CERS: Cerus Corporation insider trading, 5% holders and institutional ownership
From public SEC filings: open-market insider purchases and sales (Form 4, last 180 days), holders of 5% or more (Schedules 13D and 13G) and institutional ownership (Form 13F). Insider and 5% data delayed 48 hours.
Insider trading
0 open-market buys totaling - and 0 sales totaling - in the last 180 days.
Activist and 5% holders
| Filed | What | Holder | Stake | Change | Filing |
|---|---|---|---|---|---|
| 2026-08-14 | Fell below 5% | Baker Bros. Advisors LP | 3.20% | SEC | |
| 2026-08-14 | 13G amendment | ARK Investment Management LLC | 8.95% | SEC | |
| 2026-08-13 | Fell below 5% | Soleus Capital Master Fund, L.P. | 1.20% | SEC |
Institutional ownership (Q2 2026)
186 institutions reported holding $425.64M of Cerus Corporation on Form 13F (170 the quarter before). 35 opened a new position and 17 sold out. Shares held by institutions: -1%.
| Largest holders | Shares | Value |
|---|---|---|
| BlackRock, Inc. | 22,215,127 | $64.87M |
| ARK Investment Management LLC | 17,932,099 | $52.36M |
| VANGUARD CAPITAL MANAGEMENT LLC | 8,563,424 | $25.01M |
| BAKER BROS. ADVISORS LP | 6,395,431 | $18.67M |
| D. E. Shaw & Co., Inc. | 5,485,983 | $16.02M |
| GEODE CAPITAL MANAGEMENT, LLC | 5,119,019 | $14.95M |
| STATE STREET CORP | 4,753,962 | $13.88M |
| Senvest Management, LLC | 4,614,061 | $13.47M |
| Sumitomo Mitsui Trust Group, Inc. | 4,139,532 | $12.09M |
| Amova Asset Management Americas, Inc. | 4,132,534 | $12.07M |
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