IDEAYA Announces Proposed Public Offering of Common Stock and Pre-Funded Warrants

, /PRNewswire/ -- IDEAYA Biosciences, Inc. (Nasdaq: ) today announced that it intends to offer and sell up to of shares of its common stock and, in lieu of common stock, to offer and sell to certain investors pre-funded warrants to purchase its common stock in an underwritten public offering. In addition, IDEAYA intends to grant the underwriters a 30-day option to purchase up to of shares of its common stock.

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. J.P.

Morgan, Goldman Sachs & Co. LLC, Jefferies and RBC Capital Markets are acting as joint book-running managers for the offering. The securities described above are being offered by IDEAYA pursuant to an automatically effective shelf registration statement on Form S-3 that was previously filed with the U.

S. Securities and Exchange Commission, or the SEC. The offering will be made only by means of a written prospectus and a prospectus supplement that form a part of the registration statement.

A preliminary prospectus supplement and accompanying 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. When available, copies of the preliminary prospectus supplement and the accompanying prospectus relating to these securities may also be obtained by request from: J.P.

Morgan, by mail at J.P. Morgan Securities .