On June 8, 2026 Tango Therapeutics, Inc. ("Tango") (Nasdaq: TNGX), a clinical-stage biotechnology company committed to discovering and delivering the next generation of precision cancer medicines, reported the launch of an underwritten public offering (the "Offering") of $500 million of its common stock. All shares of common stock to be sold in the Offering will be offered by Tango. Tango also intends to grant the underwriters a 30-day option to purchase up to an additional $75,000,000 of shares of its common stock offered in the Offering under the same terms and conditions. The Offering is subject to market conditions, and there can be no assurance as to whether or when the Offering may be completed, or the actual size or terms of the Offering.

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J.P. Morgan, Leerink Partners, Cantor and Stifel are acting as joint bookrunning managers for the offering.

The Offering is being made pursuant to an effective shelf registration statement that was previously filed with the U.S. Securities and Exchange Commission (the "SEC"). The prospectus supplement, accompanying prospectus and any free writing prospectus relating to the Offering will be filed with the SEC and will be available on the SEC’s website at www.sec.gov. Copies of the prospectus supplement, accompanying prospectus and any free writing prospectus relating to the Offering may also be obtained, when available, by contacting: J.P. Morgan Securities LLC, c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717, or by email at [email protected] and [email protected]; Leerink Partners LLC, Attention: Syndicate Department, 53 State Street, 40th Floor, Boston, Massachusetts 02109; by telephone at (800) 808-7525 ext. 6105; or by email at [email protected]; Cantor Fitzgerald & Co., Attention: Capital Markets, 110 East 59th Street, 6th Floor, New York, NY 10022, or by e-mail at [email protected]; and Stifel, Nicolaus & Company, Incorporated, Attention: Syndicate, One Montgomery Street, Suite 3700, San Francisco, CA 94104, or by telephone at (415) 364-2720, or by email at [email protected].

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

(Press release, Tango Therapeutics, JUN 8, 2026, View Source [SID1234666499])