Sec Form 3 Filing - Lowe Adam Joseph @ CompoSecure, Inc. - 2021-12-27

FORM 3 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

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, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Lowe Adam Joseph 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 Innovation Officer (Last) (First) (Middle) C/O COMPOSECURE, INC., 309 PIERCE STREET 3. Date of Earliest Transaction (MM/DD/YY) 12/27/2021 (Street) SOMERSET, NJ08873 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 7. Title and Amount of Underlying Securities (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 of Derivative Security: 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 Stock Option (Right to Buy) $ 0.01( 2 ) ( 1 ) 05/10/2025 Class A Common Stock, par value $0.0001 227,845 D Stock Option (Right to Buy) $ 4.31( 2 ) ( 1 ) 10/30/2028 Class A Common Stock, par value $0.0001 338,923 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Lowe Adam Joseph C/O COMPOSECURE, INC. 309 PIERCE STREET SOMERSET, NJ08873 Chief Innovation Officer Signatures /s/ Adam Lowe, by attorney-in-fact Steven J. Feder 12/29/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The stock option vests 25% on the first anniversary of the grant date, and the remaining portion vests in increments of 2.08% beginning on the date that was one month after the grant date and on such date every month thereafter, through the fourth anniversary of the grant date. ( 2 )The exercise price of the stock option shall be equal to the quotient of (a) the exercise price per Class C Unit of each such stock option immediately prior to the Merger divided by (b) the Equity Award Exchange Ratio, rounding the resulting exercise price up to the nearest whole cent, all as set forth and defined in that certain Agreement and Plan of Merger (the "Merger Agreement"), dated as of April 19, 2021, by and among Roman DBDR Tech Acquisition Corp., a Delaware corporation ("Roman DBDR"), CompoSecure Holdings, L.L.C., a Delaware limited liability company, Roman Parent Merger Sub, LLC, a Delaware limited liability company and wholly-owned subsidiary of Roman DBDR and LLR Equity Partners IV, L.P., a Delaware limited partnership, as subsequently amended by that certain First Amendment to the Merger Agreement, dated as of May 25, 2021.

Remarks: Exhibit 24 - Power of Attorney

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).

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