X0508 4 2025-06-05 0 0001084991 NATURAL GAS SERVICES GROUP INC NGS 0001562099 Gallegos John A. Jr. 952 ECHO LANE SUITE 460 HOUSTON TX 77024 1 0 0 0 0 Restricted Stock Units 2025-06-05 4 A 0 4456 0 A Common Stock 4456 4456 D Restricted Stock Units Common Stock 889 889 D Not applicable. Each Restricted Stock Unit represents the right to receive one share of the Issuer's common stock upon vesting. Not Applicable. The acquisition reflects an award of Restricted Stock Units pursuant to the Company's 2019 Equity Incentive Plan. The award vests on the first anniversary of the grant date, subject to accelerated vesting under certain circumstances. John A. Gallegos, Jr. 2025-06-09