Hornbeck Offshore Services, Inc. has 6 Schedule 13D or 13G filings on record since 2025-07-18. 5 holders' latest filing reports 5% or more of common stock, par value $0.00001 per share. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Asof Hos Gp, LLC | 23.7% | 61,738,413 | SCHEDULE 13D, 2026-09-09 | 2026-09-01 |
| Whitebox Advisors LLC | 15% | 37,873,696 | SCHEDULE 13G, 2026-09-09 | 2026-09-01 |
| BlackRock, Inc. | 14% | 21,194,762 | SCHEDULE 13G/A, 2025-07-18 | 2025-06-30 |
| Dimensional Fund Advisors LP | 6% | 8,858,123 | SCHEDULE 13G/A, 2025-10-09 | 2025-09-30 |
| Merced Capital, L.P. | 5.3% | 11,733,106 | SCHEDULE 13G, 2026-09-09 | 2026-09-01 |
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-27 | 2026-03-13 |
Purpose of Transaction (Item 4)
Asof Hos Gp, LLC
Merger On April 22, 2026, Helix Energy Solutions Group, Inc., a Minnesota corporation ("Helix"), Hornbeck Offshore Services, Inc., a Delaware corporation ("Legacy Hornbeck"), and certain subsidiaries of Helix entered into an Agreement and Plan of Merger (as it may be amended from time to time, the "Merger Agreement"), pursuant to which a wholly owned subsidiary of Helix merged with and into Legacy Hornbeck (the "first merger"), with Legacy Hornbeck surviving, and Legacy Hornbeck immediately merged with and into another wholly owned subsidiary of Helix, with that subsidiary surviving as a wholly owned subsidiary of Helix (the "Mergers"). Immediately prior to the Mergers, Helix converted from a Minnesota corporation into a Delaware corporation and, following such conversion and the Mergers, changed its name to "Hornbeck Offshore Services, Inc." The Mergers closed on September 1, 2026 (the "Closing Date"). At the effective time of the first merger (the "Effective Time"), each share of Legacy Hornbeck common stock issued and outstanding immediately before the Effective Time, other than certain excluded shares and shares as to which appraisal rights have been properly exercised, automatically converted into the right to receive 10.27167 validly issued, fully paid and nonassessable shares of the Issuer's Common Stock (the "Exchange Ratio") plus the cash value of any fractional share that was payable pursuant to the Merger Agreement. Each warrant (the "Jones Act Warrant") issued …The first part of Item 4 of the SCHEDULE 13D filed 2026-09-09; the filing has the rest
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-18 | BlackRock, Inc. | 14% | SCHEDULE 13G/A |
| 2025-10-09 | Dimensional Fund Advisors LP | 6% | SCHEDULE 13G/A |
| 2026-03-27 | The Vanguard Group | 0% | SCHEDULE 13G/A |
| 2026-09-09 | Whitebox Advisors LLC | 15% | SCHEDULE 13G |
| 2026-09-09 | Merced Capital, L.P. | 5.3% | SCHEDULE 13G |
| 2026-09-09 | Asof Hos Gp, LLC | 23.7% | SCHEDULE 13D |
Tools for this story
Each opens in a new tab, filled in for Hornbeck Offshore Services, Inc.. With no account yet, you sign up free and land on the result.
Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.