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sellWeak cluster of 210b5-1 plan

Donald W DeGolyer sold $188k of EBS

director at Emergent BioSolutions Inc.. 17,801 shares at an average of $10.54, traded Nov 10, 2025, filed Nov 12, 2025.

Warning score
20
Value
$188k
17,801 shares
Holdings after
119,858
-13% from before
From 52-week low
+158%
low $4.26, close $10.99
From 52-week high
-14%
high $12.84, as of Nov 10, 2025

Score components

  • Role
    Director
    +15
  • Trade size
    $188k at market
    +12
  • Share of holdings sold
    Sold 13% of holdings
    +5
  • Cluster
    2 insiders selling within 14 days
    +8
  • 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.

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.

EBSOct 9, 2026 · close 7.06
Since filing Nov 12, 2025: -34.7%SPY +15.2% · excess -49.8%

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 0001583098-25-000005, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Nov 10, 2025SOpen-market sale
Common Stock10b5-1
-17,801$10.54$188k119,858Nov 12, 2025

Related signals

Other insiders at Emergent BioSolutions Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
19Weak
EBSsell 210b5-1
Emergent BioSolutions Inc.
Donald W DeGolyer
director
$126k
17,800 shares
-14%
3Weak
EBSsell 210b5-1
Emergent BioSolutions Inc.
Paul Anthony Williams
SVP, Products Business
$20k
3,000 shares
-2%
18Weak
EBSsell
Emergent BioSolutions Inc.
Ronald Richard
director
$263k
21,984 shares
-21%
12Weak
EBSsell 210b5-1
Emergent BioSolutions Inc.
Sujata Tyagi Dayal
director
$86k
8,552 shares
-9%
14Weak
EBSsell10b5-1
Emergent BioSolutions Inc.
Coleen Glessner
EVP, Quality & Ethics, and CPL
$306k
30,608 shares
-17%
11Weak
EBSsell 210b5-1
Emergent BioSolutions Inc.
Kathryn C Zoon
director
$63k
7,086 shares
-9%
31Weak
EBSsell 2
Emergent BioSolutions Inc.
Donald W DeGolyer
director
$68k
7,844 shares
-5%
2Weak
EBSsell10b5-1
Emergent BioSolutions Inc.
Keith Katkin
director
$49k
7,844 shares
-8%
54Moderate
EBSbuy
Emergent BioSolutions Inc.
Joseph C Papa
President and CEO
$350k
60,000 shares
+21%
35Weak
EBSsell 2
Emergent BioSolutions Inc.
Kathryn C Zoon
director
$57k
10,000 shares
-18%

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.

Donald W DeGolyer sold $188k of EBS | InsiderTell