RTW Investments, LP Discloses New 9.3% Stake in Tango Therapeutics, Inc. (TNGX)

On May 15, 2026, RTW Investments, LP and Roderick Wong, M.D. filed a Schedule 13G reporting a significant new position in Tango Therapeutics, Inc. (TNGX). As of the event date of March 31, 2026, the reporting persons beneficially own 13,300,620 shares of common stock, representing a 9.3% ownership stake in the company. This filing marks an increase from a previously reported 0% position, establishing RTW Investments as a major institutional shareholder. The shares are held directly by various RTW Funds, for which RTW Investments serves as the investment adviser and Dr. Wong serves as the Managing Partner and Chief Investment Officer. The reporting persons share voting and dispositive power over the reported shares. The filing was made under Rule 13d-1(b), certifying that the securities were acquired in the ordinary course of business and not for the purpose of influencing or changing the control of the issuer. The ownership percentage is based on 142,688,851 shares outstanding as of February 26, 2026.