MIR

These shares were issued in connection with the Reporting Person's election to receive his or her quarterly retainer for director services in the form of vested shares rather than cash.

Represents restricted stock units that will vest on the earlier to occur of (i) first anniversary of the grant date or (ii) date of the annual stockholder meeting following the grant date, subject to the non-employee director's continued service on the Board through such vesting date.

Represents restricted stock units that will vest on the earlier to occur of (i) first anniversary of the grant date or (ii) date of the annual stockholder meeting following the grant date, subject to the non-employee director's continued service on the Board through such vesting date.

Represents restricted stock units that will vest on the earlier to occur of (i) first anniversary of the grant date or (ii) date of the annual stockholder meeting following the grant date, subject to the non-employee director's continued service on the Board through such vesting date.

Represents restricted stock units that will vest on the earlier to occur of (i) first anniversary of the grant date or (ii) date of the annual stockholder meeting following the grant date, subject to the non-employee director's continued service on the Board through such vesting date.

Represents restricted stock units that will vest on the earlier to occur of (i) first anniversary of the grant date or (ii) date of the annual stockholder meeting following the grant date, subject to the non-employee director's continued service on the Board through such vesting date.

Represents restricted stock units that will vest on the earlier to occur of (i) first anniversary of the grant date or (ii) date of the annual stockholder meeting following the grant date, subject to the non-employee director's continued service on the Board through such vesting date.

Represents restricted stock units that will vest on the earlier to occur of (i) first anniversary of the grant date or (ii) date of the annual stockholder meeting following the grant date, subject to the non-employee director's continued service on the Board through such vesting date.

On May 6, 2026, the Reporting Person made a gift of 311,851 shares of Class A Common Stock to the Logan Family Trust. The Reporting Person received no consideration for this gift.

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.

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.

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.

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.

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.

These shares were issued in connection with the Reporting Person's election to receive his or her quarterly retainer for director services in the form of vested shares rather than cash.

Represents the settlement of certain performance-based restricted stock units ("PSU") previously granted on December 31, 2023, based on the achievement of specified performance goals as determined by the Issuer's compensation committee of its board of directors.

On March 2, 2026, the Reporting Person made a gift of 3,093,812 shares of Class A Common Stock to the Logan Family Trust. The Reporting Person received no consideration for the gift.

Represents shares that have been withheld by the Issuer in satisfaction of tax withholding obligations in connection with the vesting of the PSUs 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.

Represents the settlement of certain performance-based restricted stock units ("PSU") previously granted on December 31, 2023, based on the achievement of specified performance goals as determined by the Issuer's compensation committee of its board of directors.

Represents the settlement of certain performance-based restricted stock units ("PSU") previously granted on December 31, 2023, based on the achievement of specified performance goals as determined by the Issuer's compensation committee of its board of directors.

Represents shares that have been withheld by the Issuer in satisfaction of tax withholding obligations in connection with the vesting of the PSUs 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.

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.

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.

Represents restricted stock units that will vest in three equal annual installments starting on March 1, 2027, subject to the Reporting Person's continued employment through each vesting date.

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.

Represents restricted stock units that will vest in three equal annual installments starting on March 1, 2027, subject to the Reporting Person's continued employment through each vesting date.

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.

Represents restricted stock units that will vest in three equal annual installments starting on March 1, 2027, subject to the Reporting Person's continued employment through each vesting date.

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.

These shares were issued in connection with the Reporting Person's election to receive his or her quarterly retainer for director services in the form of vested shares rather than cash.

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.

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.

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.

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.

On December 11, 2025, the Reporting Person made a gift of 4,860 shares of Class A Common Stock to a donor advised fund. The Reporting Person received no consideration for the gift.

On December 8, 2025, the Reporting Person made a gift of 9,680 shares of Class A Common Stock to a donor advised fund. The Reporting Person received no consideration for the gift.

On December 5, 2025 and December 8, 2025, the Reporting Person made a gift of 2,500 shares of Class A Common Stock to a University. The Reporting Person received no consideration for the gift.

On December 5, 2025 and December 8, 2025, the Reporting Person made a gift of 2,500 shares of Class A Common Stock to a University. The Reporting Person received no consideration for the gift.

On November 24, 2025, the Reporting Person made a gift of 40,925 shares of Class A Common Stock to a donor advised fund. The Reporting Person received no consideration for the gift.

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.

The sales reported on this Form 4 were effectuated pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 7, 2025.

The Issuer issued 100,000 shares of Class A common stock of the Issuer to the reporting person pursuant to a redemption of 100,000 shares of Class B common stock of Mirion IntermediateCo, Inc. held by the reporting person effectuated pursuant to a 10b5-1 plan adopted by the reporting person on August 7, 2025. In connection with such redemption the Issuer cancelled 100,000 shares of Class B common stock of the Issuer held by the reporting person.

The Issuer issued 100,000 shares of Class A common stock of the Issuer to the reporting person pursuant to a redemption of 100,000 shares of Class B common stock of Mirion IntermediateCo, Inc. held by the reporting person effectuated pursuant to a 10b5-1 plan adopted by the reporting person on August 7, 2025. In connection with such redemption the Issuer cancelled 100,000 shares of Class B common stock of the Issuer held by the reporting person.

The sales reported on this Form 4 were effectuated pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 7, 2025.

On October 30, 2025, the Reporting Person made a gift of 106,188 shares of Class A Common Stock to a charitable organization. The Reporting Person received no consideration for the gift.

On October 30, 2025, the Reporting Person made a gift of 15,000 shares of Class A Common Stock to a donor advised fund. The Reporting Person received no consideration for the gift.