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sellWeak cluster of 410b5-1 plan

Keith Katkin sold $128k of EBS

director at Emergent BioSolutions Inc.. 15,481 shares at an average of $8.28, traded Apr 30, 2026, filed May 4, 2026.

Warning score
26
Value
$128k
15,481 shares
Holdings after
96,294
-14% from before
From 52-week low
+74%
low $4.74, close $8.23
From 52-week high
-41%
high $13.90, as of Apr 30, 2026

Score components

  • Role
    Director
    +15
  • Trade size
    $128k at market
    +11
  • Share of holdings sold
    Sold 14% of holdings
    +5
  • Cluster
    4 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 -7.1%, 3m -13.2%, 6m -.

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 May 4, 2026: -17.3%SPY +9.0% · excess -26.3%

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 0001314596-26-000002, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Apr 30, 2026AGrant or award
Common Stock10b5-1
+25,344$0.00$0111,775May 4, 2026
Apr 30, 2026SOpen-market sale
Common Stock10b5-1
-15,481$8.28$128k96,294May 4, 2026
Apr 30, 2026AGrant or award
Stock Options (Right to Buy)derivative10b5-1
+11,296$0.00$011,296May 4, 2026

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%
0Weak
EBSsell10b5-1
Emergent BioSolutions Inc.
Paul Anthony Williams
SVP, Products Business
$25k
3,000 shares
-2%
25Weak
EBSsell 410b5-1
Emergent BioSolutions Inc.
Sujata Tyagi Dayal
director
$116k
13,761 shares
-12%
26Weak
EBSsell 410b5-1
Emergent BioSolutions Inc.
Donald W DeGolyer
director
$130k
15,481 shares
-11%
26Weak
EBSsell 410b5-1
Emergent BioSolutions Inc.
Kathryn C Zoon
director
$144k
17,202 shares
-18%
1Weak
EBSsell10b5-1
Emergent BioSolutions Inc.
Paul Anthony Williams
SVP, Products Business
$34k
4,000 shares
-6%
18Weak
EBSsell
Emergent BioSolutions Inc.
Ronald Richard
director
$263k
21,984 shares
-21%
20Weak
EBSsell 210b5-1
Emergent BioSolutions Inc.
Donald W DeGolyer
director
$188k
17,801 shares
-13%
12Weak
EBSsell 210b5-1
Emergent BioSolutions Inc.
Sujata Tyagi Dayal
director
$86k
8,552 shares
-9%

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.

Keith Katkin sold $128k of EBS | InsiderTell