StubHub (STUB) director Mark Streams sells 232,567 shares under 10b5-1 plan

Rhea-AI Filing Summary

StubHub Holdings, Inc. director and officer Mark Streams reported an open-market sale of 232,567 shares of Class A Common Stock at a weighted average price of $9.0363 per share. The sale was executed pursuant to a pre-arranged Rule 10b5-1 trading plan adopted on December 10, 2025, indicating it was scheduled in advance. Following this transaction, Streams directly holds 1,114,001 StubHub shares.

Insights

Insider trading and governance analyst

Pre-planned sale of 232,567 StubHub shares leaves over 1.1M held.

Director and officer Mark Streams sold 232,567 shares of StubHub Holdings Class A Common Stock in an open-market transaction at a weighted average price of $9.0363 per share. This is a discretionary sale, not an option exercise or tax withholding.

The filing notes the trades were made under a Rule 10b5-1 trading plan adopted on December 10, 2025. Such plans are set up in advance and executed automatically, which generally makes the timing of the sale less informative about Streams’ current view of the stock.

After the transaction, Streams directly owns 1,114,001 shares, so the sale represents only a portion of his position. There are no remaining derivative positions disclosed in this filing, and no earnings or business updates are included; subsequent company filings will provide broader financial context.

Insider Trade Summary 10b5-1

Net Seller: 232,567 shares ($2,101,545)

Net Sell 1 txn

Insider Streams Mark

Role See Remarks

Sold 232,567 shs ($2.10M)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	232,567	$9.0363	$2.10M

Holdings After Transaction: Class A Common Stock — 1,114,001 shares (Direct, null)

Footnotes (1)

1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on December 10, 2025. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.00 to $9.16. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Key Figures

Shares sold: 232,567 shares Weighted average sale price: $9.0363 per share Price range of sales: $9.00 to $9.16 per share +2 more

5 metrics

Shares sold 232,567 shares Open-market sale of Class A Common Stock

Weighted average sale price $9.0363 per share Price reported for sold StubHub shares

Price range of sales $9.00 to $9.16 per share Range for multiple sale transactions

Shares held after transaction 1,114,001 shares Direct ownership following sale

Rule 10b5-1 plan adoption date December 10, 2025 Date trading plan was adopted

Key Terms

Rule 10b5-1 trading plan, weighted average price, open-market sale, Class A Common Stock

4 terms

Rule 10b5-1 trading plan regulatory

"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on December 10, 2025."

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted average price financial

"The price reported in Column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

open-market sale financial

"transaction_action: open-market sale"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Class A Common Stock financial

"security_title: Class A Common Stock"

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

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
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Streams Mark

(Last) (First) (Middle)

C/O STUBHUB HOLDINGS, INC.

175 GREENWICH STREET, 59TH FLOOR

(Street)

NEW YORK NEW YORK 10007

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
StubHub Holdings, Inc. [ STUB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	See Remarks

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/14/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	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	05/14/2026		S		232,567(1)	D	$9.0363(2)	1,114,001	D

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 (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	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 (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (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: 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

Explanation of Responses:

1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on December 10, 2025.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.00 to $9.16. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Remarks:

Executive Vice Chairman & Chief Legal Officer

	/s/ Mark Streams	05/15/2026
	** Signature of Reporting Person	Date
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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Mark Streams report for StubHub (STUB)?

Mark Streams reported selling 232,567 StubHub shares. He executed an open-market sale of Class A Common Stock at a weighted average price of $9.0363 per share, as disclosed in a Form 4 insider trading report for StubHub Holdings, Inc.

Was Mark Streams’ StubHub share sale part of a Rule 10b5-1 plan?

Yes, the sale was executed under a Rule 10b5-1 plan. The Form 4 states the transactions were carried out pursuant to a pre-arranged trading plan adopted on December 10, 2025, indicating the trades were scheduled in advance rather than timed discretionarily.

How many StubHub (STUB) shares does Mark Streams hold after this sale?

Mark Streams holds 1,114,001 StubHub shares after the sale. The Form 4 shows this as his direct ownership of Class A Common Stock following the open-market transaction in which 232,567 shares were sold.

At what prices were Mark Streams’ StubHub shares sold?

The reported weighted average sale price was $9.0363 per share. A footnote explains the shares were sold in multiple transactions at prices ranging from $9.00 to $9.16, resulting in the disclosed weighted average figure.

Does the Form 4 show any StubHub derivative securities for Mark Streams?

No derivative securities are listed for Mark Streams in this filing. The derivative summary is empty, indicating there were no reported option exercises, conversions, or other derivative transactions alongside the disclosed open-market share sale.