at an acceptable cost to protect against potential product liability claims could prevent or inhibit the commercialization of products we develop. We currently carry product liability insurance that we believe is appropriate for our company. Although we maintain product liability insurance, any claim that may be brought against us could result in a court judgment or settlement in an amount that is not covered, in whole or in part, by our

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insurance or that is in excess of the limits of our insurance coverage. Our insurance policies also have various exclusions, and we may be subject to a product liability claim for which we have insufficient or no coverage. If we have to pay any amounts awarded by a court or negotiated in a settlement that exceed our coverage limitations or that are not covered by our insurance, we may not have, or be able to obtain, sufficient capital to pay such amounts. In addition, insurance coverage is becoming increasingly expensive, and we may not be able to maintain insurance coverage at a reasonable cost. We also may not be able to obtain additional insurance coverage that will be adequate to cover product liability risks that may arise. Consequently, a product liability claim may result in losses that could be material to our business.

Risks Related to our Common Stock

Our stock price has been and may continue to be volatile, which could result in substantial losses for purchasers of our common stock and lawsuits against us and our officers and directors.

Our stock price has been and will likely continue to be volatile. The stock market in general and the market for similarly situated pharmaceutical and biotechnology companies have experienced extreme volatility that has often been unrelated to the operating performance of particular companies. Since our initial public offering in March 2014, the price of our common stock as reported on The Nasdaq Global Market has ranged from a low of $2.99 on November 13, 2019 to a high of $31.00 on June 20, 2014. The market price of shares of our common stock could be subject to wide fluctuations in response to many risk factors listed in this section, developments related to and results of our clinical studies, developments related to our regulatory submissions, developments related to our ability to commercialize Auryxia and any other approved product candidates, announcements by us or our competitors of significant mergers, acquisitions, licenses, strategic collaborations, joint ventures, collaborations or capital commitments, negative publicity around Auryxia, vadadustat or any other product or product candidate, the results of competitive clinical trials, products or technologies, regulatory or legal developments in the United States and other countries, developments or disputes concerning patent applications, issued patents or other proprietary rights, the recruitment or departure of key personnel, the level of expenses related to Auryxia, vadadustat or any other product or product candidate or clinical development programs, actual or anticipated changes in estimates as to financial results, development timelines or recommendations by securities analysts, variations in our financial results or those of companies that are perceived to be similar to us, changes in the structure of healthcare payment systems, market conditions in the pharmaceutical and biotechnology sectors, general economic, industry and market conditions and others beyond our control. As a result of this volatility, our shareholders may not be able to sell their common stock at or above the price at which they purchased it.  

In addition, companies that have experienced volatility in the market price of their stock have frequently been the subject of securities class action and shareholder derivative litigation. See Part II, Item 1. Legal Proceedings for information concerning securities class action and shareholder derivative lawsuits initiated against Keryx and certain current and former directors and officers of ours and Keryx’s. In addition, we could be the target of other such litigation in the future. Class action and shareholder derivative lawsuits, whether successful or not, could result in substantial costs, damage or settlement awards and a diversion of our management’s resources and attention from running our business, which could materially harm our reputation, financial condition and results of operations.

The issuance of additional shares of our common stock or the sale of shares of our common stock by any of our directors, officers or significant shareholders will dilute our shareholders’ ownership interest in Akebia and may cause the market price of our common stock to decline.

Most of our outstanding common stock can be traded without restriction at any time. As such, sales of a substantial number of shares of our common stock in the public market could occur at any time. These sales, or the perception in the market that the holders of a large number of shares intend to sell such shares, could reduce the market price of our common stock.

According to the most recent filings made under Section 13(d) and 13(g) of the Securities Exchange Act of 1934, as amended, or the Exchange Act, Baupost Group Securities, L.L.C., or Baupost, beneficially owned approximately 12% of our outstanding common stock, and our former director Muneer Satter, beneficially owned approximately 2% of our outstanding common stock. Subject to certain restrictions, Baupost and Mr. Satter are able to sell their shares of common stock in the public market from time to time without registering them, subject to certain limitations on the timing, amount and method of those sales imposed by Rule 144 under the Securities Act of 1933, as amended. In addition, pursuant to our registration rights agreement with Baupost and our Fourth Amended and Restated Investors’ Rights Agreement, as amended, with Mr. Satter, Baupost and Mr. Satter have the right, subject to certain conditions and with certain exceptions, to require us to file registration statements covering the shares common stock they own or to include their shares in registration statements that we may file or in public offerings of our shares of common stock. Following their registration and sale under the applicable registration statement, those shares would become freely tradable. By exercising their registration rights and selling a large number of shares of common stock, Baupost and Mr. Satter could cause the price of our common stock to decline.

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We have a significant number of shares that are subject to outstanding options, restricted stock units and a warrant, and in the future we may issue additional options, restricted stock units, warrants or other derivative securities convertible into our common stock. The exercise or vesting of any such options, restricted stock units, warrants or other derivative securities, and the subsequent sale of the underlying common stock, could cause a further decline in our stock price. These sales also might make it difficult for us to sell equity securities in the future at a time and at a price that we deem appropriate. Also, the Merger was financed by the issuance of shares of our common stock to shareholders of Keryx, comprising approximately 50.6% of our issued and outstanding shares of common stock, calculated based on our fully diluted market capitalization as of the date of signing the Agreement and Plan of Merger relating to the Merger. Keryx shareholders may decide not to hold the shares of our common stock they received in the Merger. Other Keryx shareholders, such as funds with limitations on the amount of stock they are permitted to hold in individual issuers, may be required to sell the shares of our common stock they received in the Merger.  Such sales of our common stock could result in higher than average trading volume and may cause the market price for our common stock to decline.

In addition, we currently have on file with the SEC a universal shelf registration statement, which allows us to offer and sell certain registered securities, such as common stock, preferred stock, warrants and units, from time to time pursuant to one or more offerings at prices and terms to be determined at the time of sale.

Sales of substantial amounts of shares of our common stock or other securities by our employees or our other shareholders or by us under our universal shelf registration statement, pursuant to at-the-market offerings or otherwise, could dilute our stockholders, lower the market price of our common stock and impair our ability to raise capital through the sale of equity securities.

Insiders and significant stockholders could cause us to take actions that may not be, or refrain from taking actions that may be, in our best interest or in the best interest of all of our stockholders.

As of June 30, 2020, we believe that our directors and executive officers, together with their affiliates, beneficially owned, in the aggregate, approximately 2% of our outstanding common stock. In addition, we have certain significant stockholders, including Baupost, which beneficially owned approximately 12% of our outstanding common stock according to the most recent filings made under Section 13(d) and 13(g) of the Exchange Act. As a result, if certain significant stockholders were to choose to act together, they would be able to control all matters submitted to our stockholders for approval, as well as our management and affairs, such as:

•the composition of our Board of Directors;

•the adoption of amendments to our Ninth Amended and Restated Certificate of Incorporation, or Charter, and Amended and Restated By-Laws;

•the approval of mergers or sales of substantially all of our assets;

•our capital structure and financing; and

•the approval of contracts between us and these shareholders or their affiliates, which could involve conflicts of interest.

This concentration of ownership could harm the market price of our common stock by:

•delaying, deferring or preventing a change in control of our company and making some transactions more difficult or impossible without the support of these stockholders, even if such transactions are beneficial to other stockholders;

•impeding a merger, consolidation, takeover or other business combination involving our company; or

•entrenching our management or our Board of Directors.  

Moreover, the interests of these stockholders may conflict with the interests of other stockholders, and we may be required to engage in transactions that may not be agreeable to or in the best interest of us or other stockholders.

We will continue to incur increased costs as a result of operating as a public company, and our management will be required to devote substantial time to compliance initiatives and corporate governance practices.

As a public company, and particularly on and after December 31, 2019 when we ceased to be an “emerging growth company”, we will continue to incur significant legal, accounting and other expenses. The Sarbanes-Oxley Act of 2002, or the SOX Act, the Dodd-Frank Wall Street Reform and Consumer Protection Act, the listing requirements of The Nasdaq Global Market and

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other applicable securities rules and regulations impose various requirements on public companies, including establishment and maintenance of effective disclosure and financial controls and corporate governance practices. Our management and other personnel will need to continue to devote a substantial amount of time to these compliance initiatives. Moreover, these rules and regulations have and will continue to increase our legal and financial compliance costs and make some activities more time-consuming and costly, especially since, as of December 31, 2019, we are no longer an “emerging growth company” and we therefore may no longer take advantage of certain exemptions from various reporting requirements that are applicable to public companies that are “emerging growth companies”.

We cannot predict or estimate the amount of additional costs we may incur to continue to operate as a public company, nor can we predict the timing of such costs. These rules and regulations are often subject to varying interpretations, in many cases due to their lack of specificity and, as a result, their application in practice may evolve over time as new guidance is provided by regulatory and governing bodies, which could result in continuing uncertainty regarding compliance matters and higher costs necessitated by ongoing revisions to disclosure and governance practices.

If we are unable to satisfy the requirements of Section 404 of the Sarbanes-Oxley Act or fail to maintain an effective system of internal control over financial reporting, we may not be able to accurately report our financial results or prevent fraud. As a result, stockholders could lose confidence in our financial and other public reporting which would harm our business and the trading price of our common stock.

Effective internal control over financial reporting is necessary for us to provide reliable financial reports and, together with adequate disclosure controls and procedures, is designed to prevent fraud. Any failure to implement required new or improved controls, or difficulties encountered in their implementation could cause us to fail to meet our reporting obligations. In addition, any testing by us, as and when required, conducted in connection with Section 404 of the SOX Act, or Section 404, or any testing by our independent registered public accounting firm, which became required as of December 31, 2019, may reveal deficiencies in our internal control over financial reporting that are deemed to be material weaknesses or that may require prospective or retroactive changes to our financial statements or identify other areas for further attention or improvement. As a larger company following the Merger, implementing and maintaining effective controls may require more resources, and we may encounter internal control integration difficulties. For example, as of December 31, 2019, management and our independent registered public accounting firm concluded that our disclosure controls and procedures were not effective because of a material weakness in our internal control over financial reporting relating to our inventory process. During fiscal 2020, we are enhancing our system of internal controls over financial reporting to remediate this material weakness. As the revised and enhanced controls need to be in operation for a sufficient period of time and be tested to ensure that the controls are operating as designed, management has concluded that the material weakness cannot be considered remediated as of June 30, 2020. Even if this material weakness is remediated, our internal control over financial reporting could in the future have material weaknesses, deficiencies or conditions that could require correction or remediation. Inferior internal controls could also cause investors to lose confidence in our reported financial information, which could have a negative effect on the trading price of our common stock.

We will need to continue to dedicate internal resources, potentially engage outside consultants and maintain a detailed work plan to assess and document the adequacy of internal control over financial reporting, continue steps to remediate control deficiencies and improve control processes as appropriate, validate through testing that controls are functioning as documented and implement a continuous reporting and improvement process for internal control over financial reporting. Despite our efforts, there is a risk that we will not be able to conclude within the prescribed timeframe that our internal control over financial reporting is effective as required by Section 404. If we are not able to comply with the requirements of Section 404 in a timely manner each year, we could be subject to sanctions or investigations by the Securities and Exchange Commission, the Nasdaq Stock Market or other regulatory authorities which would require additional financial and management resources and could adversely affect the market price of our common stock. Furthermore, if we cannot provide reliable financial reports or prevent fraud, our business and results of operations could be harmed and investors could lose confidence in our reported financial information.

Provisions in our organizational documents and Delaware law may have anti-takeover effects that could discourage an acquisition of us by others, even if an acquisition would be beneficial to our stockholders, and may prevent attempts by our stockholders to replace or remove our current management.

Provisions in our Charter and our Amended and Restated By-Laws may have the effect of discouraging, delaying or preventing a change in control of us or changes in our management. These provisions could also limit the price that investors might be willing to pay in the future for shares of our common stock, thereby depressing the market price of our common stock. In addition, because our Board of Directors is responsible for appointing certain members of our management team, these provisions may frustrate or prevent any attempts by our stockholders to replace or remove our current management by making it more difficult for stockholders to replace members of our Board of Directors. Among other things, these provisions:

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•authorize “blank check” preferred stock, which could be issued by our Board of Directors without stockholder approval and may contain voting, liquidation, dividend and other rights superior to our common stock;

•create a classified Board of Directors whose members serve staggered three-year terms;

•specify that special meetings of our stockholders can be called only by our Board of Directors pursuant to a resolution adopted by a majority of the total number of directors;

•prohibit stockholder action by written consent;

•establish an advance notice procedure for stockholder approvals to be brought before an annual meeting of our stockholders, including proposed nominations of persons for election to our Board of Directors;

•provide that our directors may be removed only for cause;

•provide that vacancies on our Board of Directors may be filled only by a majority of directors then in office, even though less than a quorum;

•require a supermajority vote of 75% of the holders of our capital stock entitled to vote or the majority vote of our Board of Directors to amend our Amended and Restated By-Laws; and

•require a supermajority vote of 85% of the holders of our capital stock entitled to vote to amend the classification of our Board of Directors and to amend certain other provisions of our Charter.

These provisions, alone or together, could delay or prevent hostile takeovers, changes in control or changes in our management.

In addition, Section 203 of the Delaware General Corporation Law prohibits a publicly-held Delaware corporation from engaging in a business combination with an interested stockholder, generally a person which together with its affiliates owns, or within the last three years has owned, 15% of our voting stock, for a period of three years after the date of the transaction in which the person became an interested stockholder, unless the business combination is approved in a prescribed manner.

Any provision of our Charter, our Amended and Restated By-Laws or Delaware law that has the effect of delaying or deterring a change in control could limit the opportunity for our stockholders to receive a premium for their shares of our common stock, and could also affect the price that some investors are willing to pay for our common stock.

Our ability to use net operating losses to offset future taxable income may be subject to certain limitations.

Under Section 382 of the Internal Revenue Code, or Section 382, a corporation that undergoes an “ownership change” is subject to limitations on its ability to utilize its pre-change net operating losses, or NOLs, to offset future taxable income. On December 12, 2018, we completed the Merger, which we believe has resulted in an ownership change under Section 382. In addition, the Tax Cuts and Jobs Act, including amendments made by the Coronavirus Aid, Relief, and Economic Security Act which was enacted on March 27, 2020, includes changes to U.S. federal tax rates and the rules governing net operating loss carryforwards that may significantly impact our ability to utilize our net operating losses to fully offset taxable income in the future. Future changes in our stock ownership, many of which are outside of our control, could result in an additional ownership change under Section 382. As a result, if we generate taxable income, our ability to use our pre-change NOL carryforwards to offset federal taxable income may be subject to limitations, which could potentially result in increased future tax liability to us. At the state level, state net operating losses generated in one state cannot be used to offset income generated in another state and there may be periods during which the use of NOL carryforwards is suspended or otherwise limited, which could accelerate or permanently increase state taxes owed.

Furthermore, our ability to utilize our NOLs is conditioned upon our attaining profitability and generating U.S. taxable income. As described above under “—Risks Related to our Financial Position and Need for Additional Capital,” we have incurred significant net losses since our inception and anticipate that we will continue to incur significant losses for the foreseeable future; thus, we do not know whether or when we will generate the U.S. taxable income necessary to utilize our NOLs. A valuation allowance has been provided for the entire amount of our NOLs.

Our Charter designates the state or federal courts located in the State of Delaware as the sole and exclusive forum for certain types of actions and proceedings that may be initiated by our stockholders, which could limit our stockholders’ ability to obtain a favorable judicial forum for disputes with us or our directors, officers or employees.

Our Charter provides that, subject to limited exceptions, the state and federal courts located in the State of Delaware will be the sole and exclusive forum for (1) any derivative action or proceeding brought on our behalf, (2) any action asserting a claim of breach of a fiduciary duty owed by any of our directors, officers or other employees to us or our stockholders, (3) any action asserting a claim against us arising pursuant to any provision of the Delaware General Corporation Law, our Charter or our Amended and Restated By-Laws, or (4) any other action asserting a claim against us that is governed by the internal affairs doctrine. Under our Charter, this exclusive forum provision will not apply to claims that are vested in the exclusive jurisdiction

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of a court or forum other than the Court of Chancery of the State of Delaware, or for which the Court of Chancery of the State of Delaware does not have subject matter jurisdiction. For instance, the provision would not apply to actions arising under federal securities laws, including suits brought to enforce any liability or duty created by the Securities Exchange Act of 1934, as amended, or the rules and regulations thereunder. Any person or entity purchasing or otherwise acquiring any interest in shares of our capital stock shall be deemed to have notice of and to have consented to the provisions of our Charter described above. This choice of forum provision may limit a stockholder’s ability to bring a claim in a judicial forum that it finds favorable for disputes with us or our directors, officers or other employees, which may discourage such lawsuits against us and our directors, officers and employees. Alternatively, if a court were to find these provisions of our Charter inapplicable to, or unenforceable with respect to, one or more of the specified types of actions or proceedings, we may incur additional costs associated with resolving such matters in other jurisdictions, which could adversely affect our business and financial condition.

We are currently subject to legal proceedings that could result in substantial costs and divert management's attention, and we could be subject to additional legal proceedings.

We are currently subject to legal proceedings as described in Part II, Item 1. Legal Proceedings. In addition, securities class action and derivative lawsuits and other legal proceedings are often brought against companies for any of the risks described in this Quarterly Report on Form 10-Q following a decline in the market price of their securities. In connection with any litigation or other legal proceedings, we could incur substantial costs, and such costs and any related settlements or judgments may not be covered by insurance. We could also suffer an adverse impact on our reputation and a diversion of management’s attention and resources, which could have a material adverse effect on our business.

Because we do not anticipate paying any cash dividends on our capital in the foreseeable future, capital appreciation, if any, will be our stockholders’ sole source of gain.

We have never declared or paid cash dividends on our capital stock. We currently intend to retain all of our future earnings, if any, to finance the development and growth of our business. In addition, the terms of our current or future debt agreements may preclude us from paying dividends. As a result, capital appreciation, if any, of our common stock will be our stockholders’ sole source of gain for the foreseeable future.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.

Sales of Unregistered Securities

During the quarter ended June 30, 2020, we did not have any sales of unregistered securities.

Item 3. Defaults Upon Senior Securities.

Not applicable.

Item 4. Mine Safety Disclosures.

Not applicable.

Item 5. Other Information.

As previously disclosed, Jason A. Amello stepped down as the Senior Vice President, Chief Financial Officer, Treasurer, principal financial officer and principal accounting officer of the Company, effective June 29, 2020. Mr. Amello has since remained an employee of the Company to support the Company and his successor during a transitional period.

On August 7, 2020, the Company entered into a consulting agreement, or the Consulting Agreement, with Mr. Amello pursuant to which he will continue to advise the Company as a consultant in exchange for (i) the continued vesting of his outstanding options to purchase shares of the Company’s common stock, time-based restricted stock unit awards and performance restricted stock unit awards through the term of the Consulting Agreement and (ii) the continued exercisability of such option awards until, in the case of option awards under the Company’s 2014 Incentive Plan, as amended, three months, and in the case of the Company’s Amended and Restated 2008 Equity Incentive Plan, one month, following expiration or termination of the Consulting Agreement, in each case pursuant and subject to the terms of the such equity plans and the applicable equity award agreements.

The Consulting Agreement term will commence upon termination of Mr. Amello’s employment with the Company, effective as of August 7, 2020 and will expire on April 1, 2022, unless extended or earlier terminated pursuant to the terms of the Consulting Agreement.

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The foregoing information is included for the purpose of providing the disclosures required under “Item 5.02 – Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers” of Form 8-K.

The foregoing description of the Consulting Agreement does not purport to be complete and is qualified in its entirety by reference to such agreement, a copy of which we expect to file as an exhibit to our Quarterly Report on Form 10-Q for the quarter ending September 30, 2020.

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Item 6. Exhibits.

Exhibits
3.1	Ninth Amended and Restated Certificate of Incorporation (incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K, filed on March 28, 2014).
3.2	Amended and Restated Bylaws (incorporated by reference to Exhibit 3.2 to the Company’s Current Report on Form 8-K, filed on March 28, 2014).
3.3	Certificate of Amendment of Ninth Amended and Restated Certificate of Incorporation of Akebia Therapeutics, Inc. (incorporated by reference to Exhibit 3.1 to the Company's Current Report on Form 8-K, filed on June 9, 2020).
10.1*†	Offer Letter to David Spellman, dated as of June 13, 2020.
10.2*#	Supply Agreement, dated as of April 2, 2020, by and between Akebia Therapeutics, Inc. and STA Pharmaceutical Hong Kong Limited.
31.1*	Certification of Principal Executive Officer Required Under Rule 13a-14(a) of the Securities Exchange Act of 1934, as amended.
31.2*	Certification of Principal Financial Officer Required Under Rule 13a-14(a) of the Securities Exchange Act of 1934, as amended.
32.1*	Certification of Principal Executive Officer and Principal Financial Officer Required Under Rule 13a-14(b) of the Securities Exchange Act of 1934, as amended, and 18 U.S.C. 1350.
101.INS*	Inline XBRL Instance Document (the instance document does not appear in the Interactive Data File because XBRL tags are embedded within the Inline XBRL document)
101.SCH*	Inline XBRL Taxonomy Extension Schema Document
101.CAL*	Inline XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF*	Inline XBRL Taxonomy Extension Definition Linkbase Document
101.LAB*	Inline XBRL Taxonomy Extension Labels Linkbase Document
101.PRE*	Inline XBRL Taxonomy Extension Presentation Linkbase Document
104*	Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)

* Filed, or submitted electronically, herewith

† Indicates management contract or compensatory plan

# Indicates portions of the exhibit (indicated by asterisks) have been omitted pursuant to Item 601(b)(10)(iv) of Regulation S-K

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	AKEBIA THERAPEUTICS, INC.
Date:  August 10, 2020	By:	/s/ John P. Butler
		John P. Butler
		President and Chief Executive Officer
Date: August 10, 2020	By:	/s/ David A. Spellman
		David A. Spellman
		Senior Vice President, Chief Financial Officer and Treasurer

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EX-10.1

Exhibit 10.1

Akebia Therapeutics, Inc. 245 First Street Cambridge, MA 02142 T: +1 617.871.2098 F: +1 617.871.2099 www.akebia.com

June 11, 2020

Dear David:

It is my pleasure to extend the following offer of employment to you on behalf of Akebia Therapeutics, Inc. (“Akebia” or the “Company”). Akebia is proud of its achievements to date and we are looking to individuals such as you to play a supporting role in advancing our exciting product candidates.

This offer letter (the “Offer Letter”) confirms to you Akebia’s offer of employment, the terms of which are as follows:

1. Position. You will be employed in the full-time, salaried exempt position of Sr. Vice President, Chief Financial Officer and Treasurer reporting to John Butler, based in our Cambridge, Massachusetts office. We expect that you will perform any and all duties and responsibilities typically associated with your position, and any other duties assigned to you, in a satisfactory manner and to the best of your abilities at all times. As you progress with the Company, your position, location, reporting structure and assignments are, of course, subject to change.

2. Start Date/Relocation. Your employment will begin on June 29, 2020 (“Start Date”).

3. Compensation.

        Your initial compensation will include the following:

(i)  You will be paid a base salary of $460,000 per year, paid bi-weekly;

(ii)  You will be considered annually for a performance-based, cash bonus of up to 40% of your base salary; and

(iii)  Subject to approval by the Company’s Compensation Committee, you will be granted a non-statutory option (the “Option”) to purchase 280,000 shares of common stock of the Company (the “Common Stock”) on the last trading day of the calendar month in which your Start Date occurs (the “Grant Date”), with an exercise price equal to the closing price of the Common Stock on The NASDAQ Global Market on the Grant Date, subject to the terms of a stock option agreement between you and the Company. Subject to approval by the Company’s Compensation Committee, the Option, unless earlier terminated or forfeited, will vest as follows: 25% of the shares will vest and become exercisable on the first anniversary of the Grant Date; thereafter, the remaining 75% of the shares will vest and become exercisable ratably on the first day of each calendar quarter between the one-year anniversary of the Grant Date and the fourth anniversary of the Grant Date. Vesting will be contingent on your continuous employment with the Company.

4. Benefits. As a full-time employee, during your employment with the Company you will be entitled to participate in all applicable benefit programs currently offered by Akebia and for which you are eligible. The Company is committed to providing competitive benefits to its employees. The Company currently offers health care and dental insurance to full-time

Akebia Therapeutics, Inc. 245 First Street Cambridge, MA 02142 T: +1 617.871.2098 F: +1 617.871.2099 www.akebia.com

employees (and their spouses and dependents) and a 401(k) savings plan, which allows employees to contribute a portion of their pre-tax wages to a retirement account, up to the maximum permitted by law. The Company will also provide you with paid time off (PTO) in accordance with its policies, plus those holidays observed by the Company. Your eligibility to participate in and receive any particular benefit is subject to, and governed solely by, the applicable plan document. We will provide separately more detailed information regarding the current terms and conditions of our benefit plans, and information regarding any future additions or modifications to our benefit plans will be provided when available. The Company reserves the right to modify, change or terminate its benefits and benefit plans from time to time in its sole discretion.

5. Taxes.All forms of compensation referred to in this Offer Letter are subject to reduction to reflect applicable taxes and other withholdings and deductions. You hereby acknowledge that the Company does not have a duty to design its compensation policies in a manner that minimizes your tax liabilities, and you will not make any claim against the Company or its Board of Directors (or any of its or their respective agents, delegates and representatives) related to tax liabilities arising from your compensation.

6. Contingencies. Pursuant to the Immigration and Reform Control Act of 1986, and within three days after your Start Date, you must provide sufficient documentation of your ability to work legally in the U.S. This employment offer is also contingent upon the results of any reference and background checks.

7. Employment at Will. This offer of employment is not intended to create a contract of employment. Your employment will be at-will and both you and Akebia will have the right to terminate the employment relationship at any time, with or without reason or notice.

8. Covenants. This offer of employment is contingent upon your execution of an Employee Agreement (Confidentiality, Non-Solicitation, Non-Competition and Developments Agreement), a copy of which will be provided to you and which you must sign and return prior to your Start Date.

9.Entire Agreement, Amendments. This Offer Letter constitutes the complete agreement between you and the Company, contains all of the terms of your employment with the Company and supersedes any prior agreements, representations or understandings (whether written, oral or implied) between you and the Company. No variations, modifications or amendments to this Offer Letter shall be deemed valid unless reduced to writing and signed by the Company and you, provided that your employment will remain at-will unless otherwise set forth in a writing signed by the Company’s Chief Executive Officer.  

To indicate acceptance of these terms, please sign and return a copy of this letter (via fax, pdf or regular mail).

David, we look forward to you joining Akebia. Teamwork, quality people and a business focus are all critical to Akebia's success. We are confident that you will play an important role in the future of our Company.

Akebia Therapeutics, Inc. 245 First Street Cambridge, MA 02142 T: +1 617.871.2098 F: +1 617.871.2099 www.akebia.com

  Very truly yours,

             /s/ Tamara Dillon

Tamara Dillon

              SVP, Chief People Officer

Response requested by Monday, June 15, 2020:

I accept the above employment offer and agree to its terms and conditions. By accepting this offer of employment, I acknowledge that no prior employment obligations or other contractual restrictions exist which preclude my employment with Akebia Therapeutics, Inc. I represent that I am not relying on any representations made to me by anyone other than as set forth above.

Accepted:

_/s/ David Spellman_________________________________  Date:  6/13/2020   

David Spellman 

EX-10.2

Exhibit 10.2

Certain identified information has been excluded from the exhibit because it is both (i) not material and

  (ii) would likely cause competitive harm to the Company, if publicly disclosed. Double asterisks denote omissions.

SUPPLY AGREEMENT

This Supply Agreement (“Agreement”) is dated 02-Apr-2020 (the “Effective Date”) and is between Akebia Therapeutics, Inc., a United States corporation located at 245 First Street, Cambridge, MA 02143, United States of America (“Akebia”) and STA Pharmaceutical Hong Kong Limited, a Hong Kong corporation located at [**] (“STA”) (each, individually, a “Party,” and collectively, the “Parties”).

WHEREAS, pursuant to this Agreement, and subject to the terms and conditions and for the consideration described herein, STA shall manufacture and supply vadadustat drug substance (or “Product,” as defined below) for Akebia’s commercial purposes, and Akebia shall pay STA for such Product as described herein;

NOW THEREFORE, the Parties therefore agree as follows:

1.DEFINITIONS

1.1“Affiliate” means, with respect to either Akebia or STA, any corporation, company, partnership, joint venture and/or firm which controls, is controlled by or is under common control with Akebia or STA, as applicable. As used in this definition, “control” means (i) in the case of corporate entities, direct or indirect ownership of more than fifty percent (50%) of the stock or shares having the right to vote for the election of directors (or such lesser percentage that is the maximum allowed to be owned by a foreign corporation in a particular jurisdiction); and (ii) in the case of non-corporate entities, the direct or indirect power to manage, direct or cause the direction of the management and policies of the non-corporate entity or the power to elect more than fifty percent (50%) of the members of the governing body of such non-corporate entity.

1.2“Akebia Equipment” means any equipment that, to the extent agreed by the Parties, is provided by Akebia or on behalf of Akebia to STA for the purposes of the Manufacture of Product.

1.3“Akebia Improvements” means any Intellectual Property and discoveries, inventions, developments, modifications, innovations, updates, enhancements, improvements, writings or rights (whether or not protectable under patent, trademark, copyright or similar laws) that are conceived, discovered, invented, developed, created, made or reduced to practice during the provision of the Services by Akebia, STA, or both Parties jointly, but solely to the extent specific to any Akebia Materials, the Intermediate Compounds, the Manufacturing Process, or the Product.

1.4“Akebia IP” means Intellectual Property owned or controlled by Akebia or its Affiliates, including Akebia Improvements; provided, however, that Akebia IP does not include any STA Confidential Information, STA IP, STA Improvements, whether disclosed or developed under this Agreement, or disclosed or developed under any prior agreement between the Parties or their Affiliates, including the MSA.

1.5“Akebia Materials” means any materials provided by Akebia, or on behalf of Akebia, to STA for the purpose of providing the Services.

1.6“Akebia Release” means the completion of the Manufacturing Process performed by STA in accordance with GMP, the Quality Agreement, this Agreement, and STA’s standard operating procedures by which Akebia determines that, based upon review of the Batch Records provided by STA, a Batch of Product complies with the Warranty in Section 7.1.

1.7“Applicable Law” means all applicable laws, regulations, cGMP, securities rules and regulations, and other official guidelines and directives relevant to the Parties, the Services, and the supply, use, marketing or sale of the Product.

1.8“Batch” means a specific quantity of the Product produced during one cycle of Manufacture and intended to be of uniform character and quality as defined by and memorialized in the Batch Records.

1.9“Batch Documentation” means, for each Batch, the Certificate of Compliance and the Certificate of Analysis.

1.10“Batch Records” means the set of detailed processing instructions which STA follows or has followed to Manufacture each Batch of Product, including analytical data, equipment maintenance and deviation documentation prepared in accordance with 21 CFR 211.188.

1.11“Business Records” means all records, including reports, accounts, notes and data, of all information relating to the Services that are specific and unique to the Product, would not exist but for the Services provided under this Agreement, and are necessary for Akebia’s diligent monitoring and inspection efforts solely for compliance and regulatory requirements.

1.12“Certificate of Analysis” means a document signed by an authorized representative of STA, describing testing methods applied to the Product and the results of the testing.

1.13“Certificate of Compliance” means a document signed by an authorized representative of STA, certifying that a particular Batch was Manufactured in accordance with cGMP, Applicable Laws and the Specifications.

1.14“cGMP” means current good manufacturing practices and regulations applicable to the Manufacture of Product that are promulgated by any regulatory authority and which may be in effect from time to time and applicable to the Services.

1.15“Confidential Information” of a Party (the “Disclosing Party”) means any and all non-public scientific, technical, financial or business information, or data or trade secrets in whatever form (written, oral or visual) that is furnished or otherwise made known directly or indirectly by one Party (the “Discloser”) to the other (the “Recipient”) pursuant to the terms of this Agreement or otherwise in connection with this Agreement, whether marked confidential or reasonably believed to be confidential. The Confidential Information of both Parties includes the any pricing information, information on forecasting volume or commitment relevant to this Agreement, as well as the nature of any dispute and the outcome of any proceedings arising out of or in connection with this Agreement, to the extent allowed by Applicable Law.

1.16“Force Majeure” means an event caused by facts or circumstances [**], such as strikes, riots, disease or medical epidemics or outbreaks, wars, acts of terrorism, fire, natural disasters, or other acts of God.

1.17[**].

1.18“Intellectual Property” means trademarks, trade names, service marks, domain names, copyrights and copyright applications, registrations, schematics, industrial models, inventions (whether patentable or unpatentable), know-how, methods, techniques, data, documentation, regulatory submissions, specifications, trade secrets, computer software programs, patents and patent applications, and other intangible proprietary information.

1.19“Intermediate Compounds” means [**], intermediates which are used in the Manufacturing Process of the Product.

1.20“Latent Defect” means defects that are not readily discoverable by Akebia based on Akebia’s quality control measures as described in the Quality Agreement.

1.21“Manufacture”, “Manufacturing” and “Manufactured” means the activities performed under this Agreement that relate to the production of the Product, including purchasing Raw Materials, subcontracting or performing services, manufacturing, processing, formulating, quality control testing, quality assurance, cleaning, maintenance, storage and other Facility-related activities, labeling, packaging, handling and shipping.

1.22“Manufacturing Process” means the processes used in the Manufacture of the Product, including the use of the Raw Materials and the Intermediate Compounds to create the Product.

1.23“Minimum Order Quantity” means the minimum amount of Product that Akebia may include in any Purchase Order provided under this Agreement. For purposes of this Agreement, the Minimum Order Quantity is listed in Exhibit A.

1.24“MSA” means the Master Services Agreement entered into by the Parties [**] and, any of the Statements of Work thereunder.

1.25“Nonconforming” and “Nonconformity,” means that a Batch of Product does not comply with the Warranty in Section 7.1.

1.26“Person or Entity” means any individual, sole proprietorship, partnership, limited partnership, limited liability partnership, corporation, limited liability company, business trust, joint stock company, trust, unincorporated association, joint venture or other similar entity or organization.

1.27“Product” means the active pharmaceutical ingredient known as vadadustat.

1.28“Product Price” means the price at which Akebia will purchase the Product from STA, as described in Exhibit A.

1.29“Purchase Order” means a binding purchase order for the volume of Product requested for an upcoming period of time, issued in Akebia’s standard format.

1.30“Purchase Order Lead Time” means the required time between the date that a Purchase Order is provided by Akebia to STA, and the first delivery date for Product in such Purchase Order. For purposes of this Agreement, the Purchase Order Lead Time is listed in Exhibit A.

1.31“Raw Materials” means the chemical entities required to synthesize the Intermediate Compounds and produce the Product through performance of the Manufacturing Process [**].

1.32“Related Persons or Related Entities” means, as to a Party, its Affiliates and subcontractors, and its and its Affiliates’ and Subcontractors’ directors, officers, consultants, advisors, employees, contractors and agents.

1.33“Reprocess” and “Reprocessing” means introducing Product back into the Manufacturing Process in order to correct a Nonconformity. Reprocessing under this Agreement can only take place at Akebia’s option and direction, and only if such Reprocessing has been approved by the applicable regulatory authority governing such Product’s Manufacture.

1.34“Services” means Manufacturing and all other activities to be performed by STA under this Agreement.

1.35“Shortfall” means [**] in a Purchase Order.

1.36“Specifications” means the specifications of the Product and Raw Materials, along with the set of analytical test methods and acceptance criteria applicable thereto, as set forth in the Quality Agreement, as such Specifications may be amended in accordance with this Agreement and the change control procedures in the Quality Agreement.

1.37“STA Disposition” means the action by which STA Personnel, having the necessary qualifications, experience and authority to (i) oversee quality assurance of the Manufacture, and (ii) review and determine the suitability of individual Batches for Release under Applicable Law, have (a) conducted analyses of a Batch of Product using the analytical methods agreed to in the Quality Agreement, (b) executed the Certificate of Analysis applicable to the Product and such other Batch documentation that may be requested by Akebia, and (c) completed any other certifications or documents and other activities that may be required to release the Product under Applicable Law, the Quality Agreement, and cGMP, and otherwise complies with the Warranty.

1.38“STA Improvements” means any Intellectual Property and discoveries, inventions, developments, modifications, innovations, updates, enhancements, improvements, writings or rights (whether or not protectable under patent, trademark, copyright or similar laws) that are conceived, discovered, invented, developed, created, made or reduced to practice by or on behalf of STA in connection with the performance of Services under this Agreement, that have general applications, but are not related to the Product nor derived from Akebia Confidential information, and are otherwise distinct from Akebia Materials, the Intermediate Compounds, the Manufacturing Process, Akebia IP and Akebia Improvements.

1.39“STA IP” means Intellectual Property owned or controlled by STA or its Affiliates, including STA Improvements; provided, however, that STA IP does not include any Akebia Confidential Information, Akebia Improvements or Akebia IP, whether disclosed or developed under this Agreement or disclosed or developed under any prior agreement between the Parties or their Affiliates, including the MSA.

1.40“STA Personnel” means [**]. The involvement of Affiliates of STA in providing the Services shall [**]. Before providing Services, all STA Personnel must be subject to binding commitments with STA under which they have confidentiality and Intellectual Property assignment obligations with regard to Akebia’s Confidential Information (as defined below) that are consistent with the terms of this Agreement.

1.41“Term” means the term of this Agreement, which commences on the Effective Date.

1.42“Third Party” means any Person other than Akebia, STA or their respective Affiliates.

2.SERVICES

2.1General. STA will [**] perform the Services and deliver Product as directed by Purchase Orders issued by Akebia and accepted by STA, in accordance with the terms and conditions of this Agreement and exercising [**].

STA will perform all Services at its facilities, providing all staff necessary to perform the Services in accordance with the terms of this Agreement, and shall hold as appropriate at the facilities all equipment and other items used in the Services. STA will not [**].

2.2Inspections. To the extent permitted by Applicable Law,STA will permit Akebia to [**] by any regulatory authority (if and to the extent it specifically relates to any Product). STA will give as much advance notice as reasonably practicable to Akebia of any such visit or inspection. Unless prohibited by Applicable Law, STA will [**]. STA will [**] with any regulatory authority relating to the Services.

2.1Affiliates. STA [**] STA.

3.PLANNING AND FORECASTS

3.1Forecasts. Beginning [**] after the first full calendar quarter after the Effective Date, and no more than [**] after each calendar quarter during the Term of this Agreement, Akebia shall provide to STA a [**] month [**] written estimate (the “Rolling Forecast”) of the quantities of the Product Akebia expects to order from STA. Akebia shall update the Rolling Forecast on a quarterly basis.

3.2Throughout the Term, in accordance with the Minimum Order Quantity and Purchase Order Lead Time, Akebia shall submit to STA a Purchase Order to facilitate payment to STA which shall be consistent with the Rolling Forecast. Upon provision of a Purchase Order by Akebia to STA, STA shall provide acceptance of such Purchase Order within [**] upon receipt of the same. Failure by STA to provide notice of any acceptance or rejection of any such Purchase Order will be considered acceptance of the Purchase Order. STA agrees that it shall not unreasonably fail to accept any Purchase Order provided by Akebia. Should Akebia issue a Purchase Order [**]. If there is a contradiction between a provision of this Agreement and a Purchase Order, then the provision in this Agreement will take precedence.

3.3Events of a regulatory nature that prevent Akebia from launching or marketing any product containing the Product in a market (e.g. delay in or withdrawal of market approvals from regulatory agencies, etc.) which then prevents or delays Akebia from purchasing an amount of Product corresponding to an accepted Purchase Order, shall [**] the Parties.

4.PRICE AND PAYMENT

4.1Product Price. The Product Price, Purchase Order Lead Time, and Minimum Order Quantity under this Agreement are detailed in Exhibit A.

4.2Expenses. Akebia shall reimburse STA for [**], or otherwise described in this Agreement, including Sections 8.1, 8.3, 10.1(b), 12.3, 15 and Exhibit A.

4.3Invoices and Payment. Unless the applicable Purchase Order provides otherwise:

(a)STA shall invoice Akebia for each delivery of Product upon Akebia Release of such Product. The invoice shall be sent to:

[**]

(b)Akebia shall pay each invoice in full within [**] of receipt, unless a dispute arises related to such an invoice’s accuracy, or the Parties otherwise agree in writing to change the amount invoiced. To the extent that Akebia is required to withhold any taxes from such payment, Akebia shall notify STA promptly before such withholding takes place. Payment must be made without deduction of any nature, unless otherwise agreed by the Parties in writing, or unless Akebia reasonably disputes the accuracy of an invoice in accordance with Section 4.3(b) below. The amount payable is exclusive of, and Akebia shall pay, any applicable taxes (other than taxes on STA’s income) and other reasonable fees of any nature properly imposed by or under the authority of any applicable government authority. Payment will be in USD by wire transfer (unless another method is agreed by the Parties) to:

Name	[**]
Address	[**]
Account	[**]
Currency	[**]
Bank	[**]
SWIFT	[**]
Bank Address	[**]

(c)In the instance where the accuracy of an invoice is reasonably disputed by Akebia, the Parties shall work together in good faith to resolve the dispute; provided, however, that Akebia shall pay any undisputed portion of such invoice, if applicable, in accordance with Section 4.3 (b). If such a dispute is not resolved within [**], the Parties shall follow the provisions set forth in Section 16.7, hereof.

4.4Late Payments. In the event that Akebia (a) fails to make payment of an undisputed invoice received from STA in the timeframe described in Section 4.3(b) above, and (b) such invoice, or portion of such invoice, is not in dispute as described in Section 4.3(c) above, (a “Late Payment”), interest of [**] will be accrued [**] of the overdue payment as of the date of the Late Payment. If the Late Payment is not rectified within [**], then [**].

4.5Percent [**] Minimum Purchase. During the Term of this Agreement, Akebia shall, upon regulatory approval to market a drug product containing the Product [**] and each year while this Agreement is in effect, unless otherwise agreed by the Parties, order from STA not less than [**] of its [**] for the Product. Any such percent [**] shall only consist of [**], a product containing the Product by the appropriate regulatory entities.

Beginning the calendar year following [**], Akebia shall provide to STA a summary of its [**] for the Product (“[**] Data”). [**] Data shall be based on Akebia and its’ Affiliates’ [**]. Akebia shall provide [**] Data to STA no later than [**].

5.MANUFACTURING COMPLIANCE

5.1Specifications and Manufacturing Process. STA shall Manufacture each Product in accordance with the Specifications. Akebia may modify the Specifications and Manufacturing Process; provided, however, that [**]. In such event, [**].

5.2Licenses and Permits. STA shall ensure that all relevant governmental licenses and permits relating to Manufacturing are obtained and maintained.

5.3Quality Agreement. This Agreement may incorporate the quality assurance requirements of a quality agreement executed separately between the Parties (the “Quality Agreement”). If there is a contradiction between a requirement of the Quality Agreement and a provision of this Agreement or a Purchase Order with respect to GMP quality-related issues, then the requirement of the Quality Agreement will take precedence; otherwise this Agreement shall govern.

5.4Regulatory Assistance. STA shall, upon Akebia’s request, provide Akebia with all supporting data and information relating to Manufacturing that is reasonably necessary for obtaining and maintaining regulatory approvals relating to the Product. Prior to providing any such data and information, [**].

5.5On-Site Monitoring. Representatives of Akebia may, upon [**], visit the manufacturing facility where the Services are performed (the “Facility”) and consult during such visits with appropriate STA Personnel in order to monitor the Services (a “Monitoring Visit”). STA will allow Akebia employees

to observe the Manufacturing of the Product by STA at the Facility, and review Batch Records pertaining to Services and inspect the Facilities used by STA to render Services.

(a)Routine Monitoring Visits. [**], or as required by regulatory authorities, a Monitoring Visit shall not take place more than [**].

(b)[**] Audits. Notwithstanding the foregoing, Akebia shall also have the right to conduct (or to cause STA to allow Akebia’s Affiliates or Akebia’s licensees or sublicensees to conduct) audits [**] (a “[**] Audit”). During a [**] Audit, STA will allow Akebia employees to observe the Manufacturing of the Product by STA at the Facility, review Batch Records and Business Records pertaining to Services, and to inspect the Facilities used by STA to render Services. Akebia shall notify STA in writing in advance of any [**] Audit, and thereafter, the Parties shall mutually agree on the timing of the [**] Audit, [**].

(c)Access. The Akebia representatives will be bound by rules applicable to the Facility and may, at the reasonable discretion of STA, be given limited access to only certain areas within the Facility that are related to the Services provided under this Agreement [**].

5.6Safety. Akebia shall provide such information as may be required by STA or Applicable Law concerning the stability, storage and safety requirements of the Product and any isolated or potentially isolated Intermediate Compounds or Raw Materials. This information includes an MSDS and any other information known to Akebia relating to hazards associated with these compounds or the wastes generated during their preparation.

5.7Safety Stock. STA shall store [**] an extra amount of Product, located at STA’s Facility, as a measure to ensure delivery of ordered Product (hereinafter, “Safety Stock”). All Safety Stock shall be packaged and stored in accordance with the instructions of Akebia. Upon its Manufacture, the Product being retained for Safety Stock will [**] Product in accordance with a Purchase Order.

Safety Stock shall be maintained by STA in quantities equal to, at any given time, [**] of the amounts forecasted for the following [**], but in any event no less than [**], until [**]. Prior to [**]. Upon expiration or termination of the Agreement, and contingent upon [**] held by STA.

6.QUALITY RELEASE AND DELIVERY

6.1STA Disposition. Product may not be delivered to Akebia until STA Disposition occurs. STA shall provide Akebia supporting Batch Documentation as it is completed throughout a Manufacturing campaign. Upon Akebia’s request, STA will also deliver to Akebia all raw data and other Batch Records in the possession or under the control of STA relating to the Manufacture of each Batch of Product.

6.2Akebia Quality Release. No delivery of Product by STA will occur without prior Akebia Release. Akebia’s certificate of lot disposition must be received by STA prior to delivery of Product. For such purpose, Akebia’s quality department will review the documentation provided by STA for any Batch of Product and will provide STA with the certificate of lot disposition or, otherwise, with its justified objections to issuing the certificate of lot disposition in accordance with the Quality Agreement.

6.3Sample Retention. STA will retain samples of Product Manufactured under this Agreement for such period and in such quantities as may be required by cGMP or any Applicable Law.

6.4Storage. Prior to delivery, all Product at the Facility will be stored in a clean, secured, segregated area. Except for Safety Stock, for any Product that has been stored for more than [**] after Akebia Release STA will charge Akebia storage fees at a [**] unless different rates are otherwise agreed by the Parties.

6.5Delivery Parameters. STA shall deliver the Product on the date agreed by the Parties in the corresponding Purchase Order in accordance with the Purchase Order Lead Time. If, [**], a delivery of Product is subject to a Shortfall, the Parties will discuss appropriate steps to alleviate such a Shortfall. In such cases, STA shall [**] make up the Shortfall within a timeframe agreed by the Parties. If the Parties fail to agree on such a [**] timeline, or if STA fails, or is unable to provide Product to make up such a Shortfall within the agreed timeframe , Akebia shall have the option, [**], to [**]. If Akebia elects to [**]. Shortfalls affecting, as applicable, more than [**] in a [**] period may be considered [**]; provided, however, that such Shortfall are solely due to the acts or omissions of STA.

7.WARRANTY; NON-CONFORMING PRODUCT

7.1Warranty. STA warrants to Akebia that each unit of Product supplied under this Agreement will have been Manufactured in accordance with the highest industry standards and will comply with this Agreement, the relevant Purchase Order, the Specifications, the Quality Agreement, and Applicable Law (the “Warranty”).

7.2Product Nonconformance. Any claim of Akebia or its designees concerning Nonconforming Product shall be communicated by Akebia to STA in writing as soon as possible but, no later than:

(a) [**]

(b) [**]

Any such Nonconformity claim will need to be accompanied by a sample of the Product analyzed by Akebia, and with all relevant documentation regarding such analysis, including but not limited to the Certificate of Analysis and a report indicating the methods used by Akebia. For clarification, after the end of the above-mentioned period to claim a Nonconformity of Products, Akebia and its designees shall not be entitled to claim that the Products delivered by STA were Nonconforming Products. Also, Akebia and its designees shall not be entitled to claim that the Products delivered by STA were Nonconforming Products if Akebia, or as appropriate, its designees, fail to perform the tests, analysis, inspections and/or reviews of the Product appropriately and in a timely manner, and/or complete its related documentation required under Applicable Laws, the Quality Agreement, and/or cGMP.

Notwithstanding the foregoing, nothing in this Section 7.2 shall relieve STA of responsibility in the case of a Latent Defect in delivered Product caused by STA’s acts or omissions during the Manufacture of such Product, unless such Latent Defect is detected by Akebia and Akebia fails to communicate it to STA within [**] after [**].

7.3Reimbursement and Refund. If, according to the terms of this Agreement and the Quality Agreement, any delivery of Product does not conform to the Warranty, then, without prejudice to any other rights which Akebia may have under this Agreement, STA shall [**].

In the event that Manufactured Product, after having been investigated using the methods detailed herein, fails to comply with the Warranty in more than [**] of Batches Manufactured in [**], Akebia’s obligations under Section 4.5 to purchase [**] of its [**] from STA shall be reduced to [**] and Akebia shall be entitled to take the necessary steps to secure its supply chain of Product as a result.

7.4Quality Disputes. If the Parties are unable to agree as to whether a Product conforms to the Warranty, [**]. The [**]. The cost of inspections and testing by the laboratory will be [**].

8.SOURCING OF RAW MATERIALS

8.1Materials. [**]. If a Raw Material is not commercially available, then Akebia may elect to [**]. Should the Parties agree to exercise the options detailed in either 8.1(a) or 8.1(b), the Product Price as detailed in Exhibit A shall be updated, upon written agreement by the Parties.

8.2[**]. If the Parties elect to exercise the option detailed in Section 8.1(a) above, [**] in a timely manner, and provide such information as may be required [**] or Applicable Law concerning the stability, storage and safety requirements. This information includes an MSDS and any other information known [**] relating to hazards associated with the [**]. STA shall ensure that the [**] will be [**] Akebia.

8.3Unused [**] and other Raw Materials. STA shall, at Akebia’s option [**], return, destroy (or otherwise dispose of) unused [**] promptly after the earlier of (a) completion of the Services for which the [**] were provided, or (b) receipt of written instructions from Akebia pertaining to their disposition. STA may dispose of other unused Raw Materials at its sole discretion.

9.RECORDS

9.1Batch Records Retention. STA shall retain all Batch Records related to the Manufacture of the Product, reasonably protected from fire, theft and destruction for [**] after Manufacture, or longer as required by Applicable Law or as otherwise necessary for regulatory or insurance purposes (the “Retention Period”). STA shall provide reasonable access to or copies of any Batch Records upon request of Akebia or as required in connection with any [**] Audits. Upon expiration of the Retention Period, the Batch Records will, at Akebia’s option, be promptly destroyed or delivered to Akebia [**]. Notwithstanding the foregoing, a copy of the Batch Records may be retained by STA as required by Applicable Law or as otherwise necessary for regulatory or insurance purposes.

9.2Business Records Retention. STA will maintain all Business Records in a secure area reasonably protected from fire, theft and destruction. Business Records will be retained by STA for at least [**] after the termination or expiration of this Agreement, or longer as required by Applicable Law. STA will, [**], allow Akebia or its designee to access (at reasonable and agreed upon times, or by sending copies to Akebia either physically or electronically, as agreed between the Parties and no more than once every calendar year) any Business Records solely for the purposes of conducting the necessary Monitoring Visits, [**] Audits, or any other business, quality or compliance inspections required of Akebia under Applicable Law, cGMP, and as reasonably requested. Review of Business Records by Akebia shall be conducted in confidential conditions and Akebia shall treat Business Records as Confidential Information as defined under this Agreement.

10.INTELLECTUAL PROPERTY

10.1Ownership

(a)Except as otherwise provided in this Agreement, STA has no rights in any Akebia IP and Akebia has no rights in STA IP.

(b)STA shall ensure that all STA Personnel vests in STA any and all rights that such person might otherwise have in any Intellectual Property created or developed in connection with the provision of the Services. Any such Intellectual Property shall be considered Akebia Improvements, as the case may be, and STA hereby assigns and shall assign all right, title and interest in such Intellectual Property to Akebia. Akebia shall, [**], have sole control of filing and prosecuting applications for, and maintenance and enforcement of, patents for Akebia Improvements. STA shall use [**] to assist Akebia to obtain, maintain and enforce any such patents. Akebia shall promptly notify STA of any

patents granted for Akebia Improvements. STA is responsible for all payments to be made to STA Personnel in accordance with Applicable Law requiring remuneration for inventions.

(c)Notwithstanding the foregoing, STA Improvements are not Akebia Improvements or Akebia IP, and shall be and remain STA IP.

10.2Licenses

(a)Akebia hereby grants, and shall ensure that each applicable Affiliate will promptly grant, to STA and its Affiliates the limited right to use Akebia IP solely for the purpose of providing the Services hereunder.

(b)STA hereby grants, and shall ensure that each applicable Affiliate will promptly grant, a fully paid-up, non-exclusive, royalty-free, worldwide, irrevocable, perpetual, transferable, and sublicensable license to Akebia and its Affiliates to use STA IP necessary for the commercialization and sale of any product containing the Product.

10.3Exclusivity and Patent Challenges

(a)The Parties acknowledge that Akebia or its Affiliates shall supply secret and substantial know-how to STA for the purposes of this Agreement. In order to protect that know-how and without prejudice to STA's obligations under this Agreement during the Term, and for so long as Akebia owns or controls the Akebia IP in and to vadadustat or the Intermediate Compounds, [**].

(b)Neither STA nor any of its Affiliates shall assist any Third Party in performing any of the actions described in 10.3(a) above [**]. STA further agrees that [**], neither STA nor any of its Affiliates shall:

(i)[**]

(ii)[**]

11.REPRESENTATIONS AND WARRANTIES

11.1Proper Authority. Each Party represents and warrants that (a) it validly exists under the laws of the jurisdiction in which it was organized, (b) it has the full power, right and authority to execute and deliver this Agreement and to perform its obligations under this Agreement, (c) this Agreement constitutes a legal, valid and binding agreement enforceable against it, and (d) its performance under this Agreement will not conflict with any obligations it may have to any other person.

11.2Infringement. Each Party represents and warrants that, to the best of its knowledge, the Services will not infringe the Intellectual Property rights of any Third Party.

11.3Debarment. STA represents and warrants that neither it nor any STA Personnel have been debarred, or, to the best of its knowledge, are under consideration for debarment by the United States Food and Drug Administration from working in or providing services to any pharmaceutical or biotechnology company pursuant to the Generic Drug Enforcement Act of 1992 or any other governmental authority pursuant to analogous laws.

11.4Compliance with Law. Each Party represents and warrants that (a) neither it nor any of its Affiliates violated any Applicable Law in connection with actions leading up to entry into this Agreement, and (b) it shall, and shall ensure that each applicable Affiliate shall, comply with all Applicable Law in connection with performance of this Agreement. Each Party shall immediately notify the other Party

upon becoming aware of a breach of this Section 11.4. Material breach of this Section 11.4 with respect to the U.S. Foreign Corrupt Practices Act or any other anti-bribery law will be deemed an incurable material breach of this Agreement.

12.INDEMNIFICATION; LIMITATIONS ON LIABILITY; INSURANCE

12.1Third Party Claims. Each Party shall defend, indemnify and hold the other Party and its Related Persons harmless from and against any and all liabilities and damages (including reasonable attorneys’ fees) (“Losses”) resulting from any Third Party claims, demands, suits or proceedings (“Claims”) to the extent arising out of or relating to (a) in the case that STA is the indemnifying Party, its performance of the Services, (b) in the case that Akebia is the indemnifying Party, its use of the Product, Akebia IP or other deliverables of the Services, (c) a [**] of this Agreement by the indemnifying Party, (d) a [**] of Applicable Law by the indemnifying Party or any of its Related Persons, or (e) the [**] of the indemnifying Party or any of its Related Persons during the course of activities carried out in connection with this Agreement. The indemnification obligations set forth in this Section 12.1 do not apply to the extent that the Loss arises in whole or in part from the [**] of, or [**] of this Agreement by, the indemnified Party or any of its Related Persons.

12.2Intellectual Property Claims. Akebia shall defend, indemnify and hold STA and its Related Persons harmless from and against Losses resulting from Claims arising out of any infringement of any Third Party’s Intellectual Property rights with respect to Akebia’s use of (a) the Product, (b) Akebia Materials, (c) Akebia IP or (d) the Manufacturing Process, except for those Claims that are solely based on STA IP with respect to the Manufacturing of the Product. STA shall defend, indemnify and hold Akebia and its Related Persons harmless from and against Losses resulting from Claims arising out of or related to infringement of any Third Party’s Intellectual Property rights in connection with the Services and that are solely based on STA IP with respect to the Manufacturing of the Product.

12.3Defense. Each Party shall notify the other Party promptly upon learning of a Claim that is subject to indemnification pursuant to Section 12.1 or 12.2. The indemnifying Party may control, [**] the defense of the Claim in good faith [**]. The indemnified Party shall [**] to cooperate in the defense and [**]. No compromise or settlement of any Claim may be made by the indemnifying Party without the indemnified Party’s written consent.

12.4Limitations on Liability

(a)EXCEPT FOR LOSSES ARISING FROM A [**] OF ITS CONFIDENTIALITY OBLIGATIONS AS DESCRIBED IN THIS AGREEMENT, [**] OF APPLICABLE LAW, OR FROM A PARTY’S [**], NEITHER PARTY WILL BE LIABLE TO THE OTHER PARTY FOR LOSSES THAT RESULT FROM ANY SPECIAL, CONSEQUENTIAL, OR INDIRECT DAMAGES SUFFERED BY THE OTHER PARTY UNDER THIS AGREEMENT.

(b)EXCEPT FOR LOSSES ARISING FROM A PARTY’S [**] OF ITS CONFIDENTIALITY OBLIGATIONS AS DESCRIBED IN THIS AGREEMENT, [**] OF APPLICABLE LAW, THEIR OBLIGATIONS OF INDEMNIFICATION [**], OR FROM A PARTY’S [**], THE PARTIES’ [**] LIABILITY TO EACH OTHER UNDER THIS AGREEMENT [**].

12.5Insurance. Each Party shall maintain insurance coverage with a financially sound and reputable insurer against loss from such risks and in such amounts as are standard for the industry, and sufficient to support its obligations under this Agreement. Each Party shall provide a copy of the applicable insurance policy if requested by the other Party.

13.CONFIDENTIALITY AND PUBLICITY

13.1Confidentiality. During the term of this Agreement and for a period of [**] thereafter (and in the case of trade secrets, [**], Recipient agrees to (a) hold in confidence all Discloser’s Confidential Information, and not disclose Discloser’s Confidential Information, except as expressly provided in Section 13.2 below, without the prior written consent of Discloser; (b) use Discloser’s Confidential Information solely to carry out Recipient’s rights or obligations under this Agreement; (c) treat Discloser’s Confidential Information with the same degree of care Recipient uses to protect Recipient’s own confidential information but in no event with less than a reasonable degree of care; and (d) reproduce Discloser’s Confidential Information solely to the extent necessary to carry out Recipient’s rights or obligations under this Agreement, with all such reproductions being considered Discloser’s Confidential Information.

13.2Permitted Disclosures.

(a)Recipient may provide Discloser’s Confidential Information solely to its employees or contractors (but if Recipient is STA, then solely to STA Personnel) on a need-to-know basis and solely as necessary to carry out Recipient’s rights or obligations under this Agreement; provided, that Recipient remains liable for the compliance of such employees or contractors (or if STA is Recipient, the compliance of such STA Personnel) with the terms of this Agreement.

(b)Either Party may disclose Confidential Information under this Agreement to any one or more Third Parties in connection with diligence activities conducted in anticipation of a possible sale, merger, reorganization, or financing of the Party or a business unit of the Party to which this Agreement relates, so long as such other Third Parties are bound by confidentiality obligations substantially similar to those set forth in this Agreement

(c)If Recipient is required by a governmental authority or by order of a court of competent jurisdiction to disclose any of Discloser’s Confidential Information, to the extent legally permissible, Recipient will give Discloser prompt written notice of such requirement or order and Recipient will take all reasonable and lawful actions to avoid or minimize the degree of such disclosure. Recipient will cooperate reasonably with Discloser in any efforts to seek a protective order.

13.3Return of Confidential Information. Upon termination of this Agreement, and if requested in writing by the Discloser within [**] thereafter, the Recipient shall cause all Confidential Information to be promptly destroyed or returned to the Discloser; provided, however, that (a) the Recipient may retain a single secure copy of any Confidential Information for legal archival purposes and (b) electronic back-up files that have been created by routine archiving and back-up procedures need not be deleted.

13.4Exceptions. Recipient’s obligations of non-disclosure and non-use under this Agreement will not apply to any portion of Discloser’s Confidential Information that Recipient can demonstrate, by competent proof:

(a)is generally known to the public at the time of disclosure or becomes generally known through no wrongful act on the part of Recipient;

(b)is in Recipient’s or its Affiliates’ possession at the time of disclosure other than as a result of Recipient's or a Third Party’s breach of any legal obligation;

(c)becomes known to Recipient or its Affiliates’ on a non-confidential basis through disclosure by sources other than Discloser having the legal right to disclose such Confidential Information; or

(d)is independently developed by Recipient or its Affiliates without reference to or reliance upon Discloser’s Confidential Information.

13.5Public Announcements. Neither Party shall issue any public announcement, press release, or other public disclosure of this Agreement, regarding this Agreement, or its subject matter, without the other Party’s prior written consent, except for any such disclosure that is, in the opinion of the discloser’s counsel, required by Applicable Law or the rules or common practices of a stock exchange on which the securities of the discloser are listed. Both Parties agree that each of them may disclose that Akebia has engaged STA as a manufacturer for the Product.

13.6Non-Disclosure Measures. STA and its Affiliates may have in the past provided, and may currently or in the future provide, services to other customers that are similar to the Services. STA is absolutely committed to protecting its customers’ Intellectual Property, and shall not use the Intellectual Property of a customer for the benefit of any person other than such customer.

13.7Publicity. Each Party shall not, and shall ensure that its Related Persons shall not, use the name, symbols or marks of the other Party or any of its Affiliates in any advertising or publicity material or make any form of representation or statement that would constitute an express or implied endorsement by the other Party or any of its Affiliates of any commercial product or service without the other Party’s or Affiliate’s prior written consent.

14.TERM AND TERMINATION

14.1Term. Subject to Section 14.2, the Term of this Agreement shall be four (4) calendar years. Notwithstanding any termination as described in Sections 14.2, 14.3, 14.4 or 14.5, it is the intent of the Parties that any renewal or extension of the Term will be agreed to in writing between the Parties, no later than eighteen (18) calendar months prior to its expiration.

14.2Termination at Will. Akebia will have the right, in its sole discretion, to terminate this Agreement for any reason, upon one hundred and eighty (180) calendar days prior written notice to STA.

14.3Termination by Akebia for Cause. Akebia may terminate this Agreement or any Purchase Orders if STA fails to cure a material breach of this Agreement by STA within [**] after receiving written notice from Akebia of such breach. Further, Akebia may terminate this Agreement or any Purchase Orders with immediate effect at any time upon written notice to STA in the event of a material breach of this Agreement by STA which cannot be cured.

14.4Termination by STA for Cause. STA may terminate this Agreement or any Purchase Orders if Akebia fails to cure a material breach of this Agreement by Akebia within [**] after receiving written notice from STA of such breach. Further, STA may terminate this Agreement or any Purchase Orders with immediate effect, at any time upon written notice to Akebia in the event of a material breach of this Agreement by Akebia which cannot be cured.

14.5Termination due to Product Discontinuation. If Akebia finally and definitely ceases or decides not to pursue the regulatory approval of any product containing the Product in any market, Akebia shall be entitled to terminate this Agreement with immediate effect.

14.6Effect of Termination or Expiration. Upon termination or expiration of this Agreement, neither STA nor Akebia will have any further obligations under this Agreement, provided that such termination or expiration shall be without prejudice to any rights that have accrued to the benefit of a Party prior to such expiration or termination, and further provided that:

(a)Akebia will promptly pay to STA: (i) the Product Price of any existing inventories of Product held by STA that are subject to a Purchase Order in effect at the time of such expiration or termination; (ii) the Product Price of any Safety Stock of Product in STA’s possession at the time of such termination. Payment by Akebia under Sections 14.6(a)(i) and 14.6(a)(ii) shall be contingent upon Akebia Release of any such Product, which Akebia Release shall not be unreasonably withheld.

(b)Except in the event of termination of the Agreement by Akebia in accordance with Section 14.3. above, Akebia will promptly pay to STA (i) the cost of any [**], acting diligently in the ordinary course of business in order to perform the Services in accordance with an open Purchase Order provided by Akebia, and have not yet begun such Manufacture at the time of such expiration or termination, and (ii) any other non-cancellable obligations incurred in connection with the Services, to the extent that such obligations directly relate to an open Purchase Order provided by Akebia. At Akebia’s option, and with prior written notice to STA, STA will deliver or destroy all Product and Raw Materials as directed by Akebia. Delivery shall be [**], and destruction shall be at Akebia’s cost.

(c)each Recipient will promptly return to the Discloser or destroy all of Discloser’s Confidential Information (including all copies) provided to Recipient under this Agreement pursuant to Section 13.3.

14.7[**]. If this Agreement is terminated by STA pursuant to Section 14.4, then STA may charge Akebia for [**]. STA hereby agrees that [**].

15.SHIPPING

15.1All materials, as the case may be, to be provided by STA to Akebia will be delivered [**], including Product, returned Akebia Materials, Raw Materials, returned Batch Records and returned Confidential Information. For the avoidance of doubt, [**].

15.2All materials to be provided by Akebia to STA will be delivered [**], including Akebia Materials. For the avoidance of doubt, [**].

16.MISCELLANEOUS

16.1Force Majeure. Except as otherwise expressly set forth in this Agreement, neither Party will be deemed to have breached this Agreement for failure or delay in fulfilling or performing any obligation under this Agreement when such failure or delay is caused by or results from Force Majeure. The Party affected by any Force Majeure will promptly notify the other Party, explaining the nature, details and expected duration thereof. Such Party will also notify the other Party from time to time as to when the affected Party reasonably expects to resume performance in whole or in part of its obligations under this Agreement, and notify the other Party of the cessation of any such event. A Party affected by Force Majeure will [**] remedy, remove or mitigate such event and the effects thereof with all reasonable dispatch. Upon termination of the Force Majeure, the performance of any suspended obligation or duty will promptly recommence. In the event that the affected Party's failure or delay remains uncured for a period of [**], the other Party may thereafter terminate this Agreement immediately upon written notice.

16.2Assignment. This Agreement may not be assigned by a Party without the prior written consent of the other Party. Any purported assignment in violation of this Section 16.2 is void.

[**]

16.3Notices. All notices, requests, demands and other communications required under this Agreement must be in writing and will be deemed to have been given or made and sufficient in all respects when delivered by reputable international courier to the following addresses:

To Akebia:  AKEBIA THERAPEUTICS, INC. 245 First Street  Cambridge, MA 02142 Attention: [**] cc: [**] email: [**]
To STA:  STA Pharmaceutical Hong Kong Limited [**]	With a copy to: [**]

16.4Independent Contractor. The Parties are independent contractors, and nothing contained in this Agreement may be deemed or construed to create a partnership, joint venture, employment, franchise, agency, fiduciary or other relationship between the Parties.

16.5Non-Solicitation. During the Term of this Agreement [**], neither Party shall solicit (or authorize or assist in the taking of any such actions by any Third Party) any employee of the other, or any of its Affiliates, who is involved in the performance of this Agreement to leave his or her employment with the other Party.

16.6Governing Law. The laws of the [**], without giving effect to principles of conflict of laws, govern all matters relating to this agreement.

16.7Disputes. The Parties shall engage in good faith consultation to resolve any dispute arising out of or in connection with this Agreement. Such consultation will begin immediately after one Party has delivered to the other Party a request for consultation. If the dispute cannot be resolved within [**] following the date on which the request for consultation is delivered, then the Parties [**].

16.8Entire Agreement; Non-Reliance. This Agreement contains the entire agreement between the Parties with respect to the subject matter of this Agreement, and constitutes the entire agreement between the Parties with respect to the specific subject matter of this Agreement and all prior agreements, oral or written, with respect to such subject matter are superseded, provided, however, that the provisions of such agreements intended to survive following expiration or termination shall survive in accordance with their terms. For the avoidance of doubt, prior confidentiality obligations are superseded to the extent that they cover Confidential Information. Each Party disclaims that it is relying on any representations or warranties other than those set forth or referenced in this Agreement. If there is any conflict, discrepancy or inconsistency between the terms of this Agreement and any Purchase Order, the terms of this Agreement will control.

16.9Amendment. No modification or waiver of any Term of this Agreement or any other form of amendment to this Agreement will be binding unless made expressly in writing and signed by both Parties.

16.10No Third Party Beneficiaries. The provisions of this Agreement are for the sole benefit of the Parties.

16.11Waiver. The waiver by either Party of any breach of any term of this Agreement will not constitute a waiver of any other breach of the same or any other term. Failure or delay on the part of either Party to

fully exercise any right under this Agreement will not constitute a waiver or otherwise affect in any way the same or any other right.

16.12Severability. If any provision in this Agreement is held to be invalid, illegal or unenforceable in any respect, then (a) the provision will be replaced by a valid and enforceable provision that achieves as far as possible the intention of the Parties and (b) all other provisions of this Agreement will remain in full force and effect as if the original Agreement had been executed without the invalidated, illegal or unenforceable provision.

16.13Counterparts. This Agreement may be executed in one or more counterparts, each of which will be deemed an original, but all of which together constitute one and the same instrument. Executed counterparts may be exchanged by facsimile or e-mail in PDF or similar electronic format, or electronic signature using recognized programs such as Adobe Sign or DocuSign.

[Signature page follows]

Thus, this Agreement was executed on the Effective Date.

STA PHARMACEUTICAL KONG KONG LIMITED	AKEBIA THERAPEUTICS, INC.
By: /s/ Xiaoyong Fu Name: Xiaoyong Fu Title: SVP, API Development & Commercialization	By: /s/ Jason Amello Name: Jason Amello Title: SVP, Chief Financial Officer
	AKEBIA THERAPEUTICS, INC. By: /s/ John Butler Name: John Butler Title: CEO

EX-31.1

Exhibit 31.1

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, John P. Butler, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Akebia Therapeutics, Inc.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the Audit Committee of the registrant’s Board of Directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: August 10, 2020	By:	/s/ John P. Butler
		John P. Butler
		President, Chief Executive Officer and Director
		(Principal Executive Officer)

EX-31.2

Exhibit 31.2

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, David A. Spellman, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Akebia Therapeutics, Inc.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the Audit Committee of the registrant’s Board of Directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: August 10, 2020	By:	/s/ David A. Spellman
		David A. Spellman
		Senior Vice President, Chief Financial Officer and Treasurer
		(Principal Financial Officer)

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 (18 U.S.C. Section 1350)

In connection with the accompanying Quarterly Report of Akebia Therapeutics, Inc. (the “Company”) on Form 10-Q for the fiscal quarter ended June 30, 2020 (the “Report”), I, John P. Butler, as Chief Executive Officer and President of the Company, and I, David A. Spellman, as Senior Vice President, Chief Financial Officer and Treasurer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

1.The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: August 10, 2020	By:	/s/ John P. Butler
		John P. Butler
		President, Chief Executive Officer and Director
		(Principal Executive Officer)
Date: August 10, 2020	By:	/s/ David A. Spellman
		David A. Spellman
		Senior Vice President, Chief Financial Officer and Treasurer
		(Principal Financial Officer)

XML

Cover Page - shares	6 Months Ended
	Jun. 30, 2020	Jul. 31, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2020
Document Transition Report	false
Entity File Number	001-36352
Entity Registrant Name	AKEBIA THERAPEUTICS, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	20-8756903
Entity Address, Address Line One	245 First Street
Entity Address, City or Town	Cambridge
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	02142
City Area Code	(617)
Local Phone Number	871-2098
Title of 12(b) Security	Common Stock, par value $0.00001 per share
Trading Symbol	AKBA
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		143,317,407
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Entity Central Index Key	0001517022
Current Fiscal Year End Date	--12-31

XML

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 245,406	$ 147,449
Available for sale securities	49,943	245
Inventory	104,603	116,349
Accounts receivable, net	39,115	38,864
Prepaid expenses and other current assets	10,035	6,626
Total current assets	449,102	309,533
Property and equipment, net	9,380	10,380
Operating lease assets	26,884	29,038
Goodwill	55,053	55,053
Other intangible assets, net	157,484	291,212
Other assets	47,271	75,985
Total assets	745,174	771,201
Current liabilities:
Accounts payable	29,413	39,217
Accrued expenses and other current liabilities	142,832	129,071
Short-term deferred revenue	23,529	39,830
Total current liabilities	195,774	208,118
Deferred revenue, net of current portion	34,542	33,120
Operating lease liabilities, net of current portion	24,862	27,528
Derivative liability	1,890	1,650
Long-term debt, net	76,338	75,805
Other non-current liabilities	41,508	30,223
Total liabilities	374,914	376,444
Commitments and contingencies (Note 14)
Stockholders' equity:
Preferred stock $0.00001 par value, 25,000,000 shares authorized; 0 shares issued and    outstanding at June 30, 2020 and December 31, 2019	0	0
Common stock $0.00001 par value; 350,000,000 and 175,000,000 shares authorized at June 30,    2020 and December 31, 2019, respectively; 143,129,409 and 121,674,568 shares issued and    outstanding at June 30, 2020 and December 31, 2019, respectively	1	1
Additional paid-in capital	1,400,820	1,188,810
Accumulated other comprehensive loss	(9)	0
Accumulated deficit	(1,030,552)	(794,054)
Total stockholders' equity	370,260	394,757
Total liabilities and stockholders' equity	$ 745,174	$ 771,201

XML

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2020	Jun. 04, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.00001		$ 0.00001
Preferred stock, shares authorized	25,000,000		25,000,000
Preferred stock, shares issued	0		0
Preferred stock, shares outstanding	0		0
Common stock, par value (in dollars per share)	$ 0.00001		$ 0.00001
Common stock, shares authorized	350,000,000	175,000,000	175,000,000
Common stock, shares issued	143,129,409		121,674,568
Common stock, shares outstanding	143,129,409		121,674,568

XML

Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenues:
Total revenues	$ 90,142	$ 100,803	$ 178,620	$ 173,469
Cost of goods sold:
Product	49,988	28,569	68,601	50,726
Amortization of intangibles	9,101	9,100	18,201	18,200
Impairment of intangible asset	115,527	0	115,527	0
Total cost of goods sold	174,616	37,669	202,329	68,926
Operating expenses:
Research and development	52,819	85,694	134,050	168,045
Selling, general and administrative	35,482	36,068	73,465	70,359
License expense	1,044	895	1,720	1,631
Total operating expenses	89,345	122,657	209,235	240,035
Operating loss	(173,819)	(59,523)	(232,944)	(135,492)
Other income (expense):
Interest income (expense)	(2,308)	485	(4,280)	1,354
Other income (expense)	376	23	726	(55)
Net loss before income taxes	(175,751)	(59,015)	(236,498)	(134,193)
Benefit from income taxes	0	(845)	0	(3,602)
Net loss	$ (175,751)	$ (58,170)	$ (236,498)	$ (130,591)
Net loss per share - basic and diluted (in dollars per share)	$ (1.28)	$ (0.49)	$ (1.78)	$ (1.11)
Weighted-average number of common shares - basic and diluted (in shares)	136,906,968	118,268,832	132,651,066	117,669,422
Comprehensive loss:
Net loss	$ (175,751)	$ (58,170)	$ (236,498)	$ (130,591)
Other comprehensive gain (loss) - unrealized gain (loss) on debt securities	(9)	59	(9)	284
Total comprehensive loss	(175,760)	(58,111)	(236,507)	(130,307)
Product revenue, net
Revenues:
Total revenues	30,696	29,089	59,905	52,200
License, collaboration and other revenue
Revenues:
Total revenues	$ 59,446	$ 71,714	$ 118,715	$ 121,269

XML

Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Unrealized Gain/(Loss)	Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2018		116,887,518
Beginning balance at Dec. 31, 2018	$ 635,928	$ 1	$ 1,150,583	$ (261)	$ (514,395)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Proceeds from sale of stock under employee stock purchase plan (in shares)		39,977
Proceeds from sale of stock under    employee stock purchase plan	188		188
Exercise of options (in shares)		62,204
Exercise of options	365		365
Share-based compensation expense	2,094		2,094
Restricted stock unit vesting (in shares)		132,563
Restricted stock unit vesting	0
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax	225			225
Net loss	(72,421)				(72,421)
Ending balance (in shares) at Mar. 31, 2019		117,122,262
Ending balance at Mar. 31, 2019	566,379	$ 1	1,153,230	(36)	(586,816)
Beginning balance (in shares) at Dec. 31, 2018		116,887,518
Beginning balance at Dec. 31, 2018	635,928	$ 1	1,150,583	(261)	(514,395)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax	284
Net loss	(130,591)
Ending balance (in shares) at Jun. 30, 2019		118,787,301
Ending balance at Jun. 30, 2019	519,356	$ 1	1,164,318	23	(644,986)
Beginning balance (in shares) at Dec. 31, 2018		116,887,518
Beginning balance at Dec. 31, 2018	$ 635,928	$ 1	1,150,583	(261)	(514,395)
Ending balance (in shares) at Dec. 31, 2019	121,674,568	121,674,568
Ending balance at Dec. 31, 2019	$ 394,757	$ 1	1,188,810	0	(794,054)
Beginning balance (in shares) at Mar. 31, 2019		117,122,262
Beginning balance at Mar. 31, 2019	566,379	$ 1	1,153,230	(36)	(586,816)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock, net of issuance costs (in shares)		1,384,520
Issuance of common stock, net of    issuance costs	9,035		9,035
Exercise of options (in shares)		300,592
Exercise of options	195		195
Retired shares (in shares)		(55,324)
Retired shares	(426)		(426)
Share-based compensation expense	2,284		2,284
Restricted stock unit vesting (in shares)		35,251
Restricted stock unit vesting	0
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax	59			59
Net loss	(58,170)				(58,170)
Ending balance (in shares) at Jun. 30, 2019		118,787,301
Ending balance at Jun. 30, 2019	$ 519,356	$ 1	1,164,318	23	(644,986)
Beginning balance (in shares) at Dec. 31, 2019	121,674,568	121,674,568
Beginning balance at Dec. 31, 2019	$ 394,757	$ 1	1,188,810	0	(794,054)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock, net of issuance costs (in shares)		7,973,967
Issuance of common stock, net of    issuance costs	56,575		56,575
Proceeds from sale of stock under employee stock purchase plan (in shares)		115,024
Proceeds from sale of stock under    employee stock purchase plan	451		451
Exercise of options (in shares)		64,126
Exercise of options	412		412
Share-based compensation expense	4,916		4,916
Restricted stock unit vesting (in shares)		423,755
Restricted stock unit vesting	0
Net loss	(60,747)				(60,747)
Ending balance (in shares) at Mar. 31, 2020		130,251,440
Ending balance at Mar. 31, 2020	$ 396,364	$ 1	1,251,164	0	(854,801)
Beginning balance (in shares) at Dec. 31, 2019	121,674,568	121,674,568
Beginning balance at Dec. 31, 2019	$ 394,757	$ 1	1,188,810	0	(794,054)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax	(9)
Net loss	$ (236,498)
Ending balance (in shares) at Jun. 30, 2020	143,129,409	143,129,409
Ending balance at Jun. 30, 2020	$ 370,260	$ 1	1,400,820	(9)	(1,030,552)
Beginning balance (in shares) at Mar. 31, 2020		130,251,440
Beginning balance at Mar. 31, 2020	396,364	$ 1	1,251,164	0	(854,801)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock, net of issuance costs (in shares)		12,650,000
Issuance of common stock, net of    issuance costs	142,383		142,383
Exercise of options (in shares)		48,103
Exercise of options	409		409
Share-based compensation expense	6,864		6,864
Restricted stock unit vesting (in shares)		179,866
Restricted stock unit vesting	0
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax	(9)			(9)
Net loss	$ (175,751)				(175,751)
Ending balance (in shares) at Jun. 30, 2020	143,129,409	143,129,409
Ending balance at Jun. 30, 2020	$ 370,260	$ 1	$ 1,400,820	$ (9)	$ (1,030,552)

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Condensed Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	Jun. 30, 2020	Dec. 31, 2019
Statement of Stockholders' Equity [Abstract]
Common stock, par value (in dollars per share)	$ 0.00001	$ 0.00001

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Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Operating activities:
Net loss	$ (236,498)	$ (130,591)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	1,045	1,026
Amortization of intangibles	18,201	18,200
Intangible asset impairment charge	115,527	0
Amortization of premium/discount on investments	(2)	(685)
Non-cash interest expense	872	339
Non-cash operating lease expense	(1,164)	(1,097)
Fair value step-up of inventory sold or written off	31,116	33,587
Write-down of inventory	10,089	3,023
Change in excess inventory purchase commitments	10,954	0
Stock-based compensation	11,780	4,378
Deferred income taxes	0	(3,602)
Change in fair value of derivative liability	240	0
Changes in operating assets and liabilities:
Accounts receivable	(251)	(12,222)
Inventory	(5,680)	(17,188)
Prepaid expenses and other current assets	(3,277)	(11,337)
Other long-term assets	57	3,371
Accounts payable	(4,979)	(19,628)
Accrued expense	13,611	(28,126)
Operating lease liabilities	869	1,072
Deferred revenue	(14,879)	(16,815)
Net cash used in operating activities	(52,369)	(176,295)
Investing activities:
Purchase of equipment	(45)	(3,906)
Purchase of available for sale securities	(49,950)	0
Proceeds from the maturities of available for sale securities	245	103,691
Proceeds from sales of available for sale securities	0	64,721
Net cash provided by (used in) investing activities	(49,750)	164,506
Financing activities:
Proceeds from the issuance of common stock, net of issuance costs	198,883	9,035
Proceeds from the sale of stock under employee stock purchase plan	451	188
Proceeds from the exercise of stock options	821	560
Retirement of treasury stock	0	(426)
Payments on debt	0	(15,000)
Net cash provided by (used in) financing activities	200,155	(5,643)
Increase (decrease) in cash, cash equivalents, and restricted cash	98,036	(17,432)
Cash, cash equivalents, and restricted cash at beginning of the period	149,804	107,099
Cash, cash equivalents, and restricted cash at end of the period	247,840	89,667
Non-cash financing activities
Unpaid offering costs	$ 75	$ 0

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Nature of Organization and Operations

6 Months Ended

Jun. 30, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Nature of Organization and Operations

Nature of Organization and Operations

Akebia Therapeutics, Inc., referred to as Akebia or the Company, was incorporated in the State of Delaware in 2007. Akebia is a biopharmaceutical company with the purpose of bettering the lives of people living with kidney disease. Akebia’s lead investigational product candidate, vadadustat, is an oral therapy in Phase 3 development. The Company believes vadadustat has the potential to set a new standard of care in the treatment of anemia due to chronic kidney disease, or CKD, acting via a novel hypoxia inducible factor, or HIF, pathway. HIF is the primary regulator of the production of red blood cells, or RBCs, in the body, as well as other important metabolic functions. In June 2020, vadadustat was approved in Japan as a treatment for anemia due to CKD in both dialysis-dependent and non-dialysis dependent adult patients under the trade name VAFSEO. In addition to vadadustat, the Company has a commercial product, Auryxia® (ferric citrate), which is currently approved by the U.S. Food and Drug Administration, or FDA, and marketed for two indications in the United States: the control of serum phosphorus levels in adult patients with CKD on dialysis, or DD-CKD, and the treatment of iron deficiency anemia, or IDA, in adult patients with CKD not on dialysis, or NDD-CKD. Ferric citrate is also approved and marketed in Japan as an oral treatment for the improvement of hyperphosphatemia in patients with DD-CKD and NDD-CKD under the trade name Riona® (ferric citrate hydrate).

Since inception, the Company has devoted most of its resources to research and development, including its preclinical and clinical development activities, and providing general and administrative support for these operations. The Company began recording revenue from the U.S. sales of Auryxia and revenue from sublicensing rights to Auryxia in Japan to the Company’s Japanese partners Japan Tobacco, Inc. and its subsidiary Torii Pharmaceutical Co., Ltd., collectively, JT and Torii, on December 12, 2018 following the consummation of a merger with Keryx Biopharmaceuticals, Inc., or Keryx, or the Merger. Additionally, following regulatory approval of vadadustat in Japan in the second quarter of 2020, the Company is eligible to receive royalty revenues of up to 20% from Mitsubishi Tanabe Pharma Corporation, or MTPC, from the sale of VAFSEO. The Company has not generated a profit to date and may never generate profits from product sales. The Company’s product candidates are subject to long development cycles, and the Company may be unsuccessful in its efforts to develop, obtain marketing approval for or market its product candidates. If the Company does not successfully commercialize any of its products or product candidates, it may be unable to achieve profitability.

The Company’s management completed its going concern assessment in accordance with ASC 205-40, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern, or ASC 205-40. The Company believes that its cash resources will be sufficient to allow the Company to fund its current operating plan beyond the next twelve months from the filing of this Quarterly Report on Form 10-Q, as required by ASC 205-40. There can be no assurance, however, that the current operating plan will be achieved in the time frame anticipated by the Company, or that its cash resources will fund the Company’s operating plan for the period anticipated by the Company or that additional funding will be available on terms acceptable to the Company, or at all. The Company will require additional capital to pursue development and commercial activities related to expanded indications for current products and any additional products and product candidates. The Company expects to finance future cash needs through product revenue, public or private equity or debt transactions, payments from its collaborators, royalty transactions, strategic transactions, or a combination of these approaches. However, adequate additional financing may not be available to the Company on acceptable terms, or at all. If the Company is unable to raise capital in sufficient amounts when needed or on attractive terms, it may not be able to pursue development and commercial activities related to expanded indications for current products and any additional products and product candidates.

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Summary of Significant Accounting Policies

6 Months Ended

Jun. 30, 2020

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the U.S., or GAAP, for interim financial reporting and as required by Regulation S-X, Rule 10-01. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. Any reference in these notes to applicable guidance is meant to refer to the authoritative U.S. GAAP as found in the Accounting Standards Codification, or ASC, and Accounting Standards Update, or ASU, of the Financial Accounting Standards Board, or FASB.

In the opinion of management, all adjustments, consisting of normal recurring accruals and revisions of estimates, considered necessary for a fair presentation of the unaudited condensed consolidated financial statements have been included. Interim results for the three and six months ended June 30, 2020 are not necessarily indicative of the results that may be expected for the fiscal year ending December 31, 2020 or any other future period.

The accompanying unaudited condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. Management has determined that the Company operates in one segment, which is the business of developing and commercializing novel therapeutics for people with kidney disease. The information included in this Quarterly Report on Form 10-Q should be read in conjunction with the Company’s consolidated financial statements and the accompanying notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019 filed with the U.S. Securities and Exchange Commission on March 12, 2020, or the 2019 Annual Report on Form 10-K.

The significant accounting policies used in preparation of these unaudited condensed consolidated financial statements for the three and six months ended June 30, 2020 are consistent with those discussed in Note 2 to the consolidated financial statements in the Company’s 2019 Annual Report on Form 10-K and are updated below as necessary.

New Accounting Pronouncements – Recently Adopted

In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which requires that financial assets measured at amortized cost be presented at the net amount expected to be collected. Previously, U.S. GAAP delayed recognition of the full amount of credit losses until the loss was probable of occurring. Under this ASU, the income statement will reflect an entity’s current estimate of all expected credit losses. The Company adopted this new standard on January 1, 2020 using the modified retrospective approach, which requires a cumulative-effect adjustment, if any, to the opening balance of retained earnings to be recognized on the date of adoption with prior periods not restated. The cumulative-effect adjustment recorded on January 1, 2020, is not material. Please see the description of the Company’s “Credit Losses” accounting policy in the “Significant Accounting Policies” section below.

In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement, which modifies the disclosure requirements for fair value measurements. The Company adopted this new standard on January 1, 2020 using the prospective approach for amendments applicable to the Company. The adoption of this standard did not have a material impact on the Company’s unaudited condensed consolidated financial statements and related disclosures.

In August 2018, the FASB issued ASU 2018-15, Intangible-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That is a Service Contract. This standard clarifies the accounting for implementation costs in cloud computing arrangements. This standard became effective for us on January 1, 2020, and was adopted on a prospective basis. The adoption of this standard did not have a material impact to the Company’s unaudited condensed consolidated financial statements and disclosures.

In November 2018, the FASB issued ASU 2018-18, Collaborative Arrangements (Topic 808): Clarifying the Interaction between Topic 808 and Topic 606. This standard makes targeted improvements for collaborative arrangements as follows:

•Clarifies that certain transactions between collaborative arrangement participants should be accounted for as revenue under ASC 606, Revenue from Contracts with Customers, when the collaborative arrangement participant is a customer in the context of a unit of account. In those situations, all the guidance in ASC 606 should be applied, including recognition, measurement, presentation and disclosure requirements;

•Adds unit-of-account guidance to ASC 808, Collaborative Arrangements, to align with the guidance in ASC 606 (that is, a distinct good or service) when an entity is assessing whether the collaborative arrangement or a part of the arrangement is within the scope of ASC 606; and

•Precludes a company from presenting transactions with collaborative arrangement participants that are not directly related to sales to third parties with revenue recognized under ASC 606 if the collaborative arrangement participant is not a customer.

This standard became effective for the Company on January 1, 2020, and did not have a material impact on the Company’s unaudited condensed consolidated financial statements and related disclosures.

New Accounting Pronouncements – Not Yet Adopted

In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. This ASU is effective for fiscal years beginning after December 15, 2020, including interim periods therein, and is applicable to the Company in fiscal year 2021. Early adoption is permitted. ASU 2019-12 requires certain amendments to be applied using a modified retrospective approach, which requires a cumulative-effect adjustment to retained earnings as of the beginning of the fiscal year of adoption, while other amendments should be applied on a prospective basis. The Company does not expect that the adoption of this standard will have a material impact on the Company’s unaudited condensed consolidated financial statements and related disclosures.

Derivative Financial Instruments

The Company accounts for warrants and other derivative financial instruments as either equity or liabilities in accordance with ASC Topic 815, Derivatives and Hedging, or ASC 815, based upon the characteristics and provisions of each instrument. Warrants classified as equity are recorded at fair value as of the date of issuance on the Company’s unaudited condensed consolidated balance sheets and no further adjustments to their valuation are made. Warrants classified as derivative liabilities and other derivative financial instruments that require separate accounting as liabilities are recorded on the Company’s unaudited condensed consolidated balance sheets at their fair value on the date of issuance and will be revalued on each subsequent balance sheet date until such instruments are exercised or expire, with any changes in the fair value between reporting periods recorded as other income or expense. The warrant issued by the Company in connection with the Janssen Pharmaceutica NV Research and License Agreement, the Janssen Agreement, is classified as equity in the Company’s unaudited condensed consolidated balance sheet. (See Note 12). The derivative liability recorded in connection with the Company’s Loan Agreement with Pharmakon is classified as a liability in the Company’s unaudited condensed consolidated balance sheet. (See Note 11).

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results may differ from those estimates. Management considers many factors in selecting appropriate financial accounting policies and controls, and in developing the estimates and assumptions that are used in the preparation of these financial statements. Management must apply significant judgment in this process. In addition, other factors may affect estimates, including expected business and operational changes, sensitivity and volatility associated with the assumptions used in developing estimates, and whether historical trends are expected to be representative of future trends. The estimation process often may yield a range of potentially reasonable estimates of the ultimate future outcomes, and management must select an amount that falls within that range of reasonable estimates. Estimates are used in the following areas, among others: prepaid and accrued research and development expense, operating lease assets and liabilities, derivative liabilities, other non-current liabilities, stock-based compensation expense, product and collaboration revenues including various rebates and reserves related to product sales, inventories, income taxes, intangible assets and goodwill. The Company has made estimates of the impact of COVID-19 within the unaudited condensed consolidated financial statements and there may be changes to those estimates in future periods including changes to sales, payer mix, reserves and allowances, intangible assets and goodwill. While the COVID-19 pandemic has not had a material adverse impact on the Company’s financial condition, the future impacts of the pandemic and any resulting economic impact is largely unknown and rapidly evolving.

Credit Losses

Available for sale debt securities. Management determines the appropriate classification of securities at the time of purchase and reevaluates such designation as of each balance sheet date. The Company classifies all securities as available for sale and includes them in current assets as they are intended to fund current operations. The Company's investment portfolio at any point in time contains investments in money market mutual funds, U.S. government debt securities, certificates of deposit and corporate debt securities. The Company segments its portfolio based on the underlying risk profiles of the securities and have a zero loss expectation for money market mutual funds, U.S. government debt securities and certificates of deposit. The Company regularly reviews the securities in an unrealized loss position and evaluates the current expected credit loss by considering factors such as historical experience, market data, issuer-specific factors, and current economic conditions. Factors considered also include whether a decline in fair value below the amortized cost basis is due to credit-related factors or noncredit-related factors, the financial condition and near-term prospects of the issuer, and our intent and ability to hold the investment to allow for an anticipated recovery in fair value. Any unrealized loss that is not credit related is recognized in other comprehensive (loss) income in the unaudited condensed consolidated statements of operations. A credit-related unrealized loss is recognized as an allowance on the unaudited condensed consolidated balance sheets with a corresponding adjustment to earnings in the unaudited condensed consolidated statements of operations.

Cash, Cash Equivalents, and Restricted Cash

Cash and cash equivalents consist of all cash on hand, deposits and funds invested in available for sale securities with original maturities of three months or less at the time of purchase. Cash equivalents are reported at fair value. At June 30, 2020, the Company’s cash is primarily in money market funds. The Company may maintain balances with its banks in excess of federally insured limits.

Restricted cash represents amounts required for security deposits under the Company’s office and lab space lease agreements and, at June 30, 2019, cash balances held as collateral for the Company’s employee credit card program. Restricted cash is included in “prepaid expenses and other current assets” and “other assets” in the unaudited condensed consolidated balance sheets.

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported in the unaudited condensed consolidated balance sheet that sum to the total of the amounts reported in the unaudited condensed consolidated statement of cash flows (in thousands):

	June 30, 2020		June 30, 2019
Cash and cash equivalents	$	245,406	$	87,212
Prepaid expenses and other current assets	395		363
Other assets	2,039		2,092
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows	$	247,840	$	89,667

Property and Equipment

Property and equipment is stated at cost, less accumulated depreciation. Assets under capital lease are included in property and equipment. Property and equipment is depreciated using the straight-line method over the estimated useful lives of the assets, generally three years to seven years. Such costs are periodically reviewed for recoverability when impairment indicators are present. Such indicators include, among other factors, operating losses, unused capacity, market value declines and technological obsolescence. Recorded values of asset groups of equipment that are not expected to be recovered through undiscounted future net cash flows are written down to current fair value, which generally is determined from estimated discounted future net cash flows (assets held for use) or net realizable value (assets held for sale).

The following is the summary of property and equipment and related accumulated depreciation as of June 30, 2020 and December 31, 2019.

	Useful Life			June 30, 2020		December 31, 2019
				(in thousands)
Computer equipment and software		3		$	1,010	$	1,010
Furniture and fixtures	5	-	7	2,131		2,086
Equipment		7		2,451		2,451
Leasehold improvements	Shorter of the useful life or remaining lease term (10 years)			8,497		8,497
				14,089		14,044
Less accumulated depreciation				(4,709)		(3,664)
Net property and equipment				$	9,380	$	10,380

Depreciation expense was approximately $0.5 million and $0.6 million for the three months ended June 30, 2020 and 2019, respectively, and approximately $1.0 million for each of the six months ended June 30, 2020 and 2019.

Inventory

The Company values its inventories at the lower-of-cost or net realizable value. The Company determines the cost of its inventories, which includes amounts related to materials and manufacturing overhead, on a first-in, first-out basis. The

Company classifies its inventory costs as long-term, in other assets in its unaudited condensed consolidated balance sheets, when it expects to utilize the inventory beyond their normal operating cycle.

Prior to the regulatory approval of its product candidates, the Company incurs expenses for the manufacture of material that could potentially be available to support the commercial launch of its products. Until the first reporting period when regulatory approval has been received or is otherwise considered probable and the future economic benefit is expected to be realized, the Company records all such costs as research and development expense. Inventory used in clinical trials is also expensed as research and development expense, when selected for such use. Inventory that can be used in either the production of clinical or commercial products is expensed as research and development costs when identified for use in a clinical manufacturing campaign.

The Company performs an assessment of the recoverability of capitalized inventory during each reporting period, and writes down any excess and obsolete inventory to its net realizable value in the period in which the impairment is first identified. Such impairment charges, should they occur, are recorded as a component of cost of product sales in the unaudited condensed consolidated statements of operations and comprehensive loss. The determination of whether inventory costs will be realizable requires the use of estimates by management. If actual market conditions are less favorable than projected by management, additional write-downs of inventory may be required. Additionally, the Company’s product is subject to strict quality control and monitoring that it performs throughout the manufacturing process. The Company will record a charge, in the event that certain batches or units of product do not meet quality specifications, to cost of product sales to write-down any unmarketable inventory to its estimated net realizable value. In all cases, product inventory is carried at the lower of cost or its estimated net realizable value.

Debt

The Company performs an assessment of all embedded features of a debt instrument to determine if (1) such features should be bifurcated and separately accounted for, and (2) if bifurcation requirements are met, whether such features should be classified and accounted for as equity or liability instruments. If the embedded feature meets the requirements to be bifurcated and accounted for as a liability, the fair value of the embedded feature is measured initially, included as a liability on the unaudited condensed consolidated balance sheet, and re-measured to fair value at each reporting period. Any changes in fair value are recorded in the unaudited condensed consolidated statement of operations. The Company monitors, on an ongoing basis, whether events or circumstances could give rise to a change in the classification of embedded features.

Revenue Recognition

The Company generates revenues primarily from sales of Auryxia, see Note 3, and from its collaborations with MTPC and Otsuka, see Note 4. The Company recognizes revenue in accordance with ASC 606, which applies to all contracts with customers, except for contracts that are within the scope of other standards. Under ASC 606, the Company recognizes revenue when its customer obtains control of promised goods or services, in an amount that reflects the consideration which the entity expects to receive in exchange for those goods or services. To determine revenue recognition for arrangements that the Company determines are within the scope of ASC 606, it performs the following five steps:

(i)identify the contract(s) with a customer;

(ii)identify the performance obligations in the contract;

(iii)determine the transaction price;

(iv)allocate the transaction price to the performance obligations in the contract; and

(v)recognize revenue when (or as) the entity satisfies a performance obligation.  

The Company only applies the five-step model to contracts when it is probable that the entity will collect the consideration it is entitled to in exchange for the goods or services it transfers to the customer. At contract inception, once the contract is determined to be within the scope of ASC 606, the Company assesses the goods or services promised within each contract and determines those that are performance obligations, and assesses whether each promised good or service is distinct. The Company then recognizes as revenue the amount of the transaction price that is allocated to the respective performance obligation when (or as) the performance obligation is satisfied. 

The Company does not include a financing component to its estimated transaction price at contract inception unless it estimates that certain performance obligations will not be satisfied within one year. Additionally, the Company recognizes the incremental costs of obtaining a contract as an expense when incurred if the amortization period of the asset that the Company otherwise would have recognized is one year or less.

Product Revenue, Net

The Company sells Auryxia in the United States, or U.S., primarily to wholesale distributors as well as certain specialty pharmacy providers, collectively, Customers. These Customers resell the Company’s product to health care providers and patients. In addition to distribution agreements with Customers, the Company enters into arrangements with health care providers and payors that provide for government-mandated and/or privately-negotiated rebates, chargebacks, and discounts with respect to the purchase of the Company’s product.

The Company recognizes revenue on product sales when the Customer obtains control of the Company’s product, which occurs at a point in time, typically upon delivery to the Customer. The Company expenses incremental costs of obtaining a contract as and when incurred if the expected amortization period of the asset that it would have recognized is one year or less.

Reserves for Variable Consideration

Revenue from product sales is recorded at the net sales price (transaction price), which includes estimates of variable consideration for which reserves are established and which result from discounts, returns, chargebacks, rebates, co-pay assistance and other allowances that are offered within contracts between the Company and its Customers, health care providers, payors and other indirect customers relating to the Company’s sales of its products. These reserves are based on the amounts earned or to be claimed on the related sales and are classified as reductions of accounts receivable (if the amount will be credited to the Customer) or as a current liability (if the amount is payable to a Customer or a party other than a Customer). When appropriate, these estimates take into consideration a range of possible outcomes which are probability-weighted in accordance with the expected value method in ASC 606 for relevant factors such as the Company’s historical experience, current contractual and statutory requirements, specific known market events and trends, industry data, and forecasted customer buying and payment patterns. Overall, these reserves reflect the Company’s best estimates of the amount of consideration to which it is entitled based on the terms of the respective underlying contracts.

The amount of variable consideration that is included in the transaction price may be constrained, and is included in the net sales price only to the extent that it is probable that a significant reversal in the amount of the cumulative revenue recognized will not occur in a future period.  Actual amounts of consideration ultimately received may differ from the Company’s estimates.  If actual results in the future vary from the Company’s estimates, the Company will adjust these estimates, which would affect net product revenue and earnings in the period such variances become known.

Trade Discounts and Allowances: The Company generally provides Customers with discounts that include incentive fees that are explicitly stated in the Company’s contracts and are recorded as a reduction of revenue in the period the related product revenue is recognized. In addition, the Company compensates (through trade discounts and allowances) its Customers for sales order management, data, and distribution services. However, the Company has determined such services received to date are not distinct from the Company’s sale of products to the Customer and, therefore, these payments have been recorded as a reduction of revenue within the unaudited condensed consolidated statement of operations and comprehensive loss through June 30, 2020. The Company records a corresponding reduction of accounts receivable (if the trade discount and/or allowance will be credited to the Customer) or an increase in accrued expense (if the trade discount and/or allowance is payable to a Customer) on the unaudited condensed consolidated balance sheets.

Product Returns: Consistent with industry practice, the Company generally offers Customers a limited right of return which allows for the product to be returned when the product expiry is within an allowable window, when the quantity delivered is different than quantity ordered, the product is damaged in transit prior to receipt by the customer, or is subject to a recall. This right of return generally lapses once the product is provided to a patient. The Company estimates the amount of its product sales that may be returned for credit by its Customers and records this estimate as a reduction of revenue in the period the related product revenue is recognized. The Company currently estimates product return reserve using available industry data and its own historical sales information, including its visibility into the inventory remaining in the distribution channel.

Provider Chargebacks and Discounts: Chargebacks for fees and discounts to providers represent the estimated obligations resulting from contractual commitments to sell products to qualified healthcare providers at prices lower than the list prices charged to Customers who directly purchase the product from the Company. Customers charge the Company for the difference between what they pay for the product and the ultimate selling price to the qualified healthcare providers. These reserves are established in the same period that the related revenue is recognized, resulting in a reduction of product revenue and accounts receivable. Chargeback amounts are generally determined at the time of resale to the qualified healthcare provider by Customers, and the Company generally issues credits for such amounts within a few weeks of the Customer’s resale of the product. Reserves for chargebacks consist of credits that the Company expects to issue for units that remain in the distribution

channel at each reporting period end that the Company expects will be sold to qualified healthcare providers, and chargebacks that Customers have claimed but for which the Company has not yet issued a credit.

Commercial and Medicare Part D Rebates: The Company contracts with various commercial payor organizations, primarily health insurance companies and pharmacy benefit managers, for the payment of rebates with respect to utilization of its products. The Company estimates the rebates for commercial and Medicare Part D payors based upon (i) its contracts with the payors and (ii) information obtained from its Customers and other third parties regarding the payor mix for Auryxia. The Company estimates these rebates and records such estimates in the same period the related revenue is recognized, resulting in a reduction of product revenue and the establishment of a current liability.

Other Government Rebates: The Company is subject to discount obligations under state Medicaid programs and other government programs. The Company estimates its Medicaid and other government programs rebates based upon a range of possible outcomes that are probability-weighted for the estimated payor mix. These reserves are recorded in the same period the related revenue is recognized, resulting in a reduction of product revenue and the establishment of a current liability which is included in accrued expenses and other current liabilities on the unaudited condensed consolidated balance sheets. For Medicare, the Company also estimates the number of patients in the prescription drug coverage gap for whom the Company will owe an additional liability under the Medicare Part D program. The Company’s liability for these rebates consists of invoices received for claims from prior quarters that have not been paid or for which an invoice has not yet been received, estimates of claims for the current quarter, and estimated future claims that will be made for product that has been recognized as revenue, but which remains in the distribution channel at the end of each reporting period.

Other Incentives:  Other incentives that the Company offers include voluntary patient assistance programs such as the Company’s co-pay assistance program, which are intended to provide financial assistance to qualified commercially insured patients with prescription drug co-payments required by payors. The calculation of the accrual for co-pay assistance is based on actual claims processed during a given period, as well as historical utilization data to estimate the amount the Company expects to receive associated with product that has been recognized as revenue, but remains in in the distribution channel at the end of each reporting period.

Collaboration Revenues

The Company enters into out-license and collaboration agreements which are within the scope of ASC 606, under which it licenses certain rights to its product candidates to third parties. The terms of these arrangements typically include payment to the Company of one or more of the following: non-refundable, up-front license fees; development, regulatory, and commercial milestone payments; payments for manufacturing supply services the Company provides through its contract manufacturers; and royalties on net sales of licensed products. Each of these payments may result in license, collaboration and other revenue, except for revenues from royalties on net sales of licensed products, which are classified as royalty revenues.

In determining the appropriate amount of revenue to be recognized as the Company fulfills its obligations under each of its agreements, the Company implements the five-step model noted above. As part of the accounting for these arrangements, the Company must develop assumptions that require judgment to determine whether the individual promises should be accounted for as separate performance obligations or as a combined performance obligation, and to determine the stand-alone selling price for each performance obligation identified in the contract. A deliverable represents a separate performance obligation if both of the following criteria are met: (i) the customer can benefit from the good or service either on its own or together with other resources that are readily available to the customer, and (ii) the entity’s promise to transfer the good or service to the customer is separately identifiable from other promises in the contract. The Company uses key assumptions to determine the stand-alone selling price, which may include forecasted revenues, development timelines, reimbursement rates for personnel costs, discount rates, and probabilities of technical and regulatory success. With regard to the MTPC and Otsuka collaboration agreements, the Company recognizes revenue related to amounts allocated to the identified performance obligation on a proportional performance basis as the underlying services are performed.

Licenses of Intellectual Property

If the license to the Company’s intellectual property is determined to be distinct from the other performance obligations identified in an out-license and collaboration arrangement, the Company recognizes revenue from non-refundable, up-front fees allocated to the license when the license is transferred to the customer and the customer is able to use and benefit from the license. For licenses that are bundled with other promises, the Company utilizes judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress for purposes of recognizing revenue from non-refundable, up-front fees. The Company evaluates the measure of progress each reporting period and, if necessary, adjust the measure of performance and related revenue recognition.

Milestone Payments

At the inception of each arrangement that includes development milestone payments, the Company evaluates whether the milestones are considered probable of being reached and estimates the amount to be included in the transaction price using the most likely amount method. The Company evaluates factors such as the scientific, clinical, regulatory, commercial, and other risks that must be overcome to assess the milestone as probable of being achieved. There is considerable judgment involved in determining whether a milestone is probable of being reached at each specific reporting period. Milestone payments that are not within the control of the Company or the customer, such as regulatory approvals, are not considered probable of being achieved until those approvals are received. If it is probable that a significant revenue reversal would not occur, the associated milestone value is included in the transaction price. The transaction price is then allocated to each performance obligation on a relative stand-alone selling price basis, for which the Company recognizes revenues as, or when, the performance obligations under the contract are satisfied. At the end of each subsequent reporting period, the Company re-evaluates the probability of achievement of such development milestones and any related constraint, and if necessary, adjusts its estimate of the overall transaction price. Any such adjustments are recorded on a cumulative catch-up basis, which would affect collaboration revenue in the period of adjustment.  

Manufacturing Supply Services

Arrangements that include a promise for future supply of drug substance or drug product for either clinical development or commercial supply at the licensee’s discretion are generally considered as options. The Company assesses if these options provide a material right to the licensee and if so, they are accounted for as separate performance obligations. If the Company is entitled to additional payments when the licensee exercises these options, any additional payments are recorded in license, collaboration and other revenues when the licensee obtains control of the goods, which is upon delivery.

Royalties

The Company will recognize sales-based royalties, including milestone payments based on the level of sales, at the later of (i) when the related sales occur, or (ii) when the performance obligation to which some or all of the royalty has been allocated has been satisfied (or partially satisfied). The Company receives royalty payments from JT and Torii, based on net sales of Riona in Japan.

Collaborative Arrangements

The Company records the elements of its collaboration agreements that represent joint operating activities in accordance with ASC Topic 808, Collaborative Arrangements (ASC 808). Accordingly, the elements of the collaboration agreements that represent activities in which both parties are active participants and to which both parties are exposed to the significant risks and rewards that are dependent on the commercial success of the activities are recorded as collaborative arrangements. The Company considers the guidance in ASC 606-10-15, Revenue from Contracts with Customers – Scope and Scope Exceptions, in determining the appropriate treatment for the transactions between the Company and its collaborative partner and the transactions between the Company and third parties. Generally, the classification of transactions under the collaborative arrangements is determined based on the nature and contractual terms of the arrangement along with the nature of the operations of the participants. Therefore, the Company recognizes its allocation of the shared costs incurred with respect to the jointly conducted medical affairs and commercialization and non-promotional activities under the Otsuka U.S. Agreement, as defined below in Note 4, as a component of the related expense in the period incurred. During the three months ended June 30, 2020 and 2019, the Company incurred approximately $0.2 million and $0.3 million, respectively, of costs related to the cost-sharing provisions of the Otsuka U.S. Agreement, of which approximately $0.1 million are reimbursable by Otsuka and recorded as a reduction to research and development expense during each of the three months ended June 30, 2020 and 2019. During the three months ended June 30, 2020 and 2019, Otsuka incurred approximately $0.4 million and $0.1 million, respectively, of costs related to the cost-sharing provisions of the Otsuka U.S. Agreement, of which approximately $0.2 million and $0.1 million are reimbursable by the Company and recorded as an increase to research and development expense during the three months ended June 30, 2020 and 2019, respectively. To the extent product revenue is generated from the collaboration, the Company recognizes its share of the net sales on a gross basis if it is deemed to be the principal in the transactions with customers, or on a net basis if it is instead deemed to be the agent in the transactions with customers, consistent with the guidance in ASC 606.

Intangible Assets

The Company maintains a definite-lived intangible asset related to developed product rights for Auryxia, which was acquired on December 12, 2018 as part of the Merger.

Intangible assets are initially recorded at fair value and stated net of accumulated amortization and impairments. The Company amortizes its intangible assets that have finite lives using either the straight-line method, or if reliably determinable, based on the pattern in which the economic benefit of the asset is expected to be utilized. Amortization for the Company’s intangible asset is recorded over its estimated useful life, which as of June 30, 2020 is estimated to be seven years.

The Company reviews intangible assets subject to amortization to determine if any adverse conditions exist or a change in circumstances has occurred that would indicate impairment or a change in the remaining useful life. If an impairment indicator exists, the Company performs a recoverability test by comparing the sum of the estimated undiscounted cash flows of the intangible asset group to its carrying value on the unaudited condensed consolidated balance sheet. If the carrying value of the intangible asset group exceeds the undiscounted cash flows used in the recoverability test, the Company will write the carrying value of the intangible asset group down to the fair value in the period identified. The Company calculates the fair value of the intangible asset group as the present value of estimated future cash flows expected to be generated from the intangible asset group using a risk-adjusted discount rate. In determining estimated future cash flows associated with its intangible asset group, the Company uses market participant assumptions pursuant to ASC Topic 820, Fair Value Measurements and Disclosures (ASC 820). During the second quarter of 2020, the Company identified indicators of impairment related to the developed product rights for Auryxia and recorded an impairment charge of $115.5 million (see Note 9 for additional information).

Goodwill

The Company allocates any excess purchase price over the fair value of the net tangible and intangible assets acquired in a business combination to goodwill. Goodwill is evaluated for impairment on an annual basis as of October 1, and more frequently if indicators are present or changes in circumstances suggest that impairment may exist.

The Company compares the fair value of its reporting unit to its carrying value. If the carrying value of the net assets assigned to the reporting unit exceeds the fair value of its reporting unit, the Company would record an impairment loss equal to the difference. As described above, the Company operates in one operating segment which the Company considers to be the only reporting unit.

Fair Value of Financial Instruments

The Company is required to disclose information on all assets and liabilities reported at fair value that enables an assessment of the inputs used in determining the reported fair values. ASC 820 establishes a hierarchy of inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the observable inputs be used when available.

Observable inputs are inputs that market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions about the inputs that market participants would use in pricing the asset or liability, and are developed based on the best information available in the circumstances. The fair value hierarchy applies only to the valuation inputs used in determining the reported fair value of the investments, and is not a measure of the investment credit quality. The three levels of the fair value hierarchy are described below:

•Level 1 – Valuations based on unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date.

•Level 2 – Valuations based on quoted prices for similar assets or liabilities in markets that are not active, or for which all significant inputs are observable, either directly or indirectly.

•Level 3 – Valuations that require inputs that reflect the Company’s own assumptions that are both significant to the fair value measurement and unobservable.

To the extent that valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires more judgment. Accordingly, the degree of judgment exercised by the Company in determining fair value is greatest for instruments categorized in Level 3. A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement.

Items measured at fair value on a recurring basis include available for sale securities and derivative liabilities (see Note 7). The carrying amounts of prepaid expenses and other current assets, accounts payable and accrued expenses approximate their fair values due to their short-term maturities.

Items measured at fair value on a nonrecurring basis include property and equipment, intangible assets and goodwill. The Company remeasures the fair value of these assets upon the occurrence of certain events. There were no such remeasurements

to property and equipment during either of the three and six months ended June 30, 2020 and 2019. During the three months ended June 30, 2020, the Company identified indicators of impairment related to the developed product rights for Auryxia, an intangible asset measured using Level 3 inputs, and recorded an impairment charge of $115.5 million (see Note 9 for additional information). There were no other impairments to assets measured using Level 3 inputs during either of the three and six months ended June 30, 2020 and no impairments to assets measured using Level 3 inputs during either of the three and six months ended June 30, 2019.

The Company’s other financial instruments mainly consists of debt (see Note 11).

Net Loss per Share

Basic net loss per share is calculated by dividing net loss by the weighted-average shares outstanding during the period, without consideration for common stock equivalents. Diluted net loss per share is calculated by adjusting weighted-average shares outstanding for the dilutive effect of common stock equivalents outstanding for the period, determined using the treasury-stock method. For purposes of the diluted net loss per share calculation, preferred stock, stock options, warrants, restricted stock and RSUs are considered to be common stock equivalents, but have been excluded from the calculation of diluted net loss per share, as their effect would be anti-dilutive for all periods presented. Therefore, basic and diluted net loss per share were the same for all periods presented. Diluted net income per share is calculated by dividing the net income by the weighted-average common shares outstanding for the period, including any dilutive effect from outstanding options, warrants, restricted stock and RSUs using the treasury stock method.

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Product Revenue and Reserves for Variable Consideration

6 Months Ended

Jun. 30, 2020

Revenue from Contract with Customer [Abstract]

Product Revenue and Reserves for Variable Consideration

Product Revenue and Reserves for Variable Consideration

To date, the Company’s only source of product revenue has been product revenue from the U.S. sales of Auryxia, which it began recording on December 12, 2018 following the consummation of the Merger. Total net product revenue was $30.7 million and $29.1 million for the three months ended June 30, 2020 and 2019, respectively, and $59.9 million and $52.2 million for the six months ended June 30, 2020 and 2019, respectively. The following table summarizes activity in each of the product revenue allowance and reserve categories for the six months ended June 30, 2020 and 2019 (in thousands):

	Chargebacks and Discounts		Rebates, Fees and other Deductions		Returns		Total
Balance at December 31, 2019	$	738	$	30,552	$	253	$	31,543
Current provisions related to sales in current year	5,055		66,348		2,684		74,087
Adjustments related to prior year sales	(31)		638		44		651
Credits/payments made	(4,995)		(54,945)		(2,237)		(62,177)
Balance at June 30, 2020	$	767	$	42,593	$	744	$	44,104
Balance at December 31, 2018	$	516	$	22,861	$	360	$	23,737
Current provisions related to sales in current year	3,306		44,708		1,596		49,610
Adjustments related to prior year sales	(22)		479		—		457
Credits/payments made	(3,320)		(46,131)		(1,663)		(51,114)
Balance at June 30, 2019	$	480	$	21,917	$	293	$	22,690

Chargebacks, discounts and returns are recorded as a direct reduction of revenue on the unaudited condensed consolidated statement of operations with a corresponding reduction to accounts receivable on the unaudited condensed consolidated balance sheets. Rebates, distribution-related fees, and other sales-related deductions are recorded as a reduction in revenue on the unaudited condensed consolidated statement of operations with a corresponding increase to accrued liabilities or accounts payable on the unaudited condensed consolidated balance sheets.

Accounts receivable, net related to product sales was approximately $20.3 million and $23.0 million as of June 30, 2020 and December 31, 2019, respectively.

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License, Collaboration and Other Significant Agreements

6 Months Ended

Jun. 30, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

License, Collaboration and Other Significant Agreements

License, Collaboration and Other Significant Agreements

During the three and six months ended June 30, 2020 and 2019, the Company recognized the following revenues from its license, collaboration and other significant agreements and had the following deferred revenue balances as of June 30, 2020:

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
License, Collaboration and Other Revenue:	(in thousands)				(in thousands)
MTPC Agreement	$	15,000	$	10,000	$	15,000	$	10,000
Otsuka U.S. Agreement	25,888		37,519		$	64,465	$	63,742
Otsuka International Agreement	12,832		22,467		32,202		44,423
Total Proportional Performance Revenue	$	53,720	$	69,986	$	111,667	$	118,165
JT and Torii	1,740		1,491		2,866		2,719
MTPC Other Revenue	3,986		237		4,182		385
Total License, Collaboration and Other Revenue	$	59,446	$	71,714	$	118,715	$	121,269

	June 30, 2020
	Short-Term		Long-Term		Total
Deferred Revenue:	(in thousands)
Otsuka U.S. Agreement	$	15,378	$	20,557	$	35,935
Otsuka International Agreement	8,151		9,306		17,457
Vifor Agreement	—		4,679		4,679
Total	$	23,529	$	34,542	$	58,071

The following table presents changes in the Company’s contract assets and liabilities during the six months ended June 30, 2020 and 2019 (in thousands):

Six Months Ended June 30, 2020	Balance at Beginning of Period		Additions		Deductions		Balance at End of Period
Contract assets:
Accounts receivable(1)	$	15,822	$	118,368	$	(115,382)	$	18,808
Prepaid expenses and other current assets	$	—	$	756	$	—	$	756
Contract liabilities:
Deferred revenue	$	72,950	$	90,471	$	(105,350)	$	58,071
Accounts payable	$	—	$	5,651	$	—	$	5,651
Accrued expenses and other current liabilities	$	—	$	615	$	(615)	$	—
Six Months Ended June 30, 2019
Contract assets:
Other current assets	$	—	$	10,000	$	—	$	10,000
Accounts receivable(1)	$	1,587	$	81,830	$	(75,260)	$	8,157
Contract liabilities:
Deferred revenue	$	112,689	$	91,351	$	(108,166)	$	95,874
Accounts payable	$	13,492	$	—	$	(13,492)	$	—

(1)Excludes accounts receivable from other services related to clinical and regulatory activities performed by the Company on behalf of MTPC that are not included in the performance obligations identified under the MTPC Agreement as of June 30, 2020 and 2019 and December 31, 2019 and 2018. Also excludes accounts receivable related to amounts due to the Company from product sales which are included in the accompanying unaudited condensed consolidated balance sheet as of June 30, 2020 and December 31, 2019.

During the three and six months ended June 30, 2020 and 2019, the Company recognized the following revenues as a result of changes in the contract asset and contract liability balances in the respective periods (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
Revenue Recognized in the Period from:	2020		2019		2020		2019
Amounts included in deferred revenue at the beginning of the period	$	16,964	$	23,277	$	22,186	$	40,316
Performance obligations satisfied in previous periods	$	3,555	$	—	$	3,263	$	1,254

Mitsubishi Tanabe Pharma Corporation Collaboration Agreement

Summary of Agreement

On December 11, 2015, the Company and Mitsubishi Tanabe Pharma Corporation, or MTPC, entered into a collaboration agreement, or the MTPC Agreement, providing MTPC with exclusive development and commercialization rights to vadadustat in Japan and certain other Asian countries, collectively, the MTPC Territory. In addition, the Company will supply vadadustat for both clinical and commercial use in the MTPC Territory, subject to MTPC’s option to manufacture commercial drug product in the MTPC Territory.

The Company and MTPC agreed that, instead of including Japanese patients in the Company’s global Phase 3 program for vadadustat, MTPC would be the sponsor of a Phase 3 program for vadadustat in Japan. MTPC reported top-line data for the two Phase 3 pivotal trials and data from the two supportive Phase 3 studies in March 2019 and 52-week data for the two Phase 3 pivotal trials in November 2019. MTPC is responsible for the costs of the Phase 3 program in Japan and other studies required in Japan, and made no funding payments for the global Phase 3 program. In July 2019, MTPC submitted a Japanese New Drug Application, or JNDA, to the Ministry of Health, Labor and Welfare in Japan for manufacturing and marketing approval of vadadustat, as a treatment for anemia due to CKD, which triggered a $10.0 million regulatory milestone payment to the Company. In June 2020, vadadustat was approved in Japan for the treatment of anemia due to CKD, which triggered a $15.0 million regulatory milestone payment to the Company which was received in the third quarter of 2020. Vadadustat will be marketed by MTPC in Japan under the trade name VAFSEO.

The Company and MTPC have established a joint steering committee pursuant to the MTPC Agreement to oversee development and commercialization of vadadustat in the MTPC Territory, including approval of any development or commercialization plans. Unless earlier terminated, the MTPC Agreement will continue in effect on a country-by-country basis until the later of the following: expiration of the last-to-expire patent covering vadadustat in such country in the MTPC Territory; expiration of marketing or regulatory exclusivity in such country in the MTPC Territory; or ten years after the first commercial sale of vadadustat in such country in the MTPC Territory. MTPC may terminate the MTPC Agreement upon twelve months’ notice at any time after the second anniversary of the effective date of the MTPC Agreement. Either party may terminate the MTPC Agreement upon the material breach of the other party that is not cured within a specified time period or upon the insolvency of the other party.

MTPC is required to make certain milestone payments to the Company aggregating up to approximately $225.0 million upon the achievement of specified development, regulatory and commercial events. More specifically, the Company received $10.0 million in development milestone payments, and is eligible to receive up to $40.0 million in regulatory milestone payments, of which the Company received $10.0 million in relation to the JNDA filing in the third quarter of 2019 and earned an additional $15.0 million following regulatory approval of vadadustat in Japan in the second quarter of 2020, which the Company received in the third quarter of 2020, and up to $175.0 million in commercial milestone payments associated with aggregate sales of all products. In consideration for the exclusive license and other rights contained in the MTPC Agreement, MTPC also made a $20.0 million upfront payment as well as a payment of $20.5 million for Phase 2 studies in Japanese patients completed by the Company and reimbursed by MTPC. Additionally, if vadadustat is commercialized, the Company would be entitled to receive tiered double-digit royalty payments of up to 20% on sales of vadadustat in the MTPC Territory. Royalty payments are subject to certain reductions, including upon the introduction of competitive products in certain instances. Royalties are due on a country-by-country basis from the date of first commercial sale of a licensed product in a country until the last to occur of: (i) the expiration of the last to expire valid claim within the intellectual property covering the licensed product, (ii) the expiration of marketing or regulatory exclusivity in such country, or (iii) the tenth anniversary of the first commercial sale of such licensed product in such country. Due to the uncertainty of drug development and commercialization and the high historical failure rates associated therewith, although the Company has received $10.0 million in development milestones, a $10.0 million regulatory milestone, and earned a $15.0 million regulatory milestone following regulatory approval of vadadustat in Japan in the second

quarter of 2020, no additional milestone may ever be received from MTPC. The Company will recognize any revenue from MTPC royalties in the period in which the sales occur.

Revenue Recognition

The Company evaluated the elements of the MTPC Agreement in accordance with the provisions of ASC 606 and concluded that the contract counterparty, MTPC, is a customer. The Company’s arrangement with MTPC contains the following material promises under the contract at inception: (i) license under certain of the Company’s intellectual property to develop and commercialize vadadustat (the License Deliverable) in the MTPC Territory, (ii) clinical supply of vadadustat (the Clinical Supply Deliverable), (iii) knowledge transfer, (iv) Phase 2 dosing study research services (the Research Deliverable), and (v) rights to future know-how.

The Company has identified two performance obligations in connection with its material promises under the MTPC Agreement as follows: (i) License, Research and Clinical Supply Performance Obligation and (ii) Rights to Future Know-How Performance Obligation. Factors considered in making the assessment of which material promises will be accounted for as separate performance obligations included, among other things, the capabilities of the collaboration partner, whether any other vendor sells the item separately, whether the good or service is highly interdependent or highly interrelated to the other elements in the arrangement, and whether there are other vendors that can provide the items. Additionally, the MTPC Agreement does not include a general right of return.

The Company allocates the transaction price to each performance obligation based on the Company’s best estimate of the relative standalone selling price. The Company developed a best estimate of the standalone selling price for the Rights to Future Know-How Performance Obligation primarily based on the likelihood that additional intellectual property covered by the license conveyed will be developed during the term of the arrangement. The Company did not develop a best estimate of standalone selling price for the License, Research and Clinical Supply Performance Obligation because the estimate of standalone selling price associated with the Rights to Future Know-How Performance Obligation was determined to be immaterial. The Company has concluded that a change in the key assumptions used to determine the best estimate of standalone selling price for each performance obligation would not have a significant impact on the allocation of arrangement consideration. The deliverables associated with the License, Research and Clinical Supply Performance Obligation were satisfied as of June 30, 2018.

The transaction price at inception was comprised of: (i) the up-front payment, (ii) the estimated cost for the Phase 2 studies, (iii) a non-substantive milestone associated with the first patient enrolled in the NDD-CKD Phase 3 study, and (iv) the cost of all clinical supply provided to MTPC for the Phase 3 studies. No other development and no regulatory milestones were included in the transaction price at inception, as all other milestone amounts were fully constrained. As part of its evaluation of the constraint, the Company considered numerous factors, including that receipt of the milestones is outside the control of the Company and contingent upon success in future clinical trials and the licensee’s efforts. The total aggregate amount of development milestones is $10.0 million and the total aggregate amount of the regulatory milestones is up to $40.0 million. The total aggregate amount of sales milestones is up to $175.0 million. Any consideration related to sales-based milestones (including royalties) will be recognized when the related sales occur as they were determined to relate predominantly to the license granted to MTPC and therefore have also been excluded from the transaction price.  The Company re-evaluates the transaction price in each reporting period and as uncertain events are resolved or other changes in circumstances occur.

As of June 30, 2020, the transaction price is comprised of: (i) the up-front payment of $20.0 million, (ii) the cost for the Phase 2 studies of $20.5 million, (iii) the cost of all clinical supply provided to MTPC for the Phase 3 studies, (iv) $10.0 million in development milestones received, comprised of a $6.0 million and a $4.0 million development milestone, (v) the $10.0 million regulatory milestone relating to the JNDA filing, and (vi) the $15.0 million regulatory milestone relating to regulatory approval of vadadustat in Japan. As of June 30, 2020, all development milestones, a $10.0 million regulatory milestone related to the filing of the JNDA and a $15.0 million regulatory milestone relating to regulatory approval of vadadustat in Japan have been achieved. No other regulatory milestones have been assessed as probable of being achieved and as a result have been fully constrained. Revenue for the License, Research and Clinical Supply Performance Obligation for the MTPC Agreement is being recognized using a proportional performance method, for which all deliverables have been completed. Accordingly, the Company recognized the $15.0 million regulatory milestone relating to regulatory approval of vadadustat in Japan as revenue during the three and six months ended June 30, 2020, as the regulatory milestone was both deemed probable of being achieved and the required performance obligations had been satisfied as of June 30, 2020. The payment for this $15.0 million regulatory milestone was received in the third quarter of 2020. The Company recognized the $10.0 million regulatory milestone for the filing of the JNDA as revenue during the three and six months ended June 30, 2019, as the regulatory milestone was both deemed probable of being achieved and the required performance obligations had been satisfied as of June 30, 2019. As of

June 30, 2020, there is no deferred revenue, $15.0 million in accounts receivable, and no contract assets. There were no asset or liability balances classified as long-term in the unaudited condensed consolidated balance sheet as of June 30, 2020.

Supply of Validation Drug Product

In March 2020, in connection with the MTPC Agreement, the Company agreed to supply MTPC with certain vadadustat drug product for commercial use and MTPC agreed to reimburse the Company for certain manufacturing-related expenses. In connection with this arrangement, the Company invoiced the upfront payment of $10.4 million, which it received during the three months ended June 30, 2020. The Company does not recognize revenue under this arrangement until risk of loss passes to MTPC and delivery has occurred. During the three and six months ended June 30, 2020, the Company recognized $4.0 million in revenue for drug product that was delivered during the three months ended June 30, 2020. As of June 30, 2020, the Company recorded no accounts receivable, no deferred revenue, and $6.4 million in other current liabilities for drug product that is subject to return by MTPC.

U.S. Collaboration and License Agreement with Otsuka Pharmaceutical Co. Ltd.

Summary of Agreement

On December 18, 2016, the Company entered into a collaboration and license agreement with Otsuka, or the Otsuka U.S. Agreement. The collaboration is focused on the development and commercialization of vadadustat in the United States. Under the terms of the Otsuka U.S. Agreement, the Company is responsible for leading the development of vadadustat, including the ongoing Phase 3 development program, and the Company controls and retains final decision making authority with respect to certain matters including U.S. pricing strategy and manufacturing. The Company and Otsuka will co-commercialize vadadustat in the United States, subject to the approval of vadadustat by the FDA.

Under the terms of the Otsuka U.S. Agreement, the Company granted to Otsuka a co-exclusive, non-sublicensable license under certain intellectual property controlled by the Company solely to perform medical affairs activities and to conduct non-promotional and commercialization activities related to vadadustat in accordance with the associated plans. The co-exclusive license relates to activities that will be jointly conducted by the Company and Otsuka pursuant to the terms of the Otsuka U.S. Agreement. Additionally, the parties agreed not to promote, market or sell any competing product in the territory covered by the agreement.

The Company is responsible for performing all activities related to the development of vadadustat as outlined in the current global development plan, while Otsuka may agree to perform certain activities under the global development plan from time to time as agreed by the parties. The current global development plan encompasses all activities with respect to the ongoing PRO₂TECT and INNO₂VATE clinical programs through the filing for marketing approval, as well as certain other studies. The Company’s obligations related to the conduct of the current global development plan include the associated manufacturing and supply services for vadadustat.  

Under the Otsuka U.S. Agreement, the parties jointly conduct, and have equal responsibility for, all medical affairs, commercialization and non-promotional activities pursuant to underlying plans as agreed to by the parties. If approved by the FDA, Otsuka will purchase all of its supply requirements of vadadustat for commercial use from the Company pursuant to a separate supply agreement to be negotiated.

The activities under the Otsuka U.S. Agreement are governed by a joint steering committee, or JSC, formed by an equal number of representatives from the Company and Otsuka. The JSC coordinates and monitors the parties’ activities under the collaboration. Among other responsibilities, the JSC manages the overall strategic alignment between the parties, oversees the current global development plan and reviews other detailed plans setting forth the parties’ activities under the arrangement, including the medical affairs plan and commercialization and non-promotional activities plan. Additionally, the parties established a joint development committee, or JDC, which is comprised of an equal number of representatives from the Company and Otsuka. Among other responsibilities, the JDC shares information related to, and reviews and discusses activities and progress under, the current global development plan and any other development that may be conducted pursuant to the collaboration. The Company and Otsuka also established a joint manufacturing committee, or JMC, which is comprised of an equal number of representatives from each of the parties. Among other responsibilities, the JMC oversees the manufacturing plan and related manufacturing activities. In support of the potential commercialization of vadadustat, the parties established a joint commercialization committee, or JCC, which is comprised of an equal number of representatives from the Company and Otsuka. Among other responsibilities, the JCC oversees the activities and progress under the commercialization and non-promotional activities plan and all other sales and marketing activities. The Company has retained final decision-making authority with respect to certain matters, including U.S. pricing strategy and certain other key commercialization matters.

Under the terms of the Otsuka U.S. Agreement, the Company received a $125.0 million up-front, non-refundable, non-creditable cash payment in December 2016. In March 2017, the Company received a payment of approximately $33.8 million, which represented reimbursement for Otsuka’s share of costs previously incurred by the Company in implementing the current global development plan through December 31, 2016. Commencing in the third quarter of 2017, whereupon the Company had incurred a specified amount of incremental costs, Otsuka began to contribute, as required by the Otsuka U.S. Agreement, a percentage of the remaining costs incurred under the current global development plan. The Company estimates that Otsuka’s funding of the current global development plan costs subsequent to December 31, 2016 will total $290.6 million or more, depending on the actual costs incurred toward the current global development plan. The costs associated with the performance of any development activities in addition to those outlined in the current global development plan will be subject to a cost sharing or reimbursement mechanism as set forth in the Otsuka U.S. Agreement or to be determined by the parties. Costs incurred with respect to medical affairs and commercialization and non-promotional activities will generally be shared equally by the parties. In addition, due to the costs incurred in completing the activities under the current global development plan exceeding a certain threshold in the second quarter of 2019, the Company elected to require Otsuka to increase the aggregate percentage of current global development costs it funds under the Otsuka U.S. Agreement and the Otsuka International Agreement, as defined below, from 52.5% to 80%, or the Otsuka Funding Option. The Company estimates the additional funding as a result of exercising the Otsuka Funding Option, or the Additional Funding, to total approximately $106.4 million or more, depending on the actual costs incurred toward the current global development plan. The Additional Funding is fully creditable against future payments due to the Company under the arrangement, provided that future payments due to the Company may not be reduced by more than 50% in any calendar year and any remaining creditable amount above 50% in any calendar year will be applied to subsequent future payments until fully credited. As of June 30, 2020, the Additional Funding was $71.5 million.

In addition, Otsuka is required to make certain milestone payments to the Company upon the achievement of specified development, regulatory and commercial events. More specifically, as of June 30, 2020, the Company is eligible to receive up to $105.0 million in development milestone payments, up to $65.0 million in regulatory milestone payments for the first product to achieve the associated event, and up to $575.0 million in commercial milestone payments associated with aggregate sales of licensed products. These future milestones are subject to reduction as a result of the Company’s exercise of the Otsuka Funding Option, as described above. Due to the uncertainty of drug development and commercialization and the high historical failure rates associated therewith, no milestone payments may ever be received from Otsuka.

Under the Otsuka U.S. Agreement, the Company and Otsuka share the costs of developing and commercializing vadadustat in the United States and the profits from the sales of vadadustat after approval by the FDA. In connection with the profit share calculation, net sales include gross sales to third-party customers net of discounts, rebates, chargebacks, taxes, freight and insurance charges and other applicable deductions. Shared costs generally include costs attributable or reasonably allocable to the manufacture of vadadustat for commercialization purposes and the performance of medical affairs activities, non-promotional activities and commercialization activities.

Unless earlier terminated, the Otsuka U.S. Agreement will expire in the United States on a product-by-product basis on the date that one or more generic versions of vadadustat first achieves 90% market penetration. Either party may terminate the Otsuka U.S. Agreement in its entirety upon an uncured breach or insolvency on the part of the other party. Otsuka may terminate the Otsuka U.S. Agreement in its entirety upon 12 months’ prior written notice at any time after the release of the first top-line data from the global Phase 3 development program for vadadustat, which occurred in the second quarter of 2020 with the release of the top-line data from the INNO₂VATE program. In the event of termination of the Otsuka U.S. Agreement, all rights and licenses granted to Otsuka under the Otsuka U.S. Agreement will automatically terminate and the licenses granted to the Company will become freely sublicensable. In addition, the upfront payment, all development costs and milestone payments received by the Company prior to such termination will not be refunded to Otsuka.

Revenue Recognition

The Company evaluated the elements of the Otsuka U.S. Agreement in accordance with the provisions of ASC 606 and concluded that the contract counterparty, Otsuka, is a customer. The Company’s arrangement with Otsuka contains the following material promises under the contract at inception: (i) license under certain of the Company’s intellectual property to develop, perform medical affairs activities with respect to and conduct non-promotional and commercialization activities related to vadadustat and products containing or comprising vadadustat (the License Deliverable), (ii) development services to be performed pursuant to the current global development plan (the Development Services Deliverable), (iii) rights to future intellectual property (the Future IP Deliverable), and (iv) joint committee services (the Committee Deliverable).

The Company has identified three performance obligations in connection with its obligations under the Otsuka U.S. Agreement. Factors considered in making the assessment of which material promises will be accounted for as separate performance

obligations included, among other things, the capabilities of the collaboration partner, whether any other vendor sells the item separately, whether the good or service is highly interdependent or highly interrelated to the other elements in the arrangement, and whether there are other vendors that can provide the items. Additionally, the Otsuka U.S. Agreement does not include a general right of return. The three performance obligations identified in connection with the Company’s obligations under the Otsuka U.S. Agreement are as follows:

(i)License and Development Services Combined (License Performance Obligation)

The License Deliverable is not distinct from the Development Services Deliverable, due to the limitations inherent in the license conveyed. More specifically, the license conveyed to Otsuka does not provide Otsuka with the right to manufacture vadadustat and products containing or comprising vadadustat. However, the manufacturing and supply services that are conducted as part of the services to be performed pursuant to the current global development plan are necessary for Otsuka to fully exploit the associated license for its intended purpose. The value of the rights provided through the license conveyed will be realized when the underlying products covered by the intellectual property progress through the development cycle, receive regulatory approval and are commercialized. Products containing or comprising vadadustat cannot be commercialized until the development services under the current global development plan are completed. Accordingly, Otsuka must obtain the manufacturing and supply of the associated products that are included within the development services to be performed pursuant to the current global development plan from the Company in order to derive benefit from the license, which significantly limits the ability for Otsuka to utilize the License Deliverable for its intended purpose in a way that generates economic benefits.

(ii)Rights to Future Intellectual Property (Future IP Performance Obligation)

The License and Development Services deliverables combined are distinct from the Future IP Deliverable because Otsuka can obtain the value of the license using the clinical trial materials implicit in the development services without the receipt of any other intellectual property that may be discovered or developed in the future. The Future IP Deliverable is distinct from the Committee Deliverable because the joint committee services have no bearing on the value to be derived from the rights to potential future intellectual property. As a result, the Future IP Deliverable qualifies as a separate performance obligation.

(iii)Joint Committee Services (Committee Performance Obligation)

The License and Development Services deliverables combined are distinct from the Committee Deliverable because Otsuka can obtain the value of the license using the clinical trial materials implicit in the development services without the joint committee services. The Committee Deliverable also is distinct from the rights to Future IP Deliverable because the joint committee services have no bearing on the value to be derived from the rights to potential future intellectual property. As a result, the Committee Deliverable qualifies as a separate performance obligation.

The Company allocates the transaction price to each performance obligation based on the Company’s best estimate of the relative standalone selling price. The Company developed a best estimate of standalone selling price for the Committee Performance Obligation after considering the nature of the services to be performed and estimates of the associated effort and rates applicable to such services that would be expected to be realized under similar contracts. The Company developed a best estimate of standalone selling price for the Future IP Performance Obligation primarily based on the likelihood that additional intellectual property covered by the license conveyed will be developed during the term of the arrangement. The Company did not develop a best estimate of standalone selling price for the License Performance Obligation due to the following: (i) the best estimates of standalone selling price associated with the Future IP Performance Obligation was determined to be immaterial and (ii) the period of performance and pattern of recognition for the License Performance Obligation and the Committee Performance Obligation was determined to be similar. The Company has concluded that a change in the key assumptions used to determine the best estimate of standalone selling price for each performance obligation would not have a significant impact on the allocation of arrangement consideration.

The transaction price at inception was comprised of: (i) the up-front payment, (ii) the cost share payment with respect to amounts incurred by the Company through December 31, 2016, and (iii) an estimate of the cost share payments to be received with respect to amounts incurred by the Company subsequent to December 31, 2016. No development or regulatory milestones were included in the transaction price at inception, as all milestone amounts were fully constrained. As part of its evaluation of the constraint, the Company considered numerous factors, including that receipt of the milestones is outside the control of the Company and contingent upon success in future clinical trials and the licensee’s efforts. Any consideration related to sales-based milestones will be recognized when the related sales occur as they were determined to relate predominantly to the license granted to Otsuka and therefore have also been excluded from the transaction price. 

The Company re-evaluates the transaction price in each reporting period and as uncertain events are resolved or other changes in circumstances occur. The Company determined that under ASC 606, the contract was modified in the second quarter of 2019 when the Otsuka Funding Option became effective and the Company became eligible to receive the Additional Funding

amount. In connection with the modification, the Company adjusted the transaction price to include the Additional Funding amount as additional variable consideration. The Company constrains the variable consideration to an amount for which a significant revenue reversal is not probable. In the event that there is consideration received by a customer in the form of activities performed by such customer under the global development plan, such consideration is reflected as a reduction to the transaction price as contra revenue rather than as an expense because the associated services are not distinct from the License Performance Obligation.

No amounts were allocated to the Future IP Performance Obligation because the associated best estimate of standalone selling price was determined to be immaterial. Due to the similar performance period and recognition pattern between the License Performance Obligation and the Committee Performance Obligation, the transaction price has been allocated to the License Performance Obligation and the Committee Performance Obligation on a combined basis. Accordingly, the Company will recognize revenue related to the allocable arrangement consideration on a proportional performance basis as the underlying development services are performed pursuant to the current global development plan which is commensurate with the period and consistent with the pattern over which the Company’s obligations are satisfied for both the License Performance Obligation and the Committee Performance Obligation. Effectively, the Company has treated the arrangement as if the License Performance Obligation and the Committee Performance Obligation are a single performance obligation.

As of June 30, 2020, the transaction price totaling $449.4 million is comprised of: (i) the up-front payment of $125.0 million, (ii) the cost share payment with respect to amounts incurred by the Company through December 31, 2016 of $33.8 million, and (iii) the estimate of the net cost share consideration to be received of approximately $290.6 million with respect to amounts incurred by the Company subsequent to December 31, 2016 and the Additional Funding. As of June 30, 2020, no development or regulatory milestones have been assessed as probable of being reached and thus have been fully constrained.

During the three months ended June 30, 2020 and 2019, the Company recognized revenue totaling approximately $25.9 million and $37.5 million, respectively, and approximately $64.5 million and $63.7 million during the six months ended June 30, 2020 and 2019, respectively, with respect to the Otsuka U.S. Agreement. The revenue is classified as collaboration revenue in the accompanying unaudited condensed consolidated statements of operations. As of June 30, 2020, there is approximately $35.9 million of deferred revenue related to the Otsuka U.S. Agreement of which $15.4 million is classified as current and $20.6 million is classified as long-term in the accompanying unaudited condensed consolidated balance sheet based on the performance period of the underlying obligations. Additionally, as of June 30, 2020, there are approximately $3.9 million in contract liabilities (included in accounts payable) and $0.5 million in prepaid expenses and other current assets in the accompanying unaudited condensed consolidated balance sheet. As of December 31, 2019, there was $8.9 million in accounts receivable in the consolidated balance sheet.

The Company determined that the medical affairs, commercialization and non-promotional activities elements of the Otsuka U.S. Agreement represent joint operating activities in which both parties are active participants and of which both parties are exposed to significant risks and rewards that are dependent on the success of the activities. Accordingly, the Company is accounting for the joint medical affairs, commercialization and non-promotional activities in accordance with ASC No. 808, Collaborative Arrangements (ASC 808). Additionally, the Company has determined that in the context of the medical affairs, commercialization and non-promotional activities, Otsuka does not represent a customer as contemplated by ASC 606-10-15, Revenue from Contracts with Customers – Scope and Scope Exceptions. As a result, the activities conducted pursuant to the medical affairs, commercialization and non-promotional activities plans will be accounted for as a component of the related expense in the period incurred. During the three months ended June 30, 2020 and 2019, the Company incurred approximately $0.2 million and $0.3 million, respectively, of costs related to the cost-sharing provisions of the Otsuka U.S. Agreement of which approximately $0.1 million are reimbursable by Otsuka and recorded as a reduction to research and development expense during each of the three months ended June 30, 2020 and 2019. During the three months ended June 30, 2020 and 2019, Otsuka incurred approximately $0.4 million and $0.1 million of costs related to the cost-sharing provisions of the Otsuka U.S. Agreement, of which approximately $0.2 million and $0.1 million are reimbursable by the Company and recorded as an increase to research and development expense during the three months ended June 30, 2020 and 2019, respectively.

International Collaboration and License Agreement with Otsuka Pharmaceutical Co. Ltd.

Summary of Agreement

On April 25, 2017, the Company entered into a collaboration and license agreement with Otsuka, or the Otsuka International Agreement. The collaboration is focused on the development and commercialization of vadadustat in Europe, Russia, China, Canada, Australia, the Middle East and certain other territories, collectively, the Otsuka International Territory. Under the terms of the Otsuka International Agreement, the Company is responsible for leading the development of vadadustat, including the

ongoing global Phase 3 development program. Otsuka has the sole responsibility, at its own cost, for the commercialization of vadadustat in the Otsuka International Territory, subject to the approval by the relevant regulatory authorities.

Under the terms of the Otsuka International Agreement, the Company granted to Otsuka an exclusive, sublicensable license under certain intellectual property controlled by the Company to develop and commercialize vadadustat and products containing or comprising vadadustat in the Otsuka International Territory.

Pursuant to the terms of the Otsuka International Agreement, the Company is responsible for performing all activities related to the development of vadadustat as outlined in the current global development plan, while Otsuka may agree to perform certain activities under the global development plan from time to time as agreed by the parties. Under the Otsuka International Agreement, the Company controls and retains final decision-making authority with respect to certain matters. Per the terms of the Otsuka International Agreement, Otsuka is generally responsible for the conduct of any development activities that may be required for marketing approvals in the Otsuka International Territory or otherwise performed with respect to the Otsuka International Territory that are incremental to those included in the current global development plan. The Company’s obligations related to the conduct of the current global development plan include the associated manufacturing and supply services for vadadustat.

Under the Otsuka International Agreement, Otsuka is to be solely responsible for the conduct of all medical affairs and commercialization activities in the Otsuka International Territory pursuant to underlying plans as reviewed and discussed by the parties. If approved by the relevant jurisdictional regulatory health authorities in the Otsuka International Territory, the Company will provide vadadustat to Otsuka for commercialization pursuant to a separate supply agreement to be negotiated. Additionally, the parties agreed not to promote, market or sell any competing product in the territory covered by the agreement.

The activities under the Otsuka International Agreement are governed by a JSC formed by an equal number of representatives from the Company and Otsuka. The JSC coordinates and monitors the parties’ activities under the collaboration. Among other responsibilities, the JSC manages the overall strategic alignment between the parties, oversees the current global development plan and reviews other detailed plans setting forth any other development activities that may be conducted under the arrangement. Additionally, the parties established a JDC, which is comprised of an equal number of representatives from the Company and Otsuka. Among other responsibilities, the JDC shares information related to, and reviews and discusses activities and progress under, the current global development plan and any other development that may be conducted pursuant to the collaboration. The Company and Otsuka also established a JMC, which is comprised of an equal number of representatives from each of the parties. Among other responsibilities, the JMC oversees the manufacturing plan and related manufacturing activities. In support of the potential commercialization of vadadustat, the parties established a JCC, which is comprised of an equal number of representatives from the Company and Otsuka. Among other responsibilities, the JCC manages the activities and progress under the commercialization and non-promotional activities plan and all other sales and marketing activities. The Company has retained final decision-making authority with respect to certain matters. Otsuka has retained final decision-making authority with respect to all commercialization matters, other than decisions related to certain marketing matters.

Under the terms of the Otsuka International Agreement, the Company received a $73.0 million up-front, non-refundable, non-creditable cash payment. The Company also received a payment of approximately $0.2 million which represents reimbursement for Otsuka’s share of costs previously incurred by the Company in implementing the current global development plan in excess of a specified threshold during the quarter ended March 31, 2017. Commencing in the second quarter of 2017, Otsuka began to contribute, as required by the Otsuka International Agreement, a percentage of the remaining costs incurred under the current global development plan. The Company estimates that Otsuka’s funding of the current global development plan costs subsequent to March 31, 2017 will total roughly $214.3 million or more, depending on the actual current global development plan costs incurred. The costs associated with the performance of any mutually agreed upon development activities in addition to those outlined in the current global development plan will be subject to a cost sharing or reimbursement mechanism as set forth in the Otsuka International Agreement or to be determined by the parties. Otsuka may elect to conduct additional studies of vadadustat in the EU, subject to the Company’s right to delay such studies based on its objectives outside the Otsuka International Territory. Otsuka will pay a percentage of the costs of any such studies, and the Company will pay its portion of the costs in the form of a credit against future amounts due to the Company under the Otsuka International Agreement. The costs incurred related to any other development activities, which are pursued solely for obtaining or maintaining marketing approval in the Otsuka International Territory or otherwise performed solely with respect to the Otsuka International Territory that are incremental to the development activities included in the current global development plan, will be borne in their entirety by Otsuka. Otsuka will pay costs incurred with respect to medical affairs and commercialization activities in the Otsuka International Territory.

In addition, Otsuka would be required to make certain milestone payments to the Company upon the achievement of specified development, regulatory and commercial events. More specifically, as of June 30, 2020, the Company is eligible to receive up

to $65.0 million in development milestone payments and up to $52.0 million in regulatory milestone payments for the first licensed product to achieve the associated event. Moreover, the Company is eligible for up to $525.0 million in commercial milestone payments associated with aggregate sales of all licensed products. Additionally, to the extent vadadustat is commercialized, the Company would be entitled to receive tiered royalty payments ranging from the low double digits to the low thirties based on a percentage of net sales. Royalties are due on a country-by-country basis from the date of the first commercial sale of a licensed product in a country until the latest to occur of: (i) the expiration date in such country of the last to expire valid claim within the intellectual property covering the licensed product, (ii) the date of expiration of data or regulatory exclusivity in such country or (iii) the tenth anniversary of the first commercial sale of such licensed product in such country. Due to the uncertainty of pharmaceutical development and the high historical failure rates associated therewith, no milestone or royalty payments may ever be received from Otsuka. There are no cancellation, termination or refund provisions in the Otsuka International Agreement that contain material financial consequences to the Company.

Unless earlier terminated, the Otsuka International Agreement will expire upon the expiration of the royalty term in the last country in the Otsuka International Territory. Either party may terminate the Otsuka International Agreement in its entirety upon an uncured material breach or insolvency on the part of the other party. Otsuka may terminate the Otsuka International Agreement in its entirety or for a specific region in the Otsuka International Territory upon 12 months’ prior written notice at any time after the release of the first top-line data from the global Phase 3 development program for vadadustat. In the event of termination of the Otsuka International Agreement, all rights and licensees granted to Otsuka under the Otsuka International Agreement will automatically terminate, and the licenses granted to the Company will become freely sublicensable, but potentially subject to a future royalty. In addition, the upfront payment, all development costs and milestone payments received by the Company prior to such termination will not be eligible for refund to Otsuka.

Revenue Recognition

The Company has accounted for the Otsuka International Agreement separately from the collaboration arrangement with Otsuka with respect to the U.S. due to the lack of interrelationship and interdependence of the elements and payment terms within each of the contracts as they relate to the respective territories. Accordingly, the Company has applied the guidance in ASC 606 solely in reference to the terms and conditions of the Otsuka International Agreement, while the Otsuka U.S. Agreement has continued to be accounted for as a discrete agreement in its own right. The Company evaluated the Otsuka International Agreement in accordance with the provisions of ASC 606 and concluded that the contract counterparty, Otsuka, is a customer. The Company’s arrangement with Otsuka related to the Otsuka International Territory contains the following material promises under the contract at inception: (i) license under certain of the Company’s intellectual property to develop and commercialize (including the associated packaging) vadadustat and products containing or comprising vadadustat and development services to be performed pursuant to the current global development plan (the License and Development Services Deliverable), (ii) rights to future intellectual property (the Future IP Deliverable) and (iii) joint committee services (the Committee Deliverable).

The Company has identified three performance obligations in connection with its obligations under the Otsuka International Agreement. Factors considered in making this assessment of which material promises will be accounted for as a separate performance obligation included, among other things, the capabilities of the collaboration partner, whether any other vendor sells the item separately, whether the good or service is highly interdependent or highly interrelated to the other elements in the arrangement, and whether there are other vendors that can provide the items.  Additionally, the Otsuka International Agreement does not include a general right of return. The three performance obligations identified in connection with the Company’s obligations under the Otsuka International Agreement are as follows:  

(i)License and Development Services Combined (License Performance Obligation)

The Company has determined that the license granted to Otsuka pursuant to the Otsuka International Agreement will be accounted for as component of the development services as opposed to a separately identified promise. Although the rights granted under the license are effective throughout the entire term of the arrangement, the Company will not be providing significant additional contributions of study data, regulatory submissions and regulatory approvals beyond the point that services under the current global development plan are conducted. Therefore, the period and pattern of recognition would be the same for both the license and the development services. Consequently, the Company has concluded that the license will effectively be treated as an inherent part of the associated development services promise instead of as a separate promise. As a result, the License and Development Services Deliverable will be treated as a single performance obligation (the License Performance Obligation).  

(ii)Rights to Future Intellectual Property (Future IP Performance Obligation)

The License and Development Services Deliverable is distinct from the Future IP Deliverable because Otsuka can obtain the value of the license using the clinical trial materials implicit in the development services without the receipt of any other

intellectual property that may be discovered or developed in the future. The Future IP Deliverable is distinct from the Committee Deliverable because the Committee Deliverable has no bearing on the value to be derived from the rights to potential future intellectual property. As a result, the Future IP Deliverable qualifies as a separate performance obligation.

(iii)Joint Committee Services (Committee Performance Obligation)

The License and Development Services Deliverable is distinct from the Committee Deliverable because Otsuka can obtain the value of the license using the clinical trial materials implicit in the development service without the joint committee services. The Committee Deliverable is distinct from the Future IP Deliverable because the Committee Deliverable has no bearing on the value to be derived from the rights to potential future intellectual property. As a result, the Committee Deliverable qualifies as a separate performance obligation.

The Company allocates the transaction price to each performance obligation based on the Company’s best estimate of the relative standalone selling price. The Company developed a best estimate of standalone selling price for the Committee Performance Obligation after considering the nature of the services to be performed and estimates of the associated effort and rates applicable to such services that would be expected to be realized under similar contracts. The Company developed a best estimate of standalone selling price for the Future IP Performance Obligation primarily based on the likelihood that additional intellectual property covered by the license conveyed will be developed during the term of the arrangement. The Company did not develop a best estimate of standalone selling price for the License Performance Obligation due to the following: (i) the best estimates of standalone selling price associated with the Future IP Performance Obligation was determined to be immaterial and (ii) the period of performance and pattern of recognition for the License Performance Obligation and the Committee Performance Obligation was determined to be similar. The Company has concluded that a change in the key assumptions used to determine the best estimate of standalone selling price for each performance obligation would not have a significant impact on the allocation of arrangement consideration.

The transaction price at inception was comprised of: (i) the up-front payment, (ii) the cost share payment with respect to amounts incurred by the Company during the quarter ended March 31, 2017, and (iii) an estimate of the cost share payments to be received with respect to amounts incurred by the Company subsequent to March 31, 2017. No development or regulatory milestones were included in the transaction price at inception, as all milestone amounts were fully constrained. As part of its evaluation of the constraint, the Company considered numerous factors, including whether the receipt of the milestone payment is outside the control of the Company and contingent upon success in future clinical trials and the licensee’s efforts. Any consideration related to sales-based milestones (including royalties) will be recognized when the related sales occur as they were determined to relate predominantly to the license granted to Otsuka and therefore have also been excluded from the transaction price.

The Company re-evaluates the transaction price in each reporting period and as uncertain events are resolved or other changes in circumstances occur. In the event that there is consideration received by a customer in the form of activities performed by such customer under the global development plan, such consideration is reflected as a reduction to the transaction price as contra revenue rather than as an expense because the associated services are not distinct from the License Performance Obligation.

No amounts were allocated to the Future IP Performance Obligation because the associated best estimate of standalone selling price was determined to be immaterial. Due to the similar performance period and recognition pattern between the License Performance Obligation and the Committee Performance Obligation, the transaction price has been allocated to the License Performance Obligation and the Committee Performance Obligation on a combined basis. Accordingly, the Company will recognize revenue related to the allocable arrangement consideration on a proportional performance basis as the underlying development services are performed pursuant to the current global development plan which is commensurate with the period and consistent with the pattern over which the Company’s obligations are satisfied for both the License Performance Obligation and the Committee Performance Obligation. Effectively, the Company has treated the arrangement as if the License Performance Obligation and the Committee Performance Obligation are a single performance obligation.

As of June 30, 2020, the transaction price totaling $287.5 million is comprised of: (i) the up-front payment of $73.0 million, (ii) the cost share payment with respect to amounts incurred by the Company during the quarter ended March 31, 2017 of $0.2 million, and (iii) an estimate of the net cost share consideration to be received with respect to amounts incurred by the Company subsequent to March 31, 2017 of $214.3 million. As of June 30, 2020, no development or regulatory milestones have been assessed as probable of being reached and thus have been fully constrained.

During the three months ended June 30, 2020 and 2019, the Company recognized revenue totaling approximately $12.8 million and $22.5 million, respectively, and approximately $32.2 million and $44.4 million during the six months ended June 30, 2020 and 2019, respectively, with respect to the Otsuka International Agreement. The revenue is classified as collaboration revenue

in the accompanying unaudited condensed consolidated statements of operations. As of June 30, 2020, there is approximately $17.5 million of deferred revenue related to the Otsuka International Agreement of which $8.2 million is classified as current and $9.3 million is classified as long-term in the accompanying unaudited condensed consolidated balance sheet based on the performance period of the underlying obligations. Additionally, as of June 30, 2020, there are approximately $1.8 million in contract liabilities (included in accounts payable) and $0.2 million in prepaid expenses and other current assets in the accompanying unaudited condensed consolidated balance sheet. As of December 31, 2019, there was $4.0 million in accounts receivable in the consolidated balance sheet.

Janssen Pharmaceutica NV Research and License Agreement

Summary of Agreement

On February 9, 2017, the Company entered into a Research and License Agreement, the Janssen Agreement, with Janssen Pharmaceutica NV, or Janssen, a subsidiary of Johnson & Johnson, pursuant to which Janssen granted the Company an exclusive license under certain intellectual property rights to develop and commercialize worldwide certain HIF prolyl hydroxylase targeted compounds.

Under the terms of the Janssen Agreement, Janssen granted to the Company a license for a three-year research term to conduct research on the HIF compound portfolio, which research term is now expired. During the research term, the Company could designate one or more compounds as candidates for development and commercialization. Once a compound was designated for development and commercialization, the Company was to be solely responsible for the development and commercialization of the compound worldwide at its own cost and expense.

Under the terms of the Janssen Agreement, the Company made an upfront payment of $1.0 million in cash to Janssen and issued a warrant to purchase 509,611 shares of the Company’s common stock. In addition, Janssen could be eligible to receive up to an aggregate of $16.5 million from the Company in specified development milestone payments on a product-by-product basis. Janssen will also be eligible to receive up to $215.0 million from the Company in specified commercial milestones as well as tiered, escalating royalties ranging from a low- to mid-single digit percentage of net sales, on a product-by-product basis, and subject to reduction upon expiration of patent rights or the launch of a generic product in the territory.

Unless earlier terminated, the Janssen Agreement will expire on a product-by-product and country-by-country basis upon the expiration of the last royalty term, which ends upon the longer of the expiration of the patents licensed under the Janssen Agreement, the expiration of regulatory exclusivity for such product, or 10 years from first commercial sale of such product. The Company may terminate the Janssen Agreement in its entirety or only with respect to a particular licensed compound or product upon 180 days’ prior written notice to Janssen. The parties also have customary termination rights, subject to a cure period, in the event of the other party’s material breach of the Janssen Agreement or in the event of certain additional circumstances.

As discussed above, the Company issued a Common Stock Purchase Warrant, or the Warrant, to Johnson & Johnson Innovation – JJDC, Inc., or JJDC, an affiliate of Janssen, for 509,611 shares of the Company’s common stock at an exercise price of $9.81 per share. The Warrant is exercisable by JJDC, in whole or in part, at any time prior to February 9, 2022. The Warrant and the shares issuable upon exercise of the Warrant will be sold and issued without registration under the Securities Act of 1933, as amended, or the Securities Act. The Company recorded the fair value of the Warrant in the amount of $3.4 million to additional paid-in capital and research and development expense in March 2017.

Vifor Pharma License Agreement

Summary of Agreement

On May 12, 2017, the Company entered into a License Agreement, or the Vifor Agreement, with Vifor (International) Ltd., or Vifor Pharma, pursuant to which the Company granted Vifor Pharma an exclusive license to sell vadadustat solely to Fresenius Kidney Care Group LLC, or FKC, an affiliate of Fresenius Medical Care North America, or FMCNA, in the United States. On April 8, 2019, the Company and Vifor Pharma entered into an Amended and Restated License Agreement, or the Vifor Amended Agreement, which amended and restated in full the Vifor Agreement.

Pursuant to the Vifor Amended Agreement, the Company granted Vifor Pharma an exclusive license to sell vadadustat to FKC and to certain third party dialysis organizations approved by the Company, or Third Party Dialysis Organizations, in the United States.

The license granted under the Vifor Amended Agreement will become effective upon (i) the approval of vadadustat for DD-CKD patients by the FDA, (ii) the earlier of a determination by the Centers for Medicare & Medicaid Services, or CMS, that vadadustat will be reimbursed using Medicare’s bundled reimbursement model or that vadadustat will be reimbursed using the Transitional Drug Add-On Payment Adjustment, and (iii) payment by Vifor Pharma of a $25.0 million milestone upon the occurrence of (i) and (ii).

The Vifor Amended Agreement is structured as a profit share arrangement between the Company and Vifor Pharma in which the Company will receive a majority of the profit, after deduction of certain amounts relating to Vifor Pharma’s costs, from Vifor Pharma’s sales of vadadustat to FKC and the Third Party Dialysis Organizations in the United States. The Company will share the milestone payment and the revenue from the profit share with Otsuka pursuant to the Otsuka U.S. Agreement. The Company currently retains rights to commercialize vadadustat for use in the NDD-CKD market and in other dialysis organizations in the United States, which will be done in collaboration with Otsuka following FDA approval.

The Vifor Amended Agreement provides that the Company and Vifor Pharma will enter into a commercial supply agreement for vadadustat pursuant to which the Company will supply all of Vifor Pharma’s requirements for vadadustat in the United States. In addition, Vifor Pharma will enter into supply arrangements with FKC and the Third Party Dialysis Organizations that will govern the terms pursuant to which Vifor Pharma will supply vadadustat to FKC and the Third Party Dialysis Organizations for use in patients at its dialysis centers in the United States. During the term of the Vifor Amended Agreement, Vifor Pharma is not permitted to sell any HIF product that competes with vadadustat in the United States to FKC or its affiliates or to any Third Party Dialysis Organization, and the Company may not directly supply vadadustat to FKC or any other affiliate of FMCNA or any Third Party Dialysis Organization.

Unless earlier terminated, the Vifor Amended Agreement will expire upon the later of the expiration of all patents that claim or cover vadadustat or expiration of marketing or regulatory exclusivity for vadadustat in the United States. Vifor Pharma may terminate the Vifor Amended Agreement in its entirety upon 12 months’ prior written notice after the release of the first top-line data in the vadadustat global Phase 3 program for DD-CKD patients. In addition, either party may, subject to a cure period, terminate the Vifor Amended Agreement in the event of the other party’s uncured material breach or bankruptcy. The Company may terminate the Vifor Amended Agreement (or suspend the license) upon the occurrence of certain events, such as for specific violations of the Vifor Amended Agreement, Vifor Pharma’s failure to achieve certain sales levels, or if there are changes in Vifor Pharma’s relationship with FKC or in applicable laws and regulations related to the reimbursement of drugs like vadadustat at dialysis clinics, or if Vifor Pharma contests the validity or enforceability of any patent controlled by the Company that covers vadadustat. The Vifor Amended Agreement also includes a standstill provision and customary representations and warranties.

Investment Agreement

In connection with the Vifor Agreement, in May 2017, the Company and Vifor Pharma entered into an investment agreement, or the Investment Agreement, pursuant to which the Company sold an aggregate of 3,571,429 shares of the Company’s common stock, or the Shares, to Vifor Pharma at a price per share of $14.00 for a total of $50.0 million. The amount representing the premium over the closing stock price of $12.69 on the date of the transaction, totaling $4.7 million, was determined by the Company to represent consideration related to the Vifor Agreement. As the parties’ rights under the Vifor Agreement are conditioned upon (a) the approval of vadadustat for DD-CKD patients by the FDA; (b) the earlier of a determination by CMS that vadadustat will be reimbursed using Medicare’s bundled reimbursement model or that vadadustat will be reimbursed using the Transitional Drug Add-On Payment Adjustment; and (c) payment by Vifor Pharma of a $25.0 million milestone upon the occurrence of (a) and (b), in accordance with ASC 606, the Company has determined that the full transaction price is fully constrained. As part of its evaluation of the constraint, the Company considered numerous factors, including clinical and regulatory risks that must be overcome in order for the parties’ rights to become effective and the probability of the $25.0 million milestone being achieved. Accordingly, the $4.7 million continues to be recorded as deferred revenue in the accompanying unaudited condensed consolidated balance sheets. Upon the satisfaction of the aforementioned conditions, revenue will be recognized as the Company supplies vadadustat to Vifor Pharma using a proportional performance method.

Vifor Pharma agreed to a lock-up restriction such that it agreed not to sell the Shares for a period of time following the effective date of the Investment Agreement as well as a customary standstill agreement. In addition, the Investment Agreement contains voting agreements made by Vifor Pharma with respect to the Shares. The Shares have not been registered pursuant to the Securities Act, and were issued and sold in reliance upon the exemption from registration contained in Section 4(a)(2) of the Securities Act and Rule 506 promulgated thereunder.

Priority Review Voucher Letter Agreement

On February 14, 2020, the Company entered into a letter agreement, or the Letter Agreement, with Vifor Pharma relating to Vifor Pharma’s agreement with a third party to purchase a Priority Review Voucher, or the PRV, issued by the FDA, subject to satisfaction of customary closing conditions, or the PRV Purchase. A PRV entitles the holder to priority review of a New Drug Application, or NDA, or a Biologics License Application for a new drug, which reduces the target FDA review time to six months after official acceptance of the submission, and could lead to expedited approval. Pursuant to the Letter Agreement, Akebia paid Vifor Pharma $10.0 million in connection with the closing of the PRV Purchase. Vifor Pharma is obligated to retain all rights to, and maintain the validity of, the PRV until Akebia and Vifor Pharma (a) enter into a definitive agreement setting forth the financial and other terms by which Vifor Pharma will assign the PRV to Akebia for use with Akebia’s planned NDA for vadadustat for the treatment of anemia due to CKD in both dialysis-dependent and non-dialysis dependent patients, or (b) make a mutual decision to sell the PRV and share the proceeds based on certain terms.

During the quarter ended March 31, 2020, the $10.0 million payment to Vifor Pharma was recorded to research and development expense in the unaudited condensed consolidated statement of operations and as an operating cash outflow in the unaudited condensed consolidated statement of cash flows.

License Agreement with Panion & BF Biotech, Inc.

As a result of the Merger, the Company had a license agreement, which was amended from time to time, with Panion & BF Biotech, Inc., or Panion, under which Keryx, the Company’s wholly owned subsidiary, was the contracting party, or the Panion License Agreement, pursuant to which Keryx in-licensed the exclusive worldwide rights, excluding certain Asian-Pacific countries, or the Licensor Territory, for the development and commercialization of ferric citrate.

On April 17, 2019, the Company and Panion entered into a second amended and restated license agreement, or the Panion Amended License Agreement, which amends and restates in full the Panion License Agreement, effective as of April 17, 2019. The Panion Amended License Agreement provides Keryx with an exclusive license under Panion-owned know-how and patents covering the rights to sublicense, develop, make, use, sell, offer for sale, import and export ferric citrate worldwide, excluding the Licensor Territory. The Panion Amended License Agreement also provides Panion with an exclusive license under Keryx-owned patents covering the rights to sublicense (with the Company’s written consent), develop, make, use, sell, offer for sale, import and export ferric citrate in certain countries in the Licensor Territory. Consistent with the Panion License Agreement, under the Panion Amended License Agreement, Panion is eligible to receive from the Company or any sublicensee royalty payments based on a mid-single digit percentage of sales of ferric citrate in the Company’s licensed territories. The Company is eligible to receive from Panion or any sublicensee royalty payments based on a mid-single digit percentage of net sales of ferric citrate in Panion’s licensed territories.

The Panion Amended License Agreement terminates upon the expiration of each of the Company’s and Panion’s obligations to pay royalties thereunder. In addition, the Company may terminate the Panion Amended License Agreement (i) in its entirety or (ii) with respect to one or more countries in the Company’s licensed territory, in either case upon 90 days’ notice. The Company and Panion also each have the right to terminate the Panion Amended License Agreement upon the occurrence of a material breach of the Panion Amended License Agreement by the other party, subject to certain cure provisions, or certain insolvency events. The Panion Amended License Agreement also provides that, on a country-by-country basis, until the second anniversary of the expiration of the obligation of the Company or Panion, as applicable, to pay royalties in a country in which such party has ferric citrate for sale on the date of such expiration, neither the other party nor its affiliates will, directly or indirectly, sell, distribute or otherwise commercialize or supply or cause to supply ferric citrate to a third party for sale or distribution in such country.

The Panion Amended License Agreement includes customary terms relating to, among others, indemnification, confidentiality, remedies, and representations and warranties. In addition, the Panion Amended License Agreement provides that each of the Company and Panion has the right, but not the obligation, to conduct litigation against any infringer of certain patent rights under the Panion Amended License Agreement in certain territories.

The Company recognized royalty payments due to Panion of approximately $2.8 million and $2.6 million during the three months ended June 30, 2020 and 2019, respectively, and approximately $5.3 million and $4.7 million during the six months ended June 30, 2020 and 2019, respectively, relating to the Company’s sales of Auryxia in the United States and JT and Torii’s net sales of Riona in Japan, as the Company is required to pay a mid-single digit percentage of net sales of ferric citrate in the Company’s licensed territories to Panion under the terms of the Panion Amended License Agreement.

Sublicense Agreement with Japan Tobacco, Inc. and its subsidiary, Torii Pharmaceutical Co., Ltd.

Summary of Agreement

As a result of the Merger, the Company has an Amended and Restated Sublicense Agreement, which was amended in June 2013, with JT and Torii, or the JT and Torii Sublicense Agreement, under which Keryx, the Company’s wholly owned subsidiary, remains the contracting party. Under the JT and Torii Sublicense Agreement, JT and Torii obtained the exclusive sublicense rights for the development and commercialization of ferric citrate hydrate in Japan. JT and Torii are responsible for the future development and commercialization costs in Japan.

Ferric citrate hydrate is currently approved by the Japanese Ministry of Health, Labour and Welfare for manufacturing and marketing in Japan for the treatment of hyperphosphatemia in patients with CKD. Ferric citrate hydrate is being marketed in Japan by Torii, under the brand name Riona. During the three months ended June 30, 2020, JT and Torii announced the filing of a supplemental NDA with the Pharmaceuticals and Medical Devices Agency seeking an additional indication for Riona to treat adult patients with IDA in Japan. The Company is eligible to receive royalty payments based on a tiered double-digit percentage of net sales of Riona in Japan escalating up to the mid-teens, subject to certain reductions upon expiration or termination of the Amended and Restated License Agreement between Keryx and Panion, by which Keryx in-licensed the exclusive worldwide rights, excluding certain Asian-Pacific countries, for the development and commercialization of ferric citrate. The Company is entitled to receive up to an additional $55.0 million upon the achievement of certain annual net sales milestones.

The sublicense under the JT and Torii Sublicense Agreement terminates upon the expiration of all underlying patent rights. Also, JT and Torii may terminate the JT and Torii Sublicense Agreement with or without cause upon at least six months prior written notice to us. Additionally, either party may terminate the JT and Torii Sublicense Agreement for cause upon 60 days’ prior written notice after the breach of any uncured material provision of the JT and Torii Sublicense Agreement, or after certain insolvency events.

Revenue Recognition

The Company evaluated the elements of the JT and Torii Sublicense Agreement in accordance with the provisions of ASC 606 and concluded that the contract counterparty, JT and Torii, is a customer. The Company’s arrangement with JT and Torii contains the following material promises under the contract at inception: (i) exclusive license to develop and commercialize ferric citrate hydrate in Japan (the License Deliverable), (ii) supply of ferric citrate hydrate until JT and Torii could secure their own source (the Supply Deliverable), (iii) knowledge transfer, and (iv) rights to future know-how.

The Company identified two performance obligations in connection with its obligations under the JT and Torii Sublicense Agreement: (i) License and Supply Performance Obligation and (ii) Rights to Future Know-How Performance Obligation. The Company allocated the transaction price to each performance obligation based on the Company’s best estimate of the relative standalone selling price. The Company developed a best estimate of the standalone selling price for the Rights to Future Know-How Performance Obligation primarily based on the likelihood that additional intellectual property covered by the license conveyed will be developed during the term of the arrangement and determined it immaterial. As such, the Company did not develop a best estimate of standalone selling price for the License and Supply Performance Obligation and allocated the entire transaction price to this performance obligation. Additionally, as of the consummation of the Merger, the services associated with the License and Supply Performance Obligation were completed and JT and Torii had secured their own source to manufacture ferric citrate hydrate. As such, any initial license fees as well as any development-based milestones and manufacturing fee revenue were received and recognized prior to the Merger. The Company determined that the remaining consideration that may be payable to the Company under the terms of the sublicense agreement are either quarterly royalties on net sales or payments due upon the achievement of sales-based milestones. In accordance with ASC 606, the Company recognizes sales-based royalties, including milestone payments based on the level of sales, when the related sales occur as these amounts have been determined to relate predominantly to the license granted to JT and Torii and therefore are recognized at the later of when the performance obligation is satisfied, or the related sales occur.

The Company recognized license revenue of $1.7 million and $1.5 million during the three months ended June 30, 2020 and 2019, respectively, and $2.9 million and $2.7 million during the six months ended June 30, 2020 and 2019, respectively, related to royalties earned on net sales of Riona in Japan. The Company records the associated mid-single digit percentage of net sales royalty expense due to Panion, the licensor of Riona, in the same period as the royalty revenue from JT and Torii is recorded.

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Business Combination

6 Months Ended

Jun. 30, 2020

Business Combinations [Abstract]

Business Combination

Business Combination

On December 12, 2018, the Company completed the Merger with Keryx. Keryx’s proprietary product, Auryxia, is approved by the FDA for two indications: (1) the control of serum phosphorus levels in adult patients with DD-CKD, or the Hyperphosphatemia Indication and (2) the treatment of iron deficiency anemia in adult patients with NDD-CKD, or the IDA Indication.    

Pursuant to the terms and conditions of the Merger Agreement, each outstanding Keryx Share, excluding the Baupost Additional Shares, as defined below, and each outstanding Keryx equity award were converted into Akebia Shares and substantially similar Akebia equity awards, respectively, at an exchange ratio of 0.37433 for a total fair value consideration of $527.8 million consisting of the following (in thousands):

Fair value of 57,773,090 Akebia Shares	$	516,492
Fair value of 602,752 Akebia RSUs	304
Fair value of 3,967,290 Akebia stock options	10,958
Total consideration	$	527,754

Immediately prior to the Merger, Baupost Group Securities, L.L.C., or Baupost, agreed to convert its $164.7 million of Keryx’s Convertible Notes into 35,582,335 Keryx Shares, in accordance with the terms of the governing indenture agreement, in exchange for an additional 4,000,000 Keryx Shares, or the Baupost Additional Shares. The aggregate 39.6 million Keryx Shares were then converted into Akebia Shares at the 0.37433 exchange ratio. The fair value of the Baupost Additional Shares, on an as-converted basis, of $13.4 million has been excluded from the purchase price and recorded within selling, general and administrative expenses in the Company’s consolidated financial statements, as the issuance of those shares by Keryx is considered to be a separate transaction under ASC 805, Business Combinations, since it was entered into by or on behalf of the acquirer or primarily for the benefit of the acquirer or the combined entity.

The Company allocated the $527.8 million purchase price to the identifiable assets acquired and liabilities assumed in the business combination at their fair values as of December 12, 2018 as follows (in thousands):

Cash and cash equivalents	$	5,257
Inventory	235,597
Trade accounts receivable, net	15,834
Prepaid expenses and other current assets	8,399
Goodwill	55,053
Intangible assets:
Developed product rights for Auryxia	329,130
Other intangible assets	545
Property and equipment, net	3,646
Other assets	14,441
Accounts payable	(17,570)
Accrued expenses	(42,972)
Deferred tax liability	(35,096)
Debt	(15,000)
Fair value of unfavorable executory contract	(29,510)
Total purchase price	$	527,754

In performing the purchase price allocation, the Company considered, among other factors, the intended future use of acquired assets, analysis of historical financial performance and estimates of future performance of Keryx’s business.

As part of the purchase price allocation, the Company identified developed product rights for Auryxia as the primary intangible asset. The fair value of the developed product rights for Auryxia was determined using the multi-period excess earnings method which is a variation of the income approach, and is a valuation technique that provides an estimate of the fair value of an asset based on the principle that the value of an intangible asset is equal to the present value of the incremental after-tax cash flows attributable to the asset, after taking charges for the use of other assets employed by the business. Key estimates and

assumptions used in this model were projected revenues and expenses related to the asset, estimated contributory asset charges, and a risk-adjusted discount rate of 20.0% used to calculate the present value of the future expected cash inflows from the asset. The intangible asset is being amortized on a straight-line basis over its estimated useful life, which at the time of the Merger was estimated to be nine years. During the second quarter of 2020, the Company identified indicators of impairment related to the developed product rights for Auryxia and recorded an impairment charge of $115.5 million and made a corresponding adjustment to the estimated useful life of the developed product rights for Auryxia from nine years to seven years (see Note 9 for additional information).

The Company also identified an executory contract in the supply agreement between Keryx and BioVectra Inc., or BioVectra, which includes future firm purchase commitments. This executory contract was deemed to have an off-market element related to the amount of purchase commitments that exceed the current forecast and as such, the Company recorded a liability in purchase accounting. As of the acquisition date, the fair value of the off-market element was $29.5 million. During the second quarter of 2020, the Company recorded an $11.0 million increase to the liability for excess purchase commitments and a corresponding charge to cost of goods sold (see Note 14 for additional information).

The goodwill represents the excess of the purchase price over the estimated fair value of net assets acquired. The factors contributing to the recognition of goodwill were based on several strategic and synergistic benefits that were expected to be realized from the Merger. These benefits included the expectation that the combined company would establish itself as a leading renal company with enhanced position and large market opportunity, synergistic utilization of Keryx’s commercial organization, and strengthening the combined company’s financial profile. Such goodwill is not deductible for tax purposes.

In connection with the Merger, the Company identified a deferred tax liability of $35.1 million as a result of the difference in the book basis and tax basis related to the identifiable inventory, other intangible assets, net and other liability. In determining the deferred tax liability to be recorded the Company elected to first consider the recoverability of the deferred tax assets acquired in the acquisition before considering the recoverability of the acquirer’s existing deferred tax assets.

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Available for Sale Securities

6 Months Ended

Jun. 30, 2020

Investments, Debt and Equity Securities [Abstract]

Available for Sale Securities

Available For Sale Securities

Cash, cash equivalents, and available for sale securities at June 30, 2020 and December 31, 2019 consisted of the following:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
	(in thousands)
June 30, 2020
Cash and cash equivalents	$	245,406	$	—	$	—	$	245,406
Available for sale securities:
U.S. government debt securities	$	49,952	$	—	$	(9)	$	49,943
Total available for sale securities	$	49,952	$	—	$	(9)	$	49,943
Total cash, cash equivalents, and available for sale securities	$	295,358	$	—	$	(9)	$	295,349

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
	(in thousands)
December 31, 2019
Cash and cash equivalents	$	147,449	$	—	$	—	$	147,449
Available for sale securities:
Certificates of deposit	$	245	$	—	$	—	$	245
Total available for sale securities	$	245	$	—	$	—	$	245
Total cash, cash equivalents, and available for sale securities	$	147,694	$	—	$	—	$	147,694

The estimated fair value of the Company’s available for sale securities balance at June 30, 2020, by contractual maturity, was as follows (in thousands):

Due in one year or less	$	49,943
Due after one year	—
Total available for sale securities	$	49,943

There were no realized gains or losses on available for sale securities for the three and six months ended June 30, 2020 and 2019. The following table summarizes the Company’s available for sale securities that were in a continuous unrealized loss position, but were not deemed to be other-than temporarily impaired, as of June 30, 2020:

	Unrealized Loss for Less Than 12 Months				Unrealized Loss for 12 Months or More				Total
	Gross Unrealized Losses		Estimated Fair Value		Gross Unrealized Losses		Estimated Fair Value		Gross Unrealized Losses		Estimated Fair Value
	(in thousands)
June 30, 2020
Available for sale securities:
U.S. government debt securities	$	(9)	$	49,943	$	—	$	—	$	(9)	$	49,943
Total	$	(9)	$	49,943	$	—	$	—	$	(9)	$	49,943

There were five securities as of June 30, 2020, that were in an unrealized loss position. The contractual terms of these securities do not permit the issuer to settle the securities at a price less than the amortized cost basis of the investment. As of June 30, 2020, the Company does not intend to sell these securities and it was not more likely than not that the Company would be required to sell these securities before the recovery of their amortized cost basis, which may be at maturity. The unrealized loss was determined to be non-credit related and was recognized in other comprehensive loss in the Company's unaudited condensed consolidated statements of operations and comprehensive loss during the three and six months ended June 30, 2020. As such, the Company did not recognize any credit losses during the three and six months ended June 30, 2020. Additionally, the Company did not have any available for sale securities that were in an unrealized loss position as of December 31, 2019.

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Fair Value of Financial Instruments

6 Months Ended

Jun. 30, 2020

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

Fair Value of Financial Instruments

The Company utilizes a portfolio management company for the valuation of the majority of its investments. This company is an independent, third-party vendor recognized to be an industry leader with access to market information that obtains or computes fair market values from quoted market prices, pricing for similar securities, recently executed transactions, cash flow models with yield curves and other pricing models. For valuations obtained from the pricing service, the Company performs due diligence to understand how the valuation was calculated or derived, focusing on the valuation technique used and the nature of the inputs.

Based on the fair value hierarchy, the Company classifies its cash equivalents and available for sale securities within Level 1 or Level 2. This is because the Company values its cash equivalents and available for sale securities using quoted market prices or alternative pricing sources and models utilizing market observable inputs.

Assets measured or disclosed at fair value on a recurring basis as of June 30, 2020 and December 31, 2019 are summarized below:

	Fair Value Measurements Using
	Level 1		Level 2		Level 3		Total
	(in thousands)
June 30, 2020
Assets:
Cash and cash equivalents	$	245,406	$	—	$	—	$	245,406
U.S. government debt securities	—		49,943		—		49,943
	$	245,406	$	49,943	$	—	$	295,349
Liabilities:
Derivative liability	$	—	$	—	$	1,890	$	1,890
	$	—	$	—	$	1,890	$	1,890

	Fair Value Measurements Using
	Level 1		Level 2		Level 3		Total
	(in thousands)
December 31, 2019
Assets:
Cash and cash equivalents	$	147,449	$	—	$	—	$	147,449
Certificates of deposit	—		245		—		245
	$	147,449	$	245	$	—	$	147,694
Liabilities:
Derivative liability	$	—	$	—	$	1,650	$	1,650
	$	—	$	—	$	1,650	$	1,650

The Company’s Loan Agreement with Pharmakon (see Note 11) contains certain provisions that change the underlying cash flows of the debt instrument, including a potential extension to the interest-only period dependent on both no event of default having occurred and continuing and on the Company achieving certain regulatory and revenue conditions. The Company also assessed the acceleration of the obligations under the Loan Agreement under an event of default. In addition, under certain circumstances, a default interest rate will apply on all outstanding obligations during the occurrence and continuance of an event of default. In accordance with ASC 815, the Company concluded that these features are not clearly and closely related to the host instrument, and represent a single compound derivative that is required to be re-measured at fair value on a quarterly basis.

The events of default include maintaining, on an annual basis, a minimum liquidity threshold starting in 2021, and on a quarterly basis, a minimum net sales threshold for Auryxia starting in the fourth quarter of 2020. The Company recorded a derivative liability related to the Company’s Loan Agreement with Pharmakon of $1.9 million and $1.7 million as of June 30, 2020 and December 31, 2019, respectively. The Company classified the derivative liability as a non-current liability on the unaudited condensed consolidated balance sheet as of June 30, 2020 and December 31, 2019. The estimated fair value of the derivative liability on both June 30, 2020 and December 31, 2019 was determined using a scenario-based approach and discounted cash flow model that includes principal and interest payments under various scenarios involving clinical development success for vadadustat and various cash flow assumptions. Probabilities surrounding clinical development success were derived using industry benchmarks. Should the Company’s assessment of the probabilities around these scenarios change, including for changes in market conditions, there could be a change to the fair value of the derivative liability.

The following table provides a roll-forward of the fair value of the derivative liability (in thousands):

Balance at December 31, 2019	$	1,650
Change in fair value of derivative liability, recorded as other expense	90
Balance at Balance at March 31, 2020	$	1,740
Change in fair value of derivative liability, recorded as other expense	150
Balance at June 30, 2020	$	1,890

The Company had no other assets or liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) at June 30, 2020 and December 31, 2019.

Investment securities are exposed to various risks such as interest rate, market and credit risks. When the Company holds investment securities, due to the level of risk associated with certain investment securities and the level of uncertainty related to changes in the value of investment securities, the Company considers if changes in risks in the near term would result in material changes in the fair value of investments.

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Inventory

6 Months Ended

Jun. 30, 2020

Inventory Disclosure [Abstract]

Inventory

Inventory

The components of inventory, inclusive of step-up as a result of bringing Keryx’s inventory onto Akebia’s books at fair value in connection with the Merger, are summarized as follows:

	June 30, 2020		December 31, 2019
	(in thousands)
Raw materials	$	2,078	$	2,278
Work in process	101,641		137,858
Finished goods	38,636		42,096
Total inventory	$	142,355	$	182,232

Long-term inventory, which primarily consists of raw materials and work in process, is included in other assets in the Company’s unaudited condensed consolidated balance sheets.

	June 30, 2020		December 31, 2019
	(in thousands)
Balance Sheet Classification:
Inventory	$	104,603	$	116,349
Other assets	37,752		65,883
Total inventory	$	142,355	$	182,232

Inventory amounts written down as a result of excess, obsolescence, scrap or other reasons and charged to cost of goods sold totaled $9.9 million and $10.1 million during the three and six months ended June 30, 2020, respectively, in addition to related step-up charges of $6.0 million during the three and six months ended June 30, 2020. Inventory write downs charged to cost of goods sold totaled $1.3 million and $3.0 million during the three and six months ended June 30, 2019, respectively, in addition to related step-up charges of $1.9 million and $2.8 million during the three and six months ended June 30, 2019, respectively. The increase for the three and six months ended June 30, 2020 was primarily related to the write-down of inventory associated with specific lots of Auryxia because it was determined that these lots were not manufactured in conformance with the FDA's GMP guidance relating to validation.

If future sales of Auryxia are lower than expected, the Company may be required to write-down the value of such inventories. Inventory write-downs and losses on purchase commitments are recorded as a component of cost of sales in the unaudited condensed consolidated statement of operations.

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Intangible Assets and Goodwill

6 Months Ended

Jun. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets and Goodwill

Intangible Assets and Goodwill

Intangible Assets

The following table presents the Company’s intangible assets at June 30, 2020 and December 31, 2019 (in thousands):

	June 30, 2020
	Gross Carrying Value		Accumulated Amortization		ASC 842 Adjustment		Total		Estimated useful life
Acquired intangible assets:
Developed product rights for Auryxia	$	213,603	$	(56,119)	—		$	157,484	7 years
Favorable lease	545		(5)		(540)		—		N/A
Total	$	214,148	$	(56,124)	$	(540)	$	157,484

	December 31, 2019
	Gross Carrying Value		Accumulated Amortization		ASC 842 Adjustment		Total		Estimated useful life
Acquired intangible assets:
Developed product rights for Auryxia	$	329,130	$	(37,918)	—		$	291,212	9 years
Favorable lease	545		(5)		(540)		—		N/A
Total	$	329,675	$	(37,923)	$	(540)	$	291,212

On December 12, 2018, the Company completed the Merger, whereby it acquired certain definite-lived intangible assets, including the developed product rights for Auryxia and a favorable lease. The Company amortizes its definite-lived intangible assets acquired as part of the Merger using the straight-line method, which is considered the best estimate of economic benefit, over its estimated useful life. As a result of the adoption of ASC 842 on January 1, 2019, the Company reclassed the remaining balance of the favorable lease intangible asset into the operating lease asset. The Company recorded $9.1 million in amortization expense related to the developed product rights for Auryxia during each of the three months ended June 30, 2020 and 2019 and $18.2 million during each of the six months ended June 30, 2020 and 2019. Estimated future amortization expense for the intangible asset as of June 30, 2020 is as follows (in thousands):

	Total
2020	$	14,317
2021	28,633
2022	28,634
2023	28,633
2024	28,634
Thereafter	28,633
	$	157,484

Auryxia Intangible Asset Impairment

In the second quarter of 2020, in connection with a routine business review, the Company reduced its short-term and long-term Auryxia revenue forecast. This reduction was primarily driven by the compounding impact of the September 2018 CMS decision that rescinded Medicare Part D coverage of Auryxia for the IDA Indication and the related imposition by CMS of a prior authorization requirement for Auryxia for the Hyperphosphatemia Indication. As a result, the Company determined indicators of impairment existed for the developed product rights for Auryxia and performed an undiscounted cash flow analysis pursuant to ASC 360-10, Impairment or Disposal of Long-lived Assets, to determine if the cash flows expected to be generated by the Auryxia asset group over the estimated remaining useful life of the primary assets were sufficient to recover the carrying value of the Auryxia asset group. Based on this analysis, the undiscounted cash flows were not sufficient to recover the carrying value of the Auryxia asset group. As a result, the Company was required to perform Step 3 of the impairment test to determine the fair value of the Auryxia asset group.

To estimate the fair value, the Company performed a business enterprise valuation for the Auryxia asset group using the income approach, which is based on a discounted cash flow analysis and calculates the fair value by estimating the after-tax cash flows attributable to the asset group and then discounting the after-tax cash flows to present value using a risk-adjusted discount rate. Key estimates and assumptions used in the valuations included projected revenues and expenses related to the asset, estimated contributory asset charges, and a risk-adjusted discount rate of 9.5% to calculate the present value of the future expected cash inflows. The Company believes its assumptions are consistent with the plans and estimates that a market participant would use to manage the business. The discount rates used are intended to reflect the risks inherent in future cash flow projections and were based on an estimate of the weighted average cost of capital, or WACC, of market participants relative to the Auryxia asset group.

As a result of this analysis, the fair value of the Auryxia asset group was below its carrying value, and the Company recorded an impairment charge of $115.5 million during the three months ended June 30, 2020 and made a corresponding adjustment to the estimated useful life of the developed product rights for Auryxia from nine years to seven years. The impairment charge has been entirely allocated to the Company’s only intangible asset, the developed product rights for Auryxia, as all other long-lived assets had fair values that were either equal to or greater than their carrying value. Per ASC 360-10, the carrying amount of a long-lived asset of the group would not be reduced below its fair value. The Company believes its assumptions used to determine the fair value of the Auryxia asset group are reasonable. In the event the estimates and assumptions used in the valuation of the Auryxia asset group, including the forecasted projections, change in the future, additional impairment charges could be recorded in the future.

Goodwill

Goodwill was $55.1 million as of June 30, 2020 and December 31, 2019, derived as follows (in thousands):

Total Merger consideration	$	527,754
Less: Fair value of identified acquired assets and liabilities, net	(472,701)
Goodwill	$	55,053

The Company operates in one operating segment which the Company considers to be the only reporting unit. Goodwill is evaluated at the reporting unit level for impairment on an annual basis as of October 1, and more frequently if indicators are present or changes in circumstances suggest that an impairment may exist. There were no impairments of goodwill during either of the three and six months ended June 30, 2020 or 2019, respectively.

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Accrued Expenses

6 Months Ended

Jun. 30, 2020

Payables and Accruals [Abstract]

Accrued Expenses

Accrued Expenses

Accrued expenses as of June 30, 2020 and December 31, 2019 are as follows:

	June 30, 2020		December 31, 2019
	(in thousands)
Accrued clinical	$	63,046	$	61,815
Product revenue allowances	40,975		30,552
Accrued payroll	9,486		12,604
MTPC - Supply of Validation Drug Product	6,441		—
Lease liability	5,206		4,989
Royalties	2,815		2,713
Accrued commercial manufacturing	2,676		2,680
Professional fees	1,747		3,444
Accrued severance	712		725
Accrued other	9,728		9,549
Total accrued expenses	$	142,832	$	129,071

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Debt

6 Months Ended

Jun. 30, 2020

Debt Disclosure [Abstract]

Debt

Debt

Future principal payments on the Term Loans (as defined below) as of June 30, 2020 are as follows (in thousands):

	Principal Payments
	(in thousands)
2020	$	—
2021	—
2022	7,140
2023	30,354
2024	42,506
Thereafter	—
Total before unamortized discount and issuance costs	80,000
Less: unamortized discount and issuance costs	(3,662)
Total term loans	$	76,338

Term Loans

On November 11, 2019, the Company, with Keryx as guarantor, entered into a loan agreement, or the Loan Agreement, with BioPharma Credit PLC as collateral agent and a lender, or the Collateral Agent, and BioPharma Credit Investments V (Master) LP as a lender, pursuant to which term loans in an aggregate principal amount of $100.0 million are made available to the Company in two tranches, subject to certain terms and conditions, or the Term Loans. BioPharma Credit PLC subsequently transferred its interest in the term loans, solely in its capacity as a lender, to its affiliate, BPCR Limited Partnership. The Collateral Agent and BPCR Limited Partnership are collectively referred to as Pharmakon. The first tranche of $80.0 million, or Tranche A, was drawn on November 25, 2019, or the Tranche A Funding Date. The second tranche, available until December 31, 2020, allows the Company to borrow, at its option, an additional $20.0 million, or Tranche B, subject to the satisfaction of customary conditions. The date on which Tranche B is drawn, the Tranche B Funding Date, and each of the Tranche A Funding Date and the Tranche B Funding Date, a Funding Date.

Proceeds from the Term Loans may be used for general corporate purposes. The Company and Keryx entered into a Guaranty and Security Agreement with the Collateral Agent, or the Guaranty and Security Agreement, on the Tranche A Funding Date. Pursuant to the Guaranty and Security Agreement, the Company’s obligations under the Term Loans are unconditionally guaranteed by Keryx, or the Guarantee. Additionally, the obligations of the Company and Keryx under the Term Loans and the Guarantee are secured by a first priority lien on certain assets of the Company and Keryx, including Auryxia and certain related assets, cash, and certain equity interests held by the Company and Keryx, collectively the Collateral.

The Term Loans bear interest at a floating rate per annum equal to the three-month LIBOR rate plus 7.50%, subject to a 2.00% LIBOR floor and a 3.35% LIBOR cap, payable quarterly in arrears. The Term Loans will mature on the fifth anniversary of the Tranche A Funding Date, or the Maturity Date. The Company will repay the principal under the Term Loans in equal quarterly payments starting on the 33rd-month anniversary of the applicable Funding Date or, if certain conditions are met, it will have the option to repay the principal in equal quarterly payments starting on the 48th-month anniversary of the applicable Funding Date, or collectively the Amortization Schedule. Under certain circumstances, unless certain liquidity conditions are met, the Maturity Date may decrease by up to one year, and the Amortization Schedule may correspondingly commence up to one year earlier.  

On the Tranche A Funding Date, the Company paid to Pharmakon a facility fee equal to 2.00% of the aggregate principal amount of the Term Loans, or $2.0 million, in addition to other expenses incurred by Pharmakon and reimbursed by the Company, or Lender Expenses. The Tranche A draw was $77.3 million, net of facility fee, Lender Expenses and issuance costs. The Loan Agreement permits voluntary prepayment at any time in whole or in part, subject to a prepayment premium. The prepayment premium would be 2.00% of the principal amount being prepaid prior to the third anniversary of the applicable Funding Date, 1.00% on or after the third anniversary, but prior to the fourth anniversary, of the applicable Funding Date, and 0.50% on or after the fourth anniversary of the applicable Funding Date but prior to the Maturity Date, and a make-whole premium on or prior to the second anniversary of the applicable Funding Date in an amount equal to foregone interest through the second anniversary of the applicable Funding Date. A change of control triggers a mandatory prepayment of the Term Loans.

The Loan Agreement contains customary representations, warranties, events of default and covenants of the Company and its subsidiaries, including maintaining, on an annual basis, a minimum liquidity threshold starting in 2021, and on a quarterly basis, a minimum net sales threshold for Auryxia starting in the fourth quarter of 2020. If an event of default occurs and is continuing under the Loan Agreement, the Collateral Agent is entitled to take enforcement action, including acceleration of amounts due under the Loan Agreement. Under certain circumstances, a default interest rate will apply on all outstanding obligations during the occurrence and continuance of an event of default. As of June 30, 2020 and December 31, 2019, the Company determined that no events of default had occurred.

The Company assessed the terms and features of the Loan Agreement in order to identify any potential embedded features that would require bifurcation or any beneficial conversion feature. As part of this analysis, the Company assessed the economic characteristics and risks of the Loan Agreement, including put and call features. The terms and features assessed include a potential extension to the interest-only period dependent on both no event of default having occurred and continuing and on the Company achieving certain regulatory and revenue conditions. The Company also assessed the acceleration of the obligations under the Loan Agreement under an event of default. In addition, under certain circumstances, a default interest rate will apply on all outstanding obligations during the occurrence and continuance of an event of default. In accordance with ASC 815, the Company concluded that these features are not clearly and closely related to the host instrument, and represent a single compound derivative that is required to be re-measured at fair value on a quarterly basis.

The fair value of the derivative liability related to the Company’s Loan Agreement with Pharmakon was $1.9 million and $1.7 million as of June 30, 2020 and December 31, 2019, respectively. The Company classified the derivative liability as a non-current liability on the unaudited condensed consolidated balance sheet as of June 30, 2020.

During the three and six months ended June 30, 2020, the Company recognized approximately $2.2 million and $4.4 million, respectively, of interest expense related to the Loan Agreement.

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Warrant	6 Months Ended
	Jun. 30, 2020
Warrants and Rights Note Disclosure [Abstract]
Warrant	WarrantIn connection with the Janssen Agreement, in February 2017 the Company issued a warrant to purchase 509,611 shares of the Company’s common stock at an exercise price of $9.81 per share. The warrant was fully vested upon issuance and is exercisable in whole or in part, at any time prior to February 9, 2022. The warrant satisfied the equity classification criteria of ASC 815, and is therefore classified as an equity instrument. The fair value at issuance of $3.4 million was calculated using the Black Scholes option pricing model and was charged to research and development expense as it represented consideration for a license for which the underlying intellectual property was deemed to have no alternative future use. As of June 30, 2020, the warrant remains outstanding and expires on February 9, 2022.

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Stockholders' Equity

6 Months Ended

Jun. 30, 2020

Equity [Abstract]

Stockholders' Equity

Stockholders’ Equity

Authorized and Outstanding Capital Stock

On June 5, 2020, the Company filed a Certificate of Amendment to its Ninth Amended and Restated Certificate of Incorporation, or its Charter, to increase the number of authorized shares of common stock from 175,000,000 to 350,000,000. As of June 30, 2020, the authorized capital stock of the Company included 350,000,000 shares of common stock, par value $0.00001 per share, of which 143,129,409 and 121,674,568 shares were issued and outstanding at June 30, 2020 and December 31, 2019, respectively; and 25,000,000 shares of undesignated preferred stock, par value $0.00001 per share, of which no shares were issued and outstanding at June 30, 2020 and December 31, 2019.

At-the-Market Facility

On November 12, 2019, the Company entered into an Amended and Restated Controlled Equity Offering^SM Sales Agreement with Cantor Fitzgerald & Co. for the offer and sale of common stock at the then current market prices in amounts to be determined from time to time. Also, on November 12, 2019, the Company filed a prospectus supplement pursuant to which it was able to offer and sell up to $75.0 million its common stock at the then current market prices from time to time. In December 2019, the Company commenced sales under this program. Through December 31, 2019, the Company sold 2,684,392 shares of common stock under this program with net proceeds (after deducting commissions and other offering expenses) of $16.8 million. During the three months ended March 31, 2020, the Company sold 7,973,967 shares of common stock under this program with net proceeds (after deducting commissions and other offering expenses) of $56.7 million. On March 12, 2020, the Company filed an additional prospectus supplement, pursuant to which it is able to offer and sell up to $65.0 million in its common stock at current market prices from time to time. During the three and six months ended June 30,

2020 and through the date of this Quarterly Report on Form 10-Q, the Company did not sell any shares of common stock pursuant to the March 12, 2020 prospectus supplement.

Equity Offering

On May 14, 2020, the Company sold 11,000,000 shares of its common stock in a public offering at a price to the public of $12.00 per share. The aggregate net proceeds received by the Company from the offering were $123.8 million, net of underwriting discounts and commissions and offering expenses payable by the Company. Additionally, on May 19, 2020, the underwriters exercised their option to purchase an additional 1,650,000 shares of the Company's common stock at the public offering price of $12.00 per share. The aggregate net proceeds received by the Company from the underwriters' exercise of their option were $18.6 million, net of underwriting discounts and commissions and offering expenses payable by the Company. The total aggregate net proceeds received by the Company from the public offering, including the underwriters' exercise of their option, were $142.4 million.

Equity Plans

On February 28, 2014, the Company’s Board of Directors adopted its 2014 Incentive Plan and its 2014 Employee Stock Purchase Plan, or the 2014 ESPP, which were subsequently approved by its shareholders and became effective upon the closing of the Company’s initial public offering on March 25, 2014. The Company’s 2014 Incentive Plan was subsequently amended on December 11, 2018, which amendment did not require shareholder approval. The Company’s 2014 Incentive Plan, as amended, is referred to as the 2014 Plan. The 2014 Plan replaced the Company’s Amended and Restated 2008 Equity Incentive Plan, or the 2008 Plan; however, options or other awards granted under the 2008 Plan prior to the adoption of the 2014 Plan that have not been settled or forfeited remain outstanding and effective. On June 6, 2019, the Company’s shareholders approved the Amended and Restated 2014 Employee Stock Purchase Plan, or the ESPP. In May 2016, the Company’s Board of Directors approved an inducement award program that was separate from the Company’s equity plans and which, consistent with Nasdaq Listing Rule 5635(c)(4), did not require shareholder approval, or the Inducement Award Program. During the six months ended June 30, 2020, the Company granted 786,750 options to purchase shares of the Company’s common stock to new hires under the Inducement Award Program, of which all 786,750 options to purchase Akebia Shares remained outstanding at June 30, 2020.

The 2014 Plan allows for the granting of stock options, stock appreciation rights, or SARs, restricted stock, unrestricted stock, RSUs, performance awards and other awards convertible into or otherwise based on shares of the Company’s common stock. Dividend equivalents may also be provided in connection with an award under the 2014 Plan. The Company’s employees, officers, directors and consultants and advisors are eligible to receive awards under the 2014 Plan. The Company initially reserved 1,785,000 shares of its common stock for the issuance of awards under the 2014 Plan. The 2014 Plan provides that the number of shares reserved and available for issuance under the 2014 Plan will automatically increase annually on January 1 of each calendar year, by an amount equal to three percent (3%) of the number of Akebia Shares outstanding on a fully diluted basis as of the close of business on the immediately preceding December 31, or the 2014 Plan Evergreen Provision. The Company’s Board of Directors may act prior to January 1 of any year to provide that there will be no automatic increase in the number of Akebia Shares available for grant under the 2014 Plan for that year (or that the increase will be less than the amount that would otherwise have automatically been made). On December 12, 2018, in connection with the consummation of the Merger, the Company assumed outstanding and unexercised options to purchase Keryx Shares, as adjusted by the Exchange Multiplier pursuant to the terms of the Merger Agreement, under the following Keryx equity plans, or the Keryx Equity Plans: the Keryx 1999 Share Option Plan, the Keryx 2004 Long-Term Incentive Plan, the Keryx 2007 Incentive Plan, the Keryx Amended and Restated 2013 Incentive Plan, and the Keryx 2018 Equity Incentive Plan, or the Keryx 2018 Plan. In addition, the number of Keryx Shares available for issuance under the Keryx 2018 Plan, as adjusted by the Exchange Multiplier pursuant to the terms of the Merger Agreement, may be used for awards granted by the Company under its 2014 Plan, or the Assumed Shares, provided that the Company uses the Assumed Shares for individuals who were not employees or directors of the Company prior to the consummation of the Merger. During the six months ended June 30, 2020, the Company granted 1,714,800 options to purchase Akebia Shares to employees under the 2014 Plan, 786,750 options to purchase Akebia Shares to employees under the Inducement Award Program, 2,367,500 Akebia RSUs to employees under the 2014 Plan, 479,000 Akebia PSUs to employees under the 2014 plan, 220,900 options to purchase Akebia Shares to directors under the 2014 Plan, and 95,900 Akebia RSUs to directors under the 2014 Plan.

The ESPP provides for the issuance of options to purchase shares of the Company’s common stock to participating employees at a discount to their fair market value. As noted above, the Company’s stockholders approved the ESPP, which amended and restated the Company’s 2014 ESPP, on June 6, 2019. The maximum aggregate number of shares at June 30, 2020 of the Company’s common stock available for future issuance under the ESPP is 5,600,968. Under the ESPP, each offering period is six months, at the end of which employees may purchase shares of the Company’s common stock through payroll deductions

made over the term of the offering. The per-share purchase price at the end of each offering period is equal to the lesser of eighty-five percent (85%) of the closing price of the Company’s common stock at the beginning or end of the offering period. 

Shares Reserved for Future Issuance

The Company has reserved for future issuance the following number of shares of common stock:

	June 30, 2020	December 31, 2019
Common stock options and RSUs outstanding (1)	16,032,074	12,195,031
Shares available for issuance under Akebia equity    plans (2)	2,784,253	2,983,256
Warrant to purchase common stock	509,611	509,611
Shares available for issuance under the ESPP (3)	5,600,968	5,715,992
Total	24,926,906	21,403,890

(1)Includes awards granted under the 2014 Plan and the Inducement Award Program and awards issued in connection with the Merger.

(2)On January 1, 2020, January 1, 2019 and January 1, 2018, the shares reserved for future grants under the 2014 Plan increased by 4,031,376, 3,801,198 and 1,575,329 shares, respectively, pursuant to the 2014 Plan Evergreen Provision. On December 12, 2018, the shares reserved for future grants under the 2014 Plan increased by 2,323,213 shares as a result of the Company’s addition of the Assumed Shares to the 2014 Plan. On January 30, 2019, the Company’s Board of Directors approved 3,150,000 shares for issuance as option awards in fiscal year 2019 under the Inducement Award Program.

(3)On June 6, 2019, the shares reserved for future issuance under the ESPP increased by 5,200,000 shares upon shareholder approval of the Amended and Restated 2014 Employee Stock Purchase Plan. On February 28, 2018 and February 28, 2017, the shares reserved for future issuance under the 2014 ESPP remained unchanged. There were no increases in the shares reserved for future issuance pursuant to the evergreen provision under the ESPP in 2017 and 2018 as the maximum aggregate number of shares available for purchase under the 2014 ESPP had reached its cap of 739,611 on February 28, 2016.

Stock-Based Compensation

Stock Options

Service-Based Stock Options

On February 28, 2020, as part of the Company’s annual grant of equity, the Company issued 1,714,800 stock options to employees. In addition, the Company issues stock options to directors, new hires and occasionally to other employees not in connection with the annual grant process. Options granted by the Company vest over periods of between 12 and 48 months, subject, in each case, to the individual’s continued service through the applicable vesting date. Options vest either 100% on the first anniversary of the grant date or in installments of (i) 25% at the one year anniversary and (ii) 12 equal quarterly installments beginning after the one year anniversary of the grant date, subject to the individual’s continuous service with the Company. Options generally expire ten years after the date of grant. The Company recorded approximately $2.4 million and $1.1 million of stock-based compensation expense related to stock options during the three months ended June 30, 2020 and 2019, respectively, and approximately $4.0 million and $2.2 million during the six months ended June 30, 2020 and 2019, respectively.

Performance-Based Stock Options

On December 12, 2018, pursuant to the Merger Agreement, each outstanding and unexercised performance-based option to acquire Keryx Shares granted under a Keryx equity plan converted into a service-based option or performance-based option to acquire Akebia Shares, with the number of shares and exercise price adjusted by the Exchange Multiplier. As a result, the Company issued 233,954 performance-based options related to the Merger. The Company did not have any performance-based options outstanding in fiscal year 2018 prior to the Merger. The Company did not issue any performance-based options during the six months ended June 30, 2020 and 2019. As of June 30, 2020, the Company had no performance-based options outstanding compared to 46,790 performance-based options outstanding at December 31, 2019. The potential range of shares issuable pursuant to the Company’s performance-based options range from 0% to 100% of the target shares based on financial

measures. Performance-based options vest up to 50% upon achievement of performance condition and up to 50% one year following achievement of the performance condition.

Restricted Stock Units

Service-Based Restricted Stock Units

On February 28, 2020, as part of the Company’s annual grant of equity, the Company issued 2,268,000 restricted stock units, or RSUs, to employees. In addition, the Company occasionally issues RSUs not in connection with the annual grant process to employees. Generally, RSUs granted by the Company vest in one of the following ways: (i) 100% of each RSU grant vests on either the first or the third anniversary of the grant date, (ii) one third of each RSU grant vests on the first, second and third anniversaries of the grant date, subject, in each case, to the individual’s continued service through the applicable vesting date, or (iii) 50% of each RSU grant vests on the first anniversary and 25% of each RSU grant vests in 6 months increment after the one year anniversary of the grant date. The expense recognized for these awards is based on the grant date fair value of the Company’s common stock multiplied by the number of units granted and recognized on a straight-line basis over the vesting period. The Company recorded approximately $4.2 million and $1.2 million of stock-based compensation expense related to employee RSUs during the three months ended June 30, 2020 and 2019, respectively, and approximately $7.2 million and $2.1 million during the six months ended June 30, 2020 and 2019, respectively.

Performance-Based Restricted Stock Units

On February 28, 2020, as part of the Company’s annual grant of equity, the Company issued 479,000 performance-based restricted stock units, or PSUs, to the Company’s executives. The PSUs granted by the Company vest in connection with the achievement of specified commercial and regulatory milestones. The PSUs also feature a time-based vesting component. The expense recognized for these awards is based on the grant date fair value of the Company’s common stock multiplied by the number of units granted and recognized over time based on the probability of meeting such commercial and regulatory milestones. The Company recorded approximately $0.2 million and $0 of stock-based compensation expense related to employee PSUs during the three months ended June 30, 2020 and 2019, respectively, and approximately $0.3 million and $0 during the six months ended June 30, 2020 and 2019, respectively.

Employee Stock Purchase Plan

The first offering period under the ESPP opened on January 2, 2015. The Company issued 115,024 shares during the six months ended June 30, 2020. The Company recorded approximately $0.2 million and $43,000 of stock-based compensation expense related to the ESPP during the three months ended June 30, 2020 and 2019, respectively, and approximately $0.3 million and $0.1 million during the six months ended June 30, 2020 and 2019, respectively.

Compensation Expense Summary

The Company has classified its stock-based compensation expense related to share-based awards as follows:

	Three Months Ended				Six Months Ended
	June 30, 2020		June 30, 2019		June 30, 2020		June 30, 2019
	(in thousands)				(in thousands)
Research and development	$	1,716	$	684	$	3,258	$	1,562
Selling, general and administrative	5,148		1,600		8,522		2,816
Total	$	6,864	$	2,284	$	11,780	$	4,378

Compensation expense by type of award:

	Three Months Ended				Six Months Ended
	June 30, 2020		June 30, 2019		June 30, 2020		June 30, 2019
	(in thousands)				(in thousands)
Stock options	$	2,366	$	1,073	$	3,983	$	2,185
Restricted stock units	4,344		1,168		7,486		2,102
Employee stock purchase plan	154		43		311		91
Total	$	6,864	$	2,284	$	11,780	$	4,378

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Commitments and Contingencies

6 Months Ended

Jun. 30, 2020

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Leases

The Company leases approximately 65,167 square feet of office and lab space in Cambridge, Massachusetts under a lease which was most recently amended in April 2018, collectively the Cambridge Lease. Under the Third Amendment to the Cambridge Lease, or the Third Amendment, executed in July 2016, total monthly lease payments under the initial base rent were approximately $242,000 and are subject to annual rent escalations. In addition to such annual rent escalations, base rent payments for a portion of said premises commenced on January 1, 2017 in the monthly amount of approximately $22,000. The Fourth Amendment to the Cambridge Lease, executed in May 2017, provided additional storage space to the Company and did not impact rent payments. In April 2018, the Company entered into a Fifth Amendment to the Cambridge Lease, or the Fifth Amendment, for an additional 19,805 square feet of office space on the 12th floor. Monthly lease payments for the existing 45,362 square feet of office and lab space, under the Third Amendment, remain unchanged. The new space leased by the Company was delivered in September 2018 and additional monthly lease payments of approximately $135,000 commenced in February 2019 and are subject to annual rent escalations, which commenced in September 2019.

Additionally, as a result of the Merger, the Company now has a lease for 27,300 square feet of office space in Boston, Massachusetts, or the Boston Lease, which expires in February 2023. The total monthly lease payments under the base rent are approximately $136,000 and are subject to annual rent escalations.

The term of the Cambridge Lease with respect to the office space expires on September 11, 2026, with one five-year extension option available. The term of the Cambridge Lease with respect to the lab space expires on November 30, 2021, with an extension option for one additional period of two years. The term of the Boston Lease office space expires on February 28, 2023, with an extension option for one additional five-year extension option available. The renewal options in the Company’s real estate leases were not included in the calculation of the operating lease assets and operating lease liabilities as the renewal is not reasonably certain. The lease agreements do not contain residual value guarantees. Operating lease costs were $1.6 million for each of the three months ended June 30, 2020 and 2019 and $3.3 million for each of the six months ended June 30, 2020 and 2019. Cash paid for amounts included in the measurement of operating lease liabilities was $1.8 million and $1.7 million for the three months ended June 30, 2020 and 2019, respectively, and $3.5 million and $3.4 million for the six months ended June 30, 2020 and 2019, respectively.

In September 2019, Keryx entered into an agreement to sublease the Boston office space to Foundation Medicine, Inc., or Foundation. The sublease is subject and subordinate to the Boston Lease between Keryx and the landlord. The term of the sublease commenced on October 16, 2019, upon receipt of the required consent from the landlord for the sublease agreement, and expires on February 28, 2023. Foundation is obligated to pay Keryx rent that approximates the rent due from Keryx to its landlord with respect to the Boston Lease. Sublease rental income is recorded to other income. Keryx continues to be obligated for all payment terms pursuant to the Boston Lease, and the Company will guaranty Keryx’s obligations under the sublease. Keryx recorded $0.5 million and $0.9 million in sublease rental income from Foundation during the three and six months ended June 30, 2020, respectively.

The Company has not entered into any material short-term leases or financing leases as of June 30, 2020.

The total security deposit in connection with the Cambridge Lease is $1.6 million as of June 30, 2020. Additionally, the Company recorded $0.8 million for the security deposit under the Boston Lease. Both the Cambridge Lease and the Boston Lease have their security deposits in the form of a letter of credit, all of which are included in prepaid expenses and other current assets in the Company’s unaudited condensed consolidated balance sheets as of June 30, 2020.

As of June 30, 2020, undiscounted minimum rental commitments under non-cancelable leases, for each of the next five years and total thereafter are as follows:

	Operating Leases		Lease Payments to be Received from Sublease		Net Operating Lease Payments
	(in thousands)
Remaining 2020	$	3,068	$	888	$	2,180
2021	7,064		1,797		5,267
2022	6,735		1,824		4,911
2023	5,347		307		5,040
2024	5,116		—		5,116
Thereafter	8,818		—		8,818
Total	$	36,148	$	4,816	$	31,332

In arriving at the operating lease liabilities, the Company applied incremental borrowing rates ranging from 5.91% to 6.94%, which were based on the remaining lease term at the date of adoption of ASC 842, which was January 1, 2019. As of June 30, 2020, the remaining lease terms ranged from 1.42 years to 6.20 years. As of June 30, 2020, the following represents the difference between the remaining undiscounted minimum rental commitments under non-cancelable leases and the operating lease liabilities:

	Operating Leases
	(in thousands) Total
Undiscounted minimum rental commitments	$	36,148
Present value adjustment using incremental borrowing rate	(6,079)
Operating lease liabilities	$	30,069

Manufacturing Agreements

As part of the Merger, the Company retained Keryx’s commercial supply agreements with BioVectra and Siegfried Evionnaz SA, or Siegfried, to supply commercial drug substance for Auryxia.

Pursuant to the Manufacture and Supply Agreement with BioVectra and the Product Manufacture and Supply and Facility Construction Agreement with BioVectra, collectively the BioVectra Agreement, the Company has agreed to purchase a minimum quantity of drug substance of Auryxia at predetermined prices. The price per kilogram will decrease with an increase in quantity above the minimum purchase quantity. In addition, the BioVectra Agreement contained contingent milestone payments for capital developments in connection with construction of an expansion of the site of the BioVectra production facility for the manufacture of drug substance for Auryxia. These milestone payments were achieved by BioVectra and fully recorded prior to the Merger. These milestone payments are recorded in other assets and amortized into drug substance as inventory is released to the Company. The term of the BioVectra Agreement expires in late 2026, after which, it automatically renews for specified terms until terminated. The Company may terminate the BioVectra Agreement prior to the expiration of the contract term, which could result in early termination fee. As of June 30, 2020, the Company is required to purchase a minimum quantity of drug substance for Auryxia annually at a total cost of approximately $127.0 million through the end of the contract term.

As part of purchase accounting, the Company identified an executory contract in the BioVectra Agreement, which includes future firm purchase commitments. This executory contract was deemed to have an off-market element related to the amount of purchase commitments that exceed the current forecast. As a result, the Company recorded a liability of $29.5 million in purchase accounting as of the acquisition date for the fair value of the off-market element. In the second quarter of 2020, in connection with the reduced short-term and long-term Auryxia revenue forecast discussed in Note 9, the Company increased its liability for excess purchase commitments by $11.0 million for a total liability of $41.5 million and recorded a corresponding charge to cost of goods sold. Additionally, through June 30, 2020, the Company recorded $1.0 million in accretion expense related to the present value discount associated with this liability.

Pursuant to the Siegfried Master Manufacturing Services and Supply Agreement, or the Siegfried Agreement, the Company has agreed to purchase a minimum quantity of drug substance of Auryxia at predetermined prices. The price per kilogram will decrease with an increase in quantity above the minimum purchase quantity. The term of the Siegfried Agreement expires on December 31, 2021, after which, it automatically renews for one year terms until terminated. The Siegfried Agreement provides for certain termination rights prior to December 31, 2021 for the Company. As of June 30, 2020, the Company is required to purchase a minimum quantity of drug substance for Auryxia annually at a total cost of approximately $51.8 million through the year ending December 31, 2021.

On April 9, 2019, the Company entered into a Supply Agreement with Esteve Química, S.A., or Esteve, or the Esteve Agreement. The Esteve Agreement includes the terms and conditions under which Esteve will manufacture vadadustat drug substance, or API, for commercial use. Pursuant to the Esteve Agreement, the Company provides rolling forecasts to Esteve on a quarterly basis, or the Esteve Forecast. The Esteve Forecast reflects the Company’s needs for API produced by Esteve over a certain number of months, represented as a quantity of API per calendar quarter. The parties have agreed to a volume-based pricing structure under the Esteve Agreement. The Esteve Agreement has an initial term of four years, beginning April 9, 2019 and ending April 9, 2023. As of June 30, 2020, the Company had a minimum commitment with Esteve for $13.6 million through the second quarter of 2021. Subsequent to June 30, 2020, the minimum commitment with Esteve increased to $23.9 million through the third quarter of 2021.

On March 11, 2020, the Company entered into a Supply Agreement with Patheon Inc., or Patheon, or the Patheon Agreement. The Patheon Agreement includes the terms and conditions under which Patheon will manufacture vadadustat drug product for commercial use. Pursuant to the Patheon Agreement, the Company provides Patheon a long-term forecast on an annual basis, as well as short-term forecasts on a quarterly basis, or the Patheon Forecast. The Patheon Forecast reflects the Company’s needs for commercial supply of vadadustat drug product produced by Patheon, represented as a quantity of drug product per calendar quarter. The parties have agreed to a volume-based pricing structure under the Patheon Agreement. The Patheon Agreement has an initial term beginning March 11, 2020 and ending June 30, 2023. As of June 30, 2020, the Company had a minimum commitment with Patheon for $0.4 million through the fourth quarter of 2020. Subsequent to June 30, 2020, the minimum commitment with Patheon increased to $1.3 million through the third quarter of 2021.

On April 2, 2020, the Company entered into a Supply Agreement with STA Pharmaceutical Hong Kong Limited, a subsidiary of WuXi AppTec, or WuXi STA, or the WuXi STA Agreement. The WuXi STA Agreement includes the terms and conditions under which WuXi STA will manufacture vadadustat API for commercial use. Pursuant to the WuXi STA Agreement, the Company provides rolling forecasts to WuXi STA on a quarterly basis, or the WuXi STA Forecast. The WuXi STA Forecast reflects the Company’s needs for API produced by WuXi STA over a certain number of months, represented as a quantity of API per calendar quarter. The parties have agreed to a volume-based pricing structure under the WuXi STA Agreement. The WuXi STA Agreement has an initial term of four years, beginning April 2, 2020 and ending April 2, 2024. There were no minimum commitments under the WuXi STA Agreement as of June 30, 2020. Subsequent to June 30, 2020, the Company has a minimum commitment with WuXi STA for $44.7 million through the fourth quarter of 2021.

Other Third Party Contracts

Under the Company’s agreement with IQVIA to provide contract research organization services for the PRO₂TECT and INNO₂VATE programs, the total remaining contract costs as of June 30, 2020 were approximately $23.2 million, of which Otsuka reimburses a significant portion back to the Company. The estimated period of substantive performance for the committed work with IQVIA is through the end of 2020. The Company also contracts with various other organizations to conduct research and development activities with remaining contract costs to the Company of approximately $68.1 million at June 30, 2020. The scope of the services under these research and development contracts can be modified and the contracts cancelled by the Company upon written notice. In some instances, the contracts may be cancelled by the third party upon written notice.

Litigation and Related Matters

From time to time, the Company may become subject to legal proceedings and claims which arise in the ordinary course of its business. Consistent with ASC 450, Contingencies, the Company’s policy is to record a liability if a loss in a significant legal dispute is considered probable and an amount can be reasonably estimated. The Company provides disclosure when a loss in excess of any reserve is reasonably possible, and if estimable, the Company discloses the potential loss or range of possible loss. Significant judgment is required to assess the likelihood of various potential outcomes and the quantification of loss in those scenarios. The Company’s estimates change as litigation progresses and new information comes to light. Changes in Company estimates could have a material impact on the Company’s results and financial position. As of June 30, 2020, the Company does not have any significant legal disputes that require a loss liability to be recorded. The Company continually monitors the need for a loss liability for litigation and related matters.

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Net Loss per Share

6 Months Ended

Jun. 30, 2020

Earnings Per Share [Abstract]

Net Loss per Share

Net Loss per Share

The shares in the table below were excluded from the calculation of diluted net loss per share, prior to the use of the treasury stock method, due to their anti-dilutive effect:

	As of June 30,
	2020	2019
Warrant	509,611	509,611
Outstanding stock options	9,632,240	7,779,744
Unvested restricted stock units	6,399,834	1,937,822
Total	16,541,685	10,227,177

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Subsequent Events

6 Months Ended

Jun. 30, 2020

Subsequent Events [Abstract]

Subsequent Events

Subsequent Events

On July 15, 2020, the Company and its collaboration partner MTPC entered into a supply agreement, or the MTPC Supply Agreement. The MTPC Supply Agreement includes the terms and conditions under which the Company will supply vadadustat drug product to MTPC for commercial use in Japan and certain other Asian countries, as contemplated by the MTPC Agreement, which is further described in Note 4 (License, Collaboration and Other Significant Agreements).

Pursuant to the MTPC Supply Agreement, MTPC will provide a rolling forecast, or the MTPC Forecast, to the Company on a quarterly basis. The MTPC Forecast will reflect MTPC’s needs for vadadustat drug product over a certain number of months, represented as a quantity of vadadustat drug product per calendar quarter. MTPC will make an up-front payment for a certain percentage of each batch of vadadustat drug product ordered.

The term of the MTPC Supply Agreement will exist throughout the term of the MTPC Agreement, and the termination provisions of the MTPC Agreement govern termination of the MTPC Supply Agreement. The MTPC Supply Agreement includes customary indemnification, intellectual property protection, confidentiality, remedies, and warranty terms, as well as certain quality requirements.

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Summary of Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2020

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the U.S., or GAAP, for interim financial reporting and as required by Regulation S-X, Rule 10-01. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. Any reference in these notes to applicable guidance is meant to refer to the authoritative U.S. GAAP as found in the Accounting Standards Codification, or ASC, and Accounting Standards Update, or ASU, of the Financial Accounting Standards Board, or FASB.

Consolidation

In the opinion of management, all adjustments, consisting of normal recurring accruals and revisions of estimates, considered necessary for a fair presentation of the unaudited condensed consolidated financial statements have been included. Interim results for the three and six months ended June 30, 2020 are not necessarily indicative of the results that may be expected for the fiscal year ending December 31, 2020 or any other future period.The accompanying unaudited condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

New Accounting Pronouncements

New Accounting Pronouncements – Recently Adopted

In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which requires that financial assets measured at amortized cost be presented at the net amount expected to be collected. Previously, U.S. GAAP delayed recognition of the full amount of credit losses until the loss was probable of occurring. Under this ASU, the income statement will reflect an entity’s current estimate of all expected credit losses. The Company adopted this new standard on January 1, 2020 using the modified retrospective approach, which requires a cumulative-effect adjustment, if any, to the opening balance of retained earnings to be recognized on the date of adoption with prior periods not restated. The cumulative-effect adjustment recorded on January 1, 2020, is not material. Please see the description of the Company’s “Credit Losses” accounting policy in the “Significant Accounting Policies” section below.

In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement, which modifies the disclosure requirements for fair value measurements. The Company adopted this new standard on January 1, 2020 using the prospective approach for amendments applicable to the Company. The adoption of this standard did not have a material impact on the Company’s unaudited condensed consolidated financial statements and related disclosures.

In August 2018, the FASB issued ASU 2018-15, Intangible-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That is a Service Contract. This standard clarifies the accounting for implementation costs in cloud computing arrangements. This standard became effective for us on January 1, 2020, and was adopted on a prospective basis. The adoption of this standard did not have a material impact to the Company’s unaudited condensed consolidated financial statements and disclosures.

In November 2018, the FASB issued ASU 2018-18, Collaborative Arrangements (Topic 808): Clarifying the Interaction between Topic 808 and Topic 606. This standard makes targeted improvements for collaborative arrangements as follows:

•Clarifies that certain transactions between collaborative arrangement participants should be accounted for as revenue under ASC 606, Revenue from Contracts with Customers, when the collaborative arrangement participant is a customer in the context of a unit of account. In those situations, all the guidance in ASC 606 should be applied, including recognition, measurement, presentation and disclosure requirements;

•Adds unit-of-account guidance to ASC 808, Collaborative Arrangements, to align with the guidance in ASC 606 (that is, a distinct good or service) when an entity is assessing whether the collaborative arrangement or a part of the arrangement is within the scope of ASC 606; and

•Precludes a company from presenting transactions with collaborative arrangement participants that are not directly related to sales to third parties with revenue recognized under ASC 606 if the collaborative arrangement participant is not a customer.

This standard became effective for the Company on January 1, 2020, and did not have a material impact on the Company’s unaudited condensed consolidated financial statements and related disclosures.

New Accounting Pronouncements – Not Yet Adopted

In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. This ASU is effective for fiscal years beginning after December 15, 2020, including interim periods therein, and is applicable to the Company in fiscal year 2021. Early adoption is permitted. ASU 2019-12 requires certain amendments to be applied using a modified retrospective approach, which requires a cumulative-effect adjustment to retained earnings as of the beginning of the fiscal year of adoption, while other amendments should be applied on a prospective basis. The Company does not expect that the adoption of this standard will have a material impact on the Company’s unaudited condensed consolidated financial statements and related disclosures.

Derivative Financial Instruments

Derivative Financial InstrumentsThe Company accounts for warrants and other derivative financial instruments as either equity or liabilities in accordance with ASC Topic 815, Derivatives and Hedging, or ASC 815, based upon the characteristics and provisions of each instrument. Warrants classified as equity are recorded at fair value as of the date of issuance on the Company’s unaudited condensed consolidated balance sheets and no further adjustments to their valuation are made. Warrants classified as derivative liabilities and other derivative financial instruments that require separate accounting as liabilities are recorded on the Company’s unaudited condensed consolidated balance sheets at their fair value on the date of issuance and will be revalued on each subsequent balance sheet date until such instruments are exercised or expire, with any changes in the fair value between reporting periods recorded as other income or expense. The warrant issued by the Company in connection with the Janssen Pharmaceutica NV Research and License Agreement, the Janssen Agreement, is classified as equity in the Company’s unaudited condensed consolidated balance sheet. (See Note 12). The derivative liability recorded in connection with the Company’s Loan Agreement with Pharmakon is classified as a liability in the Company’s unaudited condensed consolidated balance sheet.

Use of Estimates

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results may differ from those estimates. Management considers many factors in selecting appropriate financial accounting policies and controls, and in developing the estimates and assumptions that are used in the preparation of these financial statements. Management must apply significant judgment in this process. In addition, other factors may affect estimates, including expected business and operational changes, sensitivity and volatility associated with the assumptions used in developing estimates, and whether historical trends are expected to be representative of future trends. The estimation process often may yield a range of potentially reasonable estimates of the ultimate future outcomes, and management must select an amount that falls within that range of reasonable estimates. Estimates are used in the following areas, among others: prepaid and accrued research and development expense, operating lease assets and liabilities, derivative liabilities, other non-current liabilities, stock-based compensation expense, product and collaboration revenues including various rebates and reserves related to product sales, inventories, income taxes, intangible assets and goodwill. The Company has made estimates of the impact of COVID-19 within the unaudited condensed consolidated financial statements and there may be changes to those estimates in future periods including changes to sales, payer mix, reserves and allowances, intangible assets and goodwill. While the COVID-19 pandemic has not had a material adverse impact on the Company’s financial condition, the future impacts of the pandemic and any resulting economic impact is largely unknown and rapidly evolving.

Credit Losses

Credit Losses

Available for sale debt securities. Management determines the appropriate classification of securities at the time of purchase and reevaluates such designation as of each balance sheet date. The Company classifies all securities as available for sale and includes them in current assets as they are intended to fund current operations. The Company's investment portfolio at any point in time contains investments in money market mutual funds, U.S. government debt securities, certificates of deposit and corporate debt securities. The Company segments its portfolio based on the underlying risk profiles of the securities and have a zero loss expectation for money market mutual funds, U.S. government debt securities and certificates of deposit. The Company regularly reviews the securities in an unrealized loss position and evaluates the current expected credit loss by considering factors such as historical experience, market data, issuer-specific factors, and current economic conditions. Factors considered also include whether a decline in fair value below the amortized cost basis is due to credit-related factors or noncredit-related factors, the financial condition and near-term prospects of the issuer, and our intent and ability to hold the investment to allow for an anticipated recovery in fair value. Any unrealized loss that is not credit related is recognized in other comprehensive (loss) income in the unaudited condensed consolidated statements of operations. A credit-related unrealized loss is recognized as an allowance on the unaudited condensed consolidated balance sheets with a corresponding adjustment to earnings in the unaudited condensed consolidated statements of operations.

Cash, Cash Equivalents, and Restricted Cash

Cash, Cash Equivalents, and Restricted Cash

Cash and cash equivalents consist of all cash on hand, deposits and funds invested in available for sale securities with original maturities of three months or less at the time of purchase. Cash equivalents are reported at fair value. At June 30, 2020, the Company’s cash is primarily in money market funds. The Company may maintain balances with its banks in excess of federally insured limits.

Restricted cash represents amounts required for security deposits under the Company’s office and lab space lease agreements and, at June 30, 2019, cash balances held as collateral for the Company’s employee credit card program. Restricted cash is included in “prepaid expenses and other current assets” and “other assets” in the unaudited condensed consolidated balance sheets.

Property and Equipment

Property and Equipment

Property and equipment is stated at cost, less accumulated depreciation. Assets under capital lease are included in property and equipment. Property and equipment is depreciated using the straight-line method over the estimated useful lives of the assets, generally three years to seven years. Such costs are periodically reviewed for recoverability when impairment indicators are present. Such indicators include, among other factors, operating losses, unused capacity, market value declines and technological obsolescence. Recorded values of asset groups of equipment that are not expected to be recovered through undiscounted future net cash flows are written down to current fair value, which generally is determined from estimated discounted future net cash flows (assets held for use) or net realizable value (assets held for sale).

Inventory

Inventory

The Company values its inventories at the lower-of-cost or net realizable value. The Company determines the cost of its inventories, which includes amounts related to materials and manufacturing overhead, on a first-in, first-out basis. The

Company classifies its inventory costs as long-term, in other assets in its unaudited condensed consolidated balance sheets, when it expects to utilize the inventory beyond their normal operating cycle.

Prior to the regulatory approval of its product candidates, the Company incurs expenses for the manufacture of material that could potentially be available to support the commercial launch of its products. Until the first reporting period when regulatory approval has been received or is otherwise considered probable and the future economic benefit is expected to be realized, the Company records all such costs as research and development expense. Inventory used in clinical trials is also expensed as research and development expense, when selected for such use. Inventory that can be used in either the production of clinical or commercial products is expensed as research and development costs when identified for use in a clinical manufacturing campaign.

The Company performs an assessment of the recoverability of capitalized inventory during each reporting period, and writes down any excess and obsolete inventory to its net realizable value in the period in which the impairment is first identified. Such impairment charges, should they occur, are recorded as a component of cost of product sales in the unaudited condensed consolidated statements of operations and comprehensive loss. The determination of whether inventory costs will be realizable requires the use of estimates by management. If actual market conditions are less favorable than projected by management, additional write-downs of inventory may be required. Additionally, the Company’s product is subject to strict quality control and monitoring that it performs throughout the manufacturing process. The Company will record a charge, in the event that certain batches or units of product do not meet quality specifications, to cost of product sales to write-down any unmarketable inventory to its estimated net realizable value. In all cases, product inventory is carried at the lower of cost or its estimated net realizable value.

Debt

Debt

The Company performs an assessment of all embedded features of a debt instrument to determine if (1) such features should be bifurcated and separately accounted for, and (2) if bifurcation requirements are met, whether such features should be classified and accounted for as equity or liability instruments. If the embedded feature meets the requirements to be bifurcated and accounted for as a liability, the fair value of the embedded feature is measured initially, included as a liability on the unaudited condensed consolidated balance sheet, and re-measured to fair value at each reporting period. Any changes in fair value are recorded in the unaudited condensed consolidated statement of operations. The Company monitors, on an ongoing basis, whether events or circumstances could give rise to a change in the classification of embedded features.

Revenue Recognition

Revenue Recognition

The Company generates revenues primarily from sales of Auryxia, see Note 3, and from its collaborations with MTPC and Otsuka, see Note 4. The Company recognizes revenue in accordance with ASC 606, which applies to all contracts with customers, except for contracts that are within the scope of other standards. Under ASC 606, the Company recognizes revenue when its customer obtains control of promised goods or services, in an amount that reflects the consideration which the entity expects to receive in exchange for those goods or services. To determine revenue recognition for arrangements that the Company determines are within the scope of ASC 606, it performs the following five steps:

(i)identify the contract(s) with a customer;

(ii)identify the performance obligations in the contract;

(iii)determine the transaction price;

(iv)allocate the transaction price to the performance obligations in the contract; and

(v)recognize revenue when (or as) the entity satisfies a performance obligation.  

The Company only applies the five-step model to contracts when it is probable that the entity will collect the consideration it is entitled to in exchange for the goods or services it transfers to the customer. At contract inception, once the contract is determined to be within the scope of ASC 606, the Company assesses the goods or services promised within each contract and determines those that are performance obligations, and assesses whether each promised good or service is distinct. The Company then recognizes as revenue the amount of the transaction price that is allocated to the respective performance obligation when (or as) the performance obligation is satisfied. 

The Company does not include a financing component to its estimated transaction price at contract inception unless it estimates that certain performance obligations will not be satisfied within one year. Additionally, the Company recognizes the incremental costs of obtaining a contract as an expense when incurred if the amortization period of the asset that the Company otherwise would have recognized is one year or less.

Product Revenue, Net

The Company sells Auryxia in the United States, or U.S., primarily to wholesale distributors as well as certain specialty pharmacy providers, collectively, Customers. These Customers resell the Company’s product to health care providers and patients. In addition to distribution agreements with Customers, the Company enters into arrangements with health care providers and payors that provide for government-mandated and/or privately-negotiated rebates, chargebacks, and discounts with respect to the purchase of the Company’s product.

The Company recognizes revenue on product sales when the Customer obtains control of the Company’s product, which occurs at a point in time, typically upon delivery to the Customer. The Company expenses incremental costs of obtaining a contract as and when incurred if the expected amortization period of the asset that it would have recognized is one year or less.

Reserves for Variable Consideration

Revenue from product sales is recorded at the net sales price (transaction price), which includes estimates of variable consideration for which reserves are established and which result from discounts, returns, chargebacks, rebates, co-pay assistance and other allowances that are offered within contracts between the Company and its Customers, health care providers, payors and other indirect customers relating to the Company’s sales of its products. These reserves are based on the amounts earned or to be claimed on the related sales and are classified as reductions of accounts receivable (if the amount will be credited to the Customer) or as a current liability (if the amount is payable to a Customer or a party other than a Customer). When appropriate, these estimates take into consideration a range of possible outcomes which are probability-weighted in accordance with the expected value method in ASC 606 for relevant factors such as the Company’s historical experience, current contractual and statutory requirements, specific known market events and trends, industry data, and forecasted customer buying and payment patterns. Overall, these reserves reflect the Company’s best estimates of the amount of consideration to which it is entitled based on the terms of the respective underlying contracts.

The amount of variable consideration that is included in the transaction price may be constrained, and is included in the net sales price only to the extent that it is probable that a significant reversal in the amount of the cumulative revenue recognized will not occur in a future period.  Actual amounts of consideration ultimately received may differ from the Company’s estimates.  If actual results in the future vary from the Company’s estimates, the Company will adjust these estimates, which would affect net product revenue and earnings in the period such variances become known.

Trade Discounts and Allowances: The Company generally provides Customers with discounts that include incentive fees that are explicitly stated in the Company’s contracts and are recorded as a reduction of revenue in the period the related product revenue is recognized. In addition, the Company compensates (through trade discounts and allowances) its Customers for sales order management, data, and distribution services. However, the Company has determined such services received to date are not distinct from the Company’s sale of products to the Customer and, therefore, these payments have been recorded as a reduction of revenue within the unaudited condensed consolidated statement of operations and comprehensive loss through June 30, 2020. The Company records a corresponding reduction of accounts receivable (if the trade discount and/or allowance will be credited to the Customer) or an increase in accrued expense (if the trade discount and/or allowance is payable to a Customer) on the unaudited condensed consolidated balance sheets.

Product Returns: Consistent with industry practice, the Company generally offers Customers a limited right of return which allows for the product to be returned when the product expiry is within an allowable window, when the quantity delivered is different than quantity ordered, the product is damaged in transit prior to receipt by the customer, or is subject to a recall. This right of return generally lapses once the product is provided to a patient. The Company estimates the amount of its product sales that may be returned for credit by its Customers and records this estimate as a reduction of revenue in the period the related product revenue is recognized. The Company currently estimates product return reserve using available industry data and its own historical sales information, including its visibility into the inventory remaining in the distribution channel.

Provider Chargebacks and Discounts: Chargebacks for fees and discounts to providers represent the estimated obligations resulting from contractual commitments to sell products to qualified healthcare providers at prices lower than the list prices charged to Customers who directly purchase the product from the Company. Customers charge the Company for the difference between what they pay for the product and the ultimate selling price to the qualified healthcare providers. These reserves are established in the same period that the related revenue is recognized, resulting in a reduction of product revenue and accounts receivable. Chargeback amounts are generally determined at the time of resale to the qualified healthcare provider by Customers, and the Company generally issues credits for such amounts within a few weeks of the Customer’s resale of the product. Reserves for chargebacks consist of credits that the Company expects to issue for units that remain in the distribution

channel at each reporting period end that the Company expects will be sold to qualified healthcare providers, and chargebacks that Customers have claimed but for which the Company has not yet issued a credit.

Commercial and Medicare Part D Rebates: The Company contracts with various commercial payor organizations, primarily health insurance companies and pharmacy benefit managers, for the payment of rebates with respect to utilization of its products. The Company estimates the rebates for commercial and Medicare Part D payors based upon (i) its contracts with the payors and (ii) information obtained from its Customers and other third parties regarding the payor mix for Auryxia. The Company estimates these rebates and records such estimates in the same period the related revenue is recognized, resulting in a reduction of product revenue and the establishment of a current liability.

Other Government Rebates: The Company is subject to discount obligations under state Medicaid programs and other government programs. The Company estimates its Medicaid and other government programs rebates based upon a range of possible outcomes that are probability-weighted for the estimated payor mix. These reserves are recorded in the same period the related revenue is recognized, resulting in a reduction of product revenue and the establishment of a current liability which is included in accrued expenses and other current liabilities on the unaudited condensed consolidated balance sheets. For Medicare, the Company also estimates the number of patients in the prescription drug coverage gap for whom the Company will owe an additional liability under the Medicare Part D program. The Company’s liability for these rebates consists of invoices received for claims from prior quarters that have not been paid or for which an invoice has not yet been received, estimates of claims for the current quarter, and estimated future claims that will be made for product that has been recognized as revenue, but which remains in the distribution channel at the end of each reporting period.

Other Incentives:  Other incentives that the Company offers include voluntary patient assistance programs such as the Company’s co-pay assistance program, which are intended to provide financial assistance to qualified commercially insured patients with prescription drug co-payments required by payors. The calculation of the accrual for co-pay assistance is based on actual claims processed during a given period, as well as historical utilization data to estimate the amount the Company expects to receive associated with product that has been recognized as revenue, but remains in in the distribution channel at the end of each reporting period.

Collaboration Revenues

The Company enters into out-license and collaboration agreements which are within the scope of ASC 606, under which it licenses certain rights to its product candidates to third parties. The terms of these arrangements typically include payment to the Company of one or more of the following: non-refundable, up-front license fees; development, regulatory, and commercial milestone payments; payments for manufacturing supply services the Company provides through its contract manufacturers; and royalties on net sales of licensed products. Each of these payments may result in license, collaboration and other revenue, except for revenues from royalties on net sales of licensed products, which are classified as royalty revenues.

In determining the appropriate amount of revenue to be recognized as the Company fulfills its obligations under each of its agreements, the Company implements the five-step model noted above. As part of the accounting for these arrangements, the Company must develop assumptions that require judgment to determine whether the individual promises should be accounted for as separate performance obligations or as a combined performance obligation, and to determine the stand-alone selling price for each performance obligation identified in the contract. A deliverable represents a separate performance obligation if both of the following criteria are met: (i) the customer can benefit from the good or service either on its own or together with other resources that are readily available to the customer, and (ii) the entity’s promise to transfer the good or service to the customer is separately identifiable from other promises in the contract. The Company uses key assumptions to determine the stand-alone selling price, which may include forecasted revenues, development timelines, reimbursement rates for personnel costs, discount rates, and probabilities of technical and regulatory success. With regard to the MTPC and Otsuka collaboration agreements, the Company recognizes revenue related to amounts allocated to the identified performance obligation on a proportional performance basis as the underlying services are performed.

Licenses of Intellectual Property

If the license to the Company’s intellectual property is determined to be distinct from the other performance obligations identified in an out-license and collaboration arrangement, the Company recognizes revenue from non-refundable, up-front fees allocated to the license when the license is transferred to the customer and the customer is able to use and benefit from the license. For licenses that are bundled with other promises, the Company utilizes judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress for purposes of recognizing revenue from non-refundable, up-front fees. The Company evaluates the measure of progress each reporting period and, if necessary, adjust the measure of performance and related revenue recognition.

Milestone Payments

At the inception of each arrangement that includes development milestone payments, the Company evaluates whether the milestones are considered probable of being reached and estimates the amount to be included in the transaction price using the most likely amount method. The Company evaluates factors such as the scientific, clinical, regulatory, commercial, and other risks that must be overcome to assess the milestone as probable of being achieved. There is considerable judgment involved in determining whether a milestone is probable of being reached at each specific reporting period. Milestone payments that are not within the control of the Company or the customer, such as regulatory approvals, are not considered probable of being achieved until those approvals are received. If it is probable that a significant revenue reversal would not occur, the associated milestone value is included in the transaction price. The transaction price is then allocated to each performance obligation on a relative stand-alone selling price basis, for which the Company recognizes revenues as, or when, the performance obligations under the contract are satisfied. At the end of each subsequent reporting period, the Company re-evaluates the probability of achievement of such development milestones and any related constraint, and if necessary, adjusts its estimate of the overall transaction price. Any such adjustments are recorded on a cumulative catch-up basis, which would affect collaboration revenue in the period of adjustment.  

Manufacturing Supply Services

Arrangements that include a promise for future supply of drug substance or drug product for either clinical development or commercial supply at the licensee’s discretion are generally considered as options. The Company assesses if these options provide a material right to the licensee and if so, they are accounted for as separate performance obligations. If the Company is entitled to additional payments when the licensee exercises these options, any additional payments are recorded in license, collaboration and other revenues when the licensee obtains control of the goods, which is upon delivery.

Royalties

The Company will recognize sales-based royalties, including milestone payments based on the level of sales, at the later of (i) when the related sales occur, or (ii) when the performance obligation to which some or all of the royalty has been allocated has been satisfied (or partially satisfied). The Company receives royalty payments from JT and Torii, based on net sales of Riona in Japan.

Collaborative Arrangements

The Company records the elements of its collaboration agreements that represent joint operating activities in accordance with ASC Topic 808, Collaborative Arrangements (ASC 808). Accordingly, the elements of the collaboration agreements that represent activities in which both parties are active participants and to which both parties are exposed to the significant risks and rewards that are dependent on the commercial success of the activities are recorded as collaborative arrangements. The Company considers the guidance in ASC 606-10-15, Revenue from Contracts with Customers – Scope and Scope Exceptions, in determining the appropriate treatment for the transactions between the Company and its collaborative partner and the transactions between the Company and third parties. Generally, the classification of transactions under the collaborative arrangements is determined based on the nature and contractual terms of the arrangement along with the nature of the operations of the participants. Therefore, the Company recognizes its allocation of the shared costs incurred with respect to the jointly conducted medical affairs and commercialization and non-promotional activities under the Otsuka U.S. Agreement, as defined below in Note 4, as a component of the related expense in the period incurred. During the three months ended June 30, 2020 and 2019, the Company incurred approximately $0.2 million and $0.3 million, respectively, of costs related to the cost-sharing provisions of the Otsuka U.S. Agreement, of which approximately $0.1 million are reimbursable by Otsuka and recorded as a reduction to research and development expense during each of the three months ended June 30, 2020 and 2019. During the three months ended June 30, 2020 and 2019, Otsuka incurred approximately $0.4 million and $0.1 million, respectively, of costs related to the cost-sharing provisions of the Otsuka U.S. Agreement, of which approximately $0.2 million and $0.1 million are reimbursable by the Company and recorded as an increase to research and development expense during the three months ended June 30, 2020 and 2019, respectively. To the extent product revenue is generated from the collaboration, the Company recognizes its share of the net sales on a gross basis if it is deemed to be the principal in the transactions with customers, or on a net basis if it is instead deemed to be the agent in the transactions with customers, consistent with the guidance in ASC 606.

Intangible Assets

Intangible Assets

The Company maintains a definite-lived intangible asset related to developed product rights for Auryxia, which was acquired on December 12, 2018 as part of the Merger.

Intangible assets are initially recorded at fair value and stated net of accumulated amortization and impairments. The Company amortizes its intangible assets that have finite lives using either the straight-line method, or if reliably determinable, based on the pattern in which the economic benefit of the asset is expected to be utilized. Amortization for the Company’s intangible asset is recorded over its estimated useful life, which as of June 30, 2020 is estimated to be seven years.

The Company reviews intangible assets subject to amortization to determine if any adverse conditions exist or a change in circumstances has occurred that would indicate impairment or a change in the remaining useful life. If an impairment indicator exists, the Company performs a recoverability test by comparing the sum of the estimated undiscounted cash flows of the intangible asset group to its carrying value on the unaudited condensed consolidated balance sheet. If the carrying value of the intangible asset group exceeds the undiscounted cash flows used in the recoverability test, the Company will write the carrying value of the intangible asset group down to the fair value in the period identified. The Company calculates the fair value of the intangible asset group as the present value of estimated future cash flows expected to be generated from the intangible asset group using a risk-adjusted discount rate. In determining estimated future cash flows associated with its intangible asset group, the Company uses market participant assumptions pursuant to ASC Topic 820, Fair Value Measurements and Disclosures (ASC 820). During the second quarter of 2020, the Company identified indicators of impairment related to the developed product rights for Auryxia and recorded an impairment charge of $115.5 million (see Note 9 for additional information).

Goodwill

Goodwill

The Company allocates any excess purchase price over the fair value of the net tangible and intangible assets acquired in a business combination to goodwill. Goodwill is evaluated for impairment on an annual basis as of October 1, and more frequently if indicators are present or changes in circumstances suggest that impairment may exist.

The Company compares the fair value of its reporting unit to its carrying value. If the carrying value of the net assets assigned to the reporting unit exceeds the fair value of its reporting unit, the Company would record an impairment loss equal to the difference. As described above, the Company operates in one operating segment which the Company considers to be the only reporting unit.

Fair Value of Financial Instruments

Fair Value of Financial Instruments

The Company is required to disclose information on all assets and liabilities reported at fair value that enables an assessment of the inputs used in determining the reported fair values. ASC 820 establishes a hierarchy of inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the observable inputs be used when available.

Observable inputs are inputs that market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions about the inputs that market participants would use in pricing the asset or liability, and are developed based on the best information available in the circumstances. The fair value hierarchy applies only to the valuation inputs used in determining the reported fair value of the investments, and is not a measure of the investment credit quality. The three levels of the fair value hierarchy are described below:

•Level 1 – Valuations based on unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date.

•Level 2 – Valuations based on quoted prices for similar assets or liabilities in markets that are not active, or for which all significant inputs are observable, either directly or indirectly.

•Level 3 – Valuations that require inputs that reflect the Company’s own assumptions that are both significant to the fair value measurement and unobservable.

To the extent that valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires more judgment. Accordingly, the degree of judgment exercised by the Company in determining fair value is greatest for instruments categorized in Level 3. A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement.

Items measured at fair value on a recurring basis include available for sale securities and derivative liabilities (see Note 7). The carrying amounts of prepaid expenses and other current assets, accounts payable and accrued expenses approximate their fair values due to their short-term maturities.

Items measured at fair value on a nonrecurring basis include property and equipment, intangible assets and goodwill. The Company remeasures the fair value of these assets upon the occurrence of certain events. There were no such remeasurements

to property and equipment during either of the three and six months ended June 30, 2020 and 2019. During the three months ended June 30, 2020, the Company identified indicators of impairment related to the developed product rights for Auryxia, an intangible asset measured using Level 3 inputs, and recorded an impairment charge of $115.5 million (see Note 9 for additional information). There were no other impairments to assets measured using Level 3 inputs during either of the three and six months ended June 30, 2020 and no impairments to assets measured using Level 3 inputs during either of the three and six months ended June 30, 2019.

The Company’s other financial instruments mainly consists of debt (see Note 11).

Net Loss per Share

Net Loss per Share

Basic net loss per share is calculated by dividing net loss by the weighted-average shares outstanding during the period, without consideration for common stock equivalents. Diluted net loss per share is calculated by adjusting weighted-average shares outstanding for the dilutive effect of common stock equivalents outstanding for the period, determined using the treasury-stock method. For purposes of the diluted net loss per share calculation, preferred stock, stock options, warrants, restricted stock and RSUs are considered to be common stock equivalents, but have been excluded from the calculation of diluted net loss per share, as their effect would be anti-dilutive for all periods presented. Therefore, basic and diluted net loss per share were the same for all periods presented. Diluted net income per share is calculated by dividing the net income by the weighted-average common shares outstanding for the period, including any dilutive effect from outstanding options, warrants, restricted stock and RSUs using the treasury stock method.

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Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2020

Accounting Policies [Abstract]

Reconciliation of Cash, Cash Equivalents, and Restricted Cash

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported in the unaudited condensed consolidated balance sheet that sum to the total of the amounts reported in the unaudited condensed consolidated statement of cash flows (in thousands):

	June 30, 2020		June 30, 2019
Cash and cash equivalents	$	245,406	$	87,212
Prepaid expenses and other current assets	395		363
Other assets	2,039		2,092
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows	$	247,840	$	89,667

Summary of Property and Equipment and Related Accumulated Depreciation

The following is the summary of property and equipment and related accumulated depreciation as of June 30, 2020 and December 31, 2019.

	Useful Life			June 30, 2020		December 31, 2019
				(in thousands)
Computer equipment and software		3		$	1,010	$	1,010
Furniture and fixtures	5	-	7	2,131		2,086
Equipment		7		2,451		2,451
Leasehold improvements	Shorter of the useful life or remaining lease term (10 years)			8,497		8,497
				14,089		14,044
Less accumulated depreciation				(4,709)		(3,664)
Net property and equipment				$	9,380	$	10,380

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Product Revenue and Reserves for Variable Consideration (Tables)

6 Months Ended

Jun. 30, 2020

Revenue from Contract with Customer [Abstract]

Summary of Product Revenue Allowance and Reserve Categories

The following table summarizes activity in each of the product revenue allowance and reserve categories for the six months ended June 30, 2020 and 2019 (in thousands):

	Chargebacks and Discounts		Rebates, Fees and other Deductions		Returns		Total
Balance at December 31, 2019	$	738	$	30,552	$	253	$	31,543
Current provisions related to sales in current year	5,055		66,348		2,684		74,087
Adjustments related to prior year sales	(31)		638		44		651
Credits/payments made	(4,995)		(54,945)		(2,237)		(62,177)
Balance at June 30, 2020	$	767	$	42,593	$	744	$	44,104
Balance at December 31, 2018	$	516	$	22,861	$	360	$	23,737
Current provisions related to sales in current year	3,306		44,708		1,596		49,610
Adjustments related to prior year sales	(22)		479		—		457
Credits/payments made	(3,320)		(46,131)		(1,663)		(51,114)
Balance at June 30, 2019	$	480	$	21,917	$	293	$	22,690

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License, Collaboration and Other Significant Agreements (Tables)

6 Months Ended

Jun. 30, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Revenues Recognized from License, Collaboration and Other Significant Agreements

During the three and six months ended June 30, 2020 and 2019, the Company recognized the following revenues from its license, collaboration and other significant agreements and had the following deferred revenue balances as of June 30, 2020:

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
License, Collaboration and Other Revenue:	(in thousands)				(in thousands)
MTPC Agreement	$	15,000	$	10,000	$	15,000	$	10,000
Otsuka U.S. Agreement	25,888		37,519		$	64,465	$	63,742
Otsuka International Agreement	12,832		22,467		32,202		44,423
Total Proportional Performance Revenue	$	53,720	$	69,986	$	111,667	$	118,165
JT and Torii	1,740		1,491		2,866		2,719
MTPC Other Revenue	3,986		237		4,182		385
Total License, Collaboration and Other Revenue	$	59,446	$	71,714	$	118,715	$	121,269

Deferred Revenues Balance

During the three and six months ended June 30, 2020 and 2019, the Company recognized the following revenues from its license, collaboration and other significant agreements and had the following deferred revenue balances as of June 30, 2020:

	June 30, 2020
	Short-Term		Long-Term		Total
Deferred Revenue:	(in thousands)
Otsuka U.S. Agreement	$	15,378	$	20,557	$	35,935
Otsuka International Agreement	8,151		9,306		17,457
Vifor Agreement	—		4,679		4,679
Total	$	23,529	$	34,542	$	58,071

Schedule of Changes in Contract Assets and Liabilities

The following table presents changes in the Company’s contract assets and liabilities during the six months ended June 30, 2020 and 2019 (in thousands):

Six Months Ended June 30, 2020	Balance at Beginning of Period		Additions		Deductions		Balance at End of Period
Contract assets:
Accounts receivable(1)	$	15,822	$	118,368	$	(115,382)	$	18,808
Prepaid expenses and other current assets	$	—	$	756	$	—	$	756
Contract liabilities:
Deferred revenue	$	72,950	$	90,471	$	(105,350)	$	58,071
Accounts payable	$	—	$	5,651	$	—	$	5,651
Accrued expenses and other current liabilities	$	—	$	615	$	(615)	$	—
Six Months Ended June 30, 2019
Contract assets:
Other current assets	$	—	$	10,000	$	—	$	10,000
Accounts receivable(1)	$	1,587	$	81,830	$	(75,260)	$	8,157
Contract liabilities:
Deferred revenue	$	112,689	$	91,351	$	(108,166)	$	95,874
Accounts payable	$	13,492	$	—	$	(13,492)	$	—

(1)Excludes accounts receivable from other services related to clinical and regulatory activities performed by the Company on behalf of MTPC that are not included in the performance obligations identified under the MTPC Agreement as of June 30, 2020 and 2019 and December 31, 2019 and 2018. Also excludes accounts receivable related to amounts due to the Company from product sales which are included in the accompanying unaudited condensed consolidated balance sheet as of June 30, 2020 and December 31, 2019.

Schedule of Revenue Recognized Resulting from Changes in Contract Asset and Contract Liability

During the three and six months ended June 30, 2020 and 2019, the Company recognized the following revenues as a result of changes in the contract asset and contract liability balances in the respective periods (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
Revenue Recognized in the Period from:	2020		2019		2020		2019
Amounts included in deferred revenue at the beginning of the period	$	16,964	$	23,277	$	22,186	$	40,316
Performance obligations satisfied in previous periods	$	3,555	$	—	$	3,263	$	1,254

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Business Combination (Tables)

6 Months Ended

Jun. 30, 2020

Business Combinations [Abstract]

Summary of Total Fair Value Consideration

Pursuant to the terms and conditions of the Merger Agreement, each outstanding Keryx Share, excluding the Baupost Additional Shares, as defined below, and each outstanding Keryx equity award were converted into Akebia Shares and substantially similar Akebia equity awards, respectively, at an exchange ratio of 0.37433 for a total fair value consideration of $527.8 million consisting of the following (in thousands):

Fair value of 57,773,090 Akebia Shares	$	516,492
Fair value of 602,752 Akebia RSUs	304
Fair value of 3,967,290 Akebia stock options	10,958
Total consideration	$	527,754

Summary of Purchase Price of Identifiable Assets Acquired and Liabilities Assumed

The Company allocated the $527.8 million purchase price to the identifiable assets acquired and liabilities assumed in the business combination at their fair values as of December 12, 2018 as follows (in thousands):

Cash and cash equivalents	$	5,257
Inventory	235,597
Trade accounts receivable, net	15,834
Prepaid expenses and other current assets	8,399
Goodwill	55,053
Intangible assets:
Developed product rights for Auryxia	329,130
Other intangible assets	545
Property and equipment, net	3,646
Other assets	14,441
Accounts payable	(17,570)
Accrued expenses	(42,972)
Deferred tax liability	(35,096)
Debt	(15,000)
Fair value of unfavorable executory contract	(29,510)
Total purchase price	$	527,754

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Available For Sale Securities (Tables)

6 Months Ended

Jun. 30, 2020

Investments, Debt and Equity Securities [Abstract]

Summary of Available for Sale Securities at Fair Value

Cash, cash equivalents, and available for sale securities at June 30, 2020 and December 31, 2019 consisted of the following:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
	(in thousands)
June 30, 2020
Cash and cash equivalents	$	245,406	$	—	$	—	$	245,406
Available for sale securities:
U.S. government debt securities	$	49,952	$	—	$	(9)	$	49,943
Total available for sale securities	$	49,952	$	—	$	(9)	$	49,943
Total cash, cash equivalents, and available for sale securities	$	295,358	$	—	$	(9)	$	295,349

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
	(in thousands)
December 31, 2019
Cash and cash equivalents	$	147,449	$	—	$	—	$	147,449
Available for sale securities:
Certificates of deposit	$	245	$	—	$	—	$	245
Total available for sale securities	$	245	$	—	$	—	$	245
Total cash, cash equivalents, and available for sale securities	$	147,694	$	—	$	—	$	147,694

Estimated Fair Value of Available for Sale Securities by Contractual Maturity

The estimated fair value of the Company’s available for sale securities balance at June 30, 2020, by contractual maturity, was as follows (in thousands):

Due in one year or less	$	49,943
Due after one year	—
Total available for sale securities	$	49,943

Available for Sale Securities in Continuous Unrealized Loss Position

The following table summarizes the Company’s available for sale securities that were in a continuous unrealized loss position, but were not deemed to be other-than temporarily impaired, as of June 30, 2020:

	Unrealized Loss for Less Than 12 Months				Unrealized Loss for 12 Months or More				Total
	Gross Unrealized Losses		Estimated Fair Value		Gross Unrealized Losses		Estimated Fair Value		Gross Unrealized Losses		Estimated Fair Value
	(in thousands)
June 30, 2020
Available for sale securities:
U.S. government debt securities	$	(9)	$	49,943	$	—	$	—	$	(9)	$	49,943
Total	$	(9)	$	49,943	$	—	$	—	$	(9)	$	49,943

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Fair Value of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2020

Fair Value Disclosures [Abstract]

Assets Measured or Disclosed at Fair Value on Recurring Basis

Assets measured or disclosed at fair value on a recurring basis as of June 30, 2020 and December 31, 2019 are summarized below:

	Fair Value Measurements Using
	Level 1		Level 2		Level 3		Total
	(in thousands)
June 30, 2020
Assets:
Cash and cash equivalents	$	245,406	$	—	$	—	$	245,406
U.S. government debt securities	—		49,943		—		49,943
	$	245,406	$	49,943	$	—	$	295,349
Liabilities:
Derivative liability	$	—	$	—	$	1,890	$	1,890
	$	—	$	—	$	1,890	$	1,890

	Fair Value Measurements Using
	Level 1		Level 2		Level 3		Total
	(in thousands)
December 31, 2019
Assets:
Cash and cash equivalents	$	147,449	$	—	$	—	$	147,449
Certificates of deposit	—		245		—		245
	$	147,449	$	245	$	—	$	147,694
Liabilities:
Derivative liability	$	—	$	—	$	1,650	$	1,650
	$	—	$	—	$	1,650	$	1,650

Schedule of Fair Value Derivative Liability

The following table provides a roll-forward of the fair value of the derivative liability (in thousands):

Balance at December 31, 2019	$	1,650
Change in fair value of derivative liability, recorded as other expense	90
Balance at Balance at March 31, 2020	$	1,740
Change in fair value of derivative liability, recorded as other expense	150
Balance at June 30, 2020	$	1,890

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Inventory (Tables)

6 Months Ended

Jun. 30, 2020

Inventory Disclosure [Abstract]

Components of Inventory

The components of inventory, inclusive of step-up as a result of bringing Keryx’s inventory onto Akebia’s books at fair value in connection with the Merger, are summarized as follows:

	June 30, 2020		December 31, 2019
	(in thousands)
Raw materials	$	2,078	$	2,278
Work in process	101,641		137,858
Finished goods	38,636		42,096
Total inventory	$	142,355	$	182,232

Long-term inventory, which primarily consists of raw materials and work in process, is included in other assets in the Company’s unaudited condensed consolidated balance sheets.

	June 30, 2020		December 31, 2019
	(in thousands)
Balance Sheet Classification:
Inventory	$	104,603	$	116,349
Other assets	37,752		65,883
Total inventory	$	142,355	$	182,232

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Intangible Assets and Goodwill (Tables)

6 Months Ended

Jun. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Intangible Assets

The following table presents the Company’s intangible assets at June 30, 2020 and December 31, 2019 (in thousands):

	June 30, 2020
	Gross Carrying Value		Accumulated Amortization		ASC 842 Adjustment		Total		Estimated useful life
Acquired intangible assets:
Developed product rights for Auryxia	$	213,603	$	(56,119)	—		$	157,484	7 years
Favorable lease	545		(5)		(540)		—		N/A
Total	$	214,148	$	(56,124)	$	(540)	$	157,484

	December 31, 2019
	Gross Carrying Value		Accumulated Amortization		ASC 842 Adjustment		Total		Estimated useful life
Acquired intangible assets:
Developed product rights for Auryxia	$	329,130	$	(37,918)	—		$	291,212	9 years
Favorable lease	545		(5)		(540)		—		N/A
Total	$	329,675	$	(37,923)	$	(540)	$	291,212

Schedule of Estimated Future Amortization Expense for Intangible Assets

Estimated future amortization expense for the intangible asset as of June 30, 2020 is as follows (in thousands):

	Total
2020	$	14,317
2021	28,633
2022	28,634
2023	28,633
2024	28,634
Thereafter	28,633
	$	157,484

Schedule of Goodwill

Goodwill was $55.1 million as of June 30, 2020 and December 31, 2019, derived as follows (in thousands):

Total Merger consideration	$	527,754
Less: Fair value of identified acquired assets and liabilities, net	(472,701)
Goodwill	$	55,053

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Accrued Expenses (Tables)

6 Months Ended

Jun. 30, 2020

Payables and Accruals [Abstract]

Components of Accrued Expenses

Accrued expenses as of June 30, 2020 and December 31, 2019 are as follows:

	June 30, 2020		December 31, 2019
	(in thousands)
Accrued clinical	$	63,046	$	61,815
Product revenue allowances	40,975		30,552
Accrued payroll	9,486		12,604
MTPC - Supply of Validation Drug Product	6,441		—
Lease liability	5,206		4,989
Royalties	2,815		2,713
Accrued commercial manufacturing	2,676		2,680
Professional fees	1,747		3,444
Accrued severance	712		725
Accrued other	9,728		9,549
Total accrued expenses	$	142,832	$	129,071

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Debt (Tables)

6 Months Ended

Jun. 30, 2020

Debt Disclosure [Abstract]

Schedule of Future Principal Payments on the Term Loans

Future principal payments on the Term Loans (as defined below) as of June 30, 2020 are as follows (in thousands):

	Principal Payments
	(in thousands)
2020	$	—
2021	—
2022	7,140
2023	30,354
2024	42,506
Thereafter	—
Total before unamortized discount and issuance costs	80,000
Less: unamortized discount and issuance costs	(3,662)
Total term loans	$	76,338

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Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2020

Equity [Abstract]

Summary of Reserved Shares of Common Stock for Future Issuance

The Company has reserved for future issuance the following number of shares of common stock:

	June 30, 2020	December 31, 2019
Common stock options and RSUs outstanding (1)	16,032,074	12,195,031
Shares available for issuance under Akebia equity    plans (2)	2,784,253	2,983,256
Warrant to purchase common stock	509,611	509,611
Shares available for issuance under the ESPP (3)	5,600,968	5,715,992
Total	24,926,906	21,403,890

(1)Includes awards granted under the 2014 Plan and the Inducement Award Program and awards issued in connection with the Merger.

(2)On January 1, 2020, January 1, 2019 and January 1, 2018, the shares reserved for future grants under the 2014 Plan increased by 4,031,376, 3,801,198 and 1,575,329 shares, respectively, pursuant to the 2014 Plan Evergreen Provision. On December 12, 2018, the shares reserved for future grants under the 2014 Plan increased by 2,323,213 shares as a result of the Company’s addition of the Assumed Shares to the 2014 Plan. On January 30, 2019, the Company’s Board of Directors approved 3,150,000 shares for issuance as option awards in fiscal year 2019 under the Inducement Award Program.

(3)On June 6, 2019, the shares reserved for future issuance under the ESPP increased by 5,200,000 shares upon shareholder approval of the Amended and Restated 2014 Employee Stock Purchase Plan. On February 28, 2018 and February 28, 2017, the shares reserved for future issuance under the 2014 ESPP remained unchanged. There were no increases in the shares reserved for future issuance pursuant to the evergreen provision under the ESPP in 2017 and 2018 as the maximum aggregate number of shares available for purchase under the 2014 ESPP had reached its cap of 739,611 on February 28, 2016.

Stock-Based Compensation Expense Related to Share-Based Awards

The Company has classified its stock-based compensation expense related to share-based awards as follows:

	Three Months Ended				Six Months Ended
	June 30, 2020		June 30, 2019		June 30, 2020		June 30, 2019
	(in thousands)				(in thousands)
Research and development	$	1,716	$	684	$	3,258	$	1,562
Selling, general and administrative	5,148		1,600		8,522		2,816
Total	$	6,864	$	2,284	$	11,780	$	4,378

Schedule of Compensation Expense by Type of Award

Compensation expense by type of award:

	Three Months Ended				Six Months Ended
	June 30, 2020		June 30, 2019		June 30, 2020		June 30, 2019
	(in thousands)				(in thousands)
Stock options	$	2,366	$	1,073	$	3,983	$	2,185
Restricted stock units	4,344		1,168		7,486		2,102
Employee stock purchase plan	154		43		311		91
Total	$	6,864	$	2,284	$	11,780	$	4,378

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Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2020

Commitments and Contingencies Disclosure [Abstract]

Schedule of Undiscounted Minimum Rental Commitments Under Non-cancelable Leases

As of June 30, 2020, undiscounted minimum rental commitments under non-cancelable leases, for each of the next five years and total thereafter are as follows:

	Operating Leases		Lease Payments to be Received from Sublease		Net Operating Lease Payments
	(in thousands)
Remaining 2020	$	3,068	$	888	$	2,180
2021	7,064		1,797		5,267
2022	6,735		1,824		4,911
2023	5,347		307		5,040
2024	5,116		—		5,116
Thereafter	8,818		—		8,818
Total	$	36,148	$	4,816	$	31,332

Schedule of Difference Between Undiscounted Minimum Rental Commitments Under Non-cancelable Leases and Operating Leases Liabilities

As of June 30, 2020, the following represents the difference between the remaining undiscounted minimum rental commitments under non-cancelable leases and the operating lease liabilities:

	Operating Leases
	(in thousands) Total
Undiscounted minimum rental commitments	$	36,148
Present value adjustment using incremental borrowing rate	(6,079)
Operating lease liabilities	$	30,069

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Net Loss per Share (Tables)

6 Months Ended

Jun. 30, 2020

Earnings Per Share [Abstract]

Anti-Dilutive Securities Excluded from Calculation of Diluted Net Loss per Share

The shares in the table below were excluded from the calculation of diluted net loss per share, prior to the use of the treasury stock method, due to their anti-dilutive effect:

	As of June 30,
	2020	2019
Warrant	509,611	509,611
Outstanding stock options	9,632,240	7,779,744
Unvested restricted stock units	6,399,834	1,937,822
Total	16,541,685	10,227,177

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Nature of Organization and Operations - Additional Information (Details)	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020
Disaggregation of Revenue [Line Items]
Number of months for operating plan sufficiently funded by cash resources		12 months
VAFSEO
Disaggregation of Revenue [Line Items]
Potential royalty revenues (up to)	20.00%

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Summary of Significant Accounting Policies - Additional Information (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) segment	Jun. 30, 2019 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of operating segments | segment			1
Depreciation expense	$ 500,000	$ 600,000	$ 1,000,000.0	$ 1,000,000.0
Impairment of intangible asset, finite-lived	115,500,000
Remeasurements to property and equipment	0	0	0	0
Other asset impairments	0		$ 0
Asset impairments		0		$ 0
Otsuka U.S. Agreement
Summary Of Significant Accounting Policies [Line Items]
Cost share costs for license agreement	200,000	300,000
Reimbursable by Otsuka	100,000	100,000
Cost share costs by partner for license agreement	400,000	100,000
Reimbursable to Otsuka	$ 200,000	$ 100,000
Minimum
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life			3 years
Maximum
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life			7 years

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Summary of Significant Accounting Policies - Reconciliation of Cash, Cash Equivalents, and Restricted Cash (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2018
Summary Of Significant Accounting Policies [Line Items]
Cash and cash equivalents	$ 245,406	$ 147,449	$ 87,212
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows	247,840	$ 149,804	89,667	$ 107,099
Prepaid expenses and other current assets
Summary Of Significant Accounting Policies [Line Items]
Prepaid expenses and other current assets	395		363
Other assets
Summary Of Significant Accounting Policies [Line Items]
Other assets	$ 2,039		$ 2,092

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Summary of Significant Accounting Policies - Summary of Property and Equipment and Related Accumulated Depreciation (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	$ 14,089	$ 14,044
Less accumulated depreciation	(4,709)	(3,664)
Net property and equipment	$ 9,380	10,380
Minimum
Property, Plant and Equipment [Line Items]
Useful life	3 years
Maximum
Property, Plant and Equipment [Line Items]
Useful life	7 years
Computer equipment and software
Property, Plant and Equipment [Line Items]
Useful life	3 years
Gross property, plant and equipment	$ 1,010	1,010
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	$ 2,131	2,086
Furniture and fixtures | Minimum
Property, Plant and Equipment [Line Items]
Useful life	5 years
Furniture and fixtures | Maximum
Property, Plant and Equipment [Line Items]
Useful life	7 years
Equipment
Property, Plant and Equipment [Line Items]
Useful life	7 years
Gross property, plant and equipment	$ 2,451	2,451
Leasehold improvements
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	$ 8,497	$ 8,497
Leasehold improvements | Maximum
Property, Plant and Equipment [Line Items]
Useful life	10 years

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Product Revenue and Reserves for Variable Consideration - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Total revenues	$ 90,142	$ 100,803	$ 178,620	$ 173,469
Product revenue, net
Disaggregation of Revenue [Line Items]
Total revenues	30,696	$ 29,089	59,905	$ 52,200
Accounts receivable, net	$ 20,300		$ 20,300		$ 23,000

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Product Revenue and Reserves for Variable Consideration - Summary of Product Revenue Allowance and Reserve Categories (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	$ 31,543	$ 23,737
Current provisions related to sales in current year	74,087	49,610
Adjustments related to prior year sales	651	457
Credits/payments made	(62,177)	(51,114)
Ending balance	44,104	22,690
Chargebacks and Discounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	738	516
Current provisions related to sales in current year	5,055	3,306
Adjustments related to prior year sales	(31)	(22)
Credits/payments made	(4,995)	(3,320)
Ending balance	767	480
Rebates, Fees and other Deductions
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	30,552	22,861
Current provisions related to sales in current year	66,348	44,708
Adjustments related to prior year sales	638	479
Credits/payments made	(54,945)	(46,131)
Ending balance	42,593	21,917
Returns
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	253	360
Current provisions related to sales in current year	2,684	1,596
Adjustments related to prior year sales	44	0
Credits/payments made	(2,237)	(1,663)
Ending balance	$ 744	$ 293

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License, Collaboration and Other Significant Agreements - Revenues Recognized From License, Collaboration and Other Significant Agreements (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
License, Collaboration and Other Revenue:
Total revenues	$ 90,142	$ 100,803	$ 178,620	$ 173,469
License, collaboration and other revenue
License, Collaboration and Other Revenue:
Total revenues	59,446	71,714	118,715	121,269
License, collaboration and other revenue | Mitsubishi Tanabe Pharma Corporation
License, Collaboration and Other Revenue:
Total revenues	15,000	10,000	15,000	10,000
License, collaboration and other revenue | Otsuka Pharmaceutical Company. Ltd. | Otsuka U.S. Agreement
License, Collaboration and Other Revenue:
Total revenues	25,888	37,519	64,465	63,742
License, collaboration and other revenue | Otsuka Pharmaceutical Company. Ltd. | Otsuka International Agreement
License, Collaboration and Other Revenue:
Total revenues	12,832	22,467	32,202	44,423
License, collaboration and other revenue | Total Proportional Performance Revenue
License, Collaboration and Other Revenue:
Total revenues	53,720	69,986	111,667	118,165
License, collaboration and other revenue | JT and Torii
License, Collaboration and Other Revenue:
Total revenues	1,740	1,491	2,866	2,719
License, collaboration and other revenue | Other Revenue | Mitsubishi Tanabe Pharma Corporation
License, Collaboration and Other Revenue:
Total revenues	$ 3,986	$ 237	$ 4,182	$ 385

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License, Collaboration and Other Significant Agreements - Deferred Revenues Balance (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Deferred Revenue:
Short-Term	$ 23,529	$ 39,830
Long-Term	34,542	$ 33,120
Total	58,071
Otsuka Pharmaceutical Company. Ltd. | Otsuka U.S. Agreement
Deferred Revenue:
Short-Term	15,378
Long-Term	20,557
Total	35,935
Otsuka Pharmaceutical Company. Ltd. | Otsuka International Agreement
Deferred Revenue:
Short-Term	8,151
Long-Term	9,306
Total	17,457
Vifor Pharma
Deferred Revenue:
Short-Term	0
Long-Term	4,679
Total	$ 4,679

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License, Collaboration and Other Significant Agreements - Schedule of Changes in Contract Assets and Liabilities (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Contract liabilities:
Balance at End of Period	$ 58,071
Other current assets
Contract assets:
Balance at Beginning of Period		$ 0
Additions		10,000
Deductions		0
Balance at End of Period		10,000
Accounts receivable
Contract assets:
Balance at Beginning of Period	15,822	1,587
Additions	118,368	81,830
Deductions	(115,382)	(75,260)
Balance at End of Period	18,808	8,157
Prepaid expenses and other current assets
Contract assets:
Balance at Beginning of Period	0
Additions	756
Deductions	0
Balance at End of Period	756
Deferred revenue
Contract liabilities:
Balance at Beginning of Period	72,950	112,689
Additions	90,471	91,351
Deductions	(105,350)	(108,166)
Balance at End of Period	58,071	95,874
Accounts payable
Contract liabilities:
Balance at Beginning of Period	0	13,492
Additions	5,651	0
Deductions	0	(13,492)
Balance at End of Period	5,651	$ 0
Accrued expenses and other current liabilities
Contract liabilities:
Balance at Beginning of Period	0
Additions	615
Deductions	(615)
Balance at End of Period	$ 0

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License, Collaboration and Other Significant Agreements - Schedule of Revenue Recognized Resulting from Changes in Contract Asset and Contract Liability (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue Recognized in the Period from:
Amounts included in deferred revenue at the beginning of the period	$ 16,964	$ 23,277	$ 22,186	$ 40,316
Performance obligations satisfied in previous periods	$ 3,555	$ 0	$ 3,263	$ 1,254

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License, Collaboration and Other Significant Agreements - Additional Information (Details)							1 Months Ended				3 Months Ended					6 Months Ended
	Feb. 14, 2020 USD ($)	Apr. 17, 2019	Apr. 08, 2019 USD ($)	May 12, 2017 USD ($) $ / shares shares	Apr. 25, 2017 USD ($)	Feb. 09, 2017 USD ($) $ / shares shares	Aug. 10, 2020 USD ($)	Jul. 31, 2019 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Jun. 30, 2020 USD ($) shares	Mar. 31, 2020 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2017 USD ($)	Jun. 30, 2020 USD ($) performanceObligation shares	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($) shares	Dec. 31, 2018 USD ($)
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Recognized revenue under license agreement											$ 90,142,000			$ 100,803,000		$ 178,620,000	$ 173,469,000
Deferred revenue											58,071,000					58,071,000
Revenue recognized											16,964,000			23,277,000		22,186,000	40,316,000
Deferred revenue, net of current portion											34,542,000					34,542,000		$ 33,120,000
Short-term deferred revenue											$ 23,529,000					$ 23,529,000		$ 39,830,000
Common stock, shares issued (in shares) | shares											143,129,409					143,129,409		121,674,568
License, collaboration and other revenue
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Recognized revenue under license agreement											$ 59,446,000			71,714,000		$ 118,715,000	121,269,000
Developmental Milestones | Otsuka Pharmaceutical Co. Ltd. | International
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Potential milestone revenue (up to)											65,000,000.0					65,000,000.0
Accounts Receivable
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Accounts receivable											18,808,000			8,157,000		18,808,000	8,157,000	$ 15,822,000	$ 1,587,000
Prepaid expenses and other current assets
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Accounts receivable											756,000					756,000		0
Accounts payable
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Deferred revenue											5,651,000			0		5,651,000	0	0	$ 13,492,000
Mitsubishi Tanabe Pharma Corporation | License, collaboration and other revenue
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Recognized revenue under license agreement											15,000,000			$ 10,000,000		$ 15,000,000	10,000,000
Mitsubishi Tanabe Pharma Corporation | Development and Commercialize Collaboration Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Milestone revenue													$ 10,000,000.0
Collaboration agreement, expiration period																10 years
Collaboration agreement, notice period for termination																12 months
Upfront cash payment received																$ 20,000,000.0
Percentage of royalty payments on sales																20.00%
Additional milestone or royalty payments received																$ 0
Number of performance obligations | performanceObligation																2
Mitsubishi Tanabe Pharma Corporation | Development and Commercialize Collaboration Agreement | Maximum
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Milestone revenue											175,000,000.0					$ 175,000,000.0
Mitsubishi Tanabe Pharma Corporation | Development And Commercialize Research And License Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Milestone revenue																10,000,000.0
Upfront cash payment received																20,000,000.0
Cost of research services																20,500,000
Deferred revenue											0					0
Accounts receivable											0					0
Mitsubishi Tanabe Pharma Corporation | Total Proportional Performance Revenue
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Upfront cash payment received											10,400,000
Revenue recognized											4,000,000.0					4,000,000.0
Deferred revenue, net of current portion											0					0
Mitsubishi Tanabe Pharma Corporation | Total Proportional Performance Revenue | Accounts Receivable
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Accounts receivable											0					0
Mitsubishi Tanabe Pharma Corporation | Total Proportional Performance Revenue | Other Current Liabilities
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Short-term deferred revenue											6,400,000					6,400,000
Mitsubishi Tanabe Pharma Corporation | Regulatory Milestone Payments
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Milestone revenue								$ 10,000,000.0
Mitsubishi Tanabe Pharma Corporation | Regulatory Milestone Payments | Development and Commercialize Collaboration Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Milestone revenue													$ 10,000,000.0
Additional milestone revenue receivable											15,000,000.0					15,000,000.0
Mitsubishi Tanabe Pharma Corporation | Regulatory Milestone Payments | Development and Commercialize Collaboration Agreement | Maximum
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Upfront cash payment received																40,000,000.0
Mitsubishi Tanabe Pharma Corporation | Regulatory Milestone Payments | Development And Commercialize Research And License Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Milestone revenue																10,000,000.0
Revenue recognized											10,000,000.0					10,000,000.0
Mitsubishi Tanabe Pharma Corporation | Development, Regulatory and Commercial Events | Development and Commercialize Collaboration Agreement | Maximum
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Milestone revenue																225,000,000.0
Mitsubishi Tanabe Pharma Corporation | Development Milestones | Development and Commercialize Collaboration Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Milestone revenue																10,000,000.0
Mitsubishi Tanabe Pharma Corporation | Commercial Milestone Payments | Development and Commercialize Collaboration Agreement | Maximum
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Milestone revenue											175,000,000.0					175,000,000.0
Mitsubishi Tanabe Pharma Corporation | Upfront | Development and Commercialize Collaboration Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Incurred clinical and commercial development cost																20,500,000
Mitsubishi Tanabe Pharma Corporation | Development Milestones One | Development And Commercialize Research And License Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Milestone revenue																6,000,000.0
Mitsubishi Tanabe Pharma Corporation | Development Milestones Two | Development And Commercialize Research And License Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Milestone revenue																4,000,000.0
Mitsubishi Tanabe Pharma Corporation | Regulatory Milestone, Approval Of Vadadustat In Japan | Development and Commercialize Collaboration Agreement | Subsequent Event
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Proceeds from collaborators							$ 15,000,000.0
Mitsubishi Tanabe Pharma Corporation | Development and Commercialize Collaboration Agreement | Development And Commercialize Research And License Agreement | Accounts Receivable
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Accounts receivable											15,000,000.0					15,000,000.0
Otsuka Pharmaceutical Company. Ltd. | Otsuka U.S. Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Milestone revenue																$ 0
Number of performance obligations | performanceObligation																3
Deferred revenue											35,935,000					$ 35,935,000
Deferred revenue, net of current portion											20,557,000					20,557,000
Short-term deferred revenue											$ 15,378,000					15,378,000
Collaborative arrangements cost sharing payments																290,600,000
Percentage of increase in funding to fund current global development costs										52.50%				80.00%
Collaborative arrangements additional cost sharing payments amount																$ 71,500,000
Percentage of market penetration for license agreement																90.00%
License agreement, notice period for termination																12 months
Transaction price																$ 449,400,000
Reimbursement for Otsuka's share of costs previously incurred																33,800,000
Transaction price, description											As of June 30, 2020, the transaction price totaling $438.7 million is comprised of: (i) the up-front payment of $125.0 million, (ii) the cost share payment with respect to amounts incurred by the Company through December 31, 2016 of $33.8 million, and (iii) the estimate of the net cost share consideration to be received of approximately $279.9 million with respect to amounts incurred by the Company subsequent to December 31, 2016 and the Additional Funding. As of June 30, 2020, no development or regulatory milestones have been assessed as probable of being reached and thus have been fully constrained.
Cost share costs incurred											$ 200,000			$ 300,000
Reimbursable by Otsuka											100,000			100,000
Cost share costs by partner for license agreement											400,000			100,000
Reimbursable to Otsuka											200,000			100,000
Otsuka Pharmaceutical Company. Ltd. | Otsuka U.S. Agreement | Global Development Plan
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Reimbursement for Otsuka's share of costs previously incurred									$ 33,800,000
Collaborative arrangements additional cost sharing payments expected amount																106,400,000
Otsuka Pharmaceutical Company. Ltd. | Otsuka U.S. Agreement | License, collaboration and other revenue
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Recognized revenue under license agreement											25,888,000			37,519,000		64,465,000	63,742,000
Otsuka Pharmaceutical Company. Ltd. | Otsuka U.S. Agreement | Accounts Receivable
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Accounts receivable																		8,900,000
Otsuka Pharmaceutical Company. Ltd. | Otsuka U.S. Agreement | Prepaid expenses and other current assets
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Accounts receivable											500,000					500,000
Otsuka Pharmaceutical Company. Ltd. | Otsuka U.S. Agreement | Accounts payable
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Deferred revenue											3,900,000					$ 3,900,000
Otsuka Pharmaceutical Company. Ltd. | Otsuka U.S. Agreement | Minimum
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Reduction in percentage of future payments due upon current global development costs creditable																50.00%
Percentage of remaining creditable amount applied to future payments																50.00%
Otsuka Pharmaceutical Company. Ltd. | Otsuka U.S. Agreement | Minimum | Global Development Plan
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Collaborative arrangements cost sharing payments																$ 290,600,000
Otsuka Pharmaceutical Company. Ltd. | Otsuka International Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Number of performance obligations | performanceObligation																3
Deferred revenue											17,457,000					$ 17,457,000
Deferred revenue, net of current portion											9,306,000					9,306,000
Short-term deferred revenue											$ 8,151,000					8,151,000
License agreement, notice period for termination					12 months
Transaction price																287,500,000
Reimbursement for Otsuka's share of costs previously incurred																200,000
Transaction price, description											As of June 30, 2020, the transaction price totaling $286.2 million is comprised of: (i) the up-front payment of $73.0 million, (ii) the cost share payment with respect to amounts incurred by the Company during the quarter ended June 30, 2017 of $0.2 million, and (iii) an estimate of the net cost share consideration to be received with respect to amounts incurred by the Company subsequent to June 30, 2017 of $213.0 million. As of June 30, 2020, no development or regulatory milestones have been assessed as probable of being reached and thus have been fully constrained.
Estimated current global development costs subsequent to June 30, 2017															$ 214,300,000
Milestone or royalty payments received					$ 0
Otsuka Pharmaceutical Company. Ltd. | Otsuka International Agreement | Global Development Plan
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Reimbursement for Otsuka's share of costs previously incurred															200,000
Otsuka Pharmaceutical Company. Ltd. | Otsuka International Agreement | License, collaboration and other revenue
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Recognized revenue under license agreement											$ 12,832,000			22,467,000		32,202,000	44,423,000
Otsuka Pharmaceutical Company. Ltd. | Otsuka International Agreement | Accounts Receivable
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Accounts receivable																		$ 4,000,000.0
Otsuka Pharmaceutical Company. Ltd. | Otsuka International Agreement | Prepaid expenses and other current assets
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Accounts receivable											200,000					200,000
Otsuka Pharmaceutical Company. Ltd. | Otsuka International Agreement | Accounts payable
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Deferred revenue											1,800,000					1,800,000
Otsuka Pharmaceutical Company. Ltd. | Regulatory Milestone Payments | Otsuka U.S. Agreement | Maximum
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Potential milestone revenue (up to)											65,000,000.0					65,000,000.0
Otsuka Pharmaceutical Company. Ltd. | Regulatory Milestone Payments | Otsuka International Agreement | Maximum
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Potential milestone revenue (up to)											52,000,000.0					52,000,000.0
Otsuka Pharmaceutical Company. Ltd. | Development Milestones | Otsuka U.S. Agreement | Maximum
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Upfront cash payment received																105,000,000.0
Otsuka Pharmaceutical Company. Ltd. | Commercial Milestone Payments | Otsuka U.S. Agreement | Maximum
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Milestone revenue											575,000,000.0					575,000,000.0
Otsuka Pharmaceutical Company. Ltd. | Commercial Milestone Payments | Otsuka International Agreement | Maximum
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Milestone revenue											525,000,000.0					525,000,000.0
Otsuka Pharmaceutical Company. Ltd. | Up-front, Non-refundable and Non-creditable | Otsuka U.S. Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Upfront cash payment received										$ 125,000,000.0						125,000,000.0
Otsuka Pharmaceutical Company. Ltd. | Up-front, Non-refundable and Non-creditable | Otsuka International Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Upfront cash payment received					$ 73,000,000.0											73,000,000.0
Otsuka Pharmaceutical Company. Ltd. | Development and Regulatory Milestones | Otsuka U.S. Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Milestone revenue																$ 0
Janssen Pharmaceutica NV | Development And Commercialize Research And License Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Collaboration agreement, expiration period						10 years
Collaboration agreement, notice period for termination						180 days
Collaborative arrangement, term						3 years
Upfront payment made in cash						$ 1,000,000.0
Warrant to purchase common stock (in shares) | shares						509,611
Janssen Pharmaceutica NV | Development And Commercialize Research And License Agreement | Maximum
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Milestone revenue						$ 215,000,000.0
Upfront cash payment received						$ 16,500,000
Johnson & Johnson Innovation | Development And Commercialize Research And License Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Warrant to purchase common stock (in shares) | shares						509,611
Fair value of warrant									$ 3,400,000						$ 3,400,000
Exercise price (in dollars per share) | $ / shares						$ 9.81
Vifor (International) Ltd. | Research and Development Expense
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Payments after closing of PRV purchase												$ 10,000,000.0
Vifor (International) Ltd. | License Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Milestone revenue			$ 25,000,000.0	$ 25,000,000.0
Deferred revenue, net of current portion				$ 4,700,000
License agreement, notice period for termination																12 months
Common stock, shares issued (in shares) | shares				3,571,429
Sale of stock, price per share (in dollars per share) | $ / shares				$ 14.00
Proceeds from common stock sold				$ 50,000,000.0
Premium over the closing stock price of common stock (in dollars per share) | $ / shares				$ 12.69
Premium amount over the closing stock price of common stock				$ 4,700,000
Vifor (International) Ltd. | Priority Review Voucher Letter Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Payments after closing of PRV purchase	$ 10,000,000.0
JT and Torii | License, collaboration and other revenue
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Recognized revenue under license agreement											1,740,000			1,491,000		$ 2,866,000	2,719,000
JT and Torii | License Agreement | Panion & BF Biotech, Incorporation
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
License agreement, notice period for termination		90 days
Royalty payments											2,800,000			2,600,000		$ 5,300,000	4,700,000
JT and Torii | Sublicense Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Number of performance obligations | performanceObligation																2
Recognized revenue under license agreement											$ 1,700,000			$ 1,500,000		$ 2,900,000	$ 2,700,000
License agreement, notice period for termination																6 months
Potential payment for achievement of annual net sales milestones																$ 55,000,000.0
Prior written notice for termination on the breach of agreement period																60 days

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Business Combination - Additional Information (Details)			3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 12, 2018 USD ($)	Dec. 11, 2018 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020	Jun. 30, 2020 USD ($) shares	Jun. 30, 2019 USD ($)	Dec. 31, 2019
Business Acquisition [Line Items]
Total fair value consideration	$ 527,754,000
Impairment of intangible asset, finite-lived			$ 115,500,000
Increase in excess inventory purchase commitments					$ 10,954,000	$ 0
BioVectra Inc
Business Acquisition [Line Items]
Preliminary fair value of the off-market element	29,500,000
Increase in excess inventory purchase commitments			$ 11,000,000.0
Developed Product Rights for Auryxia
Business Acquisition [Line Items]
Intangible assets, estimated useful life			7 years	9 years	7 years		9 years
Keryx Biopharmaceuticals, Inc.
Business Acquisition [Line Items]
Total fair value consideration	527,754,000
Business combination, Purchase price	$ 527,754,000
Risk-adjusted discount rate used to calculate present value of future expected cash inflows of intangible assets	20.00%
Preliminary fair value of the off-market element	$ 29,510,000
Goodwill deductible for tax purposes	0
Deferred tax liability	$ 35,096,000
Keryx Biopharmaceuticals, Inc. | Developed Product Rights for Auryxia
Business Acquisition [Line Items]
Intangible assets, estimated useful life	9 years		7 years
Keryx Biopharmaceuticals, Inc. | Common Stock
Business Acquisition [Line Items]
Total fair value consideration	$ 516,492,000
Keryx Biopharmaceuticals, Inc. | Merger Agreement
Business Acquisition [Line Items]
Outstanding common stock and awards converted into right to receive shares and awards, ratio	0.37433				0.37433
Total fair value consideration	$ 527,800,000
Additional shares expected to be issued (in shares) | shares					4,000,000
Aggregate shares available for conversion (in shares) | shares					39,600,000
Fair value of additional shares issued					$ 13,400,000
Keryx Biopharmaceuticals, Inc. | Notes Conversion Agreement
Business Acquisition [Line Items]
Convertible notes amount		$ 164,700,000
Keryx Biopharmaceuticals, Inc. | Notes Conversion Agreement | Common Stock
Business Acquisition [Line Items]
Convertible notes converted into shares (in shares) | shares					35,582,335

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Business Combination - Summary of Total Fair Value Consideration (Details) $ in Thousands	Dec. 12, 2018 USD ($) shares
Business Acquisition [Line Items]
Total fair value consideration	$ 527,754
Keryx Biopharmaceuticals, Inc.
Business Acquisition [Line Items]
Total fair value consideration	$ 527,754
Keryx Biopharmaceuticals, Inc. | Akebia Shares
Business Acquisition [Line Items]
Shares issued (in shares) | shares	57,773,090
Total fair value consideration	$ 516,492
Keryx Biopharmaceuticals, Inc. | Akebia RSUs
Business Acquisition [Line Items]
RSU / Options issued (in shares) | shares	602,752
Total fair value consideration	$ 304
Keryx Biopharmaceuticals, Inc. | Akebia Stock Options
Business Acquisition [Line Items]
RSU / Options issued (in shares) | shares	3,967,290
Total fair value consideration	$ 10,958

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Business Combination - Summary of Purchase Price of Identifiable Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019	Dec. 12, 2018
Business Acquisition [Line Items]
Goodwill	$ 55,053	$ 55,053	$ 55,053
Keryx Biopharmaceuticals, Inc.
Business Acquisition [Line Items]
Cash and cash equivalents			5,257
Inventory			235,597
Trade accounts receivable, net			15,834
Prepaid expenses and other current assets			8,399
Goodwill			55,053
Intangible assets:
Developed product rights for Auryxia			329,130
Other intangible assets			545
Property and equipment, net			3,646
Other assets			14,441
Accounts payable			(17,570)
Accrued expenses			(42,972)
Deferred tax liability			(35,096)
Debt			(15,000)
Fair value of unfavorable executory contract			(29,510)
Total purchase price			$ 527,754

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Available For Sale Securities - Summary of Cash Cash Equivalents and Available for Sale Securities Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Debt Securities, Available-for-sale [Line Items]
Cash and cash equivalents	$ 245,406	$ 147,449	$ 87,212
Cash and cash equivalents, fair value	245,406	147,449
Available for sale securities:
Available for sale securities, amortized cost	49,952	245
Available for sale securities, gross unrealized gains	0	0
Available for sale securities, gross unrealized losses	(9)	0
Available for sale securities, fair value	49,943	245
Total cash, cash equivalents, and available for sale securities, amortized cost	295,358	147,694
Total cash, cash equivalents, and available for sale securities, fair value	295,349	147,694
U.S. government debt securities
Available for sale securities:
Available for sale securities, amortized cost	49,952
Available for sale securities, gross unrealized gains	0
Available for sale securities, gross unrealized losses	(9)
Available for sale securities, fair value	$ 49,943
Certificates of deposit
Available for sale securities:
Available for sale securities, amortized cost		245
Available for sale securities, gross unrealized gains		0
Available for sale securities, gross unrealized losses		0
Available for sale securities, fair value		$ 245

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Available For Sale Securities - Estimated Fair Value by Contractual Maturity (Details) $ in Thousands	Jun. 30, 2020 USD ($)
Investments, Debt and Equity Securities [Abstract]
Due in one year or less	$ 49,943
Due after one year	0
Total available for sale securities	$ 49,943

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Available For Sale Securities - Continuous Unrealized Loss Position (Details) $ in Thousands	Jun. 30, 2020 USD ($)
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Unrealized loss for less than 12 months, gross unrealized losses	$ (9)
Unrealized loss for less than 12 months, estimated fair value	49,943
Unrealized loss for 12 months or more, gross unrealized losses	0
Unrealized loss for 12 months or more, estimated fair value	0
Total, gross unrealized losses	(9)
Total, estimated fair value	49,943
U.S. government debt securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Unrealized loss for less than 12 months, gross unrealized losses	(9)
Unrealized loss for less than 12 months, estimated fair value	49,943
Unrealized loss for 12 months or more, gross unrealized losses	0
Unrealized loss for 12 months or more, estimated fair value	0
Total, gross unrealized losses	(9)
Total, estimated fair value	$ 49,943

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Available For Sale Securities - Additional Information (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2020 USD ($) security	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) security	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($) security
Investments, Debt and Equity Securities [Abstract]
Available for sale securities	$ 49,943,000		$ 49,943,000		$ 245,000
Realized gains (losses) on available for sale securities	$ 0	$ 0	$ 0	$ 0
Number of available-for-sale securities in a unrealized loss position | security	5		5		0
Available-for-sale securities, recognized credit losses during period	$ 0

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Fair Value of Financial Instruments - Assets Measured or Disclosed at Fair Value on Recurring Basis (Details) - USD ($)	Jun. 30, 2020	Dec. 31, 2019
Assets:
Cash and cash equivalents	$ 245,406,000	$ 147,449,000
Available for sale securities	49,943,000	245,000
Liabilities:
Derivative liability	1,890,000	1,650,000
U.S. government debt securities
Assets:
Available for sale securities	49,943,000
Certificates of deposit
Assets:
Available for sale securities		245,000
Level 3
Assets:
Total assets fair value disclosure	0	0
Fair value measurements recurring
Assets:
Cash and cash equivalents	245,406,000	147,449,000
Total assets fair value disclosure	295,349,000	147,694,000
Liabilities:
Derivative liability	1,890,000	1,650,000
Total liabilities fair value disclosure	1,890,000	1,650,000
Fair value measurements recurring | U.S. government debt securities
Assets:
Available for sale securities	49,943,000
Fair value measurements recurring | Certificates of deposit
Assets:
Available for sale securities		245,000
Fair value measurements recurring | Level 1
Assets:
Cash and cash equivalents	245,406,000	147,449,000
Total assets fair value disclosure	245,406,000	147,449,000
Liabilities:
Derivative liability	0	0
Total liabilities fair value disclosure	0	0
Fair value measurements recurring | Level 1 | U.S. government debt securities
Assets:
Available for sale securities	0
Fair value measurements recurring | Level 1 | Certificates of deposit
Assets:
Available for sale securities		0
Fair value measurements recurring | Level 2
Assets:
Cash and cash equivalents	0	0
Total assets fair value disclosure	49,943,000	245,000
Liabilities:
Derivative liability	0	0
Total liabilities fair value disclosure	0	0
Fair value measurements recurring | Level 2 | U.S. government debt securities
Assets:
Available for sale securities	49,943,000
Fair value measurements recurring | Level 2 | Certificates of deposit
Assets:
Available for sale securities		245,000
Fair value measurements recurring | Level 3
Assets:
Cash and cash equivalents	0	0
Total assets fair value disclosure	0	0
Liabilities:
Derivative liability	1,890,000	1,650,000
Total liabilities fair value disclosure	1,890,000	1,650,000
Fair value measurements recurring | Level 3 | U.S. government debt securities
Assets:
Available for sale securities	$ 0
Fair value measurements recurring | Level 3 | Certificates of deposit
Assets:
Available for sale securities		$ 0

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Fair Value of Financial Instruments - Additional Information (Details) - USD ($)	Jun. 30, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	$ 1,890,000	$ 1,650,000
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value on recurring basis	0	0
Level 3 | Other than Derivative Liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities measured at fair value on recurring basis	0	0
Collateral Agent, Pharmakon
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	$ 1,900,000	$ 1,700,000

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Fair Value of Financial Instruments - Schedule of Fair Value Derivative Liability (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2020	Jun. 30, 2019
Derivative Liability, Fair Value, Gross Liability [Roll Forward]
Balance at December 31, 2019	$ 1,740	$ 1,650	$ 1,650
Change in fair value of derivative liability, recorded as other expense	150	90	240	$ 0
Balance at June 30, 2020	$ 1,890	$ 1,740	$ 1,890

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Inventory - Components of Inventory (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Inventory Disclosure [Abstract]
Raw materials	$ 2,078	$ 2,278
Work in process	101,641	137,858
Finished goods	38,636	42,096
Total inventory	142,355	182,232
Balance Sheet Classification:
Inventory	104,603	116,349
Other assets	$ 37,752	$ 65,883

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Inventory - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Business Acquisition [Line Items]
Inventory amounts written down	$ 9,900	$ 1,300	$ 10,089	$ 3,023
Keryx Biopharmaceuticals, Inc.
Business Acquisition [Line Items]
Inventory step-up charges	$ 6,000	$ 1,900	$ 6,000	$ 2,800

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Intangible Assets and Goodwill - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended	12 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 214,148		$ 214,148	$ 329,675
Accumulated Amortization	(56,124)		(56,124)	(37,923)
ASC 842 Adjustment	(540)		(540)	(540)
Total	157,484		157,484	291,212
Developed Product Rights for Auryxia
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	213,603		213,603	329,130
Accumulated Amortization	(56,119)		(56,119)	(37,918)
Total	$ 157,484		$ 157,484	$ 291,212
Estimated useful life	7 years	9 years	7 years	9 years
Favourable Lease
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 545		$ 545	$ 545
Accumulated Amortization	(5)		(5)	(5)
ASC 842 Adjustment	(540)		(540)	(540)
Total	$ 0		$ 0	$ 0

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Intangible Assets and Goodwill - Additional Information (Details)	3 Months Ended			6 Months Ended		12 Months Ended
	Jun. 30, 2020 USD ($)	Mar. 31, 2020	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) segment	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)	Dec. 12, 2018 USD ($)
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 9,100,000		$ 9,100,000	$ 18,201,000	$ 18,200,000
Impairment of intangible asset, finite-lived	115,500,000
Goodwill	55,053,000			$ 55,053,000		$ 55,053,000	$ 55,053,000
Number of operating segments | segment				1
Goodwill impairment	$ 0		$ 0	$ 0	$ 0
Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow
Finite-Lived Intangible Assets [Line Items]
Intangible asset, fair value, measurement input	0.095			0.095
Developed Product Rights for Auryxia
Finite-Lived Intangible Assets [Line Items]
Intangible assets, estimated useful life	7 years	9 years		7 years		9 years

XML

Intangible Assets and Goodwill - Schedule of Estimated Future Amortization Expense for Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
2020	$ 14,317
2021	28,633
2022	28,634
2023	28,633
2024	28,634
Thereafter	28,633
Total	$ 157,484	$ 291,212

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Intangible Assets and Goodwill - Schedule of Goodwill (Details) - USD ($) $ in Thousands	Dec. 12, 2018	Jun. 30, 2020	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Total Merger consideration	$ 527,754
Less: Fair value of identified acquired assets and liabilities, net	(472,701)
Goodwill	$ 55,053	$ 55,053	$ 55,053

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Accrued Expenses - Components of Accrued Expenses (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Payables and Accruals [Abstract]
Accrued clinical	$ 63,046	$ 61,815
Product revenue allowances	40,975	30,552
Accrued payroll	9,486	12,604
MTPC - Supply of Validation Drug Product	6,441	0
Lease liability	5,206	4,989
Royalties	2,815	2,713
Accrued commercial manufacturing	2,676	2,680
Professional fees	1,747	3,444
Accrued severance	712	725
Accrued other	9,728	9,549
Total accrued expenses	$ 142,832	$ 129,071

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Debt - Schedule of Future Principal Payments on the Term Loans (Details) $ in Thousands	Jun. 30, 2020 USD ($)
Debt Disclosure [Abstract]
2020	$ 0
2021	0
2022	7,140
2023	30,354
2024	42,506
Thereafter	0
Total before unamortized discount and issuance costs	80,000
Less: unamortized discount and issuance costs	(3,662)
Total term loans	$ 76,338

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Debt - Additional Information (Details)		3 Months Ended	6 Months Ended
	Nov. 11, 2019 USD ($) tranche	Jun. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)	Nov. 25, 2019 USD ($)
Line of Credit Facility [Line Items]
Term loan, net of facility fees, lender expenses and issuance costs		$ 76,338,000	$ 76,338,000
Derivative liability		1,890,000	1,890,000	$ 1,650,000
Collateral Agent, Pharmakon
Line of Credit Facility [Line Items]
Derivative liability		1,900,000	$ 1,900,000	$ 1,700,000
Biopharma Credit Investments V (Master) LP | Keryx | Term Loan | Collateral Agent, Pharmakon
Line of Credit Facility [Line Items]
Line of credit, maximum borrowing capacity	$ 100,000,000.0
Line of credit, maximum borrowing capacity, number of available tranches | tranche	2
Term loan, maturity date, description	The Term Loans will mature on the fifth anniversary of the Tranche A Funding Date, or the Maturity Date.
Term loan, maturity term	5 years
Term loan payment description			The Company will repay the principal under the Term Loans in equal quarterly payments starting on the 33rd-month anniversary of the applicable Funding Date or, if certain conditions are met, it will have the option to repay the principal in equal quarterly payments starting on the 48th-month anniversary of the applicable Funding Date, or collectively the Amortization Schedule. Under certain circumstances, unless certain liquidity conditions are met, the Maturity Date may decrease by up to one year, and the Amortization Schedule may correspondingly commence up to one year earlier
Term loan, maturity term, potential reduction (up to)	1 year
Term loan, amortization period, potential reduction (up to)	1 year
Facility fee percentage on principal amount	2.00%
Facility fee paid, amount	$ 2,000,000.0
Prepayment premium percentage on principal if prepaid prior to third anniversary of funding	2.00%
Prepayment premium percentage on principal if prepaid prior to fourth anniversary and after third anniversary of funding	1.00%
Prepayment premium percentage on principal if prepaid after fourth anniversary of funding	0.50%
Interest expense		$ 2,200,000	$ 4,400,000
Biopharma Credit Investments V (Master) LP | Keryx | Term Loan | Collateral Agent, Pharmakon | Three-month LIBOR
Line of Credit Facility [Line Items]
Basis spread on floating interest rate	7.50%
Biopharma Credit Investments V (Master) LP | Keryx | Term Loan | Collateral Agent, Pharmakon | LIBOR
Line of Credit Facility [Line Items]
Debt instrument, floor rate	2.00%
Debt instrument, cap rate	3.35%
Biopharma Credit Investments V (Master) LP | Keryx | Term Loan | Collateral Agent, Pharmakon | Tranche A
Line of Credit Facility [Line Items]
Line of credit, maximum borrowing capacity	$ 80,000,000.0
Amount drawn under credit facility, date			Nov. 25, 2019
Term loan, net of facility fees, lender expenses and issuance costs					$ 77,300,000
Biopharma Credit Investments V (Master) LP | Keryx | Term Loan | Collateral Agent, Pharmakon | Tranche B
Line of Credit Facility [Line Items]
Line of credit, maximum borrowing capacity	$ 20,000,000.0
Last date to draw amount under credit facility			Dec. 31, 2020

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Warrant - Additional Information (Details) - Janssen Agreement - USD ($) $ / shares in Units, $ in Millions	6 Months Ended
	Jun. 30, 2020	Feb. 28, 2017
Class of Warrant or Right [Line Items]
Warrant to purchase common stock (in shares)		509,611
Exercise price (in dollars per share)		$ 9.81
Fair value of warrant at issuance	$ 3.4
Warrant expiration date	Feb. 09, 2022

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Stockholders' Equity - Additional Information (Details)								3 Months Ended			6 Months Ended		12 Months Ended
	May 19, 2020 USD ($) $ / shares shares	May 19, 2020 USD ($) $ / shares	May 14, 2020 USD ($) $ / shares shares	Mar. 12, 2020 USD ($)	Feb. 28, 2020 shares	Nov. 12, 2019 USD ($)	Dec. 12, 2018 shares	Jun. 30, 2020 USD ($) $ / shares shares	Mar. 31, 2020 USD ($) shares	Jun. 30, 2019 USD ($) shares	Jun. 30, 2020 USD ($) installment $ / shares shares	Jun. 30, 2019 USD ($) shares	Dec. 31, 2019 USD ($) $ / shares shares	Jun. 04, 2020 shares	Mar. 31, 2019 shares	Dec. 31, 2018 shares	Feb. 28, 2014 shares
Class of Stock [Line Items]
Common stock, shares authorized (in shares)								350,000,000			350,000,000		175,000,000	175,000,000
Common stock, par value (in dollars per share) | $ / shares								$ 0.00001			$ 0.00001		$ 0.00001
Common stock, shares issued (in shares)								143,129,409			143,129,409		121,674,568
Common stock, shares outstanding (in shares)								143,129,409			143,129,409		121,674,568
Preferred stock, shares authorized (in shares)								25,000,000			25,000,000		25,000,000
Preferred stock, par value (in dollars per share) | $ / shares								$ 0.00001			$ 0.00001		$ 0.00001
Preferred stock, shares issued (in shares)								0			0		0
Preferred stock, shares outstanding (in shares)								0			0		0
Proceeds from the issuance of common stock, net of issuance costs | $											$ 198,883,000	$ 9,035,000
Common stock, shares reserved for future issuance (in shares)								24,926,906			24,926,906		21,403,890
Stock-based compensation expense | $								$ 6,864,000		$ 2,284,000	$ 11,780,000	4,378,000
Follow-On Public Offering
Class of Stock [Line Items]
Number of shares sold in offering (in shares)			11,000,000
Offering price per share (in dollars per share) | $ / shares			$ 12.00
Aggregate net proceeds from offering | $		$ 142,400,000	$ 123,800,000
Over-Allotment Option
Class of Stock [Line Items]
Number of shares sold in offering (in shares)	1,650,000
Offering price per share (in dollars per share) | $ / shares	$ 12.00	$ 12.00
Aggregate net proceeds from offering | $	$ 18,600,000
Inducement Award Program
Class of Stock [Line Items]
Number of shares granted (in shares)											786,750
Number of shares outstanding (in shares)								786,750			786,750
Inducement Award Program | Employees
Class of Stock [Line Items]
Number of shares granted (in shares)											786,750
Stock options
Class of Stock [Line Items]
Number of shares issued (in shares)					1,714,800
Stock-based compensation description											Options vest either 100% on the first anniversary of the grant date or in installments of (i) 25% at the one year anniversary and (ii) 12 equal quarterly installments beginning after the one year anniversary of the grant date, subject to the individual’s continuous service with the Company
Options expiration after the date of grant											10 years
Stock-based compensation expense | $								$ 2,366,000		1,073,000	$ 3,983,000	$ 2,185,000
Stock options | Share-based Compensation Award, Tranche, First Anniversary of Grant Date
Class of Stock [Line Items]
Vesting percentage											100.00%
Stock options | Share Based Compensation Award Tranche One
Class of Stock [Line Items]
Vesting periods											1 year
Vesting percentage											25.00%
Stock options | Share Based Compensation Award Tranche Two
Class of Stock [Line Items]
Number of equal quarterly installments | installment											12
Performance-Based Stock Options
Class of Stock [Line Items]
Number of shares granted (in shares)											0	0
Number of shares outstanding (in shares)								0			0		46,790
Vesting percentage, Following achievement of performance condition							50.00%
Performance-Based Stock Options | Keryx Biopharmaceuticals, Inc. | Merger Agreement
Class of Stock [Line Items]
Number of shares granted (in shares)							233,954
Restricted stock units
Class of Stock [Line Items]
Stock-based compensation description											Generally, RSUs granted by the Company vest in one of the following ways: (i) 100% of each RSU grant vests on either the first or the third anniversary of the grant date, (ii) one third of each RSU grant vests on the first, second and third anniversaries of the grant date, subject, in each case, to the individual’s continued service through the applicable vesting date, or (iii) 50% of each RSU grant vests on the first anniversary and 25% of each RSU grant vests in 6 months increment after the one year anniversary of the grant date.
Stock-based compensation expense | $								$ 4,344,000		1,168,000	$ 7,486,000	$ 2,102,000
Restricted stock units | Share-Based Payment Arrangement, Tranche One, First Anniversary After Grant Date, Subjected To Individual Continued Service
Class of Stock [Line Items]
Vesting percentage											33.33%
Restricted stock units | Share-Based Payment Arrangement, Tranche Two, Second Anniversary After Grant Date, Subjected To Individual Continued Service
Class of Stock [Line Items]
Vesting percentage											33.33%
Restricted stock units | Share-Based Payment Arrangement, Tranche Three, Third Anniversary After Grant Date, Subjected To Individual Continued Service
Class of Stock [Line Items]
Vesting percentage											33.33%
Service-Based Restricted Stock Units
Class of Stock [Line Items]
Number of shares granted (in shares)					2,268,000
Stock-based compensation expense | $								4,200,000		1,200,000	$ 7,200,000	2,100,000
Service-Based Restricted Stock Units | Share-based Compensation Award, Tranche, First Or Third Anniversary of Grant Date
Class of Stock [Line Items]
Vesting percentage											100.00%
Service-Based Restricted Stock Units | Share Based Compensation Award Tranche One
Class of Stock [Line Items]
Vesting percentage											50.00%
Service-Based Restricted Stock Units | Share Based Compensation Award Tranche Two
Class of Stock [Line Items]
Vesting periods											6 months
Vesting percentage											25.00%
Performance Based Restricted Stock Unit
Class of Stock [Line Items]
Number of shares granted (in shares)					479,000
Stock-based compensation expense | $								$ 200,000		$ 0	$ 300,000	$ 0
Common Stock
Class of Stock [Line Items]
Common stock, shares outstanding (in shares)								143,129,409	130,251,440	118,787,301	143,129,409	118,787,301	121,674,568		117,122,262	116,887,518
Issuance of common stock, net of issuance costs (in shares)								12,650,000	7,973,967	1,384,520
Maximum | Stock options
Class of Stock [Line Items]
Vesting periods											48 months
Maximum | Performance-Based Stock Options
Class of Stock [Line Items]
Potential share issuable percentage							100.00%
Vesting percentage, upon achievement of performance condition							50.00%
Maximum | Restricted stock units
Class of Stock [Line Items]
Vesting periods											3 years
Minimum | Stock options
Class of Stock [Line Items]
Vesting periods											12 months
Minimum | Performance-Based Stock Options
Class of Stock [Line Items]
Potential share issuable percentage							0.00%
Minimum | Restricted stock units
Class of Stock [Line Items]
Vesting periods											1 year
At The Market Equity Offering Program
Class of Stock [Line Items]
Common stock sales agreement amount | $								$ 0			$ 0
At The Market Equity Offering Program | Common Stock
Class of Stock [Line Items]
Issuance of common stock, net of issuance costs (in shares)									7,973,967				2,684,392
Proceeds from the issuance of common stock, net of issuance costs | $									$ 56,700,000				$ 16,800,000
At The Market Equity Offering Program | Maximum
Class of Stock [Line Items]
Common stock sales agreement amount | $				$ 65,000,000.0		$ 75,000,000.0
2014 Plans
Class of Stock [Line Items]
Common stock, shares reserved for future issuance (in shares)																	1,785,000
Incremental rate at which the shares reserved for issuance increase											3.00%
2014 Plans | Stock options | Employees
Class of Stock [Line Items]
Number of shares granted (in shares)											1,714,800
2014 Plans | Stock options | Director
Class of Stock [Line Items]
Number of shares granted (in shares)											220,900
2014 Plans | Restricted stock units | Employees
Class of Stock [Line Items]
Number of shares granted (in shares)											2,367,500
2014 Plans | Restricted stock units | Director
Class of Stock [Line Items]
Number of shares granted (in shares)											95,900
2014 Plans | Performance Based Restricted Stock Unit | Employees
Class of Stock [Line Items]
Number of shares granted (in shares)											479,000
2014 Employee Stock Purchase Plan
Class of Stock [Line Items]
Common stock, shares reserved for future issuance (in shares)								5,600,968			5,600,968
Offering period											6 months
Purchase price at the end of offering period											85.00%
Number of shares issued (in shares)											115,024
Stock-based compensation expense | $								$ 154,000		$ 43,000	$ 311,000	$ 91,000

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Stockholders' Equity - Summary of Reserved Shares of Common Stock for Future Issuance (Details) - shares	Jan. 01, 2020	Jun. 06, 2019	Jan. 01, 2019	Dec. 12, 2018	Feb. 28, 2018	Jan. 01, 2018	Feb. 28, 2017	Jun. 30, 2020	Dec. 31, 2019	Jan. 30, 2019	Feb. 28, 2016	Feb. 28, 2014
Class of Stock [Line Items]
Common stock, shares reserved for future issuance (in shares)								24,926,906	21,403,890
Warrant To Purchase Common Stock
Class of Stock [Line Items]
Common stock, shares reserved for future issuance (in shares)								509,611	509,611
Common Stock Options and RSUs Outstanding
Class of Stock [Line Items]
Common stock, shares reserved for future issuance (in shares)								16,032,074	12,195,031
Shares Available for Issuance Under Akebia Equity
Class of Stock [Line Items]
Common stock, shares reserved for future issuance (in shares)								2,784,253	2,983,256
2014 Plans
Class of Stock [Line Items]
Common stock, shares reserved for future issuance (in shares)												1,785,000
Increase in common stock, shares reserved for future issuance (in shares)	4,031,376		3,801,198	2,323,213		1,575,329
Inducement Award Program
Class of Stock [Line Items]
Common stock, shares reserved for future issuance (in shares)										3,150,000
Shares Available for Issuance Under the ESPP
Class of Stock [Line Items]
Common stock, shares reserved for future issuance (in shares)								5,600,968	5,715,992
Increase in common stock, shares reserved for future issuance (in shares)		5,200,000			0		0
Maximum aggregate number of shares available for purchase (in shares)											739,611

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Stockholders Equity - Stock-Based Compensation Expense Related to Share-Based Awards (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	$ 6,864	$ 2,284	$ 11,780	$ 4,378
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	1,716	684	3,258	1,562
Selling, general and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	$ 5,148	$ 1,600	$ 8,522	$ 2,816

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Stockholders Equity - Schedule of Compensation Expense by Type of Award (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	$ 6,864	$ 2,284	$ 11,780	$ 4,378
Stock options
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	2,366	1,073	3,983	2,185
Restricted stock units
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	4,344	1,168	7,486	2,102
Employee stock purchase plan
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	$ 154	$ 43	$ 311	$ 91

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Commitments and Contingencies - Additional Information (Details)				1 Months Ended					3 Months Ended		6 Months Ended
	Apr. 02, 2020	Apr. 09, 2019	Jan. 01, 2017 USD ($)	Aug. 06, 2020 USD ($)	Sep. 30, 2019	Feb. 28, 2019 USD ($)	Apr. 30, 2018 ft²	Jul. 31, 2016 USD ($) ft²	Jun. 30, 2020 USD ($) ft² extensionOption	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) ft² extensionOption	Jun. 30, 2019 USD ($)	Aug. 10, 2020 USD ($)	Dec. 12, 2018 USD ($)
Commitments And Contingencies [Line Items]
Lessee, operating lease, residual value guarantee, description											The lease agreements do not contain residual value guarantees.
Lessee, operating lease, residual value guarantee											false
Operating lease, cost									$ 1,600,000	$ 1,600,000	$ 3,300,000	$ 3,300,000
Operating lease, payments									1,800,000	$ 1,700,000	3,500,000	3,400,000
Increase in excess inventory purchase commitments											$ 10,954,000	$ 0
Supply agreement description											The Esteve Agreement has an initial term of four years, beginning April 9, 2019 and ending April 9, 2023
Total remaining contract costs									23,200,000		$ 23,200,000
Contract cost incurred in research and development activities											68,100,000
Supply Agreement, Patheon Inc.
Commitments And Contingencies [Line Items]
Minimum purchase commitment									400,000		$ 400,000
Subsequent Event | Supply Agreement, Patheon Inc.
Commitments And Contingencies [Line Items]
Minimum purchase commitment				$ 1,300,000
BioVectra Inc
Commitments And Contingencies [Line Items]
Agreement expiration year											2026
Description of termination of agreement prior to contract term											The Company may terminate the BioVectra Agreement prior to the expiration of the contract term, which could result in early termination fee.
Cost of purchased minimum quantity product									127,000,000.0		$ 127,000,000.0
Preliminary fair value of the off-market element														$ 29,500,000
Increase in excess inventory purchase commitments									11,000,000.0
Inventory purchase commitments									41,500,000		41,500,000
Accretion expense											1,000,000.0
Siegfried Evionnaz SA
Commitments And Contingencies [Line Items]
Cost of purchased minimum quantity product									51,800,000		$ 51,800,000
Agreement expiration date											Dec. 31, 2021
Agreement renewal term termination											1 year
Agreement early termination											Dec. 31, 2021
Esteve Química, S.A
Commitments And Contingencies [Line Items]
Initial term of supply agreement		4 years
Minimum supply commitment									$ 13,600,000		$ 13,600,000
Esteve Química, S.A | Subsequent Event
Commitments And Contingencies [Line Items]
Minimum supply commitment													$ 23,900,000
STA Pharmaceutical Hong Kong Limited
Commitments And Contingencies [Line Items]
Minimum purchase commitment, initial term	4 years
Minimum purchase commitment through fourth quarter of 2021											$ 0
STA Pharmaceutical Hong Kong Limited | Subsequent Event
Commitments And Contingencies [Line Items]
Minimum purchase commitment through fourth quarter of 2021				$ 44,700,000
Minimum
Commitments And Contingencies [Line Items]
Operating lease, incremental borrowing rates based on remaining lease term									5.91%		5.91%
Operating lease, remaining lease term									1 year 5 months 1 day		1 year 5 months 1 day
Maximum
Commitments And Contingencies [Line Items]
Operating lease, incremental borrowing rates based on remaining lease term									6.94%		6.94%
Operating lease, remaining lease term									6 years 2 months 12 days		6 years 2 months 12 days
Keryx Biopharmaceuticals, Inc.
Commitments And Contingencies [Line Items]
Preliminary fair value of the off-market element														$ 29,510,000
Cambridge
Commitments And Contingencies [Line Items]
Area of property leased (in square feet) | ft²							65,167	45,362
Annual lease expense								$ 242,000
Monthly lease expense			$ 22,000
Operating lease payments commencement date			Jan. 01, 2017
Cambridge | Letter of Credit | Other current assets
Commitments And Contingencies [Line Items]
Total security deposit in connection with lease									$ 1,600,000		$ 1,600,000
Cambridge | Office Space
Commitments And Contingencies [Line Items]
Area of property leased (in square feet) | ft²							19,805
Monthly lease expense						$ 135,000
Operating lease payments commencement date							Feb. 28, 2019
Leased property delivered, date							2018-09
Leased property subject to annual rent escalations, commencement date							2019-09
Lease expiration date											Sep. 11, 2026
Lease period, number of extension options | extensionOption									1		1
Lease extension period									5 years		5 years
Cambridge | Lab Space
Commitments And Contingencies [Line Items]
Lease expiration date											Nov. 30, 2021
Lease period, number of extension options | extensionOption									1		1
Lease extension period									2 years		2 years
Boston | Keryx Biopharmaceuticals, Inc. | Letter of Credit | Other current assets
Commitments And Contingencies [Line Items]
Total security deposit in connection with lease									$ 800,000		$ 800,000
Boston | Office Space
Commitments And Contingencies [Line Items]
Area of property leased (in square feet) | ft²									27,300		27,300
Monthly lease expense											$ 136,000
Lease expiration month year											2023-02
Boston | Office Space | Keryx Biopharmaceuticals, Inc.
Commitments And Contingencies [Line Items]
Lease expiration date											Feb. 28, 2023
Lease period, number of extension options | extensionOption									1		1
Lease extension period									5 years		5 years
Operating sublease commencement date					Oct. 16, 2019
Sublease expiration date					Feb. 28, 2023
Sublease rental income									$ 500,000		$ 900,000

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Commitments and Contingencies - Schedule of Undiscounted Minimum Rental Commitments Under Non-cancelable Leases (Details) $ in Thousands	Jun. 30, 2020 USD ($)
Operating Leases
Remaining 2020	$ 3,068
2021	7,064
2022	6,735
2023	5,347
2024	5,116
Thereafter	8,818
Total	36,148
Lease Payments to be Received from Sublease
Remaining 2020	888
2021	1,797
2022	1,824
2023	307
Lessor, Operating Lease, Payment to be Received, Year Four	0
Lessor, Operating Lease, Payment to be Received, Due After Year Four	0
Total	4,816
Net Operating Lease Payments
Remaining 2020	2,180
2021	5,267
2022	4,911
2023	5,040
2024	5,116
Thereafter	8,818
Total	$ 31,332

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Commitments and Contingencies - Schedule of Undiscounted Minimum Rental Commitments Under Non-cancelable Leases and Operating Leases Liabilities (Details) $ in Thousands	Jun. 30, 2020 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Total	$ 36,148
Present value adjustment using incremental borrowing rate	(6,079)
Operating lease liabilities	$ 30,069

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Net Loss per Share - Anti-Dilutive Securities Excluded from Calculation of Diluted Net Loss per Share (Details) - shares	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from calculation of diluted net loss per share (in shares)	16,541,685	10,227,177
Warrant
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from calculation of diluted net loss per share (in shares)	509,611	509,611
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from calculation of diluted net loss per share (in shares)	9,632,240	7,779,744
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from calculation of diluted net loss per share (in shares)	6,399,834	1,937,822