Hornbeck Offshore Services, Inc.
HOS- Exchange
- NYSE
- Industry
- Oil & Gas Field Services, NEC
- SEC CIK
- 0000866829
In the last 90 days, Hornbeck Offshore Services, Inc. insiders filed 1 open-market purchase and 0 sales; 285 institutions reported holding it in 13F filings for Q2 2026, worth $1.19B in total; no superinvestor holds it.
Holders of 5% or more of HOS
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Hornbeck Offshore Services, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Asof Hos GP, LLC | 13D | 23.70%61.7M shares | New | Sep 9, 20261 filing | Sep 9, 2026 | SEC |
| Whitebox Advisors LLC | 13G | 15.00%37.9M shares | New | Sep 9, 20261 filing | Sep 9, 2026 | SEC |
| BlackRock, Inc. | 13G/A | 11.50%21.3M shares | −2.50 ppfrom 14.00% | Oct 18, 20244 filings | Oct 27, 2026 | SEC |
| Dimensional Fund Advisors LP | 13G/A | 6.00%8.86M shares | – | Feb 12, 20215 filings | Oct 9, 2025 | SEC |
| Merced Capital, L.P. | 13G | 5.30%11.7M shares | New | Sep 9, 20261 filing | Sep 9, 2026 | 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
29 Schedule 13D and 13G filings on Hornbeck Offshore Services, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Oct 27, 20265:25 PM ET | BlackRock, Inc. | 13G/A | 11.50%21.3M shares | −2.50 ppfrom 14.00% | Sep 30, 2026 | SEC |
| Sep 9, 20265:30 PM ET | Asof Hos GP, LLCand 18 others | 13D | 23.70%61.7M shares | New | Sep 1, 2026 | SEC |
| Sep 9, 20264:56 PM ET | Whitebox Advisors LLCand 2 others | 13G | 15.00%37.9M shares | New | Sep 1, 2026 | SEC |
| Sep 9, 202611:37 AM ET | Merced Capital, L.P.and 4 others | 13G | 5.30%11.7M shares | New | Sep 1, 2026 | SEC |
| Mar 27, 20269:35 AM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Oct 9, 20251:48 PM ET | Dimensional Fund Advisors LP | 13G/A | 6.00%8.86M shares | – | Sep 30, 2025 | SEC |
| Jul 18, 20258:49 PM ET | BlackRock, Inc. | 13G/A | 14.00%21.2M shares | – | Jun 30, 2025 | SEC |
| Nov 8, 2024 | BlackRock, Inc. | 13G/AOld format | – | – | – | SEC |
| Oct 18, 2024 | BlackRock, Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2024 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2024 | Dimensional Fund Advisors LP | 13G/AOld format | – | – | – | SEC |
| Jan 19, 20242:40 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| May 12, 2023 | Kratz Owen E | 13DOld format | – | New | – | SEC |
| Feb 10, 2023 | Dimensional Fund Advisors LP | 13GOld format | – | – | – | SEC |
| Feb 9, 2023 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 6, 2023 | Victory Capital Management Inc | 13G/AOld format | – | – | – | SEC |
| Jan 26, 20238:52 AM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Jan 20, 20233:00 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2022 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 8, 2022 | Dimensional Fund Advisors LP | 13G/AOld format | – | – | – | SEC |
| Feb 7, 20224:41 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 1, 2022 | Victory Capital Management Inc | 13G/AOld format | – | – | – | SEC |
| Aug 10, 2021 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 12, 2021 | Dimensional Fund Advisors LP | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2021 | Bank of New York Mellon Corp | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2021 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 3, 2021 | Victory Capital Management Inc | 13G/AOld format | – | – | – | SEC |
| Feb 1, 2021 | Bank of New York Mellon Corp | 13GOld format | – | New | – | SEC |
| Jan 26, 20212:22 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
Form 144: proposed insider sales
24 notices from officers, directors and other affiliates planning to sell Hornbeck Offshore Services, Inc. shares, newest first.
| Filed (ET) | Seller | Shares to sell | Market value | Planned sale | Broker | Filing |
|---|---|---|---|---|---|---|
| Sep 25, 202612:32 PM ET | Harris PaulaFormer director | 73.8K | $606.5K | Sep 25, 2026 | Fidelity Brokerage Services LLC | SEC |
| Sep 15, 20264:38 PM ET | Staffeldt ErikFormer officer | 253.7K | $2.24M | Sep 15, 2026 | Fidelity Brokerage Services LLC | SEC |
| Sep 9, 20264:29 PM ET | Staffeldt ErikOfficer | 107.1K | $976.1K | Sep 9, 2026 | Fidelity Brokerage Services LLC | SEC |
| Sep 8, 20264:21 PM ET | Staffeldt ErikOfficer | 50.9K | $464.5K | Sep 8, 2026 | Fidelity Brokerage Services LLC | SEC |
| Sep 3, 20264:41 PM ET | Glassman DianaFormer director | 13.0K | $125.5K | Sep 3, 2026 | Fidelity Brokerage Services LLC | SEC |
| Sep 3, 202611:54 AM ET | Staffeldt ErikOfficer | 130.6K | $1.33M | Sep 3, 2026 | Fidelity Brokerage Services LLC | SEC |
| Sep 2, 20264:12 PM ET | Kratz Owen EOfficer | 2.50M | $26.4M | Sep 2, 2026 | Stifel Nicolaus & Company Inc | SEC |
| Sep 2, 20263:24 PM ET | Glassman DianaDirector | 14.0K | $152.1K | Sep 2, 2026 | Fidelity Brokerage Services LLC | SEC |
| Sep 2, 20261:39 PM ET | Neikirk Kenneth EnglishOfficer | 260.1K | $2.71M | Sep 2, 2026 | Fidelity Brokerage Services LLC | SEC |
| Sep 2, 202612:49 PM ET | Staffeldt ErikOfficer | 117.6K | $1.27M | Sep 2, 2026 | Fidelity Brokerage Services LLC | SEC |
| Nov 3, 202512:46 PM ET | Sparks Scott AndrewOfficer | 40.0K | $270.4K | Nov 3, 2025 | Fidelity Brokerage Services LLC | SEC |
| Dec 30, 20244:50 PM ET | Neikirk Kenneth EnglishOfficer | 51.4K | $471.1K | Dec 30, 2024 | Fidelity Brokerage Services LLC | SEC |
| Dec 30, 20244:50 PM ET | Neikirk Kenneth EnglishOfficer | 32.6K | $299.0K | Dec 30, 2024 | Fidelity Brokerage Services LLC | SEC |
| Dec 10, 20245:10 PM ET | Glassman DianaDirector | 16.0K | $159.1K | Dec 10, 2024 | Fidelity Brokerage Services LLC | SEC |
| Dec 10, 20244:37 PM ET | Sparks Scott AndrewOfficer | 170.0K | $1.68M | Dec 10, 2024 | Fidelity Brokerage Services LLC | SEC |
| Oct 3, 20244:40 PM ET | Kratz Owen EOfficer · Director | 298.4K | $3.56M | Oct 3, 202410b5-1 | Merrill, Lynch, Pierce, Fenner & Smith | SEC |
| Jun 20, 20241:21 PM ET | Glassman DianaDirector | 2.86K | $30.1K | Jun 20, 2024 | Fidelity Brokerage Services LLC | SEC |
| May 20, 20245:25 PM ET | Kratz Owen EOfficer · Director | 500.0K | $5.75M | May 20, 2024 | Merrill, Lynch, Pierce, Fenner & Smith | SEC |
| May 7, 202412:44 PM ET | Sparks Scott AndrewOfficer | 12.0K | $137.2K | May 7, 2024 | Fidelity Brokerage Services LLC | SEC |
| Sep 28, 202312:29 PM ET | Glassman DianaDirector | 6.80K | $77.6K | Sep 28, 2023 | Fidelity Brokerage Services LLC | SEC |
| Aug 18, 20234:44 PM ET | Sparks Scott AndrewOfficer | 10.0K | $95.3K | Aug 18, 2023 | Fidelity Brokerage Services LLC | SEC |
| Aug 11, 202311:49 AM ET | Lovoi JohnDirector | 15.0K | $145.4K | Aug 11, 2023 | Fidelity Brokerage Services LLC | SEC |
| Jun 8, 20233:40 PM ET | Sparks Scott AndrewOfficer | 20.0K | $148.1K | Jun 8, 2023 | Fidelity Brokerage Services LLC | SEC |
| Feb 27, 20233:46 PM ET | Sparks Scott AndrewOfficer | 75.0K | $633.1K | Feb 27, 2023 | Fidelity Brokerage Services LLC | SEC |