NATURAL GAS SERVICES GROUP INC 10-Q

Item 5. Other Information On May 16, 2025 , Stephen C. Taylor , a member of our Board of Directors , adopted a Rule 10b5-1 trading agreement that is intended to satisfy the affirmative defense of Rule 10b5-1(c) for the sale of up to an aggregate of 100,000 shares of the Company’s common stock, subject to various volume amounts and price thresholds. The plan becomes effective on August 15, 2025 and terminates on September 30, 2026 , unless sooner terminated under its terms. The 10b5-1 Plan was entered into during an open insider trading window and no sales will commence under the plan until completion of the required cooling off period under Rule 10b5-1. No other director or officer of the Company adopted , modified or terminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” as each term is defined in Item 408(a) of Regulation S-K, during the three months ended June 30, 2025. . 29 Item 6. Exhibits The following exhibits are filed herewith or incorporated herein by reference, as indicated: Exhibit No. Description 4.3 Natural Gas Services Group, Inc. 2019 Equity Incentive Plan, as amended (incorporated by reference to Exhibit 4.3 of the Registrant’s Registration Statement on Form S-8 filed with the Securities and Exchange Commission on June 16, 2025). 10.1 Fourth Amendment to Amended and Restated Credit Agreement dated April 18, 2025 among Natural Gas Services Group, Inc. the other Loan Parties thereto, Texas Capital Bank, in its capacity as Administrative Agent and the Lenders Party thereto. 31.1 * Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 31.2 * Certification of Principal Accounting Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 32.1 ** Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 32.2 ** Certification of Principal Accounting Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 101.INS XBRL Instance Document 101.SCH XBRL Taxonomy Extension Schema Document 101.CAL XBRL Taxonomy Extension Calculation Linkbase Document 101.DEF XBRL Taxonomy Extension Definition Linkbase Document 101.LAB XBRL Taxonomy Extension Label Linkbase Document 101.PRE XBRL Taxonomy Extension Presentation Linkbase Document * Filed herewith. ** Furnished herewith. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. NATURAL GAS SERVICES GROUP, INC. /s/ Justin C. Jacobs /s/ Ian M. Eckert Justin C. Jacobs Ian M. Eckert Chief Executive Officer and Director Chief Financial Officer (Principal Executive Officer) (Principal Accounting Officer) August 11, 2025 August 11, 2025