
General Information This section provides foundational details about the company's filing, registrant status, and key corporate information Filing Information This section details the company's filing as a Form 10-Q for the quarterly period ended June 30, 2025, identifying Cartesian Therapeutics, Inc. as the registrant, incorporated in Delaware, with Commission File Number 001-37798 - The report is a Quarterly Report on Form 10-Q for the period ended June 30, 2025, filed by Cartesian Therapeutics, Inc. (formerly Selecta Biosciences, Inc.)1 Registrant Information The registrant's principal executive offices are located in Frederick, MD. The company's common stock (RNAC) is registered on The Nasdaq Stock Market LLC, and Contingent Value Rights are also registered - The principal executive offices are at 7495 New Horizon Way, Frederick, MD 217032 Registered Securities | Title of each class | Trading Symbol(s) | Name of each exchange on which registered | | :-------------------------- | :---------------- | :---------------------------------------- | | Common Stock, $0.0001 par value per share | RNAC | The Nasdaq Stock Market LLC | | Contingent Value Rights | | | Filer Status The company confirms compliance with SEC filing requirements, having filed all reports and submitted Interactive Data Files. It is classified as a Non-accelerated filer and a Smaller reporting company, with 26,002,042 shares of common stock outstanding as of August 1, 2025 - The registrant has filed all required reports and submitted every Interactive Data File during the preceding 12 months3 - The company is classified as a Non-accelerated filer and a Smaller reporting company4 - As of August 1, 2025, 26,002,042 shares of common stock, par value $0.0001 per share, were outstanding5 FORWARD-LOOKING STATEMENTS This section highlights that the report contains forward-looking statements regarding future operations and financial position, which are subject to various known and unknown risks and uncertainties Forward-Looking Statements Overview This section outlines the forward-looking nature of the report, emphasizing that statements about future operations, financial position, business strategy, product approvals, R&D costs, and cash sufficiency are predictions subject to known and unknown risks and uncertainties. It lists numerous factors that could cause actual results to differ materially, including CVR payouts, merger benefits, market size, preclinical/clinical development, third-party dependence, product candidate efficacy/safety, regulatory approvals, macroeconomic conditions, global events, intellectual property, and personnel - The Quarterly Report contains forward-looking statements covered by safe harbor provisions, including those regarding future results of operations, financial position, business strategy, prospective products, and R&D costs9 - Actual results, performance, or achievements may differ materially from forward-looking statements due to known and unknown risks, uncertainties, and other important factors9 - Key factors that could cause actual results to differ include future payouts under contingent value rights (CVR), ability to achieve expected benefits from the Merger, future financial position, preclinical and clinical development activities, dependence on third parties, efficacy and safety of product candidates, timing of regulatory approvals, macroeconomic conditions, global events, intellectual property protection, and ability to obtain and retain key personnel1013 PART I. FINANCIAL INFORMATION This section presents the unaudited consolidated financial statements and management's discussion and analysis of the company's financial performance and condition Item 1. Financial Statements (unaudited) This section presents the unaudited consolidated financial statements for Cartesian Therapeutics, Inc. and its subsidiaries, including the Balance Sheets, Statements of Operations and Comprehensive Income (Loss), Statements of Changes in Convertible Preferred Stock and Stockholders' Deficit, and Statements of Cash Flows, along with accompanying notes. These statements are prepared in accordance with SEC rules for interim financial reporting and U.S. GAAP Consolidated Balance Sheets This section presents the company's consolidated financial position, detailing assets, liabilities, and stockholders' deficit at specific reporting dates Consolidated Balance Sheet Summary | Metric | June 30, 2025 (in thousands) | December 31, 2024 (in thousands) | Change (in thousands) | | :--------------------------------- | :----------------------------- | :------------------------------- | :-------------------- | | Cash and cash equivalents | $160,324 | $212,610 | $(52,286) | | Total current assets | $163,395 | $216,626 | $(53,231) | | Total assets | $388,893 | $435,023 | $(46,130) | | Total current liabilities | $12,256 | $22,976 | $(10,720) | | Contingent value right liability (non-current) | $352,100 | $387,739 | $(35,639) | | Total liabilities | $391,420 | $441,825 | $(50,405) | | Total stockholders' deficit | $(2,527) | $(6,802) | $4,275 | Consolidated Statements of Operations and Comprehensive Income (Loss) This section outlines the company's financial performance, including revenue, operating expenses, and net income or loss over specified periods Consolidated Statements of Operations and Comprehensive Income (Loss) Summary | Metric (in thousands) | 3 Months Ended June 30, 2025 | 3 Months Ended June 30, 2024 | 6 Months Ended June 30, 2025 | 6 Months Ended June 30, 2024 | | :------------------------------------------ | :--------------------------- | :--------------------------- | :--------------------------- | :--------------------------- | | Total revenue | $298 | $33,445 | $1,398 | $39,285 | | Total operating expenses | $22,109 | $19,688 | $45,098 | $38,876 | | Operating (loss) income | $(21,811) | $13,757 | $(43,700) | $409 | | Change in fair value of contingent value right liability | $35,300 | $2,500 | $35,646 | $(36,800) | | Net income (loss) | $15,886 | $13,836 | $(1,824) | $(42,988) | | Basic EPS | $0.51 | $0.58 | $(0.07) | $(3.88) | | Diluted EPS | $0.50 | $0.54 | $(0.07) | $(3.88) | - Collaboration and license revenue decreased by $33.3 million (100%) for the three months ended June 30, 2025, and by $38.7 million (99%) for the six months ended June 30, 2025, primarily due to a $30.0 million development milestone recognized in Q2 2024 under the Sobi License and termination of the Astellas Agreement181192 - Net income for the three months ended June 30, 2025, increased by $2.1 million (15%) to $15.9 million, largely driven by a $32.8 million increase in income from the decrease in fair value of the CVR liability190 - Net loss for the six months ended June 30, 2025, decreased by $41.2 million (96%) to $1.8 million, primarily due to income from changes in the fair value of CVR and warrant liabilities202 Consolidated Statements of Changes in Convertible Preferred Stock and Stockholders' Deficit This section details changes in the company's equity, including common stock, additional paid-in capital, and accumulated deficit Consolidated Statements of Changes in Convertible Preferred Stock and Stockholders' Deficit Summary | Metric (in thousands) | Balance at Dec 31, 2024 | Balance at June 30, 2025 | | :-------------------------------- | :---------------------- | :----------------------- | | Common stock (shares) | 25,767,369 | 26,000,065 | | Additional paid-in capital | $689,887 | $695,942 | | Accumulated deficit | $(692,071) | $(693,895) | | Total stockholders' deficit | $(6,802) | $(2,527) | - The company's total stockholders' deficit improved from $(6,802) thousand at December 31, 2024, to $(2,527) thousand at June 30, 2025, primarily due to net income and stock-based compensation21 Consolidated Statements of Cash Flows This section presents the company's cash inflows and outflows from operating, investing, and financing activities Consolidated Statements of Cash Flows Summary | Cash Flow Activity (in thousands) | Six Months Ended June 30, 2025 | Six Months Ended June 30, 2024 | | :-------------------------------- | :----------------------------- | :----------------------------- | | Net cash used in operating activities | $(40,629) | $(30,363) | | Net cash used in investing activities | $(3,670) | $(2,189) | | Net cash (used in) provided by financing activities | $(7,965) | $43,151 | | Net change in cash, cash equivalents, and restricted cash | $(52,220) | $10,608 | | Cash, cash equivalents, and restricted cash at end of period | $162,059 | $88,896 | - Net cash used in operating activities increased by $10.2 million to $40.6 million for the six months ended June 30, 2025, compared to $30.4 million in the prior year225 - Net cash flow from financing activities shifted from a $43.2 million provision in 2024 to an $8.0 million usage in 2025, primarily due to CVR distributions in 2025 versus proceeds from the 2023 Private Placement in 2024228 Notes to Consolidated Financial Statements This section provides detailed explanations and additional information supporting the consolidated financial statements Note 1. Description of the Business This note describes the company's core business as a clinical-stage biotechnology firm, its merger, and key financial status - Cartesian Therapeutics, Inc. is a clinical-stage biotechnology company pioneering cell therapy for autoimmune diseases, leveraging a proprietary technology and manufacturing platform30 - The company completed a merger with Old Cartesian on November 13, 2023, involving a stock-for-stock transaction and a private investment of approximately $60.25 million3132 - Contingent Value Rights (CVRs) were distributed to eligible holders, entitling them to payments from the disposition or monetization of the company's legacy assets33 - A 1-for-30 reverse stock split was effected on April 4, 2024, impacting all share and per-share amounts presented in the report35 - As of June 30, 2025, the company's cash, cash equivalents, and restricted cash totaled $162.1 million, expected to fund current planned operations for at least the next 12 months43 - The company had an accumulated deficit of $693.9 million as of June 30, 2025, and anticipates continued operating losses due to research and development costs45 Note 2. Basis of Presentation This note outlines the principles for preparing the consolidated financial statements, including consolidation and significant estimates - The consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries, with all significant intercompany accounts and transactions eliminated46 - Management makes significant estimates in areas such as fair value of acquired intangible assets, CVRs, deferred income taxes, revenue recognition, accrued R&D expenses, stock-based compensation, and liability-classified warrants47 - The company views its operations and manages its business in one operating segment, focused on the research and development of cell therapy product candidates48 Note 3. Summary of Significant Accounting Policies This note summarizes the company's key accounting policies and the evaluation of new accounting pronouncements - There have been no material changes to the company's significant accounting policies during the six months ended June 30, 202549 - The company is evaluating the impact of ASU 2023-09 (Income Taxes, effective Dec 31, 2025) and ASU 2024-03 (Expense Disaggregation Disclosures, effective Dec 31, 2027) on its financial statements5051 Note 4. Goodwill and Intangible Assets This note details the company's goodwill and indefinite-lived intangible assets, primarily from the Old Cartesian merger - The merger with Old Cartesian on November 13, 2023, resulted in goodwill of approximately $48.2 million, with no changes to its carrying value during the six months ended June 30, 202553 Indefinite-Lived Intangible Assets | Indefinite-Lived Intangible Assets (in thousands) | June 30, 2025 | December 31, 2024 | | :------------------------------------ | :------------ | :---------------- | | Descartes-08 for MG | $93,900 | $93,900 | | Descartes-08 for SLE | $56,700 | $56,700 | | Total in-process R&D assets | $150,600 | $150,600 | Note 5. Investments This note describes the company's investment in Cyrus Biotechnology, Inc. and its accounting treatment - The company holds a $2.0 million investment in Cyrus Biotechnology, Inc.'s Series B Preferred Stock, recognized at cost5557 - The company is not the primary beneficiary of Cyrus and therefore does not consolidate it; its maximum exposure to loss is limited to the carrying value of the investment5657 Note 6. Net Income (Loss) Per Share Allocable to Common Stockholders This note presents the basic and diluted net income or loss per common share, including the calculation of weighted-average shares Net Income (Loss) Per Share | Metric | 3 Months Ended June 30, 2025 | 3 Months Ended June 30, 2024 | 6 Months Ended June 30, 2025 | 6 Months Ended June 30, 2024 | | :------------------------------------------ | :--------------------------- | :--------------------------- | :--------------------------- | :--------------------------- | | Net income (loss) allocable to common stock - basic and diluted | $13,258 | $9,628 | $(1,824) | $(42,988) | | Basic EPS | $0.51 | $0.58 | $(0.07) | $(3.88) | | Diluted EPS | $0.50 | $0.54 | $(0.07) | $(3.88) | | Weighted-average common shares outstanding - basic | 25,980,262 | 16,723,479 | 25,941,670 | 11,068,749 | | Weighted-average common shares outstanding - diluted | 26,447,251 | 17,791,143 | 25,941,670 | 11,068,749 | Potential Dilutive Shares Excluded | Potential Dilutive Shares Excluded | 3 Months Ended June 30, 2025 | 3 Months Ended June 30, 2024 | 6 Months Ended June 30, 2025 | 6 Months Ended June 30, 2024 | | :--------------------------------- | :--------------------------- | :--------------------------- | :--------------------------- | :--------------------------- | | Common stock options and restricted stock units | 2,336,681 | 740,211 | 3,030,053 | 2,344,017 | | Warrants to purchase common stock | 692,523 | 975,132 | 692,523 | 975,132 | | Series A Preferred Stock | 4,026,346 | 5,544,719 | 4,026,346 | 5,544,719 | | Series B Preferred Stock | 437,927 | — | 437,927 | — | | Total | 7,493,477 | 7,260,062 | 8,186,849 | 8,863,868 | Note 7. Fair Value Measurements This note details the fair value measurements for financial assets and liabilities, particularly warrant and CVR liabilities Fair Value Assets | Fair Value Assets (in thousands) | June 30, 2025 | December 31, 2024 | | :------------------------------- | :------------ | :---------------- | | Money market funds | $39,933 | $39,088 | Fair Value Liabilities | Fair Value Liabilities (in thousands) | June 30, 2025 | December 31, 2024 | | :------------------------------------ | :------------ | :---------------- | | Warrant liabilities | $1,364 | $3,836 | | Contingent value right liability | $352,100 | $395,500 | - Warrant liabilities and contingent value right (CVR) liability are classified as Level 3 fair value measurements, relying on significant unobservable inputs like stock price volatility, expected life, estimated cash flows, and probabilities of success667476 - The CVR liability decreased by $35.6 million to $352.1 million as of June 30, 2025, primarily due to changes in the timing of anticipated payments76 - The 2019 Warrants expired on December 23, 2024, and the 2022 Warrants are expected to expire on April 11, 20276869 Note 8. Property and Equipment This note provides details on the company's property and equipment, including laboratory assets and construction in process Property and Equipment | Property and Equipment (in thousands) | June 30, 2025 | December 31, 2024 | | :------------------------------------ | :------------ | :---------------- | | Laboratory equipment | $8,001 | $7,295 | | Construction in process | $2,798 | $695 | | Total property and equipment, net | $12,285 | $9,912 | - Depreciation expense was $0.6 million for the three months ended June 30, 2025, and $1.2 million for the six months ended June 30, 202578 Note 9. Accrued Expenses This note details the components of accrued expenses, including payroll, patent fees, and R&D costs Accrued Expenses | Accrued Expenses (in thousands) | June 30, 2025 | December 31, 2024 | | :------------------------------ | :------------ | :---------------- | | Payroll and employee related expenses | $2,786 | $3,534 | | Accrued patent fees | $185 | $813 | | Accrued external R&D costs | $2,135 | $2,987 | | Accrued professional and consulting services | $1,712 | $3,674 | | Total accrued expenses | $8,012 | $12,076 | - Accrued expenses decreased from $12.1 million at December 31, 2024, to $8.0 million at June 30, 2025, primarily due to decreases in payroll, patent fees, and professional services79 Note 10. Leases This note describes the company's lease agreements, including expansions and impairment charges for certain properties - The company expanded its Frederick, MD manufacturing and office space through multiple amendments, with the latest in March 2025 for an additional 6,439 square feet, commencing September 1, 202580838588 - The right-of-use assets and related furniture for the Watertown, MA lease were fully impaired in 2024, resulting in a $7.6 million impairment charge, as the company ceased use of the space9697 Lease Metrics | Lease Metrics (in thousands) | June 30, 2025 | | :--------------------------- | :------------ | | Total operating lease liabilities | $13,349 | | Weighted-average remaining lease term | 4.2 years | | Weighted-average discount rate | 11.8% | Note 11. Equity This note details the company's equity transactions, including private placements, stock splits, and preferred stock - The 2024 Private Placement on July 2, 2024, issued 3,563,247 common shares and 2,937,903 Series B Preferred Stock shares, generating approximately $130.0 million in gross proceeds101165 - An 'At-the-Market' offering program for up to $100.0 million was established in December 2024, but no shares were sold during the six months ended June 30, 2025102103 - A 1-for-30 reverse stock split was effective April 4, 2024, combining shares and adjusting per-share amounts105 Preferred Stock Outstanding | Preferred Stock Outstanding (Shares) | June 30, 2025 | | :----------------------------------- | :------------ | | Series A Preferred Stock | 120,790.402 | | Series B Preferred Stock | 437,927 | | Total convertible into common stock | 4,464,273 | Reserved Shares for Future Issuance | Reserved Shares for Future Issuance (June 30, 2025) | Number of Shares | | :-------------------------------------------------- | :--------------- | | Exercise of warrants | 692,523 | | Shares available for future stock incentive awards | 4,123,417 | | Unvested restricted stock units | 533,331 | | Outstanding common stock options | 2,496,722 | | Series A Preferred Stock | 4,026,346 | | Series B Preferred Stock | 437,927 | | Total | 12,310,266 | Note 12. Stock Incentive Plans This note outlines the company's stock incentive plans and related stock-based compensation expenses - The company maintains the 2016 Plan, 2018 Inducement Incentive Award Plan, and the assumed Old Cartesian Plan, with 3,582,706, 458,737, and 36,179 shares available for future grant, respectively110111112 Stock-Based Compensation Expense | Stock-Based Compensation Expense (in thousands) | 3 Months Ended June 30, 2025 | 3 Months Ended June 30, 2024 | 6 Months Ended June 30, 2025 | 6 Months Ended June 30, 2024 | | :---------------------------------------------- | :--------------------------- | :--------------------------- | :--------------------------- | :--------------------------- | | Research and development | $1,810 | $776 | $3,085 | $1,488 | | General and administrative | $1,469 | $815 | $2,702 | $1,534 | | Total stock-based compensation expense | $3,279 | $1,591 | $5,787 | $3,022 | - A separation agreement with the former Chief Technology Officer resulted in $0.7 million of stock-compensation expense during the three and six months ended June 30, 2025, due to accelerated vesting114 - As of June 30, 2025, total unrecognized compensation expense related to unvested common stock options was $15.6 million (expected over 3.0 years) and for restricted stock units was $6.6 million (expected over 2.8 years)117120 Note 13. Revenue Arrangements This note details the company's revenue sources, including collaboration, license, and grant revenues, and their changes - The Astellas Agreement, granting an exclusive license for IdeXork technology for Pompe disease, was terminated effective June 6, 2024122123 - Revenue from the Sobi License, including a $30.0 million development milestone for SEL-212, was recognized in Q2 2024, but no revenue was recognized from this source in the three and six months ended June 30, 2025126128 - Grant revenue increased to $0.3 million for the three months and $1.0 million for the six months ended June 30, 2025, due to increased reimbursable expenses under a NINDS award for RNA-based CAR-T cells130131 - As of June 30, 2025, there were no unsatisfied performance obligations from contracts with customers129 Note 14. Related-Party Transactions This note discloses transactions with related parties, including stock purchases and warrant exercises - Dr. Timothy A. Springer and his affiliate, TAS Partners LLC, purchased 99,140.326 shares of Series A Preferred Stock for $40.0 million in Q1 2024 as part of the 2023 Private Placement132133 - TAS Partners LLC exercised 65,681 Amended 2019 Warrants for $2.9 million in cash on March 26, 2024, receiving common stock and CVRs134 - No related-party transactions occurred during the three and six months ended June 30, 2025134 Note 15. Collaboration and License Agreements This note summarizes the company's key in-license and out-license agreements, including their terms and status - The Biogen Agreement grants a non-exclusive license for T-cell modified with mRNA technology for autoimmune diseases, with patents generally expiring around March 2030-2032135138 - The NCI Agreement grants a license for anti-BCMA CAR-T cell products for MG, pemphigus vulgaris, and immune thrombocytopenic purpura, requiring low five-digit annual royalties and potential benchmark royalties up to $0.8 million139141144 - The Astellas Agreement for Xork was terminated effective June 6, 2024123209 - The Sobi License for SEL-212 involves potential milestone payments up to $630.0 million and tiered royalties, with proceeds distributed to CVR holders125210 - Sobi initiated a rolling BLA for SEL-212 in June 2024, triggering a $30.0 million payment126 - The Genovis Agreement for Xork enzyme technology was terminated effective September 13, 2024147 Note 16. Income Taxes This note discusses the company's income tax position, including the non-recognition of deferred tax benefits - As of June 30, 2025, the company has not recorded any U.S. federal or state income tax benefits for net losses or earned research and orphan drug credits due to the uncertainty of realizing a benefit from those items in the future149 Note 17. Commitments and Contingencies This note addresses the company's legal proceedings, indemnification obligations, and other contingent liabilities - As of June 30, 2025, the company was not a party to any litigation that could have a material adverse effect on its business, financial position, results of operations, or cash flows150153 - The company indemnifies its officers, directors, consultants, and employees, and has indemnification arrangements under certain facility leases, with no material losses experienced to date151152 Note 18. Restructuring This note details the company's restructuring plan, including headcount reductions and associated payments - In April and August 2023, the company implemented a restructuring plan, including an approximate 90% reduction in headcount, to extend its cash runway and prioritize product development154 - Payments for the restructuring plan were completed in the first quarter of 2025, with no restructuring charges recognized for the six months ended June 30, 2025155 Note 19. Segment Information This note confirms the company operates as a single segment and provides a breakdown of key financial metrics by segment - The company operates as a single operating segment156 Segment Financials | Segment Financials (in thousands) | 3 Months Ended June 30, 2025 | 3 Months Ended June 30, 2024 | 6 Months Ended June 30, 2025 | 6 Months Ended June 30, 2024 | | :-------------------------------- | :--------------------------- | :--------------------------- | :--------------------------- | :--------------------------- | | Total revenue | $298 | $33,445 | $1,398 | $39,285 | | Research and development | $14,869 | $12,661 | $29,543 | $22,399 | | General and administrative | $7,240 | $7,027 | $15,555 | $16,477 | | Net income (loss) | $15,886 | $13,836 | $(1,824) | $(42,988) | - R&D expenses for Descartes-08 for MG increased by 71% to $5.0 million for the three months and by 187% to $12.1 million for the six months ended June 30, 2025, primarily due to the ongoing Phase 3 AURORA trial156184194 - R&D expenses for early stage programs increased by 225% to $1.7 million for the three months and by 313% to $2.7 million for the six months ended June 30, 2025, due to increased discovery and manufacturing operations expenses156184195 Note 20. Subsequent Events This note confirms that no events requiring disclosure have occurred since the financial statement date - The company has evaluated subsequent events through the date of financial statement issuance and concluded that no events have occurred that require disclosure157 Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations This section provides management's perspective on the company's financial condition and results of operations, emphasizing its focus as a clinical-stage biotechnology company pioneering cell therapy for autoimmune diseases. It discusses the impact of the November 2023 merger, ongoing operating losses, and strategies for future funding Overview This section provides an overview of Cartesian Therapeutics as a clinical-stage biotechnology company focused on cell therapy for autoimmune diseases - Cartesian Therapeutics is a clinical-stage biotechnology company pioneering cell therapy for autoimmune diseases, characterized by repeated dosing, outpatient administration, and no pre-treatment chemotherapy159 - The lead product candidate, Descartes-08, showed deep and durable clinical benefit in a Phase 2b trial for myasthenia gravis (MG), with 83% of participants maintaining clinically meaningful improvements at six months and sustained improvements at 12 months159 Merger This section details the merger of Selecta Biosciences with Old Cartesian in November 2023 and the subsequent name change - Selecta Biosciences, Inc. merged with Old Cartesian on November 13, 2023, and subsequently changed its corporate name to Cartesian Therapeutics, Inc160 - The merger involved First Merger Sub merging into Old Cartesian, followed by Old Cartesian merging into Second Merger Sub, with Old Cartesian becoming Cartesian Bio, LLC160 Financial Operations This section discusses the company's financing strategies, ongoing operating losses, and future funding expectations - Operations are financed primarily through public/private equity offerings, research grants, and collaboration/license arrangements, with no product sales generated to date161 - The company incurred a net loss of $1.8 million for the six months ended June 30, 2025, and expects continued significant operating losses due to advancing Descartes-08 for MG through Phase 3, developing other candidates, protecting IP, hiring staff, and public company costs162 Research and Development Expenses | Research and Development Expenses (in thousands) | 3 Months Ended June 30, 2025 | 3 Months Ended June 30, 2024 | 6 Months Ended June 30, 2025 | 6 Months Ended June 30, 2024 | | :----------------------------------------------- | :--------------------------- | :--------------------------- | :--------------------------- | :--------------------------- | | Legacy Selecta programs | $0 | $3,570 | $0 | $6,347 | | Descartes-08 for MG | $5,035 | $2,945 | $12,071 | $4,211 | | Early stage programs | $1,715 | $528 | $2,705 | $655 | | Total research and development expenses | $14,869 | $12,661 | $29,543 | $22,399 | - The company believes existing cash, cash equivalents, and restricted cash of $162.1 million as of June 30, 2025, will fund its operating expenses and capital expenditure requirements into mid-2027166 Components of our Results of Operations This section defines the key components of the company's financial results, including revenue and expense categories - Revenue primarily consists of collaboration and license revenue (upfront and milestone payments) and grant revenue (funding for specific research and development services)168169 - Research and development expenses include fees paid to contract research organizations, internal manufacturing and quality-related expenses, process development costs, and compensation for R&D employees, expensed as incurred171172 - General and administrative expenses primarily cover salaries and benefits for executive, finance, business development, and support functions, along with facility-related costs and professional fees173 - Fair value changes for warrant liabilities, contingent value right (CVR) liability, and forward contract liabilities are remeasured quarterly and recognized as components of earnings177178179 Results of Operations This section analyzes the company's financial performance over the reported periods, highlighting key changes in revenue and expenses Comparison of the Three Months Ended June 30, 2025 and 2024 This section compares the company's financial results for the three-month periods ended June 30, 2025, and 2024 Three Months Ended June 30, 2025 vs 2024 | Metric (in thousands) | 3 Months Ended June 30, 2025 | 3 Months Ended June 30, 2024 | Change (in thousands) | Change (%) | | :------------------------------------------ | :--------------------------- | :--------------------------- | :-------------------- | :--------- | | Total revenue | $298 | $33,445 | $(33,147) | (99)% | | Research and development | $14,869 | $12,661 | $2,208 | 17% | | General and administrative | $7,240 | $7,027 | $213 | 3% | | Operating (loss) income | $(21,811) | $13,757 | $(35,568) | (259)% | | Change in fair value of contingent value right liability | $35,300 | $2,500 | $32,800 | 1,312% | | Net income | $15,886 | $13,836 | $2,050 | 15% | - Collaboration and license revenue decreased by $33.3 million (100%) due to the $30.0 million Sobi development milestone recognized in Q2 2024 not recurring in Q2 2025181 - Research and development expenses increased by $2.2 million (17%) to $14.9 million, driven by the ongoing Phase 3 AURORA trial for Descartes-08 for MG and increased early-stage program and employee expenses183184 - Income from the change in fair value of CVR liability increased by $32.8 million (1,312%) to $35.3 million, primarily due to changes in the timing of anticipated payments188 Comparison of the Six Months Ended June 30, 2025 and 2024 This section compares the company's financial results for the six-month periods ended June 30, 2025, and 2024 Six Months Ended June 30, 2025 vs 2024 | Metric (in thousands) | 6 Months Ended June 30, 2025 | 6 Months Ended June 30, 2024 | Change (in thousands) | Change (%) | | :------------------------------------------ | :--------------------------- | :--------------------------- | :-------------------- | :--------- | | Total revenue | $1,398 | $39,285 | $(37,887) | (96)% | | Research and development | $29,543 | $22,399 | $7,144 | 32% | | General and administrative | $15,555 | $16,477 | $(922) | (6)% | | Operating (loss) income | $(43,700) | $409 | $(44,109) | (10,785)% | | Change in fair value of contingent value right liability | $35,646 | $(36,800) | $72,446 | (197)% | | Net loss | $(1,824) | $(42,988) | $41,164 | (96)% | - Collaboration and license revenue decreased by $38.7 million (99%) due to the Sobi development milestone and Astellas Agreement termination in 2024192 - Research and development expenses increased by $7.1 million (32%) to $29.5 million, driven by the ongoing Phase 3 AURORA trial for Descartes-08 for MG and increased early-stage program and employee expenses194195 - Income from the change in fair value of CVR liability increased by $72.4 million (197%) to $35.6 million, primarily due to changes in the timing of anticipated payments199 Liquidity and Capital Resources This section discusses the company's ability to meet its short-term and long-term financial obligations and its funding sources Collaboration and License Agreements This section details the company's in-license and out-license agreements, which contribute to its liquidity - In-license agreements include Biogen (non-exclusive, sublicensable patent license for T-cell modified with mRNA technology) and NCI (non-exclusive, worldwide license for anti-BCMA CAR-T cell products for autoimmune diseases, with annual and benchmark royalties)207208 - Out-license agreements include the terminated Astellas Agreement (June 2024) and the Sobi License for SEL-212, which provides for significant milestone and royalty payments, with proceeds distributed to CVR holders209210 Financings This section outlines the company's financing activities, including equity offerings and private placements - An 'At-the-Market' equity offering program allows for sales of up to $100.0 million in common stock, but no shares were sold during the six months ended June 30, 2025211 - The 2023 Private Placement generated $60.25 million from Series A Preferred Stock, with $40.0 million issued in Q1 2024212213 - The 2024 Private Placement generated approximately $130.0 million in gross proceeds from the issuance of common stock and Series B Preferred Stock214 Future funding requirements This section addresses the company's anticipated need for additional capital to support ongoing operations and development - The company expects continued operating losses and requires substantial additional financing to fund operations, R&D, and commercialization efforts215216 - Future capital requirements depend on factors such as the scope and costs of clinical trials, preclinical development, manufacturing, regulatory review, commercialization activities, headcount growth, and intellectual property protection219227 - The company evaluates various funding sources (collaborations, licenses, debt, equity), noting that equity sales would dilute existing stockholders217218 Cash Requirements due to Contractual Obligations and Other Commitments This section details the company's contractual cash obligations, including lease payments and contingent license fees - Remaining lease payments include $8.3 million for Watertown, MA (through May 2028), $0.5 million for Gaithersburg, MD (through January 2027), and $9.4 million for Frederick, MD (through June 2031)220221222 - Contingent future payments for in-license agreements (Biogen, NCI, 3SBio) are based on regulatory and commercial milestones or royalties, but their timing and likelihood are currently unestimable223 - Payments for the Watertown lease liability and 3SBio license agreement are subject to potential reimbursement through deductions to CVR distributions220223 Summary of Cash Flows This section provides a summary of the company's cash flow activities from operations, investing, and financing Summary of Cash Flows | Cash Flow Activity (in thousands) | Six Months Ended June 30, 2025 | Six Months Ended June 30, 2024 | | :-------------------------------- | :----------------------------- | :----------------------------- | | Operating activities | $(40,629) | $(30,363) | | Investing activities | $(3,670) | $(2,189) | | Financing activities | $(7,965) | $43,151 | | Net change in cash | $(52,220) | $10,608 | - Net cash used in operating activities increased by $10.2 million to $40.6 million for the six months ended June 30, 2025225 - Net cash used in investing activities increased by $1.5 million to $3.7 million for the six months ended June 30, 2025, primarily due to purchases of property and equipment226 - Net cash flow from financing activities shifted from a $43.2 million provision in 2024 to an $8.0 million usage in 2025, mainly due to CVR distributions in 2025 and proceeds from the 2023 Private Placement in 2024228 Recent Accounting Pronouncements This section refers to Note 3 for details on recently adopted or issued accounting pronouncements - For a discussion of recently adopted or issued accounting pronouncements, refer to Note 3 to the unaudited consolidated financial statements229 Off-Balance Sheet Arrangements This section confirms the absence of any off-balance sheet arrangements as of the reporting date - As of June 30, 2025, the company did not have any off-balance sheet arrangements as defined in the rules and regulations of the SEC230 Critical Accounting Policies and Use of Estimates This section states there were no material changes to critical accounting policies from the prior annual report - There were no material changes to the company's critical accounting policies during the three and six months ended June 30, 2025, from those described in its Annual Report on Form 10-K for the year ended December 31, 2024231 Smaller Reporting Company This section confirms the company's status as a smaller reporting company, allowing for scaled disclosure requirements - The company qualifies as a 'smaller reporting company' under SEC rules, allowing it to take advantage of certain scaled disclosure requirements232 - The company will remain a smaller reporting company until its public float exceeds $700 million or it meets specific revenue and public float thresholds232 Item 3. Quantitative and Qualitative Disclosures About Market Risk The company's primary market risk exposure is interest rate sensitivity, affecting its cash, cash equivalents, and restricted cash ($162.1 million as of June 30, 2025). Due to the short-term and low-risk profile of its money market accounts and a policy to hold marketable securities to maturity, a 100 basis point change in interest rates would not materially affect the fair market value of these assets - The company's primary exposure to market risk is interest rate sensitivity, which affects its cash, cash equivalents, and restricted cash, totaling $162.1 million as of June 30, 2025233 - Due to the short-term and low-risk profile of its money market accounts and a policy to hold marketable securities to maturity, an immediate 100 basis point change in interest rates would not have a material effect on the fair market value of these assets233 Item 4. Controls and Procedures Management, including the CEO and CFO, evaluated the effectiveness of disclosure controls and procedures as of June 30, 2025, concluding they were effective at a reasonable assurance level. The section acknowledges inherent limitations in any internal control system and states there were no material changes in internal control over financial reporting during the quarter - Management, with the participation of the Chief Executive Officer and Chief Financial Officer, concluded that disclosure controls and procedures were effective at the reasonable assurance level as of June 30, 2025234 - There are inherent limitations to the effectiveness of any system of internal control over financial reporting, providing only reasonable assurance and subject to risks like cost limitations, human error, and fraud235 - There were no changes in internal control over financial reporting during the three months ended June 30, 2025, that have materially affected, or are reasonably likely to materially affect, internal control over financial reporting236 PART II. OTHER INFORMATION This section covers miscellaneous disclosures, including legal proceedings, risk factors, equity sales, and exhibits Item 1. Legal Proceedings The company reported no legal proceedings - No legal proceedings were reported238 Item 1A. Risk Factors The company refers to the risk factors previously disclosed in its Annual Report on Form 10-K for the year ended December 31, 2024, stating there have been no material changes - There have been no material changes from the risk factors previously disclosed in the Annual Report on Form 10-K for the year ended December 31, 2024239 Item 2. Unregistered Sales of Equity Securities and Use of Proceeds This item is marked as 'Not applicable.' - This item is not applicable240 Item 3. Defaults Upon Senior Securities The company reported no defaults upon senior securities - No defaults upon senior securities were reported241 Item 4. Mine Safety Disclosures The company reported no mine safety disclosures - No mine safety disclosures were reported242 Item 5. Other Information On May 15, 2025, the Chief Medical Officer, Milos Miljkovic, adopted a Rule 10b5-1(c) trading plan for the exercise of vested stock options and potential sale of up to 30,528 common shares, plus an additional 2,689 shares, until March 31, 2026. No other officers or directors reported adopting, modifying, or terminating such trading arrangements during the quarter - On May 15, 2025, the Chief Medical Officer adopted a Rule 10b5-1(c) trading plan for the exercise of vested stock options and potential sale of up to 30,528 common shares and an additional 2,689 shares until March 31, 2026243 - No other officer or director reported adopting, modifying, or terminating any Rule 10b5-1 or non-Rule 10b5-1 trading arrangement during the fiscal quarter ended June 30, 2025244 Item 6. Exhibits This section provides an index of exhibits filed with the Quarterly Report, including merger agreements, certificates of incorporation, preferred stock designations, a lease amendment, and various certifications - The exhibit index includes the Agreement and Plan of Merger, Certificates of Amendment to the Restated Certificate of Incorporation, Certificates of Designation for Series A and B Preferred Stock, a Fourth Amendment to Lease Agreement, and various certifications (e.g., Rule 13a-14(a), 18 U.S.C. Section 1350)247248 SIGNATURES The report was signed by Carsten Brunn, Ph.D., President and Chief Executive Officer, and Blaine Davis, Chief Financial Officer, on August 7, 2025 - The report was signed by Carsten Brunn, Ph.D., President and Chief Executive Officer, and Blaine Davis, Chief Financial Officer, on August 7, 2025252