10-Q/A

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q/A

Amendment No. 1

(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, 2022

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: 001-33004

Acer Therapeutics Inc.

(Exact name of registrant as specified in its charter)

Delaware	One Gateway Center, Suite 356 300 Washington Street	32-0426967
(State or other jurisdiction of	Newton, MA 02458	(I.R.S. Employer
Incorporation or organization)	(Address of principal executive	Identification No.)
	offices and zip code)

(844) 902-6100

Registrant’s telephone number, including area code

Securities registered pursuant to Section 12(b) of the Act:
Title of Each Class	Trading Symbol	Name of Each Exchange on Which Registered
Common Stock, $0.0001 par value per share	ACER	The Nasdaq Stock Market LLC

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  ☑  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    ☐ No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, 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	☐
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 the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ☐    No ☑

As of August 1, 2022, there were 15,942,749 shares of the issuer’s Common Stock outstanding.

EXPLANATORY NOTE

Acer Therapeutics Inc. (the "Company" or "we," "our" or "us") is filing this Amendment No. 1 on Form 10-Q/A ("Form 10-Q/A") to amend its Quarterly Report on Form 10-Q, originally filed with the U.S. Securities and Exchange Commission (“SEC”) on August 15, 2022 (the "Original Form 10-Q"), to restate certain items presented in our Original Form 10-Q. This Form 10-Q/A includes restatement of our unaudited condensed interim financial statements as of and for the three and six months ended June 30, 2022. We are also providing an update in our disclosures in Part I, Item 4, “Controls and Procedures,” of this Form 10-Q/A regarding a material weakness in internal control over financial reporting.

Background of Restatement

On November 10, 2022, the Company, after discussion with its independent registered public accounting firm and the Audit Committee of its Board of Directors (the “Audit Committee”), concluded that it incorrectly applied certain interpretive accounting guidance related to ASC 260, Earnings Per Share (the “Guidance”), which affected the Company’s presentation of its diluted earnings per share (“EPS”) calculation.

As a general rule, where shares issuable from convertible instruments are “anti-dilutive” (e.g., inclusion of such shares in a diluted EPS calculation on an “if converted” basis would have the effect of decreasing the loss per share), diluted EPS calculations exclude such shares.  For companies (like the Company) which are experiencing losses, this is a common result.  A different outcome is possible, however, in certain circumstances involving a contract which is (i) reported as an asset or liability for accounting purposes and recorded at fair value, where changes in fair value occurring from period to period are recorded in earnings, and (ii) convertible into shares.  The Company has such a contract – i.e., the Company’s secured convertible notes in an aggregate original principal amount of $6 million issued to MAM Aardvark, LLC and Marathon Healthcare Finance Fund, L.P. (the “Secured Convertible Notes”).

In the Original Form 10-Q, the Company excluded from its diluted EPS calculation for the three and six months ended June 30, 2022, the shares issuable upon a conversion of the Secured Convertible Notes – i.e., the Secured Convertible Notes was not treated on an “if converted” basis.  The Company also recognized a reduction, during the three and six months ended June 30, 2022, in the fair value of the Secured Convertible Notes of $2.6 million and $1.7 million, respectively, through non-operating income in the statement of operations (i.e., the Company recognized a “gain” from a reduction in the fair value of this debt).  Pursuant to the Guidance, if the change in loss that would result if a contract had been reported as an equity instrument for accounting purposes during a period would be dilutive (i.e., increasing the loss per share in the Company’s situation), then the “if converted” method is applied.  In the instance of the Secured Convertible Notes at and for the three and six months ended June 30, 2022, applying the “if converted” method would have resulted in the addition of 2,407,693 and 1,577,900 weighted average shares to the denominator of the Company’s diluted EPS calculation for the three and six months, respectively. These shares are with respect to the original principal amount of the Secured Convertible Notes, and the assumed conversion of accrued interest owed at the beginning of the period, which alone would have had the common “anti-dilutive” result.  However, applying such method also would have resulted in elimination from the diluted EPS calculation numerator of the $2.6 million and $1.7 million “gain” from the reduction in the fair value of the Secured Convertible Notes during the three and six months ended June 30, 2022, respectively. These share and gain adjustments distill an overall net dilutive effect on the Company’s diluted EPS calculation. Thus, pursuant to the Guidance, “if converted” treatment should have been applied to the Secured Convertible Notes for the three and six months ended June 30, 2022.

The Original Form 10-Q, including in Notes 7 and 10 in the Notes to Unaudited Condensed Interim Financial Statements, included disclosures regarding (i) 2.4 million shares of the Company’s common stock issuable upon a conversion of the original principal amount of the Secured Convertible Notes and the assumed conversion of accrued interest owed at the beginning of the period, (ii) the reduction, during the three and six months ended June 30, 2022, in the fair value of the Secured Convertible Notes of $2.6 million and $1.7 million, respectively and (iii) the Company’s calculation of its diluted EPS without the inclusion of shares issuable upon a conversion of the Secured Convertible Notes as if it had been converted at the beginning of the period.

The restatement reflects the addition of “if converted” treatment of the Secured Convertible Notes in the Company’s calculation of its diluted EPS as well as related information in the Notes to Unaudited Condensed Interim Financial Statements. The following table presents the effects of the error correction on the Company’s Unaudited Condensed Interim Statement of Operations for the three and six months ended June 30, 2022, by showing basic net loss per share as previously reported, and additional disclosure of diluted loss per share and diluted weighted average common shares outstanding applying the “if converted” method to the Secured Convertible Notes as described above.

	Three Months Ended June 30,						Six Months Ended June 30,
	2022			2021			2022			2021
Net loss per share – basic (as restated)	$	(0.17	)	$	(0.21	)	$	(0.80	)	$	(0.54	)
Weighted average common shares outstanding – basic (as restated)		15,273,707			14,310,244			14,794,637			14,225,551
Net loss per share – diluted (as restated) (1)	$	(0.30	)	$	(0.21	)	$	(0.83	)	$	(0.54	)
Weighted average common shares outstanding – diluted (as restated)		17,681,400			14,310,244			16,372,537			14,225,551

(1) In calculating diluted net loss per share, we excluded the impact of changes in the fair value of the Secured Convertible Notes of $2.6 million and $1.7 million, for the three and six months ended June 30, 2022, respectively. Included in the denominator using the “if-converted” method during the three and six months ended June 30, 2022, are the 2,407,693 shares and 1,577,900 shares, respectively, associated with the original principal amount of the Secured Convertible Notes and the assumed conversion of accrued interest owed at the beginning of the period.

Refer to Note 1, “Nature Of Operations And Basis Of Presentation,” Note 2, “Significant Accounting Policies, Basic and Diluted Net Loss per Common Share,” and Note 10, “Net Loss Per Share,” to the Unaudited Condensed Financial Statements included in this Form 10-Q/A for more information regarding the impact of correcting the error on the Company’s consolidated financial statements.

The Audit Committee concluded that the previously issued Unaudited Condensed Financial Statements and financial data covering the three and six months ended June 30, 2022 contained in the Original Form 10-Q required restatement and should no longer be relied upon. See the Company’s Current Report on Form 8-K filed with the SEC on November 14, 2022 for additional details.

Internal Control Over Financial Reporting

The Company’s management has determined that there were deficiencies in its internal control over financial reporting that constituted a material weakness at June 30, 2022. For a discussion of management’s consideration of its disclosure controls and procedures and the material weakness in its internal control over financial reporting, see Part I, Item 4, “Controls and Procedures,” included in this Form 10-Q/A.

The following items included in the Original Form 10-Q are amended by this Form 10-Q/A.

• •Summary Risk Factors

• •Part I, Item 1 - Financial Statements and Notes

• •Part I, Item 4 - Controls and Procedures

• •Part II, Item 1A – Risk Factors

This Form 10-Q/A is presented as of the filing date of the Original Form 10-Q and does not reflect events occurring after that date, nor modify or update the information contained therein other than as required to correct the error noted above and record the adjustment described above. Accordingly, this Form 10-Q/A should be read in conjunction with the Company’s filings with the SEC subsequent to the filing of the Original Form 10-Q.

As required by Rule 12b-15 under the Securities Exchange Act of 1934, as amended, currently dated certifications by the Company’s Principal Executive Officer and Principal Financial Officer are filed as Exhibits 31.1, 31.2, 32.1 and 32.2 to this Form 10-Q/A.

ACER THERAPEUTICS INC.

For the six months ended June 30, 2022

INDEX

		Page
SUMMARY RISK FACTORS		1
PART I – FINANCIAL INFORMATION
Item 1.	Financial Statements (Unaudited)
	Condensed Balance Sheets as of June 30, 2022 and December 31, 2021	3
	Condensed Statements of Operations: For the three and six months ended June 30, 2022 and 2021	4
	Condensed Statements of Changes in Stockholders’ (Deficit) Equity: For the three and six months ended June 30, 2022 and 2021	5
	Condensed Statements of Cash Flows: For the six months ended June 30, 2022 and 2021	6
	Notes to Condensed Financial Statements	7
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	30
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	43
Item 4.	Controls and Procedures	43
PART II – OTHER INFORMATION
Item 1.	Legal Proceedings	46
Item 1A.	Risk Factors	46
Item 6.	Exhibits	86
Signatures		87

SUMMARY RISK FACTORS (AS RESTATED)

Our business is subject to varying degrees of risk and uncertainty. Investors should consider the risks and uncertainties summarized below, as well as the risks and uncertainties discussed in Part II, Item 1A, “Risk Factors” of this Quarterly Report on Form 10-Q. Investors should also refer to the other information contained or incorporated by reference in this Quarterly Report on Form 10-Q for the quarter ended June 30, 2022, including our condensed financial statements and related notes, and our other filings made from time to time with the Securities and Exchange Commission. Our business operations could also be affected by factors that we currently consider to be immaterial or that are unknown to us at the present time. If any of these risks occur, our business, financial condition, and results of operations could be materially and adversely affected, and the trading price of our common stock could decline.

• We will require additional financing to complete development and seek to obtain marketing approval of our product candidates and, if approved, to commercialize our product candidates, and a failure to obtain this necessary capital when needed on acceptable terms, or at all, could force us to delay, limit, reduce or terminate our product development, other operations or commercialization efforts

• Substantial doubt exists as to our ability to continue as a going concern. Unless we are able to raise additional capital to finance our operations, our long-term business plan may not be accomplished, and we may be forced to cease, reduce, or delay operations

• The requirement that we repay in cash the outstanding principal balance and accrued interest on our senior secured term loan facility in an aggregate principal amount of $6.5 million with the lenders party thereto and SWK Funding LLC, as the agent (the “Bridge Loan”), and, under certain circumstances, secured convertible notes in an aggregate principal amount of $6 million issued to MAM Aardvark, LLC and Marathon Healthcare Finance Fund, L.P. (the “Secured Convertible Notes”), and the restrictive covenants contained in these debt instruments, could adversely affect our business plans, liquidity, financial condition and results of operations and may prevent us from taking actions that we would otherwise consider to be in our best interests

• Our initial New Drug Application (“NDA”) for ACER-001 (sodium phenylbutyrate) for oral suspension for the treatment of patients with urea cycle disorders (“UCDs”) received a Complete Response Letter, although our resubmission of the NDA has been accepted for substantive review by the United States Food and Drug Administration (“FDA”) with a January 15, 2023 Prescription Drug User Fee Act (“PDUFA”) target action date

• The marketing approval processes of FDA and comparable foreign authorities are lengthy, time-consuming and inherently unpredictable, and if we are ultimately unable to obtain marketing approval for our product candidates, including ACER-001, our business will be substantially harmed

• If we are unable to obtain approval under Section 505(b)(2) of the FFDCA or if we are required to generate additional data related to safety or efficacy in order to seek approval under Section 505(b)(2), we may be unable to meet our anticipated development and commercialization timelines, and could decide not to pursue further development, depending on the expected time, cost, and risks associated with generating any such additional data, which could have a negative impact on the success of our product development efforts

• We entered into the Secured Convertible Notes and Bridge Loan which provided us with initial loan proceeds of $12.5 million, less fees and costs. In return for those funds and commitments, the Secured Convertible Notes and Bridge Loan require us to meet certain operating and financial covenants and place restrictions on our operating and financial flexibility. Some of those covenants and conditions may significantly restrict our ability to conduct our business

• We entered into the Collaboration and License Agreement (the “Collaboration Agreement”) with Relief Therapeutics Holding AG (“Relief”) which allows Relief to control the development and commercialization of ACER-001 for the treatment of UCDs and Maple Syrup Urine Disease (“MSUD”) in territories other than the United States (“U.S.”), Canada, Brazil, Turkey and Japan, which may impact our ability to generate revenues and achieve or sustain profitability. In addition, we are required to provide assistance to Relief in the performance of their contractual obligations, which may distract us from achieving our objectives

• Our efforts to raise additional funds could be affected by negative conditions in the capital markets, which in recent months have been especially challenging, and there are numerous companies in the pharmaceutical and biotech sectors who are seeking additional capital from many of the same sources, which may also limit the amount of capital, if any, available to us

• We have identified material weaknesses in our internal control over financial reporting that resulted in a restatement of our unaudited condensed interim financial statements for the three months ended March 31, 2021 and June 30, 2021, and another restatement of our unaudited condensed interim financial statements for the three and six months ended June 30, 2022. These material weaknesses, if not remediated, could again adversely affect our ability to report our results of operations and financial condition accurately and in a timely manner

1

• Funding from our equity line purchase agreement with Lincoln Park Capital Fund, LLC (“Lincoln Park”) and our “at-the-market” (“ATM”) facility with JonesTrading Institutional Services LLC (“Jones Trading”) may be limited or may be insufficient to fund our operations or implement our strategy

• We have a limited operating history and have incurred significant losses since our inception and anticipate that we will continue to incur losses for the foreseeable future and may never achieve or maintain profitability. The absence of any commercial sales and our limited operating history make it difficult to assess our future viability

• We currently have no source of commercial product sales revenue and may never be profitable

• We face risks related to health epidemics including but not limited to the COVID-19 pandemic which could adversely affect our business

• The number of shares registered for resale on behalf of the holders of the Secured Convertible Notes is significant in relation to our trading volume. Should any of those holders elect to sell all or a significant portion of their holdings, it could put downward pressure on our stock price

• A substantial number of shares of our common stock may be issued pursuant to the terms of the Secured Convertible Notes, which could cause the price of our common stock to decline

• Clinical drug development involves a lengthy and expensive process with an uncertain outcome, particularly for product candidates for rara diseases. Our ability to successfully design and complete clinical trials is uncertain

• Our product candidates may cause undesirable adverse effects or have other properties that could delay or prevent their marketing approval, limit the commercial profile of an approved label, or result in significant negative consequences following marketing approval, if obtained

• Even if we obtain the required regulatory approvals in the U.S. and other territories, the commercial success of our product candidates will depend on, among other factors, market awareness and acceptance of our product candidates

• We face substantial competition, which may result in others discovering, developing or commercializing products for our targeted indications before, or more successfully, than we do

• We rely on third-party suppliers and other third parties for manufacture of our product candidates and our dependence on these third parties may impair or delay the advancement of our research and development programs and the development of our product candidates

• We plan to rely on third parties to conduct clinical trials for our product candidates. If these third parties do not successfully carry out their contractual duties or meet expected deadlines, it may cause delays in commencing and completing clinical trials of our product candidates or we may be unable to obtain marketing approval for or commercialize our product candidates

• Our proprietary rights may not adequately protect our technologies and product candidates

• We are a party to license or similar agreements under which we license intellectual property, data, and/or receive commercialization rights. If we fail to comply with obligations in such agreements or otherwise experience disruptions to our business relationships with our licensors, we could lose license rights that are important to our business; any termination of such agreements would adversely affect our business

• Our share price is very volatile, may not reflect the underlying value of our net assets or business prospects, and you may not be able to resell your shares at a profit or at all

• We have been notified that we do not comply with the Nasdaq continued listing requirements. If we are unable to regain and maintain compliance with the continued listing requirements of the Nasdaq Capital Market, our common stock could be delisted, which could affect our common stock’s market price and liquidity and reduce our ability to raise capital

• Future sales of our common stock or the issuance of debt or other equity securities, which may be senior to the common stock, could cause dilution and could cause the price of our stock to decline

2

PART I - FINANCIAL INFORMATION

Item 1. Financial Statements.

ACER THERAPEUTICS INC.

CONDENSED BALANCE SHEETS

(Unaudited)

	June 30,			December 31,
	2022			2021
Assets
Current assets:
Cash and cash equivalents	$	14,469,744		$	12,710,762
Collaboration receivable		—			5,000,000
Prepaid expenses		666,318			1,094,229
Other current assets		65,061			9,283,625
Total current assets		15,201,123			28,088,616
Property and equipment, net		101,582			114,112
Other assets:
Goodwill		7,647,267			7,647,267
Other non-current assets		292,918			406,956
Total assets	$	23,242,890		$	36,256,951
Liabilities and Stockholders’ Deficit
Current liabilities:
Accounts payable	$	3,491,991		$	1,405,734
Accrued expenses		5,567,964			2,428,193
Deferred collaboration funding, current		6,340,438			15,825,938
Other current liabilities		185,265			9,450,085
Bridge loan payable, current, at fair value		1,887,606			—
Total current liabilities		17,473,264			29,109,950
Deferred collaboration funding, non-current		7,868,731			8,661,109
Bridge loan payable non-current, at fair value		2,197,103			—
Convertible note payable, at fair value		4,321,200			—
Other non-current liabilities		166,134			209,497
Total liabilities		32,026,432			37,980,556
Commitments and Contingencies (Note 8)
Stockholders’ deficit:
Preferred stock, $0.0001 par value; authorized 10,000,000 shares;    none issued and outstanding		—			—
Common stock, $0.0001 par value; authorized 150,000,000 shares;    15,672,791 and 14,310,244 shares issued and outstanding at June 30,    2022 and December 31, 2021, respectively		1,567			1,431
Additional paid-in capital		117,570,885			112,784,918
Accumulated deficit		(126,355,994	)		(114,509,954	)
Total stockholders’ deficit		(8,783,542	)		(1,723,605	)
Total liabilities and stockholders’ deficit	$	23,242,890		$	36,256,951

The accompanying notes are an integral part of these unaudited condensed financial statements.

3

ACER THERAPEUTICS INC.

CONDENSED STATEMENTS OF OPERATIONS

FOR THE THREE AND SIX MONTHS ENDED JUNE 30, 2022 AND 2021

(Unaudited) (As Restated)

	Three Months Ended June 30,						Six Months Ended June 30,
	2022			2021			2022			2021
Revenue	$	—		$	—		$	—		$	900,000
Operating expenses:
Research and development (net of collaboration funding of $1,648,631 and $1,025,935 in the three months ended June 30, 2022 and 2021, respectively, and of $4,648,002 and $1,312,038 in the six months ended June 30, 2022 and 2021, respectively)		3,426,773			1,361,287			6,598,412			3,367,192
General and administrative (net of collaboration funding of $3,257,701 and $602,534 in the three months ended June 30, 2022 and 2021, respectively, and of $5,629,876 and $602,534 in the six months ended June 30, 2022 and 2021, respectively)		3,638,073			2,268,508			7,513,674			5,782,649
Total operating expenses		7,064,846			3,629,795			14,112,086			9,149,841
Loss from operations		(7,064,846	)		(3,629,795	)		(14,112,086	)		(8,249,841	)
Other income (expense), net:
Costs of debt issuance		(200,129	)		—			(1,368,194	)		—
Changes in fair value of debt instruments		4,729,460			—			3,767,060			—
Interest and other income (expense) , net		(139,234	)		564,914			(142,072	)		524,751
Foreign currency transaction gain (loss)		7,713			(4,156	)		9,252			44,748
Total other income (expense), net		4,397,810			560,758			2,266,046			569,499
Net loss	$	(2,667,036	)	$	(3,069,037	)	$	(11,846,040	)	$	(7,680,342	)
Net loss per share - basic (as restated)	$	(0.17	)	$	(0.21	)	$	(0.80	)	$	(0.54	)
Weighted average common shares outstanding - basic (as restated)		15,273,707			14,310,244			14,794,637			14,225,551
Net loss per share - diluted (as restated)	$	(0.30	)	$	(0.21	)	$	(0.83	)	$	(0.54	)
Weighted average common shares outstanding - diluted (as restated)		17,681,400			14,310,244			16,372,537			14,225,551

The accompanying notes are an integral part of these unaudited condensed financial statements.

4

ACER THERAPEUTICS INC.

CONDENSED STATEMENTS OF CHANGES IN STOCKHOLDERS’ (DEFICIT) EQUITY

FOR THE THREE AND SIX MONTHS ENDED JUNE 30, 2022 AND 2021

(Unaudited)

	Three and Six Months Ended June 30, 2022
	Common Stock				Additional Paid-in Capital		Accumulated Deficit			Total Stockholders’ Deficit
	Shares		Amount
Balance, December 31, 2021		14,310,244	$	1,431	$	112,784,918	$	(114,509,954	)	$	(1,723,605	)
Stock-based compensation		—		—		474,097		—			474,097
Proceeds allocated to SWK Warrant		—		—		327,031		—			327,031
Net loss		—		—		—		(9,179,004	)		(9,179,004	)
Balance, March 31, 2022		14,310,244		1,431		113,586,046		(123,688,958	)		(10,101,481	)
Issuance of common stock, net of issuance costs		1,362,547		136		3,524,062		—			3,524,198
Stock-based compensation		—		—		460,777		—			460,777
Net loss		—		—		—		(2,667,036	)		(2,667,036	)
Balance, June 30, 2022		15,672,791	$	1,567	$	117,570,885	$	(126,355,994	)	$	(8,783,542	)

	Three and Six Months Ended June 30, 2021
	Common stock				Additional Paid-in Capital		Accumulated Deficit			Total Stockholders’ Equity
	Shares		Amount
Balance, December 31, 2020		13,233,137	$	1,324	$	107,358,971	$	(99,135,961	)	$	8,224,334
Issuance of common stock, net of issuance costs		1,077,107		107		3,138,940		—			3,139,047
Stock-based compensation		—		—		559,436		—			559,436
Net loss		—		—		—		(4,611,305	)		(4,611,305	)
Balance, March 31, 2021		14,310,244		1,431		111,057,347		(103,747,266	)		7,311,512
Stock-based compensation		—		—		594,663		—			594,663
Net loss		—		—		—		(3,069,037	)		(3,069,037	)
Balance, June 30, 2021		14,310,244	$	1,431	$	111,652,010	$	(106,816,303	)	$	4,837,138

The accompanying notes are an integral part of these unaudited condensed financial statements.

5

ACER THERAPEUTICS INC.

CONDENSED STATEMENTS OF CASH FLOWS

FOR THE SIX MONTHS ENDED JUNE 30, 2022 AND 2021

(Unaudited)

	Six Months Ended June 30,
	2022			2021
Cash flows from operating activities:
Net loss	$	(11,846,040	)	$	(7,680,342	)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Stock-based compensation		934,874			1,154,099
Depreciation		38,796			32,637
Non-cash changes in fair value of debt		(3,767,060	)		—
Debt issuance costs recognized as expense		1,368,194			—
Gain on extinguishment of debt		—			(568,909	)
Non-cash interest expense		—			2,756
Loss on disposal of property and equipment, net		4,669			—
Changes in operating assets and liabilities
Collaboration receivable		5,000,000			—
Prepaid expenses		427,911			251,338
Other current assets		9,215,320			(9,395,172	)
Accounts payable		2,086,257			136,346
Accrued expenses		3,139,771			(2,281,814	)
Deferred collaboration funding		(10,277,878	)		18,191,292
Other current liabilities		(9,190,901	)		9,400,708
Net cash (used in) provided by operating activities		(12,866,087	)		9,242,939
Cash flows from investing activities:
Purchase of property and equipment		(30,935	)		(15,222	)
Net cash used in investing activities		(30,935	)		(15,222	)
Cash flows from financing activities:
Proceeds from issuance of common stock, net of issuance costs		3,524,198			3,139,047
Receipt of funds from Relief secured loans		—			4,000,000
Proceeds from Bridge Loan, net of warrant allocation and lender fees		6,013,148			—
Proceeds from Secured Convertible Notes, net of lender fees		5,516,556			—
Proceeds allocated to SWK Warrant based on valuation		327,031
Payment of debt and convertible debt issuance costs		(724,929	)		—
Net cash provided by financing activities		14,656,004			7,139,047
Net increase in cash and cash equivalents		1,758,982			16,366,764
Cash and cash equivalents, beginning of period		12,710,762			5,761,568
Cash and cash equivalents, end of period	$	14,469,744		$	22,128,332
Supplemental cash flow information:
Cash paid for interest	$	136,500		$	—
Non-cash financing activities:
Non-cash repayment of secured loan	$	—		$	4,000,000
Extinguishment of debt	$	—		$	568,909

The accompanying notes are an integral part of these unaudited condensed financial statements.

6

ACER THERAPEUTICS INC.

NOTES TO CONDENSED FINANCIAL STATEMENTS

(Unaudited)

1. NATURE OF OPERATIONS AND BASIS OF PRESENTATION

Business

Acer Therapeutics Inc., a Delaware corporation (the “Company”), is a pharmaceutical company focused on the acquisition, development, and commercialization of therapies for serious rare and life-threatening diseases with significant unmet medical needs. The Company’s pipeline includes four investigational programs: ACER-001 (sodium phenylbutyrate) for the treatment of various inborn errors of metabolism, including urea cycle disorders (“UCDs”) and Maple Syrup Urine Disease (“MSUD”); ACER-801 (osanetant) for the treatment of induced vasomotor symptoms (“iVMS”); EDSIVO™ (celiprolol) for the treatment of vascular Ehlers-Danlos syndrome (“vEDS”) in patients with a confirmed type III collagen (COL3A1) mutation; and ACER-2820 (emetine), a host-directed therapy against a variety of viruses, including cytomegalovirus, Zika, dengue, Ebola, and COVID-19. Each of the Company’s product candidates is believed to present a comparatively de-risked profile, having one or more of a favorable safety profile, clinical proof-of-concept data, mechanistic differentiation, and/or accelerated pathways for development through specific programs and procedures established by the United States (“U.S.”) Food and Drug Administration (“FDA”).

Since its inception, the Company has devoted substantially all of its efforts to business planning, research and development, recruiting management and technical staff, acquiring operating assets, and raising capital. The Company has generated revenue related to the collaboration and license agreement (the “Collaboration Agreement”) with Relief Therapeutics Holding AG (“Relief”) as described below but has not generated any product revenue to date and may never generate any product revenue in the future.

Liquidity 

The Company had an accumulated deficit of $126.4 million and cash and cash equivalents of $14.5 million as of June 30, 2022. Net cash used in operating activities was $12.9 million for the six months ended June 30, 2022.

On November 9, 2018, the Company entered into a sales agreement with Roth Capital Partners, LLC, and on March 18, 2020, an amended and restated sales agreement was entered into with JonesTrading Institutional Services LLC and Roth Capital Partners, LLC. The agreement provides a facility for the offer and sale of shares of common stock from time to time having an aggregate offering price of up to $50.0 million depending upon market demand, in transactions deemed to be an at-the-market (“ATM”) offering. The Company has no obligation to sell any shares of common stock pursuant to the agreement and may at any time suspend sales pursuant to the agreement. Each party may terminate the agreement at any time without liability. During the three and six months ended June 30, 2022, the Company sold 1,062,547 shares of common stock through its ATM facility at a gross sale price of $3.0719 per share, for gross proceeds of $3.3 million. Proceeds, net of $0.2 million of fees and offering costs, were $3.1 million. As of June 30, 2022, $36.7 million remained available under the Company’s ATM facility, subject to various limitations.

On April 30, 2020, the Company entered into an equity line purchase agreement and registration rights agreement pursuant to which Lincoln Park Capital Fund, LLC (“Lincoln Park”) has committed to purchase up to $15.0 million of the Company’s common stock. Under the terms and subject to the conditions of the purchase agreement, the Company has the right, but not the obligation, to sell to Lincoln Park, and Lincoln Park is obligated to purchase up to $15.0 million of the Company’s common stock, with $11.8 million obligation remaining as of June 30, 2022. Such sales of common stock by the Company will be subject to certain limitations, and may occur from time to time, at the Company’s sole discretion, over the 36-month period commencing on June 8, 2020. The number of shares the Company may sell to Lincoln Park on any single business day in a regular purchase is 50,000, but that amount may be increased up to 100,000 shares, depending upon the market price of the Company’s common stock at the time of sale and subject to a maximum limit of $1.0 million per regular purchase. The purchase price per share for each such regular purchase will be based on prevailing market prices of the Company’s common stock immediately preceding the time of sale as computed under the purchase agreement. In addition to regular purchases, the Company may also direct Lincoln Park to purchase other amounts as accelerated purchases or as additional accelerated purchases if the closing sale price of the common stock exceeds certain threshold prices as set forth in the purchase agreement. During the three and six months ended June 30, 2022, the Company sold 300,000 shares of common stock under its purchase agreement with Lincoln Park at a weighted average gross sale price of $1.25 per share, resulting in proceeds of $0.4 million. As of June 30, 2022, $11.8 million remained available under the Lincoln Park agreement, subject to various limitations.

On January 25, 2021, the Company entered into an option agreement (the “Option Agreement”) with Relief, pursuant to which the Company granted Relief an exclusive option (the “Exclusivity Option”) to pursue a potential collaboration and license arrangement with the Company for the development, regulatory approval and commercialization of ACER-001 for the treatment of various inborn errors of metabolism, including UCDs and MSUD. The Option Agreement provided a period of time up to June 30, 2021, for the parties to perform additional due diligence and to work toward negotiation and execution of a definitive agreement

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with respect to the potential collaboration for ACER‑001. In consideration for the grant of the Exclusivity Option, (i) the Company received from Relief an upfront nonrefundable payment of $1.0 million, (ii) Relief provided to the Company a 12-month secured loan in the principal amount of $4.0 million, as evidenced by a Promissory Note (the “Note”) the Company issued to Relief, and (iii) the Company granted Relief a security interest in all of its assets to secure performance of the Note, as evidenced by a Security Agreement (the “Security Agreement”). The Note was repayable in one lump sum within 12 months from issuance and bore interest at a rate equal to 6% per annum. If a definitive agreement with respect to the potential collaboration had not been executed by the parties on or before June 30, 2021, the Exclusivity Option would have terminated, and the Note would have been repayable by the Company upon maturity.

On March 19, 2021, the Company entered into the Collaboration Agreement with Relief providing for the development and commercialization of ACER-001 for the treatment of various inborn errors of metabolism, including for the treatment of UCDs and MSUD. The Company received a $10.0 million cash payment from Relief (consisting of a $14.0 million “Reimbursement Payment” from Relief to the Company offset by payment of the $4.0 million outstanding balance of the Note plus interest earned through the date of the Collaboration Agreement) and Relief released its security interest in all of the Company’s assets pursuant to the Promissory Note. Under the terms of the Collaboration Agreement, Relief committed to pay the Company up to an additional $20.0 million for U.S. development and commercial launch costs for the UCDs and MSUD indications (the “Development Payments”). During the three months ended June 30, 2021, the Company received from Relief the $10.0 million First Development Payment. The Company was contractually entitled to receive from Relief an additional $10.0 million Second Development Payment conditioned upon FDA’s acceptance of a New Drug Application (“NDA”) for ACER-001 in a UCD for filing and review. This acceptance was received on October 4, 2021. On October 6, 2021, the Company entered into a Waiver and Agreement with Relief to amend the timing for the Second Development Payment. The Company received the Second Development Payment in two $5.0 million tranches on each of October 12, 2021 and January 14, 2022. Further, the Company retained development and commercialization rights in the U.S., Canada, Brazil, Turkey, and Japan (“Acer Territory”). The companies will split net profits from the Acer Territory 60%:40% in favor of Relief. Relief licensed the rights for the rest of the world (“Relief Territory”), where the Company will receive from Relief a 15% royalty on all net sales received in the Relief Territory. The Company could also receive a total of $6.0 million in milestone payments based on the first European marketing approvals of ACER-001 for a UCD and MSUD. There is no guarantee that ACER-001 will receive regulatory authority approval in any territory or become commercially available for the indications under investigation. The terms of the Collaboration Agreement and Option Agreement are further described below in the Revenue Recognition and Accounting for Collaboration Agreements section of Note 2, Significant Accounting Policies. 

On March 4, 2022, the Company entered into a Credit Agreement (the “SWK Credit Agreement”) with the lenders party thereto and SWK Funding LLC (“SWK”), as the agent, sole lead arranger and sole bookrunner, which provided for a senior secured term loan facility in an aggregate amount of $6.5 million in a single borrowing (the “Bridge Loan”). The Bridge Loan funding closed on March 14, 2022. The proceeds of the Bridge Loan were used to pay fees, costs and expenses related to the SWK Credit Agreement, the Secured Convertible Note Purchase Agreement (as defined and described below) and the Marathon Credit Agreement (as defined and described below) and for other working capital and general corporate purposes.

The Bridge Loan bears interest at an annual rate of the sum of (i) 3-month LIBOR (or such other rate as may be agreed by the Company and SWK following the date on which 3-month LIBOR is no longer available), subject to a 1% floor, plus (ii) a margin of 11%, with such interest payable quarterly in arrears. In the event of default, the interest rate will increase by 3% per annum over the contract rate effective at the time of default but shall not be higher than the maximum rate permitted to be charged by applicable laws. The Company has the option to capitalize such interest commencing on the date on which the Bridge Loan was funded and continuing until November 15, 2022. Commencing on November 15, 2022, the principal amount of the Bridge Loan will amortize at a rate of $0.7 million, payable quarterly. The final maturity date of the Bridge Loan is (a) if full approval by FDA for marketing of ACER-001 (“ACER-001 Approval”) occurs on or before September 30, 2022, then the date which is 12 business days after ACER-001 Approval, or (b) if ACER-001 Approval does not occur on or before September 30, 2022, then March 4, 2024. The Company has the option to prepay the Bridge Loan in whole or in part. Upon the repayment of the Bridge Loan (whether voluntary or at scheduled maturity), the Company must pay an exit fee so that SWK receives an aggregate amount (inclusive of all principal, interest and origination and other fees paid to SWK under the SWK Credit Agreement on or prior to the prepayment date) equal to (a) 1.3 times the outstanding principal amount of the Bridge Loan, plus any and all payment-in-kind interest payments, if ACER-001 Approval or such payment occurs on or prior to September 30, 2022, or (b) 1.5 times the outstanding principal amount of the Bridge Loan, plus any and all payment-in-kind interest amounts, if each of ACER-001 Approval and such payment does not occur until after September 30, 2022. Under the Bridge Loan, the Company was required to maintain a cash and cash equivalents balance of not less than $4.0 million as of 20 days following receipt of FDA’s Complete Response Letter in June 2022 with respect to the Company’s NDA in respect of ACER-001 (sodium phenylbutyrate) for oral suspension for the treatment of patients with UCDs and is then required to maintain a cash and cash equivalents balance of not less than $6.5 million as of 40 days following receipt of that Complete Response Letter for the remainder of the time that the Bridge Loan is outstanding. The minimum cash balance would be reduced to $2.0 million in the event of positive safety and efficacy data for ACER-801 from a Phase 2a trial.

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The Bridge Loan is secured by a first priority lien on all assets of the Company and any of its future subsidiaries pursuant to a Guarantee and Collateral Agreement entered into on March 4, 2022, between the Company and SWK, as agent (the “SWK Security Agreement”). The SWK Credit Agreement contains customary representations and warranties and affirmative and negative covenants. The Company paid to SWK $0.1 million in origination fees on the date on which the Bridge Loan was funded.

In addition, the Company issued a warrant (the “SWK Warrant”) to purchase 150,000 shares of the Company’s common stock at an exercise price of $2.46 per share. SWK may exercise the SWK Warrant in accordance with the terms thereof for all or any part of such shares of common stock from the date on which the Bridge Loan was funded until and including March 4, 2029.

On March 4, 2022, the Company also entered into a Secured Convertible Note Purchase Agreement with MAM Aardvark, LLC (“Marathon”) and Marathon Healthcare Finance Fund, L.P. (“Marathon Fund” and together with “Marathon” each a “Holder” and collectively the “Holders”) (the “Secured Convertible Note Purchase Agreement”) pursuant to which the Company issued and sold to the Holders secured convertible notes (the “Secured Convertible Notes”) in an aggregate amount of up to $6.0 million (the “Convertible Note Financing”). The Convertible Note Financing closed on March 14, 2022. The proceeds of the Convertible Note Financing are being used to pay fees, costs and expenses related to the SWK Credit Agreement, the Secured Convertible Note Purchase Agreement and the Marathon Credit Agreement and for other working capital and general corporate purposes.

The Secured Convertible Notes bear interest at an annual rate of 6.5%, with such interest payable quarterly; provided, however, that until the first to occur of ACER-001 Approval and the repayment in full of the Bridge Loan, interest will not be payable in cash, but will accrue and be payable in cash upon the earlier of a) the repayment of all obligations under the Bridge Loan and termination of such Bridge Loan or b) within three business days of ACER-001 Approval. Subject to the restrictions set forth in an agreement among each of the Holders and SWK, as agent and lender, and any other intercreditor or subordination agreement entered into in connection with the Term Loan (defined below), each of the Holders has the right, during the 30-day periods beginning 12 months, 18 months and 24 months after the closing date of the Convertible Note Financing, to require the Company to redeem the Convertible Secured Note held by such Holder at a redemption price of the outstanding principal amount plus any accrued but unpaid interest. Each of the Holders also has the right to convert all or any portion of the outstanding principal amount plus any accrued but unpaid interest under the Convertible Secured Note held by such Holder into shares of common stock at a conversion price of $2.50 per share, subject to adjustment. Each Holder has certain rights with respect to the registration by the Company for resale of the shares of common stock issuable upon conversion of the Secured Convertible Note held by such Holder which are forth in the Secured Convertible Note Purchase Agreement. Any outstanding principal, together with all accrued and unpaid interest, will be payable on the earlier of the third anniversary of the date of issuance, or upon a change of control of the Company.

Pursuant to the Secured Convertible Note Purchase Agreement, the Secured Convertible Notes are secured by a lien on collateral representing substantially all assets of the Company, although such security interest is subordinated to the Company’s obligations under the SWK Credit Agreement and may also be subordinated to the Company’s obligations under the Marathon Credit Agreement.

On March 4, 2022, the Company also entered into a Credit Agreement (the “Marathon Credit Agreement”) with the lenders party thereto and Marathon, as the agent, sole lead arranger and sole bookrunner, which provides for a senior secured term loan facility in an aggregate amount of up to $42.5 million in a single borrowing (the “Term Loan”). The Term Loan will be available to be borrowed only following ACER-001 Approval and until December 31, 2022 (i.e., if ACER-001 Approval does not occur on or before December 31, 2022, then the Term Loan will not be available unless the Company is able to obtain an extension for the time period beyond December 31, 2022, to the actual PDUFA target action date), and funding of the Term Loan is also subject to the satisfaction of conditions as set forth in the Marathon Credit Agreement. Although the Company’s resubmitted NDA in respect of ACER-001 (sodium phenylbutyrate) for oral suspension for the treatment of patients with UCDs has been accepted for substantive review by FDA, the Prescription Drug User Fee Act (“PDUFA”) target action date is January 15, 2023. The Term Loan, if it becomes available, will be used to refinance certain other indebtedness of the Company (including the Bridge Loan), to pay fees, costs and expenses related to the Marathon Credit Agreement and for other working capital and general corporate purposes. Should the Term Loan become available, the Company will pay Marathon a commitment fee equal to 1.5% of the Term Loan amount. The Marathon Credit Agreement also includes an accordion feature pursuant to which the Company, Marathon and the lenders under the Marathon Credit Agreement may agree to increase the Term Loan commitments by up to an additional $50.0 million dollars for a total commitment of $92.5 million; provided, however, that any such increase is within the sole discretion of each party (i.e., the Company cannot unilaterally trigger such an increase).

The Term Loan would bear interest at an annual rate of 13.5% and would be payable quarterly in arrears. The Company would have the option to capitalize up to 4% of such interest commencing on the date on which the Term Loan is funded (the “Term Loan Funding Date”) and continuing until the third anniversary of the Term Loan Funding Date. Commencing on the third anniversary of the Term Loan Funding Date, the principal outstanding amount of the Term Loan would amortize at a rate of 2.78%, payable monthly. The final maturity date of the Term Loan would be the earlier of six years after the Term Loan Funding Date or December 31, 2028. The Company would have the option to prepay the Term Loan in whole or in part at any time, subject to a prepayment fee equal to (a) if the prepayment is made prior to March 4, 2025, then the greater of 5% or the amount of interest that would have accrued from the

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date of prepayment until March 4, 2025, (b) if the prepayment is made on or after March 4, 2025, but prior to March 4, 2026, then 3%, (c) if the prepayment is made on or after March 4, 2026, but prior to March 4, 2027, then 2%, or (d) if the prepayment is made on or after March 4, 2027, then 1%.

The Term Loan would be secured by a first priority lien on all assets of the Company and any of its future subsidiaries pursuant to a Guarantee and Collateral Agreement to be entered into on the Term Loan Funding Date between the Company and Marathon, as agent (the “Marathon Security Agreement”). The Marathon Credit Agreement contains customary representations and warranties and affirmative and negative covenants. The Company paid $0.2 million in commitment fees to Marathon in connection with obtaining the commitments in respect of the Term Loan and will pay $0.6 million in additional commitment fees to Marathon following ACER-001 Approval or any change of control of the Company or sale or transfer of the ACER-001 product. 

In connection with the Marathon Credit Agreement, on March 4, 2022, the Company, Marathon and the Marathon Fund also entered into a Synthetic Royalty Agreement (the “Royalty Agreement”) pursuant to which, in the event of the funding of the Term Loan, the Company will pay Marathon and the Marathon Fund, on a quarterly basis, 2% of certain aggregate commercial revenue from sales of ACER-001 during that quarter (i.e., 2% of the net sales and of the amount of certain other payments), subject to a cap on the aggregate amount of such payments of $15.0 million. Upon a change of control of the Company or the sale of the ACER-001 business to a third party, the Company would pay Marathon and the Marathon Fund the difference between $15.0 million and the aggregate amount of the payments previously made by the Company to Marathon and the Marathon Fund pursuant to the Royalty Agreement.

The Company’s cash and cash equivalents available at June 30, 2022 are expected to be sufficient to fund its anticipated operating and capital requirements through the third quarter of 2022.

Management expects to continue to finance operations through the issuance of additional equity or debt securities, non-dilutive funding, and/or through strategic collaborations. Any transactions which occur may contain covenants that restrict the ability of management to operate the business and any securities issued may have rights, preferences, or privileges senior to the Company’s common stock and may dilute the ownership of current stockholders of the Company.

Going Concern

The accompanying financial statements have been prepared in conformity with accounting principles generally accepted in the U.S. (“GAAP”), which contemplate continuation of the Company as a going concern. The Company has not established a source of commercial product revenues and, as such, has been dependent on funding operations through the sale of equity securities, through a collaboration agreement, and through debt instruments. Since inception, the Company has experienced significant losses and incurred negative cash flows from operations. The Company has spent, and expects to continue to spend, a substantial amount of funds in connection with implementing its business strategy, including its planned product development efforts and potential precommercial activities.

As of June 30, 2022, the Company had cash and cash equivalents of $14.5 million and current liabilities of $17.5 million, which include $6.3 million associated with deferred collaboration funding (see Revenue Recognition and Accounting for Collaboration Agreements below in Note 2, Significant Accounting Policies). The Company’s cash and cash equivalents available at June 30, 2022 are expected to be sufficient to fund its anticipated operating and capital requirements through the third quarter of 2022.

The Company will need to raise additional capital to fund continued operations beyond the third quarter of 2022 because neither FDA approval of ACER-001 nor subsequent product revenues are assured. The Company may not be successful in its efforts to raise additional funds or achieve profitable operations. The Company continues to explore potential opportunities and alternatives to obtain the additional resources that will be necessary to support its ongoing operations beyond the third quarter of 2022, including raising additional capital through either private or public equity or debt financing or additional program collaborations or non-dilutive funding, as well as using its ATM facility which has $36.7 million available as of June 30, 2022 and/or its remaining $11.8 million available under the equity line facility entered into on April 30, 2020 with Lincoln Park. (See At-the-Market Facility and Common Stock Purchase Agreement below in Note 9.) Due to the SEC’s “baby shelf rules,” which prohibit companies with a public float of less than $75 million from issuing securities under a shelf registration statement in excess of one-third of such company’s public float in a 12-month period, the Company is currently only able to issue a limited number of shares under its ATM facility which aggregate to no more than one-third of its public float. Additionally, there can be no assurance that the Company will be able to receive the entire obligation amount from Lincoln Park because the purchase agreement contains limitations, restrictions, requirements, events of default, and other provisions that could limit the Company’s ability to cause Lincoln Park to buy common stock from the Company. As noted above, the Company also has available to it the $42.5 million Term Loan conditional upon the approval of ACER-001 by FDA; provided, however, that if ACER-001 Approval does not occur on or before December 31, 2022, then the Term Loan will not be available unless the Company is able to obtain an extension for the time period beyond December 31, 2022, to the actual PDUFA target action date. The PDUFA target action date for the Company’s resubmitted NDA in respect of ACER-001 (sodium phenylbutyrate) for oral suspension for the treatments of patients with UCDs is January 15, 2023. The Company has no commitments for any additional financing, except for the agreement with Lincoln Park, and the Marathon Credit Agreement for the Term Loan. Any

10

amounts raised will be used for further development of its product candidates, precommercial activities, and for other working capital purposes.

If the Company is unable to obtain additional funding to support its current or proposed activities and operations, it may not be able to continue its operations as currently anticipated, which may require it to suspend or terminate any ongoing development activities, modify its business plan, curtail various aspects of its operations, cease operations, or seek relief under applicable bankruptcy laws. In such event, the Company’s stockholders may lose a substantial portion or even all of their investment.

These factors individually and collectively raise substantial doubt about the Company’s ability to continue as a going concern for at least 12 months from the date these financial statements are available, or August 15, 2023. The accompanying unaudited condensed financial statements do not include any adjustments or classifications that may result from the possible inability of the Company to continue as a going concern.

Basis of Presentation

The accompanying condensed financial statements are unaudited and have been prepared in accordance with GAAP for interim financial information and with the instructions to Form 10-Q and Regulation S-X. The unaudited condensed financial statements have been prepared on the same basis as the audited annual financial statements and reflect, in the opinion of management, all adjustments of a normal and recurring nature that are necessary for the fair presentation of the Company’s financial position, results of operations, stockholders’ (deficit) equity and cash flows for the periods presented. The results of operations for the three and six months ended June 30, 2022 are not necessarily indicative of the results to be expected for the year ending December 31, 2022 or for any other future annual or interim period. The condensed balance sheet as of December 31, 2021, included herein, was derived from the audited financial statements as of that date but does not include all disclosures required by GAAP. These unaudited financial statements should be read in conjunction with the Company’s audited financial statements included in its Annual Report on Form 10-K for the year ended December 31, 2021.

Any reference in these notes to applicable guidance is meant to refer to the authoritative GAAP as found in the Accounting Standards Codification (“ASC”) and Accounting Standards Update (“ASU”) of the Financial Accounting Standards Board (“FASB”).

Restatement of Previously Issued Financial Statements

The Company has restated its previously reported unaudited condensed interim financial statements for the three and six months ended June 30, 2022. The restatement reflects the addition of “if converted” treatment of the Secured Convertible Notes in the Company’s calculation of its diluted EPS as well as related information in the Notes to Unaudited Condensed Interim Financial Statements. The following table presents the effects of the error correction on the Company’s Unaudited Condensed Interim Statement of Operations for the three and six months ended June 30, 2022, by showing basic net loss per share as previously reported, and additional disclosure of diluted loss per share and diluted weighted average common shares outstanding applying the “if converted” method to the Secured Convertible Notes as described above.

	Three Months Ended June 30,						Six Months Ended June 30,
	2022			2021			2022			2021
Net loss per share – basic (as restated)	$	(0.17	)	$	(0.21	)	$	(0.80	)	$	(0.54	)
Weighted average common shares outstanding – basic (as restated)		15,273,707			14,310,244			14,794,637			14,225,551
Net loss per share – diluted (as restated) (1)	$	(0.30	)	$	(0.21	)	$	(0.83	)	$	(0.54	)
Weighted average common shares outstanding – diluted (as restated)		17,681,400			14,310,244			16,372,537			14,225,551

(1) In calculating diluted net loss per share, we excluded the impact of changes in the fair value of the Secured Convertible Notes of $2.6 million and $1.7 million, for the three and six months ended June 30, 2022, respectively. Included in the denominator using the “if-converted” method during the three and six months ended June 30, 2022, are the 2,407,693 shares and 1,577,900 shares, respectively, associated with the original principal amount of the Secured Convertible Notes and the assumed conversion of accrued interest owed at the beginning of the period.

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Refer to Note 10, “Net Loss Per Share,” and Note 2 “Significant Accounting Policies, Basic and Diluted Net Loss per Common Share” to these unaudited condensed financial statements included in this form 10-Q/A for more information regarding the impact of correcting the error on the Company’s consolidated financial statements.

2. SIGNIFICANT ACCOUNTING POLICIES (AS RESTATED)

The Company’s significant accounting policies are described in Note 2, “Significant Accounting Policies,” in its Annual Report on Form 10-K for the year ended December 31, 2021.

Use of Estimates

The Company’s accounting principles require management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of assets and liabilities at the date of the condensed financial statements and reported amounts of revenues and expenses during the reporting period. From time to time, estimates having relatively higher significance include determination of stand-alone selling price and variable consideration estimates for purposes of revenue recognition, deferred collaboration funding, stock-based compensation, inputs to fair value for debt, contract manufacturing and clinical trial accruals, and income taxes. Actual results could differ from those estimates and changes in estimates may occur.

Revenue Recognition and Accounting for Collaboration Agreements

The Company’s revenues are generated from a single collaboration agreement which included the sale of a license of intellectual property. The Company analyzes its collaboration agreements to assess whether they are within the scope of ASC Topic 808, Collaborative Arrangements, (“ASC 808”) to determine whether such arrangements involve joint operating activities performed by parties that are both active participants in the activities and exposed to significant risks and rewards that are dependent on the commercial success of such activities. To the extent the arrangement is within the scope of ASC 808, the Company assesses whether aspects of the arrangement between the Company and the collaboration partner are within the scope of other accounting literature. If the Company concludes that some or all aspects of the arrangement represent a transaction with a customer, the Company accounts for those aspects of the arrangement within the scope of ASC Topic 606, Revenue from Contracts with Customers (“ASC 606”). If the Company concludes that some or all aspects of the arrangement are within the scope of ASC 808 and do not represent a transaction with a customer, the Company recognizes the Company’s share of the allocation of the shared costs incurred with respect to the jointly conducted activities as a component of the related expense in the period incurred. Pursuant to ASC 606, a customer is a party that has contracted with an entity to obtain goods or services that are an output of the entity’s ordinary activities in exchange for consideration. Under ASC 606, an entity 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. If the Company concludes a counter-party to a transaction is not a customer or otherwise not within the scope of ASC 606 or ASC 808, the Company considers the guidance in other accounting literature as applicable or by analogy to account for such transaction.

The Company determines the units of account within the collaborative arrangement utilizing the guidance in ASC 606 to determine which promised goods or services are distinct. In order for a promised good or service to be considered “distinct” under ASC 606, 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 (i.e., the good or service is capable of being distinct), and the entity’s promise to transfer the good or service to the customer is separately identifiable from other promises in the contract (i.e., the promise to transfer the good or service is distinct within the context of the contract).

For any units of account that fall within the scope of ASC 606, where the other party is a customer, the Company evaluates the separate performance obligation(s) under each contract, determines the transaction price, allocates the transaction price to each performance obligation considering the estimated stand-alone selling prices of the services and recognizes revenue upon the satisfaction of such obligations at a point in time or over time dependent on the satisfaction of one of the following criteria: (1) the customer simultaneously receives and consumes the economic benefits provided by the vendor’s performance; (2) the vendor creates or enhances an asset controlled by the customer; and (3) the vendor’s performance does not create an asset for which the vendor has an alternative use and the vendor has an enforceable right to payment for performance completed to date.

Variable consideration is included in the transaction price only to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved.

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Revenue for a sales-based or usage-based royalty promised in exchange for a license of intellectual property is recognized only when (or as) the later of the following events occurs: (i) the subsequent sale or usage occurs; or (ii) the performance obligation to which some or all of the sales-based or usage-based royalty has been allocated has been satisfied (or partially satisfied).

On January 25, 2021, the Company entered into the Option Agreement with Relief pursuant to which the Company granted Relief the Exclusivity Option to pursue a potential collaboration and license arrangement with the Company for the development, regulatory approval and commercialization of ACER-001 for the treatment of various inborn errors of metabolism, including UCDs and MSUD. The Option Agreement provided a period of time up to June 30, 2021 for the parties to perform additional due diligence and to work toward negotiation and execution of a definitive agreement with respect to the potential collaboration for ACER‑001. In consideration for the grant of the Exclusivity Option, (i) the Company received from Relief an upfront nonrefundable payment of $1.0 million, (ii) Relief provided to the Company a 12-month secured loan in the principal amount of $4.0 million, as evidenced by the Note issued by the Company to Relief, and (iii) the Company granted to Relief a security interest in all of its assets to secure performance of the Note, as evidenced by the Security Agreement. The Note was repayable in one lump sum within 12 months from issuance and bore interest at a rate equal to 6% per annum. If a definitive agreement with respect to the potential collaboration had not been executed by the parties on or before June 30, 2021, the Exclusivity Option would have terminated and the Note would have been repayable by the Company upon maturity.

On March 19, 2021, the Company entered into the Collaboration Agreement with Relief providing for the development and commercialization of ACER-001 for the treatment of various inborn errors of metabolism, including for the treatment of UCDs and MSUD. The Company received a $10.0 million cash payment from Relief (consisting of a $14.0 million “Reimbursement Payment” from Relief to the Company offset by repayment of the $4.0 million outstanding balance of the Note, plus interest earned through the date of the Collaboration Agreement), and Relief released its security interest in all of the Company’s assets pursuant to the Promissory Note. Under the terms of the Collaboration Agreement, Relief committed to pay the Company up to an additional $20.0 million for U.S. development and commercial launch costs for the UCDs and MSUD indications. During the three months ended June 30, 2021, the Company received from Relief the $10.0 million First Development Payment. The Company was contractually entitled to receive from Relief an additional $10.0 million Second Development Payment conditioned upon FDA’s acceptance of an NDA for ACER-001 in a UCD for filing and review. This acceptance was received on October 4, 2021. On October 6, 2021, the Company entered into a Waiver and Agreement with Relief to amend the timing for the Second Development Payment. The Company received the Second Development Payment in two $5.0 million tranches on each of October 12, 2021 and January 14, 2022. Further, the Company retained development and commercialization rights in the U.S., Canada, Brazil, Turkey and Japan (“Acer Territory”). The companies will split net profits from the Acer Territory 60%:40% in favor of Relief. Relief licensed the rights for the rest of the world (“Relief Territory”), where the Company will receive from Relief a 15% royalty on all net sales received in the Relief Territory. The Company could also receive a total of $6.0 million in milestone payments based on the first European (EU) marketing approvals for a UCD and MSUD. There is no guarantee that ACER-001 will receive regulatory authority approval in any territory or become commercially available for the indications under investigation.

The Company assessed these agreements in accordance with the authoritative literature and concluded that they meet the definition of a collaborative arrangement per ASC 808. For certain parts of the Collaboration Agreement, the Company concluded that Relief represented a customer while, for other parts of the Collaboration Agreement, Relief did not represent a customer. The units of account of the Collaboration Agreement where Relief does not represent a customer are outside of the scope of ASC 606. The Company also determined that the development and commercialization services and Relief’s right to 60% profit in the Acer Territory is within the scope of ASC 730, with regard to funded research and development arrangements.

The Company concluded the promised goods and services contained in the Collaboration Agreement, represented two distinct units of account consisting of a license in the Relief Territory, and a combined promise for the development and commercialization of ACER-001 in the Acer Territory and the payment of 60% net profit from that territory (together, the “Services”). The stand-alone selling price was estimated for each distinct unit of account utilizing an estimate of discounted cashflows associated with each.

The Company determined that the transaction price at the outset of the Collaboration Agreement was $25.0 million, including the Option Fee of $1.0 million, the Reimbursement Payment of $14.0 million, and the First Development Payment of $10.0 million. The Company concluded that consistent with the evaluation of variable consideration, using the most likely amount approach, the Second Development Payment as well as the milestone payments for EU marketing approvals, should be fully constrained until the contingency associated with each payment has been resolved and the Company’s NDA is accepted for review by FDA, and Relief receives EU marketing approval, respectively.

Since ASC 808 does not provide recognition and measurement guidance for collaborative arrangements, the Company applied the principles of ASC 606 for those units of account where Relief is a customer and ASC 730-20 for the funded research and development activities. The license revenue was recognized at the point where the Company determined control was transferred to the customer. The combined unit of account for the Services associated with the allocation of the initial transaction price will be recognized over the service period through the anticipated date of first commercial sale of the ACER-001 approved product in the U.S. The Company also determined that the Services associated with the allocation of the initial transaction price would be satisfied

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over time as measured using actual costs as incurred by the Company toward the identified development and commercialization services agreed to between the parties up to the point of first commercial sale of the ACER-001 product. Research and development expenses and general and administrative expenses, as they relate to activities governed by the Collaboration Agreement, incurred in satisfying the Services unit-of-account will be recognized as contra-expense within their respective categories, consistent with the presentation guidance in ASC Topic 730, Research and Development (“ASC 730”).

The Company recognizes a receivable under the Collaboration Agreement when the consideration to be received is deemed unconditional, or when only the passage of time is required before payment of that consideration is due. Amounts receivable under the Collaboration Agreement plus payments received from Relief, net of the amounts recorded as license revenue and as offsets to research and development expenses and to general and administrative expenses, are reported as deferred collaboration funding.

At June 30, 2022, the amount of deferred collaboration funding associated with unsatisfied promises under the Collaboration Agreement amounted to $14.2 million. The Company has recorded $6.3 million as a current liability, which equates to the Company’s estimate of remaining spending under the Collaboration Agreement and which the Company estimates will be recognized within the next 12 months up to the point of the first commercial sale of ACER-001. The remaining balance of $7.9 million is recorded as a non-current liability and represents the estimated amount that would be taken against future net profit payments made to Relief should they occur. The Company expects to recognize this deferred collaboration funding as it incurs expenses associated with performing the Services up to the date of first commercial sale in the Acer Territory and through the end of the effective date of the Collaboration Agreement. At June 30, 2022, deferred collaboration funding was composed of $35.0 million received from Relief, offset by $1.3 million recognized as license revenue during the year ended December 31, 2021 and $10.7 million recorded as an offset to research and development expenses and $8.8 million recorded as an offset to general and administrative expenses subsequent to signing the Collaboration Agreement and through the date of this report.

Cash and Cash Equivalents

The Company considers all highly liquid investments with maturities of three months or less at the date of purchase to be cash equivalents. Financial instruments that potentially subject the Company to concentration of credit risk consist principally of cash deposits. Accounts at each institution are insured by the Federal Deposit Insurance Corporation (“FDIC”) up to $250,000. At June 30, 2022 and December 31, 2021, the Company had $14.2 million and $12.5 million, respectively, in excess of the FDIC insured limit.

Under the Bridge Loan, the Company was required to maintain a cash and cash equivalents balance of not less than $4.0 million as of 20 days following receipt of FDA’s Complete Response Letter in June 2022 with respect to the Company’s NDA in respect of ACER-001 (sodium phenylbutyrate) for oral suspension for the treatment of patients with UCDs and is then required to maintain a cash and cash equivalents balance of not less than $6.5 million as of 40 days following receipt of that Complete Response Letter for the remainder of the time that the Bridge Loan is outstanding. The minimum cash balance would be reduced to $2.0 million in the event of positive safety and efficacy data for ACER-801 from a Phase 2a trial.

The Company recognized a $4.0 million non-cash reduction in a secured loan from Relief during the six months ended June 30, 2021, since the Reimbursement Payment from Relief was received net of the amount of principal and interest due in connection with the secured loan.

Fair Value of Financial Instruments

ASC Topic 820, Fair Value Measurement (“ASC 820”), establishes a fair value hierarchy for instruments measured at fair value that distinguishes between assumptions based on market data (observable inputs) and the Company’s own assumptions (unobservable inputs). 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 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.

ASC 820 identifies fair value as the exchange price, or exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As a basis for considering market participant assumptions in fair value measurements, ASC 820 establishes a three-tier fair value hierarchy that distinguishes among the following:

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

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

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•            Level 3—Valuations based on inputs that are unobservable and significant to the overall fair value measurement.

To the extent that the 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.

Financial instruments consist of cash equivalents, collaboration receivable, accounts payable, accrued expenses, and debt instruments. These financial instruments are stated at their respective historical carrying amounts, which approximate fair value due to their short-term nature, except for cash equivalents and debt instruments, which were marked to market at the end of each reporting period. See Note 7 for additional information on the fair value of the debt liabilities.

The Company elected the fair value option for both its Bridge Loan and its Secured Convertible Notes dated March 14, 2022 (see Note 7). The Company adjusts both the Bridge Loan and the Secured Convertible Notes to fair value through the change in fair value of debt in the accompanying unaudited condensed statements of operations. Subsequent unrealized gains and losses on items for which the fair value option is elected are reported in the accompanying unaudited condensed statement of operations.

Debt

Convertible notes are regarded as compound instruments, consisting of a liability component and an equity component. The Company determined that it is eligible for the fair value option election in connection with the Bridge Loan and the Secured Convertible Notes. Each instrument met the definition of a “recognized financial liability” which is an acceptable financial instrument eligible for the fair value option under ASC 825-10-15-4 and do not meet the definition of any of the financial instruments found within ASC 825-10-15-5 that are not eligible for the fair value option. At the date of issuance, the fair value for each instrument is derived from the instrument’s implied discount rate at inception.

Research and Development Expenses

Research and development costs are expensed as incurred and include compensation and related benefits, license fees and third-party contracted research and manufacturing consultants. The Company sometimes makes nonrefundable advance payments for goods and services that will be used in future research and development activities. These payments are capitalized and recorded as an expense in the period that the goods are received or that the services are performed. From time to time, in connection with the Collaboration Agreement with Relief, the Company may recognize “contra-expense” for the research and development activities which were funded by the Collaboration Agreement. These contra-expense amounts are disclosed parenthetically on the face of the financial statements.

General and Administrative Expenses

General and administrative expenses consist primarily of employee-related expenses, including salaries, benefits, and stock-based compensation; precommercial costs; and professional fees for legal, business consulting, auditing, and tax services. The Company expects that general and administrative expenses will be substantial in the future. From time to time, in connection with the Collaboration Agreement with Relief, the Company may recognize “contra-expense” for the general and administrative activities which were funded by the Collaboration Agreement. These contra-expense amounts are disclosed parenthetically on the face of the financial statements.

Clinical Trial and Preclinical Study Expenses

The Company makes estimates of prepaid and/or accrued expenses as of each balance sheet date in its financial statements based on certain facts and circumstances at that time. The Company’s accrued expenses for preclinical studies and clinical trials are based on estimates of costs incurred for services provided by contract research organizations (“CROs”), manufacturing organizations, and for other trial- and study-related activities. Payments under the Company’s agreements with external service providers depend on a number of factors such as site initiation, patient screening, enrollment, delivery of reports, and other events. In accruing for these activities, the Company obtains information from various sources and estimates the level of effort or expense allocated to each period. Adjustments to research and development expenses may be necessary in future periods as the Company’s estimates change. As these activities are generally material to the Company’s financial statements, subsequent changes in estimates may result in a material change in the Company’s accruals. No material changes in estimates were recognized in either of the three or six months ended June 30, 2022 or 2021. Accounts payable and accrued expenses include costs associated with preclinical or clinical studies of $0.3 million and $0.2 million at June 30, 2022 and December 31, 2021, respectively.

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Stock-Based Compensation

The Company records stock-based payments at fair value. The measurement date for compensation expense related to awards is generally the date of the grant. The fair value of awards is recognized as an expense in the condensed statements of operations over the requisite service period, which is generally the vesting period. The fair value of options is calculated using the Black-Scholes option pricing model. A limited number of option grants are periodically made to non-employee contractors, and the Company utilizes the simplified method to value these awards. This option valuation model requires the use of assumptions including, among others, the volatility of stock price, the expected term of the option, and the risk-free interest rate.

The following assumptions were used to estimate the fair value of stock options granted during the six months ended June 30, 2022 and 2021 using the Black-Scholes option pricing model:

	2022	2021
Risk-free interest rate	1.18%-1.83%	0.37%- 0.62%
Expected life (years)	6.25	6.25
Expected volatility	113.0% - 115.0%	92.4%
Dividend rate	0%	0%

Due to its limited operating history and a limited trading history of its common stock in relation to the life of its standard option grants, the Company estimates the volatility of its stock in consideration of a number of factors including the Company’s available stock price history and the stock price volatility of comparable public companies. The expected term of a stock option granted to employees and directors (including non-employee directors) is based on the average of the contractual term (generally ten years) and the vesting period. For other non-employee options, the expected term is the contractual term. The assumed dividend yield is based upon the Company’s expectation of not paying dividends in the foreseeable future.  The Company recognizes forfeitures related to employee stock-based awards as they occur. The risk-free rate for periods within the expected life of the option is based upon the U.S. Treasury yield curve in effect at the time of grant. Option awards are granted at an exercise price equal to the closing market price of the Company’s common stock on the Nasdaq Capital Market on the date of grant.

Goodwill

Goodwill represents the excess of the purchase price (consideration paid plus net liabilities assumed) of an acquired business over the fair value of the underlying net tangible and intangible assets. The Company’s goodwill is allocated to the Company’s single reporting unit. The Company evaluates the recoverability of goodwill according to ASC Topic 350, Intangibles – Goodwill and Other annually, or more frequently if events or changes in circumstances indicate that the carrying value of goodwill might be impaired. The Company may opt to perform a qualitative assessment or a quantitative impairment test to determine whether goodwill is impaired. If the Company were to determine based on a qualitative assessment that it was more likely than not that the fair value of the reporting unit was less than its carrying value, a quantitative impairment test would then be performed. The quantitative impairment test compares the fair value of the reporting unit with its carrying amount, including goodwill. If the estimated fair value of the reporting unit is less than its carrying amount, a goodwill impairment would be recognized for the difference. The Company performed a qualitative analysis of goodwill as of June 21, 2022 as it considered the Complete Response Letter received from FDA in June 2022 with respect to the Company’s NDA in respect of ACER-001 (sodium phenylbutyrate) for oral suspension for the treatment of patients with UCDs to be a triggering event requiring it to perform that analysis. Management concluded that it was more likely than not that the fair value of the reporting unit was greater than its carrying amount at June 30, 2022.

Foreign Currency Transaction Gain/(Loss)

Gains and losses arising from transactions and revaluation of balances denominated in currencies other than U.S. dollars are recorded in foreign currency transaction gain/(loss) on the statements of operations.

Income Taxes

The Company is primarily subject to U.S. federal and Massachusetts state income taxes. The Company’s tax returns for years 2015 through present are open to tax examinations by U.S. federal and state tax authorities; however, carryforward attributes that were generated prior to January 1, 2015 remain subject to adjustment upon examination if they either have been utilized or will be utilized in a future period. For federal and state income taxes, deferred tax assets and liabilities are recognized based upon temporary differences between the financial statement and the tax basis of assets and liabilities. Deferred income taxes are based upon prescribed rates and enacted laws applicable to periods in which differences are expected to reverse. The Company recorded no income tax expense or benefit during the three or six months ended June 30, 2022 and 2021, due to a full valuation allowance recognized against

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its net deferred tax assets. A valuation allowance is recorded when it is more likely than not that some portion or all of the deferred tax assets will not be realized. Accordingly, the Company provides a valuation allowance, if necessary, to reduce deferred tax assets to amounts that are realizable. Utilization of net operating losses may be subject to substantial annual limitations due to the “change in ownership” provisions of the Internal Revenue Code of 1986, and similar state provisions. The annual limitations may result in the expiration of net operating losses before utilization.

The tax positions taken or expected to be taken in the course of preparing the Company’s tax returns are required to be evaluated to determine whether the tax positions are “more-likely-than-not” of being sustained by the applicable tax authority. Tax positions not deemed to meet a more-likely-than-not threshold would be recorded as a tax expense in the current year. There were no uncertain tax positions that require accrual or disclosure in the financial statements as of June 30, 2022 and 2021. The Company’s policy is to recognize interest and penalties related to income tax, if any, in income tax expense. As of June 30, 2022 and 2021, the Company had no accruals for interest or penalties related to income tax matters.

The Coronavirus Aid, Relief and Economic Security Act (the “CARES Act”) was enacted in the U.S. on March 27, 2020. The CARES Act, among other things, includes provisions relating to refundable payroll tax credits, deferment of employer side social security payments, net operating loss carryback periods, alternative minimum tax credit refunds, modifications to the net interest deduction limitations, increased limitations on qualified charitable contributions, and technical corrections to tax depreciation methods for qualified improvement property. The Company is required to recognize the effects of tax law changes in the period of enactment. The enactment of the CARES Act did not result in material adjustments for the income tax provision for the three or six months ended June 30, 2022 or to the Company’s assessment of the realizability of deferred tax assets as the carry back of net operating losses was used as a source of income. There were no other effects to the Company’s tax provision as a result of the CARES Act as of June 30, 2022.

Basic and Diluted Net Loss per Common Share (As Restated)

Basic and diluted net loss per common share is computed using the weighted average number of common shares outstanding during the period. Diluted net loss per share is computed using the sum of the weighted average number of common shares outstanding during the period and, in those instances where it would be dilutive, the weighted average number of potential shares of common stock, including the assumed exercise of stock options and warrants, the impact of unvested restricted stock, and the potential shares assuming conversion of convertible debt. Basic and diluted shares outstanding are the same for each period presented when all common stock equivalents, including potential shares from convertible debt and warrants, would be antidilutive due to the net losses incurred, except in certain instances as noted below.

The two-class method is an earnings allocation formula that treats a participating security such as a warrant as having rights to earnings that otherwise would have been available to common stockholders. However, the two-class method does not impact the net loss per share of common stock as the Company has been in a net loss position and while our warrants are considered a participating security, the terms of the warrant agreement does not obligate them to participate in losses. Diluted net income per share is computed using the more dilutive of (a) the two-class method or (b) the if-converted method or treasury stock method, as applicable, to the potentially dilutive instruments. A contract that may be settled in shares and is reported as an asset or liability for accounting purposes may require an adjustment to the numerator for any changes in income or loss that would result if the contract had been reported as an equity instrument for accounting purposes during the period, and doing so is dilutive to the net loss per share calculation (including as a result of the inclusion of underlying shares in the net loss per share calculation).

Recently Adopted Accounting Pronouncements

In August 2020, the FASB issued ASU No. 2020-06, Debt – Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging – Contracts in Entity’s Own Equity (Subtopic 815-40), which simplifies the accounting for convertible instruments by removing, in certain cases, the need for models that required separate accounting for embedded conversion features and also amends the guidance for the derivatives scope exceptions for contracts in an entity’s own equity. This ASU also requires expanded disclosures, including additional information related to the terms and features of convertible instruments and information about events or conditions that cause conversion contingencies to be met or conversion terms to be significantly changed. The Company early adopted ASU No. 2020-06 in the first quarter of 2021. See Note 6 regarding the Secured Convertible Notes which were recognized in the first quarter of 2022 consistent with the adoption of this guidance.

In May 2021, the FASB issued ASU No. 2021-04, Earnings Per Share (Topic 260), Debt—Modifications and Extinguishments (Subtopic 470-50), Compensation—Stock Compensation (Topic 718), and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40): Issuer’s Accounting for Certain Modifications or Exchanges of Freestanding Equity-Classified Written Call Options (a consensus of the FASB Emerging Issues Task Force), which clarifies and reduces diversity in issuers’ accounting for modifications or exchanges of freestanding equity-classified written call options that remain

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equity classified after modification or exchange. The Company adopted ASU No. 2021-04 in the first quarter of 2022. There was no impact on the Company’s financial statements or disclosures as a result of the adoption of this guidance.

In November 2021, the FASB issued ASU No. 2021-10, Government Assistance (Topic 832): Disclosures by Business Entities about Government Assistance, which requires annual disclosures regarding transactions with a government that are accounted for by applying a grant or contribution accounting model. The Company adopted ASU No. 2021-10 in the fourth quarter of 2021. There was no impact on the Company’s financial statements or disclosures as a result of the adoption of this guidance.

3. PROPERTY AND EQUIPMENT

Property and equipment consisted of the following at June 30, 2022 and December 31, 2021:

	June 30, 2022			December 31, 2021
Computer hardware and software	$	144,782		$	113,847
Leasehold improvements		52,887			60,535
Furniture and fixtures		106,698			145,487
Subtotal property and equipment, gross		304,367			319,869
Less accumulated depreciation		(202,785	)		(205,757	)
Property and equipment, net	$	101,582		$	114,112

4. ACCRUED EXPENSES

Accrued expenses consisted of the following at June 30, 2022 and December 31, 2021:

	June 30, 2022		December 31, 2021
Accrued payroll and payroll taxes	$	2,539,643	$	419,354
Accrued precommercial costs		1,120,435		395,923
Accrued contract manufacturing		935,710		827,390
Accrued accounting, audit, and tax fees		278,950		167,630
Accrued contract research and regulatory consulting		236,356		47,637
Accrued legal		212,291		162,812
Accrued consulting		103,855		105,085
Accrued license fees		78,015		86,259
Accrued miscellaneous expenses		62,709		216,103
Total accrued expenses	$	5,567,964	$	2,428,193

5. LEASES

On March 6, 2018, the Company entered into a lease agreement (the “Newton Lease”), commencing on October 1, 2018, for certain premises which consist of 2,760 square feet of office space located in Newton, Massachusetts. On March 5, 2019, the Company entered into a modified lease agreement (the “Additional Newton Lease”) to lease an additional 1,600 square feet of office space, commencing on June 1, 2019, located in Newton, Massachusetts. The Newton Lease expires on May 31, 2022. On October 15, 2021, the Company entered into a lease amendment extending the Additional Newton Lease through December 31, 2022. Effective with the expiration of the Newton Lease and the extension of the Newton Additional Lease, the space leased by the Company in Newton was reduced to 1,600 square feet as of June 1, 2022. The Company is required to share in certain taxes and operating expenses associated with the Newton Lease and the Additional Newton Lease.

The Company entered into a triple net lease (the “Bend Lease”) effective April 1, 2018 for certain premises consisting of 2,288 square feet of office space located in Bend, Oregon. On April 23, 2019, the Company entered into a modified lease agreement (the “Additional Bend Lease”) to lease an additional 1,389 square feet of office space, commencing on May 1, 2019, located in Bend, Oregon. On November 17, 2021, the Company entered into a lease agreement to extend the term of the Bend Lease and the Additional Bend Lease to June 30, 2022 and to further extend the term either (1) until June 30, 2027 if FDA approval of ACER-001 was received in June 2022, or (2) until June 30, 2025 if FDA approval of ACER-001 was not received in June 2022. As FDA approval of ACER-001 was not received in June 2022, the Company entered into a lease amendment in June 2022 such that the renewal term for this office space was extended until June 30, 2025.

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The leases for the Newton and Bend office space are classified as operating leases. The leases contain immaterial provisions for rent holidays and rent escalations over the term of the leases, which have been included in the Company’s right of use asset and lease liabilities. In the year ended December 31, 2021, the Company recorded a non-cash transaction to recognize an additional $0.4 million right of use asset and lease liability in conjunction with the modifications to the leases. The Company’s lease liability as of June 30, 2022 and December 31, 2021 represents the net present value of future lease payments utilizing discount rates of 8% to 10%, which correspond to the Company’s incremental borrowing rates as of the effective dates of the leases. As of June 30, 2022, the weighted average remaining lease term was 2.7 years. The Company recorded expense of $0.1 million related to the leases for each of the three and six months ended June 30, 2022 and 2021. The Company made cash payments for amounts included in the measurement of lease liabilities of $0.1 million, during each of the three and six months ended June 30, 2022 and 2021. The Company reported a right-of-use asset of $0.3 million in Other non-current assets and lease liabilities totaling $0.3 million in Other current liabilities and Other non-current liabilities as of June 30, 2022.

The following table reconciles the undiscounted lease liabilities to the total lease liabilities recognized on the unaudited condensed balance sheet as of June 30, 2022:

Undiscounted lease liabilities for years ending December 31:
2022 (remaining)	$	60,317
2023		103,925
2024		107,290
2025		54,579
Total undiscounted lease liabilities		326,111
Less effects of discounting		(49,556	)
Total lease liabilities as of June 30, 2022	$	276,555

The Company’s lease liabilities are reported on the unaudited condensed balance sheets as follows:

	June 30, 2022		December 31, 2021
Other current liabilities	$	110,421	$	184,340
Other non-current liabilities		166,134		209,497
Total lease liabilities	$	276,555	$	393,837

6. DEBT

SWK Credit Agreement

On March 4, 2022, the Company entered into the SWK Credit Agreement with the lenders party thereto and SWK, as the agent, sole lead arranger and sole bookrunner, which provides for a senior secured term loan facility in an aggregate amount of $6.5 million in a single borrowing (the “Bridge Loan”). The Bridge Loan closed on March 14, 2022, after consummation of the Convertible Note Financing (as defined and described below) as well as the satisfaction of other closing conditions as set forth in the SWK Credit Agreement. The proceeds of the Bridge Loan are being used to pay fees, costs and expenses related to the SWK Credit Agreement, the Secured Convertible Note Purchase Agreement (as defined and described below) and the Marathon Credit Agreement (as defined and described below) and for other working capital and general corporate purposes.

The Bridge Loan bears interest at an annual rate of the sum of (i) 3-month LIBOR (or such other rate as may be agreed by the Company and SWK following the date on which 3-month LIBOR is no longer available), subject to a 1% floor, plus (ii) a margin of 11%, with such interest payable quarterly in arrears. In the event of default, the interest rate will increase by 3% per annum over the contract rate effective at the time of default but shall not be higher than the maximum rate permitted to be charged by applicable laws. For the period ended June 30, 2022, the current interest rate applicable to the Bridge Loan is 12%. The Company has the option to capitalize such interest commencing on the date on which the Bridge Loan was funded and continuing until November 15, 2022. Commencing on November 15, 2022, the principal amount of the Bridge Loan will amortize at a rate of $0.7 million payable quarterly. The final maturity date of the Bridge Loan is (a) if full approval by FDA for marketing of the Company’s product known as ACER-001 (sodium phenylbutyrate) (“ACER-001 Approval”) occurs on or before September 30, 2022, then the date which is 12 business days after ACER-001 Approval, or (b) if ACER-001 Approval does not occur on or before September 30, 2022, then March 4, 2024. The Company has the option to prepay the Bridge Loan in whole or in part. Upon the repayment of the Bridge Loan (whether voluntary or at scheduled maturity), the Company must pay an exit fee so that SWK receives an aggregate amount (inclusive of all principal, interest and origination and other fees paid to SWK under the SWK Credit Agreement on or prior to the prepayment date) equal to (a) 1.3 times the outstanding principal amount of the Bridge Loan, plus any and all paid-in-kind interest amounts, if ACER-001 Approval or such payment occurs on or prior to September 30, 2022, or (b) 1.5 times the outstanding principal amount of the Bridge Loan, plus any and all paid-in-kind interest amounts, if each of ACER-001 Approval and such payment does not occur

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until after September 30, 2022. The Bridge Loan contains a provision for the establishment of an alternative rate of interest if LIBOR were to no longer be available at any point while the Bridge Loan is outstanding. Under the Bridge Loan, the Company was required to maintain a cash and cash equivalents balance of not less than $4.0 million as of 20 days following receipt of FDA’s Complete Response Letter in June 2022 with respect to the Company’s NDA in respect of ACER-001 (sodium phenylbutyrate) for oral suspension for the treatment of patients with UCDs and is then required to maintain a cash and cash equivalents balance of not less than $6.5 million as of 40 days following receipt of that Complete Response Letter for the remainder of the time that the Bridge Loan is outstanding. The minimum cash balance would be reduced to $2.0 million in the event of positive safety and efficacy data for ACER-801 from a Phase 2a trial.

The Bridge Loan is secured by a first priority lien on all assets of the Company and any of its future subsidiaries pursuant to the SWK Security Agreement. The SWK Credit Agreement contains customary representations and warranties and affirmative and negative covenants. The Company paid to SWK $0.1 million in origination fees on the date on which the Bridge Loan was funded. The Bridge Loan contains certain provisions which could accelerate the maturity date of the outstanding loan should the Company be out of compliance with any of the stated covenants. At June 30, 2022, the Company did not deem probable any events that would give rise to such an acceleration. The Company classified the principal amortization payments of $1.9 million due within twelve months from the date of this report as current in the unaudited condensed balance sheet as of June 30, 2022.

In addition, the Company issued the SWK Warrant to purchase 150,000 shares of the Company’s common stock at an exercise price of $2.46 per share. SWK may exercise the SWK Warrant in accordance with the terms thereof for all or any part of such shares of common stock from the date on which the Bridge Loan was funded until and including March 4, 2029.

The Company recognized the fair value of the SWK Warrant for $0.3 million as additional paid in capital as of the date of the closing of the transaction.

The Company evaluated its compliance with all covenants with respect to the SWK Credit Agreement and concluded that it was in compliance as of June 30, 2022.

Secured Convertible Notes

On March 4, 2022, the Company also entered into the Secured Convertible Note Purchase Agreement with MAM Aardvark, LLC (“Marathon”) and Marathon Healthcare Finance Fund, L.P. (“Marathon Fund” and together with “Marathon” each a “Holder” and collectively the “Holders”) pursuant to which the Company issued and sold to the Holders the Secured Convertible Notes in an aggregate amount of $6.0 million (the “Convertible Note Financing”). The Convertible Note Financing closed on March 14, 2022 after satisfaction of closing conditions as set forth in the Secured Convertible Note Purchase Agreement. The proceeds of the Convertible Note Financing are being used to pay fees, costs and expenses related to the SWK Credit Agreement, the Secured Convertible Note Purchase Agreement and the Marathon Credit Agreement and for other working capital and general corporate purposes.

The Secured Convertible Notes bear interest at an annual rate of 6.5%, with such interest payable quarterly; provided, however, that until the first to occur of ACER-001 Approval and the repayment in full of the Bridge Loan, interest will not be payable in cash, but will accrue and be payable in cash upon the earlier of a) the repayment of all obligations under the Bridge Loan and termination of such Bridge Loan or b) within three business days of ACER-001 Approval. Subject to the restrictions set forth in an agreement among each of the Holders and SWK, as agent and lender, and any other intercreditor or subordination agreement entered into in connection with the Term Loan (defined below), each of the Holders has the right, during the 30-day periods beginning 12 months, 18 months and 24 months after the closing date of the Convertible Note Financing, to require the Company to redeem the Convertible Secured Note held by such Holder at a redemption price of the outstanding principal amount plus any accrued but unpaid interest. In the event of default, interest on the Secured Convertible Notes will increase to the lower of 11.5% per annum or the highest rate permitted by law. Each of the Holders also has the right to convert all or any portion of the outstanding principal amount plus any accrued but unpaid interest under the Convertible Secured Note held by such Holder into shares of common stock at a conversion price of $2.50 per share, subject to adjustment. Each Holder has certain rights with respect to the registration by the Company for resale of the shares of common stock issuable upon conversion of the Secured Convertible Note held by such Holder which are forth in the Secured Convertible Note Purchase Agreement. Any outstanding principal, together with all accrued and unpaid interest, will be payable on the earlier of the third anniversary of the date of issuance, or upon a change of control of the Company.

Pursuant to the Secured Convertible Note Purchase Agreement, the Secured Convertible Notes are secured by a lien on collateral representing substantially all assets of the Company, although such security interest is subordinated to the Company’s obligations under the SWK Credit Agreement and may also be subordinated to the Company’s obligations under the Marathon Credit Agreement.

The Company evaluated its compliance with all covenants with respect to the Secured Convertible Note Purchase Agreement and concluded that it was in compliance as of June 30, 2022.

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Marathon Credit Agreement

On March 4, 2022, the Company also entered into the Marathon Credit Agreement with the lenders party thereto and Marathon, as the agent, sole lead arranger and sole bookrunner, which provides for a senior secured term loan facility in an aggregate amount of up to $42.5 million in a single borrowing (the “Term Loan”). The Term Loan will be available to be borrowed only following ACER-001 Approval and until December 31, 2022 (i.e., if ACER-001 Approval does not occur on or before December 31, 2022, then the Term Loan will not be available unless the Company is able to obtain an extension for the time period beyond December 31, 2022, to the actual PDUFA target action date), and funding of the Term Loan is also subject to the satisfaction of conditions as set forth in the Marathon Credit Agreement. Although the Company’s resubmitted NDA in respect of ACER-001 (sodium phenylbutyrate) for oral suspension for the treatment of patients with UCDs has been accepted for substantive review by FDA, the PDUFA target action date is January 15, 2023. The Term Loan, if it becomes available, will be used to refinance certain other indebtedness of the Company (including the Bridge Loan), to pay fees, costs and expenses related to the Marathon Credit Agreement and for other working capital and general corporate purposes. Should the Term Loan become available, the Company will pay Marathon a commitment fee equal to 1.5% of the term loan amount. The Marathon Credit Agreement also includes an accordion feature pursuant to which the Company, Marathon and the lenders under the Marathon Credit Agreement may agree to increase the Term Loan commitments by up to an additional $50.0 million dollars for a total commitment of $92.5 million; provided, however, that any such increase is within the sole discretion of each party (i.e., the Company cannot unilaterally trigger such an increase).

The Term Loan would bear interest at an annual rate of 13.5% and would be payable quarterly in arrears. The Company would have the option to capitalize up to 4% of such interest commencing on the Term Loan Funding Date and continuing until the third anniversary of the Term Loan Funding Date. Commencing on the third anniversary of the Term Loan Funding Date, the principal outstanding amount of the Term Loan would amortize at a rate of 2.78%, payable monthly. The final maturity date of the Term Loan would be the earlier of six years after the Term Loan Funding Date or December 31, 2028. The Company would have the option to prepay the Term Loan in whole or in part at any time, subject to a prepayment fee equal to (a) if the prepayment is made prior to March 4, 2025, then the greater of 5% or the amount of interest that would have accrued from the date of prepayment until March 4, 2025, (b) if the prepayment is made on or after March 4, 2025, but prior to March 4, 2026, then 3%, (c) if the prepayment is made on or after March 4, 2026, but prior to March 4, 2027, then 2%, or (d) if the prepayment is made on or after March 4, 2027, then 1%.

The Term Loan would be secured by a first priority lien on all assets of the Company and any of its future subsidiaries pursuant to a Guarantee and Collateral Agreement to be entered into on the Term Loan Funding Date between the Company and Marathon, as agent (the “Marathon Security Agreement”). The Marathon Credit Agreement contains customary representations and warranties and affirmative and negative covenants. The Company paid $0.2 million in commitment fees to Marathon in connection with obtaining the commitments in respect of the Term Loan and will pay $0.6 million in additional commitment fees to Marathon following ACER-001 Approval or any change of control of the Company or sale or transfer of the ACER-001 product.

In connection with the Marathon Credit Agreement, on March 4, 2022, the Company, Marathon and the Marathon Fund also entered into the Royalty Agreement pursuant to which, in the event of the funding of the Term Loan, the Company will pay Marathon and the Marathon Fund, on a quarterly basis, 2% of certain aggregate commercial revenue from sales of ACER-001 during that quarter (i.e., 2% of the net sales and of the amount of certain other payments), subject to a cap on the aggregate amount of such payments of $15.0 million. Upon a change of control of the Company or the sale of the ACER-001 business to a third party, the Company would pay Marathon and the Marathon Fund the difference between $15.0 million and the aggregate amount of the payments previously made by the Company to Marathon and the Marathon Fund pursuant to the Royalty Agreement.

As of June 30, 2022, the Company had not triggered the conditions in order to draw on the Term Loan, and as such had not triggered the associated Royalty Agreement.

The Company engaged an exclusive financial advisor with respect to the financings contemplated by the SWK Credit Agreement, the Secured Convertible Note Purchase Agreement and the Marathon Credit Agreement. In connection with the funding of the Bridge Loan and the Convertible Note Financing, the Company paid its financial advisor a fee of $0.5 million for its services. In connection with a funding of the Term Loan, the Company expects to pay the same financial advisor an additional fee of approximately $0.7 million for its services.

The Company is eligible to elect the fair value option under ASC 815 and bypass analysis of potential embedded derivatives and further analysis of bifurcation of any such financial instruments and has elected such option. The Company recognized the SWK Warrant at fair value as of the date of the close of the transaction and recorded it in equity. The Bridge Loan and Secured Convertible Notes met the definition of a “recognized financial liability” which is an acceptable financial instrument eligible for the fair value option under ASC 825-10-15-4 and do not meet the definition of any of the financial instruments found within ASC 825-10-15-5 that are not eligible for the fair value option. Therefore, both the Bridge Loan and Secured Convertible Notes are recorded at their fair value upon issuance and subsequently re-measured at each reporting period until their maturity, prepayment or conversion. Additionally, all issuance costs incurred in connection with a debt instrument that is measured at fair value pursuant to the election of

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the fair value option are expensed during the period the debt is acquired. The Bridge Loan was recorded at fair value of $6.2 million after allocating the fair value of the SWK Warrant of $0.3 million.

The Company incurred $1.2 million of debt issuance costs, which were expensed as incurred due to the election of the fair value option and were included in interest expense in the accompanying unaudited condensed statement of operations for the six months ended June 30, 2022. Debt issuance costs were comprised of $0.5 million that related to the costs and expense paid directly to SWK and the Holders, $0.7 million of costs and expenses paid to the Company’s financial advisor, and other legal and accounting costs. The fee of $0.2 million paid in connection with obtaining the commitments in respect of the Term Loan was paid to Marathon through gross proceeds received from the Secured Convertible Notes. The Company recorded this fee as expense during the three months ended June 30, 2022.

7.FAIR VALUE MEASUREMENTS

In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy within which the entire fair value measurement falls is based on the lowest level input that is significant to the fair value measurement in its entirety. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability.

The 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. At each reporting period, the Company reviews the assets and liabilities that are subject to ASC 815-40. At each reporting period, all assets and liabilities for which the fair value measurement is based on significant unobservable inputs or instruments which trade infrequently and therefore have little or no price transparency are classified as Level 3. The valuation methodologies used for the Company’s financial instruments measured on a recurring basis at fair value, including the general classification of such instruments pursuant to the valuation hierarchy, is set forth in the tables below.

The following table presents the Company’s assets and liabilities that are measured and recognized at fair value on a recurring basis classified under the appropriate level of the fair value hierarchy as of June 30, 2022.

	As of June 30, 2022				Fair Value Measurements As of June 30, 2022
	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
Assets:
Money Market Funds in Cash Equivalents	$	13,969,744	$	13,969,744	$	13,969,744	$	—	$	—
Liabilities:
Debt:
Secured Convertible Notes	$	4,321,200	$	4,321,200	$	—	$	—	$	4,321,200
Bridge Loan	$	4,084,709	$	4,084,709	$	—	$	—	$	4,084,709
	$	8,405,909	$	8,405,909	$	—	$	—	$	8,405,909

A lattice-based model was used to estimate the fair value of the Secured Convertible Notes at June 30, 2022. The lattice model utilizes a “decision tree,” whereby future movement in the Company’s common stock price is estimated based on a volatility factor. The Company classified the fair value of the Secured Convertible Notes as a Level 3 measurement due to the lack of observable market data. The lattice model requires the development and use of assumptions, including the Company’s stock price volatility returns, an appropriate risk-free interest rate, default intensity rate, and expected recovery rate given default. The Company updated its estimate of fair value of the Bridge Loan based on the probability-weighted net present value of future cash flows at June 30, 2022

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The significant unobservable inputs used in calculating the fair value of the Secured Convertible Notes and Bridge Loan represent management’s best estimates and involve inherent uncertainties and the application of management’s judgment. Any significant changes in the inputs described herein may result in significantly higher or lower fair value measurements. During the three and six months ended June 30, 2022, the Company recognized a reduction in the fair value of the Bridge Loan of $2.1 million, through non-operating income in the statement of operations. During the three and six months ended June 30, 2022, the Company recognized a reduction in the fair value of the Secured Convertible Notes of $2.7 million and $1.7 million, respectively, through non-operating income in the statement of operations.

	December 31, 2021		Loan Received		Payments		Accretion/ Interest Accrued		Adjustment to Fair Value Mark to Market			June 30, 2022
Secured Convertible Notes	$	—	$	6,000,000	$	—	$	—	$	(1,678,800	)	$	4,321,200
Bridge Loan	$	—	$	6,172,969	$	—	$	—	$	(2,088,260	)	$	4,084,709
	$	—	$	12,172,969	$	—	$	—	$	(3,767,060	)	$	8,405,909

8. COMMITMENTS AND CONTINGENCIES

License Agreements

In April 2014, the Company obtained exclusive rights to intellectual property relating to ACER-001 for the treatment of inborn errors of branched-chain amino acid metabolism, including MSUD, and preclinical and clinical data, through a license agreement with Baylor College of Medicine (“BCM”). Under the terms of the agreement, as amended, the Company has worldwide exclusive rights to develop, manufacture, use, sell and import licensed products as defined in the agreement. The license agreement requires the Company to make certain upfront and annual payments to BCM, as well as reimburse certain legal costs, make payments upon achievement of defined milestones, and pay royalties in the low single-digit percent range on net sales of any developed product over the royalty term.

In August 2016, the Company signed an agreement with Assistance Publique—Hôpitaux de Paris, Hôpital Européen Georges Pompidou (“AP-HP”) (via its Department of Clinical Research and Development) granting the Company the exclusive worldwide rights to access and use data from a randomized, controlled clinical study of celiprolol. The Company used this pivotal clinical data to support an NDA regulatory filing for EDSIVO^TM for the treatment of vEDS. The agreement requires the Company to make certain upfront payments to AP-HP, as well as reimburse certain costs and make payment of royalties in the low single-digit percent range on net sales of celiprolol over the royalty term.

In September 2018, the Company entered into a License Agreement for Development and Exploitation with AP-HP to acquire the exclusive worldwide intellectual property rights to three European patent applications relating to certain uses of celiprolol including (i) the optimal dose of celiprolol in treating vEDS patients, (ii) the use of celiprolol during pregnancy and (iii) the use of celiprolol to treat kyphoscoliotic Ehlers-Danlos syndrome (type VI). Pursuant to the agreement, the Company will reimburse AP-HP for certain costs and will pay annual maintenance fee payments. Subject to a minimum royalty amount, the Company will also pay royalty payments on annual net sales of celiprolol during the royalty term in the low single digit percent range, depending upon whether there is a valid claim of a licensed patent. Under the agreement, the Company will control and pay the costs of ongoing patent prosecution and maintenance for the licensed applications. The Company may terminate the agreement in its sole discretion upon written notice to AP-HP, and AP-HP may terminate the agreement in the event the Company fails to make the required payments after notice and opportunity to cure. Additionally, the agreement will terminate if the Company terminates clinical development, marketing approval is withdrawn by the health or regulatory authorities in all countries, the Company ceases to do business or there is a procedure of winding-up by court decision against the Company. The Company subsequently filed three U.S. patent applications on this subject matter in October 2018.

In December 2018, the Company entered into an exclusive license agreement with Sanofi granting the Company worldwide rights to ACER-801, a clinical-stage, selective, non-peptide tachykinin NK3 receptor antagonist. The agreement required the Company to make a certain upfront payment to Sanofi, make payments upon achievement of defined development and sales milestones and pay royalties on net sales of ACER-801 over the royalty term. The Company plans to initially pursue development of ACER-801 as a potential treatment for iVMS.

Collaboration Agreement

On March 19, 2021, the Company entered into the Collaboration Agreement with Relief providing for the development and commercialization of ACER-001 for the treatment of various inborn errors of metabolism, including for the treatment of UCDs and MSUD. The Collaboration Agreement is the culmination of the Option Agreement previously entered into between the Company and Relief on January 25, 2021, which provided Relief with an exclusive period of time up to June 30, 2021 for the parties to enter into a

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mutually acceptable definitive agreement with respect to the potential collaboration and license arrangements. In consideration for the grant of the exclusivity option, (i) the Company received from Relief an upfront non-refundable payment of $1.0 million, (ii) Relief provided to the Company a 12-month secured loan in the principal amount of $4.0 million with interest at a rate equal to 6% per annum, as evidenced by a promissory note the Company issued to Relief, and (iii) the Company granted Relief a security interest in all of its assets to secure performance of the promissory note, as evidenced by a security agreement. Upon signing the Collaboration Agreement, the Company received a $10.0 million cash payment from Relief (the $14.0 million “Reimbursement Payment” from Relief to the Company, offset by repayment of the $4.0 million outstanding balance of the prior loan, plus interest), and Relief released its security interest in the Company’s assets pursuant to the Promissory Note. Under the terms of the Collaboration Agreement, Relief committed to pay the Company Development Payments of up to an additional $20.0 million for U.S. development and commercial launch costs for the UCDs and MSUD indications. During the three months ended June 30, 2021, the Company received from Relief the $10.0 million First Development Payment. The Company was contractually entitled to receive from Relief an additional $10.0 million Second Development Payment conditioned upon FDA’s acceptance of an NDA for ACER-001 in a UCD for filing and review. This acceptance was received on October 4, 2021. On October 6, 2021, the Company entered into a Waiver and Agreement with Relief to amend the timing for the Second Development Payment. The Company received the Second Development Payment in two $5.0 million tranches on each of October 12, 2021 and January 14, 2022. Further, the Company retained development and commercialization rights in the U.S., Canada, Brazil, Turkey and Japan (“Acer Territory”). The companies will split net profits from the Acer Territory 60%:40% in favor of Relief. Relief licensed the rights for the rest of the world (“Relief Territory”), where the Company will receive from Relief a 15% royalty on all net sales received in the Relief Territory. The Company could also receive a total of $6.0 million in milestone payments based on the first European (EU) marketing approvals of ACER-001 for a UCD and MSUD. There is no guarantee that ACER-001 will receive regulatory authority approval in any territory or become commercially available for the indications under investigation.

Paycheck Protection Program (“PPP”) Loan

On April 11, 2020, the Company was advised that its principal bank, JPMorgan Chase Bank, N.A., had approved a $0.6 million loan under the PPP pursuant to the CARES Act that was signed into law on March 27, 2020.

As a U.S. small business, the Company qualified for the PPP, which allows businesses and nonprofits with fewer than 500 employees to obtain loans of up to $10 million to incent companies to maintain their workers as they manage the business disruptions caused by the COVID-19 pandemic.

The loan, evidenced by a promissory note to JPMorgan Chase Bank, N.A. as lender, had a term of two years, was unsecured, and was guaranteed by the Small Business Administration. The loan bore interest at a fixed rate of one percent per annum, with the first six months of interest and principal deferred. Some or all of a loan may be forgiven if at least 75% of the loan proceeds are used by the Company to cover payroll costs, including benefits, and if the Company maintains its employment and compensation within certain parameters during the period following the loan origination date and complies with other relevant conditions. On June 5, 2020, the Payroll Protection Flexibility Act of 2020 was signed into law, adjusting certain terms of the loans issued under the PPP, including extending the initial deferral period from six to up to ten months, reducing from 75% to 60% the portion of loan proceeds required to be used to cover payroll costs, and allowing borrowers to elect a 24-week rather than an eight-week period related to employment and compensation provisions.

The Company accounted for the loan according to ASC 470. The Company was advised by JPMorgan Chase Bank, N.A. that the principal and interest associated with its PPP loan were forgiven in full as of June 10, 2021.

Litigation

From time to time, the Company may become involved in litigation or proceedings relating to claims arising out of its operations. To the extent that the Company incurs legal costs associated with any potential loss contingency, those legal costs are expensed as incurred.

The Securities Class Action and Stockholder Derivative Actions

On July 1, 2019, plaintiff Tyler Sell filed a putative class action lawsuit, Sell v. Acer Therapeutics Inc. et al., No. 1:19-cv-06137GHW, against the Company, Chris Schelling and Harry Palmin, in the U.S. District Court for the Southern District of New York. The Complaint alleged that the Company violated federal securities laws by allegedly making material false and misleading statements regarding the likelihood of FDA approval for the EDSIVO^TM NDA. With the selection of a lead plaintiff, the case was later captioned Skiadas v. Acer Therapeutics Inc. et al. The parties reached an agreement to settle this action for a payment of $8.4 million, which was approved by the Court on January 7, 2022. Payment of the settlement was made by the Company’s insurance carriers. As of June 30, 2022, the Company has a remaining recognized liability of $0.1 million for costs related to both the derivative and class action cases in other current liabilities and has also recognized an asset of an equal amount in other current assets representing the expected remaining recovery from its insurance carriers.

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On August 12, 2019, a stockholder derivative action, Gress v. Aselage et al., No. 1:19-cv-01505-MN, was filed in the U.S. District Court for the District of Delaware against certain of the Company’s present and former officers and directors, asserting damages resulting from the alleged breach of their fiduciary duties, based on the same facts at issue in the Skiadas case. On March 17, 2020, a second stockholder derivative action, Giroux v. Amello et al., No. 1:20-cv-10537-GAO, was filed in the U.S. District Court for the District of Massachusetts against certain of the Company’s present and former officers and directors, asserting claims based on the same facts at issue in the Skiadas and Gress cases. On June 23, 2020, a third stockholder derivative action, King v. Schelling, et al., No. 1:20-cv-04779-GHW, was filed in the U.S. District Court for the Southern District of New York against certain of the Company’s present and former officers and directors that arises from the same facts underlying the Skiadas, Gress, and Giroux cases. On July 6, 2020, a fourth stockholder derivative action, Diaz v. Amello et al., No. 1:20-cv-00909-MN, was filed in the U.S. District Court for the District of Delaware. By Stipulation and Order dated August 7, 2020, the Gress and Diaz cases were consolidated under the caption In re Acer Therapeutics Inc. Derivative Litigation, Lead Case No. 1:19-cv-01505-MN. As disclosed previously, the parties reached an agreement to settle all of the derivative cases. At a hearing held on May 12, 2021 in the District Court of Massachusetts, the Court administering the matter, the settlement was approved. Payment of the settlement amount of $0.5 million, plus legal fees and costs in excess of the retention (deductible) amount, has been made by the Company’s insurance carriers.

Commitments Under Clinical Trial Agreements

The Company has entered into agreements with two CROs in connection with the conduct of two separate clinical trials for ACER-801 and EDSIVO^TM. As a part of those agreements, the Company has agreed to pay any third-party costs or subcontracts associated with those agreements which are unpaid by the CRO. Such reimbursement would apply only to costs approved in advance by the Company. Those CRO agreements are subject to termination at any time, with or without cause, by the Company, in which case only costs earned or non-cancellable to date of termination would remain subject to reimbursement.

9. STOCKHOLDERS’ (DEFICIT) EQUITY

At-the-Market Facility

On November 9, 2018, the Company entered into a sales agreement with Roth Capital Partners, LLC, and on March 18, 2020, the Company entered into an amended and restated sales agreement with JonesTrading Institutional Services LLC and Roth Capital Partners, LLC. The agreement provides a facility for the offer and sale of shares of common stock from time to time having an aggregate offering price of up to $50.0 million depending upon market demand, in transactions deemed to be an “at-the-market” (“ATM”) offering. The Company has no obligation to sell any shares of common stock pursuant to the agreement and may at any time suspend sales pursuant to the agreement. Each party may terminate the agreement at any time without liability. The Company will need to keep current its shelf registration statement and the offering prospectus relating to the ATM facility, in addition to providing certain periodic deliverables under the sales agreement, in order to use such facility. Due to the SEC’s “baby shelf rules,” which prohibit companies with a public float of less than $75 million from issuing securities under a shelf registration statement in excess of one-third of such company’s public float in a 12-month period, the Company is currently only able to issue a limited number of shares which aggregate to not more than one-third of the Company’s public float. During the three and six months ended June 30, 2022, the Company sold 1,062,547 shares of common stock through its ATM facility at a gross sale price of $3.0719 per share, for gross proceeds of $3.3 million. Proceeds, net of $0.2 million of fees and offering costs, were $3.1 million. During the six months ended June 30, 2021, the Company sold an aggregate of 877,107 additional shares of common stock through the ATM at an average gross sale price of $3.1692 per share, for gross proceeds of $2.8 million. Proceeds for the six months ended June 30, 2021, net of $0.2 million of fees and offering costs, were $2.6 million. As of June 30, 2022, $36.7 million remained available under the Company’s ATM facility. See Note 11 for a discussion of subsequent ATM facility activity.

Common Stock Purchase Agreement

On April 30, 2020, the Company entered into an equity line purchase agreement and a registration rights agreement pursuant to which Lincoln Park has committed to purchase up to $15.0 million of the Company’s common stock. Under the terms and subject to the conditions of the purchase agreement, the Company has the right, but not the obligation, to sell to Lincoln Park, and Lincoln Park is obligated to purchase up to $15.0 million of the Company’s common stock, with $11.8 million obligation remaining as of June 30, 2022. Such sales of common stock by the Company will be subject to certain limitations, and may occur from time to time, at the Company’s sole discretion, over the 36-month period commencing on June 8, 2020. The number of shares the Company may sell to Lincoln Park on any single business day in a regular purchase is 50,000, but that amount may be increased up to 100,000 shares, depending upon the market price of the Company’s common stock at the time of sale and subject to a maximum limit of $1.0 million per regular purchase. The purchase price per share for each such regular purchase will be based on prevailing market prices of the Company’s common stock immediately preceding the time of sale as computed under the purchase agreement. In addition to regular purchases, the Company may also direct Lincoln Park to purchase other amounts as accelerated purchases or as additional accelerated purchases if the closing sale price of the common stock exceeds certain threshold prices as set forth in the purchase agreement.

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Under applicable rules of the Nasdaq Capital Market, in no event may the Company issue or sell to Lincoln Park under the purchase agreement more than 19.99% of the shares of the Company’s common stock outstanding immediately prior to the execution of the purchase agreement, unless (i) the Company obtains stockholder approval to issue shares of common stock in excess of the Exchange Cap or (ii) the average price of all applicable sales of common stock to Lincoln Park under the purchase agreement equals or exceeds $2.1668, such that issuances and sales of the common stock to Lincoln Park under the purchase agreement would be exempt from the issuance limitation under applicable Nasdaq rules.

Lincoln Park has no right to require the Company to sell any shares of common stock to Lincoln Park, but Lincoln Park is obligated to make purchases as the Company directs, subject to certain conditions. In all instances, the Company may not sell shares of its common stock to Lincoln Park under the purchase agreement if doing so would result in Lincoln Park beneficially owning more than 9.99% of its common stock. The Company determined that the right to sell additional shares represents a freestanding put option under ASC 815 Derivatives and Hedging, but has a fair value of zero, and therefore no additional accounting was required.

Actual sales of shares of common stock to Lincoln Park under the purchase agreement will depend on a variety of factors to be determined by the Company from time to time, including, among others, market conditions, the trading price of the common stock and determinations by the Company as to the appropriate sources of funding for the Company and its operations. However, there can be no assurance that the Company will be able to receive the entire obligation amount from Lincoln Park because the purchase agreement contains limitations, restrictions, requirements, events of default, and other provisions that could limit the Company’s ability to cause Lincoln Park to buy common stock from the Company.

The proceeds under the purchase agreement to the Company will depend on the frequency and prices at which the Company sells shares of its stock to Lincoln Park. The Company issued 148,148 shares of common stock to Lincoln Park as a commitment fee in connection with entering into the purchase agreement. The $0.4 million fair value of the commitment fee shares was recorded to General and administrative expenses along with other costs incurred in connection with entering into the purchase agreement.

During the three and six months ended June 30, 2022, the Company sold 300,000 shares of common stock under its purchase agreement with Lincoln Park at a weighted average gross sale price of $1.25 per share, resulting in proceeds of $0.4 million. During the three months ended June 30, 2021, the Company did not sell any shares of common stock under its purchase agreement with Lincoln Park. During the six months ended June 30, 2021, the Company sold 200,000 shares of common stock under the purchase agreement with Lincoln Park at a weighted average price of $2.47 per share, resulting in proceeds of $0.5 million.

2018 Stock Incentive Plan

The Company’s 2018 Stock Incentive Plan (the “2018 Plan”), adopted on May 14, 2018, originally provided for the grant of up to 500,000 shares of common stock as stock options, restricted stock, stock appreciation rights, restricted stock units, performance-based awards and cash-based awards that may be settled in cash, stock or other property to employees, executive officers, directors, and consultants.

In addition to the 500,000 shares, the total number of shares reserved for issuance under the 2018 Plan also consists of the sum of the number of shares subject to outstanding awards under the Company’s 2010 Stock Incentive Plan, as amended and restated (the “2010 Plan”), and the 2013 Stock Incentive Plan, as amended (the “2013 Plan”), as of the effective date of the 2018 Plan that are subsequently forfeited or terminated for any reason prior to being exercised or settled, plus the number of shares subject to vesting restrictions under the 2010 Plan and the 2013 Plan on the effective date of the 2018 Plan that are subsequently forfeited, plus the number of shares reserved but not issued or subject to outstanding grants under the 2010 Plan and the 2013 Plan as of the effective date of the 2018 Plan, up to a maximum of 635,170 shares in aggregate. In addition, the number of shares authorized for issuance under the 2018 Plan is automatically increased (the “evergreen provision”) on the first day of each fiscal year beginning on January 1, 2019, and ending on (and including) January 1, 2028, in an amount equal to the lesser of (i) 4% of the outstanding shares of common stock on the last day of the immediately preceding fiscal year, or (ii) another amount (including zero) determined by the Company’s Board of Directors. On January 1, 2022 and 2021, 572,410 and 529,325 additional shares, respectively, were authorized according to the evergreen provision. On February18, 2022, the Company’s Board of Directors amended and restated the 2018 Plan to add a provision permitting the grant of inducement awards under Nasdaq Marketplace Rule 5635(c)(4) to eligible recipients and initially reserved 200,000 shares of the Company’s common stock for issuance pursuant to inducement awards granted under the 2018 Plan. Any shares subject to awards granted under the 2018 Plan that are forfeited or terminated before being exercised or settled or are not delivered to the participant because such award is settled in cash, will again become available for issuance under the 2018 Plan. Shares withheld to satisfy the grant, exercise price or tax withholding obligation related to an award will again become available for issuance under the 2018 Plan.

The 2018 Plan is administered by the Company’s Board of Directors, which may in turn delegate authority to administer the plan to a committee such as the Compensation Committee, referred to herein as the 2018 Plan administrator. Subject to the terms of the 2018 Plan, the 2018 Plan administrator will determine recipients, the number of shares or amount of cash subject to awards to be granted, whether an option is to be an incentive stock options or non-incentive stock options and the terms and conditions of the stock

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awards, including the period of their exercisability and vesting. Subject to the limitations set forth below, the 2018 Plan administrator will also determine the exercise price of options granted under the 2018 Plan. The 2018 Plan expressly provides that, without the approval of the stockholders, the 2018 Plan administrator does not have the authority to reduce the exercise price of any outstanding stock options or stock appreciation rights under the 2018 Plan (except in connection with certain corporate transactions, such as stock splits, certain dividends, recapitalizations, reorganizations, mergers, spin-offs and the like), or cancel any outstanding underwater stock options or stock appreciation rights in exchange for cash or new stock awards under the 2018 Plan.

Option awards are generally granted with an exercise price equal to the fair value of the common stock at the date of grant and have contractual terms of ten years. Stock options granted to executive officers and employees generally vest either 1) over a four-year period, with 25% vesting on the one-year anniversary of the grant date and the remaining 75% vesting quarterly over the remaining three years, assuming continued service, and with vesting acceleration in full immediately prior to a change in control, or 2) for certain stock options granted on September 18, 2019, 50% vest on each of January 1, 2021 and January 1, 2022, assuming continued service, and with vesting acceleration in full immediately prior to a change in control. For certain grants such as those made to members of the Company’s Board of Directors, vesting occurs 12 months after the date of the grant. Restricted stock units generally vest and are settled upon the first anniversary of the grant date. There were no grants of restricted stock units during the six months ended June 30, 2022 or 2021 and no unvested restricted stock units as of June 30, 2022 or December 31, 2021.

At June 30, 2022, 333,376 shares of common stock remained available for the grant of future awards under the 2018 Plan.

2013 Stock Incentive Plan

The Company’s 2013 Plan provided for the issuance of up to 165,000 shares of common stock as incentive or non-qualified stock options and/or restricted common stock to employees, officers, directors, consultants and advisers. Option awards were generally granted with an exercise price equal to the fair value of the common stock at the date of grant and had contractual terms of ten years. At June 30, 2022, all shares available under the 2013 Plan were subject to outstanding equity awards, and no new awards may be granted under the 2013 Plan.

2010 Stock Incentive Plan

The Company’s 2010 Plan, as amended and restated, provided for the grant of up to 470,170 shares of common stock as incentive or non-qualified stock options, stock appreciation rights, restricted stock units and/or restricted common stock to employees, officers, directors, consultants and advisers. Option awards were generally granted with an exercise price equal to the fair value of the common stock at the date of grant and had contractual terms of ten years. At June 30, 2022, all shares available under the 2010 Plan were subject to outstanding equity awards, and no new awards may be granted under the 2010 Plan. 

Stock Plan Activity

A summary of option activity under the 2018 Plan, 2013 Plan, and 2010 Plan for the six months ended June 30, 2022, is as follows:

Year-to-Date Activity	Number of Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value (in Millions)
Options outstanding at December 31, 2021		1,954,975		$	8.16		7.8
Granted		958,000		$	2.33
Cancelled/forfeited		(62,188	)	$	4.12
Options outstanding at June 30, 2022		2,850,787		$	6.29		8.0	$	—
Options exercisable at June 30, 2022		1,322,180		$	9.80		6.6	$	—

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At June 30, 2022, there was $3.3 million of unrecognized compensation expense related to the stock-based compensation arrangements granted under all plans. The average remaining vesting period for options was 3.0 years. The weighted average grant date fair value of options granted during the three and six months ended June 30, 2022 was $1.97 and $1.99, respectively. The weighted average grant date fair value of options granted during the three and six months ended June 30, 2021was $2.18 and $2.83, respectively. The fair value of shares vested during the three and six months ending June 30, 2022 was $0.4 million and $1.5 million, respectively. The fair value of shares vested during the three and six months ending June 30, 2021 was $0.3 million and $1.2 million, respectively. The amount of stock-based compensation expense recorded to research and development expenses and to general and administrative expenses is detailed in table below:

	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
Stock-based compensation
Research and development	$	158,880	$	176,534	$	299,320	$	344,580
General and administrative		301,897		418,129		635,554		809,519
Total stock-based compensation expense	$	460,777	$	594,663	$	934,874	$	1,154,099

Warrants issued to SWK

	Six Months Ended June 30,
	2022				2021
	Number		Weighted Average Exercise Price		Number		Weighted Average Exercise Price
Granted during the period		150,000	$	2.46		—	$	—
Outstanding at end of the period		150,000	$	2.46		—	$	—
Exercisable at end of the period		150,000	$	2.46
Weighted average remaining life	6.8 years					—

10. NET LOSS PER SHARE (AS RESTATED)

Basic net loss per share is computed by dividing the net loss in each period by the weighted-average number of common shares outstanding during such period. Diluted net loss per share is computed similarly to basic net loss per share except that the denominator is increased to include the number of additional common shares that would have been outstanding if the potential common shares had been issued and if the additional common shares were dilutive. For the periods presented, common stock equivalents, consisting of stock-based awards and the SWK Warrant, were not included in the calculation of the diluted loss per share because to do so would be anti-dilutive. The SWK Warrant price is subject to a proportionate adjustment in the event of a stock dividend or stock split. The Company concluded that they should be deemed participating securities. However, as the Company is currently operating in a net loss position as of the second quarter of 2022 and has not declared any dividends, such inclusion of the participating securities related to the SWK Warrant (as common stock equivalents) would be anti-dilutive and thus would be excluded from the calculation of net loss per share. When calculating diluted net loss per share, the Company includes, only if dilutive, the potential common shares associated with the Secured Convertible Notes using the “if converted” method, which adjusts the numerator for any impact to earnings for the period and includes in the denominator the shares assumed to be converted at the beginning of the period.

A reconciliation of the numerator and denominator used in the calculation of basic and diluted net loss per common share for the three and six months ended June 30, 2022 is as follows:

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	For the Three Months Ended June 30, 2022			For the Six Months Ended June 30, 2022
Numerator:
Net loss	$	(2,667,036	)	$	(11,846,040	)
Denominator:
Basic:
Weighted average shares of common stock outstanding		15,273,707			14,794,637
Diluted:
Weighted average shares of common stock outstanding		15,273,707			14,794,637
Effect of potentially dilutive shares (1)		2,407,693			1,577,900
Total weighted average shares of common stock and potentially dilutive shares		17,681,400			16,372,537
Net loss per common share:
Basic:
Net loss applicable to common stockholders	$	(2,667,036	)	$	(11,846,040	)
Weighted average shares of stock outstanding, basic		15,273,707			14,794,637
Basic net loss per common share	$	(0.17	)	$	(0.80	)
Diluted:
Net loss applicable to common shareholders, diluted (1)	$	(5,308,236	)	$	(13,524,840	)
Weighted average shares of stock outstanding, diluted		17,681,400			16,372,537
Diluted net loss per common share	$	(0.30	)	$	(0.83	)

(1) In calculating diluted net loss per share, we excluded the impact of changes in the fair value of the Secured Convertible Notes of $2.6 million and $1.7 million, for the three and six months ended June 30, 2022, respectively. The 2,407,693 shares and 1,577,900 shares for the three and six months ended June 30, 2022, respectively, are the weighted average shares associated with the original principal amount of the Secured Convertible Notes and the shares that may be issuable upon the conversion of accrued interest owed at the beginning of the period.

As of June 30, 2022 and 2021, the number of shares of common stock underlying potentially dilutive securities excluded from the calculation of diluted net loss per share, because our net loss meant that their inclusion would have been anti-dilutive for those periods, consists of:

	June 30,
	2022		2021
Options to purchase common stock		2,850,787		1,751,475
SWK Warrant		150,000		—
Total		3,000,787		1,751,475

11. SUBSEQUENT EVENTS

Subsequent to June 30, 2022, the Company sold an aggregate of 133,206 shares of common stock under its ATM facility at an average gross sale price of $1.51 per share, resulting in gross and net proceeds of $0.2 million.

Subsequent to June 30, 2022, the Company sold 275,000 shares of common stock under its purchase agreement with Lincoln Park at an average gross sale price of $1.38 per share, resulting in gross proceeds of $0.4 million.

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

The following discussion and analysis of our financial condition is as of June 30, 2022. Our results of operations and cash flows should be read in conjunction with our unaudited condensed financial statements and notes thereto included elsewhere in this report and the audited financial statements and the notes thereto included in our Form 10-K for the year ended December 31, 2021.

Forward-Looking Statements

This Quarterly Report on Form 10-Q contains forward-looking statements which are made pursuant to the safe harbor provisions of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Statements contained in this report, other than statements of historical fact, constitute “forward-looking statements.” The words “expects,” “believes,” “hopes,” “anticipates,” “estimates,” “may,” “could,” “intends,” “exploring,” “evaluating,” “progressing,” “proceeding,” and similar expressions are intended to identify forward-looking statements.

These forward-looking statements do not constitute guarantees of future performance. Investors are cautioned that statements which are not strictly historical statements, including, without limitation, statements regarding current or future financial payments, costs, returns, royalties, performance and position, plans and objectives for future operations, plans and objectives for product development, plans and objectives for present and future clinical trials and results of such trials, plans and objectives for regulatory approval, litigation, intellectual property, product development, manufacturing plans and performance, management’s initiatives and strategies, and the development of our product candidates, including ACER-001 (sodium phenylbutyrate), ACER-801 (osanetant), EDSIVO™ (celiprolol), and ACER-2820 (emetine), constitute forward-looking statements. Such forward-looking statements are subject to a number of risks and uncertainties that could affect our ability to successfully implement our business strategy and cause actual results to differ materially from those anticipated. You should carefully consider all of the information in this report and, in particular, the principal risks set forth above under “Summary Risk Factors” and all of the other specific factors further discussed in Item 1A of this report, “Risk Factors,” before deciding whether to invest in our company:

Forward-looking statements speak only as of the date made. We assume no obligation or undertaking to update any forward-looking statements to reflect any changes in expectations with regard thereto or any change in events, conditions or circumstances on which any such statement is based. You should, however, review additional disclosures we make in the reports we file with the Securities and Exchange Commission (“SEC”), including but not limited to the Risk Factors associated with our business.

Overview

We are a pharmaceutical company focused on the acquisition, development, and commercialization of therapies for serious rare and life-threatening diseases with significant unmet medical needs. Our pipeline includes four investigational programs: ACER-001 (sodium phenylbutyrate) for the treatment of various inborn errors of metabolism, including UCDs and MSUD; ACER-801 (osanetant) for the treatment of induced vasomotor symptoms (“iVMS”); EDSIVO™ (celiprolol) for the treatment of vascular Ehlers-Danlos syndrome (“vEDS”) in patients with a confirmed type III collagen (COL3A1) mutation; and ACER-2820 (emetine), a host-directed therapy against a variety of viruses, including cytomegalovirus, Zika, dengue, Ebola, and COVID-19. Each of our product candidates is believed to present a comparatively de-risked profile, having one or more of a favorable safety profile, clinical proof-of-concept data, mechanistic differentiation, and/or accelerated pathways for development through specific programs and procedures established by FDA.

Going Concern

The accompanying financial statements have been prepared in conformity with accounting principles generally accepted in the U.S. (“GAAP”), which contemplate our continuation as a going concern. We have not established a source of commercial product revenues and, as such, have been dependent on funding operations through the sale of equity securities, through a collaboration agreement, and through debt instruments. Since inception, we have experienced significant losses and incurred negative cash flows from operations. We have an accumulated deficit of $126.4 million as of June 30, 2022 and expect to incur further losses over the foreseeable future as we develop our business. We have spent, and expect to continue to spend, a substantial amount of funds in connection with implementing our business strategy, including our planned product development efforts and potential precommercial activities.

As of June 30, 2022, we had cash and cash equivalents of $14.5 million and current liabilities of $17.5 million, which include $6.3 million associated with deferred collaboration funding. Our cash and cash equivalents available at June 30, 2022 are expected to be sufficient to fund our anticipated operating and capital requirements through the third quarter of 2022.

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We will need to raise additional capital to fund continued operations beyond the third quarter of 2022 because neither FDA approval of ACER-001 nor subsequent product revenues are assured. We may not be successful in our efforts to raise additional funds or achieve profitable operations. We continue to explore potential opportunities and alternatives to obtain the additional resources that will be necessary to support our ongoing operations beyond the third quarter of 2022, including raising additional capital through either private or public equity or debt financing or additional program collaborations or non-dilutive funding, as well as using our ATM facility which has $36.7 million available as of June 30, 2022 and/or our remaining $11.8 million available under the equity line facility entered into on April 30, 2020 with Lincoln Park. (See At-the-Market Facility and Common Stock Purchase Agreement in Note 9 to our unaudited condensed financial statements.) Due to the SEC’s “baby shelf rules,” which prohibit companies with a public float of less than $75 million from issuing securities under a shelf registration statement in excess of one-third of such company’s public float in a 12-month period, we are currently only able to issue a limited number of shares under our ATM facility which aggregate to no more than one-third of our public float. Additionally, there can be no assurance that we will be able to receive the entire obligation amount from Lincoln Park because the purchase agreement contains limitations, restrictions, requirements, events of default and other provisions that could limit our ability to cause Lincoln Park to buy common stock from us. (See Note 11 to our unaudited condensed financial statements for a discussion of subsequent ATM facility activity.) As noted above, we also have available to us the $42.5 million Term Loan conditional upon the approval of ACER-001 by FDA; provided, however, that if ACER-001 Approval does not occur on or before December 31, 2022, then the Term Loan will not be available unless the Company is able to obtain an extension for the time period beyond December 31, 2022, to the actual PDUFA target action date. The PDUFA target action date for the Company’s resubmitted New Drug Application (“NDA”) in respect of ACER-001 (sodium phenylbutyrate) for oral suspension for the treatment of patients with UCDs is January 15, 2023. We have no commitments for any additional financing, except for the agreement with Lincoln Park and the Marathon Credit Agreement for the Term Loan. Any amounts raised will be used for further development of our product candidates, precommercial activities, and for other working capital purposes.

On March 19, 2021, we entered into the Collaboration Agreement with Relief providing for the development and commercialization of ACER-001 for the treatment of various inborn errors of metabolism, including for the treatment of UCDs and MSUD. The Collaboration Agreement is the culmination of the option agreement (the “Option Agreement,” together the “Agreements”) previously entered into between us and Relief on January 25, 2021. Pursuant to the Agreements, we received from Relief an upfront non-refundable payment of $1.0 million and a reimbursement payment of $14.0 million. Under the terms of the Collaboration Agreement, Relief committed to pay us Development Payments (the “Development Payments”) of up to an additional $20.0 million for U.S. development and commercial launch costs for the UCDs and MSUD indications. During the three months ended June 30, 2021, we received from Relief the $10.0 million First Development Payment. We were contractually entitled to receive from Relief an additional $10.0 million Second Development Payment conditioned upon FDA’s acceptance of an NDA for ACER-001 in a UCD for filing and review. This acceptance was received on October 4, 2021. On October 6, 2021, we entered into a Waiver and Agreement with Relief to amend the timing for the Second Development Payment. We received the Second Development Payment in two $5.0 million tranches on each of October 12, 2021 and January 14, 2022. We could also receive a total of $6.0 million in milestone payments based on the first European marketing approvals of ACER-001 for a UCD and MSUD. There is no guarantee that ACER-001 will receive regulatory authority approval in any territory or become commercially available for the indications under investigation. The terms of the Agreements are further described in Critical Accounting Policies and Estimates later in this section and in the Revenue Recognition and Accounting for Collaboration Agreements section of Note 2 to our unaudited condensed financial statements.

If we are unable to obtain additional funding to support our current or proposed activities and operations, we may not be able to continue our operations as proposed, which may require us to suspend or terminate any ongoing development activities, modify our business plan, curtail various aspects of our operations, cease operations, or seek relief under applicable bankruptcy laws. In such event, our stockholders may lose a substantial portion or even all of their investment.

These factors individually and collectively raise substantial doubt about our ability to continue as a going concern for at least 12 months from the date these financial statements are available, or August 15, 2023. Our financial statements do not include any adjustments or classifications that may result from our possible inability to continue as a going concern.

Revenue

We have no products approved for commercial sale and have not generated any revenue from product sales. We do not expect to generate any revenue from product sales unless and until we obtain regulatory approval for and commercialize any of our product candidates.

Our revenues to date consist of activities in connection with a collaboration agreement, including a license of intellectual property. We expect that any revenue we generate will fluctuate from quarter to quarter as a result of the timing of contractually specified milestones, if at all, the timing and amount of payments relating to such milestones, as well as the extent to which any products are approved and successfully commercialized.

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If our product candidates are not developed in a timely manner, if regulatory approval is not obtained for them, or if such product candidates are not commercialized, our ability to generate future revenue, and our results of operations and financial position, would be adversely affected.

Activities Associated with Collaboration Agreements

From time to time, we will recognize as a reduction to research and development expenses and general and administrative expenses amounts attributed to providing services to our collaboration partner for which we have been reimbursed.

Research and Development Expenses

Research and development expenses consist of costs associated with the development of our product candidates. Our research and development expenses include:

• employee-related expenses, including salaries, benefits, and stock-based compensation

• external research and development expenses incurred under arrangements with third parties, such as contract research organizations (“CROs”), contract manufacturing organizations, consultants, and our scientific advisors

• license fees and other direct costs of acquiring intellectual property

We expense research and development costs as incurred. We account for nonrefundable advance payments for goods and services that will be used in future research and development activities as expenses when the service has been performed or when the goods have been received. From time to time, in connection with the Collaboration Agreement with Relief, we may recognize “contra-expense” for the research and development activities which were funded by the Collaboration Agreement. These contra-expense amounts are disclosed parenthetically on the face of the financial statements.

At any time, we are working on multiple programs. Our internal resources, employees, and infrastructure are not directly tied to any one research or drug discovery project and are typically deployed across multiple projects.

Since our inception in December 2013, we have spent a total of $78.0 million in research and development expenses through June 30, 2022. Of that amount, $35.2 million was directly related to EDSIVO^TM; $26.2 million was directly related to ACER-001, offset by $10.7 of collaboration funding; $9.2 million was directly related to ACER-801; $5.4 million was directly related to ACER-2820; and $2.0 million was related to other development activities.

We expect our research and development expenses to be substantial for the foreseeable future as we continue to conduct our ongoing regulatory activities, initiate new preclinical and clinical trials, and build upon our pipeline. The process of conducting clinical trials and preclinical studies necessary to obtain regulatory approval, preparing to seek regulatory approval, and preparing for commercialization in the event of regulatory approval, is costly and time-consuming. We may never succeed in achieving marketing approval for any of our product candidates.

Successful development of product candidates is highly uncertain and may not result in approved products. Completion dates and completion costs can vary significantly for each product candidate and are difficult to predict. We anticipate we will make determinations as to which programs to pursue and how much funding to direct to each program on an ongoing basis in response to our ability to enter into new strategic alliances with respect to each program or potential product candidate, the scientific and clinical success of each product candidate, the timing and ability to obtain regulatory approval for our product candidates (if any), and ongoing assessments as to each product candidate’s commercial potential. We will need to raise additional capital and may seek to do so through public or private equity or debt financings, government or other third-party funding, marketing and distribution arrangements and other collaborations, strategic alliances and licensing arrangements or a combination of these approaches. However, we may be unable to raise additional funds or enter into such other arrangements when needed on favorable terms or at all. Our failure to raise capital or enter into such other arrangements as and when needed would have a negative impact on our financial condition and our ability to develop our product candidates, pursue regulatory approvals, and operate our business as planned.

General and Administrative Expenses

General and administrative expenses consist primarily of employee-related expenses, including salaries, benefits, and stock-based compensation; external precommercial costs; and professional fees for legal, business consulting, auditing, and tax services. We expect that general and administrative expenses will be substantial in the future. From time to time, in connection with the Collaboration Agreement with Relief, we may recognize “contra-expense” for the general and administrative activities which were funded by the Collaboration Agreement. These contra-expense amounts are disclosed parenthetically on the face of the financial statements.

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Other Income (Expense), Net

Other income (expense), net consists primarily of changes in the value of liabilities measured at fair value, interest income and of gains and losses resulting from the revaluation of assets and liabilities denominated in foreign currencies. We earn interest income from interest-bearing accounts and money market funds, which we classify as cash and cash equivalents. We incur interest expense from loans and notes payable. We record as part of other income (expense), net, transaction gains and losses on foreign currency denominated assets and liabilities when they are revalued each period due to changes in underlying exchange rates. We also record gain on extinguishment of debt as part of other income (expense), net.

Critical Accounting Policies and Estimates

This management’s discussion and analysis of financial condition and results of operations is based on our unaudited condensed financial statements, which have been prepared in accordance with GAAP. The preparation of these unaudited condensed financial statements requires our management to make estimates and judgments that affect the reported amounts of assets, liabilities and expenses. On an ongoing basis, we evaluate these estimates and judgments. We base our estimates on historical experience and on various assumptions that we believe to be reasonable under the circumstances. These estimates and assumptions form the basis for making judgments about the carrying values of assets and liabilities and the recording of expenses that are not readily apparent from other sources. Actual results may differ materially from these estimates. We believe that the accounting policies discussed below are critical to understanding our historical and future performance, as these policies relate to the more significant areas involving our judgments and estimates. During the six months ended June 30, 2022, we have updated our critical accounting policies to include debt and convertible debt. Please refer to Part II, Item 7 “Management’s Discussion and Analysis of Financial Condition and Results of Operations” of our annual report on Form 10-K for the fiscal year ended December 31, 2021 for a discussion of our critical accounting policies and significant judgments and estimates.

Revenue Recognition and Accounting for Collaboration Agreements

Our revenues are generated from a single collaboration agreement which included the sale of a license of intellectual property. We analyze our collaboration agreements to assess whether they are within the scope of ASC Topic 808, Collaborative Arrangements (“ASC 808”) to determine whether such arrangements involve joint operating activities performed by parties that are both active participants in the activities and exposed to significant risks and rewards that are dependent on the commercial success of such activities. To the extent the arrangement is within the scope of ASC 808, we assess whether aspects of the arrangement between us and the collaboration partner are within the scope of other accounting literature. If we conclude that some or all aspects of the arrangement represent a transaction with a customer, we account for those aspects of the arrangement within the scope of ASC Topic 606, Revenue from Contracts with Customers (“ASC 606”). If we conclude that some or all aspects of the arrangement are within the scope of ASC 808 and do not represent a transaction with a customer, we recognize our share of the allocation of the shared costs incurred with respect to the jointly conducted activities as a component of the related expense in the period incurred. Pursuant to ASC 606, a customer is a party that has contracted with an entity to obtain goods or services that are an output of the entity’s ordinary activities in exchange for consideration. Under ASC 606, an entity 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. If we conclude a counterparty to a transaction is not a customer or otherwise not within the scope of ASC 606 or ASC 808, we consider the guidance in other accounting literature as applicable or by analogy to account for such transaction.

We determine the units of account within the Collaboration Agreement utilizing the guidance in ASC 606 to determine which promised goods or services are distinct. In order for a promised good or service to be considered “distinct” under ASC 606, 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 (i.e., the good or service is capable of being distinct), and the entity’s promise to transfer the good or service to the customer is separately identifiable from other promises in the contract (i.e., the promise to transfer the good or service is distinct within the context of the contract).

For any units of account that fall within the scope of ASC 606, where the other party is a customer, we evaluate the separate performance obligation(s) under each contract, determine the transaction price, allocate the transaction price to each performance obligation considering the estimated stand-alone selling prices of the services and recognize revenue upon the satisfaction of such obligations at a point in time or over time dependent on the satisfaction of one of the following criteria: (1) the customer simultaneously receives and consumes the economic benefits provided by the vendor’s performance; (2) the vendor creates or enhances an asset controlled by the customer; and (3) the vendor’s performance does not create an asset for which the vendor has an alternative use and the vendor has an enforceable right to payment for performance completed to date.

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Variable consideration is included in the transaction price only to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved.

Revenue for a sales-based or usage-based royalty promised in exchange for a license of intellectual property is recognized only when (or as) the later of the following events occurs: (i) the subsequent sale or usage occurs, or (ii) the performance obligation to which some or all of the sales-based or usage-based royalty has been allocated has been satisfied (or partially satisfied).

On January 25, 2021, we entered into the Option Agreement with Relief pursuant to which we granted Relief an exclusive option (the “Exclusivity Option”) to pursue a potential collaboration and license arrangement with us for the development, regulatory approval and commercialization of ACER-001 for the treatment of various inborn errors of metabolism, including UCDs and MSUD. The Option Agreement provided a period of time up to June 30, 2021 for the parties to perform additional due diligence and to work toward negotiation and execution of a definitive agreement with respect to the potential collaboration for ACER‑001. In consideration for the grant of the Exclusivity Option, (i) we received from Relief an upfront nonrefundable payment of $1.0 million, (ii) Relief provided to us a 12-month secured loan in the principal amount of $4.0 million, as evidenced by a Promissory Note (the “Note”) issued by Acer to Relief, and (iii) we granted to Relief a security interest in all of its assets to secure performance of the Note, as evidenced by a Security Agreement (the “Security Agreement”). The Note was repayable in one lump sum within 12 months from issuance and bore interest at a rate equal to 6% per annum. If a definitive agreement with respect to the potential collaboration had not been executed by the parties on or before June 30, 2021, the Exclusivity Option would have terminated and the Note would have been repayable by us upon maturity.

On March 19, 2021, we entered into the Collaboration Agreement with Relief providing for the development and commercialization of ACER-001 for the treatment of various inborn errors of metabolism, including for the treatment of UCDs and MSUD. We received a $10.0 million cash payment from Relief (consisting of a $14.0 million “Reimbursement Payment” from Relief to us offset by repayment of the $4.0 million outstanding balance of the Note, plus interest earned through the date of the Collaboration Agreement). Under the terms of the Collaboration Agreement, Relief committed to pay us up to an additional $20.0 million for U.S. development and commercial launch costs for the UCDs and MSUD indications. During the three months ended June 30, 2021, we received from Relief the $10.0 million First Development Payment. We were contractually entitled to receive from Relief an additional $10.0 million Second Development Payment conditioned upon FDA’s acceptance of an NDA for ACER-001 in a UCD for filing and review. This acceptance was received on October 4, 2021. On October 6, 2021, we entered into a Waiver and Agreement with Relief to amend the timing for the Second Development Payment. We received the Second Development Payment in two $5.0 million tranches on each of October 12, 2021 and January 14, 2022. Further, we retained development and commercialization rights in the U.S., Canada, Brazil, Turkey and Japan (“Acer Territory”). The companies will split net profits from the Acer Territory 60%:40% in favor of Relief. Relief licensed the rights for the rest of the world (“Relief Territory”,) where we will receive from Relief a 15% royalty on all net sales received in the Relief Territory. We could also receive a total of $6.0 million in milestone payments based on the first European (EU) marketing approvals of ACER-001 for a UCD and MSUD. There is no guarantee that ACER-001 will receive regulatory authority approval in any territory or become commercially available for the indications under investigation.

We assessed these agreements in accordance with the authoritative literature and concluded that they meet the definition of a collaborative arrangement per ASC 808. For certain parts of the Collaboration Agreement, we concluded that Relief represented a customer while for other parts of the Collaboration Agreement Relief did not represent a customer. The units of account of the Collaboration Agreement where Relief does not represent a customer are outside of the scope of ASC 606. We also determined that the development and commercialization services and Relief’s right to 60% profit in Acer Territory is within the scope of ASC 730, with regard to funded research and development arrangements.

We concluded the promised goods and services contained in the Collaboration Agreement represented two distinct units of account consisting of a license in Relief Territory, and a combined promise for the development and commercialization of ACER-001 in Acer Territory and the payment of 60% net profit from that territory (together, the “Services”). The stand-alone selling price was estimated for each distinct unit of account.

We determined that the transaction price at the outset of the Collaboration Agreement would amount to $25.0 million, including the Option Fee of $1.0 million, the Reimbursement Payment of $14.0 million, and the First Development Payment of $10.0 million. We concluded that, consistent with the evaluation of variable consideration, using the most likely amount approach, the Second Development Payment as well as the milestone payments for EU marketing approvals should be fully constrained until the contingency associated with each payment has been resolved and our NDA is accepted for review by FDA, and Relief receives EU marketing approval, respectively.

Since ASC 808 does not provide recognition and measurement guidance for collaborative arrangements, we applied the principles of ASC 606 for those units of account where Relief is a customer and ASC 730-20 for the funded research and development activities. The license revenue was recognized at the point where we determined control was transferred to the

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customer. The combined unit of account for the Services will be recognized over the service period through the anticipated date of first commercial sale of the ACER-001 approved product in the U.S. We also determined that the Services would be satisfied over time as measured using actual costs incurred by us toward the identified development and commercialization services agreed to between the parties up to the point of first commercial sale of the ACER-001 product. Research and development expenses and general and administrative expenses, as they relate to activities governed by the Collaboration Agreement, incurred in satisfying the Services unit-of-account will be recognized as contra-expense within their respective categories, consistent with the presentation guidance in ASC Topic 730, Research and Development (“ASC 730”).

We recognize as receivable under the Collaboration Agreement consideration, which is deemed unconditional, or when only the passage of time is required before payment of that consideration is due. Amounts receivable under the Collaboration Agreement plus payments received from Relief, net of the amount recorded as license revenue and as offsets to research and development expenses and to general and administrative expenses, are reported as deferred collaboration funding.

At June 30, 2022, the amount of deferred collaboration funding associated with unsatisfied promises under the Collaboration Agreement amounted to $14.2 million. We have recorded $6.3 million as a current liability, which equates to our estimate of remaining spending under the Collaboration Agreement which would occur within a 12-month period and prior to the date of the first commercial sale of ACER-001. The remaining balance of $7.9 million is recorded as a non-current liability and represents the estimated amount that would be taken against future net profit payments made to Relief should they occur. We expect to recognize this deferred collaboration funding as we incur expenses associated with performing the Services up to the date of first commercial sale in Acer Territory and through the end of the effective date of the Collaboration Agreement. At June 30, 2022, deferred collaboration funding was composed of $35.0 million received from Relief, offset by $1.3 million recognized as license revenue during the year ended December 31, 2021 and by $10.7 million recorded as an offset to research and development expenses and $8.8 million recorded as an offset to general and administrative expenses subsequent to signing the Collaboration Agreement and through the date of this report.

Goodwill

Goodwill represents the excess of the purchase price (consideration paid plus net liabilities assumed) of an acquired business over the fair value of the underlying net tangible and intangible assets. We evaluate the recoverability of goodwill according to ASC Topic 350, Intangibles – Goodwill and Other annually, or more frequently if events or changes in circumstances indicate that the carrying value of goodwill might be impaired. Factors that may be considered a change in circumstances indicating that the carrying value of our goodwill might be impaired include declines in our stock price, market capitalization, or cash flows. We may opt to perform a qualitative assessment or a quantitative impairment test to determine whether goodwill is impaired. Our goodwill is allocated to a single reporting unit. If we were to determine based on a qualitative assessment that it was more likely than not that the fair value of the reporting unit was less than its carrying value, a quantitative impairment test would then be performed. The quantitative impairment test compares the fair value of the reporting unit with its carrying amount, including goodwill. If the estimated fair value of the reporting unit is less than its carrying amount, a goodwill impairment would be recognized for the difference.

Stock-Based Compensation

We account for stock-based compensation expense related to stock options under our 2018 Stock Incentive Plan, our 2013 Stock Incentive Plan, as amended, and our 2010 Stock Incentive Plan, as amended and restated, by estimating the fair value of each stock option on the date of grant using the Black-Scholes model, which involves making the selection of inputs such as expected volatility of our stock, the anticipated term of the option, and a risk-free interest rate. The establishment of these inputs inherently requires judgment and estimates and can change from time to time depending on market factors and actual experience. We recognize stock-based compensation expense for stock options and restricted stock units on a straight-line basis over the vesting term.

Fair Value of Financial Instruments

ASC Topic 820, Fair Value Measurement (“ASC 820”), establishes a fair value hierarchy for instruments measured at fair value that distinguishes between assumptions based on market data (observable inputs) and our own assumptions (unobservable inputs). Observable inputs are inputs that market participants would use in pricing the asset or liability based on market data obtained from sources independent of us. Unobservable inputs are inputs that reflect 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.

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ASC 820 identifies fair value as the exchange price, or exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As a basis for considering market participant assumptions in fair value measurements, ASC 820 establishes a three-tier fair value hierarchy that distinguishes among the following.

•            Level 1—Valuations based on unadjusted quoted prices in active markets for identical assets or liabilities that we have the ability to access.

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

•            Level 3—Valuations based on inputs that are unobservable and significant to the overall fair value measurement.

To the extent that the 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 us 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.

Financial instruments consist of cash equivalents, collaboration receivable, accounts payable, accrued expenses, and debt instruments. These financial instruments are stated at their respective historical carrying amounts, which approximate fair value due to their short-term nature, except for cash equivalents and debt instruments, which were marked to market at the end of each reporting period. See Note 7 to our unaudited condensed financial statements for additional information on the fair value of the debt liabilities.

We elected the fair value option for both our Bridge Loan and our Secured Convertible Notes dated March 14, 2022 (see Note 7 to our unaudited condensed financial statements). We adjust both the Bridge Loan and the Secured Convertible Notes to fair value through the change in fair value of debt in the accompanying unaudited condensed statements of operations. Subsequent unrealized gains and losses on items for which the fair value option is elected are reported in earnings.

Debt

Convertible notes are regarded as compound instruments, consisting of a liability component and an equity component. We determined that we are eligible for the fair value option election in connection with the Bridge Loan and the Secured Convertible Notes as each instrument met the definition of a “recognized financial liability” which is an acceptable financial instrument eligible for the fair value option under ASC 825-10-15-4 and do not meet the definition of any of the financial instruments found within ASC 825-10-15-5 that are not eligible for the fair value option. At the date of issuance, the fair value for each instrument is derived from the instrument’s implied discount rate at inception.

Research and Development

Research and development costs are expensed as incurred and include compensation and related benefits, license fees and outside contracted research and manufacturing consultants. We sometimes make nonrefundable advance payments for goods and services that will be used in future research and development activities. These payments are capitalized and recorded as an expense in the period that we receive the goods or when the services are performed.

Clinical Trial and Preclinical Study Expenses

We make estimates of prepaid and/or accrued expenses as of each balance sheet date in our financial statements based on certain facts and circumstances at that time. Our accrued expenses for preclinical studies and clinical trials are based on estimates of costs incurred for services provided by CROs, manufacturing organizations, and for other trial- and study-related activities. Payments under our agreements with external service providers depend on a number of factors such as site initiation, patient screening, enrollment, delivery of reports, and other events. In accruing for these activities, we obtain information from various sources and estimate the level of effort or expense allocated to each period. Adjustments to our research and development expenses may be necessary in future periods as our estimates change. As these activities are generally material to our overall financial statements, subsequent changes in estimates may result in a material change in our accruals. No material changes in estimates were recognized in either of the three or six months ended June 30, 2022 or 2021. Our accounts payable and accrued expenses include costs associated with preclinical or clinical studies of $0.3 million and $0.2 million at June 30, 2022 and December 31, 2021, respectively.

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Results of Operations

Comparison of the three months ended June 30, 2022 and 2021

The following table summarizes our results of operations for the three months ended June 30, 2022 and 2021:

	Three Months Ended June 30,
	2022			2021			$ Change			% Change
Operating expenses:
Research and development (net of collaboration funding of $1,648,631 and $1,025,935 in the three months ended June 30, 2022 and 2021, respectively)	$	3,426,773		$	1,361,287		$	2,065,486			152	%
General and administrative (net of collaboration funding of $3,257,701 and $602,534 in the three months ended June 30, 2022 and 2021, respectively)		3,638,073			2,268,508			1,369,565			60	%
Loss from operations		(7,064,846	)		(3,629,795	)		(3,435,051	)		95	%
Total other income (expense), net		4,397,810			560,758			3,837,052			684	%
Net loss	$	(2,667,036	)	$	(3,069,037	)	$	402,001			(13	)%

Research and Development Expenses

Research and development expenses were $3.4 million, net of collaboration funding of $1.6 million, for the three months ended June 30, 2022, as compared to $1.4 million, net of collaboration funding of $1.0 million, for the three months ended June 30, 2021. This increase of $2.0 million was primarily due to increases in expenses for clinical studies. Research and development expenses for the three months ended June 30, 2022 were comprised of $2.1 million related to ACER-801; $1.8 million related to ACER-001, offset by $1.6 million of collaboration funding; $0.8 million related to EDSIVO^TM; and $0.3 million related to other development activities.

General and Administrative Expenses

General and administrative expenses were $3.6 million, net of collaboration funding of $3.3 million, for the three months ended June 30, 2022, as compared to $2.3 million, net of collaboration funding of $0.6 million, for the three months ended June 30, 2021. This increase of $1.3 million was primarily due to increases in precommercial expenses, audit and consulting fees, and employee-related expenses, partially offset by a decrease in the recognition of the collaboration funding from the Collaboration Agreement with Relief.

Other Income (Expense), Net

Other income (expense), net for the three months ended June 30, 2022 was primarily attributable to income from changes in the fair value of debt instruments, partially offset by costs of debt issuance. Other income (expense), net for the three months ended June 30, 2021 was primarily attributable to a gain on extinguishment of debt related to the forgiveness of the Payroll Protection Program (“PPP”) loan.

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Comparison of the six months ended June 30, 2022 and 2021

The following table summarizes our results of operations for the six months ended June 30, 2022 and 2021:

	Six Months Ended June 30,
	2022			2021			$ Change			% Change
Revenue	$	—		$	900,000		$	(900,000	)	N/A
Operating expenses:
Research and development (net of collaboration funding of $4,648,002 and $1,312,038 in the six months ended June 30, 2022 and 2021, respectively)		6,598,412			3,367,192			3,231,220			96	%
General and administrative (net of collaboration funding of $5,629,876 and $602,534 in the six months ended June 30, 2022 and 2021, respectively)		7,513,674			5,782,649			1,731,025			30	%
Loss from operations		(14,112,086	)		(8,249,841	)		(5,862,245	)		71	%
Total other income (expense), net		2,266,046			569,499			1,696,547			298	%
Net loss	$	(11,846,040	)	$	(7,680,342	)	$	(4,165,698	)		54	%

Revenue

We recognized revenue of $0.9 million during the six months ended June 30, 2021 related to the license of intellectual property as part of the Collaboration Agreement with Relief.

Research and Development Expenses

Research and development expenses were $6.6 million, net of collaboration funding of $4.6 million, for the six months ended June 30, 2022, as compared to $3.4 million, net of collaboration funding of $1.3 million, for the six months ended June 30, 2021. This increase of $3.2 million was primarily due to increases in clinical studies and other medical affairs expenses, employee-related expenses including a one-time bonus accrual, and contract manufacturing expenses, partially offset by a decrease in the recognition of the collaboration funding from the Collaboration Agreement with Relief. Research and development expenses for the six months ended June 30, 2022 were comprised of $4.9 million related to ACER-001, offset by $4.6 million of collaboration funding; $3.4 million related to ACER-801; $2.1 million related to EDSIVO^TM; $0.2 million related to ACER-2820, and $0.6 million related to other development activities.

General and Administrative Expenses

General and administrative expenses were $7.5 million, net of collaboration funding of $5.6 million, for the six months ended June 30, 2022, as compared to $5.8 million, net of collaboration funding of $0.6 million, for the six months ended June 30, 2021. This increase of $1.7 million was primarily due to increases in precommercial expenses, audit and consulting fees, and employee-related expenses including a one-time bonus accrual, partially offset by a decrease in the recognition of the collaboration funding from the Collaboration Agreement with Relief.

Other Income (Expense), Net

Other income (expense), net for the six months ended June 30, 2022 was primarily attributable to income from changes in the fair value of debt instruments, partially offset by costs of debt issuance. Other income, net for the six months ended June 30, 2021 was primarily attributable to a gain on extinguishment of debt related to forgiveness of the PPP loan.

Liquidity and Capital Resources

We have never been profitable and have incurred operating losses in each year since inception. From inception to June 30, 2022, we have raised net cash proceeds of $110.1 million, primarily from common stock offerings, private placements of convertible preferred stock, debt instruments, and convertible debt instruments. In addition, from inception to June 30, 2022, we have raised cash proceeds of $35.0 million from collaboration agreements. As of June 30, 2022, we had $14.5 million in cash and cash equivalents, and

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current liabilities aggregating to $17.5 million, which include $6.3 million associated with deferred collaboration funding. Our net loss for the three months ended June 30, 2022 and 2021 was $2.7 million and $3.1 million, respectively. As of June 30, 2022, we had an accumulated deficit of $126.4 million. Substantially all of our operating losses resulted from expenses incurred in connection with our research and development programs and from general and administrative costs associated with our operations.

The following table summarizes our cash flows for the six months ended June 30, 2022 and 2021:

	Six Months Ended June 30,
	2022			2021
Net cash (used in) provided by:
Operating activities	$	(12,866,087	)	$	9,242,939
Investing activities		(30,935	)		(15,222	)
Financing activities		14,656,004			7,139,047
Net increase in cash and cash equivalents	$	1,758,982		$	16,366,764

Operating Activities

Net cash used in operating activities was $12.9 million for the six months ended June 30, 2022, as compared to net cash provided by operating activities of $9.2 million for the six months ended June 30, 2021.The decrease of $22.1 million was primarily the result of a decrease in deferred collaboration funding, an increase in net loss, after adjusting for non-cash changes in the fair value of debt, and debt issuance costs, partially offset by a decrease in collaboration receivables and increases in accounts payable and accrued expenses. During the six months ended June 30, 2021, we recorded in other current assets a $9.4 million liability related to the securities class action and stockholder derivative actions settlements and legal costs, for which we also recorded in other current assets an asset of an equal amount representing the expected recovery from our insurance carriers. During the six months ended June 30, 2022, we reduced the remaining value of this liability and this asset each by $9.2 million.

Investing Activities

Net cash used in investing activities during each of the six months ended June 30, 2022 and 2021 was related to the purchase of property and equipment.

Financing Activities

Net cash provided by financing activities was $14.7 million for the six months ended June 30, 2022, as compared to $7.1 million for the six months ended June 30, 2021. Net cash provided by financing activities during the six months ended June 30, 2022 consisted primarily of $6.0 million net proceeds received from the Bridge Loan, $5.5 million net proceeds received from the Secured Convertible Notes, and $0.3 million received from the SWK Warrant, partially offset by issuance costs of $0.7 million related to these debt and convertible debt instruments, and proceeds from the issuance of common stock, net of issuance costs. Net cash provided by financing activities during the six months ended June 30, 2021 was primarily due to the $4.0 million received from the secured loan from Relief, which was settled net against the Reimbursement Payment received from Relief in connection with the Collaboration Agreement, as well as to proceeds from the issuance of common stock, net of issuance costs.

Future Capital Requirements

We have not generated any revenue from product sales. We do not expect to generate any revenue from product sales unless and until we obtain regulatory approval for and commercialize any of our product candidates. At the same time, we expect to continue to incur significant expenses in connection with our ongoing development and manufacturing activities, particularly as we continue the research, development, manufacture and clinical trials of, and seek regulatory approval for, our product candidates. In addition, subject to obtaining regulatory approval of any of our product candidates and thereafter successfully commercializing any such product candidates, we anticipate that we will need substantial additional funding in connection with our continuing operations.

As of June 30, 2022, we had $14.5 million in cash and cash equivalents and had current liabilities of $17.5 million, which include $6.3 million associated with deferred collaboration funding. We believe that our cash and cash equivalents available at June 30, 2022 will be sufficient to fund our currently anticipated operating and capital requirements through the third quarter of 2022. There is substantial doubt about our ability to continue as a going concern. Please refer to the discussion above titled “Going Concern”.

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On March 19, 2021, we entered into the Collaboration Agreement with Relief providing for the development and commercialization of ACER-001 for the treatment of various inborn errors of metabolism, including for the treatment of UCDs and MSUD. We received a $10.0 million cash payment from Relief ($14.0 million “Reimbursement Payment” from Relief to us offset by repayment of the $4.0 million outstanding balance of the Note, plus interest earned through the date of the Collaboration Agreement). Under the terms of the Collaboration Agreement, Relief committed to pay us up to an additional $20.0 million for U.S. development and commercial launch costs for the UCDs and MSUD indications. During the three months ended June 30, 2021, we received from Relief the $10.0 million First Development Payment. We were contractually entitled to receive from Relief an additional $10.0 million Second Development Payment conditioned upon FDA’s acceptance of an NDA for ACER-001 in a UCD for filing and review. This acceptance was received on October 4, 2021. On October 6, 2021, we entered into a Waiver and Agreement with Relief to amend the timing for the Second Development Payment. We received the Second Development Payment in two $5.0 million tranches on each of October 12, 2021 and January 14, 2022. Further, we retained development and commercialization rights in the U.S., Canada, Brazil, Turkey and Japan (“Acer Territory”). The companies will split net profits from the Acer Territory 60%:40% in favor of Relief. Relief licensed the rights for the rest of the world (“Relief Territory”), where we will receive from Relief a 15% royalty on all net sales received in the Relief Territory. There is no guarantee that ACER-001 will receive regulatory authority approval in any territory or become commercially available for the indications under investigation. We could also receive a total of $6.0 million in milestone payments based on the first European marketing approvals of ACER-001 for a UCD and MSUD. In connection with the cancellation of the $4.0 million promissory note executed by us in favor of Relief on January 25, 2021, Relief released its security interest in all of our assets pursuant to the Promissory Note. 

On April 30, 2020, we entered into a $15.0 million equity line purchase agreement and registration rights agreement with Lincoln Park pursuant to which we have the right to sell to Lincoln Park an aggregate of up to $15.0 million in shares of our common stock, subject to certain conditions and limitations. Under the terms and subject to the conditions of the purchase agreement, Lincoln Park is obligated to purchase up to an aggregate of $15.0 million in shares of common stock (subject to certain limitations) from time to time over a 36-month period commencing on June 8, 2020, with $11.8 million obligation remaining as of June 30, 2022. We may direct Lincoln Park, at our sole discretion and subject to certain conditions, to purchase up to 50,000 shares of common stock in regular purchases, increasing to amounts of up to 100,000 shares depending upon the closing sale price of our common stock. In addition, we may direct Lincoln Park to purchase additional amounts as accelerated purchases or as additional accelerated purchases. The purchase price of shares of common stock related to this future funding will be based upon the market price of our common stock preceding the time of sale as computed under purchase agreement. However, there can be no assurance that we will be able to receive the entire obligation amount from Lincoln Park because the purchase agreement contains limitations, restrictions, requirements, events of default and other provisions that could limit our ability to cause Lincoln Park to buy common stock from us. During the three and six months ended June 30, 2022, we sold 300,000 shares of common stock under our purchase agreement with Lincoln Park at a weighted average gross sale price of $1.25 per share, resulting in proceeds of $0.4 million. Subsequent to signing the purchase agreement and through the date of this report, we have sold an aggregate of 1,400,000 shares of common stock under the purchase agreement for net proceeds of $3.2 million.

On March 18, 2020, we entered into an amended and restated sales agreement with JonesTrading and Roth Capital. This agreement provides a facility for the offer and sale of shares of common stock from time to time depending upon market demand, in transactions deemed to be an “at-the-market” (“ATM”) offering. We will need to keep current our shelf registration statement and the offering prospectus relating to the ATM facility, in addition to providing certain periodic deliverables under the sales agreement, in order to use such facility. Due to the SEC’s “baby shelf rules,” which prohibit companies with a public float of less than $75 million from issuing securities under a shelf registration statement in excess of one-third of such company’s public float in a 12-month period, we are currently only able to issue a limited number of shares which aggregate no more than one-third of our public float using our shelf registration statement. From May 19, 2020 through December 31, 2021, we sold an aggregate of 1,838,957 shares of common stock at an average gross sale price of $3.9228 per share, for gross proceeds of $7.2 million. Proceeds, net of $0.3 million of fees and offering costs were $6.9 million. During the three and six months ended June 30, 2022, we sold 1,062,547 shares of common stock through the ATM facility at a gross sale price of $3.0719 per share, for gross proceeds of $3.3 million. Proceeds, net of $0.2 million of fees and offering costs, were $3.1 million. We have no commitments for any additional financing, except for the agreement with Lincoln Park and the Marathon Credit Agreement for the Term Loan.

Our future capital requirements are difficult to forecast and will depend on many factors, including but not limited to:

• any continued development and potential commercialization of ACER-001 beyond the third quarter of 2022

• any continued development, including the initiation or continuation of one or more clinical trials for ACER-801

• any continued development, including the DiSCOVER pivotal Phase 3 clinical trial for EDSIVO^TM

• our ability to obtain adequate levels of financing to meet our operating plan

• the costs associated with filing, outcome, and timing of regulatory approvals

• the terms and timing of any strategic alliance, licensing and other arrangements that we may establish

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• the cost and timing of hiring any new employees to support our business operations

• the costs and timing of having clinical supplies of our product candidates manufactured

• the initiation and progress of ongoing preclinical studies and clinical trials for our product candidates

• the costs involved in patent filing, prosecution, and enforcement

• the number of programs we pursue

• any development of ACER-2820 we may choose to pursue (although any such development will depend upon the availability of non-dilutive financing)

We will continue to require substantial additional capital to continue our clinical development and pursuit of regulatory approval activities. Accordingly, we will need to raise substantial additional capital to continue to fund our operations. The amount and timing of our future funding requirements will depend on many factors, including the pace and results of our development, regulatory conditions and requirements, and commercialization efforts. Failure to raise capital as and when needed, on favorable terms or at all, would have a negative impact on our financial condition and our ability to develop our product candidates, pursue regulatory approvals, potentially commercialize (if approved) our product candidates, and operate our business as planned.

We expect to incur significant expenses and operating losses for at least the foreseeable future as we initiate and continue the clinical development of, seek regulatory approval for, and potentially commercialize (if approved) our product candidates. In addition, operating as a publicly-traded company involves upgrading financial information systems and incurring costs associated with operating as a public company. We expect that our operating losses will fluctuate significantly from quarter-to-quarter and year-to-year due to the timing of clinical development programs, efforts to achieve regulatory approval, and planning for potential commercialization (if approved) of our product candidates.

Until we can generate a sufficient amount of product sales revenue to finance our cash requirements, which would require us to obtain regulatory approval for and successfully commercialize one or more of our product candidates, we expect to finance our future cash needs primarily through the issuance of additional equity or debt securities, non-dilutive funding, and/or through strategic collaborations.

We continue to explore potential opportunities and alternatives to obtain the additional resources that will be necessary to support our ongoing operations beyond the third quarter of 2022, including raising additional capital through either private or public equity or debt financing, or additional program collaborations or non-dilutive funding, as well as using our ATM facility and/or our equity line facility. To the extent that we raise additional capital through the issuance of additional equity or convertible debt securities, the ownership interest of our stockholders will be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect the rights of existing stockholders. Debt financing, if available, may involve agreements that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends. If we raise additional funds through marketing and distribution arrangements or other collaborations, strategic alliances or licensing arrangements with third parties, we may have to relinquish valuable rights to our technologies, future revenue streams, research programs or product candidates or grant licenses on terms that may not be favorable to us.

If we are unable to raise additional funds through public or private equity or debt financings or other sources, such as non-dilutive funding or strategic collaborations, when needed, we may be required to delay, limit, reduce or terminate our product development or pursuit of regulatory approval efforts or provide rights to develop and market product candidates to third parties that we would otherwise prefer to develop and, if applicable, market ourselves. Further, if we are unable to obtain additional funding to support our current or proposed activities and operations, we may not be able to continue our operations as currently anticipated, which may require us to suspend or terminate any ongoing development activities, modify our business plan, curtail various aspects of our operations, cease operations, or seek relief under applicable bankruptcy laws. In such event, our stockholders may lose a substantial portion or even all of their investment.

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Contractual Commitments

License Agreements

In April 2014, we obtained exclusive rights to patents and certain other intellectual property relating to ACER-001 for the treatment of inborn errors of branched-chain amino acid metabolism, including MSUD, and preclinical and clinical data, through an exclusive license agreement with Baylor College of Medicine (“BCM”). Under the terms of the agreement, as amended, we have worldwide exclusive rights to develop, manufacture, use, sell and import products incorporating the licensed intellectual property. The license agreement requires us to make upfront and annual payments to BCM, reimburse certain of BCM’s legal costs, make payments upon achievement of defined milestones, and pay low single-digit percent royalties on net sales of any developed product over the royalty term.

In June 2016, we entered into an agreement with Aventis Pharma SA (now Sanofi) granting us the exclusive access and exclusive right to use the data included in the marketing authorization application dossier filed with and approved by the MHRA in 1986 for the treatment of mild to moderate hypertension pursuant to the UK regulatory approval procedure, for the sole purpose of allowing us to further develop, manufacture, register and commercialize celiprolol in the U.S. and Brazil for the treatment of EDS, Marfan syndrome and Loeys-Dietz syndrome. We have paid in full for the exclusive access and right to use the data. Subsequently we amended our agreement with Sanofi to provide the same rights to data access and use for potential marketing approval in all of North and South America.

In August 2016, we entered into an agreement with AP-HP granting us the exclusive worldwide rights to access and use data from a multicenter, prospective, randomized, open trial related to the use of celiprolol for the treatment of vEDS. We utilized this clinical data to support an NDA filing for EDSIVO^TM for the treatment of vEDS. The agreement requires us to make certain upfront payments to AP-HP, reimburse certain of AP-HP’s costs, make payments upon achievement of defined milestones and pay low single-digit percent royalties on net sales of celiprolol over the royalty term.

In September 2018, we entered into an additional agreement with AP-HP to acquire the exclusive worldwide intellectual property rights to three European patent applications relating to certain uses of celiprolol including (i) the optimal dose of celiprolol in treating vascular Ehlers-Danlos syndrome (“vEDS”) patients, (ii) the use of celiprolol during pregnancy, and (iii) the use of celiprolol to treat kyphoscoliotic Ehlers-Danlos syndrome (type VI). Pursuant to the agreement, we will reimburse AP-HP for certain costs and will pay annual maintenance fee payments. Subject to a minimum royalty amount, we will also pay royalty payments on annual net sales of celiprolol during the royalty term in the low single digit percent range, depending upon whether there is a valid claim of a licensed patent. Under the agreement, we will control and pay the costs of ongoing patent prosecution and maintenance for the licensed applications. We subsequently filed three U.S. patent applications on this subject matter in October 2018. We may choose to limit our pursuit of patent applications to specific territories, in which case AP-HP would have the right to revise our territorial license rights accordingly.

In December 2018, we entered into an exclusive license agreement with Sanofi granting us worldwide rights to ACER-801, a clinical-stage, selective, non-peptide tachykinin NK3 receptor antagonist. The agreement requires us to make certain upfront payments to Sanofi, make payments upon achievement of defined development and sales milestones and pay royalties on net sales of ACER-801 over the royalty term. We plan to initially pursue development of ACER-801 as a potential treatment for iVMS.

Collaboration Agreement

On March 19, 2021, we entered into the Collaboration Agreement with Relief providing for the development and commercialization of ACER-001 for the treatment of various inborn errors of metabolism, including for the treatment of UCDs and MSUD. The Collaboration Agreement is the culmination of the Option Agreement previously entered into between us and Relief on January 25, 2021, which provided Relief with an exclusive period of time up to June 30, 2021 for the parties to enter into a mutually acceptable definitive agreement with respect to the potential collaboration and license arrangements. In consideration for the grant of the exclusivity option, (i) we received from Relief an upfront non-refundable payment of $1.0 million, (ii) Relief provided to us a 12-month secured loan in the principal amount of $4.0 million with interest at a rate equal to 6% per annum, as evidenced by a promissory note we issued to Relief, and (iii) we granted Relief a security interest in all of our assets to secure performance of the promissory note, as evidenced by a security agreement. Upon signing the Collaboration Agreement, we received a $10.0 million cash payment from Relief (consisting of a $14.0 million “Reimbursement Payment” from Relief to us offset by repayment of the $4.0 million outstanding balance of the prior loan, plus interest). Under the terms of the Collaboration Agreement, Relief committed to pay us Development Payments of up to an additional $20.0 million for U.S. development and commercial launch costs for the UCDs and MSUD indications. During the three months ended June 30, 2021, we received from Relief the $10.0 million First Development Payment. We were contractually entitled to receive from Relief an additional $10.0 million Second Development Payment conditioned upon FDA’s acceptance of an NDA for ACER-001 in a UCD for filing and review. This acceptance was received on October 4, 2021. On October 6, 2021, we entered into a Waiver and Agreement with Relief to amend the timing for the Second Development Payment. We received the Second Development Payment in two $5.0 million tranches on each of October 12,

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2021 and January 14, 2021. Further, we retained development and commercialization rights in the U.S., Canada, Brazil, Turkey and Japan (“Acer Territory”). The companies will split net profits from the Acer Territory 60%:40% in favor of Relief. Relief licensed the rights for the rest of the world (“Relief Territory”), where we will receive from Relief a 15% royalty on all net sales received in the Relief Territory. We could also receive a total of $6.0 million in milestone payments based on the first European marketing approvals of ACER-001 for a UCD and MSUD. There is no guarantee that ACER-001 will receive regulatory authority approval in any territory or become commercially available for the indications under investigation. In connection with cancellation of the $4.0 million promissory note executed by us in favor of Relief on January 25, 2021, Relief released its security interest in all of our assets pursuant to the Promissory Note.

Item 3. Quantitative and Qualitative Disclosures About Market Risk.

Not applicable.

Item 4. Controls and Procedures. (As Restated)

Evaluation of Disclosure Controls and Procedures (As Restated)

We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed by us in the reports that we file or submit to the SEC under the Securities Exchange Act of 1934, as amended, is recorded, processed, summarized, and reported within the time periods specified by the SEC’s rules and forms, and that information is accumulated and communicated to our management, including our Principal Executive Officer and Principal Financial Officer (whom we refer to in this periodic report as our Certifying Officers), as appropriate to allow timely decisions regarding required disclosure. In designing and evaluating our disclosure controls and procedures, our management recognizes that disclosure controls and procedures, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the disclosure controls and procedures are met. Our disclosure controls and procedures have been designed to meet reasonable assurance standards. In addition, the design of disclosure controls and procedures must reflect the fact that there are resource constraints that require our management to apply its judgment in evaluating the benefits of possible controls and procedures relative to their costs. The design of any disclosure controls and procedures also is based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions.

Our management evaluated, with the participation of our Certifying Officers, the effectiveness of our disclosure controls and procedures as of June 30, 2022, pursuant to Rule 13a-15(b) under the Securities Exchange Act. Based upon that evaluation, our Certifying Officers concluded that, as of June 30, 2022, our disclosure controls and procedures were not effective as a result of a material weakness in our internal control over financial reporting related to the allocation of transaction price related to the collaboration and license agreement (the “Collaboration Agreement”) between us and Relief Therapeutics Holding AG, which was entered into on March 19, 2021, and the associated estimate of stand-alone selling price of each of the units of account identified in the Collaboration Agreement. Refer to the section titled “Restatement of Previously Issued Financial Statements” in Part I, Item 1, Note 1, “Nature of Operations and Basis of Presentation” to the unaudited condensed interim financial statements included in our Forms 10-Q/A for the periods ended March 31, 2021 and June 30, 2021. Additionally, management determined that a restatement of certain items presented in our original Form 10-Q for the period ended June 30, 2022, was required as a result of a material weakness in our internal control over financial reporting related to the application of certain interpretive accounting guidance related to ASC 260, Earnings Per Share. Specifically, when the fair value of a contract is reported as an asset or liability for accounting purposes and changes in the fair value are recorded through earnings, such as the Secured Convertible Notes, the calculation of diluted earnings per share using the “if-converted” method may require an adjustment to the numerator for any changes in income or loss that would result if the contract had been reported as an equity instrument for accounting purposes during the period, and in doing so the result is dilutive to the net loss per share calculation. Refer to the EXPLANATORY NOTE included at the beginning of this Form 10-Q/A and Note 10 “Net Loss Per Share” to the Unaudited Condensed Financial Statements included in this Form 10-Q/A for the period ended June 30, 2022.

Material Weaknesses in Internal Control over Financial Reporting (As Restated)

A material weakness is defined as a deficiency or combination of deficiencies in internal control over financial reporting such that there is a reasonable possibility that a material misstatement of annual or interim financial statements will not be prevented or detected on a timely basis.

With respect to the accounting for certain complex and nonrecurring transactions, our internal controls were not designed to include all necessary reviews of certain assumptions, estimates, and computations made in establishing a reasonable method for allocation of transaction price across all units of account identified in the Collaboration Agreement.

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The matter was discovered during the course of the external review of the accounting for the Collaboration Agreement and was reviewed with our Audit Committee. This material weakness resulted in the restatement described in Part I, Item 1, Note 1, "Nature of Operations and Basis of Presentation, Restatement of Previously Issued Financial Statements," to the unaudited condensed interim financial statements included in our Forms 10-Q/A for the periods ended March 31, 2021 and June 30, 2021.

We identified an additional material weakness related to control over financial reporting, and specifically the application of ASC 260, Earnings Per Share. This matter was discovered during the course of the external review of the accounting for earnings per share and was reviewed with our Audit Committee. This material weakness resulted in the restatement described in the EXPLANATORY NOTE included at the beginning of this Form 10-Q/A and in Part I, Item 1, Note 1 “Nature of Operations and Basis of Presentation, Restatement of Previously Issued Financial Statements” to the unaudited condensed interim financial statements included in this Form 10-Q/A for the period ended June 30, 2022.The Company has clarified its internal documentation and revised its accounting position to appropriately consider the impact of such a diluted calculation related to an instrument recorded as an asset or liability at fair value with changes in fair value recorded through earnings.

As a result of the identified material weaknesses, our management directed a comprehensive review of the complex nonrecurring Relief collaboration transaction to assess the possibility of further material misstatements that may remain unidentified, as well as a comprehensive review of its accounting policy and procedures for calculating earnings per share.

As a result of such review, and notwithstanding the material weaknesses described above, our management, including our Certifying Officers, believe that the unaudited condensed interim financial statements contained in this Form 10-Q as of and for the three and six months ended June 30, 2022, fairly present, in all material respects, our financial condition, results of operations and cash flows for the periods presented in conformity with U.S. GAAP.

Remediation Process (As Restated)

We are implementing a plan of remediation to strengthen the effectiveness of the design and operation of our internal control environment. The remediation plan includes the following actions:

• Enhancing the design of our review procedures with respect to accounting for any new complex transactions such as this collaboration and license agreement, as well as the periodic evaluation of ongoing activities associated with any collaboration and license agreements and the related accounting and disclosure

• Implementing additional review procedures with respect to accounting under ASC 808 and ASC 606 to ensure our accounting will continue to be in accordance with that guidance on an ongoing basis

• Implementing additional identification, accounting, and review controls with respect to complex and nonrecurring transactions, as well as augmenting existing staff with internal and external skilled accounting resources, as appropriate, and strengthening the review process

In addition, we implemented additional review procedures around the accounting for debt, convertible debt, and warrants in connection with the transactions recorded in the six months ended June 30, 2022.

We have implemented a comprehensive review of our accounting policy and procedure to clarify the application of the “if converted” method and its impact on convertible instruments recorded as assets or liabilities which are measured at fair value with changes in fair value recognized in earnings. Additionally, we will separate the controls over the calculation and presentation of earnings per share into a separate set of control activities to ensure the appropriate level of accuracy and precision is applied to every potential common share appropriately.

The actions that we are taking are subject to ongoing senior management review as well as Audit Committee oversight. We are committed to maintaining a strong internal control environment and believe that these remediation efforts will represent significant improvements to the internal controls around complex nonrecurring transactions. We have started to implement these steps; however, some of these steps will take time to be fully integrated and assessed as being designed and operating effectively. Additional controls may also be required over time. Until the remediation steps set forth above are fully implemented and tested, the material weakness described above will continue to exist.

Changes in Internal Control over Financial Reporting (As Restated)

As discussed above, we are implementing a plan to remediate the previously identified material weaknesses in our internal control over financial accounting to strengthen the effectiveness of the design and operation of our control environment. Other than implementing such remediation plan and the above referenced additional review procedures we are implementing around the recent debt, convertible debt, and warrant transactions, and additionally earnings per share related to the “if-converted” method, there have

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been no changes in our internal control over financial reporting during the second quarter of 2022 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.

From time to time, we may be involved in various claims and legal proceedings relating to claims arising out of our operations.

See Note 8 to our unaudited condensed financial statements included in this report for a description of a putative securities class action and stockholder derivative suit complaints filed against us, all of which have now been dismissed.

Item 1A. Risk Factors.

Investing in our securities involves a high degree of risk. You should consider the following risk factors, as well as other information contained or incorporated by reference in this report, before deciding to invest in our securities. The following factors affect our business, our intellectual property, the industry in which we operate and our securities. The risks and uncertainties described below are not the only ones we face. Additional risks and uncertainties not presently known or which we consider immaterial as of the date hereof may also have an adverse effect on our business. If any of the matters discussed in the following risk factors were to occur, our business, financial condition, results of operations, cash flows or prospects could be materially adversely affected, the market price of our securities could decline and you could lose all or part of your investment in our securities.

Risks Related to Our Business and Financial Condition

We will require additional financing to complete development and seek to obtain marketing approval of our product candidates and, if approved, to commercialize our product candidates, and a failure to obtain this necessary capital when needed on acceptable terms, or at all, could force us to delay, limit, reduce or terminate our product development, other operations or commercialization efforts.

Since our inception, substantially all of our resources have been dedicated to the clinical development of our product candidates. As of June 30, 2022, we had an accumulated deficit of $126.4 million, cash and cash equivalents of $14.5 million, and current liabilities of $17.5 million, which include $6.3 million associated with deferred collaboration funding. As discussed above, we believe that our cash and cash equivalents available at June 30, 2022 will be sufficient to fund our anticipated operating and capital requirements through the third quarter of 2022. There is no guarantee that ACER-001 will receive regulatory authority approval in any territory or become commercially available for the indications under investigation.

We will need to raise additional capital in order to finance the completion of clinical development and regulatory preparedness of our product candidates, preparations for a commercial launch of our product candidates, if approved, and development of any other current or future product candidates we may choose to further develop. These expenditures will include costs associated with research and development, conducting preclinical studies and clinical trials, obtaining marketing approvals, and manufacturing and supply as well as marketing and selling any products approved for sale. In addition, other unanticipated costs may arise. Because the outcome of any drug development process is highly uncertain, we cannot reasonably estimate the actual amounts necessary to successfully complete the development and commercialization of our current product candidates, if approved, or future product candidates, if any.

Our operating plan may change as a result of factors currently unknown to us, and we may need to seek substantial additional funds sooner than planned, through public or private equity or debt financings or other sources, such as non-dilutive funding or strategic collaborations. Such financing may result in dilution to stockholders, imposition of debt covenants and repayment obligations, or other restrictions that may adversely affect our business.

Our results of operations could be adversely affected by general conditions in the global economy and in the global financial markets, which recently have been extremely challenging. For example, the volatility associated with the ongoing COVID-19 pandemic, the global supply chain issues and Russia’s invasion of Ukraine has caused significant instability and disruptions in the capital and credit markets, which may continue to be adversely affected by the possibility of a wider European or global conflict and global sanctions imposed in response to Russia’s invasion. The continued increase in inflation has exacerbated negative economic and financial conditions. A severe or prolonged economic downturn, such as a global financial crisis, could result in a variety of risks to our business, including our ability to raise additional capital when needed on acceptable terms, if at all. We cannot anticipate all of the ways in which the foregoing, and the current economic climate and financial market conditions generally, could adversely impact our business.

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Our future capital requirements depend on many factors, including:

• the scope, progress, results, and costs of researching and developing our current product candidates and future product candidates, if any, including conducting preclinical and clinical trials

• the cost of seeking regulatory and marketing approvals and reimbursement for our product candidates and future product candidates, if any

• the cost of commercialization activities if our current product candidates and future product candidates, if any, are approved for sale, including marketing, sales and distribution costs, and preparedness of our corporate infrastructure

• the cost of manufacturing current product candidates and future product candidates, if any, that we obtain approval for and successfully commercialize

• the timing, receipt, and amount of payments we may receive from Relief under the Collaboration Agreement

• our ability to establish and maintain strategic collaborations, licensing or other arrangements and the financial terms of such agreements

• the number and characteristics of any additional product candidates we may develop or acquire

• any product liability or other lawsuits related to our product candidates or commenced against us

• the expenses needed to attract and retain skilled personnel

• the costs associated with being a public company

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

• the timing, receipt and amount of sales of, or royalties on, future approved product candidates, if any

• the amount of our market capitalization as reflected from time to time in the open market

Additional funds may not be available when we need them, on terms that are acceptable to us, or at all. If adequate funds are not available to us on a timely basis, we may be required to:

• delay, limit, reduce or terminate preclinical studies, clinical trials or other development activities for our current product candidates or future product candidates, if any

• delay, limit, reduce or terminate our research and development activities

• delay, limit, reduce or terminate our establishment of sales and marketing capabilities or other activities that may be necessary to commercialize future approved product candidates, if any

Substantial doubt exists as to our ability to continue as a going concern.

As of June 30, 2022, we had an accumulated deficit of $126.4 million, cash and cash equivalents of $14.5 million, and current liabilities of $17.5 million, which include $6.3 million associated with deferred collaboration funding. We believe that our cash and cash equivalents available at June 30, 2022 will be sufficient to fund our currently anticipated operating and capital requirements through the third quarter of 2022. There is no guarantee that ACER-001 will receive regulatory authority approval in any territory or become commercially available for the indications under investigation. We will continue to require substantial capital to continue our clinical development and pursuit of regulatory approval activities. Accordingly, we will need to raise substantial additional capital to continue to fund our operations. Moreover, we have not established a source of product sales and we expect to continue to incur losses for the foreseeable future as we continue our development of, and seek marketing approvals for, our product candidates. These factors individually and collectively raise substantial doubt about our ability to continue as a going concern and therefore it may be more difficult for us to attract investors. Unless we are able to raise additional capital to finance our operations, our long-term business plan may not be accomplished, and we may be forced to cease, reduce, or delay operations, including reduction of employees recently hired in order to prepare for possible launch and marketing of ACER-001.

Our efforts to raise additional funds could be affected by negative conditions in the capital markets generally, which in recent months have been especially challenging, and there are numerous companies in the pharmaceutical and biotech sectors who are seeking additional capital from many of the same sources, which may also limit the amount of capital, if any, available to us.

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We entered into the Collaboration Agreement with Relief which allows them to control the development and commercialization of ACER-001 in UCDs and MSUD in territories other than the U.S., Canada, Brazil, Turkey and Japan, which may impact our ability to generate revenues and achieve or sustain profitability. In addition, we are required to provide assistance to Relief in the performance of their contractual obligations, which may distract us from achieving our objectives.

On March 19, 2021, we entered into the Collaboration Agreement with Relief providing for the development and commercialization of ACER-001 for the treatment of various inborn errors of metabolism, including for the treatment of UCDs and MSUD. The Collaboration Agreement is the culmination of the Option Agreement previously entered into between Acer and Relief on January 25, 2021 which provided Relief with an exclusive period of time up to June 30, 2021 for the parties to enter into a mutually acceptable definitive agreement with respect to the potential collaboration and license arrangements in return for a $1.0 million exclusivity fee. Upon signing the Collaboration Agreement, we received a $10.0 million cash payment from Relief (consisting of a $14.0 million “Reimbursement Payment” from Relief to us offset by repayment of the $4.0 million outstanding balance of the prior loan, plus interest). Under the terms of the Collaboration Agreement, Relief committed to pay us up to an additional $20.0 million for U.S. development and commercial launch costs for the UCDs and MSUD indications. During the three months ended June 30, 2021, we received from Relief the $10.0 million First Development Payment. We were contractually entitled to receive from Relief an additional $10.0 million Second Development Payment conditioned upon FDA’s acceptance of an NDA for ACER-001 in a UCD for filing and review. This acceptance was received on October 4, 2021. On October 6, 2021, we entered into a Waiver and Agreement with Relief to amend the timing for the Second Development Payment. We received the Second Development Payment in two $5.0 million tranches on each of October 12, 2021 and January 14, 2022. Further, we retained development and commercialization rights in the U.S., Canada, Brazil, Turkey and Japan (“Acer Territory”). The companies will split net profits from the Acer Territory 60%:40% in favor of Relief. Relief licensed the rights for the rest of the world (“Relief Territory”), where we will receive from Relief a 15% royalty on all net sales received in the Relief Territory. We could also receive a total of $6.0 million in milestone payments based on the first European (“EU”) marketing approvals of ACER-001 for a UCD and MSUD. There is no guarantee that ACER-001 will receive regulatory authority approval in any territory or become commercially available for the indications under investigation.

The rights we have relinquished to our product candidate ACER-001 in the applicable territories, including development and commercialization rights, may impact our ability to generate revenues and achieve or sustain profitability. We are reliant on Relief’s resources and efforts with respect to ACER-001 in UCDs and MSUD in their applicable territories, including the pace at which Relief moves forward with development and commercialization. Relief may fail to develop or successfully commercialize ACER-001 for a variety of reasons, including that Relief:

• does not have sufficient resources or decides not to devote the necessary resources due to internal constraints such as limited cash or human resources

• decides to pursue a competitive potential product

• cannot obtain the necessary regulatory approvals

• determines that the market opportunity is not attractive, or

• cannot manufacture or obtain the necessary materials in sufficient quantities from multiple sources or at a reasonable cost

In addition, we are required by our agreements with Relief to provide certain assistance in the performance of their obligations. Doing so may cause us to delay or defer achievement of our own objectives regarding ACER-001 or our other programs.

If Relief does not pursue development and successfully commercialize ACER-001 in the applicable territories, our ability to generate revenues and achieve or sustain profitability could be significantly hindered and may have a material adverse impact on our financial condition and results of operations.

We have identified material weaknesses in our internal control over financial reporting that resulted in a restatement of our unaudited condensed interim financial statements for the three months ended March 31, 2021 and June 30, 2021, and another restatement of our unaudited condensed interim financial statements for the three and six months ended June 30, 2022. These material weaknesses, if not remediated, could again adversely affect our ability to report our results of operations and financial condition accurately and in a timely manner.

Our management is responsible for establishing and maintaining adequate internal control over financial reporting designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of our financial statements for external purposes in accordance with GAAP. Our management is likewise required, on a quarterly basis, to evaluate the effectiveness of our internal controls and to disclose any changes and material weaknesses identified through such evaluation in those internal controls. A material weakness is a deficiency, or a combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of our annual or interim financial statements will not be prevented or detected on a timely basis.

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As described elsewhere in this report, we identified a material weakness in our internal control over financial reporting related to the accounting and reporting for the Collaboration Agreement entered into with Relief. As a result of this material weakness, our management concluded that our internal control over financial reporting was not effective as of March 31, 2021, June 30, 2021, September 30, 2021, December 31, 2021, March 31, 2022, and June 30, 2022. As also described elsewhere in this report, a restatement of certain items presented in our original Form 10-Q for the period ended June 30, 2022, was required as a result of a material weakness in our internal control over accounting for debt related to the application of certain interpretive accounting guidance related to ASC 260, Earnings Per Share. Specifically, when the fair value of a contract is reported as an asset or liability for accounting purposes and changes in the fair value are recorded through earnings, such as the Secured Convertible Notes, the calculations of diluted earnings per share using the “if-converted” method may require an adjustment to the numerator for any changes in income or loss that would result if the contract had been reported as an equity instrument for accounting purposes during the period, and in doing so the result is dilutive to the net loss per share calculation.

To respond to these material weaknesses, we have devoted, and plan to continue to devote, significant effort and resources to the remediation and improvement of our internal control over financial reporting. The elements of our remediation plan can only be accomplished over time, and we can provide no assurance that these initiatives will ultimately have the intended effects. For a discussion of management’s consideration of the material weaknesses identified with respect to our accounting and reporting for the Relief transaction as well as application of the “if-converted” method to the Secured Convertible Notes in certain situations, see Part I, Item 4, “Controls and Procedures” included in this report.

Any failure to remediate our existing or any future material weaknesses or otherwise maintain effective internal control over financial reporting could adversely impact our ability to report our financial position and results of operations on a timely and accurate basis. If our financial statements are not accurate, investors may not have a complete understanding of our operations and may lose confidence in our financial reporting and our business, reputation, results of operations, liquidity, financial condition, stock price and ability to access the capital markets could be adversely affected. In addition, we may be unable to maintain or regain compliance with applicable securities laws, stock market listing requirements and covenants regarding the timely filing of periodic reports, we may be subject to regulatory investigations and penalties, and we may face claims invoking the federal and state securities laws. Any such litigation or dispute, whether successful or not, could have a material adverse effect on our business, results of operations and financial condition.

We can provide no assurance that the measures we have taken and plan to take in the future will remediate the material weaknesses identified or that any additional material weaknesses or restatements of financial results will not arise in the future due to a failure to implement and maintain adequate internal control over financial reporting or circumvention of these controls. In addition, even if we are successful in strengthening our controls and procedures, in the future these controls and procedures may not be adequate to prevent or identify irregularities or errors or to facilitate the fair presentation of our financial statements.

Funding from our equity line purchase agreement with Lincoln Park may be limited or may be insufficient to fund our operations or implement our strategy.

Under our equity line purchase agreement with Lincoln Park, we may direct Lincoln Park to purchase up to $15.0 million of shares of our common stock, subject to certain limitations and conditions, over a 36-month period commencing on June 8, 2020, with $11.8 million obligation remaining as of June 30, 2022. There can be no assurance that we will be able to receive all of the remaining committed funds from Lincoln Park because the purchase agreement contains limitations, restrictions, requirements, events of default and other provisions that could limit our ability to cause Lincoln Park to buy common stock from us, including that Lincoln Park own no more than 9.99% of our common stock. In addition, under the applicable rules of the Nasdaq Capital Market, if we seek to issue shares in excess of 19.99% of the total common stock outstanding as of the date we entered into the purchase agreement, we may be required to seek stockholder approval in order to be in compliance with the Nasdaq Capital Market rules. Our inability to access a portion or the full amount remaining available under the purchase agreement, in the absence of any other financing sources, could have a material adverse effect on our business. Subsequent to signing the purchase agreement and through the date of this report, we have sold an aggregate of 1,400,000 shares of common stock under the purchase agreement for net proceeds of $3.2 million.

The extent to which we rely on Lincoln Park as a source of funding will depend on a number of factors, including the amount of working capital needed, the prevailing market price of our common stock and the extent to which we are able to secure working capital from other sources. We may also need to file one or more additional registration statements to register shares for resale under the terms of the purchase agreement and keep current an offering prospectus. If obtaining sufficient funding from Lincoln Park were to prove unavailable or prohibitively dilutive, we would need to secure another source of funding in order to satisfy our working capital needs. Even if we were to receive all $15.0 million in proceeds under the purchase agreement with Lincoln Park, we may still need additional capital to fully implement our business, operating and development plans. Should the financing we require to sustain our working capital needs be unavailable or prohibitively expensive when we require it, the consequences could be a material adverse effect on our business, operating results, financial condition and prospects.

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Funding from our ATM facility with JonesTrading and Roth Capital may be limited or may be insufficient to fund our operations or to implement our strategy.

We will need to keep current our shelf registration statement and an offering prospectus relating to our ATM facility with JonesTrading and Roth Capital in order to use the program to sell shares of our common stock, as well as provide certain periodic deliverables required by the amended and restated sales agreement with JonesTrading and Roth Capital for the ATM facility. Due to the SEC’s “baby shelf rules,” which prohibit companies with a public float of less than $75 million from issuing securities under a shelf registration statement in excess of one-third of such company’s public float in a 12-month period, we are currently only able to issue a limited number of shares which aggregate to no more than one-third of our public float using our shelf registration statement. From July 1, 2021 through the date of this report, we have sold an aggregate of 1,062,547 shares of common stock under our ATM facility for gross proceeds of $3.3 million. These sales of common stock are counted toward the maximum of one-third of our public float that can be sold in a 12-month period and reduce the remaining shares available to sell under our ATM facility during that 12-month period. The number of shares and price at which we may be able to sell shares under the ATM facility may be limited due to market conditions and other factors beyond our control.

We have a limited operating history and have incurred significant losses since our inception and anticipate that we will continue to incur losses for the foreseeable future and may never achieve or maintain profitability. The absence of any commercial sales and our limited operating history make it difficult to assess our future viability.

We are a development-stage pharmaceutical company with a limited operating history and a history of losses. Pharmaceutical product development is a highly speculative undertaking and involves a substantial degree of risk. We are focused principally on repurposing and/or reformulating existing drugs for serious rare and life-threatening diseases with significant unmet medical needs. We are not profitable and have incurred losses in each year since inception. We have only a limited operating history upon which you can evaluate our business and prospects. In addition, we have limited experience and have not yet demonstrated an ability to successfully overcome many of the risks and uncertainties frequently encountered by companies in new and rapidly evolving fields, particularly in the pharmaceutical industry. We have not generated any product sales revenue to date. We continue to incur significant research and development and other expenses related to our ongoing operations. Our net loss for the six months ended June 30, 2022 and 2021 was $11.8 million and $7.7 million, respectively. As of June 30, 2022, we had an accumulated deficit of $126.4 million. We expect to continue to incur losses for the foreseeable future as we continue our development of, and seek marketing approvals for, our product candidates.

We have devoted substantially all of our financial resources to identify, acquire, and develop our product candidates, including providing general and administrative support for our operations. To date, we have financed our operations primarily through the sale of equity securities. The amount of our future net losses will depend, in part, on the rate of our future expenditures and our ability to obtain funding through public or private equity or debt financings, strategic collaborations, or non-dilutive funding. We expect losses to increase as we conduct clinical trials and continue to develop our product candidates. We expect to invest significant funds into the research and development of our current product candidates to determine the potential to advance these product candidates to regulatory approval. We may also invest in acquiring or in-licensing additional product candidates to expand our pipeline.

If we obtain regulatory approval to market a product candidate, our future revenue will depend upon the size of any markets in which our product candidates may receive approval and our ability to achieve sufficient market acceptance, pricing, reimbursement from third-party payors, and adequate market share for our product candidates in those markets. Even if we obtain adequate market share for our product candidates, because the potential markets in which our product candidates may ultimately receive regulatory approval could be very small, we may never become profitable despite obtaining such market share and acceptance of our products.

We expect to continue to incur significant expenses and increasing operating losses for the foreseeable future, and our expenses will increase substantially if and as we:

• seek regulatory and marketing approvals and reimbursement for our product candidates

• continue the clinical development of our product candidates

• continue efforts to discover new product candidates

• undertake the manufacturing of our product candidates or increase volumes manufactured by third parties

• advance our programs into larger, more expensive clinical trials

• initiate additional preclinical, clinical, or other trials or studies for our product candidates

• establish a sales, marketing and distribution infrastructure to commercialize any products for which we may obtain marketing approval and market for ourselves

• seek to identify, assess, acquire and/or develop other product candidates

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• make milestone, royalty or other payments under third-party license agreements

• seek to maintain, protect and expand our intellectual property portfolio

• seek to attract and retain skilled personnel

• experience any delays or encounter issues with the development and potential for regulatory approval of our clinical candidates such as safety issues, clinical trial enrollment delays, longer follow-up for planned studies, additional major studies or supportive studies necessary to support marketing approval

Further, the net losses we incur will 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.

We currently have no source of commercial product sales revenue and may never be profitable.

While we have generated revenue related to the Collaboration Agreement with Relief, we have not generated any revenues from commercial sales of any of our current product candidates. Our ability to generate product revenue depends upon our ability to successfully identify, develop and commercialize these product candidates or other product candidates that we may develop, in-license or acquire in the future. Our ability to generate future product revenue from our current or future product candidates also depends on a number of additional factors, including our ability to:

• successfully complete research and clinical development of current and future product candidates

• establish and maintain supply and manufacturing relationships with third parties, and ensure adequate and legally compliant manufacturing of product candidates

• obtain regulatory approval from relevant regulatory authorities in jurisdictions where we intend to market our product candidates

• launch and commercialize future product candidates for which we obtain marketing approval, if any, and if launched independently, successfully establish a sales force and medical affairs, marketing, and distribution infrastructure

• obtain coverage and adequate product reimbursement from third-party payors, including government payors

• achieve market acceptance for our approved product candidates, if any

• establish, maintain and protect our intellectual property rights

• attract, hire and retain qualified personnel

In addition, because of the numerous risks and uncertainties associated with clinical product development, including that our product candidates may not successfully advance through development or achieve regulatory approval, we are unable to predict the timing or amount of any potential future product sales revenues. Our expenses also could increase beyond expectations if we decide to or are required by FDA, or comparable foreign regulatory authorities, to perform studies or trials to satisfy additional unexpected activities in addition to those that we currently anticipate.

Even if we complete the development and regulatory processes described above, we anticipate incurring significant costs associated with launching and commercializing these products.

We have incurred, and expect to continue to incur, increased costs and risks as a result of being a public company.

As a public company, we are required to comply with the Sarbanes-Oxley Act of 2002 (“SOX”), as well as rules and regulations implemented by the Securities and Exchange Commission (“SEC”) and the Nasdaq Capital Market (“Nasdaq”). Changes in the laws and regulations affecting public companies, including the provisions of SOX and rules adopted by the SEC and by Nasdaq, have resulted in, and will continue to result in, increased costs as we respond to their requirements. Given the risks inherent in the design and operation of internal controls over financial reporting, the effectiveness of our internal controls over financial reporting is uncertain. If our internal controls are not designed or operating effectively, we may not be able to conclude an evaluation of our internal control over financial reporting as required or we or our independent registered public accounting firm may determine that our internal control over financial reporting was not effective. We currently have a very limited workforce, and it may be difficult to adhere to appropriate internal controls over financial reporting or disclosure controls with such limited staffing. We are not yet subject to the provisions of section 404(b) of SOX, which would require our independent registered public accounting firm’s attestation on management’s assessment of internal controls over financial reporting. Investors may lose confidence in the reliability of our financial statements, which could cause the market price of our common stock to decline and which could affect our ability to run our business effectively. Being a public company could also make it more difficult or more costly for us to obtain certain types of insurance,

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including directors’ and officers’ liability insurance. The impact of these events could also make it more difficult for us to attract and retain qualified persons to serve on our Board of Directors, our Board committees, and as executive officers.

If we fail to maintain proper and effective internal controls, our ability to produce accurate financial statements on a timely basis could be impaired.

We are subject to the reporting requirements of the Exchange Act, SOX and Nasdaq rules and regulations. SOX requires, among other things, that we maintain effective disclosure controls and procedures and internal controls over financial reporting. We must perform system and process evaluation and testing of our internal control over financial reporting to allow management to report on the effectiveness of our internal controls over financial reporting in our Annual Report on Form 10-K filing for that year, as required by Section 404 of SOX.

As discussed in this report, we identified a material weakness in our internal control over financial reporting that resulted in a restatement of our unaudited condensed interim financial statements for the three months ended March 31, 2021 and June 30, 2021 relating to the Collaboration Agreement we entered into with Relief. As also discussed in this report, a restatement of certain items presented in our original Form 10-Q for the three and six months ended June 30, 2022, was required as a result of a material weakness in our internal control over accounting for debt related to the application of certain interpretive accounting guidance related to ASC 260, Earnings Per Share. Specifically, when the fair value of a contract is reported as an asset or liability for accounting purposes and changes in the fair value are recorded through earnings, such as the Secured Convertible Notes, the calculation of diluted earnings per share using the “if-converted” method may require an adjustment to the numerator for any changes in income or loss that would result if the contract had been reported as an equity instrument for accounting purposes during the period, and in doing so the result is dilutive to the net loss per share calculation. Although we are committed to continuing to improve our internal control processes, and although we will continue to diligently and vigorously review our internal controls over financial reporting, we cannot be certain that, in the future, a material weakness will not exist or otherwise be discovered. We may discover other weaknesses in our system of internal financial and accounting controls and procedures that could result in a material misstatement of our financial statements. Our internal control over financial reporting will not prevent or detect all errors and all fraud. A control system, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that the control system’s objectives will be met. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that misstatements due to error or fraud will not occur or that all control issues and instances of fraud will be detected.

If we are not able to comply with the requirements of Section 404 of SOX, or if we are unable to maintain proper and effective internal controls, we may not be able to produce timely and accurate financial statements. If that were to happen, the market price of our common stock could decline and we could be subject to penalties or investigations by Nasdaq or the SEC.

We face risks related to health epidemics including but not limited to the COVID-19 pandemic which could adversely affect our business.

Our business could be materially adversely affected by the effects of a widespread outbreak of contagious disease, including the recent pandemic of COVID-19, a respiratory illness caused by a novel coronavirus. While our employees work remotely a large part of the time, these effects could include disruptions or restrictions on our employees’ ability to travel, as well as disruptions at or closures of our facilities or the facilities of our manufacturers and suppliers, which could adversely impact our development activities and other operations. Health professionals may reduce staffing and reduce or postpone meetings with clients, colleagues, and others in response to the spread of an infectious disease. Such events may result in a period of business disruption, and in reduced operations, any of which could materially affect our business, financial condition, and results of operations. In addition, a significant outbreak of contagious diseases in the human population could result in a widespread health crisis that could adversely affect the economies and financial markets of many countries, resulting in an economic downturn or volatility that could adversely affect our manufacturers and suppliers and otherwise adversely impact our development activities and other operations. Current estimates of the possible impact of global issues on the drug supply chain and its application to our potential products may also be affected by the manufacturing steps required to be undertaken to produce finished product, including manufacture of active pharmaceutical ingredient, excipients, packaging, and labelling.

The extent to which the COVID-19 pandemic will continue to affect our business, results of operations, and financial condition is difficult to predict. The outbreak could potentially affect the business of FDA, European Medicines Agency (“EMA”) or other health authorities, which could result in delays in meetings related to our product candidates and our planned clinical trials and ultimately in the review and approval of our product candidates. The spread of COVID-19 may also slow potential enrollment of clinical trials and reduce the number of eligible patients for our clinical trials, thereby making recruitment more difficult and competitive. Prolonged disruptions to businesses, manufacturing and supply chain, including shelter-in-place or similar orders imposed by federal, state or local government authorities, and economic downturns can lead to material adverse effects on our business operations, including layoffs and/or suspension of our business operations. The COVID-19 outbreak and mitigation measures also have had and may continue to have an adverse impact on global economic conditions which could have an adverse

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effect on our business and financial condition, including impairing our ability to raise capital when and in the amount needed. 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. In addition, any COVID-19 infection of any of our employees could have a significant impact on our ability to conduct business.

We face substantial competitive and other risks in our ACER-2820 program, aimed against a variety of viruses, including cytomegalovirus, Zika, dengue, Ebola, and COVID-19, and we may be unable to raise non-dilutive capital to continue the program.

We have a development program for ACER-2820, a host-directed therapy against a variety of viruses, including cytomegalovirus, Zika, dengue, Ebola, and COVID-19. The competition for funding research and development in these diseases is intense and most of our competitors have greater resources available to them. Further advancement of the ACER-2820 program is dependent on our ability to raise non-dilutive capital. There can be no assurance that we will be able to obtain adequate financing to carry out our development plan or that, even if funding is obtained, our development of ACER-2820 will be successful, timely, and accepted by appropriate regulatory authorities.

Any acquisitions that we make could disrupt our business and harm our financial condition.

We expect to evaluate potential strategic acquisitions of complementary businesses, products or technologies worldwide. We may also consider joint ventures, licensing and other collaborative projects. We may not be able to identify appropriate acquisition candidates or strategic partners, or successfully negotiate, finance or integrate acquisitions of any businesses, products or technologies. Furthermore, the integration of any acquisition and management of any collaborative project may divert our management’s time and resources from our core business and disrupt our operations. As a company, we have limited experience with acquiring other companies, or with acquiring products outside of the U.S. Any cash acquisition we pursue would divert the cash we have on our balance sheet from our present clinical development programs. Any stock acquisitions would dilute our stockholders’ ownership.

Risks Related to the Secured Convertible Notes and Bridge Loan

The requirement that we repay in cash the outstanding principal balance and accrued interest on the Bridge Loan and the Secured Convertible Notes under certain circumstances, and the restrictive covenants contained in these debt instruments, could adversely affect our business plans, liquidity, financial condition and results of operations and may prevent us from taking actions that we would otherwise consider to be in our best interests. If we were to fail to meet our obligations under those agreements, the lender(s) could declare an event of default which, if not timely and fully cured to the lender(s) satisfaction, could result in a material adverse effect on our business, including but not limited to a loss of control over our cash and other assets, in which the lenders have a security interest.

The Secured Convertible Notes bear interest at an annual rate of 6.5%, with such interest payable quarterly; provided, however, that until the first to occur of ACER-001 Approval and the repayment in full of the Bridge Loan, interest will not be payable in cash but will accrue and be payable in cash within three business days of ACER-001 Approval. Additionally, subject to the restrictions set forth in an agreement among each of the Holders and SWK, as agent and lender, and any other intercreditor or subordination agreement entered into in connection with the Term Loan, each of the Holders has the right, during the 30-day periods beginning 12 months, 18 months and 24 months after the closing date of the Convertible Note Financing, to require us to redeem the Convertible Secured Note held by such Holder at a redemption price of the outstanding principal amount plus any accrued but unpaid interest. Any outstanding principal of the Secured Convertible Notes, together with all accrued and unpaid interest, will be due and payable on the earlier of March 14, 2025, or upon a change of control of Acer. With respect to the Bridge Loan, we have the option to capitalize the accrued interest on the Bridge Loan until November 15, 2022. Commencing November 15, 2022, the principal amount of the Bridge Loan amortizes at a rate of $0.7 million payable quarterly, with the final maturity being the earlier of (i) 12 business days after ACER-001 Approval if such occurs on or before September 30, 2022 or (ii) March 4, 2024 if ACER-001 Approval does not occur on or before September 30, 2022. We must also pay an exit fee to SWK of between 1.3 to 1.5 times the outstanding principal amount of the Bridge Loan, depending upon certain conditions and timing. Funding from the Term Loan will be available to us to be borrowed only upon and following ACER‑001 Approval and until December 31, 2022, and repayment terms do not commence until thereafter. We intend to use the proceeds from the Term Loan to refinance certain other indebtedness, including the Bridge Loan. However, if ACER-001 Approval does not occur prior to December 31, 2022, then the Term Loan will not be available to us unless we are able to obtain an extension for the time period beyond December 31, 2022, to the actual PDUFA target action date, and we may not have sufficient available cash or be able to obtain financing at the time we are required to make payments under our indebtedness. Funding of the Term Loan is also subject to the satisfaction of other conditions as set forth in the Marathon Credit Agreement. Moreover, although the Company’s resubmitted NDA in respect of ACER-001 (sodium phenylbutyrate) for oral suspension for the treatment of patients with UCDs has been accepted for substantive review by FDA, the Prescription Drug

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User Fee Act (“PDUFA”) target action date is January 15, 2023. Our failure to repurchase Secured Convertible Notes at a time when the repurchase is required by the notes, or to pay any cash for principal reduction or accrued interest on the Secured Convertible Notes or the Bridge Loan would constitute a default under the relevant indebtedness.

In addition, the Secured Convertible Notes and the Bridge Loan and Term Loan contain certain restrictive covenants. These obligations and covenants could have important consequences on our business. In particular, they could:

• require us to dedicate a substantial portion of our cash flow from operations to service our indebtedness, thereby reducing the amount of our cash available for other purposes

• limit our ability to obtain additional funds and otherwise raise additional capital for working capital, acquisitions, research and development expenditures, and general corporate purposes

• limit our ability to conduct acquisitions, joint ventures or other similar arrangements

• limit our flexibility in planning for, or reacting to, changes in our business and the pharmaceutical and biotechnology industry in which we operate and compete

• increase our vulnerability to general adverse economic and industry conditions

• place us at a competitive disadvantage compared to our competitors that have lower fixed costs or better access to capital resources

The debt service requirements of the Secured Convertible Notes and the Bridge Loan could intensify these risks. Our ability to make scheduled payments of interest, principal or to repurchase or refinance our indebtedness depends on our future performance, which is subject to economic, financial, competitive and other factors beyond our control. We may not receive the ACER‑001 Approval timely, or at all, which is a condition precedent in order to borrow under the Marathon Credit Agreement. Our business may not generate cash flow from operations in the future sufficient to service our debt and make necessary capital expenditures. If we are unable to generate such cash flow, and if the Term Loan does not become available to us to be borrowed, we may be required to adopt one or more alternatives, such as selling assets, restructuring debt or obtaining additional equity capital on terms that may be onerous or highly dilutive. No assurances can be given that we will be successful in making the required payments under our indebtedness, or in refinancing our obligations on favorable terms, or at all. Should we determine to refinance, it could be further dilutive to our stockholders. Our ability to refinance our indebtedness will depend on the capital markets and our financial condition at such time. We may not be able to engage in any of these activities or engage in these activities on desirable terms, which could result in a default on our debt obligations.

If we are unable to make the required cash payments or refinance our indebtedness, there could be a default under the Secured Convertible Notes and/or the Bridge Loan. In such event, or if a default otherwise occurs, including as a result of our failure to comply with the restrictive covenants contained therein, the interest rate on the outstanding principal balance of the Secured Convertible Notes will increase from 6.5% to 11.5% from and after any occurrence and during the continuance of an event of default, pursuant to the Secured Convertible Note Purchase Agreement. In addition, if not timely cured, the lenders could take such actions as may be available to senior secured creditors generally, and specifically under the loan agreements, including assertion of control over some or all of our assets.

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We entered into a loan agreement for the Secured Convertible Notes and Bridge Loan with Marathon and SWK, respectively, which provided us with initial loan proceeds of $12.5 million, less fees and costs, and which under certain circumstances can generate additional funding. In return for those funds and commitments, the Secured Convertible Notes and Bridge Loan require us to meet certain operating and financial covenants and place restrictions on our operating and financial flexibility. Some of those covenants and conditions may significantly restrict our ability to conduct our business.

The Secured Convertible Notes and Bridge Loan, by which we borrowed $6.0 million and $6.5 million, respectively, are secured by a first priority lien on all of our assets (including our intellectual property). Upon repayment of the Bridge Loan, we are required to pay an exit fee so that SWK receives an aggregate amount (inclusive of all principal, interest and origination and other fees paid to SWK under the SWK Credit Agreement) equal to (a) 1.3 times the outstanding principal amount of the Bridge Loan if ACER-001 Approval or such payment occurs on or prior to September 30, 2022, or (b) 1.5 times the outstanding principal amount of the Bridge Loan if each of ACER-001 Approval and such payment does not occur until after September 30, 2022. Our Bridge Loan bears interest at an annual rate equal to three-month London Interbank Offered Rates (LIBOR) (or such other rate as may be agreed between SWK and us following the date on which three-month LIBOR is no longer available), subject to a 1.0% LIBOR floor, plus a margin of 11.0%, and is therefore sensitive to changes in interest rates. If three-month LIBOR can no longer be determined or if the applicable governmental authority ceases to supervise or sanction such rates, then we will endeavor to agree with SWK on an alternate rate of interest that gives due consideration to the then prevailing market convention for determining interest for comparable loans in the United States. We cannot predict what the impact of any such alternative rate would be to our interest expense. However, the discontinuation, reform, or replacement of LIBOR or any other benchmark rates may result in fluctuating interest rates that may have a negative impact on our interest expense and cash flows. Furthermore, we cannot predict or quantify the time, effort and cost required to transition to the use of new benchmark rates, including with respect to negotiating and implementing any necessary changes to the Bridge Loan, and implementing changes to our systems and processes.

The Secured Convertible Notes and SWK Credit Agreement restrict our ability to incur new indebtedness, sell assets, and to pursue certain mergers, acquisitions, amalgamations or consolidations, other than permitted indebtedness or permitted acquisitions, that we may believe to be in our best interest. In addition, the SWK Credit Agreement and the Term Loan contain financial covenants that require us to maintain a minimum cash balance level. If we default under the SWK Credit Agreement, the lenders will be able to declare all obligations immediately due and payable, including certain fees and other obligations. The lenders could declare an event of default upon the occurrence of any event that they interpret as a material adverse change or material adverse effect, as defined in the SWK Credit Agreement. Any declaration by the lenders of an event of default could significantly harm our business and prospects and could cause the price of our common stock to decline.

The number of shares registered for resale on behalf of the holders of the Secured Convertible Notes is significant in relation to our trading volume.

All of the shares of common stock underlying the Secured Convertible Notes that we registered for resale on behalf of holders are “restricted securities” as that term is defined in Rule 144 under the Securities Act. We registered the offer and resale by the holders of the shares underlying the Secured Convertible Notes to satisfy certain registration rights we granted to the holders, and so that the shares may be offered for resale into the public market by the holders. If all such shares were sold into the market all at once or at about the same time, it could depress the market price of our stock during the period the registration statement covering the resale of the shares remains effective and also could affect our ability to raise equity capital.

A substantial number of shares of our common stock may be issued pursuant to the terms of the Secured Convertible Notes, which could cause the price of our common stock to decline.

The Secured Convertible Notes are convertible into shares of our common stock immediately after issuance at a conversion price of $2.50, for an aggregate of 2,400,000 shares upon conversion of the original principal amount (without taking into account the limitations on the conversion of the Secured Convertible Notes). Furthermore, the number of shares of common stock to be issued upon conversion of the Secured Convertible Notes may be substantially greater if accrued but unpaid interest on the Secured Convertible Notes is converted into shares of common stock at the same time as the principal is converted. We are unable to predict if and when the holders will convert their Secured Convertible Notes, and whether or not any accrued but unpaid interest will also be converted. While accrued interest on the Secured Convertible Notes is payable in cash according to their terms, any accrued but unpaid interest is also convertible into shares of common stock at the same time as the holder otherwise converts principal on the Secured Convertible Notes.

We registered 2,478,000 shares of our common stock for resale by the holders in the event that up to six months of accrued but unpaid interest is included in the conversion. The actual number of shares issued upon conversion of the Secured Convertible Notes may be more or less than this amount depending upon the outstanding principal balance and the amount of any accrued but unpaid interest at the time. We may need to register more shares if the accrued but unpaid interest at the time of conversion represents more than 78,000 shares of our common stock. The foregoing amount of shares registered does not take into account the limitations on conversion of the Secured Convertible Notes.

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Risks Related to the Clinical Development and Marketing Approval of Our Product Candidates

Our NDA for ACER-001 received a Complete Response Letter in June 2022, although our resubmission of the NDA has been accepted for substantive review with a January 15, 2023 PDUFA target action date.

In June 2022, we received FDA’s Complete Response Letter regarding our NDA for ACER-001 (sodium phenylbutyrate) for oral suspension for the treatment of patients with UCDs. The Complete Response Letter indicated that FDA cannot approve the NDA in its current form and stated: “[The FDA’s] field investigator could not complete inspection of [the Company’s third-party contract packaging manufacturer], because the facility was not ready for inspection. Satisfactory inspection is required before [the NDA] may be approved. Please notify us in writing when this facility is ready for inspection.” The FDA did not cite any other approvability issues in the Complete Response Letter pertaining to the NDA, nor request any additional clinical or pharmacokinetic studies be conducted prior to FDA approval. The FDA did provide one comment in the Complete Response Letter (identified as “not an approvability issue”) requesting additional existing nonclinical information to be provided in the resubmission of the NDA. We are actively collaborating with our third-party contract packaging manufacturer and cooperating with FDA to address FDA’s comments as soon as reasonably possible. In this regard, we announced on July 18, 2022 the resubmission of an updated NDA for ACER-001 (sodium phenylbutyrate) for oral suspension for the treatment of patients with UCDs and, on July 28, 2022, we announced FDA’s acceptance of such resubmission for review as well as a PDUFA target action date for the resubmitted NDA of January 15, 2023. There can be no assurance, however, that FDA inspection of the third-party contract packaging manufacturer facility will be satisfactory, that such inspection is the only impediment to FDA approval of our resubmitted NDA, that our resubmitted NDA will otherwise be approved by FDA, or that ACER-001 will be approved for any indication. Depending on our progress with FDA and the resubmitted NDA, as well as our available resources and needs, we may decide at any time not to continue development of ACER-001, which could have a material adverse effect on our business operations and financial prospects.

The marketing approval processes of FDA and comparable foreign authorities are lengthy, time-consuming and inherently unpredictable, and if we are ultimately unable to obtain marketing approval for our product candidates, including ACER-001, our business will be substantially harmed.

None of our current product candidates have gained marketing approval for sale in the U.S. or any other country, and we cannot guarantee that we will ever have marketable products. Our most advanced product, ACER-001, is currently under review with FDA with a January 15, 2023 PDUFA target action date. Our business is substantially dependent on our ability to complete the development of, obtain marketing approval for, and successfully commercialize our product candidates in a timely manner. We cannot commercialize our product candidates in the U.S. without first obtaining approval from FDA to market each product candidate. Similarly, we cannot commercialize our product candidates outside of the U.S. without obtaining regulatory approval from comparable foreign regulatory authorities. Our product candidates could fail to receive marketing approval for many reasons, including the following:

• the FDA or comparable foreign regulatory authorities may find inadequate the manufacturing processes or facilities of third-party manufacturers with which we contract for clinical and commercial supplies

• we may be unable to demonstrate to the satisfaction of FDA or comparable foreign regulatory authorities that a product candidate is safe and effective for its proposed indication

• the results of clinical trials may not meet the level of statistical significance required by FDA or comparable foreign regulatory authorities for approval

• we may be unable to demonstrate that a product candidate’s clinical and other benefits outweigh its safety risks

• the FDA or comparable foreign regulatory authorities may disagree with the design or implementation of any clinical trials we conduct or rely upon for regulatory approval

• the FDA or comparable foreign regulatory authorities may find the human subject protections for our clinical trials inadequate and place a clinical hold on an IND at the time of its submission precluding commencement of any trials or a clinical hold on one or more clinical trials at any time during the conduct of our clinical trials

• the FDA could determine that we cannot rely on Section 505(b)(2) of the Federal Food, Drug and Cosmetic Act (“FFDCA”) for any or all of our product candidates, and we may be required to conduct clinical trials or provide other forms of substantial evidence of effectiveness instead of, or in addition to, relying on third-party data, as is the position of FDA with respect to our NDA for EDSIVO^TM

• the FDA or comparable foreign regulatory authorities may disagree with our interpretation of data from preclinical studies or clinical trials

• the FDA could determine that we have identified the wrong reference listed drug or drugs or that approval of our 505(b)(2) application for any of our product candidates is blocked by patent or non-patent exclusivity of the reference listed drug or drugs

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• the data collected from clinical trials of our product candidates may not be sufficient to support the submission of an application to obtain marketing approval in the U.S. or elsewhere

• the approval policies or regulations of FDA or comparable foreign regulatory authorities may significantly change in a manner that would delay marketing approval

Before obtaining marketing approval for the commercial sale of any drug product for a target indication, we must demonstrate in preclinical studies and well-controlled clinical trials and, to the satisfaction of the applicable regulatory authorities, that the product is safe and effective for its intended use and that the manufacturing facilities, processes, and controls are adequate to preserve the drug’s identity, strength, quality and purity. In the U.S., it is necessary to submit and obtain approval of an NDA from FDA. An NDA must include extensive preclinical and clinical data and supporting information to establish the product safety and efficacy for each desired indication. The NDA must also include significant information regarding the chemistry, manufacturing, and controls for the product. After the submission but before approval of the NDA, the manufacturing facilities used to manufacture a product candidate must be inspected by FDA to ensure compliance with the applicable Current Good Manufacturing Practice (“cGMP”) requirements. The FDA and the Competent Authorities of the Member States of the European Economic Area (“EEA”) and comparable foreign regulatory authorities, may also inspect our clinical trial sites and audit clinical study data to ensure that our studies are properly conducted in accordance with the IND regulations, human subject protection regulations, and current good clinical practice (“cGCP”).

Obtaining approval of an NDA is a lengthy, expensive and uncertain process, and approval may not be obtained. Upon submission of an NDA, FDA must make an initial determination that the application is sufficiently complete to accept the submission for filing. We cannot be certain that any submissions, even those that are or have been accepted for filing and reviewed by FDA, will ultimately be approved. If the application is not accepted for review, or if FDA finds after review that the NDA is not approvable as submitted, FDA may require that we conduct additional clinical studies or preclinical testing or take other actions before it will reconsider our application. If FDA requires additional studies or data, we would incur increased costs and delays in the marketing approval process, which may require us to reduce headcount or other expenses and/or expend more resources than we have available. In addition, FDA may not consider any additional information to be complete or sufficient to support the filing or approval of the NDA.

Regulatory authorities outside of the U.S., such as in Europe and Japan and in emerging markets, also have requirements for approval of drugs for commercial sale with which we must comply prior to marketing in those areas. Regulatory requirements can vary widely from country to country and could delay or prevent the introduction of our product candidates. Clinical trials conducted in one country may not be accepted or the results may not be found adequate by regulatory authorities in other countries, and obtaining regulatory approval in one country does not mean that regulatory approval will be obtained in any other country. However, the failure to obtain regulatory approval in one jurisdiction could have a negative impact on our ability to obtain approval in a different jurisdiction. Approval processes vary among countries and can involve additional product candidate testing and validation and additional administrative review periods. Seeking foreign regulatory approval could require additional non-clinical studies or clinical trials, which could be costly and time-consuming. Foreign regulatory approval may include all of the risks associated with obtaining FDA approval. For all of these reasons, we may not obtain foreign regulatory approvals on a timely basis, if at all.

The process to develop, obtain marketing approval for, and commercialize product candidates is long, complex and costly, both inside and outside of the U.S., and approval is never guaranteed. The time required to obtain approval by FDA and comparable foreign authorities is unpredictable but typically takes many years following the commencement of clinical trials and depends upon numerous factors, including the substantial discretion of the regulatory authorities. In addition, approval policies, 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. Even if our product candidates were to successfully obtain approval from regulatory authorities, any such approval might significantly limit the approved indications for use, including more limited patient populations, require that precautions, warnings or contraindications be included on the product labeling, including black box warnings, require expensive and time-consuming post-approval clinical studies, risk evaluation and mitigation strategies or surveillance as conditions of approval, or, through the product label, the approval may limit the claims that we may make, which may impede the successful commercialization of our product candidates. Following any approval for commercial sale of our product candidates, certain changes to the product, such as changes in manufacturing processes and additional labeling claims, as well as new safety information, may require new studies and will be subject to additional FDA notification, or review and approval. Also, marketing approval for any of our product candidates may be withdrawn. If we are unable to obtain marketing approval for our product candidates in one or more jurisdictions, or any approval contains significant limitations, our ability to market to our full target market will be reduced and our ability to realize the full market potential of our product candidates will be impaired. Furthermore, we may not be able to obtain sufficient funding or generate sufficient revenue and cash flows to continue or complete the development of any of our current or future product candidates.

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If we are unable to obtain approval under Section 505(b)(2) of the FFDCA or if we are required to generate additional data related to safety or efficacy in order to seek approval under Section 505(b)(2), we may be unable to meet our anticipated development and commercialization timelines, and could decide not to pursue further development, depending on the expected time, cost, and risks associated with generating any such additional data, which could have a negative impact on the success of our product development efforts.

Traditional drug development typically relies upon Section 505(b)(1) of the FFDCA for seeking marketing authorization in the U.S., where the sponsor of the product candidate (i.e., the applicant for marketing authorization) is required to conduct all of the studies needed to demonstrate the safety and efficacy of such candidate, a pathway that we plan to use for ACER-801 and EDSIVO^TM. Our current strategy for seeking marketing authorization in the U.S. for ACER-001 relies at least in part on Section 505(b)(2) of the FFDCA, which permits use of a marketing application, referred to as a 505(b)(2) application, where at least some of the information needed to demonstrate the safety and efficacy of the product candidate at issue for approval comes from studies not conducted by or for the applicant and for which the applicant has not obtained a right of reference or use. The FDA interprets this to mean that an applicant may rely for approval on such data as that found in published literature or FDA’s finding of safety or effectiveness, or both, of a previously approved drug product owned by a third party. There is no assurance that FDA would find third-party data relied upon by us in a 505(b)(2) application sufficient or adequate to support approval, and FDA may require us to generate additional data to support the safety and efficacy of our product candidates. Depending on the time, nature, risk, and cost of obtaining that data or undertaking the required activities, we may decide that we are not able or willing to proceed with development, and may or may not reduce headcount and spending accordingly.

If the data to be relied upon in a 505(b)(2) application are related to drug products previously approved by FDA and covered by patents that are listed in FDA’s Orange Book, we would be required to submit with our 505(b)(2) application a Paragraph IV Certification in which we must certify that we do not infringe the listed patents or that such patents are invalid or unenforceable, and provide notice to the patent owner or the holder of the approved NDA. The patent owner or NDA holder would have 45 days from receipt of the notification of our Paragraph IV Certification to initiate a patent infringement action against us. If an infringement action is initiated, the approval of our NDA would be subject to a stay of up to 30 months or more while we defend against such a suit. Approval of our product candidates under Section 505(b)(2) may, therefore, be delayed until patent exclusivity expires or until we successfully challenge the applicability of those patents to our product candidates. Alternatively, we might elect a Section 505(b)(1) pathway to generate sufficient clinical data so that we would no longer need to rely on third-party data. However, a Section 505(b)(1) pathway would likely be costly and time-consuming and there would be no assurance that such data generated from such additional activities would be sufficient to seek or obtain approval.

We may not be able to obtain shortened review of our applications, and FDA may not agree that our product candidates qualify for marketing approval. If we are required to generate additional data to support approval, we may be unable to meet anticipated or reasonable development and commercialization timelines, may be unable to generate the additional data at a reasonable cost, or at all, and may be unable to obtain marketing approval of our product candidates. If FDA changes its interpretation of Section 505(b)(2) allowing reliance on data in a previously approved drug application owned by a third party, or if there is a change in the law affecting Section 505(b)(2), this could delay or even prevent FDA from approving any Section 505(b)(2) application that we submit.

Marketing approval may be substantially delayed or may not be obtained for one or all of our product candidates if regulatory authorities require additional or more studies to assess the safety and efficacy of our product candidates. We could decide not to pursue further development of one or all of our product candidates, depending on, among other things, the expected time, cost, and risks associated with generating any such additional data.

We may be unable to initiate or complete development of our product candidates on schedule, if at all. The completion of the studies for certain of our product candidates will require us to obtain substantial additional funding beyond our current resources. In addition, regulatory authorities may require additional or more time-consuming studies to assess the safety or efficacy of our product candidates than we are currently planning. For example, in June 2019, we received a Complete Response Letter from FDA regarding our NDA for EDSIVO™ for the treatment of vEDS. The Complete Response Letter stated that it will be necessary to conduct an adequate and well-controlled trial to determine whether celiprolol reduces the risk of clinical events in patients with vEDS. In light of FDA’s Complete Response Letter regarding our NDA for EDSIVO^TM, we halted precommercial activities. In December 2019, we submitted a Formal Dispute Resolution Request to the Office of New Drugs appealing FDA’s decision as outlined in the Complete Response Letter. In March 2020, we received a response to our Formal Dispute Resolution Request from the Office of New Drugs of FDA stating that it had denied our appeal of the Complete Response Letter in relation to the NDA for EDSIVO™. In its Appeal Denied letter, the Office of New Drugs (i) described possible paths forward for us to explore that could provide the substantial evidence of effectiveness needed to support a potential resubmission of the EDSIVO™ NDA for the treatment of patients with vEDS with a confirmed COL3A1 mutation and (ii) referred to the FDA Guidance document issued in December 2019, where substantial evidence of effectiveness can be provided by two or more adequate and well-controlled studies demonstrating efficacy, or a single positive adequate and well-controlled study plus confirmatory evidence.

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Following a Type B meeting with FDA in the second quarter of 2021, we are now conducting a U.S.-based prospective, randomized, double-blind, placebo-controlled, decentralized pivotal clinical trial in patients with COL3A1+ vEDS, which we refer to as the DiSCOVER trial. The proposed design features of the trial under SPA agreement with FDA include: the acceptability of a decentralized (virtual) clinical trial design and use of an independent centralized adjudication committee; acceptability of a primary endpoint based on clinical events associated with disease outcome; agreement with modest safety data collection (based on the known safety profile of the drug); and a statistical plan that considers the rare disease classification of vEDS. In the fourth quarter of 2021, we submitted a protocol for the prospective pivotal trial, along with an IND. In April 2022, we received breakthrough therapy designation and reached agreement on a SPA in May 2022. The trial plan is to enroll approximately 150 COL3A1+ vEDS patients in the U.S., and the duration of the trial is estimated to be approximately 3.5 years to complete once fully enrolled (based on statistical power calculations and number of primary events). Additional capital will be needed to fund the trial beyond the third quarter of 2022. One interim analysis (based on number of primary events) is planned at approximately 24 months after full enrollment. There can be no assurance that the resulting data from the trial would be adequate to support approval of our NDA. We may also conclude at any point that the cost, risk and uncertainty of obtaining that additional data does not justify continuing with the development of EDSIVO™.

We currently do not have, and may not be able to obtain, adequate funding to complete the necessary steps for approval for any or all of our product candidates. Additional delays may result if FDA, an FDA Advisory Committee (if one is convened to review any NDA we file) or another regulatory authority indicates that a product candidate should not be approved or there should be restrictions on approval, such as the requirement for a Risk Evaluation and Mitigation Strategy (“REMS”), to ensure the safe use of the drug. Delays in marketing approval or rejections of applications for marketing approval in the U.S. or other markets may result from many factors, including:

• the FDA’s or comparable foreign regulatory authorities’ disagreement with the design or implementation of any clinical trials we conduct or rely on for regulatory approval

• regulatory requests for additional analyses, reports, data, non-clinical and preclinical studies and clinical trials

• regulatory questions or disagreement by FDA or comparable regulatory authorities regarding interpretations of data and results and the emergence of new information regarding our current or future product candidates or the field of research

• unfavorable or inconclusive results of clinical trials and supportive non-clinical studies, including unfavorable results regarding safety or efficacy of our product candidates during clinical trials

• failure to meet the level of statistical significance required for approval

• inability to demonstrate that a product candidate’s clinical and other benefits outweigh its safety risks

• lack of adequate funding to commence or continue our clinical trials due to unforeseen costs or other business decisions

• regulatory authorities may find inadequate the manufacturing processes or facilities of the third-party manufacturers with which we contract for clinical and commercial supplies

• we may have insufficient funds to pay the significant user fees required by FDA upon the filing of an NDA

• the approval policies or regulations of FDA or comparable foreign regulatory authorities may significantly change in a manner that would delay marketing approval

The lengthy and unpredictable approval process, as well as the unpredictability of future clinical trial results, may result in our failure to obtain marketing approval to market our product candidates, which would significantly harm our business, results of operations and prospects and could lead to reduction in headcount, including those employees recently hired to assist in commercial launch and marketing of our products, including but not limited to ACER-001.

Clinical drug development involves a lengthy and expensive process with an uncertain outcome. Clinical development of product candidates for rare diseases carries additional risks, such as recruiting patients in a very small patient population.

Clinical testing is expensive and can take many years to complete, and its outcome is inherently uncertain. The FDA and comparable foreign regulatory authorities have substantial discretion in the approval process and determining when or whether marketing approval will be obtained for our current product candidates. Even if we believe the data collected from clinical trials of our current product candidates are promising, such data may not be sufficient to support approval by FDA or comparable foreign authorities. Our future clinical trial results may not be successful.

It is impossible to predict the extent to which the clinical trial process may be affected by legislative and regulatory developments. Due to these and other factors, our current product candidates or future product candidates could take a significantly longer time to gain marketing approval than expected or may never gain marketing approval. This could delay or eliminate any potential product revenue by delaying or terminating the potential commercialization of our current product candidates.

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Preclinical trials must also be conducted in accordance with FDA and comparable foreign authorities’ legal requirements, regulations or guidelines, including current Good Laboratory Practice (“cGLP”), an international standard meant to harmonize the conduct and quality of nonclinical studies and the archiving and reporting of findings. Preclinical studies including long-term toxicity studies and carcinogenicity studies in animals may result in findings that may require further evaluation, which could affect the risk-benefit evaluation of clinical development, or which may lead the regulatory agencies to delay, prohibit the initiation of or halt clinical trials or delay or deny marketing authorization applications. Failure to adhere to the applicable cGLP standards or misconduct during the course of preclinical trials may invalidate the data and require one or more studies to be repeated or additional testing to be conducted.

Clinical trials must also be conducted in accordance with FDA and comparable foreign authorities’ legal requirements, regulations or guidelines, including human subject protection requirements and cGCP. Clinical trials are subject to further oversight by these governmental agencies and Institutional Review Boards (“IRBs”), at the medical institutions where the clinical trials are conducted. In addition, clinical trials must be conducted with supplies of our current product candidates produced under cGMP and other requirements. Clinical trials are usually conducted at multiple sites, potentially including some sites in countries outside the U.S. and the European Union, which may subject us to further delays and expenses as a result of increased shipment costs, additional regulatory requirements and the engagement of foreign and non-EU clinical research organizations, as well as expose us to risks associated with clinical investigators who are unknown to FDA or the European regulatory authorities, and with different standards of diagnosis, screening and medical care.

The commencement and completion of clinical trials for our current product candidates may be delayed, suspended or terminated as a result of many factors, including but not limited to:

• the delay or refusal of regulators or IRBs to authorize us to commence a clinical trial at a prospective trial site and changes in regulatory requirements, policies and guidelines

• the FDA or comparable foreign regulatory authorities disagreeing as to the design or implementation of our clinical trials

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

• delays in patient enrollment and variability in the number and types of patients available for clinical trials

• the inability to enroll a sufficient number of patients in trials to ensure adequate statistical power to detect statistically significant treatment effects

• lower than anticipated retention rates of patients and volunteers in clinical trials

• clinical sites deviating from trial protocol or dropping out of a trial

• adding new clinical trial sites

• negative or inconclusive results, which may require us to conduct additional preclinical or clinical trials or to abandon projects that we expect to be promising

• safety or tolerability concerns could cause us to suspend or terminate a trial if we find that the participants are being exposed to unacceptable health risks

• regulators or IRBs requiring that we or our investigators suspend or terminate clinical research for various reasons, including noncompliance with regulatory requirements

• our third-party research and manufacturing contractors failing to comply with regulatory requirements or meet their contractual obligations to us in a timely manner, or at all

• difficulty in maintaining contact with patients after treatment, resulting in incomplete data

• delays in establishing the appropriate dosage levels

• the quality or stability of our current product candidates falling below acceptable standards

• the inability to produce or obtain sufficient quantities of our current product candidates to complete clinical trials

• exceeding budgeted costs due to difficulty in predicting accurately the costs associated with clinical trials

Patient enrollment is a significant factor in the timing of clinical trials and is affected by many factors, including the size and nature of the patient population, the proximity of patients to clinical sites, the eligibility criteria for the trial, the design of the clinical trial, competing clinical trials and clinicians’ and patients’ perceptions as to the potential advantages of the drug being studied in relation to other available therapies, including any new drugs or treatments that may be approved for the indications we are investigating. In addition, the ongoing COVID-19 pandemic may materially adversely affect our ability to recruit qualified subjects for our clinical trials for our product candidates. It is impossible to predict that impact on our clinical trials and our business.

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There are significant requirements imposed on us and on clinical investigators who conduct clinical trials that we sponsor. Although we are responsible for selecting qualified clinical investigators, providing them with the information they need to conduct the clinical trial properly, ensuring proper monitoring of the clinical trial, and ensuring that the clinical trial is conducted in accordance with the general investigational plan and protocols contained in the IND, we cannot ensure the clinical investigators will maintain compliance with all regulatory requirements at all times. The pharmaceutical industry has experienced cases where clinical investigators have been found to incorrectly record data, omit data, or even falsify data. We cannot ensure that the clinical investigators in our trials will not make mistakes or otherwise compromise the integrity or validity of data, any of which would have a significant negative effect on our ability to obtain marketing approval, our business, and our financial condition.

We could encounter delays if a clinical trial is suspended or terminated by us, by the IRBs of the institutions in which such trial is being conducted, by the data safety monitoring board (“DSMB”) for such trial, or by FDA or comparable foreign regulatory authorities. We or such authorities may impose a suspension or termination due to a number of factors, including failure to conduct the clinical trial in accordance with regulatory requirements or our clinical protocols, inspection of the clinical trial operations or trial site by FDA or comparable foreign regulatory authorities resulting in the imposition of a clinical hold, safety issues or adverse side effects, failure to demonstrate a benefit from using the drug, changes in governmental regulations or administrative actions or lack of adequate funding to continue the clinical trial. If we experience delays in the completion or termination of any clinical trial of our current product candidates, the commercial prospects of our current product candidates will be harmed, and our ability to generate product revenues from our product candidates will be delayed. In addition, any delays in completing our clinical trials will increase our costs, slow our development and approval process and jeopardize our ability to commence product sales and generate revenues. Many of the factors that cause, or lead to, a delay in the commencement or completion of clinical trials may also ultimately lead to the denial of marketing approval of our product candidates.

Any of these occurrences could materially adversely affect our business, financial condition, results of operations, and prospects. In addition, many of the factors that cause, or lead to, a delay in the commencement or completion of clinical trials may also ultimately lead to the denial of marketing approval of our current product candidates. Significant clinical trial delays could also allow our competitors to bring products to market before we are able to do so, shorten any periods during which we have the exclusive right to commercialize our current product candidates and impair our ability to commercialize our current product candidates, which may harm our business, financial condition, results of operations, and prospects.

Clinical failure can occur at any stage of clinical development. Because the results of earlier clinical trials are not necessarily predictive of future results, any product candidate we advance through clinical trials may not have favorable results in later clinical trials or receive marketing approval.

Clinical failure can occur at any stage of our clinical development. 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. Product candidates in later stages of clinical trials may fail to show the desired safety and efficacy traits despite having progressed through preclinical studies and initial clinical trials. A number of companies in the pharmaceutical industry have suffered significant setbacks in advanced clinical trials due to lack of efficacy or adverse safety profiles, notwithstanding promising results in earlier trials. Clinical trials may produce negative or inconclusive results, and we may decide, or regulators may require us, to conduct additional clinical or preclinical testing. Data obtained from tests are susceptible to varying interpretations, and regulators may not interpret our data as favorably as we do, which may delay, limit or prevent marketing approval.

In addition, the design of a clinical trial can determine whether our results will support approval of a product or approval of a product for desired indications, and flaws or shortcomings in the design of a clinical trial may not become apparent until the clinical trial is well advanced. Further, clinical trials of potential products often reveal that it is not practical or feasible to continue development efforts. If one of our product candidates is found to be unsafe or lack efficacy, we will not be able to obtain marketing approval for it and our business would be harmed. For example, if the results of our clinical trials of our product candidates do not achieve pre-specified endpoints or we are unable to provide primary or secondary endpoint measurements deemed acceptable by FDA or comparable foreign regulators or if we are unable to demonstrate an acceptable level of safety relative to the efficacy associated with our proposed indications, the prospects for approval of our product candidates would be materially and adversely affected. A number of companies in the pharmaceutical industry, including those with greater resources and experience than us, have suffered significant setbacks in Phase 2 and Phase 3 clinical trials, even after seeing promising results in earlier clinical trials.

In some instances, there can be significant variability in safety and/or efficacy results between different trials of the same product candidate due to numerous factors, including differences in trial protocols and design, the size and type of the patient population, adherence to the dosing regimen and the rate of dropout among clinical trial participants. We do not know whether any clinical trials we may conduct will demonstrate consistent and/or adequate efficacy and safety to obtain marketing approval for our product candidates.

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As an organization, we have limited experience in designing and completing clinical trials and may be unable to do so efficiently or at all for our current product candidates or any product candidate we develop.

We will need to conduct clinical trials of our product candidates. The conduct of clinical trials and the submission of a successful NDA is a complicated process. As an organization, we have limited experience in designing and completing clinical trials, and we have limited experience in preparing and submitting regulatory filings. Consequently, we may be unable to successfully and efficiently execute and complete necessary clinical trials in a way that leads to NDA submission and approval of our product candidates. We may require more time and incur greater costs than anticipated and may not succeed in obtaining marketing approval of the product candidates we develop. Failure to commence or complete, or delays in, our planned clinical trials would prevent us from or delay us in commercializing our current product candidates or any other product candidate we develop.

Our product candidates may cause undesirable adverse effects or have other properties that could delay or prevent their marketing approval, limit the commercial profile of an approved label, or result in significant negative consequences following marketing approval, if obtained.

Undesirable side effects caused by our product candidates could cause us or regulatory authorities to interrupt, delay or halt clinical trials and could result in a more restrictive label or the delay or denial of marketing approval by FDA or other comparable foreign authorities. If any of our current product candidates or any other product candidate we develop is associated with serious adverse, undesirable or unacceptable side effects, we may need to abandon such candidate’s development or limit development to certain uses or subpopulations in which such side effects are less prevalent, less severe or more acceptable from a risk-benefit perspective. Many compounds that initially showed promise in early-stage or clinical testing have later been found to cause side effects that prevented further development of the compound. Results of our trials could reveal a high and unacceptable prevalence of these or other side effects. In such an event, our trials could be suspended or terminated, and FDA or comparable foreign regulatory authorities could order us to cease further development of or deny approval of our product candidates for any or all targeted indications. The drug-related side effects could affect patient recruitment or the ability of enrolled patients to complete the trial or result in potential product liability claims.

If our product candidates receive marketing approval, and we or others later identify undesirable side effects caused by such products, a number of potentially significant negative consequences could result, including:

• regulatory authorities may withdraw approvals of such product

• we may be required to recall a product or change the way such product is administered to patients

• additional restrictions may be imposed on the marketing of the particular product or the manufacturing process for the product or any component thereof

• regulatory authorities may require the addition of labeling statements, such as a precaution, “black box” warning or other warnings or a contraindication

• we or our collaborators may be required to implement a REMS or create a medication guide outlining the risks of such side effect for distribution to patients

• we or our collaborators could be sued and held liable for harm caused to patients

• the product may become less competitive

• our reputation may suffer

Any of these events could prevent us from achieving or maintaining market acceptance of our product candidates, if approved, and could materially adversely affect our business, financial condition, results of operations and prospects.

Even if we receive marketing approval for our product candidates, such approved products will be subject to ongoing obligations and continued regulatory review, which may result in significant additional expense. Additionally, our product candidates, if approved, could be subject to labeling and other restrictions, and we may be subject to penalties and legal sanctions if we fail to comply with regulatory requirements or experience unanticipated problems with our approved products.

If FDA approves any of our product candidates, the manufacturing processes, labeling, packaging, distribution, adverse event reporting, storage, advertising, promotion and recordkeeping for the product will be subject to extensive and ongoing regulatory requirements. These requirements include submissions of safety and other post-marketing information and reports, registration, as well as continued compliance with cGMP regulations and GCP for any clinical trials that we conduct post-approval. Any marketing approvals that we receive for our product candidates may also be subject to limitations on the approved indicated uses for which the product may be marketed or to conditions of approval, or contain requirements for potentially costly post-marketing testing, including Phase 4 clinical trials, and surveillance to monitor safety and efficacy.

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Later discovery of previously unknown problems with an approved product, including adverse events of unanticipated severity or frequency, or with manufacturing operations or processes, or failure to comply with regulatory requirements, or evidence of acts that raise questions about the integrity of data supporting the product approval, may result in, among other things:

• restrictions on the marketing or manufacturing of the product, withdrawal of the product from the market, or voluntary or mandatory product recalls

• fines, warning letters, or holds on clinical trials

• refusal by FDA 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

• injunctions or the imposition of civil or criminal penalties

The FDA’s policies may change and additional government regulations may be enacted that could prevent, limit or delay marketing approval, manufacturing or commercialization of our product candidates. We cannot predict the likelihood, nature or extent of government regulation that may arise from future legislation or administrative action, either in the U.S. or abroad. If we are slow or unable to adapt to changes in existing requirements or the adoption of new requirements or policies, or we are not able to maintain regulatory compliance, we may lose any marketing approval that may have been obtained and we may not achieve or sustain profitability, which would adversely affect our business.

Agencies such as FDA and national competition regulators in European countries regulate the promotion and uses of drugs not consistent with approved product labeling requirements. If we are found to have improperly promoted our current product candidates for uses beyond those that are approved, we may become subject to significant liability.

Regulatory authorities such as FDA and national competition agencies in Europe strictly regulate the promotional claims that may be made about prescription products, such as ACER-001, ACER-801, EDSIVO^TM, or ACER-2820, if approved. In particular, a product may not be promoted for uses that are not approved by FDA or comparable foreign regulatory authorities as reflected in the product’s approved labeling, known as “off-label” use, nor may it be promoted prior to obtaining marketing approval. If we receive marketing approval for our product candidates for our proposed indications, physicians may nevertheless use our products for their patients in a manner that is inconsistent with the approved label if the physicians personally believe in their professional medical judgment it could be used in such manner. Although physicians may prescribe legally available drugs for off-label uses, manufacturers may not market or promote such off-label uses.

In addition, FDA requires that promotional claims not be “false or misleading” as such terms are defined in FDA’s regulations. For example, FDA requires substantial evidence, which generally consists of two adequate and well-controlled clinical trials, for a company to make a claim that its product is superior to another product in terms of safety or effectiveness. Generally, unless we perform clinical trials meeting that standard comparing our product candidates to competitive products and these claims are approved in our product labeling, we will not be able promote our current product candidates as superior to other products. If we are found to have made such claims, we may become subject to significant liability. In the U.S., the federal government has levied large civil and criminal fines against companies for alleged improper promotion and has enjoined several companies from engaging in improper promotion. The FDA has also requested that companies enter into consent decrees or corporate integrity agreements. The FDA could also seek permanent injunctions under which specified promotional conduct is monitored, changed or curtailed.

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Our current and future relationships with healthcare professionals, investigators, consultants, collaborators, actual customers, potential customers and third-party payors in the U.S. and elsewhere may be subject, directly or indirectly, to applicable anti-kickback, fraud and abuse, false claims, physician payment transparency, health information privacy and security and other healthcare laws and regulations, which could expose us to sanctions.

Healthcare providers, physicians and third-party payors in the U.S. and elsewhere will play a primary role in the recommendation and prescription of any drug candidates for which we obtain marketing approval. Our current and future arrangements with healthcare professionals, investigators, consultants, collaborators, actual customers, potential customers and third-party payors may expose us to broadly applicable fraud and abuse and other healthcare laws, including, without limitation, the federal Anti-Kickback Statute and the federal False Claims Act, that may constrain the business or financial arrangements and relationships through which we sell, market and distribute any drug candidates for which we obtain marketing approval. In addition, we may be subject to physician payment transparency laws and patient privacy and security regulation by the U.S. federal government and states and by the foreign jurisdictions in which we conduct our business. The applicable federal, state and foreign healthcare laws that may affect our ability to operate include the following:

• the federal Anti-Kickback Statute, which 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, lease, order or recommendation of, any good, facility, item or service, for which payment may be made, in whole or in part, under federal and state healthcare programs such as Medicare and Medicaid

• federal civil and criminal false claims laws and civil monetary penalty laws, including the federal False Claims Act, which impose criminal and civil penalties, including civil whistleblower or qui tam actions, against individuals or entities for, among other things, knowingly presenting, or causing to be presented, to the federal government, including the Medicare and Medicaid programs, claims for payment that are false or fraudulent or making a false statement to avoid, decrease or conceal an obligation to pay money to the federal government

• the civil monetary penalties statute, which imposes penalties against any person or entity who, among other things, is determined to have presented or caused to be presented a claim to a federal health program that the person knows or should know is for an item or service that was not provided as claimed or is false or fraudulent

• the federal Health Insurance Portability and Accountability Act of 1996 (“HIPAA”), which created new federal criminal statutes that prohibit knowingly and willfully executing, or attempting to execute, a scheme to defraud any healthcare benefit program or obtain, by means of false or fraudulent pretenses, representations or promises, any of the money or property owned by, or under the custody or control of, any healthcare benefit program, regardless of the payor (e.g., public or private), knowingly and willfully embezzling or stealing from a healthcare benefit program, willfully obstructing a criminal investigation of a healthcare offense and knowingly and willfully falsifying, concealing or covering up by any trick or device a material fact or making any materially false statements in connection with the delivery of, or payment for, healthcare benefits, items or services relating to healthcare matters

• HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act of 2009 (“HITECH”) and its implementing regulations, which impose obligations on covered entities, including healthcare providers, health plans, and healthcare clearinghouses, as well as their respective business associates that create, receive, maintain or transmit individually identifiable health information for or on behalf of a covered entity, with respect to safeguarding the privacy, security and transmission of individually identifiable health information without proper written authorization

• the federal Open Payments program, created under Section 6002 of the Patient Protection and Affordable Care Act (“the Affordable Care Act”) and its implementing regulations, which imposed annual reporting requirements for manufacturers of drugs, devices, biologicals and medical supplies for certain payments and “transfers of value” provided to physicians and teaching hospitals, as well as ownership and investment interests held by physicians and their immediate family members, where failure to submit timely, accurately and completely the required information for all covered payments, transfers of value and ownership or investment interests may result in civil monetary penalties

• analogous state and foreign laws, such as state anti-kickback and false claims laws, which may apply to sales or marketing arrangements and claims involving healthcare items or services reimbursed by non-governmental third-party payors, including private insurers; state laws that require pharmaceutical companies to comply with the pharmaceutical industry’s voluntary compliance guidelines and the relevant compliance guidance promulgated by the federal government or otherwise restrict payments that may be made to healthcare providers; state and foreign laws that require drug manufacturers to report information related to payments and other transfers of value to physicians and other healthcare providers or marketing expenditures; and state and foreign laws governing the privacy and security of health information in certain circumstances, many of which differ from each other in significant ways and often are not preempted by HIPAA, thus complicating compliance efforts

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Further, the Affordable Care Act, among other things, amended the intent requirement of the federal Anti-Kickback Statute and certain criminal statutes governing healthcare fraud. A person or entity no longer needs to have actual knowledge of the statute or specific intent to violate it. In addition, the Affordable Care Act provided that the government may assert that a claim including items or services resulting from a violation of the federal Anti-Kickback Statute constitutes a false or fraudulent claim for purposes of the False Claims Act.

Efforts to ensure that our future business arrangements with third parties will comply with applicable healthcare laws and regulations may involve substantial costs. 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. 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, including, without limitation, damages, fines, imprisonment, exclusion from participation in government healthcare programs, such as Medicare and Medicaid, and the curtailment or restructuring of our operations, which could significantly harm our business. If any of the physicians or other healthcare providers or entities with whom we expect to do business, including our current and future collaborators, if any, are found not to be in compliance with applicable laws, those persons or entities may be subject to criminal, civil or administrative sanctions, including exclusion from participation in government healthcare programs, which could also affect our business.

The impact of recent healthcare reform legislation and other changes in the healthcare industry and healthcare spending on us is currently unknown and may adversely affect our business model.

In the U.S. and some foreign jurisdictions, legislative and regulatory changes and proposed changes regarding the healthcare system could prevent or delay marketing approval of our drug candidates, restrict or regulate post-approval activities and affect our ability to profitably sell any drug candidates for which we obtain marketing approval.

Our revenue prospects could be affected by changes in healthcare spending and policy in the U.S. and abroad. We operate in a highly regulated industry and new laws and judicial decisions, or new interpretations of existing laws or decisions, related to healthcare availability, the method of delivery or payment for healthcare products and services could negatively impact our business, financial condition, results of operations and prospects. There is significant interest in promoting healthcare reform, as evidenced by the enactment in the U.S. of the Affordable Care Act. Among other things, the Affordable Care Act contains provisions that may reduce the profitability of drug products, including, for example, revising the methodology by which rebates owed by manufacturers for covered outpatient drugs under the Medicaid Drug Rebate Program are calculated, extending the Medicaid Drug Rebate Program to utilization of prescriptions of individuals enrolled in Medicaid managed care plans, imposing mandatory discounts for certain Medicare Part D beneficiaries, and subjecting drug manufacturers to payment of an annual fee.

We expect that the Affordable Care Act, 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 approved product. Any reduction in reimbursement from Medicare or other government programs may result in a similar reduction in payments from private payors. The implementation of cost containment measures or other healthcare reforms may prevent us from being able to generate revenue or commercialize our drugs.

It is likely that federal and state legislatures within the U.S. and foreign governments will continue to consider changes to existing healthcare legislation including the Affordable Care Act. It is also possible that the executive branch may take certain steps by executive action which could modify or solidify aspects of the Affordable Care Act. Certain stakeholders are also pursuing litigation challenging certain provisions which, if successful, would have the effect of modifying some or all of the provisions of the Affordable Care Act. We cannot predict the reform initiatives that may be adopted or litigation outcomes 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 any drug products for which we may obtain marketing approval

• our ability to set a price that we believe is fair for our products

• our ability to obtain coverage and reimbursement approval for a product

• our ability to generate revenues and achieve or maintain profitability

• the level of taxes that we are required to pay

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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 have a material adverse effect on our business, financial condition or results of operations.

Our research and development activities and our third-party manufacturers’ and suppliers’ activities involve the controlled storage, use, and disposal of hazardous materials, including the components of our product candidates and other hazardous compounds. We and our manufacturers and suppliers are subject to laws and regulations governing the use, manufacture, storage, handling, and disposal of these hazardous materials. In some cases, these hazardous materials and various wastes resulting from their use are stored at our and our manufacturers’ facilities pending their use and disposal. We cannot eliminate the risk of contamination, which could cause an interruption of our commercialization efforts, research and development efforts and business operations, environmental damage resulting in costly clean-up and liabilities under applicable laws and regulations governing the use, storage, handling, and disposal of these materials and specified waste products. Although we believe that the safety procedures utilized by us and our third-party manufacturers for handling and disposing of these materials generally comply with the standards prescribed by these laws and regulations, we cannot guarantee that this is the case or eliminate the risk of accidental contamination or injury from these materials. In such an event, we may be held liable for any resulting damages and such liability could exceed our resources and state or federal or other applicable authorities may curtail our use of specified materials and/or interrupt our business operations. Furthermore, environmental laws and regulations are complex, change frequently, and have tended to become more stringent. We cannot predict the impact of such changes and cannot be certain of our future compliance. We do not currently carry biological or hazardous waste insurance coverage.

Other Risks Related to Our Business

If we fail to attract and retain key management and scientific personnel, we may be unable to successfully develop or commercialize our product candidates.

Our success as a pharmaceutical company depends on our continued ability to attract, retain and motivate highly qualified management and scientific and clinical personnel. The loss of the services of any of our senior management could delay or prevent obtaining marketing approval or commercialization of our product candidates.

Our 2019 restructuring may have a negative impact on our ability to attract and retain qualified personnel. In order to reduce operating expenses and conserve cash resources following receipt of the Complete Response Letter we received from FDA regarding our NDA for EDSIVO™ for the treatment of vEDS in June 2019, we implemented a corporate restructuring initiative including a reduction of approximately 60% of our full-time workforce of 48 employees and a halt of precommercial activities for EDSIVO™. As of June 30, 2022, we had a workforce of 41 full-time employees, in addition to several consultants or independent contractors, to conduct our planned business operations. If our projections prove to be inaccurate or if we are forced to implement any further workforce reductions, we may not have sufficient staffing to pursue our research and development goals.

We may not be able to attract or retain qualified management and scientific personnel in the future due to the intense competition for a limited number of qualified personnel among pharmaceutical businesses, and other pharmaceutical, biotechnology and other businesses. Our failure to attract, hire, integrate and retain qualified personnel could impair our ability to achieve our business objectives.

We may not be able to win government, academic institution or non-profit contracts or grants, which could affect the timing or continued development of one or more of our product candidates, and ACER-2820 in particular.

From time to time, we may apply for contracts or grants from government agencies, non-profit entities and academic institutions. For example, we are pursuing several financing options, including federally-funded research contracts and grants and other potentially non-dilutive funding sources, to fund our planned ACER-2820 development program for the potential treatment of patients with COVID-19. Such contracts or grants can be highly attractive because they provide capital to fund the ongoing development of our product candidates without diluting our stockholders. However, there is often significant competition for these contracts or grants. Entities offering contracts or grants may have requirements to apply for or to otherwise be eligible for certain contracts or grants that our competitors may be able to satisfy that we cannot. In addition, such entities may make unfavorable decisions as to whether to offer contracts or make grants, to whom the contracts or grants may or will be awarded and the size of the contracts or grants to each awardee. Even if we are able to satisfy the award requirements, there is no guarantee that we will be a successful awardee. Therefore, we may not be able to win any contracts or grants in a timely manner, if at all.

If a successful product liability claim or series of claims is brought against us for uninsured liabilities or in excess of insured liabilities, we could be forced to pay substantial damage awards.

The use of any of our product candidates in clinical trials, and the sale of any approved products, may expose us to product liability claims. We currently maintain product liability insurance coverage in amounts we consider to be reasonable for our stage of

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development. We intend to monitor the amount of coverage we maintain as the size and design of our clinical trials evolve, and if we are successful in obtaining approval to commercialize any of our product candidates, adjust the amount of coverage we maintain accordingly. However, there is no assurance that such insurance coverage will fully protect us against some or all of the claims to which we might become subject. We might not be able to maintain adequate insurance coverage at a reasonable cost or in sufficient amounts or scope to protect us against potential losses. In the event a claim is brought against us, we might be required to pay legal and other expenses to defend the claim, as well as uncovered damages awards resulting from a claim brought successfully against us.

Furthermore, whether or not we are ultimately successful in defending any such claims, we might be required to direct financial and managerial resources to such defense and adverse publicity could result, all of which could harm our business.

Our employees, independent contractors, investigators, contract research organizations, consultants, collaborators and vendors may engage in misconduct or other improper activities, including noncompliance with regulatory standards and requirements and insider trading.

We are exposed to the risk that our employees and other third parties may engage in fraudulent conduct or other illegal activity. Misconduct by employees and other third parties could include intentional, reckless and/or negligent conduct or disclosure of unauthorized activities to us that violate FDA regulations, including those laws requiring the reporting of true, complete and accurate information to FDA, manufacturing standards, federal and state healthcare fraud and abuse laws and regulations, or laws that require the reporting of financial information or data accurately. In particular, sales, marketing and business arrangements in the healthcare industry are subject to extensive laws intended to prevent fraud, kickbacks, self-dealing and other abusive practices. These laws and regulations may restrict or prohibit a wide range of pricing, discounting, marketing and promotion, sales commission, customer incentive programs and other business arrangements. Activities subject to these laws also involve the improper use of information obtained in the course of clinical trials, which could result in regulatory sanctions and serious harm to our reputation. It is not always possible to identify and deter employee and other third-party misconduct, 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. If any such actions are instituted against us, and we are not successful in defending ourselves or asserting our rights, those actions could have a significant impact on our business, including the imposition of significant civil, criminal and administrative penalties, damages, monetary fines, disgorgement, possible exclusion from participation in Medicare, Medicaid and other federal healthcare programs, contractual damages, reputational harm, diminished profits and future earnings and curtailment or restructuring of our operations, any of which could adversely affect our ability to operate.

Our internal computer systems, or those of our development collaborators, third-party clinical research organizations or other contractors or consultants, may fail or suffer cybersecurity or other security breaches, which could result in a material disruption of our product development programs.

Despite the implementation of security measures, our internal computer systems and those of our current and any future CROs and other contractors, consultants and collaborators are vulnerable to cybersecurity breaches and damage from computer viruses, unauthorized access, natural disasters, terrorism, war and telecommunication and electrical failures. In addition, there has recently been a significant increase in ransomware and cybersecurity attacks related to the ongoing conflict between Russia and Ukraine, which could lead to interruptions, delays, or loss of critical data if we or one of our partners is the subject of such an attack. While we have not experienced any such material system failure, accident or security breach to date, if such an event were to occur and cause interruptions in our operations, it could result in a material disruption of our development programs and our business operations. For example, the loss of clinical trial data from completed or future clinical trials could result in delays in our marketing approval efforts and significantly increase our costs to recover or reproduce the data. Likewise, we intend to rely on third parties to manufacture our product candidates and conduct clinical trials, and similar events relating to their computer systems could also have a material adverse effect on our business. To the extent that any disruption or cybersecurity or other security breach were to result in a loss of, or damage to, our data or applications, or inappropriate disclosure of confidential or proprietary information, we could incur liability, the further development and commercialization of our product candidates could be delayed, and our reputation could be harmed. In addition, there are known cyberattacks against pharmaceutical companies engaged in development of therapeutic or vaccine products addressing COVID-19. Our ACER-2820 program is one such program that could attract the attention of cyber attackers.

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Risks Related to Commercialization of Our Product Candidates

Even if we obtain the required regulatory approvals in the U.S. and other territories, the commercial success of our product candidates will depend on, among other factors, market awareness and acceptance of our product candidates.

Even if we obtain marketing approval for our current product candidates or any other product candidates that we may develop or acquire in the future, the products may not gain market acceptance among physicians, key opinion leaders, healthcare payors, patients and the medical community. Market acceptance of any approved products depends on a number of factors, including:

• the timing of market introduction

• the efficacy and safety of the product, as demonstrated in clinical trials

• the clinical indications for which the product is approved and the label approved by regulatory authorities for use with the product, including any precautions, warnings or contraindications that may be required on the label

• acceptance by physicians, key opinion leaders and patients of the product as a safe and effective treatment

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

• the availability of coverage and adequate reimbursement and pricing by third-party payors and government authorities

• the number and clinical profile of competing products

• the growth of drug markets in our various indications

• relative convenience and ease of administration

• marketing and distribution support

• the prevalence and severity of adverse side effects

• the effectiveness of our sales and marketing efforts

Market acceptance is critical to our ability to generate revenue. Any product candidate, if approved and commercialized, may be accepted in only limited capacities or not at all. If any approved products are not accepted by the market to the extent that we expect, we may not be able to generate revenue and our business would suffer.

If the market opportunities for our product candidates to treat rare diseases are smaller than we believe they are, then our revenues may be adversely affected and our business may suffer.

The diseases that some of our current and future product candidates are being developed to address are rare. Our projections of both the number of people who have these diseases, as well as the subset of people with these diseases who have the potential to benefit from treatment with our product candidates, and our assumptions relating to pricing are based on estimates. Given the small number of patients who have some of the diseases that we are targeting, our eligible patient population and pricing estimates may differ significantly from the actual market addressable by our product candidates.

Currently, most reported estimates of the prevalence of UCDs, MSUD, and vEDS are based on studies of small subsets of the population of specific geographic areas, which are then extrapolated to estimate the prevalence of the diseases in the broader world population. It is difficult to precisely measure the incidence or prevalence of vEDS in any population. Studies estimate the prevalence of vEDS as ranging from approximately 1 in 90,000 to 1 in 250,000. In 2017, we commissioned a patient-finder study that phenotypically identified 4,169 vEDS patients in the U.S. from an analysis of a commercially available patient claims database, with data of approximately 190 million unique patient lives. Based on that information, we estimate the prevalence of phenotypically-defined vEDS in the U.S. could be greater than 1 in 45,000.

It is estimated that UCDs, MSUD, and vEDS collectively impact approximately 7,000 patients in the U.S. As new studies are performed the estimated prevalence of these diseases may change. The number of patients may turn out to be lower than expected. There can be no assurance that the prevalence of UCDs, MSUD, or vEDS in the study populations accurately reflect the prevalence of these diseases in the broader world population. If our estimates of the prevalence of UCDs, MSUD, or vEDS or of the number of patients who may benefit from treatment with ACER-001 or EDSIVO^TM prove to be incorrect, the market opportunities for our product candidates may be smaller than we believe they are, our prospects for generating revenue may be adversely affected and our business may suffer. Likewise, the potentially addressable patient population for each of these product candidates may be limited or may not be amenable to treatment with our product candidates, and new patients may become increasingly difficult to identify or gain access to, which would adversely affect our business, financial condition, results of operations and prospects.

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We currently have limited marketing and sales experience. If we are unable to establish sales and marketing capabilities or enter into agreements with third parties to market and sell our product candidates, we may be unable to generate any product sales revenue.

We have never commercialized a product candidate and, although precommercial activities had been conducted for ACER-001 and EDSIVO^TM prior to our receipt of FDA’s Complete Response Letters with respect to each of these development programs, we currently do not have marketing, sales or distribution capabilities for any marketed products. In order to commercialize any of our products that receive marketing approval, we would have to build marketing, sales, medical affairs, distribution, managerial and other non-technical capabilities or make arrangements with third parties to perform these services, and we may not be successful in doing so. In the event of successful development of our product candidates, if we elect to build a targeted specialty sales force, such an effort would be expensive and time consuming. Any failure or delay in the development of our internal sales, marketing and distribution capabilities would adversely impact the commercialization of these products. We may choose to collaborate with third parties that have their own sales forces and established distribution systems, in lieu of or to augment any sales force and distribution systems we may create. If we are unable to enter into collaborations with third parties for the commercialization of approved product candidates, if any, on acceptable terms or at all, or if any such collaborator does not devote sufficient resources to the commercialization of our product or otherwise fails in commercialization efforts, we may not be able to successfully commercialize our product candidates if we receive marketing approval. If we are not successful in commercializing our product candidates, either on our own or through collaborations with one or more third parties, our potential future revenue will be materially and adversely impacted.

If we fail to enter into strategic relationships or collaborations, our business, financial condition, commercialization prospects and results of operations may be materially adversely affected.

Our product development programs and the potential commercialization of our current product candidates will require substantial additional cash to fund expenses. Therefore, in addition to financing the development of our product candidates through additional equity financings or through debt financings, we may decide to enter into collaborations with pharmaceutical or biopharmaceutical companies for the development and potential commercialization of our product candidates.

We face significant competition in seeking appropriate collaborators. Collaborations are complex and time-consuming to negotiate and document. We may also be restricted under existing and future collaboration agreements from entering into agreements on certain terms with other potential collaborators. We may not be able to negotiate collaborations on acceptable terms, or at all. If that were to occur, we may have to curtail the development of a particular product, reduce or delay one or more of our development programs, delay our potential commercialization or reduce the scope of our 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 will not be able to bring our product candidates to market and generate product revenue. If we do enter into a collaboration agreement, it could be subject to the following risks, each of which may materially harm our business, commercialization prospects and financial condition:

• we may not be able to control the amount or timing of resources that the collaborator devotes to the product development program

• the collaborator may experience financial difficulties and thus not commit sufficient financial resources to the product development program

• we may be required to relinquish important rights such as marketing, distribution and intellectual property rights

• a collaborator could move forward with a competing product developed either independently or in collaboration with third parties, including our competitors

• business combinations or significant changes in a collaborator’s business strategy may adversely affect a collaborator’s willingness to complete its obligations under any arrangement

Coverage and reimbursement may be limited or unavailable in certain market segments for our product candidates, which could make it difficult for us to sell our products profitably.

There is significant uncertainty related to third-party coverage and reimbursement of newly approved pharmaceuticals. Market acceptance and sales of any approved product candidates will depend significantly on the availability of coverage and adequate reimbursement from third-party payors and may be affected by existing and future healthcare reform measures. Patients who are prescribed treatments for their conditions and providers performing the prescribed services generally rely on third-party payors to reimburse all or part of the associated healthcare costs. Government authorities and third-party payors, such as private health insurers, health maintenance organizations, and government payors like Medicare and Medicaid, decide which drugs they will pay for and establish reimbursement levels. Increasingly, third-party payors are requiring that drug companies provide them with predetermined discounts from list prices and are challenging the prices charged for drugs and products. Coverage and reimbursement may not be available for any product that we commercialize and, even if coverage is provided, the level of reimbursement may not be satisfactory.

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Inadequate reimbursement levels may adversely affect the demand for, or the price of, any drug candidate for which we obtain marketing approval.

Reimbursement by a third-party payor may depend upon a number of factors, including the third-party payor’s determination that use of a product is, among other things:

• a covered benefit under its health plan

• safe, effective and medically necessary

• appropriate for the specific patient

• cost-effective

• neither experimental nor investigational

Obtaining coverage and adequate 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 conduct expensive pharmacoeconomic studies and provide supporting scientific, clinical and cost-effectiveness data for the use of our products to the payor. We may not be able to provide data sufficient to gain acceptance with respect to coverage and adequate reimbursement. In addition to examining the medical necessity and cost-effectiveness of new products, coverage may be limited to specific drug products on an approved list, or formulary, which might not include all of the FDA-approved drug products for a particular indication. There may also be formulary placements that result in lower reimbursement levels and higher cost-sharing borne by patients, any of which could have an adverse effect on our revenues and profits. Moreover, a third-party payor’s decision to provide coverage for a drug product does not imply that an adequate reimbursement rate will be approved. Adequate third-party reimbursement may not be available to enable us to maintain price levels sufficient to realize an appropriate return on our investment in product development. Additionally, coverage and reimbursement for drug products can differ significantly from payor to payor. One third-party payor’s decision to cover a particular drug product does not ensure that other payors will also provide coverage for the drug product, or even if coverage is available, establish an adequate reimbursement rate. In addition, pricing of orphan and rare disease drug treatments is under increased pressure given the overall healthcare cost climate generally, and pricing of pharmaceutical products specifically.

We cannot be sure that coverage or adequate reimbursement will be available for any of our product candidates. Also, we cannot be sure that reimbursement amounts will not reduce the demand for, or the price of, our products. If reimbursement is not available or is available only to limited levels, we may not be able to commercialize certain of our products. In the U.S., third-party payors are increasingly attempting to contain healthcare costs by limiting both coverage and the level of reimbursement of new drugs. Third-party payors are increasingly challenging the prices charged for medical products and services, examining the medical necessity and reviewing the cost-effectiveness of drug products and medical services and questioning safety and efficacy. As a result, significant uncertainty exists as to whether and how much third-party payors will reimburse patients for their use of newly approved drugs, which in turn will put pressure on the pricing of drugs. Additionally, emphasis on managed care in the U.S. has increased and we expect will continue to increase the pressure on drug pricing. If third-party payors do not consider our products to be cost-effective compared to other available therapies, they may not cover the products for which we receive FDA approval or, if they do, the level of payment may not be sufficient to allow us to sell our products at a profit.

Coverage policies, third-party reimbursement rates and drug pricing regulation (including indirect techniques of pricing pressure, such as allowing reimportation from markets outside the U.S.) may change at any time, and there is the potential for significant movement in these areas in the foreseeable future. Even if favorable coverage and reimbursement status is attained for one or more products for which we receive marketing approval, less favorable coverage policies and reimbursement rates may be implemented in the future.

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

The life sciences industry is highly competitive, and we face significant competition from many pharmaceutical, biopharmaceutical and biotechnology companies that are generally developing and marketing therapeutic products. Such competition may include large pharmaceutical and biotechnology companies, specialty pharmaceutical and generic companies and medical technology companies. Our future success depends on our ability to demonstrate and maintain a competitive advantage with respect to the design, development and commercialization of our product candidates for the treatment of orphan and ultra-orphan diseases for which there is a small patient population in the U.S. A drug designated an Orphan Drug may receive up to seven years of exclusive marketing in the U.S. for that indication. Our objective is to design, develop and commercialize product candidates by repurposing or reformulating existing drugs, generally for orphan diseases, with significant unmet medical needs.

Many of our potential competitors have significantly greater financial, manufacturing, marketing, development, technical and human resources than we do. Large pharmaceutical and biotechnology companies, in particular, have extensive experience in clinical testing, obtaining regulatory approvals, recruiting patients and in manufacturing clinical products. These companies also have

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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 companies may also invest heavily to accelerate discovery and development of compounds that could make the product candidates that we develop obsolete. As a result of all of these factors, the obtaining of Orphan Drug designation for our product candidates to treat rare diseases is highly desirable to our viability since our competitors may, among other things:

• have greater name and brand recognition, financial and human resources

• develop and commercialize products that are safer, more effective, less expensive, or more convenient or easier to administer

• obtain quicker marketing approval

• establish superior proprietary positions

• have access to more manufacturing capacity as well as to more cost-effective manufacturing capacity

• implement more effective approaches to sales and marketing

• form more advantageous strategic alliances

Should any of these events occur, our business, financial condition, results of operations, and prospects could be materially adversely affected. If we are not able to compete effectively against potential competitors, our business will not grow and our financial condition and operations will suffer.

We believe that our ability to successfully compete in the rare disease category will depend in part on our ability to obtain Orphan Drug designation for our product candidates to treat rare diseases as well as:

• our ability to design and successfully execute appropriate clinical trials

• our ability to recruit and enroll patients for our clinical trials

• the results of our clinical trials and the efficacy and safety of our product candidates

• the speed at which we develop our product candidates

• achieving and maintaining compliance with regulatory requirements applicable to our business

• the timing and scope of regulatory approvals, including labeling

• adequate levels of reimbursement under private and governmental health insurance plans, including Medicare and Medicaid

• our ability to protect intellectual property rights related to our product candidates

• our ability to commercialize and market any of our product candidates that may receive marketing approval

• our ability to manufacture and sell commercial quantities of any approved product candidates to the market

• acceptance of our product candidates by physicians, other healthcare providers and patients

• the cost of treatment in relation to alternative therapies

If our competitors are able to obtain Orphan Drug exclusivity for their products that are the same drug as our product candidates, we may not be able to have competing products approved by the applicable regulatory authority for a significant period of time or benefit from that exclusivity.

We have Orphan Drug exclusivity designation in the U.S. for ACER-001 for MSUD and EDSIVO^TM for vEDS. We expect to seek Orphan Drug exclusivity from the EMA for ACER-001 for MSUD; however, there can be no assurance that we will be successful. If we are unable to maintain our current Orphan Drug exclusivity or are unable to secure orphan status in Europe for ACER-001 for MSUD, it may have a material negative effect on our business.

Generally, if a product with an Orphan Drug designation subsequently receives the first marketing approval for the indication for which it has such designation, that product is entitled to a period of marketing exclusivity, which precludes the applicable regulatory authority from approving another marketing application for the same drug for the same indication for that time period. The applicable period is seven years in the U.S. and ten years in the European Union. The exclusivity period in the European Union can be reduced to six years if the product no longer meets the criteria for Orphan Drug designation or if its commercialization is sufficiently profitable so that market exclusivity is no longer justified. Orphan Drug exclusivity may be lost if FDA or the EMA determines that the request for designation was materially defective or if the manufacturer is unable to ensure sufficient quantity of the product to meet

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the needs of patients with the rare disease or condition. Maintaining and/or obtaining Orphan Drug exclusivity for ACER-001 and EDSIVO^TM may be important to the product candidate’s success. Even if we obtain Orphan Drug exclusivity, we may not be able to maintain it. For example, if a competitive product that treats the same disease as our product candidate is shown to be clinically superior to our product candidate, any Orphan Drug exclusivity we have obtained will not block the approval of such competitive product and we may effectively lose what had previously been Orphan Drug exclusivity. Orphan Drug exclusivity for ACER-001 or EDSIVO^TM also will not bar FDA from approving another celiprolol drug product or a sodium phenylbutyrate (“NaPB”) product, for another indication. In the U.S., reforms to the Orphan Drug Act, if enacted, could also materially affect our ability to maintain Orphan Drug exclusivity for ACER-001 for MSUD and EDSIVO^TM for vEDS.

Price controls, importation of drug products from outside the U.S., or other rules may be imposed in domestic or foreign markets, which may adversely affect our future profitability.

The U.S. government, state legislatures, and foreign governments have shown significant interest in implementing cost-containment programs to limit the growth of government-paid healthcare costs and drug prices in general, including for therapies for rare diseases. These measures include price controls, transparency requirements triggered by the introduction of new high-cost drugs into the market, drug re-importation, restrictions on reimbursement and requirements for substitution of generic products for branded prescription drugs. Some laws and regulations have already been enacted in these areas, and additional measures have been introduced or are under consideration at both the federal and state levels. Additionally, legislation that affects reimbursement for drugs with small patient populations could be adopted, limiting payments for pharmaceuticals such as our product candidates, which could adversely affect our potential future net revenue and results. Adoption of such controls and measures and tightening of restrictive policies in jurisdictions with existing controls and measures could limit payments for pharmaceuticals such as our drug product candidates and could adversely affect our net revenue and results.

In some countries, particularly member states of the European Union, the pricing of prescription drugs is subject to governmental control. In these countries, pricing negotiations with governmental authorities can take considerable 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 European Union member states and parallel distribution, or arbitrage between low-priced and high-priced member states, can further reduce prices. There is also the potential for a reference pricing system using drug prices from other countries, sometimes referred to as “most favored nation” treatment. In some countries, we may be required to conduct a clinical trial or other studies that compare the cost-effectiveness of our product candidates to other available therapies in order to obtain or maintain reimbursement or pricing approval. Publication of discounts by third-party payors or authorities may lead to further pressure on the prices or reimbursement levels within the country of publication and other countries. If reimbursement of our products is unavailable or limited in scope or amount, or if pricing is set at unsatisfactory levels, our business could be adversely affected.

Rapid technological change could make our product candidates obsolete.

Pharmaceutical technologies have undergone rapid and significant change, and we expect that they will continue to do so. As a result, there is significant risk that our product candidates may be rendered obsolete or uneconomical by new discoveries before we recover all or any expenses incurred in connection with their development. If any of our product candidates are rendered obsolete by advancements in pharmaceutical technologies, our business will suffer.

Government controls and healthcare reform measures could adversely affect our business.

The business and financial condition of pharmaceutical and biotechnology companies are affected by the efforts of governmental and third-party payors to contain or reduce the costs of healthcare. In the U.S. and in foreign jurisdictions, there have been, and we expect that there will continue to be, a number of legislative and regulatory proposals aimed at changing the healthcare system. For example, in some foreign countries, particularly in Europe, the pricing of prescription pharmaceuticals is subject to governmental control. In these countries, pricing negotiations with governmental authorities can take considerable time after the receipt of marketing approval for a product candidate. To obtain reimbursement or pricing approval in some countries, we may be required to conduct additional clinical trials that compare the cost-effectiveness of any product candidate to other available therapies. If reimbursement of any product candidate is unavailable or limited in scope or amount in a particular country, or if pricing is set at unsatisfactory levels, we may be unable to achieve or sustain profitability in such country. In the U.S., the Medicare Prescription Drug, Improvement, and Modernization Act of 2003 (“MMA”) changed the way Medicare covers and pays for pharmaceutical products. The legislation established Medicare Part D, which expanded Medicare coverage for outpatient prescription drug purchases by the elderly but provided authority for limiting the number of drugs that will be covered in any therapeutic class. The MMA also introduced a new reimbursement methodology based on average sales prices for physician-administered drugs. Any negotiated prices for any product candidate covered by a Part D prescription drug plan will likely be lower than the prices that might otherwise be obtained outside of the Medicare Part D prescription drug plan. Moreover, while Medicare Part D applies only to drug benefits for Medicare

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beneficiaries, private payors often follow Medicare coverage policy and payment limitations in setting their own payment rates. Any reduction in payment under Medicare Part D may result in a similar reduction in payments from non-governmental payors.

The U.S. and several other jurisdictions are considering, or have already enacted, a number of legislative and regulatory proposals to change the healthcare system in ways that could affect our ability to sell any product candidate. Among policy-makers and payors in the U.S. and elsewhere, there is significant interest in promoting changes in healthcare systems with the stated goals of containing healthcare costs, improving quality and/or expanding access to healthcare. In the U.S., the pharmaceutical industry has been a particular focus of these efforts and has been significantly affected by major legislative initiatives and executive actions. There have been, and likely will continue to be, legislative and executive regulatory proposals at the federal and state levels directed at broadening the availability of healthcare and containing or lowering the cost of healthcare. We cannot predict the initiatives that may be adopted in the future. 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 any product candidate; the ability to set a price that we believe is fair for any product candidate; our ability to generate revenues and achieve or maintain profitability; the level of taxes that we are required to pay; and the availability of capital.

Risks Related to Third Parties

We rely on third-party suppliers and other third parties for manufacture of our product candidates and our dependence on these third parties may impair or delay the advancement of our research and development programs and the development of our product candidates.

We do not currently own or operate manufacturing facilities for clinical or commercial production of our product candidates. We lack the resources and the capability to manufacture any of our product candidates on a clinical or commercial scale. Instead, we rely on, and expect to continue to rely on, third parties for the supply of raw materials and manufacture of drug supplies necessary to conduct our preclinical studies and clinical trials. Our reliance on third parties may expose us to more risk than if we were to manufacture our current product candidates or other products ourselves. Delays in production by third parties could delay our clinical trials or have an adverse impact on any commercial activities. In addition, the fact that we are dependent on third parties for the manufacture of and formulation of our product candidates means that we are subject to the risk that the products may have manufacturing defects that we have limited ability to prevent or control. Although we oversee these activities to ensure compliance with our quality standards, budgets and timelines, we have had and will continue to have less control over the manufacturing of our product candidates than potentially would be the case if we were to manufacture our product candidates. Further, due to the ongoing impact of the COVID-19 pandemic, new pandemic lockdowns in China, global supply chain issues, Russia’s invasion of Ukraine, or other reasons, the third parties we deal with could experience increased costs in transportation, logistics, raw materials and other costs, may have difficulty sourcing raw materials, may have staffing difficulties, might undergo changes in priorities or may become financially distressed, which would adversely affect the manufacturing and production of our product candidates. In addition, a third party could be acquired by, or enter into an exclusive arrangement with, one of our competitors, which would adversely affect our ability to access the formulations we require.

The facilities used by our current contract manufacturers and any future manufacturers to manufacture our product candidates must be inspected by FDA after we submit our NDA for a product candidate. For example, the Complete Response Letter we received for ACER-001 identifies satisfactory inspection of our packaging and labeling contract vendor as a necessary prerequisite to any approval for marketing ACER-001. We do not control the manufacturing process of, and are completely dependent on, our contract manufacturers for compliance with the regulatory requirements, known as cGMPs, for manufacture of both active drug substances and finished drug products. If our contract manufacturers cannot successfully manufacture material that conforms to our specifications and the strict regulatory requirements of FDA or others, FDA may refuse to approve our NDA. If FDA or a comparable foreign regulatory authority does not approve our NDA because of concerns about the manufacture of our product candidates or if significant manufacturing issues arise in the future, we may need to find alternative manufacturing facilities, which would significantly impact our ability to develop our product candidates, to obtain marketing approval of our NDA or to continue to market our product candidates, if approved. Although we are ultimately responsible for ensuring compliance with these regulatory requirements, we do not have day-to-day control over a contract manufacturing organization (“CMO”) or other third-party manufacturer’s compliance with applicable laws and regulations, including cGMPs and other laws and regulations, such as those related to environmental health and safety matters. Any failure to achieve and maintain compliance with these laws, regulations and standards could subject us to the risk that we may have to suspend the manufacturing of our product candidates or that obtained approvals could be revoked, which would adversely affect our business and reputation. In addition, third-party contractors, such as our CMOs, may elect not to continue to work with us due to factors beyond our control. Although we have contracts in place, they may also refuse to work with us because of their own financial difficulties, business priorities or other reasons, at a time that is costly or otherwise inconvenient for us. If we were unable to find adequate replacement or another acceptable solution in time, our clinical trials could be delayed or our commercial activities could be harmed.

Problems with the quality of the work of third parties may lead us to seek to terminate our working relationships and use alternative service providers. However, making this change may be costly and may delay clinical trials. In addition, it may be very

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challenging, and in some cases impossible, to find replacement service providers that can develop and manufacture our drug candidates in an acceptable manner and at an acceptable cost and on a timely basis. The sale of products containing any defects or any delays in the supply of necessary services could adversely affect our business, financial condition, results of operations, and prospects.

Growth in the costs and expenses of components or raw materials may also adversely affect our business, financial condition, results of operations, and prospects. Supply sources could be interrupted from time to time and, if interrupted, supplies may not be resumed (whether in part or in whole) within a reasonable timeframe and at an acceptable cost or at all.

We plan to rely on third parties to conduct clinical trials for our product candidates. If these third parties do not successfully carry out their contractual duties or meet expected deadlines, it may cause delays in commencing and completing clinical trials of our product candidates or we may be unable to obtain marketing approval for or commercialize our product candidates.

Clinical trials must meet applicable FDA and foreign regulatory requirements. We do not have the ability to independently conduct clinical trials for any of our product candidates. We have and will continue to rely on third parties, such as CROs, medical institutions, clinical investigators and contract laboratories, to conduct all of our clinical trials of our product candidates; however, we remain responsible for ensuring that each of our clinical trials is conducted in accordance with our investigational plan and protocol. Moreover, FDA and other foreign regulatory authorities require us to comply with IND and human subject protection regulations and current good clinical practice standards, commonly referred to as GCPs, for conducting, monitoring, recording, and reporting the results of clinical trials to ensure that the data and results are scientifically credible and accurate and that the trial subjects are adequately informed of the potential risks of participating in clinical trials. Our reliance on third parties does not relieve us of these responsibilities and requirements. Regulatory authorities enforce these GCPs through periodic inspections of trial sponsors, principal investigators and trial sites. If we or any of our third-party contractors fail to comply with applicable GCPs, the clinical data generated in our clinical trials may be deemed unreliable and FDA or comparable foreign regulatory authorities may require us to perform additional clinical trials before approving our marketing applications. There is no assurance that upon inspection by a given regulatory authority, such regulatory authority will determine that any of our clinical trials comply with GCPs. Our failure to comply with these regulations may require us to repeat clinical trials, which would delay the marketing approval process.

There are significant requirements imposed on us and on clinical investigators who conduct clinical trials that we sponsor. Although we are responsible for selecting qualified CROs or clinical investigators, providing them with the information they need to conduct the clinical trials properly, ensuring proper monitoring of the clinical trials, and ensuring that the clinical trials are conducted in accordance with the general investigational plan and protocols contained in the IND, we cannot ensure that the CROs or clinical investigators will maintain compliance with all regulatory requirements at all times. The pharmaceutical industry has experienced cases where clinical investigators have been found to incorrectly record data, omit data, or even falsify data. We cannot ensure that the CROs or clinical investigators in our trials will not make mistakes or otherwise compromise the integrity or validity of data, any of which would have a significant negative effect on our ability to obtain marketing approval, our business, and our financial condition.

We or the third parties we rely on may encounter problems in clinical trials that may cause us or FDA or foreign regulatory agencies to delay, suspend or terminate our clinical trials at any phase. These problems could include the possibility that we may not be able to manufacture sufficient quantities of materials for use in our clinical trials, conduct clinical trials at our preferred sites, enroll a sufficient number of patients for our clinical trials at one or more sites, or begin or successfully complete clinical trials in a timely fashion, if at all. Furthermore, we, FDA or foreign regulatory agencies may suspend clinical trials of our product candidates at any time if we or they believe the subjects participating in the trials are being exposed to unacceptable health risks, whether as a result of adverse events occurring in our trials or otherwise, or if we or they find deficiencies in the clinical trial process or conduct of the investigation.

The FDA and foreign regulatory agencies could also require additional clinical trials before or after granting of marketing approval for any products, which would result in increased costs and significant delays in the development and commercialization of such products and could result in the withdrawal of such products from the market after obtaining marketing approval. Our failure to adequately demonstrate the safety and efficacy of a product candidate in clinical development could delay or prevent obtaining marketing approval of the product candidate and, after obtaining marketing approval, data from post-approval studies could result in the product being withdrawn from the market, either of which would likely have a material adverse effect on our business.

In addition, the above risks are compounded by uncertainties related to the ongoing COVID-19 pandemic, which could affect our CROs’ businesses internally (for example, maintaining staffing levels and ongoing financial viability), as well as their ability to perform their obligations to us under our agreements (such as recruitment of subjects for clinical trials in an increasingly uncertain and competitive business environment).

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Risks Related to Our Intellectual Property

Our proprietary rights may not adequately protect our technologies and product candidates.

Our commercial success will depend in part on our ability to obtain patents and protect our existing patent position as well as our ability to maintain adequate protection of other intellectual property for our technologies, product candidates, and any future products in the U.S. and other countries. If we do not adequately protect our intellectual property, competitors may be able to use our technologies and erode or negate any competitive advantage we may have, which could harm our business and ability to achieve profitability. The laws of some foreign countries do not protect our proprietary rights to the same extent or in the same manner as U.S. laws, and we may encounter significant problems in protecting and defending our proprietary rights in these countries. We will be able to protect our proprietary rights from unauthorized use by third parties only to the extent that our proprietary technologies, product candidates and any future products are covered by valid and enforceable patents or are effectively maintained as trade secrets.

We apply for patents covering both our technologies and product candidates, as we deem appropriate. However, we may fail to apply for patents on important technologies or product candidates in a timely fashion, or at all. Our existing patents and any future patents we obtain may not be sufficiently broad to prevent others from practicing our technologies or from developing competing products and technologies. We cannot be certain that our patent applications will be approved or that any patents issued will adequately protect our intellectual property.

While we are responsible for and typically have control over the filing and prosecuting of patent applications and maintaining patents which cover making, using or selling ACER-001, ACER-801, EDSIVO^TM, or ACER-2820, we may lose any such rights if we decide to allow any licensed patent to lapse. If we fail to appropriately prosecute and maintain patent protection for any of our product candidates, our ability to develop and commercialize those product candidates may be adversely affected and we may not be able to prevent competitors from making, using and selling competing products.

Moreover, the patent positions of pharmaceutical companies are highly uncertain and involve complex legal and factual questions for which important legal principles are evolving and remain unresolved. As a result, the validity and enforceability of patents cannot be predicted with certainty. In addition, we do not know whether:

• we or our licensors were the first to make the inventions covered by each of our issued patents and pending patent applications

• we or our licensors were the first to file patent applications for these inventions

• any of the patents that cover our product candidates will be eligible to be listed in FDA’s compendium of “Approved Drug Products with Therapeutic Equivalence Evaluation,” sometimes referred to as FDA’s Orange Book

• others will independently develop similar or alternative technologies or duplicate any of our technologies

• any of our or our licensors’ pending patent applications will result in issued patents

• any of our or our licensors’ patents will be valid or enforceable

• any patents issued to us or our licensors and collaborators will provide us with any competitive advantages, or will be challenged by third parties

• we will develop additional proprietary technologies that are patentable

• the U.S. government will exercise any of its statutory rights to our intellectual property that was developed with government funding

• our business may infringe the patents or other proprietary rights of others

The actual protection afforded by a patent varies based on products or processes, from country to country, and depends upon many factors, including the type of patent, the scope of its coverage, the availability of regulatory related extensions, the availability of legal remedies in a particular country, the validity and enforceability of the patents and our financial ability to enforce our patents and other intellectual property. Our ability to maintain and solidify our proprietary position for our products will depend on our success in obtaining effective claims and enforcing those claims once granted. Our issued patents and those that may issue in the future, or those licensed to us, may be challenged, narrowed, invalidated or circumvented, and the rights granted under any issued patents may not provide us with proprietary protection or competitive advantages against competitors with similar products. Due to the extensive amount of time required for the development, testing and regulatory review of a potential product, it is possible that, before any of our product candidates can be commercialized, any related patent may expire or remain in force for only a short period following commercialization, thereby reducing any advantage of the patent.

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We may also rely on trade secrets to protect some of our technology, especially where we do not believe patent protection is appropriate or obtainable. However, trade secrets are difficult to maintain. While we use reasonable efforts to protect our trade secrets, we or any of our collaborators’ employees, consultants, contractors or scientific and other advisors may unintentionally or willfully disclose our proprietary information to competitors and we may not have adequate remedies in respect of that disclosure. Enforcement of claims that a third party has illegally obtained and is using trade secrets is expensive, time consuming and uncertain. In addition, foreign courts are sometimes less willing than U.S. courts to protect trade secrets. If our competitors independently develop equivalent knowledge, methods and know-how, we would not be able to assert our trade secrets against them and our business could be harmed.

We are a party to license or similar agreements under which we license intellectual property, data, and/or receive commercialization rights relating to ACER-001, ACER-801, EDSIVO^TM, and ACER-2820. If we fail to comply with obligations in such agreements or otherwise experience disruptions to our business relationships with our licensors, we could lose license rights that are important to our business; any termination of such agreements would adversely affect our business.

In April 2014, we entered into an agreement with Baylor College of Medicine pursuant to which we obtained an exclusive worldwide license to develop and commercialize NaPB (ACER-001) for treatment of MSUD. In August 2016, we entered into an agreement with Assistance Publique—Hôpitaux de Paris, Hôpital Européen Georges Pompidou (“AP-HP”), pursuant to which we obtained an exclusive worldwide right to access and use data from the Ong trial, which we used to support an NDA filing for EDSIVO^TM for the treatment of vEDS. In September 2018, we entered into an additional agreement with AP-HP pursuant to which we obtained the exclusive worldwide intellectual property rights to three European patent applications relating to certain uses of celiprolol including (i) the optimal dose of celiprolol in treating vEDS patients, (ii) the use of celiprolol during pregnancy and (iii) the use of celiprolol to treat kyphoscoliotic Ehlers-Danlos syndrome (type VI). In December 2018, we entered into an exclusive license agreement with Sanofi granting us worldwide rights to ACER-801, a clinical-stage, selective, non-peptide tachykinin NK3 receptor antagonist. Under each license agreement, we are subject to commercialization and development diligence obligations, royalty payments and other obligations. If we fail to comply with any of these obligations or otherwise breach any of these license agreements, the licensor may have the right to terminate the license in whole or in part or to terminate the exclusive nature of the license. The loss of the licenses granted to us under our agreements with these licensors or the rights provided therein would prevent us from developing, manufacturing or marketing products covered by the license or subject to supply commitments, and could materially harm our business, financial condition, results of operations and prospects.

We may not be able to protect our intellectual property rights throughout the world.

Filing, prosecuting and defending patents on product candidates in all countries throughout the world would be prohibitively expensive, and our intellectual property rights in some countries outside the U.S. can be less extensive than those in the U.S. In addition, the laws of some foreign countries do not protect intellectual property rights to the same extent as federal and state laws in the U.S. For example, many foreign countries have compulsory licensing laws under which a patent owner must grant licenses to third parties. Consequently, we may not be able to prevent third parties from practicing our inventions in all countries outside the U.S., or from selling or importing products made using our inventions in and into the U.S. or other jurisdictions. Competitors may use our technologies in jurisdictions where we have not obtained patent protection to develop their own products and further, may export otherwise infringing products to territories where we have patent protection, but enforcement rights are not as strong as those in the U.S. These products may compete with our product candidates in jurisdictions where we do not have any issued patents and our patent claims or other intellectual rights may not be effective or sufficient to prevent them from so competing.

Many companies have encountered significant problems in protecting and defending intellectual property rights in foreign jurisdictions. The legal systems of certain countries do not favor the enforcement of patents and other intellectual property protection, which could make it difficult for us to stop the infringement of our patents generally. Proceedings to enforce our patent rights in foreign jurisdictions 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.

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The patent protection for our product candidates may expire before we are able to maximize their commercial value, which may subject us to increased competition and reduce or eliminate our opportunity to generate product revenue.

The patents for our product candidates have varying expiration dates and, if these patents expire, we may be subject to increased competition and we may not be able to recover our development costs or market any of our approved products profitably. In some of the larger potential market territories, such as the U.S. and Europe, patent term extension or restoration may be available to compensate for time taken during aspects of the product’s development and regulatory review. For example, depending on the timing, duration and specifics of FDA marketing approval of our product candidates, if any, one of the U.S. patents covering each of such approved product(s) or the use thereof may be eligible for up to five years of patent term restoration under the Hatch-Waxman Act. The Hatch-Waxman Act allows a maximum of one patent to be extended per FDA-approved product. Patent term extension also may be available in certain foreign countries upon regulatory approval of our product candidates.

Nevertheless, we may not be granted patent term extension either in the U.S. or in any foreign country because of, for example, failing to apply within applicable deadlines, failing to apply prior to expiration of relevant patents or otherwise failing to satisfy applicable requirements. Moreover, the term of extension, as well as the scope of patent protection during any such extension, afforded by the governmental authority could be less than we request. In addition, even though some regulatory authorities may provide some other exclusivity for a product under their own laws and regulations, we may not be able to qualify the product or obtain the exclusive time period. If we are unable to obtain patent term extension/restoration or some other exclusivity, we could be subject to increased competition and our opportunity to establish or maintain product revenue could be substantially reduced or eliminated. Furthermore, we may not have sufficient time to recover our development costs prior to the expiration of our U.S. and foreign patents.

Obtaining and maintaining our patent protection depends on compliance with various procedural, documentary, 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.

The U.S. Patent and Trademark Office (“USPTO”) and various foreign governmental patent agencies require compliance with a number of procedural, documentary, fee payment and other similar provisions during the patent prosecution process. Periodic maintenance fees, renewal fees, annuity fees and various other governmental fees on any issued patent and/or pending patent applications are due to be paid to the USPTO and foreign patent agencies in several stages over the lifetime of a patent or patent application. We employ an outside firm and rely on our outside counsel to pay these fees. While an inadvertent lapse may sometimes be cured by payment of a late fee or by other means in accordance with the applicable rules, there are many situations in which noncompliance 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. If we fail to maintain the patents and patent applications directed to our product candidates, our competitors might be able to enter the market earlier than should otherwise have been the case, which would have a material adverse effect on our business.

We may become involved in lawsuits to protect our patents or other intellectual property rights, which could be expensive, time-consuming and ultimately unsuccessful.

Competitors may infringe our patents or other intellectual property rights. To counter infringement or unauthorized use, we may be required to file infringement claims, directly or through our licensors, which can be expensive and time consuming. In addition, in an infringement proceeding, a court may decide that a patent of our licensor 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 the patents we license at risk of being invalidated or interpreted narrowly and could put our licensors’ patent applications at risk of not issuing.

Interference proceedings brought by the USPTO may be necessary to determine the priority of inventions with respect to our patents or the patents of our licensors. An unfavorable outcome could require us to cease using the technology or to attempt to license rights to it from the prevailing party. Our business could be harmed if a prevailing party does not offer us a license on terms that are acceptable to us. Litigation or interference proceedings may fail and, even if successful, may result in substantial costs and distraction of our management and other employees. We may not be able to prevent, alone or with our licensors, misappropriation of our proprietary rights, particularly in countries where the laws may not protect those rights as fully as in the U.S. In addition, potential infringers of our intellectual property rights may have substantially more resources than we do to defend their position, which could adversely affect the outcome of any such dispute.

Furthermore, because of the substantial amount of discovery required in connection with intellectual property litigation, there is a risk that some of our confidential and proprietary information could be compromised by disclosure during this type of litigation. 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.

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Third-party claims of intellectual property infringement or misappropriation may adversely affect our business and could prevent us from developing or commercializing our product candidates.

Our commercial success depends in part on us not infringing the patents and proprietary rights of third parties. There is a substantial amount of litigation, both within and outside the U.S., involving patent and other intellectual property rights in the biotechnology and pharmaceutical industries, including patent infringement lawsuits, interferences, oppositions, ex-parte review and inter partes reexamination and post-grant review proceedings before the USPTO and corresponding foreign patent offices. Numerous U.S. and foreign issued patents and pending patent applications owned by third parties exist in the fields in which we are developing and may develop our product candidates. As the biotechnology and pharmaceutical industries expand and more patents are issued, the risk increases that our product candidates may be subject to claims of infringement of the patent rights of third parties. If a third party claims that we infringe on their products or technology, we could face a number of issues, including:

• infringement and other intellectual property claims which, with or without merit, can be expensive and time-consuming to litigate and can divert management’s attention from our core business

• substantial damages for past infringement, which we may have to pay if a court decides that our product infringes on a competitor’s patent

• a court prohibiting us from selling or licensing our product unless the patent holder licenses the patent to us, which the collaborator would not be required to do

• if a license is available from a patent holder, we may have to pay substantial royalties or grant cross licenses to our patents

• redesigning our processes so they do not infringe, which may not be possible or could require substantial funds and time

Third parties may assert that we are employing their proprietary technology without authorization. There may be third-party patents or patent applications with claims to materials, formulations, methods of manufacture or methods for treatment related to the use or manufacture of our product candidates that we failed to identify. For example, applications filed before November 29, 2000 and certain applications filed after that date that will not be filed outside the U.S. remain confidential until issued as patents. Except for the preceding exceptions, patent applications in the U.S. and elsewhere are generally published only after a waiting period of approximately 18 months after the earliest filing. Therefore, patent applications covering our product candidates could have been filed by others without the knowledge of us or our licensors. Additionally, pending patent applications which have been published can, subject to certain limitations, be later amended in a manner that could cover our product candidates or the use or manufacture of our product candidates. We may also face a claim of misappropriation if a third party believes that we inappropriately obtained and used trade secrets of such third party. If we are found to have misappropriated a third party’s trade secrets, we may be prevented from further using such trade secrets, limiting our ability to develop our product candidates, and we may be required to pay damages.

If any third-party patents were held by a court of competent jurisdiction to cover aspects of our materials, formulations, methods of manufacture or methods for treatment, the holders of any such patents would be able to block our ability to develop and commercialize the applicable product candidate until such patent expired or unless we obtain a license. These licenses may not be available on acceptable terms, if at all. Even if we were able to obtain a license, the rights may be nonexclusive, which could result in our competitors gaining access to the same intellectual property.

Ultimately, we could be prevented from commercializing a product, or be forced to cease some aspect of our business operations, if, as a result of actual or threatened patent infringement claims, we are unable to enter into licenses on acceptable terms.

Parties making claims against us may obtain injunctive or other equitable relief, which could effectively block our ability to further develop and commercialize one or more of our product candidates. Defending against claims of patent infringement or misappropriation of trade secrets could be costly and time-consuming, regardless of the outcome. Thus, even if we were to ultimately prevail, or to settle at an early stage, such litigation could burden us with substantial unanticipated costs. In addition, litigation or threatened litigation could result in significant demands on the time and attention of our management team, distracting them from the pursuit of other company 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, redesign our infringing products or obtain one or more licenses from third parties, which may be impossible or require substantial time and monetary expenditure. In addition, the uncertainties associated with litigation could have a material adverse effect on our ability to raise the funds necessary to continue our clinical trials, continue our research programs, license necessary technology from third parties, or enter into development collaborations that would help us bring our product candidates to market.

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Changes in U.S. patent law could diminish the value of patents in general, thereby impairing our ability to protect our product candidates.

As is the case with other pharmaceutical companies, our success is heavily dependent on intellectual property, particularly on obtaining and enforcing patents and patent rights. Obtaining and enforcing patents and patent rights in the specialty pharmaceutical industry involves both technological and legal complexity, and therefore, is costly, time-consuming and inherently uncertain. In addition, the U.S. has recently enacted and is currently implementing wide-ranging patent reform legislation. Further, several recent U.S. Supreme Court rulings have either narrowed the scope of patent protection available in certain circumstances or weakened the rights of patent owners in certain situations. In addition to increasing uncertainty with regard to our ability to obtain patents in the future, this combination of events has created uncertainty with respect to the value of patents and patent rights, once obtained.

For our U.S. patent applications containing a claim not entitled to priority before March 16, 2013, there is a greater level of uncertainty in the patent law. In September 2011, the Leahy-Smith America Invents Act (the “America Invents Act” or “AIA”) was signed into law. The AIA includes a number of significant changes to U.S. patent law, including provisions that affect the way patent applications will be prosecuted, reviewed after issuance, and may also affect patent litigation. The USPTO is currently developing regulations and procedures to govern administration of the AIA, and many of the substantive changes to patent law associated with the AIA. It is not clear what other, if any, impact the AIA will have on the operation of our business. Moreover, the AIA and its implementation could increase the uncertainties and costs surrounding the prosecution of patent applications and the enforcement or defense of patent rights, all of which could have a material adverse effect on our business and financial condition.

An important change introduced by the AIA is that, as of March 16, 2013, the U.S. transitioned to a “first-inventor-to-file” system for deciding which party should be granted a patent when two or more patent applications are filed by different parties claiming the same invention. A third party that files a patent application in the USPTO after that date but before the filing of a patent application by a licensor or us could therefore be awarded a patent covering an invention of ours even if said licensor or we had made the invention before it was made by the third party. This will require us to be cognizant going forward of the time from invention to filing of a patent application. Furthermore, our ability to obtain and maintain valid and enforceable patent rights depends on whether the differences between the licensor’s or our technology and the prior art allow our technology to be patentable over the prior art. Since patent applications in the U.S. and most other countries are confidential for a period of time after filing, we cannot be certain that a licensor or we were the first to either (a) file any patent application related to our product candidates or (b) invent any of the inventions claimed in our patents or patent applications.

Among some of the other changes introduced by the AIA are changes that limit where a patentee may file a patent infringement suit and providing opportunities for third parties to challenge any issued patent in the USPTO. This applies to all U.S. patents, even those issued before March 16, 2013. Because of a lower evidentiary standard in USPTO proceedings compared to the evidentiary standard in U.S. federal court necessary to invalidate a patent claim, a third party could potentially provide evidence in a USPTO proceeding sufficient for the USPTO to hold a claim invalid as unpatentable even though the same evidence may be insufficient to invalidate the claim if first presented in a district court action. Accordingly, a third party may attempt to use the USPTO procedures to invalidate patent rights that would not have been invalidated if first challenged by the third party as a defendant in a district court action.

Depending on decisions by the U.S. Congress, the federal courts, and the USPTO, the laws and regulations governing patents could change in unpredictable ways that would weaken our ability to obtain new patents or to enforce our existing patents and patents that we might obtain in the future.

Intellectual property rights do not address all potential threats to our competitive advantage.

The degree of future protection afforded by our intellectual property rights is uncertain because intellectual property rights have limitations, and may not adequately protect our business, or permit us to maintain our competitive advantage. The following examples are illustrative:

• Others may be able to make products that are similar to our product candidates but that are not covered by the claims of the patents that we license from others or may license or own in the future

• Others may independently develop similar or alternative technologies or otherwise circumvent any of our technologies without infringing our intellectual property rights

• Any of our collaborators might not have been the first to conceive and reduce to practice the inventions covered by the patents or patent applications that we license or will, in the future, own or license

• Any of our collaborators might not have been the first to file patent applications covering certain of the patents or patent applications that we license or will, in the future, license

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• Issued patents that have been licensed to us may not provide us with any competitive advantage, or may be held invalid or unenforceable, as a result of legal challenges by our competitors

• Our competitors might conduct research and development activities in countries where we do not have license rights, or in countries where research and development safe harbor laws exist, and then use the information learned from such activities to develop competitive products for sale in our major commercial markets

• Ownership of patents or patent applications licensed to us may be challenged by third parties

• The patents of third parties or pending or future applications of third parties, if issued, may have an adverse effect on our business

Confidentiality agreements with employees, consultants and others may not adequately prevent disclosure of trade secrets and protect other proprietary information.

We consider proprietary trade secrets and/or confidential know-how and unpatented know-how to be important to our business. We may rely on trade secrets and/or confidential know-how to protect our technology, especially where patent protection is believed by us to be of limited value. However, trade secrets and/or confidential know-how can be difficult to maintain as confidential.

To protect this type of information against disclosure or appropriation by competitors, our policy is to require our employees, consultants, contractors and advisors to enter into confidentiality agreements with us. However, current or former employees, consultants, contractors and advisers may unintentionally or willfully disclose our confidential information to competitors, and confidentiality agreements may not provide an adequate remedy in the event of unauthorized disclosure of confidential information. Enforcing a claim that a third party obtained illegally and is using trade secrets and/or confidential know-how is expensive, time consuming and unpredictable. The enforceability of confidentiality agreements may vary from jurisdiction to jurisdiction.

Failure to obtain or maintain trade secrets and/or confidential know-how trade protection could adversely affect our competitive position. Moreover, our competitors may independently develop substantially equivalent proprietary information and may even apply for patent protection in respect of the same. If successful in obtaining such patent protection, our competitors could limit our use of our trade secrets and/or confidential know-how.

We may need to license certain intellectual property from third parties, and such licenses may not be available or may not be available on commercially reasonable terms.

A third party may hold intellectual property, including patent rights that are important or necessary to the development or commercialization of our product candidates. It may be necessary for us to use the patented or proprietary technology of third parties to commercialize our product candidates, in which case we would be required to obtain a license from these third parties. Such a license may not be available on commercially reasonable terms or at all, which could materially harm 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 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 improperly used or disclosed confidential information of these third parties or our employees’ former employers.

Further, 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. We may also be subject to claims that former employees, consultants, independent contractors, collaborators or other third parties have an ownership interest in our patents or other intellectual property. Litigation may be necessary to defend against these and other claims challenging our right to and use of confidential and proprietary information. If we fail in defending any such claims, in addition to paying monetary damages, we may lose our rights therein. 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.

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We may be subject to claims challenging the inventorship or ownership of our patents and other intellectual property.

We may also be subject to claims that former employees, collaborators or other third parties have an ownership interest in our patents and 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 and other claims challenging inventorship or ownership. 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 such claims, litigation could result in substantial costs and be a distraction to management and other employees.

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 and development and to manufacture 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, material transfer agreements, consulting agreements or other similar agreements with our advisors, employees, third-party contractors 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 trade secrets become known by our competitors, are inadvertently incorporated into the technology of others, or are 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 that we may collaborate with in the future will usually expect to be granted rights to publish data arising out of such collaboration, 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, in addition to the opportunity to 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, independent development or publication of information by any of our third-party collaborators. A competitor’s discovery of our trade secrets would impair our competitive position and have an adverse impact on our business.

Risks Related to Our Securities

Our share price is very volatile, may not reflect the underlying value of our net assets or business prospects, and you may not be able to resell your shares at a profit or at all.

The market price of our common stock could be subject to significant fluctuations. The market prices for securities of pharmaceutical and biotechnology companies, and early-stage drug discovery and development companies like ours in particular, have historically been highly volatile and may continue to be highly volatile in the future. The following factors, in addition to other risk factors described in this section, may have a significant impact on the market price of our common stock:

• announcements of significant changes in our business or operations

• the development status of any of our drug candidates, including clinical study results and determinations by regulatory authorities with respect thereto, including but not limited to (i) ACER-001 for which we received FDA’s acceptance for review of our resubmitted New Drug Application for the treatment of patients with UCDs and a PDUFA target action date of January 15, 2023, (iii) potential ACER-801 topline results in the fourth quarter of 2022 from an ongoing Phase 2a trial for the treatment of moderate to severe VMS in post-menopausal women, assuming such trial continues to completion on the schedule currently expected, and (iv) a recently commenced EDSIVO^TM pivotal Phase 3 clinical trial in patients with COL3A1+ vEDS

• the initiation, termination or reduction in the scope of any collaboration arrangements or any disputes or developments regarding such collaborations

• market conditions

• the impact of short selling or the impact of a potential “short squeeze” resulting from a sudden increase in demand for our stock

• our capital and our inability to obtain additional funding

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• announcements of technological innovations, new commercial products, or other material events by our competitors or by us

• disputes or other developments concerning our proprietary rights

• changes in, or failure to meet, securities analysts’ or investors’ expectations of our financial performance

• additions or departures of key personnel

• discussions of our business, products, financial performance, prospects or stock price by the financial and scientific press and online investor communities

• public concern as to, and legislative action with respect to, the pricing and availability of prescription drugs or the safety of drugs and drug delivery techniques

• regulatory developments in the U.S. and in foreign countries

• dilutive effects of sales of shares of common stock by us or our stockholders, including by holders of the Secured Convertible Notes upon conversion, and sales of common stock acquired upon exercise by the holders of options

• our ability to sell shares of common stock to Lincoln Park pursuant to the terms of the equity line purchase agreement and our ability to register and maintain the registration of the shares issued and issuable thereunder

• our ability to sell shares of common stock pursuant to our at-the-market facility with Jones Trading Institutional Services and Roth Capital Partners, LLC

Broad market and industry factors, as well as economic and political factors, also may materially adversely affect the market price of our common stock. As noted, the short-, medium-, and long-term impacts of the COVID-19 pandemic on the U.S. and global economies generally, and on our business specifically, are difficult to predict.

We have been notified that we are not in compliance with the Nasdaq continued listing requirements. If we are unable to regain and maintain compliance with the continued listing requirements of the Nasdaq Capital Market, our common stock could be delisted, which could affect our common stock's market price and liquidity and reduce our ability to raise capital.

The Nasdaq Capital Market’s continued listing standards for our common stock require, among other things, that we maintain either (i) stockholders’ equity of $2.5 million, (ii) market value of listed securities of $35 million or (iii) net income from continuing operations of $500,000 in the most recently completed fiscal year or in two of the last three most recently completed fiscal years. On May 31, 2022, we received a letter from the listing qualifications department staff of Nasdaq indicating that for the last 30 consecutive business days our minimum Market Value of Listed Securities (“MVLS”) was below the $35 million required for continued listing on the Nasdaq Capital Market pursuant to Nasdaq listing rule 5550(b)(2). Our stockholder’s equity and net income from continuing operations were also below the alternate listing standards levels at that time. In accordance with Nasdaq listing rules, we have 180 calendar days, or until November 28, 2022, to regain compliance. Previously, on December 29, 2021, we received a letter from the listing qualifications department staff of Nasdaq indicating that for the last 30 consecutive business days our MVLS was below the $35 million required for continued listing on the Nasdaq Capital Market pursuant to Nasdaq listing rule 5550(b)(2). Our stockholder’s equity and net income from continuing operations were also below the alternate listing standards levels at that time and at December 31, 2021. In accordance with Nasdaq listing rules, we had 180 calendar days, or until June 27, 2022, to regain compliance. On March 30, 2022, we received notice from Nasdaq that we had regained compliance with the applicable continued listing standards and that the matter was closed. There can be no assurance that we will be able to regain and maintain compliance with Nasdaq listing standards. Our failure to meet or to continue to meet these requirements could result in our common stock being delisted from the Nasdaq Capital Market. If our common stock were delisted from the Nasdaq Capital Market, among other things, this could result in a number of negative implications, including reduced market price and liquidity of our common stock as a result of the loss of market efficiencies associated with the Nasdaq, the loss of federal preemption of state securities laws, as well as the potential loss of confidence by suppliers, partners, employees and institutional investor interest, fewer business development opportunities, greater difficulty in obtaining financing and breaches of certain contractual obligations.

We have been a defendant in securities litigation in the past and may become the target of securities litigation in the future, which may be costly and time-consuming to defend.

Following periods of market volatility in the price of a company’s securities or the reporting of unfavorable news, security holders have often instituted class action litigation. This risk is especially relevant for us because pharmaceutical companies like ours have experienced significant stock price volatility in recent years. For example, we were named in a putative securities class action complaint and several stockholder derivative actions, which have been subsequently settled, as a result of the decline in our stock price following a 2019 Complete Response Letter from FDA regarding our NDA for EDSIVO™. If we become involved in this type of

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litigation in the future, regardless of the outcome, we could incur substantial legal costs and our management’s attention could be diverted from the operation of our business, causing our business to suffer.

Our “blank check” preferred stock could be issued to prevent a business combination not desired by management or our majority stockholders.

Our charter authorizes the issuance of “blank check” preferred stock with such designations, rights and preferences as may be determined by our Board of Directors without stockholder approval. Our preferred stock could be utilized as a method of discouraging, delaying, or preventing a change in control and as a method of preventing stockholders from receiving a premium for their shares in connection with a change of control.

Future sales of our common stock could cause dilution, and the sale of such common stock by us or by holders of our Secured Convertible Notes, or the perception that such sales may occur, could cause the price of our stock to decline.

Sales of additional shares of our common stock, as well as securities convertible into or exercisable for common stock, could result in substantial dilution to our stockholders and cause the market price of our common stock to decline. An aggregate of 15,672,791 shares of common stock were outstanding as of June 30, 2022. As of such date, another 2,850,787 shares of common stock were issuable upon exercise of outstanding options, 150,000 shares of common stock were issuable upon exercise of the SWK Warrant, and the Secured Convertible Notes were outstanding and convertible by the holders into shares of common stock (including 2,400,000 shares upon conversion of the original principal amount, without taking into account the limitations on the conversion of the Secured Convertible Notes, plus additional shares if accrued but unpaid interest on the Secured Convertible Notes is converted into shares of common stock). A substantial majority of the outstanding shares of our common stock, as well as a substantial majority of the shares of common stock issuable upon exercise of outstanding options, are freely tradable without restriction or further registration under the Securities Act of 1933.

We may sell additional shares of common stock, as well as securities convertible into or exercisable for common stock, in subsequent public or private offerings. We may also issue additional shares of common stock, as well as securities convertible into or exercisable for common stock, to finance future acquisitions. We will need to raise additional capital in order to initiate or complete additional development activities for all of our product candidates or to pursue additional disease indications for our product candidates, and this may require us to issue a substantial amount of securities (including common stock as well as securities convertible into or exercisable for common stock). There can be no assurance that our capital raising efforts will be able to attract the capital needed to execute on our business plan and sustain our operations. Moreover, we cannot predict the size of future issuances of our common stock, as well as securities convertible into or exercisable for common stock, or the effect, if any, that future issuances and sales of our securities will have on the market price of our common stock. Sales of substantial amounts of our common stock by us or by the holders of our Secured Convertible Notes, as well as securities convertible into or exercisable for common stock, including shares issued in connection with an acquisition or securing funds to complete any clinical trial plans, or the perception that such sales could occur, may result in substantial dilution and may adversely affect prevailing market prices for our common stock. In addition, the perception in the public markets that the holders of our Secured Convertible Notes may sell all or a portion of their shares upon conversion as a result of our registration of such shares for resale by the holders could also in and of itself have a material adverse effect on the market price of our common stock.

On April 30, 2020, we entered into the equity line purchase agreement with Lincoln Park, pursuant to which Lincoln Park has committed to purchase up to $15.0 million of our common stock, with $11.8 million obligation remaining as of June 30, 2022. Upon the execution of the purchase agreement, we issued 148,148 commitment shares to Lincoln Park as consideration for its commitment to purchase shares of our common stock under the purchase agreement. The remaining shares of our common stock that may be issued under the purchase agreement may be sold by us to Lincoln Park at our discretion from time to time over a 36-month period commencing on June 8, 2020. The purchase price for the shares that we may sell to Lincoln Park under the purchase agreement will fluctuate based on the price of our common stock. Depending on market liquidity at the time, sales of such shares may cause the trading price of our common stock to fall. Subsequent to signing the purchase agreement through the date of this report, we have sold an aggregate of 1,400,000 shares of common stock under the purchase agreement for net proceeds of $3.2 million.

We generally have the right to control the timing and amount of any sales of our shares to Lincoln Park under the purchase agreement. Sales of our common stock to Lincoln Park under the purchase agreement will depend upon market conditions and other factors to be determined by us. We may ultimately decide to sell to Lincoln Park all or only some of the shares of our common stock that may be available for us to sell pursuant to the purchase agreement. If and when we do sell additional shares to Lincoln Park, after Lincoln Park has acquired the shares, Lincoln Park may resell all, some or none of those shares at any time or from time to time in its discretion. Therefore, sales to Lincoln Park by us could result in substantial dilution to the interests of other holders of our common stock. Additionally, the sale of a substantial number of shares of our common stock to Lincoln Park, or the anticipation of such sales, could make it more difficult for us to sell equity or equity-related securities in the future at a time and at a price that we might otherwise wish to effect sales.

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On November 9, 2018, we entered into a sales agreement with Roth Capital Partners, LLC, and on March 18, 2020, an amended and restated sales agreement was entered into with JonesTrading Institutional Services LLC and Roth Capital Partners, LLC. The agreement provides a facility for the offer and sale of shares of common stock from time to time having an aggregate offering price of up to $50.0 million depending upon market demand, in transactions deemed to be an at-the-market offering. We have no obligation to sell any shares of common stock pursuant to the agreement and may at any time suspend sales pursuant to the agreement. Each party may terminate the agreement at any time without liability. As of June 30, 2022, $36.7 million remained available under this facility, subject to various limitations.

We presently do not intend to pay cash dividends on our common stock.

We currently anticipate that no cash dividends will be paid on our common stock in the foreseeable future. While our dividend policy will be based on the operating results and capital needs of the business, it is anticipated that all earnings, if any, will be retained to finance the future expansion of our business.

We may issue debt and equity securities or securities convertible into equity securities, any of which may be senior to our common stock as to distributions and in liquidation, which could negatively affect the value of our common stock.

In the future, we may attempt to increase our capital resources by entering into debt or debt-like financing that is unsecured or secured by up to all of our assets, or by issuing additional debt or equity securities, which could include issuances of secured or unsecured commercial paper, medium-term notes, senior notes, subordinated notes, guarantees, preferred stock, hybrid securities, or securities convertible into or exchangeable for equity securities. In the event of our liquidation, our lenders and holders of our debt and preferred securities would receive distributions of available assets before distributions to the holders of our common stock. Because our decision to incur debt and issue securities in future offerings may be influenced by market conditions and other factors beyond our control, we cannot predict or estimate the amount, timing or nature of our future offerings or debt financings. Further, market conditions could require us to accept less favorable terms for the issuance of our securities in the future.

Because a prior year merger resulted in an ownership change under Section 382 of the Internal Revenue Code, our pre-merger net operating loss carryforwards and certain other tax attributes will be subject to limitation or elimination. The net operating loss carryforwards and certain other tax attributes of our former wholly-owned subsidiary may also be subject to limitations as a result of ownership changes.

Under Sections 382 and 383 of the Internal Revenue Code of 1986, as amended, if a corporation undergoes an “ownership change,” the corporation’s ability to use its pre-change net operating loss carryforwards and other pre-change tax attributes to offset its post-change income and taxes may be limited. In general, an “ownership change” occurs if there is a cumulative change in a company’s ownership by “five-percent shareholders” that exceeds 50 percentage points over a rolling three-year period. Similar rules may apply under state tax laws. We experienced an ownership change on July 17, 2015 and August 3, 2018, and may experience ownership changes in the future as a result of previous or future transactions in our stock, some of which may be outside our control. As a result, if we earn net taxable income, our ability to use our pre-change net operating loss carryforwards, or other pre-change tax attributes, to offset U.S. federal and state taxable income and taxes may be subject to significant limitations.

Because of their ownership of our common stock, insiders may influence significant corporate decisions.

As of June 30, 2022, our executive officers and directors and their affiliates beneficially owned or controlled 14% of the outstanding shares of our common stock. Accordingly, these executive officers, directors and their affiliates will have substantial influence over the outcome of corporate actions requiring stockholder approval, including the election of directors, any merger, consolidation or sale of all or substantially all of our assets or any other significant corporate transactions. This concentration of ownership may also delay or prevent a change of control of our company, even if such a change of control would benefit our other stockholders.

Anti-takeover provisions in our organizational documents and Delaware law might discourage, delay, or prevent an acquisition attempt or change in control of our company that you might consider favorable.

Our certificate of incorporation and bylaws contain provisions that may delay or prevent an acquisition or change in control of our company. Among other things, these provisions:

• authorize the Board of Directors to issue, without stockholder approval, blank-check preferred stock that, if issued, could operate as a “poison pill” to dilute the stock ownership of a potential hostile acquirer to prevent an acquisition that is not approved by the Board of Directors

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• establish advance notice requirements for stockholder nominations of directors and for stockholder proposals that can be acted on at stockholder meetings

• limit who may call stockholder meetings

• require that any action to be taken by our stockholders be effected at a duly called annual or special meeting and not by written consent

• provide that vacancies on our Board of Directors may be filled only by a majority of directors then in office, even if less than a quorum

• require a super-majority of votes to approve certain amendments to our charter as well as to amend our bylaws generally

• authorize us to indemnify officers and directors against losses that they may incur in investigations and legal proceedings resulting from their services to us, which may include services in connection with takeover defense measures

Further, as a Delaware corporation, we are also subject to provisions of Section 203 of the Delaware General Corporation Law regulating corporate takeovers. Section 203 generally prohibits us from engaging in a business combination with interested stockholders subject to certain exceptions.

These anti-takeover provisions and other provisions under Delaware law, our charter and our bylaws could discourage, delay or prevent a transaction involving an acquisition attempt or a change in control of our company, including actions that our stockholders may deem advantageous, or negatively affect the trading price of our common stock. These provisions could also discourage proxy contests and make it more difficult for you and other stockholders to elect directors of your choosing and to cause us to take other corporate actions you desire.

Our certificate of incorporation designates the Court of Chancery of 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 a stockholder’s ability to bring a claim in a judicial forum that the stockholder believes is more convenient or favorable for disputes with us or our directors, officers or other employees.

Our certificate of incorporation provides that, unless we consent in writing to the selection of an alternative forum, the Court of Chancery of the State of Delaware shall be the sole and exclusive forum for:

• any derivative action or proceeding brought on our behalf

• 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

• any action asserting a claim arising pursuant to any provision of the Delaware General Corporation Law

• any action asserting a claim against us governed by the internal affairs doctrine

Section 27 of the Exchange Act creates exclusive federal jurisdiction over all suits brought to enforce any duty or liability created by the Exchange Act or the rules and regulations thereunder. As a result, the exclusive forum provision will not apply to suits brought to enforce any duty or liability created by the Exchange Act or any other claim for which the federal courts have exclusive jurisdiction. Section 22 of the Securities Act creates concurrent jurisdiction for federal and state courts over all suits brought to enforce any duty or liability created by the Securities Act or the rules and regulations thereunder. As a result, the exclusive forum provision will not apply to suits brought to enforce any duty or liability created by the Securities Act or any other claim for which the federal and state courts have concurrent jurisdiction.

Any person or entity purchasing or otherwise acquiring any interest in shares of our capital stock shall be deemed to have notice of and consented to the provisions of our certificate of incorporation described above. This choice of forum provision may limit a stockholder’s ability to bring a claim in a judicial forum that the stockholder believes is more convenient or favorable for disputes with us or our directors, officers or other employees, which may discourage such lawsuits against us and our directors, officers and other employees. Alternatively, if a court were to find these provisions of our certificate of incorporation inapplicable to, or unenforceable in respect of, 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, financial condition or results of operations.

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Item 6. Exhibits

Exhibit No.	Description
3.1	Certificate of Incorporation, as filed with the Delaware Secretary of State on May 15, 2018 (incorporated by reference to Exhibit 3.3 to the Company’s Current Report on Form 8-K filed on May 15, 2018).
3.2	Bylaws, effective May 15, 2018 (incorporated by reference to Exhibit 3.4 to the Company’s Current Report on Form 8-K filed on May 15, 2018).
3.3	Certificate of Ownership and Merger, as filed with the Delaware Secretary of State on May 15, 2018 (incorporated by reference to Exhibit 3.5 to the Company’s Current Report on Form 8-K filed on May 15, 2018).
10.1+	Employment Agreement between Acer Therapeutics Inc. and Tanya Hayden dated June 19, 2022 (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed June 21, 2022).
31.1*	Certification of Principal Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2*	Certification of Principal Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1**	Certification of Principal Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2**	Certification of Principal Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS*	Inline XBRL Instance Document – the instance document does not appear in the Interactive Data File because its 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 Label Linkbase Document
101.PRE*	Inline XBRL Taxonomy Extension Presentation Linkbase Document
104	Cover Page Interactive Data File (formatted as inline XBRL and contained in Exhibits 101).

* Filed herewith.

** In accordance with Item 601(b)(32)(ii) of Regulation S-K and SEC Release No. 34-47986, the certifications furnished in Exhibits 32.1 and 32.2 hereto are deemed to accompany this Form 10-Q and will not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934. Such exhibits will not be deemed to be incorporated by reference into any filing under the Securities Act of 1933 or the Securities Exchange Act of 1934.

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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.

		ACER THERAPEUTICS INC.
Date: November 14, 2022	By:	/s/  Harry S. Palmin
		Harry S. Palmin Chief Financial Officer (Principal Financial and Accounting Officer)

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EX-31.1

EXHIBIT 31.1

CERTIFICATION PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT

I, Chris Schelling, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q/A of Acer 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(s) 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(s) 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: November 14, 2022	By:	/s/ Chris Schelling
		Chris Schelling         President and Chief Executive Officer (Principal Executive Officer)

EX-31.2

EXHIBIT 31.2

CERTIFICATION PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT

I, Harry S. Palmin, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q/A of Acer 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(s) 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(s) 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: November 14, 2022	By:	/s/ Harry S. Palmin
		Harry S. Palmin         Chief Financial Officer (Principal Financial and Accounting Officer)

EX-32.1

EXHIBIT 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906

OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Acer Therapeutics Inc. (the “Company”) on Form 10-Q/A for the period ending June 30, 2022 (the “Report”), as filed with the Securities and Exchange Commission on the date hereof, I, Chris Schelling, President and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, to the best of my knowledge, that:

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: November 14, 2022	By:	/s/ Chris Schelling
		Chris Schelling  President and Chief Executive Officer (Principal Executive Officer)

EX-32.2

EXHIBIT 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906

OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Acer Therapeutics Inc. (the “Company”) on Form 10-Q/A for the period ending June 30, 2022 (the “Report”), as filed with the Securities and Exchange Commission on the date hereof, I, Harry S. Palmin, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, to the best of my knowledge, that:

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: November 14, 2022	By:	/s/ Harry S. Palmin
		Harry S. Palmin Chief Financial Officer (Principal Financial and Accounting Officer)

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Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2022	Aug. 01, 2022
Cover [Abstract]
Entity Registrant Name	Acer Therapeutics Inc.
Entity Central Index Key	0001069308
Document Type	10-Q/A
Document Period End Date	Jun. 30, 2022
Amendment Flag	true
Amendment Description	Acer Therapeutics Inc. (the "Company" or "we," "our" or "us") is filing this Amendment No. 1 on Form 10-Q/A ("Form 10-Q/A") to amend its Quarterly Report on Form 10-Q, originally filed with the U.S. Securities and Exchange Commission (“SEC”) on August 15, 2022 (the "Original Form 10-Q"), to restate certain items presented in our Original Form 10-Q. This Form 10-Q/A includes restatement of our unaudited condensed interim financial statements as of and for the three and six months ended June 30, 2022. We are also providing an update in our disclosures in Part I, Item 4, “Controls and Procedures,” of this Form 10-Q/A regarding a material weakness in internal control over financial reporting.
Current Fiscal Year End Date	--12-31
Trading Symbol	ACER
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		15,942,749
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2022
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity File Number	001-33004
Entity Tax Identification Number	32-0426967
Entity Address, Address Line One	One Gateway Center
Entity Address, Address Line Two	Suite 356
Entity Address, Address Line Three	300 Washington Street
Entity Address, City or Town	Newton
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	02458
City Area Code	844
Local Phone Number	902-6100
Entity Interactive Data Current	Yes
Title of 12(b) Security	Common Stock, $0.0001 par value per share
Security Exchange Name	NASDAQ
Entity Incorporation, State or Country Code	DE
Document Quarterly Report	true
Document Transition Report	false

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Condensed Balance Sheets - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 14,469,744	$ 12,710,762
Collaboration receivable		5,000,000
Prepaid expenses	666,318	1,094,229
Other current assets	65,061	9,283,625
Total current assets	15,201,123	28,088,616
Property and equipment, net	101,582	114,112
Other assets:
Goodwill	7,647,267	7,647,267
Other non-current assets	292,918	406,956
Total assets	23,242,890	36,256,951
Current liabilities:
Accounts payable	3,491,991	1,405,734
Accrued expenses	5,567,964	2,428,193
Deferred collaboration funding, current	6,340,438	15,825,938
Other current liabilities	185,265	9,450,085
Bridge loan payable, current, at fair value	1,887,606
Total current liabilities	17,473,264	29,109,950
Deferred collaboration funding, non-current	7,868,731	8,661,109
Bridge loan payable non-current, at fair value	2,197,103
Convertible note payable, at fair value	4,321,200
Other non-current liabilities	166,134	209,497
Total liabilities	32,026,432	37,980,556
Commitments and Contingencies (Note 8)
Stockholders’ deficit:
Preferred stock, $0.0001 par value; authorized 10,000,000 shares; none issued and outstanding
Common stock, $0.0001 par value; authorized 150,000,000 shares; 15,672,791 and 14,310,244 shares issued and outstanding at June 30, 2022 and December 31, 2021, respectively	1,567	1,431
Additional paid-in capital	117,570,885	112,784,918
Accumulated deficit	(126,355,994)	(114,509,954)
Total stockholders’ deficit	(8,783,542)	(1,723,605)
Total liabilities and stockholders’ deficit	$ 23,242,890	$ 36,256,951

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Condensed Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2022	Dec. 31, 2021
Statement Of Financial Position [Abstract]
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	15,672,791	14,310,244
Common stock, shares outstanding	15,672,791	14,310,244

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Condensed Statements of Operations - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Revenue				$ 900,000
Operating expenses:
Research and development (net of collaboration funding of $1,648,631 and $1,025,935 in the three months ended June 30, 2022 and 2021, respectively, and of $4,648,002 and $1,312,038 in the six months ended June 30, 2022 and 2021, respectively)	$ 3,426,773	$ 1,361,287	$ 6,598,412	3,367,192
General and administrative (net of collaboration funding of $3,257,701 and $602,534 in the three months ended June 30, 2022 and 2021, respectively, and of $5,629,876 and $602,534 in the six months ended June 30, 2022 and 2021, respectively)	3,638,073	2,268,508	7,513,674	5,782,649
Total operating expenses	7,064,846	3,629,795	14,112,086	9,149,841
Loss from operations	(7,064,846)	(3,629,795)	(14,112,086)	(8,249,841)
Other income (expense), net:
Costs of debt issuance	(200,129)		(1,368,194)
Changes in fair value of debt instruments	4,729,460		3,767,060
Interest and other income (expense) , net	(139,234)	564,914	(142,072)	524,751
Foreign currency transaction gain (loss)	7,713	(4,156)	9,252	44,748
Total other income (expense), net	4,397,810	560,758	2,266,046	569,499
Net loss	$ (2,667,036)	$ (3,069,037)	$ (11,846,040)	$ (7,680,342)
Net loss per share - basic (as restated)	$ (0.17)	$ (0.21)	$ (0.80)	$ (0.54)
Weighted average common shares outstanding - basic (as restated)	15,273,707	14,310,244	14,794,637	14,225,551
Net loss per share - diluted (as restated)	$ (0.30)	$ (0.21)	$ (0.83)	$ (0.54)
Weighted average common shares outstanding - diluted (as restated)	17,681,400	14,310,244	16,372,537	14,225,551

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Condensed Statements of Operations (Parenthetical) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Research and Development
Collaboration funding amount	$ 1,648,631	$ 1,025,935	$ 4,648,002	$ 1,312,038
General and Administrative
Collaboration funding amount	$ 3,257,701	$ 602,534	$ 5,629,876	$ 602,534

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Condensed Statements of Changes in Stockholders' (Deficit) Equity - USD ($)	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit
Beginning balance at Dec. 31, 2020	$ 8,224,334	$ 1,324	$ 107,358,971	$ (99,135,961)
Beginning balance, shares at Dec. 31, 2020		13,233,137
Issuance of common stock, net of issuance costs	3,139,047	$ 107	3,138,940
Issuance of common stock, net of issuance costs, shares		1,077,107
Stock-based compensation	559,436		559,436
Net loss	(4,611,305)			(4,611,305)
Ending balance at Mar. 31, 2021	7,311,512	$ 1,431	111,057,347	(103,747,266)
Ending balance, shares at Mar. 31, 2021		14,310,244
Beginning balance at Dec. 31, 2020	8,224,334	$ 1,324	107,358,971	(99,135,961)
Beginning balance, shares at Dec. 31, 2020		13,233,137
Net loss	(7,680,342)
Ending balance at Jun. 30, 2021	4,837,138	$ 1,431	111,652,010	(106,816,303)
Ending balance, shares at Jun. 30, 2021		14,310,244
Beginning balance at Mar. 31, 2021	7,311,512	$ 1,431	111,057,347	(103,747,266)
Beginning balance, shares at Mar. 31, 2021		14,310,244
Stock-based compensation	594,663		594,663
Net loss	(3,069,037)			(3,069,037)
Ending balance at Jun. 30, 2021	4,837,138	$ 1,431	111,652,010	(106,816,303)
Ending balance, shares at Jun. 30, 2021		14,310,244
Beginning balance at Dec. 31, 2021	$ (1,723,605)	$ 1,431	112,784,918	(114,509,954)
Beginning balance, shares at Dec. 31, 2021	14,310,244	14,310,244
Stock-based compensation	$ 474,097		474,097
Proceeds allocated to SWK Warrant	327,031		327,031
Net loss	(9,179,004)			(9,179,004)
Ending balance at Mar. 31, 2022	(10,101,481)	$ 1,431	113,586,046	(123,688,958)
Ending balance, shares at Mar. 31, 2022		14,310,244
Beginning balance at Dec. 31, 2021	$ (1,723,605)	$ 1,431	112,784,918	(114,509,954)
Beginning balance, shares at Dec. 31, 2021	14,310,244	14,310,244
Net loss	$ (11,846,040)
Ending balance at Jun. 30, 2022	$ (8,783,542)	$ 1,567	117,570,885	(126,355,994)
Ending balance, shares at Jun. 30, 2022	15,672,791	15,672,791
Beginning balance at Mar. 31, 2022	$ (10,101,481)	$ 1,431	113,586,046	(123,688,958)
Beginning balance, shares at Mar. 31, 2022		14,310,244
Issuance of common stock, net of issuance costs	$ 3,524,198	$ 136	3,524,062
Issuance of common stock, net of issuance costs, shares	300,000	1,362,547
Stock-based compensation	$ 460,777		460,777
Net loss	(2,667,036)			(2,667,036)
Ending balance at Jun. 30, 2022	$ (8,783,542)	$ 1,567	$ 117,570,885	$ (126,355,994)
Ending balance, shares at Jun. 30, 2022	15,672,791	15,672,791

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Condensed Statements of Cash Flows - USD ($)	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net loss	$ (11,846,040)	$ (7,680,342)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Stock-based compensation	934,874	1,154,099
Depreciation	38,796	32,637
Non-cash changes in fair value of debt	(3,767,060)
Debt issuance costs recognized as expense	1,368,194
Gain on extinguishment of debt		(568,909)
Non-cash interest expense		2,756
Loss on disposal of property and equipment, net	4,669
Changes in operating assets and liabilities
Collaboration receivable	5,000,000
Prepaid expenses	427,911	251,338
Other current assets	9,215,320	(9,395,172)
Accounts payable	2,086,257	136,346
Accrued expenses	3,139,771	(2,281,814)
Deferred collaboration funding	(10,277,878)	18,191,292
Other current liabilities	(9,190,901)	9,400,708
Net cash (used in) provided by operating activities	(12,866,087)	9,242,939
Cash flows from investing activities:
Purchase of property and equipment	(30,935)	(15,222)
Net cash used in investing activities	(30,935)	(15,222)
Cash flows from financing activities:
Proceeds from issuance of common stock, net of issuance costs	3,524,198	3,139,047
Receipt of funds from Relief secured loans		4,000,000
Proceeds from Bridge Loan, net of warrant allocation and lender fees	6,013,148
Proceeds from Secured Convertible Notes, net of lender fees	5,516,556
Proceeds allocated to SWK Warrant based on valuation	327,031
Payment of debt and convertible debt issuance costs	(724,929)
Net cash provided by financing activities	14,656,004	7,139,047
Net increase in cash and cash equivalents	1,758,982	16,366,764
Cash and cash equivalents, beginning of period	12,710,762	5,761,568
Cash and cash equivalents, end of period	14,469,744	22,128,332
Supplemental cash flow information:
Cash paid for interest	$ 136,500
Non-cash financing activities:
Non-cash repayment of secured loan		4,000,000
Extinguishment of debt		$ 568,909

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Nature of Operations and Basis of Presentation

6 Months Ended

Jun. 30, 2022

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Nature of Operations and Basis of Presentation

1. NATURE OF OPERATIONS AND BASIS OF PRESENTATION

Business

Acer Therapeutics Inc., a Delaware corporation (the “Company”), is a pharmaceutical company focused on the acquisition, development, and commercialization of therapies for serious rare and life-threatening diseases with significant unmet medical needs. The Company’s pipeline includes four investigational programs: ACER-001 (sodium phenylbutyrate) for the treatment of various inborn errors of metabolism, including urea cycle disorders (“UCDs”) and Maple Syrup Urine Disease (“MSUD”); ACER-801 (osanetant) for the treatment of induced vasomotor symptoms (“iVMS”); EDSIVO™ (celiprolol) for the treatment of vascular Ehlers-Danlos syndrome (“vEDS”) in patients with a confirmed type III collagen (COL3A1) mutation; and ACER-2820 (emetine), a host-directed therapy against a variety of viruses, including cytomegalovirus, Zika, dengue, Ebola, and COVID-19. Each of the Company’s product candidates is believed to present a comparatively de-risked profile, having one or more of a favorable safety profile, clinical proof-of-concept data, mechanistic differentiation, and/or accelerated pathways for development through specific programs and procedures established by the United States (“U.S.”) Food and Drug Administration (“FDA”).

Since its inception, the Company has devoted substantially all of its efforts to business planning, research and development, recruiting management and technical staff, acquiring operating assets, and raising capital. The Company has generated revenue related to the collaboration and license agreement (the “Collaboration Agreement”) with Relief Therapeutics Holding AG (“Relief”) as described below but has not generated any product revenue to date and may never generate any product revenue in the future.

Liquidity 

The Company had an accumulated deficit of $126.4 million and cash and cash equivalents of $14.5 million as of June 30, 2022. Net cash used in operating activities was $12.9 million for the six months ended June 30, 2022.

On November 9, 2018, the Company entered into a sales agreement with Roth Capital Partners, LLC, and on March 18, 2020, an amended and restated sales agreement was entered into with JonesTrading Institutional Services LLC and Roth Capital Partners, LLC. The agreement provides a facility for the offer and sale of shares of common stock from time to time having an aggregate offering price of up to $50.0 million depending upon market demand, in transactions deemed to be an at-the-market (“ATM”) offering. The Company has no obligation to sell any shares of common stock pursuant to the agreement and may at any time suspend sales pursuant to the agreement. Each party may terminate the agreement at any time without liability. During the three and six months ended June 30, 2022, the Company sold 1,062,547 shares of common stock through its ATM facility at a gross sale price of $3.0719 per share, for gross proceeds of $3.3 million. Proceeds, net of $0.2 million of fees and offering costs, were $3.1 million. As of June 30, 2022, $36.7 million remained available under the Company’s ATM facility, subject to various limitations.

On April 30, 2020, the Company entered into an equity line purchase agreement and registration rights agreement pursuant to which Lincoln Park Capital Fund, LLC (“Lincoln Park”) has committed to purchase up to $15.0 million of the Company’s common stock. Under the terms and subject to the conditions of the purchase agreement, the Company has the right, but not the obligation, to sell to Lincoln Park, and Lincoln Park is obligated to purchase up to $15.0 million of the Company’s common stock, with $11.8 million obligation remaining as of June 30, 2022. Such sales of common stock by the Company will be subject to certain limitations, and may occur from time to time, at the Company’s sole discretion, over the 36-month period commencing on June 8, 2020. The number of shares the Company may sell to Lincoln Park on any single business day in a regular purchase is 50,000, but that amount may be increased up to 100,000 shares, depending upon the market price of the Company’s common stock at the time of sale and subject to a maximum limit of $1.0 million per regular purchase. The purchase price per share for each such regular purchase will be based on prevailing market prices of the Company’s common stock immediately preceding the time of sale as computed under the purchase agreement. In addition to regular purchases, the Company may also direct Lincoln Park to purchase other amounts as accelerated purchases or as additional accelerated purchases if the closing sale price of the common stock exceeds certain threshold prices as set forth in the purchase agreement. During the three and six months ended June 30, 2022, the Company sold 300,000 shares of common stock under its purchase agreement with Lincoln Park at a weighted average gross sale price of $1.25 per share, resulting in proceeds of $0.4 million. As of June 30, 2022, $11.8 million remained available under the Lincoln Park agreement, subject to various limitations.

On January 25, 2021, the Company entered into an option agreement (the “Option Agreement”) with Relief, pursuant to which the Company granted Relief an exclusive option (the “Exclusivity Option”) to pursue a potential collaboration and license arrangement with the Company for the development, regulatory approval and commercialization of ACER-001 for the treatment of various inborn errors of metabolism, including UCDs and MSUD. The Option Agreement provided a period of time up to June 30, 2021, for the parties to perform additional due diligence and to work toward negotiation and execution of a definitive agreement

with respect to the potential collaboration for ACER‑001. In consideration for the grant of the Exclusivity Option, (i) the Company received from Relief an upfront nonrefundable payment of $1.0 million, (ii) Relief provided to the Company a 12-month secured loan in the principal amount of $4.0 million, as evidenced by a Promissory Note (the “Note”) the Company issued to Relief, and (iii) the Company granted Relief a security interest in all of its assets to secure performance of the Note, as evidenced by a Security Agreement (the “Security Agreement”). The Note was repayable in one lump sum within 12 months from issuance and bore interest at a rate equal to 6% per annum. If a definitive agreement with respect to the potential collaboration had not been executed by the parties on or before June 30, 2021, the Exclusivity Option would have terminated, and the Note would have been repayable by the Company upon maturity.

On March 19, 2021, the Company entered into the Collaboration Agreement with Relief providing for the development and commercialization of ACER-001 for the treatment of various inborn errors of metabolism, including for the treatment of UCDs and MSUD. The Company received a $10.0 million cash payment from Relief (consisting of a $14.0 million “Reimbursement Payment” from Relief to the Company offset by payment of the $4.0 million outstanding balance of the Note plus interest earned through the date of the Collaboration Agreement) and Relief released its security interest in all of the Company’s assets pursuant to the Promissory Note. Under the terms of the Collaboration Agreement, Relief committed to pay the Company up to an additional $20.0 million for U.S. development and commercial launch costs for the UCDs and MSUD indications (the “Development Payments”). During the three months ended June 30, 2021, the Company received from Relief the $10.0 million First Development Payment. The Company was contractually entitled to receive from Relief an additional $10.0 million Second Development Payment conditioned upon FDA’s acceptance of a New Drug Application (“NDA”) for ACER-001 in a UCD for filing and review. This acceptance was received on October 4, 2021. On October 6, 2021, the Company entered into a Waiver and Agreement with Relief to amend the timing for the Second Development Payment. The Company received the Second Development Payment in two $5.0 million tranches on each of October 12, 2021 and January 14, 2022. Further, the Company retained development and commercialization rights in the U.S., Canada, Brazil, Turkey, and Japan (“Acer Territory”). The companies will split net profits from the Acer Territory 60%:40% in favor of Relief. Relief licensed the rights for the rest of the world (“Relief Territory”), where the Company will receive from Relief a 15% royalty on all net sales received in the Relief Territory. The Company could also receive a total of $6.0 million in milestone payments based on the first European marketing approvals of ACER-001 for a UCD and MSUD. There is no guarantee that ACER-001 will receive regulatory authority approval in any territory or become commercially available for the indications under investigation. The terms of the Collaboration Agreement and Option Agreement are further described below in the Revenue Recognition and Accounting for Collaboration Agreements section of Note 2, Significant Accounting Policies. 

On March 4, 2022, the Company entered into a Credit Agreement (the “SWK Credit Agreement”) with the lenders party thereto and SWK Funding LLC (“SWK”), as the agent, sole lead arranger and sole bookrunner, which provided for a senior secured term loan facility in an aggregate amount of $6.5 million in a single borrowing (the “Bridge Loan”). The Bridge Loan funding closed on March 14, 2022. The proceeds of the Bridge Loan were used to pay fees, costs and expenses related to the SWK Credit Agreement, the Secured Convertible Note Purchase Agreement (as defined and described below) and the Marathon Credit Agreement (as defined and described below) and for other working capital and general corporate purposes.

The Bridge Loan bears interest at an annual rate of the sum of (i) 3-month LIBOR (or such other rate as may be agreed by the Company and SWK following the date on which 3-month LIBOR is no longer available), subject to a 1% floor, plus (ii) a margin of 11%, with such interest payable quarterly in arrears. In the event of default, the interest rate will increase by 3% per annum over the contract rate effective at the time of default but shall not be higher than the maximum rate permitted to be charged by applicable laws. The Company has the option to capitalize such interest commencing on the date on which the Bridge Loan was funded and continuing until November 15, 2022. Commencing on November 15, 2022, the principal amount of the Bridge Loan will amortize at a rate of $0.7 million, payable quarterly. The final maturity date of the Bridge Loan is (a) if full approval by FDA for marketing of ACER-001 (“ACER-001 Approval”) occurs on or before September 30, 2022, then the date which is 12 business days after ACER-001 Approval, or (b) if ACER-001 Approval does not occur on or before September 30, 2022, then March 4, 2024. The Company has the option to prepay the Bridge Loan in whole or in part. Upon the repayment of the Bridge Loan (whether voluntary or at scheduled maturity), the Company must pay an exit fee so that SWK receives an aggregate amount (inclusive of all principal, interest and origination and other fees paid to SWK under the SWK Credit Agreement on or prior to the prepayment date) equal to (a) 1.3 times the outstanding principal amount of the Bridge Loan, plus any and all payment-in-kind interest payments, if ACER-001 Approval or such payment occurs on or prior to September 30, 2022, or (b) 1.5 times the outstanding principal amount of the Bridge Loan, plus any and all payment-in-kind interest amounts, if each of ACER-001 Approval and such payment does not occur until after September 30, 2022. Under the Bridge Loan, the Company was required to maintain a cash and cash equivalents balance of not less than $4.0 million as of 20 days following receipt of FDA’s Complete Response Letter in June 2022 with respect to the Company’s NDA in respect of ACER-001 (sodium phenylbutyrate) for oral suspension for the treatment of patients with UCDs and is then required to maintain a cash and cash equivalents balance of not less than $6.5 million as of 40 days following receipt of that Complete Response Letter for the remainder of the time that the Bridge Loan is outstanding. The minimum cash balance would be reduced to $2.0 million in the event of positive safety and efficacy data for ACER-801 from a Phase 2a trial.

The Bridge Loan is secured by a first priority lien on all assets of the Company and any of its future subsidiaries pursuant to a Guarantee and Collateral Agreement entered into on March 4, 2022, between the Company and SWK, as agent (the “SWK Security Agreement”). The SWK Credit Agreement contains customary representations and warranties and affirmative and negative covenants. The Company paid to SWK $0.1 million in origination fees on the date on which the Bridge Loan was funded.

In addition, the Company issued a warrant (the “SWK Warrant”) to purchase 150,000 shares of the Company’s common stock at an exercise price of $2.46 per share. SWK may exercise the SWK Warrant in accordance with the terms thereof for all or any part of such shares of common stock from the date on which the Bridge Loan was funded until and including March 4, 2029.

On March 4, 2022, the Company also entered into a Secured Convertible Note Purchase Agreement with MAM Aardvark, LLC (“Marathon”) and Marathon Healthcare Finance Fund, L.P. (“Marathon Fund” and together with “Marathon” each a “Holder” and collectively the “Holders”) (the “Secured Convertible Note Purchase Agreement”) pursuant to which the Company issued and sold to the Holders secured convertible notes (the “Secured Convertible Notes”) in an aggregate amount of up to $6.0 million (the “Convertible Note Financing”). The Convertible Note Financing closed on March 14, 2022. The proceeds of the Convertible Note Financing are being used to pay fees, costs and expenses related to the SWK Credit Agreement, the Secured Convertible Note Purchase Agreement and the Marathon Credit Agreement and for other working capital and general corporate purposes.

The Secured Convertible Notes bear interest at an annual rate of 6.5%, with such interest payable quarterly; provided, however, that until the first to occur of ACER-001 Approval and the repayment in full of the Bridge Loan, interest will not be payable in cash, but will accrue and be payable in cash upon the earlier of a) the repayment of all obligations under the Bridge Loan and termination of such Bridge Loan or b) within three business days of ACER-001 Approval. Subject to the restrictions set forth in an agreement among each of the Holders and SWK, as agent and lender, and any other intercreditor or subordination agreement entered into in connection with the Term Loan (defined below), each of the Holders has the right, during the 30-day periods beginning 12 months, 18 months and 24 months after the closing date of the Convertible Note Financing, to require the Company to redeem the Convertible Secured Note held by such Holder at a redemption price of the outstanding principal amount plus any accrued but unpaid interest. Each of the Holders also has the right to convert all or any portion of the outstanding principal amount plus any accrued but unpaid interest under the Convertible Secured Note held by such Holder into shares of common stock at a conversion price of $2.50 per share, subject to adjustment. Each Holder has certain rights with respect to the registration by the Company for resale of the shares of common stock issuable upon conversion of the Secured Convertible Note held by such Holder which are forth in the Secured Convertible Note Purchase Agreement. Any outstanding principal, together with all accrued and unpaid interest, will be payable on the earlier of the third anniversary of the date of issuance, or upon a change of control of the Company.

Pursuant to the Secured Convertible Note Purchase Agreement, the Secured Convertible Notes are secured by a lien on collateral representing substantially all assets of the Company, although such security interest is subordinated to the Company’s obligations under the SWK Credit Agreement and may also be subordinated to the Company’s obligations under the Marathon Credit Agreement.

On March 4, 2022, the Company also entered into a Credit Agreement (the “Marathon Credit Agreement”) with the lenders party thereto and Marathon, as the agent, sole lead arranger and sole bookrunner, which provides for a senior secured term loan facility in an aggregate amount of up to $42.5 million in a single borrowing (the “Term Loan”). The Term Loan will be available to be borrowed only following ACER-001 Approval and until December 31, 2022 (i.e., if ACER-001 Approval does not occur on or before December 31, 2022, then the Term Loan will not be available unless the Company is able to obtain an extension for the time period beyond December 31, 2022, to the actual PDUFA target action date), and funding of the Term Loan is also subject to the satisfaction of conditions as set forth in the Marathon Credit Agreement. Although the Company’s resubmitted NDA in respect of ACER-001 (sodium phenylbutyrate) for oral suspension for the treatment of patients with UCDs has been accepted for substantive review by FDA, the Prescription Drug User Fee Act (“PDUFA”) target action date is January 15, 2023. The Term Loan, if it becomes available, will be used to refinance certain other indebtedness of the Company (including the Bridge Loan), to pay fees, costs and expenses related to the Marathon Credit Agreement and for other working capital and general corporate purposes. Should the Term Loan become available, the Company will pay Marathon a commitment fee equal to 1.5% of the Term Loan amount. The Marathon Credit Agreement also includes an accordion feature pursuant to which the Company, Marathon and the lenders under the Marathon Credit Agreement may agree to increase the Term Loan commitments by up to an additional $50.0 million dollars for a total commitment of $92.5 million; provided, however, that any such increase is within the sole discretion of each party (i.e., the Company cannot unilaterally trigger such an increase).

The Term Loan would bear interest at an annual rate of 13.5% and would be payable quarterly in arrears. The Company would have the option to capitalize up to 4% of such interest commencing on the date on which the Term Loan is funded (the “Term Loan Funding Date”) and continuing until the third anniversary of the Term Loan Funding Date. Commencing on the third anniversary of the Term Loan Funding Date, the principal outstanding amount of the Term Loan would amortize at a rate of 2.78%, payable monthly. The final maturity date of the Term Loan would be the earlier of six years after the Term Loan Funding Date or December 31, 2028. The Company would have the option to prepay the Term Loan in whole or in part at any time, subject to a prepayment fee equal to (a) if the prepayment is made prior to March 4, 2025, then the greater of 5% or the amount of interest that would have accrued from the

date of prepayment until March 4, 2025, (b) if the prepayment is made on or after March 4, 2025, but prior to March 4, 2026, then 3%, (c) if the prepayment is made on or after March 4, 2026, but prior to March 4, 2027, then 2%, or (d) if the prepayment is made on or after March 4, 2027, then 1%.

The Term Loan would be secured by a first priority lien on all assets of the Company and any of its future subsidiaries pursuant to a Guarantee and Collateral Agreement to be entered into on the Term Loan Funding Date between the Company and Marathon, as agent (the “Marathon Security Agreement”). The Marathon Credit Agreement contains customary representations and warranties and affirmative and negative covenants. The Company paid $0.2 million in commitment fees to Marathon in connection with obtaining the commitments in respect of the Term Loan and will pay $0.6 million in additional commitment fees to Marathon following ACER-001 Approval or any change of control of the Company or sale or transfer of the ACER-001 product. 

In connection with the Marathon Credit Agreement, on March 4, 2022, the Company, Marathon and the Marathon Fund also entered into a Synthetic Royalty Agreement (the “Royalty Agreement”) pursuant to which, in the event of the funding of the Term Loan, the Company will pay Marathon and the Marathon Fund, on a quarterly basis, 2% of certain aggregate commercial revenue from sales of ACER-001 during that quarter (i.e., 2% of the net sales and of the amount of certain other payments), subject to a cap on the aggregate amount of such payments of $15.0 million. Upon a change of control of the Company or the sale of the ACER-001 business to a third party, the Company would pay Marathon and the Marathon Fund the difference between $15.0 million and the aggregate amount of the payments previously made by the Company to Marathon and the Marathon Fund pursuant to the Royalty Agreement.

The Company’s cash and cash equivalents available at June 30, 2022 are expected to be sufficient to fund its anticipated operating and capital requirements through the third quarter of 2022.

Management expects to continue to finance operations through the issuance of additional equity or debt securities, non-dilutive funding, and/or through strategic collaborations. Any transactions which occur may contain covenants that restrict the ability of management to operate the business and any securities issued may have rights, preferences, or privileges senior to the Company’s common stock and may dilute the ownership of current stockholders of the Company.

Going Concern

The accompanying financial statements have been prepared in conformity with accounting principles generally accepted in the U.S. (“GAAP”), which contemplate continuation of the Company as a going concern. The Company has not established a source of commercial product revenues and, as such, has been dependent on funding operations through the sale of equity securities, through a collaboration agreement, and through debt instruments. Since inception, the Company has experienced significant losses and incurred negative cash flows from operations. The Company has spent, and expects to continue to spend, a substantial amount of funds in connection with implementing its business strategy, including its planned product development efforts and potential precommercial activities.

As of June 30, 2022, the Company had cash and cash equivalents of $14.5 million and current liabilities of $17.5 million, which include $6.3 million associated with deferred collaboration funding (see Revenue Recognition and Accounting for Collaboration Agreements below in Note 2, Significant Accounting Policies). The Company’s cash and cash equivalents available at June 30, 2022 are expected to be sufficient to fund its anticipated operating and capital requirements through the third quarter of 2022.

The Company will need to raise additional capital to fund continued operations beyond the third quarter of 2022 because neither FDA approval of ACER-001 nor subsequent product revenues are assured. The Company may not be successful in its efforts to raise additional funds or achieve profitable operations. The Company continues to explore potential opportunities and alternatives to obtain the additional resources that will be necessary to support its ongoing operations beyond the third quarter of 2022, including raising additional capital through either private or public equity or debt financing or additional program collaborations or non-dilutive funding, as well as using its ATM facility which has $36.7 million available as of June 30, 2022 and/or its remaining $11.8 million available under the equity line facility entered into on April 30, 2020 with Lincoln Park. (See At-the-Market Facility and Common Stock Purchase Agreement below in Note 9.) Due to the SEC’s “baby shelf rules,” which prohibit companies with a public float of less than $75 million from issuing securities under a shelf registration statement in excess of one-third of such company’s public float in a 12-month period, the Company is currently only able to issue a limited number of shares under its ATM facility which aggregate to no more than one-third of its public float. Additionally, there can be no assurance that the Company will be able to receive the entire obligation amount from Lincoln Park because the purchase agreement contains limitations, restrictions, requirements, events of default, and other provisions that could limit the Company’s ability to cause Lincoln Park to buy common stock from the Company. As noted above, the Company also has available to it the $42.5 million Term Loan conditional upon the approval of ACER-001 by FDA; provided, however, that if ACER-001 Approval does not occur on or before December 31, 2022, then the Term Loan will not be available unless the Company is able to obtain an extension for the time period beyond December 31, 2022, to the actual PDUFA target action date. The PDUFA target action date for the Company’s resubmitted NDA in respect of ACER-001 (sodium phenylbutyrate) for oral suspension for the treatments of patients with UCDs is January 15, 2023. The Company has no commitments for any additional financing, except for the agreement with Lincoln Park, and the Marathon Credit Agreement for the Term Loan. Any

amounts raised will be used for further development of its product candidates, precommercial activities, and for other working capital purposes.

If the Company is unable to obtain additional funding to support its current or proposed activities and operations, it may not be able to continue its operations as currently anticipated, which may require it to suspend or terminate any ongoing development activities, modify its business plan, curtail various aspects of its operations, cease operations, or seek relief under applicable bankruptcy laws. In such event, the Company’s stockholders may lose a substantial portion or even all of their investment.

These factors individually and collectively raise substantial doubt about the Company’s ability to continue as a going concern for at least 12 months from the date these financial statements are available, or August 15, 2023. The accompanying unaudited condensed financial statements do not include any adjustments or classifications that may result from the possible inability of the Company to continue as a going concern.

Basis of Presentation

The accompanying condensed financial statements are unaudited and have been prepared in accordance with GAAP for interim financial information and with the instructions to Form 10-Q and Regulation S-X. The unaudited condensed financial statements have been prepared on the same basis as the audited annual financial statements and reflect, in the opinion of management, all adjustments of a normal and recurring nature that are necessary for the fair presentation of the Company’s financial position, results of operations, stockholders’ (deficit) equity and cash flows for the periods presented. The results of operations for the three and six months ended June 30, 2022 are not necessarily indicative of the results to be expected for the year ending December 31, 2022 or for any other future annual or interim period. The condensed balance sheet as of December 31, 2021, included herein, was derived from the audited financial statements as of that date but does not include all disclosures required by GAAP. These unaudited financial statements should be read in conjunction with the Company’s audited financial statements included in its Annual Report on Form 10-K for the year ended December 31, 2021.

Any reference in these notes to applicable guidance is meant to refer to the authoritative GAAP as found in the Accounting Standards Codification (“ASC”) and Accounting Standards Update (“ASU”) of the Financial Accounting Standards Board (“FASB”).

Restatement of Previously Issued Financial Statements

The Company has restated its previously reported unaudited condensed interim financial statements for the three and six months ended June 30, 2022. The restatement reflects the addition of “if converted” treatment of the Secured Convertible Notes in the Company’s calculation of its diluted EPS as well as related information in the Notes to Unaudited Condensed Interim Financial Statements. The following table presents the effects of the error correction on the Company’s Unaudited Condensed Interim Statement of Operations for the three and six months ended June 30, 2022, by showing basic net loss per share as previously reported, and additional disclosure of diluted loss per share and diluted weighted average common shares outstanding applying the “if converted” method to the Secured Convertible Notes as described above.

	Three Months Ended June 30,						Six Months Ended June 30,
	2022			2021			2022			2021
Net loss per share – basic (as restated)	$	(0.17	)	$	(0.21	)	$	(0.80	)	$	(0.54	)
Weighted average common shares outstanding – basic (as restated)		15,273,707			14,310,244			14,794,637			14,225,551
Net loss per share – diluted (as restated) (1)	$	(0.30	)	$	(0.21	)	$	(0.83	)	$	(0.54	)
Weighted average common shares outstanding – diluted (as restated)		17,681,400			14,310,244			16,372,537			14,225,551

(1) In calculating diluted net loss per share, we excluded the impact of changes in the fair value of the Secured Convertible Notes of $2.6 million and $1.7 million, for the three and six months ended June 30, 2022, respectively. Included in the denominator using the “if-converted” method during the three and six months ended June 30, 2022, are the 2,407,693 shares and 1,577,900 shares, respectively, associated with the original principal amount of the Secured Convertible Notes and the assumed conversion of accrued interest owed at the beginning of the period.

Refer to Note 10, “Net Loss Per Share,” and Note 2 “Significant Accounting Policies, Basic and Diluted Net Loss per Common Share” to these unaudited condensed financial statements included in this form 10-Q/A for more information regarding the impact of correcting the error on the Company’s consolidated financial statements.

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Significant Accounting Policies (As Restated)

6 Months Ended

Jun. 30, 2022

Accounting Policies [Abstract]

Significant Accounting Policies (As Restated)

2. SIGNIFICANT ACCOUNTING POLICIES (AS RESTATED)

The Company’s significant accounting policies are described in Note 2, “Significant Accounting Policies,” in its Annual Report on Form 10-K for the year ended December 31, 2021.

Use of Estimates

The Company’s accounting principles require management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of assets and liabilities at the date of the condensed financial statements and reported amounts of revenues and expenses during the reporting period. From time to time, estimates having relatively higher significance include determination of stand-alone selling price and variable consideration estimates for purposes of revenue recognition, deferred collaboration funding, stock-based compensation, inputs to fair value for debt, contract manufacturing and clinical trial accruals, and income taxes. Actual results could differ from those estimates and changes in estimates may occur.

Revenue Recognition and Accounting for Collaboration Agreements

The Company’s revenues are generated from a single collaboration agreement which included the sale of a license of intellectual property. The Company analyzes its collaboration agreements to assess whether they are within the scope of ASC Topic 808, Collaborative Arrangements, (“ASC 808”) to determine whether such arrangements involve joint operating activities performed by parties that are both active participants in the activities and exposed to significant risks and rewards that are dependent on the commercial success of such activities. To the extent the arrangement is within the scope of ASC 808, the Company assesses whether aspects of the arrangement between the Company and the collaboration partner are within the scope of other accounting literature. If the Company concludes that some or all aspects of the arrangement represent a transaction with a customer, the Company accounts for those aspects of the arrangement within the scope of ASC Topic 606, Revenue from Contracts with Customers (“ASC 606”). If the Company concludes that some or all aspects of the arrangement are within the scope of ASC 808 and do not represent a transaction with a customer, the Company recognizes the Company’s share of the allocation of the shared costs incurred with respect to the jointly conducted activities as a component of the related expense in the period incurred. Pursuant to ASC 606, a customer is a party that has contracted with an entity to obtain goods or services that are an output of the entity’s ordinary activities in exchange for consideration. Under ASC 606, an entity 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. If the Company concludes a counter-party to a transaction is not a customer or otherwise not within the scope of ASC 606 or ASC 808, the Company considers the guidance in other accounting literature as applicable or by analogy to account for such transaction.

The Company determines the units of account within the collaborative arrangement utilizing the guidance in ASC 606 to determine which promised goods or services are distinct. In order for a promised good or service to be considered “distinct” under ASC 606, 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 (i.e., the good or service is capable of being distinct), and the entity’s promise to transfer the good or service to the customer is separately identifiable from other promises in the contract (i.e., the promise to transfer the good or service is distinct within the context of the contract).

For any units of account that fall within the scope of ASC 606, where the other party is a customer, the Company evaluates the separate performance obligation(s) under each contract, determines the transaction price, allocates the transaction price to each performance obligation considering the estimated stand-alone selling prices of the services and recognizes revenue upon the satisfaction of such obligations at a point in time or over time dependent on the satisfaction of one of the following criteria: (1) the customer simultaneously receives and consumes the economic benefits provided by the vendor’s performance; (2) the vendor creates or enhances an asset controlled by the customer; and (3) the vendor’s performance does not create an asset for which the vendor has an alternative use and the vendor has an enforceable right to payment for performance completed to date.

Variable consideration is included in the transaction price only to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved.

Revenue for a sales-based or usage-based royalty promised in exchange for a license of intellectual property is recognized only when (or as) the later of the following events occurs: (i) the subsequent sale or usage occurs; or (ii) the performance obligation to which some or all of the sales-based or usage-based royalty has been allocated has been satisfied (or partially satisfied).

On January 25, 2021, the Company entered into the Option Agreement with Relief pursuant to which the Company granted Relief the Exclusivity Option to pursue a potential collaboration and license arrangement with the Company for the development, regulatory approval and commercialization of ACER-001 for the treatment of various inborn errors of metabolism, including UCDs and MSUD. The Option Agreement provided a period of time up to June 30, 2021 for the parties to perform additional due diligence and to work toward negotiation and execution of a definitive agreement with respect to the potential collaboration for ACER‑001. In consideration for the grant of the Exclusivity Option, (i) the Company received from Relief an upfront nonrefundable payment of $1.0 million, (ii) Relief provided to the Company a 12-month secured loan in the principal amount of $4.0 million, as evidenced by the Note issued by the Company to Relief, and (iii) the Company granted to Relief a security interest in all of its assets to secure performance of the Note, as evidenced by the Security Agreement. The Note was repayable in one lump sum within 12 months from issuance and bore interest at a rate equal to 6% per annum. If a definitive agreement with respect to the potential collaboration had not been executed by the parties on or before June 30, 2021, the Exclusivity Option would have terminated and the Note would have been repayable by the Company upon maturity.

On March 19, 2021, the Company entered into the Collaboration Agreement with Relief providing for the development and commercialization of ACER-001 for the treatment of various inborn errors of metabolism, including for the treatment of UCDs and MSUD. The Company received a $10.0 million cash payment from Relief (consisting of a $14.0 million “Reimbursement Payment” from Relief to the Company offset by repayment of the $4.0 million outstanding balance of the Note, plus interest earned through the date of the Collaboration Agreement), and Relief released its security interest in all of the Company’s assets pursuant to the Promissory Note. Under the terms of the Collaboration Agreement, Relief committed to pay the Company up to an additional $20.0 million for U.S. development and commercial launch costs for the UCDs and MSUD indications. During the three months ended June 30, 2021, the Company received from Relief the $10.0 million First Development Payment. The Company was contractually entitled to receive from Relief an additional $10.0 million Second Development Payment conditioned upon FDA’s acceptance of an NDA for ACER-001 in a UCD for filing and review. This acceptance was received on October 4, 2021. On October 6, 2021, the Company entered into a Waiver and Agreement with Relief to amend the timing for the Second Development Payment. The Company received the Second Development Payment in two $5.0 million tranches on each of October 12, 2021 and January 14, 2022. Further, the Company retained development and commercialization rights in the U.S., Canada, Brazil, Turkey and Japan (“Acer Territory”). The companies will split net profits from the Acer Territory 60%:40% in favor of Relief. Relief licensed the rights for the rest of the world (“Relief Territory”), where the Company will receive from Relief a 15% royalty on all net sales received in the Relief Territory. The Company could also receive a total of $6.0 million in milestone payments based on the first European (EU) marketing approvals for a UCD and MSUD. There is no guarantee that ACER-001 will receive regulatory authority approval in any territory or become commercially available for the indications under investigation.

The Company assessed these agreements in accordance with the authoritative literature and concluded that they meet the definition of a collaborative arrangement per ASC 808. For certain parts of the Collaboration Agreement, the Company concluded that Relief represented a customer while, for other parts of the Collaboration Agreement, Relief did not represent a customer. The units of account of the Collaboration Agreement where Relief does not represent a customer are outside of the scope of ASC 606. The Company also determined that the development and commercialization services and Relief’s right to 60% profit in the Acer Territory is within the scope of ASC 730, with regard to funded research and development arrangements.

The Company concluded the promised goods and services contained in the Collaboration Agreement, represented two distinct units of account consisting of a license in the Relief Territory, and a combined promise for the development and commercialization of ACER-001 in the Acer Territory and the payment of 60% net profit from that territory (together, the “Services”). The stand-alone selling price was estimated for each distinct unit of account utilizing an estimate of discounted cashflows associated with each.

The Company determined that the transaction price at the outset of the Collaboration Agreement was $25.0 million, including the Option Fee of $1.0 million, the Reimbursement Payment of $14.0 million, and the First Development Payment of $10.0 million. The Company concluded that consistent with the evaluation of variable consideration, using the most likely amount approach, the Second Development Payment as well as the milestone payments for EU marketing approvals, should be fully constrained until the contingency associated with each payment has been resolved and the Company’s NDA is accepted for review by FDA, and Relief receives EU marketing approval, respectively.

Since ASC 808 does not provide recognition and measurement guidance for collaborative arrangements, the Company applied the principles of ASC 606 for those units of account where Relief is a customer and ASC 730-20 for the funded research and development activities. The license revenue was recognized at the point where the Company determined control was transferred to the customer. The combined unit of account for the Services associated with the allocation of the initial transaction price will be recognized over the service period through the anticipated date of first commercial sale of the ACER-001 approved product in the U.S. The Company also determined that the Services associated with the allocation of the initial transaction price would be satisfied

over time as measured using actual costs as incurred by the Company toward the identified development and commercialization services agreed to between the parties up to the point of first commercial sale of the ACER-001 product. Research and development expenses and general and administrative expenses, as they relate to activities governed by the Collaboration Agreement, incurred in satisfying the Services unit-of-account will be recognized as contra-expense within their respective categories, consistent with the presentation guidance in ASC Topic 730, Research and Development (“ASC 730”).

The Company recognizes a receivable under the Collaboration Agreement when the consideration to be received is deemed unconditional, or when only the passage of time is required before payment of that consideration is due. Amounts receivable under the Collaboration Agreement plus payments received from Relief, net of the amounts recorded as license revenue and as offsets to research and development expenses and to general and administrative expenses, are reported as deferred collaboration funding.

At June 30, 2022, the amount of deferred collaboration funding associated with unsatisfied promises under the Collaboration Agreement amounted to $14.2 million. The Company has recorded $6.3 million as a current liability, which equates to the Company’s estimate of remaining spending under the Collaboration Agreement and which the Company estimates will be recognized within the next 12 months up to the point of the first commercial sale of ACER-001. The remaining balance of $7.9 million is recorded as a non-current liability and represents the estimated amount that would be taken against future net profit payments made to Relief should they occur. The Company expects to recognize this deferred collaboration funding as it incurs expenses associated with performing the Services up to the date of first commercial sale in the Acer Territory and through the end of the effective date of the Collaboration Agreement. At June 30, 2022, deferred collaboration funding was composed of $35.0 million received from Relief, offset by $1.3 million recognized as license revenue during the year ended December 31, 2021 and $10.7 million recorded as an offset to research and development expenses and $8.8 million recorded as an offset to general and administrative expenses subsequent to signing the Collaboration Agreement and through the date of this report.

Cash and Cash Equivalents

The Company considers all highly liquid investments with maturities of three months or less at the date of purchase to be cash equivalents. Financial instruments that potentially subject the Company to concentration of credit risk consist principally of cash deposits. Accounts at each institution are insured by the Federal Deposit Insurance Corporation (“FDIC”) up to $250,000. At June 30, 2022 and December 31, 2021, the Company had $14.2 million and $12.5 million, respectively, in excess of the FDIC insured limit.

Under the Bridge Loan, the Company was required to maintain a cash and cash equivalents balance of not less than $4.0 million as of 20 days following receipt of FDA’s Complete Response Letter in June 2022 with respect to the Company’s NDA in respect of ACER-001 (sodium phenylbutyrate) for oral suspension for the treatment of patients with UCDs and is then required to maintain a cash and cash equivalents balance of not less than $6.5 million as of 40 days following receipt of that Complete Response Letter for the remainder of the time that the Bridge Loan is outstanding. The minimum cash balance would be reduced to $2.0 million in the event of positive safety and efficacy data for ACER-801 from a Phase 2a trial.

The Company recognized a $4.0 million non-cash reduction in a secured loan from Relief during the six months ended June 30, 2021, since the Reimbursement Payment from Relief was received net of the amount of principal and interest due in connection with the secured loan.

Fair Value of Financial Instruments

ASC Topic 820, Fair Value Measurement (“ASC 820”), establishes a fair value hierarchy for instruments measured at fair value that distinguishes between assumptions based on market data (observable inputs) and the Company’s own assumptions (unobservable inputs). 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 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.

ASC 820 identifies fair value as the exchange price, or exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As a basis for considering market participant assumptions in fair value measurements, ASC 820 establishes a three-tier fair value hierarchy that distinguishes among the following:

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

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

•            Level 3—Valuations based on inputs that are unobservable and significant to the overall fair value measurement.

To the extent that the 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.

Financial instruments consist of cash equivalents, collaboration receivable, accounts payable, accrued expenses, and debt instruments. These financial instruments are stated at their respective historical carrying amounts, which approximate fair value due to their short-term nature, except for cash equivalents and debt instruments, which were marked to market at the end of each reporting period. See Note 7 for additional information on the fair value of the debt liabilities.

The Company elected the fair value option for both its Bridge Loan and its Secured Convertible Notes dated March 14, 2022 (see Note 7). The Company adjusts both the Bridge Loan and the Secured Convertible Notes to fair value through the change in fair value of debt in the accompanying unaudited condensed statements of operations. Subsequent unrealized gains and losses on items for which the fair value option is elected are reported in the accompanying unaudited condensed statement of operations.

Debt

Convertible notes are regarded as compound instruments, consisting of a liability component and an equity component. The Company determined that it is eligible for the fair value option election in connection with the Bridge Loan and the Secured Convertible Notes. Each instrument met the definition of a “recognized financial liability” which is an acceptable financial instrument eligible for the fair value option under ASC 825-10-15-4 and do not meet the definition of any of the financial instruments found within ASC 825-10-15-5 that are not eligible for the fair value option. At the date of issuance, the fair value for each instrument is derived from the instrument’s implied discount rate at inception.

Research and Development Expenses

Research and development costs are expensed as incurred and include compensation and related benefits, license fees and third-party contracted research and manufacturing consultants. The Company sometimes makes nonrefundable advance payments for goods and services that will be used in future research and development activities. These payments are capitalized and recorded as an expense in the period that the goods are received or that the services are performed. From time to time, in connection with the Collaboration Agreement with Relief, the Company may recognize “contra-expense” for the research and development activities which were funded by the Collaboration Agreement. These contra-expense amounts are disclosed parenthetically on the face of the financial statements.

General and Administrative Expenses

General and administrative expenses consist primarily of employee-related expenses, including salaries, benefits, and stock-based compensation; precommercial costs; and professional fees for legal, business consulting, auditing, and tax services. The Company expects that general and administrative expenses will be substantial in the future. From time to time, in connection with the Collaboration Agreement with Relief, the Company may recognize “contra-expense” for the general and administrative activities which were funded by the Collaboration Agreement. These contra-expense amounts are disclosed parenthetically on the face of the financial statements.

Clinical Trial and Preclinical Study Expenses

The Company makes estimates of prepaid and/or accrued expenses as of each balance sheet date in its financial statements based on certain facts and circumstances at that time. The Company’s accrued expenses for preclinical studies and clinical trials are based on estimates of costs incurred for services provided by contract research organizations (“CROs”), manufacturing organizations, and for other trial- and study-related activities. Payments under the Company’s agreements with external service providers depend on a number of factors such as site initiation, patient screening, enrollment, delivery of reports, and other events. In accruing for these activities, the Company obtains information from various sources and estimates the level of effort or expense allocated to each period. Adjustments to research and development expenses may be necessary in future periods as the Company’s estimates change. As these activities are generally material to the Company’s financial statements, subsequent changes in estimates may result in a material change in the Company’s accruals. No material changes in estimates were recognized in either of the three or six months ended June 30, 2022 or 2021. Accounts payable and accrued expenses include costs associated with preclinical or clinical studies of $0.3 million and $0.2 million at June 30, 2022 and December 31, 2021, respectively.

Stock-Based Compensation

The Company records stock-based payments at fair value. The measurement date for compensation expense related to awards is generally the date of the grant. The fair value of awards is recognized as an expense in the condensed statements of operations over the requisite service period, which is generally the vesting period. The fair value of options is calculated using the Black-Scholes option pricing model. A limited number of option grants are periodically made to non-employee contractors, and the Company utilizes the simplified method to value these awards. This option valuation model requires the use of assumptions including, among others, the volatility of stock price, the expected term of the option, and the risk-free interest rate.

The following assumptions were used to estimate the fair value of stock options granted during the six months ended June 30, 2022 and 2021 using the Black-Scholes option pricing model:

	2022	2021
Risk-free interest rate	1.18%-1.83%	0.37%- 0.62%
Expected life (years)	6.25	6.25
Expected volatility	113.0% - 115.0%	92.4%
Dividend rate	0%	0%

Due to its limited operating history and a limited trading history of its common stock in relation to the life of its standard option grants, the Company estimates the volatility of its stock in consideration of a number of factors including the Company’s available stock price history and the stock price volatility of comparable public companies. The expected term of a stock option granted to employees and directors (including non-employee directors) is based on the average of the contractual term (generally ten years) and the vesting period. For other non-employee options, the expected term is the contractual term. The assumed dividend yield is based upon the Company’s expectation of not paying dividends in the foreseeable future.  The Company recognizes forfeitures related to employee stock-based awards as they occur. The risk-free rate for periods within the expected life of the option is based upon the U.S. Treasury yield curve in effect at the time of grant. Option awards are granted at an exercise price equal to the closing market price of the Company’s common stock on the Nasdaq Capital Market on the date of grant.

Goodwill

Goodwill represents the excess of the purchase price (consideration paid plus net liabilities assumed) of an acquired business over the fair value of the underlying net tangible and intangible assets. The Company’s goodwill is allocated to the Company’s single reporting unit. The Company evaluates the recoverability of goodwill according to ASC Topic 350, Intangibles – Goodwill and Other annually, or more frequently if events or changes in circumstances indicate that the carrying value of goodwill might be impaired. The Company may opt to perform a qualitative assessment or a quantitative impairment test to determine whether goodwill is impaired. If the Company were to determine based on a qualitative assessment that it was more likely than not that the fair value of the reporting unit was less than its carrying value, a quantitative impairment test would then be performed. The quantitative impairment test compares the fair value of the reporting unit with its carrying amount, including goodwill. If the estimated fair value of the reporting unit is less than its carrying amount, a goodwill impairment would be recognized for the difference. The Company performed a qualitative analysis of goodwill as of June 21, 2022 as it considered the Complete Response Letter received from FDA in June 2022 with respect to the Company’s NDA in respect of ACER-001 (sodium phenylbutyrate) for oral suspension for the treatment of patients with UCDs to be a triggering event requiring it to perform that analysis. Management concluded that it was more likely than not that the fair value of the reporting unit was greater than its carrying amount at June 30, 2022.

Foreign Currency Transaction Gain/(Loss)

Gains and losses arising from transactions and revaluation of balances denominated in currencies other than U.S. dollars are recorded in foreign currency transaction gain/(loss) on the statements of operations.

Income Taxes

The Company is primarily subject to U.S. federal and Massachusetts state income taxes. The Company’s tax returns for years 2015 through present are open to tax examinations by U.S. federal and state tax authorities; however, carryforward attributes that were generated prior to January 1, 2015 remain subject to adjustment upon examination if they either have been utilized or will be utilized in a future period. For federal and state income taxes, deferred tax assets and liabilities are recognized based upon temporary differences between the financial statement and the tax basis of assets and liabilities. Deferred income taxes are based upon prescribed rates and enacted laws applicable to periods in which differences are expected to reverse. The Company recorded no income tax expense or benefit during the three or six months ended June 30, 2022 and 2021, due to a full valuation allowance recognized against

its net deferred tax assets. A valuation allowance is recorded when it is more likely than not that some portion or all of the deferred tax assets will not be realized. Accordingly, the Company provides a valuation allowance, if necessary, to reduce deferred tax assets to amounts that are realizable. Utilization of net operating losses may be subject to substantial annual limitations due to the “change in ownership” provisions of the Internal Revenue Code of 1986, and similar state provisions. The annual limitations may result in the expiration of net operating losses before utilization.

The tax positions taken or expected to be taken in the course of preparing the Company’s tax returns are required to be evaluated to determine whether the tax positions are “more-likely-than-not” of being sustained by the applicable tax authority. Tax positions not deemed to meet a more-likely-than-not threshold would be recorded as a tax expense in the current year. There were no uncertain tax positions that require accrual or disclosure in the financial statements as of June 30, 2022 and 2021. The Company’s policy is to recognize interest and penalties related to income tax, if any, in income tax expense. As of June 30, 2022 and 2021, the Company had no accruals for interest or penalties related to income tax matters.

The Coronavirus Aid, Relief and Economic Security Act (the “CARES Act”) was enacted in the U.S. on March 27, 2020. The CARES Act, among other things, includes provisions relating to refundable payroll tax credits, deferment of employer side social security payments, net operating loss carryback periods, alternative minimum tax credit refunds, modifications to the net interest deduction limitations, increased limitations on qualified charitable contributions, and technical corrections to tax depreciation methods for qualified improvement property. The Company is required to recognize the effects of tax law changes in the period of enactment. The enactment of the CARES Act did not result in material adjustments for the income tax provision for the three or six months ended June 30, 2022 or to the Company’s assessment of the realizability of deferred tax assets as the carry back of net operating losses was used as a source of income. There were no other effects to the Company’s tax provision as a result of the CARES Act as of June 30, 2022.

Basic and Diluted Net Loss per Common Share (As Restated)

Basic and diluted net loss per common share is computed using the weighted average number of common shares outstanding during the period. Diluted net loss per share is computed using the sum of the weighted average number of common shares outstanding during the period and, in those instances where it would be dilutive, the weighted average number of potential shares of common stock, including the assumed exercise of stock options and warrants, the impact of unvested restricted stock, and the potential shares assuming conversion of convertible debt. Basic and diluted shares outstanding are the same for each period presented when all common stock equivalents, including potential shares from convertible debt and warrants, would be antidilutive due to the net losses incurred, except in certain instances as noted below.

The two-class method is an earnings allocation formula that treats a participating security such as a warrant as having rights to earnings that otherwise would have been available to common stockholders. However, the two-class method does not impact the net loss per share of common stock as the Company has been in a net loss position and while our warrants are considered a participating security, the terms of the warrant agreement does not obligate them to participate in losses. Diluted net income per share is computed using the more dilutive of (a) the two-class method or (b) the if-converted method or treasury stock method, as applicable, to the potentially dilutive instruments. A contract that may be settled in shares and is reported as an asset or liability for accounting purposes may require an adjustment to the numerator for any changes in income or loss that would result if the contract had been reported as an equity instrument for accounting purposes during the period, and doing so is dilutive to the net loss per share calculation (including as a result of the inclusion of underlying shares in the net loss per share calculation).

Recently Adopted Accounting Pronouncements

In August 2020, the FASB issued ASU No. 2020-06, Debt – Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging – Contracts in Entity’s Own Equity (Subtopic 815-40), which simplifies the accounting for convertible instruments by removing, in certain cases, the need for models that required separate accounting for embedded conversion features and also amends the guidance for the derivatives scope exceptions for contracts in an entity’s own equity. This ASU also requires expanded disclosures, including additional information related to the terms and features of convertible instruments and information about events or conditions that cause conversion contingencies to be met or conversion terms to be significantly changed. The Company early adopted ASU No. 2020-06 in the first quarter of 2021. See Note 6 regarding the Secured Convertible Notes which were recognized in the first quarter of 2022 consistent with the adoption of this guidance.

In May 2021, the FASB issued ASU No. 2021-04, Earnings Per Share (Topic 260), Debt—Modifications and Extinguishments (Subtopic 470-50), Compensation—Stock Compensation (Topic 718), and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40): Issuer’s Accounting for Certain Modifications or Exchanges of Freestanding Equity-Classified Written Call Options (a consensus of the FASB Emerging Issues Task Force), which clarifies and reduces diversity in issuers’ accounting for modifications or exchanges of freestanding equity-classified written call options that remain

equity classified after modification or exchange. The Company adopted ASU No. 2021-04 in the first quarter of 2022. There was no impact on the Company’s financial statements or disclosures as a result of the adoption of this guidance.

In November 2021, the FASB issued ASU No. 2021-10, Government Assistance (Topic 832): Disclosures by Business Entities about Government Assistance, which requires annual disclosures regarding transactions with a government that are accounted for by applying a grant or contribution accounting model. The Company adopted ASU No. 2021-10 in the fourth quarter of 2021. There was no impact on the Company’s financial statements or disclosures as a result of the adoption of this guidance.

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Property and Equipment

6 Months Ended

Jun. 30, 2022

Property Plant And Equipment [Abstract]

Property and Equipment

3. PROPERTY AND EQUIPMENT

Property and equipment consisted of the following at June 30, 2022 and December 31, 2021:

	June 30, 2022			December 31, 2021
Computer hardware and software	$	144,782		$	113,847
Leasehold improvements		52,887			60,535
Furniture and fixtures		106,698			145,487
Subtotal property and equipment, gross		304,367			319,869
Less accumulated depreciation		(202,785	)		(205,757	)
Property and equipment, net	$	101,582		$	114,112

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Accrued Expenses

6 Months Ended

Jun. 30, 2022

Accounts Payable And Accrued Liabilities Current [Abstract]

Accrued Expenses

4. ACCRUED EXPENSES

Accrued expenses consisted of the following at June 30, 2022 and December 31, 2021:

	June 30, 2022		December 31, 2021
Accrued payroll and payroll taxes	$	2,539,643	$	419,354
Accrued precommercial costs		1,120,435		395,923
Accrued contract manufacturing		935,710		827,390
Accrued accounting, audit, and tax fees		278,950		167,630
Accrued contract research and regulatory consulting		236,356		47,637
Accrued legal		212,291		162,812
Accrued consulting		103,855		105,085
Accrued license fees		78,015		86,259
Accrued miscellaneous expenses		62,709		216,103
Total accrued expenses	$	5,567,964	$	2,428,193

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Leases

6 Months Ended

Jun. 30, 2022

Leases [Abstract]

Leases

5. LEASES

On March 6, 2018, the Company entered into a lease agreement (the “Newton Lease”), commencing on October 1, 2018, for certain premises which consist of 2,760 square feet of office space located in Newton, Massachusetts. On March 5, 2019, the Company entered into a modified lease agreement (the “Additional Newton Lease”) to lease an additional 1,600 square feet of office space, commencing on June 1, 2019, located in Newton, Massachusetts. The Newton Lease expires on May 31, 2022. On October 15, 2021, the Company entered into a lease amendment extending the Additional Newton Lease through December 31, 2022. Effective with the expiration of the Newton Lease and the extension of the Newton Additional Lease, the space leased by the Company in Newton was reduced to 1,600 square feet as of June 1, 2022. The Company is required to share in certain taxes and operating expenses associated with the Newton Lease and the Additional Newton Lease.

The Company entered into a triple net lease (the “Bend Lease”) effective April 1, 2018 for certain premises consisting of 2,288 square feet of office space located in Bend, Oregon. On April 23, 2019, the Company entered into a modified lease agreement (the “Additional Bend Lease”) to lease an additional 1,389 square feet of office space, commencing on May 1, 2019, located in Bend, Oregon. On November 17, 2021, the Company entered into a lease agreement to extend the term of the Bend Lease and the Additional Bend Lease to June 30, 2022 and to further extend the term either (1) until June 30, 2027 if FDA approval of ACER-001 was received in June 2022, or (2) until June 30, 2025 if FDA approval of ACER-001 was not received in June 2022. As FDA approval of ACER-001 was not received in June 2022, the Company entered into a lease amendment in June 2022 such that the renewal term for this office space was extended until June 30, 2025.

The leases for the Newton and Bend office space are classified as operating leases. The leases contain immaterial provisions for rent holidays and rent escalations over the term of the leases, which have been included in the Company’s right of use asset and lease liabilities. In the year ended December 31, 2021, the Company recorded a non-cash transaction to recognize an additional $0.4 million right of use asset and lease liability in conjunction with the modifications to the leases. The Company’s lease liability as of June 30, 2022 and December 31, 2021 represents the net present value of future lease payments utilizing discount rates of 8% to 10%, which correspond to the Company’s incremental borrowing rates as of the effective dates of the leases. As of June 30, 2022, the weighted average remaining lease term was 2.7 years. The Company recorded expense of $0.1 million related to the leases for each of the three and six months ended June 30, 2022 and 2021. The Company made cash payments for amounts included in the measurement of lease liabilities of $0.1 million, during each of the three and six months ended June 30, 2022 and 2021. The Company reported a right-of-use asset of $0.3 million in Other non-current assets and lease liabilities totaling $0.3 million in Other current liabilities and Other non-current liabilities as of June 30, 2022.

The following table reconciles the undiscounted lease liabilities to the total lease liabilities recognized on the unaudited condensed balance sheet as of June 30, 2022:

Undiscounted lease liabilities for years ending December 31:
2022 (remaining)	$	60,317
2023		103,925
2024		107,290
2025		54,579
Total undiscounted lease liabilities		326,111
Less effects of discounting		(49,556	)
Total lease liabilities as of June 30, 2022	$	276,555

The Company’s lease liabilities are reported on the unaudited condensed balance sheets as follows:

	June 30, 2022		December 31, 2021
Other current liabilities	$	110,421	$	184,340
Other non-current liabilities		166,134		209,497
Total lease liabilities	$	276,555	$	393,837

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Debt

6 Months Ended

Jun. 30, 2022

Debt Disclosure [Abstract]

Debt

6. DEBT

SWK Credit Agreement

On March 4, 2022, the Company entered into the SWK Credit Agreement with the lenders party thereto and SWK, as the agent, sole lead arranger and sole bookrunner, which provides for a senior secured term loan facility in an aggregate amount of $6.5 million in a single borrowing (the “Bridge Loan”). The Bridge Loan closed on March 14, 2022, after consummation of the Convertible Note Financing (as defined and described below) as well as the satisfaction of other closing conditions as set forth in the SWK Credit Agreement. The proceeds of the Bridge Loan are being used to pay fees, costs and expenses related to the SWK Credit Agreement, the Secured Convertible Note Purchase Agreement (as defined and described below) and the Marathon Credit Agreement (as defined and described below) and for other working capital and general corporate purposes.

The Bridge Loan bears interest at an annual rate of the sum of (i) 3-month LIBOR (or such other rate as may be agreed by the Company and SWK following the date on which 3-month LIBOR is no longer available), subject to a 1% floor, plus (ii) a margin of 11%, with such interest payable quarterly in arrears. In the event of default, the interest rate will increase by 3% per annum over the contract rate effective at the time of default but shall not be higher than the maximum rate permitted to be charged by applicable laws. For the period ended June 30, 2022, the current interest rate applicable to the Bridge Loan is 12%. The Company has the option to capitalize such interest commencing on the date on which the Bridge Loan was funded and continuing until November 15, 2022. Commencing on November 15, 2022, the principal amount of the Bridge Loan will amortize at a rate of $0.7 million payable quarterly. The final maturity date of the Bridge Loan is (a) if full approval by FDA for marketing of the Company’s product known as ACER-001 (sodium phenylbutyrate) (“ACER-001 Approval”) occurs on or before September 30, 2022, then the date which is 12 business days after ACER-001 Approval, or (b) if ACER-001 Approval does not occur on or before September 30, 2022, then March 4, 2024. The Company has the option to prepay the Bridge Loan in whole or in part. Upon the repayment of the Bridge Loan (whether voluntary or at scheduled maturity), the Company must pay an exit fee so that SWK receives an aggregate amount (inclusive of all principal, interest and origination and other fees paid to SWK under the SWK Credit Agreement on or prior to the prepayment date) equal to (a) 1.3 times the outstanding principal amount of the Bridge Loan, plus any and all paid-in-kind interest amounts, if ACER-001 Approval or such payment occurs on or prior to September 30, 2022, or (b) 1.5 times the outstanding principal amount of the Bridge Loan, plus any and all paid-in-kind interest amounts, if each of ACER-001 Approval and such payment does not occur

until after September 30, 2022. The Bridge Loan contains a provision for the establishment of an alternative rate of interest if LIBOR were to no longer be available at any point while the Bridge Loan is outstanding. Under the Bridge Loan, the Company was required to maintain a cash and cash equivalents balance of not less than $4.0 million as of 20 days following receipt of FDA’s Complete Response Letter in June 2022 with respect to the Company’s NDA in respect of ACER-001 (sodium phenylbutyrate) for oral suspension for the treatment of patients with UCDs and is then required to maintain a cash and cash equivalents balance of not less than $6.5 million as of 40 days following receipt of that Complete Response Letter for the remainder of the time that the Bridge Loan is outstanding. The minimum cash balance would be reduced to $2.0 million in the event of positive safety and efficacy data for ACER-801 from a Phase 2a trial.

The Bridge Loan is secured by a first priority lien on all assets of the Company and any of its future subsidiaries pursuant to the SWK Security Agreement. The SWK Credit Agreement contains customary representations and warranties and affirmative and negative covenants. The Company paid to SWK $0.1 million in origination fees on the date on which the Bridge Loan was funded. The Bridge Loan contains certain provisions which could accelerate the maturity date of the outstanding loan should the Company be out of compliance with any of the stated covenants. At June 30, 2022, the Company did not deem probable any events that would give rise to such an acceleration. The Company classified the principal amortization payments of $1.9 million due within twelve months from the date of this report as current in the unaudited condensed balance sheet as of June 30, 2022.

In addition, the Company issued the SWK Warrant to purchase 150,000 shares of the Company’s common stock at an exercise price of $2.46 per share. SWK may exercise the SWK Warrant in accordance with the terms thereof for all or any part of such shares of common stock from the date on which the Bridge Loan was funded until and including March 4, 2029.

The Company recognized the fair value of the SWK Warrant for $0.3 million as additional paid in capital as of the date of the closing of the transaction.

The Company evaluated its compliance with all covenants with respect to the SWK Credit Agreement and concluded that it was in compliance as of June 30, 2022.

Secured Convertible Notes

On March 4, 2022, the Company also entered into the Secured Convertible Note Purchase Agreement with MAM Aardvark, LLC (“Marathon”) and Marathon Healthcare Finance Fund, L.P. (“Marathon Fund” and together with “Marathon” each a “Holder” and collectively the “Holders”) pursuant to which the Company issued and sold to the Holders the Secured Convertible Notes in an aggregate amount of $6.0 million (the “Convertible Note Financing”). The Convertible Note Financing closed on March 14, 2022 after satisfaction of closing conditions as set forth in the Secured Convertible Note Purchase Agreement. The proceeds of the Convertible Note Financing are being used to pay fees, costs and expenses related to the SWK Credit Agreement, the Secured Convertible Note Purchase Agreement and the Marathon Credit Agreement and for other working capital and general corporate purposes.

The Secured Convertible Notes bear interest at an annual rate of 6.5%, with such interest payable quarterly; provided, however, that until the first to occur of ACER-001 Approval and the repayment in full of the Bridge Loan, interest will not be payable in cash, but will accrue and be payable in cash upon the earlier of a) the repayment of all obligations under the Bridge Loan and termination of such Bridge Loan or b) within three business days of ACER-001 Approval. Subject to the restrictions set forth in an agreement among each of the Holders and SWK, as agent and lender, and any other intercreditor or subordination agreement entered into in connection with the Term Loan (defined below), each of the Holders has the right, during the 30-day periods beginning 12 months, 18 months and 24 months after the closing date of the Convertible Note Financing, to require the Company to redeem the Convertible Secured Note held by such Holder at a redemption price of the outstanding principal amount plus any accrued but unpaid interest. In the event of default, interest on the Secured Convertible Notes will increase to the lower of 11.5% per annum or the highest rate permitted by law. Each of the Holders also has the right to convert all or any portion of the outstanding principal amount plus any accrued but unpaid interest under the Convertible Secured Note held by such Holder into shares of common stock at a conversion price of $2.50 per share, subject to adjustment. Each Holder has certain rights with respect to the registration by the Company for resale of the shares of common stock issuable upon conversion of the Secured Convertible Note held by such Holder which are forth in the Secured Convertible Note Purchase Agreement. Any outstanding principal, together with all accrued and unpaid interest, will be payable on the earlier of the third anniversary of the date of issuance, or upon a change of control of the Company.

Pursuant to the Secured Convertible Note Purchase Agreement, the Secured Convertible Notes are secured by a lien on collateral representing substantially all assets of the Company, although such security interest is subordinated to the Company’s obligations under the SWK Credit Agreement and may also be subordinated to the Company’s obligations under the Marathon Credit Agreement.

The Company evaluated its compliance with all covenants with respect to the Secured Convertible Note Purchase Agreement and concluded that it was in compliance as of June 30, 2022.

Marathon Credit Agreement

On March 4, 2022, the Company also entered into the Marathon Credit Agreement with the lenders party thereto and Marathon, as the agent, sole lead arranger and sole bookrunner, which provides for a senior secured term loan facility in an aggregate amount of up to $42.5 million in a single borrowing (the “Term Loan”). The Term Loan will be available to be borrowed only following ACER-001 Approval and until December 31, 2022 (i.e., if ACER-001 Approval does not occur on or before December 31, 2022, then the Term Loan will not be available unless the Company is able to obtain an extension for the time period beyond December 31, 2022, to the actual PDUFA target action date), and funding of the Term Loan is also subject to the satisfaction of conditions as set forth in the Marathon Credit Agreement. Although the Company’s resubmitted NDA in respect of ACER-001 (sodium phenylbutyrate) for oral suspension for the treatment of patients with UCDs has been accepted for substantive review by FDA, the PDUFA target action date is January 15, 2023. The Term Loan, if it becomes available, will be used to refinance certain other indebtedness of the Company (including the Bridge Loan), to pay fees, costs and expenses related to the Marathon Credit Agreement and for other working capital and general corporate purposes. Should the Term Loan become available, the Company will pay Marathon a commitment fee equal to 1.5% of the term loan amount. The Marathon Credit Agreement also includes an accordion feature pursuant to which the Company, Marathon and the lenders under the Marathon Credit Agreement may agree to increase the Term Loan commitments by up to an additional $50.0 million dollars for a total commitment of $92.5 million; provided, however, that any such increase is within the sole discretion of each party (i.e., the Company cannot unilaterally trigger such an increase).

The Term Loan would bear interest at an annual rate of 13.5% and would be payable quarterly in arrears. The Company would have the option to capitalize up to 4% of such interest commencing on the Term Loan Funding Date and continuing until the third anniversary of the Term Loan Funding Date. Commencing on the third anniversary of the Term Loan Funding Date, the principal outstanding amount of the Term Loan would amortize at a rate of 2.78%, payable monthly. The final maturity date of the Term Loan would be the earlier of six years after the Term Loan Funding Date or December 31, 2028. The Company would have the option to prepay the Term Loan in whole or in part at any time, subject to a prepayment fee equal to (a) if the prepayment is made prior to March 4, 2025, then the greater of 5% or the amount of interest that would have accrued from the date of prepayment until March 4, 2025, (b) if the prepayment is made on or after March 4, 2025, but prior to March 4, 2026, then 3%, (c) if the prepayment is made on or after March 4, 2026, but prior to March 4, 2027, then 2%, or (d) if the prepayment is made on or after March 4, 2027, then 1%.

The Term Loan would be secured by a first priority lien on all assets of the Company and any of its future subsidiaries pursuant to a Guarantee and Collateral Agreement to be entered into on the Term Loan Funding Date between the Company and Marathon, as agent (the “Marathon Security Agreement”). The Marathon Credit Agreement contains customary representations and warranties and affirmative and negative covenants. The Company paid $0.2 million in commitment fees to Marathon in connection with obtaining the commitments in respect of the Term Loan and will pay $0.6 million in additional commitment fees to Marathon following ACER-001 Approval or any change of control of the Company or sale or transfer of the ACER-001 product.

In connection with the Marathon Credit Agreement, on March 4, 2022, the Company, Marathon and the Marathon Fund also entered into the Royalty Agreement pursuant to which, in the event of the funding of the Term Loan, the Company will pay Marathon and the Marathon Fund, on a quarterly basis, 2% of certain aggregate commercial revenue from sales of ACER-001 during that quarter (i.e., 2% of the net sales and of the amount of certain other payments), subject to a cap on the aggregate amount of such payments of $15.0 million. Upon a change of control of the Company or the sale of the ACER-001 business to a third party, the Company would pay Marathon and the Marathon Fund the difference between $15.0 million and the aggregate amount of the payments previously made by the Company to Marathon and the Marathon Fund pursuant to the Royalty Agreement.

As of June 30, 2022, the Company had not triggered the conditions in order to draw on the Term Loan, and as such had not triggered the associated Royalty Agreement.

The Company engaged an exclusive financial advisor with respect to the financings contemplated by the SWK Credit Agreement, the Secured Convertible Note Purchase Agreement and the Marathon Credit Agreement. In connection with the funding of the Bridge Loan and the Convertible Note Financing, the Company paid its financial advisor a fee of $0.5 million for its services. In connection with a funding of the Term Loan, the Company expects to pay the same financial advisor an additional fee of approximately $0.7 million for its services.

The Company is eligible to elect the fair value option under ASC 815 and bypass analysis of potential embedded derivatives and further analysis of bifurcation of any such financial instruments and has elected such option. The Company recognized the SWK Warrant at fair value as of the date of the close of the transaction and recorded it in equity. The Bridge Loan and Secured Convertible Notes met the definition of a “recognized financial liability” which is an acceptable financial instrument eligible for the fair value option under ASC 825-10-15-4 and do not meet the definition of any of the financial instruments found within ASC 825-10-15-5 that are not eligible for the fair value option. Therefore, both the Bridge Loan and Secured Convertible Notes are recorded at their fair value upon issuance and subsequently re-measured at each reporting period until their maturity, prepayment or conversion. Additionally, all issuance costs incurred in connection with a debt instrument that is measured at fair value pursuant to the election of

the fair value option are expensed during the period the debt is acquired. The Bridge Loan was recorded at fair value of $6.2 million after allocating the fair value of the SWK Warrant of $0.3 million.

The Company incurred $1.2 million of debt issuance costs, which were expensed as incurred due to the election of the fair value option and were included in interest expense in the accompanying unaudited condensed statement of operations for the six months ended June 30, 2022. Debt issuance costs were comprised of $0.5 million that related to the costs and expense paid directly to SWK and the Holders, $0.7 million of costs and expenses paid to the Company’s financial advisor, and other legal and accounting costs. The fee of $0.2 million paid in connection with obtaining the commitments in respect of the Term Loan was paid to Marathon through gross proceeds received from the Secured Convertible Notes. The Company recorded this fee as expense during the three months ended June 30, 2022.

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Fair Value Measurements

6 Months Ended

Jun. 30, 2022

Fair Value Disclosures [Abstract]

Fair Value Measurements

7.FAIR VALUE MEASUREMENTS

In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy within which the entire fair value measurement falls is based on the lowest level input that is significant to the fair value measurement in its entirety. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability.

The 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. At each reporting period, the Company reviews the assets and liabilities that are subject to ASC 815-40. At each reporting period, all assets and liabilities for which the fair value measurement is based on significant unobservable inputs or instruments which trade infrequently and therefore have little or no price transparency are classified as Level 3. The valuation methodologies used for the Company’s financial instruments measured on a recurring basis at fair value, including the general classification of such instruments pursuant to the valuation hierarchy, is set forth in the tables below.

The following table presents the Company’s assets and liabilities that are measured and recognized at fair value on a recurring basis classified under the appropriate level of the fair value hierarchy as of June 30, 2022.

	As of June 30, 2022				Fair Value Measurements As of June 30, 2022
	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
Assets:
Money Market Funds in Cash Equivalents	$	13,969,744	$	13,969,744	$	13,969,744	$	—	$	—
Liabilities:
Debt:
Secured Convertible Notes	$	4,321,200	$	4,321,200	$	—	$	—	$	4,321,200
Bridge Loan	$	4,084,709	$	4,084,709	$	—	$	—	$	4,084,709
	$	8,405,909	$	8,405,909	$	—	$	—	$	8,405,909

A lattice-based model was used to estimate the fair value of the Secured Convertible Notes at June 30, 2022. The lattice model utilizes a “decision tree,” whereby future movement in the Company’s common stock price is estimated based on a volatility factor. The Company classified the fair value of the Secured Convertible Notes as a Level 3 measurement due to the lack of observable market data. The lattice model requires the development and use of assumptions, including the Company’s stock price volatility returns, an appropriate risk-free interest rate, default intensity rate, and expected recovery rate given default. The Company updated its estimate of fair value of the Bridge Loan based on the probability-weighted net present value of future cash flows at June 30, 2022

The significant unobservable inputs used in calculating the fair value of the Secured Convertible Notes and Bridge Loan represent management’s best estimates and involve inherent uncertainties and the application of management’s judgment. Any significant changes in the inputs described herein may result in significantly higher or lower fair value measurements. During the three and six months ended June 30, 2022, the Company recognized a reduction in the fair value of the Bridge Loan of $2.1 million, through non-operating income in the statement of operations. During the three and six months ended June 30, 2022, the Company recognized a reduction in the fair value of the Secured Convertible Notes of $2.7 million and $1.7 million, respectively, through non-operating income in the statement of operations.

	December 31, 2021		Loan Received		Payments		Accretion/ Interest Accrued		Adjustment to Fair Value Mark to Market			June 30, 2022
Secured Convertible Notes	$	—	$	6,000,000	$	—	$	—	$	(1,678,800	)	$	4,321,200
Bridge Loan	$	—	$	6,172,969	$	—	$	—	$	(2,088,260	)	$	4,084,709
	$	—	$	12,172,969	$	—	$	—	$	(3,767,060	)	$	8,405,909

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Commitments and Contingencies

6 Months Ended

Jun. 30, 2022

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

8. COMMITMENTS AND CONTINGENCIES

License Agreements

In April 2014, the Company obtained exclusive rights to intellectual property relating to ACER-001 for the treatment of inborn errors of branched-chain amino acid metabolism, including MSUD, and preclinical and clinical data, through a license agreement with Baylor College of Medicine (“BCM”). Under the terms of the agreement, as amended, the Company has worldwide exclusive rights to develop, manufacture, use, sell and import licensed products as defined in the agreement. The license agreement requires the Company to make certain upfront and annual payments to BCM, as well as reimburse certain legal costs, make payments upon achievement of defined milestones, and pay royalties in the low single-digit percent range on net sales of any developed product over the royalty term.

In August 2016, the Company signed an agreement with Assistance Publique—Hôpitaux de Paris, Hôpital Européen Georges Pompidou (“AP-HP”) (via its Department of Clinical Research and Development) granting the Company the exclusive worldwide rights to access and use data from a randomized, controlled clinical study of celiprolol. The Company used this pivotal clinical data to support an NDA regulatory filing for EDSIVO^TM for the treatment of vEDS. The agreement requires the Company to make certain upfront payments to AP-HP, as well as reimburse certain costs and make payment of royalties in the low single-digit percent range on net sales of celiprolol over the royalty term.

In September 2018, the Company entered into a License Agreement for Development and Exploitation with AP-HP to acquire the exclusive worldwide intellectual property rights to three European patent applications relating to certain uses of celiprolol including (i) the optimal dose of celiprolol in treating vEDS patients, (ii) the use of celiprolol during pregnancy and (iii) the use of celiprolol to treat kyphoscoliotic Ehlers-Danlos syndrome (type VI). Pursuant to the agreement, the Company will reimburse AP-HP for certain costs and will pay annual maintenance fee payments. Subject to a minimum royalty amount, the Company will also pay royalty payments on annual net sales of celiprolol during the royalty term in the low single digit percent range, depending upon whether there is a valid claim of a licensed patent. Under the agreement, the Company will control and pay the costs of ongoing patent prosecution and maintenance for the licensed applications. The Company may terminate the agreement in its sole discretion upon written notice to AP-HP, and AP-HP may terminate the agreement in the event the Company fails to make the required payments after notice and opportunity to cure. Additionally, the agreement will terminate if the Company terminates clinical development, marketing approval is withdrawn by the health or regulatory authorities in all countries, the Company ceases to do business or there is a procedure of winding-up by court decision against the Company. The Company subsequently filed three U.S. patent applications on this subject matter in October 2018.

In December 2018, the Company entered into an exclusive license agreement with Sanofi granting the Company worldwide rights to ACER-801, a clinical-stage, selective, non-peptide tachykinin NK3 receptor antagonist. The agreement required the Company to make a certain upfront payment to Sanofi, make payments upon achievement of defined development and sales milestones and pay royalties on net sales of ACER-801 over the royalty term. The Company plans to initially pursue development of ACER-801 as a potential treatment for iVMS.

Collaboration Agreement

On March 19, 2021, the Company entered into the Collaboration Agreement with Relief providing for the development and commercialization of ACER-001 for the treatment of various inborn errors of metabolism, including for the treatment of UCDs and MSUD. The Collaboration Agreement is the culmination of the Option Agreement previously entered into between the Company and Relief on January 25, 2021, which provided Relief with an exclusive period of time up to June 30, 2021 for the parties to enter into a

mutually acceptable definitive agreement with respect to the potential collaboration and license arrangements. In consideration for the grant of the exclusivity option, (i) the Company received from Relief an upfront non-refundable payment of $1.0 million, (ii) Relief provided to the Company a 12-month secured loan in the principal amount of $4.0 million with interest at a rate equal to 6% per annum, as evidenced by a promissory note the Company issued to Relief, and (iii) the Company granted Relief a security interest in all of its assets to secure performance of the promissory note, as evidenced by a security agreement. Upon signing the Collaboration Agreement, the Company received a $10.0 million cash payment from Relief (the $14.0 million “Reimbursement Payment” from Relief to the Company, offset by repayment of the $4.0 million outstanding balance of the prior loan, plus interest), and Relief released its security interest in the Company’s assets pursuant to the Promissory Note. Under the terms of the Collaboration Agreement, Relief committed to pay the Company Development Payments of up to an additional $20.0 million for U.S. development and commercial launch costs for the UCDs and MSUD indications. During the three months ended June 30, 2021, the Company received from Relief the $10.0 million First Development Payment. The Company was contractually entitled to receive from Relief an additional $10.0 million Second Development Payment conditioned upon FDA’s acceptance of an NDA for ACER-001 in a UCD for filing and review. This acceptance was received on October 4, 2021. On October 6, 2021, the Company entered into a Waiver and Agreement with Relief to amend the timing for the Second Development Payment. The Company received the Second Development Payment in two $5.0 million tranches on each of October 12, 2021 and January 14, 2022. Further, the Company retained development and commercialization rights in the U.S., Canada, Brazil, Turkey and Japan (“Acer Territory”). The companies will split net profits from the Acer Territory 60%:40% in favor of Relief. Relief licensed the rights for the rest of the world (“Relief Territory”), where the Company will receive from Relief a 15% royalty on all net sales received in the Relief Territory. The Company could also receive a total of $6.0 million in milestone payments based on the first European (EU) marketing approvals of ACER-001 for a UCD and MSUD. There is no guarantee that ACER-001 will receive regulatory authority approval in any territory or become commercially available for the indications under investigation.

Paycheck Protection Program (“PPP”) Loan

On April 11, 2020, the Company was advised that its principal bank, JPMorgan Chase Bank, N.A., had approved a $0.6 million loan under the PPP pursuant to the CARES Act that was signed into law on March 27, 2020.

As a U.S. small business, the Company qualified for the PPP, which allows businesses and nonprofits with fewer than 500 employees to obtain loans of up to $10 million to incent companies to maintain their workers as they manage the business disruptions caused by the COVID-19 pandemic.

The loan, evidenced by a promissory note to JPMorgan Chase Bank, N.A. as lender, had a term of two years, was unsecured, and was guaranteed by the Small Business Administration. The loan bore interest at a fixed rate of one percent per annum, with the first six months of interest and principal deferred. Some or all of a loan may be forgiven if at least 75% of the loan proceeds are used by the Company to cover payroll costs, including benefits, and if the Company maintains its employment and compensation within certain parameters during the period following the loan origination date and complies with other relevant conditions. On June 5, 2020, the Payroll Protection Flexibility Act of 2020 was signed into law, adjusting certain terms of the loans issued under the PPP, including extending the initial deferral period from six to up to ten months, reducing from 75% to 60% the portion of loan proceeds required to be used to cover payroll costs, and allowing borrowers to elect a 24-week rather than an eight-week period related to employment and compensation provisions.

The Company accounted for the loan according to ASC 470. The Company was advised by JPMorgan Chase Bank, N.A. that the principal and interest associated with its PPP loan were forgiven in full as of June 10, 2021.

Litigation

From time to time, the Company may become involved in litigation or proceedings relating to claims arising out of its operations. To the extent that the Company incurs legal costs associated with any potential loss contingency, those legal costs are expensed as incurred.

The Securities Class Action and Stockholder Derivative Actions

On July 1, 2019, plaintiff Tyler Sell filed a putative class action lawsuit, Sell v. Acer Therapeutics Inc. et al., No. 1:19-cv-06137GHW, against the Company, Chris Schelling and Harry Palmin, in the U.S. District Court for the Southern District of New York. The Complaint alleged that the Company violated federal securities laws by allegedly making material false and misleading statements regarding the likelihood of FDA approval for the EDSIVO^TM NDA. With the selection of a lead plaintiff, the case was later captioned Skiadas v. Acer Therapeutics Inc. et al. The parties reached an agreement to settle this action for a payment of $8.4 million, which was approved by the Court on January 7, 2022. Payment of the settlement was made by the Company’s insurance carriers. As of June 30, 2022, the Company has a remaining recognized liability of $0.1 million for costs related to both the derivative and class action cases in other current liabilities and has also recognized an asset of an equal amount in other current assets representing the expected remaining recovery from its insurance carriers.

On August 12, 2019, a stockholder derivative action, Gress v. Aselage et al., No. 1:19-cv-01505-MN, was filed in the U.S. District Court for the District of Delaware against certain of the Company’s present and former officers and directors, asserting damages resulting from the alleged breach of their fiduciary duties, based on the same facts at issue in the Skiadas case. On March 17, 2020, a second stockholder derivative action, Giroux v. Amello et al., No. 1:20-cv-10537-GAO, was filed in the U.S. District Court for the District of Massachusetts against certain of the Company’s present and former officers and directors, asserting claims based on the same facts at issue in the Skiadas and Gress cases. On June 23, 2020, a third stockholder derivative action, King v. Schelling, et al., No. 1:20-cv-04779-GHW, was filed in the U.S. District Court for the Southern District of New York against certain of the Company’s present and former officers and directors that arises from the same facts underlying the Skiadas, Gress, and Giroux cases. On July 6, 2020, a fourth stockholder derivative action, Diaz v. Amello et al., No. 1:20-cv-00909-MN, was filed in the U.S. District Court for the District of Delaware. By Stipulation and Order dated August 7, 2020, the Gress and Diaz cases were consolidated under the caption In re Acer Therapeutics Inc. Derivative Litigation, Lead Case No. 1:19-cv-01505-MN. As disclosed previously, the parties reached an agreement to settle all of the derivative cases. At a hearing held on May 12, 2021 in the District Court of Massachusetts, the Court administering the matter, the settlement was approved. Payment of the settlement amount of $0.5 million, plus legal fees and costs in excess of the retention (deductible) amount, has been made by the Company’s insurance carriers.

Commitments Under Clinical Trial Agreements

The Company has entered into agreements with two CROs in connection with the conduct of two separate clinical trials for ACER-801 and EDSIVO^TM. As a part of those agreements, the Company has agreed to pay any third-party costs or subcontracts associated with those agreements which are unpaid by the CRO. Such reimbursement would apply only to costs approved in advance by the Company. Those CRO agreements are subject to termination at any time, with or without cause, by the Company, in which case only costs earned or non-cancellable to date of termination would remain subject to reimbursement.

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Stockholders' (Deficit) Equity

6 Months Ended

Jun. 30, 2022

Equity [Abstract]

Stockholders' (Deficit) Equity

9. STOCKHOLDERS’ (DEFICIT) EQUITY

At-the-Market Facility

On November 9, 2018, the Company entered into a sales agreement with Roth Capital Partners, LLC, and on March 18, 2020, the Company entered into an amended and restated sales agreement with JonesTrading Institutional Services LLC and Roth Capital Partners, LLC. The agreement provides a facility for the offer and sale of shares of common stock from time to time having an aggregate offering price of up to $50.0 million depending upon market demand, in transactions deemed to be an “at-the-market” (“ATM”) offering. The Company has no obligation to sell any shares of common stock pursuant to the agreement and may at any time suspend sales pursuant to the agreement. Each party may terminate the agreement at any time without liability. The Company will need to keep current its shelf registration statement and the offering prospectus relating to the ATM facility, in addition to providing certain periodic deliverables under the sales agreement, in order to use such facility. Due to the SEC’s “baby shelf rules,” which prohibit companies with a public float of less than $75 million from issuing securities under a shelf registration statement in excess of one-third of such company’s public float in a 12-month period, the Company is currently only able to issue a limited number of shares which aggregate to not more than one-third of the Company’s public float. During the three and six months ended June 30, 2022, the Company sold 1,062,547 shares of common stock through its ATM facility at a gross sale price of $3.0719 per share, for gross proceeds of $3.3 million. Proceeds, net of $0.2 million of fees and offering costs, were $3.1 million. During the six months ended June 30, 2021, the Company sold an aggregate of 877,107 additional shares of common stock through the ATM at an average gross sale price of $3.1692 per share, for gross proceeds of $2.8 million. Proceeds for the six months ended June 30, 2021, net of $0.2 million of fees and offering costs, were $2.6 million. As of June 30, 2022, $36.7 million remained available under the Company’s ATM facility. See Note 11 for a discussion of subsequent ATM facility activity.

Common Stock Purchase Agreement

On April 30, 2020, the Company entered into an equity line purchase agreement and a registration rights agreement pursuant to which Lincoln Park has committed to purchase up to $15.0 million of the Company’s common stock. Under the terms and subject to the conditions of the purchase agreement, the Company has the right, but not the obligation, to sell to Lincoln Park, and Lincoln Park is obligated to purchase up to $15.0 million of the Company’s common stock, with $11.8 million obligation remaining as of June 30, 2022. Such sales of common stock by the Company will be subject to certain limitations, and may occur from time to time, at the Company’s sole discretion, over the 36-month period commencing on June 8, 2020. The number of shares the Company may sell to Lincoln Park on any single business day in a regular purchase is 50,000, but that amount may be increased up to 100,000 shares, depending upon the market price of the Company’s common stock at the time of sale and subject to a maximum limit of $1.0 million per regular purchase. The purchase price per share for each such regular purchase will be based on prevailing market prices of the Company’s common stock immediately preceding the time of sale as computed under the purchase agreement. In addition to regular purchases, the Company may also direct Lincoln Park to purchase other amounts as accelerated purchases or as additional accelerated purchases if the closing sale price of the common stock exceeds certain threshold prices as set forth in the purchase agreement.

Under applicable rules of the Nasdaq Capital Market, in no event may the Company issue or sell to Lincoln Park under the purchase agreement more than 19.99% of the shares of the Company’s common stock outstanding immediately prior to the execution of the purchase agreement, unless (i) the Company obtains stockholder approval to issue shares of common stock in excess of the Exchange Cap or (ii) the average price of all applicable sales of common stock to Lincoln Park under the purchase agreement equals or exceeds $2.1668, such that issuances and sales of the common stock to Lincoln Park under the purchase agreement would be exempt from the issuance limitation under applicable Nasdaq rules.

Lincoln Park has no right to require the Company to sell any shares of common stock to Lincoln Park, but Lincoln Park is obligated to make purchases as the Company directs, subject to certain conditions. In all instances, the Company may not sell shares of its common stock to Lincoln Park under the purchase agreement if doing so would result in Lincoln Park beneficially owning more than 9.99% of its common stock. The Company determined that the right to sell additional shares represents a freestanding put option under ASC 815 Derivatives and Hedging, but has a fair value of zero, and therefore no additional accounting was required.

Actual sales of shares of common stock to Lincoln Park under the purchase agreement will depend on a variety of factors to be determined by the Company from time to time, including, among others, market conditions, the trading price of the common stock and determinations by the Company as to the appropriate sources of funding for the Company and its operations. However, there can be no assurance that the Company will be able to receive the entire obligation amount from Lincoln Park because the purchase agreement contains limitations, restrictions, requirements, events of default, and other provisions that could limit the Company’s ability to cause Lincoln Park to buy common stock from the Company.

The proceeds under the purchase agreement to the Company will depend on the frequency and prices at which the Company sells shares of its stock to Lincoln Park. The Company issued 148,148 shares of common stock to Lincoln Park as a commitment fee in connection with entering into the purchase agreement. The $0.4 million fair value of the commitment fee shares was recorded to General and administrative expenses along with other costs incurred in connection with entering into the purchase agreement.

During the three and six months ended June 30, 2022, the Company sold 300,000 shares of common stock under its purchase agreement with Lincoln Park at a weighted average gross sale price of $1.25 per share, resulting in proceeds of $0.4 million. During the three months ended June 30, 2021, the Company did not sell any shares of common stock under its purchase agreement with Lincoln Park. During the six months ended June 30, 2021, the Company sold 200,000 shares of common stock under the purchase agreement with Lincoln Park at a weighted average price of $2.47 per share, resulting in proceeds of $0.5 million.

2018 Stock Incentive Plan

The Company’s 2018 Stock Incentive Plan (the “2018 Plan”), adopted on May 14, 2018, originally provided for the grant of up to 500,000 shares of common stock as stock options, restricted stock, stock appreciation rights, restricted stock units, performance-based awards and cash-based awards that may be settled in cash, stock or other property to employees, executive officers, directors, and consultants.

In addition to the 500,000 shares, the total number of shares reserved for issuance under the 2018 Plan also consists of the sum of the number of shares subject to outstanding awards under the Company’s 2010 Stock Incentive Plan, as amended and restated (the “2010 Plan”), and the 2013 Stock Incentive Plan, as amended (the “2013 Plan”), as of the effective date of the 2018 Plan that are subsequently forfeited or terminated for any reason prior to being exercised or settled, plus the number of shares subject to vesting restrictions under the 2010 Plan and the 2013 Plan on the effective date of the 2018 Plan that are subsequently forfeited, plus the number of shares reserved but not issued or subject to outstanding grants under the 2010 Plan and the 2013 Plan as of the effective date of the 2018 Plan, up to a maximum of 635,170 shares in aggregate. In addition, the number of shares authorized for issuance under the 2018 Plan is automatically increased (the “evergreen provision”) on the first day of each fiscal year beginning on January 1, 2019, and ending on (and including) January 1, 2028, in an amount equal to the lesser of (i) 4% of the outstanding shares of common stock on the last day of the immediately preceding fiscal year, or (ii) another amount (including zero) determined by the Company’s Board of Directors. On January 1, 2022 and 2021, 572,410 and 529,325 additional shares, respectively, were authorized according to the evergreen provision. On February18, 2022, the Company’s Board of Directors amended and restated the 2018 Plan to add a provision permitting the grant of inducement awards under Nasdaq Marketplace Rule 5635(c)(4) to eligible recipients and initially reserved 200,000 shares of the Company’s common stock for issuance pursuant to inducement awards granted under the 2018 Plan. Any shares subject to awards granted under the 2018 Plan that are forfeited or terminated before being exercised or settled or are not delivered to the participant because such award is settled in cash, will again become available for issuance under the 2018 Plan. Shares withheld to satisfy the grant, exercise price or tax withholding obligation related to an award will again become available for issuance under the 2018 Plan.

The 2018 Plan is administered by the Company’s Board of Directors, which may in turn delegate authority to administer the plan to a committee such as the Compensation Committee, referred to herein as the 2018 Plan administrator. Subject to the terms of the 2018 Plan, the 2018 Plan administrator will determine recipients, the number of shares or amount of cash subject to awards to be granted, whether an option is to be an incentive stock options or non-incentive stock options and the terms and conditions of the stock

awards, including the period of their exercisability and vesting. Subject to the limitations set forth below, the 2018 Plan administrator will also determine the exercise price of options granted under the 2018 Plan. The 2018 Plan expressly provides that, without the approval of the stockholders, the 2018 Plan administrator does not have the authority to reduce the exercise price of any outstanding stock options or stock appreciation rights under the 2018 Plan (except in connection with certain corporate transactions, such as stock splits, certain dividends, recapitalizations, reorganizations, mergers, spin-offs and the like), or cancel any outstanding underwater stock options or stock appreciation rights in exchange for cash or new stock awards under the 2018 Plan.

Option awards are generally granted with an exercise price equal to the fair value of the common stock at the date of grant and have contractual terms of ten years. Stock options granted to executive officers and employees generally vest either 1) over a four-year period, with 25% vesting on the one-year anniversary of the grant date and the remaining 75% vesting quarterly over the remaining three years, assuming continued service, and with vesting acceleration in full immediately prior to a change in control, or 2) for certain stock options granted on September 18, 2019, 50% vest on each of January 1, 2021 and January 1, 2022, assuming continued service, and with vesting acceleration in full immediately prior to a change in control. For certain grants such as those made to members of the Company’s Board of Directors, vesting occurs 12 months after the date of the grant. Restricted stock units generally vest and are settled upon the first anniversary of the grant date. There were no grants of restricted stock units during the six months ended June 30, 2022 or 2021 and no unvested restricted stock units as of June 30, 2022 or December 31, 2021.

At June 30, 2022, 333,376 shares of common stock remained available for the grant of future awards under the 2018 Plan.

2013 Stock Incentive Plan

The Company’s 2013 Plan provided for the issuance of up to 165,000 shares of common stock as incentive or non-qualified stock options and/or restricted common stock to employees, officers, directors, consultants and advisers. Option awards were generally granted with an exercise price equal to the fair value of the common stock at the date of grant and had contractual terms of ten years. At June 30, 2022, all shares available under the 2013 Plan were subject to outstanding equity awards, and no new awards may be granted under the 2013 Plan.

2010 Stock Incentive Plan

The Company’s 2010 Plan, as amended and restated, provided for the grant of up to 470,170 shares of common stock as incentive or non-qualified stock options, stock appreciation rights, restricted stock units and/or restricted common stock to employees, officers, directors, consultants and advisers. Option awards were generally granted with an exercise price equal to the fair value of the common stock at the date of grant and had contractual terms of ten years. At June 30, 2022, all shares available under the 2010 Plan were subject to outstanding equity awards, and no new awards may be granted under the 2010 Plan. 

Stock Plan Activity

A summary of option activity under the 2018 Plan, 2013 Plan, and 2010 Plan for the six months ended June 30, 2022, is as follows:

Year-to-Date Activity	Number of Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value (in Millions)
Options outstanding at December 31, 2021		1,954,975		$	8.16		7.8
Granted		958,000		$	2.33
Cancelled/forfeited		(62,188	)	$	4.12
Options outstanding at June 30, 2022		2,850,787		$	6.29		8.0	$	—
Options exercisable at June 30, 2022		1,322,180		$	9.80		6.6	$	—

At June 30, 2022, there was $3.3 million of unrecognized compensation expense related to the stock-based compensation arrangements granted under all plans. The average remaining vesting period for options was 3.0 years. The weighted average grant date fair value of options granted during the three and six months ended June 30, 2022 was $1.97 and $1.99, respectively. The weighted average grant date fair value of options granted during the three and six months ended June 30, 2021was $2.18 and $2.83, respectively. The fair value of shares vested during the three and six months ending June 30, 2022 was $0.4 million and $1.5 million, respectively. The fair value of shares vested during the three and six months ending June 30, 2021 was $0.3 million and $1.2 million, respectively. The amount of stock-based compensation expense recorded to research and development expenses and to general and administrative expenses is detailed in table below:

	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
Stock-based compensation
Research and development	$	158,880	$	176,534	$	299,320	$	344,580
General and administrative		301,897		418,129		635,554		809,519
Total stock-based compensation expense	$	460,777	$	594,663	$	934,874	$	1,154,099

Warrants issued to SWK

	Six Months Ended June 30,
	2022				2021
	Number		Weighted Average Exercise Price		Number		Weighted Average Exercise Price
Granted during the period		150,000	$	2.46		—	$	—
Outstanding at end of the period		150,000	$	2.46		—	$	—
Exercisable at end of the period		150,000	$	2.46
Weighted average remaining life	6.8 years					—

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Net Loss Per Share (As Restated)

6 Months Ended

Jun. 30, 2022

Earnings Per Share [Abstract]

Net Loss Per Share (As Restated)

10. NET LOSS PER SHARE (AS RESTATED)

Basic net loss per share is computed by dividing the net loss in each period by the weighted-average number of common shares outstanding during such period. Diluted net loss per share is computed similarly to basic net loss per share except that the denominator is increased to include the number of additional common shares that would have been outstanding if the potential common shares had been issued and if the additional common shares were dilutive. For the periods presented, common stock equivalents, consisting of stock-based awards and the SWK Warrant, were not included in the calculation of the diluted loss per share because to do so would be anti-dilutive. The SWK Warrant price is subject to a proportionate adjustment in the event of a stock dividend or stock split. The Company concluded that they should be deemed participating securities. However, as the Company is currently operating in a net loss position as of the second quarter of 2022 and has not declared any dividends, such inclusion of the participating securities related to the SWK Warrant (as common stock equivalents) would be anti-dilutive and thus would be excluded from the calculation of net loss per share. When calculating diluted net loss per share, the Company includes, only if dilutive, the potential common shares associated with the Secured Convertible Notes using the “if converted” method, which adjusts the numerator for any impact to earnings for the period and includes in the denominator the shares assumed to be converted at the beginning of the period.

A reconciliation of the numerator and denominator used in the calculation of basic and diluted net loss per common share for the three and six months ended June 30, 2022 is as follows:

	For the Three Months Ended June 30, 2022			For the Six Months Ended June 30, 2022
Numerator:
Net loss	$	(2,667,036	)	$	(11,846,040	)
Denominator:
Basic:
Weighted average shares of common stock outstanding		15,273,707			14,794,637
Diluted:
Weighted average shares of common stock outstanding		15,273,707			14,794,637
Effect of potentially dilutive shares (1)		2,407,693			1,577,900
Total weighted average shares of common stock and potentially dilutive shares		17,681,400			16,372,537
Net loss per common share:
Basic:
Net loss applicable to common stockholders	$	(2,667,036	)	$	(11,846,040	)
Weighted average shares of stock outstanding, basic		15,273,707			14,794,637
Basic net loss per common share	$	(0.17	)	$	(0.80	)
Diluted:
Net loss applicable to common shareholders, diluted (1)	$	(5,308,236	)	$	(13,524,840	)
Weighted average shares of stock outstanding, diluted		17,681,400			16,372,537
Diluted net loss per common share	$	(0.30	)	$	(0.83	)

(1) In calculating diluted net loss per share, we excluded the impact of changes in the fair value of the Secured Convertible Notes of $2.6 million and $1.7 million, for the three and six months ended June 30, 2022, respectively. The 2,407,693 shares and 1,577,900 shares for the three and six months ended June 30, 2022, respectively, are the weighted average shares associated with the original principal amount of the Secured Convertible Notes and the shares that may be issuable upon the conversion of accrued interest owed at the beginning of the period.

As of June 30, 2022 and 2021, the number of shares of common stock underlying potentially dilutive securities excluded from the calculation of diluted net loss per share, because our net loss meant that their inclusion would have been anti-dilutive for those periods, consists of:

	June 30,
	2022		2021
Options to purchase common stock		2,850,787		1,751,475
SWK Warrant		150,000		—
Total		3,000,787		1,751,475

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Subsequent Events

6 Months Ended

Jun. 30, 2022

Subsequent Events [Abstract]

Subsequent Events

11. SUBSEQUENT EVENTS

Subsequent to June 30, 2022, the Company sold an aggregate of 133,206 shares of common stock under its ATM facility at an average gross sale price of $1.51 per share, resulting in gross and net proceeds of $0.2 million.

Subsequent to June 30, 2022, the Company sold 275,000 shares of common stock under its purchase agreement with Lincoln Park at an average gross sale price of $1.38 per share, resulting in gross proceeds of $0.4 million.

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Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2022

Accounting Policies [Abstract]

Liquidity

Liquidity 

The Company had an accumulated deficit of $126.4 million and cash and cash equivalents of $14.5 million as of June 30, 2022. Net cash used in operating activities was $12.9 million for the six months ended June 30, 2022.

On November 9, 2018, the Company entered into a sales agreement with Roth Capital Partners, LLC, and on March 18, 2020, an amended and restated sales agreement was entered into with JonesTrading Institutional Services LLC and Roth Capital Partners, LLC. The agreement provides a facility for the offer and sale of shares of common stock from time to time having an aggregate offering price of up to $50.0 million depending upon market demand, in transactions deemed to be an at-the-market (“ATM”) offering. The Company has no obligation to sell any shares of common stock pursuant to the agreement and may at any time suspend sales pursuant to the agreement. Each party may terminate the agreement at any time without liability. During the three and six months ended June 30, 2022, the Company sold 1,062,547 shares of common stock through its ATM facility at a gross sale price of $3.0719 per share, for gross proceeds of $3.3 million. Proceeds, net of $0.2 million of fees and offering costs, were $3.1 million. As of June 30, 2022, $36.7 million remained available under the Company’s ATM facility, subject to various limitations.

On April 30, 2020, the Company entered into an equity line purchase agreement and registration rights agreement pursuant to which Lincoln Park Capital Fund, LLC (“Lincoln Park”) has committed to purchase up to $15.0 million of the Company’s common stock. Under the terms and subject to the conditions of the purchase agreement, the Company has the right, but not the obligation, to sell to Lincoln Park, and Lincoln Park is obligated to purchase up to $15.0 million of the Company’s common stock, with $11.8 million obligation remaining as of June 30, 2022. Such sales of common stock by the Company will be subject to certain limitations, and may occur from time to time, at the Company’s sole discretion, over the 36-month period commencing on June 8, 2020. The number of shares the Company may sell to Lincoln Park on any single business day in a regular purchase is 50,000, but that amount may be increased up to 100,000 shares, depending upon the market price of the Company’s common stock at the time of sale and subject to a maximum limit of $1.0 million per regular purchase. The purchase price per share for each such regular purchase will be based on prevailing market prices of the Company’s common stock immediately preceding the time of sale as computed under the purchase agreement. In addition to regular purchases, the Company may also direct Lincoln Park to purchase other amounts as accelerated purchases or as additional accelerated purchases if the closing sale price of the common stock exceeds certain threshold prices as set forth in the purchase agreement. During the three and six months ended June 30, 2022, the Company sold 300,000 shares of common stock under its purchase agreement with Lincoln Park at a weighted average gross sale price of $1.25 per share, resulting in proceeds of $0.4 million. As of June 30, 2022, $11.8 million remained available under the Lincoln Park agreement, subject to various limitations.

On January 25, 2021, the Company entered into an option agreement (the “Option Agreement”) with Relief, pursuant to which the Company granted Relief an exclusive option (the “Exclusivity Option”) to pursue a potential collaboration and license arrangement with the Company for the development, regulatory approval and commercialization of ACER-001 for the treatment of various inborn errors of metabolism, including UCDs and MSUD. The Option Agreement provided a period of time up to June 30, 2021, for the parties to perform additional due diligence and to work toward negotiation and execution of a definitive agreement

with respect to the potential collaboration for ACER‑001. In consideration for the grant of the Exclusivity Option, (i) the Company received from Relief an upfront nonrefundable payment of $1.0 million, (ii) Relief provided to the Company a 12-month secured loan in the principal amount of $4.0 million, as evidenced by a Promissory Note (the “Note”) the Company issued to Relief, and (iii) the Company granted Relief a security interest in all of its assets to secure performance of the Note, as evidenced by a Security Agreement (the “Security Agreement”). The Note was repayable in one lump sum within 12 months from issuance and bore interest at a rate equal to 6% per annum. If a definitive agreement with respect to the potential collaboration had not been executed by the parties on or before June 30, 2021, the Exclusivity Option would have terminated, and the Note would have been repayable by the Company upon maturity.

On March 19, 2021, the Company entered into the Collaboration Agreement with Relief providing for the development and commercialization of ACER-001 for the treatment of various inborn errors of metabolism, including for the treatment of UCDs and MSUD. The Company received a $10.0 million cash payment from Relief (consisting of a $14.0 million “Reimbursement Payment” from Relief to the Company offset by payment of the $4.0 million outstanding balance of the Note plus interest earned through the date of the Collaboration Agreement) and Relief released its security interest in all of the Company’s assets pursuant to the Promissory Note. Under the terms of the Collaboration Agreement, Relief committed to pay the Company up to an additional $20.0 million for U.S. development and commercial launch costs for the UCDs and MSUD indications (the “Development Payments”). During the three months ended June 30, 2021, the Company received from Relief the $10.0 million First Development Payment. The Company was contractually entitled to receive from Relief an additional $10.0 million Second Development Payment conditioned upon FDA’s acceptance of a New Drug Application (“NDA”) for ACER-001 in a UCD for filing and review. This acceptance was received on October 4, 2021. On October 6, 2021, the Company entered into a Waiver and Agreement with Relief to amend the timing for the Second Development Payment. The Company received the Second Development Payment in two $5.0 million tranches on each of October 12, 2021 and January 14, 2022. Further, the Company retained development and commercialization rights in the U.S., Canada, Brazil, Turkey, and Japan (“Acer Territory”). The companies will split net profits from the Acer Territory 60%:40% in favor of Relief. Relief licensed the rights for the rest of the world (“Relief Territory”), where the Company will receive from Relief a 15% royalty on all net sales received in the Relief Territory. The Company could also receive a total of $6.0 million in milestone payments based on the first European marketing approvals of ACER-001 for a UCD and MSUD. There is no guarantee that ACER-001 will receive regulatory authority approval in any territory or become commercially available for the indications under investigation. The terms of the Collaboration Agreement and Option Agreement are further described below in the Revenue Recognition and Accounting for Collaboration Agreements section of Note 2, Significant Accounting Policies. 

On March 4, 2022, the Company entered into a Credit Agreement (the “SWK Credit Agreement”) with the lenders party thereto and SWK Funding LLC (“SWK”), as the agent, sole lead arranger and sole bookrunner, which provided for a senior secured term loan facility in an aggregate amount of $6.5 million in a single borrowing (the “Bridge Loan”). The Bridge Loan funding closed on March 14, 2022. The proceeds of the Bridge Loan were used to pay fees, costs and expenses related to the SWK Credit Agreement, the Secured Convertible Note Purchase Agreement (as defined and described below) and the Marathon Credit Agreement (as defined and described below) and for other working capital and general corporate purposes.

The Bridge Loan bears interest at an annual rate of the sum of (i) 3-month LIBOR (or such other rate as may be agreed by the Company and SWK following the date on which 3-month LIBOR is no longer available), subject to a 1% floor, plus (ii) a margin of 11%, with such interest payable quarterly in arrears. In the event of default, the interest rate will increase by 3% per annum over the contract rate effective at the time of default but shall not be higher than the maximum rate permitted to be charged by applicable laws. The Company has the option to capitalize such interest commencing on the date on which the Bridge Loan was funded and continuing until November 15, 2022. Commencing on November 15, 2022, the principal amount of the Bridge Loan will amortize at a rate of $0.7 million, payable quarterly. The final maturity date of the Bridge Loan is (a) if full approval by FDA for marketing of ACER-001 (“ACER-001 Approval”) occurs on or before September 30, 2022, then the date which is 12 business days after ACER-001 Approval, or (b) if ACER-001 Approval does not occur on or before September 30, 2022, then March 4, 2024. The Company has the option to prepay the Bridge Loan in whole or in part. Upon the repayment of the Bridge Loan (whether voluntary or at scheduled maturity), the Company must pay an exit fee so that SWK receives an aggregate amount (inclusive of all principal, interest and origination and other fees paid to SWK under the SWK Credit Agreement on or prior to the prepayment date) equal to (a) 1.3 times the outstanding principal amount of the Bridge Loan, plus any and all payment-in-kind interest payments, if ACER-001 Approval or such payment occurs on or prior to September 30, 2022, or (b) 1.5 times the outstanding principal amount of the Bridge Loan, plus any and all payment-in-kind interest amounts, if each of ACER-001 Approval and such payment does not occur until after September 30, 2022. Under the Bridge Loan, the Company was required to maintain a cash and cash equivalents balance of not less than $4.0 million as of 20 days following receipt of FDA’s Complete Response Letter in June 2022 with respect to the Company’s NDA in respect of ACER-001 (sodium phenylbutyrate) for oral suspension for the treatment of patients with UCDs and is then required to maintain a cash and cash equivalents balance of not less than $6.5 million as of 40 days following receipt of that Complete Response Letter for the remainder of the time that the Bridge Loan is outstanding. The minimum cash balance would be reduced to $2.0 million in the event of positive safety and efficacy data for ACER-801 from a Phase 2a trial.

The Bridge Loan is secured by a first priority lien on all assets of the Company and any of its future subsidiaries pursuant to a Guarantee and Collateral Agreement entered into on March 4, 2022, between the Company and SWK, as agent (the “SWK Security Agreement”). The SWK Credit Agreement contains customary representations and warranties and affirmative and negative covenants. The Company paid to SWK $0.1 million in origination fees on the date on which the Bridge Loan was funded.

In addition, the Company issued a warrant (the “SWK Warrant”) to purchase 150,000 shares of the Company’s common stock at an exercise price of $2.46 per share. SWK may exercise the SWK Warrant in accordance with the terms thereof for all or any part of such shares of common stock from the date on which the Bridge Loan was funded until and including March 4, 2029.

On March 4, 2022, the Company also entered into a Secured Convertible Note Purchase Agreement with MAM Aardvark, LLC (“Marathon”) and Marathon Healthcare Finance Fund, L.P. (“Marathon Fund” and together with “Marathon” each a “Holder” and collectively the “Holders”) (the “Secured Convertible Note Purchase Agreement”) pursuant to which the Company issued and sold to the Holders secured convertible notes (the “Secured Convertible Notes”) in an aggregate amount of up to $6.0 million (the “Convertible Note Financing”). The Convertible Note Financing closed on March 14, 2022. The proceeds of the Convertible Note Financing are being used to pay fees, costs and expenses related to the SWK Credit Agreement, the Secured Convertible Note Purchase Agreement and the Marathon Credit Agreement and for other working capital and general corporate purposes.

The Secured Convertible Notes bear interest at an annual rate of 6.5%, with such interest payable quarterly; provided, however, that until the first to occur of ACER-001 Approval and the repayment in full of the Bridge Loan, interest will not be payable in cash, but will accrue and be payable in cash upon the earlier of a) the repayment of all obligations under the Bridge Loan and termination of such Bridge Loan or b) within three business days of ACER-001 Approval. Subject to the restrictions set forth in an agreement among each of the Holders and SWK, as agent and lender, and any other intercreditor or subordination agreement entered into in connection with the Term Loan (defined below), each of the Holders has the right, during the 30-day periods beginning 12 months, 18 months and 24 months after the closing date of the Convertible Note Financing, to require the Company to redeem the Convertible Secured Note held by such Holder at a redemption price of the outstanding principal amount plus any accrued but unpaid interest. Each of the Holders also has the right to convert all or any portion of the outstanding principal amount plus any accrued but unpaid interest under the Convertible Secured Note held by such Holder into shares of common stock at a conversion price of $2.50 per share, subject to adjustment. Each Holder has certain rights with respect to the registration by the Company for resale of the shares of common stock issuable upon conversion of the Secured Convertible Note held by such Holder which are forth in the Secured Convertible Note Purchase Agreement. Any outstanding principal, together with all accrued and unpaid interest, will be payable on the earlier of the third anniversary of the date of issuance, or upon a change of control of the Company.

Pursuant to the Secured Convertible Note Purchase Agreement, the Secured Convertible Notes are secured by a lien on collateral representing substantially all assets of the Company, although such security interest is subordinated to the Company’s obligations under the SWK Credit Agreement and may also be subordinated to the Company’s obligations under the Marathon Credit Agreement.

On March 4, 2022, the Company also entered into a Credit Agreement (the “Marathon Credit Agreement”) with the lenders party thereto and Marathon, as the agent, sole lead arranger and sole bookrunner, which provides for a senior secured term loan facility in an aggregate amount of up to $42.5 million in a single borrowing (the “Term Loan”). The Term Loan will be available to be borrowed only following ACER-001 Approval and until December 31, 2022 (i.e., if ACER-001 Approval does not occur on or before December 31, 2022, then the Term Loan will not be available unless the Company is able to obtain an extension for the time period beyond December 31, 2022, to the actual PDUFA target action date), and funding of the Term Loan is also subject to the satisfaction of conditions as set forth in the Marathon Credit Agreement. Although the Company’s resubmitted NDA in respect of ACER-001 (sodium phenylbutyrate) for oral suspension for the treatment of patients with UCDs has been accepted for substantive review by FDA, the Prescription Drug User Fee Act (“PDUFA”) target action date is January 15, 2023. The Term Loan, if it becomes available, will be used to refinance certain other indebtedness of the Company (including the Bridge Loan), to pay fees, costs and expenses related to the Marathon Credit Agreement and for other working capital and general corporate purposes. Should the Term Loan become available, the Company will pay Marathon a commitment fee equal to 1.5% of the Term Loan amount. The Marathon Credit Agreement also includes an accordion feature pursuant to which the Company, Marathon and the lenders under the Marathon Credit Agreement may agree to increase the Term Loan commitments by up to an additional $50.0 million dollars for a total commitment of $92.5 million; provided, however, that any such increase is within the sole discretion of each party (i.e., the Company cannot unilaterally trigger such an increase).

The Term Loan would bear interest at an annual rate of 13.5% and would be payable quarterly in arrears. The Company would have the option to capitalize up to 4% of such interest commencing on the date on which the Term Loan is funded (the “Term Loan Funding Date”) and continuing until the third anniversary of the Term Loan Funding Date. Commencing on the third anniversary of the Term Loan Funding Date, the principal outstanding amount of the Term Loan would amortize at a rate of 2.78%, payable monthly. The final maturity date of the Term Loan would be the earlier of six years after the Term Loan Funding Date or December 31, 2028. The Company would have the option to prepay the Term Loan in whole or in part at any time, subject to a prepayment fee equal to (a) if the prepayment is made prior to March 4, 2025, then the greater of 5% or the amount of interest that would have accrued from the

date of prepayment until March 4, 2025, (b) if the prepayment is made on or after March 4, 2025, but prior to March 4, 2026, then 3%, (c) if the prepayment is made on or after March 4, 2026, but prior to March 4, 2027, then 2%, or (d) if the prepayment is made on or after March 4, 2027, then 1%.

The Term Loan would be secured by a first priority lien on all assets of the Company and any of its future subsidiaries pursuant to a Guarantee and Collateral Agreement to be entered into on the Term Loan Funding Date between the Company and Marathon, as agent (the “Marathon Security Agreement”). The Marathon Credit Agreement contains customary representations and warranties and affirmative and negative covenants. The Company paid $0.2 million in commitment fees to Marathon in connection with obtaining the commitments in respect of the Term Loan and will pay $0.6 million in additional commitment fees to Marathon following ACER-001 Approval or any change of control of the Company or sale or transfer of the ACER-001 product. 

In connection with the Marathon Credit Agreement, on March 4, 2022, the Company, Marathon and the Marathon Fund also entered into a Synthetic Royalty Agreement (the “Royalty Agreement”) pursuant to which, in the event of the funding of the Term Loan, the Company will pay Marathon and the Marathon Fund, on a quarterly basis, 2% of certain aggregate commercial revenue from sales of ACER-001 during that quarter (i.e., 2% of the net sales and of the amount of certain other payments), subject to a cap on the aggregate amount of such payments of $15.0 million. Upon a change of control of the Company or the sale of the ACER-001 business to a third party, the Company would pay Marathon and the Marathon Fund the difference between $15.0 million and the aggregate amount of the payments previously made by the Company to Marathon and the Marathon Fund pursuant to the Royalty Agreement.

The Company’s cash and cash equivalents available at June 30, 2022 are expected to be sufficient to fund its anticipated operating and capital requirements through the third quarter of 2022.

Management expects to continue to finance operations through the issuance of additional equity or debt securities, non-dilutive funding, and/or through strategic collaborations. Any transactions which occur may contain covenants that restrict the ability of management to operate the business and any securities issued may have rights, preferences, or privileges senior to the Company’s common stock and may dilute the ownership of current stockholders of the Company.

Going Concern

Going Concern

The accompanying financial statements have been prepared in conformity with accounting principles generally accepted in the U.S. (“GAAP”), which contemplate continuation of the Company as a going concern. The Company has not established a source of commercial product revenues and, as such, has been dependent on funding operations through the sale of equity securities, through a collaboration agreement, and through debt instruments. Since inception, the Company has experienced significant losses and incurred negative cash flows from operations. The Company has spent, and expects to continue to spend, a substantial amount of funds in connection with implementing its business strategy, including its planned product development efforts and potential precommercial activities.

As of June 30, 2022, the Company had cash and cash equivalents of $14.5 million and current liabilities of $17.5 million, which include $6.3 million associated with deferred collaboration funding (see Revenue Recognition and Accounting for Collaboration Agreements below in Note 2, Significant Accounting Policies). The Company’s cash and cash equivalents available at June 30, 2022 are expected to be sufficient to fund its anticipated operating and capital requirements through the third quarter of 2022.

The Company will need to raise additional capital to fund continued operations beyond the third quarter of 2022 because neither FDA approval of ACER-001 nor subsequent product revenues are assured. The Company may not be successful in its efforts to raise additional funds or achieve profitable operations. The Company continues to explore potential opportunities and alternatives to obtain the additional resources that will be necessary to support its ongoing operations beyond the third quarter of 2022, including raising additional capital through either private or public equity or debt financing or additional program collaborations or non-dilutive funding, as well as using its ATM facility which has $36.7 million available as of June 30, 2022 and/or its remaining $11.8 million available under the equity line facility entered into on April 30, 2020 with Lincoln Park. (See At-the-Market Facility and Common Stock Purchase Agreement below in Note 9.) Due to the SEC’s “baby shelf rules,” which prohibit companies with a public float of less than $75 million from issuing securities under a shelf registration statement in excess of one-third of such company’s public float in a 12-month period, the Company is currently only able to issue a limited number of shares under its ATM facility which aggregate to no more than one-third of its public float. Additionally, there can be no assurance that the Company will be able to receive the entire obligation amount from Lincoln Park because the purchase agreement contains limitations, restrictions, requirements, events of default, and other provisions that could limit the Company’s ability to cause Lincoln Park to buy common stock from the Company. As noted above, the Company also has available to it the $42.5 million Term Loan conditional upon the approval of ACER-001 by FDA; provided, however, that if ACER-001 Approval does not occur on or before December 31, 2022, then the Term Loan will not be available unless the Company is able to obtain an extension for the time period beyond December 31, 2022, to the actual PDUFA target action date. The PDUFA target action date for the Company’s resubmitted NDA in respect of ACER-001 (sodium phenylbutyrate) for oral suspension for the treatments of patients with UCDs is January 15, 2023. The Company has no commitments for any additional financing, except for the agreement with Lincoln Park, and the Marathon Credit Agreement for the Term Loan. Any

amounts raised will be used for further development of its product candidates, precommercial activities, and for other working capital purposes.

If the Company is unable to obtain additional funding to support its current or proposed activities and operations, it may not be able to continue its operations as currently anticipated, which may require it to suspend or terminate any ongoing development activities, modify its business plan, curtail various aspects of its operations, cease operations, or seek relief under applicable bankruptcy laws. In such event, the Company’s stockholders may lose a substantial portion or even all of their investment.

These factors individually and collectively raise substantial doubt about the Company’s ability to continue as a going concern for at least 12 months from the date these financial statements are available, or August 15, 2023. The accompanying unaudited condensed financial statements do not include any adjustments or classifications that may result from the possible inability of the Company to continue as a going concern.

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Significant Accounting Policies (As Restated) (Policies)

6 Months Ended

Jun. 30, 2022

Accounting Policies [Abstract]

Use of Estimates

Use of Estimates

The Company’s accounting principles require management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of assets and liabilities at the date of the condensed financial statements and reported amounts of revenues and expenses during the reporting period. From time to time, estimates having relatively higher significance include determination of stand-alone selling price and variable consideration estimates for purposes of revenue recognition, deferred collaboration funding, stock-based compensation, inputs to fair value for debt, contract manufacturing and clinical trial accruals, and income taxes. Actual results could differ from those estimates and changes in estimates may occur.

Revenue Recognition and Accounting for Collaboration Agreements

Revenue Recognition and Accounting for Collaboration Agreements

The Company’s revenues are generated from a single collaboration agreement which included the sale of a license of intellectual property. The Company analyzes its collaboration agreements to assess whether they are within the scope of ASC Topic 808, Collaborative Arrangements, (“ASC 808”) to determine whether such arrangements involve joint operating activities performed by parties that are both active participants in the activities and exposed to significant risks and rewards that are dependent on the commercial success of such activities. To the extent the arrangement is within the scope of ASC 808, the Company assesses whether aspects of the arrangement between the Company and the collaboration partner are within the scope of other accounting literature. If the Company concludes that some or all aspects of the arrangement represent a transaction with a customer, the Company accounts for those aspects of the arrangement within the scope of ASC Topic 606, Revenue from Contracts with Customers (“ASC 606”). If the Company concludes that some or all aspects of the arrangement are within the scope of ASC 808 and do not represent a transaction with a customer, the Company recognizes the Company’s share of the allocation of the shared costs incurred with respect to the jointly conducted activities as a component of the related expense in the period incurred. Pursuant to ASC 606, a customer is a party that has contracted with an entity to obtain goods or services that are an output of the entity’s ordinary activities in exchange for consideration. Under ASC 606, an entity 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. If the Company concludes a counter-party to a transaction is not a customer or otherwise not within the scope of ASC 606 or ASC 808, the Company considers the guidance in other accounting literature as applicable or by analogy to account for such transaction.

The Company determines the units of account within the collaborative arrangement utilizing the guidance in ASC 606 to determine which promised goods or services are distinct. In order for a promised good or service to be considered “distinct” under ASC 606, 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 (i.e., the good or service is capable of being distinct), and the entity’s promise to transfer the good or service to the customer is separately identifiable from other promises in the contract (i.e., the promise to transfer the good or service is distinct within the context of the contract).

For any units of account that fall within the scope of ASC 606, where the other party is a customer, the Company evaluates the separate performance obligation(s) under each contract, determines the transaction price, allocates the transaction price to each performance obligation considering the estimated stand-alone selling prices of the services and recognizes revenue upon the satisfaction of such obligations at a point in time or over time dependent on the satisfaction of one of the following criteria: (1) the customer simultaneously receives and consumes the economic benefits provided by the vendor’s performance; (2) the vendor creates or enhances an asset controlled by the customer; and (3) the vendor’s performance does not create an asset for which the vendor has an alternative use and the vendor has an enforceable right to payment for performance completed to date.

Variable consideration is included in the transaction price only to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved.

Revenue for a sales-based or usage-based royalty promised in exchange for a license of intellectual property is recognized only when (or as) the later of the following events occurs: (i) the subsequent sale or usage occurs; or (ii) the performance obligation to which some or all of the sales-based or usage-based royalty has been allocated has been satisfied (or partially satisfied).

On January 25, 2021, the Company entered into the Option Agreement with Relief pursuant to which the Company granted Relief the Exclusivity Option to pursue a potential collaboration and license arrangement with the Company for the development, regulatory approval and commercialization of ACER-001 for the treatment of various inborn errors of metabolism, including UCDs and MSUD. The Option Agreement provided a period of time up to June 30, 2021 for the parties to perform additional due diligence and to work toward negotiation and execution of a definitive agreement with respect to the potential collaboration for ACER‑001. In consideration for the grant of the Exclusivity Option, (i) the Company received from Relief an upfront nonrefundable payment of $1.0 million, (ii) Relief provided to the Company a 12-month secured loan in the principal amount of $4.0 million, as evidenced by the Note issued by the Company to Relief, and (iii) the Company granted to Relief a security interest in all of its assets to secure performance of the Note, as evidenced by the Security Agreement. The Note was repayable in one lump sum within 12 months from issuance and bore interest at a rate equal to 6% per annum. If a definitive agreement with respect to the potential collaboration had not been executed by the parties on or before June 30, 2021, the Exclusivity Option would have terminated and the Note would have been repayable by the Company upon maturity.

On March 19, 2021, the Company entered into the Collaboration Agreement with Relief providing for the development and commercialization of ACER-001 for the treatment of various inborn errors of metabolism, including for the treatment of UCDs and MSUD. The Company received a $10.0 million cash payment from Relief (consisting of a $14.0 million “Reimbursement Payment” from Relief to the Company offset by repayment of the $4.0 million outstanding balance of the Note, plus interest earned through the date of the Collaboration Agreement), and Relief released its security interest in all of the Company’s assets pursuant to the Promissory Note. Under the terms of the Collaboration Agreement, Relief committed to pay the Company up to an additional $20.0 million for U.S. development and commercial launch costs for the UCDs and MSUD indications. During the three months ended June 30, 2021, the Company received from Relief the $10.0 million First Development Payment. The Company was contractually entitled to receive from Relief an additional $10.0 million Second Development Payment conditioned upon FDA’s acceptance of an NDA for ACER-001 in a UCD for filing and review. This acceptance was received on October 4, 2021. On October 6, 2021, the Company entered into a Waiver and Agreement with Relief to amend the timing for the Second Development Payment. The Company received the Second Development Payment in two $5.0 million tranches on each of October 12, 2021 and January 14, 2022. Further, the Company retained development and commercialization rights in the U.S., Canada, Brazil, Turkey and Japan (“Acer Territory”). The companies will split net profits from the Acer Territory 60%:40% in favor of Relief. Relief licensed the rights for the rest of the world (“Relief Territory”), where the Company will receive from Relief a 15% royalty on all net sales received in the Relief Territory. The Company could also receive a total of $6.0 million in milestone payments based on the first European (EU) marketing approvals for a UCD and MSUD. There is no guarantee that ACER-001 will receive regulatory authority approval in any territory or become commercially available for the indications under investigation.

The Company assessed these agreements in accordance with the authoritative literature and concluded that they meet the definition of a collaborative arrangement per ASC 808. For certain parts of the Collaboration Agreement, the Company concluded that Relief represented a customer while, for other parts of the Collaboration Agreement, Relief did not represent a customer. The units of account of the Collaboration Agreement where Relief does not represent a customer are outside of the scope of ASC 606. The Company also determined that the development and commercialization services and Relief’s right to 60% profit in the Acer Territory is within the scope of ASC 730, with regard to funded research and development arrangements.

The Company concluded the promised goods and services contained in the Collaboration Agreement, represented two distinct units of account consisting of a license in the Relief Territory, and a combined promise for the development and commercialization of ACER-001 in the Acer Territory and the payment of 60% net profit from that territory (together, the “Services”). The stand-alone selling price was estimated for each distinct unit of account utilizing an estimate of discounted cashflows associated with each.

The Company determined that the transaction price at the outset of the Collaboration Agreement was $25.0 million, including the Option Fee of $1.0 million, the Reimbursement Payment of $14.0 million, and the First Development Payment of $10.0 million. The Company concluded that consistent with the evaluation of variable consideration, using the most likely amount approach, the Second Development Payment as well as the milestone payments for EU marketing approvals, should be fully constrained until the contingency associated with each payment has been resolved and the Company’s NDA is accepted for review by FDA, and Relief receives EU marketing approval, respectively.

Since ASC 808 does not provide recognition and measurement guidance for collaborative arrangements, the Company applied the principles of ASC 606 for those units of account where Relief is a customer and ASC 730-20 for the funded research and development activities. The license revenue was recognized at the point where the Company determined control was transferred to the customer. The combined unit of account for the Services associated with the allocation of the initial transaction price will be recognized over the service period through the anticipated date of first commercial sale of the ACER-001 approved product in the U.S. The Company also determined that the Services associated with the allocation of the initial transaction price would be satisfied

over time as measured using actual costs as incurred by the Company toward the identified development and commercialization services agreed to between the parties up to the point of first commercial sale of the ACER-001 product. Research and development expenses and general and administrative expenses, as they relate to activities governed by the Collaboration Agreement, incurred in satisfying the Services unit-of-account will be recognized as contra-expense within their respective categories, consistent with the presentation guidance in ASC Topic 730, Research and Development (“ASC 730”).

The Company recognizes a receivable under the Collaboration Agreement when the consideration to be received is deemed unconditional, or when only the passage of time is required before payment of that consideration is due. Amounts receivable under the Collaboration Agreement plus payments received from Relief, net of the amounts recorded as license revenue and as offsets to research and development expenses and to general and administrative expenses, are reported as deferred collaboration funding.

At June 30, 2022, the amount of deferred collaboration funding associated with unsatisfied promises under the Collaboration Agreement amounted to $14.2 million. The Company has recorded $6.3 million as a current liability, which equates to the Company’s estimate of remaining spending under the Collaboration Agreement and which the Company estimates will be recognized within the next 12 months up to the point of the first commercial sale of ACER-001. The remaining balance of $7.9 million is recorded as a non-current liability and represents the estimated amount that would be taken against future net profit payments made to Relief should they occur. The Company expects to recognize this deferred collaboration funding as it incurs expenses associated with performing the Services up to the date of first commercial sale in the Acer Territory and through the end of the effective date of the Collaboration Agreement. At June 30, 2022, deferred collaboration funding was composed of $35.0 million received from Relief, offset by $1.3 million recognized as license revenue during the year ended December 31, 2021 and $10.7 million recorded as an offset to research and development expenses and $8.8 million recorded as an offset to general and administrative expenses subsequent to signing the Collaboration Agreement and through the date of this report.

Cash and Cash Equivalents

Cash and Cash Equivalents

The Company considers all highly liquid investments with maturities of three months or less at the date of purchase to be cash equivalents. Financial instruments that potentially subject the Company to concentration of credit risk consist principally of cash deposits. Accounts at each institution are insured by the Federal Deposit Insurance Corporation (“FDIC”) up to $250,000. At June 30, 2022 and December 31, 2021, the Company had $14.2 million and $12.5 million, respectively, in excess of the FDIC insured limit.

Under the Bridge Loan, the Company was required to maintain a cash and cash equivalents balance of not less than $4.0 million as of 20 days following receipt of FDA’s Complete Response Letter in June 2022 with respect to the Company’s NDA in respect of ACER-001 (sodium phenylbutyrate) for oral suspension for the treatment of patients with UCDs and is then required to maintain a cash and cash equivalents balance of not less than $6.5 million as of 40 days following receipt of that Complete Response Letter for the remainder of the time that the Bridge Loan is outstanding. The minimum cash balance would be reduced to $2.0 million in the event of positive safety and efficacy data for ACER-801 from a Phase 2a trial.

The Company recognized a $4.0 million non-cash reduction in a secured loan from Relief during the six months ended June 30, 2021, since the Reimbursement Payment from Relief was received net of the amount of principal and interest due in connection with the secured loan.

Fair Value of Financial Instruments

Fair Value of Financial Instruments

ASC Topic 820, Fair Value Measurement (“ASC 820”), establishes a fair value hierarchy for instruments measured at fair value that distinguishes between assumptions based on market data (observable inputs) and the Company’s own assumptions (unobservable inputs). 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 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.

ASC 820 identifies fair value as the exchange price, or exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As a basis for considering market participant assumptions in fair value measurements, ASC 820 establishes a three-tier fair value hierarchy that distinguishes among the following:

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

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

•            Level 3—Valuations based on inputs that are unobservable and significant to the overall fair value measurement.

To the extent that the 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.

Financial instruments consist of cash equivalents, collaboration receivable, accounts payable, accrued expenses, and debt instruments. These financial instruments are stated at their respective historical carrying amounts, which approximate fair value due to their short-term nature, except for cash equivalents and debt instruments, which were marked to market at the end of each reporting period. See Note 7 for additional information on the fair value of the debt liabilities.

The Company elected the fair value option for both its Bridge Loan and its Secured Convertible Notes dated March 14, 2022 (see Note 7). The Company adjusts both the Bridge Loan and the Secured Convertible Notes to fair value through the change in fair value of debt in the accompanying unaudited condensed statements of operations. Subsequent unrealized gains and losses on items for which the fair value option is elected are reported in the accompanying unaudited condensed statement of operations.

Debt

Debt

Convertible notes are regarded as compound instruments, consisting of a liability component and an equity component. The Company determined that it is eligible for the fair value option election in connection with the Bridge Loan and the Secured Convertible Notes. Each instrument met the definition of a “recognized financial liability” which is an acceptable financial instrument eligible for the fair value option under ASC 825-10-15-4 and do not meet the definition of any of the financial instruments found within ASC 825-10-15-5 that are not eligible for the fair value option. At the date of issuance, the fair value for each instrument is derived from the instrument’s implied discount rate at inception.

Research and Development Expenses

Research and Development Expenses

Research and development costs are expensed as incurred and include compensation and related benefits, license fees and third-party contracted research and manufacturing consultants. The Company sometimes makes nonrefundable advance payments for goods and services that will be used in future research and development activities. These payments are capitalized and recorded as an expense in the period that the goods are received or that the services are performed. From time to time, in connection with the Collaboration Agreement with Relief, the Company may recognize “contra-expense” for the research and development activities which were funded by the Collaboration Agreement. These contra-expense amounts are disclosed parenthetically on the face of the financial statements.

General and Administrative Expenses

General and Administrative Expenses

General and administrative expenses consist primarily of employee-related expenses, including salaries, benefits, and stock-based compensation; precommercial costs; and professional fees for legal, business consulting, auditing, and tax services. The Company expects that general and administrative expenses will be substantial in the future. From time to time, in connection with the Collaboration Agreement with Relief, the Company may recognize “contra-expense” for the general and administrative activities which were funded by the Collaboration Agreement. These contra-expense amounts are disclosed parenthetically on the face of the financial statements.

Clinical Trial and Preclinical Study Expenses

Clinical Trial and Preclinical Study Expenses

The Company makes estimates of prepaid and/or accrued expenses as of each balance sheet date in its financial statements based on certain facts and circumstances at that time. The Company’s accrued expenses for preclinical studies and clinical trials are based on estimates of costs incurred for services provided by contract research organizations (“CROs”), manufacturing organizations, and for other trial- and study-related activities. Payments under the Company’s agreements with external service providers depend on a number of factors such as site initiation, patient screening, enrollment, delivery of reports, and other events. In accruing for these activities, the Company obtains information from various sources and estimates the level of effort or expense allocated to each period. Adjustments to research and development expenses may be necessary in future periods as the Company’s estimates change. As these activities are generally material to the Company’s financial statements, subsequent changes in estimates may result in a material change in the Company’s accruals. No material changes in estimates were recognized in either of the three or six months ended June 30, 2022 or 2021. Accounts payable and accrued expenses include costs associated with preclinical or clinical studies of $0.3 million and $0.2 million at June 30, 2022 and December 31, 2021, respectively.

Stock-Based Compensation

Stock-Based Compensation

The Company records stock-based payments at fair value. The measurement date for compensation expense related to awards is generally the date of the grant. The fair value of awards is recognized as an expense in the condensed statements of operations over the requisite service period, which is generally the vesting period. The fair value of options is calculated using the Black-Scholes option pricing model. A limited number of option grants are periodically made to non-employee contractors, and the Company utilizes the simplified method to value these awards. This option valuation model requires the use of assumptions including, among others, the volatility of stock price, the expected term of the option, and the risk-free interest rate.

The following assumptions were used to estimate the fair value of stock options granted during the six months ended June 30, 2022 and 2021 using the Black-Scholes option pricing model:

	2022	2021
Risk-free interest rate	1.18%-1.83%	0.37%- 0.62%
Expected life (years)	6.25	6.25
Expected volatility	113.0% - 115.0%	92.4%
Dividend rate	0%	0%

Due to its limited operating history and a limited trading history of its common stock in relation to the life of its standard option grants, the Company estimates the volatility of its stock in consideration of a number of factors including the Company’s available stock price history and the stock price volatility of comparable public companies. The expected term of a stock option granted to employees and directors (including non-employee directors) is based on the average of the contractual term (generally ten years) and the vesting period. For other non-employee options, the expected term is the contractual term. The assumed dividend yield is based upon the Company’s expectation of not paying dividends in the foreseeable future.  The Company recognizes forfeitures related to employee stock-based awards as they occur. The risk-free rate for periods within the expected life of the option is based upon the U.S. Treasury yield curve in effect at the time of grant. Option awards are granted at an exercise price equal to the closing market price of the Company’s common stock on the Nasdaq Capital Market on the date of grant.

Goodwill

Goodwill

Goodwill represents the excess of the purchase price (consideration paid plus net liabilities assumed) of an acquired business over the fair value of the underlying net tangible and intangible assets. The Company’s goodwill is allocated to the Company’s single reporting unit. The Company evaluates the recoverability of goodwill according to ASC Topic 350, Intangibles – Goodwill and Other annually, or more frequently if events or changes in circumstances indicate that the carrying value of goodwill might be impaired. The Company may opt to perform a qualitative assessment or a quantitative impairment test to determine whether goodwill is impaired. If the Company were to determine based on a qualitative assessment that it was more likely than not that the fair value of the reporting unit was less than its carrying value, a quantitative impairment test would then be performed. The quantitative impairment test compares the fair value of the reporting unit with its carrying amount, including goodwill. If the estimated fair value of the reporting unit is less than its carrying amount, a goodwill impairment would be recognized for the difference. The Company performed a qualitative analysis of goodwill as of June 21, 2022 as it considered the Complete Response Letter received from FDA in June 2022 with respect to the Company’s NDA in respect of ACER-001 (sodium phenylbutyrate) for oral suspension for the treatment of patients with UCDs to be a triggering event requiring it to perform that analysis. Management concluded that it was more likely than not that the fair value of the reporting unit was greater than its carrying amount at June 30, 2022.

Foreign Currency Transactions Gain/(Loss)

Foreign Currency Transaction Gain/(Loss)

Gains and losses arising from transactions and revaluation of balances denominated in currencies other than U.S. dollars are recorded in foreign currency transaction gain/(loss) on the statements of operations.

Income Taxes

Income Taxes

The Company is primarily subject to U.S. federal and Massachusetts state income taxes. The Company’s tax returns for years 2015 through present are open to tax examinations by U.S. federal and state tax authorities; however, carryforward attributes that were generated prior to January 1, 2015 remain subject to adjustment upon examination if they either have been utilized or will be utilized in a future period. For federal and state income taxes, deferred tax assets and liabilities are recognized based upon temporary differences between the financial statement and the tax basis of assets and liabilities. Deferred income taxes are based upon prescribed rates and enacted laws applicable to periods in which differences are expected to reverse. The Company recorded no income tax expense or benefit during the three or six months ended June 30, 2022 and 2021, due to a full valuation allowance recognized against

its net deferred tax assets. A valuation allowance is recorded when it is more likely than not that some portion or all of the deferred tax assets will not be realized. Accordingly, the Company provides a valuation allowance, if necessary, to reduce deferred tax assets to amounts that are realizable. Utilization of net operating losses may be subject to substantial annual limitations due to the “change in ownership” provisions of the Internal Revenue Code of 1986, and similar state provisions. The annual limitations may result in the expiration of net operating losses before utilization.

The tax positions taken or expected to be taken in the course of preparing the Company’s tax returns are required to be evaluated to determine whether the tax positions are “more-likely-than-not” of being sustained by the applicable tax authority. Tax positions not deemed to meet a more-likely-than-not threshold would be recorded as a tax expense in the current year. There were no uncertain tax positions that require accrual or disclosure in the financial statements as of June 30, 2022 and 2021. The Company’s policy is to recognize interest and penalties related to income tax, if any, in income tax expense. As of June 30, 2022 and 2021, the Company had no accruals for interest or penalties related to income tax matters.

The Coronavirus Aid, Relief and Economic Security Act (the “CARES Act”) was enacted in the U.S. on March 27, 2020. The CARES Act, among other things, includes provisions relating to refundable payroll tax credits, deferment of employer side social security payments, net operating loss carryback periods, alternative minimum tax credit refunds, modifications to the net interest deduction limitations, increased limitations on qualified charitable contributions, and technical corrections to tax depreciation methods for qualified improvement property. The Company is required to recognize the effects of tax law changes in the period of enactment. The enactment of the CARES Act did not result in material adjustments for the income tax provision for the three or six months ended June 30, 2022 or to the Company’s assessment of the realizability of deferred tax assets as the carry back of net operating losses was used as a source of income. There were no other effects to the Company’s tax provision as a result of the CARES Act as of June 30, 2022.

Basic and Diluted Net Loss per Common Share (As Restated)

Basic and Diluted Net Loss per Common Share (As Restated)

Basic and diluted net loss per common share is computed using the weighted average number of common shares outstanding during the period. Diluted net loss per share is computed using the sum of the weighted average number of common shares outstanding during the period and, in those instances where it would be dilutive, the weighted average number of potential shares of common stock, including the assumed exercise of stock options and warrants, the impact of unvested restricted stock, and the potential shares assuming conversion of convertible debt. Basic and diluted shares outstanding are the same for each period presented when all common stock equivalents, including potential shares from convertible debt and warrants, would be antidilutive due to the net losses incurred, except in certain instances as noted below.

The two-class method is an earnings allocation formula that treats a participating security such as a warrant as having rights to earnings that otherwise would have been available to common stockholders. However, the two-class method does not impact the net loss per share of common stock as the Company has been in a net loss position and while our warrants are considered a participating security, the terms of the warrant agreement does not obligate them to participate in losses. Diluted net income per share is computed using the more dilutive of (a) the two-class method or (b) the if-converted method or treasury stock method, as applicable, to the potentially dilutive instruments. A contract that may be settled in shares and is reported as an asset or liability for accounting purposes may require an adjustment to the numerator for any changes in income or loss that would result if the contract had been reported as an equity instrument for accounting purposes during the period, and doing so is dilutive to the net loss per share calculation (including as a result of the inclusion of underlying shares in the net loss per share calculation).

Recently Adopted Accounting Pronouncements

Recently Adopted Accounting Pronouncements

In August 2020, the FASB issued ASU No. 2020-06, Debt – Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging – Contracts in Entity’s Own Equity (Subtopic 815-40), which simplifies the accounting for convertible instruments by removing, in certain cases, the need for models that required separate accounting for embedded conversion features and also amends the guidance for the derivatives scope exceptions for contracts in an entity’s own equity. This ASU also requires expanded disclosures, including additional information related to the terms and features of convertible instruments and information about events or conditions that cause conversion contingencies to be met or conversion terms to be significantly changed. The Company early adopted ASU No. 2020-06 in the first quarter of 2021. See Note 6 regarding the Secured Convertible Notes which were recognized in the first quarter of 2022 consistent with the adoption of this guidance.

In May 2021, the FASB issued ASU No. 2021-04, Earnings Per Share (Topic 260), Debt—Modifications and Extinguishments (Subtopic 470-50), Compensation—Stock Compensation (Topic 718), and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40): Issuer’s Accounting for Certain Modifications or Exchanges of Freestanding Equity-Classified Written Call Options (a consensus of the FASB Emerging Issues Task Force), which clarifies and reduces diversity in issuers’ accounting for modifications or exchanges of freestanding equity-classified written call options that remain

equity classified after modification or exchange. The Company adopted ASU No. 2021-04 in the first quarter of 2022. There was no impact on the Company’s financial statements or disclosures as a result of the adoption of this guidance.

In November 2021, the FASB issued ASU No. 2021-10, Government Assistance (Topic 832): Disclosures by Business Entities about Government Assistance, which requires annual disclosures regarding transactions with a government that are accounted for by applying a grant or contribution accounting model. The Company adopted ASU No. 2021-10 in the fourth quarter of 2021. There was no impact on the Company’s financial statements or disclosures as a result of the adoption of this guidance.

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Nature of Operations and Basis of Presentation (Tables)

6 Months Ended

Jun. 30, 2022

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Effects of Error Correction on Unaudited Condensed Interim Statement of Operations

The following table presents the effects of the error correction on the Company’s Unaudited Condensed Interim Statement of Operations for the three and six months ended June 30, 2022

	Three Months Ended June 30,						Six Months Ended June 30,
	2022			2021			2022			2021
Net loss per share – basic (as restated)	$	(0.17	)	$	(0.21	)	$	(0.80	)	$	(0.54	)
Weighted average common shares outstanding – basic (as restated)		15,273,707			14,310,244			14,794,637			14,225,551
Net loss per share – diluted (as restated) (1)	$	(0.30	)	$	(0.21	)	$	(0.83	)	$	(0.54	)
Weighted average common shares outstanding – diluted (as restated)		17,681,400			14,310,244			16,372,537			14,225,551

(1) In calculating diluted net loss per share, we excluded the impact of changes in the fair value of the Secured Convertible Notes of $2.6 million and $1.7 million, for the three and six months ended June 30, 2022, respectively. Included in the denominator using the “if-converted” method during the three and six months ended June 30, 2022, are the 2,407,693 shares and 1,577,900 shares, respectively, associated with the original principal amount of the Secured Convertible Notes and the assumed conversion of accrued interest owed at the beginning of the period.

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Significant Accounting Policies (As Restated) (Tables)

6 Months Ended

Jun. 30, 2022

Accounting Policies [Abstract]

Schedule of Estimate Fair Value of Stock Options Granted

The following assumptions were used to estimate the fair value of stock options granted during the six months ended June 30, 2022 and 2021 using the Black-Scholes option pricing model:

	2022	2021
Risk-free interest rate	1.18%-1.83%	0.37%- 0.62%
Expected life (years)	6.25	6.25
Expected volatility	113.0% - 115.0%	92.4%
Dividend rate	0%	0%

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Property and Equipment (Tables)

6 Months Ended

Jun. 30, 2022

Property Plant And Equipment [Abstract]

Schedule of Property and Equipment

Property and equipment consisted of the following at June 30, 2022 and December 31, 2021:

	June 30, 2022			December 31, 2021
Computer hardware and software	$	144,782		$	113,847
Leasehold improvements		52,887			60,535
Furniture and fixtures		106,698			145,487
Subtotal property and equipment, gross		304,367			319,869
Less accumulated depreciation		(202,785	)		(205,757	)
Property and equipment, net	$	101,582		$	114,112

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Accrued Expenses (Tables)

6 Months Ended

Jun. 30, 2022

Accounts Payable And Accrued Liabilities Current [Abstract]

Schedule of Accrued Expenses

Accrued expenses consisted of the following at June 30, 2022 and December 31, 2021:

	June 30, 2022		December 31, 2021
Accrued payroll and payroll taxes	$	2,539,643	$	419,354
Accrued precommercial costs		1,120,435		395,923
Accrued contract manufacturing		935,710		827,390
Accrued accounting, audit, and tax fees		278,950		167,630
Accrued contract research and regulatory consulting		236,356		47,637
Accrued legal		212,291		162,812
Accrued consulting		103,855		105,085
Accrued license fees		78,015		86,259
Accrued miscellaneous expenses		62,709		216,103
Total accrued expenses	$	5,567,964	$	2,428,193

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Leases (Tables)

6 Months Ended

Jun. 30, 2022

Leases [Abstract]

Reconciliation of Undiscounted Lease Liabilities to Total Lease Liabilities

The following table reconciles the undiscounted lease liabilities to the total lease liabilities recognized on the unaudited condensed balance sheet as of June 30, 2022:

Undiscounted lease liabilities for years ending December 31:
2022 (remaining)	$	60,317
2023		103,925
2024		107,290
2025		54,579
Total undiscounted lease liabilities		326,111
Less effects of discounting		(49,556	)
Total lease liabilities as of June 30, 2022	$	276,555

The Company’s lease liabilities are reported on the unaudited condensed balance sheets as follows:

	June 30, 2022		December 31, 2021
Other current liabilities	$	110,421	$	184,340
Other non-current liabilities		166,134		209,497
Total lease liabilities	$	276,555	$	393,837

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Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2022

Fair Value Disclosures [Abstract]

Schedule of Assets and Liabilities Measured at Fair Value

The following table presents the Company’s assets and liabilities that are measured and recognized at fair value on a recurring basis classified under the appropriate level of the fair value hierarchy as of June 30, 2022.

	As of June 30, 2022				Fair Value Measurements As of June 30, 2022
	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
Assets:
Money Market Funds in Cash Equivalents	$	13,969,744	$	13,969,744	$	13,969,744	$	—	$	—
Liabilities:
Debt:
Secured Convertible Notes	$	4,321,200	$	4,321,200	$	—	$	—	$	4,321,200
Bridge Loan	$	4,084,709	$	4,084,709	$	—	$	—	$	4,084,709
	$	8,405,909	$	8,405,909	$	—	$	—	$	8,405,909

Schedule of Change in Fair Value

The significant unobservable inputs used in calculating the fair value of the Secured Convertible Notes and Bridge Loan represent management’s best estimates and involve inherent uncertainties and the application of management’s judgment. Any significant changes in the inputs described herein may result in significantly higher or lower fair value measurements. During the three and six months ended June 30, 2022, the Company recognized a reduction in the fair value of the Bridge Loan of $2.1 million, through non-operating income in the statement of operations. During the three and six months ended June 30, 2022, the Company recognized a reduction in the fair value of the Secured Convertible Notes of $2.7 million and $1.7 million, respectively, through non-operating income in the statement of operations.

	December 31, 2021		Loan Received		Payments		Accretion/ Interest Accrued		Adjustment to Fair Value Mark to Market			June 30, 2022
Secured Convertible Notes	$	—	$	6,000,000	$	—	$	—	$	(1,678,800	)	$	4,321,200
Bridge Loan	$	—	$	6,172,969	$	—	$	—	$	(2,088,260	)	$	4,084,709
	$	—	$	12,172,969	$	—	$	—	$	(3,767,060	)	$	8,405,909

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Stockholders' (Deficit) Equity (Tables)

6 Months Ended

Jun. 30, 2022

Equity [Abstract]

Summary of Option Activity under 2018 Plan, 2013 Plan and 2010 Plan

A summary of option activity under the 2018 Plan, 2013 Plan, and 2010 Plan for the six months ended June 30, 2022, is as follows:

Year-to-Date Activity	Number of Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value (in Millions)
Options outstanding at December 31, 2021		1,954,975		$	8.16		7.8
Granted		958,000		$	2.33
Cancelled/forfeited		(62,188	)	$	4.12
Options outstanding at June 30, 2022		2,850,787		$	6.29		8.0	$	—
Options exercisable at June 30, 2022		1,322,180		$	9.80		6.6	$	—

Summary of Stock-Based Compensation Expense

The fair value of shares vested during the three and six months ending June 30, 2022 was $0.4 million and $1.5 million, respectively. The fair value of shares vested during the three and six months ending June 30, 2021 was $0.3 million and $1.2 million, respectively. The amount of stock-based compensation expense recorded to research and development expenses and to general and administrative expenses is detailed in table below:

	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
Stock-based compensation
Research and development	$	158,880	$	176,534	$	299,320	$	344,580
General and administrative		301,897		418,129		635,554		809,519
Total stock-based compensation expense	$	460,777	$	594,663	$	934,874	$	1,154,099

Summary of Warrants Issued

	Six Months Ended June 30,
	2022				2021
	Number		Weighted Average Exercise Price		Number		Weighted Average Exercise Price
Granted during the period		150,000	$	2.46		—	$	—
Outstanding at end of the period		150,000	$	2.46		—	$	—
Exercisable at end of the period		150,000	$	2.46
Weighted average remaining life	6.8 years					—

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Net Loss Per Share (As Restated) (Tables)

6 Months Ended

Jun. 30, 2022

Earnings Per Share [Abstract]

Schedule of Numerator and Denominator used in Calculation of Basic and Diluted Net Loss Per Common Share

A reconciliation of the numerator and denominator used in the calculation of basic and diluted net loss per common share for the three and six months ended June 30, 2022 is as follows:

	For the Three Months Ended June 30, 2022			For the Six Months Ended June 30, 2022
Numerator:
Net loss	$	(2,667,036	)	$	(11,846,040	)
Denominator:
Basic:
Weighted average shares of common stock outstanding		15,273,707			14,794,637
Diluted:
Weighted average shares of common stock outstanding		15,273,707			14,794,637
Effect of potentially dilutive shares (1)		2,407,693			1,577,900
Total weighted average shares of common stock and potentially dilutive shares		17,681,400			16,372,537
Net loss per common share:
Basic:
Net loss applicable to common stockholders	$	(2,667,036	)	$	(11,846,040	)
Weighted average shares of stock outstanding, basic		15,273,707			14,794,637
Basic net loss per common share	$	(0.17	)	$	(0.80	)
Diluted:
Net loss applicable to common shareholders, diluted (1)	$	(5,308,236	)	$	(13,524,840	)
Weighted average shares of stock outstanding, diluted		17,681,400			16,372,537
Diluted net loss per common share	$	(0.30	)	$	(0.83	)

Schedule of Reconciliation of Number of Shares of Common Stock Underlying Potentially Dilutive Securities

As of June 30, 2022 and 2021, the number of shares of common stock underlying potentially dilutive securities excluded from the calculation of diluted net loss per share, because our net loss meant that their inclusion would have been anti-dilutive for those periods, consists of:

	June 30,
	2022		2021
Options to purchase common stock		2,850,787		1,751,475
SWK Warrant		150,000		—
Total		3,000,787		1,751,475

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Nature of Operations and Basis of Presentation - Additional Information (Details) - USD ($)										3 Months Ended		6 Months Ended
	Mar. 14, 2022	Mar. 04, 2022	Jan. 14, 2022	Oct. 12, 2021	Mar. 19, 2021	Jan. 25, 2021	Apr. 30, 2020	Mar. 18, 2020	Nov. 09, 2018	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2022	Dec. 31, 2021	Oct. 04, 2021
Organization Consolidation and Presentation of Financial Statement [Line Items]
Accumulated deficit										$ 126,355,994		$ 126,355,994			$ 114,509,954
Cash and cash equivalents										$ 14,469,744		14,469,744			12,710,762
Net cash used in operating activities												(12,866,087)	$ 9,242,939
Issuance of common stock, net of issuance costs, shares										300,000
Proceeds from issuance of common stock, net of issuance costs										$ 400,000		3,524,198	$ 3,139,047
Reimbursement payment					$ 14,000,000.0
Development payments					10,000,000.0
Current liabilities										17,473,264		17,473,264			$ 29,109,950
Deferred collaboration funding										6,300,000		6,300,000
Event of Positive Safety
Organization Consolidation and Presentation of Financial Statement [Line Items]
Cash and cash equivalents										2,000,000.0		2,000,000.0
Lincoln Park
Organization Consolidation and Presentation of Financial Statement [Line Items]
Remained available under facility										$ 11,800,000		$ 11,800,000
Issuance of common stock, net of issuance costs, shares										300,000	0	300,000	200,000
Issuance of common stock, price per share										$ 1.25		$ 1.25
Proceeds from issuance of common stock, net of issuance costs												$ 400,000	$ 500,000
Proceeds from issuance of common stock gross										$ 400,000		400,000
Remaining obligation										11,800,000		11,800,000
Number of shares, company may sell on any single business day							50,000
Maximum amount of Common stock at time of sale, per regular purchase							$ 1,000,000.0
Stock to be issued value on certain limitation and condition							11,800,000
Proposed Collaboration and License Agreement
Organization Consolidation and Presentation of Financial Statement [Line Items]
Upfront non-refundable payment received					1,000,000.0
Proposed Collaboration and License Agreement | Relief Therapeutics Holding AG
Organization Consolidation and Presentation of Financial Statement [Line Items]
Upfront non-refundable payment received						$ 1,000,000.0
Proposed Collaboration and License Agreement | Secured Loan | Relief Therapeutics Holding AG
Organization Consolidation and Presentation of Financial Statement [Line Items]
Debt instrument, term						12 months
Debt instrument, principal amount						$ 4,000,000.0
Debt instrument, interest rate						6.00%
Collaboration Agreement | Second Development Payment
Organization Consolidation and Presentation of Financial Statement [Line Items]
Deferred collaboration funding										14,200,000		14,200,000
Collaboration Agreement | Relief Therapeutics Holding AG
Organization Consolidation and Presentation of Financial Statement [Line Items]
Upfront non-refundable payment received						$ 1,000,000.0
Cash payment received					10,000,000.0						$ 10,000,000.0
Repayment of outstanding balance of prior loan and interest					4,000,000.0	4,000,000.0
Reimbursement payment					$ 14,000,000.0	$ 14,000,000.0
Potential proceeds from development payments subject to new drug application																$ 10,000,000.0
Proceeds from first tranche of development payments subject to new drug application				$ 5,000,000.0
Net profit split ratio based on territory					60.00%	60.00%
Net profit split ratio						60%:40%
Percentage of royalty net sales received					15.00%	15.00%
Milestone payment to be received					$ 6,000,000.0	$ 6,000,000.0
Collaboration Agreement | Relief Therapeutics Holding AG | First Development Payment
Organization Consolidation and Presentation of Financial Statement [Line Items]
Development payments subject new drug application											$ 10,000,000.0		$ 10,000,000.0
Collaboration Agreement | Relief Therapeutics Holding AG | Second Development Payment
Organization Consolidation and Presentation of Financial Statement [Line Items]
Potential proceeds from development payments subject to new drug application																$ 10,000,000.0
Proceeds from first tranche of development payments subject to new drug application				5,000,000.0
Collaboration Agreement | Secured Loan | Relief Therapeutics Holding AG
Organization Consolidation and Presentation of Financial Statement [Line Items]
Debt instrument, term						12 months
Debt instrument, principal amount						$ 4,000,000.0
Debt instrument, interest rate						6.00%
Waiver and Agreement | Relief Therapeutics Holding AG
Organization Consolidation and Presentation of Financial Statement [Line Items]
Proceeds from second tranche of development payments subject to new drug application				5,000,000.0
Waiver and Agreement | Relief Therapeutics Holding AG | Second Development Payment
Organization Consolidation and Presentation of Financial Statement [Line Items]
Proceeds from first tranche of development payments subject to new drug application			$ 5,000,000.0	5,000,000.0
Proceeds from second tranche of development payments subject to new drug application				$ 5,000,000.0
SWK Credit Agreement | Bridge Loan | Lenders Party and SWK Funding LLC
Organization Consolidation and Presentation of Financial Statement [Line Items]
Debt instrument, principal amount		$ 6,500,000
Debt instrument, interest rate, increase		3.00%
Minimum cash balance required by the loan covenants										4,000,000.0		4,000,000.0
Origination fees	$ 100,000
Warrant issued to purchase common stock		150,000
Warrant, exercise price		$ 2.46
SWK Credit Agreement | Bridge Loan | Lenders Party and SWK Funding LLC | Event of Positive Safety
Organization Consolidation and Presentation of Financial Statement [Line Items]
Cash and cash equivalents										$ 2,000,000.0		$ 2,000,000.0
SWK Credit Agreement | Bridge Loan | Lenders Party and SWK Funding LLC | If ACER-001 Approval does not Occur on or Before September 30, 2022
Organization Consolidation and Presentation of Financial Statement [Line Items]
Debt instrument, maturity date		Mar. 04, 2024
Debt instrument repayment percentage on outstanding principal amount		150.00%
SWK Credit Agreement | Bridge Loan | Lenders Party and SWK Funding LLC | If ACER-001 Approval Occur on or Before September 30, 2022
Organization Consolidation and Presentation of Financial Statement [Line Items]
Debt instrument repayment percentage on outstanding principal amount		130.00%
SWK Credit Agreement | Bridge Loan | Lenders Party and SWK Funding LLC | Remainder of the Time Till Bridge Loan is Outstanding
Organization Consolidation and Presentation of Financial Statement [Line Items]
Minimum cash balance required by the loan covenants														$ 6,500,000
SWK Credit Agreement | Bridge Loan | Lenders Party and SWK Funding LLC | LIBOR
Organization Consolidation and Presentation of Financial Statement [Line Items]
Debt instrument, interest rate		1.00%
Debt instrument, description of variable rate basis												3-month LIBOR
Debt instrument, periodic payment, principal		$ 700,000
Debt instrument, frequency of periodic payment												quarterly
Debt instrument, basis spread on variable rate		11.00%
Loan repayment commencing date		Nov. 15, 2022
Secured Convertible Note Purchase Agreement | Secured Convertible Notes | MAM Aardvark, LLC and Marathon Healthcare Finance Fund, L.P.
Organization Consolidation and Presentation of Financial Statement [Line Items]
Debt instrument, principal amount		$ 6,000,000.0
Debt instrument, interest rate		6.50%
Debt instrument, frequency of periodic payment												quarterly
Debt instrument, interest rate, increase		11.50%
Conversion price		$ 2.50
Marathon Credit Agreement | Term Loan | Lender Party and Marathon
Organization Consolidation and Presentation of Financial Statement [Line Items]
Debt instrument, principal amount		$ 42,500,000
Debt instrument, interest rate		13.50%
Debt instrument, frequency of periodic payment												quarterly
Debt instrument, maturity date		Dec. 31, 2028
Percentage of commitment fee		1.50%
Line of credit facility, maximum borrowing capacity		$ 92,500,000
Line of credit facility, additional borrowing capacity		$ 50,000,000.0
Percentage of option to capitalize	4.00%
Debt instrument amortization percentage		2.78%
Debt instrument, maturity date, description												The final maturity date of the Term Loan would be the earlier of six years after the Term Loan Funding Date or December 31, 2028.
Percentage of prepayment, prior to March 4, 2025		5.00%
Percentage of prepayment, on or after March 4, 2025, but prior to March 4, 2026		3.00%
Percentage of prepayment, on or after March 4, 2026, but prior to March 4, 2027		2.00%
Percentage of prepayment, on or after March 4, 2027		1.00%
Payment for commitment fees		$ 200,000
Payment for additional commitment fees		$ 600,000
Percentage of aggregate revenue as royalty payments		2.00%
Royalty payments on aggregate revenue cap amount		$ 15,000,000.0
Weighted Average | Lincoln Park
Organization Consolidation and Presentation of Financial Statement [Line Items]
Issuance of common stock, price per share										$ 1.25	$ 2.47	$ 1.25	$ 2.47
Minimum [Member] | SWK Credit Agreement | Bridge Loan | Lenders Party and SWK Funding LLC
Organization Consolidation and Presentation of Financial Statement [Line Items]
Number of days required for cash balance												20 days
Minimum [Member] | SWK Credit Agreement | Bridge Loan | Lenders Party and SWK Funding LLC | Remainder of the Time Till Bridge Loan is Outstanding
Organization Consolidation and Presentation of Financial Statement [Line Items]
Number of days required for cash balance												40 days
Maximum | Lincoln Park
Organization Consolidation and Presentation of Financial Statement [Line Items]
Shares value might be issued under agreement							$ 15,000,000.0
Number of shares, company may sell on any single business day							100,000
Maximum | Collaboration Agreement | Relief Therapeutics Holding AG
Organization Consolidation and Presentation of Financial Statement [Line Items]
Development payments					$ 20,000,000.0
At-the-Market Facility
Organization Consolidation and Presentation of Financial Statement [Line Items]
Remained available under facility										$ 36,700,000		$ 36,700,000
Common stock offering costs										$ 200,000		$ 200,000	$ 200,000
Issuance of common stock, net of issuance costs, shares										1,062,547		1,062,547	877,107
Proceeds from issuance of common stock, net of issuance costs										$ 3,100,000		$ 3,100,000	$ 2,600,000
Proceeds from issuance of common stock gross										$ 3,300,000		$ 3,300,000	$ 2,800,000
At-the-Market Facility | Weighted Average
Organization Consolidation and Presentation of Financial Statement [Line Items]
Issuance of common stock, price per share										$ 3.0719	$ 3.1692	$ 3.0719	$ 3.1692
At-the-Market Facility | Maximum
Organization Consolidation and Presentation of Financial Statement [Line Items]
Aggregate offering price of common stock								$ 50,000,000.0	$ 50,000,000.0

XML

Nature of Operations and Basis of Presentation - Effects of Error Correction on Unaudited Condensed Interim Statement of Operations (Details) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Accounting Changes And Error Corrections [Abstract]
Net loss per share - basic (as restated)	$ (0.17)	$ (0.21)	$ (0.80)	$ (0.54)
Weighted average common shares outstanding - basic (as restated)	15,273,707	14,310,244	14,794,637	14,225,551
Net loss per share - diluted (as restated)	$ (0.30)	$ (0.21)	$ (0.83)	$ (0.54)
Weighted average common shares outstanding - diluted (as restated)	17,681,400	14,310,244	16,372,537	14,225,551

XML

Nature of Operations and Basis of Presentation - Effects of Error Correction on Unaudited Condensed Interim Statement of Operations (Parenthetical) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Organization Consolidation and Presentation of Financial Statement [Line Items]
Adjustment to Fair Value Mark to Market			$ (3,767,060)
Securities excluded from computation of net loss per share	3,000,787	1,751,475	3,000,787	1,751,475
Senior Convertible Notes
Organization Consolidation and Presentation of Financial Statement [Line Items]
Adjustment to Fair Value Mark to Market	$ 2,600,000		$ 1,700,000
Securities excluded from computation of net loss per share	2,407,693		1,577,900

XML

Significant Accounting Policies (As Restated) - Additional Information (Details) - USD ($)					3 Months Ended		6 Months Ended		12 Months Ended
	Jan. 14, 2022	Oct. 12, 2021	Mar. 19, 2021	Jan. 25, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021	Oct. 04, 2021
Schedule Of Significant Accounting Policies [Line Items]
Upfront nonrefundable payment				$ 1,000,000.0
Loan in principal amount				$ 4,000,000.0
Issuance and bore interest rate				6.00%
Reimbursement payment			$ 14,000,000.0
Collaboration agreement amount			25,000,000.0
Development payments			10,000,000.0
Deferred collaboration funding					$ 6,300,000		$ 6,300,000
Deferred collaboration funding, current					6,340,438		6,340,438		$ 15,825,938
Cash in excess of FDIC insured limit					14,200,000		14,200,000		12,500,000
Cash and cash equivalents					14,469,744		14,469,744		12,710,762
Preclinical or clinical study expense included in accounts payable and accrued expenses.					300,000		300,000		200,000
Income tax expense (benefit)					0	$ 0	0	$ 0
Uncertain tax positions, accruals					0	0	0	0
Accruals for interest or penalties related to income tax matters					$ 0	0	$ 0	0
ASU No. 2020-06
Schedule Of Significant Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, adopted					true		true
Change in accounting principle, accounting standards update, adoption date					Mar. 31, 2021		Mar. 31, 2021
ASU No. 2021-10
Schedule Of Significant Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, adopted					true		true
Change in accounting principle, accounting standards update, adoption date					Dec. 31, 2021		Dec. 31, 2021
Change in accounting principle, accounting standards update, immaterial effect					true		true
ASU No. 2021-04
Schedule Of Significant Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, adopted					true		true
Change in accounting principle, accounting standards update, adoption date					Mar. 31, 2022		Mar. 31, 2022
Change in accounting principle, accounting standards update, immaterial effect					true		true
Event of Positive Safety
Schedule Of Significant Accounting Policies [Line Items]
Cash and cash equivalents					$ 2,000,000.0		$ 2,000,000.0
Maximum
Schedule Of Significant Accounting Policies [Line Items]
Cash, FDIC insured amount					250,000		250,000
Bridge Loan
Schedule Of Significant Accounting Policies [Line Items]
Minimum cash balance required by the loan covenants					4,000,000.0		4,000,000.0
Bridge Loan | Remainder of the Time Till Bridge Loan is Outstanding
Schedule Of Significant Accounting Policies [Line Items]
Minimum cash balance required by the loan covenants					6,500,000		$ 6,500,000
Bridge Loan | Minimum [Member]
Schedule Of Significant Accounting Policies [Line Items]
Number of days required for cash balance							20 days
Bridge Loan | Minimum [Member] | Remainder of the Time Till Bridge Loan is Outstanding
Schedule Of Significant Accounting Policies [Line Items]
Number of days required for cash balance							40 days
Relief
Schedule Of Significant Accounting Policies [Line Items]
Non-cash reduction recognized in secured loan								$ 4,000,000.0
Collaboration Agreement | Second Development Payment
Schedule Of Significant Accounting Policies [Line Items]
Deferred collaboration funding					14,200,000		$ 14,200,000
Deferred collaboration funding, current					6,300,000		6,300,000
Noncurrent liability					7,900,000		7,900,000
Deferred collaboration funding, cash received					$ 35,000,000.0		35,000,000.0
Revenue recognized									$ 1,300,000
Offset to research and development expenses							10,700,000
Offset to general and administrative expenses							$ 8,800,000
Collaboration Agreement | Relief
Schedule Of Significant Accounting Policies [Line Items]
Cash payment received			10,000,000.0			$ 10,000,000.0
Reimbursement payment			14,000,000.0	$ 14,000,000.0
Repayment of outstanding balance of prior loan and interest			4,000,000.0	$ 4,000,000.0
Development and commercial launch costs			$ 20,000,000.0
Net profit split ratio based on territory			60.00%	60.00%
Percentage of royalty net sales received			15.00%	15.00%
Milestone payment to be received			$ 6,000,000.0	$ 6,000,000.0
Potential proceeds from development payments subject to new drug application										$ 10,000,000.0
Proceeds from first tranche of development payments subject to new drug application		$ 5,000,000.0
Percentage of development and commercialization services			60.00%
Percentage of payment net profit territory			60.00%
Upfront non-refundable payment received				1,000,000.0
Collaboration Agreement | Relief | Maximum
Schedule Of Significant Accounting Policies [Line Items]
Development and commercial launch costs				20,000,000.0
Development payments			$ 20,000,000.0
Collaboration Agreement | Relief | Second Development Payment
Schedule Of Significant Accounting Policies [Line Items]
Potential proceeds from development payments subject to new drug application										$ 10,000,000.0
Proceeds from first tranche of development payments subject to new drug application		5,000,000.0
Waiver and Agreement | Relief | Second Development Payment
Schedule Of Significant Accounting Policies [Line Items]
Proceeds from first tranche of development payments subject to new drug application	$ 5,000,000.0	$ 5,000,000.0
Proposed Collaboration and License Agreement
Schedule Of Significant Accounting Policies [Line Items]
Upfront non-refundable payment received			$ 1,000,000.0
Proposed Collaboration and License Agreement | Relief
Schedule Of Significant Accounting Policies [Line Items]
Upfront non-refundable payment received				$ 1,000,000.0

XML

Significant Accounting Policies (As Restated) - Schedule of Estimate Fair Value of Stock Options Granted (Details)	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Schedule Of Significant Accounting Policies [Line Items]
Risk-free interest rate, minimum	1.18%	0.37%
Risk-free interest rate, maximum	1.83%	0.62%
Expected life (years)	6 years 3 months	6 years 3 months
Expected volatility		92.40%
Dividend rate	0.00%	0.00%
Minimum [Member]
Schedule Of Significant Accounting Policies [Line Items]
Expected volatility	113.00%
Maximum
Schedule Of Significant Accounting Policies [Line Items]
Expected volatility	115.00%

XML

Property and Equipment - Schedule of Property and Equipment (Details) - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Property Plant And Equipment [Line Items]
Subtotal property and equipment, gross	$ 304,367	$ 319,869
Less accumulated depreciation	(202,785)	(205,757)
Property and equipment, net	101,582	114,112
Computer Hardware and Software
Property Plant And Equipment [Line Items]
Subtotal property and equipment, gross	144,782	113,847
Leasehold Improvements
Property Plant And Equipment [Line Items]
Subtotal property and equipment, gross	52,887	60,535
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Subtotal property and equipment, gross	$ 106,698	$ 145,487

XML

Accrued Expenses - Schedule of Accrued Expenses (Details) - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Accounts Payable And Accrued Liabilities Current [Abstract]
Accrued payroll and payroll taxes	$ 2,539,643	$ 419,354
Accrued precommercial costs	1,120,435	395,923
Accrued contract manufacturing	935,710	827,390
Accrued accounting, audit, and tax fees	278,950	167,630
Accrued contract research and regulatory consulting	236,356	47,637
Accrued legal	212,291	162,812
Accrued consulting	103,855	105,085
Accrued license fees	78,015	86,259
Accrued miscellaneous expenses	62,709	216,103
Total accrued expenses	$ 5,567,964	$ 2,428,193

XML

Leases - Additional Information (Details)			1 Months Ended	3 Months Ended		6 Months Ended
	Nov. 17, 2021	Oct. 15, 2021	Jun. 30, 2022 USD ($) ft²	Jun. 30, 2022 USD ($) ft²	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) ft²	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)	Apr. 23, 2019 ft²	Mar. 05, 2019 ft²	Apr. 01, 2018 ft²	Mar. 06, 2018 ft²
Lessee Lease Description [Line Items]
Operating lease right of use asset | $			$ 300,000	$ 300,000		$ 300,000		$ 400,000
Operating lease liability | $			$ 276,555	$ 276,555		$ 276,555		$ 393,837
Operating lease discount rate			8.00%	8.00%		8.00%		10.00%
Operating lease, weighted average remaining lease term			2 years 8 months 12 days	2 years 8 months 12 days		2 years 8 months 12 days
Operating lease, cash payment made | $				$ 100,000	$ 100,000	$ 100,000	$ 100,000
Operating lease expense | $				$ 100,000	$ 100,000	$ 100,000	$ 100,000
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]			Other non-current assets	Other non-current assets		Other non-current assets
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]			us-gaap:OtherLiabilities	us-gaap:OtherLiabilities		us-gaap:OtherLiabilities
Newton Lease
Lessee Lease Description [Line Items]
Lease expiration date						May 31, 2022
Newton Lease | Newton, Massachusetts
Lessee Lease Description [Line Items]
Lease agreement date						Mar. 06, 2018
Lease commencement date						Oct. 01, 2018
Square feet of office space leased												2,760
Additional Newton Lease
Lessee Lease Description [Line Items]
Lease expiration date		Dec. 31, 2022
Additional Newton Lease | Newton, Massachusetts
Lessee Lease Description [Line Items]
Lease agreement date						Mar. 05, 2019
Lease commencement date						Jun. 01, 2019
Square feet of office space leased										1,600
Amendment of Newton Lease
Lessee Lease Description [Line Items]
Reduced area of land			1,600	1,600		1,600
Amendment of Newton Lease | Newton, Massachusetts
Lessee Lease Description [Line Items]
Lease agreement date						Oct. 15, 2021
Bend Lease | Oregon
Lessee Lease Description [Line Items]
Lease agreement date						Apr. 01, 2018
Square feet of office space leased											2,288
Additional Bend Lease | Oregon
Lessee Lease Description [Line Items]
Lease agreement date						Apr. 23, 2019
Lease commencement date						May 01, 2019
Square feet of office space leased									1,389
Modified Bend Lease
Lessee Lease Description [Line Items]
Lease agreement date						Nov. 17, 2021
Lease expiration date	Jun. 30, 2022		Jun. 30, 2025
Lease, existence of option to extend						true
Lease, option to extend						On November 17, 2021, the Company entered into a lease agreement to extend the term of the Bend Lease and the Additional Bend Lease to June 30, 2022 and to further extend the term either (1) until June 30, 2027 if FDA approval of ACER-001 was received in June 2022, or (2) until June 30, 2025 if FDA approval of ACER-001 was not received in June 2022

XML

Leases - Reconciliation of Undiscounted Lease Liabilities to Total Lease Liabilities (Details) - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Undiscounted lease liabilities for years ending December 31:
2022 (remaining)	$ 60,317
2023	103,925
2024	107,290
2025	54,579
Total undiscounted lease liabilities	326,111
Less effects of discounting	(49,556)
Total lease liabilities as of June 30, 2022	276,555	$ 393,837
Other current liabilities	$ 110,421	$ 184,340
Operating Lease Liability Current Statement Of Financial Position Extensible List	Other current liabilities	Other current liabilities
Other non-current liabilities	$ 166,134	$ 209,497
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other non-current liabilities	Other non-current liabilities
Total lease liabilities	$ 276,555	$ 393,837

XML

Debt - Additional Information (Details) - USD ($)			3 Months Ended		6 Months Ended
	Mar. 14, 2022	Mar. 04, 2022	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Cash and cash equivalents			$ 14,469,744		$ 14,469,744	$ 12,710,762
Proceeds allocated to SWK Warrant				$ 327,031
Debt issuance costs incurred					1,200,000
SWK Warrant
Debt Instrument [Line Items]
Fair value of warrant			300,000		300,000
Bridge Loan
Debt Instrument [Line Items]
Fair value of loan			6,200,000		6,200,000
Event of Positive Safety
Debt Instrument [Line Items]
Cash and cash equivalents			2,000,000.0		2,000,000.0
Financial Advisor
Debt Instrument [Line Items]
Debt issuance costs incurred					700,000
SWK and Holders
Debt Instrument [Line Items]
Debt issuance costs incurred					500,000
Bridge Loan | Non-Operating Income
Debt Instrument [Line Items]
Reduction in the fair value of debt			(2,100,000)		(2,100,000)
Secured Convertible Notes | Non-Operating Income
Debt Instrument [Line Items]
Reduction in the fair value of debt			(2,700,000)		(1,700,000)
Term Loan | Financial Advisor
Debt Instrument [Line Items]
Payment for funding fee for services					700,000
Bridge Loan and Convertible Note Financing | Financial Advisor
Debt Instrument [Line Items]
Payment for funding fee for services					500,000
SWK Credit Agreement | Lenders Party and SWK | Event of Positive Safety
Debt Instrument [Line Items]
Cash and cash equivalents			$ 2,000,000.0		2,000,000.0
SWK Credit Agreement | Bridge Loan
Debt Instrument [Line Items]
Principal amortization payments					$ 1,900,000
SWK Credit Agreement | Bridge Loan | Lenders Party and SWK
Debt Instrument [Line Items]
Debt instrument, principal amount		$ 6,500,000
Debt instrument, interest rate			12.00%		12.00%
Debt instrument, interest rate, increase		3.00%
Debt instrument, maturity date, description					The final maturity date of the Bridge Loan is (a) if full approval by FDA for marketing of the Company’s product known as ACER-001 (sodium phenylbutyrate) (“ACER-001 Approval”) occurs on or before September 30, 2022, then the date which is 12 business days after ACER-001 Approval, or (b) if ACER-001 Approval does not occur on or before September 30, 2022, then March 4, 2024.
Minimum cash balance required by the loan covenants			$ 4,000,000.0		$ 4,000,000.0
Origination fees	$ 100,000
SWK Credit Agreement | Bridge Loan | Lenders Party and SWK | SWK Warrant
Debt Instrument [Line Items]
Warrant issued to purchase common stock		150,000
Warrant, exercise price		$ 2.46
Proceeds allocated to SWK Warrant		$ 300,000
SWK Credit Agreement | Bridge Loan | Lenders Party and SWK | Minimum [Member]
Debt Instrument [Line Items]
Number of days required for cash balance					20 days
SWK Credit Agreement | Bridge Loan | Lenders Party and SWK | If ACER-001 Approval does not Occur on or Before September 30, 2022
Debt Instrument [Line Items]
Debt instrument, maturity date		Mar. 04, 2024
Debt instrument repayment percentage on outstanding principal plus any and all paid-in-kind interest amount		150.00%
SWK Credit Agreement | Bridge Loan | Lenders Party and SWK | If ACER-001 Approval Occur on or Before September 30, 2022
Debt Instrument [Line Items]
Debt instrument repayment percentage on outstanding principal plus any and all paid-in-kind interest amount		130.00%
SWK Credit Agreement | Bridge Loan | Lenders Party and SWK | Remainder of the Time Till Bridge Loan is Outstanding
Debt Instrument [Line Items]
Minimum cash balance required by the loan covenants			$ 6,500,000		$ 6,500,000
SWK Credit Agreement | Bridge Loan | Lenders Party and SWK | LIBOR
Debt Instrument [Line Items]
Debt instrument, description of variable rate basis					3-month LIBOR
Debt instrument, interest rate		1.00%
Debt instrument, basis spread on variable rate		11.00%
Debt instrument, periodic payment, principal		$ 700,000
Debt instrument, frequency of periodic payment					quarterly
Loan repayment commencing date		Nov. 15, 2022
Secured Convertible Note Purchase Agreement | Secured Convertible Notes | MAM Aardvark, LLC and Marathon Healthcare Finance Fund, L.P.
Debt Instrument [Line Items]
Debt instrument, principal amount		$ 6,000,000.0
Debt instrument, interest rate		6.50%
Debt instrument, interest rate, increase		11.50%
Debt instrument, frequency of periodic payment					quarterly
Conversion price		$ 2.50
Marathon Credit Agreement | Term Loan | Lender Party and Marathon
Debt Instrument [Line Items]
Debt instrument, principal amount		$ 42,500,000
Debt instrument, interest rate		13.50%
Debt instrument, frequency of periodic payment					quarterly
Debt instrument, maturity date, description					The final maturity date of the Term Loan would be the earlier of six years after the Term Loan Funding Date or December 31, 2028.
Debt instrument, maturity date		Dec. 31, 2028
Commitment fee percentage on term loan amount		1.50%
Line of credit facility, maximum borrowing capacity		$ 92,500,000
Line of credit facility, additional borrowing capacity		$ 50,000,000.0
Percentage of option to capitalize	4.00%
Debt instrument amortization percentage		2.78%
Percentage of prepayment, prior to March 4, 2025		5.00%
Percentage of prepayment, on or after March 4, 2025, but prior to March 4, 2026		3.00%
Percentage of prepayment, on or after March 4, 2026, but prior to March 4, 2027		2.00%
Percentage of prepayment, on or after March 4, 2027		1.00%
Payment for commitment fees		$ 200,000
Payment for additional commitment fees		$ 600,000
Percentage of aggregate revenue as royalty payments		2.00%
Royalty payments on aggregate revenue cap amount		$ 15,000,000.0

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Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value (Details) - Recurring	Jun. 30, 2022 USD ($)
Carrying Amount
Debt:
Liabilities, fair value	$ 8,405,909
Carrying Amount | Money Market Funds in Cash Equivalents
Assets:
Assets, fair value	13,969,744
Fair Value
Debt:
Liabilities, fair value	8,405,909
Fair Value | Money Market Funds in Cash Equivalents
Assets:
Assets, fair value	13,969,744
Level 1 | Money Market Funds in Cash Equivalents
Assets:
Assets, fair value	13,969,744
Level 3
Debt:
Liabilities, fair value	8,405,909
Secured Convertible Notes | Carrying Amount
Debt:
Liabilities, fair value	4,321,200
Secured Convertible Notes | Fair Value
Debt:
Liabilities, fair value	4,321,200
Secured Convertible Notes | Level 3
Debt:
Liabilities, fair value	4,321,200
Bridge Loan | Carrying Amount
Debt:
Liabilities, fair value	4,084,709
Bridge Loan | Fair Value
Debt:
Liabilities, fair value	4,084,709
Bridge Loan | Level 3
Debt:
Liabilities, fair value	$ 4,084,709

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Fair Value Measurements - Additional Information (Details) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2022
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Changes in fair value		$ (3,767,060)
Bridge Loan
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Changes in fair value	$ (2,100,000)	(2,088,260)
Secured Convertible Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Changes in fair value	$ (2,700,000)	$ (1,678,800)

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Fair Value Measurements - Schedule of Change in Fair Value (Details) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2022
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loan Received		$ 12,172,969
Adjustment to Fair Value Mark to Market		(3,767,060)
Ending Balance	$ 8,405,909	8,405,909
Secured Convertible Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loan Received		6,000,000
Adjustment to Fair Value Mark to Market	(2,700,000)	(1,678,800)
Ending Balance	4,321,200	4,321,200
Bridge Loan
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loan Received		6,172,969
Adjustment to Fair Value Mark to Market	(2,100,000)	(2,088,260)
Ending Balance	$ 4,084,709	$ 4,084,709

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Commitments and Contingencies - Additional Information (Details)								1 Months Ended		3 Months Ended	6 Months Ended
	Jan. 14, 2022 USD ($)	Oct. 12, 2021 USD ($)	Mar. 19, 2021 USD ($)	Jan. 25, 2021 USD ($)	Jan. 21, 2021 USD ($)	Jun. 05, 2020	Apr. 11, 2020 USD ($)	Sep. 30, 2018 Patent	Aug. 31, 2016	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)	Oct. 04, 2021 USD ($)
Commitments And Contingencies [Line Items]
Reimbursement payment			$ 14,000,000.0
Minimum percentage of loan proceeds used to cover payroll costs eligible for loan forgiven						60.00%	75.00%
Other current liabilities											$ 185,265		$ 9,450,085
Other current assets											65,061		$ 9,283,625
Pending Litigation | The Securities Class Action
Commitments And Contingencies [Line Items]
Proposed settlement as a loss in accrued expenses											8,400,000
Other current liabilities											100,000
Other current assets											$ 100,000
Pending Litigation | Stockholders Derivative Action
Commitments And Contingencies [Line Items]
Payment of settlement plus legal fees and costs in excess of retention (deductible) amount					$ 500,000
PPP Loan
Commitments And Contingencies [Line Items]
Debt instrument, description											On June 5, 2020, the Payroll Protection Flexibility Act of 2020 was signed into law, adjusting certain terms of the loans issued under the PPP, including extending the initial deferral period from six to up to ten months, reducing from 75% to 60% the portion of loan proceeds required to be used to cover payroll costs, and allowing borrowers to elect a 24-week rather than an eight-week period related to employment and compensation provisions.
PPP Loan | JPMorgan Chase Bank, N.A
Commitments And Contingencies [Line Items]
CARES act of 2020 aid loan amount							$ 600,000
Promissory Note | JPMorgan Chase Bank, N.A
Commitments And Contingencies [Line Items]
Debt instrument, term							2 years
Debt instrument, interest rate							1.00%
Assistance Publique - Hopitaux de Paris ("AP-HP") | License Agreement
Commitments And Contingencies [Line Items]
Agreement entered date								2018-09
Number of patent applications | Patent								3
Assistance Publique - Hopitaux de Paris ("AP-HP") | Private Acer | License Agreement
Commitments And Contingencies [Line Items]
Agreement entered date									2016-08
Relief Therapeutics Holding AG | Collaboration Agreement
Commitments And Contingencies [Line Items]
Upfront non-refundable payment received				$ 1,000,000.0
Cash payment received				10,000,000.0
Reimbursement payment			14,000,000.0	14,000,000.0
Repayment of outstanding balance of prior loan and interest			4,000,000.0	4,000,000.0
Development and commercial launch costs			$ 20,000,000.0
Potential proceeds from development payments subject to new drug application														$ 10,000,000.0
Guarantee for substantive review food and drug application				$ 0
Net profit split ratio based on territory			60.00%	60.00%
Percentage of royalty revenue received				15.00%
Milestone payment to be received			$ 6,000,000.0	$ 6,000,000.0
Proceeds from first tranche of development payments subject to new drug application		$ 5,000,000.0
Relief Therapeutics Holding AG | Collaboration Agreement | First Development Payment
Commitments And Contingencies [Line Items]
Development payments subject new drug application										$ 10,000,000.0		$ 10,000,000.0
Relief Therapeutics Holding AG | Collaboration Agreement | Second Development Payment
Commitments And Contingencies [Line Items]
Potential proceeds from development payments subject to new drug application														$ 10,000,000.0
Proceeds from first tranche of development payments subject to new drug application		5,000,000.0
Relief Therapeutics Holding AG | Collaboration Agreement | Maximum
Commitments And Contingencies [Line Items]
Development and commercial launch costs				$ 20,000,000.0
Relief Therapeutics Holding AG | Collaboration Agreement | Secured Loan
Commitments And Contingencies [Line Items]
Debt instrument, term				12 months
Debt instrument, principal amount				$ 4,000,000.0
Debt instrument, interest rate				6.00%
Relief Therapeutics Holding AG | Waiver and Agreement
Commitments And Contingencies [Line Items]
Proceeds from second tranche of development payments subject to new drug application		5,000,000.0
Relief Therapeutics Holding AG | Waiver and Agreement | Second Development Payment
Commitments And Contingencies [Line Items]
Proceeds from second tranche of development payments subject to new drug application		5,000,000.0
Proceeds from first tranche of development payments subject to new drug application	$ 5,000,000.0	$ 5,000,000.0

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Stockholders' (Deficit) Equity - Additional Information (Details) - USD ($)							3 Months Ended		6 Months Ended		12 Months Ended
	Apr. 30, 2020	Mar. 18, 2020	Sep. 18, 2019	Nov. 09, 2018	May 14, 2018	Sep. 19, 2017	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021	Feb. 18, 2022	Jan. 01, 2022	Jan. 01, 2021
Stockholders Equity [Line Items]
Issuance of common stock, net of issuance costs, shares							300,000
Proceeds from issuance of common stock, net of issuance costs							$ 400,000		$ 3,524,198	$ 3,139,047
Number of share outstanding							2,850,787		2,850,787		1,954,975
Awards granted under the plan									958,000
Unrecognized compensation expense							$ 3,300,000		$ 3,300,000
Share based compensation arrangement by share based payment award, Weighted average period									3 years
Weighted average grant date fair value of options granted							$ 1.97	$ 2.18	$ 1.99	$ 2.83
Fair value of options vested							$ 400,000	$ 300,000	$ 1,500,000	$ 1,200,000
2018 Stock Incentive Plan
Stockholders Equity [Line Items]
Number of common stock authorized for issuance					500,000								572,410	529,325
Share-based compensation arrangement by share-based payment award, description									In addition, the number of shares authorized for issuance under the 2018 Plan is automatically increased (the “evergreen provision”) on the first day of each fiscal year beginning on January 1, 2019, and ending on (and including) January 1, 2028, in an amount equal to the lesser of (i) 4% of the outstanding shares of common stock on the last day of the immediately preceding fiscal year, or (ii) another amount (including zero) determined by the Company’s Board of Directors. On January 1, 2022 and 2021, 572,410 and 529,325 additional shares, respectively, were authorized according to the evergreen provision. On February18, 2022, the Company’s Board of Directors amended and restated the 2018 Plan to add a provision permitting the grant of inducement awards under Nasdaq Marketplace Rule 5635(c)(4) to eligible recipients and initially reserved 200,000 shares of the Company’s common stock for issuance pursuant to inducement awards granted under the 2018 Plan. Any shares subject to awards granted under the 2018 Plan that are forfeited or terminated before being exercised or settled or are not delivered to the participant because such award is settled in cash, will again become available for issuance under the 2018 Plan. Shares withheld to satisfy the grant, exercise price or tax withholding obligation related to an award will again become available for issuance under the 2018 Plan.
Share-based compensation arrangement by share-based payment award, expiration date									Jan. 01, 2028
Share-based compensation arrangement by share-based payment award, percentage of outstanding our common stock									4.00%
Grant of inducement awards and reserved, shares												200,000
Options contractual term					10 years
Available for the grant of future awards							333,376		333,376
2018 Stock Incentive Plan | Executive Officers and Employees
Stockholders Equity [Line Items]
Share-based compensation arrangement by share-based payment award, stock options vesting period					4 years
2018 Stock Incentive Plan | Executive Officers and Employees | One-year Anniversary of the Grant Date
Stockholders Equity [Line Items]
Share-based compensation arrangement by share-based payment award, Vesting percentage					25.00%
Awards granted under the plan									0	0	0
2018 Stock Incentive Plan | Executive Officers and Employees | Quarterly over Remaining Three Years
Stockholders Equity [Line Items]
Share-based compensation arrangement by share-based payment award, Vesting percentage					75.00%
2018 Stock Incentive Plan | Executive Officers and Employees | January 1, 2021
Stockholders Equity [Line Items]
Share-based compensation arrangement by share-based payment award, Vesting percentage			50.00%
2018 Stock Incentive Plan | Executive Officers and Employees | January 1, 2022
Stockholders Equity [Line Items]
Share-based compensation arrangement by share-based payment award, Vesting percentage			50.00%
2018 Stock Incentive Plan | Board of Directors
Stockholders Equity [Line Items]
Share-based compensation arrangement by share-based payment award, stock options vesting period					12 months
2013 Stock Incentive Plan
Stockholders Equity [Line Items]
Number of common stock authorized for issuance						165,000
Options contractual term						10 years
Awards granted under the plan									0
2010 Stock Incentive Plan
Stockholders Equity [Line Items]
Number of common stock authorized for issuance						470,170
Options contractual term						10 years
Awards granted under the plan									0
Lincoln Park
Stockholders Equity [Line Items]
Issuance of common stock, net of issuance costs, shares							300,000	0	300,000	200,000
Issuance of common stock, price per share							$ 1.25		$ 1.25
Proceeds from issuance of common stock gross							$ 400,000		$ 400,000
Proceeds from issuance of common stock, net of issuance costs									400,000	$ 500,000
Remaining obligation							$ 11,800,000		$ 11,800,000
Number of shares, company may sell on any single business day	50,000
Maximum amount of Common stock at time of sale, per regular purchase	$ 1,000,000.0
Maximum percentage of shares may be issued or sold based on outstanding shares immediately prior to execution of agreement	19.99%
Issuance of common stock for commitment fee, shares	148,148
Fair value of the commitment fee shares, recorded to general and administrative expense along with other costs incurred	$ 400,000
Weighted Average | Lincoln Park
Stockholders Equity [Line Items]
Issuance of common stock, price per share							$ 1.25	$ 2.47	$ 1.25	$ 2.47
Maximum | 2010 and 2013 Stock Incentive Plan
Stockholders Equity [Line Items]
Number of share outstanding					635,170
Maximum | Lincoln Park
Stockholders Equity [Line Items]
Beneficially ownership percentage	9.99%
Maximum | Lincoln Park
Stockholders Equity [Line Items]
Shares value might be issued under agreement	$ 15,000,000.0
Number of shares, company may sell on any single business day	100,000
Minimum [Member] | Lincoln Park
Stockholders Equity [Line Items]
Threshold price per share for issuance of shares under agreement	$ 2.1668
At-the-Market Facility
Stockholders Equity [Line Items]
Issuance of common stock, net of issuance costs, shares							1,062,547		1,062,547	877,107
Proceeds from issuance of common stock gross							$ 3,300,000		$ 3,300,000	$ 2,800,000
Common stock offering costs							200,000		200,000	200,000
Proceeds from issuance of common stock, net of issuance costs							3,100,000		3,100,000	$ 2,600,000
Amount remained available under facility							$ 36,700,000		$ 36,700,000
At-the-Market Facility | Weighted Average
Stockholders Equity [Line Items]
Issuance of common stock, price per share							$ 3.0719	$ 3.1692	$ 3.0719	$ 3.1692
At-the-Market Facility | Maximum
Stockholders Equity [Line Items]
Aggregate offering price of common stock		$ 50,000,000.0		$ 50,000,000.0

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Stockholders' (Deficit) Equity - Summary of Option Activity under 2018 Plan, 2013 Plan and 2010 Plan (Details) - $ / shares	6 Months Ended	12 Months Ended
	Jun. 30, 2022	Dec. 31, 2021
Options
Number of Shares, Options outstanding at beginning of period	1,954,975
Awards granted under the plan	958,000
Number of Shares, Options Cancelled/forfeited	(62,188)
Number of Shares, Options outstanding at end of period	2,850,787	1,954,975
Number of Shares, Options exercisable at end of period	1,322,180
Weighted Average Exercise Price, Options
Weighted Average Exercise Price, Options outstanding at beginning of period	$ 8.16
Weighted Average Exercise Price, Options Granted	2.33
Weighted Average Exercise Price, Options Cancelled/forfeited	4.12
Weighted Average Exercise Price, Options outstanding at end of period	6.29	$ 8.16
Weighted Average Exercise Price, Options exercisable at end of period	$ 9.80
Weighted Average Remaining Contract Term, Options
Weighted Average Remaining Contractual Term, Options outstanding at beginning of period	8 years	7 years 9 months 18 days
Weighted Average Remaining Contractual Term, Options exercisable at end of period	6 years 7 months 6 days

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Stockholders' (Deficit) Equity - Summary of Stock-Based Compensation Expense (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Stockholders Equity [Line Items]
Stock-based compensation expense	$ 460,777	$ 594,663	$ 934,874	$ 1,154,099
Research and Development
Stockholders Equity [Line Items]
Stock-based compensation expense	158,880	176,534	299,320	344,580
General and Administrative
Stockholders Equity [Line Items]
Stock-based compensation expense	$ 301,897	$ 418,129	$ 635,554	$ 809,519

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Stockholders' (Deficit) Equity - Summary of Warrant Issued (Details) - Warrants Issued to SWK	6 Months Ended
	Jun. 30, 2022 $ / shares shares
Stockholders Equity [Line Items]
Number of shares, Granted during the period | shares	150,000
Number of shares,Outstanding at end of the period | shares	150,000
Number of shares, Exercisable at end of the period | shares	150,000
Weighted average remaining life	6 years 9 months 18 days
Weighted Average Exercise Price, Granted | $ / shares	$ 2.46
Weighted Average Exercise Price, Outstanding at end of the period | $ / shares	2.46
Weighted Average Exercise Price, Exercisable at end of the period | $ / shares	$ 2.46

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Net Loss Per Share (As Restated) - Schedule of Numerator and Denominator used in Calculation of Basic and Diluted Net Loss Per Common Share (Details) - USD ($)	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Numerator:
Net loss	$ (2,667,036)	$ (9,179,004)	$ (3,069,037)	$ (4,611,305)	$ (11,846,040)	$ (7,680,342)
Basic:
Weighted average common shares outstanding - basic (as restated)	15,273,707		14,310,244		14,794,637	14,225,551
Diluted:
Weighted average common shares outstanding - basic (as restated)	15,273,707		14,310,244		14,794,637	14,225,551
Effect of potentially dilutive shares	2,407,693				1,577,900
Total weighted average shares of common stock and potentially dilutive shares	17,681,400		14,310,244		16,372,537	14,225,551
Basic:
Net loss applicable to common stockholders	$ (2,667,036)				$ (11,846,040)
Weighted average common shares outstanding - basic (as restated)	15,273,707		14,310,244		14,794,637	14,225,551
Net loss per share - basic (as restated)	$ (0.17)		$ (0.21)		$ (0.80)	$ (0.54)
Diluted:
Net loss applicable to common shareholders, diluted	$ (5,308,236)				$ (13,524,840)
Weighted average common shares outstanding - diluted (as restated)	17,681,400		14,310,244		16,372,537	14,225,551
Net loss per share - diluted (as restated)	$ (0.30)		$ (0.21)		$ (0.83)	$ (0.54)

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Net Loss Per Share (As Restated) - Schedule of Numerator and Denominator used in Calculation of Basic and Diluted Net Loss Per Common Share (Parenthetical) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Adjustment to Fair Value Mark to Market			$ (3,767,060)
Securities excluded from computation of net loss per share	3,000,787	1,751,475	3,000,787	1,751,475
Senior Convertible Notes
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Adjustment to Fair Value Mark to Market	$ 2,600,000		$ 1,700,000
Securities excluded from computation of net loss per share	2,407,693		1,577,900

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Net Loss Per Share (As Restated) - Schedule of Number of Shares of Common Stock Underlying Potentially Dilutive Securities (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Common stock potentially dilutive securities	3,000,787	1,751,475	3,000,787	1,751,475
Options to Purchase Common Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Common stock potentially dilutive securities			2,850,787	1,751,475
SWK Warrant
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Common stock potentially dilutive securities			150,000
Options to Purchase Common Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Common stock potentially dilutive securities	2,850,787	1,751,475
SWK Warrant
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Common stock potentially dilutive securities	150,000

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Subsequent Events - Additional Information (Details) - USD ($)	1 Months Ended	3 Months Ended	6 Months Ended
	Aug. 15, 2022	Jun. 30, 2022	Jun. 30, 2022	Jun. 30, 2021
Subsequent Event [Line Items]
Issuance of common stock, net of issuance costs, shares		300,000
Proceeds from issuance of common stock, net of issuance costs		$ 400,000	$ 3,524,198	$ 3,139,047
Subsequent Event | Lincoln Park
Subsequent Event [Line Items]
Issuance of common stock, net of issuance costs, shares	275,000
Issuance of common stock, price per share	$ 1.38
Proceeds from issuance of common stock gross	$ 400,000
At-the-Market Facility
Subsequent Event [Line Items]
Issuance of common stock, net of issuance costs, shares		1,062,547	1,062,547	877,107
Proceeds from issuance of common stock gross		$ 3,300,000	$ 3,300,000	$ 2,800,000
Proceeds from issuance of common stock, net of issuance costs		$ 3,100,000	$ 3,100,000	$ 2,600,000
At-the-Market Facility | Subsequent Event
Subsequent Event [Line Items]
Issuance of common stock, net of issuance costs, shares	133,206
Issuance of common stock, price per share	$ 1.51
Proceeds from issuance of common stock gross	$ 200,000
Proceeds from issuance of common stock, net of issuance costs	$ 200,000