VRDN US Equity☆

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis should be read together with our consolidated financial statements and the related notes thereto included elsewhere in this Annual Report. This discussion and other parts of this report contain forward-looking statements reflecting our current expectations that involve risks and uncertainties, such as our plans, objectives, expectations, intentions, and beliefs. See “Forward-Looking Statements” for a discussion of the uncertainties, risks, and assumptions associated with these statements. Actual results and the timing of events could 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 identified below and those discussed in the section entitled “Risk Factors” included elsewhere in this Annual Report.

This section discusses 2024 and 2023 items and year-to-year comparisons between the years ended December 31, 2024 and 2023. Discussions of the year ended December 31, 2022 and year-to-year comparisons between the years ended December 31, 2023 and 2022 have been excluded from this Form 10-K and can be found in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Part II, Item 7 of our Annual Report on Form 10-K for the fiscal year ended December 31, 2023, filed with the SEC on February 27, 2024.

Overview

We are a biopharmaceutical company focused on discovering, developing and commercializing potential best-in-class medicines for serious and rare diseases. We target disease areas where marketed therapies often leave room for improvements in efficacy, safety, and/or dosing convenience. We believe that first-generation medicines rarely represent optimal solutions, especially in rare disease areas, and that there is potential to develop differentiated, best-in-class medicines that could lead to improved patient outcomes, reduced side effects, improved quality of life, expanded market access, and augmented market competition. Our business model is designed to identify and evaluate product opportunities in disease areas where trial data

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establishes proof-of-concept for a drug target in the clinic, but the competitive evolution of the product life cycle management and number of entrants appears incomplete. We intend to prioritize indications where a fast-follower and a potentially differentiated drug candidate, or overall product profile, could create significant medical benefit for patients. We are engineering product candidates to address unmet medical needs for patients and further advance drug innovation.

Our goal is to identify and evaluate product concepts leveraging clinically validated molecular targets using established therapeutic modalities. We prioritize product concepts that are aligned with clinical and commercial hypotheses, which we expect will provide an attractive balance of risk and opportunity, thereby representing a compelling allocation of our resources. We focus on advancing therapeutic proteins that we either in-license or discover internally, incorporating proprietary therapeutic protein and antibody discovery and optimization platforms to advance clinical candidates with unique characteristics. We have built relevant expertise in protein and antibody discovery and engineering, biologics manufacturing, nonclinical and clinical development, and commercialization for thyroid eye disease (“TED”), development of anti-neonatal Fc receptor (“FcRn”) therapies, and nonclinical and clinical development for indications in rare and autoimmune diseases.

Our approach to rapidly discovering and developing novel therapeutics relies on our scientific expertise in evaluating pre-existing clinical proof-of-concept data for the drug targets we are pursuing, and opportunities to improve upon existing investigational and/or approved therapies. This approach informs how we design, select, and develop our product candidates, including in critical areas such as pharmacokinetics, pharmacodynamics, clinical trial design, trial endpoints, and the selection and recruitment of patients. We believe this strategy reduces the risks associated with discovering and developing novel therapeutics.

Development of Therapies to Treat Thyroid Eye Disease (TED)

We are developing two product candidates, veligrotug (formerly known as VRDN-001) for intravenous and VRDN-003 for subcutaneous administration, to treat patients who suffer from TED. Our most advanced program, veligrotug, is a differentiated humanized monoclonal antibody targeting IGF-1R intravenously administered for the treatment of TED. In previously presented in vitro nonclinical data, we showed that veligrotug is a potentially differentiated full antagonist of IGF-1R, compared to teprotumumab’s incomplete antagonism of IGF-1R. VRDN-003 has the same binding domain as veligrotug, and was engineered to have a longer half-life. VRDN-003 is designed to be a low-volume, infrequently-dosed subcutaneous IGF-1R for TED, which we plan to launch commercially with an auto-injector to enable at-home patient self-administration. We believe VRDN-003 has the potential to be the best-in-class subcutaneous anti-IGF-1R product candidate by preserving the efficacy of anti-IGF-1Rs in TED, improving safety and maximizing convenience for patients.

We conducted phase 1/2 clinical trials of veligrotug in patients with active or chronic TED. In the active TED portion of the phase 1/2 clinical trials, data reported from all three dose cohorts of veligrotug (n=21) showed significant and rapid improvement in both the signs and symptoms of TED after two infusions of veligrotug compared to placebo. Across all veligrotug treated patients in the active TED trial, 71% were proptosis responders, 67% were overall responders, 62% achieved a clinical activity score (“CAS”) of 0 or 1, and 54% had complete resolution of their diplopia. In the chronic TED portion of the phase 1/2 clinical trials, data reported from both dose cohorts of veligrotug (n=12) showed significant and rapid improvement in the signs and symptoms of TED after two infusions of veligrotug compared to placebo. Across all veligrotug treated patients in the chronic TED trial, 42% were proptosis responders, 40% achieved a CAS of 0 or 1, and no patients had complete resolution of their diplopia. In the phase 1/2 clinical trials of both active and chronic TED, veligrotug had a favorable safety profile and was well-tolerated by all patients treated in all dose cohorts.

We are conducting a global pivotal program for veligrotug, including evaluating its efficacy and safety in two global well-controlled phase 3 clinical trials, THRIVE and THRIVE-2, for the treatment of active and chronic TED, respectively. THRIVE and THRIVE-2 are each designed to compare a five-dose IV treatment arm of veligrotug at 10 mg/kg, dosed three weeks apart, to placebo. This five-dose veligrotug regimen features fewer infusions and a shorter time per infusion compared to teprotumumab, the currently marketed IGF-1R inhibitor. On September 10, 2024, we announced topline data from the THRIVE study, which enrolled 113 patients, randomized to veligrotug (n=75) and placebo (n=38). THRIVE achieved all primary and secondary endpoints with a high level of statistical significance (p < 0.0001) and was generally well-tolerated, with no treatment-related serious adverse events (“SAEs”). Veligrotug additionally showed a rapid onset of treatment effect, with the majority (53%) of veligrotug-treated patients achieving a proptosis response as early as three weeks. On December 16, 2024, we announced topline data from the THRIVE-2 study, which enrolled 188 patients, randomized to veligrotug (n=125) and placebo (n=63). THRIVE-2 achieved all primary and secondary endpoints with statistical significance and was generally well-tolerated. Veligrotug continued to demonstrate a rapid onset of treatment effect, with a statistically significant proptosis response as early as three weeks and a statistically significant reduction and resolution of diplopia as early as six weeks. THRIVE-2 is the first global phase 3 study in patients with chronic TED to demonstrate a statistically significant and clinically meaningful diplopia responder rate and rate of diplopia complete resolution. To meet the 300 patient standard safety database

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requirements for the veligrotug biologics license application (“BLA”), we are conducting our STRIVE clinical trial (safety database inclusive of patients from the THRIVE and THRIVE-2 trials). STRIVE is a global study of veligrotug in TED patients that utilizes broad inclusion criteria (e.g., any severity or duration of disease) and is randomized 3:1 (10 mg/kg IV with an active control of 3 mg/kg IV). In January 2025, we completed enrollment in STRIVE with a total of 231 patients, exceeding the enrollment target of 212 due to patient demand. We have also completed enrollment of the open label extension study for non-responding patients in THRIVE and THRIVE-2. We anticipate submitting a BLA for veligrotug in the second half of 2025 and an MAA to the EMA in the first half of 2026.

In addition to our intravenous veligrotug program, VRDN-003 is our subcutaneous product candidate currently in pivotal development in TED, which we selected in December 2023 following positive data in a phase 1 clinical trial in healthy volunteers.

The VRDN-003 phase 1 clinical study showed VRDN-003 to have a prolonged half-life of 40 to 50 days, which is four to five times that of veligrotug. Because of the healthy volunteer data and the similarities between the veligrotug and VRDN-003 antibodies, we expect VRDN-003 to have similar clinical responses at the exposure levels of veligrotug that led to robust clinical activity in its clinical trials to date in TED. Further, pharmacokinetic modeling of VRDN-003 based on the healthy volunteer data predicted that exposure levels of VRDN-003 could be achieved that are equivalent to exposure levels of veligrotug that produced clinically meaningful results with multiple dosing regimens of VRDN-003, i.e., subcutaneous injection every two, four, or eight weeks.

We are conducting a global pivotal program for VRDN-003, including evaluating its efficacy and safety in two global well-controlled phase 3 clinical trials, REVEAL-1 and REVEAL-2, for the treatment of active and chronic TED, respectively. Both studies will evaluate subcutaneous VRDN-003 administered every four weeks or every eight weeks and will assess outcomes versus placebo. Patient enrollment and dosing continues in both studies. In addition, to enable BLA submission for VRDN-003, we have initiated a safety study to meet the 300 patient standard safety database requirement (to also include patients from the REVEAL-1 and REVEAL-2 trials) and plan to initiate an auto-injector study in 2025 to enable launching VRDN-003 in an auto-injector device, if approved. We anticipate topline data for REVEAL-1 and REVEAL-2 in the first half of 2026, and we anticipate submitting a BLA for VRDN-003 for the treatment of TED by the end of 2026.

Development of FcRn Inhibitors

In addition to developing therapies for TED, we are also developing a portfolio of engineered FcRn inhibitors, including VRDN-006 and VRDN-008. FcRn inhibitors have the potential to treat a broad array of autoimmune diseases, representing a possible significant commercial market opportunity. Our multi-pronged engineering approach has resulted in a portfolio of FcRn-targeting molecules that leverage the clinically and commercially validated mechanism of FcRn inhibition while potentially addressing the limitations of current agents such as incomplete immunoglobulin G (“IgG”) suppression, safety, and inconvenience of dosing.

VRDN-006 is a highly selective Fc fragment that inhibits FcRn and is designed to be a convenient subcutaneous and self-administered option for patients. In non-human primate (“NHP”) studies, VRDN-006 demonstrated specificity for blocking FcRn-IgG interactions while not showing decreases in albumin or increases in low-density lipoprotein (“LDL”) levels, which are known potential side effects associated with certain full-length anti-FcRn monoclonal antibodies. In our head-to-head NHP studies, VRDN-006 demonstrated comparable potency and IgG reductions to efgartigimod, which is the current standard of care in FcRn inhibition, as well as a similar safety profile. We submitted an Investigational New Drug Application (“IND”) for VRDN-006 in December 2024, which cleared in January 2025, and we expect proof-of-concept IgG reduction data in healthy volunteers in the third quarter of 2025.

VRDN-008 is a half-life extended bispecific FcRn inhibitor comprising an Fc fragment and an albumin-binding domain designed to prolong IgG suppression and provide a potentially best-in-class subcutaneous option for patients. In a single, high-dose, head-to-head study in NHPs, VRDN-008 demonstrated three times the half-life of efgartigimod. Additionally, VRDN-008 showed a deeper and more sustained IgG reduction with peak IgG reductions that were 20% deeper than efgartigimod while not showing decreases in albumin or increases in LDL levels. NHP studies are ongoing to generate additional data for VRDN-008. Once completed, we plan to use the totality of VRDN-008’s NHP data to build a robust pharmacokinetic and pharmacodynamic model to predict potential human dosing regimens for VRDN-008. We anticipate submitting an IND for VRDN-008 by the end of 2025.

Global Economic Considerations

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The global macroeconomic environment is uncertain, and could be negatively affected by, among other things, increased U.S. trade tariffs and trade disputes with other countries, instability in the global capital and credit markets, supply chain weaknesses, and instability in the geopolitical environment, including as a result of the Russian invasion of Ukraine, the rising tensions between China and Taiwan, the conflict in Israel and surrounding area and other political tensions. Such challenges have caused, and may continue to cause, recession fears, concerns regarding potential sanctions, high interest rates, foreign exchange volatility and inflationary pressures. At this time, we are unable to quantify the potential effects of this economic instability on our future operations.

Financial Operations Overview

Revenue

Our revenue has historically consisted primarily of up-front payments for licenses, milestone payments, and payments for other research and development services earned under license and collaboration agreements as well as for amounts earned under certain grants we have been awarded.

In October 2020, we became party to a license agreement with Zenas BioPharma. Since February 2021, we have entered into several letter agreements with Zenas BioPharma in which we agreed to provide assistance to Zenas BioPharma with certain development activities, including manufacturing (collectively with the license agreement, the “Zenas Agreements”). Under the terms of the Zenas Agreements, we granted Zenas BioPharma an exclusive license to develop, manufacture, and commercialize certain IGF-1R directed antibody products for non-oncology indications in the greater area of China in exchange for upfront non-cash consideration and non-refundable milestone payments upon achieving specific milestone events during the contract term. Zenas BioPharma announced that it had obtained IND approval in China in July 2022. Under the license agreement, we received a $1.0 million milestone payment from Zenas BioPharma. Additionally, we are eligible to receive royalty payments based on a percentage of the annual net sales of any licensed products sold on a country-by-country basis in the greater area of China. The royalty percentage may vary based on different tiers of annual net sales of the licensed products made. Zenas BioPharma is obligated to make royalty payments to us for the royalty term in the Zenas Agreements. In May 2022, we entered into a Manufacturing Development and Supply Agreement with Zenas BioPharma to manufacture and supply, or have manufactured and supplied, clinical drug product for development purposes. In January 2025, Zenas BioPharma sublicensed their rights under the license agreement to Zai Lab and assigned the Manufacturing Development and Supply Agreement to Zai Lab in connection with the sublicense transaction.

In the future, we expect to continue to generate revenue from a combination of license fees and other up-front payments, payments for research and development services, milestone payments, product sales, and royalties in connection with strategic alliances. We expect that any revenue we generate could fluctuate from quarter to quarter as a result of the timing of our achievement of development and commercial milestones, the timing and amount of payments relating to such milestones and the extent to which any of our product candidates are approved and successfully commercialized by us or our strategic alliance collaborators, if any. If we or our strategic alliance collaborators, if any, fail to develop product candidates in a timely manner or to obtain regulatory approval for them, then our ability to generate future revenue, and our results of operations and financial position would be adversely affected.

Research and Development Expenses

Research and development expenses consist of costs incurred for the research and development of our therapeutic programs and product candidates, which include:

•employee-related expenses, including salaries, severance, retention, benefits, insurance, and share-based compensation expense;

•expenses incurred under agreements with CROs, investigative sites that conduct our clinical trials, and other clinical trial-related vendors, and consultants;

•the costs of acquiring, developing, and manufacturing and testing clinical and nonclinical materials, including costs incurred under agreements with CDMOs;

•costs associated with nonclinical activities and regulatory operations;

•license fees and milestone payments related to the acquisition and retention of certain licensed technology and intellectual property rights; and

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•facilities, depreciation, market research, and other expenses, which include allocated expenses for rent and maintenance of facilities, depreciation of leasehold improvements and equipment, and laboratory supplies.

We make non-refundable advance payments for goods and services that will be used in future research and development activities. These payments are recorded as expense in the period in which we receive or take ownership of the goods or when the services are performed.

We record up-front and milestone payments to acquire and retain contractual rights to in-licensed technology and intellectual property rights as research and development expenses when incurred if there is uncertainty in our receiving future economic benefit from the acquired contractual rights. We consider future economic benefits from acquired contractual rights to licensed technology to be uncertain until such a drug candidate is approved by the FDA or other regulatory authorities, or when other significant risk factors are abated.

We expect that our research and development expenses will increase as we expand our clinical development programs and initiate new clinical trials. The process of conducting clinical trials and nonclinical studies necessary to obtain regulatory approval is costly and time consuming. We, or our strategic alliance collaborators, if any, may never succeed in achieving marketing approval for any of our product candidates. The probability of success for each product candidate may be affected by numerous factors, including clinical data, nonclinical data, competition, manufacturability and commercial viability of our product candidates.

Successful development of future product candidates is highly uncertain and may not result in approved products. Completion dates and completion costs can vary significantly for each future product candidate and are difficult to predict. We anticipate we will make determinations as to which programs to pursue and how much funding to direct to each program on an ongoing basis in response to our ability to maintain or enter into new strategic alliances with respect to each program or potential product candidate, the scientific and clinical success of each future product candidate, and ongoing assessments as to each future product candidate’s commercial potential. We will need to raise additional capital and may seek additional strategic alliances in the future in order to advance the various clinical trials that are part of our clinical development program described above.

General and Administrative Expenses

General and administrative expenses consist primarily of salaries and related benefits, including share-based compensation, and severance and retention benefits related to our finance, accounting, human resources, legal, business development, and other support functions, professional fees for auditing, tax, and legal services, market research and other professional and consulting fees to prepare for commercial activities, as well as insurance, board of director compensation, consulting, and other administrative expenses.

Other Income, net

Other income, net consists primarily of interest income, net of fees, and various income items of a non-recurring nature. Interest expense consists of cash and non-cash interest expense on our long-term debt. We earn interest income from interest-bearing accounts, money market funds, and short-term investments.

Critical Accounting Policies and Estimates

This discussion and analysis of financial condition and results of operations is based on our consolidated financial statements, which have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”). The preparation of financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, and expenses. On an ongoing basis, we evaluate these estimates and judgments. We base our estimates on historical experience and on various assumptions that we believe to be reasonable under the circumstances. These estimates and assumptions form the basis for making judgments about the carrying values of assets and liabilities and the recording of expenses that are not readily apparent from other sources. Actual results may differ materially from these estimates. We believe that the accounting policy discussed below is critical to understanding our historical and future performance, as this policy relates to the more significant areas involving our judgments and estimates.

Clinical Trial and Nonclinical Study Accruals

We make estimates of our accrued expenses as of each balance sheet date in our consolidated financial statements based on certain facts and circumstances at that time. Our accrued expenses for nonclinical studies and clinical trials are based on estimates of costs incurred for services provided by external service providers and for other trial-related activities. The timing

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and amount of expenses we incur through our external service providers depend on a number of factors, such as site initiation, patient screening, enrollment, delivery of reports, and other events. In accruing for these activities, we obtain information from various sources and estimate the level of effort or expense allocated to each period. Adjustments to our research and development expenses may be necessary in future periods as our estimates change.

Results of Operations

Comparison of the Years Ended December 31, 2024 and 2023

Year EndedDecember 31,

(in thousands)

Revenue

Revenue was $0.3 million for the years ended December 31, 2024 and 2023. Revenue for both periods was attributable to our collaboration agreement with Zenas BioPharma.

Research and Development Expenses

Year EndedDecember 31,

(in thousands)

Direct research and development expenses

Other nonclinical and research and development costs 3,001 13,540 (10,539)

Unallocated expenses

Direct costs related to the TED portfolio increased by $59.5 million during the year ended December 31, 2024 compared to the year ended December 31, 2023, primarily attributable to:

•$50.5 million increase in clinical trial costs and a $10.9 million increase in chemistry, manufacturing and controls costs to support the veligrotug and VRDN-003 clinical trials.

Direct costs related to the FcRn inhibitor portfolio increased by $12.0 million during the year ended December 31, 2024 compared to the year ended December 31, 2023, primarily attributable to:

•$14.0 million increase in nonclinical research to advance the FcRn inhibitor portfolio; and

•$14.0 million increase in chemistry, manufacturing and controls costs to support IND-enabling activities.

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These increases were partially offset by a $16.3 million decrease in milestone, license and option fees as a result expenses incurred during the year ended December 31, 2023, primarily due to a $15.0 million upfront payment related to the development of subcutaneous delivery systems.

Direct costs related to other nonclinical research and development decreased by $10.5 million during the year ended December 31, 2024 compared to the year ended December 31, 2023, primarily attributable to:

•$5.7 million decrease in milestone, license and option fees as a result of an upfront payment for an exclusive license and collaboration agreement during the year ended December 31, 2023;

•$3.9 million decrease in other nonclinical research expenses due to prioritization of the FcRn inhibitor portfolio.

Personnel-related costs increased $15.6 million during the year ended December 31, 2024 compared to the year ended December 31, 2023, primarily attributable to:

•$11.3 million increase in personnel related costs, due primarily to increased headcount to support our ongoing research and development efforts, including share-based compensation and other employee compensation and recruiting costs; and

•$4.3 million increase in severance costs primarily related to separation agreements with former executive officers, including a $3.2 million increase in share-based compensation related to the acceleration of stock option vesting during the year ended December 31, 2024.

Facility and other operating costs increased $1.9 million during the year ended December 31, 2024 compared to the year ended December 31, 2023, primarily attributable to an increase in professional services fees for consultants and contractors, as well as an increase in facility and information technology costs to support our ongoing research and development efforts.

We expect our research and development expenses to continue to increase as we work to progress our clinical and nonclinical programs.

General and Administrative Expenses

General and administrative expenses were $61.1 million during the year ended December 31, 2024, compared to $95.0 million during the year ended December 31, 2023. The $33.9 million decrease in general and administrative expenses is primarily attributable to the following:

•$27.2 million decrease in severance costs, due primarily to separation agreements with former executive officers, including a $22.7 million decrease in share-based compensation related to the modification and acceleration of stock option vesting for former executives. Share-based compensation costs for the year ended December 31, 2024 included $3.4 million in costs related to the modification and acceleration of vesting for former executive officers as compared to $26.1 million for the year ended December 31, 2023; and

•$8.4 million decrease in personnel-related costs, primarily due to a decrease in headcount and a decrease in share-based compensation and other employee compensation and recruiting costs.

These decreases were partially offset by a $2.9 million increase in legal services, market research and other professional and consulting fees to prepare for commercial activities.

Other Income, net

Other income, net was $29.1 million during the year ended December 31, 2024 compared to $16.7 million during the year ended December 31, 2023. Other income, net for the year ended December 31, 2024 is comprised of $31.6 million of interest income earned on short-term investments as well as $0.3 million of sub-lease income, offset by $2.2 million in interest expense related to our Hercules Loan and Security Agreement, and $0.6 million in other losses. Other income, net for the year ended December 31, 2023 is comprised of $18.2 million of interest income earned on short-term investments as well as $0.3 million of sub-lease income, offset by $1.3 million in interest expense related to our Hercules Loan and Security Agreement and $0.5 million in other losses. The increase in interest income is primarily attributable to higher interest rates and higher average short-term investments balances during the year ended December 31, 2024 as compared to the year ended December 31, 2023.

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Liquidity and Capital Resources

We have funded our operations to date principally through proceeds received from the sale of our common stock, our Series A Convertible Preferred Stock, our Series B Convertible Preferred Stock and other equity securities, debt financings, license fees, and reimbursements received under collaboration agreements. As of December 31, 2024, we had $717.6 million in cash, cash equivalents, and short-term investments. We expect that our current cash, cash equivalents and short-term investments will be sufficient to fund our planned operations, including our clinical development plan described elsewhere in this Annual Report, into the second half of 2027. In addition, as of December 31, 2024, the Company has access to additional undrawn funds under the Hercules Amended Term Loan, as described below.

We have no products approved for commercial sale and have not generated any revenue from product sales. Since our inception and through December 31, 2024, we have generated an accumulated deficit of $995.9 million. Substantially all of our operating losses resulted from expenses incurred in connection with our research and development programs and from general and administrative costs associated with our operations.

We will continue to require substantial additional capital to continue the development of our product candidates, and potential commercialization activities, and to fund our ongoing operations, including our clinical development plan described above. The amount and timing of future funding requirements will depend on many factors, including the pace and results of our clinical development efforts, equity financings, securing additional license and collaboration agreements, and issuing debt or other financing vehicles. Our ability to secure capital is dependent upon a number of factors, including success in developing our technology and product candidates. Failure to raise capital as and when needed, on favorable terms or at all, would have a negative impact on our financial condition and our ability to develop our product candidates. Changing circumstances, such as changes in the scope and timing of our clinical studies, may cause us to consume capital significantly faster or slower than we currently anticipate. If we are unable to acquire additional capital or resources, we will be required to modify our operational plans to complete future milestones. We have based these estimates on assumptions that may prove to be wrong, and we could exhaust our available financial resources sooner than we currently anticipate. We may be forced to reduce our operating expenses and raise additional funds to meet our working capital needs, principally through the additional sales of our securities or debt financings or entering into strategic collaborations.

Our material cash requirements include obligations as of December 31, 2024, as well as resources required to fulfill our research and development activities and the effects that such obligations and activities are expected to have on our liquidity and cash flows in future periods. We expect that our operating losses will fluctuate significantly from quarter to quarter and year to year due to timing of our development activities and efforts to achieve regulatory approval.

Our commitments primarily consist of obligations under our collaboration, development, and license agreements. Under these agreements, we are required to make milestone payments upon successful completion of certain regulatory and sales milestones. The payment obligations under the license agreements are contingent upon future events such as our achievement of specified development, regulatory and commercial milestones and we will be required to make development milestone payments and royalty payments in connection with the sale of products developed under these agreements. As of December 31, 2024, we were unable to estimate the timing or likelihood of achieving the milestones or making future product sales. For additional information regarding our agreements, see Note 7 and Note 8 to our condensed consolidated financial statements included elsewhere in this report.

Our operating lease obligations primarily consist of lease payments on our office space in Waltham, Massachusetts and our lab and office facilities in Boulder, Colorado. For additional information regarding our lease obligations, see Note 8 to our condensed consolidated financial statements included elsewhere in this report.

Additionally, we have entered into agreements with third-party contract manufacturers for the manufacture and processing of certain of our product candidates for clinical testing purposes, and we have entered and will enter into other contracts in the normal course of business with contract research organizations for clinical trials and other vendors for other services and products for operating purposes. These agreements generally provide for termination or cancellation with appropriate notice, other than for costs already incurred. We expect to enter into additional clinical development, contract research, clinical and commercial manufacturing, supplier and collaborative research agreements in the future, which may require upfront payments and long-term commitments of capital resources.

If we raise additional funds through the issuance of debt, the obligations related to such debt could be senior to rights of holders of our capital stock and could contain covenants that may restrict our operations. Should additional capital not be available to us in the near term, or not be available on acceptable terms, we may be unable to realize value from our assets and discharge our

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liabilities in the normal course of business, which may, among other alternatives, cause us to further delay, substantially reduce, or discontinue operational activities to conserve our cash resources.

Loan and Security Agreement with Hercules Capital, Inc.

On April 1, 2022, we entered into the Hercules Loan and Security Agreement among the Company, certain of our subsidiaries from time to time party thereto (together with the Company, collectively, the “Borrower”), Hercules and certain other lenders party thereto (the “Lenders”). Under the Hercules Loan and Security Agreement, the Lenders provided us with access to a term loan with an aggregate principal amount of up to $75.0 million, in four tranches (collectively the “Term Loan”), including an initial tranche of $25.0 million, which was available to us through June 15, 2023. Upon signing, we drew an initial principal amount of $5.0 million.

Per the terms of the Hercules Loan and Security Agreement, we were originally obligated to make interest-only payments through April 1, 2024, which was extended to October 1, 2024 upon the achievement of a development milestone in August 2022. We were required to repay the Term Loan amount in equal monthly installments of the principal amount and interest between the end of the interest-only period and the maturity date of October 1, 2026. In addition, we were required to pay an end-of-term fee equal to 6% of the principal amount of funded Term Loan Advances (as defined in the Hercules Loan and Security Agreement) at maturity, which were being accreted as additional interest expense over the term of the loan.

In August 2023, we executed an amendment to the Hercules Loan and Security Agreement (the “Hercules Amendment”). The Hercules Amendment was determined to substantially alter the Hercules Loan and Security Agreement and therefore was accounted for as a debt extinguishment. We recognized a loss on debt extinguishment of $0.2 million in August 2023 related to unamortized debt discount and debt issuance costs.

Under the Hercules Amendment, the Lenders provided the Company access to an increased term loan with an aggregate principal amount of up to $150 million, in four tranches (collectively the “Amended Term Loan”), consisting of (1) an initial tranche of $50.0 million, $5.0 million of which was drawn at closing of the Hercules Loan and Security Agreement in April 2022, $15.0 million of which was drawn at closing of the Hercules Amendment in August 2023, $5.0 million of which was available through December 15, 2023, and $25.0 million of which was available from July 1, 2024 through December 15, 2024; (2) a second tranche of $20.0 million, subject to achievement of certain regulatory milestones, available through February 15, 2025; (3) a third tranche of $20.0 million, subject to achievement of certain regulatory milestones, available through March 31, 2025; and (4) a fourth tranche of $60.0 million subject to approval by the Lenders’ investment committee(s), available through June 15, 2025. As of December 31, 2024, the milestones for the second and third tranches have been achieved. The obligations of the Borrower under the Hercules Amendment agreement are secured by substantially all of the assets of the Borrower, excluding the Borrower’s intellectual property. The Amended Term Loan has a maturity date of October 1, 2026.

The Amended Term Loan bears interest at a floating per annum rate equal to the greater of (i) 7.45% and (ii) 4.2% above the Prime Rate (as defined therein), provided that the Term Loan interest rate shall not exceed a per annum rate of 8.95%. Interest is payable monthly in arrears on the first day of each month. The interest rate as of December 31, 2024 was 8.95%.

Per the terms of the Hercules Amendment, we were originally obligated to make interest-only payments through April 1, 2025. Upon achievement of certain development milestones related to our topline results for our phase 3 THRIVE trial in September 2024, the interest-only period was extended to October 1, 2025. Upon achievement of certain development milestones related to topline results for the Company’s phase 3 THRIVE-2 trial in December 2024, the interest-only period was further extended to April 1, 2026. The Borrower is required to repay the Amended Term Loan amount in equal monthly installments of the principal amount and interest between the end of the interest-only period and the maturity date of October 1, 2026. In addition, the Borrower is required to pay an end-of-term fee equal to 6% of the principal amount of funded Amended Term Loan advances at maturity, which are being accreted as additional interest expense over the term of the loan.

ATM Agreement

In September 2022, we entered into the September 2022 ATM Agreement with Jefferies pursuant to which we may offer and sell shares of our common stock having an aggregate offering price of up to $175.0 million from time to time at prices and on terms to be determined by market conditions at the time of offering, with Jefferies acting as the sales agent. Jefferies will receive a commission of 3.0% of the gross proceeds of any shares of common stock sold under the September 2022 ATM Agreement. During the year ended December 31, 2022, 964,357 shares were sold under the September 2022 ATM Agreement at a weighted average price of $26.01 per share, for aggregate net proceeds of approximately $24.2 million, including commissions to Jefferies as a sales agent. During the year ended December 31, 2023, the Company sold 684,298 shares under

89

the September 2022 ATM Agreement with Jefferies at a weighted average price of $22.30 per share, for aggregate net proceeds of approximately $14.8 million, including commissions to Jefferies as a sales agent.

During the year ended December 31, 2024, 3,058,751 shares were sold under the September 2022 ATM Agreement at a weighted average price of $22.86 per share, for aggregate net proceeds of approximately $67.7 million, including commissions to Jefferies as a sales agent. During the quarter ended December 31, 2024, the Company sold 1,497,181 shares under the September 2022 ATM Agreement with Jefferies at a weighted average price of $22.47 per share, for aggregate net proceeds of approximately $32.6 million, including commissions to Jefferies as a sales agent.

Public Offerings

In September 2024, we entered into an underwriting agreement with Jefferies, Goldman Sachs & Co. LLC and Stifel, Nicolaus & Company, Incorporated related to the offer and sale (the “September 2024 Public Offering”) of 12,466,600 shares of our common stock, which includes 1,800,000 shares of common stock issued in connection with the exercise in full by the underwriters of their option to purchase additional shares at a public offering price of $18.75 per share, and 20,000 shares of our Series B Convertible Preferred Stock at a price per share of $1,250.0625 per share. The aggregate gross proceeds to us from the September 2024 Public Offering, including the exercise of the option, were approximately $258.8 million, before deducting underwriting discounts and commissions and other offering expenses payable by us.

In January 2024, we entered into an underwriting agreement with Jefferies LLC (“Jefferies”) and Leerink Partners LLC relating to the offer and sale (the “January 2024 Public Offering”) of 7,142,858 shares of our common stock at a public offering price of $21.00 per share. The aggregate gross proceeds to us from the January 2024 Public Offering were approximately $150.0 million, before deducting underwriting discounts and commissions and other offering expenses payable by us.

Private Placements

In November 2023, we issued and sold in private placement transactions an aggregate of 8,869,797 shares of our common stock at a price per share of $12.38 and 92,312 shares of our Series B Convertible Preferred Stock at a price per share of $825.3746, pursuant to securities purchase agreements with certain institutional and accredited investors. We received aggregate gross proceeds of approximately $186.0 million, before deducting offering expenses payable by us.

Summarized cash flows for the year ended December 31, 2024 and 2023 are as follows:

Year EndedDecember 31,

(in thousands)

Net cash provided by (used in):

Operating Activities

Net cash used in operating activities was $232.3 million for the year ended December 31, 2024, and primarily consisted of a net loss of $269.9 million, adjusted for non-cash items of $28.0 million, including share-based compensation of $42.2 million partially offset by accretion and amortization of premiums and discounts on available-for-sale securities of $15.7 million, and working capital adjustments of $9.6 million. The change in working capital was primarily related to an increase of $21.5 million in accounts payable and accrued and other liabilities, partially offset by an increase of $11.8 million in prepaid expenses and other current assets due to the timing of payments and prepayments to vendors for ongoing clinical trial and manufacturing activities.

Net cash used in operating activities was $184.2 million for the year ended December 31, 2023, and primarily consisted of a net loss of $237.7 million, adjusted for non-cash items of $63.0 million, including share-based compensation of $67.2 million and working capital adjustments of $9.4 million. The change in working capital was primarily related to a decrease of $7.0 million

90

in accounts payable and accrued and other liabilities and an increase of $2.1 million in prepaid expenses and other current assets due to the timing of payments and prepayments to vendors for ongoing clinical trial and manufacturing activities.

Investing Activities

Net cash used in investing activities was $228.7 million during the year ended December 31, 2024. Net cash used in investing activities in 2024 primarily consisted of net purchases of investments of $228.1 million and property and equipment purchases of $0.5 million.

Net cash used in investing activities was $94.3 million during the year ended December 31, 2023. Net cash used in investing activities in 2023 primarily consisted of net purchases of investments of $93.4 million and property and equipment purchases of $0.9 million.

Financing Activities

Net cash provided by financing activities was $457.7 million during the year ended December 31, 2024. Net cash provided by financing activities in 2024 was primarily driven by net proceeds of $451.7 million from the 2024 Public Offerings and the September 2022 ATM Agreement, as well as $5.3 million in proceeds from the exercise of stock options and $0.7 million in proceeds from the issuance of common stock under our employee stock purchase plan.

Net cash provided by financing activities was $225.7 million for the year ended December 31, 2023. Net cash provided by financing activities in 2023 was primarily driven by net proceeds of $189.5 million from the 2023 Private Placement and the September 2022 ATM Agreement, as well as $19.3 million in proceeds from the exercise of stock options, $14.5 million in net proceeds from the Hercules Amendment, $1.9 million in proceeds from the exercise of warrants and $0.6 million in proceeds from the issuance of common stock under our employee stock purchase plan.

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Interest Rate Fluctuation Risk

As of December 31, 2024, we had cash, cash equivalents and short-term investments of $717.6 million, consisting of money market accounts, corporate bonds, and U.S. Treasury Securities. The primary objectives of our investment activities are to preserve principal, provide liquidity and maximize income without significantly increasing risk. Our primary exposure to market risk is interest rate sensitivity, which is affected by changes in the general level of U.S. interest rates, particularly because our cash equivalents and short-term investments are primarily invested in U.S. Treasury Securities, corporate paper and bonds and money market funds. A change in prevailing interest rates, and/or credit risk, may cause the fair value of the investment to fluctuate. The average duration of all of our available-for-sale investments held as of December 31, 2024, was less than 12 months. Due to the relatively short-term nature of these financial instruments, we believe there is no material exposure to interest rate risk, and/or credit risk, arising from our portfolio of financial instruments.

Inflation Fluctuation Risk

Inflation generally affects us by increasing our cost of labor and the cost of services provided by our vendors. We do not believe that inflation had a material effect on our business, financial condition or consolidated results of operations during the years ended December 31, 2024 and 2023.

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

The financial statements and supplemental data required by this item are set forth on the pages indicated in Part IV, Item 15(a)(1) of this Annual Report.

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

None.

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ITEM 9A. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed in the reports that we file under the Exchange Act, is recorded, processed, summarized, and reported within the time periods specified in the rules and forms of the SEC, and that such information is accumulated and communicated to our management, including our principal executive officer and principal financial officer, to allow timely decisions regarding required disclosures. In designing and evaluating the disclosure controls and procedures, management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and management is required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures. Under the supervision and with the participation of our principal executive officer, principal financial officer, and other senior management personnel, we evaluated the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) as of the end of the period covered by this Annual Report. Based on this evaluation, our principal executive officer and principal financial officer have concluded that our disclosure controls and procedures were effective as of the end of the period covered by this Annual Report.

Management’s Report on Internal Control Over Financial Reporting

Internal control over financial reporting refers to the process designed by, or under the supervision of, our principal officer and principal financial officer, and effected by our board of directors, management and other personnel, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with U.S. GAAP, and includes those policies and procedures that: (1) pertain to the maintenance of records that in reasonable detail accurately and fairly reflect the transactions and dispositions of our assets, (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with U.S. GAAP, and that our receipts and expenditures are being made only in accordance with authorizations of our management and directors and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the Company’s assets that could have a material effect on the financial statements.

Internal control over financial reporting cannot provide absolute assurance of achieving financial reporting objectives because of its inherent limitations. Internal control over financial reporting is a process that involves human diligence and compliance and is subject to lapses in judgment and breakdowns resulting from human failures. Internal control over financial reporting also can be circumvented by collusion or improper management override. Because of such limitations, there is a risk that material misstatements may not be prevented or detected on a timely basis by internal control over financial reporting. However, these inherent limitations are known features of the financial reporting process. Therefore, it is possible to design into the process safeguards to reduce, though not eliminate, this risk.

Management is responsible for establishing and maintaining adequate internal control over our financial reporting, as such term is defined in Rule 13a-15(f) under the Exchange Act. Under the supervision and with the participation of our management, including our principal executive officer and principal financial officer, we conducted an evaluation of the effectiveness of our internal control over financial reporting as of the end of the period covered by this Annual Report. Management used the framework set forth in the report entitled “Internal Control — Integrated Framework (2013 Framework)” published by the Committee of Sponsoring Organizations of the Treadway Commission to evaluate the effectiveness of our internal control over financial reporting. Based on its evaluation, management concluded that our internal control over financial reporting was effective at a reasonable level of assurance as of December 31, 2024, the end of our most recent fiscal year.

The effectiveness of our internal control over financial reporting as of December 31, 2024, has been audited by KPMG LLP, an independent registered public accounting firm, as stated in their report which appears in this Annual Report on Form 10-K.

Changes in Internal Control Over Financial Reporting

There have been no changes in our internal control over financial reporting that occurred during our most recent fiscal quarter that have materially affected, or are reasonably likely to materially effect, our internal control over financial reporting.

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ITEM 9B. OTHER INFORMATION

Rule 10b5-1 Trading Plans

During the three months ended December 31, 2024, none of the Company’s directors or officers adopted or terminated any “Rule 10b5-1 trading arrangement” or any “non-Rule 10b5-1 trading arrangement,” as each term is defined in Item 408 or Regulation S-K.

Amended Executive Employment Agreements

On February 25, 2025, the Company and Stephen Mahoney, the Company’s President, Chief Executive Officer and Director, entered into an amendment, effective January 1, 2025, to his employment agreement with the Company, dated as of October 27, 2023 (as amended, the “CEO Executive Employment Agreement”). On February 25, 2025, the Company also entered into amendments to the existing employment agreements (as amended, the “Non-CEO Executive Employment Agreements”) with Thomas Beetham, the Company’s Chief Operating Officer, Seth Harmon, the Company’s Chief Financial Officer, and Jennifer Tousignant, the Company’s Chief Legal Officer (each, an “Executive” and, collectively, the “Non-CEO Executives” and the Non-CEO Executives, together with Mr. Mahoney, the “Executives”).

The principal terms of the Executives’ compensation arrangements, including annual base salary and target bonus opportunity, were not modified pursuant to the amendments. The amendments to the CEO Executive Employment Agreement and the Non-CEO Executive Employment Agreements provide that (a) a change in title, reporting relationships and/or responsibilities of the applicable Executive could constitute a material reduction in such Executive’s authority, duties or responsibilities pursuant to which such Executive may terminate his or her employment with the Company by resigning for “good reason,” and that the determination of whether a material reduction has occurred shall be made by the Company in good faith other than in connection with a change in control (as defined in the applicable agreement); and (b) in the event of an involuntary termination in connection with a change in control, each Executive shall be entitled to receive (i) continued payment of his or her annual base salary in effect immediately prior to the termination for a period of 24 months, in the case of Mr. Mahoney, or 12 months, in the case of the Non-CEO Executives, payable over the Company’s regular payroll schedule; (ii) reimbursement of COBRA coverage for up to 24 months, in the case of Mr. Mahoney, or 12 months, in the case of the Non-CEO Executives (or, if sooner, until he or she receives substantially similar coverage from another employer or ceases to be eligible for COBRA coverage); (iii) the immediate vesting of all of the Executive’s outstanding stock options and other equity awards that are subject to time-based vesting requirements; and (iv) payment of his or her Annual Performance Bonus (as defined in the CEO Executive Employment Agreement or the Non-CEO Executive Employment Agreements, as applicable) at either two times the full Target Amount (as defined in the CEO Executive Employment Agreement), with respect to Mr. Mahoney, or the full Target Amount (as defined in the applicable Non-CEO Executive Employment Agreement), with respect to the Non-CEO Executives, in each case within thirty days after the effective date of the involuntary termination.

The foregoing summaries of the CEO Executive Employment Agreement and the Non-CEO Executive Employment Agreements do not purport to be complete and are qualified in their entirety by reference to the full text of the applicable Executive’s employment agreement, as amended. Copies of the amendments for each of the CEO Executive Employment Agreement, with respect to Mr. Mahoney, and Non-CEO Executive Employment Agreements, with respect to each of Mr. Beetham, Mr. Harmon and Ms. Tousignant, are filed as exhibits to this Annual Report.

ITEM 9C. DISCLOSURE REGARDING FOREIGN JURISDICTIONS THAT PREVENT INSPECTION

Not applicable.

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PART III

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS, AND CORPORATE GOVERNANCE

The information required by this Item is incorporated by reference to our 2025 Proxy Statement to be filed with the SEC within 120 days after December 31, 2024.

Our board of directors has adopted a written code of business conduct and ethics that applies to our directors, officers, and employees, including our principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions. A current copy of the code is posted on our website, which is located at www.viridiantherapeutics.com. If we make any substantive amendments to, or grant any waivers from, the code of business conduct and ethics for any officer or director, we will disclose the nature of such amendment or waiver on our website or in a Current Report on Form 8-K.

ITEM 11. EXECUTIVE COMPENSATION

The information required by this Item 11 is incorporated herein by reference to our 2025 Proxy Statement, including under headings “Executive Officer and Director Compensation,” “Compensation Discussion and Analysis,” and “Directors, Executive Officers and Corporate Governance – Compensation Committee Interlocks and Insider Participation, “Compensation Committee Report” and “Risks Related to Compensation Practices and Polices.” The section titled “Pay Versus Performance” in our 2025 Proxy Statement is not incorporated by reference herein.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

The information required by this Item 12 is incorporated herein by reference to our 2025 Proxy Statement, including under headings “Security Ownership of Certain Beneficial Owners and Management” and “Securities Authorized for Issuance Under Equity Compensation Plans.”

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS AND DIRECTOR INDEPENDENCE

The information required by this Item 13 is incorporated herein by reference to our 2025 Proxy Statement, including under headings “Directors, Executive Officers and Corporate Governance” and “Transactions with Related Persons.”

ITEM 14. PRINCIPAL ACCOUNTING FEES AND SERVICES

The information required by this Item 14 is incorporated herein by reference to our 2025 Proxy Statement, including under the heading “Ratification of Selection of Independent Registered Accounting Firm.”

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PART IV

ITEM 15. EXHIBITS, FINANCIAL STATEMENT SCHEDULES

(a)(1) Financial Statements

The financial statements required by this item are submitted in a separate section beginning on page F-1 of this Annual Report.

(a)(2) Financial Statement Schedules

Financial statement schedules have been omitted because they are either not required, not applicable, or the information is otherwise included.

(a)(3) Exhibits

See Exhibit Index, which is incorporated herein by reference.

EXHIBIT INDEX

The exhibits listed in the Exhibit Index are required by Item 601 of Regulation S-K. The SEC file number for all items incorporated by reference herein from reports on Forms 10-K, 10-Q, and 8-K is 001-36483.

Incorporated by Reference

Exhibit No. Description of Exhibit Form Filing Date Number

95

96

10.40+ Amendment to Seth Harmon Employment Agreement, dated February 25, 2025. x

19 Insider Trading Policy. x

21.1 Subsidiaries of the Registrant. x

23.1 Consent of Independent Registered Public Accounting Firm. x

24.1 Power of Attorney (included on signature page hereto). x

101.INS XBRL Instance Document x

101.SCH XBRL Taxonomy Extension Schema Document x

101.CAL XBRL Taxonomy Extension Calculation Linkbase Document x

101.DEF XBRL Taxonomy Extension Definition Linkbase Document x

101.LAB XBRL Taxonomy Extension Label Linkbase Document x

101.PRE XBRL Taxonomy Extension Presentation Linkbase Document x

+ Indicates management contract or compensatory plan.

x Filed/furnished herewith.

ITEM 16. FORM 10-K SUMMARY

None.

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VIRIDIAN THERAPEUTICS, INC.

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

Consolidated Balance Sheets 4

Consolidated Statements of Operations and Comprehensive Loss 5

Consolidated Statements of Changes in Stockholders’ Equity 6

Consolidated Statements of Cash Flows 8

Notes to Consolidated Financial Statements 10

F-1

Report of Independent Registered Public Accounting Firm

To the Stockholders and Board of Directors

Viridian Therapeutics, Inc.:

Opinions on the Consolidated Financial Statements and Internal Control Over Financial Reporting

We have audited the accompanying consolidated balance sheets of Viridian Therapeutics, Inc. and subsidiaries (the Company) as of December 31, 2024 and 2023, the related consolidated statements of operations and comprehensive loss, changes in stockholders’ equity, and cash flows for each of the years in the three-year period ended December 31, 2024, and the related notes (collectively, the consolidated financial statements).

We also have audited the Company’s internal control over financial reporting as of December 31, 2024, based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of the Company as of December 31, 2024 and 2023, and the results of its operations and its cash flows for each of the years in the three-year period ended December 31, 2024, in conformity with U.S. generally accepted accounting principles. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2024 based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.

Basis for Opinion

The Company’s management is responsible for these consolidated financial statements, for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management's Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Company’s consolidated financial statements and an opinion on the Company’s internal control over financial reporting based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud, and whether effective internal control over financial reporting was maintained in all material respects.

Our audits of the consolidated financial statements included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

Definition and Limitations of Internal Control Over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made

F-2

only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current period audit of the consolidated financial statements that was communicated or required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material to the consolidated financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of a critical audit matter does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Accrued outsourced clinical trials and nonclinical studies

As discussed in Notes 2 and 5 to the consolidated financial statements, accrued expenses for clinical trials and nonclinical studies are based on estimates of costs incurred for services provided by clinical research organizations, manufacturing organizations, and other providers. In accruing for these activities, the Company obtains information from various sources and estimates the level of effort or expense allocated to each period. The estimates consider a number of factors such as site initiation, patient screening, enrollment, delivery of reports, and other events. Accrued liabilities for outsourced clinical trials and nonclinical studies were $30.9 million as of December 31, 2024.

The following are the primary procedures we performed to address this critical audit matter. We evaluated the design and tested the operating effectiveness of certain internal controls related to accrued outsourced clinical trials and nonclinical studies. This included controls related to the estimation of costs incurred for services provided by clinical research organizations, manufacturing organizations, and other providers during the period that are included in accrued liabilities and other at the end of each reporting period. For a sample of accrued liabilities for outsourced clinical trials and nonclinical studies, we compared the relevant factors used by management to estimate the accrued expenses to contracts, invoices and third-party confirmations of contractual milestones and project status. We compared the Company’s estimate of costs accrued as of year-end to a selection of third-party invoices received after year-end, but prior to the issuance of the Company’s financial statements. We assessed the sufficiency of audit evidence obtained related to accrued outsourced clinical trials and nonclinical studies by assessing the cumulative results of the audit procedures.

/s/ KPMG LLP

We have served as the Company’s auditor since 2009.

Boston, Massachusetts

March 3, 2025

F-3

VIRIDIAN THERAPEUTICS, INC.

CONSOLIDATED BALANCE SHEETS

(in thousands, except share and per share data)

December 31,

Assets

Current assets:

Unbilled revenue - related party — 102

Operating lease right-of-use asset 2,205 1,670

Liabilities and Stockholders’ Equity

Current liabilities:

Current portion of deferred revenue - related party 288 288

Deferred revenue - related party 284 573

Commitments and contingencies

Stockholders’ equity:

Accumulated other comprehensive income (loss) (10) 338

Total liabilities and stockholders’ equity $ 742,403 $ 490,424

See accompanying notes to these consolidated financial statements.

F-4

VIRIDIAN THERAPEUTICS, INC.

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS

(in thousands, except share and per share data)

Year EndedDecember 31,

Revenue:

Collaboration revenue - related party $ 302 $ 314 $ 1,772

Operating expenses:

Other income (expense):

Net loss per share, basic and diluted, common stock $ (3.07) $ (3.91) $ (2.71)

Comprehensive loss:

Other comprehensive (loss) income:

Change in unrealized (loss) gain on investments (348) 728 (233)

Total other comprehensive (loss) income (348) 728 (233)

See accompanying notes to these consolidated financial statements.

F-5

VIRIDIAN THERAPEUTICS, INC.

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY

(in thousands, except share data)

Series A Convertible Preferred Stock Series B Convertible Preferred Stock

Shares Amount Shares Amount Shares Amount

Issuance of common stock upon exercises of warrants — — — — 56,666 1 934 — — 935

Share-based compensation expense — — — — — — 19,765 — — 19,765

Change in unrealized loss on investments — — — — — — — (233) — (233)

Vesting of restricted stock units — — — — 135,416 1 (1) — — —

Share-based compensation expense — — — — — — 67,172 — — 67,172

Change in unrealized gain on investments — — — — — — — 728 — 728

F-6

Series A Convertible Preferred Stock Series B Convertible Preferred Stock

Shares Amount Shares Amount Shares Amount

Vesting of restricted stock units — — — — 129,395 1 (1) — — —

Share-based compensation expense — — — — — — 42,150 — — 42,150

Change in unrealized gain/loss on investments — — — — — — — (348) — (348)

See accompanying notes to these consolidated financial statements.

F-7

VIRIDIAN THERAPEUTICS, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

Year EndedDecember 31,

Cash flows from operating activities:

Adjustments to reconcile net loss to net cash used in operating activities:

Issuance of common stock under license agreement — 5,693 —

Non-cash interest expense and amortization of debt issuance costs 377 317 228

Net loss on extinguishment of debt — 181 —

Fees paid directly to creditor related to extinguishment of debt — 514 —

Loss on sale of equipment 449 1 —

Other non cash items — 31 —

Changes in operating assets and liabilities:

Cash flows from investing activities:

Purchases of property and equipment (511) (898) (797)

Cash flows from financing activities:

Proceeds from the exercise of warrants — 1,881 935

Proceeds from issuance of long-term debt — 15,000 5,000

Payment of debt extinguishment costs — (514) —

Payment of debt issuance costs — — (446)

Net increase (decrease) in cash and cash equivalents (3,233) (52,752) 113,280

F-8

Supplemental disclosure of cash flow information

Supplemental disclosure of non-cash investing and financing activities

Extinguishment of long-term debt $ — $ 4,707 $ —

Issuance of long-term debt $ — $ 5,000 $ —

Amortization of public offering costs $ — $ — $ 75

See accompanying notes to these consolidated financial statements.

F-9

VIRIDIAN THERAPEUTICS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. DESCRIPTION OF BUSINESS

Viridian Therapeutics, Inc., a Delaware corporation (the “Company” or “Viridian”), is a biopharmaceutical company focused on discovering, developing and commercializing potential best-in-class medicines for serious and rare diseases. The Company’s most advanced program, veligrotug (formerly known as VRDN-001), is a differentiated monoclonal antibody targeting insulin-like growth factor-1 receptor (“IGF-1R”), a clinically and commercially validated target for the treatment of thyroid eye disease (“TED”). The Company’s second product candidate, VRDN-003, is an extended half-life monoclonal antibody with the same binding domains as veligrotug designed for administration as convenient, low-volume, subcutaneous pen injections. TED is a serious and debilitating rare autoimmune disease that causes inflammation within the orbit of the eye that can cause bulging of the eyes, redness and swelling, double vision, pain, and potential blindness.

In addition to developing therapies for TED, the Company is also developing a portfolio of engineered anti-neonatal Fc receptor (“FcRn”) inhibitors, including VRDN-006 and VRDN-008. FcRn inhibitors have the potential to treat a broad array of autoimmune diseases, representing a significant commercial market opportunity.

Liquidity

The accompanying consolidated financial statements have been prepared on a basis that assumes the Company is a going concern and do not include any adjustments to reflect the possible future effects on the recoverability and classification of assets or the amounts and classifications of liabilities that may result from any uncertainty related to its ability to continue as a going concern. The Company has funded its operations to date principally through proceeds received from the sale of the Company’s common stock, its Series A Convertible Preferred Stock, Series B Convertible Preferred Stock, and other equity securities, debt financings, license fees, and reimbursements received under collaboration agreements. Since its inception and through December 31, 2024, the Company has generated an accumulated deficit of $995.9 million. The Company expects to continue to generate operating losses for the foreseeable future.

The Company has no products approved for commercial sale, has not generated any revenue from product sales, and cannot guarantee when or if it will generate any revenue from product sales. Substantially all of the Company’s operating losses resulted from expenses incurred in connection with its research and development programs and from general and administrative costs associated with its operations. The Company expects to incur significant expenses and operating losses for at least the next several years as it continues the development of, and seeks regulatory approval for, its product candidates. It is expected that operating losses will fluctuate significantly from quarter to quarter and year to year due to timing of development programs and efforts to achieve regulatory approval.

As of December 31, 2024, the Company had approximately $717.6 million in cash, cash equivalents, and short-term investments. In addition, the Company also has access to additional undrawn funds under the Hercules Loan and Security Agreement Amended Term Loan, as further described in Note 6. Debt. As of the issuance date of these consolidated financial statements, the Company expects that its current resources will be sufficient to fund its operating expenses and capital expenditure requirements for at least the next twelve months from the issuance date of these financial statements.

The Company will require additional capital in order to continue to finance its operations. The amount and timing of future funding requirements will depend on many factors, including the pace and results of the Company’s clinical development efforts, timing of market research and other professional and consulting activities to prepare for commercial activities, equity financings, entering into license and collaboration agreements, and issuing debt or other financing vehicles. The Company’s ability to secure additional capital is dependent upon a number of factors, some of which are outside of the Company’s control, including success in developing its product candidates, operational performance, and market conditions, including those resulting from the current inflationary and broader macroeconomic environment.

Failure to raise capital as and when needed, on favorable terms or at all, would have a negative impact on the Company’s financial condition and its ability to develop its product candidates. Changing circumstances may cause the Company to consume capital significantly faster or slower than currently anticipated. If the Company is unable to acquire additional capital or resources, it will be required to modify its operational plans. The estimates included herein are based on assumptions that may prove to be wrong, and the Company could exhaust its available financial resources sooner than currently anticipated.

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2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

The accompanying consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries, Viridian Therapeutics Europe Limited and Viridian Therapeutics S.à.r.l., both of which were formed for the sole purpose of submitting regulatory filings in Europe, and Viridian Securities Corporation, which was formed in July 2021. The Company’s subsidiaries have no employees or operations.

The consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) and include all adjustments necessary for the fair presentation of the Company’s financial position, results of operations, and cash flows for the periods presented. All significant intercompany balances have been eliminated in consolidation. The Company’s management performed an evaluation of its activities through the date of filing of these consolidated financial statements and concluded that there are no subsequent events requiring disclosure, other than as disclosed.

Risks and Uncertainties - Global Economic and Political Considerations

The global macroeconomic environment is uncertain, and could be negatively affected by, among other things, increased U.S. trade tariffs and trade disputes with other countries, instability in the global capital and credit markets, supply chain weaknesses, and instability in the geopolitical environment, including as a result of the Russian invasion of Ukraine, the rising tensions between China and Taiwan, the conflict in Israel and surrounding area and other political tensions. Such challenges have caused, and may continue to cause, recession fears, concerns regarding potential sanctions, high interest rates, foreign exchange volatility and inflationary pressures. At this time, the Company is unable to quantify the potential effects of this economic instability on its future operations.

Going Concern

At each reporting period, the Company evaluates whether there are conditions or events that raise substantial doubt about the Company’s ability to continue as a going concern within one year after the date that the financial statements are issued. The Company is required to make certain additional disclosures if it concludes substantial doubt exists and it is not alleviated by the Company’s plans or when its plans alleviate substantial doubt about the Company’s ability to continue as a going concern.

The Company’s evaluation entails, among other things, analyzing the results of the Company’s clinical development efforts, license and collaboration agreements as well as the entity’s current financial condition including conditional and unconditional obligations anticipated within a year, and related liquidity sources at the date the financial statements are issued. This is reflected in the Company’s prospective operating budgets and forecasts and compared to the current cash, cash equivalents and short-term investments balance.

Use of Estimates

The Company’s consolidated financial statements are prepared in accordance with U.S. GAAP, which requires it to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and contingent liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Significant estimates and assumptions reflected in these consolidated financial statements include, but are not limited to, the accrual for clinical trial costs, including manufacturing activities, and other outsourced research and development expenses, and the valuation of share-based awards. Although these estimates are based on the Company’s knowledge of current events and actions it may take in the future, actual results may ultimately differ from these estimates and assumptions.

Revenue Recognition

The Company accounts for revenue in accordance with ASC Topic 606, Revenue from Contracts with Customers (“ASC 606”).

The Company enters into collaboration agreements and certain other agreements that are within the scope of ASC 606, under which the Company licenses, may license, or grants an option to license rights to certain of the Company’s product candidates and performs research and development services in connection with such agreements. The terms of these agreements typically include payment of one or more of the following: non-refundable, up-front fees; reimbursement of research and development costs; developmental, clinical, regulatory, and commercial sales milestone payments; and royalties on net sales of licensed products.

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In accordance with ASC 606, the Company recognizes revenue when its customer obtains control of promised goods or services, in an amount that reflects the consideration which the Company expects to receive in exchange for those goods or services.

To determine the appropriate amount of revenue to be recognized, for agreements within the scope of ASC 606, the Company performs the following five steps: (i) identification of the goods or services within the contract; (ii) determination of whether the promised goods or services are performance obligations, including whether they are distinct within the terms of the contract; (iii) measurement of the transaction price, including the constraint on variable consideration; (iv) allocation of the transaction price to the identified performance obligations; and (v) recognition of revenue when (or as) the Company satisfies each performance obligation. The Company only applies the five-step model to contracts when it is probable that the Company will collect consideration it is entitled to in exchange for the goods or services it transfers to the customer.

The promised goods or services in the Company’s agreements typically consist of a license, or option to license, rights to the Company’s intellectual property or research and development services. Performance obligations are promises in a contract to transfer a distinct good or service to the customer and are considered distinct when (i) the customer can benefit from the good or service on its own or together with other readily available resources and (ii) the promised good or service is separately identifiable from other promises in the contract. In assessing whether promised goods or services are distinct, the Company considers factors such as the stage of development of the underlying intellectual property, the capabilities of the customer to develop the intellectual property on its own or whether the required expertise is readily available, and whether the goods or services are integral or dependent to other goods or services in the contract.

The Company estimates the transaction price based on the amount expected to be received for transferring the promised goods or services in the contract. The consideration may include fixed consideration or variable consideration. At the inception of each agreement that includes variable consideration, the Company evaluates the amount of potential payment and the likelihood that the payments will be received. The Company utilizes either the most likely amount method or expected value method to estimate the amount expected to be received based on which method best predicts the amount expected to be received. The amount of variable consideration that is included in the transaction price may be constrained and is included in the transaction price only to the extent that it is probable that a significant reversal in the amount of the cumulative revenue recognized will not occur in a future period.

The Company’s contracts often include development and regulatory milestone payments that are assessed under the most likely amount method and constrained if it is probable that a significant revenue reversal would occur. Milestone payments that are not within the Company’s control or the licensee’s control, such as regulatory approvals, are not considered probable of being achieved until those approvals are received. At the end of each reporting period, the Company re-evaluates the probability of achievement of such development and clinical milestones and any related constraint, and if necessary, adjusts its estimate of the overall transaction price. Any such adjustments are recorded on a cumulative catch-up basis, which would affect collaboration and other research and development revenue in the period of adjustment.

For agreements that include sales-based royalties, including milestone payments based on the level of sales, and where the license is deemed to be the predominant item to which the royalties relate, the Company recognizes revenue at the later of (i) when the related sales occur, or (ii) when the performance obligation to which some or all of the royalty has been allocated has been satisfied (or partially satisfied). To date, the Company has not recognized any royalty revenue resulting from any of the Company’s collaboration or strategic alliance agreements.

The Company allocates the transaction price based on the estimated standalone selling price. The Company must develop assumptions that require judgment to determine the stand-alone selling price for each performance obligation identified in the contract. The Company utilizes key assumptions to determine the stand-alone selling price, which may include other comparable transactions, pricing considered in negotiating the transaction, and the estimated costs. Variable consideration is allocated specifically to one or more performance obligations in a contract when the terms of the variable consideration relate to the satisfaction of the performance obligation and the resulting amounts allocated are consistent with the amounts the Company would expect to receive for the satisfaction of each performance obligation.

The consideration allocated to each performance obligation is recognized as revenue when control is transferred for the related goods or services. For performance obligations which consist of licenses and other promises, the Company utilizes judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress. The Company evaluates the measure of progress each reporting period and, if necessary, adjusts the measure of performance and related revenue recognition.

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The Company receives payments from its customers based on billing schedules established in each contract. Up-front payments and fees are recorded as deferred revenue upon receipt or when due until the Company performs its obligations under these arrangements. Amounts are recorded as accounts receivable when the Company’s right to consideration is unconditional.

Research and Development

Research and development costs are expensed as incurred in performing research and development activities. The costs include employee-related expense including salaries, benefits, share-based compensation, restructuring charges including severance costs, fees for acquiring and maintaining licenses under third-party license agreements, consulting fees, costs of research and development activities conducted by third parties on the Company’s behalf, costs to have clinical trial materials manufactured on the Company’s behalf, purchases of laboratory supplies, depreciation, and facilities and overhead costs. The Company records research and development expense in the period in which the Company receives or takes ownership of the applicable goods or when the applicable services are performed. In circumstances where amounts have been paid in excess of costs incurred, the Company records a prepaid expense.

The Company records up-front and milestone payments to acquire and retain contractual rights to licensed technology as research and development expenses when incurred if there is uncertainty in the Company receiving future economic benefit from the acquired contractual rights. The Company considers future economic benefits from acquired contractual rights to licensed technology to be uncertain until such a drug candidate is approved for sale by the U.S. Food and Drug Administration (“FDA”) or when other significant risk factors are abated. Such up-front and milestone payments are reflected as cash used in operating activities within the consolidated statement of cash flows.

Clinical Trial and Nonclinical Study Accruals

The Company makes estimates of accrued expenses as of each balance sheet date in its consolidated financial statements based on certain facts and circumstances at that time. The Company’s accrued expenses for clinical trials and nonclinical studies are based on estimates of costs incurred for services provided by clinical research organizations, manufacturing organizations, and other providers. Payments under the Company’s agreements with external service providers depend on a number of factors, such as site initiation, patient screening, enrollment, delivery of reports, and other events. In accruing for these activities, the Company obtains information from various sources and estimates the level of effort or expense allocated to each period. Adjustments to the Company’s research and development expenses may be necessary in future periods as its estimates change.

Share-Based Compensation

The Company issues stock-based awards to employees and non-employees in the form of stock options and restricted stock units (“RSUs”). The Company measures and recognizes share-based compensation expense for its stock-based awards granted to employees and non-employees based on the estimated grant date fair value in accordance with ASC Topic 718, Compensation - Stock Compensation and determines the fair value of RSUs based on the fair value of its common stock. The Company uses the Black-Scholes option pricing model to determine the fair value of stock options. The use of the Black-Scholes option-pricing model requires the Company to make assumptions with respect to the expected term of the option, the expected volatility of the common stock consistent with the expected life of the option, risk-free interest rates and expected dividend yields of the common stock. The Company recognizes share-based compensation expense for awards with service-based conditions using the straight-line method over the requisite service period, net of any actual forfeitures.

Cash and Cash Equivalents

All highly-liquid investments that have maturities of 90 days or less at the date of purchase are classified as cash equivalents. Cash equivalents are reported at cost, which approximates fair value due to the short maturities of these instruments.

Investments

The Company’s investments consist of highly-rated corporate and U.S. Treasury securities and have been classified as available-for-sale securities. Accordingly, these investments are recorded at their respective fair values, as determined based on quoted market prices. The Company may hold securities with stated maturities greater than one year. All available-for-sale securities are considered available to support current operations, and thus investments with maturities beyond one year are generally classified as current assets.

Unrealized gains and losses are reported as a component of stockholders’ equity until their disposition. Realized gains and losses are included as a component of other income (expense), net based on the specific identification method. The securities

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are subject to a periodic impairment review. An impairment charge would occur when a decline in the fair value of the investments below the cost basis is judged to be other-than-temporary.

Fair Value Measurements

Certain assets and liabilities are carried at fair value under U.S. GAAP. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. Financial assets and liabilities carried at fair value are to be classified and disclosed in one of the following three levels of the fair value hierarchy, of which the first two are considered observable and the last is considered unobservable:

•Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities.

•Level 2 inputs utilize observable inputs other than Level 1 prices, such as quoted prices, for similar assets or liabilities, quoted market prices in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the related assets or liabilities.

•Level 3 inputs are unobservable data points for the asset or liability and include situations where there is little, if any, market activity for the asset or liability.

Certain of the Company’s financial instruments are not measured at fair value on a recurring basis but are recorded at amounts that approximate their fair value due to the short-term nature of their maturities, such as cash and cash equivalents, accounts receivable, accounts payable and accrued expenses.

Concentrations of Credit Risk

Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash equivalents, which include short-term investments that have maturities of less than three months. The Company maintains deposits in federally insured financial institutions in excess of federally insured limits. The Company has not experienced any losses in such accounts. The Company invests its excess cash primarily in deposits and money market funds held with one financial institution. The Company does not believe that it is subject to unusual credit risk beyond the normal credit risk associated with commercial banking relationships.

Property and Equipment

The Company carries its property and equipment at cost, less accumulated depreciation and amortization. Depreciation is computed using the straight-line method over the estimated useful lives of the assets, generally three to five years. Leasehold improvements are amortized over the shorter of the life of the lease (including any renewal periods that are deemed to be reasonably assured) or the estimated useful life of the assets. Construction in progress is not depreciated until placed in service. Repairs and maintenance costs are expensed as incurred and expenditures for major improvements are capitalized.

Operating Lease Right-of-Use Assets and Liabilities

The Company determines if an arrangement is, or contains, a lease at contract inception and during modifications or renewal of existing leases. Operating lease assets represent the Company’s right to use an underlying asset for the lease term and operating lease liabilities represent the Company’s obligation to make lease payments arising from the lease. The Company has recorded operating lease assets and liabilities pursuant to the guidance in Accounting Standards Update (“ASU”) No. 2016-02, Leases (Topic842), and subsequent amendments to the initial guidance: ASU No. 2017-13, ASU No. 2018-10, and ASU No. 2018-11 (collectively, “ASC 842”). These operating lease assets and liabilities are recognized at the commencement date of the lease based upon the present value of lease payments over the lease term. The Company includes the initial lease term in its assessment of a lease arrangement; options to extend a lease are not included in the assessment unless there is reasonable certainty that the Company will exercise the option to extend. The lease payments used to determine the Company’s operating lease assets may include lease incentives, stated rent increases, and escalation clauses and are recognized in the Company’s operating lease assets in the Company’s consolidated balance sheets. The Company’s operating leases are reflected in operating lease right-of-use asset and operating lease liability within accrued and other liabilities in the Company’s consolidated balance sheets. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term. Short-term leases, defined as leases that have a lease term of 12 months or less at the commencement date, are excluded from this treatment and are recognized on a straight-line basis over the term of the lease. Refer to Note 8. Commitments and Contingencies - Lease Obligations for additional information related to the Company’s operating leases.

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Debt and Debt Issuance Costs

Debt issuance costs and expenses paid by the Company to its lenders are presented on the consolidated balance sheet as a direct deduction from the related debt liability rather than capitalized as an asset in accordance with ASU No. 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs. Debt issuance costs represent legal and other direct costs incurred in connection with the Company’s Term Loan (as defined in Note 6. Debt). These costs are amortized as a non-cash component of interest expense using the effective interest method over the term of the loan.

Convertible Preferred Stock

The Company records shares of non-voting convertible preferred stock at their respective fair values on the dates of issuance, net of issuance costs.

Impairment of Long-Lived Assets

The Company assesses the carrying amount of its property and equipment whenever events or changes in circumstances indicate the carrying amount of such assets may not be recoverable.No impairment charges were recorded during the years ended December 31, 2024, 2023 and 2022.

Net Loss per Share

The Company computes net loss per share of common stock, Series A Convertible Preferred Stock, and Series B Convertible Preferred Stock using the two-class method required for multiple classes of common stock and other participating securities. The Company has determined that the Series A Convertible Preferred Stock and Series B Convertible Preferred Stock do not have preferential rights over the Company’s common stock and, accordingly, are considered to be a second and third class of common stock for purposes of calculating net loss per share. Basic net loss per share is calculated by dividing the allocated net loss to each share class by the weighted average number of shares outstanding during the period. Since the Company was in a loss position for all periods presented, diluted net loss per share is the same as basic net loss per share for all periods, as the inclusion of all potential common shares outstanding is antidilutive.

Comprehensive Loss

Comprehensive loss is comprised of net loss and adjustments for the change in unrealized gains and losses on investments. Unrealized accumulated comprehensive gains or losses are reflected as a separate component in the consolidated statements of changes in stockholders’ equity. The Company had an unrealized loss of $0.3 million, an unrealized gain of $0.7 million and an unrealized loss of $0.2 million during the years ended December 31, 2024, 2023 and 2022, respectively.

Income Taxes

The Company accounts for income taxes by using an asset and liability method of accounting for deferred income taxes. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. A valuation allowance is recorded to the extent it is more likely than not that a deferred tax asset will not be realized. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in operations in the period that includes the enactment date.

The Company’s significant deferred tax assets are for net operating loss carryforwards, tax credits, accruals and reserves, and capitalized start-up costs. The Company has provided a valuation allowance for its entire net deferred tax assets since inception as, due to its history of operating losses, the Company has concluded that it is more likely than not that its deferred tax assets will not be realized.

The Company has no unrecognized tax benefits. The Company classifies interest and penalties arising from the underpayment of income taxes in the consolidated statements of operations and comprehensive loss as general and administrative expenses.No such expenses have been recognized during the years ended December 31, 2024, 2023 and 2022.

Warrants

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Upon the issuance of warrants to purchase shares of common stock, the Company evaluates the terms of the warrant issue to determine the appropriate accounting and classification of the warrant issue pursuant to FASB ASC Topic 480, Distinguishing Liabilities from Equity, FASB ASC Topic 505, Equity, FASB ASC 815, Derivatives and Hedging, and ASC 718, Compensation - Stock Compensation, and classifies warrants for common stock as liabilities or equity. Warrants are classified as liabilities when the Company may be required to settle a warrant exercise in cash and classified as equity when the Company settles a warrant exercise in shares of its common stock.

Segment Information

The Company manages its operations as a single segment, focused on discovering, developing and commercializing potential best-in-class medicines for serious and rare diseases. The Company’s Chief Operating Decision Maker (“CODM”) is its Chief Executive Officer. The CODM reviews and evaluates consolidated net loss for purposes of assessing performance, making operating decisions, allocating resources, and planning and forecasting for future periods.

Recently Adopted Accounting Pronouncements

In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Report Segment Disclosures (“ASU 2023-07”). ASU 2023-07 requires enhanced disclosures about significant segment expenses, enhanced interim disclosure requirements, clarifies circumstances in which an entity can disclose multiple segment measures of profit or loss, provides new segment disclosure requirements for entities with a single reportable segment, and contains other disclosure requirements. ASU 2023-07 is effective for the Company’s annual reporting period beginning after December 15, 2023, and subsequent interim periods, with early adoption permitted. ASU 2023-07 requires retrospective application to all prior periods presented in the financial statements. The Company adopted ASU 2023-07 effective December 31, 2024 and adoption of this ASU did not materially impact the Company’s consolidated financial statements. See Note 15, Segment Information, for disclosures related to the adoption of ASU 2023-07.

Recent Accounting Pronouncements – To Be Adopted

From time to time, new accounting pronouncements are issued by the FASB or other standard setting bodies that the Company adopts as of the specified effective date. The Company does not believe that the adoption of recently issued standards have or may have a material impact on the Company’s consolidated financial statements or disclosures.

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures (“ASU 2023-09”). ASU 2023-09 requires a company's annual financial statements to include consistent categories and greater disaggregation of information in the rate reconciliation, and income taxes paid disaggregated by jurisdiction. ASU 2023-09 is effective for the Company’s annual reporting periods beginning after December 15, 2024. Adoption is either with a prospective method or a fully retrospective method of transition. Early adoption is permitted. The Company is currently evaluating the effect that adoption of ASU 2023-09 will have on its consolidated financial statements.

In November 2024, the FASB issued ASU-2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses ("ASU 2024-03"). ASU 2024-03 requires additional disclosures of the nature of the expenses included in the income statement, including disaggregation of the expense captions presented on the face of the income statement into specific categories. ASU 2024-03 is effective for the Company's annual reporting periods beginning after December 15, 2026, and for interim periods beginning after December 15, 2027, with early adoption permitted. The requirements will be applied prospectively with the option for retrospective application. The Company is currently evaluating the effect that adoption of ASU 2024-03 will have on its consolidated financial statements.

3. INVESTMENTS AND FAIR VALUE MEASUREMENTS

Investments

The Company’s investments consisted of the following as of December 31, 2024 and 2023:

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International corporate bond holdings 4,995 — — 4,995

International corporate bond holdings 9,304 24 — 9,328

The money market funds above are included in cash and cash equivalents on the Company’s consolidated balance sheets.

The Company considers the unrealized losses in its investment portfolio to be temporary in nature and not due to credit losses. The Company has the intent and ability to hold such investments until their recovery at fair value. The Company had no realized gains in its available for sale securities for the years ended December 31, 2024, 2023, or 2022. The contractual maturity dates of the Company’s investments are all less than 24 months.

Fair Value Measurements

The following tables summarize the Company’s assets and liabilities that are measured at fair value on a recurring basis:

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Assets:

Cash equivalents:

Short-term investments:

International corporate bond holdings — 4,995 — 4,995

Assets:

Cash equivalents:

Short-term investments:

International corporate bond holdings — 9,328 — 9,328

4. PROPERTY AND EQUIPMENT

Property and equipment, net, consisted of the following:

December 31,

(in thousands)

Computer hardware and software 560 489

Property and equipment, gross 2,502 2,721

Less: accumulated depreciation and amortization (1,266) (1,049)

Property and equipment, net $ 1,236 $ 1,672

During the years ended December 31, 2024, 2023, and 2022, depreciation and amortization expense was $0.5 million, $0.5 million and $0.3 million, respectively.

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5. ACCRUED LIABILITIES

Accrued liabilities consisted of the following:

December 31,

(in thousands)

Accrued outsourced clinical trials and nonclinical studies $ 30,955 $ 10,724

Accrued employee compensation and related taxes 10,638 10,513

Operating lease liability, short-term 513 843

Accrued legal fees and expenses 1,245 399

Accrued other professional service fees 1,078 473

Value of liability-classified stock purchase warrants 100 100

Accrued interest payable 154 154

Other accrued liabilities 760 902

6. DEBT

Loan and Security Agreement with Hercules Capital, Inc.

In April 2022, the Company entered into a loan and security agreement (the “Hercules Loan and Security Agreement”) among the Company, certain of its subsidiaries from time to time party thereto (together with the Company, collectively, the “Borrower”), Hercules Capital, Inc. (“Hercules”) and certain other lenders named therein (the “Lenders”). Under the Hercules Loan and Security Agreement, the Lenders provided the Company with access to a term loan with an aggregate principal amount of up to $75.0 million, in four tranches (collectively the “Term Loan”), including an initial tranche of $25.0 million, available to the Company through June 15, 2023. Upon signing the Hercules Loan and Security Agreement, the Company drew an initial principal amount of $5.0 million (the “initial draw”). The Company incurred debt issuance costs of $0.2 million in connection with the Term Loan and paid to the Lenders a facility fee of $0.1 million, as well as $0.1 million of other expenses incurred by the Lenders and reimbursed by the Company (“Lender Expenses”) in connection with the initial draw. The debt issuance costs and the Lender Expenses were being amortized as additional interest expense over the term of the loan.

The Company was originally obligated to make interest-only payments through April 1, 2024, which was extended to October 1, 2024 upon achievement of a development milestone in August 2022. In addition, the Borrower was required to pay an end-of-term fee equal to 6% of the principal amount of funded Term Loan advances at maturity, which were being accreted as additional interest expense over the term of the loan. The obligations of the Borrower under the Hercules Loan and Security Agreement were secured by substantially all of the assets of the Borrower, excluding the Borrower’s intellectual property. The Term Loan had a maturity date of October 1, 2026.

In August 2023, the Company executed an amendment to the Hercules Loan and Security Agreement (the “Hercules Amendment”) to modify certain terms of the agreement and increase the aggregate principal amount of up to $150.0 million. Upon execution of the Hercules Amendment, the Company drew a principal amount of $15.0 million. The Hercules Amendment was determined to substantially alter the Hercules Loan and Security Agreement and therefore was accounted for as a debt extinguishment. The Company recognized a loss on debt extinguishment of $0.2 million in August 2023 related to unamortized debt discount and debt issuance costs.

Under the Hercules Amendment, the Lenders provided the Company access to an increased term loan with an aggregate principal amount of up to $150.0 million, in four tranches (collectively the “Amended Term Loan”), consisting of (1) an initial tranche of $50.0 million, $5.0 million of which was drawn at closing of the Hercules Loan and Security Agreement in April 2022, $15.0 million of which was drawn at closing of the Hercules Amendment in August 2023, $5.0 million of which was available through December 15, 2023, and $25.0 million of which was available from July 1, 2024 through December 15, 2024; (2) a second tranche of $20.0 million, subject to achievement of certain regulatory milestones, available through February 15, 2025; (3) a third tranche of $20.0 million, subject to achievement of certain regulatory milestones, available through March 31, 2025; and (4) a fourth tranche of $60.0 million subject to approval by the Lenders’ investment committee(s), available through June 15, 2025. As of December 31, 2024, the milestones for the second and third tranches have been achieved. The obligations

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of the Borrower under the Hercules Amendment agreement are secured by substantially all of the assets of the Borrower, excluding the Borrower’s intellectual property. The Amended Term Loan has a maturity date of October 1, 2026.

The Amended Term Loan bears interest at a floating per annum rate equal to the greater of (i) 7.45% and (ii) 4.2% above the Prime Rate (as defined therein), provided that the Term Loan interest rate shall not exceed a per annum rate of 8.95%. Interest is payable monthly in arrears on the first day of each month. The interest rate as of December 31, 2024 was 8.95%.

Per the terms of the Hercules Amendment, the Company was originally obligated to make interest-only payments through April 1, 2025. Upon achievement of certain development milestones related to topline results for the Company’s phase 3 THRIVE trial in September 2024, the interest-only period was extended to October 1, 2025. Upon achievement of additional development milestones related to topline results for the Company’s phase 3 THRIVE-2 trial in December 2024, the interest-only period was further extended to April 1, 2026. The Borrower is required to repay the Amended Term Loan amount in equal monthly installments of the principal amount and interest between the end of the interest-only period and the maturity date of October 1, 2026. In addition, the Borrower is required to pay an end-of-term fee equal to 6% of the principal amount of funded Amended Term Loan advances at maturity, which are being accreted as additional interest expense over the term of the loan.

The total cost of all items (cash interest, the amortization/accretion of the debt issuance costs and the end-of-term fee) is being recognized as interest expense using an effective interest rate of approximately 9.3%. The Company recorded interest expense of $2.2 million, $1.3 million and $0.5 million during the years ended December 31, 2024, 2023, and 2022, respectively.

The following table summarizes the impact of the Term Loan, on the Company’s consolidated balance sheet at December 31, 2024 and 2023:

December 31,

(in thousands)

Accrued end-of-term fee 582 205

The carrying value of the Amended Term Loan approximates its fair value. Future principal payments, which exclude the end-of-term fee, in connection with the Hercules Loan and Security Agreement as of December 31, 2024 are as follows (in thousands):

Fiscal Year

7. COLLABORATION AGREEMENTS

License Agreement with Zenas BioPharma

In October 2020, the Company became party to a license agreement with Zenas BioPharma (Cayman) Limited (now Zenas BioPharma, Inc., their successor in interest, “Zenas BioPharma”) to license technology comprising certain materials, patent rights, and know-how to Zenas BioPharma. Since February 2021, the Company has entered into several letter agreements with Zenas BioPharma pursuant to which the Company agreed to provide assistance to Zenas BioPharma with certain development activities, including manufacturing. In May 2022, the Company entered into a Manufacturing Development and Supply Agreement with Zenas BioPharma to manufacture and supply, or to have manufactured and supplied, clinical drug product for developmental purposes. The license agreement and subsequent letter agreements and supply agreement (collectively, the “Zenas Agreements”) were negotiated with a single commercial objective and are treated as a combined contract for accounting purposes. Under the terms of the Zenas Agreements, the Company granted Zenas BioPharma an exclusive license to develop, manufacture, and commercialize certain IGF-1R directed antibody products for non-oncology indications in the greater area of China. In January 2025, Zenas BioPharma sublicensed their rights under the license agreement to Zai Lab (Hong Kong)

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Limited (“Zai Lab”) and assigned the Manufacturing Development and Supply Agreement to Zai Lab in connection with the sublicense transaction.

As consideration for the Zenas Agreements, the transaction price included upfront non-cash consideration and variable consideration in the form of payment for the Company’s goods and services and milestone payments due upon the achievement of specified events. Under the Zenas Agreements, the Company can receive non-refundable milestone payments upon achieving specific milestone events during the contract term. Additionally, the Company may receive royalty payments based on a percentage of the annual net sales of any licensed products sold on a country-by-country basis in the greater area of China. The royalty percentage may vary based on different tiers of annual net sales of the licensed products made. Zenas BioPharma is obligated to make royalty payments to the Company for the royalty term in the Zenas Agreements.

The Zenas Agreements would qualify as a collaborative arrangement under the scope of ASC, Topic 808, Collaborative Arrangements (“ASC 808”). While this arrangement is in the scope of ASC 808, the Company applied ASC 606 to account for certain aspects of this arrangement. The Company applied ASC 606 for certain activities within the arrangement associated with the Company’s transfer of a good or service (i.e., a unit of account) that is part of the Company’s ongoing major or central operations. The Company allocated the transaction price based on the relative estimated standalone selling prices of each performance obligation or, in the case of certain variable consideration, to one or more performance obligations. Research and development activities are priced generally at cost. The Company’s license of goods and services to Zenas BioPharma during the contract term was determined to be a single performance obligation satisfied over time. The Company will recognize the transaction price from the license agreement over the Company’s estimated period to complete its activities.

At the inception of the arrangement, the Company evaluated whether the milestones were considered probable of being reached and estimated the amount to be included in the transaction price using the most likely amount method. As it was not probable that a significant revenue reversal would not occur, none of the associated milestone payments were included in the transaction price at contract inception. For the sales-based royalties included in the arrangement, the license was deemed to be the predominant item to which the royalties relate. The Company will recognize royalty revenues at the later of (i) when the related sales occur, or (ii) when the performance obligation to which some or all of the royalty has been allocated has been satisfied (or partially satisfied). During the years ended December 31, 2024, 2023 and 2022, the Company recognized $0.3 million, $0.3 million and $1.8 million, respectively, of collaboration revenue related to the Zenas Agreements.

In January 2024, the Company entered into a letter agreement with Zenas BioPharma (the “Zenas Letter Agreement”) pursuant to which Zenas BioPharma agreed to support the Company’s THRIVE-2 and STRIVE trials by initiating and managing the studies in China. Under the Zenas Letter Agreement, the Company agreed to reimburse costs incurred by Zenas BioPharma, including a full-time equivalent rate for services rendered. In connection with the execution of the Zenas Letter Agreement, the Company made an initial payment of $1.5 million, which was recorded as research and development expense during the year ended December 31, 2024 as services were performed.

In January 2025, the Company entered into the third amendment to license agreement (the “Third Amendment”) to modify certain provisions of the Zenas Agreements, including provisions related to future milestones.

As of December 31, 2024 and 2023, the Zenas Agreements are considered related party transactions because Fairmount Funds Management LLC (“Fairmount”) beneficially owns more than 5% of the Company’s common stock and is also a 5% or greater stockholder of Zenas BioPharma and has a seat on Zenas BioPharma’s board of directors.

Antibody and Discovery Option Agreement with Paragon Therapeutics, Inc.

In January 2022, the Company and Paragon Therapeutics, Inc. (“Paragon”) entered into an antibody and discovery option agreement (the “Paragon Research Agreement”) under which the Company and Paragon will cooperate to develop one or more proteins or antibodies. Under the terms of the Paragon Research Agreement, Paragon will perform certain development activities in accordance with an agreed upon research plan, and the Company will pay Paragon agreed upon development fees in exchange for Paragon’s commitment of the necessary personnel and resources to perform these activities. The Paragon Research Agreement stipulates a final deliverable to the Company comprising of a report summarizing the experiments and processes performed under the research plan (the “Final Deliverable”).

Additionally, Paragon agreed to grant the Company an option for an exclusive license to all of Paragon’s right, title and interest in and to certain antibody technology and the Final Deliverable, and a non-exclusive license to certain background intellectual property owned by Paragon solely to research, develop, make, use, sell, offer for sale and import of the licensed intellectual property and resulting products worldwide (each, an “Option” and together, the “Options”). Paragon also granted to the Company a limited, exclusive, royalty-free license, without the right to sublicense, to certain antibody technology and the Final

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Deliverable, and a non-exclusive, royalty-free license without the right to sublicense, under certain background intellectual property owned by Paragon, solely to evaluate the antibody technology and Option and for the purpose of allowing the Company to determine whether to exercise the Option with respect to certain programs. The Company may, at its sole discretion, exercise the Option with respect to specified programs (“Programs”) at any time until the date that is 90 days after the Company’s receipt of the Final Deliverable the applicable program, or such longer period as agreed upon by the parties (“Option Period”) by delivering written notice of such exercise to Paragon. If the Company fails to exercise an Option prior to expiration of the applicable Option Period, such Option for such Programs will terminate. In consideration for Paragon’s grant of the Options to the Company, the Company paid to Paragon a non-refundable, non-creditable one-time fee of $2.5 million, which was recorded as research and development expense during the three months ended March 31, 2022. In December 2022, the Company and Paragon entered into a first amendment to the Paragon Research Agreement, under which the Company obtained an additional limited license for the purpose of conducting certain activities. In consideration for the rights and licenses obtained under the first amendment, Viridian paid Paragon a non-refundable fee of $2.3 million (the “First Amendment Payment”), which was recorded as research and development expense during the three months ended December 31, 2022. The non-refundable upfront fee and the First Amendment Payment are separate from any development costs or cost advance paid or owing with respect to the specified program.

In October 2023, the Company entered into a License Agreement with Paragon (the “Paragon License Agreement”) as a result of exercising its Option under the Paragon Research Agreement to obtain exclusive licenses to develop, manufacture and commercialize certain antibodies, proteins and associated products. In connection with the execution of the Paragon License Agreement, the Company made an initial payment of $5.3 million, which was recorded as research and development expense during the three months ended December 31, 2023. As further described below, the Paragon License Agreement was amended and restated by the Amended and Restated License Agreement with Paragon in September 2024.

In January 2024, the Company entered into a letter agreement with Paragon pursuant to which Paragon agreed to continue to perform development activities under the existing Paragon Research Agreement and Paragon License Agreement, which the Company renewed in July 2024. In consideration for the development activities to be conducted by Paragon, the Company will reimburse Paragon for actual development costs incurred and agreed upon development fees in exchange for Paragon’s commitment of the necessary personnel and resources to perform these activities. In September 2024, the Company entered into a second amendment to the Paragon Research Agreement to include additional development activities to be performed by Paragon. Under the amended Paragon Research Agreement, the Company will be obligated to make a one-time non-refundable payment of $3.5 million to Paragon following the achievement of certain research and development objectives. The Company achieved such objectives in February 2025 and the $3.5 million payment was recorded as research and development expense during the three months ended March 31, 2025.

In September 2024, the Company entered into the Amended and Restated License Agreement with Paragon (the “Amended Paragon License Agreement”) which amended and restated the Paragon License Agreement. In connection with the execution of the Amended Paragon License Agreement, the Company paid Paragon a non-refundable fee of $4.0 million in September 2024, which was recorded as research and development expense during the three months ended September 30, 2024. In consideration for rights granted by Paragon, the Company is obligated to make certain future milestone payments of up to $16.0 million on a program-by-program basis upon the achievement of specified clinical and regulatory milestones, with total milestone payments under all programs not to exceed $40.0 million. Additionally, if the Company develops a product utilizing certain intellectual property rights granted to it under the Amended Paragon License Agreement, the Company is obligated to pay Paragon potential additional future development milestone payments of up to $3.1 million and commercial milestone payments of up to $17.0 million with respect to such product. If the Company successfully commercializes any product candidate subject to the Amended Paragon License Agreement, it is responsible for royalty payments equal to a percentage in the mid-single digits of such product’s net sales. During the years ended December 31, 2024, 2023 and 2022, the Company recorded $14.2 million, $12.0 million and $5.6 million, respectively, in research and development costs related to the Paragon Research Agreement and Amended Paragon License Agreement (collectively, the “Paragon Agreements”).

As of December 31, 2024 and 2023, the Paragon Agreements are considered a related party transaction because Fairmount beneficially owns more than 5% of the Company’s capital stock and has two seats on the Company’s board of directors, and beneficially owns more than 5% of Paragon, which is a joint venture between Fairmount and FairJourney Biologics, and has appointed the sole director on Paragon’s board of directors and has the contractual right to approve the appointment of any executive officers.

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8. COMMITMENTS AND CONTINGENCIES

License Agreement with ImmunoGen, Inc.

In October 2020, the Company became party to a license agreement (the “ImmunoGen License Agreement”) with Immunogen, Inc. (“ImmunoGen”), under which the Company obtained an exclusive, sublicensable, worldwide license to certain patents and other intellectual property rights to develop, manufacture, and commercialize certain products for non-oncology and non-radiopharmaceutical indications. In consideration for rights granted by ImmunoGen, the Company is obligated to make certain future development milestone payments of up to $48.0 million upon the achievement of specified clinical and regulatory milestones. In December 2021, the Company paid a $2.5 million milestone payment to ImmunoGen upon the submission of an investigational new drug (“IND”) application for veligrotug with the FDA. In May 2022, the Company paid a $3.0 million milestone payment to ImmunoGen related to the first patient dosed in the clinical trial for veligrotug. In December 2022, the Company recorded $10.0 million as research and development expense related to a milestone owed to ImmunoGen related to the first patient dosed in a pivotal clinical trial for veligrotug, amount which was paid in January 2023. Additionally, if the Company successfully commercializes any product candidate subject to the ImmunoGen License Agreement, it is responsible for royalty payments equal to a percentage in the mid-single digits of net sales and commercial milestone payments of up to $95.0 million. The Company is obligated to make any such royalty payments on a product-by-product and country-by-country basis from the first commercial sale of a specified product in each country until the later of (i) the expiration of the last patent claim subject to the ImmunoGen License Agreement in such country, (ii) the expiration of any applicable regulatory exclusivity obtained for each product in such country, or (iii) the 12th anniversary of the date of the first commercial sale of such product in such country. On February 12, 2024, AbbVie Inc. acquired ImmunoGen. The terms of the ImmunoGen License Agreement did not change as a result of this acquisition.

Development and License Agreement with Enable Injections

In January 2023, the Company entered into a Development and License Agreement (the “Enable License Agreement”) with Enable Injections, Inc. (“Enable”), under which Enable granted the Company an exclusive, royalty-bearing, sublicensable, non-transferrable license to (i) develop, commercialize, seek marketing approval for and otherwise use and exploit certain products, and (ii) make and have made such product solely for such permitted uses. Pursuant to the terms of the Enable License Agreement, the Company granted Enable a non-exclusive, royalty-free, non-sublicensable, non-transferable license. In consideration for the rights granted by Enable the Company paid Enable an initial, non-creditable, non-refundable license fee of $15.0 million in January 2023. This amount is included in research and development expense for the year ended December 31, 2023 in the accompanying consolidated statement operations. This amount is reflected as a cash outflow from operating activities in the statement of cash flows during the year ended December 31, 2023.

The Company is obligated to make certain future milestone payments of up to $45.0 million upon the achievement of specified development, clinical and regulatory milestones. Additionally, if the Company is successful in commercializing any product candidate subject to the Enable License Agreement, the Company is obligated to make certain commercial milestone payments of up to $150.0 million and royalty payments equal to a percentage in the mid-single digits.

Contingent Value Rights Agreement

In accordance with the merger agreement with miRagen Therapeutics, Inc. (“miRagen”), on November 4, 2020, the Company entered into a contingent value rights agreement (the “CVR Agreement”), pursuant to which each holder of the Company’s common stock as of November 6, 2020, other than former stockholders of the private entity Viridian Therapeutics, Inc. (which merged with miRagen), received one contingent value right (a “CVR”) for each share of Company common stock held by such holder on that date. Under the CVR Agreement, holders of CVRs would have been entitled to receive a portion of the net proceeds for any dispositions of certain legacy miRagen assets consummated through December 31, 2021. As of December 31, 2021, the disposition period had expired. There were no dispositions of any such legacy assets prior to that time and, accordingly, there will be no payments made under the CVR Agreement. The CVR Agreement expires on November 4, 2025.

Exclusive License and Collaboration Agreement

In May 2023, the Company and a third-party collaborator entered into an Exclusive License and Collaboration Agreement to collaborate and conduct certain IND-enabling activities with respect to the licensed compound and licensed product. Under the terms of the agreement, the Company was granted an exclusive, royalty-bearing, worldwide license to develop, manufacture, and commercialize certain licensed compounds and licensed products in the field (the “License”). In consideration for the rights granted by the License, the Company initially issued 204,843 shares of its common stock to certain stockholders of the third-party. The shares were valued at $5.0 million and recorded as research and development expense during the three months ended

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June 30, 2023. On July 24, 2023, the Company issued 39,059 additional shares of its common stock to certain stockholders of the third-party and recorded the related $0.7 million expense as research and development expenses during three months ended September 30, 2023. Additionally, upon the date when the Company decides to pursue certain studies for the licensed compound under the agreement, the Company was obligated to issue the third-party collaborator the equivalent of $10.0 million in shares of its common stock. The Company was also obligated to make certain future milestones of up to $45.0 million upon the achievement of certain development milestones. Remaining development milestone payments would have been payable in cash. If the Company was successful in commercializing products related to the licensed compound, the Company was also obligated to pay up to $60.0 million upon the achievement of certain sales milestones as well as royalty payments equal to a percentage in the mid-single to double digits. This agreement was terminated on December 30, 2024 and no further financial obligations exist under the Exclusive License and Collaboration Agreement.

Lease Obligations

Colorado-based Office and Lab Space

The Company is party to a multi-year, non-cancelable lease agreement for its Colorado-based office and lab space (the “Colorado Lease”). The Colorado Lease includes rent escalation clauses through the lease term and a Company option to extend the lease term for up to three terms of three years each. Minimum base lease payments under the Colorado Lease, including the impact of tenant improvement allowances, are recognized on a straight-line basis over the full term of the lease. The lease term was amended in March 2021 to extend the lease maturity date to December 31, 2024. Upon adoption of ASC 842 and upon subsequent modification of the lease in 2020 and in March 2021, the Company recognized a right-of-use asset and corresponding lease liability for the Colorado Lease of approximately $1.6 million by calculating the present value of lease payments, discounted at 6%, the Company’s estimated incremental borrowing rate, over the 12 months expected remaining term.

In September 2024, the Company entered into a new, multi-year lease agreement for its Colorado-based office and lab space (the “New Colorado Lease”). Under ASC 842, the New Colorado Lease was treated as a lease modification representing an extension of the lease term for a reduced portion of the space currently in use under the existing Colorado Lease. As of the effective date, the Company recorded a $0.3 million increase in the right-of-use asset and corresponding lease liability for the extension of the lease term. The remaining space under the Colorado Lease terminated at the original maturity date of December 31, 2024. The New Colorado Lease provides for annual base rent of approximately $0.1 million during the lease term. The Company is also obligated to pay the landlord certain costs, taxes, and operating expenses. The New Colorado Lease is set to expire in December 2026. The Company has the option to extend the lease term for an additional period of five years upon notice to the landlord. The option to extend is not included in the lease term assessment as it is not reasonably certain the Company will exercise the option.

Massachusetts-based Office Space

The Company is party to a multi-year, non-cancelable lease agreement for its Massachusetts-based office space (as subsequently amended in July 2021, April 2022, July 2022, April 2024, and September 2024, the “Massachusetts Lease”). The Massachusetts Lease includes rent escalation clauses throughout the lease term. Minimum base lease payments under the Massachusetts Lease are recognized on a straight-line basis over the full term of the Massachusetts Lease. Upon initial assumption of the Massachusetts Lease in October 2020, the Company recognized a right-of-use asset and corresponding lease liability of $0.1 million by calculating the present value of lease payments, discounted at 6%, the Company’s estimated incremental borrowing rate, over the expected remaining term.

In April 2024, the Company entered into a Fourth Amendment of the Massachusetts Lease (the “Fourth Amendment”). The Fourth Amendment makes certain modifications to the Massachusetts Lease, including (i) securing 10,427 square feet of office space in a new building suite (the “New Premises”), (ii) the termination of the 10,956 square feet of leased space under the existing Massachusetts Lease (the “Original Premises”), and (iii) the extension of the expiration date of the leased space to five years from the delivery of the New Premises. The Massachusetts Lease provides for annual base rent of approximately $0.5 million during the lease term. The Company is also obligated to pay the landlord certain costs, taxes and operating expenses. Under the Fourth Amendment, the Massachusetts Lease will expire in July 2029. The Company has the option to extend the lease term for an additional period of three years upon notice to the landlord. The option to extend is not included in the lease term assessment as it is not reasonably certain the Company will exercise the option.

The Company recorded a new right-of-use asset of $1.6 million and corresponding lease liability of $1.9 million for the New Premises and simultaneously derecognized the right-of-use asset of $1.1 million and corresponding lease liability of $1.2 million for the Original Premises on the lease commencement date in April 2024.

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In September 2024, the Company entered into a Fifth Amendment of the Massachusetts Lease (the “Fifth Amendment”) to lease an additional 2,788 square feet of office space in the same building. The Fifth Amendment provides for additional annual base rent of approximately $0.1 million for the additional office space and includes annual base rent escalation clauses during the lease term. The Fifth Amendment was treated as a lease modification accounted for as a separate contract and the Company recorded a new right-of-use asset and corresponding lease liability of approximately $0.5 million related to the Fifth Amendment on the lease commencement date.

Future lease payments under noncancellable leases as of December 31, 2024 are as follows:

(in thousands)

Total future minimum lease payments 3,080

Less: imputed interest (543)

As of December 31, 2024, the Company’s operating lease obligations were reflected as short-term operating lease liabilities of $0.5 million within accrued liabilities and $2.0 million of long-term lease obligations as other liabilities in the Company’s consolidated balance sheets.

Amortization of the operating lease right-of-use assets, and corresponding reduction of operating lease obligations, amounted to $0.7 million, $0.8 million and $0.5 million for the years ended December 31, 2024, 2023 and 2022, respectively, which was included in operating expense in the consolidated statements of operations and comprehensive loss.

The Company is also required to pay for operating expenses related to the leased space, which were $0.4 million, $0.4 million and $0.3 million for the years ended December 31, 2024, 2023 and 2022, respectively. The operating expenses are incurred separately and were not included in the present value of lease payments.

9. CAPITAL STOCK

Common Stock

Under the Company’s second restated certificate of incorporation, the Company is authorized to issue 205,000,000 shares of its stock, of which 200,000,000 shares have been designated as common stock and 5,000,000 shares have been designated as convertible preferred stock, both with a par value of $0.01 per share. The number of authorized shares of common stock may be increased or decreased by the affirmative vote of the holders of a majority of the Company’s stock who are entitled to vote. Each share of common stock is entitled to one vote. The holders of common stock are entitled to receive dividends when and as declared or paid by its board of directors.

Public Offerings

In September 2024, the Company entered into an underwriting agreement with Jefferies, Goldman Sachs & Co. LLC and Stifel, Nicolaus & Company, Incorporated related to the offer and sale (the “September 2024 Public Offering”) of 12,466,600 shares of the Company’s common stock, which included 1,800,000 shares of common stock issued in connection with the exercise in full by the underwriters of their option to purchase additional shares at a public offering price of $18.75 per share, and 20,000 shares of the Company’s Series B Convertible Preferred Stock at a price per share of $1,250.0625 per share. The aggregate gross proceeds to the Company from the September 2024 Public Offering, including the exercise of the option, were approximately $258.8 million, before deducting underwriting discounts and commissions and other offering expenses payable by the Company.

In January 2024, the Company entered into an underwriting agreement with Jefferies and Leerink Partners LLC relating to the offer and sale (the “January 2024 Public Offering”) of 7,142,858 shares of the Company’s common stock at a public offering

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price of $21.00 per share. The aggregate gross proceeds to the Company from the January 2024 Public Offering were approximately $150.0 million, before deducting underwriting discounts and commissions and other offering expenses payable by the Company.

In August 2022, the Company entered into an underwriting agreement with Jefferies LLC (“Jefferies”), SVB Securities LLC (now known as Leerink Partners LLC (“Leerink Partners”)) and Evercore Group L.L.C. (“Evercore”) relating to the offer and sale of 11,352,640 shares of the Company’s common stock, which includes 1,725,000 shares of common stock issued in connection with the exercise in full by the underwriters of their option to purchase additional shares at a public offering price of $23.50 per share, and 28,084 shares of Series B Non-Voting Convertible Preferred Stock, par value $0.01 per share, at a public offering price of $1,566.745 per share (collectively the “2022 Public Offering”). The aggregate gross proceeds to the Company from the 2022 Public Offering, including the exercise of the option were approximately $311.0 million, before deducting underwriting discounts and commissions and other offering expenses payable by the Company.

Private Placements

In November 2023, the Company issued and sold in private placement transactions an aggregate of 8,869,797 shares of the Company’s common stock at a price per share of $12.38 and 92,312 shares of the Company’s Series B non-voting convertible preferred stock at a price per share of $825.3746, pursuant to securities purchase agreements with certain institutional and accredited investors. The Company received aggregate gross proceeds of approximately $186.0 million, before deducting offering expenses payable by the Company.

Common Stock Sales Agreements - Jefferies LLC

In September 2022, the Company entered into an Open Market Sale AgreementSM (the “September 2022 ATM Agreement”) with Jefferies, pursuant to which the Company may offer and sell shares of its common stock having an aggregate offering price of up to $175.0 million from time to time at prices and on terms to be determined by market conditions at the time of offering, with Jefferies acting as its sales agent. Jefferies will receive a commission of 3.0% of the gross proceeds of any shares of common stock sold under the September 2022 ATM Agreement. During the year ended December 31, 2024, the Company sold 3,058,751 shares under the September 2022 ATM Agreement with Jefferies at a weighted average price of $22.86 per share, for aggregate net proceeds of approximately $67.7 million, including commissions to Jefferies as a sales agent. During the year ended December 31, 2023, the Company sold 684,298 shares under the September 2022 ATM Agreement with Jefferies at a weighted average price of $22.30 per share, for aggregate net proceeds of approximately $14.8 million, including commissions to Jefferies as a sales agent. During the year ended December 31, 2022, 964,357 shares were sold under the September 2022 ATM Agreement at a weighted average price of $26.01 per share, for aggregate net proceeds of approximately $24.2 million, including commissions to Jefferies as a sales agent.

Under the Company’s second restated certificate of incorporation, the Company’s board of directors has the authority to designate and issue up to 5,000,000 shares of convertible preferred stock, at its discretion, in one or more classes or series and to fix the powers, preferences and rights, and the qualifications, limitations, or restrictions thereof, including dividend rights, conversion rights, voting rights, terms of redemption, and liquidation preferences, without further vote or action by the Company’s stockholders.

Series A Convertible Preferred Stock

Holders of Series A Convertible Preferred Stock are entitled to receive dividends on shares of Series A Convertible Preferred Stock equal, on an as-if-converted-to-Common-Stock basis, and in the same form as dividends actually paid on shares of the common stock. Except as otherwise required by law, the Series A Convertible Preferred Stock does not have voting rights. However, as long as any shares of Series A Convertible Preferred Stock are outstanding, the Company will not, without the affirmative vote of the holders of a majority of the then outstanding shares of the Series A Convertible Preferred Stock, (i) alter or change adversely the powers, preferences or rights given to the Series A Convertible Preferred Stock, (ii) alter or amend the Certificate of Designation, (iii) amend its certificate of incorporation or other charter documents in any manner that adversely affects any rights of the holders of Series A Convertible Preferred Stock, (iv) increase the number of authorized shares of Series A Convertible Preferred Stock, (v) at any time while at least 30% of the originally issued Series A Convertible Preferred Stock remains issued and outstanding, consummate a Fundamental Transaction (as defined in the Certificate of Designation) or (vi) enter into any agreement with respect to any of the foregoing. The Series A Convertible Preferred Stock does not have a preference upon any liquidation, dissolution, or winding-up of the Company. Each share of Series A Convertible Preferred Stock is convertible into 66.67 shares of common stock at any time at the option of the holder thereof, subject to certain limitations, including that a holder of Series A Convertible Preferred Stock is prohibited from converting shares of Series A Convertible Preferred Stock into shares of common stock if, as a result of such conversion, such holder, together with its

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affiliates, would beneficially own more than a specified percentage (to be established by the holder between 4.99% and 19.99%) of the total number of shares of common stock issued and outstanding immediately after giving effect to such conversion.

As of December 31, 2024 and 2023, there were 134,864 and 172,435 shares of Series A Convertible Preferred Stock outstanding, respectively.

Series B Convertible Preferred Stock

Each share of Series B Convertible Preferred Stock is convertible into 66.67 shares of common stock, subject to certain limitations, including that a holder of Series B Convertible Preferred Stock is prohibited from converting shares of Series B Convertible Preferred Stock into shares of common stock if, as a result of such conversion, such holder, together with its affiliates, would beneficially own more than a specified percentage (to be established by the holder between 4.99% and 19.99%) of the total number of shares of common stock issued and outstanding immediately after giving effect to such conversion. The powers, preferences, rights, qualifications, limitations, and restrictions applicable to the Series B Convertible Preferred Stock are set forth in the Certificate of Designation filed in September 2021.