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sellWeak cluster of 6

Milton C Blackmore sold $45k of IOSP

director at INNOSPEC INC.. 594 shares at an average of $76.56, traded Feb 27, 2026, filed Mar 3, 2026.

Warning score
36
Value
$45k
594 shares
Holdings after
10,530
-5% from before
From 52-week low
+8%
low $69.80, close $75.69
From 52-week high
-25%
high $100.60, as of Feb 27, 2026

Score components

  • Role
    Director
    +15
  • Trade size
    $45k at market
    +6
  • Share of holdings sold
    Sold 5.3% of holdings
    0
  • Cluster
    6 insiders selling within 14 days
    +15

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 -3.4%, 3m +8.2%, 6m +22.7%.

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.

IOSPOct 9, 2026 · close 95.65
Since filing Mar 3, 2026: +26.7%SPY +15.3% · excess +11.4%

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 0001193125-26-089359, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Feb 27, 2026SOpen-market sale
Common Stock
-594$76.56$45k10,530Mar 3, 2026

Related signals

Other insiders at INNOSPEC INC. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
36Weak
IOSPsell 6
INNOSPEC INC.
Milton C Blackmore
director
$45k
594 shares
-5%
54Moderate
IOSPsell 6
INNOSPEC INC.
Ian Cleminson
EVP & CFO
$182k
2,380 shares
-10%
36Weak
IOSPsell 6
INNOSPEC INC.
David Landless
director
$45k
594 shares
-7%
30Weak
IOSPsell 6
INNOSPEC INC.
Claudia Poccia
director
$9,110
119 shares
-2%
36Weak
IOSPsell 6
INNOSPEC INC.
Larry PADFIELD
director
$45k
594 shares
-6%
54Moderate
IOSPsell 6
INNOSPEC INC.
Ian Cleminson
EVP & CFO
$182k
2,380 shares
-10%
39Weak
IOSPsell 6
INNOSPEC INC.
David B. Jones
SVP, GC & CCO
$78k
1,028 shares
-7%
36Weak
IOSPsell 6
INNOSPEC INC.
David Landless
director
$45k
594 shares
-7%
30Weak
IOSPsell 6
INNOSPEC INC.
Claudia Poccia
director
$9,110
119 shares
-2%
36Weak
IOSPsell 6
INNOSPEC INC.
Larry PADFIELD
director
$45k
594 shares
-6%

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.

Milton C Blackmore sold $45k of IOSP | InsiderTell