FVE Five Star Senior Living Inc

Five Star Quality Care, Inc. 2001 Stock Option and Stock Incentive Plan

Five Star Quality Care, Inc. 2014 Equity Compensation Plan

Five Star Senior Living Inc. Amended and Restated 2014 Equity Compensation Plan, as amended

AlerisLife Inc. Second Amended and Restated 2014 Equity Compensation Plan

(Full title of the Plans)

Jeffrey C. Leer

President and Chief Executive Officer

Two Newton Place

255 Washington Street, Suite 230

Newton, Massachusetts 02458

(617) 796-8387

(Name, address and telephone number of Agent for Service)

Copies to:

Faiz Ahmad

Skadden, Arps, Slate, Meagher & Flom LLP

One Rodney Square

920 North King Street

Wilmington, DE 19801

(302) 651-3000

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See definitions of “large accelerated filer, “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ¨

DEREGISTRATION OF SECURITIES

These Post-Effective Amendments (these “Post-Effective Amendments”) filed by AlerisLife Inc., a Maryland corporation (the “Registrant”), deregister all shares of the Registrant’s common stock, $0.01 par value per share (the “Shares”), remaining unissued under the following Registration Statements on Form S-8 (each, a “Registration Statement”, and collectively, the “Registration Statements”) filed by the Registrant with the U.S. Securities and Exchange Commission (the “SEC”):

Pursuant to an Agreement and Plan of Merger (the “Merger Agreement”), dated as of February 2, 2023, among the Registrant, ABP Acquisition LLC, a Maryland limited liability company (“Parent”), and ABP Acquisition 2 LLC, a Maryland limited liability company and a wholly owned subsidiary of Parent (“Purchaser”), Purchaser was merged with and into the Registrant (the “Merger”), with the Registrant continuing as the surviving corporation and a wholly owned subsidiary of Parent. The Merger became effective on March 20, 2023.

In connection with the closing of the Merger, the offerings pursuant to the Registration Statements have been terminated. In accordance with undertakings made by the Registrant in the Registration Statements to remove from registration, by means of a post-effective amendment, any of the securities that remain unsold at the termination of the offerings, the Registrant hereby removes from registration all Shares registered under the Registration Statements but not sold under the Registration Statements.

The foregoing description of the Merger, the Merger Agreement and the transactions contemplated thereby does not purport to be complete and is subject to, and qualified in its entirety by, the Merger Agreement, which is attached as Exhibit 2.1 to the Registrant’s Current Report on Form 8-K filed with the SEC on February 3, 2023.