CompoSecure (CMPO) investors disclose Class A stakes up to 17.9% of stock

Rhea-AI Filing Summary

CompoSecure, Inc. investors filed Amendment No. 7 to their Schedule 13D reporting significant ownership of the company’s Class A Common Stock. Resolute Compo Holdings LLC reports beneficial ownership of 49,290,409 shares, or 17.0% of the class, based on 289,415,409 shares outstanding as of January 12, 2026. C 323 Holdings, LLC reports the same 49,290,409 shares as beneficially owned through its non-managing membership in Resolute Compo Holdings.

Tungsten 2024 LLC reports beneficial ownership of 50,170,372 shares, or 17.3%, including shares it holds directly and those held by Resolute Compo Holdings. Thomas R. Knott reports 50,415,127 shares, or 17.4%, including 244,755 shares underlying vested stock options exercisable within 60 days. John D. Cote reports 51,683,967 shares, or 17.9%, including options, shares held by Tungsten, shares held by Resolute Compo Holdings, and 1,500,000 shares held by Ridge Valley LLC. The amendment updates the ownership details in Items 3 and 5 via Appendix A.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 7)

CompoSecure, Inc.

(Name of Issuer)

Class A Common Stock, $0.0001 Par Value per share

(Title of Class of Securities)

20459V105

(CUSIP Number)

Thomas R. Knott
c/o Resolute Compo Holdings LLC, 445 Park Avenue, Suite 5B
New York, NY, 10022
(212) 256-8405

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

01/12/2026

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

SCHEDULE 13D

CUSIP No. 20459V105

1

Name of reporting person

Resolute Compo Holdings LLC

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

PF, OO

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 49,290,409.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 49,290,409.00

11

Aggregate amount beneficially owned by each reporting person

49,290,409.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

17.0 %

14

Type of Reporting Person (See Instructions)

OO

Comment for Type of Reporting Person:

Consists of 49,290,409 shares of Class A Common Stock, $0.0001 par value per share, issued by CompoSecure, Inc. (the "Class A Common Stock"), held of record by Resolute Compo Holdings LLC ("Resolute Compo Holdings"). Row (13) is based upon 289,415,409 shares of Class A Common Stock that were outstanding as of January 12, 2026.

SCHEDULE 13D

CUSIP No. 20459V105

1

Name of reporting person

C 323 Holdings, LLC

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

PF

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 49,290,409.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 49,290,409.00

11

Aggregate amount beneficially owned by each reporting person

49,290,409.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

17.0 %

14

Type of Reporting Person (See Instructions)

OO

Comment for Type of Reporting Person:

Consists of 49,290,409 shares of Class A Common Stock held of record by Resolute Compo Holdings. C 323 Holdings, LLC ("C 323 Holdings") is a non-managing member of Resolute Compo Holdings. Thomas R. Knott, an individual, is the sole and managing member of C 323 Holdings. Accordingly, Resolute Compo Holdings, C 323 Holdings and Mr. Knott may be deemed to share beneficial ownership of the shares of Class A Common Stock held of record by Resolute Compo Holdings. Row (13) is based upon 289,415,409 shares of Class A Common Stock that were outstanding as of January 12, 2026.

SCHEDULE 13D

CUSIP No. 20459V105

1

Name of reporting person

Tungsten 2024 LLC

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

PF

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 50,170,372.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 50,170,372.00

11

Aggregate amount beneficially owned by each reporting person

50,170,372.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

17.3 %

14

Type of Reporting Person (See Instructions)

OO

Comment for Type of Reporting Person:

Consists of (i) 879,963 shares of Class A Common Stock held of record by Tungsten 2024 LLC ("Tungsten"), and (ii) 49,290,409 shares of Class A Common Stock held of record by Resolute Compo Holdings. Tungsten is the managing member of Resolute Compo Holdings, John Cote is the manager of Tungsten and C 323 Holdings is a non-managing member of Resolute Compo Holdings. Tungsten, as managing member, has the right to vote and dispose of the shares of Class A Common Stock reported herein, subject to certain consultation rights held by C 323 Holdings. Mr. Knott is the sole and managing member of C 323 Holdings. Accordingly, Tungsten, Resolute Compo Holdings, Mr. John Cote, C 323 Holdings and Mr. Knott may each be deemed to share beneficial ownership of the shares of Class A Common Stock held of record by Resolute Compo Holdings, and Tungsten, Mr. John Cote and Mr. Knott may each be deemed to share beneficial ownership of the shares of Class A Common Stock held of record by Tungsten. Row (13) is based upon 289,415,409 shares of Class A Common Stock that were outstanding as of January 12, 2026.

SCHEDULE 13D

CUSIP No. 20459V105

1

Name of reporting person

Thomas R. Knott

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

OO

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 244,755.00
8	Shared Voting Power 50,170,372.00
9	Sole Dispositive Power 244,755.00
10	Shared Dispositive Power 50,170,372.00

11

Aggregate amount beneficially owned by each reporting person

50,415,127.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

17.4 %

14

Type of Reporting Person (See Instructions)

IN

Comment for Type of Reporting Person:

Consists of (i) 244,755 shares of Class A Common Stock that the Reporting Person has the right to acquire within 60 days through the exercise of vested stock options, (ii) 879,963 shares of Class A Common Stock held of record by Tungsten, and (iii) 49,290,409 shares of Class A Common Stock held of record by Resolute Compo Holdings. Tungsten is the managing member of Resolute Compo Holdings, John Cote is the manager of Tungsten and C 323 Holdings is a non-managing member of Resolute Compo Holdings. Tungsten, as managing member, has the right to vote and dispose of the shares of Class A Common Stock reported herein, subject to certain consultation rights held by C 323 Holdings. Mr. Knott is the sole and managing member of C 323 Holdings. Accordingly, Tungsten, Resolute Compo Holdings, Mr. John Cote, C 323 Holdings and Mr. Knott may each be deemed to share beneficial ownership of the shares of Class A Common Stock held of record by Resolute Compo Holdings, and Tungsten, Mr. John Cote and Mr. Knott may each be deemed to share beneficial ownership of the shares of Class A Common Stock held of record by Tungsten. Row (13) is based upon 289,415,409 shares of Class A Common Stock that were outstanding as of January 12, 2026.

SCHEDULE 13D

CUSIP No. 20459V105

1

Name of reporting person

John D. Cote

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

OO

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 1,513,595.00
8	Shared Voting Power 50,170,372.00
9	Sole Dispositive Power 1,513,595.00
10	Shared Dispositive Power 50,170,372.00

11

Aggregate amount beneficially owned by each reporting person

51,683,967.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

17.9 %

14

Type of Reporting Person (See Instructions)

IN

Comment for Type of Reporting Person:

Consists of (i) 13,595 shares of Class A Common Stock that the Reporting Person has the right to acquire within 60 days through the exercise of vested stock options, (ii) 879,963 shares of Class A Common Stock held of record by Tungsten, (iii) 49,290,409 shares of Class A Common Stock held of record by Resolute Compo Holdings and (iv) 1,500,000 shares of Class A Common Stock held by Ridge Valley LLC. Tungsten is the managing member of Resolute Compo Holdings, John Cote is the manager of Tungsten and C 323 Holdings is a non-managing member of Resolute Compo Holdings. Tungsten, as managing member, has the right to vote and dispose of the shares of Class A Common Stock reported herein, subject to certain consultation rights held by C 323 Holdings. Mr. Knott is the sole and managing member of C 323 Holdings. Accordingly, Tungsten, Resolute Compo Holdings, Mr. John Cote, C 323 Holdings and Mr. Knott may each be deemed to share beneficial ownership of the shares of Class A Common Stock held of record by Resolute Compo Holdings, and Tungsten, Mr. John Cote and Mr. Knott may each be deemed to share beneficial ownership of the shares of Class A Common Stock held of record by Tungsten. Row (13) is based upon 289,415,409 shares of Class A Common Stock that were outstanding as of January 12, 2026.

SCHEDULE 13D

Item 1.	Security and Issuer
(a)	Title of Class of Securities: Class A Common Stock, $0.0001 Par Value per share
(b)	Name of Issuer: CompoSecure, Inc.
(c)	Address of Issuer's Principal Executive Offices: 309 Pierce Street, Somerset, NEW JERSEY , 08873.
Item 1 Comment: This Amendment No. 7 to Schedule 13D (this "Amendment No. 7") relates to the Class A Common Stock, par value $0.0001 per share (the "Class A Common Stock") of CompoSecure, Inc., a Delaware corporation (the "Issuer") and amends the initial statement on Schedule 13D filed by the Reporting Persons on September 19, 2024 (the "Initial Statement" and, as amended by those certain Amendment No. 1 filed on November 29, 2024, Amendment No. 2 filed on February 14, 2025, Amendment No. 3 filed on August 22, 2025, Amendment No. 4 filed on August 27, 2025, Amendment No. 5 filed on September 10, 2025, Amendment No. 6 filed on November 4, 2025 and this Amendment No. 7, the "Schedule 13D"). Capitalized terms used but not defined herein shall have the meanings ascribed to them in the Initial Statement.
Item 2.	Identity and Background
(a)	See Row (1) of each Reporting Person's cover page.
(b)	The principal business office of the Reporting Persons is 445 Park Avenue, Suite 5B, New York, NY 10022.
(c)	No change.
(d)	No change.
(e)	No change.
(f)	No change.
Item 3.	Source and Amount of Funds or Other Consideration
	Item 3 is hereby amended and supplemented as specified in Appendix A.
Item 5.	Interest in Securities of the Issuer
(a)	Item 5(a) is hereby amended and restated to read in its entirety as found in Appendix A.
(b)	Item 5(b) is hereby amended and restated to read in its entirety as found in Appendix A.
(c)	None.
(d)	None.
(e)	Not applicable.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Resolute Compo Holdings LLC

Signature:	/s/ John D. Cote
Name/Title:	John D. Cote, Manager of Tungsten 2024 LLC, its managing member
Date:	01/14/2026

C 323 Holdings, LLC

Signature:	/s/ Thomas R. Knott
Name/Title:	Thomas R. Knott, Manager
Date:	01/14/2026

Tungsten 2024 LLC

Signature:	/s/ John D. Cote
Name/Title:	John D. Cote, Manager
Date:	01/14/2026

Thomas R. Knott

Signature:	/s/ Thomas R. Knott
Name/Title:	Thomas R. Knott
Date:	01/14/2026

John D. Cote

Signature:	/s/ John D. Cote
Name/Title:	John D. Cote
Date:	01/14/2026

FAQ

What does CompoSecure (CMPO) Amendment No. 7 to Schedule 13D disclose?

It reports updated beneficial ownership of CompoSecure’s Class A Common Stock by several related reporting persons, including Resolute Compo Holdings LLC, C 323 Holdings, LLC, Tungsten 2024 LLC, Thomas R. Knott, and John D. Cote, and amends Items 3 and 5 as set out in Appendix A.

How many CompoSecure (CMPO) shares does Resolute Compo Holdings LLC report owning?

Resolute Compo Holdings LLC reports beneficial ownership of 49,290,409 shares of CompoSecure Class A Common Stock, representing 17.0% of the class, based on 289,415,409 shares outstanding as of January 12, 2026.

What stake in CompoSecure (CMPO) does Tungsten 2024 LLC report?

Tungsten 2024 LLC reports 50,170,372 shares of CompoSecure Class A Common Stock, or 17.3% of the class, consisting of 879,963 shares it holds directly and 49,290,409 shares held by Resolute Compo Holdings.

How much CompoSecure (CMPO) stock does Thomas R. Knott report beneficially owning?

Thomas R. Knott reports 50,415,127 shares, or 17.4% of CompoSecure’s Class A Common Stock. This includes 244,755 shares underlying vested stock options exercisable within 60 days, 879,963 shares held by Tungsten 2024 LLC, and 49,290,409 shares held by Resolute Compo Holdings.

What is John D. Cote’s reported ownership stake in CompoSecure (CMPO)?

John D. Cote reports 51,683,967 shares, or 17.9% of CompoSecure’s Class A Common Stock, including 13,595 option shares exercisable within 60 days, 879,963 shares held by Tungsten 2024 LLC, 49,290,409 shares held by Resolute Compo Holdings, and 1,500,000 shares held by Ridge Valley LLC.

How many CompoSecure (CMPO) shares were outstanding for these percentage calculations?

All reported ownership percentages are based on 289,415,409 shares of CompoSecure Class A Common Stock outstanding as of January 12, 2026.

How are the reporting persons in this CompoSecure (CMPO) filing related?

The filing explains that Tungsten 2024 LLC is the managing member of Resolute Compo Holdings, C 323 Holdings, LLC is a non-managing member of Resolute Compo Holdings, John D. Cote is the manager of Tungsten, and Thomas R. Knott is the sole and managing member of C 323 Holdings. Based on these roles, they may each be deemed to share beneficial ownership of shares held by Resolute Compo Holdings and, for some parties, shares held by Tungsten.