Item 2.02 Results of Operations and Financial Condition On November 3,2025, CompoSecure, Inc. (the “ Company”) issued a press release announcing its financial results for the quarter ended September 30, 2025, and provided an investor presentation to accompany the press release. Copies of the press release and the investor presentation are furnished herewith as Exhibits 99.1 and 99.2, respectively.*

Item 7.01 Regulation FD Disclosure The information included under Item 2.02 of this Current Report on Form 8-K is incorporated into this Item 7.01 by reference.*

Item 9.01 (d) Financial Statements and Exhibits Exhibit No. Exhibit Description 99.1 Press Release of CompoSecure, Inc. dated October 31, 2025 99.2 Investor Presentation of CompoSecure, Inc. dated October 31, 2025 ──────────────────────────────────────────────────────────────────────────────────────────────── 104 Cover Page Interactive Data File (embedded within the Inline XBRL document) * The information in Items 2.02 and 7.01 of this Form 8-K shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “ Exchange Act”) or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing. SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorized. CompoSecure, Inc. Date: November 3, 2025 By: /s/ Steven J. Feder Name: Steven J. Feder Title: General Counsel & Corporate Secretary