On March 25, 2022, Steve R. Martin notified Armata Pharmaceuticals, Inc. that he intends to retire as Chief Financial Officer and Senior Vice President (and Principal Financial and Accounting Officer) of the Company effective as of June 30, 2022 (the “Transition Date”). On March 25, 2022, the Board appointed Erin Butler to serve as (i) Vice President of Finance and Administration of the Company, effective April 1, 2022, and (ii) Principal Financial and Accounting Officer of the Company, effective July 1, 2022. Prior to her appointment as Vice President of Finance and Administration, Ms. Butler served as the Company's Sr. Director, Corporate Controller since September 2017.