Power of Attorney for Keros Therapeutics, Inc. - Anne Prener

This filing details a Power of Attorney granted by Anne Prener, a director of Keros Therapeutics, Inc. (KROS), to Jasbir Seehra, Keith Regnante, and Esther Cho. The attorneys-in-fact are authorized to execute and submit Forms 3, 4, and 5 to the SEC on behalf of Ms. Prener, as required by Section 16(a) of the Securities Exchange Act of 1934. This authorization covers the preparation, filing, and any necessary actions related to these forms, including amendments. The Power of Attorney remains effective until Ms. Prener is no longer required to file these forms, until revoked in writing, or until the attorneys-in-fact are no longer employed by the company. The document was signed by Ms. Prener on July 5, 2026, with Esther Cho acting as attorney-in-fact on July 6, 2026.