Alkermes plc. SEC filings ALKS
Alkermes plc. has 1,000 filings in SEC EDGAR's recent list, going back to May 4, 2017. Its latest annual report, Form ARS, was filed on Apr 6, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 3, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 3, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Nov 3, 2026 | Nov 3, 2026 |
| 144 | Notice of proposed sale | Nov 3, 2026 | — |
| 10-Q | Quarterly report | Nov 3, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations
|
Nov 3, 2026 | Nov 3, 2026 |
| 4 | Insider transaction | Oct 9, 2026 | Oct 8, 2026 |
| 4 | Insider transaction | Oct 9, 2026 | Oct 7, 2026 |
| 4 | Insider transaction | Oct 2, 2026 | Oct 2, 2026 |
| 144 | Notice of proposed sale | Oct 2, 2026 | — |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Sep 21, 2026 | Sep 21, 2026 |
| 3 | Initial insider ownership | Sep 18, 2026 | Sep 14, 2026 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Sep 16, 2026 | Sep 14, 2026 |
| 4 | Insider transaction | Sep 3, 2026 | Sep 3, 2026 |
| 144 | Notice of proposed sale | Sep 3, 2026 | — |
| 4 | Insider transaction | Sep 1, 2026 | Sep 1, 2026 |
| 144 | Notice of proposed sale | Sep 1, 2026 | — |
| 4 | Insider transaction | Aug 17, 2026 | Aug 17, 2026 |
| 144 | Notice of proposed sale | Aug 17, 2026 | — |
| 8-K |
Current report
Material agreement
|
Aug 12, 2026 | Aug 12, 2026 |
| 4 | Insider transaction | Aug 7, 2026 | Aug 5, 2026 |
| 4 | Insider transaction | Aug 3, 2026 | Aug 3, 2026 |
| 4 | Insider transaction | Aug 3, 2026 | Aug 3, 2026 |
| 4 | Insider transaction | Aug 3, 2026 | Aug 3, 2026 |
| 144 | Notice of proposed sale | Aug 3, 2026 | — |
| 144 | Notice of proposed sale | Aug 3, 2026 | — |
| 144 | Notice of proposed sale | Aug 3, 2026 | — |
| 8-K/A |
Amended current report
Officer or director change
|
Aug 3, 2026 | Feb 24, 2026 |
| S-8 | Employee stock plan registration | Jul 28, 2026 | — |
| 10-Q | Quarterly report | Jul 28, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Jul 28, 2026 | Jul 28, 2026 |
| 8-K |
Current report
Agreement ended
|
Jul 8, 2026 | Jul 6, 2026 |
| 4 | Insider transaction | Jul 6, 2026 | Jul 6, 2026 |
| 144 | Notice of proposed sale | Jul 6, 2026 | — |
| 4 | Insider transaction | Jul 1, 2026 | Jul 1, 2026 |
| 144 | Notice of proposed sale | Jul 1, 2026 | — |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Jun 15, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 12, 2026 | Jun 12, 2026 |
| 144 | Notice of proposed sale | Jun 12, 2026 | — |
| 4 | Insider transaction | Jun 4, 2026 | Jun 4, 2026 |
| 144 | Notice of proposed sale | Jun 4, 2026 | — |
| 4 | Insider transaction | Jun 1, 2026 | Jun 1, 2026 |
| 144 | Notice of proposed sale | Jun 1, 2026 | — |
| 4 | Insider transaction | May 29, 2026 | May 29, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 20, 2026 |
| 4/A | Primary document | May 22, 2026 | May 20, 2026 |
| 4/A | Primary document | May 22, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 20, 2026 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 20, 2026 | May 20, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| DEFA14A | Additional proxy material | May 13, 2026 | — |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
May 12, 2026 | May 12, 2026 |
| 10-Q | Quarterly report | May 5, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 5, 2026 | May 5, 2026 |
| 4 | Insider transaction | May 4, 2026 | May 4, 2026 |
| 144 | Notice of proposed sale | May 4, 2026 | — |
| 4 | Insider transaction | May 1, 2026 | May 1, 2026 |
| 8-K/A | Amended current report | May 1, 2026 | Feb 12, 2026 |
| 144 | Notice of proposed sale | May 1, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 28, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 28, 2026 | — |
| 4 | Insider transaction | Apr 13, 2026 | Apr 11, 2026 |
| 4 | Insider transaction | Apr 6, 2026 | Apr 6, 2026 |
| ARS | Annual report to shareholders | Apr 6, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 6, 2026 | — |
| DEF 14A | Proxy statement | Apr 6, 2026 | May 20, 2026 |
| 144 | Notice of proposed sale | Apr 6, 2026 | — |
| 4 | Insider transaction | Apr 1, 2026 | Apr 1, 2026 |
| 144 | Notice of proposed sale | Apr 1, 2026 | — |
| PRE 14A | Preliminary proxy statement | Mar 27, 2026 | May 20, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 26, 2026 | — |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 144 | Notice of proposed sale | Mar 3, 2026 | — |
| 144 | Notice of proposed sale | Mar 2, 2026 | — |
| 144 | Notice of proposed sale | Mar 2, 2026 | — |
| 144 | Notice of proposed sale | Mar 2, 2026 | — |
| 4 | Insider transaction | Feb 27, 2026 | Feb 26, 2026 |
| 4 | Insider transaction | Feb 27, 2026 | Feb 26, 2026 |
| 4 | Insider transaction | Feb 27, 2026 | Feb 26, 2026 |
| 4 | Insider transaction | Feb 27, 2026 | Feb 26, 2026 |
| 4 | Insider transaction | Feb 27, 2026 | Feb 26, 2026 |
| 4 | Insider transaction | Feb 25, 2026 | Feb 23, 2026 |
| 4 | Insider transaction | Feb 25, 2026 | Feb 23, 2026 |
| 4 | Insider transaction | Feb 25, 2026 | Feb 23, 2026 |
| 4 | Insider transaction | Feb 25, 2026 | Feb 23, 2026 |
| 4 | Insider transaction | Feb 25, 2026 | Feb 23, 2026 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Feb 25, 2026 | Feb 24, 2026 |
| 10-K | Annual report | Feb 25, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 25, 2026 | Feb 25, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 17, 2026 | — |
| 8-K |
Current report
Material agreement, Agreement ended, Acquisition or sale of assets, New debt, Regulation FD disclosure
|
Feb 12, 2026 | Feb 12, 2026 |
| 4 | Insider transaction | Feb 6, 2026 | Feb 5, 2026 |
| 4 | Insider transaction | Feb 6, 2026 | Feb 5, 2026 |
| 4 | Insider transaction | Feb 6, 2026 | Feb 5, 2026 |
| 4 | Insider transaction | Feb 6, 2026 | Feb 5, 2026 |
| 4 | Insider transaction | Feb 6, 2026 | Feb 5, 2026 |
| 4 | Insider transaction | Feb 2, 2026 | Feb 2, 2026 |
| 4 | Insider transaction | Feb 2, 2026 | Feb 2, 2026 |
| 144 | Notice of proposed sale | Feb 2, 2026 | — |
| 144 | Notice of proposed sale | Feb 2, 2026 | — |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jan 12, 2026 | Jan 12, 2026 |
| 144 | Notice of proposed sale | Jan 8, 2026 | — |
| 4 | Insider transaction | Jan 8, 2026 | Jan 8, 2026 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Jan 6, 2026 | Jan 6, 2026 |
| 4 | Insider transaction | Jan 2, 2026 | Jan 2, 2026 |
| 144 | Notice of proposed sale | Jan 2, 2026 | — |
| 4 | Insider transaction | Dec 5, 2025 | Dec 3, 2025 |
| 144 | Notice of proposed sale | Dec 3, 2025 | — |
| 4 | Insider transaction | Dec 1, 2025 | Dec 1, 2025 |
| 144 | Notice of proposed sale | Dec 1, 2025 | — |
| 8-K |
Current report
Material agreement, New debt, Regulation FD disclosure
|
Nov 19, 2025 | Nov 18, 2025 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Nov 12, 2025 | Nov 12, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Nov 10, 2025 | — |
| 4 | Insider transaction | Nov 3, 2025 | Nov 3, 2025 |
| 144 | Notice of proposed sale | Nov 3, 2025 | — |
| 10-Q | Quarterly report | Oct 28, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Oct 28, 2025 | Oct 28, 2025 |
| 8-K |
Current report
Material agreement, Results of operations, New debt, Regulation FD disclosure
|
Oct 22, 2025 | Oct 22, 2025 |
| 4 | Insider transaction | Oct 15, 2025 | Oct 15, 2025 |
| 144 | Notice of proposed sale | Oct 15, 2025 | — |
| 4 | Insider transaction | Oct 10, 2025 | Oct 8, 2025 |
| 3 | Initial insider ownership | Sep 23, 2025 | Sep 15, 2025 |
| 8-K |
Current report
Material agreement, Other events
|
Sep 12, 2025 | Aug 15, 2025 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Sep 12, 2025 | Sep 12, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 8, 2025 | Sep 8, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| 4 | Insider transaction | Aug 4, 2025 | Aug 3, 2025 |
| S-8 | Employee stock plan registration | Jul 29, 2025 | — |
| 10-Q | Quarterly report | Jul 29, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Jul 29, 2025 | Jul 29, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Jul 21, 2025 | Jul 21, 2025 |
| 4 | Insider transaction | Jun 10, 2025 | Jun 9, 2025 |
| 4 | Insider transaction | Jun 10, 2025 | Jun 8, 2025 |
| 144 | Notice of proposed sale | Jun 10, 2025 | — |
| 144 | Notice of proposed sale | Jun 9, 2025 | — |
| 4 | Insider transaction | Jun 2, 2025 | May 31, 2025 |
| 4 | Insider transaction | Jun 2, 2025 | May 31, 2025 |
| 4 | Insider transaction | Jun 2, 2025 | May 31, 2025 |
| 4 | Insider transaction | Jun 2, 2025 | May 31, 2025 |
| 4 | Insider transaction | Jun 2, 2025 | May 31, 2025 |
| 4 | Insider transaction | Jun 2, 2025 | May 31, 2025 |
| 4 | Insider transaction | Jun 2, 2025 | May 31, 2025 |
| 4 | Insider transaction | Jun 2, 2025 | May 31, 2025 |
| 4 | Insider transaction | May 23, 2025 | May 21, 2025 |
| 4 | Insider transaction | May 23, 2025 | May 21, 2025 |
| 4 | Insider transaction | May 23, 2025 | May 21, 2025 |
| 4 | Insider transaction | May 23, 2025 | May 21, 2025 |
| 4 | Insider transaction | May 23, 2025 | May 21, 2025 |
| 4 | Insider transaction | May 23, 2025 | May 21, 2025 |
| 4 | Insider transaction | May 23, 2025 | May 21, 2025 |
| 4 | Insider transaction | May 23, 2025 | May 21, 2025 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 21, 2025 | May 21, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 13, 2025 | — |
| DEFA14A | Additional proxy material | May 12, 2025 | — |
| 10-Q | Quarterly report | May 1, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 1, 2025 | May 1, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 28, 2025 | — |
| 8-K |
Current report
Other events
|
Apr 16, 2025 | Apr 14, 2025 |
| 4 | Insider transaction | Apr 14, 2025 | Apr 11, 2025 |
| ARS | Annual report to shareholders | Apr 7, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Apr 7, 2025 | — |
| DEF 14A | Proxy statement | Apr 7, 2025 | May 21, 2025 |
| PRE 14A | Preliminary proxy statement | Mar 28, 2025 | May 21, 2025 |
| 4 | Insider transaction | Feb 28, 2025 | Feb 26, 2025 |
| 4 | Insider transaction | Feb 28, 2025 | Feb 26, 2025 |
| 4 | Insider transaction | Feb 28, 2025 | Feb 26, 2025 |
| 4 | Insider transaction | Feb 28, 2025 | Feb 26, 2025 |
| 4 | Insider transaction | Feb 28, 2025 | Feb 26, 2025 |
| 4 | Insider transaction | Feb 28, 2025 | Feb 26, 2025 |
| 4 | Insider transaction | Feb 25, 2025 | Feb 22, 2025 |
| 4 | Insider transaction | Feb 25, 2025 | Feb 22, 2025 |
| 4 | Insider transaction | Feb 25, 2025 | Feb 22, 2025 |
| 4 | Insider transaction | Feb 25, 2025 | Feb 22, 2025 |
| 4 | Insider transaction | Feb 25, 2025 | Feb 22, 2025 |
| 4 | Insider transaction | Feb 25, 2025 | Feb 22, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 19, 2025 |
| 4 | Insider transaction | Feb 14, 2025 | Feb 12, 2025 |
| 144 | Notice of proposed sale | Feb 13, 2025 | — |
| 10-K | Annual report | Feb 12, 2025 | Dec 31, 2024 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Pharmaceutical Preparations (SIC 2834)
- Listed as
- ALKS (Nasdaq)
- Fiscal year ends
- December 31
- Headquarters
- Dublin 4, Ireland
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1520262
- Former names
- ANTLER SCIENCE TWO PLC (until Aug 5, 2011); Antler Science Two Ltd (until Aug 2, 2011)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.