Rush Street Interactive Inc

First Amendment to the RSILP A&R LPA

On February 24, 2025, the Board approved and directed RSI GP, as the sole general partner of RSILP, to review, negotiate and enter into that certain Amendment No. 1 to the RSILP A&R LPA (the “First Amendment”), and on February

25, 2025, RSI GP entered into the First Amendment. Among other things, the First Amendment amended the definition of “Assumed Tax Rate” to better align with its limited partner base and amended the definition of “Assumed Tax Liability” to account for the carryover of items of loss, deduction, credit and expense previously allocated to the limited partners, allowing them to be carried forward and used to offset income allocated to the limited partners by RSILP for a subsequent taxable year, in accordance with the applicable provisions of the U.S. Internal Revenue Code of 1986, as amended (or comparable provision of state tax law). The foregoing is not a complete description of the First Amendment and is qualified by reference to the full text and terms of the First Amendment, which is filed as Exhibit 10.24 to this Annual Report on Form 10-K and incorporated herein by reference.

Securities Trading Plans of Directors and Executive Officers

During the three months ended December 31, 2024, none of our directors or executive officers adopted orterminated any contract, instruction or written plan for the purchase or sale of the Company’s securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) or any “non-Rule 10b5-1 trading arrangement.”