Natural Gas Services Group Inc
NGS- Exchange
- NYSE
- Industry
- Oil & Gas Field Services, NEC
- SEC CIK
- 0001084991
No open-market purchases or sales by Natural Gas Services Group Inc insiders were filed in the last 90 days; 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
5 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 |
|---|---|---|---|---|---|---|
| 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 | –Below 5% | Jan 22, 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 |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Natural Gas Services Group Inc shares.
No Form 144 notices for Natural Gas Services Group Inc are on file.