10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

_________________

FORM 10-Q

_________________

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

For the quarterly period ended March 31, 2021

or

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from _________ to _________

Commission File Number: 001-36866

_______________________________

Summit Therapeutics Inc.

(Exact name of registrant as specified in its charter)

_____________________

Delaware	37-1979717
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

One Broadway, 14th Floor,

Cambridge, MA

(Address of principal executive offices)

02142

(Zip Code)

617-514-7149

(Registrant’s telephone number, including area code)

Not Applicable

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

_________________

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

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, $0.01 par value per share	SMMT	The Nasdaq Stock Market LLC

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

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

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer”, “accelerated filer” and “smaller reporting 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 May 12, 2021, there were 97,244,567 shares of common stock, par value $0.01 per share, outstanding.

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		Page
PART I
Item 1.	Condensed Consolidated Financial Statements (unaudited)
	Condensed Consolidated Balance Sheets as of March 31, 2021 and December 31, 2020	5
	Condensed Consolidated Statements of Comprehensive Loss for the three months ended March 31, 2021 and 2020	6
	Condensed Consolidated Statements of Stockholders' Equity for the three months ended March 31, 2021 and 2020	7
	Condensed Consolidated Statements of Cash Flows for the three months ended March 31, 2021 and 2020	8
	Notes to Unaudited Condensed Consolidated Financial Statements	9
Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	17
Item 3.	Quantitative and Qualitative Disclosures About Market Rick	23
Item 4.	Controls and Procedures	23
PART II
Item 1.	Legal Proceedings	24
Item 1A.	Risk Factors	24
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	24
Item 3.	Defaults Upon Senior Securities	24
Item 4.	Mine Safety Disclosures	24
Item 5	Other Information	24
Item 6.	Exhibits	25
Signatures

2

INFORMATION REGARDING FORWARD-LOOKING STATEMENTS

This Report contains forward-looking statements that involve substantial risks and uncertainties. All statements contained in this Report, other than statements of historical fact, including statements regarding our strategy, future operations, future financial position, future revenues, projected costs, prospects, plans and objectives of management, are forward-looking statements. The words “anticipate,” “believe,” “estimate,” “expect,” “intend,” “may,” “plan,” “predict,” “project,” “target,” “potential,” “will,” “would,” “could,” “should,” “continue,” and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. The forward-looking statements in this Report include, among other things, statements about:

•the timing and conduct of our clinical trials of ridinilazole (formerly SMT19969) for the treatment and reduction of recurrence of patients with Clostridioides difficile infection (formerly known as Clostridium difficile infection), including statements regarding the timing of initiation and completion of the clinical trials and the period during which the results of the clinical trials will become available;

•the timing of and our ability to obtain marketing approval of ridinilazole, and the ability of ridinilazole to meet existing or future regulatory standards;

•the timing and conduct of clinical trials for any other product candidates;

•the potential benefits of our Discuva Platform to identify new bacterial targets for drug discovery and development;

•our plans to conduct research and development and advance potential new mechanism antibiotic compounds identified and developed under our Discuva Platform;

•the potential benefits and future operation of our collaboration with the Biomedical Advanced Research and Development Authority, or BARDA;

•the potential benefits and future operation of our license and commercialization agreement with Eurofarma Laboratórios SA, or Eurofarma;

•our plans with respect to possible future collaborations and partnering arrangements;

•the potential benefits of possible future acquisitions or investments in other businesses, products or technologies;

•our plans to pursue research and development of other future product candidates;

•the potential advantages of ridinilazole and our other new mechanism antibiotics;

•the rate and degree of market acceptance and clinical utility of ridinilazole and our other new mechanism antibiotics;

•our estimates regarding the potential market opportunity for ridinilazole and our other new mechanism antibiotics;

•our sales, marketing and distribution capabilities and strategy;

•our ability to establish and maintain arrangements for manufacture of ridinilazole;

•our intellectual property position;

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

•the impact of government laws and regulations;

•our competitive position;

•our ability to continue as a going concern; and

•the impact of the novel coronavirus pandemic (COVID-19) and the response to it.

We may not actually achieve the plans, intentions or expectations disclosed in our forward-looking statements, and you should not place undue reliance on our forward-looking statements. Actual results or events could differ materially from the plans, intentions and expectations disclosed in the forward-looking statements we make. We have included important factors in the cautionary statements included in this Report, particularly in the “Risk Factors” section in this Report, that we believe could cause actual results or events to differ materially from the forward-looking statements that we make. Our forward-looking statements do not reflect the potential impact of any future acquisitions, mergers, dispositions, joint ventures or investments we may make.

You should read this Report and the documents that we have filed as exhibits to this Report completely and with the understanding that our actual future results may be materially different from what we expect. We do not assume any obligation to update any forward-looking statements.

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SPECIAL NOTE REGARDING THE REDOMICILIATION

On September 18, 2020, Summit Therapeutics Inc., a Delaware corporation, or New Summit, became the successor issuer to Summit Therapeutics plc, a public limited company incorporated under the laws of England and Wales with the Registrar of Companies of England and Wales, United Kingdom, or Old Summit, for certain purposes under both the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, or the Exchange Act. Such succession occurred pursuant to a scheme of arrangement under UK law, which resulted in New Summit becoming the holding company of Old Summit (the predecessor registrant and former holding company) and its subsidiaries, which we refer to as the Redomiciliation Transaction. On September 18, 2020, Old Summit was converted into a private limited company under the laws of England and Wales and renamed Summit Therapeutics Ltd.

Unless the context requires otherwise, all references in this Report to "Summit," "the Summit Group," "the Company," "we," "our," "us," or similar terms on or prior to September 18, 2020 (the effective date of the Redomiciliation Transaction), refer to our predecessor, Summit Therapeutics plc, together with its subsidiaries.

All share and per share amounts for periods prior to the Redomiciliation Transaction in this filing have been retroactively reflected to be presented in shares of our common stock, par value $0.01 per share.

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PART I - FINANCIAL INFORMATION

Item 1. Financial Statements.

Summit Therapeutics Inc.

Unaudited Condensed Consolidated Balance Sheets

(in thousands, except share data)

	March 31, 2021		December 31, 2020
Assets
Current assets:
Cash and cash equivalents	$	102,194	$	66,417
Accounts receivable	447		331
Prepaid expenses	7,995		9,547
Other current assets	985		1,523
Research and development tax credit receivables	13,596		9,856
Total current assets	125,217		87,674
Property and equipment, net	684		725
Right-of-use assets	1,487		554
Goodwill	2,047		2,030
Intangible assets, net	11,359		11,515
Total assets	$	140,794	$	102,498
Liabilities and stockholders' equity
Current liabilities:
Accounts payable	$	4,114	$	6,140
Accrued expenses	4,915		4,261
Other current liabilities	581		729
Lease liabilities	1,056		390
Deferred revenue and income	7,423		8,370
Promissory note payable to a related party	54,963		—
Total current liabilities	73,052		19,890
Deferred revenue and income	383		569
Lease liabilities	351		75
Other non-current liabilities	2,603		2,511
Total liabilities	76,389		23,045
Commitments and contingencies
Stockholders' equity:
Common stock, $0.01 par value: 250,000,000 shares authorized; 82,919,522 and 82,575,064 shares issued and outstanding at March 31, 2021 and December 31, 2020, respectively	829		826
Additional paid-in capital	295,129		293,367
Accumulated other comprehensive loss	(3,119)		(3,794)
Accumulated deficit	(228,434)		(210,946)
Total stockholders' equity	64,405		79,453
Total liabilities and stockholders' equity	$	140,794	$	102,498

The accompanying notes form an integral part of these condensed consolidated interim financial statements.

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Summit Therapeutics Inc.

Unaudited Condensed Consolidated Statements of Comprehensive Loss

(in thousands, except share and per share amounts)

	Three Months Ended March 31,
	2021		2020
Revenue	$	192	$	324
Operating expenses:
Research and development	18,379		12,912
General and administrative	4,185		3,572
Total operating expenses	22,564		16,484
Other operating income	5,449		6,820
Operating loss	(16,923)		(9,340)
Other income (expense), net	(565)		3,261
Loss before income tax expense	(17,488)		(6,079)
Income tax expense	—		(55)
Net loss	$	(17,488)	$	(6,134)
Loss per share:
Basic and Diluted	$	(0.21)	$	(0.09)
Weighted-average shares used to compute loss per share:
Basic and Diluted	82,817,836		67,217,701
Other comprehensive income / (loss):
Change in foreign currency translation adjustment	675		(4,624)
Comprehensive loss	$	(16,813)	$	(10,758)

The accompanying notes form an integral part of these condensed consolidated interim financial statements.

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Summit Therapeutics Inc.

Unaudited Condensed Consolidated Statements of Stockholders' Equity

(in thousands, except share data)

	Three Months Ended March 31, 2021
	Common Stock			Additional Paid-In Capital		Accumulated Other Comprehensive Loss		Total Accumulated Deficit		Total Stockholders' Equity
	Shares	Amount
Balance at December 31, 2020	82,575,064	$	826	$	293,367	$	(3,794)	$	(210,946)	$	79,453
Issuance of common stock from exercise of stock options	344,458	3		894		—		—		897
Stock-based compensation	—	—		868		—		—		868
Foreign currency translation adjustment	—	—		—		675		—		675
Net loss	—	—		—		—		(17,488)		(17,488)
Balance at March 31, 2021	82,919,522	$	829	$	295,129	$	(3,119)	$	(228,434)	$	64,405
	Three Months Ended March 31, 2020
	Common Stock			Additional Paid-In Capital		Accumulated Other Comprehensive Loss		Total Accumulated Deficit		Total Stockholders' Equity
	Shares	Amount
Balance at December 31, 2019	67,178,054	$	672	$	241,204	$	(4,764)	$	(158,249)	$	78,863
Issuance of common stock from exercise of stock options	53,846	—		3		—		—		3
Stock-based compensation	—	—		297		—		—		297
Foreign currency translation adjustment	—	—		—		(4,624)		—		(4,624)
Net loss	—	—		—		—		(6,134)		(6,134)
Balance at March 31, 2020	67,231,900	$	672	$	241,504	$	(9,388)	$	(164,383)	$	68,405

The accompanying notes form an integral part of these condensed consolidated interim financial statements.

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Summit Therapeutics Inc.

Unaudited Condensed Consolidated Statements of Cash Flows

(in thousands)

	Three Months Ended March 31,
	2021		2020
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$	(17,488)	$	(6,134)
Adjustments to reconcile net loss to net cash used in operating activities:
Non-cash interest expense	103		66
Unrealized foreign exchange gain	(1,719)		75
Depreciation of operating right-of-use assets	152		112
Depreciation	80		72
Amortization of intangible assets	255		266
Stock-based compensation	868		297
Change in operating assets and liabilities:
Accounts receivable	(114)		(1,246)
Prepaid expenses	1,638		(472)
Other current assets	549		33
Research and development tax credit receivable	(3,661)		(1,645)
Deferred revenue and income	(1,200)		1,727
Accounts payable	(2,082)		2,696
Accrued liabilities	2,102		(745)
Lease liabilities	(152)		(61)
Net cash used in operating activities	(20,669)		(4,959)
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of property and equipment	(39)		(30)
Purchase of intangible assets	—		(164)
Net cash used in investing activities	(39)		(194)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from related party promissory note	55,000		—
Proceeds from exercise of stock options	897		3
Net cash provided by financing activities	55,897		3
Effect of exchange rates on cash and cash equivalents	588		(3,749)
Increase / (decrease) in cash and cash equivalents	35,777		(8,899)
Cash and cash equivalents at beginning of the period	66,417		63,842
Cash and cash equivalents at end of the period	$	102,194	$	54,943
	Three Months Ended March 31,
	2021		2020
Supplemental Disclosure of Cash Flow Information
Cash paid for income taxes	$	—	$	6
Debt issuance costs in accrued expenses	$	38	$	—

The accompanying notes form an integral part of these condensed consolidated interim financial statements.

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Summit Therapeutics Inc.

Notes to Unaudited Condensed Consolidated Financial Statements

1. Nature of the business and operations

Summit Therapeutics Inc. ("Summit" or the "Company") is a biopharmaceutical company focused on the discovery, development and commercialization of novel antibiotics for serious infectious diseases. Summit is conducting a Phase 3 clinical program focused on the infectious disease C. difficile infection, or CDI. It is also seeking to expand the product candidate portfolio through the development of new mechanism, precision antibiotics using the proprietary Discuva Platform.

On September 18, 2020, Summit, a Delaware corporation, became the successor issuer to Summit Therapeutics plc, a public limited company incorporated under the laws of England and Wales with the Registrar of Companies of England and Wales, United Kingdom, for certain purposes under both the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, or the Exchange Act. Such succession occurred pursuant to a statutory scheme of arrangement under U.K. law pursuant to which all Summit Therapeutics plc outstanding ordinary shares were exchanged on a five-for-one basis for newly issued shares of Summit common stock and Summit became the holding company of Summit Therapeutics plc (the predecessor registrant and former holding company) and its subsidiaries, which is referred to as the Redomiciliation Transaction. Concurrently, Summit Therapeutics plc was converted into a private limited company under the laws of England and Wales and renamed Summit Therapeutics Limited. In addition, the warrants and stock options to purchase shares of Summit Therapeutics plc were canceled and replacement warrants and stock options to purchase common stock in Summit Therapeutics Inc. were issued. The scheme of arrangement was accounted for as an exchange of equity interests among entities under common control. All assets and liabilities of Summit Therapeutics plc were assumed by Summit, resulting in the retention of the historical basis of accounting as if they had always been combined for accounting purposes and the historical consolidated financial statements of Summit Therapeutics plc became the historical consolidated financial statements of Summit Therapeutics Inc. All share and per share amounts for periods prior to the Redomiciliation Transaction in the financial statements have been retroactively reflected to be presented in shares of our common stock, par value $0.01 per share.

2. Basis of presentation and summary of significant accounting policies

The accompanying unaudited interim consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States ("GAAP") and pursuant to the rules and regulations of the U.S. Securities and Exchange Commission. Accordingly, certain information and disclosures required by GAAP for complete consolidated financial statements are not included herein. These unaudited interim consolidated financial statements should be read in conjunction with the audited financial statements and notes thereto of Summit Therapeutics Inc. and its consolidated subsidiaries (the "Company") which are included in the Annual Report on Form 10-K, filed on March 31, 2021.

In the opinion of management, the accompanying unaudited condensed consolidated financial statements contain all adjustments, consisting of a normal recurring nature, necessary for a fair statement of its financial position as of March 31, 2021, and its results of operations for the three months ended March 31, 2021 and 2020, and cash flows for the three months ended March 31, 2021 and 2020. The balance sheet at December 31, 2020, was derived from audited annual financial statements but does not contain all of the footnote disclosures from the annual financial statements. The results of the period are not necessarily indicative of full year results or any other interim period. The financial results of the Company's activities are reported in U.S. dollars (“USD”).

Certain prior period amounts within the consolidated statements of operations and comprehensive (loss) income for the three months ended March 31, 2020 have been reclassified to conform to the current period presentation. Specifically, a foreign currency gain of $3.3 million previously included as part of total operating expenses within general and administrative expenses has been reclassified to be presented as part of other income (expense), net and expenses of $0.4 million previously reported as general and administration expenses are now presented as research and development expenses in conformity with the current period presentation.

During the quarter ended December 31, 2020, the Company identified a deferred tax asset relating to the acquired carried forward tax losses arising from the acquisition of Discuva Limited in December 2017 that was not included as part of the business combination accounting. Furthermore, the Company identified deferred tax assets relating to available carried forward group tax losses arising as a result of the acquisition of Discuva Limited in December 2017 that were not included in

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the Company's subsequent balances sheets. As a result, in the Company's previously issued March 31, 2020 financial statements, the Company incorrectly recognized $0.4 million of goodwill and omitted the inclusion of deferred tax assets of $1.9 million in the balance sheet as of March 31, 2020. Since the Company's deferred tax liabilities and deferred tax assets both arise in the U.K. tax jurisdiction, accordingly these are offset on the consolidated balance sheet. The Company records a full valuation allowance against the deferred tax assets in excess of the deferred tax liabilities, as the deferred tax liability represents future reversals of existing taxable temporary differences. The impact of these errors on net (loss) income was a deferred tax benefit of $0.2 million the three months ended March 31, 2020. The misstatement had no net impact on the Company’s consolidated statements of cash flows. Management concluded that the correction was not material to previously issued consolidated financial statements. Since these errors were not material to any previously issued annual or interim financial statements, no amendments to previously filed financial statements were required. Consequently, the Company has corrected for these errors by revising the March 31, 2020 balances herein and the annual financial statements on the Company's Form 10-K, filed on March 31, 2021.

Use of Estimates

The preparation of the consolidated financial statements in conformity with U.S. GAAP requires the use of estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Impact of COVID-19

During the first quarter of 2020, there was a global outbreak of a novel coronavirus, or COVID-19, which was subsequently declared as a pandemic by the World Health Organization. The global impact of the outbreak rapidly evolved, triggering a period of global economic slowdown. The rapid development and fluidity of this situation precludes any prediction as to the ultimate adverse impact of COVID-19 on economic and market conditions.

Management believes the estimates and assumptions underlying our unaudited interim consolidated financial statements are reasonable and supportable based on the information available as of March 31, 2021, however uncertainty over the ultimate impact COVID-19 will have on the global economy generally makes any estimates and assumptions as of March 31, 2021 inherently less certain than they would be absent the current and potential impacts of COVID-19. Actual results may ultimately differ from those estimates.

Recently adopted accounting standards

In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740), Simplifying the Accounting for Income Taxes. The amendments in this ASU are intended to simplify the accounting for income taxes by removing certain exceptions to the general principles in Topic 740. The amendments are also intended to improve consistent application of and simplify GAAP for other areas of Topic 740 by clarifying and amending existing guidance. This ASU became effective for the Company on January 1, 2021. The adoption of this update did not have a material impact on the Company’s consolidated financial statements.

Recent accounting standards not yet adopted

In January 2017, the FASB issues ASU 2017-04, Intangibles - Goodwill and Other (Topic 350). This update simplifies the accounting for goodwill impairments by removing the requirement to determine the fair value of individual assets and liabilities in order to calculate a reporting unit’s “implied” goodwill under the current guidance. This update will be effective for the Company for fiscal years beginning after December 15, 2022. The adoption of this update is not expected to have a material impact on the Company’s consolidated financial statements.

Other recent authoritative guidance issued by the FASB (including technical corrections to the FASB ASC), the American Institute of Certified Public Accountants, and the SEC did not, or are not expected to have a material impact on the Company's consolidated financial statements.

3. Going concern

The accompanying consolidated financial statements are prepared assuming the Company will continue as a going concern, which contemplates the realization of assets and satisfaction of liabilities in the normal course of the business. As of March 31, 2021, the Company had cash and cash equivalents of $102.2 million and an accumulated deficit of $228.4 million. During

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the three months ended March 31, 2021, the Company incurred a net loss of $17.5 million and used $20.7 million of cash in operating activities. The Company expects to continue to generate operating losses for the foreseeable future. Until such time as the Company can generate substantial revenue and achieve profitability, the Company will need to raise additional capital.

On May 12, 2021, the Company closed its previously announced rights offering, which was fully subscribed. The Company received aggregate gross proceeds from the rights offering of $75.0 million from the sale of 14,312,976 shares of the Company’s common stock, par value $0.01, at a price per share of $5.24. In connection with the closing of the rights offering, the unsecured promissory note of $55.0 million received from Mr. Duggan on April 20, 2021, matured and became due, and the Company repaid all principal and accrued interest thereunder using a portion of the proceeds of the rights offering. The Company's existing cash resources, funding agreements, research and development tax credits receivable and the net proceeds of the rights offering, are expected to be sufficient to enable the Company to fund its current operating plans until the fourth quarter of 2022.

The Company continues to evaluate options to further finance its cash needs through a combination of some, or all, of the following: equity and debt offerings, collaborations, strategic alliances, grants and clinical trial support from government entities, philanthropic, non-government and not-for-profit organizations and patient advocacy groups, and marketing, distribution or licensing arrangements. While the Company believes that funds would be available in this manner before the fourth quarter of 2022, there can be no assurance that the Company will be able to generate funds, on terms acceptable to the Company, on a timely basis or at all, which would impact the Company’s ability to continue as a going concern.

4. Segment reporting

The Company's chief operating decision maker, the Company’s Chief Executive Officer and Chief Operating Officer, views the Company’s operations and manages its business as a single reportable operating segment. The Company's single operating segment covers the Company’s research and development activities, primarily comprising the C. difficile infection ("CDI") program and antibiotic pipeline research activities. Since the Company operates in one operating segment, all required financial segment information can be found in the condensed consolidated financial statements.

The Company operates in two geographic regions: the United Kingdom and the United States. Substantially all of the Company's long-lived assets are held in the United Kingdom.

For details of revenue from external customers by geography refer to Note 5.

5. Revenue

	Three Months Ended March 31,
	2021		2020
Analysis of revenue by category:	(in thousands)
Licensing agreements	$	192	$	324
	$	192	$	324

Revenue recognized in the period consists only of amounts received from the license and commercialization agreement with Eurofarma Laboratórios S.A.

	Three Months Ended March 31,
	2021		2020
Analysis of revenue by geography:	(in thousands)
Latin America	$	192	$	324
	$	192	$	324

The analysis of revenue by geography has been identified on the basis of the customer’s geographical location.

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Eurofarma Laboratórios S.A.

On December 21, 2017, Summit announced it had entered into an exclusive license and commercialization agreement with Eurofarma Laboratórios S.A. ("Eurofarma"), pursuant to which the Company granted Eurofarma the exclusive right to commercialize ridinilazole in specified countries in South America, Central America and the Caribbean. The Company has retained commercialization rights in the rest of the world.

Under the terms of the license and commercialization agreement with Eurofarma, the Company received an upfront payment of $2.5 million from Eurofarma in December 2017. In February 2020, the Company reached the first enrollment milestone and received $1.0 million. The terms of the contract have been assessed under ASC 606 and currently only the upfront payment and the first enrollment milestone payment are included in the transaction price. These payments were initially reported as deferred revenue in the balance sheet and are being recognized as revenue ratably over the performance period.

For the three months ended March 31, 2021 the Company recognized $0.2 million of revenue and $0.3 million for the three months ended March 31, 2020, which related to the upfront payment and the first enrollment milestone in accordance with the Company's revenue recognition policy. The revenue is being recognized ratably over the performance period to reflect the transfer of control to the customer occurring over the time period that the research and development services are provided by the Company, and this output method is, in management’s judgment, the best measure of progress towards satisfying the performance obligation.

In addition, the Company will be entitled to receive an additional $2.75 million in development milestones upon the achievement of staged patient enrollment targets in the licensed territory in one of the two planned Phase 3 clinical trials of ridinilazole. The Company is eligible to receive up to $21.4 million in development, commercial and sales milestones when cumulative net sales equal or exceed $100.0 million in the Eurofarma licensed territory. Each subsequent achievement of an additional $100.0 million in cumulative net sales will result in the Company receiving additional milestone payments, which, when combined with anticipated product supply transfer payments from Eurofarma paid to the Company in connection with a commercial supply agreement to be entered into between the two parties, will provide payments estimated to range from a mid-teens to high-teens percentage of cumulative net sales in the Eurofarma licensed territory. The Company estimates such product supply transfer payments from Eurofarma will range from a high single-digit to low double-digit percentage of cumulative net sales in the licensed territory.

6. Other operating income

	Three Months Ended March 31,
	2021		2020
Analysis of other operating income by category:	(in thousands)
Income recognized in respect of BARDA	$	1,770	$	4,949
Research and development credits	3,679		1,764
Grant income	—		107
	$	5,449	$	6,820

BARDA

In September 2017, the Company was awarded a funding contract from the Biomedical Advanced Research and Development Authority ("BARDA"), an agency of the US government's Department of Health and Human Services' Office of the Assistant Secretary for Preparedness and Response, to fund a specified portion of the clinical and regulatory development activities of ridinilazole for the treatment and reduction of recurrence of CDI.

Under the terms of this contract, the Company was initially eligible to receive base period funding of $32 million. In addition, the contract included three option work segments that, if exercised in full by BARDA, would increase the total federal government funding under the contract to approximately $62 million. In August 2018, BARDA exercised one of the option work segments worth $12 million. In June 2019, BARDA increased the total value of the funding contract to up to $63.7 million; at this time, BARDA also exercised a second of the option work segments worth $9.6 million to bring the total amount of committed BARDA funding to $53.6 million. In January 2020, BARDA increased its award by $8.8 million to bring the total amount of the funding contract to $72.5 million and the total amount of committed BARDA funding to $62.4 million. The remaining federal government funding is dependent on BARDA in its sole discretion exercising the final independent option work segment, upon the achievement by the Company of certain agreed-upon milestones for ridinilazole.

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As of March 31, 2021, an aggregate of $53.9 million of the total committed BARDA funding had been received and the Company has recognized $47.4 million of cumulative income since contract inception.

Research and development credits

Income from research and development ("R&D") tax credits, consists of R&D tax credits received in the U.K. The Company benefits from two U.K. R&D tax credit cash rebate regimes: Small and Medium Enterprise, or SME, Program and the Research and Development Expenditure Credit ("RDEC") Program. Qualifying expenditures largely comprise employment costs for research staff, consumables, a proportion of relevant, permitted sub-contract costs and certain internal overhead costs incurred as part of research projects for which the Company does not receive income. Tax credits related to the SME Program and RDEC are recorded as other operating income in the consolidated statements of operations and other comprehensive (loss) income. Under both schemes, the Company receives cash payments that are not dependent on the Company’s pre-tax net income levels.

Based on criteria established by Her Majesty’s Revenue and Customs, or HMRC, a portion of expenditures being carried out in relation to the Company's pipeline research and development, clinical trials management and third-party manufacturing development activities are eligible for the SME regime and the Company expects such elements of expenditure will also continue to be eligible for the SME regime for future accounting periods.

For the three months ended March 31, 2021 and March 31, 2020, the Company recognized research and development tax relief in respect of the SME regime of $3.5 million and $1.6 million, respectively, the remaining research and development credit related to the RDEC regime.

CARB-X

Grant income in the prior period consists of income from a sub-award from the Trustees of Boston University under the Combating Antibiotic Resistant Bacteria Biopharmaceutical Accelerator program ("CARB-X") for the Company's antibiotic pipeline research and development activities specifically relating to the DDS-01 series of antibiotics. In the fourth quarter of 2020, the Company decided not to advance the DDS-01 series and to cease work on the gonorrhea program, as such no further grant income is expected to be received from CARB-X under the award.

7. Loss per share

The calculation of loss per share is based on the following data:

	Three Months Ended March 31,
	2021		2020
	(in thousands, except share data)
Net loss	$	(17,488)	$	(6,134)
Basic weighted average number of shares of common stock outstanding	82,817,836		67,217,701
Diluted weighted average number of shares of common stock outstanding	82,817,836		67,217,701
Basic loss per share from operations	(0.21)		(0.09)
Diluted loss per share from operations	(0.21)		(0.09)
Anti-dilutive shares excluded from diluted earnings per share	11,360,940		12,651,602

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8. Intangible assets

	March 31, 2021						December 31, 2020
	Gross carrying amount		Accumulated amortization and impairment		Net		Gross carrying amount		Accumulated amortization and impairment		Net
(In thousands)
Utrophin program acquired	$	4,572	$	(4,572)	$	—	$	4,534	$	(4,534)	$	—
Discuva platform acquired	14,689		(3,330)		11,359		14,565		(3,050)		11,515
Option over non-financial asset	929		(929)		—		921		(921)		—
Other patents and licenses	151		(151)		—		150		(150)		—
	$	20,341	$	(8,982)	$	11,359	$	20,170	$	(8,655)	$	11,515

Amortization expense was $0.3 million for the periods ended March 31, 2021 and March 31, 2020.

9. Promissory note payable to a related party

On March 24, 2021, the Company entered into a Note Purchase Agreement (the “Initial Purchase Agreement”) pursuant to which Robert W. Duggan, the Company's Executive Chairman, Chief Executive Officer and primary stockholder, loaned the Company $55.0 million in exchange for the issuance by the Company of an unsecured promissory note (the “Initial Note”) in the amount of $55.0 million. The Initial Note was to accrue interest at a rate per annum equal to 150% of the applicable 10 Year US Treasury rate, as adjusted monthly. The rate was initially estimated to be approximately 2.4%. The terms of the Initial Note were that it would mature and become due upon the earlier of (i) the consummation of a registered public offering with net proceeds of no less than $55.0 million, or (ii) 13 months from the date of issuance of the Initial Note.

The Company incurred and capitalized an immaterial amount of debt issuance costs upon entering into the Initial Note, these costs are amortized over the term of the Initial Note. For the three months ended March 31, 2021, the Company recognized interest expense of $27 thousand (March 31, 2020: $nil) in respect of the Initial Note. As of March 31, 2021, the balance of the Initial Note was $55.0 million (March 31, 2020: $nil).

Subsequent to period end, the Company determined, with Mr. Duggan’s agreement, to rescind both the Initial Purchase Agreement and the Initial Note issued, and repaid the principal amount of the Initial Note in full, without interest or penalty. See Note 12 Subsequent events for further details.

10. Stock based compensation

The following table summarizes stock option activity as of March 31, 2021, and changes during the three months ended March 31, 2021:

	Three Months Ended March 31, 2021	Weighted average exercise price
Outstanding at January 1, 2021	3,672,968	$	2.90
Granted	2,196,350	$	4.77
Forfeited	(11,980)	$	2.57
Exercised	(317,535)	$	2.82
Number of outstanding options	5,539,803	$	3.64
Exercisable at March 31, 2021	616,503	$	2.13

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In addition to the stock options outstanding above, as of March 31, 2021, the Company had granted 6,657,136 stock options subject to performance based conditions. As of March 31, 2021, the performance conditions had not been agreed and communicated and therefore a grant date for accounting purposes had not been established. As such, these performance based stock options have been excluded from the summary of stock option activity above and no expense has been recorded in the consolidated statement of operations.

The total intrinsic value of all outstanding and exercisable stock options at March 31, 2021 was $12.9 million and $2.3 million, respectively.

The following table summarizes restricted stock units ("RSUs") granted in the form of nominal-cost options as of March 31, 2021 and changes during the three months ended March 31, 2021:

	Three Months Ended March 31, 2021	Weighted average exercise price
Outstanding at January 1, 2021	26,932	$	0.07
Exercised during the period	(26,932)	$	0.07
Number of outstanding RSUs	—	$	—

The Company also had outstanding and exercisable warrants of 5,821,137 as of March 31, 2021 (December 31, 2020: 5,821,137) with weighted average exercise price of $1.56 and a total intrinsic value of $25.1 million.

The following table summarizes stock-based compensation expense reflected in the consolidated statements of operations:

	Three Months Ended March 31,
	2021		2020
	(in thousands)
Research and development	$	323	$	84
General and administrative	546		213
Total stock-based compensation expense	$	869	$	297

11. Related party transactions

On March 24, 2021, Mr. Duggan entered into a Note Purchase Agreement (the “Initial Purchase Agreement”) pursuant to which he loaned the Company $55.0 million in exchange for the issuance by the Company of an unsecured promissory note (the “Initial Note”) in the amount of $55.0 million. The Initial Note was to accrue interest at a rate per annum equal to 150% of the applicable 10 Year US Treasury rate, as adjusted monthly. The rate was initially estimated to be approximately 2.4%. The terms of the Initial Note were that it would mature and become due upon the earlier of (i) the consummation of a registered public offering with net proceeds of no less than $55.0 million, or (ii) 13 months from the date of issuance of the Initial Note. For the three months ended March 31, 2021, interest of $27 thousand accrued in respect of the Initial Note.

On April 20, 2021, the Company determined, with Mr. Duggan’s agreement, to rescind both the Initial Purchase Agreement entered into with Mr. Duggan on March 24, 2021 and the Initial Note issued thereunder, and repaid the principal amount of the Initial Note in full, without interest or penalty.

On April 20, 2021, subsequent to the repayment of the Initial Note, Mr. Duggan entered into a second Note Purchase Agreement (the “Second Purchase Agreement”) pursuant to which he loaned the Company $55.0 million in exchange for the issuance by the Company of an unsecured promissory note (the “Second Note”) in the amount of $55.0 million. The Second Note accrues interest at a rate per annum equal to 150% of the applicable 10 Year US Treasury rate, as adjusted monthly (initially estimated to be approximately 2.4%). The Company is permitted to prepay any portion of the Second Note at is option without penalty. The Second Note matures and becomes due upon the earlier of (i) the consummation of a registered public offering with net proceeds of no less than $55.0 million or (ii) 13 months from the date of issuance of the Second Note. Following consummation of the rights offering as described below in Note 12 Subsequent events, the Second Note matured and all principal and interest thereunder was repaid by the Company.

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On May 12, 2021, Mr. Duggan, participated in the Company's rights offering and purchased a total of 11,365,921 shares of the Company’s common stock, par value $0.01, at a price of $5.24 per share. After giving effect to the rights offering, Mr. Duggan is the beneficial owner of approximately 70.78% of the Company’s outstanding common stock. Dr. Zanganeh, the Company's Chief Operating Officer, also participated in the Company’s rights offering, purchasing a total of 389,077 shares of the Company’s common stock, par value $0.01, at a price of $5.24 per share. For further details related to the rights offering, see Note 12 Subsequent events.

On March 26, 2021, the Company entered into a Sublease with Maky Zanganeh and Associates, Inc. ("MZA") consisting of 4,500 square feet of office space at 2882 Sand Hill Road, Menlo Park, CA (the “Sublease”). The Sublease runs until September 2022, with monthly rent payments to MZA of $57,960 in the first six months and $59,670 for the remainder of the term of the Sublease. The rent payable under the terms of the Sublease is equivalent to the proportionate share of the rent payable by MZA to the third party landlord, based on the square footage of office space sublet by the Company, and no mark-up has been applied. During the three months ended March 31, 2021, no payments were made pursuant to the Sublease, however the Company accrued charges of $28,980.

12. Subsequent events

On April 20, 2021, Mr. Duggan entered into a Second Note Purchase Agreement pursuant to which he loaned the Company $55.0 million in exchange for the issuance by the Company of an unsecured promissory note in the amount of $55.0 million. Prior to entering into the Second Purchase Agreement, the Company determined, with Mr. Duggan’s agreement, to rescind both the Initial Purchase Agreement entered into with Mr. Duggan on March 24, 2021 and the Initial Note issued thereunder, and had repaid the principal amount under such note in full, without interest or penalty. For further details of the Initial and Second Notes and the rescission, see Note 11 Related party transactions.

On May 12, 2021, the Company closed its previously announced rights offering, which was fully subscribed. The Company received aggregate gross proceeds from the rights offering of $75.0 million from the sale of 14,312,976 shares of the Company’s common stock, par value $0.01, at a price per share of $5.24. Issuance costs associated with the rights offering were immaterial. In connection with the closing of the rights offering the Second Note matured and became due, and the Company repaid all principal and accrued interest thereunder using a portion of the proceeds of the rights offering.

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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 our unaudited consolidated financial statements and related notes included herein and our audited consolidated financial statements and related notes for the year ended December 31, 2020 included in our Form 10-K, filed on March 31, 2021. Some of the information contained in this discussion and analysis or set forth elsewhere in this filing, including information with respect to our plans and strategy for our business, includes forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, that involve risks and uncertainties. All statements other than statements relating to historical matters including statements to the effect that we “believe,” “expect,” “anticipate,” “plan,” “target,” “intend” and similar expressions should be considered forward-looking statements. As a result of many factors, including those factors set forth in the risks identified the “Risk Factors’’ section of our other filings with the Securities and Exchange Commission, or the SEC, our actual results could differ materially from the results, performance or achievements expressed in or implied by these forward-looking statements.

Company Overview

We are a biopharmaceutical company focused on the discovery, development and commercialization of novel antibiotics for serious infectious diseases. We are conducting a Phase 3 clinical program focused on the infectious disease C. difficile infection, or CDI. We are also seeking to expand our product candidate portfolio through the development of new mechanism, precision antibiotics using our proprietary Discuva Platform. Our lead CDI product candidate is ridinilazole (formerly SMT19969), an orally administered small molecule antibiotic.

To date, we have financed our operations primarily through issuances of our common stock (and before the Redomiciliation Transaction issuances of Summit Therapeutics plc’s ordinary shares and American Depositary Shares, or ADSs), payments to us under our license and commercialization agreement with Eurofarma Laboratórios SA, or Eurofarma, payments to us under our now-terminated license and collaboration agreement with Sarepta, and development funding and other assistance from government entities, philanthropic, non-government and not for profit organizations and patient advocacy groups for our product candidates. In particular, we have received funding from BARDA, CARB-X, Innovate UK, Wellcome Trust and a number of not for profit organizations.

We have devoted substantially all of our efforts to research and development, including clinical trials. We have not completed the development of any drugs. We expect to continue to incur significant expenses and increasing operating losses for at least the next several years. The net losses we incur may fluctuate significantly from quarter to quarter and year to year, due to the nature and timing of our research and development activities. We anticipate that our expenses will increase substantially in connection with conducting clinical trials for our lead product candidate, ridinilazole (formerly SMT19969), for the treatment of patients with CDI and seeking marketing approval for ridinilazole in the United States, as well as other geographies. In addition, if we obtain marketing approval of ridinilazole in the United States or other jurisdictions where we retain commercial rights, we expect to incur significant sales, marketing, distribution and outsourced manufacturing expenses, as well as ongoing research and development expenses.

Business Impact of COVID-19 Pandemic

In December 2019, an outbreak of respiratory illness caused by a novel coronavirus, commonly referred to as COVID-19, began in Wuhan, China and has now spread worldwide. On March 11, 2020, the World Health Organization declared the outbreak a global pandemic and public health emergency, and on March 13, 2020, the President of the United States declared the virus as a national emergency. In addition to those who have been directly affected, millions more have been affected by government efforts in the United States, the United Kingdom, the European Union and around the world to slow the spread of the pandemic through quarantines, travel restrictions, heightened border scrutiny and other measures. The pandemic and measures taken in response by governments, private industry, individuals and others have also had significant direct and indirect adverse impacts on businesses and commerce as supply chains have been disrupted; facilities and production have been suspended; and demand for certain goods and services has spiked, while demand for other goods and services has decreased significantly.

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The COVID-19 pandemic and measures taken to contain it have affected our business and operations in several ways. These include, but are not limited to, the following:

•A substantial portion of our employees are remote working. We have been unable to undertake certain activities directly at the same level as prior to the pandemic, including clinical trial visits and investigator meetings, with such activities being done remotely where possible. We have been relying on remote means of working and communication both internally and externally. We are continuing to monitor and support the health and well-being of our employees and their productivity as remote working continues.

•Certain of our clinical trial sites have suspended enrollment due to facility closures, reduced staff and operations, quarantine travel restrictions and other governmental restrictions. Additionally, we have experienced, and may continue to experience, patient enrollment at a slower pace at certain of our clinical trial sites than expected, which may result in increased clinical development costs.

•As a result of the slower pace of patient enrollment, our clinical supplies of ridinilazole and vancomycin manufactured for our Phase 3 clinical trials may not be utilized prior to their expiration and may need to be replaced. While we do not currently anticipate significant interruptions in our clinical supply chain, quarantines, travel restrictions and other measures may significantly impact the ability of employees of our third-party suppliers to get to their places of work to manufacture and deliver additional clinical supplies, which could cause the results from our clinical trials to be delayed even further and may increase the costs of our clinical trials.

•Many of our clinical trial sites have been operating with reduced staff and other restrictions. We have increased our efforts to engage with our clinical trial sites with a focus on retaining patients and maintaining scheduled visits and treatments, and where possible, instituted practices such as addition of home healthcare provider services for patients and remote monitoring.

The progression of the COVID-19 pandemic continues to evolve and its enduring impact on our business remains uncertain. There may be other material adverse impacts on our business, operations and financial condition that are unpredictable at this time, including delays in the development and regulatory approval of our product candidates and difficulties in retaining qualified personnel during the pandemic and once it subsides. The extent to which the pandemic may impact our business will depend on future developments, such as the duration of the pandemic, quarantines, travel restrictions and other measures in the United States, the United Kingdom, the European Union and around the world, business closures or business disruptions and the effectiveness of actions taken to contain the pandemic.

Results of Operations

Comparison of the Three Months Ended March 31, 2021 to the Three Months Ended March 31, 2020

The following table summarizes the results of our operations for the three months ended March 31, 2021 and 2020, together with the changes to those items:

	Three Months Ended March 31,				Change March 31, 2021 vs. March 31, 2020
	2021		2020		Increase/(Decrease)
	(in thousands, except percentages)
Revenue	192		324		$	(132)	(40.7)	%
Operating expenses
Research and development	(18,379)		(12,912)		(5,467)		(42.3)
General and administrative	(4,185)		(3,572)		(613)		(17.2)
Total operating expenses	(22,564)		(16,484)		(6,080)		(36.9)
Other operating income	5,449		6,820		(1,371)		(20.1)
Operating loss	(16,923)		(9,340)		(7,583)		(81.2)
Other income (expense), net	(565)		3,261		(3,826)		117.3
Loss before income taxes	(17,488)		(6,079)		(11,409)		(187.7)
Income tax expense	—		(55)		55		(100.0)
Net loss	$	(17,488)	$	(6,134)	$	(11,354)	(185.1)	%

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Revenue

Revenue was $0.2 million for the three months ended March 31, 2021, compared to $0.3 million for the three months ended March 31, 2020. The Company's revenue in these periods relates wholly to the receipt of a $2.5 million upfront payment and $1.0 million enrollment milestone payment received in respect of the license and commercialization agreement signed with Eurofarma in December 2017.

Other Operating Income

Other operating income was $5.4 million for the three months ended March 31, 2021, as compared to $6.8 million for the three months ended March 31, 2020.

The Company recognized other operating income from the BARDA contract of $1.8 million during the three months ended March 31, 2021, as compared to $4.9 million during the three months ended March 31, 2020. This decrease of $3.1 million is due to reaching the funding limit on certain work segments of the contract, this decrease is partially offset by an increase in U.K. Research and Development Expenditure Credits. During the three months ended March 31, 2021, $3.7 million was recognized in respect of U.K. Research and Development Expenditure Credits for the three months ended March 31, 2021 as compared to $1.8 million for the three months ended March 31, 2020. This increase of $1.9 million is due primarily to additional research and development expenses incurred during the three months ended March 31, 2021 that were not funded by third parties.

Operating Expenses

Research and Development Expenses

The table below summarizes our research and development expenses by category. Our CDI program expenses and antibiotic pipeline development activities include costs paid to contract research organizations, manufacturing costs for our clinical trials and laboratory testing costs and research related expenses. Other research and development costs include staff and travel costs (including those of our internal CDI and antibiotic development teams), research and development related legal costs, patent registration fees, an allocation of facility-related costs and other non-core program related expenses.

	Three Months Ended March 31,
	2021		2020
CDI program	$	12,983	$	9,510
Antibiotic pipeline research and development costs	149		560
Other research and development costs	5,247		2,842
Total	$	18,379	$	12,912

Research and development expenses increased by $5.5 million to $18.4 million for the three months ended March 31, 2021, from $12.9 million for the three months ended March 31, 2020. This was due to increased expenditure related to our CDI program, and research and development related staffing and facilities costs, offset by decreased expenditure related to the antibiotic pipeline development activities.

Investment in the CDI program increased by $3.5 million to $13.0 million for the three months ended March 31, 2021, from $9.5 million for the three months ended March 31, 2020. This increase primarily related to clinical and manufacturing activities associated with the Phase 3 clinical trials of ridinilazole that commenced in February 2019.

Investment in antibiotic pipeline development activities was $0.1 million for the three months ended March 31, 2021, compared to $0.6 million for the three months ended March 31, 2020. This decrease primarily related to the decision not to advance the DDS-01 series of antibiotics and to cease work on the gonorrhea program.

Other research and development expenses increased by $2.4 million to $5.2 million during the three months ended March 31, 2021, as compared to $2.8 million during the three months ended March 31, 2020. This was primarily due to an increase in staff and facilities costs related to the CDI program.

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General and Administrative Expenses

General and administrative expenses increased by $0.6 million to $4.2 million for the three months ended March 31, 2021, from $3.6 million for the three months ended March 31, 2020. This increase primarily related to increased support staff related costs.

Other income (expense), net

Other expense, net was $0.6 million for the three months ended March 31, 2021, which primarily consisted of a foreign currency loss of $0.5 million. Other income, net was $3.3 million for the three months ended March 31, 2020, which primarily consisted of a foreign currency gain of $3.3 million.

Income tax expense

The income tax expense for the three months ended March 31, 2021 was $nil as compared to $0.1 million for the three months ended March 31, 2020. The Company's income tax expense during the first quarter of 2020 relates to the Company's U.S. corporate taxation due in relation to the U.S. tax resident trading entity. The Company has recorded a full valuation allowance against its deferred tax assets in excess of our deferred tax liabilities, as the deferred tax liability represents future reversals of existing taxable temporary differences.

Liquidity and Capital Resources

Sources of liquidity

To date, we have financed our operations primarily through issuances of our common stock (and before the Redomiciliation Transaction issuances of Summit Therapeutics plc’s ordinary shares and American Depositary Shares, or ADSs), payments to us under our former license and collaboration agreement with Sarepta and our license and commercialization agreement with Eurofarma and development funding and other assistance from government entities, philanthropic, non-government and not for profit organizations and patient advocacy groups for our product candidates. In particular, we have received funding from BARDA, CARB-X, Innovate UK, Wellcome Trust and a number of not for profit organizations.

In January 2019, we received net proceeds of $24.4 million from the issuance and sale of 15,625,000 shares of common stock to a single investor, Mr. Robert W. Duggan. In December 2019, we received net proceeds of $49.1 million from the issuance and sale of 35,075,690 shares of common stock to three existing investors. As part of the equity placing, the participating investors were granted warrants with the right to subscribe for 5,261,353 new shares of common stock at an exercise price of $1.58 per share. On November 6, 2020, we received net proceeds of $50.0 million from the issuance and sale of 14,970,060 shares of common stock to three existing investors. Following the issuance of an unsecured promissory note on March 24, 2021, we received net proceeds of $55.0 million. Such note was later repaid without interest or penalty, rescinded and replaced by a new note on April 20, 2021, pursuant to a second unsecured promissory note we received net proceeds of $55.0 million. Subsequently, on May 12, 2021, the Company received proceeds of $75.0 million in the aggregate from the sale of 14,312,976 shares of Common Stock at a price per share of $5.24 in the Company’s rights offering, the proceeds of which were used in part to repay amounts outstanding on the second unsecured promissory note.

Funding requirements

Since our inception, we have incurred significant operating losses. We anticipate that we will continue to incur losses for at least the next several years. We expect that our research and development and general and administrative expenses will continue to increase in connection with conducting clinical trials for our lead product candidate, ridinilazole, for the treatment of CDI, conducting preclinical research and development activities and seeking marketing approval for ridinilazole in the United States as well as other geographies where we retain commercialization rights. In addition, our expenses will increase if and as we:

•continue the research and development of ridinilazole, as well as our early-stage programs targeting infections caused by Enterobacteriaceae;

•seek to identify and develop additional future product candidates, including through our bacterial genetics-based Discuva Platform for the discovery and development of new mechanism antibiotics, and specifically our research activities against a group of bacteria that collectively are known as the ESKAPE pathogens;

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•seek marketing approvals for any product candidates that successfully complete clinical development;

•ultimately establish a sales, marketing and distribution infrastructure in jurisdictions where we have retained commercialization rights and scale up external manufacturing capabilities to commercialize any product candidates for which we receive marketing approval;

•acquire or in-license other product candidates and technology;

•maintain, expand and protect our intellectual property portfolio;

•hire additional clinical, regulatory and scientific personnel;

•expand our physical presence; and

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

As of March 31, 2021, we had cash and cash equivalents of $102.2 million. We believe that our existing cash resources, funding agreements, research and development tax credits receivable and the net proceeds of the rights offering, will be sufficient to enable us to fund our current operating plans until the fourth quarter of 2022. While these capital resources have allowed us to conduct our two Phase 3 clinical trials of ridinilazole, we do not expect to be able to complete all activities associated with these trials without additional capital. Our failure to obtain sufficient funds on acceptable terms when needed could have a material adverse effect on our business, results of operations and financial condition.

We have based the foregoing estimate on assumptions that may prove to be wrong, and we could use our capital resources sooner than we currently expect. This estimate assumes, among other things, that we do not obtain any additional funding through grants and clinical trial support or through new collaboration arrangements. Our future capital requirements will depend on many factors, including:

•the progress, costs and results of clinical trials of ridinilazole for CDI;

•the number and development requirements of other future product candidates that we pursue;

•the costs, timing and outcome of regulatory review of ridinilazole and our other product candidates we develop;

•the costs and timing of commercialization activities, including product sales, marketing, distribution and manufacturing, for any of our product candidates that receive marketing approval;

•subject to receipt of marketing approval, revenue received from commercial sales of ridinilazole or any other product candidates;

•the costs and timing of preparing, filing and prosecuting patent applications, maintaining and protecting our intellectual property rights and defending against any intellectual property-related claims;

•our contract with BARDA and whether BARDA elects to pursue its final designated option beyond the base period and two exercised options;

•the amounts we receive from Eurofarma under our license and commercialization agreement, including for the achievement of development, commercialization and sales milestones and for product supply transfers;

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

•the extent to which we acquire or invest in other businesses, products and technologies;

•the rate of the expansion of our physical presence;

•the extent to which we change our physical presence; and

•the costs of operating as a domestic issuer in the United States following the Redomiciliation Transaction.

Until such time, if ever, as we can generate substantial product revenues, we expect to finance our cash needs through a combination of some, or all, of the following: equity and debt offerings, collaborations, strategic alliances, grants and clinical trial support from government entities, philanthropic, non-government and not-for-profit organizations and patient advocacy groups, and marketing, distribution or licensing arrangements. We do not have any committed external source of funds other than amounts we may receive from BARDA and Eurofarma under our arrangements with them and our research and development tax credits receivable. As a result, we will need additional capital to fund our operations. Additional capital, when needed, may not be available to us on acceptable terms, or at all. To the extent that we raise additional capital through the sale of equity or convertible debt securities, the ownership interest of our existing stockholders will be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect the rights of our existing stockholders. Debt financing, if available, may involve agreements that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends or other distributions. If we raise additional funds through collaborations, strategic alliances or marketing, distribution or licensing arrangements with third parties, we may have to relinquish valuable rights to our technologies, future revenue streams, research programs or product candidates or to grant licenses on terms that may not be favorable to us. If we are unable to raise additional funds through equity or debt financings or other arrangements 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 product candidates that we would otherwise prefer to develop and market ourselves.

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Cash Flows

The following table summarizes the results of our cash flows for the three months ended March 31, 2021 and 2020:

	2021		2020
	(in thousands)
Net cash used in operating activities	(20,669)		(4,959)
Net cash used in investing activities	(39)		(194)
Net cash provided by financing activities	55,897		3
Effect of exchange rates on cash and cash equivalents	588		(3,749)
Net change in cash and cash equivalents	$	35,777	$	(8,899)

Operating Activities

Net cash used in operating activities for the three months ended March 31, 2021, was $20.7 million, consisting primarily of operating costs of $21.3 million, offset by $0.6 million received from licensing agreements and funding arrangements. Net loss of $17.5 million for the three months ended March 31, 2021 included net $3.2 million of non-cash items. Significant non-cash items include stock-based compensation expense of $0.9 million, net unrealized foreign exchange gains of $1.7 million and depreciation and amortization expense of $0.5 million. The significant items in the change in operating assets and liabilities that impacted our use of cash in operations were an increase in research and development tax credit receivable of $3.7 million, an increase in accrued liabilities of $2.1 million, a decrease in accounts payable of $2.1 million, a decrease in prepaid expenses of $1.6 million and a decrease in deferred revenue and income of $1.2 million.

Net cash used in operating activities for the three months ended March 31, 2020, was $5.0 million, consisting primarily of operating costs of $10.6 million, offset by $5.6 million received from licensing agreements and funding arrangements. Net loss of $6.1 million for the three months ended March 31, 2020 included net $1.2 million of non-cash items. Significant non-cash items include depreciation and amortization expense of $0.5 million and stock-based compensation expense of $0.3 million. The significant items in the change in operating assets and liabilities that impacted our use of cash in operations were an increase in research and development tax credit receivable of $1.6 million, and increase in accounts receivable of $1.2 million, and increase in accounts payable of $2.7 million and an increase in deferred revenue and income of $1.7 million.

Investing Activities

Net cash outflow in investing activities for the three months ended March 31, 2021, was $39 thousand compared to $0.2 million for the three months ended March 31, 2020. Net cash outflow from investing activities represented amounts paid to acquire property, plant and equipment and intangible assets.

Financing Activities

Net cash inflow from financing activities for the three months ended March 31, 2021, included proceeds from the promissory note from a related party of $55.0 million and the exercise of stock options of $0.9 million.

Critical Accounting Policies and Significant Judgments and Estimates

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

Our significant accounting policies are described in Note 3 to our audited consolidated financial statements included in our Annual Report on Form 10-K, filed with the Securities and Exchange Commission on March 31, 2021. There have been no changes to our critical accounting policies and estimates since the date of issuance of those audited financial statements.

22

Contractual obligations and commitments

The following table summarizes our contractual obligations as of March 31, 2021.

	Payment due by period
	Total		Less that 1 year		Between 1 and 3 years		Between 3 and 5 years		More that 5 years
	(in thousands)
Operating lease obligations	$	1,422	$	1,064	$	358	$	—	$	—

The preceding table excludes contingent payment obligations which primarily consist of commitments under our agreements with the Wellcome Trust, the University College London and certain employees, former employees and former directors of Discuva, pursuant to which we will be required to pay royalties or make milestone payments. As of March 31, 2021, we were unable to estimate the amount, timing or likelihood of achieving the milestones or making future product sales that these contingent payment obligations relate to. For additional information regarding these agreements, see “Business - Our Collaborations and Funding Arrangements” in our Annual Report on Form 10-K, filed on March 31, 2021.

Additionally, we enter into contracts in the normal course of business with various third parties for clinical trials, preclinical research studies and testing, manufacturing and other services and products for operating purposes. These contracts generally provide for termination upon notice, and therefore are cancellable contracts and not included in the table of contractual obligations and commitments.

Off-Balance Sheet Arrangements

Other than the contractual obligations and commitments described above, we did not have during the periods presented, and we do not currently have, any off‑balance sheet arrangements, as defined in the rules and regulations of the Securities and Exchange Commission.

Recent Accounting Pronouncements

For a discussion of recent accounting pronouncements, please see Note 2 of Notes to Consolidated Financial Statements included herein.

Item 3. Quantitative and Qualitative Disclosures About Market Risk.

Not applicable.

Item 4. Controls and Procedures.

We have carried out an evaluation of the effectiveness of the design and operation of our disclosure controls and procedures (as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) under the supervision and the participation of the company’s management, which is responsible for the management of the internal controls, and which includes our Chief Executive Officer (our principal executive officer) and our Chief Financial Officer (our principal financial officer). The term “disclosure controls and procedures,” as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, means controls and other procedures of a company that are designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Securities Exchange Act of 1934 is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Securities Exchange Act of 1934 is accumulated and communicated to the company’s management, including its principal executive and principal financial officers, as appropriate to allow timely decisions regarding required disclosure. There are inherent limitations to the effectiveness of any system of disclosure controls and procedures, including the possibility of human error and the circumvention or overriding of the controls and procedures. Accordingly, even effective disclosure controls and procedures can only provide reasonable assurance of achieving their control objectives. Based upon our evaluation of our disclosure controls and procedures as of March 31, 2021 our Chief Executive Officer and Chief Financial Officer concluded that, as of such date, our disclosure controls and procedures were effective at a reasonable level of assurance.

23

PART II - OTHER INFORMATION

Item 1. Legal Proceedings.

We are not currently subject to any material legal proceedings.

Item 1A. Risk Factors.

There have been no material changes from our risk factors described in our current report on Form 10-K, filed with the Securities and Exchange Commission on March 31, 2021. The risks referenced above are not the only risks facing our Company. Additional risk and uncertainties not currently known to us or that we currently deem to be immaterial also may materially adversely affect our business, financial condition and/or operating results

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

None.

Item 3. Defaults Upon Senior Securities.

None.

Item 4. Mine Safety Disclosures.

None.

Item 5. Other Information.

None.

24

Item 6. Exhibits.

Exhibit Index

Exhibit No.	Description
31.1*	Certification of Chief Executive Officer pursuant to Securities Exchange Act Rules 13a-14(a) and 15d-14(a) as adopted pursuant to §302 of the Sarbanes-Oxley Act of 2002
31.2*	Certification of Chief Financial Officer pursuant to Securities Exchange Act Rules 13a-14(a) and 15d-14(a) as adopted pursuant to §302 of the Sarbanes-Oxley Act of 2002
32.1*	Certification of Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002 of Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002
101.SCH*	XBRL Taxonomy Extension Schema Document
101.CAL*	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF*	XBRL Taxonomy Extension Definition Linkbase Document
101.LAB*	XBRL Taxonomy Extension Label Linkbase Document
101.PRE*	XBRL Taxonomy Extension Presentation Linkbase Document
104*	Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)

* Filed herewith.

25

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.

Date: May 17, 2021	SUMMIT THERAPEUTICS INC.
	By:	/s/ Robert W. Duggan
	Name:	Robert W. Duggan
	Title	Chief Executive Officer; Executive Chairman
	By:	/s/ Michael Donaldson
	Name:	Michael Donaldson
	Title	Chief Financial Officer

26

EX-31.1

Exhibit 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

I, Robert Duggan, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Summit Therapeutics Inc. (the “Company”);

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the Company as of, and for, the periods presented in this report;

4.The Company’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the Company 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 Company, 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 Company’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 Company’s internal control over financial reporting that occurred during the Company's most recent fiscal quarter (the Company's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting; and

5.The Company’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Company’s auditors and the audit committee of the Company’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 Company’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 Company’s internal control over financial reporting.

Date: May 17, 2021

By:	/S/ Robert Duggan
	Name:	Robert Duggan
	Title:	Chief Executive Officer
		(Principal Executive Officer)

EX-31.2

Exhibit 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

I, Michael Donaldson, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Summit Therapeutics Inc. (the “Company”);

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the Company as of, and for, the periods presented in this report;

4.The Company’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the Company 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 Company, 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 Company’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 Company’s internal control over financial reporting that occurred during the Company's most recent fiscal quarter (the Company's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting; and

5.The Company’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Company’s auditors and the audit committee of the Company’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 Company’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 Company’s internal control over financial reporting.

Date: May 17, 2021

By:	/s/ Michael Donaldson
	Name:	Michael Donaldson
	Title:	Chief Financial Officer
		(Principal Financial Officer)

EX-32.1

Exhibit 32.1

CERTIFICATION OFPRINCIPAL EXECUTIVE OFFICER AND PRINCIPAL FINANCIAL OFFICER PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of Summit Therapeutics Inc. (the “Company”) for the period ended March 31, 2021, as filed with the U.S. Securities and Exchange Commission on the date hereof (the “Report”), the undersigned Robert Duggan, as Chief Executive Officer of the Company, and Michael Donaldson, as Chief Financial Officer of the Company, each hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of his or her knowledge:

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

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

Date: May 17, 2021

By:	/s/ Robert Duggan
	Name:	Robert Duggan
	Title:	Chief Executive Officer
		(Principal Executive Officer)
By:	/s/ Michael Donaldson
	Name:	Michael Donaldson
	Title:	Chief Financial Officer
		(Principal Financial Officer)

XML

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2021	May 12, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2021
Document Transition Report	false
Entity File Number	001-36866
Entity Registrant Name	Summit Therapeutics Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	37-1979717
Entity Address, Address Line One	One Broadway, 14th Floor
Entity Address, City or Town	Cambridge
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	02142
City Area Code	617
Local Phone Number	514-7149
Title of 12(b) Security	Common Stock, $0.01 par value per share
Trading Symbol	SMMT
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		97,244,567
Entity Central Index Key	0001599298
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Amendment Flag	false

XML

Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 102,194	$ 66,417
Accounts receivable	447	331
Prepaid expenses	7,995	9,547
Other current assets	985	1,523
Research and development tax credit receivables	13,596	9,856
Total current assets	125,217	87,674
Property and equipment, net	684	725
Right-of-use assets	1,487	554
Goodwill	2,047	2,030
Intangible assets, net	11,359	11,515
Total assets	140,794	102,498
Current liabilities:
Accounts payable	4,114	6,140
Accrued expenses	4,915	4,261
Other current liabilities	581	729
Lease liabilities	1,056	390
Deferred revenue and income	7,423	8,370
Promissory note payable to a related party	54,963	0
Total current liabilities	73,052	19,890
Deferred revenue and income	383	569
Lease liabilities	351	75
Other non-current liabilities	2,603	2,511
Total liabilities	76,389	23,045
Commitments and contingencies
Stockholders' equity:
Common stock, $0.01 par value: 250,000,000 shares authorized; 82,919,522 and 82,575,064 shares issued and outstanding at March 31, 2021 and December 31, 2020, respectively	829	826
Additional paid-in capital	295,129	293,367
Accumulated other comprehensive loss	(3,119)	(3,794)
Accumulated deficit	(228,434)	(210,946)
Total stockholders' equity	64,405	79,453
Total liabilities and stockholders' equity	$ 140,794	$ 102,498

XML

Unaudited Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Common stock par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	250,000,000	250,000,000
Common stock, shares issued (in shares)	82,919,522	82,575,064
Common stock, shares outstanding (in shares)	82,919,522	82,575,064

XML

Unaudited Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement And Statement Of Comprehensive Income [Abstract]
Revenue	$ 192	$ 324
Operating expenses:
Research and development	18,379	12,912
General and administrative	4,185	3,572
Total operating expenses	22,564	16,484
Other operating income	5,449	6,820
Operating loss	(16,923)	(9,340)
Other income (expense), net	(565)	3,261
Loss before income tax expense	(17,488)	(6,079)
Income tax expense	0	(55)
Net loss	$ (17,488)	$ (6,134)
Loss per share:
Basic (in dollars per share)	$ (0.21)	$ (0.09)
Diluted (in dollars per share)	$ (0.21)	$ (0.09)
Weighted-average shares used to compute loss per share:
Basic (in shares)	82,817,836	67,217,701
Diluted (in shares)	82,817,836	67,217,701
Other comprehensive income / (loss):
Change in foreign currency translation adjustment	$ 675	$ (4,624)
Comprehensive loss	$ (16,813)	$ (10,758)

XML

Unaudited Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Total Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2019		67,178,054
Beginning balance at Dec. 31, 2019	$ 78,863	$ 672	$ 241,204	$ (4,764)	$ (158,249)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance on common stock from exercise of stock options (in shares)		53,846
Issuance of common stock from exercise of stock options	3		3
Stock-based compensation	297		297
Foreign currency translation adjustment	(4,624)			(4,624)
Net loss	(6,134)				(6,134)
Ending balance (in shares) at Mar. 31, 2020		67,231,900
Ending balance at Mar. 31, 2020	$ 68,405	$ 672	241,504	(9,388)	(164,383)
Beginning balance (in shares) at Dec. 31, 2020	82,575,064	82,575,064
Beginning balance at Dec. 31, 2020	$ 79,453	$ 826	293,367	(3,794)	(210,946)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance on common stock from exercise of stock options (in shares)	317,535	344,458
Issuance of common stock from exercise of stock options	$ 897	$ 3	894
Stock-based compensation	868		868
Foreign currency translation adjustment	675			675
Net loss	$ (17,488)				(17,488)
Ending balance (in shares) at Mar. 31, 2021	82,919,522	82,919,522
Ending balance at Mar. 31, 2021	$ 64,405	$ 829	$ 295,129	$ (3,119)	$ (228,434)

XML

Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$ (17,488)	$ (6,134)
Adjustments to reconcile net loss to net cash used in operating activities:
Non-cash interest expense	103	66
Unrealized foreign exchange gain	(1,719)	75
Depreciation of operating right-of-use assets	152	112
Depreciation	80	72
Amortization of intangible assets	255	266
Stock-based compensation	868	297
Change in operating assets and liabilities:
Accounts receivable	(114)	(1,246)
Prepaid expenses	1,638	(472)
Other current assets	549	33
Research and development tax credit receivable	(3,661)	(1,645)
Deferred revenue and income	(1,200)	1,727
Accounts payable	(2,082)	2,696
Accrued liabilities	2,102	(745)
Lease liabilities	(152)	(61)
Net cash used in operating activities	(20,669)	(4,959)
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of property and equipment	(39)	(30)
Purchase of intangible assets	0	(164)
Net cash used in investing activities	(39)	(194)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from related party promissory note	55,000	0
Proceeds from exercise of stock options	897	3
Net cash provided by financing activities	55,897	3
Effect of exchange rates on cash and cash equivalents	588	(3,749)
Increase / (decrease) in cash and cash equivalents	35,777	(8,899)
Cash and cash equivalents at beginning of the period	66,417	63,842
Cash and cash equivalents at end of the period	102,194	54,943
Supplemental Disclosure of Cash Flow Information
Cash paid for income taxes	0	6
Debt issuance costs in accrued expenses	$ 38	$ 0

XML

Nature of the business and operations

3 Months Ended

Mar. 31, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Nature of the business and operations

Nature of the business and operations

Summit Therapeutics Inc. ("Summit" or the "Company") is a biopharmaceutical company focused on the discovery, development and commercialization of novel antibiotics for serious infectious diseases. Summit is conducting a Phase 3 clinical program focused on the infectious disease C. difficile infection, or CDI. It is also seeking to expand the product candidate portfolio through the development of new mechanism, precision antibiotics using the proprietary Discuva Platform.

On September 18, 2020, Summit, a Delaware corporation, became the successor issuer to Summit Therapeutics plc, a public limited company incorporated under the laws of England and Wales with the Registrar of Companies of England and Wales, United Kingdom, for certain purposes under both the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, or the Exchange Act. Such succession occurred pursuant to a statutory scheme of arrangement under U.K. law pursuant to which all Summit Therapeutics plc outstanding ordinary shares were exchanged on a five-for-one basis for newly issued shares of Summit common stock and Summit became the holding company of Summit Therapeutics plc (the predecessor registrant and former holding company) and its subsidiaries, which is referred to as the Redomiciliation Transaction. Concurrently, Summit Therapeutics plc was converted into a private limited company under the laws of England and Wales and renamed Summit Therapeutics Limited. In addition, the warrants and stock options to purchase shares of Summit Therapeutics plc were canceled and replacement warrants and stock options to purchase common stock in Summit Therapeutics Inc. were issued. The scheme of arrangement was accounted for as an exchange of equity interests among entities under common control. All assets and liabilities of Summit Therapeutics plc were assumed by Summit, resulting in the retention of the historical basis of accounting as if they had always been combined for accounting purposes and the historical consolidated financial statements of Summit Therapeutics plc became the historical consolidated financial statements of Summit Therapeutics Inc. All share and per share amounts for periods prior to the Redomiciliation Transaction in the financial statements have been retroactively reflected to be presented in shares of our common stock, par value $0.01 per share.

XML

Basis of presentation and summary of significant accounting policies

3 Months Ended

Mar. 31, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of presentation and summary of significant accounting policies

Basis of presentation and summary of significant accounting policies

The accompanying unaudited interim consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States ("GAAP") and pursuant to the rules and regulations of the U.S. Securities and Exchange Commission. Accordingly, certain information and disclosures required by GAAP for complete consolidated financial statements are not included herein. These unaudited interim consolidated financial statements should be read in conjunction with the audited financial statements and notes thereto of Summit Therapeutics Inc. and its consolidated subsidiaries (the "Company") which are included in the Annual Report on Form 10-K, filed on March 31, 2021.

In the opinion of management, the accompanying unaudited condensed consolidated financial statements contain all adjustments, consisting of a normal recurring nature, necessary for a fair statement of its financial position as of March 31, 2021, and its results of operations for the three months ended March 31, 2021 and 2020, and cash flows for the three months ended March 31, 2021 and 2020. The balance sheet at December 31, 2020, was derived from audited annual financial statements but does not contain all of the footnote disclosures from the annual financial statements. The results of the period are not necessarily indicative of full year results or any other interim period. The financial results of the Company's activities are reported in U.S. dollars (“USD”).

Certain prior period amounts within the consolidated statements of operations and comprehensive (loss) income for the three months ended March 31, 2020 have been reclassified to conform to the current period presentation. Specifically, a foreign currency gain of $3.3 million previously included as part of total operating expenses within general and administrative expenses has been reclassified to be presented as part of other income (expense), net and expenses of $0.4 million previously reported as general and administration expenses are now presented as research and development expenses in conformity with the current period presentation.

During the quarter ended December 31, 2020, the Company identified a deferred tax asset relating to the acquired carried forward tax losses arising from the acquisition of Discuva Limited in December 2017 that was not included as part of the business combination accounting. Furthermore, the Company identified deferred tax assets relating to available carried forward group tax losses arising as a result of the acquisition of Discuva Limited in December 2017 that were not included in

the Company's subsequent balances sheets. As a result, in the Company's previously issued March 31, 2020 financial statements, the Company incorrectly recognized $0.4 million of goodwill and omitted the inclusion of deferred tax assets of $1.9 million in the balance sheet as of March 31, 2020. Since the Company's deferred tax liabilities and deferred tax assets both arise in the U.K. tax jurisdiction, accordingly these are offset on the consolidated balance sheet. The Company records a full valuation allowance against the deferred tax assets in excess of the deferred tax liabilities, as the deferred tax liability represents future reversals of existing taxable temporary differences. The impact of these errors on net (loss) income was a deferred tax benefit of $0.2 million the three months ended March 31, 2020. The misstatement had no net impact on the Company’s consolidated statements of cash flows. Management concluded that the correction was not material to previously issued consolidated financial statements. Since these errors were not material to any previously issued annual or interim financial statements, no amendments to previously filed financial statements were required. Consequently, the Company has corrected for these errors by revising the March 31, 2020 balances herein and the annual financial statements on the Company's Form 10-K, filed on March 31, 2021.

Use of Estimates

The preparation of the consolidated financial statements in conformity with U.S. GAAP requires the use of estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Impact of COVID-19

During the first quarter of 2020, there was a global outbreak of a novel coronavirus, or COVID-19, which was subsequently declared as a pandemic by the World Health Organization. The global impact of the outbreak rapidly evolved, triggering a period of global economic slowdown. The rapid development and fluidity of this situation precludes any prediction as to the ultimate adverse impact of COVID-19 on economic and market conditions.

Management believes the estimates and assumptions underlying our unaudited interim consolidated financial statements are reasonable and supportable based on the information available as of March 31, 2021, however uncertainty over the ultimate impact COVID-19 will have on the global economy generally makes any estimates and assumptions as of March 31, 2021 inherently less certain than they would be absent the current and potential impacts of COVID-19. Actual results may ultimately differ from those estimates.

Recently adopted accounting standards

In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740), Simplifying the Accounting for Income Taxes. The amendments in this ASU are intended to simplify the accounting for income taxes by removing certain exceptions to the general principles in Topic 740. The amendments are also intended to improve consistent application of and simplify GAAP for other areas of Topic 740 by clarifying and amending existing guidance. This ASU became effective for the Company on January 1, 2021. The adoption of this update did not have a material impact on the Company’s consolidated financial statements.

Recent accounting standards not yet adopted

In January 2017, the FASB issues ASU 2017-04, Intangibles - Goodwill and Other (Topic 350). This update simplifies the accounting for goodwill impairments by removing the requirement to determine the fair value of individual assets and liabilities in order to calculate a reporting unit’s “implied” goodwill under the current guidance. This update will be effective for the Company for fiscal years beginning after December 15, 2022. The adoption of this update is not expected to have a material impact on the Company’s consolidated financial statements.

Other recent authoritative guidance issued by the FASB (including technical corrections to the FASB ASC), the American Institute of Certified Public Accountants, and the SEC did not, or are not expected to have a material impact on the Company's consolidated financial statements.

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Going concern

3 Months Ended

Mar. 31, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Going concern

Going concern The accompanying consolidated financial statements are prepared assuming the Company will continue as a going concern, which contemplates the realization of assets and satisfaction of liabilities in the normal course of the business. As of March 31, 2021, the Company had cash and cash equivalents of $102.2 million and an accumulated deficit of $228.4 million. During

the three months ended March 31, 2021, the Company incurred a net loss of $17.5 million and used $20.7 million of cash in operating activities. The Company expects to continue to generate operating losses for the foreseeable future. Until such time as the Company can generate substantial revenue and achieve profitability, the Company will need to raise additional capital.

On May 12, 2021, the Company closed its previously announced rights offering, which was fully subscribed. The Company received aggregate gross proceeds from the rights offering of $75.0 million from the sale of 14,312,976 shares of the Company’s common stock, par value $0.01, at a price per share of $5.24. In connection with the closing of the rights offering, the unsecured promissory note of $55.0 million received from Mr. Duggan on April 20, 2021, matured and became due, and the Company repaid all principal and accrued interest thereunder using a portion of the proceeds of the rights offering. The Company's existing cash resources, funding agreements, research and development tax credits receivable and the net proceeds of the rights offering, are expected to be sufficient to enable the Company to fund its current operating plans until the fourth quarter of 2022.

The Company continues to evaluate options to further finance its cash needs through a combination of some, or all, of the following: equity and debt offerings, collaborations, strategic alliances, grants and clinical trial support from government entities, philanthropic, non-government and not-for-profit organizations and patient advocacy groups, and marketing, distribution or licensing arrangements. While the Company believes that funds would be available in this manner before the fourth quarter of 2022, there can be no assurance that the Company will be able to generate funds, on terms acceptable to the Company, on a timely basis or at all, which would impact the Company’s ability to continue as a going concern.

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Segment reporting

3 Months Ended

Mar. 31, 2021

Segment Reporting [Abstract]

Segment reporting

Segment reporting

The Company's chief operating decision maker, the Company’s Chief Executive Officer and Chief Operating Officer, views the Company’s operations and manages its business as a single reportable operating segment. The Company's single operating segment covers the Company’s research and development activities, primarily comprising the C. difficile infection ("CDI") program and antibiotic pipeline research activities. Since the Company operates in one operating segment, all required financial segment information can be found in the condensed consolidated financial statements.

The Company operates in two geographic regions: the United Kingdom and the United States. Substantially all of the Company's long-lived assets are held in the United Kingdom.

For details of revenue from external customers by geography refer to Note 5.

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Revenue

3 Months Ended

Mar. 31, 2021

Revenue from Contract with Customer [Abstract]

Revenue

Revenue

	Three Months Ended March 31,
	2021		2020
Analysis of revenue by category:	(in thousands)
Licensing agreements	$	192	$	324
	$	192	$	324

Revenue recognized in the period consists only of amounts received from the license and commercialization agreement with Eurofarma Laboratórios S.A.

	Three Months Ended March 31,
	2021		2020
Analysis of revenue by geography:	(in thousands)
Latin America	$	192	$	324
	$	192	$	324

The analysis of revenue by geography has been identified on the basis of the customer’s geographical location.

Eurofarma Laboratórios S.A.

On December 21, 2017, Summit announced it had entered into an exclusive license and commercialization agreement with Eurofarma Laboratórios S.A. ("Eurofarma"), pursuant to which the Company granted Eurofarma the exclusive right to commercialize ridinilazole in specified countries in South America, Central America and the Caribbean. The Company has retained commercialization rights in the rest of the world.

Under the terms of the license and commercialization agreement with Eurofarma, the Company received an upfront payment of $2.5 million from Eurofarma in December 2017. In February 2020, the Company reached the first enrollment milestone and received $1.0 million. The terms of the contract have been assessed under ASC 606 and currently only the upfront payment and the first enrollment milestone payment are included in the transaction price. These payments were initially reported as deferred revenue in the balance sheet and are being recognized as revenue ratably over the performance period.

For the three months ended March 31, 2021 the Company recognized $0.2 million of revenue and $0.3 million for the three months ended March 31, 2020, which related to the upfront payment and the first enrollment milestone in accordance with the Company's revenue recognition policy. The revenue is being recognized ratably over the performance period to reflect the transfer of control to the customer occurring over the time period that the research and development services are provided by the Company, and this output method is, in management’s judgment, the best measure of progress towards satisfying the performance obligation.

In addition, the Company will be entitled to receive an additional $2.75 million in development milestones upon the achievement of staged patient enrollment targets in the licensed territory in one of the two planned Phase 3 clinical trials of ridinilazole. The Company is eligible to receive up to $21.4 million in development, commercial and sales milestones when cumulative net sales equal or exceed $100.0 million in the Eurofarma licensed territory. Each subsequent achievement of an additional $100.0 million in cumulative net sales will result in the Company receiving additional milestone payments, which, when combined with anticipated product supply transfer payments from Eurofarma paid to the Company in connection with a commercial supply agreement to be entered into between the two parties, will provide payments estimated to range from a mid-teens to high-teens percentage of cumulative net sales in the Eurofarma licensed territory. The Company estimates such product supply transfer payments from Eurofarma will range from a high single-digit to low double-digit percentage of cumulative net sales in the licensed territory.

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Other operating income

3 Months Ended

Mar. 31, 2021

Other Income and Expenses [Abstract]

Other operating income

Other operating income

	Three Months Ended March 31,
	2021		2020
Analysis of other operating income by category:	(in thousands)
Income recognized in respect of BARDA	$	1,770	$	4,949
Research and development credits	3,679		1,764
Grant income	—		107
	$	5,449	$	6,820

BARDA

In September 2017, the Company was awarded a funding contract from the Biomedical Advanced Research and Development Authority ("BARDA"), an agency of the US government's Department of Health and Human Services' Office of the Assistant Secretary for Preparedness and Response, to fund a specified portion of the clinical and regulatory development activities of ridinilazole for the treatment and reduction of recurrence of CDI.

Under the terms of this contract, the Company was initially eligible to receive base period funding of $32 million. In addition, the contract included three option work segments that, if exercised in full by BARDA, would increase the total federal government funding under the contract to approximately $62 million. In August 2018, BARDA exercised one of the option work segments worth $12 million. In June 2019, BARDA increased the total value of the funding contract to up to $63.7 million; at this time, BARDA also exercised a second of the option work segments worth $9.6 million to bring the total amount of committed BARDA funding to $53.6 million. In January 2020, BARDA increased its award by $8.8 million to bring the total amount of the funding contract to $72.5 million and the total amount of committed BARDA funding to $62.4 million. The remaining federal government funding is dependent on BARDA in its sole discretion exercising the final independent option work segment, upon the achievement by the Company of certain agreed-upon milestones for ridinilazole.

As of March 31, 2021, an aggregate of $53.9 million of the total committed BARDA funding had been received and the Company has recognized $47.4 million of cumulative income since contract inception.

Research and development credits

Income from research and development ("R&D") tax credits, consists of R&D tax credits received in the U.K. The Company benefits from two U.K. R&D tax credit cash rebate regimes: Small and Medium Enterprise, or SME, Program and the Research and Development Expenditure Credit ("RDEC") Program. Qualifying expenditures largely comprise employment costs for research staff, consumables, a proportion of relevant, permitted sub-contract costs and certain internal overhead costs incurred as part of research projects for which the Company does not receive income. Tax credits related to the SME Program and RDEC are recorded as other operating income in the consolidated statements of operations and other comprehensive (loss) income. Under both schemes, the Company receives cash payments that are not dependent on the Company’s pre-tax net income levels.

Based on criteria established by Her Majesty’s Revenue and Customs, or HMRC, a portion of expenditures being carried out in relation to the Company's pipeline research and development, clinical trials management and third-party manufacturing development activities are eligible for the SME regime and the Company expects such elements of expenditure will also continue to be eligible for the SME regime for future accounting periods.

For the three months ended March 31, 2021 and March 31, 2020, the Company recognized research and development tax relief in respect of the SME regime of $3.5 million and $1.6 million, respectively, the remaining research and development credit related to the RDEC regime.

CARB-X

Grant income in the prior period consists of income from a sub-award from the Trustees of Boston University under the Combating Antibiotic Resistant Bacteria Biopharmaceutical Accelerator program ("CARB-X") for the Company's antibiotic pipeline research and development activities specifically relating to the DDS-01 series of antibiotics. In the fourth quarter of 2020, the Company decided not to advance the DDS-01 series and to cease work on the gonorrhea program, as such no further grant income is expected to be received from CARB-X under the award.

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Loss per share

3 Months Ended

Mar. 31, 2021

Earnings Per Share [Abstract]

Loss per share

Loss per share

The calculation of loss per share is based on the following data:

	Three Months Ended March 31,
	2021		2020
	(in thousands, except share data)
Net loss	$	(17,488)	$	(6,134)
Basic weighted average number of shares of common stock outstanding	82,817,836		67,217,701
Diluted weighted average number of shares of common stock outstanding	82,817,836		67,217,701
Basic loss per share from operations	(0.21)		(0.09)
Diluted loss per share from operations	(0.21)		(0.09)
Anti-dilutive shares excluded from diluted earnings per share	11,360,940		12,651,602

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Intangible assets

3 Months Ended

Mar. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible assets

Intangible assets

	March 31, 2021						December 31, 2020
	Gross carrying amount		Accumulated amortization and impairment		Net		Gross carrying amount		Accumulated amortization and impairment		Net
(In thousands)
Utrophin program acquired	$	4,572	$	(4,572)	$	—	$	4,534	$	(4,534)	$	—
Discuva platform acquired	14,689		(3,330)		11,359		14,565		(3,050)		11,515
Option over non-financial asset	929		(929)		—		921		(921)		—
Other patents and licenses	151		(151)		—		150		(150)		—
	$	20,341	$	(8,982)	$	11,359	$	20,170	$	(8,655)	$	11,515

Amortization expense was $0.3 million for the periods ended March 31, 2021 and March 31, 2020.

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Promissory note payable to a related party

3 Months Ended

Mar. 31, 2021

Related Party Transactions [Abstract]

Promissory note payable to a related party

Promissory note payable to a related party

On March 24, 2021, the Company entered into a Note Purchase Agreement (the “Initial Purchase Agreement”) pursuant to which Robert W. Duggan, the Company's Executive Chairman, Chief Executive Officer and primary stockholder, loaned the Company $55.0 million in exchange for the issuance by the Company of an unsecured promissory note (the “Initial Note”) in the amount of $55.0 million. The Initial Note was to accrue interest at a rate per annum equal to 150% of the applicable 10 Year US Treasury rate, as adjusted monthly. The rate was initially estimated to be approximately 2.4%. The terms of the Initial Note were that it would mature and become due upon the earlier of (i) the consummation of a registered public offering with net proceeds of no less than $55.0 million, or (ii) 13 months from the date of issuance of the Initial Note.

The Company incurred and capitalized an immaterial amount of debt issuance costs upon entering into the Initial Note, these costs are amortized over the term of the Initial Note. For the three months ended March 31, 2021, the Company recognized interest expense of $27 thousand (March 31, 2020: $nil) in respect of the Initial Note. As of March 31, 2021, the balance of the Initial Note was $55.0 million (March 31, 2020: $nil).

Subsequent to period end, the Company determined, with Mr. Duggan’s agreement, to rescind both the Initial Purchase Agreement and the Initial Note issued, and repaid the principal amount of the Initial Note in full, without interest or penalty. See Note 12 Subsequent events for further details.

Related party transactions

On March 24, 2021, Mr. Duggan entered into a Note Purchase Agreement (the “Initial Purchase Agreement”) pursuant to which he loaned the Company $55.0 million in exchange for the issuance by the Company of an unsecured promissory note (the “Initial Note”) in the amount of $55.0 million. The Initial Note was to accrue interest at a rate per annum equal to 150% of the applicable 10 Year US Treasury rate, as adjusted monthly. The rate was initially estimated to be approximately 2.4%. The terms of the Initial Note were that it would mature and become due upon the earlier of (i) the consummation of a registered public offering with net proceeds of no less than $55.0 million, or (ii) 13 months from the date of issuance of the Initial Note. For the three months ended March 31, 2021, interest of $27 thousand accrued in respect of the Initial Note.

On April 20, 2021, the Company determined, with Mr. Duggan’s agreement, to rescind both the Initial Purchase Agreement entered into with Mr. Duggan on March 24, 2021 and the Initial Note issued thereunder, and repaid the principal amount of the Initial Note in full, without interest or penalty.

On April 20, 2021, subsequent to the repayment of the Initial Note, Mr. Duggan entered into a second Note Purchase Agreement (the “Second Purchase Agreement”) pursuant to which he loaned the Company $55.0 million in exchange for the issuance by the Company of an unsecured promissory note (the “Second Note”) in the amount of $55.0 million. The Second Note accrues interest at a rate per annum equal to 150% of the applicable 10 Year US Treasury rate, as adjusted monthly (initially estimated to be approximately 2.4%). The Company is permitted to prepay any portion of the Second Note at is option without penalty. The Second Note matures and becomes due upon the earlier of (i) the consummation of a registered public offering with net proceeds of no less than $55.0 million or (ii) 13 months from the date of issuance of the Second Note. Following consummation of the rights offering as described below in Note 12 Subsequent events, the Second Note matured and all principal and interest thereunder was repaid by the Company.

On May 12, 2021, Mr. Duggan, participated in the Company's rights offering and purchased a total of 11,365,921 shares of the Company’s common stock, par value $0.01, at a price of $5.24 per share. After giving effect to the rights offering, Mr. Duggan is the beneficial owner of approximately 70.78% of the Company’s outstanding common stock. Dr. Zanganeh, the Company's Chief Operating Officer, also participated in the Company’s rights offering, purchasing a total of 389,077 shares of the Company’s common stock, par value $0.01, at a price of $5.24 per share. For further details related to the rights offering, see Note 12 Subsequent events.

On March 26, 2021, the Company entered into a Sublease with Maky Zanganeh and Associates, Inc. ("MZA") consisting of 4,500 square feet of office space at 2882 Sand Hill Road, Menlo Park, CA (the “Sublease”). The Sublease runs until September 2022, with monthly rent payments to MZA of $57,960 in the first six months and $59,670 for the remainder of the term of the Sublease. The rent payable under the terms of the Sublease is equivalent to the proportionate share of the rent payable by MZA to the third party landlord, based on the square footage of office space sublet by the Company, and no mark-up has been applied. During the three months ended March 31, 2021, no payments were made pursuant to the Sublease, however the Company accrued charges of $28,980.

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Stock based compensation

3 Months Ended

Mar. 31, 2021

Share-based Payment Arrangement [Abstract]

Stock based compensation

Stock based compensation

The following table summarizes stock option activity as of March 31, 2021, and changes during the three months ended March 31, 2021:

	Three Months Ended March 31, 2021	Weighted average exercise price
Outstanding at January 1, 2021	3,672,968	$	2.90
Granted	2,196,350	$	4.77
Forfeited	(11,980)	$	2.57
Exercised	(317,535)	$	2.82
Number of outstanding options	5,539,803	$	3.64
Exercisable at March 31, 2021	616,503	$	2.13

In addition to the stock options outstanding above, as of March 31, 2021, the Company had granted 6,657,136 stock options subject to performance based conditions. As of March 31, 2021, the performance conditions had not been agreed and communicated and therefore a grant date for accounting purposes had not been established. As such, these performance based stock options have been excluded from the summary of stock option activity above and no expense has been recorded in the consolidated statement of operations.

The total intrinsic value of all outstanding and exercisable stock options at March 31, 2021 was $12.9 million and $2.3 million, respectively.

The following table summarizes restricted stock units ("RSUs") granted in the form of nominal-cost options as of March 31, 2021 and changes during the three months ended March 31, 2021:

	Three Months Ended March 31, 2021	Weighted average exercise price
Outstanding at January 1, 2021	26,932	$	0.07
Exercised during the period	(26,932)	$	0.07
Number of outstanding RSUs	—	$	—

The Company also had outstanding and exercisable warrants of 5,821,137 as of March 31, 2021 (December 31, 2020: 5,821,137) with weighted average exercise price of $1.56 and a total intrinsic value of $25.1 million.

The following table summarizes stock-based compensation expense reflected in the consolidated statements of operations:

	Three Months Ended March 31,
	2021		2020
	(in thousands)
Research and development	$	323	$	84
General and administrative	546		213
Total stock-based compensation expense	$	869	$	297

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Related party transactions

3 Months Ended

Mar. 31, 2021

Related Party Transactions [Abstract]

Related party transactions

Promissory note payable to a related party

On March 24, 2021, the Company entered into a Note Purchase Agreement (the “Initial Purchase Agreement”) pursuant to which Robert W. Duggan, the Company's Executive Chairman, Chief Executive Officer and primary stockholder, loaned the Company $55.0 million in exchange for the issuance by the Company of an unsecured promissory note (the “Initial Note”) in the amount of $55.0 million. The Initial Note was to accrue interest at a rate per annum equal to 150% of the applicable 10 Year US Treasury rate, as adjusted monthly. The rate was initially estimated to be approximately 2.4%. The terms of the Initial Note were that it would mature and become due upon the earlier of (i) the consummation of a registered public offering with net proceeds of no less than $55.0 million, or (ii) 13 months from the date of issuance of the Initial Note.

The Company incurred and capitalized an immaterial amount of debt issuance costs upon entering into the Initial Note, these costs are amortized over the term of the Initial Note. For the three months ended March 31, 2021, the Company recognized interest expense of $27 thousand (March 31, 2020: $nil) in respect of the Initial Note. As of March 31, 2021, the balance of the Initial Note was $55.0 million (March 31, 2020: $nil).

Subsequent to period end, the Company determined, with Mr. Duggan’s agreement, to rescind both the Initial Purchase Agreement and the Initial Note issued, and repaid the principal amount of the Initial Note in full, without interest or penalty. See Note 12 Subsequent events for further details.

Related party transactions

On March 24, 2021, Mr. Duggan entered into a Note Purchase Agreement (the “Initial Purchase Agreement”) pursuant to which he loaned the Company $55.0 million in exchange for the issuance by the Company of an unsecured promissory note (the “Initial Note”) in the amount of $55.0 million. The Initial Note was to accrue interest at a rate per annum equal to 150% of the applicable 10 Year US Treasury rate, as adjusted monthly. The rate was initially estimated to be approximately 2.4%. The terms of the Initial Note were that it would mature and become due upon the earlier of (i) the consummation of a registered public offering with net proceeds of no less than $55.0 million, or (ii) 13 months from the date of issuance of the Initial Note. For the three months ended March 31, 2021, interest of $27 thousand accrued in respect of the Initial Note.

On April 20, 2021, the Company determined, with Mr. Duggan’s agreement, to rescind both the Initial Purchase Agreement entered into with Mr. Duggan on March 24, 2021 and the Initial Note issued thereunder, and repaid the principal amount of the Initial Note in full, without interest or penalty.

On April 20, 2021, subsequent to the repayment of the Initial Note, Mr. Duggan entered into a second Note Purchase Agreement (the “Second Purchase Agreement”) pursuant to which he loaned the Company $55.0 million in exchange for the issuance by the Company of an unsecured promissory note (the “Second Note”) in the amount of $55.0 million. The Second Note accrues interest at a rate per annum equal to 150% of the applicable 10 Year US Treasury rate, as adjusted monthly (initially estimated to be approximately 2.4%). The Company is permitted to prepay any portion of the Second Note at is option without penalty. The Second Note matures and becomes due upon the earlier of (i) the consummation of a registered public offering with net proceeds of no less than $55.0 million or (ii) 13 months from the date of issuance of the Second Note. Following consummation of the rights offering as described below in Note 12 Subsequent events, the Second Note matured and all principal and interest thereunder was repaid by the Company.

On May 12, 2021, Mr. Duggan, participated in the Company's rights offering and purchased a total of 11,365,921 shares of the Company’s common stock, par value $0.01, at a price of $5.24 per share. After giving effect to the rights offering, Mr. Duggan is the beneficial owner of approximately 70.78% of the Company’s outstanding common stock. Dr. Zanganeh, the Company's Chief Operating Officer, also participated in the Company’s rights offering, purchasing a total of 389,077 shares of the Company’s common stock, par value $0.01, at a price of $5.24 per share. For further details related to the rights offering, see Note 12 Subsequent events.

On March 26, 2021, the Company entered into a Sublease with Maky Zanganeh and Associates, Inc. ("MZA") consisting of 4,500 square feet of office space at 2882 Sand Hill Road, Menlo Park, CA (the “Sublease”). The Sublease runs until September 2022, with monthly rent payments to MZA of $57,960 in the first six months and $59,670 for the remainder of the term of the Sublease. The rent payable under the terms of the Sublease is equivalent to the proportionate share of the rent payable by MZA to the third party landlord, based on the square footage of office space sublet by the Company, and no mark-up has been applied. During the three months ended March 31, 2021, no payments were made pursuant to the Sublease, however the Company accrued charges of $28,980.

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Subsequent events

3 Months Ended

Mar. 31, 2021

Subsequent Events [Abstract]

Subsequent events

Subsequent events

On April 20, 2021, Mr. Duggan entered into a Second Note Purchase Agreement pursuant to which he loaned the Company $55.0 million in exchange for the issuance by the Company of an unsecured promissory note in the amount of $55.0 million. Prior to entering into the Second Purchase Agreement, the Company determined, with Mr. Duggan’s agreement, to rescind both the Initial Purchase Agreement entered into with Mr. Duggan on March 24, 2021 and the Initial Note issued thereunder, and had repaid the principal amount under such note in full, without interest or penalty. For further details of the Initial and Second Notes and the rescission, see Note 11 Related party transactions.

On May 12, 2021, the Company closed its previously announced rights offering, which was fully subscribed. The Company received aggregate gross proceeds from the rights offering of $75.0 million from the sale of 14,312,976 shares of the Company’s common stock, par value $0.01, at a price per share of $5.24. Issuance costs associated with the rights offering were immaterial. In connection with the closing of the rights offering the Second Note matured and became due, and the Company repaid all principal and accrued interest thereunder using a portion of the proceeds of the rights offering.

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Basis of presentation and summary of significant accounting policies (Policies)

3 Months Ended

Mar. 31, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Use of estimates

Use of Estimates

The preparation of the consolidated financial statements in conformity with U.S. GAAP requires the use of estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Recently adopted accounting standards and recent accounting standards not yet adopted

Recently adopted accounting standards

In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740), Simplifying the Accounting for Income Taxes. The amendments in this ASU are intended to simplify the accounting for income taxes by removing certain exceptions to the general principles in Topic 740. The amendments are also intended to improve consistent application of and simplify GAAP for other areas of Topic 740 by clarifying and amending existing guidance. This ASU became effective for the Company on January 1, 2021. The adoption of this update did not have a material impact on the Company’s consolidated financial statements.

Recent accounting standards not yet adopted

In January 2017, the FASB issues ASU 2017-04, Intangibles - Goodwill and Other (Topic 350). This update simplifies the accounting for goodwill impairments by removing the requirement to determine the fair value of individual assets and liabilities in order to calculate a reporting unit’s “implied” goodwill under the current guidance. This update will be effective for the Company for fiscal years beginning after December 15, 2022. The adoption of this update is not expected to have a material impact on the Company’s consolidated financial statements.

Other recent authoritative guidance issued by the FASB (including technical corrections to the FASB ASC), the American Institute of Certified Public Accountants, and the SEC did not, or are not expected to have a material impact on the Company's consolidated financial statements.

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Revenue (Tables)

3 Months Ended

Mar. 31, 2021

Revenue from Contract with Customer [Abstract]

Analysis of revenue by category

	Three Months Ended March 31,
	2021		2020
Analysis of revenue by category:	(in thousands)
Licensing agreements	$	192	$	324
	$	192	$	324

Analysis of revenue by geography

	Three Months Ended March 31,
	2021		2020
Analysis of revenue by geography:	(in thousands)
Latin America	$	192	$	324
	$	192	$	324

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Other operating income (Tables)

3 Months Ended

Mar. 31, 2021

Other Income and Expenses [Abstract]

Analysis of other operating income by category

	Three Months Ended March 31,
	2021		2020
Analysis of other operating income by category:	(in thousands)
Income recognized in respect of BARDA	$	1,770	$	4,949
Research and development credits	3,679		1,764
Grant income	—		107
	$	5,449	$	6,820

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Loss per share (Tables)

3 Months Ended

Mar. 31, 2021

Earnings Per Share [Abstract]

Schedule of earnings per share, basic and diluted

The calculation of loss per share is based on the following data:

	Three Months Ended March 31,
	2021		2020
	(in thousands, except share data)
Net loss	$	(17,488)	$	(6,134)
Basic weighted average number of shares of common stock outstanding	82,817,836		67,217,701
Diluted weighted average number of shares of common stock outstanding	82,817,836		67,217,701
Basic loss per share from operations	(0.21)		(0.09)
Diluted loss per share from operations	(0.21)		(0.09)
Anti-dilutive shares excluded from diluted earnings per share	11,360,940		12,651,602

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Intangible assets (Tables)

3 Months Ended

Mar. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of intangible assets

	March 31, 2021						December 31, 2020
	Gross carrying amount		Accumulated amortization and impairment		Net		Gross carrying amount		Accumulated amortization and impairment		Net
(In thousands)
Utrophin program acquired	$	4,572	$	(4,572)	$	—	$	4,534	$	(4,534)	$	—
Discuva platform acquired	14,689		(3,330)		11,359		14,565		(3,050)		11,515
Option over non-financial asset	929		(929)		—		921		(921)		—
Other patents and licenses	151		(151)		—		150		(150)		—
	$	20,341	$	(8,982)	$	11,359	$	20,170	$	(8,655)	$	11,515

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Stock based compensation (Tables)

3 Months Ended

Mar. 31, 2021

Share-based Payment Arrangement [Abstract]

Schedule of stock option activity

The following table summarizes stock option activity as of March 31, 2021, and changes during the three months ended March 31, 2021:

	Three Months Ended March 31, 2021	Weighted average exercise price
Outstanding at January 1, 2021	3,672,968	$	2.90
Granted	2,196,350	$	4.77
Forfeited	(11,980)	$	2.57
Exercised	(317,535)	$	2.82
Number of outstanding options	5,539,803	$	3.64
Exercisable at March 31, 2021	616,503	$	2.13

Schedule of RSU activity

The following table summarizes restricted stock units ("RSUs") granted in the form of nominal-cost options as of March 31, 2021 and changes during the three months ended March 31, 2021:

	Three Months Ended March 31, 2021	Weighted average exercise price
Outstanding at January 1, 2021	26,932	$	0.07
Exercised during the period	(26,932)	$	0.07
Number of outstanding RSUs	—	$	—

Schedule of stock-based compensation expense

The following table summarizes stock-based compensation expense reflected in the consolidated statements of operations:

	Three Months Ended March 31,
	2021		2020
	(in thousands)
Research and development	$	323	$	84
General and administrative	546		213
Total stock-based compensation expense	$	869	$	297

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Nature of the business and operations (Details)	Sep. 18, 2020	Mar. 31, 2021 $ / shares	Dec. 31, 2020 $ / shares
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Reverse stock split ratio	0.2
Common stock par value (in dollars per share)		$ 0.01	$ 0.01

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Basis of presentation and summary of significant accounting policies (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Error Corrections and Prior Period Adjustments Restatement [Line Items]
General and administrative	$ 4,185	$ 3,572
Research and development	18,379	12,912
Goodwill	2,047		$ 2,030
Deferred tax benefit	$ 0	(55)
Reclassification adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
General and administrative		(400)
Research and development		400
Reclassification adjustment | General and administrative
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Foreign currency gain		(3,300)
Reclassification adjustment | Other income (expense)
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Foreign currency gain		3,300
Error correction adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Goodwill		(400)
Deferred tax assets		1,900
Deferred tax benefit		$ 200

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Going concern (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
	May 12, 2021	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Cash and cash equivalents		$ 102,194		$ 66,417
Accumulated deficit		228,434		$ 210,946
Net loss		17,488	$ 6,134
Net cash used in operating activities		$ 20,669	$ 4,959
Related Party Transaction [Line Items]
Common stock par value (in dollars per share)		$ 0.01		$ 0.01
Subsequent event
Related Party Transaction [Line Items]
Common stock par value (in dollars per share)	$ 0.01
Subsequent event | Chief Executive Officer | Second Purchase Agreement
Related Party Transaction [Line Items]
Repayment of note payable	$ 55,000
Subsequent event | Rights offering
Related Party Transaction [Line Items]
Consideration received on sale of stock	$ 75,000
Shares issued in transaction (in shares)	14,312,976
Share price (in dollars per share)	$ 5.24
Subsequent event | Rights offering | Chief Executive Officer
Related Party Transaction [Line Items]
Shares issued in transaction (in shares)	11,365,921
Share price (in dollars per share)	$ 5.24

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Segment reporting (Details)	3 Months Ended
	Mar. 31, 2021 segment
Segment Reporting [Abstract]
Number of operating segments	1
Number of geographic regions	2

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Revenue - Analysis of revenue by category (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenue from External Customer [Line Items]
Revenue	$ 192	$ 324
Licensing agreements
Revenue from External Customer [Line Items]
Revenue	$ 192	$ 324

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Revenue - Analysis of revenue by geography (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Revenue	$ 192	$ 324
Latin America
Disaggregation of Revenue [Line Items]
Revenue	$ 192	$ 324

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Revenue - Narrative (Details) - Licensing agreements - EuroFarma - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Feb. 29, 2020	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Deferred revenue, upfront payment				$ 2,500
Deferred revenue, enrollment milestone			$ 1,000
Revenue recognized related to upfront payment and enrollment milestone	$ 200	$ 300
Revenue entitled to receive upon achieving patient enrollment targets	2,750
Revenue entitled to receive upon achieving cumulative net sales targets	21,400
Cumulative net sales target threshold	100,000
Incremental cumulative net sales target threshold	$ 100,000

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Other operating income - Analysis of other operating income by category (Details) - USD ($) $ in Thousands	3 Months Ended		43 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021
Revenue from External Customer [Line Items]
Research and development credits	$ 3,679	$ 1,764
Other operating income	5,449	6,820
BARDA
Revenue from External Customer [Line Items]
Grant income	1,770	4,949	$ 47,400
Other grant funding counterparties
Revenue from External Customer [Line Items]
Grant income	$ 0	$ 107

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Other operating income - Narrative (Details) $ in Thousands	1 Months Ended				3 Months Ended		43 Months Ended
	Jan. 31, 2020 USD ($)	Jun. 30, 2019 USD ($)	Aug. 31, 2018 USD ($)	Sep. 30, 2017 USD ($) option_segment	Mar. 31, 2021 USD ($)	Mar. 31, 2020 USD ($)	Mar. 31, 2021 USD ($)
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Research and development tax relief in respect of the SME regime					$ 3,500	$ 1,600
BARDA
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Committed funding base				$ 32,000
Number of option segments | option_segment				3
Maximum funding value	$ 72,500	$ 63,700		$ 62,000
Committed funding increase	8,800	9,600	$ 12,000
Total committed funding	$ 62,400	$ 53,600
Funding received							$ 53,900
Grant income					$ 1,770	$ 4,949	$ 47,400

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Loss per share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share [Abstract]
Net loss	$ (17,488)	$ (6,134)
Basic weighted average number of shares of common stock outstanding (in shares)	82,817,836	67,217,701
Diluted weighted average number of shares of common stock outstanding (in shares)	82,817,836	67,217,701
Basic loss per common share from operations (in dollars per share)	$ (0.21)	$ (0.09)
Diluted loss per share from operations (in dollars per share)	$ (0.21)	$ (0.09)
Anti-dilutive shares excluded from diluted earnings per share (in shares)	11,360,940	12,651,602

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Intangible assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 20,341		$ 20,170
Accumulated amortization and impairment	(8,982)		(8,655)
Net	11,359		11,515
Amortization of intangible assets	255	$ 266
Software licenses | Utrophin program acquired
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	4,572		4,534
Accumulated amortization and impairment	(4,572)		(4,534)
Net	0		0
Software licenses | Discuva platform acquired
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	14,689		14,565
Accumulated amortization and impairment	(3,330)		(3,050)
Net	11,359		11,515
Option over non-financial asset
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	929		921
Accumulated amortization and impairment	(929)		(921)
Net	0		0
Other patents and licenses
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	151		150
Accumulated amortization and impairment	(151)		(150)
Net	$ 0		$ 0

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Promissory note payable to a related party (Details) - USD ($)		3 Months Ended
	Mar. 24, 2021	Mar. 31, 2021	Mar. 31, 2020
Related Party Transaction [Line Items]
Proceeds from related party promissory note		$ 55,000,000	$ 0
Chief Executive Officer | Initial Purchase Agreement
Related Party Transaction [Line Items]
Proceeds from related party promissory note	$ 55,000,000.0
Notes payable, estimated interest rate	2.40%
Notes payable, maturity triggering event, public offering proceeds threshold	$ 55,000,000.0
Notes payable, term	13 months
Interest expense		27,000	0
Notes payable	$ 55,000,000.0	$ 55,000,000.0	$ 0
Chief Executive Officer | Initial Purchase Agreement | 10 year US Treasury rate
Related Party Transaction [Line Items]
Notes payable, basis spread on variable rate	150.00%

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Stock based compensation - Schedule of stock option activity (Details)	3 Months Ended
	Mar. 31, 2021 $ / shares shares
Number of share options
Beginning balance (in shares) | shares	3,672,968
Granted (in shares) | shares	2,196,350
Forfeited (in shares) | shares	(11,980)
Exercise (in shares) | shares	(317,535)
Ending balance (in shares) | shares	5,539,803
Weighted average exercise price
Beginning balance (in dollars per share) | $ / shares	$ 2.90
Granted (in dollars per share) | $ / shares	4.77
Forfeited (in dollars per share) | $ / shares	2.57
Exercised (in dollars per share) | $ / shares	2.82
Ending balance (in dollars per share) | $ / shares	$ 3.64
Stock option activity, additional disclosures
Exercisable, number of share options (in shares) | shares	616,503
Weighted average exercise price, exercisable (in dollars per share) | $ / shares	$ 2.13

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Stock based compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted subject to performance based conditions (in shares)	2,196,350
Aggregate intrinsic value, outstanding options	$ 12.9
Aggregate intrinsic value, exercisable options	$ 2.3
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted subject to performance based conditions (in shares)	6,657,136
Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-option equity instruments outstanding (in shares)	5,821,137	5,821,137
Non-option equity instruments exercisable (in shares)	5,821,137	5,821,137
Weighted average exercise price of non-option equity instruments outstanding (in dollars per share)	$ 1.56
Weighted average exercise price of non-option equity instruments exercisable (in dollars per share)	$ 1.56
Intrinsic value of outstanding non-option equity instruments	$ 25.1
Intrinsic value of exercisable non-option equity instruments	$ 25.1

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Stock based compensation - Schedule of RSU activity (Details) - RSUs - $ / shares	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Number of shares
Beginning balance (in shares)	26,932
Exercised (in shares)	(26,932)
Ending balance (in shares)	0
Weighted average exercise price
Exercise price (in dollars per share)	$ 0	$ 0.07
Exercised (in dollars per share)	$ 0.07

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Stock based compensation - Schedule of stock-based compensation expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	$ 869	$ 297
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	323	84
General and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	$ 546	$ 213

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Related party transactions (Details)				3 Months Ended		6 Months Ended	12 Months Ended
	May 12, 2021 $ / shares shares	Apr. 20, 2021 USD ($)	Mar. 24, 2021 USD ($)	Mar. 31, 2021 USD ($) $ / shares	Mar. 31, 2020 USD ($)	Sep. 25, 2021 USD ($)	Sep. 30, 2022 USD ($)	Mar. 26, 2021 ft²	Dec. 31, 2020 $ / shares
Related Party Transaction [Line Items]
Proceeds from related party promissory note				$ 55,000,000	$ 0
Common stock par value (in dollars per share) | $ / shares				$ 0.01					$ 0.01
Accrued charges				$ 28,980
Subsequent event
Related Party Transaction [Line Items]
Common stock par value (in dollars per share) | $ / shares	$ 0.01
Subsequent event | Rights offering
Related Party Transaction [Line Items]
Shares issued in transaction (in shares) | shares	14,312,976
Share price (in dollars per share) | $ / shares	$ 5.24
Chief Executive Officer | Subsequent event
Related Party Transaction [Line Items]
Beneficial ownership percentage	70.78%
Chief Executive Officer | Subsequent event | Rights offering
Related Party Transaction [Line Items]
Shares issued in transaction (in shares) | shares	11,365,921
Share price (in dollars per share) | $ / shares	$ 5.24
Chief Executive Officer | Initial Purchase Agreement
Related Party Transaction [Line Items]
Proceeds from related party promissory note			$ 55,000,000.0
Notes payable			$ 55,000,000.0	55,000,000.0	0
Notes payable, estimated interest rate			2.40%
Notes payable, maturity triggering event, public offering proceeds threshold			$ 55,000,000.0
Notes payable, term			13 months
Interest expense				$ 27,000	$ 0
Chief Executive Officer | Initial Purchase Agreement | 10 year US Treasury rate
Related Party Transaction [Line Items]
Notes payable, basis spread on variable rate			150.00%
Chief Executive Officer | Second Purchase Agreement | Subsequent event
Related Party Transaction [Line Items]
Proceeds from related party promissory note		$ 55,000,000.0
Notes payable		$ 55,000,000.0
Notes payable, estimated interest rate		2.40%
Notes payable, maturity triggering event, public offering proceeds threshold		$ 55,000,000.0
Notes payable, term		13 months
Chief Executive Officer | Second Purchase Agreement | 10 year US Treasury rate | Subsequent event
Related Party Transaction [Line Items]
Notes payable, basis spread on variable rate		150.00%
Chief Operating Officer | Subsequent event | Rights offering
Related Party Transaction [Line Items]
Shares issued in transaction (in shares) | shares	389,077
Share price (in dollars per share) | $ / shares	$ 5.24
Affiliated entity
Related Party Transaction [Line Items]
Area of premises subleased | ft²								4,500
Affiliated entity | Forecast
Related Party Transaction [Line Items]
Monthly expense from related party						$ 57,960	$ 59,670

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Subsequent events (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended
	May 12, 2021	Apr. 20, 2021	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Subsequent Event [Line Items]
Proceeds from related party promissory note			$ 55,000	$ 0
Common stock par value (in dollars per share)			$ 0.01		$ 0.01
Subsequent event
Subsequent Event [Line Items]
Common stock par value (in dollars per share)	$ 0.01
Subsequent event | Rights offering
Subsequent Event [Line Items]
Consideration received on sale of stock	$ 75,000
Shares issued in transaction (in shares)	14,312,976
Share price (in dollars per share)	$ 5.24
Subsequent event | Chief Executive Officer | Rights offering
Subsequent Event [Line Items]
Shares issued in transaction (in shares)	11,365,921
Share price (in dollars per share)	$ 5.24
Subsequent event | Chief Executive Officer | Second Purchase Agreement
Subsequent Event [Line Items]
Proceeds from related party promissory note		$ 55,000
Notes payable		$ 55,000