Bolt Biotherapeutics Announces Closing of Initial Public Offering and Full Exercise of the Underwriters’ Option to Purchase...

Bolt Biotherapeutics, Inc. (Nasdaq: BOLT), a clinical-stage immuno-oncology company, announced today the closing of its initial public offering of 13,225,000 shares of its common stock, inclusive of the full exercise by the underwriters of their option to purchase 1,725,000 shares of common stock, at a price to the public of $20.00 per share. The shares are listed for trading on The Nasdaq Global Select Market under the ticker symbol “BOLT”.

Morgan Stanley, SVB Leerink, Stifel and Guggenheim Securities acted as joint bookrunners for the offering.

The offering was made only by means of a prospectus. Copies of the final prospectus relating to the offering may be obtained from Morgan Stanley & Co. LLC, Attention: Prospectus Department, 180 Varick Street, 2nd Floor, New York, NY 10014, or by email at [e-mail]; or SVB Leerink LLC, Attention: Syndicate Department, One Federal Street, 37th Floor, Boston, MA 02110, or by telephone at [phone], ext. 6105 or by email at [e-mail].

Registration statements relating to these securities have been filed with, and declared effective by, the Securities and Exchange Commission. This press release shall not constitute an offer to sell or the solicitation of an offer to buy, 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 registration or qualification under the securities laws of any such state or jurisdiction.

About Bolt Biotherapeutics, Inc.

Bolt Biotherapeutics, Inc. (“Bolt”) is a clinical-stage immuno-oncology company developing tumor-targeted therapies that leverage the power of the innate and adaptive immune systems. Bolt’s proprietary Boltbody™ Immune-stimulating Antibody Conjugates (ISACs) approach uses immunostimulants to engage and activate myeloid cells that directly kill tumor cells. This leads to the conversion of immunologically “cold” tumors to “hot” tumors. Bolt’s lead candidate, BDC-1001, is a Boltbody ISAC comprised of a HER2-targeting biosimilar of trastuzumab conjugated to one of Bolt’s proprietary TLR7/8 agonists for the treatment of patients with HER2-expressing solid tumors. Bolt is also advancing additional Boltbody ISAC product candidates targeting CEA and PD-L1.

Media Contacts: Maggie Beller or David SchullRusso Partners, [e-mail] [e-mail]

Investor Relations Contact: Sarah McCabeStern Investor Relations, [e-mail]