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Mirion Technologies stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions−34.7% to $17.97
Mirion Technologies (MIR) stock fell 35% over the last 252 sessions, to $17.97. On the way it reported 0 quarters, its insiders filed 2 open-market trades, and the company filed 3 material 8-Ks. Each is marked on the price and listed with what the stock did next.
Each mark, and what followed
| Date | Kind | What | Next session | 5 sessions | 21 sessions |
|---|---|---|---|---|---|
| Sep 2, 2026 | Insider buy | Schopfer Brian bought $312K | +0.4% (0.0% vs SPY) | +6.9% (+6.8% vs SPY) | −7.8% (−8.3% vs SPY) |
| Jul 2, 2026 | 8-K | Directors and officers: departures, appointments, pay | −2.7% (−3.6% vs SPY) | −2.2% (−3.6% vs SPY) | −10.3% (−12.0% vs SPY) |
| May 7, 2026 | Insider sale | Moore Christopher A. sold $165K | −3.2% (−2.9% vs SPY) | −9.0% (−10.1% vs SPY) | −17.7% (−18.2% vs SPY) |
| Apr 13, 2026 | 8-K | Directors and officers: departures, appointments, pay | +0.3% (−0.7% vs SPY) | +2.3% (−2.1% vs SPY) | −4.3% (−12.7% vs SPY) |
| Dec 8, 2025 | 8-K | Material definitive agreement | −0.4% (−0.3% vs SPY) | −3.9% (−3.5% vs SPY) | −4.2% (−5.3% vs SPY) |
Insiders’ record here
In the year on the chart, Mirion Technologies' insiders reported 1 open-market buy ($312K) and 1 sale ($165K). Of the 1 old enough to score, 1 were followed by the stock doing what the trade implied over the next 63 sessions (beating SPY after a buy, lagging it after a sale); the median excess return after a buy was — and after a sale −26.2%.
Across the whole universe (19,782 scored trades), insider buys beat the market 46% of the time and sales were followed by a lagging stock 61% of the time; buys of $1M or more 39%. Every pattern →
What this kind of 8-K usually did
| Item | 8-Ks | Next session, median | Up next session | 21 sessions, median | Typical size |
|---|---|---|---|---|---|
| 1.01 Material definitive agreement | 23,525 | 0.0% | 51% | +1.0% | ±1.4% |
| 2.03 New debt or off-balance-sheet obligation | 13,268 | 0.0% | 50% | +1.2% | ±1.3% |
| 5.02 Directors and officers: departures, appointments, pay | 39,174 | −0.1% | 48% | +0.7% | ±1.4% |
Across every company in the move-odds universe, measured from the close before the filing. Every 8-K item ranked →
Mirion Technologies: every quarter → Live insider trades →
Prices are daily closes; filings and trades are as filed with the SEC (Form 4 within two business days of the trade, 8-K within four of the event). Moves after a mark are the stock's close-to-close change and the same for SPY; they describe the record, not what the next one will do. Not investment advice.