The undersigned hereby agree that the statement on Schedule 13G with respect to the Common Stock of Keros Therapeutics, Inc. dated as of May 14, 2025 is, and
any further amendments thereto signed by each of the undersigned shall be, filed on behalf of each of the undersigned pursuant to and in accordance with the provisions of Rule 13d-1(k)(2) under the Securities Exchange Act of 1934, as amended.
MADISON AVENUE INTERNATIONAL LP
By: /s/ Eli Samaha
Eli Samaha, as Manager of Madison Avenue GP, LLC, the General Partner of Madison Avenue International LP
MADISON AVENUE PARTNERS, LP
By: /s/ Eli Samaha
Eli Samaha, as Managing Member of EMAI Management, LLC, the General Partner of Madison Avenue Partners, LP
EMAI MANAGEMENT, LLC
By: /s/ Eli Samaha
Eli Samaha, as Managing Member
MADISON AVENUE GP, LLC
By: /s/ Eli Samaha
Eli Samaha, as Manager
CARAWAY JACKSON INVESTMENTS, LLC
By: /s/ Eli Samaha
Eli Samaha, as Member
/s/ Eli Samaha