🕵️ Cerus Corp ($CERS)
SEC insider & ownership activity, last 12 months · CIK 1020214 · every row links its SEC filing
Over the last 12 months insiders sold $3.2M against $31K of open-market buying. Greenman William Mariner sold $1.2M through a 10b5-1 trading plan in 3 lots (Mar–Jun). 1 planned sale is pending, the largest $215K (Richard J Benjamin). No red-flag 8-Ks in the window.
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
1 buyer, $31K (1 lots) · 6 sellers, $3.2M (22 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Greenman William Mariner | 0 | – | 3 | $1.2M | Jun 30, 2026 |
| Vivek K. Jayaraman | 0 | – | 6 | $619K | Jul 16, 2026 |
| Green Kevin Dennis | 0 | – | 4 | $480K | Jun 30, 2026 |
| Richard J Benjamin | 0 | – | 4 | $420K | Mar 12, 2026 |
| Jensen Chrystal | 0 | – | 4 | $414K | Jun 30, 2026 |
| Eric Bjerkholt | 0 | – | 1 | $53K | Jun 9, 2026 |
| Dean A. Gregory | 1 | $31K | 0 | – | Aug 25, 2025 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| ARK Investment Management LLC | 11.2% | 13G | Feb 14, 2025 | filing ↗ | |
| ARK Investment Management LLC | 10.1% | 13G | Jul 30, 2025 | filing ↗ | |
| Catherine D. Wood | 10.1% | 13G | Jul 30, 2025 | filing ↗ | |
| Baker BROS. Advisors LP | 5.2% | 13G | Nov 14, 2025 | filing ↗ | |
| Baker BROS. Advisors (GP) LLC | 5.2% | 13G | Nov 14, 2025 | filing ↗ | |
| Julian C. Baker | 5.2% | 13G | Nov 14, 2025 | filing ↗ | |
| Felix J. Baker | 5.2% | 13G | Nov 14, 2025 | filing ↗ | |
| Soleus Capital Master Fund, L.P. | 5.1% | 13G | Mar 24, 2026 | filing ↗ | |
| Soleus Capital, LLC | 5.1% | 13G | Mar 24, 2026 | filing ↗ | |
| Soleus Capital Group, LLC | 5.1% | 13G | Mar 24, 2026 | filing ↗ | |
| Soleus Capital Management, L.P. | 5.1% | 13G | Mar 24, 2026 | filing ↗ | |
| Soleus GP, LLC | 5.1% | 13G | Mar 24, 2026 | filing ↗ | |
| Guy Levy | 5.1% | 13G | Mar 24, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Vivek K Jayaraman | $53K | Jul 16, 2026 | filing ↗ |
| Eric Bjerkholt | $53K | Jun 9, 2026 | filing ↗ |
| Vivek K Jayaraman | $50K | May 29, 2026 | filing ↗ |
| Richard J Benjamin | $215K | May 1, 2026 | filing ↗ |
| Vivek K Jayaraman | $50K | May 1, 2026 | filing ↗ |
| Richard J Benjamin | $76K | Mar 9, 2026 | filing ↗ |
| Kevin D Green | $114K | Mar 5, 2026 | filing ↗ |
| Richard J Benjamin | $126K | Mar 5, 2026 | filing ↗ |
| Chrystal Nikole Jensen | $94K | Nov 24, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Officer/director changes (5.02) | Jul 6, 2026 | filing ↗ |
| Material agreement (1.01) | Jun 5, 2026 | filing ↗ |
| Agreement terminated (1.02) | Jun 5, 2026 | filing ↗ |
| New financial obligation (2.03) | Jun 5, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jun 2, 2026 | filing ↗ |
| Shareholder vote (5.07) | Jun 2, 2026 | filing ↗ |
| Earnings (2.02) | Apr 30, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 30, 2026 | filing ↗ |
| Officer/director changes (5.02) | Apr 17, 2026 | filing ↗ |
| Officer/director changes (5.02) | Mar 11, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 11, 2026 | filing ↗ |
| Earnings (2.02) | Mar 2, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 2, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jan 19, 2026 | filing ↗ |
| Earnings (2.02) | Jan 11, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 11, 2026 | filing ↗ |
| Earnings (2.02) | Nov 6, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 6, 2025 | filing ↗ |
| Earnings (2.02) | Aug 5, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 5, 2025 | filing ↗ |