Mirion Technologies Inc
Ownership
Ownership Structure
Who owns Mirion Technologies Inc (MIR)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 93.3% of the shares are freely tradable; institutional investors hold 110.4%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 15.36 | 38,262,307 | +1.1 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 7.30 | 18,179,850 | +1.5 | 06/30/2026 |
| T. Rowe Price Investment Management,Inc. | 5.74 | 14,288,075 | -2.3 | 06/30/2026 |
| Vanguard Capital Management, LLC | 4.26 | 10,613,869 | +1.0 | 06/30/2026 |
| The Goldman Sachs Group Inc | 4.18 | 10,406,605 | +41.6 | 06/30/2026 |
| State Street Corp | 3.98 | 9,923,609 | +5.2 | 06/30/2026 |
| Alyeska Investment Group, L.P. | 3.83 | 9,534,955 | +252.9 | 06/30/2026 |
| Cooperman Leon G | 3.37 | 8,383,441 | +0.0 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 5.82 | 14,487,553 | +0.0 | 09/30/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 2.98 | 7,413,520 | +0.3 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Schopfer Brian | Chief Financial Officer | 933,290 | 16,799,220 $ | Sep 2, 2026 | direct |
| Markopoulos Jody | Director | 82,842 | 1,491,156 $ | Sep 30, 2026 | direct |
| Kingsley Lawrence D | Director | 73,858 | 1,329,444 $ | Sep 30, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 30, 2026 | Kingsley Lawrence D | Director | Other | 1,333 | 14.34 | 19,115 |
| Sep 30, 2026 | Markopoulos Jody | Director | Other | 1,333 | 14.34 | 19,115 |
| Sep 2, 2026 | Schopfer Brian | Chief Financial Officer | Buy | 20,000 | 15.60 | 312,000 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: November 4, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.