HCW Biologics Inc. (the "Company"), (NASDAQ:HCWB), a U.S.-based clinical-stage biopharmaceutical company focused on discovering and developing innovative immunotherapies to extend health span by targeting the link between chronic inflammation and disease, today announced the pricing of its follow-on offering of an aggregate of 2,477,292 units at a purchase price of $0.6055 per unit priced at-the-market under Nasdaq rules. Each unit consists of one share of common stock (or pre-funded warrant in lieu thereof) and one warrant, each to purchase one share of common stock. The warrant will have an exercise price of $0.6055 per share, will be exercisable upon shareholder approval, and will expire on the five-year anniversary from such date of shareholder approval. The shares of common stock (or pre-funded warrants) and the warrant comprising the units are immediately separable and will be issued separately in this offering. The closing of the offering is expected to occur on or about February 19, 2026, subject to the satisfaction of customary closing conditions.

Maxim Group LLC is acting as the sole placement agent for the offering.

The gross proceeds from the offering, before deducting the placement agent's fees and other offering expenses, are expected to be approximately $1.5 million. The Company intends to use the net proceeds from this offering for funding preclinical and clinical development, including the clinical trials for HCW9302, and general corporate purposes.

In addition, the Company has entered into a privately negotiated agreement with the holder of certain existing outstanding warrants to purchase up to 3,020,410 shares of common stock (the "Existing Warrants") to reduce the exercise price of such Existing Warrants from $2.41 per share to $0.6055 per share. The reduction of the exercise price of the Existing Warrants is subject to shareholder approval.