Sec Form 3 Filing - MADRONE CAPITAL PARTNERS, LLC @ StubHub Holdings, Inc. - 2025-09-16

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 MADRONE CAPITAL PARTNERS, LLC 2. Issuer Name and Ticker or Trading Symbol StubHub Holdings, Inc. [ STUB] 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) PO BOX #6476 3. Date of Earliest Transaction (MM/DD/YY) 09/16/2025 (Street) DENVER, CO80206 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 Class A Common Stock 21,111,915 I Held by Madrone Partners, L.P. ( 1 ) Class A Common Stock 53,279,250 I Held by Madrone SHV Partners, LLC ( 1 ) Class A Common Stock 1,388,890 I Held by Madrone Opportunity Fund, L.P. ( 1 ) Series L Preferred Stock 38,333 I Held by Madrone Partners, L.P. ( 1 ) Series L Preferred Stock 12,778 I Held by Madrone Opportunity Fund, L.P. ( 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 Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other MADRONE CAPITAL PARTNERS, LLC PO BOX #6476 DENVER, CO80206 X Madrone Partners, L.P. PO BOX #6476 DENVER, CO80206 X Madrone SHV Partners, LLC PO BOX #6476 DENVER, CO80206 X Madrone Opportunity Fund, L.P. PO BOX #6476 DENVER, CO80206 X McJunkin Jameson J PO BOX #6476 DENVER, CO80206 X Penner Gregory Boyd PO BOX #6476 DENVER, CO80206 X Signatures Madrone Capital Partners, LLC, By: Thomas Patterson, Manager, /s/ Thomas Patterson 09/16/2025 Signature of Reporting Person Date Madrone Partners L.P., By: Madrone Capital Partners, LLC, its general partner, By: Thomas Patterson, Manager, /s/ Thomas Patterson 09/16/2025 Signature of Reporting Person Date Madrone Opportunity Fund, L.P., By: Madrone Capital Partners, LLC, its general partner, By: Thomas Patterson, Manager, /s/ Thomas Patterson 09/16/2025 Signature of Reporting Person Date Madrone SHV Partners, LLC, By: Madrone Capital Partners, LLC, its manager, By: Thomas Patterson, Manager, /s/ Thomas Patterson 09/16/2025 Signature of Reporting Person Date /s/ Jameson McJunkin 09/16/2025 Signature of Reporting Person Date /s/ Gregory Penner 09/16/2025 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Madrone Capital Partners, LLC ("Madrone Capital") is the general partner of Madrone Partners L.P. ("Madrone Partners") and Madrone Opportunity Fund, L.P. ("Madrone Opportunity") and the manager of Madrone SHV Partners, LLC ("Madrone SHV"). Thomas Patterson, Jameson McJunkin and Gregory Penner are the managing members of Madrone Capital and each may be deemed to have shared voting and investment power with respect to the shares held by each of Madrone Partners, Madrone SHV and Madrone Opportunity and, as a result, may be deemed to have beneficial ownership of such shares. Each of Madrone Capital, Madrone Partners, Madrone Opportunity, Madrone SHV and Messrs. McJunkin and Penner disclaim beneficial ownership of the shares reported herein, except to the extent of his or its respective pecuniary interest therein. Mr. Patterson is a director of the Issuer and files separate Section 16 filings.

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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