On January 24, 2023, Micah C. Foster, Vice President and Chief Financial Officer of Natural Gas Services Group, Inc. (the "Company") notified the Company of his decision to resign as an officer of the Company effective February 28, 2023. Mr. Foster's resignation is due to his acceptance of a new full-time position and is not a result of any disagreement with the Company's independent auditors or any member of management on any matter of accounting principles or practices, financial statement disclosures or internal controls.