Amendment and Partial Termination of Amended and Restated Master Management Agreement, dated as of

THIS AMENDMENT AND PARTIAL TERMINATION OF AMENDED AND RESTATED MASTER MANAGEMENT AGREEMENT (this “Amendment”) is executed and delivered as of December 1, 2024 (the “Effective Date”), by and among AlerisLife Inc. (“Aleris”), a Maryland corporation, FVE Managers, Inc. (“Manager”), a Maryland corporation and subsidiary of Aleris, Diversified Healthcare Trust (“DHC”), a Maryland real estate investment trust, and the parties listed on the signature page hereof as owners (each, an “Owner” and, collectively, “Owners”).

WHEREAS, Aleris (formerly known as Five Star Senior Living Inc.), Manager, DHC, and Owners are parties to that certain Amended and Restated Master Management Agreement, dated as of June 9, 2021, as amended (the “Master Management Agreement”), pursuant to which Manager currently manages certain senior living communities on behalf of Owners; and

WHEREAS, the Community (this and other capitalized terms used but not otherwise defined herein having the meanings given such terms in the Master Management Agreement) known as Morningside of Belmont located at 1710 Magnolia Boulevard, Nashville, TN 37212 (the “Terminated Community”) has closed and the parties desire to terminate the Term of the Master Management Agreement with respect to the Terminated Community.

NOW, THEREFORE, in consideration of the mutual covenants herein contained and other good and valuable consideration, the mutual receipt and legal sufficiency of which are hereby acknowledged, the parties hereby agree, effective from and after the Effective Date, that the Master Management Agreement is hereby amended as follows:

1.Termination. The Term of the Master Management Agreement is terminated with respect to the Terminated Community as of the Effective Date. No parties shall have any further rights or obligations under the Master Management Agreement with respect to the Terminated Community, except for those rights and obligations which by their terms survive expiration or earlier termination of the Term of the Master Management Agreement.

2.Release. Pursuant to Section 18.01 of the Master Management Agreement, Manager is hereby released from all obligations under the Master Management Agreement relating to the Terminated Community with respect to periods from and after the Effective Date, and SNH TENN Tenant LLC is hereby released from all obligations under the Master Management Agreement with respect to periods from and after the Effective Date.

3.Exhibit A. Exhibit A to the Master Management Agreement is amended and restated by Exhibit A attached hereto and made a part hereof.

4.Counterparts. This Amendment may be executed in multiple counterparts, including by electronic signature or DocuSign, each of which shall constitute an original instrument but all of which shall constitute one and the same agreement.

5.Ratification. As partially terminated and amended hereby, the Master Management Agreement is hereby ratified and confirmed.

IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be executed under seal by their duly authorized officers, all as of the Effective Date.

ALERISLIFE INC., and
FVE MANAGERS, INC.

By:     /s/ Jeffrey Leer            
Name: Jeffrey Leer
Title: President of each of the foregoing entities

DIVERSIFIED HEALTHCARE TRUST

By:     /s/ Matthew C. Brown            
Name: Matthew C. Brown
Title: Chief Financial Officer and Treasurer

OWNERS:

SNH AL AIMO TENANT, INC.,
SNH AL CRIMSON TENANT INC.,
SNH AL GEORGIA TENANT LLC,
SNH AL TRS, INC.,
SNH AL WILMINGTON TENANT INC.,
SNH AZ TENANT LLC,
SNH BAMA TENANT LLC,
SNH BRFL TENANT LLC,
SNH CAL TENANT LLC,
SNH CCMD TENANT LLC,
SNH DEL TENANT LLC,
SNH DERBY TENANT LLC,
SNH FLA TENANT LLC,
SNH GEORGIA TENANT LLC,
SNH GRANITE GATE LANDS TENANT LLC,

SNH GRANITE GATE TENANT LLC,
SNH GROVE PARK TENANT LLC,
SNH INDY TENANT LLC,
SNH LINCOLN TENANT LLC,
SNH LONGHORN TENANT LLC,
SNH MASS TENANT LLC,
SNH MD TENANT LLC,
SNH MO TENANT LLC,
SNH NC TENANT LLC,
SNH NJ TENANT LLC,
SNH NM TENANT LLC,

SNH NORTHWOODS TENANT LLC
SNH OHIO TENANT LLC,
SNH PARK PLACE TENANT I LLC,
SNH PARK PLACE TENANT II LLC,
SNH PENN TENANT LLC,
SNH PLFL TENANT LLC,
SNH SC TENANT LLC,
SNH SE BARRINGTON BOYNTON TENANT LLC,
SNH SE BURLINGTON TENANT LLC,
SNH SE HOLLY HILL TENANT LLC,
SNH SE SG TENANT LLC,

SNH SE TENANT TRS, INC.,
SNH TEANECK TENANT LLC,
SNH TELLICO TENANT LLC,
SNH TENN TENANT LLC,
SNH TOTO TENANT LLC,
SNH VA TENANT LLC,
SNH VIKING TENANT LLC,
SNH WIS TENANT LLC, and
SNH YONKERS TENANT INC.

By:     /s/ Matthew C. Brown            
Name: Matthew C. Brown
Title: Chief Financial Officer and Treasurer of each

of the foregoing entities