10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

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

FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2021

or

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

Commission File Number 000-50549

Oncternal Therapeutics, Inc.

(Exact name of registrant as specified in its charter)

Delaware	62-1715807
(State or other jurisdiction of incorporation or organization)	(IRS Employer Identification No.)

12230 El Camino Real, Suite 300
San Diego, CA 92130
(858) 434-1113

(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)

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, $0.001 par value	ONCT	The Nasdaq Capital Market

Securities registered pursuant to Section 12(g) of the Act: None

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

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

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

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

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

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

As of October 28, 2021, the registrant had 49,427,220 shares of common stock outstanding.

Oncternal Therapeutics, Inc.

FORM 10-Q

TABLE OF CONTENTS

PART I - FINANCIAL INFORMATION
Item 1.	Condensed Consolidated Financial Statements	3
	Condensed Consolidated Balance Sheets	3
	Condensed Consolidated Statements of Operations	4
	Condensed Consolidated Statements of Cash Flows	5
	Condensed Consolidated Statements of Stockholders’ Equity	6
	Notes to Condensed Consolidated Financial Statements	8
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	20
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	29
Item 4.	Controls and Procedures	29
PART II - OTHER INFORMATION
Item 1.	Legal Proceedings	30
Item 1A.	Risk Factors	30
Item 2.	Unregistered Sales of Equity Securities	30
Item 3.	Defaults Upon Senior Securities	30
Item 4.	Mine Safety Disclosures	30
Item 5.	Other Information	30
Item 6.	Exhibits	31
Signatures		34

PART I - FINANCIAL INFORMATION

Item 1.  Financial Statements

Oncternal Therapeutics, Inc.

Condensed Consolidated Balance Sheets

(in thousands, except par value)

	September 30, 2021			December 31, 2020
	(Unaudited)
Assets
Current assets:
Cash and cash equivalents	$	97,380		$	116,737
Prepaid and other		2,140			1,266
Total current assets		99,520			118,003
Right-of-use asset		119			40
Other assets		657			766
Total assets	$	100,296		$	118,809
Liabilities and Stockholders’ Equity
Current liabilities:
Accounts payable	$	2,746		$	1,143
Accrued liabilities		2,797			3,042
Deferred grant revenue		158			1,633
Lease liability		119			40
Total current liabilities		5,820			5,858
Commitments and contingencies (Note 3)
Stockholders’ equity:
Preferred stock, $0.001 par value, authorized shares – 5,000; issued and outstanding shares – none		—			—
Common stock, $0.001 par value; authorized shares – 120,000; issued and outstanding shares – 49,427 and 48,802 at September 30, 2021 and December 31, 2020, respectively		49			49
Additional paid-in capital		200,484			195,699
Accumulated deficit		(106,057	)		(82,797	)
Total stockholders’ equity		94,476			112,951
Total liabilities and stockholders’ equity	$	100,296		$	118,809

See accompanying notes.

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Oncternal Therapeutics, Inc.

Condensed Consolidated Statements of Operations

(Unaudited; in thousands, except per share data)

	Three Months Ended September 30,								Nine Months Ended September 30,
		2021				2020				2021				2020
Grant revenue	$		2,128		$		585		$		3,759		$		1,787
Operating expenses:
Research and development			8,963				3,047				18,068				9,558
General and administrative			2,802				1,933				8,977				6,910
Total operating expenses			11,765				4,980				27,045				16,468
Loss from operations			(9,637	)			(4,395	)			(23,286	)			(14,681	)
Interest income			7				—				26				13
Net loss	$		(9,630	)	$		(4,395	)	$		(23,260	)	$		(14,668	)
Net loss per share, basic and diluted	$		(0.19	)	$		(0.22	)	$		(0.47	)	$		(0.85	)
Weighted-average shares outstanding, basic and diluted			49,393				20,126				49,285				17,251

See accompanying notes.

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Oncternal Therapeutics, Inc.

Condensed Consolidated Statements of Cash Flows

(Unaudited; in thousands)

	Nine Months Ended September 30,
	2021			2020
Cash flows from operating activities
Net loss	$	(23,260	)	$	(14,668	)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation		4,162			1,149
Non-cash lease expense		125			111
Changes in operating assets and liabilities:
Prepaid and other		(765	)		(711	)
Accounts payable		1,603			106
Accrued liabilities		(238	)		958
Change in lease liability		(125	)		(111	)
Deferred grant revenue		(1,475	)		(418	)
Net cash used in operating activities		(19,973	)		(13,584	)
Cash flows from financing activities
Proceeds from payroll protection program loan payable		—			301
Proceeds from exercise of stock options		414			4
Proceeds from issuance of common stock and common stock warrants, net		—			14,487
Proceeds from the exercise of warrants		202			—
Net cash provided by financing activities		616			14,792
Net increase (decrease) in cash and cash equivalents		(19,357	)		1,208
Cash and cash equivalents at beginning of period		116,737			20,051
Cash and cash equivalents at end of period	$	97,380		$	21,259
Supplemental disclosure of non-cash financing activities:
Cashless exercise of warrants	$	1,836		$	—
Payment of 2019 bonus awards with stock options in lieu of cash	$	—		$	415
Fair value of warrants issued to placement agent	$	—		$	729

See accompanying notes.

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Oncternal Therapeutics, Inc.

Condensed Consolidated Statements of Stockholders' Equity

(Unaudited; in thousands)

	Three Months Ended September 30, 2021
	Common Stock				Additional Paid-In		Accumulated			Total Stockholders’
	Shares		Amount		Capital		Deficit			Equity
Balance at June 30, 2021		49,385	$	49	$	198,897	$	(96,427	)	$	102,519
Exercise of stock options for cash		—		—		—		—			—
Exercise of warrants for cash		42		—		97		—			97
Vesting related to unvested share liability		—		—		2		—			2
Stock-based compensation		—		—		1,488		—			1,488
Net loss		—		—		—		(9,630	)		(9,630	)
Balance at September 30, 2021		49,427	$	49	$	200,484	$	(106,057	)	$	94,476

	Three Months Ended September 30, 2020
	Common Stock				Additional Paid-In		Accumulated			Total Stockholders’
	Shares		Amount		Capital		Deficit			Equity
Balance at June 30, 2020		17,336	$	17	$	85,426	$	(75,845	)	$	9,598
Issuance of common stock and common stock warrants, net of issuance costs of $1,165		5,011		5		10,082		—			10,087
Vesting related to unvested share liability		—		—		3		—			3
Stock-based compensation		—		—		407		—			407
Net loss		—		—		—		(4,395	)		(4,395	)
Balance at September 30, 2020		22,347	$	22	$	95,918	$	(80,240	)	$	15,700

See accompanying notes.

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Oncternal Therapeutics, Inc.

Condensed Consolidated Statements of Stockholders' Equity

(Unaudited; in thousands)

	Nine Months Ended September 30, 2021
	Common Stock				Additional Paid-In		Accumulated			Total Stockholders’
	Shares		Amount		Capital		Deficit			Equity
Balance at December 31, 2020		48,802	$	49	$	195,699	$	(82,797	)	$	112,951
Exercise of stock options for cash		106		—		414		—			414
Exercise of warrants for cash		60		—		202		—			202
Cashless exercise of warrants		459		—		—		—			—
Vesting related to unvested share liability		—		—		7		—			7
Stock-based compensation		—		—		4,162		—			4,162
Net loss		—		—		—		(23,260	)		(23,260	)
Balance at September 30, 2021		49,427	$	49	$	200,484	$	(106,057	)	$	94,476
	Nine Months Ended September 30, 2020
	Common Stock				Additional Paid-In		Accumulated			Total Stockholders’
	Shares		Amount		Capital		Deficit			Equity (Deficit)
Balance at December 31, 2019		15,387	$	15	$	79,869	$	(65,572	)	$	14,312
Exercise of stock options for cash		5		—		4		—			4
Issuance of common stock and common stock warrants, net of issuance costs of $1,767		6,955		7		14,472		—			14,479
Vesting related to unvested share liability		—		—		9		—			9
Stock-based compensation		—		—		1,149		—			1,149
Payment of 2019 bonus awards with stock options in lieu of cash		—		—		415		—			415
Net loss		—		—		—		(14,668	)		(14,668	)
Balance at September 30, 2020		22,347	$	22	$	95,918	$	(80,240	)	$	15,700

See accompanying notes.

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Oncternal Therapeutics, Inc.

Notes to Condensed Consolidated Financial Statements

(Unaudited)

1. Description of Business, Basis of Presentation and Summary of Significant Accounting Policies

Description of Business

Oncternal Therapeutics, Inc. (“Oncternal” or the “Company”), formerly known as GTx, Inc., was incorporated in Tennessee in September 1997 and reincorporated in Delaware in 2003 and is based in San Diego, California.  Oncternal is a clinical-stage biopharmaceutical company focused on the development of novel oncology therapies for the treatment of cancers with critical unmet medical need. The Company’s clinical pipeline includes zilovertamab (formerly cirmtuzumab), a humanized monoclonal antibody that binds to ROR1 (Receptor-tyrosine kinase-like Orphan Receptor 1), and ONCT-216 (formerly TK216), a small molecule inhibiting the biological activity of ETS-family transcription factor oncoproteins. The Company is also developing ONCT-808, a chimeric antigen receptor (CAR)-T cell therapy product candidate that targets ROR1, and ONCT-534 (formerly GTX-534), a dual action androgen receptor inhibitor (“DAARI”) product candidate for the treatment of castration-resistant prostate and other androgen receptor-driven cancers. The DAARI program was acquired in the Merger (described below) and was previously known as the selective androgen receptor degrader (“SARD”) program. See Note 7.

Merger

On June 7, 2019, the Company, then operating as GTx, Inc. (“GTx”), completed the merger contemplated by its Agreement and Plan of Merger and Reorganization, as amended (the “Merger Agreement”), with privately-held Oncternal Therapeutics, Inc. (“Private Oncternal”) and Grizzly Merger Sub, Inc., a wholly-owned subsidiary of the Company (“Merger Sub”), dated March 6, 2019. Under the Merger Agreement, Merger Sub merged with and into Private Oncternal, with Private Oncternal surviving as a wholly-owned subsidiary of the Company (the “Merger”). GTx changed its name to Oncternal Therapeutics, Inc., and Private Oncternal, which remains a wholly-owned subsidiary of the Company, changed its name to Oncternal Oncology, Inc. On June 10, 2019, the Company’s common stock began trading on The Nasdaq Capital Market under the ticker symbol “ONCT.”

Except as otherwise indicated, references herein to “Oncternal,” and “the Company,” refer to Oncternal Therapeutics, Inc. on a post-Merger basis, and the term “Private Oncternal” refers to the business of privately-held Oncternal Therapeutics, Inc., prior to completion of the Merger.  References to GTx refer to GTx, Inc. prior to completion of the Merger.

Principles of Consolidation

The condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries, Oncternal Oncology, Inc. and Oncternal, Inc. All intercompany accounts and transactions have been eliminated in the preparation of the condensed consolidated financial statements.

Liquidity and Going Concern

The Company follows Accounting Standards Codification (“ASC”) Topic 205-40, Presentation of Financial Statements—Going Concern, which requires that management evaluate whether there are relevant conditions and events that in the aggregate raise substantial doubt about the entity’s ability to continue as a going concern and to meet its obligations as they become due within one year after the date that the financial statements are issued.

The condensed consolidated financial statements have been prepared assuming the Company will continue as a going concern, which contemplates the realization of assets and the satisfaction of liabilities in the normal course of business.  As of September 30, 2021, the Company had $97.4 million in cash and cash equivalents. The Company believes it has sufficient cash to fund its projected operating requirements for at least twelve months from the filing date of this Quarterly Report.

From inception, the Company has devoted substantially all of its efforts to drug discovery and development and conducting preclinical studies and clinical trials. The Company has a limited operating history and the sales and income potential of the Company’s business and market are unproven. Successful transition to attaining profitable operations is dependent upon achieving a level of revenues adequate to support the Company’s cost structure.  The Company has experienced net losses and negative cash flows from operating activities since its inception and has an accumulated deficit of $106.1 million as of September 30, 2021. The Company expects to continue to incur net losses for the foreseeable future and believes it will need to raise substantial additional capital to accomplish its business plan over the next several years. The Company plans to continue to fund its losses from operations and capital funding needs through a combination of equity offerings, debt financings or other sources, including potential collaborations, licenses and other similar arrangements. If the Company is unable to secure adequate additional funding, the Company may be forced to make reductions in spending, extend payment terms with suppliers, liquidate assets where possible, or suspend or curtail planned programs.

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Any of these actions could materially harm the Company’s business, results of operations and future prospects. There can be no assurance as to the availability or terms upon which such financing and capital might be available in the future. 

Basis of Presentation

The accompanying interim condensed financial statements are unaudited.  The unaudited condensed consolidated financial statements have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission (“SEC”) and with generally accepted accounting principles in the United States of America (“GAAP”). These unaudited condensed consolidated financial statements have been prepared on the same basis as the audited, consolidated financial statements and include all adjustments, consisting of only normal recurring accruals, which in the opinion of management are necessary to present fairly the Company’s financial position as of the interim date and results of operations for the interim periods presented. The preparation of financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of expenses during the reporting period. Actual results could differ materially from those estimates. These unaudited condensed consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements for the year ended December 31, 2020, filed with the SEC on its Annual Report on Form 10-K/A on March 12, 2021. The results presented in these unaudited condensed consolidated financial statements are not necessarily indicative of the results expected for the full fiscal year or any other interim period or any future year or period.

Use of Estimates

The Company’s condensed consolidated financial statements are prepared in accordance with GAAP. The preparation of the Company’s condensed consolidated financial statements and accompanying notes requires it to make estimates and assumptions that impact the reported amounts of assets, liabilities, revenues and expenses and the disclosure of contingent assets and liabilities. Significant estimates consist of those used to determine the fair value of the Company’s stock-based awards and those used to determine grant revenue and accruals for research and development costs. Although these estimates are based on the Company’s knowledge of current events and actions it may undertake in the future, actual results may ultimately materially differ from these estimates and assumptions.

Cash and Cash Equivalents

The Company considers all highly liquid investments with maturities of three months or less when purchased to be cash equivalents. Cash and cash equivalents include cash in readily available checking accounts and money market accounts.

Concentration of Credit Risk

Financial instruments that potentially subject the Company to significant concentrations of credit risk consist primarily of cash and cash equivalents. The Company maintains deposits in federally insured financial institutions in excess of federally insured limits. The Company has not experienced any losses in such accounts and believes it is not exposed to significant risk on its cash balances due to the financial position of the depository institution in which those deposits are held. Additionally, the Company established guidelines regarding approved investments and maturities of investments, which are designed to maintain safety and liquidity.

Patent Costs

Costs related to filing and pursuing patent applications are recorded as general and administrative expense and expensed as incurred since recoverability of such expenditures is uncertain.

Research and Development Expenses and Accruals

Research and development expenses consist of costs incurred for the Company’s own and for sponsored and collaborative research and development activities. Research and development costs are expensed as incurred and include manufacturing process development costs, manufacturing costs, costs associated with preclinical studies and clinical trials, regulatory and medical affairs activities, quality assurance activities, salaries and benefits, including stock-based compensation, fees paid to third-party consultants, license fees and overhead.

The Company has entered into various research and development contracts with research institutions, clinical research organizations, clinical manufacturing organizations and other companies. Payments for these activities are based on the terms of the individual agreements, which may differ from the pattern of costs incurred, and payments made in advance of performance are reflected in the accompanying consolidated balance sheets as prepaid expenses and other assets or accrued liabilities. The Company records accruals for estimated costs incurred for ongoing research and development activities and all clinical trial expenses are included in research and development expenses. When evaluating the adequacy of the accrued liabilities, the Company analyzes progress of the services, including the phase or completion of events, invoices received and contracted costs. Significant judgments and estimates may be made in determining the prepaid or accrued balances at the end of any reporting period. Actual results could

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differ from the Company’s estimates. At September 30, 2021, the Company’s clinical trial accrual balance of $0.8 million is included in accrued liabilities.

Fair Value Measurements

The accounting guidance defines fair value, establishes a consistent framework for measuring fair value and expands disclosure for each major asset and liability category measured at fair value on either a recurring or non-recurring basis. Fair value is defined as an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, the accounting guidance establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows:

Level 1: Observable inputs such as quoted prices in active markets.

Level 2: Inputs, other than the quoted prices in active markets that are observable either directly or indirectly.

Level 3: Unobservable inputs in which there is little or no market data, which require the reporting entity to develop its own assumptions.

The carrying amounts of the Company’s current financial assets and liabilities are considered to be representative of their respective fair values because of the short-term nature of those instruments. The Company has no current financial assets or liabilities measured at fair value on a recurring basis and no transfers between levels have occurred during the periods presented.

Revenue Recognition

The Company generates revenue from certain grant awards or a subaward (the “Grant Awards”) (see Note 4), which provide the Company with payments in return for certain research and development activities over a contractually defined period. Revenue from such Grant Awards is recognized in the period during which the related qualifying services are rendered and costs are incurred, provided that the applicable conditions under the subaward agreement have been met.

The Grant Awards are on a best-effort basis and do not require scientific achievement as a performance obligation. The Grant Awards are non-refundable. The costs associated with the Grant Awards are expensed as incurred and reflected as a component of research and development expense in the accompanying condensed consolidated statements of operations.

Funds received from the Grant Awards are recorded as revenue as the Company is the principal participant in the arrangement because the activities under the Grant Awards are part of the Company’s development programs. In those instances where the Company first receives consideration in advance of providing underlying services, the Company classifies such consideration as deferred revenue until (or as) the Company provides the underlying services. In those instances where the Company first provides the underlying services prior to its receipt of consideration, the Company records a grant receivable.

Stock-Based Compensation

Stock-based compensation expense represents the fair value of equity awards, on the grant date, recognized in the period using the Black-Scholes option pricing model. The Company recognizes expense for awards with graded vesting schedules over the requisite service period of the awards (usually the vesting period) on a straight-line basis. For equity awards for which vesting is subject to performance-based milestones, the expense is recorded over the remaining service period after the point when the achievement of the milestone is deemed probable. The Company recognizes forfeitures for all awards as such forfeitures occur.

Income Taxes

The Company accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, deferred tax assets and liabilities are determined on the basis of the differences between the financial statements and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date.

The Company recognizes net deferred tax assets to the extent that the Company believes these assets are more likely than not to be realized. In making such a determination, management considers all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. If management determines that the Company would be able to realize its deferred tax assets in the future in excess of their

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net recorded amount, management would make an adjustment to the deferred tax asset valuation allowance, which would reduce the provision for income taxes.

Segment Reporting

Operating segments are identified as components of an enterprise about which separate discrete financial information is available for evaluation by the chief operating decision-maker in making decisions regarding resource allocation and assessing performance. The Company views its operations and manages its business in one operating segment in the United States.

Net Loss Per Share

Basic net loss per share is computed by dividing the net loss by the weighted-average number of common shares outstanding for the period, without consideration for potentially dilutive securities and adjusted for the weighted-average number of common shares outstanding that are subject to repurchase. The Company has excluded weighted-average shares subject to repurchase of 5,000 shares and 23,000 shares from the weighted-average number of common shares outstanding for the three months ended September 30, 2021 and 2020, respectively. The Company has excluded weighted-average shares subject to repurchase of 9,000 shares and 27,000 shares from the weighted-average number of common shares outstanding for the nine months ended September 30, 2021 and 2020, respectively. Diluted net loss per share is computed by dividing the net loss by the weighted-average number of shares of common stock and dilutive common stock equivalents outstanding for the period determined using the treasury-stock and if-converted methods. For all periods presented, there is no difference in the number of shares used to calculate basic and diluted shares outstanding as inclusion of the potentially dilutive securities would be antidilutive.

Potentially dilutive securities not included in the calculation of diluted net loss per share, because to do so would be anti-dilutive, are as follows (in common stock equivalent shares; in thousands):

	September 30,
	2021		2020
Warrants to purchase common stock		4,235		3,521
Common stock options		6,019		2,341
Common stock subject to repurchase		4		20
		10,258		5,882

2. Balance Sheet Details

Accrued liabilities consist of the following (in thousands):

	September 30,		December 31,
	2021		2020
Research and development	$	310	$	412
Clinical trials		844		980
Legal fees		194		77
Compensation		1,446		1,528
Other		3		45
	$	2,797	$	3,042

3. Commitments, Contingencies and Related Party Transactions

Lease Liability

Rent expense was $46,000 and $41,000 for the three months ended September 30, 2021 and 2020. Rent expense was $133,000 and $124,000 for the nine months ended September 30, 2021 and 2020, respectively.

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On May 22, 2019, the Company entered into a sublease agreement for office space of 4,677 square feet in San Diego, California which expired on March 31, 2021. On March 17, 2021, the Company entered into a lease directly with the landlord for the same facility (the “San Diego Lease”) which expires on May 31, 2022. Base rent under the San Diego Lease is approximately $184,000 annually and the monthly rent expense is being recognized on a straight-line basis over the term of the lease.

The San Diego Lease is included in the accompanying condensed consolidated balance sheet at the present value of the lease payments. As the San Diego Lease does not have an implicit interest rate, the present value reflects a 10.0% discount rate which is the estimated rate of interest that the Company would have to pay in order to borrow an amount equal to the lease payments on a collateralized basis over a similar term and in a similar economic environment. The Company recognized a net operating lease right-of-use asset and an aggregate lease liability of $119,000 as of September 30, 2021. The weighted average remaining lease term was 0.7 years.

Maturities of the lease liability due under this lease agreement as of September 30, 2021, are as follows (in thousands):

Maturity of lease liability	Operating Lease
2021	$	45
2022		77
Total lease payments		122
Less imputed interest		(3	)
Lease liability	$	119

Related Party Transactions 

In January 2019, the Company engaged Newfront Insurance as its primary insurance broker. The son of Richard Vincent, the Company’s Chief Financial Officer, is the Company’s agent at Newfront Insurance. During the nine months ended September 30, 2021 and 2020, the Company paid insurance premiums of approximately $1.8 million and $1.4 million, for which the son earned commission of $79,000 and $57,000, respectively.

Effective in September 2019, the Company and Shanghai Pharmaceutical (USA) Inc. (“SPH USA”), the Company’s largest stockholder and an affiliate of two of the Company’s directors entered into a Materials and Supply and Services Agreement (“SPH USA Services Agreement”). Pursuant to the SPH USA Services Agreement, the Company and SPH USA have executed and expect to continue to execute various statements of work for the transfer to SPH USA of key reagents and other materials, and for the supply of certain services by the Company to SPH USA, as contemplated under and in furtherance of a license and distribution agreement between the parties (see Note 4). The Company recorded amounts receivable from SPH USA related to statements of work totaling $0.2 million and $0.3 million as of September 30, 2021 and December 31, 2020, respectively. The Company has an agreement with SPH USA for certain rights to the greater China area (see Note 4).

In connection with the securities purchase agreements and underwritten offerings described in Note 5, other investors included individuals or entities affiliated with David F. Hale, SPH USA, Daniel L. Kisner, Hazel M. Aker, and Michael G. Carter.

4. License, Collaboration and Grant Award/Subaward Agreements

Georgetown University (“Georgetown”)

In March 2014, the Company entered into an Exclusive License Agreement (the “Georgetown License Agreement”) with Georgetown, pursuant to which the Company: (i) licensed the exclusive worldwide right to patents and technologies for the development and commercialization of certain product candidates targeting tumorigenic EWS-FLI1 fusion proteins as an anti-tumor therapy for therapeutic, diagnostics, or research tool purposes, (ii) is solely responsible for all development and commercialization activities and costs, and (iii) is responsible for all costs related to the filing, prosecution and maintenance of the licensed patent rights.

Under the terms of the Georgetown License Agreement, commencing in 2015, the Company: (i) shall pay and has paid an annual license maintenance fee of $10,000 until the first commercial sale occurs, (ii) is required to make up to $0.2 million in aggregate milestone payments upon the achievement of certain regulatory milestones, and (iii) will be required to pay low single digit royalties based on annual net product sales. The Company accounted for the licensed technology as an asset acquisition because it did not meet the definition of a business. All milestone payments under the Georgetown License Agreement will be recognized as research and development expense upon completion of the required events, as the triggering events are not considered to be probable until they are achieved. As of September 30, 2021, the Company had not triggered or made any milestone payments under the Georgetown License Agreement.

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The Georgetown License Agreement may be terminated by either party upon material breach or may be terminated by the Company as to one or more countries with 90 days written notice of termination. The term of the Georgetown License Agreement will continue until the expiration of the last valid claim within the patent rights covering the product. Georgetown may terminate the agreement in the event: (i) the Company fails to pay any amount and fails to cure such failure within 30 days after receipt of notice, (ii) the Company defaults in its obligation to obtain and maintain insurance and fails to remedy such breach within 60 days after receipt of notice, or (iii) the Company declares insolvency or bankruptcy. The Company may terminate the Georgetown License Agreement at any time upon at least 60 days’ written notice.

The University of Texas MD Anderson Cancer Center (“MD Anderson”)

In December 2014, the Company entered into a collaboration agreement (as amended, the “Collaboration”) with MD Anderson, which provides for the conduct of preclinical and clinical research for ONCT-216 in exchange for certain program payments. If MD Anderson successfully completes all the requirements of the Collaboration in full and the program is successfully commercialized, the Company will be required to pay aggregate milestone payments of $1.0 million based on net product sales. In July 2020 and September 2021, the Company entered into two research agreements with MD Anderson for certain services up to an aggregate cost of $820,000. The Company recorded research and development expense of none and $0.1 million for the three and nine months ended September 30, 2021 and $0.2 million for the three and nine months ended September 30, 2020.

Agreements with the Regents of the University of California (the “Regents”)

In March 2016, and as amended and restated in August 2018, and as amended in March and May 2019, the Company entered into a license agreement (as amended, the “Regents License Agreement”) for the development, manufacturing and distribution rights related to the development and commercialization of ROR1 related naked antibodies, antibody fragments or synthetic antibodies, and genetically engineered cellular therapies. The Regents License Agreement provides for the following: (i) in May 2016, an upfront license fee of $0.5 million was paid and 107,108 shares of common stock were issued, (ii) $25,000 in annual license maintenance fees commencing in 2017, (iii) reimbursement of certain annual patent costs, (iv) certain development and regulatory milestones aggregating from $10.0 million to $12.5 million, on a per product basis, (v) certain worldwide sales milestones based on achievement of tiered revenue levels aggregating $75.0 million, (vi) low single-digit royalties, including potential future minimum annual royalties, on net sales of each target, and (vii) minimum diligence to advance licensed assets consisting of at least $1.0 million in development spend annually through 2021. Under the Regents License Agreement, the Company recorded: (i) none and $25,000 in license maintenance fees as research and development expense for the three and nine months ended September 30, 2021 and $25,000 for the three and nine months ended September 30, 2020, and (ii) a $0.1 million  in patent costs as general and administrative expense for the three months ended September 30, 2021 and 2020, respectively, and $0.3 million and $0.1 million for nine months ended September 30, 2021 and 2020, respectively. As of September 30, 2021, the Company believes it has met its obligations under the Regents License Agreement.

In July 2016, and as modified by the amended and restated Regents License Agreement in August 2018, the Company entered into a Research Agreement (the “Research Agreement”) with the Regents for further research on a ROR1 therapeutic development program. Under this five-year agreement, the Regents will have an aggregate budget of $3.6 million, with $125,000 payable quarterly. The Company recorded none and $0.1 million in research and development expense under this agreement for each of the three months ended September 30, 2021 and 2020, and $0.3 million and $0.4 million for each of the nine months ended September 30, 2021 and 2020, respectively. Such costs are includable as part of the Company’s annual diligence obligations under the Regents License Agreement. The Regents License Agreement will expire upon the later of the expiration date of the longest-lived patent rights or the fifteenth anniversary of the first commercial sale of a licensed product.

The Regents may terminate the Regents License Agreement if: (i) a material breach by the Company is not cured within a reasonable time, (ii) the Company files a claim asserting the Regents licensed patent rights are invalid or unenforceable and (iii) the Company files for bankruptcy. The Company may terminate the agreement at any time upon at least 60 days’ written notice.

The University of Tennessee Research Foundation (“UTRF”)

In March 2015, and as amended, the Company and UTRF entered into a license agreement (the “SARD License Agreement”) pursuant to which the Company was granted exclusive worldwide rights in all existing SARD technologies owned or controlled by UTRF, including all improvements thereto. The SARD program is now known as the dual action androgen receptor inhibitor, or DAARI program. Under the SARD License Agreement, the Company is obligated to employ active, diligent efforts to conduct preclinical research and development activities for the DAARI program to advance one or more lead compounds into clinical development.  The Company is also obligated to pay UTRF annual license maintenance fees, low single-digit royalties on net sales of products and additional royalties on sublicense revenues, depending on the state of development of a clinical product candidate at the time it is sublicensed. The Company recorded research and development expense under this agreement that were nominal and $0.1 million for each of the three months ended September 30, 2021 and 2020, respectively, and $0.1 million and $0.2 million for each of

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the nine months ended September 30, 2021 and 2020, respectively. As of September 30, 2021, the Company believes it has met its obligations under the SARD License Agreement. See Note 7.

The California Institute for Regenerative Medicine (“CIRM”) Award

In August 2017, and as amended and restated in December 2020, CIRM awarded an $18.3 million grant to researchers at UC San Diego to advance the Company’s Phase 1/2 clinical trial evaluating zilovertamab in combination with ibrutinib for the treatment of patients with B-cell lymphoid malignancies, including mantle cell lymphoma (“MCL”), and chronic lymphocytic leukemia (“CLL”). This study is known as CIRM-0001, or Cirmtuzumab and Ibrutinib for Relapsed Lymphoma or Leukemia (the “CIRLL study”). The Company: (i) is conducting this study in collaboration with UC San Diego, (ii) estimates it will receive approximately $14.0 million in development milestones under research subaward agreements during the award project period, estimated to be from October 1, 2017 to March 31, 2022, (iii) is committed to certain co-funding requirements, (iv) received subaward payments of none for the three months ended September 30, 2021 and 2020, and $2.2 million and $1.4 million for the nine months ended September 30, 2021 and 2020, respectively, and (v) is required to provide UC San Diego progress and financial update reports throughout the award period. The subaward does not bear a royalty payment commitment, nor is the subaward otherwise refundable. For the three months ended September 30, 2021 and 2020, the Company recorded revenue of $2.1 million and $0.6 million, respectively, and recorded revenue of $3.7 million and $1.8 million for the nine months ended September 30, 2021 and 2020, respectively. Related qualifying subaward costs for the three months ended September 30, 2021 and 2020 were $4.2 million and $1.3 million, respectively, and $7.5 million and $4.1 million for the nine months ended September 30, 2021 and 2020, respectively. At September 30, 2021, and December 31, 2020, the Company had deferred grant revenue of $0.2 million and $1.6 million, respectively. As of September 30, 2021, the Company believes it has met its obligations under the CIRM award and UC San Diego subawards.

The National Institute of Health (“NIH”) Grant Awards

In August 2021, the NIH awarded the Company two research and development grants for up to $2.2 million to support pre-clinical activities for the Company’s ONCT-216 and ONCT-534 programs, including $0.7 million payable to subawardees. Under the terms of the grants, the Company is entitled to receive reimbursement in arrears of incurring allowable expenditures. The earned NIH funds are non-refundable and the Company is required to provide periodic progress performance reports. During the three and nine months ended September 30, 2021, the Company received no award payments from the NIH and recorded $50,000 in grant revenue and recorded an unbilled receivable in prepaid and other assets.

Clinical Trial and Supply Agreement

In April 2018, and as amended, the Company entered into a Clinical Trial and Supply Agreement with Pharmacyclics, LLC, an AbbVie Company, to supply ibrutinib for the CIRLL study. Such agreement does not bear any upfront costs, inventory purchase costs, milestone or royalty payment commitments or other financial obligations.

SPH USA, a Related Party

License and Development Agreement (“LDA”)

In November 2018, and as amended, the Company entered into the LDA with SPH USA for: (i) the territory of the People’s Republic of China, Hong Kong, Macau, and Taiwan (“Greater China”), and (ii) rights to manufacture, develop, market, distribute and sell all of the Company’s product candidates under the Georgetown License Agreement and the Regents License Agreement (exclusive to Greater China only). Under the LDA, SPH USA is solely responsible for: (a) all preclinical and clinical development activities required in order to obtain regulatory approval in Greater China for such product candidates, (b) any third-party license milestone or royalty payments owed under the Georgetown License Agreement and the Regents License Agreement, and (c) paying the Company a low single digit royalty on net sales in the territory.

The LDA will expire upon the expiration of the last royalty term for the last licensed product. The LDA may be terminated by: (i) SPH USA on a country by country or product by product basis with 180 days written notice, (ii) either party upon material breach that is not cured within 90 days, and (iii) either party in the event the other party declares insolvency or bankruptcy. There has been no significant activity under this agreement for each of the three and nine months ended September 30, 2021 and 2020. See Note 3.

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5. Stockholders’ Equity

Securities Purchase Agreements and Underwritten Offering

In May 2020, the Company entered into a Securities Purchase Agreement (the “May Purchase Agreement”) with several institutional and individual investors for the concurrent sale of: (i) 1,943,636 shares of the Company’s common stock in a registered direct offering, resulting in net proceeds of $4.4 million, after deducting the placement agent’s cash commissions and other offering expenses, and excluding the proceeds, if any, from the exercise of the warrants, and (ii) unregistered warrants to purchase up to an aggregate of 971,818 shares of common stock. The combined purchase price for one share and one warrant to purchase half of a share of common stock was $2.5725. In addition, the Company issued warrants to purchase 116,618 shares of common stock at an exercise price of $3.2156 per share to the placement agent, H.C. Wainwright & Co., LLC (“Wainwright” or the “placement agent”) as part of its compensation, which warrants were immediately exercisable and expire on May 21, 2025. An investor participating in the transaction included an entity affiliated with David F. Hale, the chairman of the Company’s board of directors.

In July 2020, the Company entered into a Securities Purchase Agreement (the “July Purchase Agreement”) with several institutional and individual investors for the concurrent sale of: (i) 2,581,867 shares of the Company’s common stock in a registered direct offering, resulting in net proceeds of $5.7 million, after deducting the placement agent’s cash commissions and other offering expenses, and excluding the proceeds, if any, from the exercise of the warrants, and (ii) unregistered warrants to purchase up to an aggregate of 1,290,933 shares of common stock. The combined purchase price for one share and one warrant to purchase half of a share of common stock was $2.3825. The warrants issued to investors were, subject to certain ownership limitations, immediately exercisable at an exercise price equal to $2.32 per share and expire on January 21, 2026. In addition, the Company issued warrants to purchase 154,912 shares of common stock at an exercise price of $2.9781 per share to the placement agent as part of its compensation, which warrants were immediately exercisable upon issuance and terminate on July 21, 2025. Other investors participating in the July Purchase Agreement included an entity affiliated with SPH USA, the Company’s largest stockholder, Daniel L. Kisner, a member of the Company’s board of directors, and Hazel M. Aker, the Company’s then General Counsel.

In August 2020, the Company entered into an underwriting agreement (as amended and restated, the “August Underwriting Agreement”) with Wainwright for the sale of 2,428,886 shares of the Company’s common stock at a price to the public of $2.10 per share, resulting in net proceeds of $4.4 million, after deducting the underwriter’s discounts, commissions and other offering expenses.  In addition, the Company issued warrants to purchase 145,733 shares of common stock at an exercise price of $2.625 per share to Wainwright as part of its compensation, which warrants were immediately exercisable upon issuance and terminate on August 27, 2025. An investor participating in the transaction included Michael G. Carter, a member of the Company’s board of directors.

In November 2020, the Company entered into an underwriting agreement (as amended and restated, the “November Underwriting Agreement”) with Wainwright for the sale of 7,258,065 shares of the Company’s common stock at a price to the public of $3.10 per share, resulting in net proceeds of $20.4 million, after deducting the underwriter’s discounts, commissions and other offering expenses. In addition, the Company issued warrants to purchase 435,484 shares of common stock at an exercise price of $3.875 per share to Wainwright as part of its compensation, which warrants were immediately exercisable upon issuance and terminate on November 17, 2025.

In December 2020, the Company entered into an underwriting agreement (as amended and restated, the “December Underwriting Agreement”) with Wainwright for the sale of 19,161,667 shares of the Company’s common stock at a price to the public of $4.50 per share, resulting in net proceeds of $79.0 million, after deducting the underwriter’s discounts, commissions and other offering expenses In addition, the Company issued warrants to purchase 1,149,700 shares of common stock at an exercise price of $5.625 per share to Wainwright as part of its compensation, which warrants were immediately exercisable upon issuance and terminate on December 9, 2025.

Common Stock Warrants

A summary of warrant activity and changes in warrants outstanding is presented below:

	Number of Shares Underlying Warrants			Weighted-Average Exercise Price Per Share		Weighted-Average Remaining Contractual Term (in years)
Balance at December 31, 2020		5,031,841		$	9.25		4.40
Issued		—		$	—		—
Forfeited		—		$	—		—
Exercised		(796,931	)	$	2.56		4.10
Balance at September 30, 2021		4,234,910		$	10.50		3.57

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As of September 30, 2021, all warrants met the criteria for classification in stockholders’ equity.

Equity Incentive Plans

Contemporaneous with the Merger closing: (i) Private Oncternal’s 2015 Equity Incentive Plan, as amended (the “2015 Plan”) was assumed by the Company, and (ii) the Company adopted the 2019 Incentive Award Plan (“2019 Plan”) under which the sum of: (a) 1,678,571 shares of common stock, (b)  up to 275,579 shares of common stock which were subject to outstanding awards under the GTx 2013 Equity Incentive Plan (the “2013 Plan”) as of June 7, 2019, that upon cancellation will become available for issuance under the 2019 Plan, and (c) an annual increase on the first day of each calendar year beginning January 1, 2020, and ending on and including January 1, 2029, equal to the lesser of (A) 5% of the aggregate number of shares of common stock outstanding on the final day of the immediately preceding calendar year and (B) such smaller number of shares of common stock as is determined by the Board, are reserved for issuance. At September 30, 2021, 1,521,432 shares remain available for future issuance under the 2019 Plan and Inducement Plan (as defined below).

					Weighted-
					Average
			Weighted-		Remaining
			Average		Contractual		Aggregate
	Number of		Exercise Price		Term		Intrinsic
	Shares		Per Share		(in years)		Value
Options outstanding		6,019,412	$	5.37		8.83	$	1,732,115
Options vested and expected to vest		6,019,412	$	5.37		8.83	$	1,732,115
Options exercisable		1,300,174	$	3.79		6.89	$	1,365,004

As of September 30, 2021, all 275,579 stock options previously outstanding under the 2013 Plan were cancelled and added to the 2019 Plan. At September 30, 2021, all former GTx stock option plans were terminated and there are no remaining outstanding stock options.

In July 2015, Private Oncternal adopted the 2015 Plan which provided for the issuance of up to 631,120 shares of common stock for incentive stock options, non-statutory stock options, restricted stock awards, restricted stock unit awards and other stock awards to its employees, members of its board of directors and consultants.  In general, the options issued under the 2015 Plan expire ten years from the date of grant and vest over a four-year period. Certain grants vest based on the achievement of development or regulatory milestones. No further awards will be made under the 2015 Plan, which was terminated as to new grants in June 2019.

The 2019 Plan provides for the issuance of shares of common stock for incentive stock options, non-statutory stock options, restricted stock awards, restricted stock unit awards and other stock awards to its employees, members of its board of directors and consultants.  In general, the stock options issued under the 2019 Plan expire ten years from the date of grant and vest over a four-year period. Certain stock option grants vest based on the achievement of development or regulatory milestones. The 2019 Plan allows for the early exercise of all stock option grants if authorized by the board of directors at the time of grant.

On February 11, 2021, the Company’s board of directors adopted the 2021 Employment Inducement Incentive Award Plan (the “Inducement Plan”). The Inducement Plan is a non-shareholder approved stock plan adopted pursuant to the “inducement exception” provided under Nasdaq listing rules. The Inducement Plan is used exclusively for the issuance of non-statutory stock options to certain new hires who satisfied the requirements to be granted inducement grants under Nasdaq rules as an inducement material to the individual’s entry into employment with the Company. The terms of the Inducement Plan are substantially similar to the terms of our 2019 Plan.  As amended on May 25, 2021, the Company has reserved 2,050,000 shares of common stock under the Inducement Plan.

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A summary of the Company’s stock option activity under the 2019 Plan, Inducement Plan and 2015 Plan is as follows:

				Weighted-
	Number of			Average
	Options			Exercise Price
Balance at December 31, 2020		2,107,625		$	4.08
Granted		4,396,700		$	5.98
Cancelled		(378,750	)	$	5.66
Exercised		(106,163	)	$	3.89
Balance at September 30, 2021		6,019,412		$	5.37

For the nine months ended September 30, 2021 and 2020, the weighted average grant date fair value per share of option grants was $4.48 per share and $2.40 per share, respectively.  For the nine months ended September 30, 2021 and 2020, the aggregate intrinsic value of stock options exercised was $3.89 per share and $2.03 per share, respectively. The intrinsic value is calculated as the difference between the fair value of the Company’s common stock at the time of the option exercise and the exercise price of that stock option.

Stock-Based Compensation Expense

The weighted-average assumptions used in the Black-Scholes option pricing model to determine the fair value of stock option grants, were as follows:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2021			2020			2021			2020
Risk-free interest rate		1.0	%		0.7	%		0.8	%		0.8	%
Expected volatility		100.3	%		98.6	%		91.8	%		92.2	%
Expected term (in years)		6.0			10.0			6.2			6.6
Expected dividend yield		—	%		—	%		—	%		—	%

Expected volatility. Due to the lack of an adequate history of: (i) a public market for the trading of the Company’s common stock, and (ii) specific historical and implied volatility data, the Company has based its estimate of the historical volatility from a group of similar companies that are publicly traded. For these analyses, the Company has selected companies with comparable characteristics to it including enterprise value, risk profiles, position within the industry, and with historical share price information sufficient to meet the expected life of the stock-based awards. The Company computes the historical volatility data using the daily closing prices for the selected companies’ shares during the equivalent period of the calculated expected term of our stock-based awards. The Company will continue to apply this process until a sufficient amount of historical information regarding the volatility of its own stock price becomes available.

Expected term. The expected term represents the period of time that options are expected to be outstanding. Because the Company does not have historical exercise behavior, it determined the expected life assumption using the simplified method for employees, which is an average of the contractual term of the option and its vesting period. The expected term for nonemployee options is generally the remaining contractual term.

Risk-free interest rate. The risk-free interest rate is based on the implied yield on the U.S. Treasury securities with a maturity date similar to the expected term of the associated stock option award.

Expected dividend yield. The Company bases the expected dividend yield assumption on the fact that it has never paid cash dividends and has no present intention to pay cash dividends and, therefore, used an expected dividend yield of zero.

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Stock-based compensation expense recognized for all equity awards has been reported in the condensed consolidated statements of operations as follows (in thousands):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2021		2020		2021		2020
Research and development	$	920	$	129	$	2,097	$	398
General and administrative		568		278		2,065		751
	$	1,488	$	407	$	4,162	$	1,149

As of September 30, 2021, the total compensation cost related to non-vested awards not yet recognized was $17.7 million and the weighted-average period over which it is expected to be recognized was 3.2 years.

Common Stock Reserved for Future Issuance

Common stock reserved for future issuance is as follows (in thousands):

	September 30, 2021
Common stock warrants		4,235
Common stock options issued and outstanding		6,019
Common stock available for issuance under the Inducement Plan and 2019 Plan		1,522
		11,776

6. COVID-19 Pandemic and CARES Act

The current COVID-19 pandemic has presented substantial public health and economic challenges and is affecting economies, financial markets and business operations around the world. While the Company is currently continuing the clinical trials it has underway in sites across the U.S., COVID-19 precautions have directly or indirectly impacted the timeline for some of its clinical trials. Additionally, the Company’s expectations for the timing of first-in-human dosing of ONCT-808 has been delayed. The Company considered the impacts of COVID-19 on the assumptions and estimates used to prepare its condensed consolidated financial statements and determined that there were no material adverse impacts on the Company’s results of operations and financial position at September 30, 2021. The full extent to which the COVID-19 pandemic will continue to directly or indirectly impact the Company’s business results of operations and financial condition, will depend on future development that are highly uncertain, including as a result of new information that may emerge concerning COVID-19 and the actions taken to contain or treat it, the success or failure of ongoing vaccination programs worldwide, the emergence and spread of additional variants of COVID-19, as well as the economic impact on local, regional, national and international markets. 

In response to the COVID-19 pandemic, the CARES Act was signed into law on March 27, 2020.  The CARES Act, among other things, includes tax provisions relating to refundable payroll tax credits, deferment of employer’s social security payments, net operating loss utilization and carryback periods, modifications to the net interest deduction limitations and technical corrections to tax depreciation methods for qualified improvement property, and authorized the Paycheck Protection Program. The CARES Act had no material impact on the Company’s income tax provision for the nine months ended September 30, 2021.  The Company continues to monitor changes and revisions to the CARES Act and its impact on the Company’s condensed consolidated financial position, results of operations and cash flows.

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7. Subsequent Event

In connection with the Merger, the Company, a representative of holders of the contingent value rights (“CVRs”), and Computershare, Inc. as rights agent, entered into a Contingent Value Rights Agreement (the “CVR Agreement”) pursuant to which the Company’s stockholders of record as of immediately prior to the Merger received one CVR for each share of the Company’s common stock held immediately prior to the Merger. The CVR Agreement was amended on November 1, 2021. As amended, the CVR Agreement entitles holders of CVRs to receive: (i) 50% of certain net proceeds received by the Company during the 15-year period after the closing of the Merger (the “CVR Term”) from a transaction, if any, resulting in the grant, sale, or transfer of DAARI technology to a third party that occurs during the 10-year period after the closing of the Merger (or in the 11th year if based on a term sheet approved during the initial 10-year period); and (b) 5% of net sales of products by Parent or its affiliates during the CVR Term incorporating the DAARI technology. As of September 30, 2021, no transactions or net sales relating to the DAARI technology had occurred.

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis of our financial condition and results of operations should be read in conjunction with: (i)our unaudited condensed consolidated financial statements and related notes thereto included elsewhere in this Quarterly Report on Form 10-Q for the period ended September 30, 2021, and (ii) our audited financial statements and notes thereto for the year ended December 31, 2020 and the related Management’s Discussion and Analysis of Financial Condition and Results of Operations, both of which are contained in in our 2020 Annual Report on Form 10-K/A for the year ended December 31, 2020.  Except as otherwise indicated herein or as the context otherwise requires, references in this Quarterly Report to “Oncternal” “the Company,” “we,” “us” and “our” refer to Oncternal Therapeutics, Inc., a Delaware corporation.

Cautionary Note Regarding Forward-Looking Statements

This Quarterly Report contains forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). All statements other than statements of historical facts contained in this Quarterly Report, including statements regarding our future results of operations and financial position, business strategies and plans, prospective products, product approvals, research and development costs, the expected continued impact of COVID-19, timing and likelihood of success, plans and objectives of management for future operations and future results of anticipated products, are forward-looking statements. In some cases, you can identify forward-looking statements by terminology such as “may,” “will,” “should,” “could,” “expects,” “intends,” “plans,” “anticipates,” “believes,” “estimates,” “predicts,” “potential,” “continue,” or the negative of these terms or other comparable terminology. These forward-looking statements are only predictions. We have based these forward-looking statements largely on our current expectations and projections about future events and financial trends that we believe may affect our business, financial condition and results of operations. These forward-looking statements speak only as of the date of this Quarterly Report and are subject to a number of risks, uncertainties and assumptions, including those described in our Annual Report on Form 10-K/A, filed with the SEC on March 12, 2021, and in Part II, Item 1A, “Risk Factors” of this Quarterly Report. The events and circumstances reflected in our forward-looking statements may not be achieved or occur and actual results could differ materially from those projected in the forward-looking statements. Except as required by applicable law, we do not plan to publicly update or revise any forward-looking statements contained herein, whether as a result of any new information, future events, changed circumstances or otherwise.

Overview

We are a clinical-stage biopharmaceutical company focused on the development of novel oncology therapies for cancers with critical unmet medical need. Our development efforts are focused on promising, yet untapped, biological pathways implicated in cancer generation or progression. Our pipeline includes:

• Zilovertamab (formerly cirmtuzumab), an investigational humanized monoclonal antibody that is designed to inhibit Receptor tyrosine kinase-like Orphan Receptor 1, or ROR1, a growth factor receptor that is widely expressed on many tumors and that activates pathways leading to increased tumor proliferation, invasiveness and drug resistance.

• ONCT-216 (formerly TK216), an investigational small molecule that is designed to inhibit the ETS, or E26 Transformation Specific, family of oncoproteins, which have been shown in preclinical studies to alter gene transcription and RNA processing and lead to increased cell proliferation and invasion.

• ONCT-808, an autologous chimeric antigen receptor T cell, or CAR-T, therapy candidate that targets ROR1, which is currently in preclinical development. ROR1 is highly expressed by multiple solid tumors and hematological malignancies and confers both an aggressive phenotype and survival advantage to tumor cells.

• ONCT-534 (formerly GTX-534), a dual action androgen receptor inhibitor, or DAARI, product candidate in development for the treatment of castration-resistant prostate and other androgen-receptor cancers. This program was acquired in the GTx Merger (described below) and was previously known as the selective androgen receptor degrader, or SARD, program.

Zilovertamab is being evaluated in the Cirmtuzumab and Ibrutinib for Relapsed Lymphoma or Leukemia study, or CIRLL study, a Phase 1/2 clinical trial in combination with ibrutinib for the treatment of patients with B-cell lymphoid malignancies, including mantle cell lymphoma, or MCL, and chronic lymphocytic leukemia, or CLL, and in an investigator-sponsored, Phase 1b clinical trial in combination with paclitaxel for the treatment of women with HER2-negative metastatic or locally advanced, unresectable breast cancer. We are also supporting an investigator-sponsored Phase 2 clinical trial of zilovertamab in combination with venetoclax, a Bcl-2 inhibitor, in patients with relapsed/refractory CLL, which is currently enrolling patients.

Our clinical strategy for zilovertamab prioritizes development in MCL, based on continuing encouraging interim clinical results from the CIRLL study that were presented at the American Society of Clinical zOncology 2021 Annual Meeting in June. The CIRLL

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study target enrollment for patients with relapsed/refractory MCL in the ongoing Phase 2 expansion cohort is at least 20 patients to allow for the enrollment of patients with a broader range of prior Bruton’s Tyrosine kinase, or BTK, inhibitor treatments.  The total enrollment of CLL patients in the randomized Phase 2 CLL cohort of the CIRLL study is 28 patients, which was reached in 2020, and data are maturing. In July 2021, we opened a new treatment cohort of the CIRLL study for up to 34 patients with MCL who are refractory to prior BTK inhibitor treatment (ibrutinib, acalabrutinib or zanubrutinib), or who are at high risk for progression, having had an inadequate response to ibrutinib (stable disease or partial response).

We have ongoing interactions with the U.S. Food and Drug Administration, or FDA, regarding potential accelerated and/or full approval pathways for zilovertamab plus ibrutinib in patients with relapsed/refractory MCL.

ONCT-216 is being evaluated in a Phase 1/2 clinical trial as a single agent and in combination with vincristine in patients with relapsed or refractory Ewing sarcoma, a rare pediatric cancer. We recently added a new Phase 2 expansion cohort targeting up to 21 Ewing sarcoma patients to evaluate clinical responses to single agent ONCT-216 using an optimized dosing regimen, treating patients for 28 days per cycle with the next cycle starting immediately after the prior one, to intensify the amount of ONCT-216 administered over time.

The FDA has granted orphan drug designations for zilovertamab for the treatment of MCL and for the treatment of CLL/small lymphocytic lymphoma, and has granted rare pediatric disease designation, as well as orphan drug and fast track designations for ONCT-216 for the treatment of Ewing sarcoma.

ONCT-808, our autologous CAR-T cell therapy product candidate targeting ROR1, is being developed in collaboration with the Karolinska Institutet and under agreements with Lentigen Technology, Inc. (lentivirus manufacturing) and Miltenyi Biotec B.V. & Co. KG. (cell processing). ONCT-808 relies on a single-chain variable fragment (scFv) derived from our clinical-stage antibody zilovertamab as targeting CAR component. We are currently performing activities to support the submission to the FDA of an Investigational New Drug Application, or IND, which we expect to submit in the first half of 2022.

ONCT-534, our DAARI product candidate, is in pre-clinical development. We are evaluating strategic development options for ONCT-534 as a potential therapy for patients with advanced prostate cancer.

Since the inception of privately-held Oncternal Therapeutics, Inc. in 2013, we have devoted most of our resources to organizing and staffing, business planning, raising capital, acquiring product candidates and securing related intellectual property rights and advancing our zilovertamab and ONCT-216 clinical development programs.  Under research subaward agreements between us and UC San Diego, we are eligible to receive approximately $14.0 million in development milestones during the award project period, estimated to be from October 1, 2017 to March 31, 2022.  Through September 30, 2021, we have funded our operations primarily through: (i) gross proceeds of $125.0 million from the issuance of common stock, (ii) gross proceeds of $49.0 million from the issuance of convertible preferred stock, (iii) receipt of $13.9 million in subaward grant payments received from UC San Diego, and (iv) cash proceeds of $18.3 million received in connection with the closing of the merger with GTx, Inc. in June 2019, or the GTx Merger.  As of September 30, 2021, we had cash and cash equivalents of $97.4 million.

We have incurred net losses in each year since inception.  Our ability to generate product revenue sufficient to achieve profitability will depend heavily on the successful development and eventual commercialization of one or more of our current or future product candidates.  Our net loss was $23.3 million for the nine months ended September 30, 2021.  As of September 30, 2021, we had an accumulated deficit of $106.1 million.  Substantially all of our net losses have resulted from costs incurred in connection with: (i) advancing our research and development programs, (ii) general and administrative costs associated with our operations, including the costs associated with operating as a public company, and (iii) in-process research and development costs associated with the GTX Merger.  We expect to continue to incur significant and increasing operating losses for at least the next several years.  We expect that our expenses and capital funding requirements will increase substantially in connection with our ongoing activities, particularly if and as we:

• advance zilovertamab through clinical development in multiple indications, initially focused on potential registration studies for patients with MCL;

• generate clinical proof-of-concept data with ONCT-216 in Ewing sarcoma, an orphan pediatric cancer indication;

• advance our ROR-1 targeting cell therapy program, which includes ONCT-808 to clinical development, initially in hematological cancers;

• advance ONCT-534 into clinical development, initially in castration resistant prostate cancer and then other AR-driven diseases;

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• respond to the impacts of the COVID-19 pandemic, which has slowed enrollment into our clinical trials;

• evaluate zilovertamab in additional ROR1-positive solid malignancies;

• evaluate ONCT-216 in additional malignancies with ETS fusion proteins or overexpression;

• continue to develop additional product candidates;

• acquire or in‑license other product candidates and technologies;

• maintain, expand and protect our intellectual property portfolio;

• establish a commercial manufacturing source and secure supply chain capacity sufficient to provide commercial quantities of any product candidates for which we may obtain regulatory approval;

• seek regulatory approvals for any product candidates that successfully complete clinical trials;

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

• add operational, financial and management information systems and personnel, including personnel to support our planned product development and future commercialization efforts.

We will not generate product sales revenue unless and until we successfully complete clinical development and obtain regulatory approval for our product candidates. If we obtain regulatory approval for any of our product candidates and do not enter into a commercialization partnership, we expect to incur significant expenses related to developing our internal commercialization capability to support product sales, marketing and distribution.  In addition, we expect to incur additional costs associated with operating as a public company.

As a result, we believe we will need substantial additional funding to support our continuing operations and pursue our business strategy. Until such time as we can generate significant product sales revenue, if ever, we expect to finance our operations through a combination of equity offerings, debt financings, government funding, or other sources, including potentially collaborations, licenses and other similar arrangements.  We may not be able to raise additional funds or enter into such other agreements or arrangements when needed on favorable terms, or at all.  If we fail to raise capital or enter into such agreements as and when needed, we may have to significantly delay, reduce or eliminate the development and commercialization of one or more of our product candidates or delay our pursuit of potential in licenses or acquisitions.

Because of the numerous risks and uncertainties associated with product development, we are unable to predict the timing or amount of increased expenses or when or if we will be able to achieve or maintain profitability. Even if we are able to generate product sales, we may not become profitable.  If we fail to become profitable or are unable to sustain profitability on a continuing basis, then we may be unable to continue our operations at planned levels and be forced to reduce or terminate our operations.

We expect that our existing cash and cash equivalents will be sufficient to fund our operating expenses and capital expenditure requirements for at least the next twelve months.  We have based this estimate on assumptions that may prove to be wrong, and we could exhaust our available capital resources sooner than we expect. Beyond that point, we will need to raise additional capital to finance our operations, which cannot be assured.

Business Update Regarding COVID-19

The current COVID-19 pandemic has presented substantial public health and economic challenges and is affecting economies, financial markets and business operations around the world. To date, we have been able to continue to supply zilovertamab and ONCT-216 clinical trial sites for patients enrolled in our ongoing clinical trials and do not currently anticipate any interruptions in the supply of zilovertamab or ONCT-216. While we are continuing the clinical trials we have underway in sites across the U.S., COVID-19 precautions have directly or indirectly impacted the timeline for some of our clinical trials. For our existing patients, we are actively working with all of our clinical trial sites to minimize disruptions and address concerns on an individual site or patient basis in order to allow participating patients to continue to receive treatment at home or in alternative healthcare settings while minimizing their potential exposure to the virus that causes COVID-19. If restrictions related to the COVID-19 outbreak continue or if additional clinical trial sites pause patient enrollment or treatments, our clinical trial milestones would be negatively impacted.  Additionally, our expectations for the timing of first-in-human dosing of ONCT-808, our ROR1 CAR-T therapy, has been delayed. Any delays in the completion of our clinical trials and any disruption in our supply chain could have a material adverse effect on our business, results of operations and financial condition. The full extent to which the COVID-19 pandemic will continue to directly or indirectly impact our business, results of operations and financial condition, will depend on future developments that are highly uncertain, including as a result of new information that may emerge concerning COVID-19 and the actions taken to contain or treat it, the success or failure of

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ongoing vaccination programs worldwide, the emergence and spread of additional variants of COVID-19, as well as the economic impact on local, regional, national and international markets.

Components of Results of Operations

Grant Revenue

We have not and do not expect to generate any product sales revenue in the foreseeable future. If our development efforts for our product candidates are successful and result in regulatory approval, we may generate product sales revenue in the future. We cannot predict if, when, or to what extent we will generate revenue from the commercialization and sale of our product candidates. We may never succeed in obtaining regulatory approval for any of our product candidates. Our total revenue to date has been derived from a California Institute for Regenerative Medicine, or CIRM, grant subaward with UC San Diego and from the National Institutes of Health, or NIH, grant awards.

In August 2017, CIRM awarded an $18.3 million grant to researchers at UC San Diego to advance the CIRLL study. We are conducting this study in collaboration with UC San Diego and estimate we will receive approximately $14.0 million in development milestone payments under research subaward agreements during the award project period, estimated to be from October 1, 2017 to March 31, 2022. In addition, we are committed to certain co-funding requirements and are required to provide UC San Diego progress and financial update reports throughout the award project period. We received subaward payments of $2.2 million and $1.4 million in the nine months ended September 30, 2021 and September 30, 2020, respectively. As of September 30, 2021: (i) the remaining estimated subaward funds available total $0.6 million, and (ii) we believe we have met our obligations under the CIRM award and UC San Diego subawards.

In August 2021, the NIH awarded us two research and development grants for up to $2.2 million to support pre-clinical and other research activities for our ONCT-216 and ONCT-534 programs, including $0.7 million payable to subawardees.  During the three and nine months ended September 30, 2021, we received no award payments from the NIH and recorded $50,000 in grant revenue.

Operating Expenses

Research and Development

Research and development expenses consist primarily of costs incurred for the preclinical and clinical development of our lead product candidate, zilovertamab, as well as ONCT-216 and ONCT-808, which include:

• expenses under agreements with consultants, third-party contract organizations, and investigative clinical trial sites that conduct research and development activities on our behalf;

• costs related to the development and manufacture of preclinical study and clinical trial material;

• salaries and employee-related costs, including stock-based compensation;

• costs incurred under our collaboration and third-party licensing agreements; and

• laboratory and vendor expenses related to the execution of preclinical and clinical trials.

We accrue all research and development costs in the period for which they are incurred. Costs for certain development activities are recognized based on an evaluation of the progress to completion of specific tasks using information and data provided to us by our vendors, collaborators and third-party service providers. Advance payments for goods or services to be received in future periods for use in research and development activities are deferred and then expensed as the related goods are delivered and as services are performed. Any unearned advances would be refunded when known.

We expect our research and development expenses to increase substantially for the foreseeable future as we: (i) invest in additional operational personnel to support our planned product development efforts, and (ii) continue to invest in developing our product candidates preclinically, advance them into later stages of clinical development, and as we begin to conduct larger clinical trials. Product candidates in later stages of clinical development generally have higher development costs than those in earlier stages of clinical development, primarily due to the increased size and duration of later-stage clinical trials.

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Our direct research and development expenses are tracked by product candidate and consist primarily of external costs, such as fees paid under third-party license agreements and to outside consultants, contract research organizations, or CROs, contract manufacturing organizations and research laboratories in connection with our preclinical development, process development, manufacturing and clinical development activities. We do not allocate employee costs and costs associated with our discovery efforts, laboratory supplies and facilities, including other indirect costs, to specific product candidates because these costs are deployed across multiple programs and, as such, are not separately classified. We use internal resources primarily to conduct our research as well as for managing our preclinical development, process development, manufacturing and clinical development activities. These employees work across multiple programs and, therefore, we do not track our costs by product candidate unless we can include them as subaward costs.

We cannot determine with certainty the timing of initiation, the duration or the completion costs of current or future preclinical studies and clinical trials of our product candidates due to the inherently unpredictable nature of preclinical and clinical development, including any potential expanded dosing beyond the original protocols based in part on ongoing clinical success and the potential effects of the COVID-19 pandemic. Clinical and preclinical development timelines, the probability of success and development costs can differ materially from expectations. We anticipate that we will make determinations as to which product candidates to pursue and how much funding to direct to each product candidate on an ongoing basis in response to the results of ongoing and future preclinical studies and clinical trials, regulatory developments and our ongoing assessments of each product candidate’s commercial potential. We will need to raise substantial additional capital in the future. In addition, we cannot forecast which product candidates may be subject to future collaborations, when such arrangements will be secured, if at all, and to what degree such arrangements would affect our development plans and capital requirements.

General and Administrative

General and administrative expenses consist primarily of personnel-related costs, insurance costs, facility costs and professional fees for legal, patent, consulting, investor and public relations, accounting and audit services. Personnel-related costs consist of salaries, benefits and stock-based compensation. We expect our general and administrative expenses will increase as we: (i) incur additional costs associated with being a public company, including audit, legal, regulatory, and tax-related services associated with maintaining compliance with exchange listing and SEC requirements, director’s and officer’s insurance premiums, and investor relations costs, (ii) hire additional personnel, and (iii) protect our intellectual property.

Interest Income

Interest income consists of interest earned on our cash equivalents, which consist of money market funds. Our interest income has not been significant due to low interest earned on invested balances.

Results of Operations

Comparison of Three and Nine Months Ended September 30, 2021 and 2020

The following table summarizes our results of operations for the three and nine months ended September 30, 2021 and 2020:

	Three Months Ended September 30,									Nine Months Ended September 30,
(in thousands)	2021			2020			Change			2021			2020			Change
Grant revenue	$	2,128		$	585		$	1,543		$	3,759		$	1,787		$	1,972
Operating expenses:
Research and development		8,963			3,047			5,916			18,068			9,558			8,510
General and administrative		2,802			1,933			869			8,977			6,910			2,067
Total operating expenses		11,765			4,980			6,785			27,045			16,468			10,577
Loss from operations		(9,637	)		(4,395	)		(5,242	)		(23,286	)		(14,681	)		(8,605	)
Interest income		7			—			7			26			13			13
Net loss	$	(9,630	)	$	(4,395	)	$	(5,235	)	$	(23,260	)	$	(14,668	)	$	(8,592	)

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Comparison of Three Months Ended September 30, 2021 and 2020

Grant Revenue

Grant revenue was $2.1 million and $0.6 million for the three months ended September 30, 2021 and 2020, respectively, an increase of $1.5 million. The increase was driven primarily by higher research and development subaward costs in 2021 as compared to 2020.

Research and Development Expenses

The following table summarizes our research and development expenses for the periods indicated:

	Three Months Ended September 30,				Increase/
(in thousands)	2021		2020		(Decrease)
Zilovertamab	$	5,176	$	1,416	$	3,760
ONCT-216		739		682		57
ONCT-808		860		—		860
Unallocated research and development expenses		2,188		949		1,239
Total research and development expenses	$	8,963	$	3,047	$	5,916

Research and development expenses for the three months ended September 30, 2021 and 2020 were $8.9 million and $3.0 million, respectively, an increase of $5.9 million. The increase was primarily due to a $4.7 million increase in direct product candidate costs and a $1.2 million increase in unallocated expenses.

Direct expenses for zilovertamab increased $3.7 million for the three months ended September 30, 2021, compared to the three months ended September 30, 2020, primarily due to an increase in manufacturing development costs.

Direct expenses for ONCT-216 increased $0.1 million for the three months ended September 30, 2021, compared to the three months ended September 30, 2020, primarily due to an increase in manufacturing development costs.

Direct expenses for ONCT-808 increased $0.9 million for the three months ended September 30, 2021, compared to the three months ended September 30, 2020, primarily due to an increase in preclinical costs.

Unallocated expenses increased $1.2 million for three months ended September 30, 2021, compared to the three months ended September 30, 2020, primarily due to higher non-cash stock-based compensation costs.

General and Administrative Expenses

General and administrative expenses for the three months ended September 30, 2021 and 2020 were $2.8 million and $1.9 million, respectively, an increase of $0.9 million. The increase is primarily due to higher personnel and professional costs of $0.7 million, primarily related to non-cash stock-based compensation expenses, and an increase in director’s and officer’s insurance costs of $0.2 million.

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Comparison of Nine Months Ended September 30, 2021 and 2020

Grant Revenue

Grant revenue for the nine months ended September 30, 2021 was $3.8 million, compared to $1.8 million for the nine months ended September 30, 2020, an increase of $2.0 million. The increase was primarily due to higher research and development subaward related costs incurred in 2021 as compared to 2020.

Research and Development Expenses

The following table summarizes our research and development expenses for the periods indicated:

	Nine Months Ended September 30,				Increase/
(in thousands)	2021		2020		(Decrease)
Zilovertamab	$	8,888	$	4,967	$	3,921
ONCT-216		2,475		1,724		751
ONCT-808		1,465		—		1,465
Unallocated research and development expenses		5,240		2,867		2,373
Total research and development expenses	$	18,068	$	9,558	$	8,510

Research and development expenses for the nine months ended September 30, 2021 and 2020 were $18.1 million and $9.6 million, respectively, an increase of $8.5 million. The increase was primarily due to a $6.1 million increase in direct product candidate costs and a $2.4 million increase in unallocated expenses.

Direct expenses for zilovertamab increased $3.9 million for the nine months ended September 30, 2021, compared to the nine months ended September 30, 2020, primarily due to: (i) an increase in manufacturing development costs, and (ii) an increase in clinical trial costs related to our ongoing CIRLL study.

Direct expenses for ONCT-216 increased $0.7 million for the nine months ended September 30, 2021, compared to the nine months ended September 30, 2020, primarily due to an increase in manufacturing development costs.

Direct expenses for ONCT-808 increased $1.5 million for the nine months ended September 30, 2021, compared to the nine months ended September 30, 2020, primarily due to an increase in preclinical costs.

Unallocated expenses increased $2.4 million for nine months ended September 30, 2021, compared to the nine months ended September 30, 2020, primarily due to higher non-cash stock-based compensation costs.

General and Administrative Expenses

General and administrative expenses for the nine months ended September 30, 2021 and 2020 were $9.0 million and $6.9 million, respectively, an increase of $2.1 million. The increase is primarily due to higher personnel and professional costs of $1.8 million, primarily related to non-cash stock-based compensation expenses, and an increase in director’s and officer’s insurance costs of $0.3 million.

Liquidity

We have incurred losses and negative cash flows from operations since inception. As of September 30, 2021, we had an accumulated deficit of $106.1 million and anticipate that we will continue to incur net losses for the foreseeable future. As of September 30, 2021, we had $97.4 million in cash and cash equivalents. We believe we have sufficient cash to fund our projected operating requirements for at least twelve months from the filing date of this Quarterly Report.  We expect our operating expenses to continue to be substantial for the foreseeable future and, as a result, we will need additional capital to fund our operations, which we may obtain through one or more public or private equity or debt financings, or other sources such as potential collaboration arrangements.

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Cash Flows

The following table summarizes our sources and uses of cash for each of the periods presented:

	Nine Months Ended September 30,
(in thousands)	2021			2020
Net cash provided by (used in):
Operating activities	$	(19,973	)	$	(13,584	)
Financing activities		616			14,792
Net increase (decrease) in cash and cash equivalents	$	(19,357	)	$	1,208

Operating activities

During the nine months ended September 30, 2021, net cash used in operating activities was $20.0 million, resulting from our net loss of $23.3 million, which included non-cash charges of $4.3 million primarily related to stock-based compensation expenses, offset by a $1.0 million change in our operating assets and liabilities. The $1.0 million change in operating assets and liabilities primarily consisted of a $0.8 million increase in prepaid and other assets, a $1.5 million decrease in deferred revenue, and a $1.3 million increase in accounts payable and accrued expenses.

Financing activities

Net cash provided by financing activities was $0.6 million for the nine months ended September 30, 2021, which resulted from net proceeds of $0.4 million received from the exercise of common stock options and $0.2 million received from the exercise of common stock warrants. Net cash provided by financing activities was $14.8 million for the nine months ended September 30, 2020, which resulted primarily from $14.5 million in net proceeds received from registered direct offerings completed in May 2020 and July 2020, and a firm commitment underwritten offering completed in September 2020, and $0.3 million received under the Paycheck Protection Program of The CARES Act in May 2020.

Funding Requirements

We expect that our existing cash and cash equivalents will be sufficient to fund our operations into 2023. However, our forecast of the period of time through which our financial resources will be adequate to support our operations is a forward-looking statement that involves risks and uncertainties, and actual results could vary materially. We have based this estimate on plans that may change as circumstances evolve and assumptions that may prove to be wrong, and we could use our capital resources sooner than we expect. Additionally, the process of testing product candidates in clinical trials is costly, and the timing of progress, potential amendments, or changes in protocols for our existing studies beyond our planned study protocols based in part on our clinical progress, and expenses in these trials is uncertain.

Our future capital requirements will depend on many factors, including:

• the type, number, scope, progress, expansions, results, costs and timing of, our preclinical studies and clinical trials of our product candidates which we are pursuing or may choose to pursue in the future;

• the costs incurred as a result of the COVID-19 pandemic, including clinical trial delays;

• the costs and timing of manufacturing for our product candidates, including commercial manufacturing if any product candidate is approved;

• the future potential costs of obtaining ibrutinib, for which we currently obtain supply at no cost under our clinical supply agreement with Pharmacyclics LLC, and vincristine to conduct our clinical trials of zilovertamab and ONCT-216, respectively;

• the costs, timing and outcome of regulatory review of our product candidates;

• the costs of obtaining, maintaining and enforcing our patents and other intellectual property rights;

• the costs associated with hiring additional personnel and consultants as our preclinical and clinical activities increase;

• the costs and timing of establishing or securing sales and marketing capabilities if any product candidate is approved;

• our ability to achieve sufficient market acceptance, adequate coverage and reimbursement from third-party payors and adequate market share and revenue for any approved products;

• the terms and timing of establishing and maintaining collaborations, licenses and other similar arrangements; and

• costs associated with any products or technologies that we may in-license or acquire.

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Until such time, if ever, as we can generate substantial product revenues to support our cost structure, we expect to finance our losses from operations and capital funding needs through a combination of equity offerings, debt financings, government funding and other sources, including potentially collaborations, licenses and other similar arrangements. To the extent we raise additional capital through the sale of debt or equity securities, the ownership interest of our stockholders will be or could be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect the rights of our common stockholders. Debt financing and preferred equity financing, if available, may involve agreements that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends. If we raise funds through collaborations, licenses and other similar arrangements with third parties, we may have to relinquish valuable rights to our technologies, future revenue streams, research programs or product candidates or grant licenses on terms that may not be favorable to us and/or may reduce the value of our common stock. If we are unable to raise additional funds through debt or equity financings when needed, we may be required to delay, limit, reduce or terminate our product development or future commercialization efforts or grant rights to develop and market our product candidates even if we would otherwise prefer to develop and market such product candidates by ourselves. There can be no assurance that we will be able to obtain any sources of financing on acceptable terms, or at all.

Obligations and Commitments

We are party to a number of license agreements, pursuant to which we have payment obligations that are contingent upon future events such as our achievement of specified development, regulatory and commercial milestones and are required to make royalty payments in connection with the sale of products developed under those agreements. As of September 30, 2021, we were unable to estimate the timing or likelihood of achieving the milestones or making future product sales.  See Note 4 to our condensed consolidated financial statements included elsewhere in this Quarterly Report for a description of these agreements.

We enter into contracts in the normal course of business with clinical trial sites and clinical supply manufacturers and with vendors for preclinical studies, research supplies and other services and products for operating purposes. These contracts generally provide for termination after a notice period.

Critical Accounting Policies

Our management’s discussion and analysis of our financial condition and results of operations is based on our condensed consolidated financial statements, which have been prepared in accordance with generally accepted accounting principles in the United States. The preparation of the financial statements requires us to make estimates and judgments that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements, as well as the reported expenses incurred during the reporting periods.

Our estimates are based on our historical experience, trends and various other factors that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value 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 consider our critical accounting policies and estimates to be related to research and development expenses and accruals, and revenue recognition. There have been no material changes to our critical accounting policies and estimates during the nine months ended September 30, 2021, from those disclosed in “Management’s Discussion and Analysis of Financial Condition and Results of Operations – Critical Accounting Policies,” included in our Annual Report on Form 10-K/A.

Off-Balance Sheet Arrangements

We did not have during the periods presented, and we do not currently have, any off-balance sheet arrangements, as defined under SEC rules.

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ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISKS

We are a smaller reporting company, as defined by Rule 12b-2 of the Exchange Act and are not required to provide the information required under this item.

ITEM 4. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

We maintain “disclosure controls and procedures” as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act that are designed to ensure that information required to be disclosed in the reports we file and submit 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 us in the reports we file or submit under the Exchange Act is accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate to allow timely decisions regarding required disclosure. In designing and evaluating our disclosure controls and procedures, management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving their objectives, and management necessarily applies judgment in evaluating the benefits of possible controls and procedures relative to their costs.

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, who serve as our principal executive officer and principal financial officer, respectively, has evaluated the effectiveness of our disclosure controls and procedures as of September 30, 2021. Based on such evaluation, our Chief Executive Officer and Chief Financial Officer have concluded that our disclosure controls and procedures were effective at the reasonable assurance level as of such date.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting identified in connection with the evaluation required by Rule 13a-15(d) and 15d-15(d) of the Exchange Act that occurred during the three months ended September 30, 2021 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Inherent Limitations of Disclosure Controls and Internal Control over Financial Reporting

Because of their inherent limitations, our disclosure controls and procedures and our internal control over financial reporting may not prevent material errors or fraud. A control system, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. The effectiveness of our disclosure controls and procedures and our internal control over financial reporting is subject to risks, including that the controls may become inadequate because of changes in conditions or that the degree of compliance with our policies or procedures may deteriorate.

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PART II — OTHER INFORMATION

Item 1. Legal Proceedings

From time to time, we may be involved in various claims and legal proceedings relating to claims arising out of our operations. We are not currently a party to any legal proceedings that, in the opinion of our management, are likely to have a material adverse effect on our business. Regardless of outcome, litigation can have an adverse impact on us because of defense and settlement costs, diversion of management resources and other factors.

Item 1A. Risk Factors

An investment in our securities involves a high degree of risk. You should carefully consider the specific factors discussed below, as well as all other information included in this Quarterly Report on Form 10-Q, including our financial statements, the notes thereto and the section titled “Management’s Discussion and Analysis of Financial Condition and Results of Operations.” If any of the following risks actually occurs, our business, financial condition, operating results, prospects and ability to accomplish our strategic objectives could be materially harmed. As a result, the trading price of our common stock could decline and you could lose all or part of your investment. The risks and uncertainties we have described are not the only ones we face. Additional risks and uncertainties not presently known to us or that we currently deem immaterial may also affect our operations. The occurrence of any of these known or unknown risks might cause you to lose all or part of your investment in our securities.

There have been no material changes to the risk factors included in “Item 1A. Risk Factors” of our Annual Report on Form 10-K/A for the year ended December 31, 2020.

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

None.

Item 3. Defaults Upon Senior Securities

None.

Item 4. Mine Safety Disclosures

Not applicable.

ITEM 5. OTHER INFORMATION

As previously disclosed, in connection with the merger between GTx, Inc. and Oncternal Therapeutics, Inc. on June 7, 2019, we entered into a Contingent Value Rights Agreement, or the CVR Agreement, with Marc S. Hanover, as representative of the holders of contingent value rights, or CVRs, and Computershare Inc, as rights agent. The CVRs entitle the holders to receive payments based on dual action androgen inhibitor, or DAARI, technologies, which were previously known as selective androgen receptor degrader, or SARD, technologies.

Under the CVR Agreement, CVR holders were entitled to, in the aggregate: (i) 75% of any net proceeds received during the 15-year period after the closing of the merger, or the CVR Term, from the grant, sale or transfer of rights to DAARI or selective androgen receptor modulator, or SARM, technology that occurs during the 10-year period after the closing (or in the 11^th year if based on a term sheet approved during the initial 10-year period), or Net Proceeds, excluding certain costs; and (ii) if applicable either 5% or 10% of net sales of products by us or our affiliates incorporating the DAARI technologies, or Net Sales, during the CVR Term.

On November 1, 2021, the parties entered into the First Amendment to Contingent Value Rights Agreement, or the CVR Amendment, to amend the CVR Agreement. The CVR Amendment: (i) increases our share of Net Proceeds from 25% to 50%; and (ii) provides that CVR holders will receive 5% of Net Sales, after deducting royalties paid to The University of Tennessee Research Foundation. In return, the CVR Amendment provides that we and our affiliates can deduct from Net Proceeds only certain costs that occur after November 1, 2021. The current CVR Agreement would have allowed us to deduct costs beginning in June 2019. The CVR Amendment also removes several provisions related to SARM products as we no longer have any rights to, or obligations under, the CVR Agreement regarding those products.

The foregoing description of the CVR Agreement does not purport to be complete and is qualified in its entirety by reference to the CVR Agreement, which is incorporated herein by reference to Exhibit 10.1 to our Current Report on Form 8-K, filed on June 10, 2019. The foregoing description of the CVR Amendment does not purport to be complete and is qualified in its entirety by reference to the CVR Amendment, which is filed as Exhibit 10.1 to this Quarterly Report on Form 10-Q and is incorporated herein by reference.

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Item 6. Exhibits.

EXHIBIT INDEX

		Incorporated by Reference
Exhibit Number	Description of Exhibit	Form	File Number	Date of Filing	Exhibit Number	Filed Herewith
3.1	Restated Certificate of Incorporation of the Registrant	S-3	333-127175	August 4, 2005	4.1
3.2	Certificate of Amendment of Restated Certificate of Incorporation of the Registrant	8-K	000-50549	May 6, 2011	3.2
3.3	Certificate of Amendment of Restated Certificate of Incorporation of the Registrant	8-K	000-50549	May 9, 2014	3.3
3.4	Certificate of Amendment of Restated Certificate of Incorporation of the Registrant	10-Q	000-50549	May 11, 2015	3.4
3.5	Certificate of Amendment of Restated Certificate of Incorporation of the Registrant	8-K	000-50549	December 5, 2016	3.1
3.6	Certificate of Amendment of Restated Certificate of Incorporation of the Registrant	8-K	000-50549	September 10, 2019	3.1
3.7	Certificate of Amendment of Restated Certificate of Incorporation of the Registrant	8-K	000-50549	September 10, 2019	3.2
3.8	Certificate of Amendment of Restated Certificate of Incorporation of the Registrant	8-K	000-50549	May 25, 2021	3.1
3.9	Amended and Restated Bylaws of the Registrant	8-K	000-50549	September 10, 2019	3.3
4.1	Specimen of Common Stock Certificate	10-Q	000-50549	August 9, 2019	4.2
4.2	Form of Common Stock Warrant, issued by Registrant pursuant to the Purchase Agreement, dated September 25, 2017, between the Registrant and the purchasers identified in Exhibit A therein	S-3	333-221040	October 20, 2017	4.9
4.3	Form of Warrant to purchase shares of Series B-2 Preferred Stock of the Registrant	S-4	333-230758	April 8, 2019	4.11
4.4	Form of Amendment to Warrant to Purchase shares of Series B-2 Preferred Stock of the Registrant	10-Q	000-50549	August 9, 2019	4.1
4.5	Form of Common Stock Warrant, issued by the Registrant pursuant to the Securities Purchase Agreement, dated May 19, 2020, between the Registrant the purchasers signatory thereto	8-K	000-50549	May 21, 2020	4.1
4.6	Form of Placement Agent Warrant, issued by the Registrant pursuant to the Securities Purchase Agreement, dated May 19, 2020, between the Registrant and the purchasers signatory thereto	8-K	000-50549	May 21, 2020	4.2
4.7	Form of Common Stock Warrant, issued by the Registrant pursuant to the Securities Purchase Agreement, dated July 17, 2020, between the Registrant and the purchasers signatory thereto	8-K	000-50549	July 21, 2020	4.1
4.8	Form of Placement Agent Warrant, issued by the Registrant pursuant to the Securities Purchase Agreement, dated July 17, 2020, between the Registrant and the purchasers signatory thereto	8-K	000-50549	July 21, 2020	4.2

31

		Incorporated by Reference
Exhibit Number	Description of Exhibit	Form	File Number	Date of Filing	Exhibit Number	Filed Herewith
4.9	Form of Underwriter Warrant, issued by Registrant pursuant to the Amended and Restated Underwriting Agreement, dated August 27, 2020, between the Registrant and H.C. Wainwright & Co., LLC (“HCW”)	8-K	000-50549	August 31, 2020	4.1
4.10	Form of Underwriter Warrant, issued by the Registrant pursuant to the Amended and Restated Underwriting Agreement, dated November 17, 2020, between the Registrant and HCW	8-K	000-50549	November 19, 2020	4.1
4.11	Form of Underwriter Warrant, issued by the Registrant pursuant to the Amended and Restated Underwriting Agreement, dated December 9, 2020, between the Registrant and HCW	8-K	000-50549	December 11, 2020	4.1
10.1	First Amendment to Contingent Value Rights Agreement dated November 1, 2021 by and between the Registrant, Marc S. Hanover, as the Holders’ Representative, and Computershare Inc., as Rights Agent					X
31.1	Certification of Principal Executive Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002					X
31.2	Certification of Principal Financial Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002					X
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					X
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					X
101.INS	Inline XBRL Instance Document – the instance document does not appear in the Interactive Data File because XBRL tags are embedded within the Inline XBRL document.					X
101.SCH	Inline XBRL Taxonomy Extension Schema Document					X
101.CAL	Inline XBRL Taxonomy Extension Calculation Linkbase Document					X
101.DEF	Inline XBRL Taxonomy Extension Definition Linkbase Document					X

32

		Incorporated by Reference
Exhibit Number	Description of Exhibit	Form	File Number	Date of Filing	Exhibit Number	Filed Herewith
101.LAB	Inline XBRL Taxonomy Extension Label Linkbase Document					X
101.PRE	Inline XBRL Taxonomy Extension Presentation Linkbase Document					X
104	Cover Page Interactive Data File (embedded within the Inline XBRL document)					X

* These certifications are being furnished solely to accompany this quarterly report pursuant to 18 U.S.C. Section 1350, and are not being filed for purposes of Section 18 of the Securities Exchange Act of 1934 and are not subject to the liability of that section. These certifications are not to be incorporated by reference into any filing of Oncternal Therapeutics, Inc., whether made before or after the date hereof, regardless of any general incorporation language in such filing.

# Management compensatory plan or arrangement.

33

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.

	Oncternal Therapeutics, Inc.
Date: November 4, 2021	By:	/s/ James B. Breitmeyer
		Name: James B. Breitmeyer
		Title:  President and Chief Executive Officer
Date: November 4, 2021	By:	/s/ Richard G. Vincent
		Name: Richard G. Vincent
		Title:   Chief Financial Officer

34

EX-10.1

EXHIBIT 10.1

FIRST AMENDMENT TO CONTINGENT VALUE RIGHTS AGREEMENT

This First Amendment to Contingent Value Rights Agreement (this “Amendment”)dated as of November 1, 2021 (the “Amendment Effective Date”), is entered into by and among Oncternal Therapeutics, Inc. (F/K/A GTx, Inc.), a Delaware corporation (“Parent”), Marc S. Hanover, as representative of Holders (“Holders’ Representative”), and Computershare Inc., as Rights Agent, and amends that certain Contingent Value Rights Agreement dated as of June 7, 2019 by and among Parent, Holders’ Representative and Rights Agent (the “Agreement”).  Capitalized terms used herein without definition have the meanings provided to such terms in the Agreement.

RECITALS

WHEREAS, the transactions under that certain Merger Agreement, dated as of March 6, 2019, among Parent, Sub, and the Company closed on June 7, 2019.

WHEREAS, Parent and Holders’ Representative desire to amend the Agreement to revise certain terms related to the economic interests of Parent and Holders.

WHEREAS, pursuant to Section 4.3 of the Agreement, Parent determined it would no longer be commercially reasonable to expend any efforts to maintain and divest the SARM Technology, SARM Compounds and SARM Products and, effective March 31, 2020, Parent terminated the UTRF SARM License Agreement and no longer has any obligation to maintain or divest the SARM Technology.

WHEREAS, pursuant to Section 5.2 of the Agreement, the Acting Holders, the Holders’ Representative, Parent (when authorized by a Board Resolution), and the Rights Agent hereby provide their consent to amend the Agreement as set forth below.

AGREEMENT

The parties agree as follows:

1.Amendments

(a)Section 1.31 of the Agreement is hereby amended and restated in its entirety as follows:

““Net Sales Proceeds” means, for any CVR Payment Period and SARD Product, five percent (5%) of Adjusted Net Sales of such SARD Product (the “Base Proceeds”), minus up to fifty percent (50%) of all fees, milestones, royalties and other payments paid by Parent and its Affiliates during the CVR Term to any Third Party licensor (but excluding UTRF) in consideration for a license to such Third Party’s patents that would be infringed, absent such license, by the manufacture, use, sale or import of such SARD Product (such 50% amount, the “Third Party IP Credit”); provided that the Net Sales Proceeds for any CVR Payment Period and SARD Product will not be reduced on account of the Third Party IP Credit below fifty percent (50%) of the Base Proceeds.  “Adjusted Net Sales” means, for any CVR Payment Period, Net Sales for such CVR Payment Period minus royalties paid by Parent and its Affiliates to UTRF pursuant to the UTRF SARD License Agreement for such CVR Payment Period.  For clarity, if aggregate Net Sales for any SARD Product during any CVR Payment Period are less than zero, there will be no Net Sales Proceeds payable for such SARD Product for such CVR Payment Period.  For clarity, any particular amounts included in the Third Party IP Credit may not be deducted more than once from any Net Sales.”

(b)Section 1.35(a) of the Agreement is hereby amended and restated in its entirety as follows:

“(a)with respect to a SARD Deal, the sum of: (i) all fees, milestone payments and royalties paid by Parent and its Affiliates to UTRF pursuant to the UTRF SARD License Agreement with

1

respect to the SARD Technology or SARD Product or SARD Compound that is subject to such SARD Deal, plus (ii) all fees, milestones, royalties and other payments paid by Parent and its Affiliates to any other Third Party licensor in consideration for a license to such Third Party’s patents that would be infringed, absent such license, by the practice of such SARD Technology or the manufacture, use or sale of such SARD Product, plus (iii) all patent prosecution and maintenance costs incurred by Parent and its Affiliates for such SARD Technology, plus (iv) fifty percent (50%) of all Development Costs for such SARD Technology, SARD Compound or SARD Product, plus (v) one hundred percent (100%) of the out-of-pocket transaction costs incurred by Parent and its Affiliates to Third Parties for the negotiation, entry into and closing of such SARD Deal, including any broker fees, finder’s fees, advisory fees, accountant or attorney’s fees, in each case (i)-(v) to the extent such costs have been incurred following the Amendment Effective Date and during the CVR Term and are not reimbursed or paid to Parent or its Affiliate by a Third Party (including a Governmental Entity).”

(c)Section 2.4(b) of the Agreement is hereby amended and restated in its entirety as follows:

“(b)Subsequent to any SARD Deal, within sixty (60) days after the end of each CVR Payment Period during the CVR Term, commencing with the CVR Payment Period in which Parent or its Affiliate first receives Gross Consideration, Parent shall deliver to the Holders’ Representative and Rights Agent a CVR Payment Statement for such CVR Payment Period. Concurrent with the delivery of each CVR Payment Statement, Parent shall pay the Rights Agent in U.S. dollars an amount equal to fifty percent (50%) of the Net Proceeds (if any) received in the applicable CVR Payment Period. For clarity, to the extent that any non-cash consideration in Gross Consideration is monetized after the end of the CVR Term, Parent will include a description of such non-cash consideration in the CVR Payment Statement for the CVR Payment Period in which it is received, and will make the applicable payment to the Rights Agent upon monetization of such non-cash consideration (regardless of whether such monetization occurs after the end of the CVR Term).  For further clarity, following a SARD Deal, any sale of SARD Products by the counterparty to such SARD Deal will not be included in Net Sales, and Parent shall not be obligated to make any payments to the Rights Agent regarding Net Sales Proceeds based on such sales (it being understood that payments made by such counterparty to Parent or its Affiliates based on such sales will be included in Gross Consideration).”

2. Expenses.  Parent shall pay the reasonable and documented fees and expenses of counsel for Holder’s Representative incurred in connection with this Amendment.

3. Reference to and Effect on the Agreement.  On or after the Amendment Effective Date, each reference in the Agreement to “this Agreement,” “hereunder,” “herein” or words of like import shall mean and be a reference to the Agreement as amended hereby.

4. No Other Amendments.  Except as set forth herein, the Agreement shall remain in full force and effect in accordance with its terms.

5. Recitals.  The introductory paragraph and recitals of this Agreement are expressly incorporated herein and made part of this Agreement.

6. Counterparts.  This Amendment may be executed in two (2) or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument. Counterparts may be delivered via facsimile, electronic mail (including pdf or any electronic signature complying with the U.S. federal ESIGN Act of 2000, e.g., www.docusign.com) or other

2

transmission method and any counterpart so delivered shall be deemed to have been duly and validly delivered and be valid and effective for all purposes.

7. Governing Law.  This Amendment shall be governed by and construed in accordance with the laws of the State of Delaware without reference to any principle or rule (whether of the State of Delaware or any other jurisdiction) that would cause the application of laws of any jurisdiction other than those of the State of Delaware.

[Remainder of page intentionally left blank]

3

IN WITNESS WHEREOF, each of the Parties has caused this First Amendment to Contingent Value Rights Agreement to be executed on its behalf by its duly authorized officers, and the Holders’ Representative has executed this Contingent Value Rights Agreement, as of the day and year first above written.

Oncternal Therapeutics, Inc.

By:/s/ James Breitmeyer

Name:James Breitmeyer, M.D., Ph.D.

Title:President and Chief Executive Officer

Computershare Inc.

Computershare Trust Company, N.A.

By:/s/ Collin Ekeogu

Name:Collin Ekeogu

Title:Manager, Corporate Actions

Marc S. Hanover

By:/s/ Marc S. Hanover

[Signature Page to First Amendment to Contingent Value Rights Agreement]

EX-31.1

Exhibit 31.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, James B. Breitmeyer, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Oncternal 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 consolidated 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.

/s/ James B. Breitmeyer

President and Chief Executive Officer

(Principal Executive Officer)

Dated: November 4, 2021

EX-31.2

Exhibit 31.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Richard G. Vincent, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Oncternal 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 consolidated 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.

/s/ Richard G. Vincent

Chief Financial Officer

(Principal Financial Officer)

Dated: November 4, 2021

EX-32.1

Exhibit 32.1

CERTIFICATION

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

(Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code)

In connection with the Quarterly Report on Form 10-Q of Oncternal Therapeutics, Inc. (the “Company”) for the period ended September 30, 2021, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, James B. Breitmeyer, as 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. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ James B. Breitmeyer

President and Chief Executive Officer

(Principal Executive Officer)

Dated: November 4, 2021

The foregoing certification is being furnished solely to accompany the Report pursuant to 18 U.S.C. Section 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. A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

Exhibit 32.2

CERTIFICATION

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

(Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code)

In connection with the Quarterly Report on Form 10-Q of Oncternal Therapeutics, Inc. (the “Company”) for the period ended September 30, 2021, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Richard G. Vincent, as 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. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Richard G. Vincent

Chief Financial Officer

(Principal Financial Officer)

Dated: November 4, 2021

The foregoing certification is being furnished solely to accompany the Report pursuant to 18 U.S.C. Section 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. A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2021	Oct. 28, 2021
Cover [Abstract]
Entity Registrant Name	Oncternal Therapeutics, Inc.
Entity Central Index Key	0001260990
Document Type	10-Q
Document Period End Date	Sep. 30, 2021
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Trading Symbol	ONCT
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		49,427,220
Entity File Number	000-50549
Entity Tax Identification Number	62-1715807
Entity Address, Address Line One	12230 El Camino Real
Entity Address, Address Line Two	Suite 300
Entity Address, City or Town	San Diego
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92130
City Area Code	858
Local Phone Number	434-1113
Entity Interactive Data Current	Yes
Title of 12(b) Security	Common Stock, $0.001 par value
Security Exchange Name	NASDAQ
Entity Incorporation, State or Country Code	DE
Document Quarterly Report	true
Document Transition Report	false

XML

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 97,380	$ 116,737
Prepaid and other	2,140	1,266
Total current assets	99,520	118,003
Right-of-use asset	119	40
Other assets	657	766
Total assets	100,296	118,809
Current liabilities:
Accounts payable	2,746	1,143
Accrued liabilities	2,797	3,042
Deferred grant revenue	158	1,633
Lease liability	119	40
Total current liabilities	5,820	5,858
Commitments and contingencies (Note 3)
Stockholders’ equity:
Preferred stock, $0.001 par value, authorized shares – 5,000; issued and outstanding shares – none
Common stock, $0.001 par value; authorized shares – 120,000; issued and outstanding shares – 49,427 and 48,802 at September 30, 2021 and December 31, 2020, respectively	49	49
Additional paid-in capital	200,484	195,699
Accumulated deficit	(106,057)	(82,797)
Total stockholders’ equity	94,476	112,951
Total liabilities and stockholders’ equity	$ 100,296	$ 118,809

XML

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2021	Dec. 31, 2020
Statement Of Financial Position [Abstract]
Preferred stock, par value	$ 0.001	$ 0.001
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	$ 0.001	$ 0.001
Common stock, shares authorized	120,000,000	120,000,000
Common stock, shares issued	49,427,000	48,802,000
Common stock, shares outstanding	49,427,000	48,802,000

XML

Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Grant revenue	$ 2,128	$ 585	$ 3,759	$ 1,787
Operating expenses:
Research and development	8,963	3,047	18,068	9,558
General and administrative	2,802	1,933	8,977	6,910
Total operating expenses	11,765	4,980	27,045	16,468
Loss from operations	(9,637)	(4,395)	(23,286)	(14,681)
Interest income	7		26	13
Net loss	$ (9,630)	$ (4,395)	$ (23,260)	$ (14,668)
Net loss per share, basic and diluted	$ (0.19)	$ (0.22)	$ (0.47)	$ (0.85)
Weighted-average shares outstanding, basic and diluted	49,393	20,126	49,285	17,251

XML

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities
Net loss	$ (23,260)	$ (14,668)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation	4,162	1,149
Non-cash lease expense	125	111
Changes in operating assets and liabilities:
Prepaid and other	(765)	(711)
Accounts payable	1,603	106
Accrued liabilities	(238)	958
Change in lease liability	(125)	(111)
Deferred grant revenue	(1,475)	(418)
Net cash used in operating activities	(19,973)	(13,584)
Cash flows from financing activities
Proceeds from payroll protection program loan payable		301
Proceeds from exercise of stock options	414	4
Proceeds from issuance of common stock and common stock warrants, net		14,487
Net cash provided by financing activities	616	14,792
Proceeds from the exercise of warrants	202
Net increase (decrease) in cash and cash equivalents	(19,357)	1,208
Cash and cash equivalents at beginning of period	116,737	20,051
Cash and cash equivalents at end of period	97,380	21,259
Supplemental disclosure of non-cash financing activities:
Cashless exercise of warrants	$ 1,836
Payment of 2019 bonus awards with stock options in lieu of cash		415
Fair value of warrants issued to placement agent		$ 729

XML

Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit
Balance at Dec. 31, 2019	$ 14,312	$ 15	$ 79,869	$ (65,572)
Balance (in shares) at Dec. 31, 2019		15,387,000
Exercise of stock options for cash	4		4
Exercise of stock options for cash (in shares)		5,000
Issuance of common stock and common stock warrants, net of issuance costs	14,479	$ 7	14,472
Issuance Of Common Stock And Warrants Net Of Issuance Costs Shares		6,955,000
Vesting related to unvested share liability	9		9
Stock-based compensation	1,149		1,149
Payment of 2019 bonus awards with stock options in lieu of cash	415		415
Net loss	(14,668)			(14,668)
Balance at Sep. 30, 2020	15,700	$ 22	95,918	(80,240)
Balance (in shares) at Sep. 30, 2020		22,347,000
Balance at Jun. 30, 2020	9,598	$ 17	85,426	(75,845)
Balance (in shares) at Jun. 30, 2020		17,336,000
Issuance of common stock and common stock warrants, net of issuance costs	10,087	$ 5	10,082
Issuance Of Common Stock And Warrants Net Of Issuance Costs Shares		5,011,000
Vesting related to unvested share liability	3		3
Stock-based compensation	407		407
Net loss	(4,395)			(4,395)
Balance at Sep. 30, 2020	15,700	$ 22	95,918	(80,240)
Balance (in shares) at Sep. 30, 2020		22,347,000
Balance at Dec. 31, 2020	$ 112,951	$ 49	195,699	(82,797)
Balance (in shares) at Dec. 31, 2020	48,802,000	48,802,000
Exercise of stock options for cash	$ 414		414
Exercise of stock options for cash (in shares)	106,163,000	106,000
Exercise of warrants for cash	$ 202		202
Exercise of warrants for cash (in shares)		60,000
Cashless exercise of warrants		459,000
Vesting related to unvested share liability	7		7
Stock-based compensation	4,162		4,162
Net loss	(23,260)			(23,260)
Balance at Sep. 30, 2021	$ 94,476	$ 49	200,484	(106,057)
Balance (in shares) at Sep. 30, 2021	49,427,000	49,427,000
Balance at Jun. 30, 2021	$ 102,519	$ 49	198,897	(96,427)
Balance (in shares) at Jun. 30, 2021		49,385,000
Exercise of warrants for cash	97		97
Exercise of warrants for cash (in shares)		42,000
Vesting related to unvested share liability	2		2
Stock-based compensation	1,488		1,488
Net loss	(9,630)			(9,630)
Balance at Sep. 30, 2021	$ 94,476	$ 49	$ 200,484	$ (106,057)
Balance (in shares) at Sep. 30, 2021	49,427,000	49,427,000

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Condensed Consolidated Statements of Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020
Statement Of Stockholders Equity [Abstract]
Common stock and common stock warrants, issuance cost	$ 1,165	$ 1,767

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Description of Business, Basis of Presentation and Summary of Significant Accounting Policies

9 Months Ended

Sep. 30, 2021

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Description of Business, Basis of Presentation and Summary of Significant Accounting Policies

1. Description of Business, Basis of Presentation and Summary of Significant Accounting Policies

Description of Business

Oncternal Therapeutics, Inc. (“Oncternal” or the “Company”), formerly known as GTx, Inc., was incorporated in Tennessee in September 1997 and reincorporated in Delaware in 2003 and is based in San Diego, California.  Oncternal is a clinical-stage biopharmaceutical company focused on the development of novel oncology therapies for the treatment of cancers with critical unmet medical need. The Company’s clinical pipeline includes zilovertamab (formerly cirmtuzumab), a humanized monoclonal antibody that binds to ROR1 (Receptor-tyrosine kinase-like Orphan Receptor 1), and ONCT-216 (formerly TK216), a small molecule inhibiting the biological activity of ETS-family transcription factor oncoproteins. The Company is also developing ONCT-808, a chimeric antigen receptor (CAR)-T cell therapy product candidate that targets ROR1, and ONCT-534 (formerly GTX-534), a dual action androgen receptor inhibitor (“DAARI”) product candidate for the treatment of castration-resistant prostate and other androgen receptor-driven cancers. The DAARI program was acquired in the Merger (described below) and was previously known as the selective androgen receptor degrader (“SARD”) program. See Note 7.

Merger

On June 7, 2019, the Company, then operating as GTx, Inc. (“GTx”), completed the merger contemplated by its Agreement and Plan of Merger and Reorganization, as amended (the “Merger Agreement”), with privately-held Oncternal Therapeutics, Inc. (“Private Oncternal”) and Grizzly Merger Sub, Inc., a wholly-owned subsidiary of the Company (“Merger Sub”), dated March 6, 2019. Under the Merger Agreement, Merger Sub merged with and into Private Oncternal, with Private Oncternal surviving as a wholly-owned subsidiary of the Company (the “Merger”). GTx changed its name to Oncternal Therapeutics, Inc., and Private Oncternal, which remains a wholly-owned subsidiary of the Company, changed its name to Oncternal Oncology, Inc. On June 10, 2019, the Company’s common stock began trading on The Nasdaq Capital Market under the ticker symbol “ONCT.”

Except as otherwise indicated, references herein to “Oncternal,” and “the Company,” refer to Oncternal Therapeutics, Inc. on a post-Merger basis, and the term “Private Oncternal” refers to the business of privately-held Oncternal Therapeutics, Inc., prior to completion of the Merger.  References to GTx refer to GTx, Inc. prior to completion of the Merger.

Principles of Consolidation

The condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries, Oncternal Oncology, Inc. and Oncternal, Inc. All intercompany accounts and transactions have been eliminated in the preparation of the condensed consolidated financial statements.

Liquidity and Going Concern

The Company follows Accounting Standards Codification (“ASC”) Topic 205-40, Presentation of Financial Statements—Going Concern, which requires that management evaluate whether there are relevant conditions and events that in the aggregate raise substantial doubt about the entity’s ability to continue as a going concern and to meet its obligations as they become due within one year after the date that the financial statements are issued.

The condensed consolidated financial statements have been prepared assuming the Company will continue as a going concern, which contemplates the realization of assets and the satisfaction of liabilities in the normal course of business.  As of September 30, 2021, the Company had $97.4 million in cash and cash equivalents. The Company believes it has sufficient cash to fund its projected operating requirements for at least twelve months from the filing date of this Quarterly Report.

From inception, the Company has devoted substantially all of its efforts to drug discovery and development and conducting preclinical studies and clinical trials. The Company has a limited operating history and the sales and income potential of the Company’s business and market are unproven. Successful transition to attaining profitable operations is dependent upon achieving a level of revenues adequate to support the Company’s cost structure.  The Company has experienced net losses and negative cash flows from operating activities since its inception and has an accumulated deficit of $106.1 million as of September 30, 2021. The Company expects to continue to incur net losses for the foreseeable future and believes it will need to raise substantial additional capital to accomplish its business plan over the next several years. The Company plans to continue to fund its losses from operations and capital funding needs through a combination of equity offerings, debt financings or other sources, including potential collaborations, licenses and other similar arrangements. If the Company is unable to secure adequate additional funding, the Company may be forced to make reductions in spending, extend payment terms with suppliers, liquidate assets where possible, or suspend or curtail planned programs.

Any of these actions could materially harm the Company’s business, results of operations and future prospects. There can be no assurance as to the availability or terms upon which such financing and capital might be available in the future. 

Basis of Presentation

The accompanying interim condensed financial statements are unaudited.  The unaudited condensed consolidated financial statements have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission (“SEC”) and with generally accepted accounting principles in the United States of America (“GAAP”). These unaudited condensed consolidated financial statements have been prepared on the same basis as the audited, consolidated financial statements and include all adjustments, consisting of only normal recurring accruals, which in the opinion of management are necessary to present fairly the Company’s financial position as of the interim date and results of operations for the interim periods presented. The preparation of financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of expenses during the reporting period. Actual results could differ materially from those estimates. These unaudited condensed consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements for the year ended December 31, 2020, filed with the SEC on its Annual Report on Form 10-K/A on March 12, 2021. The results presented in these unaudited condensed consolidated financial statements are not necessarily indicative of the results expected for the full fiscal year or any other interim period or any future year or period.

Use of Estimates

The Company’s condensed consolidated financial statements are prepared in accordance with GAAP. The preparation of the Company’s condensed consolidated financial statements and accompanying notes requires it to make estimates and assumptions that impact the reported amounts of assets, liabilities, revenues and expenses and the disclosure of contingent assets and liabilities. Significant estimates consist of those used to determine the fair value of the Company’s stock-based awards and those used to determine grant revenue and accruals for research and development costs. Although these estimates are based on the Company’s knowledge of current events and actions it may undertake in the future, actual results may ultimately materially differ from these estimates and assumptions.

Cash and Cash Equivalents

The Company considers all highly liquid investments with maturities of three months or less when purchased to be cash equivalents. Cash and cash equivalents include cash in readily available checking accounts and money market accounts.

Concentration of Credit Risk

Financial instruments that potentially subject the Company to significant concentrations of credit risk consist primarily of cash and cash equivalents. The Company maintains deposits in federally insured financial institutions in excess of federally insured limits. The Company has not experienced any losses in such accounts and believes it is not exposed to significant risk on its cash balances due to the financial position of the depository institution in which those deposits are held. Additionally, the Company established guidelines regarding approved investments and maturities of investments, which are designed to maintain safety and liquidity.

Patent Costs

Costs related to filing and pursuing patent applications are recorded as general and administrative expense and expensed as incurred since recoverability of such expenditures is uncertain.

Research and Development Expenses and Accruals

Research and development expenses consist of costs incurred for the Company’s own and for sponsored and collaborative research and development activities. Research and development costs are expensed as incurred and include manufacturing process development costs, manufacturing costs, costs associated with preclinical studies and clinical trials, regulatory and medical affairs activities, quality assurance activities, salaries and benefits, including stock-based compensation, fees paid to third-party consultants, license fees and overhead.

The Company has entered into various research and development contracts with research institutions, clinical research organizations, clinical manufacturing organizations and other companies. Payments for these activities are based on the terms of the individual agreements, which may differ from the pattern of costs incurred, and payments made in advance of performance are reflected in the accompanying consolidated balance sheets as prepaid expenses and other assets or accrued liabilities. The Company records accruals for estimated costs incurred for ongoing research and development activities and all clinical trial expenses are included in research and development expenses. When evaluating the adequacy of the accrued liabilities, the Company analyzes progress of the services, including the phase or completion of events, invoices received and contracted costs. Significant judgments and estimates may be made in determining the prepaid or accrued balances at the end of any reporting period. Actual results could

differ from the Company’s estimates. At September 30, 2021, the Company’s clinical trial accrual balance of $0.8 million is included in accrued liabilities.

Fair Value Measurements

The accounting guidance defines fair value, establishes a consistent framework for measuring fair value and expands disclosure for each major asset and liability category measured at fair value on either a recurring or non-recurring basis. Fair value is defined as an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, the accounting guidance establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows:

Level 1: Observable inputs such as quoted prices in active markets.

Level 2: Inputs, other than the quoted prices in active markets that are observable either directly or indirectly.

Level 3: Unobservable inputs in which there is little or no market data, which require the reporting entity to develop its own assumptions.

The carrying amounts of the Company’s current financial assets and liabilities are considered to be representative of their respective fair values because of the short-term nature of those instruments. The Company has no current financial assets or liabilities measured at fair value on a recurring basis and no transfers between levels have occurred during the periods presented.

Revenue Recognition

The Company generates revenue from certain grant awards or a subaward (the “Grant Awards”) (see Note 4), which provide the Company with payments in return for certain research and development activities over a contractually defined period. Revenue from such Grant Awards is recognized in the period during which the related qualifying services are rendered and costs are incurred, provided that the applicable conditions under the subaward agreement have been met.

The Grant Awards are on a best-effort basis and do not require scientific achievement as a performance obligation. The Grant Awards are non-refundable. The costs associated with the Grant Awards are expensed as incurred and reflected as a component of research and development expense in the accompanying condensed consolidated statements of operations.

Funds received from the Grant Awards are recorded as revenue as the Company is the principal participant in the arrangement because the activities under the Grant Awards are part of the Company’s development programs. In those instances where the Company first receives consideration in advance of providing underlying services, the Company classifies such consideration as deferred revenue until (or as) the Company provides the underlying services. In those instances where the Company first provides the underlying services prior to its receipt of consideration, the Company records a grant receivable.

Stock-Based Compensation

Stock-based compensation expense represents the fair value of equity awards, on the grant date, recognized in the period using the Black-Scholes option pricing model. The Company recognizes expense for awards with graded vesting schedules over the requisite service period of the awards (usually the vesting period) on a straight-line basis. For equity awards for which vesting is subject to performance-based milestones, the expense is recorded over the remaining service period after the point when the achievement of the milestone is deemed probable. The Company recognizes forfeitures for all awards as such forfeitures occur.

Income Taxes

The Company accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, deferred tax assets and liabilities are determined on the basis of the differences between the financial statements and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date.

The Company recognizes net deferred tax assets to the extent that the Company believes these assets are more likely than not to be realized. In making such a determination, management considers all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. If management determines that the Company would be able to realize its deferred tax assets in the future in excess of their

net recorded amount, management would make an adjustment to the deferred tax asset valuation allowance, which would reduce the provision for income taxes.

Segment Reporting

Operating segments are identified as components of an enterprise about which separate discrete financial information is available for evaluation by the chief operating decision-maker in making decisions regarding resource allocation and assessing performance. The Company views its operations and manages its business in one operating segment in the United States.

Net Loss Per Share

Basic net loss per share is computed by dividing the net loss by the weighted-average number of common shares outstanding for the period, without consideration for potentially dilutive securities and adjusted for the weighted-average number of common shares outstanding that are subject to repurchase. The Company has excluded weighted-average shares subject to repurchase of 5,000 shares and 23,000 shares from the weighted-average number of common shares outstanding for the three months ended September 30, 2021 and 2020, respectively. The Company has excluded weighted-average shares subject to repurchase of 9,000 shares and 27,000 shares from the weighted-average number of common shares outstanding for the nine months ended September 30, 2021 and 2020, respectively. Diluted net loss per share is computed by dividing the net loss by the weighted-average number of shares of common stock and dilutive common stock equivalents outstanding for the period determined using the treasury-stock and if-converted methods. For all periods presented, there is no difference in the number of shares used to calculate basic and diluted shares outstanding as inclusion of the potentially dilutive securities would be antidilutive.

Potentially dilutive securities not included in the calculation of diluted net loss per share, because to do so would be anti-dilutive, are as follows (in common stock equivalent shares; in thousands):

	September 30,
	2021		2020
Warrants to purchase common stock		4,235		3,521
Common stock options		6,019		2,341
Common stock subject to repurchase		4		20
		10,258		5,882

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Balance Sheet Details

9 Months Ended

Sep. 30, 2021

Payables And Accruals [Abstract]

Balance Sheet Details

2. Balance Sheet Details

Accrued liabilities consist of the following (in thousands):

	September 30,		December 31,
	2021		2020
Research and development	$	310	$	412
Clinical trials		844		980
Legal fees		194		77
Compensation		1,446		1,528
Other		3		45
	$	2,797	$	3,042

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Commitments, Contingencies and Related Party Transactions

9 Months Ended

Sep. 30, 2021

Commitments And Contingencies Disclosure [Abstract]

Commitments, Contingencies and Related Party Transactions

3. Commitments, Contingencies and Related Party Transactions

Lease Liability

Rent expense was $46,000 and $41,000 for the three months ended September 30, 2021 and 2020. Rent expense was $133,000 and $124,000 for the nine months ended September 30, 2021 and 2020, respectively.

On May 22, 2019, the Company entered into a sublease agreement for office space of 4,677 square feet in San Diego, California which expired on March 31, 2021. On March 17, 2021, the Company entered into a lease directly with the landlord for the same facility (the “San Diego Lease”) which expires on May 31, 2022. Base rent under the San Diego Lease is approximately $184,000 annually and the monthly rent expense is being recognized on a straight-line basis over the term of the lease.

The San Diego Lease is included in the accompanying condensed consolidated balance sheet at the present value of the lease payments. As the San Diego Lease does not have an implicit interest rate, the present value reflects a 10.0% discount rate which is the estimated rate of interest that the Company would have to pay in order to borrow an amount equal to the lease payments on a collateralized basis over a similar term and in a similar economic environment. The Company recognized a net operating lease right-of-use asset and an aggregate lease liability of $119,000 as of September 30, 2021. The weighted average remaining lease term was 0.7 years.

Maturities of the lease liability due under this lease agreement as of September 30, 2021, are as follows (in thousands):

Maturity of lease liability	Operating Lease
2021	$	45
2022		77
Total lease payments		122
Less imputed interest		(3	)
Lease liability	$	119

Related Party Transactions 

In January 2019, the Company engaged Newfront Insurance as its primary insurance broker. The son of Richard Vincent, the Company’s Chief Financial Officer, is the Company’s agent at Newfront Insurance. During the nine months ended September 30, 2021 and 2020, the Company paid insurance premiums of approximately $1.8 million and $1.4 million, for which the son earned commission of $79,000 and $57,000, respectively.

Effective in September 2019, the Company and Shanghai Pharmaceutical (USA) Inc. (“SPH USA”), the Company’s largest stockholder and an affiliate of two of the Company’s directors entered into a Materials and Supply and Services Agreement (“SPH USA Services Agreement”). Pursuant to the SPH USA Services Agreement, the Company and SPH USA have executed and expect to continue to execute various statements of work for the transfer to SPH USA of key reagents and other materials, and for the supply of certain services by the Company to SPH USA, as contemplated under and in furtherance of a license and distribution agreement between the parties (see Note 4). The Company recorded amounts receivable from SPH USA related to statements of work totaling $0.2 million and $0.3 million as of September 30, 2021 and December 31, 2020, respectively. The Company has an agreement with SPH USA for certain rights to the greater China area (see Note 4).

In connection with the securities purchase agreements and underwritten offerings described in Note 5, other investors included individuals or entities affiliated with David F. Hale, SPH USA, Daniel L. Kisner, Hazel M. Aker, and Michael G. Carter.

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License, Collaboration and Grant Award/ Subaward Agreements

9 Months Ended

Sep. 30, 2021

Organization Consolidation And Presentation Of Financial Statements [Abstract]

License, Collaboration and Grant/ Subaward Agreements

4. License, Collaboration and Grant Award/Subaward Agreements

Georgetown University (“Georgetown”)

In March 2014, the Company entered into an Exclusive License Agreement (the “Georgetown License Agreement”) with Georgetown, pursuant to which the Company: (i) licensed the exclusive worldwide right to patents and technologies for the development and commercialization of certain product candidates targeting tumorigenic EWS-FLI1 fusion proteins as an anti-tumor therapy for therapeutic, diagnostics, or research tool purposes, (ii) is solely responsible for all development and commercialization activities and costs, and (iii) is responsible for all costs related to the filing, prosecution and maintenance of the licensed patent rights.

Under the terms of the Georgetown License Agreement, commencing in 2015, the Company: (i) shall pay and has paid an annual license maintenance fee of $10,000 until the first commercial sale occurs, (ii) is required to make up to $0.2 million in aggregate milestone payments upon the achievement of certain regulatory milestones, and (iii) will be required to pay low single digit royalties based on annual net product sales. The Company accounted for the licensed technology as an asset acquisition because it did not meet the definition of a business. All milestone payments under the Georgetown License Agreement will be recognized as research and development expense upon completion of the required events, as the triggering events are not considered to be probable until they are achieved. As of September 30, 2021, the Company had not triggered or made any milestone payments under the Georgetown License Agreement.

The Georgetown License Agreement may be terminated by either party upon material breach or may be terminated by the Company as to one or more countries with 90 days written notice of termination. The term of the Georgetown License Agreement will continue until the expiration of the last valid claim within the patent rights covering the product. Georgetown may terminate the agreement in the event: (i) the Company fails to pay any amount and fails to cure such failure within 30 days after receipt of notice, (ii) the Company defaults in its obligation to obtain and maintain insurance and fails to remedy such breach within 60 days after receipt of notice, or (iii) the Company declares insolvency or bankruptcy. The Company may terminate the Georgetown License Agreement at any time upon at least 60 days’ written notice.

The University of Texas MD Anderson Cancer Center (“MD Anderson”)

In December 2014, the Company entered into a collaboration agreement (as amended, the “Collaboration”) with MD Anderson, which provides for the conduct of preclinical and clinical research for ONCT-216 in exchange for certain program payments. If MD Anderson successfully completes all the requirements of the Collaboration in full and the program is successfully commercialized, the Company will be required to pay aggregate milestone payments of $1.0 million based on net product sales. In July 2020 and September 2021, the Company entered into two research agreements with MD Anderson for certain services up to an aggregate cost of $820,000. The Company recorded research and development expense of none and $0.1 million for the three and nine months ended September 30, 2021 and $0.2 million for the three and nine months ended September 30, 2020.

Agreements with the Regents of the University of California (the “Regents”)

In March 2016, and as amended and restated in August 2018, and as amended in March and May 2019, the Company entered into a license agreement (as amended, the “Regents License Agreement”) for the development, manufacturing and distribution rights related to the development and commercialization of ROR1 related naked antibodies, antibody fragments or synthetic antibodies, and genetically engineered cellular therapies. The Regents License Agreement provides for the following: (i) in May 2016, an upfront license fee of $0.5 million was paid and 107,108 shares of common stock were issued, (ii) $25,000 in annual license maintenance fees commencing in 2017, (iii) reimbursement of certain annual patent costs, (iv) certain development and regulatory milestones aggregating from $10.0 million to $12.5 million, on a per product basis, (v) certain worldwide sales milestones based on achievement of tiered revenue levels aggregating $75.0 million, (vi) low single-digit royalties, including potential future minimum annual royalties, on net sales of each target, and (vii) minimum diligence to advance licensed assets consisting of at least $1.0 million in development spend annually through 2021. Under the Regents License Agreement, the Company recorded: (i) none and $25,000 in license maintenance fees as research and development expense for the three and nine months ended September 30, 2021 and $25,000 for the three and nine months ended September 30, 2020, and (ii) a $0.1 million  in patent costs as general and administrative expense for the three months ended September 30, 2021 and 2020, respectively, and $0.3 million and $0.1 million for nine months ended September 30, 2021 and 2020, respectively. As of September 30, 2021, the Company believes it has met its obligations under the Regents License Agreement.

In July 2016, and as modified by the amended and restated Regents License Agreement in August 2018, the Company entered into a Research Agreement (the “Research Agreement”) with the Regents for further research on a ROR1 therapeutic development program. Under this five-year agreement, the Regents will have an aggregate budget of $3.6 million, with $125,000 payable quarterly. The Company recorded none and $0.1 million in research and development expense under this agreement for each of the three months ended September 30, 2021 and 2020, and $0.3 million and $0.4 million for each of the nine months ended September 30, 2021 and 2020, respectively. Such costs are includable as part of the Company’s annual diligence obligations under the Regents License Agreement. The Regents License Agreement will expire upon the later of the expiration date of the longest-lived patent rights or the fifteenth anniversary of the first commercial sale of a licensed product.

The Regents may terminate the Regents License Agreement if: (i) a material breach by the Company is not cured within a reasonable time, (ii) the Company files a claim asserting the Regents licensed patent rights are invalid or unenforceable and (iii) the Company files for bankruptcy. The Company may terminate the agreement at any time upon at least 60 days’ written notice.

The University of Tennessee Research Foundation (“UTRF”)

In March 2015, and as amended, the Company and UTRF entered into a license agreement (the “SARD License Agreement”) pursuant to which the Company was granted exclusive worldwide rights in all existing SARD technologies owned or controlled by UTRF, including all improvements thereto. The SARD program is now known as the dual action androgen receptor inhibitor, or DAARI program. Under the SARD License Agreement, the Company is obligated to employ active, diligent efforts to conduct preclinical research and development activities for the DAARI program to advance one or more lead compounds into clinical development.  The Company is also obligated to pay UTRF annual license maintenance fees, low single-digit royalties on net sales of products and additional royalties on sublicense revenues, depending on the state of development of a clinical product candidate at the time it is sublicensed. The Company recorded research and development expense under this agreement that were nominal and $0.1 million for each of the three months ended September 30, 2021 and 2020, respectively, and $0.1 million and $0.2 million for each of

the nine months ended September 30, 2021 and 2020, respectively. As of September 30, 2021, the Company believes it has met its obligations under the SARD License Agreement. See Note 7.

The California Institute for Regenerative Medicine (“CIRM”) Award

In August 2017, and as amended and restated in December 2020, CIRM awarded an $18.3 million grant to researchers at UC San Diego to advance the Company’s Phase 1/2 clinical trial evaluating zilovertamab in combination with ibrutinib for the treatment of patients with B-cell lymphoid malignancies, including mantle cell lymphoma (“MCL”), and chronic lymphocytic leukemia (“CLL”). This study is known as CIRM-0001, or Cirmtuzumab and Ibrutinib for Relapsed Lymphoma or Leukemia (the “CIRLL study”). The Company: (i) is conducting this study in collaboration with UC San Diego, (ii) estimates it will receive approximately $14.0 million in development milestones under research subaward agreements during the award project period, estimated to be from October 1, 2017 to March 31, 2022, (iii) is committed to certain co-funding requirements, (iv) received subaward payments of none for the three months ended September 30, 2021 and 2020, and $2.2 million and $1.4 million for the nine months ended September 30, 2021 and 2020, respectively, and (v) is required to provide UC San Diego progress and financial update reports throughout the award period. The subaward does not bear a royalty payment commitment, nor is the subaward otherwise refundable. For the three months ended September 30, 2021 and 2020, the Company recorded revenue of $2.1 million and $0.6 million, respectively, and recorded revenue of $3.7 million and $1.8 million for the nine months ended September 30, 2021 and 2020, respectively. Related qualifying subaward costs for the three months ended September 30, 2021 and 2020 were $4.2 million and $1.3 million, respectively, and $7.5 million and $4.1 million for the nine months ended September 30, 2021 and 2020, respectively. At September 30, 2021, and December 31, 2020, the Company had deferred grant revenue of $0.2 million and $1.6 million, respectively. As of September 30, 2021, the Company believes it has met its obligations under the CIRM award and UC San Diego subawards.

The National Institute of Health (“NIH”) Grant Awards

In August 2021, the NIH awarded the Company two research and development grants for up to $2.2 million to support pre-clinical activities for the Company’s ONCT-216 and ONCT-534 programs, including $0.7 million payable to subawardees. Under the terms of the grants, the Company is entitled to receive reimbursement in arrears of incurring allowable expenditures. The earned NIH funds are non-refundable and the Company is required to provide periodic progress performance reports. During the three and nine months ended September 30, 2021, the Company received no award payments from the NIH and recorded $50,000 in grant revenue and recorded an unbilled receivable in prepaid and other assets.

Clinical Trial and Supply Agreement

In April 2018, and as amended, the Company entered into a Clinical Trial and Supply Agreement with Pharmacyclics, LLC, an AbbVie Company, to supply ibrutinib for the CIRLL study. Such agreement does not bear any upfront costs, inventory purchase costs, milestone or royalty payment commitments or other financial obligations.

SPH USA, a Related Party

License and Development Agreement (“LDA”)

In November 2018, and as amended, the Company entered into the LDA with SPH USA for: (i) the territory of the People’s Republic of China, Hong Kong, Macau, and Taiwan (“Greater China”), and (ii) rights to manufacture, develop, market, distribute and sell all of the Company’s product candidates under the Georgetown License Agreement and the Regents License Agreement (exclusive to Greater China only). Under the LDA, SPH USA is solely responsible for: (a) all preclinical and clinical development activities required in order to obtain regulatory approval in Greater China for such product candidates, (b) any third-party license milestone or royalty payments owed under the Georgetown License Agreement and the Regents License Agreement, and (c) paying the Company a low single digit royalty on net sales in the territory.

The LDA will expire upon the expiration of the last royalty term for the last licensed product. The LDA may be terminated by: (i) SPH USA on a country by country or product by product basis with 180 days written notice, (ii) either party upon material breach that is not cured within 90 days, and (iii) either party in the event the other party declares insolvency or bankruptcy. There has been no significant activity under this agreement for each of the three and nine months ended September 30, 2021 and 2020. See Note 3.

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Stockholders' Equity

9 Months Ended

Sep. 30, 2021

Equity [Abstract]

Stockholders' Equity

5. Stockholders’ Equity

Securities Purchase Agreements and Underwritten Offering

In May 2020, the Company entered into a Securities Purchase Agreement (the “May Purchase Agreement”) with several institutional and individual investors for the concurrent sale of: (i) 1,943,636 shares of the Company’s common stock in a registered direct offering, resulting in net proceeds of $4.4 million, after deducting the placement agent’s cash commissions and other offering expenses, and excluding the proceeds, if any, from the exercise of the warrants, and (ii) unregistered warrants to purchase up to an aggregate of 971,818 shares of common stock. The combined purchase price for one share and one warrant to purchase half of a share of common stock was $2.5725. In addition, the Company issued warrants to purchase 116,618 shares of common stock at an exercise price of $3.2156 per share to the placement agent, H.C. Wainwright & Co., LLC (“Wainwright” or the “placement agent”) as part of its compensation, which warrants were immediately exercisable and expire on May 21, 2025. An investor participating in the transaction included an entity affiliated with David F. Hale, the chairman of the Company’s board of directors.

In July 2020, the Company entered into a Securities Purchase Agreement (the “July Purchase Agreement”) with several institutional and individual investors for the concurrent sale of: (i) 2,581,867 shares of the Company’s common stock in a registered direct offering, resulting in net proceeds of $5.7 million, after deducting the placement agent’s cash commissions and other offering expenses, and excluding the proceeds, if any, from the exercise of the warrants, and (ii) unregistered warrants to purchase up to an aggregate of 1,290,933 shares of common stock. The combined purchase price for one share and one warrant to purchase half of a share of common stock was $2.3825. The warrants issued to investors were, subject to certain ownership limitations, immediately exercisable at an exercise price equal to $2.32 per share and expire on January 21, 2026. In addition, the Company issued warrants to purchase 154,912 shares of common stock at an exercise price of $2.9781 per share to the placement agent as part of its compensation, which warrants were immediately exercisable upon issuance and terminate on July 21, 2025. Other investors participating in the July Purchase Agreement included an entity affiliated with SPH USA, the Company’s largest stockholder, Daniel L. Kisner, a member of the Company’s board of directors, and Hazel M. Aker, the Company’s then General Counsel.

In August 2020, the Company entered into an underwriting agreement (as amended and restated, the “August Underwriting Agreement”) with Wainwright for the sale of 2,428,886 shares of the Company’s common stock at a price to the public of $2.10 per share, resulting in net proceeds of $4.4 million, after deducting the underwriter’s discounts, commissions and other offering expenses.  In addition, the Company issued warrants to purchase 145,733 shares of common stock at an exercise price of $2.625 per share to Wainwright as part of its compensation, which warrants were immediately exercisable upon issuance and terminate on August 27, 2025. An investor participating in the transaction included Michael G. Carter, a member of the Company’s board of directors.

In November 2020, the Company entered into an underwriting agreement (as amended and restated, the “November Underwriting Agreement”) with Wainwright for the sale of 7,258,065 shares of the Company’s common stock at a price to the public of $3.10 per share, resulting in net proceeds of $20.4 million, after deducting the underwriter’s discounts, commissions and other offering expenses. In addition, the Company issued warrants to purchase 435,484 shares of common stock at an exercise price of $3.875 per share to Wainwright as part of its compensation, which warrants were immediately exercisable upon issuance and terminate on November 17, 2025.

In December 2020, the Company entered into an underwriting agreement (as amended and restated, the “December Underwriting Agreement”) with Wainwright for the sale of 19,161,667 shares of the Company’s common stock at a price to the public of $4.50 per share, resulting in net proceeds of $79.0 million, after deducting the underwriter’s discounts, commissions and other offering expenses In addition, the Company issued warrants to purchase 1,149,700 shares of common stock at an exercise price of $5.625 per share to Wainwright as part of its compensation, which warrants were immediately exercisable upon issuance and terminate on December 9, 2025.

Common Stock Warrants

A summary of warrant activity and changes in warrants outstanding is presented below:

	Number of Shares Underlying Warrants			Weighted-Average Exercise Price Per Share		Weighted-Average Remaining Contractual Term (in years)
Balance at December 31, 2020		5,031,841		$	9.25		4.40
Issued		—		$	—		—
Forfeited		—		$	—		—
Exercised		(796,931	)	$	2.56		4.10
Balance at September 30, 2021		4,234,910		$	10.50		3.57

As of September 30, 2021, all warrants met the criteria for classification in stockholders’ equity.

Equity Incentive Plans

Contemporaneous with the Merger closing: (i) Private Oncternal’s 2015 Equity Incentive Plan, as amended (the “2015 Plan”) was assumed by the Company, and (ii) the Company adopted the 2019 Incentive Award Plan (“2019 Plan”) under which the sum of: (a) 1,678,571 shares of common stock, (b)  up to 275,579 shares of common stock which were subject to outstanding awards under the GTx 2013 Equity Incentive Plan (the “2013 Plan”) as of June 7, 2019, that upon cancellation will become available for issuance under the 2019 Plan, and (c) an annual increase on the first day of each calendar year beginning January 1, 2020, and ending on and including January 1, 2029, equal to the lesser of (A) 5% of the aggregate number of shares of common stock outstanding on the final day of the immediately preceding calendar year and (B) such smaller number of shares of common stock as is determined by the Board, are reserved for issuance. At September 30, 2021, 1,521,432 shares remain available for future issuance under the 2019 Plan and Inducement Plan (as defined below).

					Weighted-
					Average
			Weighted-		Remaining
			Average		Contractual		Aggregate
	Number of		Exercise Price		Term		Intrinsic
	Shares		Per Share		(in years)		Value
Options outstanding		6,019,412	$	5.37		8.83	$	1,732,115
Options vested and expected to vest		6,019,412	$	5.37		8.83	$	1,732,115
Options exercisable		1,300,174	$	3.79		6.89	$	1,365,004

As of September 30, 2021, all 275,579 stock options previously outstanding under the 2013 Plan were cancelled and added to the 2019 Plan. At September 30, 2021, all former GTx stock option plans were terminated and there are no remaining outstanding stock options.

In July 2015, Private Oncternal adopted the 2015 Plan which provided for the issuance of up to 631,120 shares of common stock for incentive stock options, non-statutory stock options, restricted stock awards, restricted stock unit awards and other stock awards to its employees, members of its board of directors and consultants.  In general, the options issued under the 2015 Plan expire ten years from the date of grant and vest over a four-year period. Certain grants vest based on the achievement of development or regulatory milestones. No further awards will be made under the 2015 Plan, which was terminated as to new grants in June 2019.

The 2019 Plan provides for the issuance of shares of common stock for incentive stock options, non-statutory stock options, restricted stock awards, restricted stock unit awards and other stock awards to its employees, members of its board of directors and consultants.  In general, the stock options issued under the 2019 Plan expire ten years from the date of grant and vest over a four-year period. Certain stock option grants vest based on the achievement of development or regulatory milestones. The 2019 Plan allows for the early exercise of all stock option grants if authorized by the board of directors at the time of grant.

On February 11, 2021, the Company’s board of directors adopted the 2021 Employment Inducement Incentive Award Plan (the “Inducement Plan”). The Inducement Plan is a non-shareholder approved stock plan adopted pursuant to the “inducement exception” provided under Nasdaq listing rules. The Inducement Plan is used exclusively for the issuance of non-statutory stock options to certain new hires who satisfied the requirements to be granted inducement grants under Nasdaq rules as an inducement material to the individual’s entry into employment with the Company. The terms of the Inducement Plan are substantially similar to the terms of our 2019 Plan.  As amended on May 25, 2021, the Company has reserved 2,050,000 shares of common stock under the Inducement Plan.

A summary of the Company’s stock option activity under the 2019 Plan, Inducement Plan and 2015 Plan is as follows:

				Weighted-
	Number of			Average
	Options			Exercise Price
Balance at December 31, 2020		2,107,625		$	4.08
Granted		4,396,700		$	5.98
Cancelled		(378,750	)	$	5.66
Exercised		(106,163	)	$	3.89
Balance at September 30, 2021		6,019,412		$	5.37

For the nine months ended September 30, 2021 and 2020, the weighted average grant date fair value per share of option grants was $4.48 per share and $2.40 per share, respectively.  For the nine months ended September 30, 2021 and 2020, the aggregate intrinsic value of stock options exercised was $3.89 per share and $2.03 per share, respectively. The intrinsic value is calculated as the difference between the fair value of the Company’s common stock at the time of the option exercise and the exercise price of that stock option.

Stock-Based Compensation Expense

The weighted-average assumptions used in the Black-Scholes option pricing model to determine the fair value of stock option grants, were as follows:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2021			2020			2021			2020
Risk-free interest rate		1.0	%		0.7	%		0.8	%		0.8	%
Expected volatility		100.3	%		98.6	%		91.8	%		92.2	%
Expected term (in years)		6.0			10.0			6.2			6.6
Expected dividend yield		—	%		—	%		—	%		—	%

Expected volatility. Due to the lack of an adequate history of: (i) a public market for the trading of the Company’s common stock, and (ii) specific historical and implied volatility data, the Company has based its estimate of the historical volatility from a group of similar companies that are publicly traded. For these analyses, the Company has selected companies with comparable characteristics to it including enterprise value, risk profiles, position within the industry, and with historical share price information sufficient to meet the expected life of the stock-based awards. The Company computes the historical volatility data using the daily closing prices for the selected companies’ shares during the equivalent period of the calculated expected term of our stock-based awards. The Company will continue to apply this process until a sufficient amount of historical information regarding the volatility of its own stock price becomes available.

Expected term. The expected term represents the period of time that options are expected to be outstanding. Because the Company does not have historical exercise behavior, it determined the expected life assumption using the simplified method for employees, which is an average of the contractual term of the option and its vesting period. The expected term for nonemployee options is generally the remaining contractual term.

Risk-free interest rate. The risk-free interest rate is based on the implied yield on the U.S. Treasury securities with a maturity date similar to the expected term of the associated stock option award.

Expected dividend yield. The Company bases the expected dividend yield assumption on the fact that it has never paid cash dividends and has no present intention to pay cash dividends and, therefore, used an expected dividend yield of zero.

Stock-based compensation expense recognized for all equity awards has been reported in the condensed consolidated statements of operations as follows (in thousands):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2021		2020		2021		2020
Research and development	$	920	$	129	$	2,097	$	398
General and administrative		568		278		2,065		751
	$	1,488	$	407	$	4,162	$	1,149

As of September 30, 2021, the total compensation cost related to non-vested awards not yet recognized was $17.7 million and the weighted-average period over which it is expected to be recognized was 3.2 years.

Common Stock Reserved for Future Issuance

Common stock reserved for future issuance is as follows (in thousands):

	September 30, 2021
Common stock warrants		4,235
Common stock options issued and outstanding		6,019
Common stock available for issuance under the Inducement Plan and 2019 Plan		1,522
		11,776

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COVID-19 Pandemic and CARES Act

9 Months Ended

Sep. 30, 2021

C O V I D19 Pandemic And C A R E S Act [Abstract]

COVID-19 Pandemic and CARES Act

6. COVID-19 Pandemic and CARES Act

The current COVID-19 pandemic has presented substantial public health and economic challenges and is affecting economies, financial markets and business operations around the world. While the Company is currently continuing the clinical trials it has underway in sites across the U.S., COVID-19 precautions have directly or indirectly impacted the timeline for some of its clinical trials. Additionally, the Company’s expectations for the timing of first-in-human dosing of ONCT-808 has been delayed. The Company considered the impacts of COVID-19 on the assumptions and estimates used to prepare its condensed consolidated financial statements and determined that there were no material adverse impacts on the Company’s results of operations and financial position at September 30, 2021. The full extent to which the COVID-19 pandemic will continue to directly or indirectly impact the Company’s business results of operations and financial condition, will depend on future development that are highly uncertain, including as a result of new information that may emerge concerning COVID-19 and the actions taken to contain or treat it, the success or failure of ongoing vaccination programs worldwide, the emergence and spread of additional variants of COVID-19, as well as the economic impact on local, regional, national and international markets. 

In response to the COVID-19 pandemic, the CARES Act was signed into law on March 27, 2020.  The CARES Act, among other things, includes tax provisions relating to refundable payroll tax credits, deferment of employer’s social security payments, net operating loss utilization and carryback periods, modifications to the net interest deduction limitations and technical corrections to tax depreciation methods for qualified improvement property, and authorized the Paycheck Protection Program. The CARES Act had no material impact on the Company’s income tax provision for the nine months ended September 30, 2021.  The Company continues to monitor changes and revisions to the CARES Act and its impact on the Company’s condensed consolidated financial position, results of operations and cash flows.

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Subsequent Event

9 Months Ended

Sep. 30, 2021

Subsequent Events [Abstract]

Subsequent Event

7. Subsequent Event

In connection with the Merger, the Company, a representative of holders of the contingent value rights (“CVRs”), and Computershare, Inc. as rights agent, entered into a Contingent Value Rights Agreement (the “CVR Agreement”) pursuant to which the Company’s stockholders of record as of immediately prior to the Merger received one CVR for each share of the Company’s common stock held immediately prior to the Merger. The CVR Agreement was amended on November 1, 2021. As amended, the CVR Agreement entitles holders of CVRs to receive: (i) 50% of certain net proceeds received by the Company during the 15-year period after the closing of the Merger (the “CVR Term”) from a transaction, if any, resulting in the grant, sale, or transfer of DAARI technology to a third party that occurs during the 10-year period after the closing of the Merger (or in the 11th year if based on a term sheet approved during the initial 10-year period); and (b) 5% of net sales of products by Parent or its affiliates during the CVR Term incorporating the DAARI technology. As of September 30, 2021, no transactions or net sales relating to the DAARI technology had occurred.

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Description of Business, Basis of Presentation and Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2021

Accounting Policies [Abstract]

Merger

Merger

On June 7, 2019, the Company, then operating as GTx, Inc. (“GTx”), completed the merger contemplated by its Agreement and Plan of Merger and Reorganization, as amended (the “Merger Agreement”), with privately-held Oncternal Therapeutics, Inc. (“Private Oncternal”) and Grizzly Merger Sub, Inc., a wholly-owned subsidiary of the Company (“Merger Sub”), dated March 6, 2019. Under the Merger Agreement, Merger Sub merged with and into Private Oncternal, with Private Oncternal surviving as a wholly-owned subsidiary of the Company (the “Merger”). GTx changed its name to Oncternal Therapeutics, Inc., and Private Oncternal, which remains a wholly-owned subsidiary of the Company, changed its name to Oncternal Oncology, Inc. On June 10, 2019, the Company’s common stock began trading on The Nasdaq Capital Market under the ticker symbol “ONCT.”

Except as otherwise indicated, references herein to “Oncternal,” and “the Company,” refer to Oncternal Therapeutics, Inc. on a post-Merger basis, and the term “Private Oncternal” refers to the business of privately-held Oncternal Therapeutics, Inc., prior to completion of the Merger.  References to GTx refer to GTx, Inc. prior to completion of the Merger.

Principles of Consolidation

Principles of Consolidation

The condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries, Oncternal Oncology, Inc. and Oncternal, Inc. All intercompany accounts and transactions have been eliminated in the preparation of the condensed consolidated financial statements.

Liquidity and Going Concern

Liquidity and Going Concern

The Company follows Accounting Standards Codification (“ASC”) Topic 205-40, Presentation of Financial Statements—Going Concern, which requires that management evaluate whether there are relevant conditions and events that in the aggregate raise substantial doubt about the entity’s ability to continue as a going concern and to meet its obligations as they become due within one year after the date that the financial statements are issued.

The condensed consolidated financial statements have been prepared assuming the Company will continue as a going concern, which contemplates the realization of assets and the satisfaction of liabilities in the normal course of business.  As of September 30, 2021, the Company had $97.4 million in cash and cash equivalents. The Company believes it has sufficient cash to fund its projected operating requirements for at least twelve months from the filing date of this Quarterly Report.

From inception, the Company has devoted substantially all of its efforts to drug discovery and development and conducting preclinical studies and clinical trials. The Company has a limited operating history and the sales and income potential of the Company’s business and market are unproven. Successful transition to attaining profitable operations is dependent upon achieving a level of revenues adequate to support the Company’s cost structure.  The Company has experienced net losses and negative cash flows from operating activities since its inception and has an accumulated deficit of $106.1 million as of September 30, 2021. The Company expects to continue to incur net losses for the foreseeable future and believes it will need to raise substantial additional capital to accomplish its business plan over the next several years. The Company plans to continue to fund its losses from operations and capital funding needs through a combination of equity offerings, debt financings or other sources, including potential collaborations, licenses and other similar arrangements. If the Company is unable to secure adequate additional funding, the Company may be forced to make reductions in spending, extend payment terms with suppliers, liquidate assets where possible, or suspend or curtail planned programs.

Any of these actions could materially harm the Company’s business, results of operations and future prospects. There can be no assurance as to the availability or terms upon which such financing and capital might be available in the future. 

Basis of Presentation

Basis of Presentation

The accompanying interim condensed financial statements are unaudited.  The unaudited condensed consolidated financial statements have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission (“SEC”) and with generally accepted accounting principles in the United States of America (“GAAP”). These unaudited condensed consolidated financial statements have been prepared on the same basis as the audited, consolidated financial statements and include all adjustments, consisting of only normal recurring accruals, which in the opinion of management are necessary to present fairly the Company’s financial position as of the interim date and results of operations for the interim periods presented. The preparation of financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of expenses during the reporting period. Actual results could differ materially from those estimates. These unaudited condensed consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements for the year ended December 31, 2020, filed with the SEC on its Annual Report on Form 10-K/A on March 12, 2021. The results presented in these unaudited condensed consolidated financial statements are not necessarily indicative of the results expected for the full fiscal year or any other interim period or any future year or period.

Use of Estimates

Use of Estimates

The Company’s condensed consolidated financial statements are prepared in accordance with GAAP. The preparation of the Company’s condensed consolidated financial statements and accompanying notes requires it to make estimates and assumptions that impact the reported amounts of assets, liabilities, revenues and expenses and the disclosure of contingent assets and liabilities. Significant estimates consist of those used to determine the fair value of the Company’s stock-based awards and those used to determine grant revenue and accruals for research and development costs. Although these estimates are based on the Company’s knowledge of current events and actions it may undertake in the future, actual results may ultimately materially differ from these estimates and assumptions.

Cash and Cash Equivalents

Cash and Cash Equivalents

The Company considers all highly liquid investments with maturities of three months or less when purchased to be cash equivalents. Cash and cash equivalents include cash in readily available checking accounts and money market accounts.

Concentration of Credit Risk

Concentration of Credit Risk

Financial instruments that potentially subject the Company to significant concentrations of credit risk consist primarily of cash and cash equivalents. The Company maintains deposits in federally insured financial institutions in excess of federally insured limits. The Company has not experienced any losses in such accounts and believes it is not exposed to significant risk on its cash balances due to the financial position of the depository institution in which those deposits are held. Additionally, the Company established guidelines regarding approved investments and maturities of investments, which are designed to maintain safety and liquidity.

Patent Costs

Patent Costs

Costs related to filing and pursuing patent applications are recorded as general and administrative expense and expensed as incurred since recoverability of such expenditures is uncertain.

Research and Development Expenses and Accruals

Research and Development Expenses and Accruals

Research and development expenses consist of costs incurred for the Company’s own and for sponsored and collaborative research and development activities. Research and development costs are expensed as incurred and include manufacturing process development costs, manufacturing costs, costs associated with preclinical studies and clinical trials, regulatory and medical affairs activities, quality assurance activities, salaries and benefits, including stock-based compensation, fees paid to third-party consultants, license fees and overhead.

The Company has entered into various research and development contracts with research institutions, clinical research organizations, clinical manufacturing organizations and other companies. Payments for these activities are based on the terms of the individual agreements, which may differ from the pattern of costs incurred, and payments made in advance of performance are reflected in the accompanying consolidated balance sheets as prepaid expenses and other assets or accrued liabilities. The Company records accruals for estimated costs incurred for ongoing research and development activities and all clinical trial expenses are included in research and development expenses. When evaluating the adequacy of the accrued liabilities, the Company analyzes progress of the services, including the phase or completion of events, invoices received and contracted costs. Significant judgments and estimates may be made in determining the prepaid or accrued balances at the end of any reporting period. Actual results could

differ from the Company’s estimates. At September 30, 2021, the Company’s clinical trial accrual balance of $0.8 million is included in accrued liabilities.

Fair Value Measurements

Fair Value Measurements

The accounting guidance defines fair value, establishes a consistent framework for measuring fair value and expands disclosure for each major asset and liability category measured at fair value on either a recurring or non-recurring basis. Fair value is defined as an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, the accounting guidance establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows:

Level 1: Observable inputs such as quoted prices in active markets.

Level 2: Inputs, other than the quoted prices in active markets that are observable either directly or indirectly.

Level 3: Unobservable inputs in which there is little or no market data, which require the reporting entity to develop its own assumptions.

The carrying amounts of the Company’s current financial assets and liabilities are considered to be representative of their respective fair values because of the short-term nature of those instruments. The Company has no current financial assets or liabilities measured at fair value on a recurring basis and no transfers between levels have occurred during the periods presented.

Revenue Recognition

Revenue Recognition

The Company generates revenue from certain grant awards or a subaward (the “Grant Awards”) (see Note 4), which provide the Company with payments in return for certain research and development activities over a contractually defined period. Revenue from such Grant Awards is recognized in the period during which the related qualifying services are rendered and costs are incurred, provided that the applicable conditions under the subaward agreement have been met.

The Grant Awards are on a best-effort basis and do not require scientific achievement as a performance obligation. The Grant Awards are non-refundable. The costs associated with the Grant Awards are expensed as incurred and reflected as a component of research and development expense in the accompanying condensed consolidated statements of operations.

Funds received from the Grant Awards are recorded as revenue as the Company is the principal participant in the arrangement because the activities under the Grant Awards are part of the Company’s development programs. In those instances where the Company first receives consideration in advance of providing underlying services, the Company classifies such consideration as deferred revenue until (or as) the Company provides the underlying services. In those instances where the Company first provides the underlying services prior to its receipt of consideration, the Company records a grant receivable.

Stock-Based Compensation

Stock-Based Compensation

Stock-based compensation expense represents the fair value of equity awards, on the grant date, recognized in the period using the Black-Scholes option pricing model. The Company recognizes expense for awards with graded vesting schedules over the requisite service period of the awards (usually the vesting period) on a straight-line basis. For equity awards for which vesting is subject to performance-based milestones, the expense is recorded over the remaining service period after the point when the achievement of the milestone is deemed probable. The Company recognizes forfeitures for all awards as such forfeitures occur.

Income Taxes

Income Taxes

The Company accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, deferred tax assets and liabilities are determined on the basis of the differences between the financial statements and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date.

The Company recognizes net deferred tax assets to the extent that the Company believes these assets are more likely than not to be realized. In making such a determination, management considers all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. If management determines that the Company would be able to realize its deferred tax assets in the future in excess of their

net recorded amount, management would make an adjustment to the deferred tax asset valuation allowance, which would reduce the provision for income taxes.

Segment Reporting

Segment Reporting

Operating segments are identified as components of an enterprise about which separate discrete financial information is available for evaluation by the chief operating decision-maker in making decisions regarding resource allocation and assessing performance. The Company views its operations and manages its business in one operating segment in the United States.

Net Loss Per Share

Net Loss Per Share

Basic net loss per share is computed by dividing the net loss by the weighted-average number of common shares outstanding for the period, without consideration for potentially dilutive securities and adjusted for the weighted-average number of common shares outstanding that are subject to repurchase. The Company has excluded weighted-average shares subject to repurchase of 5,000 shares and 23,000 shares from the weighted-average number of common shares outstanding for the three months ended September 30, 2021 and 2020, respectively. The Company has excluded weighted-average shares subject to repurchase of 9,000 shares and 27,000 shares from the weighted-average number of common shares outstanding for the nine months ended September 30, 2021 and 2020, respectively. Diluted net loss per share is computed by dividing the net loss by the weighted-average number of shares of common stock and dilutive common stock equivalents outstanding for the period determined using the treasury-stock and if-converted methods. For all periods presented, there is no difference in the number of shares used to calculate basic and diluted shares outstanding as inclusion of the potentially dilutive securities would be antidilutive.

Potentially dilutive securities not included in the calculation of diluted net loss per share, because to do so would be anti-dilutive, are as follows (in common stock equivalent shares; in thousands):

	September 30,
	2021		2020
Warrants to purchase common stock		4,235		3,521
Common stock options		6,019		2,341
Common stock subject to repurchase		4		20
		10,258		5,882

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Description of Business, Basis of Presentation and Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2021

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Schedule of Potentially Dilutive Securities Excluded from Calculation of Diluted Net Loss per Share Would Be Anti-dilutive

Potentially dilutive securities not included in the calculation of diluted net loss per share, because to do so would be anti-dilutive, are as follows (in common stock equivalent shares; in thousands):

	September 30,
	2021		2020
Warrants to purchase common stock		4,235		3,521
Common stock options		6,019		2,341
Common stock subject to repurchase		4		20
		10,258		5,882

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Balance Sheet Details (Tables)

9 Months Ended

Sep. 30, 2021

Payables And Accruals [Abstract]

Summary of Accrued Liabilities

Accrued liabilities consist of the following (in thousands):

	September 30,		December 31,
	2021		2020
Research and development	$	310	$	412
Clinical trials		844		980
Legal fees		194		77
Compensation		1,446		1,528
Other		3		45
	$	2,797	$	3,042

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Commitments, Contingencies and Related Party Transactions (Tables)

9 Months Ended

Sep. 30, 2021

Commitments And Contingencies Disclosure [Abstract]

Summary of Maturities of Lease Liabilities

Maturities of the lease liability due under this lease agreement as of September 30, 2021, are as follows (in thousands):

Maturity of lease liability	Operating Lease
2021	$	45
2022		77
Total lease payments		122
Less imputed interest		(3	)
Lease liability	$	119

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Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2021

Summary Of Warrant Activity And Changes In Warrants Outstanding

A summary of warrant activity and changes in warrants outstanding is presented below:

	Number of Shares Underlying Warrants			Weighted-Average Exercise Price Per Share		Weighted-Average Remaining Contractual Term (in years)
Balance at December 31, 2020		5,031,841		$	9.25		4.40
Issued		—		$	—		—
Forfeited		—		$	—		—
Exercised		(796,931	)	$	2.56		4.10
Balance at September 30, 2021		4,234,910		$	10.50		3.57

Summary of Stock Option Outstanding, Vested and Expected to Vest and Exercisable

					Weighted-
					Average
			Weighted-		Remaining
			Average		Contractual		Aggregate
	Number of		Exercise Price		Term		Intrinsic
	Shares		Per Share		(in years)		Value
Options outstanding		6,019,412	$	5.37		8.83	$	1,732,115
Options vested and expected to vest		6,019,412	$	5.37		8.83	$	1,732,115
Options exercisable		1,300,174	$	3.79		6.89	$	1,365,004

Summary of Stock Option Activity

A summary of the Company’s stock option activity under the 2019 Plan, Inducement Plan and 2015 Plan is as follows:

				Weighted-
	Number of			Average
	Options			Exercise Price
Balance at December 31, 2020		2,107,625		$	4.08
Granted		4,396,700		$	5.98
Cancelled		(378,750	)	$	5.66
Exercised		(106,163	)	$	3.89
Balance at September 30, 2021		6,019,412		$	5.37

Summary of Share-Based Compensation Expense

Stock-based compensation expense recognized for all equity awards has been reported in the condensed consolidated statements of operations as follows (in thousands):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2021		2020		2021		2020
Research and development	$	920	$	129	$	2,097	$	398
General and administrative		568		278		2,065		751
	$	1,488	$	407	$	4,162	$	1,149

Common Stock Reserved for Future Issuance

Common stock reserved for future issuance is as follows (in thousands):

	September 30, 2021
Common stock warrants		4,235
Common stock options issued and outstanding		6,019
Common stock available for issuance under the Inducement Plan and 2019 Plan		1,522
		11,776

Stock Option Grants

Schedule of Assumptions Used to Determine Fair Value

The weighted-average assumptions used in the Black-Scholes option pricing model to determine the fair value of stock option grants, were as follows:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2021			2020			2021			2020
Risk-free interest rate		1.0	%		0.7	%		0.8	%		0.8	%
Expected volatility		100.3	%		98.6	%		91.8	%		92.2	%
Expected term (in years)		6.0			10.0			6.2			6.6
Expected dividend yield		—	%		—	%		—	%		—	%

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Description of Business, Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($) shares	Sep. 30, 2020 shares	Sep. 30, 2021 USD ($) segment shares	Sep. 30, 2020 shares	Dec. 31, 2020 USD ($)
Accounting Policies [Abstract]
Accumulated deficit	$ (106,057)		$ (106,057)		$ (82,797)
Cash and cash equivalents	97,380		97,380		116,737
Accrued Clinical Trials	844		844		980
Deferred grant revenue	$ 158		$ 158		$ 1,633
Number of operating segments | segment			1
Weighted-average shares subject to repurchase | shares	5,000	23,000	9,000	27,000

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Description of Business, Basis of Presentation and Summary of Significant Accounting Policies - Schedule of Potentially Dilutive Securities Excluded from Calculation of Diluted Net Loss per Share Would Be Anti-dilutive (Detail) - shares	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities	10,258,000	5,882,000
Warrants to purchase common stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities	4,235,000	3,521,000
Stock Option Grants
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities	6,019,000	2,341,000
Common Stock Subject to Repurchase
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities	4,000	20,000

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Balance Sheet Details - Accrued Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Payables And Accruals [Abstract]
Research and development	$ 310	$ 412
Accrued Clinical Trials	844	980
Legal fees	194	77
Compensation	1,446	1,528
Other	3	45
Total accrued liabilities	$ 2,797	$ 3,042

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Commitments, Contingencies and Related Party Transactions - Additional Information (Details)		1 Months Ended	3 Months Ended		9 Months Ended
	Mar. 17, 2021 USD ($)	May 22, 2019 USD ($) ft²	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Commitments And Contingencies [Line Items]
Insurance premiums					$ 1,800,000	$ 1,400,000
Agent
Commitments And Contingencies [Line Items]
Insurance commissions					79,000	57,000
Shanghai Pharmaceutical (USA) Inc.
Commitments And Contingencies [Line Items]
Amounts receivable			$ 200,000		200,000		$ 300,000
San Diego, California | Office Space
Commitments And Contingencies [Line Items]
Rent expense			$ 46,000	$ 41,000	$ 133,000	$ 124,000
Rentable area | ft²		4,677
Lease expiration date	May 31, 2022	Mar. 31, 2021
Annual base rent	$ 184,000	$ 184,000
Lease discount rate			10.00%		10.00%
Operating lease liability			$ 119,000		$ 119,000
Weighted average remaining lease term			8 months 12 days		8 months 12 days

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Commitments, Contingencies and Related Party Transactions - Summary of Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Operating Lease Liabilities Payments Due [Abstract]
2021	$ 45
2022	77
Total lease payments	122
Less imputed interest	(3)
Lease liability	$ 119	$ 40

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License, Collaboration and Grant Award/ Subaward Agreements - Additional Information (Details) - USD ($)	1 Months Ended			3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 31, 2017	Aug. 31, 2017	May 31, 2016	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2017	Dec. 31, 2015	Dec. 31, 2020	Jul. 31, 2020	Dec. 31, 2014
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Patent costs as general and administrative expense				$ 2,802,000	$ 1,933,000	$ 8,977,000	$ 6,910,000
Grant revenue				2,128,000	585,000	3,759,000	1,787,000
Deferred grant revenue				158,000		158,000				$ 1,633,000
The National Institute of Health (“NIH”) Grant Awards
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Grants awarded to researchers	$ 2,200,000
Grant revenue				50,000		50,000
Payable to subawardees	$ 700,000
Award payments received				0		0
MD Anderson Cancer Center
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Research and development expense				0	200,000	100,000	200,000
Aggregate cost											$ 820,000,000
Regents of the University of California
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Research and development expense				0	25,000	25,000	25,000
Upfront license fees paid			$ 500,000
Common stock, shares, issued			107,108
Annual license maintenance fees								$ 25,000
Worldwide sales milestones based on achievement of tiered revenue levels			$ 75,000,000.0
Patent costs as general and administrative expense				100,000	100,000	300,000	100,000
University of California San Diego School of Medicine | The California Institute for Regenerative Medicine ("CIRM") Award
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Grants awarded to researchers		$ 18,300,000
Development milestones to be received under research sub award agreements throughout award project period		$ 14,000,000.0
Subaward payments received				0	0	2,200,000	1,400,000
Grant revenue				2,100,000	600,000	3,700,000	1,800,000
Related qualifying subaward costs				4,200,000	1,300,000	7,500,000	4,100,000
Deferred grant revenue				200,000		200,000				$ 1,600,000
Maximum | Regents of the University of California
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Potential regulatory milestone payments			12,500,000
Minimum [Member] | Regents of the University of California
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Potential regulatory milestone payments			10,000,000.0
Advance licensed assets			$ 1,000,000.0
Exclusive License Agreement | Georgetown University
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Annual license maintenance fee to be paid and payment made									$ 10,000
Potential milestone payments				0		$ 0
Written notice of termination, period						90 days
Days after receipt of notice, to pay failure amount						30 days
Days after receipt of notice for default in payment						60 days
Minimum period in days of written notice to terminate license agreement						60 days
Exclusive License Agreement | Maximum | Georgetown University
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Potential milestone payments									$ 200,000
Collaboration Agreement | MD Anderson Cancer Center
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Potential regulatory milestone payments												$ 1,000,000.0
Research Agreement | Regents of the University of California
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Research and development expense				$ 0	100,000	$ 300,000	400,000
Research agreement term				5 years
Aggregate research agreement budget				$ 3,600,000
Research amount payable quarterly				125,000
Regents License Agreement | Regents of the University of California
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Written notice of termination, period						60 days
License Agreement | University of Tennessee Research Foundation
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Research and development expense				$ 0	$ 100,000	$ 100,000	$ 200,000

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Stockholders' Equity - Securities Purchase Agreements and Underwritten Offering (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended					9 Months Ended
	Dec. 31, 2020	Nov. 30, 2020	Aug. 31, 2020	Jul. 31, 2020	May 31, 2020	Sep. 30, 2020	Sep. 30, 2021	Jun. 30, 2021
Schedule Of Capitalization Equity [Line Items]
Proceeds from issuance of common stock and common stock warrants, net						$ 14,487
Warrants issued	5,031,841,000						4,234,910,000
Warrant exercise price per share	$ 9.25							$ 10.50
Warrants to purchase common stock
Schedule Of Capitalization Equity [Line Items]
Combined purchase price of share and warrant per unit	4.50	$ 3.10	$ 2.10
Warrant exercise price per share	$ 5.625	$ 3.875	$ 2.625
Common stock warrants exercisable and expiration date	Dec. 09, 2025	Nov. 17, 2025	Aug. 27, 2025
Warrants to purchase common stock | Maximum
Schedule Of Capitalization Equity [Line Items]
Warrants issued	1,149,700	435,484	145,733
Common Stock
Schedule Of Capitalization Equity [Line Items]
Common stock, shares, issued	19,161,667	7,258,065	2,428,886
Proceeds from issuance of common stock and common stock warrants, net	$ 79,000	$ 20,400	$ 4,400
Purchase Agreement | Warrants to purchase common stock
Schedule Of Capitalization Equity [Line Items]
Combined purchase price of share and warrant per unit					$ 2.5725
Purchase Agreement | Warrants to purchase common stock | Maximum
Schedule Of Capitalization Equity [Line Items]
Warrants issued					971,818
Purchase Agreement | Warrants to purchase common stock | Placement Agent
Schedule Of Capitalization Equity [Line Items]
Warrants issued					116,618
Warrant exercise price per share					$ 3.2156
Common stock warrants exercisable and expiration date					May 21, 2025
Purchase Agreement | Common Stock
Schedule Of Capitalization Equity [Line Items]
Common stock, shares, issued					1,943,636
Proceeds from issuance of common stock and common stock warrants, net					$ 4,400
July Purchase Agreement | Warrants to purchase common stock
Schedule Of Capitalization Equity [Line Items]
Combined purchase price of share and warrant per unit				$ 2.3825
Warrant exercise price per share				$ 2.32
Common stock warrants expiration date				Jan. 21, 2026
July Purchase Agreement | Warrants to purchase common stock | Maximum
Schedule Of Capitalization Equity [Line Items]
Warrants issued				1,290,933
July Purchase Agreement | Warrants to purchase common stock | Placement Agent
Schedule Of Capitalization Equity [Line Items]
Warrants issued				154,912
Warrant exercise price per share				$ 2.9781
Common stock warrants exercisable and expiration date				Jul. 21, 2025
July Purchase Agreement | Common Stock
Schedule Of Capitalization Equity [Line Items]
Common stock, shares, issued				2,581,867
Proceeds from issuance of common stock and common stock warrants, net				$ 5,700

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Stockholders' Equity - Summary Of Warrant Activity And Changes In Warrants Outstanding (Details) - $ / shares	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Equity [Abstract]
Options outstanding, Number of Warrant	5,031,841,000
Number of Shares Underlying Warrants Exercised	(796,931,000)
Options outstanding, Number of Warrant	4,234,910,000	5,031,841,000
Weighted-Average Exercise Price	$ 9.25
Exercised	$ 2.56
Weighted-Average Exercise Price		$ 9.25
Weighted-Average Remaining Contractual Term	3 years 6 months 25 days	4 years 4 months 24 days
Weighted-Average Remaining Contractual Term, Exercised	4 years 6 months 25 days

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Stockholders' Equity - Equity Incentive Plans (Details) - $ / shares		1 Months Ended	9 Months Ended
	Jun. 07, 2019	Jul. 31, 2015	Sep. 30, 2021	Sep. 30, 2020	Feb. 11, 2021
Class Of Stock [Line Items]
Number of common stock shares provided for issuance of stock awards to its employees			11,776,000
2019 incentive award plan
Class Of Stock [Line Items]
Shares of common stock reserved for issuance	1,678,571,000
Maximum number of shares of common stock a participant may receive	275,579,000
Percentage of annual increase in shares reserved for issuance	5.00%
2019 incentive award plan and inducement plan
Class Of Stock [Line Items]
Number of common stock shares provided for issuance of stock awards to its employees			1,521,432
2013 plan
Class Of Stock [Line Items]
Number of options outstanding and fully vested and exercisable			275,579
2015 plan
Class Of Stock [Line Items]
Options expiration term		10 years
Options vesting period		4 years
2015 plan | Private Oncternal
Class Of Stock [Line Items]
Number of common stock shares provided for issuance of stock awards to its employees		631,120
GTx Stock Option Plans
Class Of Stock [Line Items]
Number of options outstanding and fully vested and exercisable			0
2019 plan
Class Of Stock [Line Items]
Options expiration term		10 years
Options vesting period		4 years
Inducement Plan
Class Of Stock [Line Items]
Number of common stock shares provided for issuance of stock awards to its employees					2,050,000,000
2019 and 2015 plan
Class Of Stock [Line Items]
Weighted average grant date fair value per share of option grants			$ 4.48	$ 2.40
Intrinsic value of stock options exercised			$ 3.89	$ 2.03

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Stockholders' Equity - Summary of Stock Option Outstanding, Vested and Expected to Vest and Exercisable (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options outstanding, Number of Shares	6,019,412,000	2,107,625,000
Options vested and expected to vest, Number of Shares	6,019,412,000
Options exercisable, Number of Shares	1,300,174,000
Options outstanding, Weighted Average Exercise Price	$ 5.37	$ 4.08
Options outstanding, Weighted Average Exercise Price	5.37
Options outstanding, Weighted Average Exercise Price	$ 3.79
Options outstanding, Weighted Average Remaining Contractual Term	3 years 2 months 12 days
Options outstanding, Aggregate Intrinsic Value	$ 1,732,115
Options outstanding, Aggregate Intrinsic Value	1,732,115
Options outstanding, Aggregate Intrinsic Value	$ 1,365,004
Equity incentive plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options outstanding, Weighted Average Remaining Contractual Term	8 years 9 months 29 days
Options outstanding, Weighted Average Remaining Contractual Term	8 years 9 months 29 days
Options outstanding, Weighted Average Remaining Contractual Term	6 years 10 months 20 days

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Stockholders' Equity - Summary of Stock Option Activity (Details)	9 Months Ended
	Sep. 30, 2021 $ / shares shares
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Roll Forward
Number of options, beginning balance | shares	2,107,625,000
Number of options, granted | shares	4,396,700,000
Number of options, cancelled | shares	(378,750,000)
Number of options, exercised | shares	(106,163,000)
Number of options, ending balance | shares	6,019,412,000
Weighted average exercise price, beginning balance | $ / shares	$ 4.08
Weighted average exercise price, granted | $ / shares	5.98
Weighted average exercise price, cancelled | $ / shares	5.66
Weighted average exercise price, exercised | $ / shares	3.89
Weighted average exercise price, ending balance | $ / shares	$ 5.37

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Stockholders' Equity - Schedule of Assumptions Used to Estimate Fair Value of Stock Option Grants (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Risk-free interest rate	1.00%	0.70%	0.80%	0.80%
Expected volatility	100.30%	98.60%	91.80%	92.20%
Expected term (in years)	6 years	10 years	6 years 2 months 12 days	6 years 7 months 6 days

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Stockholders' Equity - Share-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 1,488	$ 407	$ 4,162	$ 1,149
Research and development
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	920	129	2,097	398
General and administrative
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 568	$ 278	$ 2,065	$ 751

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Stockholders' Equity - Stock-Based Compensation Expense (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021 USD ($)
Equity [Abstract]
Compensation cost related to non-vested awards not yet recognized	$ 17.7
Remaining weighted-average period	3 years 2 months 12 days

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Stockholders' Equity - Common Stock Reserved for Future Issuance (Details)	Sep. 30, 2021 shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock warrants	4,235,000
Common stock options issued and outstanding	6,019,000
Common stock available for future issuance	11,776,000
2019 incentive award plan and inducement plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock available for issuance under the Inducement Plan and 2019 Plan	1,522,000
Common stock available for future issuance	1,521,432

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Subsequent Event - Additional Information (Details) - CVR Agreement	Nov. 01, 2021 CVR
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Contingent value right per common stock | CVR	1
Percentage of net proceeds entitled to be received per CVR	50.00%
Period from closing during which payment of percentage of net proceeds would be payable under the CVR	15 years
Period from closing during which the grant, sale or transfer of rights to the Company's SARD or SARM technology could trigger a payment under the CVR Agreement	10 years