Sec Form 4 Filing - Brauchli Marcus @ Blue Ocean Acquisition Corp - 2024-12-05

FORM 4 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 Brauchli Marcus 2. Issuer Name and Ticker or Trading Symbol Blue Ocean Acquisition Corp [ BOCN] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director X __ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chairman (Last) (First) (Middle) 2 WISCONSIN CIRCLE, 7TH FLOOR 3. Date of Earliest Transaction (MM/DD/YY) 12/05/2024 (Street) CHEVY CHASE, MD20815 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 Class A Ordinary Shares 12/05/2024 C 1 A 4,353,750 I See Footnote ( 2 ) Class A Ordinary Shares 12/05/2024 D 4,353,750 D 0 I See Footnote ( 2 )

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 Class B Ordinary Shares ( 1 ) 12/05/2024 C 1 ( 1 ) ( 1 ) Class A Ordinary Shares 1 $ 0 0 I See Footnote ( 2 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Brauchli Marcus 2 WISCONSIN CIRCLE 7TH FLOOR CHEVY CHASE, MD20815 X X Chairman Signatures /s/ Stuart Karle, Attorney-in-Fact for Marcus Brauchli 12/09/2024 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Pursuant to the merger agreement by and among the Issuer, TNL Mediagene, and TNLMG, effective December 5, 2024 (the "Effective Time"), TNLMG merged with and into the Issuer, with the Issuer surviving as a wholly owned subsidiary of TNL Mediagene (such merger, the "Merger"). Immediately prior to the Effective Time, each Class B ordinary share outstanding immediately prior to the Effective Time automatically converted into one Class A ordinary share and, after giving effect to such automatic conversion, at the Effective Time and as a result of the Merger, each Class A ordinary share outstanding immediately prior to the Effective Time automatically converted into the right to receive one ordinary share of TNL Mediagene. ( 2 )These securities are held directly by Blue Ocean Sponsor LLC ("Sponsor"). The Reporting Person is a manager of Sponsor. As such, the Reporting Person may be deemed to have beneficial ownership of the securities held directly by Sponsor. The Reporting Person disclaims beneficial ownership over any securities owned by Sponsor in which he does not have any pecuniary interest.

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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