On July 31, 2026 Moleculin Biotech, Inc., (Nasdaq: MBRX) ("Moleculin" or the "Company"), reported the pricing of a best-efforts public offering of an aggregate of 12,376,667 shares of common stock (or pre-funded warrants in lieu thereof), and warrants (the "Common Warrants") to purchase up to 37,130,001 shares of common stock at a combined public offering price of $0.75 per share of common stock (or pre-funded warrant in lieu thereof) and associated warrants. The Common Warrants will be immediately exercisable at an exercise price of $0.75 per share and will expire five years following the initial exercise date. The offering is expected to close on or about August 3, 2026, subject to satisfaction of customary closing conditions.

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The Company intends to use the net proceeds of the offering to advance Annamycin through clinical development and for working capital.

Roth Capital Partners is acting as exclusive placement agent for the offering. Maxim Group LLC is acting as financial advisor to the Company.

The securities described above are being offered by the Company pursuant to a registration statement on Form S-1 (File No. 333-297776) originally filed July 29, 2026 with the Securities and Exchange Commission ("SEC") and declared effective by the SEC on July 31, 2026. The offering is being made only by means of a prospectus forming part of the effective registration statement relating to the offering. A final prospectus relating to and describing the terms of the offering will be filed with the SEC and will be available on the SEC’s website at View Source Electronic copies of the final prospectus may be obtained, when available, from Roth Capital Partners, LLC at 888 San Clemente Drive, Suite 400, Newport Beach, CA 92660, Attn: Prospectus Department, telephone: 800-678-9147 or by email at [email protected].

This press release shall not constitute an offer to sell or a 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 other 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.

(Press release, Moleculin, JUL 31, 2026, View Source [SID1234669575])