Capital Research Global Investors (CMPO) reports 7.3% CompoSecure ownership

Rhea-AI Filing Summary

Capital Research Global Investors filed a Schedule 13G reporting a significant passive stake in CompoSecure, Inc.. It reports beneficial ownership of 9,213,355 shares of CompoSecure common stock, representing 7.3% of the 126,411,164 shares believed to be outstanding as of 12/31/2025.

The filing states that Capital Research Global Investors has sole voting and sole dispositive power over all 9,213,355 shares, with no shared voting or dispositive power. The position is certified as being held in the ordinary course of business and not for the purpose of changing or influencing control of CompoSecure.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

CompoSecure, Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

20459V105

(CUSIP Number)

12/31/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. 20459V105

1

Names of Reporting Persons

Capital Research Global Investors

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 9,213,355.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 9,213,355.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

9,213,355.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

7.3 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: CompoSecure, Inc.
(b)	Address of issuer's principal executive offices: 309 Pierce Street, Somerset, NJ 08873
Item 2.
(a)	Name of person filing: Capital Research Global Investors
(b)	Address or principal business office or, if none, residence: 333 South Hope Street, 55th Fl, Los Angeles, CA 90071
(c)	Citizenship: N/A
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 20459V105
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 9,213,355 ** **Capital Research Global Investors ("CRGI") is a division of Capital Research and Management Company ("CRMC"), as well as its investment management subsidiaries and affiliates Capital Bank and Trust Company, Capital International, Inc., Capital International Limited, Capital International Sarl, Capital International K.K., Capital Group Private Client Services, Inc., and Capital Group Investment Management Private Limited (together with CRMC, the "investment management entities"). CRGI's divisions of each of the investment management entities collectively provide investment management services under the name "Capital Research Global Investors." CRGI is deemed to be the beneficial owner of 9,213,355 shares or 7.3% of the 126,411,164 shares believed to be outstanding.
(b)	Percent of class: 7.3 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 9,213,355
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 9,213,355
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. SMALLCAP World Fund, Inc.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

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.

Capital Research Global Investors

Signature:	Jae Won Chung
Name/Title:	Vice President and Senior Counsel II, Capital Research and Management Company
Date:	02/05/2026

FAQ

What ownership stake in CompoSecure (CMPO) does Capital Research Global Investors report?

Capital Research Global Investors reports beneficial ownership of 9,213,355 CompoSecure common shares, representing 7.3% of the 126,411,164 shares believed outstanding. This makes it a significant institutional holder, with the position disclosed as of December 31, 2025 in a Schedule 13G filing.

Does Capital Research Global Investors have voting control over its CompoSecure (CMPO) shares?

The filing states Capital Research Global Investors has sole voting power over 9,213,355 CompoSecure shares and no shared voting power. It also reports sole dispositive power over the same number of shares, meaning it alone can decide how these shares are voted and disposed.

Is Capital Research Global Investors’ stake in CompoSecure (CMPO) considered passive or activist?

The stake is certified as passive. Capital Research Global Investors states the securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of CompoSecure, consistent with a Schedule 13G passive ownership filing.

How many CompoSecure (CMPO) shares are believed to be outstanding in this filing?

The filing notes that the 7.3% ownership is based on 126,411,164 CompoSecure common shares believed to be outstanding. Using this base, Capital Research Global Investors’ 9,213,355 shares translate into the reported 7.3% percentage of the company’s common stock.

Who signed the Schedule 13G for Capital Research Global Investors regarding CompoSecure (CMPO)?

The Schedule 13G was signed by Jae Won Chung, identified as Vice President and Senior Counsel II of Capital Research and Management Company. The signature certifies, after reasonable inquiry, that the information in the statement is true, complete, and correct as of February 5, 2026.

Which related fund is mentioned in connection with Capital Research’s CompoSecure (CMPO) holdings?

The filing lists SMALLCAP World Fund, Inc. in the section regarding ownership on behalf of another person. This indicates that another person or entity may have the right to receive dividends or sale proceeds related to more than 5% of the CompoSecure common stock class.