Rush Street Interactive trust proposes $1.22M sale

Two earlier 10b5-1 sales by the trust each involved 20,000 common shares.

Rhea-AI Filing Summary

Rush Street Interactive, Inc. (RSI) common shares are listed for a proposed sale by SONA TRUST U/A DTD 05/09/2025: 60,000 shares with an aggregate market value of $1,219,800, on the approximate sale date October 1, 2026, through Morgan Stanley Smith Barney LLC. The trust reported earlier 10b5-1 sales of 20,000 shares on August 3, 2026, for $560,555, and 20,000 shares on September 1, 2026, for $513,600. The shares are identified as Founders Shares acquired from the issuer on December 29, 2020. Mattias Stetz, identified as an officer, signed.

Key Figures

Common shares listed for proposed sale: 60,000 shares Aggregate market value: $1,219,800 Prior 10b5-1 sale: 20,000 shares +3 more

6 metrics

Common shares listed for proposed sale 60,000 shares Approximate sale date October 1, 2026

Aggregate market value $1,219,800 Proposed sale of common shares

Prior 10b5-1 sale 20,000 shares August 3, 2026

Prior sale value $560,555 10b5-1 sale on August 3, 2026

Prior 10b5-1 sale 20,000 shares September 1, 2026

Prior sale value $513,600 10b5-1 sale on September 1, 2026

Key Terms

Rule 144, 10b5-1 Sales, Founders Shares

3 terms

Rule 144 regulatory

"sales required by paragraph (e) of Rule 144"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

10b5-1 Sales regulatory

"10b5-1 Sales for SONA TRUST"

10b5-1 sales are pre-arranged stock-trading plans that let company insiders automatically buy or sell shares according to a fixed schedule or formula, even if they later learn confidential information. Think of it as setting up an automatic thermostat for trades: it creates a clear, documented path that can protect insiders from insider-trading accusations and gives investors a signal about predictable insider activity—though it can also simply be a way for insiders to diversify or raise cash.

Founders Shares financial

"Founders Shares | Issuer"

Founders shares are a special block of a company’s stock originally given to the people who started the business; they often carry extra voting power or favorable terms compared with regular shares. For investors, these shares matter because they concentrate control and influence how future funding, ownership dilution, and decision-making will play out—think of founders shares as the steering wheel that can steer a company’s direction even as more passengers (investors) climb aboard.

FAQ

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

How many RSI shares does SONA TRUST plan to sell?

SONA TRUST U/A DTD 05/09/2025 is listed for a proposed sale of 60,000 common shares, with an aggregate market value of $1,219,800. The approximate sale date is October 1, 2026, and Morgan Stanley Smith Barney LLC is named as the broker.

What recent RSI stock sales did SONA TRUST report?

The trust reported 10b5-1 sales of 20,000 shares on August 3, 2026, for $560,555, and 20,000 shares on September 1, 2026, for $513,600.

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

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Available on EDGAR 10/01/2026 - 04:38 PM Accepted by SEC EDGAR 10/01/2026 - 04:38 PM 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	0001835040
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	Rush Street Interactive, Inc.
SEC File Number	001-39232
Address of Issuer	900 N. Michigan Avenue, Suite 950 Chicago ILLINOIS 60611
Phone	7738935855
Name of Person for Whose Account the Securities are To Be Sold	SONA TRUST U/A DTD 05/09/2025
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

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
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	60000	1219800.00	115626347	10/01/2026	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 *
Common	12/29/2020	Founders Shares	Issuer			60000	12/29/2020	N/A

* 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
10b5-1 Sales for SONA TRUST 900 N. Michigan Avenue, Suite 950 Chicago IL 60611	Common	09/01/2026	20000	513600.00
10b5-1 Sales for SONA TRUST 900 N. Michigan Avenue, Suite 950 Chicago IL 60611	Common	08/03/2026	20000	560555.00

144: Remarks and Signature

Remarks
Date of Notice	10/01/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	08/22/2025
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/ Mattias Stetz
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)