Through the 90-day period concluding February 19, 2026, Mirion Technologies's top three insider stakeholders include TenPercentOwner Sponsor Ii Llc Gs (17.79Mn shares), Director Holdings Llc Gsam (16.02Mn shares), Other General Partners (Ix) Ltd Charterhouse (14.96Mn shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Sponsor Ii Llc Gs | 17,793,000 | 06 Jun, 2024 | |
| Holdings Llc Gsam | 16,025,000 | 12 Dec, 2022 | |
| General Partners (Ix) Ltd Charterhouse | 14,960,702 | 08 Mar, 2023 | |
| Lawrence D Kingsley | 3,572,018 | 05 Jan, 2026 | |
| Thomas D Logan | Chief Executive Officer | 3,309,688 | 29 Dec, 2025 |
| Michael Freed | Chief Operating Officer | 935,818 | 22 Oct, 2021 |
| Brian Schopfer | Chief Financial Officer | 893,432 | 29 Dec, 2025 |
| Michael J Rossi | Medical Group President | 116,173 | 03 Nov, 2023 |
| Loic Eloy | Nuclear & Safety President | 97,770 | 12 Nov, 2025 |
| Steven W. Etzel | 80,065 | 16 May, 2025 | |
| Emmanuelle Lee | Chief Legal Officer | 78,727 | 29 Dec, 2025 |
| Jody Markopoulos | 74,126 | 01 Jul, 2025 | |
| John W Kuo | 72,736 | 12 Dec, 2025 | |
| Kenneth Bockhorst | 69,875 | 12 Dec, 2025 | |
| Robert Cascella | 53,418 | 16 May, 2025 | |
| Sheila Rege | 42,494 | 16 May, 2025 | |
| Alison Ulrich | Chief Human Resources Officer | 35,096 | 29 Dec, 2025 |
| Christopher A. Moore | Chief Accounting Officer (Pao) | 28,305 | 03 Apr, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 31 Dec, 2025 | Lawrence D Kingsley | Class A Common Stock | A | 806 | $23.70 | 62,943 | D | A |
| 27 Dec, 2025 | Thomas D Logan | Class A Common Stock | D | 39,863 | $23.76 | 3,309,688 | D | F |
| 27 Dec, 2025 | Brian Schopfer | Class A Common Stock | D | 8,500 | $23.76 | 893,432 | D | F |
| 27 Dec, 2025 | Alison Ulrich | Class A Common Stock | D | 134 | $23.76 | 35,096 | D | F |
| 27 Dec, 2025 | Emmanuelle Lee | Class A Common Stock | D | 5,913 | $23.76 | 78,727 | D | F |
| 11 Dec, 2025 | John W Kuo | Class A Common Stock | D | 4,860 | $0.00 | 72,736 | D | G |
| 10 Dec, 2025 | Lawrence D Kingsley | Class A Common Stock | D | 350,000 | $24.73 | 3,509,075 | I | S |
| 08 Dec, 2025 | Kenneth Bockhorst | Class A Common Stock | D | 9,680 | $0.00 | 69,875 | D | G |
| 08 Dec, 2025 | Brian Schopfer | Class A Common Stock | D | 100 | $0.00 | 901,932 | D | G |
| 05 Dec, 2025 | Brian Schopfer | Class A Common Stock | D | 2,400 | $0.00 | 902,032 | D | G |
| 24 Nov, 2025 | Lawrence D Kingsley | Class A Common Stock | D | 40,925 | $0.00 | 3,859,075 | I | G |
| 21 Nov, 2025 | Lawrence D Kingsley | Class A Common Stock | D | 300,000 | $23.83 | 3,900,000 | I | S |
| 11 Nov, 2025 | Loic Eloy | Class A Common Stock | D | 45,000 | $27.24 | 97,770 | D | S |
| 10 Nov, 2025 | Emmanuelle Lee | Class A Common Stock | D | 12,500 | $27.41 | 84,640 | D | S |
| 06 Nov, 2025 | Brian Schopfer | Class B Common Stock | D | 100,000 | - | 399,935 | D | D |
| 06 Nov, 2025 | Brian Schopfer | Class A Common Stock | A | 100,000 | - | 1,004,432 | D | A |
| 06 Nov, 2025 | Brian Schopfer | Class A Common Stock | D | 50,000 | $27.66 | 904,432 | D | S |
| 06 Nov, 2025 | Brian Schopfer | Class A Common Stock | D | 50,000 | $27.65 | 954,432 | D | S |
| 30 Oct, 2025 | Thomas D Logan | Class A Common Stock | D | 106,188 | $0.00 | 3,349,551 | D | G |
| 30 Oct, 2025 | Brian Schopfer | Class A Common Stock | D | 15,000 | $0.00 | 904,432 | D | G |