CERS (Cerus Corp)

Insider Trading Activity

Every open-market purchase and sale reported by CERS officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.

Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.

Form 4 Filings
50
most recent
Open-Market Buys
1
code P
Sales
16
code S
Reporting Insiders
23
current holders
CERS — Recent Form 4 Transactions (latest 2026-08-17)
FiledInsiderRole TypeSharesValue
2026-08-17 Chrystal Jensen Chief Legal Officer Sell
2026-07-20 Vivek K Jayaraman Chief Executive Officer Sell
2026-07-02 Chrystal Jensen Chief Legal Officer MIXED
2026-07-02 Vivek K Jayaraman Chief Operating Officer MIXED
2026-07-02 William Mariner Greenman President and CEO MIXED
2026-07-02 Kevin Dennis Green Chief Financial Officer MIXED
2026-06-11 ERIC BJERKHOLT Director Sell
2026-06-02 ERIC BJERKHOLT Director A
2026-06-02 Frank Witney Director A
2026-06-02 Ann Lucena Director A
2026-06-02 Dean A. Gregory Director A
2026-06-02 Hua Shan Director A
2026-06-02 JAMI K NACHTSHEIM Director A
2026-06-02 Vivek K Jayaraman Chief Operating Officer Sell
2026-05-05 Vivek K Jayaraman Chief Operating Officer Sell
2026-04-03 Kevin Dennis Green Chief Financial Officer A
2026-04-03 Chrystal Jensen Chief Legal Officer A
2026-03-16 Richard J Benjamin Chief Medical Officer Sell
2026-03-16 William Mariner Greenman President and CEO Sell
2026-03-16 Kevin Dennis Green Chief Financial Officer Sell
2026-03-16 Vivek K Jayaraman Chief Operating Officer Sell
2026-03-16 Chrystal Jensen Chief Legal Officer Sell
2026-03-10 Richard J Benjamin Chief Medical Officer MIXED
2026-03-09 Vivek K Jayaraman Chief Operating Officer MIXED
2026-03-09 Kevin Dennis Green Chief Financial Officer MIXED
2026-03-09 William Mariner Greenman President and CEO MIXED
2026-03-09 Chrystal Jensen Chief Legal Officer MIXED
2026-03-09 Richard J Benjamin Chief Medical Officer MIXED
2026-03-04 Vivek K Jayaraman Chief Operating Officer A
2026-03-04 Kevin Dennis Green Chief Financial Officer A
2026-03-04 Richard J Benjamin Chief Medical Officer A
2026-03-04 Chrystal Jensen Chief Legal Officer A
2026-03-04 William Mariner Greenman President and CEO A
2025-11-26 Chrystal Jensen Chief Legal Officer Sell
2025-08-25 Dean A. Gregory Director Buy
2025-06-04 Hua Shan Director A
2025-06-04 Daniel N Swisher JR Director A
2025-06-04 TIMOTHY L. MOORE Director A
2025-06-04 JAMI K NACHTSHEIM Director A
2025-06-04 ERIC BJERKHOLT Director A
2025-06-04 Ann Lucena Director A
2025-06-04 Frank Witney Director A
2025-03-17 Richard J Benjamin Chief Medical Officer Sell
2025-03-17 Chrystal Jensen Chief Legal Officer Sell
2025-03-17 Vivek K Jayaraman Chief Operating Officer Sell
2025-03-17 William Mariner Greenman President and CEO Sell
2025-03-17 Kevin Dennis Green Chief Financial Officer Sell
2025-03-10 Chrystal Jensen Chief Legal Officer MIXED
2025-03-10 Vivek K Jayaraman Chief Operating Officer MIXED
2025-03-10 Richard J Benjamin Chief Medical Officer MIXED
CERS — Current Insider Holders
InsiderRole Shares HeldValue
President and CEO 5,154,955
Chief Scientific Officer 2,354,100
Chief Executive Officer 2,232,211
Chief Financial Officer 1,095,864
Chief Legal Officer 936,657
Chief Medical Officer 777,361
SVP Reg. & Quality 511,242
Director 340,059
Director 268,362
Director 261,679
Director 232,284
Director 213,993
Director 207,045
Director 205,073
Director 192,386
Executive Officer and Director 189,457
Director 182,384
Director 163,420
Chief Financial Officer 156,825
Director 146,725
Vice President, R & D 43,836
Vice President, Legal Affairs 42,846
Director 18,921
How to read Form 4 activity

Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.

Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.

Full filing history and per-insider positions are on the CERS quote page; the site-wide leaderboard is on the insider transactions hub.