Feeds › Ownership stakes (13D / 13G)
Ownership stakes (13D / 13G)
Investors who own more than 5% of a company, from activists (13D) to passive holders (13G).
About this data
- What it is
- An investor who owns more than 5% of a public company must say so. Investors who may try to influence the company, such as activists, file the longer Schedule 13D; passive holders file the shorter Schedule 13G.
- Who files it
- The investor, within days of crossing 5%, and again whenever the stake changes materially.
- How current
- We collect new filings throughout the day on SEC business days.
- Worth knowing
- 13G filings are far more common than 13D. A 13D usually means the investor intends to push for changes, so it tends to get more attention.
All of this comes from public filings.
Source and freshness · Information, not investment advice (disclaimer).
Filings per day, last 30 days
13D (activist) 13G (passive)
Latest ownership filings
Showing: ticker HOS
| Filed | ScheduleBoth report a stake of more than 5%. A 13D is filed by investors who may try to influence the company, such as activists; a 13G by passive holders. | Company | Investor | Shares | % of shares | Filing |
|---|---|---|---|---|---|---|
| Oct 27, 2026 | SCHEDULE 13G/A (amended) | HOS Hornbeck Offshore Services, Inc. | BlackRock, Inc. | 21.26M | 11.5% | SCHEDULE 13G/A ↗ |
| Sep 9, 2026 | SCHEDULE 13D | HOS Hornbeck Offshore Services, Inc. | Ares Partners Holdco LLC | 8.62M | 3.8% | SCHEDULE 13D ↗ |
| Sep 9, 2026 | SCHEDULE 13D | HOS Hornbeck Offshore Services, Inc. | Ares Voting LLC | 8.62M | 3.8% | SCHEDULE 13D ↗ |
| Sep 9, 2026 | SCHEDULE 13D | HOS Hornbeck Offshore Services, Inc. | Ares Management GP LLC | 8.62M | 3.8% | SCHEDULE 13D ↗ |
| Sep 9, 2026 | SCHEDULE 13D | HOS Hornbeck Offshore Services, Inc. | Ares Management Corporation | 8.62M | 3.8% | SCHEDULE 13D ↗ |
| Sep 9, 2026 | SCHEDULE 13D | HOS Hornbeck Offshore Services, Inc. | Ares Holdco LLC | 8.62M | 3.8% | SCHEDULE 13D ↗ |
| Sep 9, 2026 | SCHEDULE 13D | HOS Hornbeck Offshore Services, Inc. | Ares Management Holdings L.P. | 8.62M | 3.8% | SCHEDULE 13D ↗ |
| Sep 9, 2026 | SCHEDULE 13D | HOS Hornbeck Offshore Services, Inc. | Ares Management LLC | 8.62M | 3.8% | SCHEDULE 13D ↗ |
| Sep 9, 2026 | SCHEDULE 13D | HOS Hornbeck Offshore Services, Inc. | ASSF Operating Manager IV, L.P. | 4.63M | 2.1% | SCHEDULE 13D ↗ |
| Sep 9, 2026 | SCHEDULE 13D | HOS Hornbeck Offshore Services, Inc. | Assf IV Aiv B, L.P. | 2.28M | 1.0% | SCHEDULE 13D ↗ |
| Sep 9, 2026 | SCHEDULE 13D | HOS Hornbeck Offshore Services, Inc. | ASSF IV AIV B Holdings III, L.P. | 2.34M | 1.1% | SCHEDULE 13D ↗ |
| Sep 9, 2026 | SCHEDULE 13D | HOS Hornbeck Offshore Services, Inc. | ASOF Investment Management LLC | 3.06M | 1.4% | SCHEDULE 13D ↗ |
| Sep 9, 2026 | SCHEDULE 13D | HOS Hornbeck Offshore Services, Inc. | ASOF Holdings I, L.P. | 2.12M | 0.9% | SCHEDULE 13D ↗ |
| Sep 9, 2026 | SCHEDULE 13D | HOS Hornbeck Offshore Services, Inc. | ASOF II Holdings I, L.P. | 804,363 | 0.4% | SCHEDULE 13D ↗ |
| Sep 9, 2026 | SCHEDULE 13D | HOS Hornbeck Offshore Services, Inc. | ASOF II A (DE) Holdings I, L.P. | 144,994 | 0.1% | SCHEDULE 13D ↗ |
| Sep 9, 2026 | SCHEDULE 13D | HOS Hornbeck Offshore Services, Inc. | Assf IV Hos Aiv 2, L.P. | 24.30M | 10.0% | SCHEDULE 13D ↗ |
| Sep 9, 2026 | SCHEDULE 13D | HOS Hornbeck Offshore Services, Inc. | Assf IV Hos Aiv 1, L.P. | 14.31M | 6.4% | SCHEDULE 13D ↗ |
| Sep 9, 2026 | SCHEDULE 13D | HOS Hornbeck Offshore Services, Inc. | Asof Hos Aiv 2, L.P. | 18.38M | 7.7% | SCHEDULE 13D ↗ |
| Sep 9, 2026 | SCHEDULE 13D | HOS Hornbeck Offshore Services, Inc. | Asof Hos Aiv 1, L.P. | 4.75M | 2.1% | SCHEDULE 13D ↗ |
| Sep 9, 2026 | SCHEDULE 13D | HOS Hornbeck Offshore Services, Inc. | Asof Hos GP, LLC | 61.74M | 23.7% | SCHEDULE 13D ↗ |
| Sep 9, 2026 | SCHEDULE 13G | HOS Hornbeck Offshore Services, Inc. | Stuart B. Brown | 11.73M | 5.3% | SCHEDULE 13G ↗ |
| Sep 9, 2026 | SCHEDULE 13G | HOS Hornbeck Offshore Services, Inc. | Vincent C. Vertin | 11.73M | 5.3% | SCHEDULE 13G ↗ |
| Sep 9, 2026 | SCHEDULE 13G | HOS Hornbeck Offshore Services, Inc. | David A. Ericson | 11.73M | 5.3% | SCHEDULE 13G ↗ |
| Sep 9, 2026 | SCHEDULE 13G | HOS Hornbeck Offshore Services, Inc. | Series E of Merced Capital Partners, LLC | 11.73M | 5.3% | SCHEDULE 13G ↗ |
| Sep 9, 2026 | SCHEDULE 13G | HOS Hornbeck Offshore Services, Inc. | Merced Capital, L.P. | 11.73M | 5.3% | SCHEDULE 13G ↗ |
| Sep 9, 2026 | SCHEDULE 13G | HOS Hornbeck Offshore Services, Inc. | Whitebox Multi-Strategy Partners, LP | 19.49M | 8.2% | SCHEDULE 13G ↗ |
| Sep 9, 2026 | SCHEDULE 13G | HOS Hornbeck Offshore Services, Inc. | Whitebox General Partner LLC | 37.87M | 15.0% | SCHEDULE 13G ↗ |
| Sep 9, 2026 | SCHEDULE 13G | HOS Hornbeck Offshore Services, Inc. | Whitebox Advisors LLC | 37.87M | 15.0% | SCHEDULE 13G ↗ |
| Mar 27, 2026 | SCHEDULE 13G/A (amended) | HOS Hornbeck Offshore Services, Inc. | The Vanguard Group | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Oct 9, 2025 | SCHEDULE 13G/A (amended) | HOS Hornbeck Offshore Services, Inc. | Dimensional Fund Advisors LP | 8.86M | 6.0% | SCHEDULE 13G/A ↗ |
| Jul 18, 2025 | SCHEDULE 13G/A (amended) | HOS Hornbeck Offshore Services, Inc. | BlackRock, Inc. | 21.19M | 14.0% | SCHEDULE 13G/A ↗ |
31 items, most recent first (up to 50). Every row links to its original filing. Updated Nov 15, 2026, 6:02 PM EST.
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