NGS

NATURAL GAS SERVICES GROUP INC

Oil & Gas Field Services, NECNYSEAccelerated filer<br>Smaller reporting company

Total Trades

35

Buys

4

Sells

31

Largest Trade

$1M+

Insiders

6

Institutional Funds

99

Inst. Value

$1M+

Activist Filings

23

Insider Trades

InsiderTitleTypeValueSharesPriceDate
Taylor Stephen CharlesDirectorSELL$500K+20K$33.35Dec 12, 2025
HOLLEY JEAN KDirectorBUY$50K–$100K2K$32.04Dec 10, 2025
HOLLEY JEAN KDirectorBUY$15K–$50K935$32.00Dec 9, 2025
Taylor Stephen CharlesDirectorSELL$500K+20K$32.12Dec 5, 2025
Taylor Stephen CharlesDirectorSELL$500K+20K$30.84Nov 20, 2025
Taylor Stephen CharlesDirectorSELL$100K–$500K10K$31.01Nov 18, 2025
Taylor Stephen CharlesDirectorSELL$500K+19K$29.77Nov 12, 2025
Taylor Stephen CharlesDirectorSELL$100K–$500K11K$29.06Nov 7, 2025
Taylor Stephen CharlesDirectorSELL$100K–$500K8K$28.50Sep 26, 2025
Taylor Stephen CharlesDirectorSELL$15K–$50K759$28.50Sep 25, 2025
Taylor Stephen CharlesDirectorSELL$15K–$50K1K$28.50Sep 24, 2025
Taylor Stephen CharlesDirectorSELL$100K–$500K11K$27.95Sep 23, 2025
Taylor Stephen CharlesDirectorSELL$1K–$15K63$27.50Sep 19, 2025
Taylor Stephen CharlesDirectorSELL$15K–$50K2K$27.50Sep 18, 2025
Taylor Stephen CharlesDirectorSELL$100K–$500K7K$27.51Sep 17, 2025
Taylor Stephen CharlesDirectorSELL$1K–$15K289$27.50Sep 16, 2025
Taylor Stephen CharlesDirectorSELL$100K–$500K10K$27.00Sep 4, 2025
HOLLEY JEAN KDirectorBUY$50K–$100K4K$26.58Sep 4, 2025
Taylor Stephen CharlesDirectorSELL$500K+25K$24.90May 16, 2025
Taylor Stephen CharlesDirectorSELL$500K+19K$28.80Jan 22, 2025
Taylor Stephen CharlesDirectorSELL$100K–$500K11K$28.03Nov 26, 2024
Taylor Stephen CharlesDirectorSELL$1M+47K$26.67Nov 21, 2024
Taylor Stephen CharlesDirectorSELL$100K–$500K13K$25.13Nov 18, 2024
Taylor Stephen CharlesDirectorSELL$100K–$500K10K$24.50Nov 13, 2024
Taylor Stephen CharlesDirectorSELL$50K–$100K3K$22.00Aug 28, 2024
Taylor Stephen CharlesDirectorSELL$100K–$500K5K$22.14Aug 22, 2024
Jacobs JustinCEOBUY$15K–$50K3K$19.08Jun 18, 2024
Beyer Leslie AnnDirectorSELL$15K–$50K3K$11.05Dec 8, 2022
Taylor Stephen CharlesCEOSELL$50K–$100K4K$15.00Jun 8, 2022
Hazlett James RVP - Technical Ser…SELL$1K–$15K972$15.00Jun 8, 2022
Hazlett James RVP - Technical Ser…SELL$15K–$50K3K$14.02Jun 1, 2022
CHISHOLM JOHNDirectorSELL$1K–$15K500$11.79Apr 12, 2022
CHISHOLM JOHNDirectorSELL$15K–$50K2K$10.68Apr 1, 2022
CHISHOLM JOHNDirectorSELL$15K–$50K3K$11.92Mar 31, 2022
Hazlett James RVP - Technical Ser…SELL$15K–$50K3K$13.22Mar 3, 2022
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Activist & 5%+ Owners

SC 13D/13G filings — investors holding 5%+ of outstanding shares

The Vanguard Group

SC 13G · Jan 30, 2026

5.1%

641K shares

Hoak Public Equities, LP

SC 13D/A · Jan 27, 2026

4.6%

575K shares

Hoak Public Equities, LP

SC 13D/A · Jan 8, 2026

6.7%

838K shares

Mill Road Capital III, L.P.

SC 13D/A · Jan 23, 2025

4.3%

531K shares

Mill Road Capital III, L.P.

SC 13D/A · Jan 17, 2025

6.0%

755K shares

Mill Road Capital III, L.P. 2.

SC 13D/A · Dec 13, 2024

79.3M shares

Mill Road Capital III, L.P. 2.

SC 13D/A · Nov 26, 2024

83.0M shares

Stephen C. Taylor

SC 13D · Nov 25, 2024

4.9%

605 shares

5.5%

682K shares

BlackRock, Inc.

SC 13G · Nov 8, 2024

6.8%

847K shares

BlackRock, Inc.

SC 13G · Oct 22, 2024

6.8%

847K shares

FMR LLC

SC 13G/A · Jun 12, 2023

2.8%

346K shares

Mill Road Capital III, L.P.

SC 13D/A · May 2, 2023

7.3%

912K shares

Mill Road Capital III, L.P.

SC 13D/A · Mar 10, 2023

7.3%

905K shares

AWM Investment Company, Inc.

SC 13G/A · Feb 14, 2023

6.2%

769K shares

7.5%

926K shares

Hoak Public Equities, L.P.

SC 13D/A · Jan 11, 2023

9.3%

1.1M shares

Hoak Public Equities, L.P.

SC 13D/A · Dec 30, 2022

9.3%

1.1M shares

Mill Road Capital III, L.P.

SC 13D/A · Dec 23, 2022

6.6%

815K shares

Hoak Public Equities, L.P.

SC 13D/A · Dec 9, 2022

9.3%

1.1M shares

Hoak Public Equities, L.P.

SC 13D · Nov 28, 2022

8.0%

1.0M shares

FMR LLC

SC 13G/A · Mar 10, 2022

10.1%

1.3M shares

AWM Investment Company, Inc.

SC 13G · Feb 11, 2022

5.2%

678K shares

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