Mark Streams plans $2.6M StubHub share sale

Mark Streams filed a notice to sell up to 334,746 shares of Class A Common Stock of STUB through J.P.

Rhea-AI Filing Summary

Mark Streams filed a notice to sell up to 334,746 shares of Class A Common Stock of STUB through J.P. Morgan Securities LLC on the NYSE. The filing lists an aggregate market value of approximately $2,647,841 for these shares and notes 357,339,966 Class A shares outstanding. The shares to be sold were acquired from the issuer through equity compensation, including a stock option exercise dated 12/04/2020 for 328,777 shares and several RSU vests scheduled in late 2025 and early 2026. The filing also reports prior sales over the past three months, including 18,167 shares for $236,751 on 06/30/2026 and 28,531 shares for $371,402 on 07/06/2026.

Key Figures

Planned shares to be sold: 334,746 shares Aggregate market value of planned sale: $2,647,841 Shares outstanding: 357,339,966 shares +5 more

8 metrics

Planned shares to be sold 334,746 shares Class A Common Stock covered by the Form 144 notice

Aggregate market value of planned sale $2,647,841 Value associated with 334,746 Class A shares to be sold

Shares outstanding 357,339,966 shares Outstanding Class A Common shares referenced in the notice

Stock option exercise shares 328,777 shares Shares underlying a stock option exercise dated 12/04/2020

RSU vest 1 1,991 shares RSU vest scheduled on 12/16/2025

RSU vest 2 1,989 shares RSU vest scheduled on 01/13/2026

RSU vest 3 1,989 shares RSU vest scheduled on 02/10/2026

Sale on 07/06/2026 28,531 shares for $371,402 One of the sales disclosed for the past three months

Key Terms

Form 144, Stock Option Exercise, RSU Vest, aggregate market value

4 terms

Form 144 regulatory

"144: Securities Information Class A Common"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Stock Option Exercise financial

"Class A Common | 12/04/2020 | Stock Option Exercise"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

RSU Vest financial

"Class A Common | 12/16/2025 | RSU Vest"

aggregate market value financial

"334746 | 2647841 | 357339966"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many STUB Class A shares does Mark Streams plan to sell under this Form 144?

Mark Streams plans to sell up to 334,746 shares of STUB Class A Common Stock. The filing associates these planned sales with an aggregate market value of about $2,647,841, and identifies J.P. Morgan Securities LLC as the broker handling the transactions on the NYSE.

What is the aggregate market value of the STUB shares covered by Mark Streams' Form 144?

The Form 144 lists an aggregate market value of approximately $2,647,841 for the shares to be sold. This value corresponds to the planned sale of 334,746 STUB Class A shares through J.P. Morgan Securities LLC on the NYSE, as disclosed in the filing.

How many STUB Class A shares were outstanding according to Mark Streams' Form 144?

The Form 144 reports that 357,339,966 STUB Class A Common shares were outstanding. This outstanding share count provides context for the relative size of the planned sale of 334,746 shares disclosed in the same filing.

What recent sales of STUB stock by Mark Streams are disclosed in the Form 144?

Recent sales include 18,167 shares for $236,751 on 06/30/2026 and 28,531 shares for $371,402 on 07/06/2026. Additional smaller trades, such as 300 shares for $3,900, are also listed for the past three months.

How did Mark Streams acquire the STUB shares being sold under this Form 144?

The shares were acquired from the issuer through equity awards, including a stock option exercise dated 12/04/2020 for 328,777 shares. Further shares came from RSU vests of 1,991, 1,989, and 1,989 shares scheduled in December 2025 and early 2026.

Which broker is handling Mark Streams' planned sale of STUB shares?

The filing identifies J.P. Morgan Securities LLC, located at 270 Park Avenue, New York, as the broker. This broker is listed in connection with the planned sale of 334,746 STUB Class A shares on the NYSE under the Form 144 notice.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 08/17/2026 - 04:24 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001885900
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	STUBHUB HOLDINGS INC
SEC File Number	001-42846
Address of Issuer	175 Greenwich Street, 59th Floor New York NEW YORK 10007
Phone	888-977-5364
Name of Person for Whose Account the Securities are To Be Sold	Mark Streams
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer, Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Class A Common	J.P. Morgan Securities LLC 270 Park Avenue 10th Floor New York NY 10017	334746	2647841	357339966	08/17/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Class A Common	12/04/2020	Stock Option Exercise	Issuer			328777	06/29/2026	Cash
Class A Common	12/16/2025	RSU Vest	Issuer			1991	12/16/2025	NA
Class A Common	01/13/2026	RSU Vest	Issuer			1989	01/13/2026	NA
Class A Common	02/10/2026	RSU Vest	Issuer			1989	02/10/2026	NA

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Mark Streams 175 Greenwich Street, 59th Floor New York NY 10007	Class A Common	06/29/2026	300	3900
Mark Streams 175 Greenwich Street, 59th Floor New York NY 10007	Class A Common	06/30/2026	18167	236751
Mark Streams 175 Greenwich Street, 59th Floor New York NY 10007	Class A Common	07/01/2026	3002	39026
Mark Streams 175 Greenwich Street, 59th Floor New York NY 10007	Class A Common	07/06/2026	28531	371402
Mark Streams 175 Greenwich Street, 59th Floor New York NY 10007	Class A Common	07/07/2026	400	5603

144: Remarks and Signature

Remarks
Date of Notice	08/17/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ J.P. Morgan Securities LLC as agent and attorney-in-fact for Mark Streams
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)