EX-99.1 3 tm2611396d1_ex99-1.htm EXHIBIT 99.1

Exhibit 99.1

JOINT FILING AGREEMENT

The undersigned hereby agree that the Schedule 13D with respect to the common shares of beneficial interest, $.01 par value per share, of Service Properties Trust, dated as of April 9, 2026, is, and any further amendments thereto, signed by each of the undersigned shall be, filed on behalf of each of us pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended.

April 9, 2026

(Date)

THE RMR GROUP LLC

/s/ Matthew C. Brown

(Signature)

Matthew C. Brown, Executive Vice President, Chief Financial Officer and Treasurer

(Name/Title)

THE RMR GROUP INC.

/s/ Matthew C. Brown

(Signature)

Matthew C. Brown, Executive Vice President, Chief Financial Officer and Treasurer

(Name/Title)

ABP TRUST

/s/ Adam D. Portnoy

(Signature)

Adam D. Portnoy, President

(Name/Title)

ADAM D. PORTNOY

/s/ Adam D. Portnoy

(Signature)