Mirion Technologies (MIR)
Supplies radiation measurement and safety systems for nuclear operations, cancer care, laboratories, and defense.
$16.42
vs last close−0.07 (−0.45%)
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13F · 13D/G · Form 4
| Institutions | 106.18% | 264.44M shares | |
|---|---|---|---|
| 375 holders · as of Jun 30, 2026 | |||
| Insiders | 0.08% | 203.6K shares | |
| 3 holders · as of May 7, 2026 | |||
| Adds to | 106.26% | ||
249.04M company shares as of Sep 23, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing
These groups come from separate filings that can overlap, so they add to 106.26%; nothing is left for Other.
This company has 2 share classes; every stake here is a share of the whole company.
13F, as of Jun 30, 2026
375 holders · 264.44M shares · 61 new positions · 201 increased · 121 reduced · 68 closed
| Holder | Shares | % of company | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 38.26M | 15.36% | +404.6K | Aug 7, 2026 |
| Vanguard Portfolio Management LLC | 18.18M | 7.30% | +274.1K | Aug 13, 2026 |
| T. Rowe Price Investment Management, Inc. | 14.29M | 5.74% | −339.7K | Aug 14, 2026 |
| Vanguard Capital Management LLC | 10.61M | 4.26% | +108.7K | Aug 13, 2026 |
| Goldman Sachs Group Inc | 10.41M | 4.18% | +3.06M | Aug 14, 2026 |
| State Street Corp | 9.92M | 3.98% | +493.6K | Aug 7, 2026 |
| Alyeska Investment Group, L.P. | 9.53M | 3.83% | +6.83M | Aug 14, 2026 |
| Cooperman Leon G | 8.38M | 3.37% | 0 | Aug 14, 2026 |
13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 14.80% | 35.69M | 13G | Oct 2, 2025 |
| Vanguard Portfolio Management | 7.40% | 18.12M | 13G | Apr 29, 2026 |
| T. Rowe Price Investment Management, Inc. | 6.10% | 15.11M | 13G | Feb 17, 2026 |
| Vanguard Capital Management | 5.03% | 12.33M | 13G | Apr 30, 2026 |
Form 4
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Sep 2, 2026 | Brian Schopferofficer: Chief Financial Officer | Purchase | 20,000 | $15.60 | 933,290 |
| May 7, 2026 | Christopher A. Mooreofficer: Chief Accounting Officer (PAO) | Sale | 8,400 | $19.64 | 22,157 |
| Dec 10, 2025 | Lawrence D. Kingsleydirector | Sale | 350,000 | $24.73 | 3,509,075 |
| Nov 21, 2025 | Lawrence D. Kingsleydirector | Sale | 300,000 | $23.83 | 3,900,000 |
| Nov 10, 2025 | Emmanuelle Leeofficer: Chief Legal Officer | Sale | 12,500 | $27.41 | 84,640 |
| Nov 11, 2025 | Loic Eloyofficer: Nuclear & Safety President | Sale | 45,000 | $27.24 | 97,770 |
| Nov 6, 2025 | Brian Schopferofficer: Chief Financial Officer | Sale · 2 lots | 100,000 | $27.65 | 904,432 |
House and Senate disclosures
Not reported.