Nine Energy Service, Inc.
NINE- Exchange
- NYSE
- Industry
- Oil & Gas Field Services, NEC
- SEC CIK
- 0001532286
No open-market purchases or sales by Nine Energy Service, Inc. insiders were filed in the last 90 days; 29 institutions reported holding it in 13F filings for Q2 2026, worth $156.7M in total; no superinvestor holds it.
Holders of 5% or more of NINE
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Nine Energy Service, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Philosophy Capital Management LLC | 13G | 18.30%2.55M shares | New | Mar 11, 20261 filing | Mar 11, 2026 | SEC |
| Mackay Shields LLC | 13G | 11.91%1.66M shares | 0.00 ppfrom 11.91% | Mar 31, 20262 filings | Mar 31, 2026 | SEC |
| Monroe William | 13G/A | 11.50%4.86M shares | – | Feb 12, 20251 filing | Feb 12, 2025 | SEC |
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
7 Schedule 13D and 13G filings on Nine Energy Service, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Mar 31, 20263:20 PM ET | Mackay Shields LLCand 1 other | 13G | 11.91%1.66M shares | 0.00 ppfrom 11.91% | Mar 5, 2026 | SEC |
| Mar 31, 20261:36 PM ET | Mackay Shields LLCand 1 other | 13G | 11.91%1.66M shares | New | Mar 5, 2026 | SEC |
| Mar 11, 20266:43 PM ET | Philosophy Capital Management LLCand 2 others | 13G | 18.30%2.55M shares | New | Mar 5, 2026 | SEC |
| Feb 6, 20265:54 PM ET | Gendell Jeffrey Land 2 others | 13G/A | 0.00%0 shares | −9.90 ppfrom 9.90%Below 5% | Dec 31, 2025 | SEC |
| Feb 14, 20254:31 PM ET | Gendell Jeffrey Land 2 others | 13G/A | 9.90%4.18M shares | – | Dec 31, 2024 | SEC |
| Feb 12, 202512:55 PM ET | Monroe William | 13G/A | 11.50%4.86M shares | – | Dec 31, 2024 | SEC |
| Feb 4, 20254:28 PM ET | SCF Partners, Inc.and 4 others | 13G/A | 0.00%0 shares | –Below 5% | Dec 16, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Nine Energy Service, Inc. shares.
No Form 144 notices for Nine Energy Service, Inc. are on file.