CMPO Schedule 13D/A: Resolute/Tungsten Group Reports 44–46% Ownership

Rhea-AI Filing Summary

Amendment No. 3 to a Schedule 13D filed for CompoSecure, Inc. (CMPO) updates beneficial ownership amounts solely due to a change in the number of Class A shares outstanding. The reporting persons—Resolute Compo Holdings LLC, Tungsten 2024 LLC, Thomas R. Knott and John D. Cote—collectively report shared voting and dispositive power over significant stakes. Resolute Compo Holdings holds 49,290,409 Class A shares (44.3% of the class). Tungsten 2024 LLC and Thomas R. Knott report beneficial ownership of 49,937,302 shares (44.8%). John D. Cote reports 51,437,302 shares (46.2%), which includes 1,500,000 shares held by Ridge Valley LLC. The amendment states it was filed only because of a change in the aggregate shares outstanding and not due to any transaction by the reporting persons.

Positive

• Transparent update of beneficial ownership percentages explicitly tied to a change in outstanding shares, not new transactions
• Detailed ownership breakdown across entities and individuals clarifies control relationships (Tungsten, Resolute Compo Holdings, Knott, Cote)

Negative

• High concentration of Class A voting/dispositive power held by related parties (reported between 44.3% and 46.2%) which may raise governance concentration concerns

Insights

Securities Analyst

TL;DR: Reporting group holds a near-controlling combined stake (44–46%) and amended ownership percentages reflect updated share count only.

The filing clarifies beneficial ownership across related entities and individuals, attributing shared voting and dispositive power to Tungsten 2024 LLC, Resolute Compo Holdings LLC, Thomas R. Knott and John D. Cote. Key metrics are the reported share counts and percentages—49.29M (44.3%), 49.94M (44.8%) and 51.44M (46.2%)—calculated using 111,388,134 Class A shares outstanding as of August 22, 2025. No new transactions, agreements or changes to source of funds are disclosed within this amendment; it solely updates ownership percentages based on the changed share base.

Corporate Governance Expert

TL;DR: The amendment is administrative: ownership allocations among related parties are restated without any new actions.

The statement highlights control relationships—Tungsten as managing member of Resolute Compo Holdings and consultation rights for Mr. Knott—which explain why multiple parties may be deemed to share beneficial ownership. The filing does not report litigation, changes in business purpose, or new source-of-funds events. For governance review, the important disclosure is the concentration of economic and voting power among connected parties and the precise share counts used to compute percentages.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 3)

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)

08/21/2025

(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)

44.3 %

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 111,388,134 shares of Class A Common Stock that were outstanding as of August 22, 2025.

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 49,937,302.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 49,937,302.00

11

Aggregate amount beneficially owned by each reporting person

49,937,302.00

12

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

13

Percent of class represented by amount in Row (11)

44.8 %

14

Type of Reporting Person (See Instructions)

OO

Comment for Type of Reporting Person:

Consists of (i) 646,893 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 Thomas Knott is a 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 Mr. Knott. Accordingly, Tungsten, Resolute Holdings, 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 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 111,388,134 shares of Class A Common Stock that were outstanding as of August 22, 2025.

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 0.00
8	Shared Voting Power 49,937,302.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 49,937,302.00

11

Aggregate amount beneficially owned by each reporting person

49,937,302.00

12

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

13

Percent of class represented by amount in Row (11)

44.8 %

14

Type of Reporting Person (See Instructions)

IN

Comment for Type of Reporting Person:

Consists of (i) 646,893 shares of Class A Common Stock held of record by 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 Thomas Knott is a 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 Mr. Knott. Accordingly, Tungsten, Resolute Holdings, 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 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 111,388,134 shares of Class A Common Stock that were outstanding as of August 22, 2025.

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 1,500,000.00
8	Shared Voting Power 49,937,302.00
9	Sole Dispositive Power 1,500,000.00
10	Shared Dispositive Power 49,937,302.00

11

Aggregate amount beneficially owned by each reporting person

51,437,302.00

12

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

13

Percent of class represented by amount in Row (11)

46.2 %

14

Type of Reporting Person (See Instructions)

IN

Comment for Type of Reporting Person:

Consists of (i) 646,893 shares of Class A Common Stock held of record by Tungsten, (ii) 49,290,409 shares of Class A Common Stock held of record by Resolute Compo Holdings and (iii) 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 Thomas Knott is a 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 Mr. Knott. Accordingly, Tungsten, Resolute Holdings, 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 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 111,388,134 shares of Class A Common Stock that were outstanding as of August 22, 2025.

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. 3 to Schedule 13D (this "Amendment No. 3") 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 that certain Amendment No. 1 filed on November 29, 2024, Amendment No. 2 filed on February 14, 2025 and this Amendment No. 3, the "Schedule 13D"). Capitalized terms used but not defined herein shall have the meanings ascribed to them in the Initial Statement. This Amendment No. 3 is being filed to amend the Schedule 13D solely due to a change in the aggregate number of Class A Common Stock outstanding and not due to any transaction by the Reporting Persons.
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:	08/22/2025

Tungsten 2024 LLC

Signature:	/s/ John D. Cote
Name/Title:	Manager
Date:	08/22/2025

Thomas R. Knott

Signature:	/s/ Thomas R. Knott
Name/Title:	Thomas R. Knott
Date:	08/22/2025

John D. Cote

Signature:	/s/ John D. Cote
Name/Title:	John D. Cote
Date:	08/22/2025

FAQ

What stake does the reporting group hold in CompoSecure (CMPO)?

The filings show shared beneficial ownership reported as 49,290,409 shares (44.3%) for Resolute Compo Holdings, 49,937,302 shares (44.8%) for Tungsten 2024 LLC/Thomas R. Knott, and 51,437,302 shares (46.2%) for John D. Cote (including Ridge Valley LLC).

Why was Amendment No. 3 filed for the Schedule 13D?

The amendment states it was filed solely due to a change in the aggregate number of Class A Common Stock outstanding and not because of any transaction by the reporting persons.

How many Class A shares were outstanding for percentage calculations?

Percentages are based on 111,388,134 shares of Class A Common Stock outstanding as of August 22, 2025.

Who has voting and dispositive power over the reported shares?

Tungsten 2024 LLC, as managing member of Resolute Compo Holdings, has the right to vote and dispose of the shares reported for Resolute Compo Holdings, subject to consultation rights of Mr. Knott; related parties may be deemed to share beneficial ownership.

Did the filing report any change in source of funds or legal proceedings?

The cover pages list source of funds as PF and OO where indicated and explicitly state no change to Items 2(c)-(f) and no disclosure of legal proceedings in this amendment.