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
Security
Alkermes plc. Ordinary Shares, $0.01 per share
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

Reporting 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