Inovio Pharmaceuticals, Inc. (Nasdaq: INO) announced a USD 17.5 million underwritten public offering on April 2, 2026, seeking to extend its cash runway as the Pennsylvania-based company advances a pipeline spanning HPV-related diseases, oncology, and infectious diseases. The capital raise comes as Inovio works toward a potential first commercial product in INO-3107 for recurrent respiratory papillomatosis, a rare HPV-driven disease for which a Biologics License Application (BLA) is under FDA review under the Accelerated Approval Program.
The offering comprises 12,500,000 shares of common stock at a combined public offering price of USD 1.40 per share, accompanied by Series A warrants to purchase up to 12,500,000 shares and Series B warrants to purchase up to 12,500,000 shares, each with an exercise price of USD 1.40 per share. Pre-funded warrants are available in lieu of common stock for investors who would otherwise exceed beneficial ownership thresholds. Inovio also granted the sole underwriter, Piper Sandler, a 30-day option to purchase up to 1,875,000 additional shares of common stock along with corresponding Series A and Series B warrants at the public offering price, less underwriting discounts and commissions. The offering was expected to close on or about April 6, 2026, subject to customary closing conditions.
Company overview and pipeline
Inovio is focused on developing and commercializing DNA medicines for HPV-related diseases, cancer, and infectious diseases. Its platform centers on optimizing the design and delivery of DNA-based constructs intended to instruct the body to produce its own immune responses against disease targets, administered using electroporation delivery devices such as the CELLECTRA system.
The nearest-term commercial catalyst is INO-3107, a DNA immunotherapy targeting recurrent respiratory papillomatosis caused by HPV types 6 and 11. Inovio submitted a BLA for INO-3107 under the US FDA’s Accelerated Approval Program with acceptance confirmed in 2025, though the US FDA flagged a potential review issue citing insufficient information to support accelerated approval eligibility. The FDA assigned INO-3107 a PDUFA goal date of October 30, 2026, as per a company press release.
In oncology, VGX-3100, a DNA immunotherapy targeting HPV16/18-related cervical high-grade squamous intraepithelial lesions, is under development in China via license to ApolloBio, currently Phase III stage, however, Inovio ended US development in 2023. INO-5401, a DNA cancer immunotherapy, is being evaluated in combination with INO-9012 and the PD-1 inhibitor cemiplimab alongside radiation and temozolomide in newly diagnosed glioblastoma multiforme in a Phase I/II study listed as active but not recruiting. INO-5401 is also under evaluation in a separate Phase I study in BRCA1/2 mutation carriers.
On the business development front, Inovio entered a clinical collaboration and supply agreement with Coherus BioSciences in January 2024 to evaluate INO-3112 in combination with Loqtorzi (toripalimab-tpzi), Coherus’s FDA-approved PD-1 inhibitor, in a planned Phase III trial targeting locoregionally advanced HPV16/18-positive oropharyngeal squamous cell carcinoma across North America and Europe.
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