On March 19, 2023, Kristen Miranda notified Inogen, Inc. of her resignation as a member of the Board of Directors of the Company, the Compliance Committee of the Board, and the Nominating and Governance Committee of the Board, in each case effective as of March 31, 2023. Ms. Miranda's resignation is not the result of any disagreement with the Company relating to the Company's operations, policies or practices. On March 21, 2023, the Board, upon recommendation of the Nominating and Governance Committee, appointed Thomas A. West to the Board, effective April 1, 2023.

Mr. West will serve as a Class III director, with a term expiring at the annual meeting of stockholders to be held in 2023. In addition, the Board appointed Mr. West as a member of the Nominating and Governance Committee and the Compliance Committee, in each case also effective as of April 1, 2023. Mr. West, 59, serves as the President and Chief Executive Officer and is an executive Director of the Board of Nalu Medical, Inc., a privately held medical device company focused on neurostimulation to treat chronic intractable pain.

He joined Nalu in August 2022. Before joining Nalu, Mr. West served from 2019 to 2022 as President, Chief Executive Officer and Director at Intersect ENT, Inc., a publicly traded medical device and drug delivery company in the sinus surgery space. Intersect ENT was acquired by Medtronic in May of 2022.

Prior to Intersect, Mr. West served as Worldwide President, Diagnostic Solutions at Hologic, Inc., a medical technology company, from 2015 to 2019. Mr. West began his healthcare career at Johnson & Johnson where he assumed roles of increasing responsibility over a twenty-three-year tenure including Worldwide President of Strategy and Business Development for the Johnson & Johnson Family of Diabetes Solutions Companies, Division President of LifeScan North America and Division President of LifeScan Europe, Middle East and Africa. Mr. West was an independent member of the Board of Directors of Orthofix Medical, Inc. from 2021 to 2023.

He has also previously been a member of the Board of Directors medical technology trade associations, AdvaMed and Biocom California. Mr. West received a B.A. in Politics and Economics from Princeton University and an MBA from the University of Pennsylvania, Wharton School.