Skip to content
sellWeak cluster of 510b5-1 plan

William Mariner Greenman sold $281k of CERS

President and CEO at CERUS CORP. 193,913 shares at an average of $1.45, traded Mar 13, 2025, filed Mar 17, 2025.

Warning score
34
Value
$281k
193,913 shares
Holdings after
4,115,845
-4% from before
From 52-week low
0%
low $1.39, close $1.39
From 52-week high
-35%
high $2.15, as of Mar 13, 2025

Score components

  • Role
    CEO
    +25
  • Trade size
    $281k at market
    +14
  • Share of holdings sold
    Sold 4.5% of holdings
    0
  • Cluster
    5 insiders selling within 14 days
    +15
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

This signal so far: 1m -10.3%, 3m -2.8%, 6m -17.2%.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

CERSOct 13, 2026 · close 2.26
Since filing Mar 17, 2025: +55.9%SPY +39.9% · excess +16.0%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0000950170-25-040451, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Mar 13, 2025SOpen-market sale
Common Stock10b5-1
-71,086$1.45$103k4,238,672Mar 17, 2025
Mar 14, 2025SOpen-market sale
Common Stock10b5-1
-122,827$1.45$178k4,115,845Mar 17, 2025

Related signals

Other insiders at CERUS CORP and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
4Weak
CERSsell10b5-1
CERUS CORP
Chrystal Jensen
Chief Legal Officer
$90k
30,000 shares
-3%
12Weak
CERSsell10b5-1
CERUS CORP
Vivek K Jayaraman
Chief Executive Officer
$53k
16,666 shares
-1%
34Weak
CERSsell 410b5-1
CERUS CORP
William Mariner Greenman
President and CEO
$300k
101,919 shares
-2%
27Weak
CERSsell 410b5-1
CERUS CORP
Kevin Dennis Green
Chief Financial Officer
$99k
33,676 shares
-3%
18Weak
CERSsell 410b5-1
CERUS CORP
Chrystal Jensen
Chief Legal Officer
$72k
24,329 shares
-2%
25Weak
CERSsell 410b5-1
CERUS CORP
Vivek K Jayaraman
Chief Operating Officer
$125k
42,359 shares
-2%
30Weak
CERSsell 2
CERUS CORP
Eric Bjerkholt
director
$53k
20,454 shares
-7%
15Weak
CERSsell 210b5-1
CERUS CORP
Vivek K Jayaraman
Chief Operating Officer
$50k
16,667 shares
-1%
7Weak
CERSsell10b5-1
CERUS CORP
Vivek K Jayaraman
Chief Operating Officer
$50k
16,667 shares
-1%
26Weak
CERSsell 510b5-1
CERUS CORP
Richard J Benjamin
Chief Medical Officer
$169k
101,740 shares
-12%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

William Mariner Greenman sold $281k of CERS | InsiderTell