Jonathan Wilk - 09 Sep 2025 Form 4 Insider Report for CompoSecure, Inc. (CMPO)

Reporting relationship: President and CEO, Director
Issuer ticker: CMPO
Reported as of: 09 Sep 2025
Net transaction value: -$14,122,554
SEC form: 4
Accepted by SEC: 08 Jan 2026, 21:04:47 UTC
Prior SEC filing: 10 Sep 2025
Source filing: View source filing
Reporting owner signature: /s/ Jonathan Wilk, by attorney-in-fact Steven J. Feder

Key filing fact

Jonathan Wilk filed Form 4 for CompoSecure, Inc. (CMPO) on 08 Jan 2026.

Key facts

This page summarizes Jonathan Wilk's Form 4 filing for CompoSecure, Inc. (CMPO).
5 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 08 Jan 2026, 21:04.

Change

Previous filing in this sequence was filed on 10 Sep 2025.
Current net transaction value: -$14,122,554.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001885796 Primary reporting owner

Wilk Jonathan

Relationship: President and CEO, Director
Address: C/O COMPOSECURE, INC., 309 PIERCE STREET, SOMERSET
Signature: /s/ Jonathan Wilk, by attorney-in-fact Steven J. Feder
Signature date: 08 Jan 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

CMPO transaction

Class A Common Stock

Tax liability

Transaction value: $3,287,117
Shares: -169,439
Change %: -4.7%
Price: $19.40
Shares after: 3,450,281
Date: 09 Sep 2025
Ownership: Direct
Footnotes: F1

CMPO transaction

Class A Common Stock

Tax liability

Transaction value: $4,023,543
Shares: -208,690
Change %: -6%
Price: $19.28
Shares after: 3,241,591
Date: 01 Jan 2026
Ownership: Direct
Footnotes: F2

CMPO transaction

Class A Common Stock

Tax liability

Transaction value: $2,495,777
Shares: -129,449
Change %: -4%
Price: $19.28
Shares after: 3,112,142
Date: 01 Jan 2026
Ownership: Direct
Footnotes: F3

CMPO transaction

Class A Common Stock

Tax liability

Transaction value: $3,369,238
Shares: -174,753
Change %: -5.6%
Price: $19.28
Shares after: 2,937,389
Date: 01 Jan 2026
Ownership: Direct
Footnotes: F4

CMPO transaction

Class A Common Stock

Tax liability

Transaction value: $946,879
Shares: -49,112
Change %: -1.8%
Price: $19.28
Shares after: 2,697,647
Date: 02 Jan 2026
Ownership: Direct
Footnotes: F5, F6, F7, F8

CMPO holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 770,295
Date: 09 Sep 2025
Ownership: By CompoSecure Employee LLC
Footnotes: F8

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 8 footnotes

Footnote F1

Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of performance-vesting restricted stock units ("RSUs") that vested on September 9, 2025, as adjusted in connection with the spin-off of Resolute Holdings Management, Inc. (the "Spin-Off"). These performance-based RSUs were originally granted on March 16, 2022 and vested over the applicable performance period based on the achievement of the provided performance targets, as set forth in the governing award agreement.

Footnote F2

Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of 328,503 restricted stock units ("RSUs") that vested on January 1, 2026. These RSUs were originally granted on March 16, 2022 in the aggregate amount of 1,123,451 RSUs and were adjusted in connection with Spin-Off to include an additional 47,641 RSUs.

Footnote F3

Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of 204,258 RSUs that vested on January 1, 2026. These RSUs were originally granted on March 8, 2023 in the aggregate amount of 523,903 RSUs and were adjusted in connection with the Spin-Off to include an additional 29,623 RSUs.

Footnote F4

Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of 275,742 RSUs that vested on January 1, 2026. These RSUs were originally granted on March 15, 2024 in the aggregate amount of 707,258 RSUs and were adjusted in connection with the Spin-Off to include an additional 79,979 RSUs, for which the remaining 275,742 RSUs (the "2024 Unvested Time-Vesting RSUs") will continue to vest on January 1, 2027, subject to the reporting person's continued service as of the vesting date.

Footnote F5

Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of performance-vesting RSUs that vested on January 1, 2026, as adjusted in connection with the Spin-Off. These performance-based RSUs were originally granted on March 8, 2023 and vested over the applicable performance period based on the achievement of the provided performance targets, as set forth in the governing award agreement.

Footnote F6

Includes (A) 1,473,616 shares of Class A Common Stock owned by the reporting person, (B) 325,513 shares of Class A Common Stock underlying RSUs, which will vest in three equal installments on February 26, 2028, February 26, 2030 and February 26, 2032, and (C) 275,742 shares of Class A Common Stock underlying the 2024 Unvested Time-Vesting RSUs that will vest on January 1, 2027, subject in each case to the reporting person's continued service as of the applicable vesting date. The RSUs will be settled into Class A Common Stock upon vesting and may be settled net of shares withheld to pay applicable taxes.

Footnote F7

Includes 827,227 performance-vesting RSUs, as adjusted in connection with the Spin-Off, 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 in each case to the reporting person's continued service as of the vesting date of 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.

Footnote F8

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.