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STETZ MATTIAS

Disclosed activity across 1 company

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2292
SEC CIK
0001835040

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Rush Street Interactive, Inc.RSI · Entity 2291Chief Operating OfficerOctober 01, 2026October 05, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Rush Street Interactive, Inc.

Report date October 01, 2026 · Filed October 05, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Class A Common StockSEC Table I · non-derivativeDirect137,874 Reported balance After 2026-10-01 transaction · row 1
1 source row

Row 1 · 2026-10-01 · Sale · Disposed 20,000 · Balance 137,874

F1: Shares were sold pursuant to a 10b5-1 plan.

F2: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $19.56 to $20.29 per share. The Reporting Person undertakes to provide to 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.

Class A Common StockSEC Table I · non-derivativeIndirectBy Spouse105,448 Reported balance Holding disclosure · report date 2026-10-01 · row 2 Holding and transaction disclosures are not merged.
1 source row

Row 2 · Balance 105,448

Filing footnotes · ownership attribution and instrument terms

F1: Shares were sold pursuant to a 10b5-1 plan.

F2: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $19.56 to $20.29 per share. The Reporting Person undertakes to provide to 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.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
October 01, 2026 Filed Oct 5, 2026 22:14 UTC Rush Street Interactive, Inc. RSI · Entity 2291 SaleClass A Common Stock 20,000 $19.87 $397,498.00
Disclosure

SEC source: 0001835040-26-000031 · wk-form4_1791238484.xml · nonDerivative · entry 1

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 137,874

F1 · kind: Shares were sold pursuant to a 10b5-1 plan.

F2 · price: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $19.56 to $20.29 per share. The Reporting Person undertakes to provide to 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.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 21:57 UTC Rush Street Interactive, Inc. RSI · Entity 2291 SaleClass A Common Stock 20,000 $25.68 $513,600.00
Disclosure

SEC source: 0001835040-26-000029 · wk-form4_1788472666.xml · nonDerivative · entry 1

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 157,874

F1 · kind: Shares were sold pursuant to a 10b5-1 plan.

F2 · price: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $25.195 to $26.23 per share. The Reporting Person undertakes to provide to 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.

Read SEC document
August 03, 2026 Filed Aug 5, 2026 22:04 UTC Rush Street Interactive, Inc. RSI · Entity 2291 SaleClass A Common Stock 20,000 $28.03 $560,556.00
Disclosure

SEC source: 0001835040-26-000027 · wk-form4_1785967484.xml · nonDerivative · entry 1

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 177,874

F1 · kind: Shares were sold pursuant to a 10b5-1 plan.

F2 · price: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $26.53 to $28.77 per share. The Reporting Person undertakes to provide to 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.

Read SEC document
July 01, 2026 Filed Jul 2, 2026 21:53 UTC Rush Street Interactive, Inc. RSI · Entity 2291 SaleClass A Common Stock 20,000 $31.22 $624,374.00
Disclosure

SEC source: 0001835040-26-000025 · wk-form4_1783029236.xml · nonDerivative · entry 1

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 197,874

F1 · kind: Shares were sold pursuant to a 10b5-1 plan.

F2 · price: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $30.42 to $31.67 per share. The Reporting Person undertakes to provide to 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.

Read SEC document
June 01, 2026 Filed Jun 3, 2026 22:01 UTC Rush Street Interactive, Inc. RSI · Entity 2291 SaleClass A Common Stock 20,000 $25.63 $512,680.00
Disclosure

SEC source: 0001835040-26-000023 · wk-form4_1780524102.xml · nonDerivative · entry 1

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 217,874

F1 · kind: Shares were sold pursuant to a 10b5-1 plan.

F2 · price: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $25.37 to $25.96 per share. The Reporting Person undertakes to provide to 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.

Read SEC document
May 06, 2026 Filed May 6, 2026 22:15 UTC Rush Street Interactive, Inc. RSI · Entity 2291 ConversionClass A Common Units of Rush Street Interactive, L.P. · Derivative 11,175 $0.00 $0.00
Disclosure

SEC source: 0001835040-26-000021 · wk-form4_1778105753.xml · derivative · entry 17

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 376,403

Underlying: Class A Common Stock · 11,175 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_price: Pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, beginning on June 29, 2021, the RSI Units beneficially owned by the reporting person may be exchanged, subject to certain conditions, for one share of Class A Common Stock of the Issuer. Upon such exchange, an equivalent number of shares of Class V Voting Stock then held by the reporting person will be canceled.

F5 · derivative.exercise_date: Pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, beginning on June 29, 2021, the RSI Units beneficially owned by the reporting person may be exchanged, subject to certain conditions, for one share of Class A Common Stock of the Issuer. Upon such exchange, an equivalent number of shares of Class V Voting Stock then held by the reporting person will be canceled.

F5 · derivative.expiration_date: Pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, beginning on June 29, 2021, the RSI Units beneficially owned by the reporting person may be exchanged, subject to certain conditions, for one share of Class A Common Stock of the Issuer. Upon such exchange, an equivalent number of shares of Class V Voting Stock then held by the reporting person will be canceled.

Read SEC document
May 06, 2026 Filed May 6, 2026 22:15 UTC Rush Street Interactive, Inc. RSI · Entity 2291 ConversionClass A Common Units of Rush Street Interactive, L.P. · Derivative 11,175 $0.00 $0.00
Disclosure

SEC source: 0001835040-26-000021 · wk-form4_1778105753.xml · derivative · entry 16

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 764,325

Underlying: Class A Common Stock · 11,175 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_price: Pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, beginning on June 29, 2021, the RSI Units beneficially owned by the reporting person may be exchanged, subject to certain conditions, for one share of Class A Common Stock of the Issuer. Upon such exchange, an equivalent number of shares of Class V Voting Stock then held by the reporting person will be canceled.

F5 · derivative.exercise_date: Pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, beginning on June 29, 2021, the RSI Units beneficially owned by the reporting person may be exchanged, subject to certain conditions, for one share of Class A Common Stock of the Issuer. Upon such exchange, an equivalent number of shares of Class V Voting Stock then held by the reporting person will be canceled.

F5 · derivative.expiration_date: Pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, beginning on June 29, 2021, the RSI Units beneficially owned by the reporting person may be exchanged, subject to certain conditions, for one share of Class A Common Stock of the Issuer. Upon such exchange, an equivalent number of shares of Class V Voting Stock then held by the reporting person will be canceled.

F2 · ownership.nature: The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that such securities are beneficially owned by the Reporting Person for Section 16 or any other purpose.

Read SEC document
May 06, 2026 Filed May 6, 2026 22:15 UTC Rush Street Interactive, Inc. RSI · Entity 2291 SaleClass A Common Stock 11,175 $24.96 $278,928.00
Disclosure

SEC source: 0001835040-26-000021 · wk-form4_1778105753.xml · nonDerivative · entry 12

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 237,874

Read SEC document
May 06, 2026 Filed May 6, 2026 22:15 UTC Rush Street Interactive, Inc. RSI · Entity 2291 SaleClass A Common Stock 11,175 $24.96 $278,928.00
Disclosure

SEC source: 0001835040-26-000021 · wk-form4_1778105753.xml · nonDerivative · entry 11

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 0

F2 · ownership.nature: The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that such securities are beneficially owned by the Reporting Person for Section 16 or any other purpose.

Read SEC document
May 06, 2026 Filed May 6, 2026 22:15 UTC Rush Street Interactive, Inc. RSI · Entity 2291 Disposition to issuerClass V Voting Stock 11,175 $0.00 $0.00
Disclosure

SEC source: 0001835040-26-000021 · wk-form4_1778105753.xml · nonDerivative · entry 10

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 376,403

F4 · price: On May 6, 2026, the Reporting Person and/or affiliated trusts exchanged, pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, the number of RSI Units set forth in this box for the same number of shares of Class A Common Stock of the Issuer, together with an equivalent number of Class V Voting Stock of the Issuer held by the Reporting Person and/or affiliated trusts, as applicable, being canceled.

F3 · balance_after: The shares of Class V Voting Stock of the Issuer provide no economic rights in the Issuer to the holder thereof. However, each holder of Class V Voting Stock will be entitled to vote as a common stockholder of the Issuer, with the number of votes equal to the number of shares of Class V Voting Stock held at the time of such vote.

F4 · balance_after: On May 6, 2026, the Reporting Person and/or affiliated trusts exchanged, pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, the number of RSI Units set forth in this box for the same number of shares of Class A Common Stock of the Issuer, together with an equivalent number of Class V Voting Stock of the Issuer held by the Reporting Person and/or affiliated trusts, as applicable, being canceled.

Read SEC document
May 06, 2026 Filed May 6, 2026 22:15 UTC Rush Street Interactive, Inc. RSI · Entity 2291 ConversionClass A Common Stock 11,175 $0.00 $0.00
Disclosure

SEC source: 0001835040-26-000021 · wk-form4_1778105753.xml · nonDerivative · entry 9

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 249,049

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · price: On May 6, 2026, the Reporting Person and/or affiliated trusts exchanged, pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, the number of RSI Units set forth in this box for the same number of shares of Class A Common Stock of the Issuer, together with an equivalent number of Class V Voting Stock of the Issuer held by the Reporting Person and/or affiliated trusts, as applicable, being canceled.

Read SEC document
May 06, 2026 Filed May 6, 2026 22:15 UTC Rush Street Interactive, Inc. RSI · Entity 2291 Disposition to issuerClass V Voting Stock 11,175 $0.00 $0.00
Disclosure

SEC source: 0001835040-26-000021 · wk-form4_1778105753.xml · nonDerivative · entry 8

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 764,325

F4 · price: On May 6, 2026, the Reporting Person and/or affiliated trusts exchanged, pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, the number of RSI Units set forth in this box for the same number of shares of Class A Common Stock of the Issuer, together with an equivalent number of Class V Voting Stock of the Issuer held by the Reporting Person and/or affiliated trusts, as applicable, being canceled.

F3 · balance_after: The shares of Class V Voting Stock of the Issuer provide no economic rights in the Issuer to the holder thereof. However, each holder of Class V Voting Stock will be entitled to vote as a common stockholder of the Issuer, with the number of votes equal to the number of shares of Class V Voting Stock held at the time of such vote.

F4 · balance_after: On May 6, 2026, the Reporting Person and/or affiliated trusts exchanged, pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, the number of RSI Units set forth in this box for the same number of shares of Class A Common Stock of the Issuer, together with an equivalent number of Class V Voting Stock of the Issuer held by the Reporting Person and/or affiliated trusts, as applicable, being canceled.

F2 · ownership.nature: The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that such securities are beneficially owned by the Reporting Person for Section 16 or any other purpose.

Read SEC document
May 06, 2026 Filed May 6, 2026 22:15 UTC Rush Street Interactive, Inc. RSI · Entity 2291 ConversionClass A Common Stock 11,175 $0.00 $0.00
Disclosure

SEC source: 0001835040-26-000021 · wk-form4_1778105753.xml · nonDerivative · entry 7

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 11,175

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · price: On May 6, 2026, the Reporting Person and/or affiliated trusts exchanged, pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, the number of RSI Units set forth in this box for the same number of shares of Class A Common Stock of the Issuer, together with an equivalent number of Class V Voting Stock of the Issuer held by the Reporting Person and/or affiliated trusts, as applicable, being canceled.

F2 · ownership.nature: The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that such securities are beneficially owned by the Reporting Person for Section 16 or any other purpose.

Read SEC document
May 05, 2026 Filed May 6, 2026 22:15 UTC Rush Street Interactive, Inc. RSI · Entity 2291 ConversionClass A Common Units of Rush Street Interactive, L.P. · Derivative 74,500 $0.00 $0.00
Disclosure

SEC source: 0001835040-26-000021 · wk-form4_1778105753.xml · derivative · entry 15

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 387,578

Underlying: Class A Common Stock · 74,500 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_price: Pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, beginning on June 29, 2021, the RSI Units beneficially owned by the reporting person may be exchanged, subject to certain conditions, for one share of Class A Common Stock of the Issuer. Upon such exchange, an equivalent number of shares of Class V Voting Stock then held by the reporting person will be canceled.

F5 · derivative.exercise_date: Pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, beginning on June 29, 2021, the RSI Units beneficially owned by the reporting person may be exchanged, subject to certain conditions, for one share of Class A Common Stock of the Issuer. Upon such exchange, an equivalent number of shares of Class V Voting Stock then held by the reporting person will be canceled.

F5 · derivative.expiration_date: Pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, beginning on June 29, 2021, the RSI Units beneficially owned by the reporting person may be exchanged, subject to certain conditions, for one share of Class A Common Stock of the Issuer. Upon such exchange, an equivalent number of shares of Class V Voting Stock then held by the reporting person will be canceled.

Read SEC document
May 05, 2026 Filed May 6, 2026 22:15 UTC Rush Street Interactive, Inc. RSI · Entity 2291 ConversionClass A Common Units of Rush Street Interactive, L.P. · Derivative 74,500 $0.00 $0.00
Disclosure

SEC source: 0001835040-26-000021 · wk-form4_1778105753.xml · derivative · entry 14

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 775,500

Underlying: Class A Common Stock · 74,500 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_price: Pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, beginning on June 29, 2021, the RSI Units beneficially owned by the reporting person may be exchanged, subject to certain conditions, for one share of Class A Common Stock of the Issuer. Upon such exchange, an equivalent number of shares of Class V Voting Stock then held by the reporting person will be canceled.

F5 · derivative.exercise_date: Pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, beginning on June 29, 2021, the RSI Units beneficially owned by the reporting person may be exchanged, subject to certain conditions, for one share of Class A Common Stock of the Issuer. Upon such exchange, an equivalent number of shares of Class V Voting Stock then held by the reporting person will be canceled.

F5 · derivative.expiration_date: Pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, beginning on June 29, 2021, the RSI Units beneficially owned by the reporting person may be exchanged, subject to certain conditions, for one share of Class A Common Stock of the Issuer. Upon such exchange, an equivalent number of shares of Class V Voting Stock then held by the reporting person will be canceled.

F2 · ownership.nature: The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that such securities are beneficially owned by the Reporting Person for Section 16 or any other purpose.

Read SEC document
May 05, 2026 Filed May 6, 2026 22:15 UTC Rush Street Interactive, Inc. RSI · Entity 2291 SaleClass A Common Stock 74,500 $24.96 $1,859,520.00
Disclosure

SEC source: 0001835040-26-000021 · wk-form4_1778105753.xml · nonDerivative · entry 6

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 0

F2 · ownership.nature: The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that such securities are beneficially owned by the Reporting Person for Section 16 or any other purpose.

Read SEC document
May 05, 2026 Filed May 6, 2026 22:15 UTC Rush Street Interactive, Inc. RSI · Entity 2291 SaleClass A Common Stock 74,500 $24.96 $1,859,520.00
Disclosure

SEC source: 0001835040-26-000021 · wk-form4_1778105753.xml · nonDerivative · entry 5

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 237,874

Read SEC document
May 05, 2026 Filed May 6, 2026 22:15 UTC Rush Street Interactive, Inc. RSI · Entity 2291 Disposition to issuerClass V Voting Stock 74,500 $0.00 $0.00
Disclosure

SEC source: 0001835040-26-000021 · wk-form4_1778105753.xml · nonDerivative · entry 4

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 387,578

F1 · price: On May 5, 2026, the Reporting Person and/or affiliated trusts exchanged, pursuant to the Amended and Restated Limited Partnership Agreement of Rush Street Interactive, LP ("RSI LP"), the number of Class A Common Stock Units ("RSI Units") set forth in this box for the same number of shares of Class A Common Stock of the Issuer, together with an equivalent number of Class V Voting Stock of the Issuer held by the Reporting Person and/or affiliated trusts, as applicable, being canceled.

F1 · balance_after: On May 5, 2026, the Reporting Person and/or affiliated trusts exchanged, pursuant to the Amended and Restated Limited Partnership Agreement of Rush Street Interactive, LP ("RSI LP"), the number of Class A Common Stock Units ("RSI Units") set forth in this box for the same number of shares of Class A Common Stock of the Issuer, together with an equivalent number of Class V Voting Stock of the Issuer held by the Reporting Person and/or affiliated trusts, as applicable, being canceled.

F3 · balance_after: The shares of Class V Voting Stock of the Issuer provide no economic rights in the Issuer to the holder thereof. However, each holder of Class V Voting Stock will be entitled to vote as a common stockholder of the Issuer, with the number of votes equal to the number of shares of Class V Voting Stock held at the time of such vote.

Read SEC document
May 05, 2026 Filed May 6, 2026 22:15 UTC Rush Street Interactive, Inc. RSI · Entity 2291 ConversionClass A Common Stock 74,500 $0.00 $0.00
Disclosure

SEC source: 0001835040-26-000021 · wk-form4_1778105753.xml · nonDerivative · entry 3

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 312,374

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: On May 5, 2026, the Reporting Person and/or affiliated trusts exchanged, pursuant to the Amended and Restated Limited Partnership Agreement of Rush Street Interactive, LP ("RSI LP"), the number of Class A Common Stock Units ("RSI Units") set forth in this box for the same number of shares of Class A Common Stock of the Issuer, together with an equivalent number of Class V Voting Stock of the Issuer held by the Reporting Person and/or affiliated trusts, as applicable, being canceled.

Read SEC document
May 05, 2026 Filed May 6, 2026 22:15 UTC Rush Street Interactive, Inc. RSI · Entity 2291 Disposition to issuerClass V Voting Stock 74,500 $0.00 $0.00
Disclosure

SEC source: 0001835040-26-000021 · wk-form4_1778105753.xml · nonDerivative · entry 2

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 775,500

F1 · price: On May 5, 2026, the Reporting Person and/or affiliated trusts exchanged, pursuant to the Amended and Restated Limited Partnership Agreement of Rush Street Interactive, LP ("RSI LP"), the number of Class A Common Stock Units ("RSI Units") set forth in this box for the same number of shares of Class A Common Stock of the Issuer, together with an equivalent number of Class V Voting Stock of the Issuer held by the Reporting Person and/or affiliated trusts, as applicable, being canceled.

F1 · balance_after: On May 5, 2026, the Reporting Person and/or affiliated trusts exchanged, pursuant to the Amended and Restated Limited Partnership Agreement of Rush Street Interactive, LP ("RSI LP"), the number of Class A Common Stock Units ("RSI Units") set forth in this box for the same number of shares of Class A Common Stock of the Issuer, together with an equivalent number of Class V Voting Stock of the Issuer held by the Reporting Person and/or affiliated trusts, as applicable, being canceled.

F3 · balance_after: The shares of Class V Voting Stock of the Issuer provide no economic rights in the Issuer to the holder thereof. However, each holder of Class V Voting Stock will be entitled to vote as a common stockholder of the Issuer, with the number of votes equal to the number of shares of Class V Voting Stock held at the time of such vote.

F2 · ownership.nature: The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that such securities are beneficially owned by the Reporting Person for Section 16 or any other purpose.

Read SEC document
May 05, 2026 Filed May 6, 2026 22:15 UTC Rush Street Interactive, Inc. RSI · Entity 2291 ConversionClass A Common Stock 74,500 $0.00 $0.00
Disclosure

SEC source: 0001835040-26-000021 · wk-form4_1778105753.xml · nonDerivative · entry 1

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 74,500

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: On May 5, 2026, the Reporting Person and/or affiliated trusts exchanged, pursuant to the Amended and Restated Limited Partnership Agreement of Rush Street Interactive, LP ("RSI LP"), the number of Class A Common Stock Units ("RSI Units") set forth in this box for the same number of shares of Class A Common Stock of the Issuer, together with an equivalent number of Class V Voting Stock of the Issuer held by the Reporting Person and/or affiliated trusts, as applicable, being canceled.

F2 · ownership.nature: The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that such securities are beneficially owned by the Reporting Person for Section 16 or any other purpose.

Read SEC document
May 01, 2026 Filed May 1, 2026 22:05 UTC Rush Street Interactive, Inc. RSI · Entity 2291 ConversionClass A Common Units of Rush Street Interactive, L.P. · Derivative 20,000 $0.00 $0.00
Disclosure

SEC source: 0001835040-26-000019 · wk-form4_1777673148.xml · derivative · entry 6

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 462,078

Underlying: Class A Common Stock · 20,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_price: Pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, beginning on June 29, 2021, the RSI Units beneficially owned by the reporting person may be exchanged, subject to certain conditions, for one share of Class A Common Stock of the Issuer. Upon such exchange, an equivalent number of shares of Class V Voting Stock then held by the reporting person will be canceled.

F6 · derivative.exercise_date: Pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, beginning on June 29, 2021, the RSI Units beneficially owned by the reporting person may be exchanged, subject to certain conditions, for one share of Class A Common Stock of the Issuer. Upon such exchange, an equivalent number of shares of Class V Voting Stock then held by the reporting person will be canceled.

F6 · derivative.expiration_date: Pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, beginning on June 29, 2021, the RSI Units beneficially owned by the reporting person may be exchanged, subject to certain conditions, for one share of Class A Common Stock of the Issuer. Upon such exchange, an equivalent number of shares of Class V Voting Stock then held by the reporting person will be canceled.

Read SEC document
May 01, 2026 Filed May 1, 2026 22:05 UTC Rush Street Interactive, Inc. RSI · Entity 2291 SaleClass A Common Stock 20,000 $28.09 $561,878.00
Disclosure

SEC source: 0001835040-26-000019 · wk-form4_1777673148.xml · nonDerivative · entry 3

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 237,874

F3 · kind: Shares were sold pursuant to a 10b5-1 plan.

F4 · price: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $27.75 to $28.49 per share. The Reporting Person undertakes to provide to 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.

Read SEC document
May 01, 2026 Filed May 1, 2026 22:05 UTC Rush Street Interactive, Inc. RSI · Entity 2291 Disposition to issuerClass V Voting Stock 20,000 $0.00 $0.00
Disclosure

SEC source: 0001835040-26-000019 · wk-form4_1777673148.xml · nonDerivative · entry 2

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 462,078

F1 · price: On May 1, 2026, the Reporting Person exchanged, pursuant to the Amended and Restated Limited Partnership Agreement of Rush Street Interactive, LP ("RSI LP"), 20,000 Class A Common Stock Units ("RSI Units") for 20,000 shares of Class A Common Stock of the Issuer, together with an equivalent number of Class V Voting Stock of the Issuer held by the Reporting Person being canceled.

F1 · balance_after: On May 1, 2026, the Reporting Person exchanged, pursuant to the Amended and Restated Limited Partnership Agreement of Rush Street Interactive, LP ("RSI LP"), 20,000 Class A Common Stock Units ("RSI Units") for 20,000 shares of Class A Common Stock of the Issuer, together with an equivalent number of Class V Voting Stock of the Issuer held by the Reporting Person being canceled.

F2 · balance_after: The shares of Class V Voting Stock of the Issuer provide no economic rights in the Issuer to the holder thereof. However, each holder of Class V Voting Stock will be entitled to vote as a common stockholder of the Issuer, with the number of votes equal to the number of shares of Class V Voting Stock held at the time of such vote.

Read SEC document
May 01, 2026 Filed May 1, 2026 22:05 UTC Rush Street Interactive, Inc. RSI · Entity 2291 ConversionClass A Common Stock 20,000 $0.00 $0.00
Disclosure

SEC source: 0001835040-26-000019 · wk-form4_1777673148.xml · nonDerivative · entry 1

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 257,874

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: On May 1, 2026, the Reporting Person exchanged, pursuant to the Amended and Restated Limited Partnership Agreement of Rush Street Interactive, LP ("RSI LP"), 20,000 Class A Common Stock Units ("RSI Units") for 20,000 shares of Class A Common Stock of the Issuer, together with an equivalent number of Class V Voting Stock of the Issuer held by the Reporting Person being canceled.

Read SEC document
April 29, 2026 Filed Apr 29, 2026 22:25 UTC Rush Street Interactive, Inc. RSI · Entity 2291 ConversionClass A Common Units of Rush Street Interactive, L.P. · Derivative 50,000 $0.00 $0.00
Disclosure

SEC source: 0001835040-26-000017 · wk-form4_1777501553.xml · derivative · entry 7

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 850,000

Underlying: Class A Common Stock · 50,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F7 · derivative.exercise_price: Pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, beginning on June 29, 2021, the RSI Units beneficially owned by the reporting person may be exchanged, subject to certain conditions, for one share of Class A Common Stock of the Issuer. Upon such exchange, an equivalent number of shares of Class V Voting Stock then held by the reporting person will be canceled.

F7 · derivative.exercise_date: Pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, beginning on June 29, 2021, the RSI Units beneficially owned by the reporting person may be exchanged, subject to certain conditions, for one share of Class A Common Stock of the Issuer. Upon such exchange, an equivalent number of shares of Class V Voting Stock then held by the reporting person will be canceled.

F7 · derivative.expiration_date: Pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, beginning on June 29, 2021, the RSI Units beneficially owned by the reporting person may be exchanged, subject to certain conditions, for one share of Class A Common Stock of the Issuer. Upon such exchange, an equivalent number of shares of Class V Voting Stock then held by the reporting person will be canceled.

F4 · ownership.nature: The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that such securities are beneficially owned by the Reporting Person for Section 16 or any other purpose.

Read SEC document
April 29, 2026 Filed Apr 29, 2026 22:25 UTC Rush Street Interactive, Inc. RSI · Entity 2291 SaleClass A Common Stock 50,000 $27.44 $1,372,185.00
Disclosure

SEC source: 0001835040-26-000017 · wk-form4_1777501553.xml · nonDerivative · entry 4

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 0

F1 · kind: Shares were sold pursuant to a 10b5-1 plan.

F6 · price: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $26.40 to $28.25 per share. The Reporting Person undertakes to provide to 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.

F4 · ownership.nature: The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that such securities are beneficially owned by the Reporting Person for Section 16 or any other purpose.

Read SEC document
April 29, 2026 Filed Apr 29, 2026 22:25 UTC Rush Street Interactive, Inc. RSI · Entity 2291 Disposition to issuerClass V Voting Stock 50,000 $0.00 $0.00
Disclosure

SEC source: 0001835040-26-000017 · wk-form4_1777501553.xml · nonDerivative · entry 3

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 850,000

F3 · price: On April 29, 2026, the Reporting Person exchanged, pursuant to the Amended and Restated Limited Partnership Agreement of Rush Street Interactive, LP ("RSI LP"), 50,000 Class A Common Stock Units ("RSI Units") for 50,000 shares of Class A Common Stock of the Issuer, together with an equivalent number of Class V Voting Stock of the Issuer held by the Reporting Person being canceled.

F3 · balance_after: On April 29, 2026, the Reporting Person exchanged, pursuant to the Amended and Restated Limited Partnership Agreement of Rush Street Interactive, LP ("RSI LP"), 50,000 Class A Common Stock Units ("RSI Units") for 50,000 shares of Class A Common Stock of the Issuer, together with an equivalent number of Class V Voting Stock of the Issuer held by the Reporting Person being canceled.

F5 · balance_after: The shares of Class V Voting Stock of the Issuer provide no economic rights in the Issuer to the holder thereof. However, each holder of Class V Voting Stock will be entitled to vote as a common stockholder of the Issuer, with the number of votes equal to the number of shares of Class V Voting Stock held at the time of such vote.

F4 · ownership.nature: The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that such securities are beneficially owned by the Reporting Person for Section 16 or any other purpose.

Read SEC document
April 29, 2026 Filed Apr 29, 2026 22:25 UTC Rush Street Interactive, Inc. RSI · Entity 2291 ConversionClass A Common Stock 50,000 $0.00 $0.00
Disclosure

SEC source: 0001835040-26-000017 · wk-form4_1777501553.xml · nonDerivative · entry 2

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 50,000

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · price: On April 29, 2026, the Reporting Person exchanged, pursuant to the Amended and Restated Limited Partnership Agreement of Rush Street Interactive, LP ("RSI LP"), 50,000 Class A Common Stock Units ("RSI Units") for 50,000 shares of Class A Common Stock of the Issuer, together with an equivalent number of Class V Voting Stock of the Issuer held by the Reporting Person being canceled.

F4 · ownership.nature: The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that such securities are beneficially owned by the Reporting Person for Section 16 or any other purpose.

Read SEC document
April 27, 2026 Filed Apr 29, 2026 22:25 UTC Rush Street Interactive, Inc. RSI · Entity 2291 SaleClass A Common Stock 20,000 $24.06 $481,124.00
Disclosure

SEC source: 0001835040-26-000017 · wk-form4_1777501553.xml · nonDerivative · entry 1

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Spouse

Disclosed balance after: 105,448

F1 · kind: Shares were sold pursuant to a 10b5-1 plan.

F2 · price: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $24 to $24.15 per share. The Reporting Person undertakes to provide to 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.

Read SEC document
April 01, 2026 Filed Apr 2, 2026 22:15 UTC Rush Street Interactive, Inc. RSI · Entity 2291 SaleClass A Common Stock 20,000 $22.07 $441,444.00
Disclosure

SEC source: 0001835040-26-000015 · wk-form4_1775168110.xml · nonDerivative · entry 1

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 237,874

F1 · kind: Shares were sold pursuant to a 10b5-1 plan.

F2 · price: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $21.74 to $22.32 per share. The Reporting Person undertakes to provide to 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.

Read SEC document
March 24, 2026 Filed Mar 25, 2026 21:57 UTC Rush Street Interactive, Inc. RSI · Entity 2291 SaleClass A Common Stock 20,000 $22.02 $440,462.00
Disclosure

SEC source: 0001835040-26-000013 · wk-form4_1774475872.xml · nonDerivative · entry 1

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Spouse

Disclosed balance after: 125,448

F1 · kind: Shares were sold pursuant to a 10b5-1 plan.

F2 · price: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $22 to $22.06 per share. The Reporting Person undertakes to provide to 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.

Read SEC document
March 16, 2026 Filed Mar 17, 2026 22:32 UTC Rush Street Interactive, Inc. RSI · Entity 2291 Tax withholdingClass A Common Stock 27,173 $20.25 $550,253.25
Disclosure

SEC source: 0001835040-26-000011 · wk-form4_1773786776.xml · nonDerivative · entry 2

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 257,874

F2 · shares: Represents shares that have been withheld by the Issuer to satisfy income tax withholding and remittance obligations in connection with the vesting and net settlement of the Reporting Person's previously disclosed RSUs and does not represent a sale by the Reporting Person.

Read SEC document
March 14, 2026 Filed Mar 17, 2026 22:32 UTC Rush Street Interactive, Inc. RSI · Entity 2291 GrantClass A Common Stock 35,423 $0.00 $0.00
Disclosure

SEC source: 0001835040-26-000011 · wk-form4_1773786776.xml · nonDerivative · entry 1

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 285,047

F1 · acquired: On March 14, 2026, the Reporting Person was awarded 35,423 restricted stock units (the "RSUs") under the Rush Street Interactive, Inc. 2020 Omnibus Equity Incentive Plan, as amended. The RSUs vest in three equal annual installments beginning on the first anniversary of the grant date, subject to the Reporting Person's continued service through each such vesting date.

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March 04, 2026 Filed Mar 4, 2026 23:35 UTC Rush Street Interactive, Inc. RSI · Entity 2291 SaleClass A Common Stock 3,398 $20.22 $68,707.22
Disclosure

SEC source: 0001835040-26-000009 · wk-form4_1772667354.xml · nonDerivative · entry 11

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 249,624

F4 · kind: Shares were sold pursuant to a 10b5-1 plan.

F7 · price: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $20.00 to $20.46 per share. The Reporting Person undertakes to provide to 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.

Read SEC document
March 04, 2026 Filed Mar 4, 2026 23:35 UTC Rush Street Interactive, Inc. RSI · Entity 2291 SaleClass A Common Stock 3,397 $20.22 $68,687.00
Disclosure

SEC source: 0001835040-26-000009 · wk-form4_1772667354.xml · nonDerivative · entry 10

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Spouse

Disclosed balance after: 145,448

F4 · kind: Shares were sold pursuant to a 10b5-1 plan.

F7 · price: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $20.00 to $20.46 per share. The Reporting Person undertakes to provide to 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.

Read SEC document
March 04, 2026 Filed Mar 4, 2026 23:35 UTC Rush Street Interactive, Inc. RSI · Entity 2291 SaleClass A Common Stock 8,495 $20.22 $171,768.90
Disclosure

SEC source: 0001835040-26-000009 · wk-form4_1772667354.xml · nonDerivative · entry 9

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 0

F4 · kind: Shares were sold pursuant to a 10b5-1 plan.

F7 · price: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $20.00 to $20.46 per share. The Reporting Person undertakes to provide to 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.

F2 · ownership.nature: The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that such securities are beneficially owned by the Reporting Person for Section 16 or any other purpose.

Read SEC document
March 03, 2026 Filed Mar 4, 2026 23:35 UTC Rush Street Interactive, Inc. RSI · Entity 2291 ConversionClass A Common Units of Rush Street Interactive, L.P. · Derivative 50,000 $0.00 $0.00
Disclosure

SEC source: 0001835040-26-000009 · wk-form4_1772667354.xml · derivative · entry 12

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 900,000

Underlying: Class A Common Stock · 50,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F8 · derivative.exercise_price: Pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, beginning on June 29, 2021, the RSI Units beneficially owned by the reporting person may be exchanged, subject to certain conditions, for one share of Class A Common Stock of the Issuer. Upon such exchange, an equivalent number of shares of Class V Voting Stock then held by the reporting person will be canceled.

F8 · derivative.exercise_date: Pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, beginning on June 29, 2021, the RSI Units beneficially owned by the reporting person may be exchanged, subject to certain conditions, for one share of Class A Common Stock of the Issuer. Upon such exchange, an equivalent number of shares of Class V Voting Stock then held by the reporting person will be canceled.

F8 · derivative.expiration_date: Pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, beginning on June 29, 2021, the RSI Units beneficially owned by the reporting person may be exchanged, subject to certain conditions, for one share of Class A Common Stock of the Issuer. Upon such exchange, an equivalent number of shares of Class V Voting Stock then held by the reporting person will be canceled.

F2 · ownership.nature: The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that such securities are beneficially owned by the Reporting Person for Section 16 or any other purpose.

Read SEC document
March 03, 2026 Filed Mar 4, 2026 23:35 UTC Rush Street Interactive, Inc. RSI · Entity 2291 SaleClass A Common Stock 8,493 $20.07 $170,496.13
Disclosure

SEC source: 0001835040-26-000009 · wk-form4_1772667354.xml · nonDerivative · entry 8

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 253,022

F4 · kind: Shares were sold pursuant to a 10b5-1 plan.

Read SEC document
March 03, 2026 Filed Mar 4, 2026 23:35 UTC Rush Street Interactive, Inc. RSI · Entity 2291 SaleClass A Common Stock 8,493 $20.07 $170,496.13
Disclosure

SEC source: 0001835040-26-000009 · wk-form4_1772667354.xml · nonDerivative · entry 7

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Spouse

Disclosed balance after: 148,845

F4 · kind: Shares were sold pursuant to a 10b5-1 plan.

Read SEC document
March 03, 2026 Filed Mar 4, 2026 23:35 UTC Rush Street Interactive, Inc. RSI · Entity 2291 SaleClass A Common Stock 21,232 $20.07 $426,230.28
Disclosure

SEC source: 0001835040-26-000009 · wk-form4_1772667354.xml · nonDerivative · entry 6

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 8,495

F4 · kind: Shares were sold pursuant to a 10b5-1 plan.

F2 · ownership.nature: The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that such securities are beneficially owned by the Reporting Person for Section 16 or any other purpose.

Read SEC document
March 02, 2026 Filed Mar 4, 2026 23:35 UTC Rush Street Interactive, Inc. RSI · Entity 2291 SaleClass A Common Stock 28,109 $19.88 $558,764.76
Disclosure

SEC source: 0001835040-26-000009 · wk-form4_1772667354.xml · nonDerivative · entry 5

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 261,515

F4 · kind: Shares were sold pursuant to a 10b5-1 plan.

F6 · price: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $19.29 to $20.04 per share. The Reporting Person undertakes to provide to 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.

Read SEC document
March 02, 2026 Filed Mar 4, 2026 23:35 UTC Rush Street Interactive, Inc. RSI · Entity 2291 SaleClass A Common Stock 8,110 $20.01 $162,246.23
Disclosure

SEC source: 0001835040-26-000009 · wk-form4_1772667354.xml · nonDerivative · entry 4

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Spouse

Disclosed balance after: 157,338

F4 · kind: Shares were sold pursuant to a 10b5-1 plan.

F5 · price: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $20.00 to $20.04 per share. The Reporting Person undertakes to provide to 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.

Read SEC document
March 02, 2026 Filed Mar 4, 2026 23:35 UTC Rush Street Interactive, Inc. RSI · Entity 2291 SaleClass A Common Stock 20,273 $20.01 $405,575.56
Disclosure

SEC source: 0001835040-26-000009 · wk-form4_1772667354.xml · nonDerivative · entry 3

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 29,727

F4 · kind: Shares were sold pursuant to a 10b5-1 plan.

F5 · price: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $20.00 to $20.04 per share. The Reporting Person undertakes to provide to 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.

F2 · ownership.nature: The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that such securities are beneficially owned by the Reporting Person for Section 16 or any other purpose.

Read SEC document
March 02, 2026 Filed Mar 4, 2026 23:35 UTC Rush Street Interactive, Inc. RSI · Entity 2291 Disposition to issuerClass V Voting Stock 50,000 $0.00 $0.00
Disclosure

SEC source: 0001835040-26-000009 · wk-form4_1772667354.xml · nonDerivative · entry 2

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 900,000

F1 · price: On March 2, 2026, the Reporting Person exchanged, pursuant to the Amended and Restated Limited Partnership Agreement of Rush Street Interactive, LP ("RSI LP"), 50,000 Class A Common Stock Units ("RSI Units") for 50,000 shares of Class A Common Stock of the Issuer, together with an equivalent number of Class V Voting Stock of the Issuer held by the Reporting Person being canceled.

F1 · balance_after: On March 2, 2026, the Reporting Person exchanged, pursuant to the Amended and Restated Limited Partnership Agreement of Rush Street Interactive, LP ("RSI LP"), 50,000 Class A Common Stock Units ("RSI Units") for 50,000 shares of Class A Common Stock of the Issuer, together with an equivalent number of Class V Voting Stock of the Issuer held by the Reporting Person being canceled.

F3 · balance_after: The shares of Class V Voting Stock of the Issuer provide no economic rights in the Issuer to the holder thereof. However, each holder of Class V Voting Stock will be entitled to vote as a common stockholder of the Issuer, with the number of votes equal to the number of shares of Class V Voting Stock held at the time of such vote.

F2 · ownership.nature: The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that such securities are beneficially owned by the Reporting Person for Section 16 or any other purpose.

Read SEC document
March 02, 2026 Filed Mar 4, 2026 23:35 UTC Rush Street Interactive, Inc. RSI · Entity 2291 ConversionClass A Common Stock 50,000 $0.00 $0.00
Disclosure

SEC source: 0001835040-26-000009 · wk-form4_1772667354.xml · nonDerivative · entry 1

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 50,000

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: On March 2, 2026, the Reporting Person exchanged, pursuant to the Amended and Restated Limited Partnership Agreement of Rush Street Interactive, LP ("RSI LP"), 50,000 Class A Common Stock Units ("RSI Units") for 50,000 shares of Class A Common Stock of the Issuer, together with an equivalent number of Class V Voting Stock of the Issuer held by the Reporting Person being canceled.

F2 · ownership.nature: The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that such securities are beneficially owned by the Reporting Person for Section 16 or any other purpose.

Read SEC document
February 02, 2026 Filed Feb 4, 2026 22:58 UTC Rush Street Interactive, Inc. RSI · Entity 2291 SaleClass A Common Stock 20,000 $17.67 $353,386.00
Disclosure

SEC source: 0001835040-26-000007 · wk-form4_1770245932.xml · nonDerivative · entry 1

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 289,624

F1 · kind: Shares were sold pursuant to a 10b5-1 Plan.

F2 · price: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $17.18 to $18.13 per share. The Reporting Person undertakes to provide to 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.

Read SEC document
January 06, 2026 Filed Jan 8, 2026 23:06 UTC Rush Street Interactive, Inc. RSI · Entity 2291 Tax withholdingClass A Common Stock 131,874 $19.77 $2,607,148.98
Disclosure

SEC source: 0001835040-26-000004 · wk-form4_1767913587.xml · nonDerivative · entry 2

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 309,624

F2 · shares: Represents shares withheld to cover withholding taxes due upon settlement of the PSUs originally granted to the Reporting Person on March 15, 2023.

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January 06, 2026 Filed Jan 8, 2026 23:06 UTC Rush Street Interactive, Inc. RSI · Entity 2291 GrantClass A Common Stock 296,692 $19.77 $5,865,600.84
Disclosure

SEC source: 0001835040-26-000004 · wk-form4_1767913587.xml · nonDerivative · entry 1

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 441,498

F1 · shares: Represents the aggregate number of shares acquired by the Reporting Person upon the vesting and settlement of Performance Stock Units ("PSUs") originally granted to the Reporting Person on March 15, 2023, the vesting of which was subject to the achievement of certain performance criteria.

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January 02, 2026 Filed Jan 6, 2026 22:55 UTC Rush Street Interactive, Inc. RSI · Entity 2291 ConversionClass A Common Units of Rush Street Interactive, L.P. · Derivative 50,000 $0.00 $0.00
Disclosure

SEC source: 0001835040-26-000002 · wk-form4_1767740113.xml · derivative · entry 7

STETZ MATTIAS · CIK 0001835040 · Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 950,000

Underlying: Class A Common Stock · 50,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_price: Pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, beginning on June 29, 2021, the RSI Units beneficially owned by the reporting person may be exchanged, subject to certain conditions, for one share of Class A Common Stock of the Issuer. Upon such exchange, an equivalent number of shares of Class V Voting Stock then held by the reporting person will be canceled.

F5 · derivative.exercise_date: Pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, beginning on June 29, 2021, the RSI Units beneficially owned by the reporting person may be exchanged, subject to certain conditions, for one share of Class A Common Stock of the Issuer. Upon such exchange, an equivalent number of shares of Class V Voting Stock then held by the reporting person will be canceled.

F5 · derivative.expiration_date: Pursuant to the Amended and Restated Limited Partnership Agreement of RSI LP, beginning on June 29, 2021, the RSI Units beneficially owned by the reporting person may be exchanged, subject to certain conditions, for one share of Class A Common Stock of the Issuer. Upon such exchange, an equivalent number of shares of Class V Voting Stock then held by the reporting person will be canceled.

F2 · ownership.nature: The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that such securities are beneficially owned by the Reporting Person for Section 16 or any other purpose.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.