RSI

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.

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.

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.

SEC source: 0001373161-26-000006 · wk-form4_1778105611.xml · derivative · entry 10

BLUHM NEIL · CIK 0001373161 · Director · Executive Chairman · 10% owner

NGB 2013 GRANDCHILDREN'S DYNASTY TRUST · CIK 0001839329 · Director · Executive Chairman · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By NGB 2013 Grandchildren's Dynasty Trust

Disclosed balance after: 97,770,780

Underlying: Class A Common Stock · 9,141,000 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.

F2 · ownership.nature: These securities are held by NGB 2013 Grandchildren's Dynasty Trust (the "NGB Dynasty Trust"). The reporting person is the grantor and trustee of NGB Dynasty Trust and exercises sole voting and investment control over the securities held thereby. Mr. Bluhm may be deemed to be the beneficial owner of securities held by the NGB Dynasty Trust to the extent that he or his immediate family members are beneficiaries of such trust.

SEC source: 0001373161-26-000006 · wk-form4_1778105611.xml · nonDerivative · entry 3

BLUHM NEIL · CIK 0001373161 · Director · Executive Chairman · 10% owner

NGB 2013 GRANDCHILDREN'S DYNASTY TRUST · CIK 0001839329 · Director · Executive Chairman · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By NGB 2013 Grandchildren's Dynasty Trust

Disclosed balance after: 0

F2 · ownership.nature: These securities are held by NGB 2013 Grandchildren's Dynasty Trust (the "NGB Dynasty Trust"). The reporting person is the grantor and trustee of NGB Dynasty Trust and exercises sole voting and investment control over the securities held thereby. Mr. Bluhm may be deemed to be the beneficial owner of securities held by the NGB Dynasty Trust to the extent that he or his immediate family members are beneficiaries of such trust.

SEC source: 0001373161-26-000006 · wk-form4_1778105611.xml · nonDerivative · entry 2

BLUHM NEIL · CIK 0001373161 · Director · Executive Chairman · 10% owner

NGB 2013 GRANDCHILDREN'S DYNASTY TRUST · CIK 0001839329 · Director · Executive Chairman · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By NGB 2013 Grandchildren's Dynasty Trust

Disclosed balance after: 97,770,780

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: These securities are held by NGB 2013 Grandchildren's Dynasty Trust (the "NGB Dynasty Trust"). The reporting person is the grantor and trustee of NGB Dynasty Trust and exercises sole voting and investment control over the securities held thereby. Mr. Bluhm may be deemed to be the beneficial owner of securities held by the NGB Dynasty Trust to the extent that he or his immediate family members are beneficiaries of such trust.

SEC source: 0001373161-26-000006 · wk-form4_1778105611.xml · nonDerivative · entry 1

BLUHM NEIL · CIK 0001373161 · Director · Executive Chairman · 10% owner

NGB 2013 GRANDCHILDREN'S DYNASTY TRUST · CIK 0001839329 · Director · Executive Chairman · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By NGB 2013 Grandchildren's Dynasty Trust

Disclosed balance after: 9,141,000

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 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: These securities are held by NGB 2013 Grandchildren's Dynasty Trust (the "NGB Dynasty Trust"). The reporting person is the grantor and trustee of NGB Dynasty Trust and exercises sole voting and investment control over the securities held thereby. Mr. Bluhm may be deemed to be the beneficial owner of securities held by the NGB Dynasty Trust to the extent that he or his immediate family members are beneficiaries of such trust.

SEC source: 0001834345-26-000020 · wk-form4_1778105866.xml · derivative · entry 16

SCHWARTZ RICHARD TODD · CIK 0001834345 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Irrevocable Trust

Disclosed balance after: 701,902

Underlying: Class A Common Stock · 355,000 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.

F4 · 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.

F4 · 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.

F4 · 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.

SEC source: 0001834345-26-000020 · wk-form4_1778105866.xml · derivative · entry 15

SCHWARTZ RICHARD TODD · CIK 0001834345 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 701,902

Underlying: Class A Common Stock · 355,000 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.

F4 · 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.

F4 · 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.

F4 · 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.

SEC source: 0001834345-26-000020 · wk-form4_1778105866.xml · nonDerivative · entry 6

SCHWARTZ RICHARD TODD · CIK 0001834345 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Irrevocable Trust

Disclosed balance after: 0

SEC source: 0001834345-26-000020 · wk-form4_1778105866.xml · nonDerivative · entry 5

SCHWARTZ RICHARD TODD · CIK 0001834345 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 0

SEC source: 0001834345-26-000020 · wk-form4_1778105866.xml · nonDerivative · entry 4

SCHWARTZ RICHARD TODD · CIK 0001834345 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Irrevocable Trust

Disclosed balance after: 701,902

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.

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.

SEC source: 0001834345-26-000020 · wk-form4_1778105866.xml · nonDerivative · entry 3

SCHWARTZ RICHARD TODD · CIK 0001834345 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Irrevocable Trust

Disclosed balance after: 355,000

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 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.

SEC source: 0001834345-26-000020 · wk-form4_1778105866.xml · nonDerivative · entry 2

SCHWARTZ RICHARD TODD · CIK 0001834345 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 701,902

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.

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.

SEC source: 0001834345-26-000020 · wk-form4_1778105866.xml · nonDerivative · entry 1

SCHWARTZ RICHARD TODD · CIK 0001834345 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 355,000

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 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.

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.

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.

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.

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

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.

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.

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.

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.

SEC source: 0001588894-26-000010 · wk-form4_1778106036.xml · nonDerivative · entry 1

Sauers Kyle · CIK 0001588894 · Chief Financial Officer · President

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 654,258

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

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.

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.

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.

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.

SEC source: 0001834345-26-000018 · wk-form4_1777673429.xml · derivative · entry 12

SCHWARTZ RICHARD TODD · CIK 0001834345 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 1,056,902

Underlying: Class A Common Stock · 55,556 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.

SEC source: 0001834345-26-000018 · wk-form4_1777673429.xml · derivative · entry 11

SCHWARTZ RICHARD TODD · CIK 0001834345 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Irrevocable Trust

Disclosed balance after: 1,056,902

Underlying: Class A Common Stock · 55,556 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.

SEC source: 0001834345-26-000018 · wk-form4_1777673429.xml · derivative · entry 10

SCHWARTZ RICHARD TODD · CIK 0001834345 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 5,278,885

Underlying: Class A Common Stock · 47,223 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.

SEC source: 0001834345-26-000018 · wk-form4_1777673429.xml · nonDerivative · entry 9

SCHWARTZ RICHARD TODD · CIK 0001834345 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 0

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 $27.69 to $28.52 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.

SEC source: 0001834345-26-000018 · wk-form4_1777673429.xml · nonDerivative · entry 8

SCHWARTZ RICHARD TODD · CIK 0001834345 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Irrevocable Trust

Disclosed balance after: 0

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 $27.69 to $28.52 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.

SEC source: 0001834345-26-000018 · wk-form4_1777673429.xml · nonDerivative · entry 7

SCHWARTZ RICHARD TODD · CIK 0001834345 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 374,036

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 $27.69 to $28.52 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.

SEC source: 0001834345-26-000018 · wk-form4_1777673429.xml · nonDerivative · entry 6

SCHWARTZ RICHARD TODD · CIK 0001834345 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 1,056,902

F1 · price: On May 1, 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 1, 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 · 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.

SEC source: 0001834345-26-000018 · wk-form4_1777673429.xml · nonDerivative · entry 5

SCHWARTZ RICHARD TODD · CIK 0001834345 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 55,556

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 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.

SEC source: 0001834345-26-000018 · wk-form4_1777673429.xml · nonDerivative · entry 4

SCHWARTZ RICHARD TODD · CIK 0001834345 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Irrevocable Trust

Disclosed balance after: 1,056,902

F1 · price: On May 1, 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 1, 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 · 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.

SEC source: 0001834345-26-000018 · wk-form4_1777673429.xml · nonDerivative · entry 3

SCHWARTZ RICHARD TODD · CIK 0001834345 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By Irrevocable Trust

Disclosed balance after: 55,556

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 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.

SEC source: 0001834345-26-000018 · wk-form4_1777673429.xml · nonDerivative · entry 2

SCHWARTZ RICHARD TODD · CIK 0001834345 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 5,278,885

F1 · price: On May 1, 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 1, 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 · 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.

SEC source: 0001834345-26-000018 · wk-form4_1777673429.xml · nonDerivative · entry 1

SCHWARTZ RICHARD TODD · CIK 0001834345 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 421,259

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 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.

SEC source: 0001835729-26-000008 · wk-form4_1777501337.xml · derivative · entry 5

GOLD JUDITH · CIK 0001835729 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Daniel S. Kotcher Revocable Trust u/t/a dated December 7, 2012

Disclosed balance after: 75,083

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.

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.

F2 · ownership.nature: Consists of securities held by the Daniel S. Kotcher Revocable Trust u/t/a dated December 7, 2012 (the "Kotcher Trust"). The reporting person is a beneficiary of the Kotcher Trust and may be deemed to have a beneficial ownership interest with respect to the securities held thereby, and the reporting person's husband, Daniel Kotcher, serves as trustee of the Kotcher Trust and exercises sole voting and investment control over such securities. The reporting person disclaims beneficial ownership of the securities held by the Kotcher Trust except to the extent of her actual pecuniary interest therein.

SEC source: 0001835729-26-000008 · wk-form4_1777501337.xml · nonDerivative · entry 3

GOLD JUDITH · CIK 0001835729 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Daniel S. Kotcher Revocable Trust u/t/a dated December 7, 2012

Disclosed balance after: 0

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 $26.51 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.

F2 · ownership.nature: Consists of securities held by the Daniel S. Kotcher Revocable Trust u/t/a dated December 7, 2012 (the "Kotcher Trust"). The reporting person is a beneficiary of the Kotcher Trust and may be deemed to have a beneficial ownership interest with respect to the securities held thereby, and the reporting person's husband, Daniel Kotcher, serves as trustee of the Kotcher Trust and exercises sole voting and investment control over such securities. The reporting person disclaims beneficial ownership of the securities held by the Kotcher Trust except to the extent of her actual pecuniary interest therein.

SEC source: 0001835729-26-000008 · wk-form4_1777501337.xml · nonDerivative · entry 2

GOLD JUDITH · CIK 0001835729 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Daniel S. Kotcher Revocable Trust u/t/a dated December 7, 2012

Disclosed balance after: 75,083

F1 · balance_after: On April 29, 2026, the reporting person's spouse 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's spouse 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: Consists of securities held by the Daniel S. Kotcher Revocable Trust u/t/a dated December 7, 2012 (the "Kotcher Trust"). The reporting person is a beneficiary of the Kotcher Trust and may be deemed to have a beneficial ownership interest with respect to the securities held thereby, and the reporting person's husband, Daniel Kotcher, serves as trustee of the Kotcher Trust and exercises sole voting and investment control over such securities. The reporting person disclaims beneficial ownership of the securities held by the Kotcher Trust except to the extent of her actual pecuniary interest therein.

SEC source: 0001835729-26-000008 · wk-form4_1777501337.xml · nonDerivative · entry 1

GOLD JUDITH · CIK 0001835729 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Daniel S. Kotcher Revocable Trust u/t/a dated December 7, 2012

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 April 29, 2026, the reporting person's spouse 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's spouse being canceled.

F2 · ownership.nature: Consists of securities held by the Daniel S. Kotcher Revocable Trust u/t/a dated December 7, 2012 (the "Kotcher Trust"). The reporting person is a beneficiary of the Kotcher Trust and may be deemed to have a beneficial ownership interest with respect to the securities held thereby, and the reporting person's husband, Daniel Kotcher, serves as trustee of the Kotcher Trust and exercises sole voting and investment control over such securities. The reporting person disclaims beneficial ownership of the securities held by the Kotcher Trust except to the extent of her actual pecuniary interest therein.

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.

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.

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.

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.

SEC source: 0001834368-26-000010 · wk-form4_1777501095.xml · nonDerivative · entry 1

WIERBICKI PAUL · CIK 0001834368 · Director · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 93,256

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 $26.5 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.

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.