Filing Manager
BAKER BROS. ADVISORS LP
Reporting Manager
Julian C. Baker
Symbol
CERS
Shares outstanding
189,760,412 shares
Disclosed Ownership
12,903,708 shares
Ownership
6.8%
Form type
SCHEDULE 13G/A
Filing time
14 Aug 2025, 16:26:01 UTC
Date of event
30 Jun 2025
Next filing
14 Nov 2025

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Quoteable Key Fact

"BAKER BROS. ADVISORS LP disclosed 6.8% ownership in Cerus Corporation Common Stock, par value $0.001 per share (CERS) on 30 Jun 2025."

Quick Takeaways

  • BAKER BROS. ADVISORS LP filed SCHEDULE 13G/A for Cerus Corporation Common Stock, par value $0.001 per share (CERS).
  • Disclosed ownership: 6.8%.
  • Date of event: 30 Jun 2025.

What Changed

  • No earlier schedule filing is available for direct comparison.
  • Current filing was accepted on 14 Aug 2025, 16:26.

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 Filing

Reporting Managers (4)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Baker Bros. Advisors LP 6.7% 12,883,844 12,883,844 0 /s/ Scott L. Lessing Scott L. Lessing/ President, Baker Bros. Advisors (GP) LLC, its general partner
Baker Bros. Advisors (GP) LLC 6.7% 12,883,844 12,883,844 0 /s/ Scott L. Lessing Scott L. Lessing/ President
Julian C. Baker 6.8% 12,903,708 12,903,708 0 /s/ Julian C. Baker Julian C. Baker
Felix J. Baker 6.8% 12,903,708 12,903,708 0 /s/ Felix J. Baker Felix J. Baker