WestCap Management, LLC - 17 Mar 2026 Form 4 Insider Report for StubHub Holdings, Inc. (STUB)

Reporting relationship: 10%+ Owner
Issuer ticker: STUB
Reported as of: 17 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 19 Mar 2026, 12:31:26 UTC
Prior SEC filing: 21 Jan 2026
Next SEC filing: 25 Mar 2026
Source filing: View source filing
Reporting owner signature: WestCap Management, LLC, By: Laurence A. Tosi, its Managing Member /s/ Laurence A. Tosi

Key filing fact

WestCap Management, LLC filed Form 4 for StubHub Holdings, Inc. (STUB) on 19 Mar 2026.

Key facts

This page summarizes WestCap Management, LLC's Form 4 filing for StubHub Holdings, Inc. (STUB).
2 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 19 Mar 2026, 12:31.

Change

Previous filing in this sequence was filed on 21 Jan 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (4)

CIK 0001838470 Primary reporting owner

WestCap Management, LLC

Relationship: 10%+ Owner
Address: 590 PACIFIC AVENUE, SAN FRANCISCO
Signature: WestCap Management, LLC, By: Laurence A. Tosi, its Managing Member /s/ Laurence A. Tosi
Signature date: 19 Mar 2026

CIK 0001307496

Tosi Laurence A

Relationship: 10%+ Owner
Address: 590 PACIFIC AVE., SAN FRANCISCO
Signature: Laurence A. Tosi /s/ Laurence A. Tosi
Signature date: 19 Mar 2026

CIK 0002084496

WestCap Stub Holdco 2024, LLC

Relationship: 10%+ Owner
Address: 590 PACIFIC AVENUE, SAN FRANCISCO
Signature: WestCap Stub Holdco 2024, LLC, By: WestCap Management, LLC, its Manager, By: Laurence A. Tosi, its Managing Member /s/ Laurence A. Tosi
Signature date: 19 Mar 2026

CIK 0002084123

WestCap StubHub Opportunity Fund Preferred, LLC

Relationship: 10%+ Owner
Address: 590 PACIFIC AVE, SAN FRANCISCO
Signature: WestCap StubHub Opportunity Fund Preferred, LLC, By: WestCap Management, LLC, its Manager, By: Laurence A. Tosi, its Managing Member /s/ Laurence A. Tosi
Signature date: 19 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

STUB transaction

Class A Common Stock

Conversion of derivative security

Transaction value
Shares: +6,256,893
Change %: +20%
Price: $23.50^*
Shares after: 37,991,583
Date: 17 Mar 2026
Ownership: See footnotes
Footnotes: F1, F3

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

STUB transaction Derivative

Series O Preferred Stock, par value $0.001 per share

Conversion of derivative security

Transaction value
Shares: -133,670
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 17 Mar 2026
Ownership: See footnotes
Underlying class: Class A Common Stock
Underlying amount: 6,256,893
Exercise price: $23.50
Footnotes: F2, F3, F4, F5

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 5 footnotes

Footnote F1

The securities reported on this line are held directly by WestCap Stub Holdco 2024, LLC ("WestCap Stub") and WestCap StubHub Opportunity Fund Preferred, LLC ("WestCap StubHub").

Footnote F2

The securities reported on this line were held directly by WestCap StubHub.

Footnote F3

WestCap Management, LLC ("WestCap") is the managing member of WestCap Stub and WestCap StubHub. Laurence A. Tosi may be deemed to hold voting and investment control over the shares held by WestCap Stub and WestCap StubHub. Each Reporting Person expressly disclaims beneficial ownership of the securities reported herein except to the extent of its or his pecuniary interest therein, if any.

Footnote F4

The Series O Preferred Stock automatically converted into Class A Common Stock, par value $0.001 per share ("Class A Common Stock") on March 17, 2026, the date that is 180 days after the closing on September 18, 2025 of the issuer's initial public offering.

Footnote F5

The Series O Preferred Stock had no stated maturity.