Sec Form 3 Filing - Zhang Fen @ Columbus Acquisition Corp/Cayman Islands - 2025-01-22

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 Zhang Fen 2. Issuer Name and Ticker or Trading Symbol Columbus Acquisition Corp/Cayman Islands [ COLA] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director X __ 10% Owner X __ Officer (give title below) _____ Other (specify below) CEO (Last) (First) (Middle) C/O COLUMBUS ACQUISITION CORP, 14 PRUDENTIAL TOWER 3. Date of Earliest Transaction (MM/DD/YY) 01/22/2025 (Street) SINGAPORE, U0049712 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 Ordinary Share 234,290 ( 1 ) ( 2 ) I See Footnote ( 1 ) Ordinary Share 1,689,000 ( 1 ) ( 3 ) I See Footnote ( 1 )

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 A mount or Number of Shares Private Placement Rights $ 0 ( 4 ) ( 4 ) Ordinary Shares 234,290 I See Footnote ( 1 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Zhang Fen C/O COLUMBUS ACQUISITION CORP 14 PRUDENTIAL TOWER SINGAPORE, U0049712 X X CEO Signatures /s/ Fen Zhang 01/22/2025 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Hercules Capital Management VII Corp (the "Sponsor") is the record holder of the shares reported herein. Dr. Fen Zhang is the sole director the Sponsor. As such, Dr. Zhang may be deemed to have beneficial ownership of the ordinary shares held directly by the Sponsor. ( 2 )Representing 234,290 ordinary shares of Columbus Acquisition Corp (the "Issuer") underlying the private units ("Private Units") to be acquired by the Sponsor in a private placement simultaneously with the consummation of the IPO. Each Private Units consists of one ordinary share and one right. ( 3 )Representing 1,689,000 ordinary shares of the Issuer acquired by the Sponsor prior to the IPO. The amount of shares reported includes up to 225,000 ordinary shares subject to forfeiture to the extent that the over-allotment option by the underwriters is not exercised in full or in part. ( 4 )As described in the Right Agreement, between the Issuer and Continental Stock Transfer & Trust Company, LLC, and filed as Exhibit 4.4 to the Registration Statement, the private rights will automatically convert into 1/7 of one ordinary share upon the completion of the business combination.

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).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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