CompoSecure (CMPO) COO details RSU vesting and tax share withholding

Rhea-AI Filing Summary

CompoSecure, Inc.'s Chief Operating Officer, Gregoire Maes, reported several stock transactions related to restricted stock unit (RSU) vesting and tax withholding. On January 1, 2026, the company withheld 41,709, 28,786 and 35,317 shares of Class A common stock, and on January 2, 2026 it withheld a further 30,515 shares, all at a price of $19.28 per share. In each case, the shares were withheld to satisfy tax obligations arising from RSUs that vested on January 1, 2026.

After these transactions, Maes beneficially owned 645,653 shares of Class A common stock. This includes 285,965 shares owned outright, 110,971 RSUs scheduled to vest in three equal installments on February 26, 2028, February 26, 2030 and February 26, 2032, and 62,650 time-vesting RSUs set to vest on January 1, 2027, all subject to continued service. It also includes 187,952 performance-vesting RSUs that may vest based on performance targets through a vesting date of January 1, 2027.

Insider Trade Summary

4 transactions reported

Mixed 4 txns

Insider Maes Gregoire

Role Chief Operating Officer

Type	Security	Shares	Price	Value
Tax Withholding	Class A Common Stock	30,515	$19.28	$588K
Tax Withholding	Class A Common Stock	41,709	$19.28	$804K
Tax Withholding	Class A Common Stock	28,786	$19.28	$555K
Tax Withholding	Class A Common Stock	35,317	$19.28	$681K

Holdings After Transaction: Class A Common Stock — 645,653 shares (Direct)

Footnotes (1)

1. Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of 73,102 restricted stock units ("RSUs") that vested on January 1, 2026. These RSUs were originally granted on March 16, 2022 in the aggregate amount of 250,000 RSUs and were adjusted in connection with the spin-off of Resolute Holdings Management, Inc. (the "Spin-Off") to include an additional 10,602 RSUs. Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of 51,064 RSUs that vested on January 1, 2026. These RSUs were originally granted on March 8, 2023 in the aggregate amount of 130,976 RSUs and were adjusted in connection with the Spin-Off to include an additional 7,406 RSUs. Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of 62,651 RSUs that vested on January 1, 2026. These RSUs were originally granted on March 15, 2024 in the aggregate amount of 160,694 RSUs and were adjusted in connection with the Spin-Off to include an additional 18,172 RSUs, for which the remaining 62,650 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. Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of 53,329 performance-vesting RSUs that vested on January 1, 2026. Includes (A) 285,965 shares of Class A Common Stock owned by the reporting person, (B) 110,971 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) 62,650 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. Includes 187,952 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 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.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Maes Gregoire

(Last) (First) (Middle)

C/O COMPOSECURE, INC.

309 PIERCE STREET

(Street)

SOMERSET NJ 08873

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
CompoSecure, Inc. [ CMPO ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Operating Officer

3. Date of Earliest Transaction (Month/Day/Year)
01/01/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	01/01/2026		F		41,709(1)	D	$19.28	740,271	D
Class A Common Stock	01/01/2026		F		28,786(2)	D	$19.28	711,485	D
Class A Common Stock	01/01/2026		F		35,317(3)	D	$19.28	676,168	D
Class A Common Stock	01/02/2026		F		30,515(4)	D	$19.28	645,653(5)(6)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of 73,102 restricted stock units ("RSUs") that vested on January 1, 2026. These RSUs were originally granted on March 16, 2022 in the aggregate amount of 250,000 RSUs and were adjusted in connection with the spin-off of Resolute Holdings Management, Inc. (the "Spin-Off") to include an additional 10,602 RSUs.

2. Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of 51,064 RSUs that vested on January 1, 2026. These RSUs were originally granted on March 8, 2023 in the aggregate amount of 130,976 RSUs and were adjusted in connection with the Spin-Off to include an additional 7,406 RSUs.

3. Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of 62,651 RSUs that vested on January 1, 2026. These RSUs were originally granted on March 15, 2024 in the aggregate amount of 160,694 RSUs and were adjusted in connection with the Spin-Off to include an additional 18,172 RSUs, for which the remaining 62,650 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.

4. Reflects the number of shares withheld in satisfaction of applicable tax withholding obligations in connection with the net settlement of 53,329 performance-vesting RSUs that vested on January 1, 2026.

5. Includes (A) 285,965 shares of Class A Common Stock owned by the reporting person, (B) 110,971 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) 62,650 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.

6. Includes 187,952 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 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.

	/s/ Gregoire Maes, by attorney-in-fact Steven J. Feder	01/08/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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FAQ

What did CompoSecure (CMPO) disclose in this insider transaction filing?

The filing shows that Chief Operating Officer Gregoire Maes had shares of Class A common stock withheld by the company to cover tax obligations arising from vested restricted stock units (RSUs) on January 1, 2026.

How many CompoSecure shares were withheld for taxes and at what price?

The company withheld 41,709, 28,786 and 35,317 shares on January 1, 2026, and 30,515 shares on January 2, 2026, all at a price of $19.28 per share to satisfy tax withholding obligations tied to RSU vesting.

How many CompoSecure (CMPO) shares does Gregoire Maes beneficially own after these transactions?

Following the reported transactions, Gregoire Maes beneficially owns 645,653 shares of CompoSecure Class A common stock, including both shares owned outright and shares underlying unvested RSUs.

What RSU awards for the CompoSecure COO remain unvested after this Form 4?

Unvested awards include 110,971 RSUs vesting in three equal installments on February 26, 2028, February 26, 2030 and February 26, 2032, 62,650 time-vesting RSUs vesting on January 1, 2027, and 187,952 performance-vesting RSUs that may vest based on performance targets by January 1, 2027.

Were the CompoSecure COO transactions open-market sales?

No. The footnotes state that the reported share amounts represent shares withheld to satisfy tax withholding obligations in connection with the net settlement of RSUs that vested on January 1, 2026, rather than discretionary open-market sales.

Which CompoSecure RSU grants are referenced in this insider filing?

The filing references RSUs originally granted on March 16, 2022, March 8, 2023 and March 15, 2024, as well as performance-vesting RSUs, all of which were adjusted in connection with the spin-off of Resolute Holdings Management, Inc. and partially vested on January 1, 2026.