FENNEC PHARMACEUTICALS ANNOUNCES PROPOSED OFFERING OF COMMON SHARES (Form 8-K)

FENNEC PHARMACEUTICALS ANNOUNCES PROPOSED OFFERING OF COMMON SHARES

Research Triangle Park, NC, November 13, 2025 - Fennec Pharmaceuticals Inc. (NASDAQ:FENC) (TSX:FRX) ("Fennec" or the "Company"), a specialty pharmaceutical company, today announced that it intends to offer and sell its common shares in an underwritten registered public offering. In addition, Fennec intends to grant the underwriters a 30-day option to purchase up to an additional 15% of its common shares sold in the public offering.

Fennec intends to use the net proceeds of the proposed offering to repurchase and redeem certain indebtedness and the remaining net proceeds, if any, for working capital and general corporate purposes.

Piper Sandler & Co. and Craig-Hallum Capital Group LLC are acting as the joint book-running managers for the proposed public offering.

The common shares are being offered by the Company pursuant to a registration statement previously filed with and declared effective by the Securities and Exchange Commission (the "SEC"). A preliminary prospectus supplement and an accompanying prospectus relating to the offering will be filed with the SEC and will be available on the SEC's website located at http://www.sec.gov. Copies of the preliminary prospectus supplement and the accompanying prospectus, when filed with the SEC, may also be obtained from Piper Sandler & Co., Attention: Prospectus Department, 350 North 5th Street, Suite 1000, Minneapolis, Minnesota 55401, by telephone at (800) 747-3924 or by email at [email protected] and Craig-Hallum Capital Group LLC, Attention: Equity Capital Markets, 323 North Washington Ave., Minneapolis, MN 55401, by telephone at (612) 334-6300 or by email at [email protected].