Cellectis Reports Full Year 2025 Financial Results and Provides a Business Update

NEW YORK, March 19, 2026(GLOBE NEWSWIRE)-- Cellectis (the “Company”) (Euronext Growth: ALCLS - NASDAQ: CLLS), a clinical-stage biotechnology company using its pioneering gene editing platform to develop life-saving cell and gene therapies, today provided financial results for the fourth quarter and full year 2025, ending December 31, 2025 and provided a business update.

“Lasme-cel demonstrated a potentially transformative efficacy profile in one of oncology’s most challenging settings, achieving 100% overall response rate in the target Phase 2 population. Critically, lasme-cel converted all patients in the target population into transplant-eligible candidates. The pivotal Phase 2 is now enrolling, and with a BLA submission anticipated in 2028, lasme-cel is on a clear regulatory path to potentially becoming the first off-the-shelf CAR-T therapy to address this high unmet medical need” said André Choulika, Ph.D., Co-Founder and Chief Executive Officer of Cellectis. “With interim Phase 2 data for lasme-cel in r/r B-ALL, and full Phase 1 data for eti-cel in r/r NHL, both expected in Q4 2026, we are entering an important year for Cellectis, as we advance our ambition to bring life-saving off-the-shelf CAR-T therapies to patients who have run out of options”.

________________________________1Cash, cash equivalents and fixed-term deposits include restricted cash of $4.4 million as of December 31, 2025 classified as current and non-current financial assets and fixed-term deposits of $144.8 million as of December 31, 2025, classified as current financial assets.

In the target Phase 2 population, the complete response or complete remission with incomplete hematology recovery (CR/Cri) rate was 56%, with approximately 80% of these patients achieving minimum residual disease (MRD)-negative status

The first interim analysis for the pivotal Phase 2 of the BALLI-01 trial is expected in Q4 2026 (n=40). Cellectis anticipates submitting a Biologics License Application (BLA) in 2028.

Key findings:

Key study highlights:

These research results provide a strong framework for the safe development of TALEB in therapeutic cell engineering, supporting their potential for future nuclear and mitochondrial applications.

Cash:As of December 31, 2025, Cellectis had $211 million in consolidated cash, cash equivalents, restricted cash and fixed-term deposits classified as current-financial assets. The Company believes its cash, cash equivalents, and fixed-term deposits will be sufficient to fund its operations into H2 2027.

This compares to $264 million in consolidated cash, cash equivalents, restricted cash and fixed-term deposits classified as current-financial assets as of December 31, 2024. This $53 million change includes $36.9 million of cash-in from our revenue, $8.4 million of interest received from our financial and cash-equivalent investments, $2.2 million cash-in from R&D tax credit, $3.2 million cash-in from VAT credit payments, and a $4.8 million foreign currency translation impact offset by cash payments from Cellectis to suppliers of $50.5 million, Cellectis’ wages, bonuses and social expenses paid of $40.0 million, the payments of lease debts of $10.8 million, the repayment of thePrêt Garanti par l’Etat(PGE) loan for $5.4 million and the payments of capital expenditures for $3.5 million.

We currently foresee focusing our cash spending at Cellectis in supporting the development of our pipeline of product candidates, including the manufacturing and clinical development expenses of lasme-cel, eti-cel and potential new product candidates, and operating our state-of-the-art manufacturing capabilities in Paris (France) and Raleigh (North Carolina).

Revenues and Other Income:Consolidated revenues and other income were $79.6 million for the year ended December 31, 2025 compared to $49.2 million for the year ended December 31, 2024. This $30.4 million increase between the years ended December 31, 2024 and 2025 is mainly driven by the evolution of activities performed in connection with the research plans and fulfillment of our performance obligations under the Joint Research and Collaboration Agreement signed with AstraZeneca. Revenues as recorded in the year ended December 31, 2024 included a $5.4 million development milestone under the License Agreement signed with Servier.

R&D Expenses:Consolidated R&D expenses were $93.5 million for the year ended December 31, 2025, compared to $90.5 million for the year ended December 31, 2024. This $3.0 million increase is mainly due to (i) a $4.2 million increase in personnel expenses driven by an evolution of our R&D headcount consistent with our roadmap, higher fair market value of stock-based compensation instruments due to underlying stock dynamics, and foreign exchange effects; (ii) a $0.3 million increase in depreciation and amortization; compensated by (iii) a $1.5 million decrease in purchases and external expenses.

SG&A Expenses:Consolidated SG&A expenses were $19.8 million for the year ended December 31, 2025 compared to $19.1 million for the year ended December 31, 2024. The $0.7 million change is mainly due to a $0.6 million increase in purchases and external expenses.

Other operating income and expenses:Other operating income and expenses decreased slightly by $0.2 million between the years ended December 31, 2024 and 2025, from $0.8 million in 2024 to $0.6 million in 2025.

Net financial gain (loss):Net financial loss was $34.9 million for the year ended December 31, 2025, compared to a $22.8 million net financial gain for the year ended December 31, 2024. This $57.7 million difference reflects mainly a $28.3 million decrease in financial income and a $29.5 million increase in financial expenses between the years ended December 31, 2024 and 2025.

The decrease in financial income is mainly attributable to (i) a $14.3 million gain in change in fair value of the derivative instrument component of the SIA, which was recorded last year before derecognition of the derivative in May 2024; (ii) a $7.2 million decrease in foreign exchange gains; (iii) a $1.8 million decrease in income from cash, cash equivalents and financial assets in line with the evolution of interest rates in 2025, (iv) a $ 5.7 million gain recognized in the year ended December 31, 2024 on the fair value measurement of the Tranches A, B and C warrants issued to the European Investment Bank ("EIB"), partially offset by (v) a $0.8 million increase in FX derivatives fair value gains.

The increase in financial expenses is mainly attributable to a (i) $22.2 million increase in foreign exchange loss over the period due to the devaluation of the USD against the Euro, (ii) a $14.7 million loss on the fair value measurement of the Tranches A, B and C warrants issued to the EIB, (iii) a $0.7 million increase in interest on our financial and lease liabilities, partially offset by (iv) a $7.8 million decrease in the loss on fair value measurement of our investment in shares of Cibus which was entirely sold in Q1 2025.

Net Income (loss) Attributable to Shareholders of Cellectis:Consolidated net loss attributable to shareholders of Cellectis was $67.6 million (or a $0.67 loss per share) for the year ended December 31, 2025, compared to a $36.8 million loss (or a $0.41 loss per share) for the year ended December 31, 2024. The $30.8 million change in net loss was primarily driven by (i) a $30.4 million increase in revenues and other income, offset by (ii) a $3.9 million increase in operating expenses and other operating income and (iii) a $57.7 million change from a net financial gain of $22.8 million as of December 31, 2024 to a net financial loss of $34.9 million as of December 31, 2025.

Adjusted Net Income (Loss) Attributable to Shareholders of Cellectis:Consolidated adjusted net loss attributable to shareholders of Cellectis was $61.5 million (or a $0.61 loss per share) for the year ended December 31, 2025, compared to a net loss of $33.6 million (or a $0.37 loss per share) for the year ended December 31, 2024.

The year-end consolidated financial statements of Cellectis have been prepared in accordance with International Financial Reporting Standards, as issued by the International Accounting Standards Board (“IFRS”).

Please see "Note Regarding Use of Non-IFRS Financial Measures" for reconciliation of GAAP net income (loss) attributable to shareholders of Cellectis to adjusted net income (loss) attributable to shareholders of Cellectis.

Cellectis S.A. presents adjusted net income (loss) attributable to shareholders of Cellectis in this press release. Adjusted net income (loss) attributable to shareholders of Cellectis is not a measure calculated in accordance with IFRS® Accounting Standards. We have included in this press release a reconciliation of this figure to net income (loss) attributable to shareholders of Cellectis, which is the most directly comparable financial measure calculated in accordance with IFRS Accounting Standards.Because adjusted net income (loss) attributable to shareholders of Cellectis excludes non-cash stock-based compensation expense — a non-cash expense, we believe that this financial measure, when considered together with our IFRS financial statements, can enhance an overall understanding of Cellectis’ financial performance. Moreover, our management views the Company’s operations, and manages its business, based, in part, on this financial measure. In particular, we believe that the elimination of non-cash stock-based expenses from Net income (loss) attributable to shareholders of Cellectis can provide a useful measure for period-to-period comparisons of our core businesses. Our use of adjusted net income (loss) attributable to shareholders of Cellectis has limitations as an analytical tool, and you should not consider it in isolation or as a substitute for analysis of our financial results as reported under IFRS. Some of these limitations are: (a) other companies, including companies in our industry which use similar stock-based compensation, may address the impact of non-cash stock- based compensation expense differently; and (b) other companies may report adjusted net income (loss) attributable to shareholders or similarly titled measures but calculate them differently, which reduces their usefulness as a comparative measure. Because of these and other limitations, you should consider adjusted net income (loss) attributable to shareholders of Cellectis alongside our IFRS financial results, including Net income (loss) attributable to shareholders of Cellectis.

About CellectisCellectis is a clinical-stage biotechnology company using its pioneering gene-editing platform to develop life-saving cell and gene therapies. The company utilizes an allogeneic approach for CAR T immunotherapies in oncology, pioneering the concept of off-the-shelf and ready-to-use gene-edited CAR T-cells to treat cancer patients, and a platform to develop gene therapies in other therapeutic indications. With its in-house manufacturing capabilities, Cellectis is one of the few end-to-end gene editing companies that controls the cell and gene therapy value chain from start to finish.

Cellectis’ headquarters are in Paris, France, with locations in New York and Raleigh, NC. Cellectis is listed on the Nasdaq Global Market (ticker: CLLS) and on Euronext Growth (ticker: ALCLS). To find out more, visitwww.cellectis.comand follow Cellectis onLinkedInandX.

Cautionary StatementThis press release contains “forward-looking” statements within the meaning of applicable securities laws, including the Private Securities Litigation Reform Act of 1995. Forward-looking statements may be identified by words such as ”ambition,” “anticipates,” “anticipated,” “believe,” “can,” “expected,” “expects,” “foresee,” “planned,” “potential,” “potentially,” or “will” or the negative of these and similar expressions. These forward-looking statements are based on our management’s current expectations and assumptions and on information currently available to management, including information provided or otherwise publicly reported by our licensed partners. Forward-looking statements include statements about the potential of the pivotal Phase 2 BALLI-01 trial to be a registrational phase, the advancement, timing and progress of clinical trials (including with respect to patient enrollment and follow-up), the timing of our presentation of data and submission of regulatory filings (including without limitation, the date of BLA submission), the sufficiency of cash to fund operations, the potential benefit of our product candidates and technologies, the outcomes of our collaboration agreement, including with AstraZeneca, Servier, Allogene, and Iovance, and the financial position of Cellectis. These forward-looking statements are made in light of information currently available to us and are subject to significant risks and uncertainties, including with respect to the numerous risks associated with biopharmaceutical product candidate development. Among these are significant risks that the BALLI-01 Phase 1 data may not be validated by data from later stage of clinical trials and that our product candidate may not receive regulatory approval for commercialization. Particular caution should be exercised when interpreting results from Phase 1 studies and results relating to a small number of patients – such results should not be viewed as predictive of future results. With respect to our cash runway, our operating plans, including product development plans, may change as a result of various factors, including factors currently unknown to us. Furthermore, many other important factors, including those described in our Annual Report on Form 20-F as amended and in our annual financial report (including the management report) for the year ended December 31, 2025 and subsequent filings Cellectis makes with the Securities Exchange Commission from time to time, which are available on the SEC’s website atwww.sec.gov, as well as other known and unknown risks and uncertainties may adversely affect such forward-looking statements and cause our actual results, performance or achievements to be materially different from those expressed or implied by the forward-looking statements. Except as required by law, we assume no obligation to update these forward-looking statements publicly, or to update the reasons why actual results could differ materially from those anticipated in the forward-looking statements, even if new information becomes available in the future.

Media contacts:Pascalyne Wilson, Director, Communications, + 33 (0)7 76 99 14 33,media@cellectis.comPatricia Sosa Navarro, Chief of Staff to the CEO, +33 (0)7 76 77 46 93