As of November 6, 2026, Nine Energy Service, Inc. is a publicly traded company (NYSE: NINE); its largest reported holder is Philosophy Capital Management LLC, with 17% on Schedule 13G/A of August 14, 2026, then MacKay Shields LLC (11.91%). The largest insider holding is William Monroe, a 10% owner, with 4,113,000 shares (29.5% of shares outstanding), per Form 4 of August 22, 2025 (Schedule 13G/A, August 14, 2026).
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Is Nine Energy Service, Inc. a real, registered company?
- Nine Energy Service, Inc. files with the SEC under CIK 1532286 (its SEC filings).
- Its shares are listed under the ticker NINE on NYSE (SEC company record).
- Incorporated in Delaware; business address in Houston, Texas, as its SEC filings state.
- Court and bankruptcy records: see Before you sign or pay below.
Before you sign or pay
- Court record: no federal case found under Nine Energy Service, Inc. in our court records (as of 2026-11-06).
- Bankruptcy: Nine Energy Service, Inc. and its subsidiaries filed for Chapter 11, as Nine Energy Service, Inc. reported on Form 8-K on February 2, 2026 (Form 8-K, Item 1.03, filed 2026-02-02).
- Leadership changes: the latest reported is Heather Schmidt, Chief Financial Officer (Form 8-K filed 2026-05-22). Check you are dealing with the people now in charge.
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names Philosophy Capital Management LLC (filed 2026-08-14).
Who are Nine Energy Service, Inc.'s owners and officers?
Nine Energy Service, Inc.: incorporated in Delaware; business address in Houston, Texas; industry Oil & Gas Field Services, NEC (Schedule 13G/A, 2026-08-14).
| Report | Holder | Share |
|---|---|---|
| Schedule 13G/A, 2026-08-14 | Jeffrey L. Gendell | 4.4% |
| Schedule 13G/A, 2026-08-14 | Philosophy Capital Management LLC | 17% |
| Schedule 13G, 2026-07-09 | Adage Capital Management, L.P. | 9.71% |
| Schedule 13G, 2026-07-02 | Algebris Investments (US) Inc. | 6% |
| Schedule 13G, 2026-05-15 | Jeffrey L. Gendell | 5.6% |
| Schedule 13G/A, 2026-04-16 | Monroe William | 0.3% |
| Schedule 13G, 2026-04-09 | Castleknight Master Fund LP | 8.3% |
| Schedule 13G, 2026-03-31 | Mackay Shields LLC | 11.91% |
| Schedule 13G, 2026-03-31 | Mackay Shields LLC | 11.91% |
| Schedule 13G, 2026-03-11 | Philosophy Capital Management LLC | 18.3% |
| Schedule 13G/A, 2026-02-06 | Tontine Asset Associates, LLC | 0% |
Questions about who owns Nine Energy Service, Inc.
Who owns Nine Energy Service, Inc.?
On this page, 5 holders' latest ownership filings report 5% or more of Nine Energy Service, Inc.: Philosophy Capital Management LLC (17%, Schedule 13G/A, filed 2026-08-14), Mackay Shields LLC (11.91%, Schedule 13G, filed 2026-03-31), Adage Capital Management, L.P. (9.71%, Schedule 13G, filed 2026-07-09), Castleknight Master Fund LP (8.3%, Schedule 13G, filed 2026-04-09) and Algebris Investments (US) Inc. (6%, Schedule 13G, filed 2026-07-02).
Who are the largest shareholders of Nine Energy Service, Inc.?
By the share each holder's latest filing reports, the largest holders of Nine Energy Service, Inc. on this page are Philosophy Capital Management LLC (17%), Mackay Shields LLC (11.91%) and Adage Capital Management, L.P. (9.71%).
When did Philosophy Capital Management LLC buy into Nine Energy Service, Inc.?
The filings give report dates, not purchase dates. The earliest filing from Philosophy Capital Management LLC on this page is the Schedule 13G, filed 2026-03-11, reporting 18.3%; its latest, Schedule 13G/A filed 2026-08-14, reports 17%.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 11 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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| Filed | Person | Role | Change | Effective |
|---|---|---|---|---|
| Form 8-K, 2026-05-22 | Heather Schmidt | Chief Financial Officer | appointed | 2026-05-22 |
| Form 8-K, 2026-04-24 | Guy Sirkes | Chief Financial Officer | departed | |
| Form 8-K, 2026-04-24 | Heather Schmidt | Chief Financial Officer | appointed |
Which insiders own Nine Energy Service, Inc. shares?
Directors, officers and holders of 10% or more report their shares on Forms 3, 4 and 5. Each line is the latest such report, largest holding first.
- , a 10% owner: 4,113,000 shares (29.5% of shares outstanding) (Form 4, 2025-08-22).
- SCF-VII, G.P., Limited Partnership: 2,586,884 shares (18.5% of shares outstanding), held indirectly through By SCF-VII, L.P. and 1 other, on a joint filing (Form 4, 2024-12-23).
- Scf-viiaA), L.P.: 2,586,884 shares (18.5% of shares outstanding), held indirectly through By SCF-VII, L.P. and 1 other, on a joint filing (Form 4, 2024-12-23).
- Scf-vii, L.P.: 2,586,884 shares (18.5% of shares outstanding), held indirectly through By SCF-VII, L.P. and 1 other, on a joint filing (Form 4, 2024-12-23).
- SCF Partners, Inc.: 2,586,884 shares (18.5% of shares outstanding), held indirectly through By SCF-VII, L.P. and 1 other, on a joint filing (Form 4, 2024-12-23).
Shares outstanding: 13,949,990 as of 2026-08-03, from the company's latest SEC cover page.
How much has Nine Energy Service, Inc. raised?
No fundraising or offering filing from Nine Energy Service, Inc. is on file with us.
What is Nine Energy Service, Inc.'s court and legal record?
Bankruptcy or receivership reported on Form 8-K, Item 1.03: Form 8-K, 2026-03-10 (Chapter 11), Form 8-K, 2026-02-02 (Chapter 11).
Red flags found
a bankruptcy or receivership filing by Nine Energy Service, Inc. and its subsidiaries (Form 8-K, 2026-02-02).
Keep reading
More on Nine Energy Service, Inc. and the records around it.
Nine Energy Service, Inc. elsewhere on the record
- 5%+ stake filings Aug 2026
- Leadership changes May 2026
- Bankruptcy record
Companies that share a holder
- Philosophy Capital Management LLC also filed stake reports on 1 other company: Hudson Pacific Properties, Inc. (Aug 2026)
- Jeffrey L. Gendell also filed stake reports on 7 other companies: IF Bancorp, Inc. (May 2026), Avadel Pharmaceuticals plc (Feb 2026), Drilling Tools International Corp (Feb 2026)
- CastleKnight Master Fund LP also filed stake reports on 17 other companies: Suja Life, Inc. (Aug 2026), Advantage Solutions Inc. (Aug 2026), HAIN CELESTIAL GROUP INC (Aug 2026)
Related pages
Bankruptcy filingsLeadership changes5%+ holders
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https://mentionfox.com/who-owns/nine-energy-service