Sutro Biopharma Announces Proposed Public Offering of 5 Million Shares of Common Stock

On December 7, 2020 Sutro Biopharma, Inc. (Nasdaq: STRO), a clinical-stage drug discovery, development and manufacturing company focused on the application of precise protein engineering and rational design to create next-generation cancer and autoimmune therapeutics, reported a proposed underwritten public offering in which it intends to offer and sell 5,000,000 shares of its common stock (Press release, Sutro Biopharma, DEC 7, 2020, View Source [SID1234572382]). In addition, Sutro intends to grant the underwriters a 30-day option to purchase up to an additional 750,000 shares of common stock offered in the public offering. All of the shares of common stock are being offered by Sutro. The offering is subject to market and other conditions, and there can be no assurance as to whether or when the offering may be completed, or as to the actual size or terms of the offering.

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Cowen, Piper Sandler and Wells Fargo Securities are acting as joint book-running managers in the offering. Wedbush PacGrow and JMP Securities are acting as co-managers for the offering.

Sutro intends to use the net proceeds from the proposed offering, together with its existing cash, cash equivalents and marketable securities, to fund the continued clinical development of STRO-001 and STRO-002 and the remainder to fund the further development of its technology platform, including manufacturing, to broaden its pipeline of product candidates, and for working capital and general corporate purposes.

The shares are being offered by Sutro pursuant to a registration statement on Form S-3 previously filed and declared effective by the Securities and Exchange Commission (SEC). A preliminary prospectus supplement and accompanying prospectus relating to this offering will be filed with the SEC. When available, copies of the preliminary prospectus supplement and the accompanying prospectus relating to this offering may be obtained from: Cowen and Company, LLC, c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, New York 11717, Attn: Prospectus Department, by telephone at (833) 297-2926, or by email at [email protected]; Piper Sandler & Co., Attention: Prospectus Department, 800 Nicollet Mall, J12S03, Minneapolis, Minnesota 55402, by telephone at (800) 747-3924, or by email at [email protected]; or Wells Fargo Securities, LLC, Attention: Equity Syndicate Department, 500 West 33rd Street, New York, New York 10001, by telephone at (800) 326-5897, or by email at [email protected]. Electronic copies of the preliminary prospectus supplement and accompanying prospectus will also be available on the website of the SEC at View Source

This press release shall not constitute an offer to sell or the solicitation of an offer to buy any securities of Sutro, 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.