Advantage Solutions Inc. filed a Current Report on Form 8-K with the U.S. Securities and Exchange Commission on October 15, 2026, announcing that its Board of Directors has approved and adopted the Fourth Amended and Restated Bylaws of the Company.

The filing states that the new bylaws amend and restate the Company’s Third Amended and Restated Bylaws in their entirety. The Fourth Amended and Restated Bylaws include three primary changes:

A copy of the Fourth Amended and Restated Bylaws is attached to the filing as Exhibit 3.1.