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    SEC Form 10-Q filed by Prime Medicine Inc.

    5/8/25 8:08:14 AM ET
    $PRME
    Biotechnology: Biological Products (No Diagnostic Substances)
    Health Care
    Get the next $PRME alert in real time by email
    prme-20250331
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    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, 2025
    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 001-41536
    Prime Medicine, Inc.
    (Exact name of registrant as specified in its charter)
    Delaware
    84-3097762
    (State or other jurisdiction of incorporation or organization)
    (I.R.S. Employer Identification No.)
    60 First Street, Cambridge, MA
    02141
    (Address of principal executive offices)
    (Zip code)
    (617) 465-0013
    (Registrant’s telephone number, including area code)
    Not applicable
    (Former name, 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, par value $0.00001 per sharePRMENasdaq Global Market
    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, or a smaller reporting 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 April 30, 2025, the registrant had 131,294,454 shares of common stock, par value $0.00001 per share, outstanding.



    SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS
    This Quarterly Report on Form 10-Q contains express or implied statements which are made pursuant to the safe harbor provisions of Section 27A of the Securities Act of 1933, as amended, (the “Securities Act”) and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). All statements, other than statements of historical facts, contained in this Quarterly Report on Form 10-Q, including statements regarding our strategy, future operations, future financial position, future revenue, projected costs, prospects, plans, and objectives of management, are forward-looking statements, which are based on management’s belief and assumptions and on information currently available to our management. These statements involve substantial risks, assumptions and uncertainties. The words “anticipate,” “believe,” “envision,” “estimate,” “expect,” “goal,” “intend,” “may,” “plan,” “predict,” “project,” “strategy,” “target,” “potential,” “will,” “would,” “could,” “should,” “continue,” “contemplate,” “vision” 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 Quarterly Report on Form 10-Q include statements about:
    •the initiation, timing, progress and results of our research and development programs, product candidates, preclinical studies and future clinical trials;
    •our ability to demonstrate, and the timing of, preclinical proof-of-concept in vivo for multiple programs;
    •our ability to advance any current and future product candidates that we may identify and successfully complete any clinical studies, including the manufacture of any such product candidates;
    •our ability to pursue our areas of focus and any other additional programs we may advance;
    •our ability to quickly leverage programs within our initial target indications and to progress additional programs to further develop our pipeline;
    •the timing of our investigational new drug application (“IND”) submissions;
    •the ability of our Prime Editing technology to address unmet medical needs in patients;
    •the implementation of our strategic plans for our business, programs and technology;
    •the scope and duration of protection we are able to establish and maintain for intellectual property rights covering our Prime Editing technology;
    •developments related to our competitors and our industry;
    •our ability to leverage the clinical, regulatory, and manufacturing advancements made by gene therapy and gene editing programs to accelerate our clinical trials and approval of product candidates;
    •our ability to maintain collaborations or strategic relationships and the ability to identify and enter into future license agreements and collaborations;
    •developments related to our Prime Editing technology;
    •regulatory developments in the United States and foreign countries;
    •our ability to attract and retain key scientific and management personnel;
    •our estimates of our expenses, capital requirements, needs for additional financing;
    •the effect of unfavorable macroeconomic conditions or market volatility resulting from national or global economic conditions or geopolitical developments, including rising inflation and capital market disruptions, changes in U.S. governmental agencies, new or increased international tariffs and retaliatory tariffs, trade protection measures, economic sanctions and economic slowdowns or recessions;



    •our expectations regarding the anticipated timeline of our cash runway, future financial performance and our ability to continue as a going concern; and
    •other risks and uncertainties, including those listed under the caption “Risk Factors.”
    We may not actually achieve the plans, intentions or expectations disclosed in our forward-looking statements, and these statements may be affected by inaccurate assumptions or by known or unknown risks and uncertainties. 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 Quarterly Report on Form 10-Q and in subsequent SEC filings, particularly in the “Risk Factors” section, that we believe could cause actual results or events to differ materially from the forward-looking statements that we make. Unless otherwise disclosed, our forward-looking statements do not reflect the potential impact of any future acquisitions, mergers, dispositions, collaborations, joint ventures or investments we may make or enter into.
    You should read this Quarterly Report on Form 10-Q and the documents that we reference herein and have filed as exhibits to our other filings with the Securities and Exchange Commission (the “SEC”) completely and with the understanding that our actual future results may be materially different from what we expect. The forward-looking statements contained in this Quarterly Report on Form 10-Q are made as of the date hereof, and we do not assume any obligation to update any forward-looking statements, whether as a result of new information, future events or otherwise after the date of such statements, except as required by applicable law.
    This Quarterly Report on Form 10-Q also contains estimates, projections and other information concerning our industry, our business and the markets for our product candidates. Such information is inherently subject to uncertainties and actual events or circumstances may differ materially from events and circumstances that are assumed in this information. Unless otherwise expressly stated, we obtained statistical and other industry and market data from our own internal estimates and research, as well as from reports, industry publications and research, surveys, studies and similar data prepared by market research firms and other third parties, industry, medical and general publications, government data and similar sources. While we are not aware of any misstatements regarding any third-party information presented in this Quarterly Report on Form 10-Q, their estimates, in particular as they relate to projections, involve numerous assumptions, are subject to risks and uncertainties and are subject to change based on various factors, including those discussed under the section titled “Risk Factors” set forth in Part II, Item 1A of this Quarterly Report on Form 10-Q, if any, our Annual Report on Form 10-K that was filed with the SEC on February 28, 2025, and in other SEC filings.



    PRIME MEDICINE, INC.
    FORM 10-Q
    FOR THE THREE MONTHS ENDED MARCH 31, 2025
    TABLE OF CONTENTS

    Page
    PART I - FINANCIAL INFORMATION
    5
    Item 1.
    Financial Statements (unaudited)
    5
    Condensed Consolidated Balance Sheets as of March 31, 2025 and December 31, 2024
    5
    Condensed Consolidated Statements of Operations and Comprehensive Loss for the Three Months Ended March 31, 2025 and, 2024
    6
    Condensed Consolidated Statements of Stockholders’ Equity for the Three Months Ended March 31, 2025 and, 2024
    7
    Condensed Consolidated Statements of Cash Flows for the Three Months Ended March 31, 2025 and, 2024
    9
    Notes to Condensed Consolidated Financial Statements
    11
    Item 2.
    Management’s Discussion and Analysis of Financial Condition and Results of Operations
    24
    Item 3.
    Quantitative and Qualitative Disclosures About Market Risk
    31
    Item 4.
    Controls and Procedures
    31
    PART II - OTHER INFORMATION
    33
    Item 1.
    Legal Proceedings
    33
    Item 1A.
    Risk Factors
    33
    Item 2.
    Unregistered Sales of Equity Securities and Use of Proceeds
    35
    Item 3.
    Defaults Upon Senior Securities
    35
    Item 4.
    Mine Safety Disclosure
    35
    Item 5.
    Other Information
    35
    Item 6.
    Exhibits
    36
    Signatures
    37
    From time to time we may use our website, our X (formerly known as Twitter) account (@PrimeMedicine) or our LinkedIn profile at https://www.linkedin.com/company/prime-medicine to distribute material information. Our financial and other material information is routinely posted to and accessible on the Investors section of our website, available at www.primemedicine.com. Investors are encouraged to review the Investors section of our website because we may post material information on that site that is not otherwise disseminated by us. Information that is contained in and can be accessed through our website or our social media is not incorporated into, and does not form a part of, this Quarterly Report on Form 10-Q.
    4


    PART I - FINANCIAL INFORMATION
    Item 1. Financial Statements (unaudited)
    PRIME MEDICINE, INC.
    CONDENSED CONSOLIDATED BALANCE SHEETS
    (Unaudited)
    (in thousands, except share and per share amounts)March 31,
    2025
    December 31,
    2024
    Assets
    Current assets:
    Cash and cash equivalents$91,877 $182,476 
    Short-term investments48,467 2,998 
    Short-term investment — related party3,912 4,968 
    Collaboration receivable — related party17 — 
    Prepaid expenses2,948 6,777 
    Other current assets16,544 14,667 
    Total current assets163,765 211,886 
    Property and equipment, net24,956 24,404 
    Operating lease right-of-use assets125,380 47,156 
    Restricted cash14,062 14,062 
    Total assets$328,163 $297,508 
    Liabilities and Stockholders’ Equity
    Current liabilities:
    Accounts payable$10,025 $11,351 
    Accrued expenses and other current liabilities9,191 15,904 
    Deferred revenue — related party8,214 7,092 
    Operating lease liability6,858 3,614 
    Total current liabilities34,288 37,961 
    Deferred revenue, net of current — related party60,658 63,218 
    Operating lease liability, net of current114,293 37,180 
    Research and development funding liability12,000 6,000 
    Total liabilities221,239 144,359 
    Commitments and contingencies
    Stockholders’ equity
    Common stock, par value of $0.00001 per share; 775,000,000 shares authorized; 131,160,842 and 131,160,842 shares issued and outstanding as of March 31, 2025 and December 31, 2024, respectively
    2 2 
    Additional paid-in capital846,039 840,358 
    Accumulated other comprehensive loss(15)1 
    Accumulated deficit(739,102)(687,212)
    Total stockholders’ equity106,924 153,149 
    Total liabilities and stockholders’ equity$328,163 $297,508 
    The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.
    5



    PRIME MEDICINE, INC.
    CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS
    (Unaudited)
    Three Months Ended
    March 31,
    (in thousands, except share and per share amounts)20252024
    Revenue:
    Collaboration revenue — related party$1,454 $— 
    Collaboration revenue— 591 
    Total revenue1,454 591 
    Operating expenses:
    Research and development40,562 37,774 
    General and administrative13,284 11,158 
    Total operating expenses53,846 48,932 
    Loss from operations(52,392)(48,341)
    Other income:
    Interest income1,182 676 
    Accretion (amortization) of investments339 830 
    Change in fair value of short-term investment — related party(1,056)1,166 
    Other income, net37 42 
    Total other income, net502 2,714 
    Net loss before income taxes(51,890)(45,627)
    Provision for income taxes— (134)
    Net loss attributable to common stockholders$(51,890)$(45,761)
    Net loss per share attributable to common stockholders, basic and diluted$(0.40)$(0.44)
    Weighted-average common shares outstanding, basic and diluted130,884,490 104,466,178 
    Comprehensive loss:
    Net loss$(51,890)$(45,761)
    Change in unrealized loss on investments, net of tax(16)(80)
    Comprehensive loss$(51,906)$(45,841)
    The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.
    6


    PRIME MEDICINE, INC.
    CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY
    (Unaudited)
    Common StockAdditional
    Paid-in
    Capital
    Accumulated Other
    Comprehensive
    Losses
    Accumulated
    Deficit
    Total
    Stockholders’
    Equity
    (in thousands, except share amounts)SharesAmount
    Balance as of December 31, 2024131,160,842 $2 $840,358 $1 $(687,212)$153,149 
    Stock-based compensation expense— — 5,681 — — 5,681 
    Change in unrealized loss on investments, net of tax— — — (16)— (16)
    Net loss— — — — (51,890)(51,890)
    Balance as of March 31, 2025131,160,842 $2 $846,039 $(15)$(739,102)$106,924 
    The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.
    7


    PRIME MEDICINE, INC.
    CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY
    (Unaudited)
    Common StockAdditional
    Paid-in
    Capital
    Accumulated Other
    Comprehensive
    Losses
    Accumulated
    Deficit
    Total
    Stockholders’
    Equity
    (in thousands, except share amounts)SharesAmount
    Balance as of December 31, 202397,377,121 $2 $624,414 $(15)$(491,330)$133,071 
    Issuance of common stock from public offering, net of issuance costs of $8.9 million
    22,560,001 — 132,055 — — 132,055 
    Issuance of pre-funded warrants, net of issuance costs of $1.2 million
    — — 18,800 — — 18,800 
    Issuances of common stock under the employee stock purchase plan74,488 — 436 — — 436 
    Issuance of common stock upon exercise of stock options9,664 — 36 — — 36 
    Stock-based compensation expense— — 5,209 — — 5,209 
    Change in unrealized loss on investments, net of tax— — — (80)— (80)
    Net loss— — — — (45,761)(45,761)
    Balance as of March 31, 2024120,021,274 2 780,950 (95)(537,091)243,766 
    The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.
    8



    PRIME MEDICINE, INC.
    CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
    (Unaudited)
    Three Months Ended
    March 31,
    (in thousands)20252024
    Cash flows used in operating activities:
    Net loss$(51,890)$(45,761)
    Adjustments to reconcile net loss to net cash used in operating activities
    Stock-based compensation expense5,681 5,209 
    Non cash lease expense2,413 3,348 
    Depreciation expense1,700 1,315 
    Change in fair value of short-term investment — related party1,056 (1,166)
    Amortization of premiums and discount on short-term investments(164)(675)
    Deferred income taxes— 134 
    Changes in operating assets and liabilities:
    Collaboration receivable — related party(17)— 
    Prepaid expenses and other current assets(789)(2,794)
    Accounts payable1,884 (5,880)
    Accrued expenses and other current liabilities(6,655)(4,475)
    Accrued settlement payment — related party— (13,500)
    Deferred revenue — related party(1,438)— 
    Lease liabilities(638)(3,462)
    Net cash used in operating activities(48,857)(67,707)
    Cash flows used in investing activities:
    Maturities of investments3,000 72,500 
    Purchases of investments(48,320)(107,208)
    Purchases of property and equipment(2,422)(2,324)
    Net cash used in investing activities(47,742)(37,032)
    Cash flows provided by financing activities:
    Proceeds from research and development funding liability6,000 6,000 
    Proceeds from follow-on offering, net of issuance costs— 132,055 
    Proceeds from issuance of pre-funded warrants, net of issuance costs— 18,800 
    Proceeds from ESPP offerings— 436 
    Net proceeds from stock option exercises— 36 
    Net cash provided by financing activities6,000 157,327 
    Net change in cash, cash equivalents, and restricted cash(90,599)52,588 
    Cash, cash equivalents, and restricted cash at beginning of period196,538 55,070 
    Cash, cash equivalents, and restricted cash at end of period$105,939 $107,658 
    The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.
    9



    PRIME MEDICINE, INC.
    CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
    (Unaudited)
    Three Months Ended
    March 31,
    (in thousands)20252024
    Reconciliation of cash, cash equivalents and restricted cash:
    Cash, cash equivalents, and restricted cash at end of period$105,939 $107,658 
    Less: restricted cash14,062 13,496 
    Total cash, and cash equivalents$91,877 $94,162 
    Supplemental cash flow information:
    Right-of-use assets obtained in exchange for new operating lease liabilities$83,757 $44,935 
    Decrease in right-of-use assets due to lease termination$3,120 $— 
    Supplemental disclosure of non-cash investing and financing activities:
    Purchases of property and equipment included in accounts payable and accrued expenses$985 $833 
    The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.
    10



    PRIME MEDICINE, INC.
    NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
    (Unaudited)
    1.Nature of the Business and Basis of Presentation
    Prime Medicine, Inc., together with its consolidated subsidiary (the “Company”) is a biotechnology company committed to delivering a new class of differentiated one-time curative genetic therapies. The Company is deploying Prime Editing technology, which it believes is a versatile, precise, and efficient gene editing technology. The Company was incorporated in the State of Delaware in September 2019. Its principal offices are in Cambridge, Massachusetts.
    Liquidity and Capital Resources
    Since its inception, the Company has devoted substantially all of its resources to building its Prime editing platform and advancing development of its portfolio of programs, establishing and protecting its intellectual property, conducting research and development activities, organizing and staffing the company, business planning, raising capital and providing general and administrative support for these operations. To date, the Company has funded its operations primarily with proceeds from sales of preferred stock and from public offerings of its common stock, and through payments from our collaboration partners.
    Since its inception, the Company has incurred substantial losses and, as of March 31, 2025, the Company had an accumulated deficit of $739.1 million. The Company expects to generate operating losses and negative operating cash flows for the foreseeable future. As of March 31, 2025, the Company maintains cash, cash equivalents, and investments of $144.3 million.
    Going Concern
    In accordance with Accounting Standards Codification (“ASC”) 205-40, Going Concern, (“ASC 205-40”) the Company evaluated whether there are conditions and events, considered in the aggregate, that raise substantial doubt about the Company’s ability to continue as a going concern within one year after the date on which this Quarterly Report on Form 10-Q is filed. Based on the Company's cash, cash equivalents, short-term investments, and related party short-term investments as of March 31, 2025, the Company's current and forecasted level of operations, and its forecasted cash flows, management has determined that substantial doubt exists about the Company’s ability to continue as a going concern for 12 months from the date these condensed consolidated financial statements are issued. The Company’s ability to continue as a going concern is dependent upon its ability to obtain the necessary financing to meet its obligations and repay its liabilities arising from normal business operations when they come due, and to generate profitable operations in the future. Management plans to provide for the Company’s capital requirements through financing or other transactions, and selling shares under the Company's “at the market offering” program. There can be no assurance that the Company will be able to raise additional capital to fund operations with terms acceptable to the Company, or at all. Because certain elements of management’s plans to mitigate the conditions that raised substantial doubt about the Company’s ability to continue as a going concern are outside of the Company’s control, including the ability to raise capital through an equity or other financing, those elements cannot be considered probable according to ASC 205-40, and therefore cannot be considered in the evaluation of mitigating factors.
    The condensed consolidated financial statements as of March 31, 2025 have been prepared under the assumption that the Company will continue as a going concern for the next 12 months and that contemplates the realization of assets and satisfaction of liabilities and commitments in the normal course of business. The Company’s ability to continue as a going concern is dependent upon its uncertain ability to obtain additional capital, reduce expenditures and/or execute on its business plan. These condensed consolidated financial statements do not include any adjustments that might result from the outcome of this uncertainty.
    11


    Risks and Uncertainties
    The Company is subject to risks and uncertainties common to early stage companies in the biotechnology industry, including, but not limited to, completing preclinical studies and clinical trials, obtaining regulatory approval for product candidates, market acceptance of products, development by competitors of new technological innovations, dependence on key personnel, the ability to attract and retain qualified employees, reliance on third-party organizations, protection of proprietary technology, compliance with government regulations, and the ability to raise additional capital to fund operations. The Company’s product candidates currently under development will require significant additional research and development efforts, including extensive preclinical and clinical testing and regulatory approval prior to commercialization. These efforts require significant amounts of additional capital, adequate personnel and infrastructure, and extensive compliance-reporting capabilities. Even if the Company’s development efforts are successful, it is uncertain when, if ever, the Company will realize significant revenue from product sales.
    The Company will need to raise additional capital to support its continuing operations and to pursue its growth strategy. Until such time as the Company can generate significant revenue from product sales, if ever, it expects to finance its operations through a combination of equity offerings, debt financings, collaborations, strategic alliances and licensing arrangements. The Company may be unable to raise additional capital or enter into such other agreements when needed on favorable terms or at all. The inability to raise capital as and when needed would have a negative impact on the Company’s financial condition and its ability to pursue its business strategy. The Company will need to generate significant revenue to achieve profitability, and it may never do so.
    Basis of Presentation
    The accompanying condensed consolidated financial statements reflect the operations of the Company and its wholly-owned subsidiary. Intercompany balances and transactions have been eliminated in consolidation. The accompanying condensed consolidated financial statements have been prepared in conformity with generally accepted accounting principles in the United States of America (“U.S. GAAP”). Any reference in these notes to applicable guidance is meant to refer to the authoritative GAAP as found in the ASC and Accounting Standards Updates (“ASU”) of the Financial Accounting Standards Board (“FASB”).
    The accompanying condensed consolidated financial statements of Prime Medicine, Inc. are unaudited. The unaudited interim condensed consolidated financial statements have been prepared on the same basis as the audited annual consolidated financial statements and, in the opinion of management, reflect all adjustments, which include only normal recurring adjustments, necessary for the fair statement of the Company’s financial position as of March 31, 2025, the results of its operations for the three months ended March 31, 2025 and 2024, the condensed consolidated statements of stockholders’ equity for the three months ended March 31, 2025 and 2024, and its cash flows for the three months ended March 31, 2025 and 2024. The financial data and other information disclosed in these notes related to the three months ended March 31, 2025 and 2024 are also unaudited. The results for the three months ended March 31, 2025 are not necessarily indicative of results to be expected for the year ending December 31, 2025, any other interim periods, or any future year or period. The condensed consolidated balance sheet data as of December 31, 2024 was derived from our audited financial statements, but does not include all disclosures required by U.S. GAAP. These interim financial statements should be read in conjunction with the audited financial statements as of and for the year ended December 31, 2024, and notes thereto, which are included in the Company’s Annual Report on Form 10-K that was filed with the Securities and Exchange Commission (the “SEC”) on February 28, 2025.
    Change in Presentation
    For the three months ended March 31, 2025, “Other income, net” as presented on the condensed consolidated statements of operations and comprehensive loss was disaggregated into “Accretion (amortization) of investments,” “Interest income,” and “Other income, net.” This presentation has been conformed for all previous periods presented and had no impact on previously reported results.
    12


    2.Summary of Significant Accounting Policies
    The Company’s significant accounting policies are disclosed in Note 2, Summary of significant accounting policies, in the audited consolidated financial statements for the year ended December 31, 2024, and notes thereto, included in the Company’s Annual Report on Form 10-K that was filed with the SEC on February 28, 2025. Since the date of those financial statements, there have been no material changes to its significant accounting policies, except as noted below.
    Use of Estimates
    The preparation of the Company’s 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 and the disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting periods. Significant estimates and assumptions reflected within these condensed consolidated financial statements include, but are not limited to, the valuation of the Company’s common stock and stock-based awards. The Company bases its estimates on historical experience, known trends and other market-specific or other relevant factors that it believes to be reasonable under the circumstances. On an ongoing basis, management evaluates its estimates, as there are changes in circumstances, facts and experience. Actual results may differ materially from those estimates or assumptions.
    Segment Information
    Under ASC 280, Segment Reporting, operating segment is a component of a public entity that 1) engages in business activities from which it may recognize revenues and incur expenses, 2) its operating results are regularly reviewed by the entity’s chief operating decision maker (“CODM”) to make decisions about resource allocation or performance assessment, and 3) its discrete financial information is available. The Company operates and manages its business as a single segment for the purposes of assessing performance and making operating decisions.
    Our chief executive officer, who is the CODM, manages and allocates resources to the operations of our company on a total company basis by assessing the overall level of resources available and how to best deploy these resources across functions and research and development projects that are in line with our long-term company-wide strategic goals. In making these decisions, the CODM uses consolidated financial information for purposes of evaluating performance, forecasting future period financial results, allocating resources and setting incentive targets. The CODM performs this assessment based on the Company’s consolidated net loss. Through this analysis, the CODM assesses performance by comparing actual net loss verses the budget, and then decides how to allocate resources to invest in the Company’s research and development programs. The measure of segment assets is reported on the consolidated balance sheets as total assets.
    13


    The following table contains additional information on our consolidated net loss, including significant segment expenses:
    Three Months Ended March 31,
    (in thousands)20252024
    Total revenue$1,454 $591 
    Operating expenses:
    Research and development expenses
    Personnel expenses14,800 15,007 
    Facility related10,969 7,334 
    Research costs11,036 11,619 
    General and administrative expenses:
    Personnel expenses7,156 5,884 
    Other segment items (1)
    9,885 9,088 
    Total operating expenses53,846 48,932 
    Total other income, net502 2,714 
    Provision for income taxes— (134)
    Net loss$(51,890)$(45,761)
    (1) Other segment items consist of professional and consultant fees, license and intellectual property fees, general and administrative facility costs, and settlement costs.
    Recently Issued Accounting Pronouncements Not Yet Adopted
    In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, which requires enhanced income tax disclosures, including specific categories and disaggregation of information in the effective tax rate reconciliation, disaggregated information related to income taxes paid, income or loss from continuing operations before income tax expense or benefit, and income tax expense or benefit from continuing operations. This guidance is effective for annual periods beginning after December 15, 2024, with early adoption permitted. The Company is currently in the process of evaluating the impact of this pronouncement on its related disclosures.
    In November 2024, the FASB issued ASU 2024-03, Disaggregation of Income Statement Expenses, which requires more detailed information about specified categories of expenses included in certain expense captions presented on the face of the income statement. This ASU is effective for fiscal years beginning after December 15, 2026, and for interim periods within fiscal years beginning after December 15, 2027. Early adoption is permitted. The amendments may be applied either (1) prospectively to financial statements issued for reporting periods after the effective date of this ASU or (2) retrospectively to all prior periods presented in the financial statements. The Company is currently evaluating the impact this ASU will have on its disclosures.
    Other accounting standards that have been issued by the FASB or other standards-setting bodies that do not require adoption until a future date are not expected to have a material impact on the Company’s financial statements upon adoption.
    14


    3.Fair Value Measurements and Investments
    The following tables present the Company’s fair value hierarchy for its assets that are measured at fair value on a recurring basis and indicate the level of the fair value hierarchy utilized to determine such fair value:
    As of March 31, 2025:
    (in thousands)Level 1Level 2Level 3Total
    Cash equivalents:
    Money market funds$— $62,610 $— $62,610 
    U.S. Treasury and government securities— 20,797 — 20,797 
    Corporate debt securities— 7,783 — 7,783 
    Short-term investments:
    U.S. Treasury and government securities— 38,583 — 38,583 
    Corporate debt securities— 9,884 — 9,884 
    Related party short-term investment:
    Beam equity securities3,912 — — 3,912 
    Total cash equivalents and investments$3,912 $139,657 $— $143,569 
    As of December 31, 2024:
    (in thousands)Level 1Level 2Level 3Total
    Cash equivalents:
    Money market funds$— $178,212 $— $178,212 
    Corporate debt securities— 3,793 — 3,793 
    Short-term investment:
    U.S. Treasury and government securities— 2,998 — 2,998 
    Related party short-term investment:
    Beam equity securities4,968 — — 4,968 
    Total cash equivalents and investments$4,968 $185,003 $— $189,971 
    The Company classifies its investments as short-term based on each instrument’s underlying contractual maturity date. The fair value of investments classified as Level 2 are valued using observable inputs to quoted market prices, benchmark yields, reported trades, broker/dealer quotes or alternative pricing sources with reasonable levels of price transparency.
    Investments in Debt Securities
    Unrealized gains and losses of investments in debt securities consisted of the following:
    As of March 31, 2025:
    (in thousands)Amortized CostUnrealized GainsUnrealized LossesFair Value
    Short-term investments in debt securities:
    U.S. Treasury and government securities$38,595 $— $(12)$38,583 
    Corporate debt securities9,887 — (3)9,884 
    Total short-term investments in debt securities$48,482 $— $(15)$48,467 
    15


    As of December 31, 2024:
    (in thousands)Amortized CostUnrealized GainsUnrealized LossesFair Value
    Short-term investments:
    U.S. Treasury and government securities$2,997 $1 $— $2,998 
    Total short-term investments in debt securities$2,997 $1 $— $2,998 
    The contractual maturities of the Company’s investments in debt securities held were as follows:
    (in thousands)March 31,
    2025
    December 31,
    2024
    Due within one year$48,467 $2,998 
    Marketable securities in unrealized loss positions consisted of the following:
    As of March 31, 2025:
    (in thousands, except number of securities)Number of SecuritiesFair ValueGross Unrealized Losses
    Investments in continuous loss position for less than 12 months:
    U.S. Treasury and government securities11 $38,583 $(12)
    Corporate debt securities10 $9,884 $(3)
    Based on factors such as historical experience, market data, issuer-specific factors, and current economic conditions, the Company did not record an allowance for credit losses as of March 31, 2025 related to these investments. Further, given the lack of significant change in the credit risk, the Company does not consider these investments to be impaired.
    4.Property and Equipment, Net
    Property and equipment, net consisted of the following:
    (in thousands)March 31,
    2025
    December 31,
    2024
    Property and equipment:
    Laboratory equipment$28,093 $27,343 
    Leasehold improvement8,269 5,136 
    Furniture and Fixture1,800 1,075 
    Computer hardware and software1,010 869 
    Construction in progress1,081 3,578 
    Total property and equipment40,253 38,001 
    Less: Accumulated depreciation(15,297)(13,597)
    Total property and equipment, net$24,956 $24,404 
    Depreciation expense related to property and equipment is as follows:
    Three Months Ended March 31,
    (in thousands)20252024
    Depreciation Expense$1,700 $1,315 
    16


    5.Accrued Expenses and Other Current Liabilities
    Accrued expenses and other current liabilities consisted of the following:
    (in thousands)March 31,
    2025
    December 31,
    2024
    Accrued expenses and other current liabilities
    Employee compensation and benefits$4,179 $8,976 
    Research and clinical costs
    1,977 907 
    Facility related317 2,811 
    License fee— 1,938 
    Other2,718 1,272 
    Total accrued expenses and other current liabilities$9,191 $15,904 
    6.Leases
    The Company leases office and laboratory space under various non-cancelable operating leases. The Company’s significant lease agreements are disclosed in Note 9, Leases, in the audited consolidated financial statements for the year ended December 31, 2024, and notes thereto, included in the Company’s Annual Report on Form 10-K that was filed with the SEC on February 28, 2025. Since the date of those financial statements, there have been no changes to the Company’s significant agreements except as described below.
    60 First Street, Cambridge, Massachusetts Lease
    In November 2021, the Company entered into a lease for three floors of office and laboratory space in Cambridge, Massachusetts, with rent commencing in March 2024, subject to any credits pursuant to the terms of the lease (the “60 First Street Lease”). Subsequent to the initial non-cancelable term of the lease of ten years, the Company has an option to extend the lease for an additional period of ten years with the rent during the extension term being the then fair market rent. The Company secured the lease with a $13.1 million security deposit, which was recorded as restricted cash on the condensed consolidated balance sheets as of March 31, 2025 and December 31, 2024.
    Accounting Considerations
    The Company determined that the lease contained three separate lease components, each of which represents a right of use that the Company can benefit from on its own and neither of which are highly dependent nor highly related to each other. The Company allocated the consideration among the three lease components based on their relative fair market values.
    In accordance with ASC 842, Leases, the lease commenced for one of the lease components in March 2024 and the Company recorded a right-of-use asset of $44.9 million, and a corresponding lease liability of $33.6 million on the lease commencement date; this included a reclass of $11.3 million from prepaid expenses to right-of-use asset related to build out costs which were determined to be owned by the lessor. In March 2025, the Company determined that the lease commenced on the remaining two lease components and recorded right-of-use assets of $76.8 million, and a corresponding lease liability of $78.6 million on the lease commencement date. As the exercise of the option to extend the lease term is not reasonably certain, the Company will recognize lease expense for all lease components through February 2034.
    In June 2024, the Company filed a complaint in Massachusetts Superior Court against NW Cambridge Property Owner, LLC (“NWC”), the Company’s landlord at 60 First Street, alleging that NWC had breached the 60 First Street Lease by, among other reasons, refusing to provide the Company with certain rental credits for the late delivery of the leased space. While this lawsuit is pending, the Company has continued to make the disputed payments under the 60 First Street Lease under protest. In March 2025, the Court granted NWC’s motion for judgment on the pleadings, dismissing the Company’s claims against NWC. In April 2025, the Company filed a notice of appeal of the Court’s order granting the motion for judgment on the pleadings and served a motion for leave to amend its complaint on NWC, which is currently pending. Pending a ruling on the amended complaint, the
    17


    disputed payments are recorded within other current assets on the Company’s condensed consolidated balance sheets. Total payments made under dispute was $13.9 million, and $10.8 million as of March 31, 2025 and December 31, 2024, respectively.
    Arsenal Street, Watertown, Massachusetts Leases
    In August 2024, the Company entered into the third amendment to its existing lease for approximately 16,000 square feet of combined laboratory and office space at 480 Arsenal Street, Watertown, Massachusetts (the “480 Arsenal Amendment”). In September 2024, the Company entered into a new lease for approximately 48,500 square feet of combined laboratory and office space at 500 Arsenal Street, Watertown, Massachusetts (the “500 Arsenal Lease”). The landlords of the spaces at 480 Arsenal Street and 500 Arsenal Street are affiliates.
    The 480 Arsenal Amendment provides the Company with an additional 9,400 square feet of combined laboratory and office space (the “Expansion Space”) at no additional cost and also provides an early termination date for the existing space and the Expansion Space as the later of: 1) the date occurring 150 days after the lease commencement of 500 Arsenal Lease, or 2) 30 days after substantial completion, as defined in the 500 Arsenal Lease, of tenant improvements at 500 Arsenal Street. If the 500 Arsenal Lease is terminated prior to its lease commencement such that the lease commencement never occurs, the Company will begin paying lease payments on the Expansion Space at the current rate for its existing space at 480 Arsenal Street and the early termination provisions of the 480 Arsenal Amendment become null and void.
    The 500 Arsenal Lease term commenced in December 2024 with a base term of 11 months. In December 2024, the Company began constructing improvements to the space, the construction for which was completed in 2025. Subsequent to the base term, the Company has an option to extend the lease through August 2028, which it exercised in February 2025. The Company secured the lease with a $0.6 million security deposit, which is recorded as restricted cash on the condensed consolidated balance sheets as of March 31, 2025. The 500 Arsenal Lease also provides a tenant improvement allowance of $2.4 million and an additional tenant improvement allowance of $1.2 million, which the Company would be obligated to repay to the landlord. The Company did not use the additional tenant improvement allowance.
    Accounting Considerations
    As the 480 Arsenal Amendment and the 500 Arsenal Lease meet the criteria for combining contracts under ASC 842, the Company determined that both 480 Arsenal Amendment and the 500 Arsenal Lease are modifications to its existing lease at 480 Arsenal Street. Within the combined contract the Company identified two separate lease components, each of which represents a right of use that the Company can benefit from on its own and none which are neither highly dependent nor highly related to the other. The Company allocated the consideration under the combined contract among the two lease components based on their relative fair market value. In calculating the allocable consideration and the fair market value of each lease component, the Company determined it is probable that it will exercise the option to extend the lease term provided under the 500 Arsenal Lease.
    For accounting purposes, as the construction of the lessor assets were completed, the Company determined that the 500 Arsenal Lease commenced in March 2025 and recorded right-of-use assets of $7.0 million, and a corresponding lease liability of $5.5 million on the lease commencement date. Concurrently, the Company also determined that the termination of its leased space at 480 Arsenal Street was reasonably certain, and the Company recorded a $3.1 million reduction to the Company’s operating lease liability and its operating lease right-of-use asset on the condensed consolidated balance sheet.
    18


    The table below reconciles the undiscounted future annual lease payments to the total operating lease liabilities recorded in the condensed consolidated balance sheet as of March 31, 2025:
    (in thousands)Undiscounted
    Amounts
    Undiscounted lease payments:
    Remaining in 2025$15,856 
    202621,703 
    202722,355 
    202822,294 
    202921,478 
    Thereafter96,601 
    Total undiscounted lease payments200,287 
    Less: imputed interest(79,136)
    Total operating lease liability$121,151 
    7.Stockholder’s Equity
    Common Stock
    Under the Company’s Third Amended and Restated of Certificate of Incorporation, as amended, the Company’s common stock had a par value of $0.0001 and each share of common stock entitles the holder to one vote on all matters submitted to the stockholders for a vote. The holders of common stock are entitled to receive dividends, if any, as declared by the Company’s Board of Directors (the “Board of Directors”).
    Pre-funded Warrants
    In February 2024, the Company sold pre-funded warrants to purchase 3,200,005 shares of common stock at a public offering price of $6.24999 per pre-funded warrant, which represents the per share public offering price of each share of common stock less the $0.00001 per share exercise price for each pre-funded warrant. Subject to certain requirements, the pre-funded warrants can be exercised by the holder at any time. As of March 31, 2025, there have not been any exercises of the pre-funded warrants.
    At-The-Market Equity Program
    In November 2023, the Company entered into Open Market Sale AgreementSM (the “Sales Agreement”) with Jefferies LLC, acting as the Company’s agent and/or principal (the “Sales Agent”), with respect to an “at the market offering” program under which the Company may, from time to time, at its sole discretion, issue and sell shares of its common stock having an aggregate offering price of up to $300.0 million through the Sales Agent. As of March 31, 2025, there have been no sales of common stock pursuant to the Sales Agreement.
    8.Stock-Based Compensation
    2019 Equity Incentive Plan
    The Company’s 2019 Stock Option and Grant Plan (the “2019 Plan”) provides for the Company to grant incentive stock options, non-qualified stock options, unrestricted stock awards, restricted stock awards and other stock-based awards to the officers, employees, consultants and other key persons of the Company. The 2019 Plan was administered by the Board of Directors, or at the discretion of the Board of Directors, by a committee of the Board of Directors. The exercise prices, vesting and other restrictions are determined at the discretion of the Board of Directors, or its committee if so delegated.
    In October 2022, in connection with the closing of the Company’s initial public offering (“IPO”), the Board of Directors determined that no further awards would be granted under the 2019 Plan.
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    2022 Stock Option and Incentive Plan
    On February 9, 2022, the Board of Directors adopted, and on October 10, 2022, the Company’s stockholders approved, the 2022 Stock Option and Incentive Plan (the “2022 Plan”), which became effective on October 18, 2022. The 2022 Plan allows the Company to make equity-based and cash-based incentive awards to its officers, employees, directors, and consultants. The 2022 Plan provides for the grant of incentive stock options, non-qualified stock options, stock appreciation rights, restricted stock awards, restricted stock units and other stock-based awards.
    The shares of common stock underlying any awards under the 2022 Plan and the 2019 Plan that are forfeited, cancelled, held back upon exercise or settlement of an award to satisfy the exercise price or tax withholding, reacquired by the Company prior to vesting, satisfied without the issuance of stock, expire, or are otherwise terminated (other than by exercise) will be added back to the shares of common stock available for issuance under the 2022 Plan. The number of shares reserved and available for issuance under the 2022 Plan increased on January 1, 2023 and will increase on each January 1 hereafter, by five percent of the outstanding number of shares of common stock on the immediately preceding December 31 or such lesser number of shares as determined by the Compensation Committee of the Board of Directors. On January 1, 2025, the annual increase resulted in an additional 6,558,042 shares authorized being added to the 2022 Plan. As of March 31, 2025, the Company had 28,080,152 shares reserved under the 2022 Plan and the 2019 Plan, and 11,689,462 shares available for issuance under the 2022 Plan.
    2022 Employee Stock Purchase Plan
    On February 9, 2022, the Board of Directors adopted, and on October 10, 2022, the Company’s stockholders approved, the 2022 Employee Stock Purchase Plan (the “2022 ESPP”), which became effective on October 18, 2022.
    The number of shares of common stock that may be issued under the 2022 ESPP cumulatively increased beginning on January 1, 2023 and shall increase on each January 1 hereafter through January 1, 2032, by the least of (i) 971,350 shares of common stock, (ii) one percent of the outstanding number of shares of common stock on the immediately preceding December 31, or (iii) such number of shares of common stock as determined by the administrator of the 2022 ESPP. There was no annual increase for the 2022 ESPP on January 1, 2025. As of March 31, 2025, the Company had 1,753,191 shares available for issuance under the 2022 ESPP.
    During the three months ended March 31, 2025, the Company issued no shares of the Company’s common stock under the 2022 ESPP.
    Stock Options
    The following table summarizes the Company’s stock option activity for the three months ended March 31, 2025:
    Number of SharesWeighted-Average Exercise Price
    Outstanding at December 31, 202411,410,691 $9.08 
    Granted4,307,544 2.40 
    Exercised— — 
    Cancelled or forfeited(389,275)8.66 
    Outstanding at March 31, 202515,328,960 $7.21 
    Options vested and exercisable at March 31, 20256,026,956 $8.66 
    Options vested and expected to vest at March 31, 202515,328,960 $7.21 
    As of March 31, 2025, there was $40.0 million of total unrecognized compensation cost related to time-based unvested stock options. The Company expects to recognize such amount over a remaining weighted-average period of 2.8 years.
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    Performance-Based Stock Options
    The following table summarizes the Company’s performance-based stock option activity for the three months ended March 31, 2025:
    Number of SharesWeighted-Average
    Grant Date Fair
    Value
    Outstanding at December 31, 20241,061,730 $7.31 
    Granted— — 
    Exercised— — 
    Cancelled or forfeited— — 
    Outstanding at March 31, 20251,061,730 $7.31 
    Vested and exercisable at March 31, 2025590,230 $7.07 
    As of March 31, 2025, there was $3.0 million of total unrecognized compensation cost related to performance-based stock options.
    Performance-Based Restricted Common Stock Awards
    The Company awarded restricted common stock to employees and non-employees under its 2019 Plan. The following table summarizes the Company’s performance-based restricted common stock activity for the three months ended March 31, 2025:
    Number of SharesWeighted-Average Grant-Date Fair Value
    Outstanding at December 31, 20243,472,543 $0.06 
    Issued— — 
    Vested— — 
    Repurchased— — 
    Outstanding at March 31, 20253,472,543 $0.06 
    Stock-Based Compensation
    The following table below summarizes the classification of the Company’s stock-based compensation expense related to stock options and restricted common stock awards in the condensed consolidated statements of operations and comprehensive loss:
    Three Months Ended
    March 31,
    (in thousands)20252024
    Stock-based compensation expense:
    Research and development$2,856 $2,725 
    General and administrative2,825 2,484 
    Total stock-based compensation expense$5,681 $5,209 
    9.Significant Agreements
    The Company’s significant agreements are disclosed in Note 9, License and Collaboration Agreements, in the audited consolidated financial statements for the year ended December 31, 2024, and notes thereto, included in the Company’s Annual Report on Form 10-K that was filed with the SEC on February 28, 2025. Since the date of those
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    financial statements, there have been no changes to the Company’s significant agreements except those discussed below.
    Bristol-Myers Squibb — Related Party
    Supplemental information related to the BMS Collaboration Agreement consisted of the following:
    (in thousands)March 31,
    2025
    December 31,
    2024
    Collaboration receivable — related party$17 $— 
    Deferred revenue — related party$8,214 $7,092 
    Deferred revenue, net of current — related party$60,658 $63,218 
    Three Months Ended March 31,
    (in thousands)20252024
    Revenue recognized that was included in contract liability at the beginning of the period$1,419 $— 
    Revenue recognized from performance obligations fully or partially satisfied in previous periods$— $— 
    As of March 31, 2025, the aggregate amount of the transaction price allocated to performance obligations under the BMS Collaboration Agreement that are partially unsatisfied was $70.3 million. The Company recognizes the portion of the transaction price as the single performance obligation is satisfied, using an input method, in proportion to costs incurred to date as compared to total costs incurred and expected to be incurred in the future to satisfy the underlying obligation.
    10.Net Loss per Share
    Basic and diluted net loss per common share attributable to common stockholders was calculated as follows:
    Three Months Ended
    March 31,
    (in thousands, except share and per share amounts)20252024
    Numerator:
    Net loss attributable to common stockholders$(51,890)$(45,761)
    Denominator:
    Weighted-average common shares outstanding, basic and diluted130,884,490 104,466,178 
    Net loss per share attributable to common stockholders, basic and diluted$(0.40)$(0.44)
    The weighted-average number of common shares outstanding used in the basic and diluted net loss per share calculations includes the weighted-average effect of pre-funded warrants sold by the Company to purchase 3,200,005 shares of the Company's common stock. The shares of common stock underlying the pre-funded warrants are considered outstanding for the purposes of computing earnings per share, because the shares may be issued for little or no consideration, they are fully vested, and the pre-funded warrants are immediately exercisable upon their issuance date.
    Diluted net loss per share available to common stockholders is computed by giving effect to all potentially dilutive common stock equivalents outstanding for the period. For purposes of this calculation, preferred stock, unvested restricted stock and stock options to purchase common stock were considered common stock equivalents but had been excluded from the calculation of diluted net loss per share available to common stockholders as their effect was anti-dilutive. In periods in which the Company reports a net loss available to common stockholders, diluted net loss per share available to common stockholders is the same as basic net loss per share available to common stockholders, since dilutive common shares are not assumed to have been issued if their effect is anti-dilutive.
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    The following common stock equivalents were excluded from the calculation of diluted net loss per share applicable to common stockholders for the periods indicated because including them would have had an anti-dilutive effect:
    As of March 31,
    20252024
    Anti-dilutive common stock equivalents:
    Options to purchase common stock15,919,190 11,522,606 
    Unvested restricted common stock3,472,543 4,406,163 
    Total anti-dilutive common stock equivalents:19,391,733 15,928,769 
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    MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
    You should read the following discussion and analysis of our financial condition and results of operations together with our condensed consolidated financial statements and the related notes thereto included elsewhere in this Quarterly Report on Form 10-Q and our audited consolidated financial statements and notes and Management’s Discussion and Analysis of Financial Condition and Results of Operations, included in our Annual Report on Form 10-K for the year ended December 31, 2024, filed with the SEC on February 28, 2025. As discussed in the section titled “Special Note Regarding Forward-Looking Statements,” the following discussion and analysis contains forward-looking statements that involve risks and uncertainties, such as statements regarding our plans, objectives, expectations, intentions, or projections, as well as assumptions that, if they never materialize or prove incorrect, could cause our results to differ materially from those discussed in these forward-looking statements. Factors that could cause or contribute to such differences include, but are not limited to, those discussed in the “Risk Factors” section of our Annual Report on Form 10-K for the year ended December 31, 2024. Our historical results are not necessarily indicative of the results that may be expected for any period in the future.
    Overview
    We are a biotechnology company committed to delivering a new class of differentiated one-time curative genetic therapies. We are deploying Prime Editing technology, which we believe is a versatile, precise, and efficient gene editing technology.
    In March 2025, we announced a preclinical program for the treatment of alpha-1 antitrypsin deficiency, our second program within our liver franchise, which, with our Wilson’s Disease program, we expect to advance into the clinic next year.
    Chronic granulomatous disease is our most advanced blood program, and we are advancing PM359 as our candidate in the treatment of this disease.
    We believe our Prime Editing programs are well-positioned to leverage the clinical, regulatory, and manufacturing advancements made to date across gene therapy, gene editing, and delivery modalities to accelerate progression to clinical trials and potential approval.
    Components of Our Results of Operations
    Revenues
    To date, we have not generated any revenue from product sales and do not expect to generate any revenue from the sale of products for the foreseeable future. Our revenues to date have been generated through research collaboration and license agreements. We recognize revenue over the expected performance period under each agreement. We expect that our revenue for the next several years will be derived primarily from our current collaboration agreements and any additional collaborations that we may enter into in the future. To date, we have not received any royalties under any of our existing collaboration agreements.
    Research and Development Expenses
    Research and development expenses consist primarily of costs incurred in connection with the development and research of our immediate target indications and our differentiation target indications. These expenses include:
    •personnel-related expenses, including salaries, bonuses, benefits and stock-based compensation for employees engaged in manufacturing, research and development functions;
    •expenses incurred in connection with continuing our current research programs and preclinical and clinical development of any product candidates we may identify, including under agreements with third parties, such as consultants and contractors;
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    •the cost of developing and validating our manufacturing process for use in our preclinical and clinical studies;
    •laboratory supplies and research materials;
    •facilities, depreciation and other expenses related to research and development activities, which include direct or allocated expenses for rent and maintenance of facilities, and utilities;
    •the cost allocated to acquire in-process research and development, with no alternative future use associated with asset acquisitions or transactions to license intellectual property, such as our Broad License Agreement; and
    •expenses incurred in connection with our Pledge to Broad Institute.
    We expense all research and development costs in the periods in which they are incurred. Most of our research and development expenses have been related to early stage development activities. In the future, external research and development costs for any individual product candidate will be tracked commencing upon product candidate nomination. We do not allocate employee costs, costs associated with our discovery efforts, laboratory supplies, and facilities expenses, including depreciation or other indirect costs, to specific product development programs because these costs are deployed across multiple programs and our platform and, as such, are not separately classified.
    Upfront and milestone payments made are accrued for and expensed when the achievement of the milestone is probable up to the point of regulatory approval. Milestone payments made upon regulatory approval will be capitalized and amortized over the remaining useful life of the related product.
    We expect our research and development expenses to continue to increase substantially for the foreseeable future with our planned research and development activities related to developing any future product candidates, including investments in manufacturing, as we advance any product candidates we may identify and begin to conduct clinical trials, and with our obligations under the BMS Collaboration Agreement.
    General and Administrative Expenses
    General and administrative expenses consist of salaries and personnel-related costs, including stock-based compensation, for our personnel in executive, legal, finance and accounting, human resources and other administrative functions. General and administrative expenses also include legal fees relating to patents and corporate matters; professional fees paid for accounting, auditing, consulting and tax service; insurance costs; office and information technology costs; and facilities, depreciation and other general and administrative expenses, which include direct or allocated expenses for rent and maintenance of facilities and utilities.
    We anticipate that our general and administrative expenses will increase in the future as we increase our headcount to support research and development activities; increased accounting, legal, insurance, and investor and public relations costs as we continue to operate as a public company; and additional intellectual property-related expenses as we file patent applications to protect innovations arising from our research and development activities.
    Other Income (Expense)
    Other income (expense), net primarily consists of interest and other income earned on our short-term investments and the change in the fair value of our short-term investment in Beam Therapeutics Inc. (“Beam”), a related party, in connection with the Beam Collaboration Agreement, which is discussed in greater detail in Note 9, License and Collaboration Agreements, to the audited consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2024.
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    Results of Operations
    Comparison of the Three Months Ended March 31, 2025 and 2024
    Operating Expenses
    Research and Development Expenses
    Three Months Ended
    March 31,
    (in thousands)20252024Change
    Research and development expenses:
    Personnel expenses$14,800 $15,007 $(207)
    Research costs11,036 11,619 (583)
    Facility related10,969 7,334 3,635 
    License, intellectual property fees, and other1,425 1,675 (250)
    Clinical expense1,173 547 626 
    Professional and consultant fees1,159 1,592 (433)
    Total research and development expenses$40,562 $37,774 $2,788 
    The $2.8 million increase in research and development expense for the three months ended March 31, 2025 as compared to the three months ended March 31, 2024 was primarily driven by a $3.6 million increase in facility-related expense primarily due to the expansion and build out of our laboratory space at 60 First Street and 500 Arsenal Street.
    General and Administrative Expenses
    Three Months Ended
    March 31,
    (in thousands)20252024Change
    General and administrative expenses:
    Personnel expenses$7,156 $5,884 $1,272 
    Professional and consultant fees3,272 3,110 162 
    Facility related and other2,856 2,164 692 
    Total general and administrative expenses$13,284 $11,158 $2,126 
    The $2.1 million increase in general and administrative expense for the three months ended March 31, 2025 as compared to the three months ended March 31, 2024 is primarily driven by a $1.3 million increase in personnel expenses.
    Other Income (Expense)
    Three Months Ended
    March 31,
    (in thousands)20252024Change
    Other income:
    Interest income$1,182 $676 $506 
    Accretion (amortization) of investments339 830 (491)
    Change in fair value of short-term investment — related party(1,056)1,166 (2,222)
    Other income, net37 42 (5)
    Total other income, net$502 $2,714 $(2,212)
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    Change in Fair Value of Related Party Short-Term Investment
    The change in fair value of related party short-term investment for each of the periods presented is a result of Beam’s stock price movement.
    Liquidity and Capital Resources
    Since our inception, we have incurred significant operating losses. We expect to incur significant expenses and operating losses for the foreseeable future as we commence the clinical development of our programs and continue our platform development and early-stage research activities. We have not yet commercialized any products and we do not expect to generate revenue from sales of products for several years, if at all. To date, we have funded our operations primarily with proceeds from sales of preferred stock and from our public offerings and through payments from our collaboration partners. As of March 31, 2025, we had cash, cash equivalents, and investments of $144.3 million, excluding our restricted cash, or $158.3 million, including restricted cash.
    Going Concern
    Since our inception, we have incurred substantial losses. As of March 31, 2025, we had an accumulated deficit of $739.1 million and we expect to generate operating losses and negative operating cash flows for the foreseeable future. As stated above, as of March 31, 2025, we maintained cash, cash equivalents, short-term investments, and related party short-term investments of $144.3 million.
    In accordance with Accounting Standards Codification, or ASC, 205-40, Going Concern, or ASC 205-40, we evaluated whether there are conditions and events, considered in the aggregate, that raise substantial doubt about our ability to continue as a going concern within one year after the date on which this Quarterly Report on Form 10-Q is filed. Based on the our cash, cash equivalents, short-term investments, and related party short-term investments as of March 31, 2025, our current and forecasted level of operations and forecasted cash flows we determined that substantial doubt exists about our ability to continue as a going concern for 12 months from the date these condensed consolidated financial statements are issued. Our ability to continue as a going concern is dependent upon our ability to obtain the necessary financing to meet our obligations and repay our liabilities arising from normal business operations when they come due. Management plans to provide for capital requirements through financing or other transactions, and selling shares under our “at the market offering” program. There can be no assurance that we will be able to raise additional capital to fund operations with terms acceptable to us, or at all. Because certain elements of our plans to mitigate the conditions that raised substantial doubt about our ability to continue as a going concern are outside of our control, including the ability to raise capital through an equity or other financing, those elements cannot be considered probable according to ASC 205-40, and therefore cannot be considered in the evaluation of mitigating factors.
    The condensed consolidated financial statements as of March 31, 2025 have been prepared under the assumption that we will continue as a going concern for the next 12 months and that contemplates the realization of assets and satisfaction of liabilities and commitments in the normal course of business. Our ability to continue as a going concern is dependent upon our uncertain ability to obtain additional capital, reduce expenditures and/or execute on its business plan. These condensed consolidated financial statements do not include any adjustments that might result from the outcome of this uncertainty.
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    Cash Flows
    The following table summarizes our sources and uses of cash for each of the periods presented:
    Three Months Ended
    March 31,
    (in thousands)20252024
    Net change in cash, cash equivalents and restricted cash:
    Net cash used in operating activities$(48,857)$(67,707)
    Net cash used in investing activities(47,742)(37,032)
    Net cash provided by financing activities6,000 157,327 
    Net change in cash, cash equivalents, and restricted cash$(90,599)$52,588 
    Operating Activities
    Net cash used in operating activities for the three months ended March 31, 2025 was driven primarily by the following uses of cash:
    •$51.9 million net loss;
    •$6.7 million change in accrued expenses and other current liabilities; and
    •$1.4 million change in deferred revenue — related party.
    These were offset by:
    •$10.7 million of non-cash amounts included in net loss, which primarily consisted of stock-based compensation expense, non-cash lease expense, depreciation expense, and change in fair value of short-term investment — related party; and
    •$1.9 million change in accounts payable.
    Net cash used in operating activities for the three months ended March 31, 2024 was driven primarily by the following uses of cash:
    •$45.8 million net loss;
    •$13.5 million change in accrued settlement payment — related party;
    •$5.9 million change in accounts payable;
    •$4.5 million change in accrued expenses and other current liabilities;
    •$3.5 million change in lease liabilities; and
    •$2.8 million change in prepaid and other current assets.
    These were offset by $8.2 million of non-cash amounts included in net loss, which primarily consisted of stock-based compensation expense, non-cash lease expense, and depreciation expense.
    Investing Activities
    Net cash used in investing activities for the three months ended March 31, 2025 was driven primarily by the following:
    •$45.3 million of purchases of marketable securities, net of maturities; and
    •$2.4 million of purchases of property and equipment.
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    Net cash used in investing activities for the three months ended March 31, 2024 was driven primarily by the following:
    •$34.7 million of purchases of marketable securities, net of maturities; and
    •$2.3 million of purchases of property and equipment.
    Financing Activities
    Net cash provided by financing activities for the three months ended March 31, 2025 was driven by $6.0 million of proceeds received under our agreement with Cystic Fibrosis Foundation.
    Net cash provided by financing activities for the three months ended March 31, 2024 was driven primarily by the following:
    •$132.1 million of proceeds from issuances of common stock in the our February 2024 public offering;
    •$18.8 million of proceeds from issuance of pre-funded warrants contemporaneous with our February 2024 public offering; and
    •$6.0 million of proceeds received under our agreement with Cystic Fibrosis Foundation.
    Funding Requirements
    To date, we have not generated any revenue from product sales. We do not expect to generate revenue from product sales unless and until we successfully complete preclinical and clinical development of, receive regulatory approval for, and commercialize a product candidate and we do not know when, or if at all, that will occur. We expect our expenses to increase in connection with our ongoing activities, particularly as we advance the preclinical activities and studies and initiate clinical trials. In addition, if we obtain regulatory approval for any product candidates, we expect to incur significant expenses related to product sales, marketing, and distribution to the extent that such sales, marketing and distribution are not the responsibility of potential collaborators. Further, we have incurred, and expect to continue to incur, costs associated with operating as a public company. The timing and amount of our operating expenditures will depend largely on the factors set out above. For more information, refer to the section titled “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2024, and the “Risk Factors” section of subsequent Quarterly Reports on Form 10-Q.
    We believe our existing cash, cash equivalents, and investments, will be sufficient to fund our operating expenses and capital expenditure requirements into the first half of 2026. We have based this estimate on assumptions that may prove to be wrong, and we could exhaust our available capital resources sooner than we expect. We expect that we will require additional funding to:
    •continue our current research development activities;
    •identify product candidates;
    •initiate preclinical testing and clinical trials for our future product candidates we identify;
    •develop, maintain, expand and protect our intellectual property portfolio;
    •further develop our Prime Editing platform; and
    •hire additional research, clinical and scientific personnel.
    If we receive regulatory approval for any of our product candidates, we expect to incur significant commercialization expenses related to product manufacturing, sales, marketing and distribution, depending on where we choose to commercialize ourselves.
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    Until such time, if ever, as we can generate substantial product revenue, we expect to finance our cash needs through a combination of private and public equity offerings, debt financings, additional collaborations, strategic alliances, and marketing, distribution or licensing arrangements with third parties. To the extent that we raise additional capital through the sale of equity or convertible debt securities, ownership interest may be materially diluted, and the terms of such securities could include liquidation or other preferences that adversely affect your rights as a common stockholder. Debt financing and preferred equity financing, if available, may involve agreements that include restrictive covenants that limit our ability to take specified actions, such as incurring additional debt, making capital expenditures or declaring dividends. If we raise funds through collaborations, strategic alliances or marketing, or distribution or licensing arrangements with third parties, we may have to relinquish valuable rights to our technologies, any future revenue streams, research programs or product candidates or grant licenses on terms that may not be favorable to us. If we are unable to raise additional funds through equity or debt financings or other arrangements when needed, we may be required to delay, reduce or eliminate 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.
    Contractual Obligations and Other Commitments
    We enter into contracts in the normal course of business with contract organizations and other vendors to assist in the performance of our research and development activities, and other services and products for operating purposes. These contracts generally provide for termination on notice, and therefore are cancellable contracts and not included in the table of contractual obligations and commitments.
    During the three months ended March 31, 2025, except for the minimum lease commitments disclosed in Note 6, Leases, to the unaudited condensed consolidated financial statements in this Quarterly Report on Form 10-Q, there were no significant changes to our contractual obligations and commitments described under Management’s Discussion and Analysis of Financial Condition and Results of Operations in our Annual Report on Form 10-K for the year ended December 31, 2024.
    Critical Accounting Policies and Significant Judgments and Estimates
    Our management’s discussion and analysis of our financial condition and results of operations is based on our condensed consolidated financial statements, which have been prepared in accordance with U.S. GAAP. The preparation of these condensed consolidated financial statements requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosures of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses incurred during the reporting periods. We base our estimates on historical experience, known trends and events, and various other factors that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities recorded revenues and expenses that are not readily apparent from other sources. We evaluate our estimates and assumptions on an ongoing basis. Actual results may differ from these estimates.
    During the three months ended March 31, 2025, there were no material changes to our critical accounting policies and significant judgements described under Management’s Discussion and Analysis of Critical Accounting Policies and Significant Judgments and Estimates which are included in our Annual Report on Form 10-K for the year ended December 31, 2024.
    Recently Issued and Adopted Accounting Pronouncements
    A description of recently issued accounting pronouncements that may potentially impact our financial position and results of operations is disclosed in Note 2, Summary of Significant Accounting Policies, to our audited financial statements for the year ended December 31, 2024, and notes thereto, included in our Annual Report on Form 10-K and in this Quarterly Report on Form 10-Q.
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    Emerging Growth Company Status
    The Jumpstart Our Business Startups Act of 2012 permits an “emerging growth company” such as us to take advantage of an extended transition period to comply with new or revised accounting standards applicable to public companies until those standards would otherwise apply to private companies. We have elected not to “opt out” of such extended transition period, which means that when a standard is issued or revised and it has different application dates for public or private companies, we will adopt the new or revised standard at the time private companies adopt the new or revised standard and will do so until such time that we either (i) irrevocably elect to “opt out” of such extended transition period or (ii) no longer qualify as an emerging growth company. As a result of this election, our condensed consolidated financial statements may not be comparable to other public companies that comply with new or revised accounting pronouncements as of public company effective dates. We may choose to early adopt any new or revised accounting standards whenever such early adoption is permitted for private companies.
    Item 3. Quantitative and Qualitative Disclosures About Market Risk
    Interest Rate Risk
    We are exposed to market risk related to changes in interest rates of our investment portfolio of cash equivalents and investments. As of March 31, 2025, we held cash, cash equivalents, investments, and restricted cash of $158.3 million, which consisted of cash, money market funds, equity securities, and debt securities. Our primary exposure to market risk is interest income sensitivity, which is affected by changes in the general level of U.S. interest rates. The fair value of our cash equivalents, consisted of our money market funds, and investments are subject to change as a result of potential changes in market interest rates. Due to the short-term maturities of our cash equivalents and investments and the low risk profile of our investments, an immediate 10 percent change in interest rates would not have a material effect on the fair market value of our cash equivalents or investments.
    Effects of Inflation
    Inflation generally affects us by increasing our cost of labor and research and development costs. Although we do not believe that inflation has had a material impact on our financial position or results of operations to date, we may experience some effect in the near future (especially if inflation rates continue to rise) due to an impact on the costs to conduct research and development, labor costs we incur to attract and retain qualified personnel, and other operational costs. Inflationary costs could adversely affect our business, financial condition and results of operations.
    Item 4. Controls and Procedures
    We have established disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)), designed to ensure that information required to be disclosed in the reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms and is accumulated and communicated to management, including the principal executive officer (our Chief Executive Officer) and principal financial officer (our Chief Financial Officer), to allow timely decisions regarding required disclosure. In addition, the design of disclosure controls and procedures must reflect the fact that there are resource constraints and that management is required to apply judgment in evaluating the benefits of possible controls and procedures relative to their costs.
    Internal Control over Financial Reporting
    Disclosure Controls and Procedures
    Our management, with the participation of our principal executive officer and principal financial officer, evaluated, as of the end of the period covered by this Quarterly Report on Form 10-Q, the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act). Management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives and management necessarily applies its judgment in evaluating
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    the cost-benefit relationship of possible controls and procedures. Our disclosure controls and procedures have been designed to provide reasonable assurance of achieving their objectives.
    Changes in Internal Control Over Financial Reporting
    There were no changes in our internal control over financial reporting that occurred during the three months ended March 31, 2025 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.
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    Part II - Other Information
    Item 1. Legal Proceedings
    From time to time, we may become involved in litigation or other legal proceedings. While the outcome of any such proceedings cannot be predicted with certainty, as of March 31, 2025, we were not a party to any litigation or legal proceedings that, in the opinion of our management, are probable to have a material adverse effect on our business.
    Item 1A. Risk Factors
    Investing in our common stock involves a high degree of risk. For a detailed discussion of the risks and uncertainties related to our business, please refer to the section titled “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2024. There have been no material changes from the risk factors set forth in our Annual Report on Form 10-K for the year ended December 31, 2024, except as set forth below.
    Because our existing cash, cash equivalents, and investments will not be sufficient to fund our operations, as currently planned, for more than one year beyond the filing date of this Quarterly Report on Form 10-Q, we have determined that there is substantial doubt regarding our ability to continue as a going concern.
    Based on our existing cash, cash equivalents, short-term investments, and related party short-term investments as of March 31, 2025, our current and forecasted level of operations and our forecasted cash flows, our ability to continue as a going concern is dependent upon our ability to obtain the necessary financing to meet our obligations and repay our liabilities arising from normal business operations when they come due. We plan to provide for our capital requirements through financing or other transactions, and selling shares of our common stock under our “at the market offering” program. There can be no assurance that we will be able to raise additional capital to fund operations with terms acceptable to us, or at all. Because our existing cash, cash equivalents, and investments will not be sufficient to fund our operations for more than one year from the date of issuance of the consolidated financial statements appearing in this Quarterly Report on Form 10-Q, we have determined that there is substantial doubt regarding our ability to continue as a going concern.
    The substantial doubt about our ability to continue as a going concern may adversely affect our stock price and our ability to raise capital. If we are unable to obtain additional capital, we may not be able to continue our operations on the scope or scale as currently conducted, and that could have a material adverse effect on our business, results of operations and financial condition.
    Disruptions at the FDA and other government agencies caused by reduction in staffing, funding shortages or global health concerns could hinder their ability to hire, retain or deploy key leadership and other personnel, or otherwise prevent new or modified products from being developed, approved, or commercialized in a timely manner or at all, which could negatively impact our business.
    Currently, federal agencies in the U.S. are operating under a continuing resolution that is set to expire on September 30, 2025. Without appropriation of additional funding to federal agencies, our business operations related to our product development activities for the U.S. market could be impacted. Inadequate funding for the FDA, the SEC and other government agencies, including from government shut downs, or other disruptions to these agencies’ operations, could hinder their ability to hire and retain key leadership and other personnel, prevent new products and services from being developed or commercialized in a timely manner or otherwise prevent those agencies from performing normal business functions on which the operation of our business may rely, which could negatively impact our business. The Trump administration has issued executive orders seeking to greatly reduce the size of the federal workforce, including through layoffs and severance packages offered to employees of federal agencies within the executive branch and independent agencies, including the FDA. Any such reduction in personnel may result in longer review times by the FDA and other agencies.
    The ability of the FDA to review and approve new products can be affected by a variety of factors, including government budget and funding levels, statutory, regulatory, and policy changes, the FDA’s ability to hire and retain key personnel and accept the payment of user fees, and other events that may otherwise affect the FDA’s ability to perform routine functions. Average review times at the agency have fluctuated in recent years as a result. In
    33


    addition, government funding of other government agencies that fund research and development activities is subject to the political process, which is inherently fluid and unpredictable. Disruptions and personnel turnover, as a result of leadership changes, staff reductions or otherwise, at the FDA and other agencies may also slow the time necessary for biologics or modifications to approved biologics to be reviewed and/or approved by necessary government agencies, which would adversely affect our business. Changes and cuts in FDA staffing also could result in delays in the FDA’s responsiveness or in its ability to review IND submissions or applications, issue regulations or guidance, or implement or enforce regulatory requirements in a timely fashion or at all.
    Over the last several years, the U.S. government has shut down several times and certain regulatory agencies, such as the FDA, have had to furlough critical employees and stop critical activities. If a prolonged government shutdown occurs, or if staffing changes prevent the FDA or other regulatory authorities from conducting their regular inspections, reviews, or other regulatory activities, including formal and informal interactions with product developers, it could significantly impact the ability of the FDA or other regulatory authorities to timely review and process our future regulatory submissions, which could have a material adverse effect on our business.
    Unfavorable macroeconomic conditions or market volatility resulting from geopolitical developments or national or global economic conditions, including those affecting the financial services industry, could adversely affect our business, financial condition or results of operations.
    Adverse macroeconomic conditions or market volatility resulting from national or global economic developments, political unrest, high inflation, rising interest rates, new or increase international tariffs and retaliatory tariffs, changes in international trade relationships and military conflicts, such as the ongoing conflict between Russia and Ukraine, the potential for significant changes in U.S. policies or regulatory environment, or other factors, could materially and adversely affect our business operations. Sanctions imposed by the U.S. and other countries in response to such conflicts may also continue to adversely impact the financial markets and the global economy, and any economic countermeasures by the affected countries or others could exacerbate market and economic instability. Tariffs levied by the U.S. and other countries also may adversely affect financial markets and the global economy. For example, on April 2, 2025, the U.S. imposed substantial tariffs on most countries throughout the world. The new U.S. administration has threatened to continue to broadly impose tariffs, which could lead to corresponding punitive actions by the countries with which the U.S. trades.
    Additionally, changes to policy implemented by the U.S. Congress, the Trump administration or any new administration have impacted and may in the future impact, among other things, the U.S. and global economy, international trade relations, unemployment, immigration, healthcare, taxation, the U.S. regulatory environment, inflation and other areas. There can be no assurance that further deterioration in credit and financial markets and confidence in economic conditions will not occur. For instance, actual events involving limited liquidity, defaults, non-performance or other adverse developments that affect financial institutions, transactional counterparties or other companies in the financial services industry or the financial services industry generally, or concerns or rumors about any events of these kinds or other similar risks, have in the past and may in the future lead to market-wide liquidity problems. Investor concerns regarding the U.S. or international financial systems could result in less favorable commercial financing terms, including higher interest rates or costs and tighter financial and operating covenants, or systemic limitations on access to credit and liquidity sources, thereby making it more difficult for us to acquire financing on acceptable terms or at all. In addition, any further deterioration in the macroeconomic economy or financial services industry could lead to losses or defaults by our suppliers, which in turn, could have a material adverse effect on our current and/or planned business operations and our current or projected results of operations and financial condition. For example, there has been proposed U.S. legislation that may restrict the ability of U.S. biopharmaceutical companies to purchase services or products from, or otherwise collaborate with, certain Chinese biotechnology companies of concern without losing the ability to contract with, or otherwise receive funding from, the U.S. government. We continue to assess the legislation as it develops to determine whether it could have an effect on our contractual relationships. Also, current inflationary trends in the global economy may impact salaries and wages, costs of goods and transportation expenses, among other things, and recent and potential future disruptions in access to bank deposits or lending commitments due to bank failures may create market and economic instability.
    34


    A severe or prolonged economic downturn or additional global financial crises could result in a variety of risks to our business, including weakened demand for any product candidates we develop or our ability to raise additional capital when needed on acceptable terms, if at all.
    Further, U.S. government appropriations have been affected by larger U.S. government budgetary issues and related legislation. In addition, in the past, U.S. debt ceiling and budget deficit concerns have increased the possibility of additional credit-rating downgrades and economic slowdowns, or a recession in the U.S. Although U.S. lawmakers passed legislation to raise the federal debt ceiling on multiple occasions, ratings agencies have lowered or threatened to lower the long-term sovereign credit rating on the U.S. The impact of this or any further downgrades to the U.S. government’s sovereign credit rating or its perceived creditworthiness could adversely affect the U.S. and global financial markets and economic conditions. As a result, government spending levels are difficult to predict beyond the near term due to numerous factors, including the external threat environment, future government priorities and the state of government finances. Significant changes in government spending or changes in U.S. government priorities, policies and requirements could have a material adverse effect on our results of operations, financial condition or liquidity.
    Any of the foregoing could harm our business and we cannot anticipate all of the ways in which the current economic climate and financial market conditions could adversely impact our business.
    Item 2. Unregistered Sales of Equity Securities and Use of Proceeds
    Set forth below is information regarding shares of equity securities sold, and options granted, by us during the three months ended March 31, 2025 that were not registered under the Securities Act.
    Recent Sales of Unregistered Equity Securities
    None.
    Issuer Purchases of Equity Securities
    None.
    Item 3. Defaults Upon Senior Securities
    None.
    Item 4. Mine Safety Disclosures
    Not Applicable.
    Item 5. Other Information
    Rule 10b5-1 Trading Arrangements
    From time to time, our officers (as defined in Rule 16a–1(f)) and directors may enter into Rule 10b5-1 or non-Rule 10b5-1 trading arrangements (as each such term is defined in Item 408 of Regulation S-K). During the three months ended March 31, 2025, none of the Company’s directors or officers adopted, modified or terminated a plan or other arrangement intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) or any non-Rule 10b5-1 trading arrangements (as defined in Item 408(c) of Regulation S-K).
    35


    Item 6. Exhibits
    (a)Exhibits.
    Exhibit numberExhibit table
    3.1
    Third Amended and Restated Certificate of Incorporation of Prime Medicine, Inc. (incorporated by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K, filed with the SEC on October 24, 2022).
    3.2
    Certificate of Amendment to Third Amended and Restated Certificate of Incorporation of Prime Medicine, Inc. (incorporated by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K, filed with the SEC on June 12, 2024).
    3.3
    Second Amended and Restated Bylaws of Prime Medicine, Inc. (incorporated by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K, filed with the SEC on May 21, 2024).
    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.
    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.
    32.1**
    Certification of Principal Executive Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
    32.2**
    Certification of Principal Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
    101.INS*Inline XBRL Instance Document
    101.SCH*Inline XBRL Taxonomy Extension Schema Document
    101.CAL*Inline XBRL Taxonomy Extension Calculation Linkbase Document
    101.DEF*Inline XBRL Taxonomy Extension Definition Linkbase Document
    101.LAB*Inline XBRL Taxonomy Extension Label Linkbase Document
    101.PRE*Inline XBRL Taxonomy Extension Presentation Linkbase Document
    104*Cover Page Interactive Data File (embedded within the Inline XBRL document)
    __________________
    *Filed herewith.
    **    The certifications furnished in Exhibit 32.1 and Exhibit 32.2 hereto are deemed to accompany this Quarterly Report on Form 10-Q and will not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended. Such certifications will not be deemed to be incorporated by reference into any filings under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except to the extent that the Registrant specifically incorporates it by reference.
    (b)Financial Statement Schedules.
    None.
    36


    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.
    Prime Medicine, Inc.
    Date: By:/s/ Keith Gottesdiener
    Date: May 08, 2025Keith Gottesdiener
    President and Chief Executive Officer
    (Principal Executive Officer)
    Date: May 08, 2025By:
    /s/ Allan Reine
    Allan Reine
    Chief Financial Officer
    (Principal Financial Officer)
    37
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