Quick Takeaways
- BAKER BROS. ADVISORS LP filed SCHEDULE 13G for Alkermes plc. Ordinary Shares, $0.01 per share (ALKS).
- Disclosed ownership: 6.1%.
- Date of event: 31 Dec 2025.
BAKER BROS. ADVISORS LP - 31 Dec 2025 SCHEDULE 13G Report for Alkermes plc. Ordinary Shares, $0.01 per share (ALKS)
- Filing Manager
- BAKER BROS. ADVISORS LP
- Reporting Manager
- Baker Bros. Advisors LP
- Symbol
- ALKS
- Shares outstanding
- 164,135,525 shares
- Disclosed Ownership
- 10,012,267 shares
- Ownership
- 6.1%
- Form type
- SCHEDULE 13G
- Filing time
- 17 Feb 2026, 16:25:36 UTC
- Date of event
- 31 Dec 2025
- SEC
- View on sec.gov
Quoteable Key Fact
"BAKER BROS. ADVISORS LP disclosed 6.1% ownership in Alkermes plc. Ordinary Shares, $0.01 per share (ALKS) on 31 Dec 2025."
What Changed
- No earlier schedule filing is available for direct comparison.
- Current filing was accepted on 17 Feb 2026, 16:25.
Why This Matters
- This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
- You can verify ownership claims directly against the original SEC filing.
Official SEC Source
Backed by Schedule 13D/13G
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
See Original FilingReporting Managers (4)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Baker Bros. Advisors LP | 6.1% | 10,012,267 | 10,012,267 | 0 | /s/ Scott L. Lessing | Scott L. Lessing/ President By: Baker Bros. Advisors (GP) LLC, its general partner | |
| Baker Bros. Advisors (GP) LLC | 6.1% | 10,012,267 | 10,012,267 | 0 | /s/ Scott L. Lessing | Scott L. Lessing/ President | |
| Julian C. Baker | 6.1% | 10,012,267 | 10,012,267 | 0 | /s/ Julian C. Baker | Julian C. Baker | |
| Felix J. Baker | 6.1% | 10,012,267 | 10,012,267 | 0 | /s/ Felix J. Baker | Felix J. Baker |