CERS
Cerus Corporation
NASDAQ: CERS · HEALTHCARE · MEDICAL DEVICES
$2.42
+0.83% today
Updated 2026-10-28
Market cap
$465.52M
P/E ratio
—
P/S ratio
2.10x
EPS (TTM)
$-0.03
Dividend yield
—
52W range
$1 – $3
Volume
1.7M
Cerus Corporation (CERS) Insider transactions
Net insider activity
Net buying (5,278,897 shares)
Buy transactions
45
Sell transactions
55
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-08-17 | JENSEN, CHRYSTAL | Chief Legal Officer | Sale | 30,000 | $2.98 | $89529.00 |
| 2026-07-16 | JAYARAMAN, VIVEK K | Chief Executive Officer | Sale | 16,666 | $3.16 | $52664.56 |
| 2026-07-01 | JAYARAMAN, VIVEK K | Chief Operating Officer | Buy | 369,686 | — | — |
| 2026-07-01 | JAYARAMAN, VIVEK K | Chief Operating Officer | Buy | 554,529 | — | — |
| 2026-06-30 | JENSEN, CHRYSTAL | Chief Legal Officer | Sale | 55,000 | — | — |
| 2026-06-30 | JENSEN, CHRYSTAL | Chief Legal Officer | Sale | 24,329 | $2.94 | $71597.81 |
| 2026-06-30 | JAYARAMAN, VIVEK K | Chief Operating Officer | Sale | 80,000 | — | — |
| 2026-06-30 | JAYARAMAN, VIVEK K | Chief Operating Officer | Sale | 42,359 | $2.94 | $124658.30 |
| 2026-06-30 | GREENMAN, WILLIAM MARINER | Director, President and CEO | Sale | 192,500 | — | — |
| 2026-06-30 | GREENMAN, WILLIAM MARINER | Director, President and CEO | Sale | 101,919 | $2.94 | $299937.43 |
| 2026-06-30 | GREEN, KEVIN DENNIS | Chief Financial Officer | Sale | 63,600 | — | — |
| 2026-06-30 | GREEN, KEVIN DENNIS | Chief Financial Officer | Sale | 33,676 | $2.94 | $99105.10 |
| 2026-06-09 | BJERKHOLT, ERIC | Director | Sale | 20,454 | $2.60 | $53180.40 |
| 2026-06-02 | WITNEY, FRANK | Director | Buy | 60,000 | — | — |
| 2026-06-02 | SHAN, HUA | Director | Buy | 60,000 | — | — |
| 2026-06-02 | NACHTSHEIM, JAMI K | Director | Buy | 60,000 | — | — |
| 2026-06-02 | LUCENA, ANN | Director | Buy | 60,000 | — | — |
| 2026-06-02 | GREGORY, DEAN A. | Director | Buy | 60,000 | — | — |
| 2026-06-02 | BJERKHOLT, ERIC | Director | Buy | 60,000 | — | — |
| 2026-05-29 | JAYARAMAN, VIVEK K | Chief Operating Officer | Sale | 16,667 | $3.00 | $50001.00 |
| 2026-05-01 | JAYARAMAN, VIVEK K | Chief Operating Officer | Sale | 16,667 | $3.00 | $50001.00 |
| 2026-04-01 | JENSEN, CHRYSTAL | Chief Legal Officer | Buy | 200,000 | — | — |
| 2026-04-01 | GREEN, KEVIN DENNIS | Chief Financial Officer | Buy | 200,000 | — | — |
| 2026-03-12 | JAYARAMAN, VIVEK K | Chief Operating Officer | Sale | 165,200 | $1.66 | $273769.44 |
| 2026-03-12 | GREENMAN, WILLIAM MARINER | Director, President and CEO | Sale | 447,757 | $1.66 | $742022.90 |
| 2026-03-12 | GREEN, KEVIN DENNIS | Chief Financial Officer | Sale | 127,544 | $1.66 | $211365.92 |
| 2026-03-12 | BENJAMIN, RICHARD J | Chief Medical Officer | Sale | 101,740 | $1.66 | $168603.53 |
| 2026-03-09 | BENJAMIN, RICHARD J | Chief Medical Officer | Sale | 40,426 | $1.88 | $76029.18 |
| 2026-03-06 | JENSEN, CHRYSTAL | Chief Legal Officer | Sale | 30,845 | $2.01 | $61859.65 |
| 2026-03-06 | JAYARAMAN, VIVEK K | Chief Operating Officer | Sale | 34,094 | $2.01 | $68375.52 |
| 2026-03-06 | GREENMAN, WILLIAM MARINER | Director, President and CEO | Sale | 78,187 | $2.01 | $156804.03 |
| 2026-03-06 | GREEN, KEVIN DENNIS | Chief Financial Officer | Sale | 27,796 | $2.01 | $55744.88 |
| 2026-03-06 | BENJAMIN, RICHARD J | Chief Medical Officer | Sale | 24,235 | $2.01 | $48603.29 |
| 2026-03-05 | JENSEN, CHRYSTAL | Chief Legal Officer | Buy | 55,220 | — | — |
| 2026-03-05 | JAYARAMAN, VIVEK K | Chief Operating Officer | Buy | 80,320 | — | — |
| 2026-03-05 | GREENMAN, WILLIAM MARINER | Director, President and CEO | Buy | 193,270 | — | — |
| 2026-03-05 | GREEN, KEVIN DENNIS | Chief Financial Officer | Buy | 63,854 | — | — |
| 2026-03-05 | GREEN, KEVIN DENNIS | Chief Financial Officer | Sale | 55,225 | $2.06 | $113901.56 |
| 2026-03-05 | BENJAMIN, RICHARD J | Chief Medical Officer | Sale | 61,233 | $2.06 | $126299.19 |
| 2026-03-05 | BENJAMIN, RICHARD J | Chief Medical Officer | Buy | 55,220 | — | — |
| 2026-03-02 | JENSEN, CHRYSTAL | Chief Legal Officer | Buy | 300,000 | — | — |
| 2026-03-02 | JAYARAMAN, VIVEK K | Chief Operating Officer | Buy | 420,000 | — | — |
| 2026-03-02 | GREENMAN, WILLIAM MARINER | Director, President and CEO | Buy | 1,200,000 | — | — |
| 2026-03-02 | GREEN, KEVIN DENNIS | Chief Financial Officer | Buy | 300,000 | — | — |
| 2026-03-02 | BENJAMIN, RICHARD J | Chief Medical Officer | Buy | 264,000 | — | — |
| 2025-11-24 | JENSEN, CHRYSTAL | Chief Legal Officer | Sale | 55,000 | $1.70 | $93500.00 |
| 2025-08-25 | GREGORY, DEAN A. | Director | Buy | 25,000 | $1.25 | $31250.00 |
| 2025-06-03 | WITNEY, FRANK | Director | Buy | 60,000 | — | — |
| 2025-06-03 | SWISHER, DANIEL N JR | Director | Buy | 60,000 | — | — |
| 2025-06-03 | SHAN, HUA | Director | Buy | 60,000 | — | — |
| 2025-06-03 | NACHTSHEIM, JAMI K | Director | Buy | 60,000 | — | — |
| 2025-06-03 | MOORE, TIMOTHY L. | Director | Buy | 60,000 | — | — |
| 2025-06-03 | LUCENA, ANN | Director | Buy | 60,000 | — | — |
| 2025-06-03 | BJERKHOLT, ERIC | Director | Buy | 60,000 | — | — |
| 2025-03-14 | JENSEN, CHRYSTAL | Chief Legal Officer | Sale | 30,075 | $1.45 | $43608.75 |
| 2025-03-14 | JAYARAMAN, VIVEK K | Chief Operating Officer | Sale | 46,004 | $1.45 | $66705.80 |
| 2025-03-14 | GREENMAN, WILLIAM MARINER | Director, President and CEO | Sale | 122,827 | $1.45 | $178099.15 |
| 2025-03-14 | GREEN, KEVIN DENNIS | Chief Financial Officer | Sale | 36,740 | $1.45 | $53273.00 |
| 2025-03-14 | BENJAMIN, RICHARD J | Chief Medical Officer | Sale | 30,075 | $1.45 | $43608.75 |
| 2025-03-13 | JENSEN, CHRYSTAL | Chief Legal Officer | Sale | 18,949 | $1.45 | $27476.05 |
| 2025-03-13 | JAYARAMAN, VIVEK K | Chief Operating Officer | Sale | 29,985 | $1.45 | $43478.25 |
| 2025-03-13 | GREENMAN, WILLIAM MARINER | Director, President and CEO | Sale | 71,086 | $1.45 | $103074.70 |
| 2025-03-13 | GREEN, KEVIN DENNIS | Chief Financial Officer | Sale | 23,147 | $1.45 | $33563.15 |
| 2025-03-13 | BENJAMIN, RICHARD J | Chief Medical Officer | Sale | 18,949 | $1.45 | $27476.05 |
| 2025-03-12 | JENSEN, CHRYSTAL | Chief Legal Officer | Sale | 113,008 | $1.66 | $187276.86 |
| 2025-03-07 | JENSEN, CHRYSTAL | Chief Legal Officer | Sale | 27,457 | $1.50 | $41130.59 |
| 2025-03-07 | JAYARAMAN, VIVEK K | Chief Operating Officer | Sale | 33,999 | $1.50 | $50930.50 |
| 2025-03-07 | GREENMAN, WILLIAM MARINER | Director, President and CEO | Sale | 60,984 | $1.50 | $91354.03 |
| 2025-03-07 | GREEN, KEVIN DENNIS | Chief Financial Officer | Sale | 31,148 | $1.50 | $46659.70 |
| 2025-03-07 | BENJAMIN, RICHARD J | Chief Medical Officer | Sale | 26,139 | $1.50 | $39156.22 |
| 2025-03-06 | JENSEN, CHRYSTAL | Chief Legal Officer | Buy | 385,000 | — | — |
| 2025-03-06 | JENSEN, CHRYSTAL | Chief Legal Officer | Buy | 69,577 | — | — |
| 2025-03-06 | JAYARAMAN, VIVEK K | Chief Operating Officer | Buy | 545,000 | — | — |
| 2025-03-06 | JAYARAMAN, VIVEK K | Chief Operating Officer | Buy | 90,486 | — | — |
| 2025-03-06 | GREENMAN, WILLIAM MARINER | Director, President and CEO | Buy | 975,000 | — | — |
| 2025-03-06 | GREENMAN, WILLIAM MARINER | Director, President and CEO | Buy | 165,742 | — | — |
| 2025-03-06 | GREEN, KEVIN DENNIS | Chief Financial Officer | Buy | 392,500 | — | — |
| 2025-03-06 | GREEN, KEVIN DENNIS | Chief Financial Officer | Buy | 80,540 | — | — |
| 2025-03-06 | BENJAMIN, RICHARD J | Chief Medical Officer | Buy | 300,000 | — | — |
| 2025-03-06 | BENJAMIN, RICHARD J | Chief Medical Officer | Buy | 66,565 | — | — |
| 2025-03-04 | JENSEN, CHRYSTAL | Chief Legal Officer | Sale | 60,000 | $1.59 | $95142.00 |
| 2025-03-04 | JENSEN, CHRYSTAL | Chief Legal Officer | Sale | 6,292 | $1.55 | $9743.16 |
| 2025-03-04 | JAYARAMAN, VIVEK K | Chief Operating Officer | Sale | 10,780 | $1.55 | $16692.83 |
| 2025-03-04 | GREENMAN, WILLIAM MARINER | Director, President and CEO | Sale | 23,023 | $1.55 | $35651.12 |
| 2025-03-04 | GREEN, KEVIN DENNIS | Chief Financial Officer | Sale | 8,386 | $1.55 | $12985.72 |
| 2025-03-04 | BENJAMIN, RICHARD J | Chief Medical Officer | Sale | 6,292 | $1.55 | $9743.16 |
| 2025-03-03 | JENSEN, CHRYSTAL | Chief Legal Officer | Sale | 13,912 | — | — |
| 2025-03-03 | JENSEN, CHRYSTAL | Chief Legal Officer | Buy | 13,912 | — | — |
| 2025-03-03 | JAYARAMAN, VIVEK K | Chief Operating Officer | Sale | 23,850 | — | — |
| 2025-03-03 | JAYARAMAN, VIVEK K | Chief Operating Officer | Buy | 23,850 | — | — |
| 2025-03-03 | GREENMAN, WILLIAM MARINER | Director, President and CEO | Sale | 57,637 | — | — |
| 2025-03-03 | GREENMAN, WILLIAM MARINER | Director, President and CEO | Buy | 57,637 | — | — |
| 2025-03-03 | GREEN, KEVIN DENNIS | Chief Financial Officer | Sale | 18,550 | — | — |
| 2025-03-03 | GREEN, KEVIN DENNIS | Chief Financial Officer | Sale | 60,656 | $1.58 | $95672.71 |
| 2025-03-03 | GREEN, KEVIN DENNIS | Chief Financial Officer | Buy | 18,550 | — | — |
| 2025-03-03 | BENJAMIN, RICHARD J | Chief Medical Officer | Sale | 13,912 | — | — |
| 2025-03-03 | BENJAMIN, RICHARD J | Chief Medical Officer | Sale | 51,254 | $1.58 | $80827.56 |
| 2025-03-03 | BENJAMIN, RICHARD J | Chief Medical Officer | Buy | 13,912 | — | — |
| 2025-02-26 | JENSEN, CHRYSTAL | Chief Legal Officer | Buy | 13,912 | — | — |
| 2025-02-26 | JAYARAMAN, VIVEK K | Chief Operating Officer | Buy | 23,850 | — | — |
Frequently asked questions
Are CERS insiders buying or selling?
Over the transactions on record, CERS insiders have been net sellers, with about $4.52M in stock sold across 55 sales, against 1 open-market purchase.
Does insider selling at CERS mean the stock will fall?
Not by itself. Most executive selling is pre-scheduled through 10b5-1 plans filed months in advance, and insiders sell for diversification, taxes, and liquidity far more often than out of any view on the price. Insider buying is the stronger signal, especially when several insiders buy around the same time, because there is usually only one reason to put personal cash into the stock.
Which CERS insiders are selling the most?
Recent selling is concentrated in a few names. GREENMAN, WILLIAM MARINER accounts for the largest share on record, with about $1.61M sold. Selling by one or two individuals matters less than broad selling across the whole leadership team, which is the pattern worth watching.