Hornbeck Offshore Services, Inc.
HOS- Exchange
- NYSE
- Industry
- Oil & Gas Field Services, NEC
- SEC CIK
- 0000866829
No open-market purchases or sales by Hornbeck Offshore Services, Inc. insiders were filed in the last 90 days; 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 |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 14.00%21.2M shares | – | Jul 18, 20251 filing | Jul 18, 2025 | SEC |
| Dimensional Fund Advisors LP | 13G/A | 6.00%8.86M shares | – | Oct 9, 20251 filing | Oct 9, 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
2 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 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 |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Hornbeck Offshore Services, Inc. shares.
No Form 144 notices for Hornbeck Offshore Services, Inc. are on file.