COMPASS Pathways plc

1. Nature of Business

Compass Pathways plc, or the Company, is a biotechnology company dedicated to accelerating patient access to evidence-based innovation in mental health. The Company is developing its investigational COMP360 psilocybin treatment through late-stage clinical trials in Europe and North America for patients with treatment-resistant depression.

The Company is subject to risks and uncertainties common to clinical stage companies in the biotechnology industry, including, but not limited to, development by competitors of new technological innovations, dependence on key personnel, protection of proprietary intellectual property and technology, compliance with government regulations and the ability to secure additional capital to fund operations. The therapeutic candidate currently under development will require significant additional research and development efforts, including preclinical and clinical testing and regulatory approval, prior to commercialization. These efforts require significant amounts of capital, adequate personnel and infrastructure and extensive compliance-reporting capabilities. Even if the Company’s therapeutic development efforts are successful, it is uncertain when, if ever, the Company will realize revenue from sales.

The Company has funded its operations with proceeds from the sale of its ordinary shares, American Depository Shares, or ADSs, including in its offerings pursuant to its at-the-market, or ATM, offering program, proceeds from a loan agreement with Hercules Capital, Inc., and proceeds from a private placement transaction, or the PIPE. The Company was party to a Sales Agreement for its ATM offering program, dated October 8, 2021, with TD Securities (USA) LLC, or TD Cowen, under which the Company was able to issue and sell from time to time up to $150.0 million of its ADSs, each representingone ordinary share, through TD Cowen as the sales agent. Pursuant to the Sales Agreement dated October 8, 2021, through February 27, 2025, the Company sold 5,491,836 ADSs under the Company’s ATM offering program, resulting in $54.8 million in net proceeds. On February 27, 2025, the Company entered into a new Sales Agreement to govern the Company’s ATM offering program with TD Cowen, or the Sales Agreement, under which the Company may issue and sell from time to time up to $150.0 million of our ADSs, subject to the terms of the Sales Agreement. Sales of its ADSs, if any, will generally be made at market prices. To date, the Company has not sold any ADSs under this Sales Agreement.

On June 30, 2023, the Company entered into a Loan Agreement with Hercules, which provided for aggregate maximum borrowings of up to $50.0 million, including a term loan of $30.0 million, which was funded on June 30, 2023. On August 16, 2023, the Company entered into a Securities Purchase Agreement, pursuant to which the Company agreed to sell and issue in a private placement transaction (i)16,076,750 ADSs and (ii) PIPE Warrants to purchase up to 16,076,750 ADSs, at a purchase price of approximately $7.78 per ADS and accompanying PIPE Warrant to purchaseone ADS. Each PIPE Warrant has an exercise price of $9.93 per ADS and is exercisable for athree-year period beginning in February 2024. The PIPE Warrants may be exercised on a cashless basis if there is no effective registration statement registering the shares underlying the PIPE Warrants. Through September 30, 2025, PIPE Warrants were exercised for 3,752,050 ADS, resulting in $37.3 million in exercise proceeds. The Company will receive up to an additional approximately $122.4 million in gross proceeds if the PIPE Warrants are fully exercised for cash. During the three months ended September 30, 2025, no PIPE warrants were exercised.

In January 2025, the Company issued and sold (i)24,014,728 American Depositary Shares, each representingone ordinary share, nominal value £0.008 each, of the Company and accompanying warrants to purchase up to 24,014,728 ADSs, and (ii) in lieu of ADSs, to certain investors, Pre-funded Warrants to purchase up to 11,044,720 ADSs and accompanying 2025 ADS Warrants to purchase up to 11,044,720 ADSs. The offering price was $4.2750 per ADS and accompanying 2025 ADS Warrant, and $4.2649 per Pre-funded Warrant and accompanying 2025 ADS Warrant. The Pre-funded Warrants have an exercise price of $0.0001 per ADS and are exercisable immediately. The Pre-funded Warrants expire when exercised in full. The 2025 ADS Warrants have an exercise price of $5.7960 per ADS and are exercisable following a specified data milestone. The 2025 ADS Warrants will expire three years after such warrants become exercisable. Once the ADS Warrants become exercisable, the Company may force the exercise of the 2025 ADS Warrants (by way of cash or cashless exercise, at the Company’s option), in whole or in part, by delivering a notice of forced exercise to the holders, provided that the closing price for the Company’s ADSs on Nasdaq exceeded the warrant exercise price of $5.7960 for thethree consecutive trading days prior to the date on which the notice of forced exercise is delivered. During the three months ended September 30, 2025,2,344,720 Pre-funded warrants were exercised.

The Company has incurred recurring losses since its inception, including net losses of $194.0 million and $111.8 million for the nine months ended September 30, 2025 and 2024, respectively. In addition, as of September 30, 2025, the Company had an accumulated deficit of $728.7 million. The Company expects to continue to generate operating losses for the foreseeable future. The Company believes the cash and cash equivalents on hand as of September 30, 2025 of $185.9 million will be sufficient to fund its operating expenses and capital expenditure requirements for at least the next twelve months from the date of issuance of these condensed consolidated financial statements. The future viability of the Company is dependent on its ability to raise additional capital to finance its operations. The Company’s inability to raise capital as and when needed could have a negative impact on its financial condition and ability to pursue its business strategies. There can be no assurance that the current operating plan will be achieved or that additional funding will be available on terms acceptable to the Company, or at all. The Company may raise additional capital through a combination of equity offerings, debt financings, collaborations, and other strategic transactions, including marketing, distribution or licensing arrangements. The failure of the Company to obtain sufficient funds on acceptable terms when needed could have a material adverse effect on the Company’s business, results of operations, and financial conditions.

Market volatility, geopolitical tensions or instability (including from the effects of announced or future tariff increases), geopolitical conflict (such as the war between Ukraine and Russia and conflict in the Middle East), fluctuating inflation and interest rates and the related impact on U.S., UK and global economies, instability in the banking system, the risk of an economic slowdown or recession in the U.S., significant changes in U.S. policies or regulatory environment or the disruption to U.S. government agencies (whether from the continued government shutdown or reduced resources) or other factors could adversely impact the Company’s operations, financial results and ability to raise additional funding.

2. Summary of Significant Accounting Policies

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America, or U.S. GAAP. The unaudited condensed consolidated financial statements have been prepared on the same basis as the audited annual consolidated financial statements as of and for the year ended December 31, 2024, and, in the opinion of management, reflect all adjustments, consisting of normal recurring adjustments, necessary for the fair statement of the Company’s financial position for the reported periods.

The results of the Company’s operations for any interim period are not necessarily indicative of the results of the Company’s operations for any other interim period or for a full fiscal year. These interim financial statements should be read in conjunction with the audited consolidated financial statements as of and for the year ended December 31, 2024, and the notes thereto, which are included in the Company’s Annual Report on Form 10-K that was filed with the SEC, on February 27, 2025. The condensed consolidated balance sheet at December 31, 2024, was derived from audited annual consolidated financial statements but does not contain all of the footnote disclosures from the annual financial statements.

Principles of Consolidation

The accompanying condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated on consolidation.

Significant Accounting Policies

The Company’s significant accounting policies are described in Note 2 of the Notes to Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024.

Use of Estimates

The preparation of the condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of income and expenses during the reporting periods. Significant estimates and assumptions reflected in these condensed consolidated financial statements include, but are not limited to, warrant liabilities. Estimates are periodically reviewed in light of changes in circumstances, facts and experience. Changes in estimates are recorded in the period in which they become known. Actual results could differ materially from those estimates.

Recently Issued Accounting Pronouncements

In December 2023, the FASB issued ASU 2023-09 - Income Taxes (Topic 740): Improvements to Income Tax Disclosures, designed to improve income tax disclosure requirements, primarily through increased disaggregation disclosures within the effective tax rate reconciliation as well as enhanced disclosures on income taxes paid. The guidance is effective for all fiscal years beginning after December 15, 2024. The new standard can be adopted on a prospective basis with an option to be adopted retrospectively and early adoption is permitted. We are currently evaluating this guidance to determine its impact on the Company’s year-end consolidated financial statement disclosures.

In November 2024, the FASB issued ASU 2024-03 - Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses, designed to improve disclosures, primarily through increased expense disaggregation. Additionally, in January 2025, the FASB issued ASU 2025-01 to clarify the effective date of ASU 2024-03. The guidance is effective for all fiscal years beginning after December 15, 2026, and interim reporting periods within annual reporting periods beginning after December 15, 2027. The new standard can be adopted on a prospective basis with an option to be adopted retrospectively and early adoption is permitted. The Company is not early adopting the standard. We are currently evaluating this guidance to determine its impact on the Company’s consolidated financial statement disclosures.

One Big Beautiful Bill Act

On July 4, 2025, the One Big Beautiful Bill Act ("OBBBA") was signed into law. The OBBBA introduced multiple U.S. federal income tax changes such as deductibility of domestic research and development expenses, deductibility on certain property additions and limitations on interest expense deduction. The Company has assessed the legislation, and believes the impact of these provisions on our consolidated financial statements will not be material.

3. Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consisted of the following (in thousands):

The Company was uncertain whether it would meet the R&D intensity condition and be eligible for the enhanced effective rate for its tax submission relating to the year ended December 31, 2023. The Company sought clarity from HMRC in the form of a non-statutory clearance and received a positive response in April 2025. The Company filed a resubmission claim relating to the year ended December 31, 2023 at the enhanced rate, which resulted in an increase in its R&D tax relief claim of $4.1 million.

4. Debt

On June 30, 2023, or the Effective Date, the Company entered into the Loan Agreement with Hercules, which was subsequently amended on October 31, 2024, and July 30, 2025 (the “Loan Agreement”) and provides for aggregate maximum borrowings of up to $50.0 million, consisting of (i) a term loan of $30.0 million, which was funded on the Effective Date, and (ii) subject to the approval of Hercules’ investment committee in its sole discretion, and available during the interest-only period, an additional term loan of $20.0 million.

The term loan will mature on July 1, 2027. The outstanding principal balance of the term loan bears interest at an annual rate equal to the greater of either (i) the prime rate as reported in The Wall Street Journal plus 1.50% or (ii)9.75%. Accrued interest is payable monthly following the funding of each term loan. In addition to accrued interest, payment-in-kind (PIK) interest of 1.40% will be added to the balance of the loan. Payments under the Loan Agreement are interest only until the first principal payment is due on January 2, 2026 (subject to extension if a certain performance milestone is met), followed by equal monthly payments of principal and interest through the scheduled maturity date, July 1, 2027. The carrying value of the Company’s outstanding debt approximates fair value, reflecting interest rates currently available to the Company.

The Company incurred fees and transaction costs totaling $3.3 million associated with the initial term loan, which are recorded as a reduction to the carrying value of the long-term debt in the condensed consolidated balance sheets. These fees included $0.4 million of facility fees, $0.8 million of company fees, $0.7 million in warrants, and $1.4 million of end of term charges. The fees, transaction costs, and the end of term charges are amortized to interest expense through the maturity date using the effective interest method. The effective interest rate of the Loan Agreement was 14.8% as of September 30, 2025.

The Company issued warrants to Hercules to purchase the Company’s Ordinary Shares equal to the quotient derived by dividing (i) the amount equal to (a)2.5% times (b) the aggregate principal amount of term loan advances made and funded under the Loan Agreement by (ii) the exercise price of the warrants. Upon receipt of the first term loan in June 2023,94,222 shares became exercisable to Hercules with a fair market value of $0.7 million.

The Loan Agreement includes a financial covenant requiring us to maintain a minimum level of $22.5 million of cash during the period commencing on July 1, 2024 (subject to adjustment if certain performance milestones are met). If the Company meets the performance milestones, the minimum cash covenant will not apply if its market capitalization is at least $750.0 million. The Company was in compliance with all covenants of the Loan Agreement as of September 30, 2025 and December 31, 2024.

Long-term debt consisted of the following (in thousands):

Future principal payments, including End of Term Charge, are as follows (in thousands):

Interest expense associated with the Loan Agreement for the nine months ended September 30, 2025 and 2024 was $3.4 million and $3.3 million, respectively.

5. Fair Value Measurements

The following table presents, as of September 30, 2025, information about the Company’s warrant liabilities that are measured at fair value on a recurring basis, and indicates the fair value hierarchy of the valuation inputs the Company utilized to determine such fair value:

The Pre-funded Warrants and 2025 ADS Warrants are accounted for as liabilities in accordance with ASC 815-40, Derivatives and Hedging, Contracts in Entity’s Own Equity(“ASC 815-40”), as both warrants contain contingent exercise provisions that do not meet the requirements of the indexation guidance under ASC 815-40 and could require the Company to pay cash to settle the warrants. The warrants are presented within warrant liabilities in the accompanying condensed consolidated balance sheets. The warrant liabilities were measured at fair value at inception and on a recurring basis, with changes in fair value presented within the condensed consolidated statements of operations and comprehensive loss.

The Pre-funded Warrants are considered to be Level 2 in the fair value hierarchy as the inputs used to determine fair market value are observable against the Company’s stock price. The 2025 ADS Warrant are considered to be Level 3 in the fair value hierarchy as they have been recorded at fair value using the Black-Scholes model, using unobservable assumptions that have been probability-weighted for specified data milestones. As of September 30, 2025, the assumptions are as follows:

The following table reflects the fair value of the Company’s warrant liabilities for the nine months ended September 30, 2025:

The fair value change of warrant liabilities at September 30, 2025 was $84.4 million, which included a $1.6 million loss upon issuance of the Pre-funded warrants and a $82.8 million loss in fair value between the initial fair value and the fair value as of the balance sheet date. During the nine months ended September 30, 2025, there were no transfers between Level 1, Level 2 and Level 3.

6. Shareholders’ Equity

Ordinary Shares

Each ordinary share entitles the holder to one vote on all matters submitted to a vote of the Company’s shareholders. Ordinary shareholders are entitled to receive dividends, if any, as may be declared by the board of directors. Through September 30, 2025, no cash dividends had been declared or paid by the Company.

At-the-Market Facility

On October 8, 2021, the Company entered into a Sales Agreement with Cowen and Company, LLC, or Cowen, under which the Company was permitted to issue and sell from time to time up to $150.0 million of its ADSs, each representingone ordinary share, through Cowen as the sales agent. Pursuant to the Sales Agreement dated October 8, 2021, through February 27, 2025, we sold 5,491,836 ADSs underour ATM offering program, resulting in $54.8 million in net proceeds. On February 27, 2025, the Company entered into a new Sales Agreement under which the Company may issue and sell from time to time up to $150.0 million of our ADSs, subject to the terms of the Sales Agreement. Sales of the Company’s ADSs, if any, will generally be made at market prices. To date, the Company has not sold any ADSs under this Sales Agreement.

Warrants

Equity-classified

On June 30, 2023, the Company entered into a Warrant Agreement with Hercules, which provides Hercules with the right to purchase a number of the Company’s Ordinary Shares, equal to the quotient derived by dividing (i) the amount equal to (a)2.5% times (b) the aggregate principal amount of term loan advances made and funded under the Loan Agreement by (ii) the exercise price. Upon receipt of each term loan, the Warrant will automatically become exercisable and will expire in 10 years (on June 30, 2033). On June 30, 2023, with the receipt of the first term loan,94,222 shares became exercisable to Hercules with a fair market value of $0.7 million.

On August 18, 2023, in connection with the PIPE, the Company issued and sold warrants to purchase up to 16,076,750 ADSs, each representingone ordinary share, at a purchase price of $9.93 per ADS. The PIPE Warrants became exercisable for athree year period beginning in February 2024. Through September 30, 2025, PIPE Warrants were exercised for 3,752,050 ADSs, resulting in $37.3 million in exercise proceeds. During the three months ended September 30, 2025, no PIPE warrants were exercised.

Liability-classified

On January 13, 2025, in connection with the 2025 Financing, the Company issued and sold (i)24,014,728 ADSs, each representingone ordinary share, (ii) in lieu of ADSs, Pre-funded Warrants to purchase up to 11,044,720 ADSs, and (iii) accompanying 2025 ADS Warrants to purchase up to 11,044,720 ADSs, each representing one ordinary share. The Pre-funded Warrants have an exercise price of $0.0001 per ADS and are exercisable immediately. The Pre-funded Warrants expire when exercised in full. The 2025 ADS Warrants have an exercise price of $5.7960 per ADS and are exercisable following a specified data milestone. The 2025 ADS Warrants will expire three years after such warrants become exercisable. Once the ADS Warrants become exercisable, the Company may force the exercise of the 2025 ADS Warrants (by way of cash or cashless exercise, at the Company’s option), in whole or in part, by delivering a notice of forced exercise to the holders, provided that the closing price for the Company’s ADSs on Nasdaq exceeded the warrant exercise price of $5.796 for thethree consecutive trading days prior to the date on which the notice of forced exercise is delivered. During the three months ended September 30, 2025,2,344,720 Pre-funded Warrants were exercised, resulting in a $10.2 million reduction in warrant liabilities.

The 2025 Financing comprising of ADSs, Pre-funded Warrants and 2025 ADS Warrants, resulted in aggregate proceeds of $149.8 million, with issuance costs of $9.4 million. Since the Pre-funded Warrants and 2025 ADS Warrants have been classified as a liability and recorded at fair value with changes in fair value recorded in the condensed consolidated income statement, the aggregate proceeds have been allocated first to these warrants at their respective fair values at the issuance date. The residual has been allocated to the ADSs issued as part of the 2025 Financing and recognized within equity.

7. Share-Based Compensation

2017 Equity Incentive Plan

Under the Company’s historical shareholder and subscription agreements, the Company was authorized to issue restricted shares, restricted share units, as well as options, as incentives to its employees, non-employees and members of its board of directors.

As of September 30, 2025, the Company was authorized to issue a total of 440,101 ordinary shares underlying outstanding options granted under the 2017 Plan prior to our initial public offering, or IPO.

2020 Employee Share Purchase Plan

The Company’s 2020 Employee Share Purchase Plan, or the ESPP, provides that the number of shares reserved and available for issuance will automatically increase each January 1, beginning on January 1, 2022 and each January 1 thereafter through termination of the 2020 Plan, by the lesser of (i)1% of the outstanding number of ordinary shares on the immediately preceding December 31, (ii)510,080 ordinary shares or (iii) such lesser number of ordinary shares as determined by the plan administrator.

2020 Share Option Plan

The Company’s 2020 Share Option and Incentive Plan, or the 2020 Plan, allows the compensation and leadership development committee to make equity-based, including options and restricted share units, and cash-based incentive awards to the Company’s officers, employees, directors and other key persons (including consultants).

The Company initially reserved 2,074,325 of its ordinary shares for the issuance of awards under the 2020 Plan. The 2020 Plan provides that the number of shares reserved and available for issuance under the plan will automatically increase each January 1, beginning on January 1, 2022, by up to 4% of the outstanding number of ordinary shares on the immediately preceding December 31, or such lesser number of shares as determined by the Company’s compensation and leadership development committee. The total number of ordinary shares that were authorized for issuance under the 2020 Plan is 10,680,217 shares as of September 30, 2025, of which 2,697,219 shares remained available for future grant.

2022 Inducement Option Award

During 2022, the Company granted a non-qualified share option to purchase up to 600,000 ordinary shares as an inducement grant to our chief executive officer.

Share-based compensation expense recorded as research and development and general and administrative expenses is as follows (in thousands):

8. Net Loss Per Share

The Company computes basic net loss per share by dividing net loss by the weighted-average number of shares outstanding. The Company computes diluted net loss per share by dividing net loss by the weighted-average number of shares and dilutive potential share equivalents then outstanding during the period. The Company’s potentially dilutive securities, which include unvested ordinary shares, unvested restricted share units, options granted and warrants, have been excluded from the computation of diluted net loss per share as the effect would be to reduce the net loss per share. Therefore, the weighted-average number of ordinary shares outstanding used to calculate both basic and diluted net loss per share attributable to ordinary shareholders is the same.

The Company excluded the following potential ordinary shares, presented based on amounts outstanding at each period end, from the computation of diluted net loss per share attributable to ordinary shareholders for the periods presented because including them would have had an anti-dilutive effect:

9. Commitments and Contingencies

Legal Proceedings

From time to time, the Company may be a party to litigation or subject to claims incident to the ordinary course of business. The Company was not a party to any material litigation and did not have material contingency reserves established for any liabilities as of September 30, 2025 or December 31, 2024.

Indemnification

In the ordinary course of business, the Company enters into agreements that may include indemnification provisions. Pursuant to such agreements, the Company may indemnify, hold harmless and defend an indemnified party for losses suffered or incurred by the indemnified party. Some of the provisions will limit losses to those arising from third party actions. In some cases, the indemnification will continue after the termination of the agreement. The maximum potential amount of future payments the Company could be required to make under these provisions is not determinable. The Company has not incurred material costs to defend lawsuits or settle claims related to these indemnification provisions. The Company has also entered into deeds of indemnity with its directors and officers that may require the Company to indemnify its directors and officers against liabilities that may arise by reason of their status or service as directors or officers in accordance with the indemnification obligations under its Articles of Association. The Company currently has directors’ and officers’ insurance.

10. Segment Reporting

The Company hasone operating segment. The table below is a summary of the segment loss, including significant segment expenses (in thousands):

1 Other expenses include subscriptions and memberships, consulting fees and company insurance.