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sellModerate

Lawrence D Kingsley sold $8.7M of MIR

director at Mirion Technologies, Inc.. 350,000 shares at an average of $24.73, traded Dec 10, 2025, filed Dec 12, 2025.

Warning score
40
Value
$8.7M
350,000 shares
Holdings after
3,509,075
-9% from before
From 52-week low
+99%
low $12.70, close $25.21
From 52-week high
-15%
high $29.75, as of Dec 10, 2025

Score components

  • Role
    Director
    +15
  • Trade size
    $8.7M at market
    +25
  • Share of holdings sold
    Sold 9.1% of holdings
    0
  • Cluster
    No other insider selling within 14 days
    0

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.

MIROct 9, 2026 · close 16.62
Since filing Dec 12, 2025: -32.6%SPY +15.4% · excess -48.1%

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 0001628280-25-056753, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Dec 10, 2025SOpen-market sale
Class A Common Stockindirect: By Lawrence D. Kingsley Revocable Trust
-350,000$24.73$8.7M3,509,075Dec 12, 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%
55Moderate
MIRsell 3
Mirion Technologies, Inc.
Lawrence D Kingsley
director
$7.1M
300,000 shares
-7%
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%
35Weak
MIRsell 210b5-1
Mirion Technologies, Inc.
Brian Schopfer
Chief Financial Officer
$1.4M
75,000 shares
-8%

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 $8.7M of MIR | InsiderTell