10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 10-Q

(Mark One)

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

For the quarterly period ended March 31, 2020

Or

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

Commission file number: 001-36020

Onconova Therapeutics, Inc.

(Exact name of registrant as specified in its charter)

Delaware	22-3627252
(State or other jurisdiction of	(I.R.S. Employer
incorporation or organization)	Identification No.)

375 Pheasant Run, Newtown, PA	18940
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code: (267) 759-3680

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.           x     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).           x     Yes           ¨     No

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

Large accelerated filer      ¨	Accelerated filer      ¨
Non-accelerated filer    x	Smaller reporting company    x
	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 Act).    ¨  Yes     x  No

The number of outstanding shares of the registrant’s Common Stock, par value $0.01 per share, as of May 1, 2020 was 168,666,070.

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, par value $.01 per share	ONTX	The Nasdaq Stock Market LLC
Common Stock Warrants	ONTXW	The Nasdaq Stock Market LLC

ONCONOVA THERAPEUTICS, INC.

TABLE OF CONTENTS FOR QUARTERLY REPORT ON FORM 10-Q

FOR THE QUARTER ENDED MARCH 31, 2020

	Page
PART I — FINANCIAL INFORMATION
Item 1. Financial Statements (Unaudited)
Condensed Consolidated Balance Sheets		2
Condensed Consolidated Statements of Operations		3
Condensed Consolidated Statements of Comprehensive Loss		4
Consolidated Statement of Stockholders’ Equity (Deficit)		5
Condensed Consolidated Statements of Cash Flows		6
Notes to Condensed Consolidated Financial Statements		7
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations		25
Item 3. Quantitative and Qualitative Disclosures About Market Risk		38
Item 4. Controls and Procedures		39
PART II — OTHER INFORMATION
Item 1. Legal Proceedings		40
Item 1A. Risk Factors		40
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds		43
Item 3. Defaults Upon Senior Securities		43
Item 4. Mine Safety Disclosures		43
Item 5. Other Information		43
Item 6. Exhibits		44
SIGNATURES		46

1

PART I — FINANCIAL INFORMATION

Item 1. Financial Statements

Onconova Therapeutics, Inc.

Condensed Consolidated Balance Sheets

	March 31,			December 31,
	2020			2019
Assets		(unaudited)
Current assets:
Cash and cash equivalents	$	31,036,000		$	22,726,000
Receivables		45,000			98,000
Prepaid expenses and other current assets		795,000			650,000
Total current assets		31,876,000			23,474,000
Property and equipment, net		47,000			50,000
Other non-current assets		150,000			150,000
Total assets	$	32,073,000		$	23,674,000
Liabilities and stockholders' equity
Current liabilities:
Accounts payable	$	4,183,000		$	4,271,000
Accrued expenses and other current liabilities		2,501,000			3,795,000
Deferred revenue		226,000			226,000
Total current liabilities		6,910,000			8,292,000
Warrant liability		176,000			113,000
Deferred revenue, non-current		3,639,000			3,695,000
Total liabilities		10,725,000			12,100,000
Commitments and contingencies
Stockholders'  equity:
Preferred stock, $0.01 par value, 5,000,000 authorized at March 31, 2020 and December 31, 2019, none issued and outstanding at March 31, 2020 and December 31, 2019		-			-
Common stock, $0.01 par value, 250,000,000 authorized at March 31, 2020 and December 31, 2019, 167,416,070 and 111,167,352 shares issued and outstanding at March  31, 2020 and December 31, 2019		1,674,000			1,112,000
Additional paid in capital		428,189,000			413,879,000
Accumulated other comprehensive loss		(24,000	)		(18,000	)
Accumulated deficit		(408,491,000	)		(403,399,000	)
Total stockholders'  equity		21,348,000			11,574,000
Total liabilities and stockholders'  equity	$	32,073,000		$	23,674,000

See accompanying notes to condensed consolidated financial statements.

2

Onconova Therapeutics, Inc.

Condensed Consolidated Statements of Operations (unaudited)

	Three Months Ended March 31,
	2020			2019
Revenue	$	52,000		$	68,000
Operating expenses:
General and administrative		1,807,000			3,234,000
Research and development		3,370,000			4,075,000
Total operating expenses		5,177,000			7,309,000
Loss from operations		(5,125,000	)		(7,241,000	)
Change in fair value of warrant liability		(63,000	)		(427,000	)
Other income, net		96,000			68,000
Net loss	$	(5,092,000	)	$	(7,600,000	)
Net loss per share, basic and diluted	$	(0.03	)	$	(1.29	)
Basic and diluted weighted average shares outstanding		160,346,087			5,890,098

See accompanying notes to condensed consolidated financial statements.

3

Onconova Therapeutics, Inc.

Condensed Consolidated Statements of Comprehensive Loss (unaudited)

	Three Months Ended March 31,
	2020			2019
Net loss	$	(5,092,000	)	$	(7,600,000	)
Other comprehensive loss, before tax:
Foreign currency translation adjustments, net		(6,000	)		(6,000	)
Other comprehensive loss, net of tax		(6,000	)		(6,000	)
Comprehensive loss	$	(5,098,000	)	$	(7,606,000	)

See accompanying notes to condensed consolidated financial statements.

4

Onconova Therapeutics, Inc.

Consolidated Statement of Stockholders’ Equity (Deficit) (unaudited)

	Three Month Periods Ended March 31, 2020 and 2019
										Accumulated
					Additional					other
	Common Stock				Paid in		Accumulated			comprehensive
	Shares		Amount		Capital		deficit			loss			Total
Balance at December 31, 2019		111,167,352	$	1,112,000	$	413,879,000	$	(403,399,000	)	$	(18,000	)	$	11,574,000
Net loss		-		-		-		(5,092,000	)		-			(5,092,000	)
Other comprehensive loss		-		-		-		-			(6,000	)		(6,000	)
Stock-based compensation		-		-		93,000		-			-			93,000
Issuance of common stock, net		27,662,518		276,000		8,786,000		-			-			9,062,000
Issuance of common stock upon exercise of warrants		28,586,200		286,000		5,431,000		-			-			5,717,000
Balance at March 31, 2020		167,416,070	$	1,674,000	$	428,189,000	$	(408,491,000	)	$	(24,000	)	$	21,348,000
Balance at December 31, 2018		5,674,220	$	57,000	$	387,238,000	$	(381,896,000	)	$	(12,000	)	$	5,387,000
Net loss		-		-		-		(7,600,000	)		-			(7,600,000	)
Other comprehensive loss		-		-		-		-			(6,000	)		(6,000	)
Stock-based compensation		-		-		650,000		-			-			650,000
Issuance of common stock upon exercise of warrants		220,784		2,000		31,000		-			-			33,000
Balance at March 31, 2019		5,895,004	$	59,000	$	387,919,000	$	(389,496,000	)	$	(18,000	)	$	(1,536,000	)

See accompanying notes to condensed consolidated financial statements.

5

Onconova Therapeutics, Inc.

Condensed Consolidated Statements of Cash Flows (unaudited)

	Three Months ended March 31,
	2020			2019
Operating activities:
Net loss	$	(5,092,000	)	$	(7,600,000	)
Adjustment to reconcile net loss to net cash used in operating activities:
Depreciation and amortization		3,000			8,000
Change in fair value of warrant liabilities		63,000			427,000
Stock compensation expense		93,000			650,000
Changes in assets and liabilities:
Receivables		53,000			-
Prepaid expenses and other current assets		(145,000	)		-
Accounts payable		(88,000	)		295,000
Accrued expenses and other current liabilities		(1,294,000	)		(324,000	)
Deferred revenue		(56,000	)		(57,000	)
Net cash used in operating activities		(6,463,000	)		(6,601,000	)
Investing activities:
Payments for purchase of property and equipment		-			-
Net cash used in investing activities		-			-
Financing activities:
Proceeds from the sale of common stock and warrants, net of costs		9,062,000			-
Proceeds from the exercise of warrants		5,717,000			33,000
Net cash provided by financing activities		14,779,000			33,000
Effect of foreign currency translation on cash		(6,000	)		(6,000	)
Net increase (decrease) in cash and cash equivalents		8,310,000			(6,574,000	)
Cash and cash equivalents at beginning of period		22,726,000			16,970,000
Cash and cash equivalents at end of period	$	31,036,000		$	10,396,000

See accompanying notes to condensed consolidated financial statements.

6

Onconova Therapeutics, Inc.

Notes to Condensed Consolidated Financial Statements

(Unaudited)

1. Nature of Business

The Company

Onconova Therapeutics, Inc. (the "Company") was incorporated in the State of Delaware on December 22, 1998 and commenced operations on January 1, 1999. The Company's headquarters are located in Newtown, Pennsylvania. The Company is a clinical-stage biopharmaceutical company focused on discovering and developing novel small molecule product candidates primarily to treat cancer. The Company has proprietary targeted cancer agents designed to work against specific cellular pathways that are important to cancer cells. We believe that the product candidates in our pipeline have the potential to be efficacious in a variety of cancers. The Company has three clinical-stage product candidates and several preclinical programs. During 2012, Onconova Europe GmbH was established as a wholly owned subsidiary of the Company for the purpose of further developing business in Europe.

The Company has entered into several license and collaboration agreements. In 2011, the Company entered into a license agreement, as subsequently amended, with SymBio Pharmaceuticals Limited ("SymBio"), which grants SymBio certain rights to commercialize rigosertib in Japan and Korea. In December 2017, the Company entered into a license and collaboration agreement with HanX for the further development, registration and commercialization of ON 123300 in Greater China. ON 123300 is a preclinical compound which the Company believes has the potential to overcome the limitations of current generation CDK 4/6 inhibitors. Under the terms of the agreement, the Company received an upfront payment, and will receive regulatory and commercial milestone payments, as well as royalties on Chinese sales. The key feature of the collaboration is that HanX provides all funding required for Chinese IND enabling studies performed for Chinese Food and Drug Administration IND approval. The Company and HanX also intended for these studies to comply with the FDA standards. Accordingly, such studies may be used by the Company for an IND filing with the FDA. The Chinese IND was approved in January 2020. The Company plans to file a US IND related to 123300 after obtaining the required manufacturing data. The cGMP manufacturer for ON 123300 has been identified and qualified. It is anticipated that the cGMP API would be available in 4-6 months. Subsequently, the drug product will be manufactured with an anticipated filing of an IND in Q4 of 2020. The Company maintains global rights outside of China. On March 2, 2018, the Company entered into a License, Development and Commercialization Agreement with Pint International SA (which, together with its affiliate Pint Pharma GmbH, are collectively referred to as "Pint"). Under the terms of the agreement, the Company granted Pint an exclusive, royalty-bearing license, with the right to sublicense, under certain Company patent rights and know-how to develop and commercialize any pharmaceutical product containing rigosertib in all uses of rigosertib in certain Latin America countries. In May 2019, the Company entered into a License and Collaboration Agreement (the "HanX License Agreement") with HanX Biopharmaceuticals, Inc. ("HanX"). Under the terms of the HanX License Agreement, the Company granted HanX an exclusive, royalty-bearing license, with the right to sublicense, under certain Company patent rights and know-how to develop and commercialize any pharmaceutical product (the "HanX Product") containing rigosertib in all uses of rigosertib or the HanX Product in humans therapeutics uses in the People's Republic of China, Hong Kong, Macau and Taiwan (the "HanX Territory"). In connection with the License Agreement, the Company also entered into a Securities Purchase Agreement with each of HanX and Abundant New Investments Ltd. ("Abundant"), an affiliate of HanX (each, a "Securities Purchase Agreement" and together, the "Securities Purchase Agreements"). HanX did not fulfill its obligations under the HanX License Agreement and in January 2020, in accordance with the terms of the HanX License Agreement, the HanX License Agreement was deemed to be void ab initio. Upon this termination, the rights to HanX Product in the HanX Territory reverted to the Company in accordance with the terms of the HanX License Agreement. In addition, the Securities Purchase Agreements terminated automatically effective upon the termination of the HanX License Agreement in accordance with the Securities Purchase Agreements. In November 2019, the Company entered into a Distribution, License and Supply Agreement (the "Knight License Agreement") with Knight Therapeutics Inc. ("Knight"). Under the terms of the Knight License Agreement, the Company granted Knight (i) a non-exclusive, royalty-bearing license, with the right to sublicense, under certain Company patent rights and know-how to develop and manufacture any product (the "Knight Licensed Product") containing rigosertib for Canada (and Israel should Knight exercise its option) (the "Knight Territory") and in human uses (the "Field"), and (ii) an exclusive, royalty-bearing license, with the right to sublicense, under certain Company patent rights and know-how to commercialize the Knight Licensed Product in the Knight Territory and in the Field. Knight has also agreed to obtain from the Company us all of its requirements of the Knight Licensed Products for the Knight Territory, and the Company has agreed to supply Knight with all of its requirements of the Knight Licensed Products. In December 2019, the Company entered into a Distribution, License and Supply Agreement (the "STA License Agreement") with Specialised Therapeutics Asia Pte. Ltd. ("STA"). Under the terms of the STA License Agreement, the Company granted STA (i) a non-exclusive, royalty-bearing license, with the right to sublicense, under certain Company patent rights and know-how to develop and manufacture any product (the "STA Licensed Product") containing rigosertib for Australia and New Zealand (the "STA Territory") and in human uses (the "Field"), and (ii) an exclusive, royalty-bearing license, with the right to sublicense, under certain Company patent rights and know-how to commercialize the STA Licensed Product in the STA Territory and in the Field. STA has also agreed to obtain from the Company all of its requirements of the STA Licensed Products for the STA Territory, and the Company has agreed to supply STA with all of its requirements of the STA Licensed Products.

7

Onconova Therapeutics, Inc.

Notes to Condensed Consolidated Financial Statements

(Unaudited)

Liquidity

The Company has incurred recurring operating losses since inception. For the three months ended March 31, 2020, the Company incurred a net loss of $5,092,000 and as of March 31, 2020 the Company had generated an accumulated deficit of $408,491,000. The Company anticipates operating losses to continue for the foreseeable future due to, among other things, costs related to research, development of its product candidates and its preclinical programs, strategic alliances and its administrative organization. At March 31, 2020, the Company had cash and cash equivalents of $31,036,000. The Company will require substantial additional financing to fund its ongoing clinical trials and operations, and to continue to execute its strategy.

In February and March 2019 the Company implemented a workforce reduction. Six employees were terminated, which represented approximately 24% of the Company's workforce. A severance related charge of approximately $1,843,000, which included a non-cash charge of approximately $415,000 related to the accelerated vesting of outstanding stock options, was recorded in the three months ended March 31, 2019. Of the total severance related charge of $1,843,000; $1,562,000 was recorded in general and administrative operating expenses and $281,000 was recorded in research and development operating expenses. The severance expense was paid in periodic amounts through February 2020.

On September 25, 2019 the Company closed on an offering of common stock to certain investors. The Company issued 2,198,938 shares of common stock and amended warrants for the purchase of 2,198,938 shares of common stock. The investors, who were also holders of the Company's preferred stock warrants issued in February 2018 and/or May 2018, received a warrant amendment under which a certain number of such investors' preferred stock warrants received a reduction in exercise price and an extension of term. Net proceeds from the sale of common stock and the amendment of preferred stock warrants were approximately $3.3 million. In November 2019, the Company closed on an offering of units of common stock and warrants. The Company issued 30,250,000 shares of common stock, pre-funded warrants to purchase 24,750,000 shares of common stock, and common stock warrants to purchase 55,000,000 shares of common stock. Net proceeds were approximately $9.7 million. On December 10, 2019, the Company closed on an offering of units of common stock and warrants. The Company issued 14,326,648 shares of common stock and common stock warrants to purchase 7,163,324 shares of common stock. Net proceeds were approximately $4.4 million. On December 19, 2019, the Company also closed on an offering of units of common stock and warrants. The Company issued 13,878,864 shares of common stock and common stock warrants to purchase 6,939,432 shares of common stock. Net proceeds were approximately $4.4 million. During 2019, pre-funded warrants were exercised for 23,720,784 shares of common stock and net proceeds were $35,000. Also during 2019, common warrants were exercised for 21,014,378 shares of common stock and net proceeds were approximately $4.9 million.

On January 3, 2020, the Company closed on an offering of common stock. The Company issued 27,662,518 shares of common stock and net proceeds were approximately $9.0 million. In addition, during the quarter ended March 31, 2020; 28,586,200 warrants from the November 2019 offering have been exercised, resulting in proceeds of $5.7 million.

8

Onconova Therapeutics, Inc.

Notes to Condensed Consolidated Financial Statements (Continued)

(Unaudited)

The Company has and may continue to delay, scale-back, or eliminate certain of its research and development activities and other aspects of its operations until such time as the Company is successful in securing additional funding. The Company is exploring various dilutive and non-dilutive sources of funding, including equity financings, strategic alliances, business development and other sources. The future success of the Company is dependent upon its ability to obtain additional funding. There can be no assurance, however, that the Company will be successful in obtaining such funding in sufficient amounts, on terms acceptable to the Company, or at all. The Company currently anticipates that current cash and cash equivalents will be sufficient to meet its anticipated cash requirements into the third quarter of 2021.

2. Summary of Significant Accounting Policies

Basis of Presentation

The condensed consolidated financial statements are prepared in conformity with accounting principles generally accepted in the United States (“GAAP”) for interim financial information. Certain information and footnotes normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). The financial statements include the consolidated accounts of the Company and its wholly-owned subsidiary, Onconova Europe GmbH. All significant intercompany transactions have been eliminated.

Unaudited Interim Financial Information

The accompanying condensed consolidated balance sheet as of March 31, 2020, the condensed consolidated statements of operations and comprehensive loss for the three months ended March 31, 2020 and 2019, the consolidated statements of stockholders’ equity (deficit) for the three months ended March 31, 2020 and 2019 and the condensed consolidated statements of cash flows for the three months ended March 31, 2020 and 2019 are unaudited. The interim unaudited condensed consolidated financial statements have been prepared on the same basis as the annual audited consolidated financial statements and, in the opinion of management, reflect all adjustments, which include only normal recurring adjustments, necessary for the fair statement of the Company’s financial position as of March 31, 2020, the results of its operations for the three months ended March 31, 2020 and 2019, and its cash flows for the three months ended March 31, 2020 and 2019. The financial data and other information disclosed in these notes related to the three months ended March 31, 2020 and 2019 are unaudited. The results for the three months ended March 31, 2020 are not necessarily indicative of results to be expected for the year ending December 31, 2019, any other interim periods, or any future year or period.  These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the notes thereto for the year ended December 31, 2019 included in the Company’s annual report on Form 10-K filed with the SEC on March 27, 2020.

Segment Information

Operating segments are defined as components of an enterprise about which separate discrete information is available for evaluation by the chief operating decision maker, or decision-making group, in deciding how to allocate resources and in assessing performance. The Company views its operations and manages its business in one segment, which is the identification and development of oncology therapeutics.

9

Onconova Therapeutics, Inc.

Notes to Condensed Consolidated Financial Statements (Continued)

(Unaudited)

2. Summary of Significant Accounting Policies (Continued)

Significant Accounting Policies

The Company’s significant accounting policies are disclosed in the audited consolidated financial statements for the year ended December 31, 2019 included in the Company’s annual report on Form 10-K filed with the SEC on March 27, 2020. Since the date of such financial statements, there have been no changes to the Company’s significant accounting policies.

Fair Value Measurements

The carrying amounts reported in the accompanying consolidated financial statements for cash and cash equivalents, accounts payable, and accrued liabilities approximate their respective fair values because of the short-term nature of these accounts. The fair value of the warrant liability is discussed in Note 7, “Fair Value Measurements.”

Revenue Recognition

The Company recognizes revenue in accordance with Accounting Standards Codification Topic 606, Revenue from Contracts with Customers (ASC 606), which the Company adopted effective January 1, 2018 using the modified retrospective method. There was no material impact to our financial position and results of operations as a result of the adoption. The Company applies ASC 606 to all contracts with customers, except for contracts that are within the scope of other standards, such as leases, insurance, collaboration arrangements and financial instruments. In accordance with ASC 606, the Company recognizes revenue when its customer obtains control of promised goods or services, in an amount that reflects the consideration which the Company expects to receive in exchange for those goods or services. To determine revenue recognition for arrangements that the Company determines are within the scope of ASC 606, the Company performs the following five steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the Company satisfies a performance obligation. The Company only applies the five-step model to contracts when it is probable that it will collect the consideration it is entitled to in exchange for the goods and services it transfers to the customer. At contract inception, the Company assesses the goods or services promised within each contract that falls under the scope of ASC 606, determines those that are performance obligations and assesses whether each promised good or service is distinct.  The Company then recognizes as revenue the amount of the transaction price that is allocated to the respective performance obligation when (or as) the performance obligation is satisfied.

The Company derives revenue from collaboration and licensing agreements and from the sale of products associated with material transfer, collaboration and supply agreements.

License, Collaboration and Other Revenues

The Company enters into licensing and collaboration agreements, under which it licenses certain of its product candidates’ rights to third parties.  The Company recognizes revenue related to these agreements in accordance with ASC 606. The terms of these arrangements typically include payment from third parties of one or more of the following: non-refundable, up-front license fees; development, regulatory and commercial milestone payments; and royalties on net sales of the licensed product.

In determining the appropriate amount of revenue to be recognized as it fulfills its obligation under each of its agreements, the Company performs the five steps described above. As part of the accounting for these arrangements, the Company must develop assumptions that require judgment to determine the stand-alone selling price, which may include forecasted revenues, development timelines, reimbursement of personnel costs, discount rates and probabilities of technical and regulatory success.

10

Onconova Therapeutics, Inc.

Notes to Condensed Consolidated Financial Statements (Continued)

(Unaudited)

2. Summary of Significant Accounting Policies (Continued)

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

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

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

Royalties: For arrangements that include sales-based royalties, including milestone payments based on the level of sales, and for which the license is deemed to be the predominant item to which royalties relate, the Company recognizes revenue at the later of (i) when the related sales occur, or (ii) when the performance obligation to which some of all of the royalty has been allocated has been satisfied (or partially satisfied).  To date, the Company has not recognized any royalty revenue from its license agreements.

Leases

The Company accounts for leases in accordance with Accounting Standards Codification Topic 842, Leases (ASC 842), which the Company adopted effective January 1, 2019. The Company determines whether an arrangement is a lease at contract inception by establishing if the contract conveys the right to control the use of identified property, plant, or equipment for a period of time in exchange for consideration.

Right of Use (ROU) Assets and Lease Liabilities are recognized at the lease commencement date based on the present value of all minimum lease payments over the lease term. The Company uses its incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments, when the implicit rate is not readily determinable. Lease terms may include options to extend or terminate the lease. These options are included in the lease term when it is reasonably certain that the Company will exercise that option. Operating lease expense is recognized on a straight-line basis over the lease term.

The Company has elected the following policy elections on adoption: use of portfolio approach on leases of assets under master service agreements, exclusion of short term leases (term of 12 months or less) on the balance sheet, and not separating lease and non-lease components.

At January 1, 2019 and March 31, 2020 the Company had one lease, which was for office space. The lease qualifies for the short term lease exception. Consequently, no ROU Asset or Lease Liability was recorded. The lease payments are being recognized as an expense on a straight-line basis over the lease term. Lease payments for the three months ended March 31, 2020 were $45,000. Remaining payments due under the lease at March 31, 2020 are $166,000.

11

Onconova Therapeutics, Inc.

Notes to Condensed Consolidated Financial Statements (Continued)

(Unaudited)

2. Summary of Significant Accounting Policies (Continued)

Recent Accounting Pronouncements

In February 2016 and through subsequent amendments, the FASB issued guidance which supersedes much of the previous guidance for leases. The new guidance requires lessees to recognize a right-of-use asset and a lease liability on their balance sheets for all the leases with terms greater than twelve months. Based on certain criteria, leases are classified as either financing or operating, with classification affecting the pattern of expense recognition in the income statement. For leases with a term of twelve months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and lease liabilities. If a lessee makes this election, it should recognize lease expense for such leases generally on a straight-line basis over the lease term. The guidance was effective for fiscal years beginning after December 15, 2018, and interim periods within those years, with early adoption permitted. In transition, lessees and lessors were permitted to recognize and measure leases at the date of adoption using a modified retrospective approach. The modified retrospective approach includes a number of optional practical expedients primarily focused on leases that commenced before the effective date of the new guidance, including continuing to account for leases that commence before the effective date in accordance with previous guidance, unless the lease is modified. The Company adopted the guidance in ASC 842 effective January 1, 2019 using the modified retrospective method, which does not require the restatement of prior period amounts. There was no impact to the Company’s financial position and results of operations as a result of the adoption.

In August 2018, the FASB issued guidance which changes the disclosure requirements for fair value measurement. The guidance amends the disclosure requirements in ASC Topic 820 by adding, changing, or removing certain disclosures. The guidance is effective for fiscal years beginning after December 15, 2019. The Company adopted this guidance effective January 1, 2020. There was no impact to the Company’s financial position, results of operations or financial statement disclosures as a result of the adoption.

In November 2018, the FASB issued guidance, which clarifies the interaction between ASC Topic 808, Collaborative Arrangements , and ASC Topic 606, Revenue from Contracts with Customers . The guidance, among other items, clarifies that certain transactions between collaborative participants should be accounted for as revenue under Topic 606 when the collaborative arrangement participant is a customer in the context of a unit of account. The guidance is effective for fiscal years beginning after December 15, 2019. The Company adopted this guidance effective January 1, 2020. There was no impact to the Company’s financial position and results of operations as a result of the adoption.

In June 2016, the FASB issued new guidance on the accounting for credit losses on financial instruments. The guidance was amended in November 2019. The new guidance introduces an expected loss model for estimating credit losses, replacing the incurred loss model. The new guidance also changes the impairment model for available-for-sale debt securities, requiring the use of an allowance to record estimated credit losses (and subsequent recoveries). The guidance is effective for fiscal years beginning after December 15, 2022, and interim periods within those years, with early adoption permitted. The Company is evaluating the impact of the adoption of the standard on its consolidated financial statements.

12

Onconova Therapeutics, Inc.

Notes to Condensed Consolidated Financial Statements (Continued)

(Unaudited)

3.  Revenue

The Company’s revenue during the three ended March 31, 2020 and 2019 was from its license and collaboration agreement with SymBio.

	Three Months Ended  March 31,
	2020			2019
Symbio
Upfront license fee recognition over time	$	56,000		$	57,000
Supplies and other		(4,000	)		11,000
	$	52,000		$	68,000

Deferred revenue is as follows:

	Symbio
	Upfront Payment
Deferred balance at December 31, 2019	$	3,921,000
Recognition to revenue		56,000
Deferred balance at March 31, 2020	$	3,865,000

13

Onconova Therapeutics, Inc.

Notes to Condensed Consolidated Financial Statements (Continued)

(Unaudited)

4.  Net Loss Per Share of Common Stock

The following potentially dilutive securities outstanding at March 31, 2020 and 2019 have been excluded from the computation of diluted weighted average shares outstanding, as they would be antidilutive (reflects the number of common shares as if the dilutive securities had been converted to common stock):

	March 31,
	2020		2019
Warrants		27,373,567		5,504,722
Stock options		1,017,393		345,794
		28,390,960		5,850,516

5.  Warrants

Common Stock warrants are accounted for in accordance with applicable accounting guidance provided in ASC Topic 815, Derivatives and Hedging — Contracts in Entity’s Own Equity (ASC Topic 815), as either derivative liabilities or as equity instruments depending on the specific terms of the warrant agreement. Some of the Company’s warrants are classified as liabilities because in certain circumstances they could require cash settlement.

Warrants outstanding and warrant activity (reflects the number of common shares as if the warrants were converted to common stock) for the three months ended March 31, 2020 is as follows:

					Balance					Balance
		Exercise		Expiration	December 31,	Warrants	Warrants		Warrants	March 31,
Description	Classification	Price		Date	2019	Issued / Amended	Exercised		Expired / Amended	2020
Non-tradable warrants	Liability	$	172.50	July 2021	6,456	-	-		-	6,456
Tradable warrants	Liability	$	73.80	July 2021	212,801	-	-		-	212,801
Non-tradable pre-funded warrants	Equity	$	0.15	July 2023	394	-	-		-	394
Non-tradable warrants	Equity	$	1.60	December 2022	392,834	-	-		-	392,834
Non-tradable warrants	Equity	$	14.10	March 2021	5,000	-	-		-	5,000
Non-tradable warrants	Equity	$	21.15	March 2021	8,333	-	-		-	8,333
Non-tradable warrants	Equity	$	7.7895	June 2021	15,000	-	-		-	15,000
Non-tradable pre-funded warrants	Equity	$	0.15	none	52,834	-	-		-	52,834
Non-tradable warrants	Equity	$	1.600	December 2022	1,806,104	-	-		-	1,806,104
Non-tradable pre-funded warrants	Equity	$	0.15	none	74,617	-	-		-	74,617
Non-tradable warrants	Equity	$	2.00	September 2023	109,585	-	-		-	109,585
Non-tradable pre-funded warrants	Equity	$	0.0001	none	1,250,000	-	-		-	1,250,000
Non-tradable warrants	Equity	$	0.20	November 2024	41,037,000	-	(28,586,200	)	-	12,450,800
Non-tradable warrants	Equity	$	0.250	November 2024	2,521,875	-	-		-	2,521,875
Non-tradable warrants	Equity	$	0.287	December 2024	3,581,662	-	-		-	3,581,662
Non-tradable warrants	Equity	$	0.43625	December 2024	716,332	-	-		-	716,332
Non-tradable warrants	Equity	$	0.298	December 2024	3,469,716	-	-		-	3,469,716
Non-tradable warrants	Equity	$	0.45030	December 2024	693,943	-			-	693,943
Non-tradable warrants	Equity	$	0.45190	December 2023	-	1,383,126			-	1,383,126
					55,954,486	1,383,126	(28,586,200	)	-	28,751,412

14

Onconova Therapeutics, Inc. 

Notes to Condensed Consolidated Financial Statements (Continued)

(Unaudited) 

6. Balance Sheet Detail

Prepaid expenses and other current assets:

	March 31,		December 31,
	2020		2019
Research and development	$	366,000	$	321,000
Manufacturing		39,000		25,000
Insurance		168,000		164,000
Other		222,000		140,000
	$	795,000	$	650,000

Property and equipment:

	March 31,			December 31,
	2020			2019
Property and equipment	$	2,283,000		$	2,283,000
Accumulated depreciation		(2,236,000	)		(2,233,000	)
	$	47,000		$	50,000

Accrued expenses and other current liabilities:

	March 31,		December 31,
	2020		2019
Research and development	$	1,863,000	$	2,016,000
Employee compensation		526,000		1,537,000
Professional fees		112,000		242,000
	$	2,501,000	$	3,795,000

15

Onconova Therapeutics, Inc. 

Notes to Condensed Consolidated Financial Statements (Continued) 

(Unaudited)

7. Fair Value Measurements

Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date.

The Company utilizes a valuation hierarchy for disclosure of the inputs to the valuations used to measure fair value. This hierarchy prioritizes the inputs into three broad levels as follows. Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument. Level 3 inputs are unobservable inputs based on the Company’s own assumptions used to measure assets and liabilities at fair value. A financial asset or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement.

On January 5, 2016, the Company entered into a securities purchase agreement (the “Securities Purchase Agreement”) with an institutional investor providing for the issuance and sale by the Company of 12,912 shares of Common Stock, at a purchase price of $142.50 per share and warrants to purchase up to 6,456 shares of Common Stock (the “Warrants”) for aggregate gross proceeds of $1,840,000. The Company has classified the warrants as a liability (see Note 5). The estimated fair value using the Black-Scholes pricing model was approximately $0 at March 31, 2020 and December 31, 2019.

On July 29, 2016 the Company closed on a Rights Offering, issuing 239,986 shares of Common Stock, 212,801 Tradable Warrants and 43,760 Pre-Funded Warrants. The Tradable Warrants are exercisable for a period of five years for one share of Common Stock at an exercise price of $73.80 per share. After the one-year anniversary of issuance, the Company may redeem the Tradable Warrants for $0.001 per Tradable Warrant if the volume weighted average price of its Common Stock is above $184.50 for each of 10 consecutive trading days. The Company has classified the Tradable Warrants as a liability (see Note 5). The Tradable Warrants have been listed on the Nasdaq Capital Market since issuance and the Company regularly monitors the trading activity. The Company has determined that an active and orderly market for the Tradable Warrants has developed and that the Nasdaq Capital Market price is the best indicator of fair value of the warrant liability. The quoted market price was used to determine the fair value at December 31, 2019 and March 31, 2020.

The Company estimated the fair value of the non-tradable warrant liability at March 31, 2020, using the Black-Scholes option pricing model with the following weighted-average assumptions:

Risk-free interest rate	0.20	%
Expected volatility	82.18	%
Expected term	1.33 years
Expected dividend yield	0	%

Expected volatility is based on the historical volatility of the Company’s Common Stock since its IPO in July 2013.

16

Onconova Therapeutics, Inc. 

Notes to Condensed Consolidated Financial Statements (Continued) 

(Unaudited)

7. Fair Value Measurements (Continued)

The following fair value hierarchy table presents information about the Company’s financial assets and liabilities measured at fair value on a recurring basis as of March 31, 2020 and December 31, 2019:

	Fair Value Measurement as of:
	March 31, 2020								December 31, 2019
	Level 1		Level 2		Level 3		Balance		Level 1		Level 2		Level 3		Balance
Tradable warrants liability	$	176,000	$	-	$	-	$	176,000	$	113,000	$	-	$	-	$	113,000
Non-tradable warrants liability		-		-		-		-		-		-		-		-
Total	$	176,000	$	-	$	-	$	176,000	$	113,000	$	-	$	-	$	113,000

There were no transfers between Level 1 and Level 2 in any of the periods reported.

17

Onconova Therapeutics, Inc. 

Notes to Condensed Consolidated Financial Statements (Continued) 

(Unaudited)

8.  Stock-Based Compensation

The 2007 Equity Compensation Plan as amended (the “2007 Plan”), amended, restated and renamed the Company’s 1999 Stock Based Compensation Plan (the “1999 Plan”), which provided for the granting of incentive and nonqualified stock options and restricted stock to its employees, directors and consultants at the discretion of the board of directors.

The 2013 Equity Compensation Plan (the “2013 Plan”), amended, restated and renamed the 2007 Plan. Under the 2013 Plan, the Company may grant incentive stock options, non-statutory stock options, stock appreciation rights, restricted stock, restricted stock units, deferred share awards, performance awards and other equity-based awards to employees, directors and consultants. The Company initially reserved 40,718 shares of Common Stock for issuance, subject to adjustment as set forth in the 2013 Plan. The 2013 Plan included an evergreen provision, pursuant to which the maximum aggregate number of shares that may be issued under the 2013 Plan is increased on the first day of each fiscal year by the lesser of (a) a number of shares equal to four percent (4%) of the issued and outstanding Common Stock of the Company, without duplication, (b) 13,333 shares and (c) such lesser number as determined by the Company’s board of directors, subject to specified limitations.

The 2018 Omnibus Incentive Compensation Plan (the “2018 Plan”) was unanimously approved by the Company’s Board of Directors on May 24, 2018 and was approved by the Company’s stockholders on June 27, 2018. The 2018 Plan replaces the 2013 Plan. Upon stockholders’ approval of the 2018 Plan, no further awards will be made under the 2013 Plan. Awards granted under the 2013 Plan will continue in effect in accordance with the terms of the applicable award agreement and the terms of the 2013 Plan in effect when the awards were granted.

Under the 2018 Plan, the Company may grant incentive stock options, non-qualified stock options, stock awards, stock units, stock appreciation rights and other stock-based awards to employees, non-employee directors and consultants, and advisors. The maximum aggregate number of shares of the Company’s common stock that may be issued under the 2018 Plan is 402,354, which is equal to the sum of (i) 400,000 shares of the Company’s common stock, plus (ii) 2,354 shares, which is the number of shares of the Company common stock reserved for issuance under the 2013 Plan that remained available as of the effective date of the 2018 Plan. In addition, the number of shares of common stock subject to outstanding awards under the 2013 Plan that terminate, expire, or are cancelled, forfeited, exchanged, or surrendered without having been exercised, vested, or paid in shares under the 2013 Plan after the effective date of the 2018 Plan will be available for issuance under the 2018 Plan.

The 2018 Plan was amended following unanimous approval of the Company’s Board of Directors on April 24, 2019 and was approved by the Company’s shareholders on June 17, 2019.  The amended 2018 Plan (the “Amended Plan”) allowed for an additional 589,500 shares of the Company’s common stock that may be issued under the Amended Plan with respect to awards made on and after June 17, 2019.  At March 31, 2020, there were 36,791 shares available for future issuance.

Stock-based compensation expense includes stock options granted to employees and non-employees and has been reported in the Company’s statements of operations and comprehensive loss in either research and development expenses or general and administrative expenses depending on the function performed by the optionee. No net tax benefits related to the stock-based compensation costs have been recognized since the Company’s inception. The Company recognized stock-based compensation expense as follows for the three ended March 31, 2020 and 2019:

	Three Months ended March 31,
	2020		2019
General and administrative	$	45,000	$	538,000
Research and development	48,000		112,000
	$	93,000	$	650,000

18

Onconova Therapeutics, Inc. 

Notes to Condensed Consolidated Financial Statements (Continued) 

(Unaudited)

8.  Stock-Based Compensation (Continued)

A summary of stock option activity for the three months ended March 31, 2020 is as follows:

			Options Outstanding
	Shares Available for Grant		Number of Shares		Weighted- Average Exercise Price		Weighted Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value
Balance, December 31, 2019	59,731		994,453		$	27.37	9.32	$	0
Authorized	—		—
Granted	(34,750	)	34,750		$	0.303	10.00
Exercised	—		—		$	—
Forfeitures	11,810		(11,810	)	$	29.99	1.77
Balance, March 31, 2020	36,791		1,017,393		$	25.22	9.12	$	0
Vested or expected to vest, March 31, 2020			985,933		$	95.98	7.81	$	0
Exercisable at March 31, 2020			257,495		$	95.98	7.81	$	0

Information with respect to stock options outstanding and exercisable at March 31, 2020 is as follows:

Exercise Price	Shares		Exercisable
$0.30 - $0.31	629,750	6	—
$3.39 – $3.72	51,998		7,000
$4.34 – $7.05	269,913		187,500
$16.35 – $97.50	48,133		45,410
$222.00 - $225.00	1,871		1,871
$348.00 – $597.00	4,867		4,866
$651.00 – $1,129.50	3,616		3,603
$1,992.00 - $2,268.00	6,910		6,910
$4,156.50 - $4,371.00	335		335
	1,017,393		257,495

The Company uses the Black-Scholes option-pricing model to estimate the fair value of stock options at the grant date. The Black-Scholes model requires the Company to make certain estimates and assumptions, including estimating the fair value of the Company’s Common Stock, assumptions related to the expected price volatility of the Common Stock, the period during which the options will be outstanding, the rate of return on risk-free investments and the expected dividend yield for the Company’s stock.

As of March 31, 2020, there was $613,000 of unrecognized compensation expense related to the unvested stock options issued from April 24, 2013 through March 31, 2020, which is expected to be recognized over a weighted-average period of approximately 2.32 years.

19

Onconova Therapeutics, Inc. 

Notes to Condensed Consolidated Financial Statements (Continued) 

(Unaudited)

8.  Stock-Based Compensation (Continued)

The weighted-average assumptions underlying the Black-Scholes calculation of grant date fair value include the following:

	Three Months ended March 31,
	2020			2019
Risk-free interest rate	0.46		%	1.92		%
Expected volatility	105.30		%	82.58		%
Expected term	6.00 years			5.85 years
Expected dividend yield	0		%	0		%
Weighted average grant date fair value	$	0.24		$	1.81

The weighted-average valuation assumptions were determined as follows:

· Risk-free interest rate: The Company based the risk-free interest rate on the interest rate payable on U.S. Treasury securities in effect at the time of grant for a period that is commensurate with the assumed expected option term.

· Expected term of options: Due to its lack of sufficient historical data, the Company estimates the expected life of its employee stock options using the “simplified” method, as prescribed in Staff Accounting Bulletin (SAB) No. 107, whereby the expected life equals the arithmetic average of the vesting term and the original contractual term of the option.

· Expected stock price volatility:  Expected volatility is based on the historical volatility of the Company’s Common Stock since its IPO in July 2013.

· Expected annual dividend yield: The Company has never paid, and does not expect to pay, dividends in the foreseeable future.  Accordingly, the Company assumed an expected dividend yield of 0.0%.

· Expected Forfeiture rate: The Company’s estimated annual forfeiture rate on stock option grants was 4.14% in 2020 and 2019, based on the historical forfeiture experience.

20

Onconova Therapeutics, Inc. 

Notes to Condensed Consolidated Financial Statements (Continued) 

(Unaudited)

9. Research Agreements

The Company has entered into various licensing and right-to-sublicense agreements with educational institutions for the exclusive use of patents and patent applications, as well as any patents that may develop from research being conducted by such educational institutions in the field of anticancer therapy, genes and proteins. Results from this research have been licensed to the Company pursuant to these agreements. Under one of these agreements with Temple University (“Temple”), the Company is required to make annual maintenance payments to Temple and royalty payments based upon a percentage of sales generated from any products covered by the licensed patents, with minimum specified royalty payments. As no sales had been generated through March 31, 2020 under the licensed patents, the Company has not incurred any royalty expenses related to this agreement. In addition, the Company is required to pay Temple a percentage of any sublicensing fees received by the Company.

21

Onconova Therapeutics, Inc.

Notes to Condensed Consolidated Financial Statements (Continued)

(Unaudited)

10. License and Collaboration Agreement

HanX Rigosertib Agreement (terminated)

On May 10, 2019, the Company entered into a License and Collaboration Agreement (the "HanX License Agreement") with HanX and two Securities Purchase Agreements (the "HanX Securities Purchase Agreements"), one with HanX and the other with an affiliate of HanX.

Under the terms of the HanX License Agreement, the Company granted HanX an exclusive, royalty-bearing license, with the right to sublicense, to study and commercialize rigosertib in greater China (the "HanX Territory," including the People's Republic of China, Hong Kong, Macau and Taiwan).

In exchange for these rights, the agreement required HanX to make upfront payments to the Company totaling $4 million, including a $2.0 million upfront fee and an investment totaling $2.0 million to purchase shares of the Company at a premium to market. HanX was also required to dedicate $2.0 million in local currency, to be placed in escrow, for clinical development expenses in the HanX Territory. In addition, the agreement provided for potential payments to the Company for regulatory, development and sales-based milestone payments up to $45.5 million and tiered royalties up to double digits on net sales in in the HanX Territory. The Company would supply rigosertib for sale in the HanX Territory.

The HanX License Agreement also contained certain provisions for termination by either party in the event of breach of the HanX License Agreement by the other party, subject to a cure period, or bankruptcy of the other party.

Under the terms of the HanX Securities Purchase Agreement, HanX and its affiliate agreed to make upfront equity investments in the Company at a specified premium to the Company's share price. The common stock purchased by HanX and its affiliates is subject to certain lock-up restrictions and HanX and its affiliates are entitled to certain registration and participation rights.

The Company assessed the HanX License Agreement for revenue recognition in accordance with ASC 606 and determined that there are two distinct performance obligations: the license and the supply of rigosertib for sale in the HanX Territory. The Company concluded that control of the license had been transferred to HanX during the three months ended June 30, 2019 and recognized license revenue of $1.7 million, which is net of applicable taxes withheld by the Chinese government, related to the $2.0 million upfront fee. The Company believes a portion of the tax being withheld by the Chinese government may be recoverable at a later date and could be recognized as license revenue if and when recovered by the Company. The $1.7 million was recorded as a receivable at June 30, 2019 and the payment was received in August 2019.

Pursuant to the HanX Securities Purchase Agreements, closing of one of the upfront equity investments occurred on May 15, 2019 when an affiliate of HanX purchased 103,520 shares of common stock for $0.5 million. The total amount of the premium was $0.1 million and this amount was recognized as license revenue during the three months ended June 30, 2019. The remaining upfront equity investments represent equity-classified forward contracts for the purchase of the Company's equity at a pre-determined price. The premium of the future equity purchase from HanX as of the contract date of $0.2 million was recognized as license revenue during the three months ended June 30, 2019 and was included in other current assets, pending receipt of payment.

On July 9, 2019, the Company extended the deadline for payments under the HanX License Agreement and the HanX Securities Purchase Agreements. On August 8, 2019 Onconova received the non-refundable license fee from HanX. On August 14, 2019, the Company further extended the deadline of HanX's remaining upfront payments relating to its equity investment in the Company while HanX continued to seek Chinese regulatory approval for such equity investment. In December 2019, the Company reassessed the likelihood of receiving the $0.2 million premium on the equity investment previously recorded as revenue. The Company reversed the $0.2 million revenue in December 2019.

On January 16, 2020, the Company determined HanX did not fulfill its obligations under the License Agreement and, in accordance with the terms of the License Agreement, the License Agreement was deemed to be void ab initio. Upon this termination, the rights to Product in the Territory reverted to the Company in accordance with the terms of the License Agreement. In addition, the Securities Purchase Agreements terminated automatically effective upon the termination of the License Agreement in accordance with the Securities Purchase Agreements.

22

Onconova Therapeutics, Inc.

Notes to Condensed Consolidated Financial Statements (Continued)

(Unaudited)

11. Related-Party Transactions

The Company has entered into a research agreement, as subsequently amended, with the Mount Sinai School of Medicine (“Mount Sinai”), with which a member of its board of directors and a stockholder is affiliated. Mount Sinai is undertaking research on behalf of the Company on the terms set forth in the agreements. Mount Sinai, in collaboration with the Company, will prepare applications for patents generated from the research. Results from all projects will belong exclusively to Mount Sinai, but the Company will have an exclusive option to license any inventions, resulting therefrom. Payments to Mount Sinai under this research agreement for the three months ended March 31, 2020 and 2019 were $124,000 and $88,000, respectively. At March 31, 2020 and December 31, 2019, the Company had $124,000 and $150,000, respectively, payable to Mount Sinai under this agreement.

The Company has entered into a consulting agreement with a member of its board of directors. The board member provides consulting services to the Company on the terms set forth in the agreement. Payments to this board member for both the three months ended March 31, 2020 and 2019 were $33,000. At both March 31, 2020 and December 31, 2019, the Company had $33,000 payable under this agreement.

23

Onconova Therapeutics, Inc. 

Notes to Condensed Consolidated Financial Statements (Continued) 

(Unaudited)

12. Securities Registrations and Sales Agreements

January 2020 Offering

On December 31, 2019, the Company entered into definitive securities purchase agreements with institutional investors for the issuance and sale in a registered direct offering of 27,662,518 shares of the Company's common stock at an offering price of $0.3615 per share.

Pursuant to the December 2019 HCW Engagement Letter, HCW agreed to serve as exclusive placement agent for the offering. In connection with the offering, the Company paid HCW an aggregate cash fee equal to 7.0% of the gross proceeds in the offering, management fee equal to 1.0% of the gross proceeds raised in the offering, $85,000 for non-accountable expenses; and $10,000 for clearing fees. The Company also issued to HCW or its designees placement agent warrant to purchase up to 1,383,126 shares of common stock at an exercise price of $0.4519 per share. The placement agent warrants are immediately exercisable and will expire on December 31, 2023.

The net proceeds to the Company from the offering, after deducting HCW's placement agent fees and expenses and other estimated offering expenses payable by the Company were approximately $9.0 million and were received in January 2020.

The offering was pursuant to a prospectus dated December 28, 2017, and a prospectus supplement dated as of December 31, 2019 to be filed in connection with a takedown from the Company's shelf registration statement on Form S-3 (File No. 333-221684). The offering closed on January 3, 2020.

24

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

The following Management’s Discussion and Analysis of Financial Condition and Results of Operations should be read in conjunction with interim unaudited condensed consolidated financial statements contained in Part I, Item 1 of this quarterly report, and the audited consolidated financial statements and notes thereto for the year ended December 31, 2019 and the related Management’s Discussion and Analysis of Financial Condition and Results of Operations, both of which are contained in our annual report on Form 10-K filed with the SEC on March 27, 2020. As used in this report, unless the context suggests otherwise, “we,” “us,” “our,” “the Company” or “Onconova” refer to Onconova Therapeutics, Inc. and its consolidated subsidiaries.

Cautionary Note Regarding Forward-Looking Statements

This quarterly report on Form 10-Q includes forward-looking statements. We may, in some cases, use terms such as “believes,” “estimates,” “anticipates,” “expects,” “plans,” “intends,” “may,” “could,” “might,” “will,” “should,” “approximately” or other words that convey uncertainty of future events or outcomes to identify these forward-looking statements. Forward-looking statements appear in a number of places throughout this report and include statements regarding our intentions, beliefs, projections, outlook, analyses or current expectations concerning, among other things, our ongoing and planned preclinical development and clinical trials, the timing of and our ability to make regulatory filings and obtain and maintain regulatory approvals for our product candidates, protection of our intellectual property portfolio, the degree of clinical utility of our products, particularly in specific patient populations, our ability to develop commercial and manufacturing functions, expectations regarding clinical trial data, our results of operations, cash needs, financial condition, liquidity, collaborations, partnerships, prospects, growth and strategies, the industry in which we operate and the trends that may affect the industry or us.

By their nature, forward-looking statements involve risks and uncertainties because they relate to events, competitive dynamics and industry change, and depend on the economic circumstances that may or may not occur in the future or may occur on longer or shorter timelines than anticipated. Although we believe that we have a reasonable basis for each forward-looking statement contained in this report, we caution you that forward-looking statements are not guarantees of future performance and that our actual results of operations, financial condition and liquidity, and the development of the industry in which we operate may differ materially from the forward-looking statements contained in this report. In addition, even if our results of operations, financial condition and liquidity, and events in the industry in which we operate are consistent with the forward-looking statements contained in this report, they may not be predictive of results or developments in future periods.

Actual results could differ materially from our forward-looking statements due to a number of factors, including risks related to:

· our need for additional financing for our INSPIRE trial and other operations, and our ability to obtain sufficient funds on acceptable terms when needed, and our plans and future needs to scale back operations if adequate financing is not obtained;

· our ability to continue as a going concern;

· our estimates regarding expenses, future revenues, capital requirements and needs for additional financing;

· the success and timing of our preclinical studies and clinical trials, including site initiation and patient enrollment, and regulatory approval of protocols for future clinical trials;

· our ability to enter into, maintain and perform collaboration agreements with other pharmaceutical companies, for funding and commercialization of our clinical product candidates or preclinical compounds, and our ability to achieve certain milestones under those agreements;

· the difficulties in obtaining and maintaining regulatory approval of our product candidates, and the labeling under any approval we may obtain;

· our plans and ability to develop, manufacture and commercialize our product candidates;

· our failure to recruit or retain key scientific or management personnel or to retain our executive officers;

· the size and growth of the potential markets for our product candidates and our ability to serve those markets;

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· regulatory developments in the United States and foreign countries;

· the rate and degree of market acceptance of any of our product candidates;

· obtaining and maintaining intellectual property protection for our product candidates and our proprietary technology;

· the successful development of our commercialization capabilities, including sales and marketing capabilities;

· recently enacted and future legislation and regulation regarding the healthcare system;

· the success of competing therapies and products that are or become available;

· our ability to maintain the listing of our securities on a national securities exchange;

· the potential for third party disputes and litigation;

· the performance of third parties, including contract research organizations (“CROs”) and third-party manufacturers; and

· the impact of the novel coronavirus disease, COVID-19, to global economy and capital markets, and to our business and our financial results.

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Any forward-looking statements that we make in this report speak only as of the date of such statement, and we undertake no obligation to update such statements to reflect events or circumstances after the date of this report or to reflect the occurrence of unanticipated events. Comparisons of results for current and any prior periods are not intended to express any future trends or indications of future performance, unless expressed as such, and should only be viewed as historical data.

You should also read carefully the factors described in the “Risk Factors” in our most recent annual report on Form 10-K and in this report, to better understand significant risks and uncertainties inherent in our business and underlying any forward-looking statements. As a result of these factors, actual results could differ materially and adversely from those anticipated or implied in the forward-looking statements in this report and you should not place undue reliance on any forward-looking statements.

Overview

We are a clinical-stage biopharmaceutical company focused on discovering and developing novel small molecule product candidates primarily to treat cancer. We have proprietary targeted agents designed to work against cellular pathways important to cancer cells. We believe that the product candidates in our pipeline have the potential to be efficacious in a variety of cancers. We have one Phase 3 clinical-stage product candidate and two other clinical-stage product candidates (one of which has been studied for treatment of acute radiation syndromes) and preclinical programs. Our current efforts are focused on our lead product candidate, rigosertib. Rigosertib has been tested in an intravenous formulation as a single agent for patients with higher-risk myelodysplastic syndromes ("MDS"), and an oral formulation as a single agent in lower risk MDS or in combination with azacitidine for patients with higher-risk MDS.

In December 2015, we enrolled the first patient into our INSPIRE trial, a randomized controlled Phase 3 clinical trial of intravenous rigosertib ("rigosertib IV") in a population of patients with higher-risk MDS after failure of hypomethylating agent ("HMA") therapy. The primary endpoint of INSPIRE is improvement in overall survival. An interim analysis of the trial was performed in January 2018. We completed enrollment of the required 360 randomized patients in March 2020. As of March 31, 2020, more than 85% of the required death events have been reported. Based on survival events and trends to date, we anticipate reporting topline survival data in the second half of 2020, following at least 288 confirmed death events.

Our net losses were $5.1 million and $7.6 million for the three months ended March 31, 2020 and 2019, respectively. As of March 31, 2020, we had an accumulated deficit of $408.5 million. We expect to incur significant expenses and operating losses for the foreseeable future as we continue the development and clinical trials of, and seek regulatory approval for, our product candidates, even if milestones under our license and collaboration agreements may be met. As of March 31, 2020, we had $31.0 million in cash and cash equivalents.

In September 2019 we closed on an offering common stock to certain investors. We issued 2,198,938 shares of common stock and amended warrants for the purchase of 2,198,938 shares of common stock. The investors, who were also holders of our preferred stock warrants issued in February 2018 and/or May 2018, received a warrant amendment under which a certain number of such investors' preferred stock warrants received a reduction in exercise price and an extension of term. Net proceeds from the sale of common stock and the amendment of preferred stock warrants were approximately $3.3 million. In November 2019, we closed on an offering of units of common stock and warrants. We issued 30,250,000 shares of common stock, pre-funded warrants to purchase 24,750,000 shares of common stock, and common stock warrants to purchase 55,000,000 shares of common stock. Net proceeds were approximately $9.7 million. On December 10, 2019, we closed on an offering of units of common stock and warrants. We issued 14,326,648 shares of common stock and common stock warrants to purchase 7,163,324 shares of common stock. Net proceeds were approximately $4.4 million. On December 19, 2019, we closed on an offering of units of common stock and warrants. We issued 13,878,864 shares of common stock and common stock warrants to purchase 6,939,432 shares of common stock. Net proceeds were approximately $4.4 million. During 2019, pre-funded warrants were exercised for 23,720,784 shares of common stock and net proceeds were $35,000. Also during 2019, common warrants were exercised for 21,014,378 shares of common stock and net proceeds were approximately $4.9 million.

In January 2020, we closed on an offering of common stock. We issued 27,662,518 shares of common stock and net proceeds were approximately $9.0 million. From December 31, 2019 to March 31, 2020; 28,586,200 warrants from our November 2019 offering have been exercised, resulting in proceeds of $5.7 million.

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In May 2019, we and HanX entered into the HanX License Agreement. Under the terms of the HanX License Agreement, we granted HanX an exclusive, royalty-bearing license, with the right to sublicense, under certain Company patent rights and know-how to develop and commercialize any pharmaceutical product containing rigosertib in all uses of rigosertib or the Product in humans therapeutics uses in the People's Republic of China, Hong Kong, Macau and Taiwan (the "Territory"). In connection with the HanX License Agreement, we also entered into the HanX Securities Purchase Agreement with each of HanX and its affiliate Abundant. HanX did not fulfill its obligations under the HanX License Agreement and effective January 16, 2020, in accordance with the terms of the HanX License Agreement, the HanX License Agreement was deemed to be void ab initio. Upon this termination, the rights to HanX Licensed Product in the HanX Territory reverted to us in accordance with the terms of the HanX License Agreement. In addition, the HanX Securities Purchase Agreements terminated automatically effective January 16, 2020 upon the termination of the License Agreement in accordance with the HanX Securities Purchase Agreements.

In November 2019, we and Knight entered into the Knight License Agreement. Under the terms of the Knight License Agreement, we granted Knight (i) a non-exclusive, royalty-bearing license, with the right to sublicense, under certain Company patent rights and know-how to develop and manufacture any product containing rigosertib for Canada (and Israel should Knight exercise its option) and in human uses , and (ii) an exclusive, royalty-bearing license, with the right to sublicense, under certain Company patent rights and know-how to commercialize the Knight Licensed Product in the Knight Territory and in the Knight Licensed Field. Knight made an upfront payment of $100,000 and we are eligible to receive clinical, regulatory and sale-based milestone payments up to CAD 33.95 million. We are also eligible to receive tiered double-digit royalties based on net sales in the Territory. The Knight License Agreement also contains customary provisions for termination by either party in the event of breach of the Knight License Agreement by the other party, subject to a cure period, or bankruptcy of the other party.

In December 2019, we and STA entered into the STA License Agreement. Under the terms of the STA License Agreement, we granted STA (i) a non-exclusive, royalty-bearing license, with the right to sublicense, under certain Company patent rights and know-how to develop and manufacture any product containing rigosertib for Australia and New Zealand and in human uses, and (ii) an exclusive, royalty-bearing license, with the right to sublicense, under certain Company patent rights and know-how to commercialize the STA Licensed Product in the STA Territory and in the STA Licensed Field. STA made an upfront payment of $50,000 and we may be entitled to receive clinical, regulatory and sale-based milestone payments up to $30.55 million. We may also be entitled to receive tiered double-digit royalties based on net sales in the STA Licensed Territory. The STA License Agreement also contains customary provisions for termination by either party in the event of breach of the STA License Agreement by the other party, subject to a cure period, or bankruptcy of the other party.

We believe that our cash and cash equivalents of $31.0 million, at March 31, 2020, will be sufficient to fund our operations and ongoing trials into the third quarter of 2021. We do not have a recurring source of revenue to fund our operations and will need to raise additional funds to continue to develop and apply for regulatory approval for our drug candidates.

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We are exploring various sources of funding for development and applying for regulatory approval of rigosertib as well as for our ongoing operations. If we raise additional funds through strategic collaborations and alliances or licensing arrangements with third parties, which may include existing collaboration partners, we may have to relinquish valuable rights to our technologies or product candidates, including rigosertib, or grant licenses on terms that are not favorable to us. There can be no assurance, however, that we will be successful in obtaining such financing in sufficient amounts, on terms acceptable to us, or at all.  In addition, there can be no assurance that we will obtain approvals necessary to market our product candidates or achieve profitability or sustainable, positive cash flow. If we are unable to successfully raise sufficient additional capital, through future financings or through strategic and collaborative arrangements, we will not have sufficient cash to fund our ongoing trials and operations.

Rigosertib

Rigosertib is a small molecule which we believe, as reported in the journal Cell (Athuluri-Divakar et al., 2016, Cell 165, 643—655), blocks cellular signaling by targeting RAS effector pathways. This is believed to be mediated by the interaction of rigosertib to the RAS-binding domain ("RBD"), found in many RAS effector proteins, including the Raf and PI3K kinases. This mechanism of action potentially provides a new approach to block the interactions between RAS and its targets containing RBD sites. Rigosertib is currently being tested in clinical trials as a single agent, and continues to be evaluated in combination with azacitidine, in patients with MDS. We have enrolled more than 1,300 patients in rigosertib clinical trials for MDS and other conditions. We are party to a collaboration agreement with SymBio, which grants SymBio certain rights to commercialize rigosertib in Japan and Korea. We are also party to several license agreements which grant certain rights to commercialize rigosertib in other countries: Pint Pharma International SA ("Pint") for certain countries in Latin America, Knight Therapeutics, Inc. ("Knight") for Canada and Specialised Therapeutics Asia Pte. Ltd. ("STA") for Australia and New Zealand. We have retained development and commercialization rights to rigosertib in the rest of the world, including in the United States and Europe, although we could consider licensing commercialization rights to other territories as we continue to seek additional funding.

The table below summarizes rigosertib programs.

Disease	Formulation	Indication	Stage	Expected Timelines*	Potential Market Opportunity (US)/Benefit
			Onconova Initiated Studies
MDS	Intravenous	HR - following HMA failure	Phase 3 -Interim analysis completed -Enrollment completed	Reporting of survival top-line data 2H 2020	~ 5,000 patients	No directly competing FDA approved product in the market
	Oral - in combination with AZA	HR - prior to HMAs	Phase 2/3	-Outcome of September 2019 FDA meeting is that the Company expects to proceed with a Phase 2/3 plecebo controlled randomized trial, following topline reporting of INSPIRE trial.	~ 18,000	No oral NCE approved since 2005
	Oral	Lower Risk	Phase 2	Continue to evaluate target patient population in 2020.	> 10,000	Longer potential duration of treatment
			Investigator Initiated Studies - RAS Mutated Cancers
Squamous cell carcinoma	Intravenous and oral	Recessive Dystrophic Epidermolysis bullosa (RDEB) with Advanced Squamous Cell Carcinoma (SCC)	Phase 2	2H 2020 - 2H 2021
Non-small cell lung cancer	Oral - in combination with nivolumab	Stage IV Lung Adenocarcinoma Patients with KRAS Mutation	Phase 1	Q2 2020 - Q4 2021
			Other
RASopathies	Intravenous and oral	JMML/other RAS Cancer Pathway diseases	Preclinical	-Preclinical NIH studies completed	Rare disease	Pediatric clinical trial
* We are attempting to mitigate the effects on our study timelines of the COVID 19 pandemic. All of our studies have been impacted to differing extents.

Rigosertib IV for higher-risk MDS

We are developing the IV formulation of rigosertib for the treatment of higher-risk MDS following the failure of HMA therapy. In early 2014, we announced topline survival results from our "ONTIME" trial, a multi-center Phase 3 clinical trial of rigosertib IV as a single agent versus best supportive care including low dose Ara-C. The ONTIME trial did not meet its primary endpoint of an improvement in overall survival in the intent-to-treat population, although improvements in median overall survival were observed in various pre-specified and exploratory subgroups of higher-risk MDS patients. As a result of these analyses, the pivotal INSPIRE trial is an on-going study in what we believe is a more homogenous population in higher-risk MDS.

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During 2014 and 2015, we held meetings with the U.S. Food and Drug Administration ("FDA"), European Medicines Agency ("EMA"), and several European national regulatory authorities to discuss and seek guidance on a path for approval of rigosertib IV in higher-risk MDS patients whose disease had failed HMA therapy. After discussions with the FDA and EMA, we refined our patient eligibility criteria by defining what we believe is a more homogenous higher-risk patient population. After regulatory feedback, input from key opinion leaders in the U.S. and Europe and based on learnings from the ONTIME study, we designed a new randomized controlled Phase 3 trial, referred to as INSPIRE. The INSPIRE trial is enrolling higher-risk MDS patients under 82 years of age who have progressed on, relapsed, or failed to respond to, previous treatment with HMAs within nine months or nine cycles over the course of one year after initiation of HMA therapy, and had their last dose of HMA within six months prior to enrollment in the trial. Patients are randomized to either rigosertib with best supportive care, or the physician's choice of therapy with best supportive care. The primary endpoint of this study is the sequential analysis of overall survival of all randomized patients in the intent-to-treat ("ITT") population and the International Prognostic Scoring System- Revised (IPSS-R) Very High Risk ("VHR") subgroup. The first patient in the INSPIRE trial was enrolled in the United States in December 2015, the first patient in Europe was enrolled in March, 2016, and the first patient in Japan was enrolled in July, 2016.

Enrollment for the INSPIRE Phase 3 trial for second-line higher-risk MDS patients is highly selective with stringent entry criteria as outlined above. The INSPIRE study included more than 140 trial sites which enrolled patients, including sites in Japan coordinated by our partner, SymBio Pharmaceuticals. The selection of countries and trial sites was carefully undertaken to ensure availability of appropriate patients meeting eligibility criteria. Since these criteria are purposely designed to be narrow and selective, extensive site screening and education is integral to our plan.

The INSPIRE trial included a pre-planned interim analysis triggered by 88 events (deaths), which occurred in December 2017. The statistical analysis plan ("SAP") for the INSPIRE trial featured an adaptive trial design, permitting several options following the interim analysis, which included continuation of the trial as planned, discontinuation of the trial for futility or safety, trial expansion using pre-planned sample size re-estimation, or trial continuation for only the pre-defined treatment subgroup of patients classified as VHR based on the IPSS-R.

After review of the interim data, in January 2018 the Independent Data Monitoring Committee ("DMC") recommended continuation of the trial with a one-time expansion in enrollment, using a pre-planned sample size re-estimation, as determined by the SAP. As recommended by the DMC, the expanded INSPIRE study continued to enroll eligible patients based on the trial criteria of the overall ITT population and increased enrollment by adding 135 patients to the original target to reach a total expected enrollment of 360 patients. The targeted number of death events required for analyzing the results of the trial was increased from 176 to 288 events. Due to the adaptive trial design and the DMC's assessment of the interim data, the INSPIRE trial will continue to sequentially analyze the ITT and the VHR population for the primary endpoint of overall survival. The design of the trial with the expanded study enrollment is identical to the initial study design and includes the sequential analysis of the overall survival endpoint in the ITT population and if required the pre-specified VHR subgroup. The Company remains blinded to the interim analysis results. Following the interim analysis, we expanded the INSPIRE Phase 3 trial to new sites in previously participating countries and into new geographical regions. We completed enrollment of the required 360 randomized patients in March 2020. As of March 2020, more than 85% of the required death events have been reported. Based on survival events and trends to date, we anticipate reporting topline survival data in the second half of 2020, following at least 288 confirmed death events, and presenting the full results at a major medical meeting later in 2020.

Safety and Tolerability of rigosertib in MDS and other hematologic malignancies

A comprehensive analysis of rigosertib IV and rigosertib oral safety in patients with Myelodysplastic Syndromes (MDS) and Acute Myeloid Leukemia (AML) was presented in December 2016 at the American Society of Hematology (ASH) Annual Meeting. The most commonly reported treatment-emergent adverse events (TEAEs) in > 10% of patients with MDS/AML (n= 335) receiving rigosertib intravenous (IV) monotherapy were fatigue (33%), nausea (33%), diarrhea (27%), constipation (25%), anaemia (24%) and pyrexia (24%). The most common > Grade 3 AEs were anaemia (21%), febrile neutropenia (13%), pneumonia (12%) and thrombocytopenia (11%). The most common serious AEs were febrile neutropenia (10%), pneumonia (9%), and sepsis (7%). The most common AEs leading to discontinuation of IV rigosertib were sepsis and pneumonia (3% each).

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Rigosertib oral in combination with azacitidine for higher-risk MDS

We are developing rigosertib oral for use in combination with IV azacitidine prior to treatment with HMA therapy for higher risk MDS. We presented updated information regarding our Phase 2 trial with an abstract and oral presentation at the ASH Annual Meeting in December 2019. The focus of this presentation was on patients diagnosed with HMA-naïve, HR MDS. In December 2018, at the American Society of Hematology (ASH) Annual Meeting and in June 2019, at the Congress of the European Hematology Association Meeting (EHA), we presented results from a Phase 1/2, multi-institutional trial of data from the initial portion of an ongoing rigosertib oral and azacitidine combination trial in higher-risk MDS. 55 of 74 HR-MDS patients enrolled and treated with > 840 mg/day oral rigosertib were evaluable for response at the time of the analysis. An Overall Response Rate (ORR) of 90% and Complete Remission (CR) rate (primary endpoint) of 34% was reported in this multi-institutional Phase 1/2 study in HMA naïve patients. HMA naïve patients are patients that had not previously received either azacitidine or decitabine. Such patients were not necessarily treatment naïve patents in that they may have received other therapies used for MDS. An ORR of 54% and CR/Partial Response (PR) of 8% in HMA failed patients was also reported.

The median age of patients was 69, with 59% being male and 41% being female. The IPSS-R distribution was: 7.5% Low, 12.5% Intermediate, 37.5% High, 32.5% Very High and 10% unknown. 76% of patients responded per 2006 International Working Group (IWG) criteria. Responses were as follows:

	Overall			No prior			Prior HMA
	Evaluable			HMA			(failures)
	(N=55)			(N=29)			(N=26)
Complete remission (CR)		11	(20)%		10	(34)%		1	(4)%
Marrow CR + hematologic improvement		10	(18)%		5	(17)%		5	(19)%
Marrow CR alone		13	(24)%		8	(28)%		5	(19)%
Hematologic improvement alone		5	(9)%		3	(10)%		2	(8)%
Stable disease		10	(18)%		3	(10)%		7	(27)%
Overall IWG response		40	(73)%		26	(90)%		14	(54)%

The median duration of response for patients with HMA naïve MDS was 12.2 months

The median time to initial/best response for HMA naïve patients, was 1 cycle and 4 cycles, respectively

The median duration of response for the HMA failed patients was 10.8 months

The median time to initial/best response for patients with HMA failure MDS, was 2 cycles and 5 cycles of treatment, respectively

Safety/Tolerability of the Combination:

Based upon safety results from a comprehensive analysis of patients (HMA-failure and HMA-naïve) receiving oral rigosertib in combination with azacitidine that was presented during ASH in 2018, the combination of rigosertib oral (> 840 mg/day) and azacitidine was well tolerated. The most common TEAEs in > 30% of patients with MDS/AML (n=74) receiving rigosertib oral and azacitidine were hematuria (45%), constipation (43%), diarrhea (42%), fatigue (42%), dysuria (38%) , pyrexia (36%), nausea (35%), neutropenia (31%) thrombocytopenia (30%) .fatigue (39%), diarrhea (37%), constipation (37%) and dysuria (28%). The most common serious AEs were pneumonia (11%) and febrile neutropenia (7%). The most common AEs leading to discontinuation were AML (4%) and pneumonia (4%).

Results of the specific safety subset of patients with HMA-treatment naïve (n=39) that received oral rigosertib in combination with azacitidine were presented at the 2019 ASH conference. Overall, the safety results were similar for this subset of patients compared to those described above. The most common all grade TEAEs in > 30% of patients with HMA-naïve, HR MDS receiving oral rigosertib and azacitidine were hematuria (51%), fatigue (49%), pyrexia (44%), diarrhea (41%), nausea (38%), constipation (36%), dysuria (36%), neutropenia (36%) and thrombocytopenia (36%).

Next steps for rigosertib oral in combination with azacitidine for higher-risk MDS

In September 2019 we had a Type A meeting with the FDA to discuss the SPA and protocol development for the Company's pivotal Phase 3 Trial for the combination of oral rigosertib and azacitidine in HMA naïve higher risk MDS. The FDA recommended that, if we plan to further study the combination of oral rigosertib in combination with azacitidine, we next conduct a dose-ranging study with an azacitidine control arm in order to identify an appropriate dose and to determine the contribution of rigosertib in the combination. We continue to evaluate the FDA's comments and, expect to submit to the FDA a protocol for a dose-finding Phase 2/3 Study of the combination with a control arm of azacitidine. The Company does not plan to commence the new Phase 2/3 study until after completion of the INSPIRE trial and additional funding is received.

In June 2017, at the Congress of the European Hematology Association Meeting, we updated the data from the Phase 1/2 trial and highlighted results in AML patients included in this study. Response data was presented on eight evaluable patients with AML who were tested with the rigosertib and azacitidine combination. For the eight evaluable patients with AML, the combination was well tolerated, and the safety profile was similar to single-agent azacitidine, based on safety information in the azacitidine FDA approved label. Based on the presented results of the combination studies, the authors concluded that continued study in AML was warranted. We do not currently plan to commence further development of rigosertib oral in combination with azacitidine for AML without additional financing.

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Rigosertib oral for lower-risk MDS

We have studied rigosertib oral as a single agent treatment for lower risk MDS. Higher-risk MDS patients suffer from a shortfall in normal circulating blood cells, or cytopenias, as well as elevated levels of cancer cells, or blasts in their bone marrow and sometimes in their peripheral blood with a significant rate of transformation to acute leukemia. Lower-risk MDS patients suffer mainly from cytopenias, that is low levels of red blood cells, white blood cells or platelets. Thus, lower-risk MDS patients depend on transfusions and growth factors or other therapies to improve their low blood counts; but have a lower rate of acute leukemic transformation.

We have explored single agent rigosertib oral as a treatment for lower-risk MDS in two Phase 2 clinical trials, 09-05 and 09-07. In December 2017, we presented data at the Annual ASH Meeting from the 09-05 Phase 2 trial. We believe this data demonstrated a 44% rate of achieving transfusion independence in the cohort of Lower-risk MDS patients treated with rigosertib oral at a dose of 560 mg BID (1120 mg over 24 hrs) two out of three weeks. We believe clinical data has indicated that further study of single agent rigosertib oral in transfusion-dependent, lower-risk MDS patients is warranted. Rigosertib has been generally well tolerated. Previously reported genitourinary side effects have been mitigated by optimizing the dosing scheme and oral hydration (ASH 2018). Future clinical trials will be needed to evaluate dosing and schedule modifications and their impact on efficacy and safety results of rigosertib oral in lower-risk MDS patients.

Data presented from the 09-05 trial also suggested the potential of a genomic methylation assessment of bone marrow cells to prospectively identify lower-risk MDS patients likely to respond to rigosertib oral. We therefore expanded the 09-05 trial by adding an additional cohort of 20 patients to advance the development of this genomic methylation test. To date, a biomarker which would predict response has not been identified. Further testing and development of rigosertib oral for lower-risk MDS will be required. We do not currently plan to commence further development of rigosertib oral for lower-risk MDS without additional financing.

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Safety and Tolerability of rigosertib oral in MDS and other hematologic malignancies

Rigosertib oral as monotherapy was evaluated in four Onconova Phase 1 and 2 studies in MDS and other hematologic malignancies. In studies of oral rigosertib as monotherapy for the treatment of MDS and other hematologic malignancies:

• Drug-related TEAEs that were > Grade 3 in severity occurred in 21% of patients. The most frequently reported (> 2% of patients) drug-related TEAEs that were > Grade 3 were neutropenia (7%); thrombocytopenia and cystitis (3% each); and leukopenia, dysuria, and hematuria (2% each).

• Among the 8% of patients with SAEs that were considered drug related, the events were mostly urinary related. The most frequent drug-related SAE was cystitis (3%).

In addition to the above described clinical trials, we are continuing the preclinical and chemistry, manufacturing, and control work for IV and rigosertib oral.

Rare Disease Program in "RASopathies"

Based on the mechanism of action data published in the journal Cell in 2016, we have initiated a collaborative development program focusing on a group of rare diseases with a well-defined molecular basis in expression or defects involving the Ras Effector Pathways. Since "RASopathies" are rare diseases affecting young children, we embarked on a multifaceted collaborative program involving patient advocacy, government and academic organizations. The RASopathies are a group of rare diseases which share a well-defined molecular basis in expression or defects involving Ras Effector Pathways. They are usually caused by germline mutations in genes that alter the RAS subfamily and mitogen-activated protein kinases that control signal transduction, and are among the most common genetic syndromes. Together, this group of diseases can impact more than 1 in 1000 individuals, according to RASopathiesNet.

In January 2018, we entered into a Cooperative Research and Development Agreement (CRADA) with the National Cancer Institute (NCI), part of the National Institutes of Health (NIH). Under the terms of the CRADA, the NCI initiated and conducted preclinical laboratory studies on rigosertib in pediatric cancer associated RASopathies. As part of the CRADA, we provided rigosertib supplies and initial funding towards the non-clinical studies. The NCI has conducted PK/PD and dose escalation studies in preclinical models of rhabdomyosarcoma.

In addition, pre-clinical studies were conducted at the University of California San Francisco and funded through the Leukemia Lymphoma Society. The focus was on Juvenile Myelomonocytic Leukemia (JMML), a well-described RASopathy affecting children which is incurable without an allogenic hematopoietic stem cell transplant.

Investigator Initiated Programs

We are currently supporting investigator-initiated studies that are exploring the use of rigosertib for other cancers driven by mutated Ras genes, including a Phase 1 study of rigosertib in combination with a PD-1 inhibitor for patients with progressive K-Ras mutated non-small cell lung cancer. The investigator opened an Investigational New Drug application with the FDA and the trial also has received local IRB approval. Currently enrollment into this study is temporarily on hold due to COVID-19 pandemic. We also anticipate an investigator-initiated study related to rigosertib in combination with a PD-1 inhibitor for K-Ras mutated metastatic melanoma.

Other Programs

CDK 4/6 + ARK5 Inhibitor (ON123300)

In December 2017, we entered into a license and collaboration agreement with HanX, a company focused on development of novel oncology products, for the further development, registration and commercialization in China of ON 123300. We believe this compound has the potential to overcome the limitations of current generation CDK 4/6 inhibitors. Under the terms of the agreement, we received an upfront payment, and will receive regulatory and commercial milestone payments, as well as royalties on Chinese sales. The key feature of the collaboration is that HanX provides all funding required for Chinese IND enabling studies performed for the Chinese Food and Drug Administration (Chinese FDA) IND approval. In the fourth quarter of 2019, HanX filed an IND with the Chinese FDA. The Chinese IND was approved in January 2020. We and HanX also intended for these studies to comply with the FDA standards. Accordingly, such studies may be used by us for an IND filing with the FDA. We plan to file a US IND related to ON 123300 after obtaining the required manufacturing data. The cGMP manufacturer for ON 123300 has been identified and qualified. It is anticipated that the cGMP API would be available in 4-6 months. Subsequently, the drug product will be manufactured with an anticipated filing of a US IND in Q4 of 2020. We maintain global rights outside of China.

Positive preclinical data was announced at the American Association for Cancer Research (AACR) annual meeting, which took place April 1-5, 2017 in Washington, DC, for ON 123300, a first-in-class dual inhibitor of CDK4/6 + ARK5. We believe our CDK inhibitor is differentiated from other agents in the market (palbociclib, ribociclib and abemaciclib) or in development by its dual inhibition of CDK4/6 + ARK5.

In a preclinical Rb+ve xenograft model for breast cancer, ON 123300 activity was shown to be similar to palbociclib (Pfizer's Ibrance ®). Moreover, based on the same preclinical model, ON 123300 may have the potential advantage of reduced neutropenia when compared to palbociclib. Whereas both compounds resulted in decreased RBC and platelet counts in this preclinical model system, palbociclib was found to have a more prominent and statistically significant (P< 0.05) inhibitory effect on neutrophil counts when compared to ON 123300.

Briciclib

Briciclib, another of our product candidates, is a small molecule targeting an important intracellular regulatory protein, Cyclin D1, which is often found at elevated levels in cancer cells. Cyclin D1 expression is regulated through a process termed cap-dependent translation, which requires the function of eukaryotic initiation factor 4E protein. In vitro evidence indicates briciclib binds to eukaryotic initiation factor 4E protein, blocking cap-dependent translation of Cyclin D1 and other cancer proteins, such as c-MYC, leading to tumor cell death. We have been conducting a Phase 1 multi-site dose-escalation trial of briciclib in patients with advanced solid tumors refractory to current therapies. Safety and efficacy assessments are complete in six of the seven dose-escalation cohorts of patients in this trial. As of December 2015, the Investigational New Drug ("IND") for briciclib is on full clinical hold following a drug product lot testing failure. We will be required to undertake appropriate remedial actions prior to re-initiating the clinical trial and completing the final dose-escalation cohort.

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Recilisib

Recilisib is a product candidate being developed in collaboration with the U.S. Department of Defense for acute radiation syndromes. We have completed four Phase 1 trials to evaluate the safety and pharmacokinetics of recilisib in healthy human adult subjects using both subcutaneous and oral formulations. We have also conducted animal studies and clinical trials of recilisib under the FDA's Animal Rule, which permits marketing approval for new medical countermeasures for which conventional human efficacy studies are not feasible or ethical, by relying on evidence from adequate and well-controlled studies in appropriate animal models to support efficacy in humans when the results of those studies establish that the drug is reasonably likely to produce a human clinical benefit. Human safety data, however, is still required. Ongoing studies of recilisib, focusing on animal models and biomarker development to assess the efficacy of recilisib were conducted by third parties with government funding. We anticipate that any future development of recilisib beyond these studies would be conducted solely with government funding or by collaboration. Use of government funds to finance the research and development in whole or in part means any future effort to commercialize recilisib will be subject to federal laws and regulations on U.S. government rights in intellectual property. Additionally, we are subject to laws and regulations governing any research contracts, grants, or cooperative agreements under which government funding was provided.

Some of our studies are ongoing and results may change as data becomes available.

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Critical Accounting Policies and Significant Judgments and Estimates

This management’s discussion and analysis of our financial condition and results of operations is based on our interim unaudited consolidated financial statements, which have been prepared in accordance with GAAP. The preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses and the disclosure of contingent assets and liabilities in our consolidated financial statements. On an ongoing basis, we evaluate our estimates and judgments, including those related to accrued expenses, revenue recognition, deferred revenue and stock-based compensation. We base our estimates on historical experience, known trends and events and various other factors that we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.  We believe there have been no significant changes in our critical accounting policies as discussed in our annual report on Form 10-K filed with the SEC on March 27, 2020.

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Results of Operations

Comparison of the Three Months Ended March 31, 2020 and 2019

	Three Months ended March 31,
	2020			2019			Change
Revenue	$	52,000		$	68,000		$	(16,000	)
Operating expenses:
General and administrative		1,807,000			3,234,000			1,427,000
Research and development		3,370,000			4,075,000			705,000
Total operating expenses		5,177,000			7,309,000			2,132,000
Loss from operations		(5,125,000	)		(7,241,000	)		2,116,000
Change in fair value of warrant liability		(63,000	)		(427,000	)		364,000
Other income (expense), net		96,000			68,000			28,000
Net loss	$	(5,092,000	)	$	(7,600,000	)	$	2,508,000

Revenues

Revenues decreased by $16,000, or 24%, for the three months ended March 31, 2020 when compared to the same period in 2019 because of less clinical supply revenue from SymBio in the 2020 period.

General and administrative expenses

General and administrative expenses decreased by $1.4 million, or 44%, to $1.8 million for the three months ended March 31, 2020 from $3.2 million for the three months ended March 31, 2019. The decrease was attributable primarily to $1.1 million of severance and $0.5 million of stock compensation expense resulting from our reduction in work force during the 2019 period. These decreases were partially offset by $0.2 million of consulting expenses in the 2020 period related to information technology support and pre-commercialization advisors.

Research and development expenses

Research and development expenses decreased by $0.7 million, or 13%, to $3.4 million for the three months ended March 31, 2020 from $4.1 million for the three months ended March 31, 2019. This decrease was caused primarily by $0.1 million lower clinical development and consulting expenses on the combination program in the 2019 period, and also by $0.6 million lower personnel and stock compensation expense during the 2020 period, following the reduction in work force completed in the first quarter of 2019.

Change in fair value of warrant liability

The fair value of the warrant liability increased $63,000 for the three months ended March 31, 2020, compared to an increase of $0.4 million for the three months ended March 31, 2019. This change was caused by a smaller increase in the 2020 period of the fair market value of the warrants issued in our rights offering in 2016.

Other income (expense), net

Other income (expense), net, was $96,000 for the three months ended March 31, 2020 and $68,000 for the three months ended March 31, 2019.  The change of $28,000 was due to higher interest income in the 2020 period due to higher cash balances.

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Liquidity and Capital Resources

Since our inception, we have incurred net losses and experienced negative cash flows from our operations. We incurred net losses of $5.1 million and $7.6 million for the three months ended March 31, 2020 and 2019, respectively.  Our operating activities used $6.5 million and $6.6 million of net cash during the three months ended March 31, 2020 and 2019, respectively. At March 31, 2020, we had an accumulated deficit of $408.5 million, working capital of $25.0 million, and cash and cash equivalents of $31.0 million. We believe that our cash and cash equivalents as of March 31, 2019, will be sufficient to fund our operations and ongoing trials late into the third quarter of 2021.

Cash Flows

The following table summarizes our cash flows for the three months ended March 31, 2020 and 2019:

	Three Months Ended March 31,
	2020			2019
Net cash (used in) provided by:
Operating activities	$	(6,463,000	)	$	(6,601,000	)
Investing activities		—			—
Financing activities		14,779,000			33,000
Effect of foreign currency translation		(6,000	)		(6,000	)
Net increase (decrease) in cash and cash equivalents	$	8,310,000		$	(6,574,000	)

Net cash used in operating activities

Net cash used in operating activities was $6.5 million for the three months ended March 31, 2020 and consisted primarily of a net loss of $5.1 million, including an increase in the fair value of warrant liability of $63,000, and $0.1 million of both noncash stock-based compensation and depreciation expense. Changes in operating assets and liabilities resulted in a net decrease in cash of $1.5 million. Significant changes in operating assets and liabilities included an increase in prepaid expenses and other current assets of $0.1 million, a decrease in accounts payable and accrued liabilities of $1.3 million due to timing of invoices and payments to our vendors, and a decrease in deferred revenue of $0.1 million due to recognition of the unamortized portion of the upfront payment under our collaboration agreement with SymBio.

Net cash used in operating activities was $6.6 million for the three months ended March 31, 2019 and consisted primarily of a net loss of $7.6 million, including an increase in fair value of warrant liability of $0.4 million, and $0.7 million of noncash stock-based compensation and depreciation expense. Changes in operating assets and liabilities resulted in a net decrease in cash of $0.1 million. Significant changes in operating assets and liabilities included a decrease in deferred revenue of $0.1 million due to recognition of the unamortized portion of the upfront payment under our collaboration agreement with SymBio.

Net cash used in investing activities

There was no cash used in investing activities during the three months ended March 31, 2020 and 2019.

Net cash provided by financing activities

Net cash provided by financing activities was $14.8 million and $33,000 for the three months ended March 31, 2020 and 2019, respectively.  The net cash provided by financing activities in the 2020 period resulted from proceeds received from the sales of common stock and warrants and the exercise of warrants. The net cash provided by financing activities in the 2019 period resulted from the exercise of warrants.

37

Operating and Capital Expenditure Requirements

We believe that our cash and cash equivalents of $31.0 million, at March 31, 2020, will be sufficient to fund our operations and ongoing trials into the third quarter of 2021. We have not achieved profitability since our inception and we expect to continue to incur net losses for the foreseeable future. We expect our net cash expenditures in 2020 to be comparable to 2019. We will incur substantial costs beyond the present and planned clinical trials to file a New Drug Application (NDA) for rigosertib. The nature, design, size, and cost of further studies will depend in large part on the outcome of preceding studies and discussions with regulators.

We continue to explore various dilutive and non-dilutive sources of funding, including equity and debt financings, strategic alliances, business development and other sources. If we are unable to raise additional capital on terms acceptable to us, we may not be able to continue as a going concern and may be forced to curtail all of our activities and, ultimately, potentially cease operations. If we are unable to raise sufficient additional funding, we may not have sufficient cash flows and liquidity to fund our planned business operations, and may be forced to limit many, if not all, of our programs and consider other means of creating value for our stockholders, such as licensing to others the development and commercialization of products that we consider valuable and would otherwise likely develop ourselves. Even if we are able to raise additional capital, such financings may only be available on unattractive terms, or could result in significant dilution of stockholders’ interests.

For additional risks, please see “Risk Factors” in Part II of this report and in previously disclosed in our most recent annual report on Form 10-K.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

As a smaller reporting company, the Company is not required to provide the information otherwise required by this Item.

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Item 4. Controls and Procedures

Managements’ Evaluation of our Disclosure Controls and Procedures

Our management, with the participation of our principal executive and principal financial officers, evaluated the effectiveness of our disclosure controls and procedures as of March 31, 2020. The term “disclosure controls and procedures,” as defined in Rules 13a-15(e) and 15d-15(e) promulgated under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), means controls and other procedures of a company that are designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the SEC’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is accumulated and communicated to the company’s management, including its principal executive and principal financial officers, as appropriate to allow timely decisions regarding required disclosure. Based on the evaluation of our disclosure controls and procedures as of March 31, 2020, our principal executive and principal financial officers concluded that, as of such date, our disclosure controls and procedures were effective.

Changes in Internal Control Over Financial Reporting

Our management, with the participation of our principal executive and principal financial officers, evaluated any changes in our internal control over financial reporting (as such term is defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) that occurred during our most recently completed fiscal quarter. Based on that evaluation, our principal executive and principal financial officers concluded that no change in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) occurred during the fiscal quarter ended March 31, 2020 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

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PART II — OTHER INFORMATION

Item 1. Legal Proceedings

We are not party to any pending material legal proceedings and are not aware of any such proceedings contemplated by governmental authorities.

Item 1A. Risk Factors

The following risk factor should be read in conjunction with the “Risk Factors” previously disclosed in our annual report on Form 10-K filed with the SEC on March 27, 2020.

We may not comply with the Nasdaq continued listing requirements. If we are unable to comply 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.

We are required to meet certain qualitative and financial tests to maintain the listing of our securities on The Nasdaq Capital Market. As of March 31, 2020, we were not in compliance with the Nasdaq continued listing requirements related to minimum bid price. As of March 31, 2020 we were in compliance with the Nasdaq continued listing requirements related to minimum stockholders' equity; however, at certain times during 2019 and 2018 we were not in compliance with this requirement.

On December 4, 2019, we received a letter from The Nasdaq Capital Market ("Nasdaq") indicating that we failed to comply with the minimum bid price requirement of Nasdaq Listing Rule 5550(a)(2). Nasdaq Listing Rule 5550(a) (2) requires that companies listed on Nasdaq maintain a minimum closing bid price of at least $1.00 per share.

Under Nasdaq Listing Rule 5810(c)(3)(A), we had a 180 calendar day grace period, or until June 1, 2020, to regain compliance by meeting the continued listing standard. On April 17, 2020, we received a letter from Nasdaq which extended the grace period from June 1, 2020 to August 17, 2020.

The continued listing standard will be met if the Company's common stock has a minimum closing bid price of at least $1.00 per share for a minimum of ten consecutive business days during the 180 calendar day grace period. If we are not in compliance by August 17, 2020, we may be afforded a second 180 calendar day period to regain compliance. To qualify, we would be required to meet the continued listing requirement for market value of publicly held shares and all other initial listing standards for The Nasdaq Capital Market, except for the minimum bid price requirement. In addition, we would be required to notify Nasdaq of our intention to cure the minimum bid price deficiency during the second compliance period, by effecting a reverse stock split, if necessary. On April 23, 2020, we filed our Definitive Proxy Statement on Schedule 14A related to our Annual Meeting of Stockholders on May 27, 2020, which included a proposal for a “reverse stock split” by a ratio of not less than one-for-five and not more than one-for-twenty-five, with the exact ratio to be set within this range by our Board of Directors in its sole discretion. There is no assurance that our stockholders will approve the “reverse stock split” proposal.

If we do not regain compliance within the allotted compliance period(s), including any extensions that may be granted by Nasdaq, Nasdaq will provide notice that the Company's common stock will be subject to delisting. At that time, we may appeal the Nasdaq Staff's determination to a Nasdaq Hearings Panel. We are monitoring the closing bid price of the Company's common stock and considering our available options to resolve the noncompliance with the minimum bid price requirement.

There can be no assurance that we will be able to regain compliance with the minimum bid price requirement or maintain compliance with the minimum stockholders' equity requirement or will otherwise be in compliance with other Nasdaq listing criteria.

If we are unable to maintain compliance with the continued listing requirements of the Nasdaq Capital Market, our Common Stock could be delisted, making it could be more difficult to buy or sell our securities and to obtain accurate quotations, and the price of our securities could suffer a material decline. Delisting could also impair our ability to raise capital.

40

The outbreak of the novel coronavirus disease, COVID-19, could adversely impact our business, including our clinical trials, drug manufacturing and nonclinical activities.

In December 2019, a novel strain of coronavirus, COVID-19, was identified in Wuhan, China. This virus continues to spread globally and, as of March 2020, has spread to nearly every country and region in the world, including those in which we have active clinical trial sites. The outbreak and government measures taken in response have also had a significant impact, both direct and indirect, on businesses and commerce, as worker shortages have occurred; supply chains have been disrupted; facilities and production have been suspended; and demand for certain goods and services, such as medical services and supplies, has spiked, while demand for other goods and services, such as travel, has fallen. In response to the spread of COVID-19, although we are an essential business and have maintained a limited number of staff in our offices, the majority of our corporate employees and our administrative employees are working remotely. As the COVID-19 pandemic continues to spread around the globe, we may experience disruptions that could severely impact our business, clinical trials, drug manufacturing and nonclinical activities, including:

· delays or difficulties in enrolling patients in our clinical trials, such as the temporary hold of enrollment in the investigator-initiated Phase 1 study of rigosertib in combination with a PD-1 inhibitor for patients with progressive K-Ras mutated non-small cell lung cancer;

· delays or difficulties in clinical site initiation, including difficulties in recruiting clinical site investigators and clinical site staff;

· diversion of healthcare resources away from the conduct of clinical trials, including the diversion of hospitals serving as our clinical trial sites and hospital staff supporting the conduct of our clinical trials;

· interruption of key clinical trial activities, such as clinical trial site monitoring, due to limitations on travel imposed or recommended by federal or state governments, employers and others or interruption of clinical trial subject visits and study procedures, which may impact the integrity of subject data and clinical study endpoints;

· interruption or delays in the operations of the FDA or other regulatory authorities, which may impact review and approval timelines;

· interruption of, or delays in receiving, supplies of our product candidates from our contract manufacturing organizations due to staffing shortages, production slowdowns or stoppages and disruptions in delivery systems;

· delays in clinical sites receiving the supplies and materials needed to conduct our clinical trials and interruption in global shipping that may affect the transport of clinical trial materials;

· interruptions in nonclinical studies due to restricted or limited operations at our laboratory facility or those of our outsourced service providers;

· limitations on employee resources that would otherwise be focused on the conduct of our nonclinical studies or clinical trials, including because of sickness of employees or their families or the desire of employees to avoid contact with large groups of people;

· delays in receiving approval from local regulatory authorities to initiate our planned clinical trials;

· changes in local regulations as part of a response to COVID-19 which may require us to change the ways in which our clinical trials are conducted, which may result in unexpected costs, or to discontinue the clinical trials altogether;

· delays in necessary interactions with local regulators, ethics committees and other important agencies and contractors due to limitations in employee resources or forced furlough of government employees;

· refusal of the FDA to accept data from clinical trials in affected geographies outside the United States; and

· interruption or delays to our discovery and development pipeline.

In addition, the spread of COVID-19 has had and may continue to severely impact the trading price of shares of our common stock and could further severely impact our ability to raise additional capital on a timely basis or at all.

41

The COVID-19 pandemic continues to rapidly evolve. The extent to which the COVID-19 may impact our business, including our drug manufacturing, nonclinical activities, clinical trials and financial condition will depend on future developments, which are highly uncertain and cannot be predicted with confidence, such as the ultimate geographic spread of the disease, the duration of the pandemic, travel restrictions and social distancing in the United States and other countries, business closures or business disruptions and the effectiveness of actions taken in the United States and other countries to contain and treat the disease.

To the extent the COVID-19 pandemic adversely affects our business and financial results, it may also have the effect of heightening many of the other risks described in this section and in the “Risk Factors” section of our Annual Report on Form 10-K for the year ended December 31, 2019.

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 our stockholders’ ability to obtain a favorable judicial forum for disputes with us or our directors, officers, employees or agents.

Our Certificate of Incorporation requires that the Court of Chancery of the State of Delaware will, to the fullest extent permitted by applicable law, be the sole and exclusive forum for the following:

· any derivative action or proceeding brought on behalf of us;

· 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, creditors or other constituents;

· any action asserting a claim against us arising pursuant to any provision of, the Delaware General Corporation Law, the Certificate of Incorporation or our bylaws; or

· any action asserting a claim against us governed by the internal affairs doctrine, in each such case subject to said Court of Chancery having personal jurisdiction over the indispensable parties named as defendants therein.

Provided, that, if and only if the Court of Chancery of the State of Delaware dismisses any of the foregoing actions for lack of subject matter jurisdiction, any such action or actions may be brought in another state court sitting in the State of Delaware.

Because the applicability of the exclusive forum provision is limited to the extent permitted by applicable law, we do not intend that the exclusive forum provision would 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, and acknowledge that federal courts have concurrent jurisdiction over all suits brought to enforce any duty or liability created by the Securities Act. We note that there is uncertainty as to whether a court would enforce the provision and that investors cannot waive compliance with the federal securities laws and the rules and regulations thereunder. Although we believe this provision benefits us by providing increased consistency in the application of Delaware law in the types of lawsuits to which it applies, the provision may have the effect of discouraging lawsuits against our directors and officers.

42

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

Not applicable.

Item 3. Defaults Upon Senior Securities

Not applicable.

Item 4. Mine Safety Disclosures

Not applicable.

Item 5. Other Information

Not applicable.

43

Item 6. Exhibits

Exhibit Number	Description
31.1	Rule 13a-14(a)/15d-14(a) Certifications of Principal Executive Officer
31.2	Rule 13a-14(a)/15d-14(a) Certifications of Principal Financial Officer
32.1	Section 1350 Certifications of Principal Executive Officer
32.2	Section 1350 Certifications of Principal Financial Officer
101.INS	XBRL Instance
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB	XBRL Taxonomy Extension Labels Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document

44

EXHIBIT INDEX

Exhibit Number	Description
31.1	Rule 13a-14(a)/15d-14(a) Certifications of Principal Executive Officer
31.2	Rule 13a-14(a)/15d-14(a) Certifications of Principal Financial Officer
32.1	Section 1350 Certifications of Principal Executive Officer
32.2	Section 1350 Certifications of Principal Financial Officer
101.INS	XBRL Instance
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB	XBRL Taxonomy Extension Labels Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document

45

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.

	ONCONOVA THERAPEUTICS, INC.
Dated: May 15, 2020
	/s/ STEVEN M. FRUCMTMAN, M. D.
	Steven M. Fruchtman, M.D.
	President and Chief Executive Officer
	(Principal Executive and Principal Operating Officer)
Dated: May 15, 2020
	/s/ MARK GUERIN
	Mark Guerin
	Chief Financial Officer
	(Principal Financial Officer)

46

EX-31.1

Exhibit 31.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Steven Fruchtman, certify that:

1.     I have reviewed this quarterly report on Form 10-Q of Onconova 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.

Dated: May 15, 2020
	/s/ Steven M. Fruchtman, M.D.
	Steven M. Fruchtman, M.D.
	President and Chief Executive Officer
	(Principal Executive and Principal Operating Officer)

EX-31.2

Exhibit 31.2

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO 

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Mark Guerin, certify that:

1.     I have reviewed this quarterly report on Form 10-Q of Onconova 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.

Dated: May 15, 2020
	/s/ Mark Guerin
	Mark Guerin
	Chief Financial Officer
	(Principal Financial Officer)

EX-32.1

Exhibit 32.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER 

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 Onconova Therapeutics, Inc. (the “Company”) on Form 10-Q for the period ended March 31, 2020, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Steven Fruchtman, President and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

1.     The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.     That information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: May 15, 2020	/s/ Steven M. Fruchtman, M.D.
	Steven M. Fruchtman, M.D.
	President and Chief Executive Officer ( Principal Executive and Principal Operating Officer )

The foregoing certification is being furnished solely to accompany the Report pursuant to 18 U.S.C. § 1350, and is not being filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and is not to be incorporated by reference into any filing of the Company, whether made before or after the date hereof, regardless of any general incorporation language in such filing.

EX-32.2

Exhibit 32.2

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER

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 Onconova Therapeutics, Inc. (the “Company”) on Form 10-Q for the period ended March 31, 2020, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Mark Guerin, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

1.     The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.     That information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: May 15, 2020	/s/ Mark Guerin
	Mark Guerin
	Chief Financial Officer
	(Principal Financial Officer)

The foregoing certification is being furnished solely to accompany the Report pursuant to 18 U.S.C. § 1350, and is not being filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and is not to be incorporated by reference into any filing of the Company, whether made before or after the date hereof, regardless of any general incorporation language in such filing.

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License and Collaboration Agreements

3 Months Ended

Mar. 31, 2020

License and Collaboration Agreements

License and Collaboration Agreements

10. License and Collaboration Agreement

HanX Rigosertib Agreement (terminated)

On May 10, 2019, the Company entered into a License and Collaboration Agreement (the “HanX License Agreement”) with HanX and two Securities Purchase Agreements (the “HanX Securities Purchase Agreements”), one with HanX and the other with an affiliate of HanX.

Under the terms of the HanX License Agreement, the Company granted HanX an exclusive, royalty-bearing license, with the right to sublicense, to study and commercialize rigosertib in greater China (the “HanX Territory,” including the People’s Republic of China, Hong Kong, Macau and Taiwan).

In exchange for these rights, the agreement required HanX to make upfront payments to the Company totaling $4 million, including a $2.0 million upfront fee and an investment totaling $2.0 million to purchase shares of the Company at a premium to market. HanX was also required to dedicate $2.0 million in local currency, to be placed in escrow, for clinical development expenses in the HanX Territory. In addition, the agreement provided for potential payments to the Company for regulatory, development and sales-based milestone payments up to $45.5 million and tiered royalties up to double digits on net sales in in the HanX Territory. The Company would supply rigosertib for sale in the HanX Territory. 

The HanX License Agreement also contained certain provisions for termination by either party in the event of breach of the HanX License Agreement by the other party, subject to a cure period, or bankruptcy of the other party.

Under the terms of the HanX Securities Purchase Agreement, HanX and its affiliate agreed to make upfront equity investments in the Company at a specified premium to the Company’s share price.  The common stock purchased by HanX and its affiliates is subject to certain lock-up restrictions and HanX and its affiliates are entitled to certain registration and participation rights.

The Company assessed the HanX License Agreement for revenue recognition in accordance with ASC 606 and determined that there are two distinct performance obligations: the license and the supply of rigosertib for sale in the HanX Territory.  The Company concluded that control of the license had been transferred to HanX during the three months ended June 30, 2019 and recognized license revenue of $1.7 million, which is net of applicable taxes withheld by the Chinese government, related to the $2.0 million upfront fee.  The Company believes a portion of the tax being withheld by the Chinese government may be recoverable at a later date and could be recognized as license revenue if and when recovered by the Company. The $1.7 million was recorded as a receivable at June 30, 2019 and the payment was received in August 2019. 

Pursuant to the HanX Securities Purchase Agreements, closing of one of the upfront equity investments occurred on May 15, 2019 when an affiliate of HanX purchased 103,520 shares of common stock for $0.5 million. The total amount of the premium was $0.1 million and this amount was recognized as license revenue during the three months ended June 30, 2019.  The remaining upfront equity investments represent equity-classified forward contracts for the purchase of the Company’s equity at a pre-determined price.  The premium of the future equity purchase from HanX as of the contract date of $0.2 million was recognized as license revenue during the three months ended June 30, 2019 and was included in other current assets, pending receipt of payment.

On July 9, 2019, the Company extended the deadline for payments under the HanX License Agreement and the HanX Securities Purchase Agreements. On August 8, 2019 Onconova received the non-refundable license fee from HanX. On August 14, 2019, the Company further extended the deadline of HanX's remaining upfront payments relating to its equity investment in the Company while HanX continued to seek Chinese regulatory approval for such equity investment. In December 2019, the Company reassessed the likelihood of receiving the $0.2 million premium on the equity investment previously recorded as revenue. The Company reversed the $0.2 million revenue in December 2019.

On January 16, 2020, the Company determined HanX did not fulfill its obligations under the License Agreement and, in accordance with the terms of the License Agreement, the License Agreement was deemed to be void ab initio. Upon this termination, the rights to Product in the Territory reverted to the Company in accordance with the terms of the License Agreement. In addition, the Securities Purchase Agreements terminated automatically effective upon the termination of the License Agreement in accordance with the Securities Purchase Agreements.

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Balance Sheet Detail

3 Months Ended

Mar. 31, 2020

Balance Sheet Detail

Balance Sheet Detail

6. Balance Sheet Detail

Prepaid expenses and other current assets:

	March 31,		December 31,
	2020		2019
Research and development	$	366,000	$	321,000
Manufacturing		39,000		25,000
Insurance		168,000		164,000
Other		222,000		140,000
	$	795,000	$	650,000

Property and equipment:

	March 31,		December 31,
	2020		2019
Property and equipment	$	2,283,000	$	2,283,000
Accumulated depreciation		(2,236,000)		(2,233,000)
	$	47,000	$	50,000

Accrued expenses and other current liabilities:

	March 31,		December 31,
	2020		2019
Research and development	$	1,863,000	$	2,016,000
Employee compensation		526,000		1,537,000
Professional fees		112,000		242,000
	$	2,501,000	$	3,795,000

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Fair Value Measurements - Weighted-average assumptions (Details)	Mar. 31, 2020 Y
Risk-free interest rate | Pre-funded warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.20
Expected volatility | Pre-funded warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	82.18
Expected term
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	1.33
Expected dividend yield | Pre-funded warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0

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Revenue (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue
Revenue	$ 52,000	$ 68,000
Deferred revenue
Balance at the beginning of the period	226,000
Balance at the end of the period	226,000
SymBio
Deferred revenue
Balance at the beginning of the period	3,921,000
Recognition to revenue	56,000
Balance at the end of the period	3,865,000
License and collaboration agreements
Revenue
Revenue	52,000	68,000
License and collaboration agreements | SymBio | Upfront license fee recognition over time
Revenue
Revenue	56,000	57,000
License and collaboration agreements | SymBio | Supplies and other
Revenue
Revenue	$ (4,000)	$ 11,000

XML

Balance Sheet Detail Property and Equipment (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Property and Equipment
Property and equipment	$ 2,283,000	$ 2,283,000
Accumulated depreciation	(2,236,000)	(2,233,000)
Property and equipment, net	$ 47,000	$ 50,000

XML

License and Collaboration Agreements (Details) - USD ($)									1 Months Ended		3 Months Ended
	Jan. 03, 2020	Dec. 19, 2019	Dec. 10, 2019	Sep. 25, 2019	May 15, 2019	May 10, 2019	Jul. 29, 2016	Jan. 05, 2016	Dec. 31, 2019	Nov. 30, 2019	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019
License and collaboration agreements
Issuance of common stock, net (in shares)	27,662,518	13,878,864	14,326,648	2,198,938			239,986	12,912		30,250,000
Value of common stock											$ 9,062,000
Research and development											$ 3,370,000		$ 4,075,000
License and collaboration agreements | HanX
License and collaboration agreements
Committed amount						$ 4,000,000
Collaborative Arrangement upfront fees												$ 2,000,000
Collaboration revenue						2,000,000
Issuance of common stock, net (in shares)					103,520
Escrow Deposit						2,000,000
Aggregate potential milestone payments based on annual net sales						45,500,000
Revenue												1,700,000
Receivable recorded												1,700,000
Value of common stock					$ 500,000	$ 2,000,000
Redemption premium					$ 100,000				$ 200,000
Reversal of revenue recognized									$ 200,000
License and collaboration agreements | HanX | Other Current Assets [Member]
License and collaboration agreements
Receivable recorded												$ 200,000

XML

Fair Value Measurements - Transfers (Details)	Mar. 31, 2020 USD ($)
Fair Value Measurements
Amount of transfers of assets out of Level 1 into Level 2	$ 0
Amount of transfers of assets out of Level 2 into Level 1	0
Amount of transfers of liabilities out of Level 1 into Level 2	0
Amount of transfers of liabilities out of Level 2 into Level 1	$ 0

XML

Stock-Based Compensation - Outstanding and Exercisable (Details)	3 Months Ended
	Mar. 31, 2020 $ / shares shares
Stock options
Share-Based Compensation
Shares (in shares)	1,017,393
Exercisable (in shares)	257,495
Exercise Price Range $0.30 - $0.31 | Stock options
Share-Based Compensation
Exercise price, lower range limit (in dollars per share) | $ / shares	$ 0.30
Exercise price, upper range limit (in dollars per share) | $ / shares	$ 0.31
Shares (in shares)	629,750
Exercise Price Range $3.39 - $3.72 | Stock options
Share-Based Compensation
Exercise price, lower range limit (in dollars per share) | $ / shares	$ 3.39
Exercise price, upper range limit (in dollars per share) | $ / shares	$ 3.72
Shares (in shares)	51,998
Exercisable (in shares)	7,000
Exercise Price Range $4.34 - $7.05 | Stock options
Share-Based Compensation
Exercise price, lower range limit (in dollars per share) | $ / shares	$ 4.34
Exercise price, upper range limit (in dollars per share) | $ / shares	$ 7.05
Shares (in shares)	269,913
Exercisable (in shares)	187,500
Exercise Price Range $16.35 - $97.50 | Stock options
Share-Based Compensation
Exercise price, lower range limit (in dollars per share) | $ / shares	$ 16.35
Exercise price, upper range limit (in dollars per share) | $ / shares	$ 97.50
Shares (in shares)	48,133
Exercisable (in shares)	45,410
Exercise Price Range $222.00 - $225.00 | Stock options
Share-Based Compensation
Exercise price, lower range limit (in dollars per share) | $ / shares	$ 222.00
Exercise price, upper range limit (in dollars per share) | $ / shares	$ 225.00
Shares (in shares)	1,871
Exercisable (in shares)	1,871
Exercise Price Range $348.00 - $597.00 | Stock options
Share-Based Compensation
Exercise price, lower range limit (in dollars per share) | $ / shares	$ 348.00
Exercise price, upper range limit (in dollars per share) | $ / shares	$ 597.00
Shares (in shares)	4,867
Exercisable (in shares)	4,866
Exercise Price Range $651.00 - $1,129.50 | Stock options
Share-Based Compensation
Exercise price, lower range limit (in dollars per share) | $ / shares	$ 651.00
Exercise price, upper range limit (in dollars per share) | $ / shares	$ 1,129.50
Shares (in shares)	3,616
Exercisable (in shares)	3,603
Exercise Price Range $1,992.00 - $2,268.00 | Stock options
Share-Based Compensation
Exercise price, lower range limit (in dollars per share) | $ / shares	$ 1,992.00
Exercise price, upper range limit (in dollars per share) | $ / shares	$ 2,268.00
Shares (in shares)	6,910
Exercisable (in shares)	6,910
Exercise Price Range $4,156.50 - $4,371.00
Share-Based Compensation
Exercise price, lower range limit (in dollars per share) | $ / shares	$ 4,156.50
Exercise price, upper range limit (in dollars per share) | $ / shares	$ 4,371.00
Exercise Price Range $4,156.50 - $4,371.00 | Stock options
Share-Based Compensation
Shares (in shares)	335
Exercisable (in shares)	335

XML

Condensed Consolidated Statements of Operations - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Condensed Consolidated Statements of Operations
Revenue	$ 52,000	$ 68,000
Operating expenses:
General and administrative	1,807,000	3,234,000
Research and development	3,370,000	4,075,000
Total operating expenses	5,177,000	7,309,000
Loss from operations	(5,125,000)	(7,241,000)
Change in fair value of warrant liability	(63,000)	(427,000)
Other income, net	96,000	68,000
Net loss	$ (5,092,000)	$ (7,600,000)
Net loss per share, basic and diluted (in dollars per share)	$ (0.03)	$ (1.29)
Basic and diluted weighted average shares outstanding (in shares)	160,346,087	5,890,098

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Nature of Business

3 Months Ended

Mar. 31, 2020

Nature of Business

Nature of Business

1. Nature of Business

The Company

Onconova Therapeutics, Inc. (the "Company") was incorporated in the State of Delaware on December 22, 1998 and commenced operations on January 1, 1999. The Company's headquarters are located in Newtown, Pennsylvania. The Company is a clinical-stage biopharmaceutical company focused on discovering and developing novel small molecule product candidates primarily to treat cancer. The Company has proprietary targeted cancer agents designed to work against specific cellular pathways that are important to cancer cells. We believe that the product candidates in our pipeline have the potential to be efficacious in a variety of cancers. The Company has three clinical-stage product candidates and several preclinical programs. During 2012, Onconova Europe GmbH was established as a wholly owned subsidiary of the Company for the purpose of further developing business in Europe.

The Company has entered into several license and collaboration agreements. In 2011, the Company entered into a license agreement, as subsequently amended, with SymBio Pharmaceuticals Limited ("SymBio"), which grants SymBio certain rights to commercialize rigosertib in Japan and Korea. In December 2017, the Company entered into a license and collaboration agreement with HanX for the further development, registration and commercialization of ON 123300 in Greater China. ON 123300 is a preclinical compound which the Company believes has the potential to overcome the limitations of current generation CDK  4/6 inhibitors. Under the terms of the agreement, the Company received an upfront payment, and will receive regulatory and commercial milestone payments, as well as royalties on Chinese sales. The key feature of the collaboration is that HanX provides all funding required for Chinese IND enabling studies performed for Chinese Food and Drug Administration IND approval. The Company and HanX also intended for these studies to comply with the FDA standards. Accordingly, such studies may be used by the Company for an IND filing with the FDA. The Chinese IND was approved in January 2020. The Company plans to file a US IND related to 123300 after obtaining the required manufacturing data. The cGMP manufacturer for ON 123300 has been identified and qualified. It is anticipated that the cGMP API would be available in 4-6 months. Subsequently, the drug product will be manufactured with an anticipated filing of an IND in Q4 of 2020. The Company maintains global rights outside of China. On March 2, 2018, the Company entered into a License, Development and Commercialization Agreement with Pint International SA (which, together with its affiliate Pint Pharma GmbH, are collectively referred to as "Pint"). Under the terms of the agreement, the Company granted Pint an exclusive, royalty-bearing license, with the right to sublicense, under certain Company patent rights and know-how to develop and commercialize any pharmaceutical product containing rigosertib in all uses of rigosertib in certain Latin America countries. In May 2019, the Company entered into a License and Collaboration Agreement (the "HanX License Agreement") with HanX Biopharmaceuticals, Inc. ("HanX"). Under the terms of the HanX License Agreement, the Company granted HanX an exclusive, royalty-bearing license, with the right to sublicense, under certain Company patent rights and know-how to develop and commercialize any pharmaceutical product (the "HanX Product") containing rigosertib in all uses of rigosertib or the HanX Product in humans therapeutics uses in the People's Republic of China, Hong Kong, Macau and Taiwan (the "HanX Territory"). In connection with the License Agreement, the Company also entered into a Securities Purchase Agreement with each of HanX and Abundant New Investments Ltd. ("Abundant"), an affiliate of HanX (each, a "Securities Purchase Agreement" and together, the "Securities Purchase Agreements"). HanX did not fulfill its obligations under the HanX License Agreement and in January 2020, in accordance with the terms of the HanX License Agreement, the HanX License Agreement was deemed to be void ab initio. Upon this termination, the rights to HanX Product in the HanX Territory reverted to the Company in accordance with the terms of the HanX License Agreement. In addition, the Securities Purchase Agreements terminated automatically effective upon the termination of the HanX License Agreement in accordance with the Securities Purchase Agreements. In November 2019, the Company entered into a Distribution, License and Supply Agreement (the "Knight License Agreement") with Knight Therapeutics Inc. ("Knight"). Under the terms of the Knight License Agreement, the Company granted Knight (i) a non-exclusive, royalty-bearing license, with the right to sublicense, under certain Company patent rights and know-how to develop and manufacture any product (the "Knight Licensed Product") containing rigosertib for Canada (and Israel should Knight exercise its option) (the "Knight Territory") and in human uses (the "Field"), and (ii) an exclusive, royalty-bearing license, with the right to sublicense, under certain Company patent rights and know-how to commercialize the Knight Licensed Product in the Knight Territory and in the Field. Knight has also agreed to obtain from the Company us all of its requirements of the Knight Licensed Products for the Knight Territory, and the Company has agreed to supply Knight with all of its requirements of the Knight Licensed Products. In December 2019, the Company entered into a Distribution, License and Supply Agreement (the "STA License Agreement") with Specialised Therapeutics Asia Pte. Ltd. ("STA"). Under the terms of the STA License Agreement, the Company granted STA (i) a non-exclusive, royalty-bearing license, with the right to sublicense, under certain Company patent rights and know-how to develop and manufacture any product (the "STA Licensed Product") containing rigosertib for Australia and New Zealand (the "STA Territory") and in human uses (the "Field"), and (ii) an exclusive, royalty-bearing license, with the right to sublicense, under certain Company patent rights and know-how to commercialize the STA Licensed Product in the STA Territory and in the Field. STA has also agreed to obtain from the Company all of its requirements of the STA Licensed Products for the STA Territory, and the Company has agreed to supply STA with all of its requirements of the STA Licensed Products.

Liquidity

The Company has incurred recurring operating losses since inception. For the three months ended March 31, 2020, the Company incurred a net loss of $5,092,000 and as of March 31, 2020 the Company had generated an accumulated deficit of $408,491,000. The Company anticipates operating losses to continue for the foreseeable future due to, among other things, costs related to research, development of its product candidates and its preclinical programs, strategic alliances and its administrative organization. At March 31, 2020, the Company had cash and cash equivalents of $31,036,000. The Company will require substantial additional financing to fund its ongoing clinical trials and operations, and to continue to execute its strategy.

In February and March 2019 the Company implemented a workforce reduction. Six employees were terminated, which represented approximately 24% of the Company's workforce. A severance related charge of approximately $1,843,000, which included a non-cash charge of approximately $415,000 related to the accelerated vesting of outstanding stock options, was recorded in the three months ended March 31, 2019. Of the total severance related charge of $1,843,000;  $1,562,000 was recorded in general and administrative operating expenses and $281,000 was recorded in research and development operating expenses. The severance expense was paid in periodic amounts through February 2020.

On September 25, 2019 the Company closed on an offering of common stock to certain investors. The Company issued 2,198,938 shares of common stock and amended warrants for the purchase of 2,198,938 shares of common stock. The investors, who were also holders of the Company's preferred stock warrants issued in February 2018 and/or May 2018, received a warrant amendment under which a certain number of such investors' preferred stock warrants received a reduction in exercise price and an extension of term. Net proceeds from the sale of common stock and the amendment of preferred stock warrants were approximately $3.3 million. In November 2019, the Company closed on an offering of units of common stock and warrants. The Company issued 30,250,000 shares of common stock, pre-funded warrants to purchase 24,750,000 shares of common stock, and common stock warrants to purchase 55,000,000 shares of common stock. Net proceeds were approximately $9.7 million. On December 10, 2019, the Company closed on an offering of units of common stock and warrants. The Company issued 14,326,648 shares of common stock and common stock warrants to purchase 7,163,324 shares of common stock. Net proceeds were approximately $4.4 million. On December 19, 2019, the Company also closed on an offering of units of common stock and warrants. The Company issued 13,878,864 shares of common stock and common stock warrants to purchase 6,939,432 shares of common stock. Net proceeds were approximately $4.4 million. During 2019, pre-funded warrants were exercised for 23,720,784 shares of common stock and net proceeds were $35,000. Also during 2019, common warrants were exercised for 21,014,378 shares of common stock and net proceeds were approximately $4.9 million.

On January 3, 2020, the Company closed on an offering of common stock. The Company issued 27,662,518 shares of common stock and net proceeds were approximately $9.0 million. In addition, during the quarter ended March 31, 2020; 28,586,200 warrants from the November 2019 offering have been exercised, resulting in proceeds of $5.7 million.

The Company has and may continue to delay, scale-back, or eliminate certain of its research and development activities and other aspects of its operations until such time as the Company is successful in securing additional funding. The Company is exploring various dilutive and non-dilutive sources of funding, including equity financings, strategic alliances, business development and other sources. The future success of the Company is dependent upon its ability to obtain additional funding. There can be no assurance, however, that the Company will be successful in obtaining such funding in sufficient amounts, on terms acceptable to the Company, or at all. The Company currently anticipates that current cash and cash equivalents will be sufficient to meet its anticipated cash requirements into the third quarter of 2021.

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2020

Fair Value Measurements

Schedule of Black-Scholes option pricing model assumptions

Risk-free interest rate	0.20	%
Expected volatility	82.18	%
Expected term	1.33 years
Expected dividend yield	0	%

Schedule of financial assets and liabilities measured at fair value on a recurring basis

	Fair Value Measurement as of:
	March 31, 2020								December 31, 2019
	Level 1		Level 2		Level 3		Balance		Level 1		Level 2		Level 3		Balance
Tradable warrants liability	$	176,000	$	—	$	—	$	176,000	$	113,000	$	—	$	—	$	113,000
Non-tradable warrants liability		—		—		—		—		—		—		—		—
Total	$	176,000	$	—	$	—	$	176,000	$	113,000	$	—	$	—	$	113,000

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Revenue (Tables)

3 Months Ended

Mar. 31, 2020

Revenue.

Schedule of recognized revenue under funding, license and collaboration agreements

	Three Months Ended March 31,
	2020		2019
Symbio
Upfront license fee recognition over time	$	56,000	$	57,000
Supplies and other		(4,000)		11,000
	$	52,000	$	68,000

Schedule of deferred revenue

	Symbio
	Upfront Payment
Deferred balance at December 31, 2019	$	3,921,000
Recognition to revenue		56,000
Deferred balance at March 31, 2020	$	3,865,000

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Summary of Significant Accounting Policies - Leases (Details)		3 Months Ended
	Jan. 01, 2019 USD ($)	Mar. 31, 2020 USD ($)
Summary of Significant Accounting Policies
Number of leases	1	1
Amount of lease payments		$ 45,000
Remaining payments due		166,000
Amount of lease liabilities	$ 0	0
Amount of right of use asset	$ 0	$ 0

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Stock-Based Compensation (Details) - shares	Jun. 17, 2019	Mar. 31, 2020	Dec. 31, 2018	Jun. 27, 2018	Jul. 31, 2013
2013 Plan
Stock-Based Compensation
Shares authorized (in shares)					40,718
Evergreen provision (percent)					4.00%
Evergreen provision, shares ( in shares)					13,333
2013 Plan | Common Stock
Stock-Based Compensation
Shares authorized (in shares)				2,354
2018 Plan
Stock-Based Compensation
Shares authorized (in shares)				402,354
Additional shares authorized (in shares)	589,500
2018 Plan | Common Stock
Stock-Based Compensation
Shares authorized (in shares)				400,000
Stock options
Stock-Based Compensation
Common Stock available for future issuance (in shares)		36,791	59,731

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Stock-Based Compensation - Unrecognized Compensation Expense (Details) - Stock options	3 Months Ended
	Mar. 31, 2020 USD ($)
Stock-Based Compensation
Unrecognized compensation expense related to unvested stock options	$ 613,000
Weighted-average period for recognizing unrecognized compensation expense related to unvested stock options (in years)	2 years 3 months 26 days

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Related-Party Transactions (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Sep. 30, 2019	Dec. 31, 2018
Member of board of directors
Related-Party Transactions
Payments to related party	$ 124,000	$ 88,000
Amounts due to related party	124,000	150,000
Significant shareholder
Related-Party Transactions
Payments to related party	33,000	$ 33,000
Amounts due to related party	$ 33,000		$ 33,000	$ 33,000

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Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2020

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

2. Summary of Significant Accounting Policies

Basis of Presentation

The condensed consolidated financial statements are prepared in conformity with accounting principles generally accepted in the United States (“GAAP”) for interim financial information. Certain information and footnotes normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). The financial statements include the consolidated accounts of the Company and its wholly-owned subsidiary, Onconova Europe GmbH. All significant intercompany transactions have been eliminated.

Unaudited Interim Financial Information

The accompanying condensed consolidated balance sheet as of March 31, 2020, the condensed consolidated statements of operations and comprehensive loss for the three months ended March 31, 2020 and 2019, the consolidated statements of stockholders’ equity (deficit) for the three months ended March 31, 2020 and 2019 and the condensed consolidated statements of cash flows for the three months ended March 31, 2020 and 2019 are unaudited. The interim unaudited condensed consolidated financial statements have been prepared on the same basis as the annual audited consolidated financial statements and, in the opinion of management, reflect all adjustments, which include only normal recurring adjustments, necessary for the fair statement of the Company’s financial position as of March 31, 2020, the results of its operations for the three months ended March 31, 2020 and 2019, and its cash flows for the three months ended March 31, 2020 and 2019. The financial data and other information disclosed in these notes related to the three months ended March 31, 2020 and 2019 are unaudited. The results for the three months ended March 31, 2020 are not necessarily indicative of results to be expected for the year ending December 31, 2019, any other interim periods, or any future year or period.  These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the notes thereto for the year ended December 31, 2019 included in the Company’s annual report on Form 10-K filed with the SEC on March 27, 2020.

Segment Information

Operating segments are defined as components of an enterprise about which separate discrete information is available for evaluation by the chief operating decision maker, or decision-making group, in deciding how to allocate resources and in assessing performance. The Company views its operations and manages its business in one segment, which is the identification and development of oncology therapeutics.

Significant Accounting Policies

The Company’s significant accounting policies are disclosed in the audited consolidated financial statements for the year ended December 31, 2019 included in the Company’s annual report on Form 10-K filed with the SEC on March 27, 2020. Since the date of such financial statements, there have been no changes to the Company’s significant accounting policies.

Fair Value Measurements

The carrying amounts reported in the accompanying consolidated financial statements for cash and cash equivalents, accounts payable, and accrued liabilities approximate their respective fair values because of the short-term nature of these accounts. The fair value of the warrant liability is discussed in Note 7, “Fair Value Measurements.”

Revenue Recognition

The Company recognizes revenue in accordance with Accounting Standards Codification Topic 606, Revenue from Contracts with Customers (ASC 606), which the Company adopted effective January 1, 2018 using the modified retrospective method. There was no material impact to our financial position and results of operations as a result of the adoption. The Company applies ASC 606 to all contracts with customers, except for contracts that are within the scope of other standards, such as leases, insurance, collaboration arrangements and financial instruments. In accordance with ASC 606, the Company recognizes revenue when its customer obtains control of promised goods or services, in an amount that reflects the consideration which the Company expects to receive in exchange for those goods or services. To determine revenue recognition for arrangements that the Company determines are within the scope of ASC 606, the Company performs the following five steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the Company satisfies a performance obligation. The Company only applies the five-step model to contracts when it is probable that it will collect the consideration it is entitled to in exchange for the goods and services it transfers to the customer. At contract inception, the Company assesses the goods or services promised within each contract that falls under the scope of ASC 606, determines those that are performance obligations and assesses whether each promised good or service is distinct. The Company then recognizes as revenue the amount of the transaction price that is allocated to the respective performance obligation when (or as) the performance obligation is satisfied.

The Company derives revenue from collaboration and licensing agreements and from the sale of products associated with material transfer, collaboration and supply agreements.

License, Collaboration and Other Revenues

The Company enters into licensing and collaboration agreements, under which it licenses certain of its product candidates’ rights to third parties. The Company recognizes revenue related to these agreements in accordance with ASC 606. The terms of these arrangements typically include payment from third parties of one or more of the following: non-refundable, up-front license fees; development, regulatory and commercial milestone payments; and royalties on net sales of the licensed product.

In determining the appropriate amount of revenue to be recognized as it fulfills its obligation under each of its agreements, the Company performs the five steps described above. As part of the accounting for these arrangements, the Company must develop assumptions that require judgment to determine the stand-alone selling price, which may include forecasted revenues, development timelines, reimbursement of personnel costs, discount rates and probabilities of technical and regulatory success.

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

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

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

Royalties: For arrangements that include sales-based royalties, including milestone payments based on the level of sales, and for which the license is deemed to be the predominant item to which royalties relate, the Company recognizes revenue at the later of (i) when the related sales occur, or (ii) when the performance obligation to which some of all of the royalty has been allocated has been satisfied (or partially satisfied).  To date, the Company has not recognized any royalty revenue from its license agreements.

Leases

The Company accounts for leases in accordance with Accounting Standards Codification Topic 842, Leases (ASC 842), which the Company adopted effective January 1, 2019. The Company determines whether an arrangement is a lease at contract inception by establishing if the contract conveys the right to control the use of identified property, plant, or equipment for a period of time in exchange for consideration.

Right of Use (ROU) Assets and Lease Liabilities are recognized at the lease commencement date based on the present value of all minimum lease payments over the lease term. The Company uses its incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments, when the implicit rate is not readily determinable. Lease terms may include options to extend or terminate the lease. These options are included in the lease term when it is reasonably certain that the Company will exercise that option. Operating lease expense is recognized on a straight-line basis over the lease term.

The Company has elected the following policy elections on adoption: use of portfolio approach on leases of assets under master service agreements, exclusion of short term leases (term of 12 months or less) on the balance sheet, and not separating lease and non-lease components.

At January 1, 2019 and March 31, 2020 the Company had one lease, which was for office space. The lease qualifies for the short term lease exception. Consequently, no ROU Asset or Lease Liability was recorded. The lease payments are being  recognized as an expense on a straight-line basis over the lease term. Lease payments for the three months ended March 31, 2020 were $45,000. Remaining payments due under the lease at March 31, 2020 are $166,000.

Recent Accounting Pronouncements

In February 2016 and through subsequent amendments, the FASB issued guidance which supersedes much of the previous guidance for leases. The new guidance requires lessees to recognize a right-of-use asset and a lease liability on their balance sheets for all the leases with terms greater than twelve months. Based on certain criteria, leases are classified as either financing or operating, with classification affecting the pattern of expense recognition in the income statement. For leases with a term of twelve months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and lease liabilities. If a lessee makes this election, it should recognize lease expense for such leases generally on a straight-line basis over the lease term. The guidance was effective for fiscal years beginning after December 15, 2018, and interim periods within those years, with early adoption permitted. In transition, lessees and lessors were permitted to recognize and measure leases at the date of adoption using a modified retrospective approach. The modified retrospective approach includes a number of optional practical expedients primarily focused on leases that commenced before the effective date of the new guidance, including continuing to account for leases that commence before the effective date in accordance with previous guidance, unless the lease is modified. The Company adopted the guidance in ASC 842 effective January 1, 2019 using the modified retrospective method, which does not require the restatement of prior period amounts. There was no impact to the Company’s financial position and results of operations as a result of the adoption.

In August 2018, the FASB issued guidance which changes the disclosure requirements for fair value measurement. The guidance amends the disclosure requirements in ASC Topic 820 by adding, changing, or removing certain disclosures. The guidance is effective for fiscal years beginning after December 15, 2019. The Company adopted this guidance effective January 1, 2020. There was no impact to the Company’s financial position, results of operations or financial statement disclosures as a result of the adoption.

In November 2018, the FASB issued guidance, which clarifies the interaction between ASC Topic 808, Collaborative Arrangements , and ASC Topic 606,  Revenue from Contracts with Customers . The guidance, among other items, clarifies that certain transactions between collaborative participants should be accounted for as revenue under Topic 606 when the collaborative arrangement participant is a customer in the context of a unit of account. The guidance is effective for fiscal years beginning after December 15, 2019. The Company adopted this guidance effective January 1, 2020. There was no impact to the Company’s financial position and results of operations as a result of the adoption.

In June 2016, the FASB issued new guidance on the accounting for credit losses on financial instruments. The guidance was amended in November 2019. The new guidance introduces an expected loss model for estimating credit losses, replacing the incurred loss model. The new guidance also changes the impairment model for available-for-sale debt securities, requiring the use of an allowance to record estimated credit losses (and subsequent recoveries). The guidance is effective for fiscal years beginning after December 15, 2022, and interim periods within those years, with early adoption permitted. The Company is evaluating the impact of the adoption of the standard on its consolidated financial statements.

XML

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2020	May 01, 2020
Document and Entity Information
Document Type	10-Q
Document Period End Date	Mar. 31, 2020
Entity Registrant Name	Onconova Therapeutics, Inc.
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		168,666,070
Entity Central Index Key	0001130598
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Amendment Flag	false

XML

Condensed Consolidated Statements of Comprehensive Loss - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Condensed Consolidated Statements of Comprehensive Loss
Net loss	$ (5,092,000)	$ (7,600,000)
Foreign currency translation adjustments, net	(6,000)	(6,000)
Other comprehensive loss, net of tax	(6,000)	(6,000)
Comprehensive loss	$ (5,098,000)	$ (7,606,000)

XML

Summary of Significant Accounting Policies - Segment Information (Details)	3 Months Ended
	Mar. 31, 2020 segment
Summary of Significant Accounting Policies
Number of operating segments	1

XML

Balance Sheet Detail (Tables)

3 Months Ended

Mar. 31, 2020

Balance Sheet Detail

Schedule of prepaid expenses and other current assets

	March 31,		December 31,
	2020		2019
Research and development	$	366,000	$	321,000
Manufacturing		39,000		25,000
Insurance		168,000		164,000
Other		222,000		140,000
	$	795,000	$	650,000

Schedule of property and equipment

	March 31,		December 31,
	2020		2019
Property and equipment	$	2,283,000	$	2,283,000
Accumulated depreciation		(2,236,000)		(2,233,000)
	$	47,000	$	50,000

Schedule of accrued expenses and other current liabilities

	March 31,		December 31,
	2020		2019
Research and development	$	1,863,000	$	2,016,000
Employee compensation		526,000		1,537,000
Professional fees		112,000		242,000
	$	2,501,000	$	3,795,000

XML

Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2020

Summary of Significant Accounting Policies

Basis of Presentation

Basis of Presentation

The condensed consolidated financial statements are prepared in conformity with accounting principles generally accepted in the United States (“GAAP”) for interim financial information. Certain information and footnotes normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). The financial statements include the consolidated accounts of the Company and its wholly-owned subsidiary, Onconova Europe GmbH. All significant intercompany transactions have been eliminated.

Unaudited Interim Financial Information

Unaudited Interim Financial Information

The accompanying condensed consolidated balance sheet as of March 31, 2020, the condensed consolidated statements of operations and comprehensive loss for the three months ended March 31, 2020 and 2019, the consolidated statements of stockholders’ equity (deficit) for the three months ended March 31, 2020 and 2019 and the condensed consolidated statements of cash flows for the three months ended March 31, 2020 and 2019 are unaudited. The interim unaudited condensed consolidated financial statements have been prepared on the same basis as the annual audited consolidated financial statements and, in the opinion of management, reflect all adjustments, which include only normal recurring adjustments, necessary for the fair statement of the Company’s financial position as of March 31, 2020, the results of its operations for the three months ended March 31, 2020 and 2019, and its cash flows for the three months ended March 31, 2020 and 2019. The financial data and other information disclosed in these notes related to the three months ended March 31, 2020 and 2019 are unaudited. The results for the three months ended March 31, 2020 are not necessarily indicative of results to be expected for the year ending December 31, 2019, any other interim periods, or any future year or period.  These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the notes thereto for the year ended December 31, 2019 included in the Company’s annual report on Form 10-K filed with the SEC on March 27, 2020.

Segment Information

Segment Information

Operating segments are defined as components of an enterprise about which separate discrete information is available for evaluation by the chief operating decision maker, or decision-making group, in deciding how to allocate resources and in assessing performance. The Company views its operations and manages its business in one segment, which is the identification and development of oncology therapeutics.

Significant Accounting Policies

Significant Accounting Policies

The Company’s significant accounting policies are disclosed in the audited consolidated financial statements for the year ended December 31, 2019 included in the Company’s annual report on Form 10-K filed with the SEC on March 27, 2020. Since the date of such financial statements, there have been no changes to the Company’s significant accounting policies.

Fair Value Measurements

Fair Value Measurements

The carrying amounts reported in the accompanying consolidated financial statements for cash and cash equivalents, accounts payable, and accrued liabilities approximate their respective fair values because of the short-term nature of these accounts. The fair value of the warrant liability is discussed in Note 7, “Fair Value Measurements.”

Revenue Recognition

Revenue Recognition

The Company recognizes revenue in accordance with Accounting Standards Codification Topic 606, Revenue from Contracts with Customers (ASC 606), which the Company adopted effective January 1, 2018 using the modified retrospective method. There was no material impact to our financial position and results of operations as a result of the adoption. The Company applies ASC 606 to all contracts with customers, except for contracts that are within the scope of other standards, such as leases, insurance, collaboration arrangements and financial instruments. In accordance with ASC 606, the Company recognizes revenue when its customer obtains control of promised goods or services, in an amount that reflects the consideration which the Company expects to receive in exchange for those goods or services. To determine revenue recognition for arrangements that the Company determines are within the scope of ASC 606, the Company performs the following five steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the Company satisfies a performance obligation. The Company only applies the five-step model to contracts when it is probable that it will collect the consideration it is entitled to in exchange for the goods and services it transfers to the customer. At contract inception, the Company assesses the goods or services promised within each contract that falls under the scope of ASC 606, determines those that are performance obligations and assesses whether each promised good or service is distinct. The Company then recognizes as revenue the amount of the transaction price that is allocated to the respective performance obligation when (or as) the performance obligation is satisfied.

The Company derives revenue from collaboration and licensing agreements and from the sale of products associated with material transfer, collaboration and supply agreements.

License, Collaboration and Other Revenues

The Company enters into licensing and collaboration agreements, under which it licenses certain of its product candidates’ rights to third parties. The Company recognizes revenue related to these agreements in accordance with ASC 606. The terms of these arrangements typically include payment from third parties of one or more of the following: non-refundable, up-front license fees; development, regulatory and commercial milestone payments; and royalties on net sales of the licensed product.

In determining the appropriate amount of revenue to be recognized as it fulfills its obligation under each of its agreements, the Company performs the five steps described above. As part of the accounting for these arrangements, the Company must develop assumptions that require judgment to determine the stand-alone selling price, which may include forecasted revenues, development timelines, reimbursement of personnel costs, discount rates and probabilities of technical and regulatory success.

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

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

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

Royalties: For arrangements that include sales-based royalties, including milestone payments based on the level of sales, and for which the license is deemed to be the predominant item to which royalties relate, the Company recognizes revenue at the later of (i) when the related sales occur, or (ii) when the performance obligation to which some of all of the royalty has been allocated has been satisfied (or partially satisfied).  To date, the Company has not recognized any royalty revenue from its license agreements.

Leases

Leases

The Company accounts for leases in accordance with Accounting Standards Codification Topic 842, Leases (ASC 842), which the Company adopted effective January 1, 2019. The Company determines whether an arrangement is a lease at contract inception by establishing if the contract conveys the right to control the use of identified property, plant, or equipment for a period of time in exchange for consideration.

Right of Use (ROU) Assets and Lease Liabilities are recognized at the lease commencement date based on the present value of all minimum lease payments over the lease term. The Company uses its incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments, when the implicit rate is not readily determinable. Lease terms may include options to extend or terminate the lease. These options are included in the lease term when it is reasonably certain that the Company will exercise that option. Operating lease expense is recognized on a straight-line basis over the lease term.

The Company has elected the following policy elections on adoption: use of portfolio approach on leases of assets under master service agreements, exclusion of short term leases (term of 12 months or less) on the balance sheet, and not separating lease and non-lease components.

At January 1, 2019 and March 31, 2020 the Company had one lease, which was for office space. The lease qualifies for the short term lease exception. Consequently, no ROU Asset or Lease Liability was recorded. The lease payments are being  recognized as an expense on a straight-line basis over the lease term. Lease payments for the three months ended March 31, 2020 were $45,000. Remaining payments due under the lease at March 31, 2020 are $166,000.

Recent Accounting Pronouncements

Recent Accounting Pronouncements

In February 2016 and through subsequent amendments, the FASB issued guidance which supersedes much of the previous guidance for leases. The new guidance requires lessees to recognize a right-of-use asset and a lease liability on their balance sheets for all the leases with terms greater than twelve months. Based on certain criteria, leases are classified as either financing or operating, with classification affecting the pattern of expense recognition in the income statement. For leases with a term of twelve months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and lease liabilities. If a lessee makes this election, it should recognize lease expense for such leases generally on a straight-line basis over the lease term. The guidance was effective for fiscal years beginning after December 15, 2018, and interim periods within those years, with early adoption permitted. In transition, lessees and lessors were permitted to recognize and measure leases at the date of adoption using a modified retrospective approach. The modified retrospective approach includes a number of optional practical expedients primarily focused on leases that commenced before the effective date of the new guidance, including continuing to account for leases that commence before the effective date in accordance with previous guidance, unless the lease is modified. The Company adopted the guidance in ASC 842 effective January 1, 2019 using the modified retrospective method, which does not require the restatement of prior period amounts. There was no impact to the Company’s financial position and results of operations as a result of the adoption.

In August 2018, the FASB issued guidance which changes the disclosure requirements for fair value measurement. The guidance amends the disclosure requirements in ASC Topic 820 by adding, changing, or removing certain disclosures. The guidance is effective for fiscal years beginning after December 15, 2019. The Company adopted this guidance effective January 1, 2020. There was no impact to the Company’s financial position, results of operations or financial statement disclosures as a result of the adoption.

In November 2018, the FASB issued guidance, which clarifies the interaction between ASC Topic 808, Collaborative Arrangements , and ASC Topic 606,  Revenue from Contracts with Customers . The guidance, among other items, clarifies that certain transactions between collaborative participants should be accounted for as revenue under Topic 606 when the collaborative arrangement participant is a customer in the context of a unit of account. The guidance is effective for fiscal years beginning after December 15, 2019. The Company adopted this guidance effective January 1, 2020. There was no impact to the Company’s financial position and results of operations as a result of the adoption.

In June 2016, the FASB issued new guidance on the accounting for credit losses on financial instruments. The guidance was amended in November 2019. The new guidance introduces an expected loss model for estimating credit losses, replacing the incurred loss model. The new guidance also changes the impairment model for available-for-sale debt securities, requiring the use of an allowance to record estimated credit losses (and subsequent recoveries). The guidance is effective for fiscal years beginning after December 15, 2022, and interim periods within those years, with early adoption permitted. The Company is evaluating the impact of the adoption of the standard on its consolidated financial statements.

XML

Research Agreements

3 Months Ended

Mar. 31, 2020

Research Agreements

Research Agreements

9. Research Agreements

The Company has entered into various licensing and right-to-sublicense agreements with educational institutions for the exclusive use of patents and patent applications, as well as any patents that may develop from research being conducted by such educational institutions in the field of anticancer therapy, genes and proteins. Results from this research have been licensed to the Company pursuant to these agreements. Under one of these agreements with Temple University (“Temple”), the Company is required to make annual maintenance payments to Temple and royalty payments based upon a percentage of sales generated from any products covered by the licensed patents, with minimum specified royalty payments. As no sales had been generated through March 31, 2020 under the licensed patents, the Company has not incurred any royalty expenses related to this agreement. In addition, the Company is required to pay Temple a percentage of any sublicensing fees received by the Company.

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Warrants

3 Months Ended

Mar. 31, 2020

Warrants

Warrants

5. Warrants

Common Stock warrants are accounted for in accordance with applicable accounting guidance provided in ASC Topic 815, Derivatives and Hedging - Contracts in Entity’s Own Equity (ASC Topic 815), as either derivative liabilities or as equity instruments depending on the specific terms of the warrant agreement. Some of the Company’s warrants are classified as liabilities because in certain circumstances they could require cash settlement.

Warrants outstanding and warrant activity (reflects the number of common shares as if the warrants were converted to common stock) for the three months ended March 31, 2020 is as follows:

					Balance				Balance
		Exercise		Expiration	December 31,	Warrants	Warrants	Warrants	March 31,
Description	Classification	Price		Date	2019	Issued / Amended	Exercised	Expired/ Amended	2020
Non-tradable warrants	Liability	$	172.50	July 2021	6,456	—	—	—	6,456
Tradable warrants	Liability	$	73.80	July 2021	212,801	—	—	—	212,801
Non-tradable pre-funded warrants	Equity	$	0.15	July 2023	394	—	—	—	394
Non-tradable warrants	Equity	$	1.60	December 2022	392,834	—	—	—	392,834
Non-tradable warrants	Equity	$	14.10	March 2021	5,000	—	—	—	5,000
Non-tradable warrants	Equity	$	21.15	March 2021	8,333	—	—	—	8,333
Non-tradable warrants	Equity	$	7.7895	June 2021	15,000	—	—	—	15,000
Non-tradable pre-funded warrants	Equity	$	0.15	none	52,834	—	—	—	52,834
Non-tradable warrants	Equity	$	1.600	December 2022	1,806,104	—	—	—	1,806,104
Non-tradable pre-funded warrants	Equity	$	0.15	none	74,617	—	—	—	74,617
Non-tradable warrants	Equity	$	2.00	September 2023	109,585	—	—	—	109,585
Non-tradable pre-funded warrants	Equity	$	0.0001	none	1,250,000	—	—	—	1,250,000
Non-tradable warrants	Equity	$	0.20	November 2024	41,037,000	—	(28,586,200)	—	12,450,800
Non-tradable warrants	Equity	$	0.250	November 2024	2,521,875	—	—	—	2,521,875
Non-tradable warrants	Equity	$	0.287	December 2024	3,581,662	—	—	—	3,581,662
Non-tradable warrants	Equity	$	0.43625	December 2024	716,332	—	—	—	716,332
Non-tradable warrants	Equity	$	0.298	December 2024	3,469,716	—	—	—	3,469,716
Non-tradable warrants	Equity	$	0.45030	December 2024	693,943	—	—	—	693,943
Non-tradable warrants	Equity	$	0.45190	December 2023	—	1,383,126	—	—	1,383,126
					55,954,486	1,383,126	(28,586,200)	—	28,751,412

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Net Loss Per Share of Common Stock (Details) - shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Potentially dilutive securities outstanding excluded from the computation of diluted weighted average shares as they would be antidilutive
Potentially dilutive securities outstanding excluded from the computation of diluted weighted average shares	28,390,960	5,850,516
Warrants
Potentially dilutive securities outstanding excluded from the computation of diluted weighted average shares as they would be antidilutive
Potentially dilutive securities outstanding excluded from the computation of diluted weighted average shares	27,373,567	5,504,722
Stock options
Potentially dilutive securities outstanding excluded from the computation of diluted weighted average shares as they would be antidilutive
Potentially dilutive securities outstanding excluded from the computation of diluted weighted average shares	1,017,393	345,794

XML

Balance Sheet Detail - Accrued Expenses and Other Current Liabilities (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Balance Sheet Detail
Research and development	$ 1,863,000	$ 2,016,000
Employee compensation	526,000	1,537,000
Professional fees	112,000	242,000
Accrued expenses and other current liabilities:	$ 2,501,000	$ 3,795,000

XML

Fair Value Measurements - Fair Value Hierarchy Table (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Liabilities measured at fair value
Warrant liability	$ 176,000	$ 113,000
Recurring basis
Liabilities measured at fair value
Total	176,000	113,000
Recurring basis | Tradable warrants liability
Liabilities measured at fair value
Warrant liability	176,000	113,000
Recurring basis | Level 1
Liabilities measured at fair value
Total	176,000	113,000
Recurring basis | Level 1 | Tradable warrants liability
Liabilities measured at fair value
Warrant liability	$ 176,000	$ 113,000

XML

Securities Registrations and Sales Agreements - Underwriting agreement with HCW (Details) - USD ($)								1 Months Ended
	Jan. 03, 2020	Dec. 31, 2019	Dec. 19, 2019	Dec. 10, 2019	Sep. 25, 2019	Jul. 29, 2016	Jan. 05, 2016	Nov. 30, 2019
Subsidiary, Sale of Stock [Line Items]
Issuance of common stock, net (in shares)	27,662,518		13,878,864	14,326,648	2,198,938	239,986	12,912	30,250,000
Warrant exercise price (in dollars per share)						$ 73.80
HCW
Subsidiary, Sale of Stock [Line Items]
Warrant exercise price (in dollars per share)		$ 0.4519
Percentage of cash fees on gross proceeds		7.00%
Percentage of management fees on gross proceeds		1.00%
Payment of Non-accountable Expenses		$ 85,000
Payment of Clearing Fees		$ 10,000
Warrants issued to purchase of common stock		1,383,126
Proceeds from issuance of warrants		$ 9,000,000
The Offering | Certain institutional and accredited investors
Subsidiary, Sale of Stock [Line Items]
Issuance of common stock, net (in shares)		27,662,518
The Offering | Certain institutional and accredited investors | Common Stock Warrants
Subsidiary, Sale of Stock [Line Items]
Warrant exercise price (in dollars per share)		$ 0.3615

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Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2020	Dec. 31, 2019
Condensed Consolidated Balance Sheets
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	250,000,000	250,000,000
Common stock, shares issued	167,416,070	111,167,352
Common stock, shares outstanding	167,416,070	111,167,352

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Condensed Consolidated Statements of Cash Flows - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating activities:
Net loss	$ (5,092,000)	$ (7,600,000)
Adjustment to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	3,000	8,000
Change in fair value of warrant liabilities	63,000	427,000
Stock compensation expense	93,000	650,000
Changes in assets and liabilities:
Receivables	53,000
Prepaid expenses and other current assets	(145,000)
Accounts payable	(88,000)	295,000
Accrued expenses and other current liabilities	(1,294,000)	(324,000)
Deferred revenue	(56,000)	(57,000)
Net cash used in operating activities	(6,463,000)	(6,601,000)
Financing activities:
Proceeds from the sale of common stock and warrants, net of costs	9,062,000
Proceeds from the exercise of warrants	5,717,000	33,000
Net cash provided by financing activities	14,779,000	33,000
Effect of foreign currency translation on cash	(6,000)	(6,000)
Net increase (decrease) in cash and cash equivalents	8,310,000	(6,574,000)
Cash and cash equivalents at beginning of period	22,726,000	16,970,000
Cash and cash equivalents at end of period	$ 31,036,000	$ 10,396,000

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Stock-Based Compensation - Activity (Details) - Stock options - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2018
Shares Available for Grant
Granted (in shares)	34,750
Cancelled (in shares)	(11,810)
Balance at the end of the period (in shares)	36,791	59,731
Number of Shares
Granted (in shares)	34,750
Forfeitures (in shares)	(11,810)
Cancelled (in shares)	(11,810)
Balance at the end of the period (in shares)	1,017,393	994,453
Vested or expected to vest at the end of the period (in shares)	985,933
Exercisable at the end of the period (in shares)	257,495
Weighted-Average Exercise Price
Granted (in dollars per share)	$ 0.303
Forfeitures (in dollars per share)	29.99
Balance at the end of the period (in dollars per share)	25.22	$ 27.37
Vested or expected to vest at the end of the period (in dollars per share)	95.98
Exercisable at the end of the period (in dollars per share)	$ 95.98
Additional Disclosures
Weighted average remaining contractual term	9 years 1 month 13 days	9 years 3 months 26 days
Weighted average remaining contractual term of options forfeitures	1 year 9 months 7 days
Weighted average remaining contractual term of options granted	10 years
Weighted average remaining contractual term of options vested or expected to vest	7 years 9 months 22 days
Weighted average remaining contractual term of options exercisable	7 years 9 months 22 days
Aggregate intrinsic value of options outstanding	$ 0	$ 0
Aggregate intrinsic value of options vested or expected to vest	0
Aggregate intrinsic value of options exercisable	$ 0

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Research Agreements (Details)	3 Months Ended
	Mar. 31, 2020 USD ($)
Research agreements
Research Agreements
Revenue	$ 0

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Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2020

Stock-Based Compensation

Schedule of stock-based compensation expense

	Three Months ended March 31,
	2020		2019
General and administrative	$	45,000	$	538,000
Research and development		48,000		112,000
	$	93,000	$	650,000

Schedule of stock option activity

		Options Outstanding
					Weighted
			Weighted-		Average
	Shares		Average		Remaining	Aggregate
	Available	Number of	Exercise		Contractual	Intrinsic
	for Grant	Shares	Price		Term (in years)	Value
Balance, December 31, 2019	59,731	994,453	$	27.37	9.32	$	0
Authorized	—	—
Granted	(34,750)	34,750	$	0.303	10.00
Exercised	—	—	$	—
Forfeitures	11,810	(11,810)	$	29.99	1.77
Balance, March 31, 2020	36,791	1,017,393	$	25.22	9.12	$	0
Vested or expected to vest, March 31, 2020		985,933	$	95.98	7.81	$	0
Exercisable at March 31, 2020		257,495	$	95.98	7.81	$	0

Schedule of information with respect to stock options outstanding and exercisable

Information with respect to stock options outstanding and exercisable at March 31, 2020 is as follows:

Exercise Price	Shares	Exercisable
$0.30 - $0.31	629,750	—
$3.39 – $3.72	51,998	7,000
$4.34 – $7.05	269,913	187,500
$16.35 – $97.50	48,133	45,410
$222.00 - $225.00	1,871	1,871
$348.00 – $597.00	4,867	4,866
$651.00 – $1,129.50	3,616	3,603
$1,992.00 - $2,268.00	6,910	6,910
$4,156.50 - $4,371.00	335	335
	1,017,393	257,495

Schedule of weighted-average assumptions used for estimating the fair value of the stock compensation granted

	Three Months ended March 31,
	2020				2019
Risk-free interest rate		0.46	%		1.92	%
Expected volatility		105.30	%		82.58	%
Expected term		6.00 years			5.85 years
Expected dividend yield		0	%		0	%
Weighted average grant date fair value	$	0.24		$	1.81

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Net Loss Per Share of Common Stock (Tables)

3 Months Ended

Mar. 31, 2020

Net Loss Per Share of Common Stock

Schedule of antidilutive securities which have been excluded from the computation of diluted weighted average shares outstanding

	March 31,
	2020	2019
Warrants	27,373,567	5,504,722
Stock options	1,017,393	345,794
	28,390,960	5,850,516

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Balance Sheet Detail - Prepaid Expenses and Other Current Assets (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Prepaid expenses and other current assets:
Research and development	$ 366,000	$ 321,000
Manufacturing	39,000	25,000
Insurance	168,000	164,000
Other	222,000	140,000
Prepaid expenses and other current assets	$ 795,000	$ 650,000

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Fair Value Measurements - Rights Offering (Details) - $ / shares							1 Months Ended
	Jan. 03, 2020	Dec. 19, 2019	Dec. 10, 2019	Sep. 25, 2019	Jul. 29, 2016	Jan. 05, 2016	Nov. 30, 2019
Subsidiary, Sale of Stock [Line Items]
Issuance of common stock, net (in shares)	27,662,518	13,878,864	14,326,648	2,198,938	239,986	12,912	30,250,000
Rights or warrants issued (in shares)					212,801
Exercise price (in dollars per share)					$ 73.80
Class Of Warrant Or Right Initially Exercisable Term					5 years
Redemption period (in years)					1 year
Redemption price (in dollars per share)					$ 0.001
Volume weighted average price per share of common stock (in dollars per share)					$ 184.50
Threshold consecutive trading days (in days)					10 days
Pre-funded warrants
Subsidiary, Sale of Stock [Line Items]
Rights or warrants issued (in shares)					43,760

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Fair Value Measurements

3 Months Ended

Mar. 31, 2020

Fair Value Measurements

Fair Value Measurements

7. Fair Value Measurements

Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date.

The Company utilizes a valuation hierarchy for disclosure of the inputs to the valuations used to measure fair value. This hierarchy prioritizes the inputs into three broad levels as follows. Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument. Level 3 inputs are unobservable inputs based on the Company’s own assumptions used to measure assets and liabilities at fair value. A financial asset or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement.

On January 5, 2016, the Company entered into a securities purchase agreement (the “Securities Purchase Agreement”) with an institutional investor providing for the issuance and sale by the Company of 12,912 shares of Common Stock, at a purchase price of $142.50 per share and warrants to purchase up to 6,456 shares of Common Stock (the “Warrants”) for aggregate gross proceeds of $1,840,000.  The Company has classified the warrants as a liability (see Note 5). The estimated  fair value using the Black-Scholes pricing model was approximately $0 at March 31, 2020 and December 31, 2019.

On July 29, 2016 the Company closed on a Rights Offering, issuing 239,986 shares of Common Stock, 212,801 Tradable Warrants and 43,760 Pre-Funded Warrants. The Tradable Warrants are exercisable for a period of five years for one share of Common Stock at an exercise price of $73.80 per share. After the one-year anniversary of issuance, the Company may redeem the Tradable Warrants for $0.001 per Tradable Warrant if the volume weighted average price of its Common Stock is above $184.50 for each of 10 consecutive trading days. The Company has classified the Tradable Warrants as a liability (see Note 5). The Tradable Warrants have been listed on the Nasdaq Capital Market since issuance and the Company regularly monitors the trading activity. The Company has determined that an active and orderly market for the Tradable Warrants has developed and that the Nasdaq Capital Market price is the best indicator of fair value of the warrant liability. The quoted market price was used to determine the fair value at December 31, 2019 and March 31, 2020.

The Company estimated the fair value of the non-tradable warrant liability at March 31, 2020, using the Black-Scholes option pricing model with the following weighted-average assumptions:

Risk-free interest rate	0.20	%
Expected volatility	82.18	%
Expected term	1.33 years
Expected dividend yield	0	%

Expected volatility is based on the historical volatility of the Company’s Common Stock since its IPO in July 2013.

The following fair value hierarchy table presents information about the Company’s financial assets and liabilities measured at fair value on a recurring basis as of March 31, 2020 and December 31, 2019:

	Fair Value Measurement as of:
	March 31, 2020								December 31, 2019
	Level 1		Level 2		Level 3		Balance		Level 1		Level 2		Level 3		Balance
Tradable warrants liability	$	176,000	$	—	$	—	$	176,000	$	113,000	$	—	$	—	$	113,000
Non-tradable warrants liability		—		—		—		—		—		—		—		—
Total	$	176,000	$	—	$	—	$	176,000	$	113,000	$	—	$	—	$	113,000

There were no transfers between Level 1 and Level 2 in any of the periods reported.

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Revenue

3 Months Ended

Mar. 31, 2020

Revenue.

Revenue

3. Revenue

The Company’s revenue during the three ended March 31, 2020 and 2019 was from its license and collaboration agreement with SymBio.

	Three Months Ended March 31,
	2020		2019
Symbio
Upfront license fee recognition over time	$	56,000	$	57,000
Supplies and other		(4,000)		11,000
	$	52,000	$	68,000

Deferred revenue is as follows:

	Symbio
	Upfront Payment
Deferred balance at December 31, 2019	$	3,921,000
Recognition to revenue		56,000
Deferred balance at March 31, 2020	$	3,865,000

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Related-Party Transactions

3 Months Ended

Mar. 31, 2020

Related-Party Transactions

Related-Party Transactions

11. Related-Party Transactions

The Company has entered into a research agreement, as subsequently amended, with the Mount Sinai School of Medicine (“Mount Sinai”), with which a member of its board of directors and a stockholder is affiliated. Mount Sinai is undertaking research on behalf of the Company on the terms set forth in the agreements. Mount Sinai, in collaboration with the Company, will prepare applications for patents generated from the research. Results from all projects will belong exclusively to Mount Sinai, but the Company will have an exclusive option to license any inventions, resulting therefrom. Payments to Mount Sinai under this research agreement for the three months ended March 31, 2020 and 2019 were $124,000 and $88,000, respectively. At March 31, 2020 and December 31, 2019, the Company had $124,000 and $150,000, respectively, payable to Mount Sinai under this agreement.

The Company has entered into a consulting agreement with a member of its board of directors. The board member provides consulting services to the Company on the terms set forth in the agreement. Payments to this board member for both the three months ended March 31, 2020 and 2019 were $33,000. At both March 31, 2020 and December 31, 2019, the Company had $33,000 payable under this agreement.

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Warrants (Details) - $ / shares								1 Months Ended	3 Months Ended
	Jan. 03, 2020	Dec. 31, 2019	Dec. 19, 2019	Dec. 10, 2019	Sep. 25, 2019	Jul. 29, 2016	Jan. 05, 2016	Nov. 30, 2019	Mar. 31, 2020
Warrants
Warrant exercise price (in dollars per share)						$ 73.80
Warrants outstanding and warrant activity
Balance at beginning of the period (in shares)									55,954,486
Warrants Issued (in shares)									1,383,126
Warrants Exercised (in shares)									(28,586,200)
Balance at end of the period (in shares)		55,954,486							28,751,412
Common Stock authorized (in shares)		250,000,000							250,000,000
Issuance of stock (in shares)	27,662,518		13,878,864	14,326,648	2,198,938	239,986	12,912	30,250,000
Non-tradable warrants with exercise price 172.50 Liability
Warrants
Warrant exercise price (in dollars per share)									$ 172.50
Warrants outstanding and warrant activity
Balance at beginning of the period (in shares)									6,456
Balance at end of the period (in shares)		6,456							6,456
Tradable warrants with exercise price 73.80 Liability
Warrants
Warrant exercise price (in dollars per share)									$ 73.80
Warrants outstanding and warrant activity
Balance at beginning of the period (in shares)									212,801
Balance at end of the period (in shares)		212,801							212,801
Non-tradable warrants with exercise price 0.15 Equity
Warrants
Warrant exercise price (in dollars per share)									$ 0.15
Warrants outstanding and warrant activity
Balance at beginning of the period (in shares)									394
Balance at end of the period (in shares)		394							394
Non-tradable warrants with exercise price 1.60 Equity
Warrants
Warrant exercise price (in dollars per share)									$ 1.60000
Warrants outstanding and warrant activity
Balance at beginning of the period (in shares)									392,834
Balance at end of the period (in shares)		392,834							392,834
Non-tradable warrants with exercise price 14.10 Equity
Warrants
Warrant exercise price (in dollars per share)									$ 14.10
Warrants outstanding and warrant activity
Balance at beginning of the period (in shares)									5,000
Balance at end of the period (in shares)		5,000							5,000
Non-tradable warrants with exercise price 21.15 Equity
Warrants
Warrant exercise price (in dollars per share)									$ 21.15000
Warrants outstanding and warrant activity
Balance at beginning of the period (in shares)									8,333
Balance at end of the period (in shares)		8,333							8,333
Non-tradable warrants with exercise price 7.7895 Equity
Warrants
Warrant exercise price (in dollars per share)									$ 7.7895
Warrants outstanding and warrant activity
Balance at beginning of the period (in shares)									15,000
Balance at end of the period (in shares)		15,000							15,000
Non-tradable pre-funded warrants with exercise Price 0.15 Equity
Warrants
Warrant exercise price (in dollars per share)									$ 0.15
Warrants outstanding and warrant activity
Balance at beginning of the period (in shares)									52,834
Balance at end of the period (in shares)		52,834							52,834
Non-tradable warrants with exercise price 1.6000 Equity
Warrants
Warrant exercise price (in dollars per share)									$ 1.600
Warrants outstanding and warrant activity
Balance at beginning of the period (in shares)									1,806,104
Balance at end of the period (in shares)		1,806,104							1,806,104
Non-tradable pre-funded warrants with exercise Price 0.15 Equity1
Warrants
Warrant exercise price (in dollars per share)									$ 0.1500
Warrants outstanding and warrant activity
Balance at beginning of the period (in shares)									74,617
Balance at end of the period (in shares)		74,617							74,617
Non-tradable warrants with exercise price 2.00 Equity
Warrants
Warrant exercise price (in dollars per share)									$ 2.00
Warrants outstanding and warrant activity
Balance at beginning of the period (in shares)									109,585
Balance at end of the period (in shares)		109,585							109,585
Non-tradable pre-funded warrants with exercise Price 0.0001 Equity
Warrants
Warrant exercise price (in dollars per share)									$ 0.0001
Warrants outstanding and warrant activity
Balance at beginning of the period (in shares)									1,250,000
Balance at end of the period (in shares)		1,250,000							1,250,000
Non-tradable warrants with exercise price 0.20 Equity
Warrants
Warrant exercise price (in dollars per share)									$ 0.200
Warrants outstanding and warrant activity
Balance at beginning of the period (in shares)									41,037,000
Warrants Exercised (in shares)									(28,586,200)
Balance at end of the period (in shares)		41,037,000							12,450,800
Non-tradable warrants with exercise price 0.250 Equity
Warrants
Warrant exercise price (in dollars per share)									$ 0.250
Warrants outstanding and warrant activity
Balance at beginning of the period (in shares)									2,521,875
Balance at end of the period (in shares)		2,521,875							2,521,875
Non-tradable warrants with exercise price 0.287 Equity
Warrants
Warrant exercise price (in dollars per share)									$ 0.287
Warrants outstanding and warrant activity
Balance at beginning of the period (in shares)									3,581,662
Balance at end of the period (in shares)		3,581,662							3,581,662
Non-tradable warrants with exercise price 0.43625 Equity
Warrants
Warrant exercise price (in dollars per share)									$ 0.43625
Warrants outstanding and warrant activity
Balance at beginning of the period (in shares)									716,332
Balance at end of the period (in shares)		716,332							716,332
Non-tradable warrants with exercise price 0.298 Equity
Warrants
Warrant exercise price (in dollars per share)									$ 0.298
Warrants outstanding and warrant activity
Balance at beginning of the period (in shares)									3,469,716
Balance at end of the period (in shares)		3,469,716							3,469,716
Non-tradable warrants with exercise price 0.45030 Equity
Warrants
Warrant exercise price (in dollars per share)									$ 0.45030
Warrants outstanding and warrant activity
Balance at beginning of the period (in shares)									693,943
Balance at end of the period (in shares)		693,943							693,943
Non-tradable Warrants with Exercise Price 0.45190 Equity
Warrants
Warrant exercise price (in dollars per share)									$ 0.45190
Warrants outstanding and warrant activity
Warrants Issued (in shares)									1,383,126
Balance at end of the period (in shares)									1,383,126

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Fair Value Measurements (Details) - USD ($)							1 Months Ended
	Jan. 03, 2020	Dec. 19, 2019	Dec. 10, 2019	Sep. 25, 2019	Jul. 29, 2016	Jan. 05, 2016	Nov. 30, 2019	Mar. 31, 2020	Dec. 31, 2019
Sale of Securities
Issuance of common stock, net (in shares)	27,662,518	13,878,864	14,326,648	2,198,938	239,986	12,912	30,250,000
Price per share (in dollars per share)						$ 142.50
Stock called by warrants or rights		6,939,432	7,163,324	2,198,938		6,456	55,000,000	28,586,200
ProceedsFromIssuanceOrSaleOfEquity						$ 1,840,000
Estimated fair value using the Black-Scholes pricing model								$ 0	$ 0

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Securities Registrations and Sales Agreements

3 Months Ended

Mar. 31, 2020

Securities Registrations and Sales Agreements

Securities Registrations and Sales Agreements

12. Securities Registrations and Sales Agreements

January 2020 Offering

On December 31, 2019, the Company entered into definitive securities purchase agreements with institutional investors for the issuance and sale in a registered direct offering of 27,662,518 shares of the Company's common stock at an offering price of $0.3615 per share.

Pursuant to the December 2019 HCW Engagement Letter, HCW agreed to serve as exclusive placement agent for the offering. In connection with the offering, the Company paid HCW an aggregate cash fee equal to 7.0% of the gross proceeds in the offering, management fee equal to 1.0% of the gross proceeds raised in the offering, $85,000 for non-accountable expenses; and $10,000 for clearing fees. The Company also issued to HCW or its designees placement agent warrant to purchase up to 1,383,126 shares of common stock at an exercise price of $0.4519 per share. The placement agent warrants are immediately exercisable and will expire on December 31, 2023.

The net proceeds to the Company from the offering, after deducting HCW's placement agent fees and expenses and other estimated offering expenses payable by the Company were approximately $9.0 million and were received in January 2020.

The offering was pursuant to a prospectus dated December 28, 2017, and a prospectus supplement dated as of December 31, 2019 to be filed in connection with a takedown from the Company's shelf registration statement on Form S-3 (File No. 333-221684). The offering closed on January 3, 2020.

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Stock-Based Compensation

3 Months Ended

Mar. 31, 2020

Stock-Based Compensation

Stock-Based Compensation

8. Stock-Based Compensation

The 2007 Equity Compensation Plan as amended (the “2007 Plan”), amended, restated and renamed the Company’s 1999 Stock Based Compensation Plan (the “1999 Plan”), which provided for the granting of incentive and nonqualified stock options and restricted stock to its employees, directors and consultants at the discretion of the board of directors.

The 2013 Equity Compensation Plan (the “2013 Plan”), amended, restated and renamed the 2007 Plan. Under the 2013 Plan, the Company may grant incentive stock options, non-statutory stock options, stock appreciation rights, restricted stock, restricted stock units, deferred share awards, performance awards and other equity-based awards to employees, directors and consultants. The Company initially reserved 40,718 shares of Common Stock for issuance, subject to adjustment as set forth in the 2013 Plan. The 2013 Plan included an evergreen provision, pursuant to which the maximum aggregate number of shares that may be issued under the 2013 Plan is increased on the first day of each fiscal year by the lesser of (a) a number of shares equal to four percent (4%) of the issued and outstanding Common Stock of the Company, without duplication, (b) 13,333 shares and (c) such lesser number as determined by the Company’s board of directors, subject to specified limitations.

The 2018 Omnibus Incentive Compensation Plan (the “2018 Plan”) was unanimously approved by the Company’s Board of Directors on May 24, 2018 and was approved by the Company’s stockholders on June 27, 2018. The 2018 Plan replaces the 2013 Plan. Upon stockholders’ approval of the 2018 Plan, no further awards will be made under the 2013 Plan. Awards granted under the 2013 Plan will continue in effect in accordance with the terms of the applicable award agreement and the terms of the 2013 Plan in effect when the awards were granted.

Under the 2018 Plan, the Company may grant incentive stock options, non-qualified stock options, stock awards, stock units, stock appreciation rights and other stock-based awards to employees, non-employee directors and consultants, and advisors. The maximum aggregate number of shares of the Company’s common stock that may be issued under the 2018 Plan is 402,354, which is equal to the sum of (i) 400,000 shares of the Company’s common stock, plus (ii) 2,354 shares, which is the number of shares of the Company common stock reserved for issuance under the 2013 Plan that remained available as of the effective date of the 2018 Plan. In addition, the number of shares of common stock subject to outstanding awards under the 2013 Plan that terminate, expire, or are cancelled, forfeited, exchanged, or surrendered without having been exercised, vested, or paid in shares under the 2013 Plan after the effective date of the 2018 Plan will be available for issuance under the 2018 Plan.

The 2018 Plan was amended following unanimous approval of the Company’s Board of Directors on April 24, 2019 and was approved by the Company’s shareholders on June 17, 2019. The amended 2018 Plan (the “Amended Plan”) allowed for an additional 589,500 shares of the Company’s common stock that may be issued under the Amended Plan with respect to awards made on and after June 17, 2019. At March 31, 2020, there were 36,791 shares available for future issuance.

Stock-based compensation expense includes stock options granted to employees and non-employees and has been reported in the Company’s statements of operations and comprehensive loss in either research and development expenses or general and administrative expenses depending on the function performed by the optionee. No net tax benefits related to the stock-based compensation costs have been recognized since the Company’s inception. The Company recognized stock-based compensation expense as follows for the three ended March 31, 2020 and 2019:

	Three Months ended March 31,
	2020		2019
General and administrative	$	45,000	$	538,000
Research and development		48,000		112,000
	$	93,000	$	650,000

A summary of stock option activity for the three months ended March 31, 2020 is as follows:

		Options Outstanding
					Weighted
			Weighted-		Average
	Shares		Average		Remaining	Aggregate
	Available	Number of	Exercise		Contractual	Intrinsic
	for Grant	Shares	Price		Term (in years)	Value
Balance, December 31, 2019	59,731	994,453	$	27.37	9.32	$	0
Authorized	—	—
Granted	(34,750)	34,750	$	0.303	10.00
Exercised	—	—	$	—
Forfeitures	11,810	(11,810)	$	29.99	1.77
Balance, March 31, 2020	36,791	1,017,393	$	25.22	9.12	$	0
Vested or expected to vest, March 31, 2020		985,933	$	95.98	7.81	$	0
Exercisable at March 31, 2020		257,495	$	95.98	7.81	$	0

Information with respect to stock options outstanding and exercisable at March 31, 2020 is as follows:

Exercise Price	Shares	Exercisable
$0.30 - $0.31	629,750	—
$3.39 – $3.72	51,998	7,000
$4.34 – $7.05	269,913	187,500
$16.35 – $97.50	48,133	45,410
$222.00 - $225.00	1,871	1,871
$348.00 – $597.00	4,867	4,866
$651.00 – $1,129.50	3,616	3,603
$1,992.00 - $2,268.00	6,910	6,910
$4,156.50 - $4,371.00	335	335
	1,017,393	257,495

The Company uses the Black-Scholes option-pricing model to estimate the fair value of stock options at the grant date. The Black-Scholes model requires the Company to make certain estimates and assumptions, including estimating the fair value of the Company’s Common Stock, assumptions related to the expected price volatility of the Common Stock, the period during which the options will be outstanding, the rate of return on risk-free investments and the expected dividend yield for the Company’s stock.

As of March 31, 2020, there was $613,000 of unrecognized compensation expense related to the unvested stock options issued from April 24, 2013 through March 31, 2020, which is expected to be recognized over a weighted-average period of approximately 2.32 years.

The weighted-average assumptions underlying the Black-Scholes calculation of grant date fair value include the following:

	Three Months ended March 31,
	2020				2019
Risk-free interest rate		0.46	%		1.92	%
Expected volatility		105.30	%		82.58	%
Expected term		6.00 years			5.85 years
Expected dividend yield		0	%		0	%
Weighted average grant date fair value	$	0.24		$	1.81

The weighted-average valuation assumptions were determined as follows:

· Risk-free interest rate: The Company based the risk-free interest rate on the interest rate payable on U.S. Treasury securities in effect at the time of grant for a period that is commensurate with the assumed expected option term.

· Expected term of options: Due to its lack of sufficient historical data, the Company estimates the expected life of its employee stock options using the “simplified” method, as prescribed in Staff Accounting Bulletin (SAB) No. 107, whereby the expected life equals the arithmetic average of the vesting term and the original contractual term of the option.

· Expected stock price volatility:  Expected volatility is based on the historical volatility of the Company’s Common Stock since its IPO in July 2013.

· Expected annual dividend yield: The Company has never paid, and does not expect to pay, dividends in the foreseeable future. Accordingly, the Company assumed an expected dividend yield of 0.0%.  

· Expected Forfeiture rate: The Company’s estimated annual forfeiture rate on stock option grants was 4.14% in 2020 and 2019, based on the historical forfeiture experience.

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Net Loss Per Share of Common Stock

3 Months Ended

Mar. 31, 2020

Net Loss Per Share of Common Stock

Net Loss Per Share of Common Stock

4. Net Loss Per Share of Common Stock

The following potentially dilutive securities outstanding at March 31, 2020 and 2019 have been excluded from the computation of diluted weighted average shares outstanding, as they would be antidilutive (reflects the number of common shares as if the dilutive securities had been converted to common stock):

	March 31,
	2020	2019
Warrants	27,373,567	5,504,722
Stock options	1,017,393	345,794
	28,390,960	5,850,516

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Condensed Consolidated Balance Sheets - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 31,036,000	$ 22,726,000
Receivables	45,000	98,000
Prepaid expenses and other current assets	795,000	650,000
Total current assets	31,876,000	23,474,000
Property and equipment, net	47,000	50,000
Other non-current assets	150,000	150,000
Total assets	32,073,000	23,674,000
Current liabilities:
Accounts payable	4,183,000	4,271,000
Accrued expenses and other current liabilities	2,501,000	3,795,000
Deferred revenue	226,000	226,000
Total current liabilities	6,910,000	8,292,000
Warrant liability	176,000	113,000
Deferred revenue, non-current	3,639,000	3,695,000
Total liabilities	10,725,000	12,100,000
Commitments and contingencies
Stockholders' equity:
Preferred stock, $0.01 par value, 5,000,000 authorized at March 31, 2020 and December 31, 2019, none issued and outstanding at March 31, 2020 and December 31, 2019
Common stock, $0.01 par value, 250,000,000 authorized at March 31, 2020 and December 31, 2019, 167,416,070 and 111,167,352 shares issued and outstanding at March 31, 2020 and December 31, 2019	1,674,000	1,112,000
Additional paid in capital	428,189,000	413,879,000
Accumulated other comprehensive loss	(24,000)	(18,000)
Accumulated deficit	(408,491,000)	(403,399,000)
Total stockholders' equity	21,348,000	11,574,000
Total liabilities and stockholders' equity	$ 32,073,000	$ 23,674,000

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Consolidated Statement of Stockholders' Equity (Deficit) - USD ($)	Common Stock	Additional Paid in Capital	Accumulated deficit	Accumulated other comprehensive loss	Total
Balance at Dec. 31, 2018	$ 57,000	$ 387,238,000	$ (381,896,000)	$ (12,000)	$ 5,387,000
Balance (in shares) at Dec. 31, 2018	5,674,220
Increase (Decrease) in Stockholders' Equity (Deficit)
Net loss			(7,600,000)		(7,600,000)
Other comprehensive loss				(6,000)	(6,000)
Stock-based compensation		650,000			650,000
Issuance of common stock upon exercise of warrants	$ 2,000	31,000			33,000
Issuance of common stock upon exercise of warrants (in shares)	220,784
Balance at Mar. 31, 2019	$ 59,000	387,919,000	(389,496,000)	(18,000)	(1,536,000)
Balance (in shares) at Mar. 31, 2019	5,895,004
Balance at Dec. 31, 2019	$ 1,112,000	413,879,000	(403,399,000)	(18,000)	$ 11,574,000
Balance (in shares) at Dec. 31, 2019	111,167,352				111,167,352
Increase (Decrease) in Stockholders' Equity (Deficit)
Net loss			(5,092,000)		$ (5,092,000)
Other comprehensive loss				(6,000)	(6,000)
Stock-based compensation		93,000			93,000
Issuance of common stock, Net	$ 276,000	8,786,000			9,062,000
Issuance of common stock, net (in shares)	27,662,518
Issuance of common stock upon exercise of warrants	$ 286,000	5,431,000			5,717,000
Issuance of common stock upon exercise of warrants (in shares)	28,586,200
Balance at Mar. 31, 2020	$ 1,674,000	$ 428,189,000	$ (408,491,000)	$ (24,000)	$ 21,348,000
Balance (in shares) at Mar. 31, 2020	167,416,070				167,416,070

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Stock-Based Compensation - Expense (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Stock-Based Compensation
Net tax benefits related to the stock-based compensation costs	$ 0
Total stock-based compensation	93,000	$ 650,000
General and administrative
Stock-Based Compensation
Total stock-based compensation	45,000	538,000
Research and development
Stock-Based Compensation
Total stock-based compensation	$ 48,000	$ 112,000

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Stock-Based Compensation - Fair Value Assumptions (Details) - Stock options - $ / shares	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Assumptions used
Risk-free interest rate (as a percent)	0.46%	1.92%
Expected volatility (as a percent)	105.30%	82.58%
Expected term (in years)	6 years	5 years 10 months 6 days
Expected dividend yield (as a percent)	0.00%	0.00%
Weighted average grant date fair value (in dollars per share)	$ 0.24	$ 1.81
Annualized forfeiture rate (as a percent)			4.14%	4.14%

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Nature of Business - Liquidity (Details)							1 Months Ended	3 Months Ended		12 Months Ended
	Jan. 03, 2020 USD ($) shares	Dec. 19, 2019 USD ($) shares	Dec. 10, 2019 USD ($) shares	Sep. 25, 2019 USD ($) shares	Jul. 29, 2016 shares	Jan. 05, 2016 $ / shares shares	Nov. 30, 2019 USD ($) shares	Mar. 31, 2020 USD ($) shares	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($) shares	Dec. 31, 2018 USD ($)
Liquidity
Net loss								$ (5,092,000)	$ (7,600,000)
Accumulated deficit								408,491,000		$ 403,399,000
Cash and cash equivalents								$ 31,036,000	10,396,000	$ 22,726,000	$ 16,970,000
Common stock outstanding (in shares) | shares								167,416,070		111,167,352
Proceeds from the sale of common stock and warrants, net of costs	$ 9,000,000	$ 4,400,000	$ 4,400,000	$ 3,300,000			$ 9,700,000	$ 9,062,000
Proceeds from the exercise of warrants								$ 5,717,000	$ 33,000	$ 4,900,000
Proceeds from the exercise of pre-funded warrants										$ 35,000
Issuance of common stock, net (in shares) | shares	27,662,518	13,878,864	14,326,648	2,198,938	239,986	12,912	30,250,000
Stock called by warrants or rights | shares		6,939,432	7,163,324	2,198,938		6,456	55,000,000	28,586,200
Price per share (in dollars per share) | $ / shares						$ 142.50
FTE positions eliminated									6
FTE eliminated positions (as percent of workforce)									24.00%
Severance charge									$ 1,843,000
Non-cash charge, accelerated options									415,000
General and administrative
Liquidity
Severance charge									1,562,000
Research and development
Liquidity
Severance charge									$ 281,000
Pre-funded warrants
Liquidity
Stock called by warrants or rights | shares							24,750,000			23,720,784
Warrants
Liquidity
Stock called by warrants or rights | shares										21,014,378

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Warrants (Tables)

3 Months Ended

Mar. 31, 2020

Warrants

Schedule of warrants outstanding and warrant activity

					Balance				Balance
		Exercise		Expiration	December 31,	Warrants	Warrants	Warrants	March 31,
Description	Classification	Price		Date	2019	Issued / Amended	Exercised	Expired/ Amended	2020
Non-tradable warrants	Liability	$	172.50	July 2021	6,456	—	—	—	6,456
Tradable warrants	Liability	$	73.80	July 2021	212,801	—	—	—	212,801
Non-tradable pre-funded warrants	Equity	$	0.15	July 2023	394	—	—	—	394
Non-tradable warrants	Equity	$	1.60	December 2022	392,834	—	—	—	392,834
Non-tradable warrants	Equity	$	14.10	March 2021	5,000	—	—	—	5,000
Non-tradable warrants	Equity	$	21.15	March 2021	8,333	—	—	—	8,333
Non-tradable warrants	Equity	$	7.7895	June 2021	15,000	—	—	—	15,000
Non-tradable pre-funded warrants	Equity	$	0.15	none	52,834	—	—	—	52,834
Non-tradable warrants	Equity	$	1.600	December 2022	1,806,104	—	—	—	1,806,104
Non-tradable pre-funded warrants	Equity	$	0.15	none	74,617	—	—	—	74,617
Non-tradable warrants	Equity	$	2.00	September 2023	109,585	—	—	—	109,585
Non-tradable pre-funded warrants	Equity	$	0.0001	none	1,250,000	—	—	—	1,250,000
Non-tradable warrants	Equity	$	0.20	November 2024	41,037,000	—	(28,586,200)	—	12,450,800
Non-tradable warrants	Equity	$	0.250	November 2024	2,521,875	—	—	—	2,521,875
Non-tradable warrants	Equity	$	0.287	December 2024	3,581,662	—	—	—	3,581,662
Non-tradable warrants	Equity	$	0.43625	December 2024	716,332	—	—	—	716,332
Non-tradable warrants	Equity	$	0.298	December 2024	3,469,716	—	—	—	3,469,716
Non-tradable warrants	Equity	$	0.45030	December 2024	693,943	—	—	—	693,943
Non-tradable warrants	Equity	$	0.45190	December 2023	—	1,383,126	—	—	1,383,126
					55,954,486	1,383,126	(28,586,200)	—	28,751,412