Sec Form 3 Filing - JCF IV JCAP Holding L.P. @ Jefferson Capital, Inc. / DE - 2025-08-22

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 JCF IV JCAP Holding L.P. 2. Issuer Name and Ticker or Trading Symbol Jefferson Capital, Inc. / DE [ JCAP] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O J.C. FLOWERS & CO. LLC, 1301 AVENUE OF THE AMERICAS, 16TH FLOOR 3. Date of Earliest Transaction (MM/DD/YY) 08/22/2025 (Street) NEW YORK, NY10019 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ 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 Common Stock 43,721,808 I See Footnotes ( 1 ) ( 2 ) ( 3 )

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

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other JCF IV JCAP Holding L.P. C/O J.C. FLOWERS & CO. LLC 1301 AVENUE OF THE AMERICAS, 16TH FLOOR NEW YORK, NY10019 X JCF IV JCAP Holding GP LLC C/O J.C. FLOWERS & CO. LLC 1301 AVENUE OF THE AMERICAS, 16TH FLOOR NEW YORK, NY10019 X Signatures JCF IV JCAP HOLDING L.P., By: JCF IV JCAP Holding GP LLC, its general partner, By: /s/ Sally Rocker, Managing Director, Chief Operating Officer & General Counsel 09/02/2025 Signature of Reporting Person Date JCF IV JCAP Holding GP LLC, By: /s/ Sally Rocker, Managing Director, Chief Operating Officer & General Counsel 09/02/2025 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Represents securities held directly by JCF IV JCAP Holding L.P. On August 22, 2025, in connection with an internal reorganization, J.C. Flowers IV L.P. and JCF IV Coinvest JCAP L.P. contributed 13,492,856 and 30,228,952 shares of common stock of the Issuer, respectively, for no consideration, to JCF IV JCAP Holding L.P. The shares held by JCF IV JCAP Holding L.P. are subject to a lock-up agreement with the underwriters for the Issuer's recent initial public offering. ( 2 )JCF IV JCAP Holding GP LLC is the general partner of JCF IV JCAP Holding L.P. The sole managing member of JCF IV JCAP Holding GP LLC is JCF Associates IV Ltd. J. Christopher Flowers controls JCF Associates IV Ltd. and thus may be deemed to control each entity directly or indirectly controlled by JCF Associates IV Ltd., including JCF IV JCAP Holding L.P. ( 3 )The Reporting Persons disclaim beneficial ownership of the securities reported on this Form 3, except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of these securities for purposes of Section 16 of the Securities Exchange Act of 1934 or for any other purpose.

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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