On September 26, 2025 Soligenix, Inc. (Nasdaq: SNGX) ("Soligenix" or the "Company"), a late-stage biopharmaceutical company focused on developing and commercializing products to treat rare diseases where there is an unmet medical need, reported the pricing of its "reasonable best efforts" public offering with existing and certain healthcare focused institutional investors for the purchase and sale of 5,555,560 shares of common stock of the Company (or common stock equivalents in lieu thereof) and warrants to purchase up to 5,555,560 shares of common stock at a combined purchase price of $1.35 per share and accompanying warrant (the "Offering") (Press release, Soligenix, SEP 26, 2025, View Source [SID1234656278]). The warrants will have an exercise price of $1.35 per share, will be exercisable immediately and will expire five years from the issuance date.

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The Company also has agreed that certain existing May 2023, April 2024 and July 2024 warrants (together, the "Existing Warrants") to purchase an aggregate of 1,162,064 shares of common stock will be amended such that the Existing Warrants will have a reduced exercise price of $1.35 per share and shall expire commensurate with the warrants sold in the Offering.

The closing of the Offering is expected to occur on or about September 29, 2025, subject to the satisfaction of customary closing conditions. The gross proceeds from the Offering are expected to be approximately $7.5 million, before deducting placement agent fees and other estimated Offering expenses. The Company intends to use the net proceeds of this Offering to fund research and development and commercialization activities, working capital and general corporate purposes.

A.G.P./Alliance Global Partners is acting as the sole placement agent in connection with the Offering.

The securities described above are being offered pursuant to a registration statement on Form S-1 (File No. 333-290413), previously filed with the Securities and Exchange Commission ("SEC") on September 19, 2025, which became effective on September 25, 2025. The Offering is being made only by means of a prospectus forming part of the effective registration statement. A preliminary prospectus relating to the Offering has been filed with the SEC. An electronic copy of the final prospectus will be filed with the SEC and may be obtained, when available, on the SEC’s website located at View Source and may also be obtained from A.G.P./Alliance Global Partners, 590 Madison Avenue, 28th Floor, New York, NY 10022, or by telephone at (212) 624-2060, or by e-mail at [email protected].

This press release shall not constitute an offer to sell or the solicitation of an offer to buy any of the securities described herein, nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation, or sale would be unlawful prior to the registration or qualification under the securities laws of any such state or other jurisdiction.