NATURAL GAS SERVICES GROUP INC

Except for the risk factor set forth below, there have been no material changes to the risk factors disclosed in Item 1A in our Annual Report on Form 10-K for the fiscal year ended December 31, 2025, as supplemented by the risk factors disclosed in Item 1A in our Quarterly Report on Form 10-Q for the quarter ended June 30, 2026.. We may experience additional risks and uncertainties not currently known to us. Further, as a result of developments occurring in the future, conditions that we currently deem to be immaterial may also materially and adversely affect us. Any such risks may materially and adversely affect our business, financial condition, cash flows, and results of operations.

Risks Related to Cybersecurity

Subsequent to the quarter ended September 30, 2026, the Company identified a cybersecurity incident involving unauthorized access to certain information that included personally identifiable information (“PII”). The Company promptly initiated its incident response protocols, engaged third-party cybersecurity specialists, and continues to evaluate the nature and scope of the incident.

Based on the information currently available, management does not believe the incident has had a material adverse effect on the Company’s operations, financial condition, or results of operations. The Company maintains cybersecurity insurance coverage that management believe substantially mitigates the risk of material loss associated with the incident. Accordingly, as of September 30, 2026, management has concluded that the likelihood of a material loss to the Company is remote and no liability has been recorded in the accompanying financial statements. See the cybersecurity-related risks described in our Annual Report on Form 10-K for the year ended December 31, 2025.