Logan Thomas D

SEC source: 0001628280-26-032198 · wk-form4_1778185340.xml · nonDerivative · entry 1

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 52,209

F1 · shares: 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.

SEC source: 0001628280-26-023169 · wk-form4_1775160924.xml · nonDerivative · entry 1

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 364,060

F1 · shares: 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.

SEC source: 0001628280-26-013814 · wk-form4_1772572313.xml · nonDerivative · entry 4

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 386,674

F4 · shares: 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.

SEC source: 0001628280-26-013814 · wk-form4_1772572313.xml · nonDerivative · entry 3

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,480,486

F3 · shares: 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.

SEC source: 0001628280-26-013814 · wk-form4_1772572313.xml · nonDerivative · entry 2

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,607,670

F2 · shares: 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.

SEC source: 0001628280-26-013814 · wk-form4_1772572313.xml · nonDerivative · entry 1

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,289,038

F1 · shares: 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.

SEC source: 0001628280-25-058982 · wk-form4_1767042522.xml · nonDerivative · entry 1

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,309,688

F1 · shares: 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.

SEC source: 0001628280-25-048233 · wk-form4_1762204247.xml · nonDerivative · entry 1

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,349,551

F1 · shares: 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.

SEC source: 0001486259-25-000004 · wk-form4_1755115580.xml · nonDerivative · entry 2

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,567,305

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $21.31 to $22.205, inclusive.

SEC source: 0001486259-25-000004 · wk-form4_1755115580.xml · nonDerivative · entry 1

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,742,305

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $21.01 to $21.47, inclusive.

SEC source: 0001628280-25-026283 · wk-form4_1747426689.xml · nonDerivative · entry 2

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,067,305

F2 · shares: 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.

SEC source: 0001628280-25-026283 · wk-form4_1747426689.xml · nonDerivative · entry 1

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,156,735

F1 · shares: Represents the settlement of certain performance-based restricted stock units ("PSU") previously granted on April 1, 2022, based on the achievement of specified performance goals as determined by the Issuer's compensation committee of its board of directors.

SEC source: 0001628280-25-016505 · wk-form4_1743711856.xml · nonDerivative · entry 1

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,943,501

F1 · shares: 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.

SEC source: 0001628280-25-009927 · wk-form4_1741124505.xml · nonDerivative · entry 1

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,997,644

F1 · shares: 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.

SEC source: 0001628280-25-008654 · wk-form4_1740690725.xml · nonDerivative · entry 2

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,018,187

F2 · shares: 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.

SEC source: 0001628280-25-008654 · wk-form4_1740690725.xml · nonDerivative · entry 1

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,094,305

F1 · shares: Represents the settlement of certain performance-based restricted stock units ("PSU") previously granted on December 27, 2021, based on the achievement of specified performance goals as determined by the Issuer's compensation committee of its board of directors.

SEC source: 0001628280-24-052641 · wk-form4_1735679647.xml · nonDerivative · entry 1

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,915,203

F1 · shares: 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.

SEC source: 0001628280-24-052109 · wk-form4_1734646828.xml · derivative · entry 3

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 2,400,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Sponsor Units represent membership interests in GS Sponsor II, LLC, a Delaware limited liability company ("Sponsor"). The Sponsor Units held by the Reporting Person are subject to both service- and performance-vesting conditions. 2,400,000 Sponsor Units satisfied the performance vesting conditions on December 17, 2024, when the volume weighted average price per share of Class A Common Stock of the Issuer met or exceeded $16.00 for at least 20 trading days in a 30 consecutive trading day period; the service vesting condition was previously satisfied. The Sponsor, of which the Reporting Person is a non-managing member, completed a pro rata distribution of Class A Common Stock to holders of Sponsor Units, including the Reporting Person, on December 18, 2024.

F1 · price: Sponsor Units represent membership interests in GS Sponsor II, LLC, a Delaware limited liability company ("Sponsor"). The Sponsor Units held by the Reporting Person are subject to both service- and performance-vesting conditions. 2,400,000 Sponsor Units satisfied the performance vesting conditions on December 17, 2024, when the volume weighted average price per share of Class A Common Stock of the Issuer met or exceeded $16.00 for at least 20 trading days in a 30 consecutive trading day period; the service vesting condition was previously satisfied. The Sponsor, of which the Reporting Person is a non-managing member, completed a pro rata distribution of Class A Common Stock to holders of Sponsor Units, including the Reporting Person, on December 18, 2024.

F1 · derivative.exercise_date: Sponsor Units represent membership interests in GS Sponsor II, LLC, a Delaware limited liability company ("Sponsor"). The Sponsor Units held by the Reporting Person are subject to both service- and performance-vesting conditions. 2,400,000 Sponsor Units satisfied the performance vesting conditions on December 17, 2024, when the volume weighted average price per share of Class A Common Stock of the Issuer met or exceeded $16.00 for at least 20 trading days in a 30 consecutive trading day period; the service vesting condition was previously satisfied. The Sponsor, of which the Reporting Person is a non-managing member, completed a pro rata distribution of Class A Common Stock to holders of Sponsor Units, including the Reporting Person, on December 18, 2024.

F1 · derivative.expiration_date: Sponsor Units represent membership interests in GS Sponsor II, LLC, a Delaware limited liability company ("Sponsor"). The Sponsor Units held by the Reporting Person are subject to both service- and performance-vesting conditions. 2,400,000 Sponsor Units satisfied the performance vesting conditions on December 17, 2024, when the volume weighted average price per share of Class A Common Stock of the Issuer met or exceeded $16.00 for at least 20 trading days in a 30 consecutive trading day period; the service vesting condition was previously satisfied. The Sponsor, of which the Reporting Person is a non-managing member, completed a pro rata distribution of Class A Common Stock to holders of Sponsor Units, including the Reporting Person, on December 18, 2024.

SEC source: 0001628280-24-052109 · wk-form4_1734646828.xml · nonDerivative · entry 1

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,955,790

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Sponsor Units represent membership interests in GS Sponsor II, LLC, a Delaware limited liability company ("Sponsor"). The Sponsor Units held by the Reporting Person are subject to both service- and performance-vesting conditions. 2,400,000 Sponsor Units satisfied the performance vesting conditions on December 17, 2024, when the volume weighted average price per share of Class A Common Stock of the Issuer met or exceeded $16.00 for at least 20 trading days in a 30 consecutive trading day period; the service vesting condition was previously satisfied. The Sponsor, of which the Reporting Person is a non-managing member, completed a pro rata distribution of Class A Common Stock to holders of Sponsor Units, including the Reporting Person, on December 18, 2024.

SEC source: 0001628280-24-047957 · wk-form4_1731621845.xml · derivative · entry 4

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,400,000

Underlying: Class A Common Stock · 800,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Sponsor Units represent membership interests in GS Sponsor II, LLC, a Delaware limited liability company ("Sponsor"). The Sponsor Units held by the Reporting Person are subject to both service- and performance-vesting conditions. 800,000 Sponsor Units satisfied the performance vesting conditions on November 12, 2024 when the volume weighted average price per share of Class A Common Stock of the Issuer met or exceeded $14.00 for at least 20 trading days in a 30 consecutive trading day period; the service vesting condition was previously satisfied. The Sponsor, of which the Reporting Person is a non-managing member, completed a pro rata distribution of Class A Common Stock to holders of Sponsor Units, including the Reporting Person, on November 13, 2024.

F3 · price: The remaining Sponsor Units held by the Reporting Person are subject to both service- and performance-vesting conditions. The remaining Sponsor Units service-vested on October 20, 2024. The remaining Sponsor Units will performance-vest when the volume weighted average price per share of Class A Common Stock of the Issuer meets or exceeds $16.00 for at least 20 trading days in a 30 consecutive trading day period, provided that such date occurs on or before October 20, 2026. The Reporting Person is not entitled to distributions in respect of Sponsor Units until all applicable vesting conditions are satisfied.

F3 · derivative.exercise_date: The remaining Sponsor Units held by the Reporting Person are subject to both service- and performance-vesting conditions. The remaining Sponsor Units service-vested on October 20, 2024. The remaining Sponsor Units will performance-vest when the volume weighted average price per share of Class A Common Stock of the Issuer meets or exceeds $16.00 for at least 20 trading days in a 30 consecutive trading day period, provided that such date occurs on or before October 20, 2026. The Reporting Person is not entitled to distributions in respect of Sponsor Units until all applicable vesting conditions are satisfied.

F3 · derivative.expiration_date: The remaining Sponsor Units held by the Reporting Person are subject to both service- and performance-vesting conditions. The remaining Sponsor Units service-vested on October 20, 2024. The remaining Sponsor Units will performance-vest when the volume weighted average price per share of Class A Common Stock of the Issuer meets or exceeds $16.00 for at least 20 trading days in a 30 consecutive trading day period, provided that such date occurs on or before October 20, 2026. The Reporting Person is not entitled to distributions in respect of Sponsor Units until all applicable vesting conditions are satisfied.

SEC source: 0001628280-24-047957 · wk-form4_1731621845.xml · nonDerivative · entry 1

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,555,790

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Sponsor Units represent membership interests in GS Sponsor II, LLC, a Delaware limited liability company ("Sponsor"). The Sponsor Units held by the Reporting Person are subject to both service- and performance-vesting conditions. 800,000 Sponsor Units satisfied the performance vesting conditions on November 12, 2024 when the volume weighted average price per share of Class A Common Stock of the Issuer met or exceeded $14.00 for at least 20 trading days in a 30 consecutive trading day period; the service vesting condition was previously satisfied. The Sponsor, of which the Reporting Person is a non-managing member, completed a pro rata distribution of Class A Common Stock to holders of Sponsor Units, including the Reporting Person, on November 13, 2024.

SEC source: 0001628280-24-043968 · wk-form4_1730150845.xml · nonDerivative · entry 3

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Aere Perennius, LLC

Disclosed balance after: 0

F3 · shares: The sales reported on this Form 4 were effectuated pursuant to a Rule 10b5-1 trading plan adopted by Aere Perennius, LLC, a limited liability company which holds interests in trusts established for the benefit of the reporting person's adult children on February 27, 2024. Mary Logan Martineau as Investment Trustee has sole voting and dispositive power of the shares of Class B common stock held by Aere Perennius, LLC, and any Class A common stock that may be received in exchange for Class B common stock following a request for redemption. The Reporting Person disclaims ownership of all such shares except to the extent of his pecuniary interest therein.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.87 to $14.22, inclusive.

SEC source: 0001628280-24-043968 · wk-form4_1730150845.xml · nonDerivative · entry 2

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Aere Perennius, LLC

Disclosed balance after: 7,500

F1 · price: The Issuer issued 7,500 shares of Class A common stock of the Issuer to Aere Perennius, LLC, pursuant to a redemption on a one-for-one basis of 7,500 shares of Class B common stock of Mirion IntermediateCo, Inc. held by Aere Perennius, LLC, effectuated pursuant to a 10b5-1 plan adopted by Aere Perennius, LLC on February 27, 2024. In connection with such redemption the Issuer canceled 7,500 shares of Class B common stock of the Issuer held by Aere Perennius, LLC.

SEC source: 0001628280-24-043968 · wk-form4_1730150845.xml · nonDerivative · entry 1

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Aere Perennius, LLC

Disclosed balance after: 2,551,371

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: The Issuer issued 7,500 shares of Class A common stock of the Issuer to Aere Perennius, LLC, pursuant to a redemption on a one-for-one basis of 7,500 shares of Class B common stock of Mirion IntermediateCo, Inc. held by Aere Perennius, LLC, effectuated pursuant to a 10b5-1 plan adopted by Aere Perennius, LLC on February 27, 2024. In connection with such redemption the Issuer canceled 7,500 shares of Class B common stock of the Issuer held by Aere Perennius, LLC.

F2 · ownership.nature: Reflects shares of Class B common stock of the Issuer which are held of record by Aere Perennius, LLC., a limited liability company which is held by trusts established for the benefit of Mr. Logan's adult children. Mary Logan Martineau, formerly known as Mary Hancock Logan, as Manager has sole voting and dispositive power of the shares of Class B common stock held by Aere Perennius, LLC. Shares of Class B common stock may be exchanged for shares of Class A common stock of the Issuer on a one-for-one basis following a request for redemption by the holder. The Reporting Person disclaims ownership of these shares except to the extent of his pecuniary interest therein.

SEC source: 0001628280-24-041379 · wk-form4_1727384660.xml · nonDerivative · entry 3

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Aere Perennius, LLC

Disclosed balance after: 0

F3 · shares: The sales reported on this Form 4 were effectuated pursuant to a Rule 10b5-1 trading plan adopted by Aere Perennius, LLC, a limited liability company which holds interests in trusts established for the benefit of the reporting person's adult children on February 27, 2024. Mary Logan Martineau as Investment Trustee has sole voting and dispositive power of the shares of Class B common stock held by Aere Perennius, LLC, and any Class A common stock that may be received in exchange for Class B common stock following a request for redemption. The Reporting Person disclaims ownership of all such shares except to the extent of his pecuniary interest therein.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.32 to $10.75, inclusive.

SEC source: 0001628280-24-041379 · wk-form4_1727384660.xml · nonDerivative · entry 2

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Aere Perennius, LLC

Disclosed balance after: 7,500

F1 · price: The Issuer issued 7,500 shares of Class A common stock of the Issuer to Aere Perennius, LLC, pursuant to a redemption on a one-for-one basis of 7,500 shares of Class B common stock of Mirion IntermediateCo, Inc. held by Aere Perennius, LLC, effectuated pursuant to a 10b5-1 plan adopted by Aere Perennius, LLC on February 27, 2024. In connection with such redemption the Issuer canceled 7,500 shares of Class B common stock of the Issuer held by Aere Perennius, LLC.

SEC source: 0001628280-24-041379 · wk-form4_1727384660.xml · nonDerivative · entry 1

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Aere Perennius, LLC

Disclosed balance after: 2,558,871

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: The Issuer issued 7,500 shares of Class A common stock of the Issuer to Aere Perennius, LLC, pursuant to a redemption on a one-for-one basis of 7,500 shares of Class B common stock of Mirion IntermediateCo, Inc. held by Aere Perennius, LLC, effectuated pursuant to a 10b5-1 plan adopted by Aere Perennius, LLC on February 27, 2024. In connection with such redemption the Issuer canceled 7,500 shares of Class B common stock of the Issuer held by Aere Perennius, LLC.

F2 · ownership.nature: Reflects shares of Class B common stock of the Issuer which are held of record by Aere Perennius, LLC., a limited liability company which holds interests in trusts established for the benefit of Mr. Logan's adult children. Mary Logan Martineau, formerly known as Mary Hancock Logan, as Investment Trustee has sole voting and dispositive power of the shares of Class B common stock held by Aere Perennius, LLC. Shares of Class B common stock may be exchanged for shares of Class A common stock of the Issuer on a one-for-one basis following a request for redemption by the holder. The Reporting Person disclaims ownership of these shares except to the extent of his pecuniary interest therein.

SEC source: 0001628280-24-038546 · wk-form4_1724791202.xml · nonDerivative · entry 3

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Aere Perennius, LLC

Disclosed balance after: 0

F3 · shares: The sales reported on this Form 4 were effectuated pursuant to a Rule 10b5-1 trading plan adopted by Aere Perennius, LLC, a limited liability company which holds interests in trusts established for the benefit of the reporting person's adult children on February 27, 2024. Mary Logan Martineau as Investment Trustee has sole voting and dispositive power of the shares of Class B common stock held by Aere Perennius, LLC, and any Class A common stock that may be received in exchange for Class B common stock following a request for redemption. The Reporting Person disclaims ownership of all such shares except to the extent of his pecuniary interest therein.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.84 to $11.10, inclusive.

SEC source: 0001628280-24-038546 · wk-form4_1724791202.xml · nonDerivative · entry 2

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Aere Perennius, LLC

Disclosed balance after: 7,500

F1 · price: The Issuer issued 7,500 shares of Class A common stock of the Issuer to Aere Perennius, LLC, pursuant to a redemption on a one-for-one basis of 7,500 shares of Class B common stock of Mirion IntermediateCo, Inc. held by Aere Perennius, LLC, effectuated pursuant to a 10b5-1 plan adopted by Aere Perennius, LLC on February 27, 2024. In connection with such redemption the Issuer canceled 7,500 shares of Class B common stock of the Issuer held by Aere Perennius, LLC.

SEC source: 0001628280-24-038546 · wk-form4_1724791202.xml · nonDerivative · entry 1

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Aere Perennius, LLC

Disclosed balance after: 2,566,371

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: The Issuer issued 7,500 shares of Class A common stock of the Issuer to Aere Perennius, LLC, pursuant to a redemption on a one-for-one basis of 7,500 shares of Class B common stock of Mirion IntermediateCo, Inc. held by Aere Perennius, LLC, effectuated pursuant to a 10b5-1 plan adopted by Aere Perennius, LLC on February 27, 2024. In connection with such redemption the Issuer canceled 7,500 shares of Class B common stock of the Issuer held by Aere Perennius, LLC.

F2 · ownership.nature: Reflects shares of Class B common stock of the Issuer which are held of record by Aere Perennius, LLC., a limited liability company which holds interests in trusts established for the benefit of Mr. Logan's adult children. Mary Logan Martineau, formerly known as Mary Hancock Logan, as Investment Trustee has sole voting and dispositive power of the shares of Class B common stock held by Aere Perennius, LLC. Shares of Class B common stock may be exchanged for shares of Class A common stock of the Issuer on a one-for-one basis following a request for redemption by the holder. The Reporting Person disclaims ownership of these shares except to the extent of his pecuniary interest therein.

SEC source: 0001628280-24-033070 · wk-form4_1721997264.xml · nonDerivative · entry 3

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Aere Perennius, LLC

Disclosed balance after: 0

F3 · shares: The sales reported on this Form 4 were effectuated pursuant to a Rule 10b5-1 trading plan adopted by Aere Perennius, LLC, a limited liability company which holds interests in trusts established for the benefit of the reporting person's adult children on February 27, 2024. Mary Logan Martineau as Investment Trustee has sole voting and dispositive power of the shares of Class B common stock held by Aere Perennius, LLC, and any Class A common stock that may be received in exchange for Class B common stock following a request for redemption. The Reporting Person disclaims ownership of all such shares except to the extent of his pecuniary interest therein.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.69 to $11.03, inclusive.

SEC source: 0001628280-24-033070 · wk-form4_1721997264.xml · nonDerivative · entry 2

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Aere Perennius, LLC

Disclosed balance after: 7,500

F1 · price: The Issuer issued 7,500 shares of Class A common stock of the Issuer to Aere Perennius, LLC, pursuant to a redemption on a one-for-one basis of 7,500 shares of Class B common stock of Mirion IntermediateCo, Inc. held by Aere Perennius, LLC, effectuated pursuant to a 10b5-1 plan adopted by Aere Perennius, LLC on February 27, 2024. In connection with such redemption the Issuer canceled 7,500 shares of Class B common stock of the Issuer held by Aere Perennius, LLC.

SEC source: 0001628280-24-033070 · wk-form4_1721997264.xml · nonDerivative · entry 1

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Aere Perennius, LLC

Disclosed balance after: 2,573,871

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: The Issuer issued 7,500 shares of Class A common stock of the Issuer to Aere Perennius, LLC, pursuant to a redemption on a one-for-one basis of 7,500 shares of Class B common stock of Mirion IntermediateCo, Inc. held by Aere Perennius, LLC, effectuated pursuant to a 10b5-1 plan adopted by Aere Perennius, LLC on February 27, 2024. In connection with such redemption the Issuer canceled 7,500 shares of Class B common stock of the Issuer held by Aere Perennius, LLC.

F2 · ownership.nature: Reflects shares of Class B common stock of the Issuer which are held of record by Aere Perennius, LLC., a limited liability company which holds interests in trusts established for the benefit of Mr. Logan's adult children. Mary Logan Martineau, formerly known as Mary Hancock Logan, as Investment Trustee has sole voting and dispositive power of the shares of Class B common stock held by Aere Perennius, LLC. Shares of Class B common stock may be exchanged for shares of Class A common stock of the Issuer on a one-for-one basis following a request for redemption by the holder. The Reporting Person disclaims ownership of these shares except to the extent of his pecuniary interest therein.

SEC source: 0001628280-24-029901 · wk-form4_1719346728.xml · nonDerivative · entry 3

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Aere Perennius, LLC

Disclosed balance after: 0

F3 · shares: The sales reported on this Form 4 were effectuated pursuant to a Rule 10b5-1 trading plan adopted by Aere Perennius, LLC, a limited liability company which holds interests in trusts established for the benefit of the reporting person's adult children on February 27, 2024. Mary Logan Martineau as Investment Trustee has sole voting and dispositive power of the shares of Class B common stock held by Aere Perennius, LLC, and any Class A common stock that may be received in exchange for Class B common stock following a request for redemption. The Reporting Person disclaims ownership of all such shares except to the extent of his pecuniary interest therein.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.80 to $10.93, inclusive.

SEC source: 0001628280-24-029901 · wk-form4_1719346728.xml · nonDerivative · entry 2

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Aere Perennius, LLC

Disclosed balance after: 7,500

F1 · price: The Issuer issued 7,500 shares of Class A common stock of the Issuer to Aere Perennius, LLC, pursuant to a redemption on a one-for-one basis of 7,500 shares of Class B common stock of Mirion IntermediateCo, Inc. held by Aere Perennius, LLC, effectuated pursuant to a 10b5-1 plan adopted by Aere Perennius, LLC on February 27, 2024. In connection with such redemption the Issuer canceled 7,500 shares of Class B common stock of the Issuer held by Aere Perennius, LLC.

SEC source: 0001628280-24-029901 · wk-form4_1719346728.xml · nonDerivative · entry 1

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Aere Perennius, LLC

Disclosed balance after: 2,581,371

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: The Issuer issued 7,500 shares of Class A common stock of the Issuer to Aere Perennius, LLC, pursuant to a redemption on a one-for-one basis of 7,500 shares of Class B common stock of Mirion IntermediateCo, Inc. held by Aere Perennius, LLC, effectuated pursuant to a 10b5-1 plan adopted by Aere Perennius, LLC on February 27, 2024. In connection with such redemption the Issuer canceled 7,500 shares of Class B common stock of the Issuer held by Aere Perennius, LLC.

F2 · ownership.nature: Reflects shares of Class B common stock of the Issuer which are held of record by Aere Perennius, LLC., a limited liability company which holds interests in trusts established for the benefit of Mr. Logan's adult children. Mary Logan Martineau, formerly known as Mary Hancock Logan, as Investment Trustee has sole voting and dispositive power of the shares of Class B common stock held by Aere Perennius, LLC. Shares of Class B common stock may be exchanged for shares of Class A common stock of the Issuer on a one-for-one basis following a request for redemption by the holder. The Reporting Person disclaims ownership of these shares except to the extent of his pecuniary interest therein.

SEC source: 0001628280-24-025809 · wk-form4_1717100438.xml · nonDerivative · entry 3

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Aere Perennius, LLC

Disclosed balance after: 0

F3 · shares: The sales reported on this Form 4 were effectuated pursuant to a Rule 10b5-1 trading plan adopted by Aere Perennius, LLC, a limited liability company which holds interests in trusts established for the benefit of the reporting person's adult children on February 27, 2024. Mary Logan Martineau as Investment Trustee has sole voting and dispositive power of the shares of Class B common stock held by Aere Perennius, LLC, and any Class A common stock that may be received in exchange for Class B common stock following a request for redemption. The Reporting Person disclaims ownership of all such shares except to the extent of his pecuniary interest therein.

SEC source: 0001628280-24-025809 · wk-form4_1717100438.xml · nonDerivative · entry 2

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Aere Perennius, LLC

Disclosed balance after: 7,500

F1 · price: The Issuer issued 7,500 shares of Class A common stock of the Issuer to Aere Perennius, LLC, pursuant to a redemption on a one-for-one basis of 7,500 shares of Class B common stock of Mirion IntermediateCo, Inc. held by Aere Perennius, LLC, effectuated pursuant to a 10b5-1 plan adopted by Aere Perennius, LLC on February 27, 2024. In connection with such redemption the Issuer canceled 7,500 shares of Class B common stock of the Issuer held by Aere Perennius, LLC.

SEC source: 0001628280-24-025809 · wk-form4_1717100438.xml · nonDerivative · entry 1

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Aere Perennius, LLC

Disclosed balance after: 2,588,871

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: The Issuer issued 7,500 shares of Class A common stock of the Issuer to Aere Perennius, LLC, pursuant to a redemption on a one-for-one basis of 7,500 shares of Class B common stock of Mirion IntermediateCo, Inc. held by Aere Perennius, LLC, effectuated pursuant to a 10b5-1 plan adopted by Aere Perennius, LLC on February 27, 2024. In connection with such redemption the Issuer canceled 7,500 shares of Class B common stock of the Issuer held by Aere Perennius, LLC.

F2 · ownership.nature: Reflects shares of Class B common stock of the Issuer which are held of record by Aere Perennius, LLC., a limited liability company which holds interests in trusts established for the benefit of Mr. Logan's adult children. Mary Logan Martineau, formerly known as Mary Hancock Logan, as Investment Trustee has sole voting and dispositive power of the shares of Class B common stock held by Aere Perennius, LLC. Shares of Class B common stock may be exchanged for shares of Class A common stock of the Issuer on a one-for-one basis following a request for redemption by the holder. The Reporting Person disclaims ownership of these shares except to the extent of his pecuniary interest therein.

SEC source: 0001628280-24-014603 · wk-form4_1712176393.xml · nonDerivative · entry 1

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 755,790

F1 · shares: 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.

SEC source: 0001628280-24-009042 · wk-form4_1709677472.xml · nonDerivative · entry 1

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 811,888

F1 · shares: Represents restricted stock units that will vest in three equal annual installments starting on March 1, 2025, subject to the Reporting Person's continued employment through each vesting date.

SEC source: 0001628280-23-042834 · wk-form4_1703804708.xml · nonDerivative · entry 1

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 655,262

F1 · shares: 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.

SEC source: 0001628280-23-010713 · wf-form4_168064373266431.xml · nonDerivative · entry 1

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 702,571

F1 · shares: 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.

SEC source: 0001628280-23-010173 · wf-form4_168029442377015.xml · nonDerivative · entry 1

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 739,433

F1 · shares: Represents restricted stock units that will vest in three equal annual installments starting on April 1, 2024, subject to the Reporting Person's continued employment through each vesting date.

F2 · balance_after: Holdings have been revised to correct a transposition error in a Form 4 filed by the Reporting Person on April 5, 2022 (223,408 shares of Class A common stock acquired should have been 223,048) and subsequently in the holdings reported on a Form 4 filed by the Reporting Person on December 28, 2022 (572,092 shares of Class A common stock should have been 571,732)."

SEC source: 0001628280-22-032644 · wf-form4_167226502393517.xml · nonDerivative · entry 1

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 572,092

F1 · shares: 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.

SEC source: 0000950103-22-006052 · dp170696_4-logan.xml · nonDerivative · entry 1

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,149,104

F1 · shares: Represents restricted stock units that will vest in four equal annual installments subject to the Reporting Person's continued employment through each vesting date.

SEC source: 0000950103-21-020498 · dp164368_4-logan.xml · nonDerivative · entry 1

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,925,696

F1 · shares: Represents restricted stock units that will vest in four equal annual installments subject to the Reporting Person's continued employment through each vesting date.

SEC source: 0000950103-21-016338 · dp160254_4-logan.xml · nonDerivative · entry 4

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 865,461

F1 · kind: Pursuant to the Business Combination Agreement, dated June 17, 2021 (as amended on September 3, 2021), by and among GS Acquisition Holdings Corp II ("GSAH"), Mirion Technologies (TopCo), Ltd ("Legacy Mirion") and the other parties thereto (the "Business Combination Agreement"), GSAH established a Delaware corporation, Mirion IntermediateCo, Inc. ("IntermediateCo") as a subsidiary thereof. A newly-formed subsidiary of IntermediateCo merged with and into Legacy Mirion with Legacy Mirion surviving as a wholly-owned subsidiary of IntermediateCo, with GSAH (which changed its name to Mirion Technologies, Inc. (the "Issuer")) thereby becoming the corporate parent of Legacy Mirion. The transactions contemplated by the Business Combination Agreement are referred to herein as the "Business Combination".

F2 · kind: Pursuant to the terms of the Business Combination Agreement, the shareholders of Legacy Mirion at the effective time of the Business Combination (the "Effective Time") were entitled to elect to receive, for each Class A ordinary share of Legacy Mirion held by them immediately prior to the Effective Time, a combination of cash and shares of Class B common stock of the Issuer ("Common Stock"), in each case, as specified by the applicable Legacy Mirion shareholder.

F6 · kind: Reflects shares of Common Stock acquired pursuant to the Business Combination Agreement, which are held of record by the J.P. Morgan Trust Company of Delaware in its capacity as Trustee of the Thomas Darrell Logan, Jr. GST Exempt Trust (the "T. Logan Trust"). Member(s) of the Reporting Person's immediate family are holders of the T. Logan Trust, and the Reporting Person may be deemed to exercise voting and investment power over such shares of Common Stock; however, the J.P. Morgan Trust Company of Delaware in its capacity as Trustee of T. Logan Trust has sole voting and dispositive power over the shares of Common Stock held thereby. The Reporting Person disclaims ownership of these shares of Common Stock except to the extent of his pecuniary interest therein.

F1 · price: Pursuant to the Business Combination Agreement, dated June 17, 2021 (as amended on September 3, 2021), by and among GS Acquisition Holdings Corp II ("GSAH"), Mirion Technologies (TopCo), Ltd ("Legacy Mirion") and the other parties thereto (the "Business Combination Agreement"), GSAH established a Delaware corporation, Mirion IntermediateCo, Inc. ("IntermediateCo") as a subsidiary thereof. A newly-formed subsidiary of IntermediateCo merged with and into Legacy Mirion with Legacy Mirion surviving as a wholly-owned subsidiary of IntermediateCo, with GSAH (which changed its name to Mirion Technologies, Inc. (the "Issuer")) thereby becoming the corporate parent of Legacy Mirion. The transactions contemplated by the Business Combination Agreement are referred to herein as the "Business Combination".

F2 · price: Pursuant to the terms of the Business Combination Agreement, the shareholders of Legacy Mirion at the effective time of the Business Combination (the "Effective Time") were entitled to elect to receive, for each Class A ordinary share of Legacy Mirion held by them immediately prior to the Effective Time, a combination of cash and shares of Class B common stock of the Issuer ("Common Stock"), in each case, as specified by the applicable Legacy Mirion shareholder.

SEC source: 0000950103-21-016338 · dp160254_4-logan.xml · nonDerivative · entry 3

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 865,455

F1 · kind: Pursuant to the Business Combination Agreement, dated June 17, 2021 (as amended on September 3, 2021), by and among GS Acquisition Holdings Corp II ("GSAH"), Mirion Technologies (TopCo), Ltd ("Legacy Mirion") and the other parties thereto (the "Business Combination Agreement"), GSAH established a Delaware corporation, Mirion IntermediateCo, Inc. ("IntermediateCo") as a subsidiary thereof. A newly-formed subsidiary of IntermediateCo merged with and into Legacy Mirion with Legacy Mirion surviving as a wholly-owned subsidiary of IntermediateCo, with GSAH (which changed its name to Mirion Technologies, Inc. (the "Issuer")) thereby becoming the corporate parent of Legacy Mirion. The transactions contemplated by the Business Combination Agreement are referred to herein as the "Business Combination".

F2 · kind: Pursuant to the terms of the Business Combination Agreement, the shareholders of Legacy Mirion at the effective time of the Business Combination (the "Effective Time") were entitled to elect to receive, for each Class A ordinary share of Legacy Mirion held by them immediately prior to the Effective Time, a combination of cash and shares of Class B common stock of the Issuer ("Common Stock"), in each case, as specified by the applicable Legacy Mirion shareholder.

F5 · kind: Reflects shares of Common Stock acquired pursuant to the Business Combination Agreement, which are held of record by the J.P. Morgan Trust Company of Delaware in its capacity as Trustee of the Alison Paige Logan GST Exempt Trust (the "A. Logan Trust"). Member(s) of the Reporting Person's immediate family are holders of the A. Logan Trust, and the Reporting Person may be deemed to exercise voting and investment power over such shares of Common Stock; however, the J.P. Morgan Trust Company of Delaware in its capacity as Trustee of A. Logan Trust has sole voting and dispositive power over the shares of Common Stock held thereby. The Reporting Person disclaims ownership of these shares of Common Stock except to the extent of his pecuniary interest therein.

F1 · price: Pursuant to the Business Combination Agreement, dated June 17, 2021 (as amended on September 3, 2021), by and among GS Acquisition Holdings Corp II ("GSAH"), Mirion Technologies (TopCo), Ltd ("Legacy Mirion") and the other parties thereto (the "Business Combination Agreement"), GSAH established a Delaware corporation, Mirion IntermediateCo, Inc. ("IntermediateCo") as a subsidiary thereof. A newly-formed subsidiary of IntermediateCo merged with and into Legacy Mirion with Legacy Mirion surviving as a wholly-owned subsidiary of IntermediateCo, with GSAH (which changed its name to Mirion Technologies, Inc. (the "Issuer")) thereby becoming the corporate parent of Legacy Mirion. The transactions contemplated by the Business Combination Agreement are referred to herein as the "Business Combination".

F2 · price: Pursuant to the terms of the Business Combination Agreement, the shareholders of Legacy Mirion at the effective time of the Business Combination (the "Effective Time") were entitled to elect to receive, for each Class A ordinary share of Legacy Mirion held by them immediately prior to the Effective Time, a combination of cash and shares of Class B common stock of the Issuer ("Common Stock"), in each case, as specified by the applicable Legacy Mirion shareholder.

SEC source: 0000950103-21-016338 · dp160254_4-logan.xml · nonDerivative · entry 2

Logan Thomas D · CIK 0001486259 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 865,455

F1 · kind: Pursuant to the Business Combination Agreement, dated June 17, 2021 (as amended on September 3, 2021), by and among GS Acquisition Holdings Corp II ("GSAH"), Mirion Technologies (TopCo), Ltd ("Legacy Mirion") and the other parties thereto (the "Business Combination Agreement"), GSAH established a Delaware corporation, Mirion IntermediateCo, Inc. ("IntermediateCo") as a subsidiary thereof. A newly-formed subsidiary of IntermediateCo merged with and into Legacy Mirion with Legacy Mirion surviving as a wholly-owned subsidiary of IntermediateCo, with GSAH (which changed its name to Mirion Technologies, Inc. (the "Issuer")) thereby becoming the corporate parent of Legacy Mirion. The transactions contemplated by the Business Combination Agreement are referred to herein as the "Business Combination".

F2 · kind: Pursuant to the terms of the Business Combination Agreement, the shareholders of Legacy Mirion at the effective time of the Business Combination (the "Effective Time") were entitled to elect to receive, for each Class A ordinary share of Legacy Mirion held by them immediately prior to the Effective Time, a combination of cash and shares of Class B common stock of the Issuer ("Common Stock"), in each case, as specified by the applicable Legacy Mirion shareholder.

F4 · kind: Reflects shares of Common Stock acquired pursuant to the Business Combination Agreement, which are held of record by the J.P. Morgan Trust Company of Delaware in its capacity as Trustee of the Mary Hancock Logan GST Exempt Trust (the "M. Logan Trust"). Member(s) of the Reporting Person's immediate family are holders of the M. Logan Trust, and the Reporting Person may be deemed to exercise voting and investment power over such shares of Common Stock; however, the J.P. Morgan Trust Company of Delaware in its capacity as Trustee of M. Logan Trust has sole voting and dispositive power over the shares of Common Stock held thereby. The Reporting Person disclaims ownership of these shares of Common Stock except to the extent of his pecuniary interest therein.

F1 · price: Pursuant to the Business Combination Agreement, dated June 17, 2021 (as amended on September 3, 2021), by and among GS Acquisition Holdings Corp II ("GSAH"), Mirion Technologies (TopCo), Ltd ("Legacy Mirion") and the other parties thereto (the "Business Combination Agreement"), GSAH established a Delaware corporation, Mirion IntermediateCo, Inc. ("IntermediateCo") as a subsidiary thereof. A newly-formed subsidiary of IntermediateCo merged with and into Legacy Mirion with Legacy Mirion surviving as a wholly-owned subsidiary of IntermediateCo, with GSAH (which changed its name to Mirion Technologies, Inc. (the "Issuer")) thereby becoming the corporate parent of Legacy Mirion. The transactions contemplated by the Business Combination Agreement are referred to herein as the "Business Combination".

F2 · price: Pursuant to the terms of the Business Combination Agreement, the shareholders of Legacy Mirion at the effective time of the Business Combination (the "Effective Time") were entitled to elect to receive, for each Class A ordinary share of Legacy Mirion held by them immediately prior to the Effective Time, a combination of cash and shares of Class B common stock of the Issuer ("Common Stock"), in each case, as specified by the applicable Legacy Mirion shareholder.