INOVIO Reports Fourth Quarter and Full Year 2025 Financial Results and Recent Business Highlights

PLYMOUTH MEETING, Pa.,March 12, 2026/PRNewswire/ -- INOVIO (NASDAQ:INO), a biotechnology company focused on developing and commercializing DNA medicines to help treat and protect people from HPV-related diseases, cancer, and infectious diseases, today announced its financial results for the fourth quarter and full year ended December 31, 2025 and provided an update on recent company developments.

"With our first BLA now under review by the FDA, we are focused on delivering INO-3107 to RRP patients who are desperate for treatment options that reduce reliance on surgery to control this rare and devastating disease," said Dr. Jacqueline Shea, INOVIO's President and Chief Executive Officer. "Our top priority is advancing INO-3107, and to do so, optimizing and extending our financial resources towards our target PDUFA date of October 30, 2026. We are excited about the opportunities ahead as we prepare to become a commercial-stage company and work to leverage the power of partnerships to advance other promising candidates in our pipeline. I look forward to providing more updates on our progress with these efforts in the coming months."

In December 2025, the FDA accepted INOVIO's BLA for INO-3107 for review under the accelerated approval program as a potential treatment for adults with RRP. As part of the submission, INOVIO requested a priority review, which is typically 6 months. Instead, the FDA granted a standard 10-month review with a PDUFA target date set for October 30, 2026.

While the BLA was accepted under the accelerated approval program, in the file acceptance letter the FDA noted as a potential review issue its preliminary conclusion that the company had not provided adequate information to justify eligibility for the accelerated approval pathway. INOVIO continues to strongly believe that INO-3107 fulfills the criteria for accelerated approval, meeting a significant unmet need and providing a meaningful therapeutic benefit over existing treatments. The FDA has agreed to a yet-to-be-scheduled meeting to discuss eligibility for review under the accelerated approval program.

During 2025, INOVIO published clinical and immunological results from its Phase 1/2 trial (RRP-001) inNature Communicationsshowing that INO-3107 induced new populations of T cells in the blood that traveled to airway tissue and were associated with significant clinical benefit as measured by reduced need for surgery. INOVIO also published data from a retrospective study (RRP-002) investigating the long-term safety and clinical response of patients treated with INO-3107 inThe Laryngoscope.Data demonstrated that the majority of patients experienced continued improvement beyond the initial 12-month study period of the previously published Phase 1/2 trial (RRP-001), as measured by a reduction in the number of surgical procedures needed after treatment with INO-3107.

INOVIO also continued to advance commercial readiness plans, including conducting critical market research supporting a positively differentiated product profile, developing a pricing strategy, finalizing our go-to-market model, and advancing the build-out of our commercial organization. We've also selected key commercial partners including a third-party logistics provider, Agency of Record, specialty distributor, specialty pharmacy, and patient HUB.

INOVIO announced a clinical trial collaboration and supply agreement with Akeso Inc. to evaluate INO-5412 (INO-5401 plus INO-9012 in a single vial) in combination with cadonilimab, Akeso's first-in-class PD-1/CTLA-4 bispecific antibody, for the potential treatment of GBM. The combination therapy will be studied as a part of the INdividualized Screening trial of Innovative Glioblastoma Therapy (INSIGhT), the innovative Phase 2 adaptive platform trial sponsored by the Dana-Farber Cancer Institute and conducted by Mass General Brigham Cancer Care Inc. that is designed to quickly and efficiently find new treatments for GBM. The novel combination of INO-5412 with cadonilimab builds on INOVIO's previous promising research in GBM and could potentially benefit patients by providing additional checkpoint inhibition through CTLA-4 binding.

INOVIO also continues to dose patients in the GBM-001 Phase 1/2 trial in newly diagnosed glioblastoma that combines INO-5401 plus INO-9012 with Regeneron's PD-1 checkpoint inhibitor Libtayo®.

INOVIO's partners at the Basser Center at the University of Pennsylvania continue to evaluate the tolerability and immunogenicity of INO-5401 plus INO-9012 in a Phase 1 study exploring the potential to prevent cancer in people with BRCA1 or BRCA2 mutations.

Results from a Phase 1 proof-of-concept trial evaluating next generation DMAbs for COVID-19 were published online inNature Medicine,demonstrating the technology's potential as a long-acting, scalable and tolerable alternative to traditional monoclonal antibody therapies. The study is being led by The Wistar Institute in collaboration with INOVIO, AstraZeneca, and clinical investigators at the Perelman School of Medicine at the University of Pennsylvania. This was the first demonstration that DNA plasmid encoded monoclonal antibodies, which are complex proteins, can be durably and tolerably expressed in humans.

INOVIO also presented promising Factor VIII preclinical data from its DPROT program at the World Federation of Hemophilia Global Forum in November 2025. This technology aims to address some of the shortcomings of conventional therapeutic protein replacement treatments, including gene therapy approaches. INOVIO is developing additional DPROT indications and is actively seeking partners to accelerate development of this promising program.

INOVIO remains focused on financial discipline, directing resources to advance the INO-3107 program towards commercialization and a potential approval date in October 2026, and extending the cash runway. To achieve this goal, INOVIO has further prioritized programs, spending, and resource needs, and has eliminated roles that don't directly support our primary goal of advancing INO-3107 toward US approval.

INOVIO's balance sheet and statement of operations are provided below. Additional information is included in INOVIO's annual report on Form 10-K for the year ended December 31, 2025, which can be accessed at:http://ir.inovio.com/financials/default.aspx.

Cash GuidanceINOVIO estimates its current cash, cash equivalents and short-term investments balances to support the company's operations into the fourth quarter of 2026. This projection includes an operational net cash burn estimate of approximately $22 million for the first quarter of 2026. These cash runway projections do not include any further capital-raising activities that INOVIO may undertake.

INOVIO's management will host a live conference call and webcast with slides at 4:30 p.m. ET today to discuss INOVIO's financial results and provide a general business update. The live webcast and replay may be accessed by visiting INOVIO's website athttp://ir.inovio.com/events-and-presentations/default.aspx.

INOVIO's DNA medicines platform has two innovative components: precisely designed DNA plasmids, delivered by INOVIO's proprietary investigational medical device, CELLECTRA. INOVIO uses proprietary technology to design its DNA plasmids, which are small circular DNA molecules that work like software the body's cells can download to produce specific proteins to target and fight disease. INOVIO's proprietary CELLECTRA delivery devices are designed to optimally deliver its DNA medicines to the body's cells without requiring chemical adjuvants or lipid nanoparticles and without the risk of the anti-vector response historically seen with viral vector platforms.

INOVIO is a biotechnology company focused on developing and commercializing DNA medicines to help treat and protect people from HPV-related diseases, cancer, and infectious diseases. INOVIO's technology optimizes the design and delivery of innovative DNA medicines that teach the body to manufacture its own disease-fighting tools. For more information, visitwww.inovio.com.

This press release contains certain forward-looking statements relating to our business, including the timing and success of preclinical studies and clinical trials; the ability to obtain and maintain regulatory approval of our product candidates; the FDA's acceptance of our BLA for INO-3107 with a PDUFA target action date set for October 30, 2026; and yet-to-be scheduled meeting with the FDA to discuss eligibility for the accelerated approval program; the potential benefits of INO-3107; and our other potential product candidates; the clinical collaboration and supply agreement with Akeso Inc. to evaluate INO-5412 in combination with cadonilimab for the potential treatment of GBM in the INSIGhT trial; the scope, progress and expansion of developing and commercializing our product candidates; our anticipated growth strategies; our ability to establish and maintain development partnerships and the expected sufficiency of our cash resources into the fourth quarter of 2026. Actual events or results may differ from the expectations set forth herein as a result of a number of factors, including uncertainties inherent in pre-clinical studies, clinical trials, product development programs and commercialization activities and outcomes, the availability of funding to support continuing research and studies in an effort to prove safety and efficacy of electroporation technology as a delivery mechanism or develop viable DNA medicines, our ability to support our pipeline of DNA medicine products, the ability of our collaborators to attain development and commercial milestones for products we license and product sales that will enable us to receive future payments and royalties, the adequacy of our capital resources, the availability or potential availability of alternative therapies or treatments for the conditions targeted by us or collaborators, including alternatives that may be more efficacious or cost effective than any therapy or treatment that we and our collaborators hope to develop, issues involving product liability, issues involving patents and whether they or licenses to them will provide us with meaningful protection from others using the covered technologies, whether such proprietary rights are enforceable or defensible or infringe orallegedlyinfringe on rights of others or can withstand claims of invalidity and whether we can finance or devote other significant resources that may be necessary to prosecute, protect or defend them, the level of corporate expenditures, assessments of our technology by potential corporate or other partners or collaborators, capital market conditions, the impact of government healthcare proposals and other factors set forth in our Annual Report on Form 10-K for the year ended December 31, 2025 and other filings we make from time to time with the Securities and Exchange Commission. There can be no assurance that any product candidate in our pipeline will be successfully developed, manufactured, or commercialized, that the results of clinical trials will be supportive of regulatory approvals required to market products, or that any of the forward-looking information provided herein will be proven accurate. Forward-looking statements speak only as of the date of this release, and we undertake no obligation to update or revise these statements, except as may be required by law.

Media: Jennie Willson, (267) 429-8567,[email protected]Investors: Peter Vozzo - ICR Healthcare, (443) 213-0505,[email protected]

SOURCE INOVIO Pharmaceuticals, Inc.