Natural Gas Services Group Inc
NGS- Exchange
- NYSE
- Industry
- Oil & Gas Field Services, NEC
- SEC CIK
- 0001084991
In the last 90 days, Natural Gas Services Group Inc insiders filed 1 open-market purchase and 0 sales; 161 institutions reported holding it in 13F filings for Q2 2026, worth $475.2M in total; no superinvestor holds it.
Holders of 5% or more of NGS
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Natural Gas Services Group Inc, largest stake first. The change is against the holder's previous filing.
No holder currently reports owning 5% or more of Natural Gas Services Group Inc on Schedule 13D or 13G.
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
41 Schedule 13D and 13G filings on Natural Gas Services Group Inc, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Nov 13, 20266:20 AM ET | Aegis Financial Corpand 1 other | 13G/A | 4.51%581.4K shares | –Below 5% | Sep 30, 2026 | SEC |
| May 4, 20267:15 PM ET | AWM Investment Company, Inc. | 13G/A | 1.70%214.8K shares | –Below 5% | Mar 31, 2026 | SEC |
| Apr 28, 20266:59 PM ET | Franklin Mutual Advisers LLC | 13G/A | 0.00%0 shares | –Below 5% | Mar 31, 2026 | SEC |
| Mar 27, 202610:48 AM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | −5.09 ppfrom 5.09%Below 5% | Mar 13, 2026 | SEC |
| Jan 30, 20262:21 PM ET | Vanguard Group Inc | 13G | 5.09%640.5K shares | New | Dec 31, 2025 | SEC |
| Jan 26, 20268:29 PM ET | Hoak Public Equities, LPand 4 others | 13D/A | 4.57%575.0K shares | −2.10 ppfrom 6.67%Below 5% | Jan 22, 2026 | SEC |
| Jan 7, 20268:48 PM ET | Hoak Public Equities, LPand 4 others | 13D/A | 6.67%838.1K shares | – | Jan 5, 2026 | SEC |
| Jan 23, 20255:54 PM ET | Mill Road Capital III, L.P.and 2 others | 13D/A | 4.30%530.9K shares | −1.70 ppfrom 6.00%Below 5% | Jan 21, 2025 | SEC |
| Jan 16, 20259:03 PM ET | Mill Road Capital III, L.P.and 2 others | 13D/A | 6.00%754.6K shares | – | Jan 14, 2025 | SEC |
| Dec 13, 2024 | Mill Road Capital III, L.P. | 13D/AOld format | – | – | – | SEC |
| Nov 25, 20245:48 PM ET | Taylor Stephen Charles | 13DOld format | – | New | – | SEC |
| Nov 25, 2024 | Mill Road Capital III, L.P. | 13D/AOld format | – | – | – | SEC |
| Nov 12, 2024 | Aegis Financial Corp | 13G/AOld format | – | – | – | SEC |
| Nov 8, 2024 | BlackRock, Inc. | 13GOld format | – | – | – | SEC |
| Oct 22, 2024 | BlackRock, Inc. | 13GOld format | – | New | – | SEC |
| Feb 9, 2024 | Dimensional Fund Advisors LP | 13G/AOld format | – | – | – | SEC |
| Feb 8, 2024 | Aegis Financial Corp | 13GOld format | – | New | – | SEC |
| Jun 12, 2023 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| May 3, 2023 | Mill Road Capital III, L.P. | 13D/AOld format | – | – | – | SEC |
| Mar 10, 2023 | Mill Road Capital III, L.P. | 13D/AOld format | – | – | – | SEC |
| Feb 14, 2023 | AWM Investment Company, Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2023 | Dimensional Fund Advisors LP | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2023 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Jan 11, 2023 | Hoak Public Equities, LP | 13D/AOld format | – | – | – | SEC |
| Dec 30, 2022 | Hoak Public Equities, LP | 13D/AOld format | – | – | – | SEC |
| Dec 23, 2022 | Mill Road Capital III, L.P. | 13D/AOld format | – | – | – | SEC |
| Dec 9, 2022 | Hoak Public Equities, LP | 13D/AOld format | – | – | – | SEC |
| Nov 28, 2022 | Hoak Public Equities, LP | 13DOld format | – | New | – | SEC |
| Mar 10, 2022 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Feb 11, 2022 | AWM Investment Company, Inc. | 13GOld format | – | – | – | SEC |
| Feb 11, 2022 | AWM Investment Company, Inc. | 13GOld format | – | New | – | SEC |
| Feb 9, 2022 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Feb 8, 2022 | Dimensional Fund Advisors LP | 13G/AOld format | – | – | – | SEC |
| Feb 2, 2022 | Franklin Mutual Advisers LLC | 13G/AOld format | – | – | – | SEC |
| Apr 15, 20214:19 PM ET | Natural Gas Services Group Inc | 13DOld format | – | New | – | SEC |
| Feb 18, 2021 | HITE Hedge Asset Management LLC | 13G/AOld format | – | – | – | SEC |
| Feb 12, 2021 | Dimensional Fund Advisors LP | 13G/AOld format | – | – | – | SEC |
| Feb 11, 2021 | Renaissance Technologies LLC | 13G/AOld format | – | – | – | SEC |
| Feb 8, 2021 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Feb 4, 2021 | Franklin Mutual Advisers LLC | 13G/AOld format | – | – | – | SEC |
| Jan 4, 2021 | Mill Road Capital III, L.P. | 13DOld format | – | New | – | SEC |
Form 144: proposed insider sales
29 notices from officers, directors and other affiliates planning to sell Natural Gas Services Group Inc shares, newest first.
| Filed (ET) | Seller | Shares to sell | Market value | Planned sale | Broker | Filing |
|---|---|---|---|---|---|---|
| Mar 6, 20261:19 PM ET | Taylor Stephen CharlesDirector | 30.0K | $1.12M | Mar 6, 202610b5-1 | RBC CAPITAL MARKETS LLC | SEC |
| Mar 5, 20264:39 PM ET | Taylor Stephen CharlesDirector | 70.0K | $2.63M | Mar 5, 202610b5-1 | RBC CAPITAL MARKETS LLC | SEC |
| Dec 11, 20253:28 PM ET | Taylor Stephen CharlesDirector | 10.0K | $335.4K | Dec 11, 2025 | RBC CAPITAL MARKETS LLC | SEC |
| Dec 10, 20253:27 PM ET | Taylor Stephen CharlesDirector | 10.0K | $331.6K | Dec 10, 2025 | RBC CAPITAL MARKETS LLC | SEC |
| Dec 4, 20254:00 PM ET | Taylor Stephen CharlesDirector | 20.0K | $642.4K | Dec 4, 2025 | RBC CAPITAL MARKETS LLC | SEC |
| Nov 20, 20252:00 PM ET | Taylor Stephen CharlesDirector | 10.0K | $313.8K | Nov 20, 2025 | RBC CAPITAL MARKETS LLC | SEC |
| Nov 19, 20253:54 PM ET | Taylor Stephen CharlesDirector | 10.0K | $303.1K | Nov 19, 2025 | RBC CAPITAL MARKETS LLC | SEC |
| Nov 17, 20254:14 PM ET | Taylor Stephen CharlesDirector | 10.0K | $310.1K | Nov 17, 202510b5-1 | RBC CAPITAL MARKETS LLC | SEC |
| Nov 10, 20254:28 PM ET | Taylor Stephen CharlesDirector | 18.7K | $558.1K | Nov 10, 202510b5-1 | RBC CAPITAL MARKETS LLC | SEC |
| Nov 7, 20254:35 PM ET | Taylor Stephen CharlesDirector | 11.2K | $324.1K | Nov 7, 202510b5-1 | RBC CAPITAL MARKETS LLC | SEC |
| Nov 6, 20254:30 PM ET | Taylor Stephen CharlesDirector | 100 | $2.90K | Nov 6, 202510b5-1 | RBC CAPITAL MARKETS LLC | SEC |
| Sep 26, 20252:20 PM ET | Taylor Stephen CharlesDirector | 7.92K | $225.6K | Sep 26, 202510b5-1 | RBC CAPITAL MARKETS LLC | SEC |
| Sep 25, 20254:14 PM ET | Taylor Stephen CharlesDirector | 759 | $21.6K | Sep 25, 202510b5-1 | RBC CAPITAL MARKETS LLC | SEC |
| Sep 24, 20254:01 PM ET | Taylor Stephen CharlesDirector | 1.33K | $37.8K | Sep 24, 202510b5-1 | RBC CAPITAL MARKETS LLC | SEC |
| Sep 23, 20253:51 PM ET | Taylor Stephen CharlesDirector | 10.0K | $280.1K | Sep 23, 202510b5-1 | RBC CAPITAL MARKETS LLC | SEC |
| Sep 16, 20251:45 PM ET | Taylor Stephen CharlesDirector | 10.0K | $275.0K | Sep 16, 202510b5-1 | RBC CAPITAL MARKETS LLC | SEC |
| Sep 4, 20255:29 PM ET | Taylor Stephen CharlesDirector | 10.0K | $270.0K | Sep 4, 202510b5-1 | RBC CAPITAL MARKETS LLC | SEC |
| Aug 22, 20252:32 PM ET | Taylor Stephen CharlesDirector | 20.0K | $525.1K | Aug 22, 202510b5-1 | RBC CAPITAL MARKETS LLC | SEC |
| May 15, 20254:10 PM ET | Taylor Stephen CharlesDirector | 25.0K | $622.6K | May 15, 2025 | RBC CAPITAL MARKETS LLC | SEC |
| Jan 21, 202511:37 AM ET | Taylor Stephen CharlesDirector | 10.0K | $290.1K | Jan 21, 202510b5-1 | RBC CAPITAL MARKETS LLC | SEC |
| Dec 27, 202412:53 PM ET | Bradshaw David LDirector | 15.0K | $387.9K | Dec 27, 2024 | Edward Jones | SEC |
| Dec 12, 20242:39 PM ET | Taylor Stephen CharlesDirector | 10.0K | $271.5K | Dec 12, 2024 | RBC CAPITAL MARKETS LLC | SEC |
| Nov 25, 20244:44 PM ET | Taylor Stephen CharlesDirector | 10.0K | $285.0K | Nov 25, 202410b5-1 | RBC CAPITAL MARKETS LLC | SEC |
| Nov 21, 20242:43 PM ET | Taylor Stephen CharlesDirector | 40.0K | $1.07M | Nov 21, 202410b5-1 | RBC CAPITAL MARKETS LLC | SEC |
| Nov 20, 20242:38 PM ET | Taylor Stephen CharlesDirector | 10.0K | $260.0K | Nov 20, 202410b5-1 | RBC CAPITAL MARKETS LLC | SEC |
Showing the latest 25. See the NGS notices from the last 12 months