Editas Medicine, Inc. (EDIT) FY 2024 MD&A

Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

The following discussion and analysis of our financial condition and results of operations should be read together with our consolidated financial statements and related notes appearing elsewhere in this Annual Report on Form 10-K.

Some of the information contained in this discussion and analysis or set forth elsewhere in this Annual Report on Form 10-K contains forward-looking statements that involve substantial risks and uncertainties. The words “anticipate,” “believe,” “estimate,” “expect,” “intend,” “may,” “plan,” “predict,” “project,” “would” and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. There are a number of important risks and uncertainties that could cause our actual results to differ materially from those indicated by forward-looking statements. We may not actually achieve the plans, intentions or expectations disclosed in our forward-looking statements, and you should not place undue reliance on our forward-looking statements. Actual results or events could differ materially from the plans, intentions and expectations disclosed in the forward-looking statements we make. We have included important factors in the cautionary statements included in this Annual Report on Form 10-K, particularly in the section entitled “Risk Factors” in Part I, Item 1A that could cause actual results or events to differ materially from the forward-looking statements that we make. Our forward-looking statements do not reflect the potential impact of any future acquisitions, mergers, dispositions, joint ventures or investments that we may make.

You should read this Annual Report on Form 10-K and the documents that we have filed as exhibits to this Annual Report on Form 10-K 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 Annual Report on Form 10-K are made as of the date of this Annual Report on Form 10-K,and we do not assume any obligation to update any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by applicable law.

Overview

We are a pioneering gene editing company dedicated to developing potentially transformative genomic medicines to treat a broad range of serious diseases. We have developed a proprietary gene editing platform based on CRISPR technology and we continue to expand its capabilities. Our product development strategy is to target diseases where gene editing can be used to enable or enhance therapeutic outcomes for patients, while maximizing probability of technical, regulatory and commercial success. We are focused on the development of in vivo gene editing medicines utilizing functional upregulation, which aims to increase the expression and function of a normal gene copy and its normal protein function to treat diseases caused by genetic mutations that eliminate or disrupt normal function. We believe the ability to provide in vivo gene editing, in which the medicine is injected or infused into the patient to edit the cells inside their body, and functionally upregulates normal gene expression and normal protein function in the target tissues holds the potential to significantly expand the addressable therapeutic possibilities of CRISPR-based gene editing. To that end, our preclinical efforts are also focused on the creation of a “plug ‘n play” LNP platform that enables delivery of the gene editing cargo to multiple cells and tissues, including hematopoietic stem cells (“HSCs”), the liver and other cells and tissues.

We previously demonstrated proof of concept of our functional upregulation strategy in our clinical trials of renizgamglogene autogedtemcel (“reni-cel”), an experimental ex vivo gene-edited medicine to treat sickle cell disease (“SCD”) and transfusion-dependent beta thalassemia (“TDT”). Despite the robust and clinically meaningful improvements observed in these trials, we determined in December 2024 not to pursue commercialization for reni-cel in order to optimize our cost structure and accelerate our intent to achieve in vivo human proof of concept in approximately two years. However, leveraging our differentiated approach and the insights gained from these trials, we are initially focused on pursuing next generation in vivo gene editing medicines targeting HSCs. In October 2024, we shared our achievement of in vivo preclinical proof of concept of hematopoietic stem and progenitor cell editing and fetal hemoglobin induction in

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humanized mice engrafted with human HSCs and lacking their own hematopoietic cells using a novel and proprietary targeted lipid nanoparticle (“tLNP”) formulation for non-liver, or extrahepatic, tissue delivery. Building on this achievement, in January 2025, we announced in vivo preclinical proof of concept of editing HSCs in non-human primates, a key step in developing a treatment for SCD and TDT. We are on track to declare a development candidate in HSCs for the in vivo treatment of SCD and TDT in mid-2025.

Beyond hemoglobinopathies, our discovery and development efforts are focused on in vivo gene editing medicines in liver cells and other cells and tissues. In preclinical studies for an undisclosed liver target, we have achieved an editing level of approximately 65% in non-human primates, near the theoretical maximum liver editing level of 70%, with minimal non-target tissue editing using AsCas12a and a liver targeted lipid nanoparticle (“LNP”). This editing resulted in robust serum biomarker reduction from the baseline of approximately 80%. We further announced in vivo delivery to two additional cell types in humanized mice using our proprietary LNP targeting platform. We are on track to declare a development candidate for an in vivo gene editing medicine in liver cells for an undisclosed indication in mid-2025 and to establish and disclose an extrahepatic, non-HSC target cell type or tissue by the end of 2025. We expect to present further in vivo HSC data and present further in vivo data in one liver indication by the end of 2025.

We are pursuing the right combination of gene editing and targeted delivery tools through internal development and the in-licensing of complementary technologies to build our preclinical pipeline and accelerate the achievement of our goal of delivering lifesaving medicines to patients with previously untreatable diseases. Through in-licensing of complementary technologies, we can expand our existing gene editing platform and further drive the development of our in vivo pipeline. This was recently demonstrated with our entry in 2024 into a collaboration and license agreement to access LNPs targeting the liver, which we used in our achievement of in vivo editing of liver cells in non-human primates. We also actively seek opportunities to out-license and partner our robust intellectual property portfolio to drive the development of CRISPR-based medicines in therapeutic areas outside of our core focus and to provide non-dilutive capital. For example, in cellular therapy medicines, we are leveraging partnerships to progress engineered cell medicines to treat various cancers, including in our collaboration with Bristol Myers Squibb Company (“BMS”) through its wholly owned subsidiary, Juno Therapeutics, Inc. (“Juno Therapeutics”). This collaboration, which leverages our Cas9 and AsCas12a platform technologies, seeks to advance alpha-beta T-cell experimental medicines for the treatment of solid and liquid tumors, and has resulted in 14 total programs to date.

In addition, in December 2023, we and Vertex Pharmaceuticals Incorporated (“Vertex”) entered into a license agreement, under which Vertex obtained a non-exclusive license for our Cas9 gene editing technology for ex vivo gene editing medicines targeting the BCL11A gene in the fields of SCD and TDT, including Vertex’s CASGEVYTM (exagamglogene autotemcel). We received a $50.0 million upfront cash payment in the fourth quarter of 2023 and the 2024 annual license fee of $10.0 million in the first quarter of 2024. The license agreement further provides for the payment by Vertex of a potential additional $50.0 million contingent upfront payment and further future fixed and sales-based annual license fees, ranging from $10.0 million to $40.0 million annually, inclusive of certain sales-based annual license fee increases, through 2034. We are required to pay The Broad Institute, Inc. (“Broad”) and the President and Fellows of Harvard College (“Harvard”) a mid-double-digit percentage of amounts payable to us from Vertex under the license agreement as it relates to Cas9 technology licensed by us from Broad and Harvard. In October 2024, we entered into an agreement (the “DRI Agreement”) with a wholly owned subsidiary of DRI Healthcare Trust (“DRI”) providing for an upfront cash payment by DRI to us of $57.0 million in exchange for the acquisition by DRI of up to 100% of certain of the annual license fees owed to us under the Vertex license agreement, which fees range from $5.0 million to $40.0 million per year (inclusive of certain sales-based annual license fees that may become due), and a mid-double-digit percentage of the $50.0 million contingent upfront payment, in each case after subtracting amounts owed by us to Broad and Harvard. We have retained rights to our portions of certain other sales-based annual license fees and the contingent upfront payment that may become due under the license agreement with Vertex, and the amounts that correspond to our licensor obligations.

In August 2023, we entered into a license agreement with Vor Biopharma, Inc. (“Vor Bio”), providing Vor Bio a non-exclusive license for the development of ex vivo Cas 9 gene edited HSC therapies for the treatment and/or prevention of hematological malignancies. Under this agreement, we received an upfront payment and will be eligible for future development, regulatory and commercial milestone payments, as well as royalties on medicines utilizing the related intellectual property.

Since our inception in September 2013, our operations have focused on organizing and staffing our company, business planning, raising capital, establishing our intellectual property portfolio, assembling our core capabilities in gene editing, seeking to identify potential product candidates, and undertaking preclinical studies and clinical trials. All of our ongoing research programs are still in the preclinical or research stage of development and the risk of failure of all of our

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research programs is high. We have not generated any revenue from product sales. We have primarily financed our operations through various equity financings, payments received under our research collaboration with BMS through its wholly owned subsidiary Juno Therapeutics, our former strategic alliance with Allergan Pharmaceuticals International Limited (together with its affiliates, “Allergan”), which was terminated in August 2020, payments received under the DRI Agreement in connection with our license agreement with Vertex, and payments under the Vertex license agreement.

Since inception, we have incurred significant operating losses. Our net losses were $237.1 million, $153.2 million, and $220.4 million for the years ended December 31, 2024, 2023 and 2022 respectively. As of December 31, 2024, we had an accumulated deficit of $1.5 billion. We expect to continue to incur significant expenses and operating losses for the foreseeable future. Our net losses may fluctuate significantly from quarter to quarter and from year to year. We anticipate that our expenses will increase substantially as we continue our current research programs and our preclinical development activities; seek to identify additional research programs and additional product candidates; initiate preclinical testing and clinical trials for other product candidates we identify and develop; maintain, expand, and protect our intellectual property portfolio, including reimbursing our licensors for such expenses related to the intellectual property that we in-license from such licensors; further develop our genome editing platform; hire additional clinical, quality control, and scientific personnel; and incur additional costs associated with operating as a public company. We do not expect to be profitable for the year ending December 31, 2025 or the foreseeable future.

Financial Operations Overview

Revenue

To date, we have not generated any revenue from product sales and we do not expect to generate any revenue from product sales for the foreseeable future.

In connection with our collaboration with BMS, we have received an aggregate of $146.5 million in payments, which have primarily consisted of the initial upfront and amendment payments, development milestone payments and research funding support. We no longer receive research funding support. During the year ended December 31, 2024, we recognized $18.1 million of revenue related to our collaboration with BMS of which $6.5 million was previously deferred revenue. As of December 31, 2024, we had $50.2 million of deferred revenue related to BMS, of which $50.2 million is classified as long-term on our consolidated balance sheet. Under this collaboration, we will recognize revenue upon delivery of option packages to BMS or when milestones are achieved. As such, we expect that our revenue will fluctuate from quarter-to-quarter and year-to-year as a result of the timing of when these events occur.

Pursuant to the license agreement with Vertex, we received a $50.0 million upfront cash payment in the fourth quarter of 2023 upon execution of the agreement and the 2024 annual license fee of $10.0 million in the first quarter of 2024. The license agreement further provides for the payment by Vertex of a potential additional $50.0 million contingent upfront payment and further future fixed and sales-based annual license fees, ranging from $10.0 million to $40.0 million annually, inclusive of certain sales-based annual license fee increases, through 2034. For the year ended, December 31, 2024, we have recorded $10.0 million of revenue related to the agreement.

For additional information about our revenue recognition policy related to the Vertex license agreement and BMS collaboration, see Part II, Item 7 “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Critical Accounting Policies and Estimates—Revenue Recognition” included in this Annual Report on Form 10-K.

For the foreseeable future we expect substantially all of our revenue will be generated from our license agreements with Vertex and Vor Bio, collaboration with BMS, and any other collaborations or license agreements we may enter into.

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Expenses

Research and Development Expenses

Research and development expenses consist primarily of costs incurred for our research, preclinical development, process and scale-up development, manufacture and clinical development of our product candidates, and the performance of development activities under our collaboration agreements. These costs are expensed as incurred and include:

•employee-related expenses including salaries, benefits, and stock-based compensation expense;

•costs incurred under clinical trial agreements with investigative sites for our former reni-cel program;

•costs associated with conducting our preclinical, process and scale-up development, manufacturing, quality, clinical and regulatory activities, including fees paid to third-party professional consultants, service providers and suppliers;

•costs of purchasing lab supplies and non-capital equipment used in our preclinical activities and in manufacturing preclinical and clinical study materials;

•costs incurred for the research and development activities under our collaboration agreements;

•facility costs including rent, depreciation, and maintenance expenses; and

•fees for acquiring and maintaining licenses under our third-party licensing agreements, including any sublicensing or success payments made to our licensors.

At this time, we cannot reasonably estimate or know the nature, timing, and estimated costs of the efforts that will be necessary to complete the development of any product candidates we may identify and develop. This is due to the numerous risks and uncertainties associated with developing such product candidates, including the uncertainty of:

•successful completion of preclinical studies, IND-enabling studies and natural history studies;

•successful enrollment in, and completion of, clinical trials;

•receipt of marketing approvals from applicable regulatory authorities;

•establishing commercial manufacturing capabilities or making arrangements with third-party manufacturers;

•obtaining and maintaining patent and trade secret protection and non-patent exclusivity;

•launching commercial sales of a product, if and when approved, whether alone or in collaboration with others;

•acceptance of a product, if and when approved, by patients, the medical community, and third-party payors;

•effectively competing with other therapies and treatment options;

•a continued acceptable safety profile following approval;

•enforcing and defending intellectual property and proprietary rights and claims; and

•achieving desirable medicinal properties for the intended indications.

A change in the outcome of any of these variables with respect to the development of any product candidates we develop would significantly change the costs, timing, and viability associated with the development of that product candidate.

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Research and development activities are central to our business model. We expect research and development costs to increase significantly for the foreseeable future as our development programs progress, including as we continue to support preclinical studies and prepare for the clinical development of our research programs.

General and Administrative Expenses

General and administrative expenses consist primarily of salaries and other related costs, including stock-based compensation for personnel in executive, finance, investor relations, business development, legal, corporate affairs, information technology, facilities and human resource functions. Other significant costs include corporate facility costs not otherwise included in research and development expenses, legal fees related to intellectual property and corporate matters, and fees for accounting and consulting services.

We anticipate that our general and administrative expenses will decrease or remain flat in the near future to support continued research and development activities. We anticipate that expenses associated with operating as a public company, including costs for audit, legal, regulatory, and tax-related services, director and officer insurance premiums, and investor relation costs will remain flat or decrease in the near future. With respect to reimbursement of third-party intellectual property-related expenses specifically, given the ongoing nature of the opposition and interference proceedings involving the patents licensed to us under our license agreement with Broad and Harvard, we anticipate general and administrative expenses associated with reimbursement of third-party intellectual property-related expense will continue to fluctuate as the interference proceedings continue.

Restructuring Charges

In December 2024, our board of directors approved the discontinuation of the clinical development of our ex vivo reni-cel program. As part of the discontinuation, our board approved a reduction in our employee workforce by approximately 180 positions, or by approximately 65%. Restructuring charges consist primarily of expenses in connection with the wind-down of various activities related to clinical development of reni-cel, including contract termination costs, impairment charges and non-cash charges, and expenses related to the employee workforce reduction, primarily consisting of severance payments and employee benefit costs. We may also incur additional costs not currently contemplated due to events that may occur as a result of or that are associated with the discontinuation and headcount reduction. We estimate that we will incur approximately $45.0 million to $55.0 million in cash costs to implement the discontinuation and workforce reduction. We expect restructuring charges to be substantially incurred through the end of June 2025, when the related activities are expected to be substantially complete.

Other Income (Expense), Net

For the years ended December 31, 2024, and 2023, other income (expense), net consisted primarily of changes in interest income and accretion of discounts associated with other marketable securities.

Critical Accounting Policies and Estimates

Our management’s discussion and analysis of our financial condition and results of operations is based on our consolidated financial statements, which have been prepared in accordance with United States generally accepted accounting principles. The preparation of our consolidated financial statements requires us to make judgments and estimates that affect the reported amounts of assets, liabilities, revenues, and expenses, and the disclosure of contingent assets and liabilities in our consolidated financial statements. We base our estimates on historical experience, known trends and events, and various other factors that we believe to be reasonable under the circumstances. Actual results may differ from these estimates under different assumptions or conditions. On an ongoing basis, we evaluate our judgments and estimates in light of changes in circumstances, facts, and experience. The effects of material revisions in estimates, if any, will be reflected in the consolidated financial statements prospectively from the date of change in estimates.

While our significant accounting policies are described in more detail in the notes to our consolidated financial statements appearing elsewhere in this Annual Report on Form 10-K, we believe the following accounting policies used in the preparation of our consolidated financial statements requires the most significant judgments and estimates.

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Revenue Recognition

We recognize revenue in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”), Topic 606, Revenue Recognition (“ASC 606”). Accordingly, we recognize revenue following the five step model prescribed under Accounting Standards Updates No. 2014-09, Revenue from Contracts with Customers: (i) identify contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenues when (or as) we satisfy the performance obligation. We only apply the five-step model to contracts when it is probable that we will collect the consideration we are entitled to in exchange for the goods or services we transfer to the customer. At contract inception, once the contract is determined to be within the scope of ASC 606, we assess the goods or services promised within each contract and determine those that are performance obligations, and whether each promised good or service is distinct. We then recognize as revenue the amount of the transaction price that is allocated to the respective performance obligation when (or as) the performance obligation is satisfied. As part of the accounting for these arrangements, we must develop assumptions that require judgment to determine the standalone selling price for each performance obligation identified in the contract and use judgement in the determination of the transaction price and the application of the constraint. The determination of standalone selling price has not had a significant impact on the accounting for our revenue arrangements given the nature of the performance obligations. We have also not been required to apply significant judgement in determining the transaction price given the nature of the variable consideration and the application of the constraint.

Accrued Research and Development Expenses

As part of the process of preparing our financial statements, we are required to estimate our accrued expenses. This process involves reviewing open contracts and purchase orders, communicating with our personnel to identify services that have been performed on our behalf and estimating the level of service performed and the associated cost incurred for the service when we have not yet been invoiced or otherwise notified of the actual cost. The majority of our service providers invoice us monthly in arrears for services performed or when contractual milestones are met. We make estimates of our accrued expenses as of each balance sheet date in our financial statements based on facts and circumstances known to us at that time. Examples of estimated accrued research and development expenses include fees paid to clinical research organizations, to investigative sites in connection with clinical trials, to sponsored research organizations, to service providers in connection with preclinical development activities and to service providers related to product manufacturing, development and distribution of clinical supplies.

We base our accrued expenses related to clinical trials on our estimates of the services performed and efforts expended pursuant to our contractual arrangements, including those with clinical research organizations. The financial terms of these agreements are sometimes subject to negotiation, vary from contract to contract and may result in uneven payment flows. There may be instances in which payments made to our service providers will exceed the level of services performed and result in a prepayment of the clinical expense. Payments under some of these contracts depend on factors such as the successful enrollment of patients and the completion of clinical milestones. In accruing service fees, we estimate the time period over which services will be performed and the level of effort to be expended in each period. If the actual timing of the performance of services or the level of effort varies from our estimate, we adjust the accrual or prepaid accordingly.

Although we do not expect our estimates to be materially different from expenses actually incurred, if our estimates of the status and timing of services performed differs from the actual status and timing of services performed, we may report amounts that are too high or too low in any particular period. To date, there have been no material differences from our estimates to the amounts actually incurred.

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Results of Operations

Comparison of Years Ended December 31, 2024 and 2023

The following table summarizes our results of operations for the years ended December 31, 2024 and 2023, together with the changes in those items in dollars (in thousands) and the respective percentages of change:

For our results of operations, we have included the respective percentage of changes, unless greater than 100% or less than (100)%, in which case we have denoted such changes as not meaningful (n/m).

Collaboration and Other Research and Development Revenues

Collaboration and other research and development revenues decreased by $45.8 million, to $32.3 million for the year ended December 31, 2024, from $78.1 million for the year ended December 31, 2023. The decrease was primarily attributable to revenue recognized in 2023 under our license agreement with Vertex, which was executed in December 2023.

Research and Development Expenses

Research and development expenses increased by $21.5 million, to $199.2 million for the year ended December 31, 2024 from $177.7 million for the year ended December 31, 2023. The following table summarizes our research and development expenses for the years ended December 31, 2024 and December 31, 2023, together with the changes in those items in dollars (in thousands) and the respective percentages of change:

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The increase in research and development expenses for the year ended December 31, 2024 compared to the year ended December 31, 2023 was primarily attributable to:

•approximately $25.1 million in increased external research and development expenses primarily related to clinical and manufacturing costs related to the progression of our former reni-cel program as well as costs attributable to in vivo research and discovery;

•approximately $6.9 million in increased employee related expenses related to increased headcount;

•approximately $5.0 million in increased facility expenses primarily related to increased rent expense incurred in connection with a lease commencement for manufacturing space in the second quarter of 2024; and

•approximately $1.9 million in increased other expenses attributable to consulting and external fees to support clinical and quality initiatives.

These increases were partially offset by the following decreases in research and development expenses:

•approximately $16.1 million in decreased sublicense and license fees related to reduced licensing activity in 2024 compared to 2023; and

•approximately $1.2 million in decreased stock-based compensation expense due primarily to a reduction in the market price of our common stock, resulting in a lower valuation of equity awards granted.

General and Administrative Expenses

General and administrative expenses increased by approximately $2.3 million, to $72.0 million for the year ended December 31, 2024 from $69.7 million for the year ended December 31, 2023. The following table summarizes our general and administrative expenses for the years ended December 31, 2024 and December 31, 2023, together with the changes in those items in dollars (in thousands) and the respective percentages of change:

The increase in general and administrative expenses for the year ended December 31, 2024 compared to the year ended December 31, 2023 was primarily attributable to:

•approximately $3.8 million in increased employee related expenses related to increased headcount;

•approximately $2.8 million in increased stock-based compensation expense due primarily to the vesting of certain restricted stock units upon the achievement of performance-based milestones in 2024, along with an increased headcount;

•approximately $0.7 million in increased intellectual property and patent related fees for legal activity;

•approximately $0.3 million in increased facility and other expenses.

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These increases were partially offset by approximately $5.3 million in decreased professional services expenses primarily related to one-time expenses incurred in 2023 to support strategic initiatives and business development activities.

Restructuring Charges

Restructuring charges were $12.2 million for the year ended December 31, 2024, with no equivalent charges for the year ended December 31, 2023. The following table summarizes our restructuring charges for the years ended December 31, 2024 and December 31, 2023, together with the changes in those items in dollars (in thousands) and the respective percentages of change:

During the year ended December 31, 2024, we recorded $10.5 million and $1.8 million related to employee termination benefits and program-related contract termination costs, respectively, due to the discontinuation of the clinical development of our reni-cel program that we initiated in December 2024 and the related workforce reduction.

Total Other Income, Net

For the years ended December 31, 2024, and 2023, total other income, net was $14.1 million and $16.0 million, respectively, which was primarily attributable to interest income and accretion of discounts associated with marketable securities. The decrease was attributable to reduction of investment balances offset by increased market rates.

Comparison of Years Ended December 31, 2023 and 2022

For a discussion of our results of operations for the year ended December 31, 2023 as compared to the year ended December 31, 2022, see Part II, Item 7, “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, 2023, which was filed with the U.S. Securities and Exchange Commission (the “SEC”) on February 28, 2024.

Liquidity and Capital Resources

Sources of Liquidity

As of December 31, 2024, we have raised an aggregate of $1.0 billion in net proceeds through the sale of shares of our common stock in public offerings and at-the-market offerings. We also have funded our business from our research collaboration with BMS through its wholly owned subsidiary Juno Therapeutics, our former strategic alliance with Allergan (which was terminated in August 2020), payments received under the DRI Agreement in connection with our license agreement with Vertex, and payments under the Vertex license agreement. As of December 31, 2024, we had cash, cash equivalents and marketable securities of $269.9 million.

In May 2021, we entered into a common stock sales agreement with TD Securities (USA) LLC (as successor to Cowen and Company, LLC) (“TD Cowen”) under which we from time to time can issue and sell shares of our common stock through TD Cowen in at-the-market offerings for aggregate gross sale proceeds of up to $300.0 million (the “Prior ATM Facility”). We amended the common stock sales agreement with TD Cowen in February 2024 in connection with filing a new registration statement. In March 2025, we further amended our common stock sales agreement with TD Cowen in connection with amending our existing shelf registration statement following the loss of our status as a “well-known seasoned issuer” (as defined under Rule 450 of the Securities Act of 1933, as amended), reducing the amount of shares of common stock we may issue and sell through TD Cowen to aggregate gross sale proceeds of up to $150.0 million (the “ATM Facility”). As of December 31, 2024, we had not sold any shares of our common stock under the Prior ATM Facility or the ATM Facility.

In addition to our existing cash, cash equivalents and marketable securities, we are eligible to earn milestone and other payments under our collaboration agreement with BMS and our other collaboration and license agreements. Our

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ability to earn applicable milestone and other payments and the timing of earning these amounts are dependent upon the timing and outcome of development, regulatory and commercial activities and, as such, are uncertain at this time. As of December 31, 2024, our right to contingent payments under our collaboration agreements with BMS and Vor Bio, as well as the retained portions of the contingent upfront payment and other amounts under our license agreement with Vertex, are our only significant committed potential external source of funds.

Cash Flows

The following table provides information regarding our cash flows for the years ended December 31, 2024 and 2023, respectively (in thousands):

Net Cash Used in Operating Activities

The use of cash in all periods resulted primarily from our net losses adjusted for non-cash charges and changes in components of working capital.

Net cash used in operating activities was approximately $210.3 million for the year ended December 31, 2024, which primarily consisted of operating expenses that related to increasing our research efforts, the progression of clinical and manufacturing activities in support of our former reni-cel program and supporting business operations.

Net cash used in operating activities was approximately $132.2 million for the year ended December 31, 2023, which primarily consisted of operating expenses related to the focused progression of clinical and manufacturing activities in support of our former reni-cel program, sublicense and license fees, and supporting business operations.

Net Cash Provided by (Used in) Investing Activities

Net cash provided by investing activities was approximately $162.1 million for the year ended December 31, 2024, primarily related to maturities of marketable securities of $257.2 million. This was offset by $86.2 million of purchases of marketable securities and purchases of property and equipment of $8.8 million.

Net cash used in investing activities was approximately $3.7 million for the year ended December 31, 2023, primarily related to the purchase of property and equipment of $4.7 million. The remaining offset related to maturities of marketable securities of $259.5 million and purchases of marketable securities of $258.5 million.

Net Cash Provided by Financing Activities

Net cash provided by financing activities was approximately $56.0 million for the year ended December 31, 2024 primarily related to net proceeds received from the sale of future revenue of $55.2 million, proceeds received from issuance of common stock under our employee stock purchase plan of $0.6 million and proceeds from the exercise of stock options of $0.2 million.

Net cash provided by financing activities was approximately $118.0 million for the year ended December 31, 2023, primarily related to proceeds received from the public offering of common stock, net of issuance costs, of $117.1 million in June 2023 and proceeds received from issuance of common stock under our employee stock purchase plan of $0.9 million.

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For a discussion of our cash flows for the year ended December 31, 2022, see Part II, Item 7, “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, 2023, which was filed with the SEC on February 28, 2024.

Funding Requirements

We expect our expenses to decrease over the next few years due to the discontinuation of the reni-cel program, but we will continue to incur significant expenses as we continue to advance our research programs and our preclinical development activities; seek to identify product candidates and additional research programs; initiate preclinical testing and clinical trials for other product candidates we identify and develop; maintain, expand, and project our intellectual property portfolio, including reimbursing our licensors for expenses related to the intellectual property that we in-license from such licensors; and incur costs associated with operating as a public company. In addition, if we obtain marketing approval for any product candidate that we identify and develop, we expect to incur significant commercialization expenses related to product sales, marketing, manufacturing, and distribution to the extent that such sales, marketing, and distribution are not the responsibility of a collaborator. We do not expect to generate significant recurring revenue unless and until we obtain regulatory approval for and commercialize a product candidate. Accordingly, we will need to obtain substantial additional funding in connection with our continuing operations. If we are unable to raise capital when needed or on attractive terms, we would be forced to delay, reduce, or eliminate our research and development programs or future commercialization efforts.

We expect that our existing cash, cash equivalents and marketable securities on December 31, 2024, together with the retained portions of the payments payable under our license agreement with Vertex, will fund our operating expenses and capital expenditure requirements into the second quarter of 2027. Our forecast of the period of time through which our existing cash and cash equivalents and investments will be adequate to support our operations is a forward-looking statement and involves significant risks and uncertainties. We have based this forecast on assumptions that may prove to be wrong, and actual results could vary materially from our expectations, which may adversely affect our capital resources and liquidity. We could utilize our available capital resources sooner than we currently expect. The amount and timing of future funding requirements, both near- and long-term, will depend on many factors, including, but not limited to:

•the restructuring costs associated with the discontinuation of reni-cel;

•the scope, progress, results, and costs of clinical trials, drug discovery, preclinical development, laboratory testing, and clinical or natural history study trials for other product candidates we develop;

•the costs of preparing, filing, and prosecuting patent applications, maintaining and enforcing our intellectual property and proprietary rights, and defending intellectual property-related claims;

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

•the costs of establishing and maintaining a supply chain for the development and manufacture of our product candidates;

•the costs of future activities, including product sales, medical affairs, marketing, manufacturing, and distribution, for any product candidates for which we receive regulatory approval;

•the success of our collaboration with BMS, including whether BMS exercises any of its options to extend the research program term and/or to additional research programs under our collaboration;

•our ability to establish and maintain additional collaborations on favorable terms, if at all;

•the extent to which we acquire or in-license other medicines and technologies;

•the costs of reimbursing our licensors for the prosecution and maintenance of the patent rights in-licensed by us; and

•our ability to establish and maintain healthcare coverage and adequate reimbursement for any product candidates for which we receive regulatory approval.

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Identifying potential product candidates and conducting preclinical studies and clinical trials is a time-consuming, expensive, and uncertain process that takes many years to complete, and we may never generate the necessary data or results required to obtain marketing approval and achieve product sales. In addition, even if we successfully identify and develop product candidates and those are approved, we will require significant additional amounts in order to launch and commercialize our product candidates and may not achieve commercial success. Our commercial revenues, if any, will be derived from sales of genomic medicines that we do not expect to be commercially available for years, if at all. Accordingly, we will need to continue to rely on additional financing to achieve our business objectives. Adequate additional financing may not be available to us on acceptable terms, or at all.

Until such time, if ever, as we can generate substantial product revenues, we expect to finance our cash needs through a combination of equity offerings, debt financings, collaborations, strategic alliances, licensing arrangements and future royalty sales. To the extent that we raise additional capital through the sale of equity or convertible debt securities, our stockholders’ ownership interests will be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect the rights of our stockholders. Debt financing, if available, would result in increased fixed payment obligations and may involve agreements that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures, or declaring dividends.

If we raise funds through additional collaborations, strategic alliances, licensing arrangements, or future royalty sales with third parties, we may have to relinquish valuable rights to our technologies, future revenue streams, research programs, or product candidates or to grant licenses on terms that may not be favorable to us. If we are unable to raise additional funds through equity or debt financings when needed, we may be required to delay, limit, reduce, or terminate our product development or future commercialization efforts or grant rights to develop and market product candidates that we would otherwise prefer to develop and market ourselves.

Contractual Obligations

As of December 31, 2024, we had non-cancelable operating leases with total future minimum lease payments of $39.9 million, of which $17.1 million will be payable in 2025. These minimum lease payments exclude our share of the facility operating expenses, real-estate taxes and other costs that are reimbursable to the landlord under the leases.

In 2023, we entered into a license and service agreement pursuant to which we leased manufacturing space for our continued research and development activities. The lease commenced April 1, 2024. In September 2024, we modified the lease, and as a result of the modification the lease payments decreased and the notification period for the termination of the license and service agreement increased from 12 months’ prior written notice to 18 months’ prior written notice. In January 2025, we gave our termination notice on the license and service agreement. The license and service agreement will terminate in July 2026. From January 2025 through July 2026, we will incur minimum lease payments of up to $11.1 million.

In October 2024, we entered into a purchase and sale agreement (the “Purchase and Sale Agreement”) with DRI Healthcare Acquisitions LP (the “DRI”) under which we sold, transferred, assigned, and conveyed to DRI certain future license fees and other payments (the “Purchased Receivables”) owed to us by Vertex Pharmaceuticals, Inc. (“Vertex”) under the terms of a license agreement (the “License Agreement”) in exchange for an upfront cash payment by DRI to us of $57.0 million. Under the Purchase and Sale Agreement, DRI is purchasing up to 100% of certain future fixed and sales-based annual license fees owed to us under the License Agreement, which fees range from $5.0 million to $40.0 million per year (inclusive of certain sales-based annual license fee increases), and a mid-double-digit percentage of the $50.0 million contingent upfront payment that we may receive under the License Agreement, in each case after subtracting amounts owing by us to our licensors, The Broad Institute, Inc. and the President and Fellows of Harvard College. We have retained rights to our portions of certain other sales-based annual license fees and the contingent upfront payment that may become due under the License Agreement, and the amounts that correspond to our licensor obligations.

Our agreements with certain institutions to license intellectual property include potential milestone and success fees, sublicense fees, royalty fees, licensing maintenance fees, and reimbursement of patent maintenance costs that we may be required to pay. Our agreements to license intellectual property include potential milestone payments that are dependent upon the development of products using the intellectual property licensed under the agreements and contingent upon the achievement of development or regulatory approval milestones, as well as commercial milestones. These potential obligations are contingent upon the occurrence of future events and the timing and likelihood of such potential obligations are not known with certainty. For further information regarding these agreements, please see Part I, Item 1 “Business—Our Collaborations and Licensing Strategy” of this Annual Report on Form 10-K.

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We also enter into contracts in the normal course of business with contract research organizations, contract manufacturing 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 at any time upon prior notice.