As of November 6, 2026, 2 holders' latest Schedule 13D or 13G filings report owning 5% or more of Avadel Pharmaceuticals Plc. The largest reported stake is BlackRock, Inc.'s, at 7%. 10 filings are on record since July 16, 2025 (Schedule 13G/A, July 16, 2025).
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Key facts
- · Reporting person: Janus Henderson Group Plc · Sole voting: 0 · Shared voting: 1,823,865 · Sole dispositive: 0 · Shared dispositive: 1,823,865 · SCHEDULE 13G/A, 2026-02-17
- · Reporting person: Two Seas Capital LP · Sole voting: 0 · Shared voting: 0 · Sole dispositive: 0 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-02-17
- · Reporting person: Brandes Investment Partners, LP · Sole voting: 0 · Shared voting: 218,835 · Sole dispositive: 0 · Shared dispositive: 218,835 · SCHEDULE 13G/A, 2026-02-12
- · Reporting person: Tontine Asset Associates, LLC · Sole voting: 0 · Shared voting: 2,859,475 · Sole dispositive: 0 · Shared dispositive: 2,859,475 · SCHEDULE 13G/A, 2026-02-06
- · Holder: Janus Henderson Group Plc · Percent: 7.7% · SCHEDULE 13G/A
Avadel Pharmaceuticals Plc has 10 Schedule 13D or 13G filings on record since 2025-07-16. 2 holders' latest filing reports 5% or more of ordinary shares. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| BlackRock, Inc. | 7% | 6,742,480 | SCHEDULE 13G/A, 2025-07-16 | 2025-06-30 |
| The Vanguard Group | 5.74% | 5,564,259 | SCHEDULE 13G, 2025-07-29 | 2025-06-30 |
| 4.9% | 4,839,357 | SCHEDULE 13G/A, 2026-02-06 | 2025-12-31 | |
| Janus Henderson Group Plc | 1.9% | 1,823,865 | SCHEDULE 13G/A, 2026-02-17 | 2025-12-31 |
| Brandes Investment Partners, LP | 0.2% | 218,835 | SCHEDULE 13G/A, 2026-02-12 | 2025-12-31 |
| Two Seas Capital LP | 0% | 0 | SCHEDULE 13G/A, 2026-02-17 | 2025-12-31 |
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More on Avadel Pharmaceuticals Plc and the records around it.
Companies that share a holder
- Tontine Asset Associates, LLC also filed stake reports on 7 other companies: Nine Energy Service, Inc. (Aug 2026), IF Bancorp, Inc. (May 2026), Drilling Tools International Corp (Feb 2026)
- Two Seas Capital LP also filed stake reports on 14 other companies: NEKTAR THERAPEUTICS (Sep 2026), Calumet, Inc. (Aug 2026), Quantum Corporation (Aug 2026)
- BRANDES INVESTMENT PARTNERS, LP also filed stake reports on 26 other companies: Globant S.A. (Oct 2026), American Outdoor Brands, Inc. (Aug 2026), HURCO COMPANIES INC (Aug 2026)
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Tontine Asset Associates, LLC | 0 | 2,859,475 | 0 | 2,859,475 | SCHEDULE 13G/A, 2026-02-06 |
| Tontine Capital Overseas Master Fund II, L.P. | 0 | 2,859,475 | 0 | 2,859,475 | SCHEDULE 13G/A, 2026-02-06 |
| Jeffrey L. Gendell | 70,000 | 4,769,357 | 70,000 | 4,769,357 | SCHEDULE 13G/A, 2026-02-06 |
| Janus Henderson Group Plc | 0 | 1,823,865 | 0 | 1,823,865 | SCHEDULE 13G/A, 2026-02-17 |
| Brandes Investment Partners, LP | 0 | 218,835 | 0 | 218,835 | SCHEDULE 13G/A, 2026-02-12 |
| Two Seas Capital LP | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-02-17 |
| Two Seas Capital GP LLC | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-02-17 |
| Sina Toussi | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-02-17 |
The latest filing names Avadel Pharmaceuticals Plc, with its principal executive office as 10 EARLSFORT TERRACE, DUBLIN (SCHEDULE 13G/A, 2026-02-17).
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-16 | BlackRock, Inc. | 7% | SCHEDULE 13G/A |
| 2025-07-29 | The Vanguard Group | 5.74% | SCHEDULE 13G |
| 2025-07-29 | The Vanguard Group | 5.74% | SCHEDULE 13G |
| 2025-08-13 | Two Seas Capital LP | 6.4% | SCHEDULE 13G/A |
| 2025-08-14 | Janus Henderson Group Plc | 11.5% | SCHEDULE 13G/A |
| 2025-11-14 | Janus Henderson Group Plc | 7.7% | SCHEDULE 13G/A |
| 2026-02-06 | Jeffrey L. Gendell | 4.9% | SCHEDULE 13G/A |
| 2026-02-12 | Brandes Investment Partners, LP | 0.2% | SCHEDULE 13G/A |
| 2026-02-17 | Two Seas Capital LP | 0% | SCHEDULE 13G/A |
| 2026-02-17 | Janus Henderson Group Plc | 1.9% | SCHEDULE 13G/A |
Questions about who owns Avadel Pharmaceuticals Plc
Who owns Avadel Pharmaceuticals Plc?
On this page, 2 holders' latest ownership filings report 5% or more of Avadel Pharmaceuticals Plc: BlackRock, Inc. (7%, Schedule 13G/A, filed 2025-07-16) and The Vanguard Group (5.74%, Schedule 13G, filed 2025-07-29).
Who are the largest shareholders of Avadel Pharmaceuticals Plc?
By the share each holder's latest filing reports, the largest holders of Avadel Pharmaceuticals Plc on this page are BlackRock, Inc. (7%) and The Vanguard Group (5.74%).
When did BlackRock, Inc. buy into Avadel Pharmaceuticals Plc?
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%. 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%); 10 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.