X0508 4 2025-11-10 0 0001809987 Mirion Technologies, Inc. MIR 0002014061 Lee Emmanuelle 1218 MENLO DR. NW ATLANTA GA 30318 0 1 0 0 Chief Legal Officer 0 Class A Common Stock 2025-11-10 4 S 0 12500 27.4114 D 84640 D Class B Common Stock 138193 D Class B Common Stock 32748 I By Trust The sales reported on this Form 4 were effectuated pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 11, 2025. Reflects shares of Class B Common Stock of the Issuer ("Class B Common Stock") held of record by the Lee Revocable Living Trust (the "Lee Trust") for the benefit of the Reporting Person, the Reporting Person's spouse, and beneficiaries. The Reporting Person and the Reporting Person's spouse are both trustees and beneficiary of the Lee Trust. The Reporting Person disclaims ownership of these shares of Class B Common Stock except to the extent of her pecuniary interest therein. /s/ Emmanuelle Lee 2025-11-12