X0508 4 2025-12-27 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 2025-12-27 4 F 0 5913 23.76 D 78727 D Class B Common Stock 138193 D Class B Common Stock 32748 I By Trust Represents shares that have been withheld by the Issuer in satisfaction of tax withholding obligations in connection with the vesting of restricted stock units (RSUs) previously granted to the Reporting Person. Such withholding was mandated by the Issuer by a policy adopted in advance and does not represent a discretionary trade by the Reporting Person. 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 2025-12-29