Rush Street Interactive, Inc. (NYSE:RSI) ("RSI"), a leading online casino and sports betting company in the United States and the rest of the Americas, today announced the commencement of an underwritten secondary public offering of its Class A common stock by one or more trusts beneficially owned by Neil Bluhm, RSI's Executive Chairman, Richard Schwartz, RSI's Chief Executive Officer, and Mattias Stetz, RSI's Chief Operating Officer (the "Selling Stockholders"). The Selling Stockholders are offering 10,000,000 shares of RSI's Class A common stock pursuant to a registration statement on Form S-3 (the "Registration Statement") filed with the Securities and Exchange Commission (the "SEC"). The Selling Stockholders are each offering less than 10% of their respective currently owned RSI stock. The Selling Stockholders intend to grant the underwriters a 30-day option to purchase up to an additional 1,500,000 shares of RSI's Class A common stock from the Selling Stockholders. The offering is subject to market conditions, and there can be no assurance as to whether or when the offering may be completed. Each underwriter proposes to offer the Class A common stock to the public at a fixed price, which may be changed at any time without notice.

The Selling Stockholders are offering these shares for personal financial planning and estate planning purposes. Upon completion of the offering, Neil Bluhm and trusts and other entities beneficially owned by him will continue to own over 40% of RSI's stock, remaining RSI's largest shareholder by a significant margin, and will continue to serve as Executive Chairman of RSI's Board of Directors.