On May 13, 2024, ATI Physical Therapy, Inc. appointed Christopher Thunander to the position of Chief Accounting Officer. In this role, Mr. Thunander will serve as the Company?s Principal Accounting Officer. Previously, Joseph Jordan, the Company?s Chief Financial Officer, served as the Company?s Principal Accounting Officer on an interim basis.

Mr. Thunander previously served as Director of Accounting beginning November 2020, and Vice President, Chief Accounting Officer and Corporate Controller beginning September 2021, of Surgalign Holdings, Inc. (?Surgalign?). In his roles with Surgalign, he was responsible for public company accounting activities, internal controls, external and Securities and Exchange Commission reporting functions, treasury and external audit coordination. Before joining Surgalign, Mr. Thunander spent 13 years at Ernst & Young, an audit firm, where he served in various roles in the Assurance and Audit practice.

Mr. Thunander is a certified public accountant. He received his Masters of Business Administration and Bachelors of Science in Accounting and Finance from the University of Dayton.