GPGI

SEC source: 0000950142-25-000405 · es250591881_4-cotej.xml · nonDerivative · entry 2

Cote John D. · CIK 0002036852 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 441,773

F3 · price: The price reported in Column 4 is the weighted average price. These shares were purchased in multiple transactions at prices ranging from $15.25 to $15.62, inclusive.

F2 · ownership.nature: The securities of the Issuer are or may be deemed to be beneficially owned by (1) Tungsten 2024 LLC ("Tungsten"), directly, (ii) John Cote, indirectly as a result of being the manager of Tungsten, and (iii) Thomas Knott, indirectly as a result of his consultation right with respect to Tungsten. Each of Tungsten, Mr. John Cote and Mr. Knott disclaim beneficial ownership of any securities reported by any person except to the extent of their pecuniary interest therein.

SEC source: 0000950142-25-000407 · es250591885_4-sponsors.xml · nonDerivative · entry 2

Resolute Compo Holdings LLC · CIK 0002037164 · Director · 10% owner

Tungsten 2024 LLC · CIK 0002037065 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 441,773

F3 · price: The price reported in Column 4 is the weighted average price. These shares were purchased in multiple transactions at prices ranging from $15.25 to $15.62, inclusive.

F2 · ownership.nature: The securities of the Issuer are or may be deemed to be beneficially owned by (1) Tungsten 2024 LLC ("Tungsten"), directly, (ii) John Cote, indirectly as a result of being the manager of Tungsten, and (iii) Thomas Knott, indirectly as a result of his consultation right with respect to Tungsten. Each of Tungsten, Mr. John Cote and Mr. Knott disclaim beneficial ownership of any securities reported by any person except to the extent of their pecuniary interest therein.

SEC source: 0000950142-25-000406 · es250591884_4-knott.xml · nonDerivative · entry 2

Knott Thomas R. · CIK 0001816476 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 441,773

F3 · price: The price reported in Column 4 is the weighted average price. These shares were purchased in multiple transactions at prices ranging from $15.25 to $15.62, inclusive.

F2 · ownership.nature: The securities of the Issuer are or may be deemed to be beneficially owned by (1) Tungsten 2024 LLC ("Tungsten"), directly, (ii) John Cote, indirectly as a result of being the manager of Tungsten, and (iii) Thomas Knott, indirectly as a result of his consultation right with respect to Tungsten. Each of Tungsten, Mr. John Cote and Mr. Knott disclaim beneficial ownership of any securities reported by any person except to the extent of their pecuniary interest therein.

SEC source: 0000950142-25-000405 · es250591881_4-cotej.xml · nonDerivative · entry 1

Cote John D. · CIK 0002036852 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 221,186

F1 · price: The price reported in Column 4 is the weighted average price. These shares were purchased in multiple transactions at prices ranging from $14.72 to $15.13, inclusive. The reporting person undertakes to provide CompoSecure, Inc. (the "Issuer"), any securityholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in footnotes (1), (3) and (4) to this Form 4.

F2 · ownership.nature: The securities of the Issuer are or may be deemed to be beneficially owned by (1) Tungsten 2024 LLC ("Tungsten"), directly, (ii) John Cote, indirectly as a result of being the manager of Tungsten, and (iii) Thomas Knott, indirectly as a result of his consultation right with respect to Tungsten. Each of Tungsten, Mr. John Cote and Mr. Knott disclaim beneficial ownership of any securities reported by any person except to the extent of their pecuniary interest therein.

SEC source: 0000950142-25-000407 · es250591885_4-sponsors.xml · nonDerivative · entry 1

Resolute Compo Holdings LLC · CIK 0002037164 · Director · 10% owner

Tungsten 2024 LLC · CIK 0002037065 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 221,186

F1 · price: The price reported in Column 4 is the weighted average price. These shares were purchased in multiple transactions at prices ranging from $14.72 to $15.13, inclusive. The reporting person undertakes to provide CompoSecure, Inc. (the "Issuer"), any securityholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in footnotes (1), (3) and (4) to this Form 4.

F2 · ownership.nature: The securities of the Issuer are or may be deemed to be beneficially owned by (1) Tungsten 2024 LLC ("Tungsten"), directly, (ii) John Cote, indirectly as a result of being the manager of Tungsten, and (iii) Thomas Knott, indirectly as a result of his consultation right with respect to Tungsten. Each of Tungsten, Mr. John Cote and Mr. Knott disclaim beneficial ownership of any securities reported by any person except to the extent of their pecuniary interest therein.

SEC source: 0000950142-25-000406 · es250591884_4-knott.xml · nonDerivative · entry 1

Knott Thomas R. · CIK 0001816476 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 221,186

F1 · price: The price reported in Column 4 is the weighted average price. These shares were purchased in multiple transactions at prices ranging from $14.72 to $15.13, inclusive. The reporting person undertakes to provide CompoSecure, Inc. (the "Issuer"), any securityholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in footnotes (1), (3) and (4) to this Form 4.

F2 · ownership.nature: The securities of the Issuer are or may be deemed to be beneficially owned by (1) Tungsten 2024 LLC ("Tungsten"), directly, (ii) John Cote, indirectly as a result of being the manager of Tungsten, and (iii) Thomas Knott, indirectly as a result of his consultation right with respect to Tungsten. Each of Tungsten, Mr. John Cote and Mr. Knott disclaim beneficial ownership of any securities reported by any person except to the extent of their pecuniary interest therein.

SEC source: 0001104659-25-000939 · tm251929-3_4seq1.xml · nonDerivative · entry 3

Maes Gregoire · CIK 0001885789 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 684,185

F3 · shares: Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of 53,565 restricted stock units ("RSUs") that vested on January 1, 2025. These RSUs were originally granted on March 15, 2024 in the aggregate amount of 160,694 RSUs, for which the remaining 107,129 RSUs (the "2024 Unvested Time-Vesting RSUs") will continue to vest ratably on each of, January 1, 2026 and January 1, 2027, respectively, subject to the reporting person's continued service as of the applicable vesting date.

F4 · balance_after: Includes (A) 179,228 shares of Class A Common Stock owned by the reporting person, (B) 62,500 shares of Class A Common Stock underlying the 2022 Unvested Time-Vesting RSUs, (C) 43,658 shares of Class A Common Stock underlying the 2023 Unvested Time-Vesting RSUs, (D) 107,129 shares of Class A Common Stock underlying the 2024 Unvested Time-Vesting RSUs, and (E) 291,670 performance-vesting RSUs, which will vest over the applicable performance period based on the achievement of the provided performance targets, as set forth in the respective governing award agreement, subject to the reporting person's continued service as of the applicable vesting date and that will be settled into Class A Common Stock upon vesting.. The RSUs will be settled into Class A Common Stock upon vesting and may be settled net of shares withheld to pay applicable taxes.

SEC source: 0001104659-25-000939 · tm251929-3_4seq1.xml · nonDerivative · entry 2

Maes Gregoire · CIK 0001885789 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 710,925

F2 · shares: Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of 43,659 restricted stock units ("RSUs") that vested on January 1, 2025. These RSUs were originally granted on March 9, 2023 in the aggregate amount of 130,976 RSUs, for which the remaining 43,658 RSUs (the "2023 Unvested Time-Vesting RSUs") will continue to vest on January 1, 2026, subject to the reporting person's continued service as of the vesting date.

SEC source: 0001104659-25-000939 · tm251929-3_4seq1.xml · nonDerivative · entry 1

Maes Gregoire · CIK 0001885789 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 732,720

F1 · shares: Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of 62,500 restricted stock units ("RSUs") that vested on January 1, 2025. These RSUs were originally granted on March 16, 2022 in the aggregate amount of 250,000 RSUs, for which the remaining 62,500 RSUs (the "2022 Unvested Time-Vesting RSUs") will continue to vest on January 1, 2026, subject to the reporting person's continued service as of the vesting date.

SEC source: 0001104659-25-000937 · tm251929-4_4seq1.xml · nonDerivative · entry 3

Wilk Jonathan · CIK 0001885796 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,295,302

F3 · shares: Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of 235,753 RSUs that vested on January 1, 2025. These RSUs were originally granted on March 15, 2024 in the aggregate amount of 707,258 RSUs, for which the remaining 471,505 RSUs (the "2024 Unvested Time-Vesting RSUs") will continue to vest ratably on each of, January 1, 2026 and January 1, 2027, respectively, subject to the reporting person's continued service as of the applicable vesting date.

F4 · balance_after: Includes (A) 912,449 shares of Class A Common Stock owned directly by the reporting person, (B) 280,862 shares of Class A Common Stock underlying the 2022 Unvested Time-Vesting RSUs, (C) 174,635 shares of Class A Common Stock underlying the 2023 Unvested Time-Vesting RSUs, and (D) 471,505 shares of Class A Common Stock underlying the 2024 Unvested Time-Vesting RSU.

F5 · balance_after: Includes 224,690 performance-vesting RSUs granted on March 16, 2022, which will vest over the applicable performance period based on the achievement of the provided performance targets, as set forth in the governing award agreement, subject to the Reporting Person's continued service as of the applicable vesting date and that will be settled into Class A Common Stock upon vesting.

F6 · balance_after: Includes 523,903 performance-vesting RSUs granted on March 9, 2023, which will vest over the applicable performance period based on the achievement of the provided performance targets, as set forth in the governing award agreement, subject to the Reporting Person's continued service as of the applicable vesting date and that will be settled into Class A Common Stock upon vesting.

F7 · balance_after: Includes 707,258 performance-vesting RSUs granted on March 15, 2024, which will vest over the applicable performance period based on the achievement of the provided performance targets, as set forth in the governing award agreement, subject to the Reporting Person's continued service as of the applicable vesting date and that will be settled into Class A Common Stock upon vesting.

SEC source: 0001104659-25-000937 · tm251929-4_4seq1.xml · nonDerivative · entry 2

Wilk Jonathan · CIK 0001885796 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,414,594

F2 · shares: Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of 174,634 RSUs that vested on January 1, 2025. These RSUs were originally granted on March 9, 2023 in the aggregate amount of 523,903 RSUs, for which the remaining 174,635 RSUs (the "2023 Unvested Time-Vesting RSUs") will continue to vest on January 1, 2026, subject to the reporting person's continued service as of the vesting date.

SEC source: 0001104659-25-000937 · tm251929-4_4seq1.xml · nonDerivative · entry 1

Wilk Jonathan · CIK 0001885796 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,502,959

F1 · shares: Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of 280,863 restricted stock units ("RSUs") that vested on January 1, 2025. These RSUs were originally granted on March 16, 2022 in the aggregate amount of 1,123,451 RSUs, for which the remaining 280,862 RSUs (the "2022 Unvested Time-Vesting RSUs") will continue to vest on January 1, 2026, subject to the reporting person's continued service as of the vesting date.

SEC source: 0001104659-25-000936 · tm251929-1_4seq1.xml · nonDerivative · entry 3

Gourbault Amanda Mandy · CIK 0001900531 · Chief Revenue Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 832,404

F3 · shares: Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of 53,565 restricted stock units ("RSUs") that vested on January 1, 2025. These RSUs were originally granted on March 15, 2024 in the aggregate amount of 160,694 RSUs, for which the remaining 107,129 RSUs (the "2024 Unvested Time-Vesting RSUs") will continue to vest ratably on each of January 1, 2026 and January 1, 2027, respectively, subject to the reporting person's continued service as of the applicable vesting date.

F4 · balance_after: Includes (A) 314,947 shares of Class A Common Stock owned by the reporting person, inclusive of shares previously purchased by the reporting person under the Company's Employee Stock Purchase Plan, (B) 75,000 shares of Class A Common Stock underlying the 2022 Unvested Time-Vesting RSUs, (C) 43,658 shares of Class A Common Stock underlying the 2023 Unvested Time-Vesting RSUs, (D) 107,129 shares of Class A Common Stock underlying the 2024 Unvested Time-Vesting RSUs, and (E) 291,670 performance-vesting RSUs, which will vest over the applicable performance period based on the achievement of the provided performance targets, as set forth in the respective governing award agreement, subject to the reporting person's continued service as of the applicable vesting date and that will be settled into Class A Common Stock upon vesting. The RSUs will be settled into Class A Common Stock upon vesting and may be settled net of shares withheld to pay applicable taxes.

SEC source: 0001104659-25-000936 · tm251929-1_4seq1.xml · nonDerivative · entry 2

Gourbault Amanda Mandy · CIK 0001900531 · Chief Revenue Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 855,930

F2 · shares: Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of 43,659 restricted stock units ("RSUs") that vested on January 1, 2025. These RSUs were originally granted on March 9, 2023 in the aggregate amount of 130,976 RSUs, for which the remaining 43,658 RSUs (the "2023 Unvested Time-Vesting RSUs") will continue to vest on January 1, 2026, subject to the reporting person's continued service as of the vesting date.

SEC source: 0001104659-25-000936 · tm251929-1_4seq1.xml · nonDerivative · entry 1

Gourbault Amanda Mandy · CIK 0001900531 · Chief Revenue Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 875,106

F1 · shares: Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of 75,000 restricted stock units ("RSUs") that vested on January 1, 2025. These RSUs were originally granted on March 16, 2022 in the aggregate amount of 300,000 RSUs, for which the remaining 75,000 RSUs (the "2022 Unvested Time-Vesting RSUs") will continue to vest on January 1, 2026, subject to the reporting person's continued service as of the vesting date.

SEC source: 0001104659-25-000938 · tm251929-5_4seq1.xml · nonDerivative · entry 3

Fitzsimmons Timothy Walter · CIK 0001885866 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 811,718

F3 · shares: Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of 40,720 restricted stock units ("RSUs") that vested on January 1, 2025. These RSUs were originally granted on March 15, 2024 in the aggregate amount of 122,158 RSUs, for which the remaining 81,438 RSUs (the "2024 Unvested Time-Vesting RSUs") will continue to vest ratably on each of January 1, 2026 and January 1, 2027, respectively, subject to the reporting person's continued service as of the applicable vesting date.

F4 · balance_after: Includes (A) 423,378 shares of Class A Common Stock owned by the reporting person, (B) 62,500 shares of Class A Common Stock underlying the 2022 Unvested Time-Vesting RSUs, (C) 30,561 shares of Class A Common Stock underlying the 2023 Unvested Time-Vesting RSUs, (D) 81,438 shares of Class A Common Stock underlying the 2024 Unvested Time-Vesting RSUs, and (E) 213,841 performance-vesting RSUs, which will vest over the applicable performance period based on the achievement of the provided performance targets, as set forth in the respective governing award agreement, subject to the reporting person's continued service as of the applicable vesting date and that will be settled into Class A Common Stock upon vesting. The RSUs will be settled into Class A Common Stock upon vesting and may be settled net of shares withheld to pay applicable taxes.

SEC source: 0001104659-25-000938 · tm251929-5_4seq1.xml · nonDerivative · entry 2

Fitzsimmons Timothy Walter · CIK 0001885866 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 829,603

F2 · shares: Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of 30,561 restricted stock units ("RSUs") that vested on January 1, 2025. These RSUs were originally granted on March 9, 2023 in the aggregate amount of 91,683 RSUs, for which the remaining 30,561 RSUs (the "2023 Unvested Time-Vesting RSUs") will continue to vest on January 1, 2026, subject to the reporting person's continued service as of the vesting date.

SEC source: 0001104659-25-000938 · tm251929-5_4seq1.xml · nonDerivative · entry 1

Fitzsimmons Timothy Walter · CIK 0001885866 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 843,026

F1 · shares: Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of 62,500 restricted stock units ("RSUs") that vested on January 1, 2025. These RSUs were originally granted on March 16, 2022 in the aggregate amount of 250,000 RSUs, for which the remaining 62,500 RSUs (the "2022 Unvested Time-Vesting RSUs") will continue to vest on January 1, 2026, subject to the reporting person's continued service as of the vesting date.

SEC source: 0001104659-25-000941 · tm251929-2_4seq1.xml · nonDerivative · entry 3

Lowe Adam Joseph · CIK 0001885801 · Chief Product & Innov. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,239,130

F3 · shares: Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of 73,925 restricted stock units ("RSUs") that vested on January 1, 2025. These RSUs were originally granted on March 15, 2024 in the aggregate amount of 221,773 RSUs, for which the remaining 147,848 RSUs (the "2024 Unvested Time-Vesting RSUs") will continue to vest ratably on each of, January 1, 2026 and January 1, 2027, respectively, subject to the reporting person's continued service as of the applicable vesting date.

F4 · balance_after: Includes (A) 544,875 shares of Class A Common Stock owned by the reporting person, (B) 150,000 shares of Class A Common Stock underlying the 2022 Unvested Time-Vesting RSUs, (C) 43,658 shares of Class A Common Stock underlying the 2023 Unvested Time-Vesting RSUs, (D) 147,848 shares of Class A Common Stock underlying the 2024 Unvested Time-Vesting RSUs, and (E) 352,749 performance-vesting RSUs, which will vest over the applicable performance period based on the achievement of the provided performance targets, as set forth in the respective governing award agreement, subject to the reporting person's continued service as of the applicable vesting date and that will be settled into Class A Common Stock upon vesting. The RSUs will be settled into Class A Common Stock upon vesting and may be settled net of shares withheld to pay applicable taxes.

SEC source: 0001104659-25-000941 · tm251929-2_4seq1.xml · nonDerivative · entry 2

Lowe Adam Joseph · CIK 0001885801 · Chief Product & Innov. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,275,221

F2 · shares: Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of 43,659 restricted stock units ("RSUs") that vested on January 1, 2025. These RSUs were originally granted on March 9, 2023 in the aggregate amount of 130,976 RSUs, for which the remaining 43,658 RSUs (the "2023 Unvested Time-Vesting RSUs") will continue to vest on January 1, 2026, subject to the reporting person's continued service as of the vesting date.

SEC source: 0001104659-25-000941 · tm251929-2_4seq1.xml · nonDerivative · entry 1

Lowe Adam Joseph · CIK 0001885801 · Chief Product & Innov. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,296,536

F1 · shares: Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of 150,000 restricted stock units ("RSUs") that vested on January 1, 2025. These RSUs were originally granted on March 16, 2022 in the aggregate amount of 600,000 RSUs, for which the remaining 150,000 RSUs (the "2022 Unvested Time-Vesting RSUs") will continue to vest on January 1, 2026, subject to the reporting person's continued service as of the vesting date.

SEC source: 0001104659-24-130353 · tm2431578-3_4seq1.xml · nonDerivative · entry 2

Maes Gregoire · CIK 0001885789 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 764,515

F3 · balance_after: Includes (A) 159,723 restricted stock units ("RSUs"), which will vest on January 1, 2025, (B) 159,724 RSUs, which will vest on January 1, 2026, and (C) 53,564 RSUs, which will vest on January 1, 2027. The RSUs will be settled into Class A Common Stock upon vesting and may be settled net of shares withheld to pay applicable taxes.

F4 · balance_after: Includes 130,976 performance-vesting RSUs, which will vest over the applicable performance period based on the achievement of the provided performance targets, as set forth in the governing award agreement, subject to the reporting person's continued service as of the applicable vesting date and that will be settled into Class A Common Stock upon vesting.

F5 · balance_after: Includes 160,694 performance-vesting RSUs, which will vest over the applicable performance period based on the achievement of the provided performance targets, as set forth in the governing award agreement, subject to the reporting person's continued service as of the applicable vesting date and that will be settled into Class A Common Stock upon vesting.

SEC source: 0001104659-24-130353 · tm2431578-3_4seq1.xml · nonDerivative · entry 1

Maes Gregoire · CIK 0001885789 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 767,455

F1 · kind: Issued to the Reporting Person on December 17, 2024 for no additional consideration pursuant to an earn-out provision in the agreement and plan of merger (the "Merger Agreement") executed in connection with the acquisition by the issuer (f/k/a Roman DBDR Tech Acquisition Corp.) of CompoSecure Holdings, L.L.C. (the "Merger"), which was completed on December 27, 2021. Class B Common Units of CompoSecure Holdings, L.L.C. issuable pursuant to the earn-out provision were immediately exchanged for no additional consideration for an equal number of shares of Class A Common Stock.

F1 · price: Issued to the Reporting Person on December 17, 2024 for no additional consideration pursuant to an earn-out provision in the agreement and plan of merger (the "Merger Agreement") executed in connection with the acquisition by the issuer (f/k/a Roman DBDR Tech Acquisition Corp.) of CompoSecure Holdings, L.L.C. (the "Merger"), which was completed on December 27, 2021. Class B Common Units of CompoSecure Holdings, L.L.C. issuable pursuant to the earn-out provision were immediately exchanged for no additional consideration for an equal number of shares of Class A Common Stock.

F2 · price: The value of these shares was established in the Merger Agreement.

SEC source: 0001104659-24-130356 · tm2431578-4_4seq1.xml · nonDerivative · entry 2

Wilk Jonathan · CIK 0001885796 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,645,671

F4 · shares: Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of 224,690 performance-vesting restricted stock units ("RSUs") that vested on December 17, 2024. These RSUs were originally granted on March 16, 2022 in the aggregate amount of 449,380 RSUs, for which the remaining 224,690 RSUs will continue to which will vest over the applicable performance period based on the achievement of the provided performance targets, as set forth in the governing award agreement, subject to the Reporting Person's continued service as of the applicable vesting date.

F5 · balance_after: Includes (A) 691,249 RSUs, which will vest on January 1, 2025, (B) 691,250 RSUs, which will vest on January 1, 2026, and (C) 235,753 RSUs, which will vest on January 1, 2027. The RSUs will be settled into Class A Common Stock upon vesting and may be settled net of shares withheld to pay applicable taxes.

F6 · balance_after: Includes 224,690 performance-vesting RSUs granted on March 16, 2022, which will vest over the applicable performance period based on the achievement of the provided performance targets, as set forth in the governing award agreement, subject to the Reporting Person's continued service as of the applicable vesting date and that will be settled into Class A Common Stock upon vesting.

F7 · balance_after: Includes 523,903 performance-vesting RSUs granted on March 9, 2023, which will vest over the applicable performance period based on the achievement of the provided performance targets, as set forth in the governing award agreement, subject to the Reporting Person's continued service as of the applicable vesting date and that will be settled into Class A Common Stock upon vesting.

F8 · balance_after: Includes 707,258 performance-vesting RSUs granted on March 15, 2024, which will vest over the applicable performance period based on the achievement of the provided performance targets, as set forth in the governing award agreement, subject to the Reporting Person's continued service as of the applicable vesting date and that will be settled into Class A Common Stock upon vesting.

SEC source: 0001104659-24-130356 · tm2431578-4_4seq1.xml · nonDerivative · entry 1

Wilk Jonathan · CIK 0001885796 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By CompoSecure Employee LLC

Disclosed balance after: 688,201

F1 · kind: Issued to the Reporting Person on December 17, 2024 for no additional consideration pursuant to an earn-out provision in the agreement and plan of merger (the "Merger Agreement") executed in connection with the acquisition by the issuer (f/k/a Roman DBDR Tech Acquisition Corp.) of CompoSecure Holdings, L.L.C. (the "Merger"), which was completed on December 27, 2021. Class B Common Units of CompoSecure Holdings, L.L.C. issuable pursuant to the earn-out provision were immediately exchanged for no additional consideration for an equal number of shares of Class A Common Stock.

F1 · price: Issued to the Reporting Person on December 17, 2024 for no additional consideration pursuant to an earn-out provision in the agreement and plan of merger (the "Merger Agreement") executed in connection with the acquisition by the issuer (f/k/a Roman DBDR Tech Acquisition Corp.) of CompoSecure Holdings, L.L.C. (the "Merger"), which was completed on December 27, 2021. Class B Common Units of CompoSecure Holdings, L.L.C. issuable pursuant to the earn-out provision were immediately exchanged for no additional consideration for an equal number of shares of Class A Common Stock.

F2 · price: The value of these shares was established in the Merger Agreement.

F3 · ownership.nature: The reported securities are held directly by CompoSecure Employee LLC, and the Reporting Person (the sole member of CompoSecure Employee LLC) may be deemed to have sole power to vote or dispose of these securities. The Reporting Person may be deemed the beneficial owner of the shares of Class A Common Stock held by CompoSecure Employee LLC because he is its sole member. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his pecuniary interest therein.

SEC source: 0001104659-24-130348 · tm2431578-1_4seq1.xml · nonDerivative · entry 2

Fitzsimmons Timothy Walter · CIK 0001885866 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 871,071

F3 · balance_after: Includes (A) 133,780 restricted stock units ("RSUs"), which will vest on January 1, 2025, (B) 133,780 RSUs, which will vest on January 1, 2026, and (C) 40,720 RSUs, which will vest on January 1, 2027. The RSUs will be settled into Class A Common Stock upon vesting and may be settled net of shares withheld to pay applicable taxes.

F4 · balance_after: Includes 91,683 performance-vesting RSUs, which will vest over the applicable performance period based on the achievement of the provided performance targets, as set forth in the governing award agreement, subject to the reporting person's continued service as of the applicable vesting date and that will be settled into Class A Common Stock upon vesting.

F5 · balance_after: Includes 122,158 performance-vesting RSUs, which will vest over the applicable performance period based on the achievement of the provided performance targets, as set forth in the governing award agreement, subject to the reporting person's continued service as of the applicable vesting date and that will be settled into Class A Common Stock upon vesting.

SEC source: 0001104659-24-130348 · tm2431578-1_4seq1.xml · nonDerivative · entry 1

Fitzsimmons Timothy Walter · CIK 0001885866 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 887,529

F1 · kind: Issued to the Reporting Person on December 17, 2024 for no additional consideration pursuant to an earn-out provision in the agreement and plan of merger (the "Merger Agreement") executed in connection with the acquisition by the issuer (f/k/a Roman DBDR Tech Acquisition Corp.) of CompoSecure Holdings, L.L.C. (the "Merger"), which was completed on December 27, 2021. Class B Common Units of CompoSecure Holdings, L.L.C. issuable pursuant to the earn-out provision were immediately exchanged for no additional consideration for an equal number of shares of Class A Common Stock.

F1 · price: Issued to the Reporting Person on December 17, 2024 for no additional consideration pursuant to an earn-out provision in the agreement and plan of merger (the "Merger Agreement") executed in connection with the acquisition by the issuer (f/k/a Roman DBDR Tech Acquisition Corp.) of CompoSecure Holdings, L.L.C. (the "Merger"), which was completed on December 27, 2021. Class B Common Units of CompoSecure Holdings, L.L.C. issuable pursuant to the earn-out provision were immediately exchanged for no additional consideration for an equal number of shares of Class A Common Stock.

F2 · price: The value of these shares was established in the Merger Agreement.

SEC source: 0001104659-24-130350 · tm2431578-2_4seq1.xml · nonDerivative · entry 2

Lowe Adam Joseph · CIK 0001885801 · Chief Product & Innov. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,370,361

F3 · balance_after: Includes (A) 267,583 restricted stock units ("RSUs"), which will vest on January 1, 2025, (B) 267,583 RSUs, which will vest on January 1, 2026, and (C) 73,925 RSUs, which will vest on January 1, 2027. The RSUs will be settled into Class A Common Stock upon vesting and may be settled net of shares withheld to pay applicable taxes.

F4 · balance_after: Includes 130,976 performance-vesting RSUs, which will vest over the applicable performance period based on the achievement of the provided performance targets, as set forth in the governing award agreement, subject to the reporting person's continued service as of the applicable vesting date and that will be settled into Class A Common Stock upon vesting.

F5 · balance_after: Includes 221,773 performance-vesting RSUs, which will vest over the applicable performance period based on the achievement of the provided performance targets, as set forth in the governing award agreement, subject to the reporting person's continued service as of the applicable vesting date and that will be settled into Class A Common Stock upon vesting.

SEC source: 0001104659-24-130350 · tm2431578-2_4seq1.xml · nonDerivative · entry 1

Lowe Adam Joseph · CIK 0001885801 · Chief Product & Innov. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,382,407

F1 · kind: Issued to the Reporting Person on December 17, 2024 for no additional consideration pursuant to an earn-out provision in the agreement and plan of merger (the "Merger Agreement") executed in connection with the acquisition by the issuer (f/k/a Roman DBDR Tech Acquisition Corp.) of CompoSecure Holdings, L.L.C. (the "Merger"), which was completed on December 27, 2021. Class B Common Units of CompoSecure Holdings, L.L.C. issuable pursuant to the earn-out provision were immediately exchanged for no additional consideration for an equal number of shares of Class A Common Stock.

F1 · price: Issued to the Reporting Person on December 17, 2024 for no additional consideration pursuant to an earn-out provision in the agreement and plan of merger (the "Merger Agreement") executed in connection with the acquisition by the issuer (f/k/a Roman DBDR Tech Acquisition Corp.) of CompoSecure Holdings, L.L.C. (the "Merger"), which was completed on December 27, 2021. Class B Common Units of CompoSecure Holdings, L.L.C. issuable pursuant to the earn-out provision were immediately exchanged for no additional consideration for an equal number of shares of Class A Common Stock.

F2 · price: The value of these shares was established in the Merger Agreement.

SEC source: 0001104659-24-127354 · tm2430707-1_4seq1.xml · derivative · entry 7

Lowe Adam Joseph · CIK 0001885801 · Chief Product & Innov. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 109,974 shares

Expires 2028-10-30

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.

F6 · derivative.exercise_date: All of the shares subject to this option are fully vested and exercisable as of the date hereof.

F7 · derivative.exercise_date: As of the date hereof, all shares subject to this option had been fully exercised.

SEC source: 0001104659-24-127354 · tm2430707-1_4seq1.xml · nonDerivative · entry 5

Lowe Adam Joseph · CIK 0001885801 · Chief Product & Innov. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,358,692

F3 · balance_after: Includes (A) 267,583 restricted stock units ("RSUs"), which will vest on January 1, 2025, (B) 267,583 RSUs, which will vest on January 1, 2026, and (C) 73,925 RSUs, which will vest on January 1, 2027. The RSUs will be settled into Class A Common Stock upon vesting and may be settled net of shares withheld to pay applicable taxes.

F4 · balance_after: Includes 130,976 performance-vesting RSUs, which will vest over the applicable performance period based on the achievement of the provided performance targets, as set forth in the governing award agreement, subject to the reporting person's continued service as of the applicable vesting date and that will be settled into Class A Common Stock upon vesting.

F5 · balance_after: Includes 221,773 performance-vesting RSUs, which will vest over the applicable performance period based on the achievement of the provided performance targets, as set forth in the governing award agreement, subject to the reporting person's continued service as of the applicable vesting date and that will be settled into Class A Common Stock upon vesting.

SEC source: 0001104659-24-127354 · tm2430707-1_4seq1.xml · nonDerivative · entry 4

Lowe Adam Joseph · CIK 0001885801 · Chief Product & Innov. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,358,892

F2 · price: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $15.745 to $16.74, inclusive.

SEC source: 0001104659-24-127354 · tm2430707-1_4seq1.xml · nonDerivative · entry 3

Lowe Adam Joseph · CIK 0001885801 · Chief Product & Innov. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,425,042

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.

SEC source: 0001104659-24-126849 · tm2430451-1_4seq1.xml · derivative · entry 3

Maes Gregoire · CIK 0001885789 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 100,139

Underlying: Class A Common Stock · 55,137 shares

Expires 2030-06-14

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.

F5 · derivative.exercise_date: All of the shares subject to this option are fully vested and exercisable as of the date hereof.

SEC source: 0001104659-24-126849 · tm2430451-1_4seq1.xml · nonDerivative · entry 2

Maes Gregoire · CIK 0001885789 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 762,009

F1 · price: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $16.20 to $16.60, inclusive. The reporting person undertakes to provide CompoSecure, Inc. (the "Issuer"), any securityholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

F2 · balance_after: Includes (A) 159,723 restricted stock units ("RSUs"), which will vest on January 1, 2025, (B) 159,724 RSUs, which will vest on January 1, 2026, and (C) 53,564 RSUs, which will vest on January 1, 2027. The RSUs will be settled into Class A Common Stock upon vesting and may be settled net of shares withheld to pay applicable taxes.

F3 · balance_after: Includes 130,976 performance-vesting RSUs, which will vest over the applicable performance period based on the achievement of the provided performance targets, as set forth in the governing award agreement, subject to the reporting person's continued service as of the applicable vesting date and that will be settled into Class A Common Stock upon vesting.

F4 · balance_after: Includes 160,694 performance-vesting RSUs, which will vest over the applicable performance period based on the achievement of the provided performance targets, as set forth in the governing award agreement, subject to the reporting person's continued service as of the applicable vesting date and that will be settled into Class A Common Stock upon vesting.

SEC source: 0001104659-24-126849 · tm2430451-1_4seq1.xml · nonDerivative · entry 1

Maes Gregoire · CIK 0001885789 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 817,146

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.

SEC source: 0001104659-24-127354 · tm2430707-1_4seq1.xml · derivative · entry 6

Lowe Adam Joseph · CIK 0001885801 · Chief Product & Innov. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 109,974

Underlying: Class A Common Stock · 57,159 shares

Expires 2028-10-30

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.

F6 · derivative.exercise_date: All of the shares subject to this option are fully vested and exercisable as of the date hereof.

SEC source: 0001104659-24-127354 · tm2430707-1_4seq1.xml · nonDerivative · entry 2

Lowe Adam Joseph · CIK 0001885801 · Chief Product & Innov. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,315,068

F1 · price: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $16.20 to $16.33, inclusive. The reporting person undertakes to provide CompoSecure, Inc. (the "Issuer"), any securityholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (1) and (2) to this Form 4.

SEC source: 0001104659-24-127354 · tm2430707-1_4seq1.xml · nonDerivative · entry 1

Lowe Adam Joseph · CIK 0001885801 · Chief Product & Innov. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,349,378

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.

SEC source: 0001104659-24-124113 · tm2429836-1_4seq1.xml · derivative · entry 6

Maes Gregoire · CIK 0001885789 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 155,276

Underlying: Class A Common Stock · 540 shares

Expires 2030-06-14

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.

F5 · derivative.exercise_date: All of the shares subject to this option are fully vested and exercisable as of the date hereof.

SEC source: 0001104659-24-124113 · tm2429836-1_4seq1.xml · nonDerivative · entry 4

Maes Gregoire · CIK 0001885789 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 762,009

F2 · balance_after: Includes (A) 159,723 restricted stock units ("RSUs"), which will vest on January 1, 2025, (B) 159,724 RSUs, which will vest on January 1, 2026, and (C) 53,564 RSUs, which will vest on January 1, 2027. The RSUs will be settled into Class A Common Stock upon vesting and may be settled net of shares withheld to pay applicable taxes.

F3 · balance_after: Includes 130,976 performance-vesting RSUs, which will vest over the applicable performance period based on the achievement of the provided performance targets, as set forth in the governing award agreement, subject to the reporting person's continued service as of the applicable vesting date and that will be settled into Class A Common Stock upon vesting.

F4 · balance_after: Includes 160,694 performance-vesting RSUs, which will vest over the applicable performance period based on the achievement of the provided performance targets, as set forth in the governing award agreement, subject to the reporting person's continued service as of the applicable vesting date and that will be settled into Class A Common Stock upon vesting.

SEC source: 0001104659-24-124113 · tm2429836-1_4seq1.xml · nonDerivative · entry 3

Maes Gregoire · CIK 0001885789 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 762,549

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.

SEC source: 0001104659-24-124113 · tm2429836-1_4seq1.xml · derivative · entry 5

Maes Gregoire · CIK 0001885789 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 155,816

Underlying: Class A Common Stock · 24,323 shares

Expires 2030-06-14

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.

F5 · derivative.exercise_date: All of the shares subject to this option are fully vested and exercisable as of the date hereof.

SEC source: 0001104659-24-124113 · tm2429836-1_4seq1.xml · nonDerivative · entry 2

Maes Gregoire · CIK 0001885789 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 762,009

F1 · price: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $16.20 to $16.38, inclusive. The reporting person undertakes to provide CompoSecure, Inc. (the "Issuer"), any securityholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

SEC source: 0001104659-24-124113 · tm2429836-1_4seq1.xml · nonDerivative · entry 1

Maes Gregoire · CIK 0001885789 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 786,332

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.

SEC source: 0000950142-24-002618 · es240545291_4-mikkilineni.xml · derivative · entry 2

Mikkilineni Krishna · CIK 0001488871 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,839

Underlying: Class A Common Stock · 15,839 shares

Expires 2034-10-18

F1 · derivative.exercise_date: The Stock Options will vest in equal annual installments of 25% each, on October 18, 2025 and on the first, second and third anniversaries thereof.

SEC source: 0000950142-24-002618 · es240545291_4-mikkilineni.xml · derivative · entry 1

Mikkilineni Krishna · CIK 0001488871 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,712

Underlying: Class A Common Stock · 25,712 shares

Expires 2034-10-18

F1 · derivative.exercise_date: The Stock Options will vest in equal annual installments of 25% each, on October 18, 2025 and on the first, second and third anniversaries thereof.

SEC source: 0001104659-24-106045 · tm2425514-1_4seq1.xml · derivative · entry 1

COTE DAVID M · CIK 0001136538 · Director · See Remarks · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 837,037

Underlying: Class A Common Stock · 837,037 shares

Expires 2034-10-01

F1 · derivative.exercise_date: The Stock Options will vest in equal annual installments of 25% each, on October 1, 2025 and on the first, second and third anniversaries thereof.

SEC source: 0001104659-24-106046 · tm2425514-2_4seq1.xml · derivative · entry 2

Cote John D. · CIK 0002036852 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,894

Underlying: Class A Common Stock · 27,894 shares

Expires 2034-10-01

F1 · derivative.exercise_date: The Stock Options will vest in equal annual installments of 25% each, on October 1, 2025 and on the first, second and third anniversaries thereof.

SEC source: 0001104659-24-106046 · tm2425514-2_4seq1.xml · derivative · entry 1

Cote John D. · CIK 0002036852 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,596

Underlying: Class A Common Stock · 18,596 shares

Expires 2034-10-01

F1 · derivative.exercise_date: The Stock Options will vest in equal annual installments of 25% each, on October 1, 2025 and on the first, second and third anniversaries thereof.