Jade Biosciences, Inc. ("Jade" or the "Company") (NASDAQ:JBIO), a clinical-stage biotechnology company focused on developing best-in-class therapies for autoimmune diseases, today announced that it intends to offer and sell, subject to market and other conditions, shares of its common stock or, in lieu of common stock to certain investors that so choose, pre-funded warrants to purchase shares of its common stock, in a proposed underwritten public offering. All of the shares of common stock and pre-funded warrants to be sold in the proposed offering are being offered by Jade. In addition, Jade intends to grant the underwriters a 30-day option to purchase up to an additional 15% of the securities offered in the public offering, at the public offering price, less underwriting discounts and commissions. There can be no assurance as to whether or when the proposed public offering may be completed, or as to the actual size or terms of the proposed offering.