BAKER BROS. ADVISORS LP - 30 Sep 2025 SCHEDULE 13G/A Report for Cerus Corporation Common Stock, par value $0.001 per share (CERS)

Filing Manager
BAKER BROS. ADVISORS LP
Reporting Manager
Julian C. Baker
Security
Cerus Corporation Common Stock, par value $0.001 per share
Symbol
CERS
Shares outstanding
192,850,173 shares
Disclosed Ownership
10,028,209 shares
Ownership
5.2%
Form type
SCHEDULE 13G/A
Filing time
14 Nov 2025, 16:24:23 UTC
Date of event
30 Sep 2025
Previous filing
14 Aug 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 5.2% 10,008,345 10,008,345 0 /s/ Scott L. Lessing Scott L. Lessing/ President By: Baker Bros. Advisors (GP) LLC, its general partner
Baker Bros. Advisors (GP) LLC 5.2% 10,008,345 10,008,345 0 /s/ Scott L. Lessing Scott L. Lessing/ President
Julian C. Baker 5.2% 10,028,209 10,028,209 0 /s/ Julian C. Baker Julian C. Baker
Felix J. Baker 5.2% 10,028,209 10,028,209 0 /s/ Felix J. Baker Felix J. Baker