As of November 6, 2026, 2 holders' latest Schedule 13D or 13G filings report owning 5% or more of Seadrill Ltd. The largest reported stake is BlackRock, Inc.'s, at 7.3%. 11 filings are on record since July 16, 2025 (Schedule 13G/A, July 16, 2025).
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Key facts
- · Holder: Elliott Investment Management L.P. · Percent: 4.9% · Shares: 3,108,641 · SCHEDULE 13D/A
- · Holder: Elliott Investment Management L.P. · Percent: 5.8% · SCHEDULE 13D/A
- · Reporting person: Canyon Capital Advisors LLC · Sole voting: 1,261,779 · Shared voting: 0 · Sole dispositive: 1,261,779 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-05-18
- · Reporting person: Adage Capital Management, L.P. · Sole voting: 0 · Shared voting: 2,463,436 · Sole dispositive: 0 · Shared dispositive: 2,463,436 · SCHEDULE 13G/A, 2026-05-13
- · Holder: Vanguard Capital Management · Percent: 5.04% · SCHEDULE 13G
Seadrill Ltd has 11 Schedule 13D or 13G filings on record since 2025-07-16. 2 holders' latest filing reports 5% or more of common shares, par value $0.01 per share. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| BlackRock, Inc. | 7.3% | 4,542,737 | SCHEDULE 13G/A, 2025-07-16 | 2025-06-30 |
| Vanguard Capital Management | 5.04% | 3,150,314 | SCHEDULE 13G, 2026-04-28 | 2026-03-31 |
| Elliott Investment Management L.P. | 4.9% | 3,108,641 | SCHEDULE 13D/A, 2026-10-08 | 2026-10-08 |
| Adage Capital Management, L.P. | 3.94% | 2,463,436 | SCHEDULE 13G/A, 2026-05-13 | 2026-03-31 |
| Canyon Capital Advisors LLC | 2.02% | 1,261,779 | SCHEDULE 13G/A, 2026-05-18 | 2026-03-31 |
| Wellington Management Group LLP | 1% | 631,604 | SCHEDULE 13G/A, 2025-11-12 | 2025-09-30 |
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-26 | 2026-03-13 |
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More on Seadrill Ltd and the records around it.
Seadrill Ltd elsewhere on the record
Companies that share a holder
- CANYON CAPITAL ADVISORS LLC also filed stake reports on 2 other companies: CBL & Associates Properties, Inc. (Oct 2026)
- Elliott Investment Management L.P. also filed stake reports on 5 other companies: Triple Flag Precious Metals Corp. (Nov 2026), Pinterest, Inc. (Aug 2026), SOUTHWEST AIRLINES CO (Apr 2026)
- Adage Capital Management, L.P. also filed stake reports on 136 other companies: ACP Holdings Acquisition Corp. (Aug 2026), AmperCap Acquisition Company (Aug 2026), Aura Biosciences, Inc. (Aug 2026)
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Elliott Investment Management L.P. | 3,108,641 | 0 | 3,108,641 | 0 | SCHEDULE 13D/A, 2026-10-08 |
| Adage Capital Management, L.P. | 0 | 2,463,436 | 0 | 2,463,436 | SCHEDULE 13G/A, 2026-05-13 |
| Robert Atchinson | 0 | 2,463,436 | 0 | 2,463,436 | SCHEDULE 13G/A, 2026-05-13 |
| Phillip Gross | 0 | 2,463,436 | 0 | 2,463,436 | SCHEDULE 13G/A, 2026-05-13 |
| Canyon Capital Advisors LLC | 1,261,779 | 0 | 1,261,779 | 0 | SCHEDULE 13G/A, 2026-05-18 |
| Joshua S. Friedman | 0 | 1,261,779 | 0 | 1,261,779 | SCHEDULE 13G/A, 2026-05-18 |
| Mitchell R. Julis | 0 | 1,261,779 | 0 | 1,261,779 | SCHEDULE 13G/A, 2026-05-18 |
The latest filing identifies Seadrill Ltd by CUSIP G7997W102 and gives its principal executive office as 4425 Westway Park Blvd., Suite 170, Houston, TX 77041 (SCHEDULE 13D/A, 2026-10-08).
Source of funds (Item 3)
Item 4 of the Schedule 13D is incorporated herein by reference. The aggregate cost of the Common Shares reported herein is approximately $69,208,895. The Reporting Person may effect purchases of the Common Shares through margin accounts maintained for the Elliott Funds with prime brokers, which extend margin credit as and when required to open or carry positions in their margin accounts, subject to applicable federal margin regulations, stock exchange rules and such firms' credit policies.Elliott Investment Management L.P., SCHEDULE 13D/A, 2026-10-08
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-16 | BlackRock, Inc. | 7.3% | SCHEDULE 13G/A |
| 2025-07-29 | The Vanguard Group | 6.06% | SCHEDULE 13G |
| 2025-08-12 | Adage Capital Management, L.P. | 5.04% | SCHEDULE 13G/A |
| 2025-11-12 | Wellington Management Group LLP | 1% | SCHEDULE 13G/A |
| 2025-12-18 | Elliott Investment Management L.P. | 6.8% | SCHEDULE 13D/A |
| 2026-03-26 | The Vanguard Group | 0% | SCHEDULE 13G/A |
| 2026-04-28 | Vanguard Capital Management | 5.04% | SCHEDULE 13G |
| 2026-05-13 | Adage Capital Management, L.P. | 3.94% | SCHEDULE 13G/A |
| 2026-05-18 | Canyon Capital Advisors LLC | 2.02% | SCHEDULE 13G/A |
| 2026-09-21 | Elliott Investment Management L.P. | 5.8% | SCHEDULE 13D/A |
| 2026-10-08 | Elliott Investment Management L.P. | 4.9% | SCHEDULE 13D/A |
Questions about who owns Seadrill Ltd
Who owns Seadrill Ltd?
On this page, 2 holders' latest ownership filings report 5% or more of Seadrill Ltd: BlackRock, Inc. (7.3%, Schedule 13G/A, filed 2025-07-16) and Vanguard Capital Management (5.04%, Schedule 13G, filed 2026-04-28).
Who are the largest shareholders of Seadrill Ltd?
By the share each holder's latest filing reports, the largest holders of Seadrill Ltd on this page are BlackRock, Inc. (7.3%) and Vanguard Capital Management (5.04%).
When did BlackRock, Inc. buy into Seadrill Ltd?
The filings give report dates, not purchase dates. The earliest filing from BlackRock, Inc. on this page is the Schedule 13G/A, filed 2025-07-16, reporting 7.3%. That earliest filing is itself an amendment, which updates an earlier report.
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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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.