Brian Schopfer, Chief Financial Officer at Mirion Technologies, bought MIR on Sep 2, 2026

Data as of Oct 16

▲ BUY$312K20,000 shares at $15.60Brian Schopfer Chief Financial OfficerMIR Mirion Technologies, Inc.

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Traded: Sep 2, 2026
Disclosed: Sep 2, 2026
Filed: The same day

Form 4s are due within two business days.

Official filing (SEC Form 4) ↗

The price around the disclosure

MIRSimilar stocks (XLI — its sector index fund), rebased to MIR's price on the disclosure day

MIR since disclosure

−2.7%

Similar stocks (XLI) since disclosure

−2.9%

XLI — its sector index fund

Change in closing price from Sep 2, 2026 (the first trading day on or after disclosure) to Oct 16, 2026. Dividends excluded. Not a return anyone earned.

Our take

⚪ CFO buys $25K+ of own stock — fired on this trade
Not enough evidence · In past tests: 3.6 percentage points better than similar stocks over 3 months · 2,178 tries
⚪ CFO buys $25K+ of own liquid stock — fired on this trade
Not enough evidence · In past tests: 2.0 percentage points better than similar stocks over 3 months · 1,426 tries

What this rule is doing with MIR right now

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