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sellModerate cluster of 3

Lawrence D Kingsley sold $7.1M of MIR

director at Mirion Technologies, Inc.. 300,000 shares at an average of $23.83, traded Nov 21, 2025, filed Nov 21, 2025.

Warning score
55
Value
$7.1M
300,000 shares
Holdings after
3,900,000
-7% from before
From 52-week low
+87%
low $12.70, close $23.80
From 52-week high
-20%
high $29.75, as of Nov 21, 2025

Score components

  • Role
    Director
    +15
  • Trade size
    $7.1M at market
    +25
  • Share of holdings sold
    Sold 7.1% of holdings
    0
  • Cluster
    3 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 -1.1%, 3m -10.6%, 6m -22.9%.

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.

MIROct 12, 2026 · close 16.25
Since filing Nov 21, 2025: -31.7%SPY +19.3% · excess -51.1%

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 0001628280-25-053585, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Nov 21, 2025SOpen-market sale
Class A Common Stockindirect: By Lawrence D. Kingsley Revocable Trust
-300,000$23.83$7.1M3,900,000Nov 21, 2025

Related signals

Other insiders at Mirion Technologies, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
36Weak
MIRbuy
Mirion Technologies, Inc.
Brian Schopfer
Chief Financial Officer
$312k
20,000 shares
+2%
36Weak
MIRsell
Mirion Technologies, Inc.
Christopher A. Moore
Chief Accounting Officer (PAO)
$165k
8,400 shares
-27%
40Moderate
MIRsell
Mirion Technologies, Inc.
Lawrence D Kingsley
director
$8.7M
350,000 shares
-9%
70Notable
MIRsell 4
Mirion Technologies, Inc.
Loic Eloy
Nuclear & Safety President
$1.2M
45,000 shares
-32%
30Weak
MIRsell 410b5-1
Mirion Technologies, Inc.
Emmanuelle Lee
Chief Legal Officer
$343k
12,500 shares
-13%
42Moderate
MIRsell 310b5-1
Mirion Technologies, Inc.
Brian Schopfer
Chief Financial Officer
$2.8M
100,000 shares
-10%
63Notable
MIRsell 2
Mirion Technologies, Inc.
Thomas D Logan
Chief Executive Officer
$11M
500,000 shares
-12%
50Moderate
MIRsell 2
Mirion Technologies, Inc.
Loic Eloy
Nuclear & Safety President
$472k
22,166 shares
-13%
27Weak
MIRsell10b5-1
Mirion Technologies, Inc.
Brian Schopfer
Chief Financial Officer
$1.6M
75,000 shares
-8%
68Notable
MIRsell 2
Mirion Technologies, Inc.
Lawrence D Kingsley
director
$9.0M
500,000 shares
-143%

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.

Lawrence D Kingsley sold $7.1M of MIR | InsiderTell