Population Health Investment (PHIC) SC 13G/APopulation Health Investment / MAVERICK CAPITAL ownership change

EXHIBIT A

JOINT FILING AGREEMENT

The undersigned hereby agree that the statement on Schedule 13G with respect to the Class A Ordinary Shares, $0.0001 par value per share of Population Health Investment Co., Inc., dated as of February 14, 2022, is, and any amendments thereto (including amendments on Schedule 13D) 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.