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- 46% Monthly-Active-User Growth in the United States and Canada Online Casino Markets -

CHICAGO – October 29, 2025 – 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 financial results for the third quarter ended September 30, 2025.

•Revenue was $277.9 million during the third quarter of 2025, an increase of 20%, compared to $232.1 million during the third quarter of 2024.

•Net income was $14.8 million during the third quarter of 2025, compared to $3.2 million during the third quarter of 2024.

•Adjusted EBITDA1 was $36.0 million during the third quarter of 2025, an increase of 54%, compared to $23.4 million during the third quarter of 2024.

•Adjusted sales and marketing expense1 was $38.1 million during the third quarter of 2025, a decrease of 1% compared to the third quarter of 2024.

•Total Monthly Active Users (“MAU”) in the United States and Canada were approximately 225,000, up 34% year-over-year, and up 46% year-over-year in online casino markets. MAUs in Latin America (which includes Mexico) were approximately 415,000, up 30% year-over-year.

•Average Revenue per Monthly Active User (“ARPMAU”) in the United States and Canada was $365 during the third quarter of 2025, while ARPMAU in Latin America was $27.

Richard Schwartz, Chief Executive Officer of RSI, said, "We’re pleased to report another strong quarter that underscores the resilience of our business model and player-first approach. Our third quarter results demonstrate continued momentum and acceleration of growth across key markets, led by our continued outperformance in the online casino space. Another quarter of record revenue, up 20% year-over-year, marks our tenth consecutive quarter of sequential revenue growth over the prior quarter. This growth was driven by record player acquisition and strong player engagement across our higher-value markets.

“What makes these results particularly compelling is the continued acceleration of growth in North American online casino markets. Delivering exceptional 46% year-over-year MAU growth, our United States and Canada online casino markets recorded the second highest quarterly growth rate since early 2021, achieved off a much larger player base. We've now seen accelerating year-over-year growth in this player base every single month since March, indicating strong underlying momentum that extends well beyond seasonal factors. We also had a record

1 This is a non-GAAP financial measure. Please see “Non-GAAP Financial Measures” for more information about this non-GAAP financial measure and “Reconciliations of GAAP to Non-GAAP Financial Measures” for any applicable reconciliation of the most comparable measure calculated in accordance with GAAP to this non-GAAP financial measure.

quarter as it relates to first-time depositors, beating our prior record by more than 10% while reducing marketing spend compared to the same period last year. This broad-based acceleration, even across our most mature markets validates our strategic approach of focusing on product differentiation and a high-quality customer experience.

“As we look ahead, we remain deeply committed to our player-first approach, delivering exceptional experiences and innovating in ways to drive engagement, positioning us for continued momentum and long-term success.”

RSI is raising its full year ending December 31, 2025 guidance for both revenue and Adjusted EBITDA1. Revenue is expected to be between $1,100 and $1,120 million. At the midpoint of the range, revenue of $1,110 million represents 20% year-over-year growth compared to $924 million of revenue for 2024.

RSI expects Adjusted EBITDA to now be between $147 and $153 million. At the midpoint of the range, Adjusted EBITDA of $150 million represents 62% year-over-year growth compared to $92.5 million of Adjusted EBITDA for 2024.

These guidance ranges are based on certain assumptions, including that (i) only operations in live jurisdictions as of today’s date are included, and (ii) RSI continues to operate in markets in which it is live today under similar tax structures.

RSI will host a conference call and audio webcast today at 6:00 p.m. Eastern Time (5:00 p.m. Central Time), during which management will discuss third quarter results and provide commentary on business performance and its current outlook for 2025. A question-and-answer session will follow the prepared remarks.

The conference call may be accessed by dialing 1-833-470-1428 (Toll Free) or 1-404-975-4839 (Local) or, for international callers, 1-929-526-1599. The conference call access code is 135729.

A live audio webcast of the earnings conference call may be accessed on RSI’s website at ir.rushstreetinteractive.com, along with a copy of this press release and an investor slide presentation. The audio webcast and investor slide presentation will be available on RSI’s investor relations website until at least November 29, 2025.

RSI is a trusted online gaming and sports entertainment company focused on markets in the United States, Canada and Latin America. Through its brands, BetRivers, PlaySugarHouse and RushBet, RSI was an early entrant in many regulated jurisdictions. It currently offers real-money mobile and online operations in fifteen U.S. states: New Jersey, Pennsylvania, Indiana, Colorado, Illinois, Iowa, Michigan, Virginia, West Virginia, Arizona, New York, Louisiana, Maryland, Ohio and Delaware, as well as in the regulated international markets of Colombia, Ontario (Canada), Mexico and Peru. RSI offers, through its proprietary online gaming platform, some of the most popular online casino games and sports betting options in the United States. Founded in 2012 by gaming industry veterans, RSI was named the EGR North America Awards Customer Services Operator of the Year five years in a row (2020-2024), the 2022 EGR North America Awards Operator of the Year and Social Gaming Operator of the Year, and the SBC Latinoamérica Awards 2024 Casino Operator of the Year and 2021 Sportsbook Operator of the Year. RSI was the first U.S.-based online casino and sports betting operator to receive RG Check iGaming Accreditation from the Responsible Gaming Council.

For more information, visit www.rushstreetinteractive.com.

In addition to providing financial measurements based on accounting principles generally accepted in the United States of America (“GAAP”), this press release includes certain financial measures that are not prepared in accordance with GAAP, including Adjusted EBITDA, Adjusted Operating Costs and Expenses, Adjusted Earnings Per Share, Adjusted Net Income and Adjusted Weighted Average Common Shares Outstanding, each of which is a non-GAAP performance measure that RSI uses to supplement its results presented in accordance with GAAP. A reconciliation of each such non-GAAP financial measure to the most directly comparable GAAP financial measure can be found below. RSI believes that presentation of these non-GAAP financial measures provides useful information to investors regarding RSI’s results of operations and operating performance, as they are similar to measures reported by its public competitors and are regularly used by securities analysts, institutional investors and other interested parties in analyzing operating performance and prospects. These non-GAAP financial measures are not intended to be considered in isolation or as a substitute for any GAAP financial measures and, as calculated, may not be comparable to other similarly titled measures of performance of other companies in other industries or within the same industry.

By providing full year 2025 Adjusted EBITDA guidance, RSI provided its expectation of a forward-looking non-GAAP financial measure. Information reconciling full year 2025 Adjusted EBITDA to its most directly comparable GAAP financial measure, net income (loss), is unavailable to RSI without unreasonable effort due to, among other things, the inherent difficulty in forecasting and quantifying the comparable GAAP measure and the applicable adjustments and other amounts that would be necessary for such a reconciliation, and certain of these amounts are outside of RSI’s control and may be subject to high variability or complexity. Preparation of such reconciliations would also require a forward-looking balance sheet, statement of operations and statement of cash flows, prepared in accordance with GAAP, and such forward-looking financial statements are unavailable to RSI without unreasonable effort. RSI provides a range for its Adjusted EBITDA forecast that it believes will be achieved; however, RSI cannot provide any assurance that it can predict all of the components of the Adjusted EBITDA calculation. RSI provides a forecast for Adjusted EBITDA because it believes that Adjusted EBITDA, when viewed with RSI’s results calculated in accordance with GAAP, provides useful information for the reasons noted herein. However, Adjusted EBITDA is not a measure of financial performance or liquidity under GAAP and, accordingly, should not be considered as an alternative to net income (loss) or cash flow from operating activities or as an indicator of operating performance or liquidity.

RSI defines Adjusted EBITDA as net income (loss) before interest, income taxes, depreciation and amortization, share-based compensation, adjustments for certain one-time or non-recurring items and other adjustments. Adjusted EBITDA excludes certain expenses that are required in accordance with GAAP because certain expenses are either non-cash or are not related to our underlying business performance.

RSI defines Adjusted Operating Costs and Expenses as RSI’s GAAP operating costs and expenses adjusted to exclude the impacts of share-based compensation, certain one-time or non-recurring items and other adjustments. Adjusted Operating Costs and Expenses excludes certain expenses that are required in accordance with GAAP because certain expenses are either non-cash or are not related to our underlying business performance.

RSI defines Adjusted Earnings Per Share as Adjusted Net Income divided by Adjusted Weighted Average Common Shares Outstanding. Adjusted Net Income is defined as net income (loss) attributable to Rush Street Interactive, Inc. as used in the diluted earnings (loss) per share calculations, adjusted for the reallocation of net loss attributable to non-controlling interests, share-based compensation, certain one-time or non-recurring items and other adjustments. Adjusted Weighted Average Common Shares Outstanding is defined as the weighted average number of common shares outstanding as used in the diluted earnings (loss) per share calculation, and in periods of Adjusted Net Income, adjusted for the assumed conversion of the non-controlling interest’s Rush Street Interactive, LP Class A units to Class A common stock of RSI on a one-to-one-basis and incremental shares from assumed conversion of stock options and restricted stock units not otherwise included in the diluted earnings (loss) per share calculation.

RSI includes these non-GAAP financial measures because management uses them to evaluate RSI’s core operating performance and trends and to make strategic decisions regarding the allocation of capital and new investments. Management believes that these non-GAAP financial measures provide investors with useful information on RSI’s past financial and operating performance, enable comparison of financial results from period-to-period where certain items may vary independent of business performance, and allow for greater transparency with respect to metrics used by RSI’s management in operating our business. Management also believes these non-GAAP financial measures are useful in evaluating our operating performance compared to that of other companies in our industry, as these metrics generally eliminate the effects of certain items that may vary from company to company for reasons unrelated to overall operating performance.

RSI provides certain key metrics, including MAUs and ARPMAU, in this press release. RSI defines MAUs as the number of unique users per month who have placed at least one real-money bet across one or more of our online casino, poker, or online sports betting offerings, and it defines ARPMAU as average revenue for the applicable period divided by the average MAUs for the same period.

The numbers RSI uses to calculate MAUs and ARPMAU are based on internal RSI data. While these numbers are based on what RSI believes to be reasonable judgments and estimates of its customer base for the applicable period of measurement, there are inherent challenges in measuring usage and engagement with respect to RSI’s online offerings across its customer base. Such challenges and limitations may also affect RSI’s understanding of certain details of its business. In addition, RSI’s key metrics and related estimates, including the definitions and calculations of the same, may differ from estimates published by third parties or from similarly-titled metrics of its competitors due to differences in operations, offerings, methodology and access to information. RSI regularly reviews, and may adjust its processes for calculating, its internal metrics to improve their accuracy.

This press release includes "forward-looking statements" within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995. RSI's actual results may differ from their expectations, estimates and projections and consequently, you should not rely on these forward-looking statements as predictions of future events. Words such as "expect," "estimate," "project," "budget," "forecast," "anticipate," "intend," "plan," "may," "will," "could," "should," "believes," "predicts," "potential," “propose”, "continue," and similar expressions are intended to identify such forward-looking statements.

These forward-looking statements include, without limitation, statements regarding revenue and Adjusted EBITDA guidance, RSI’s future results of operations, financial condition, cash flows or profitability (whether on a GAAP or non-GAAP basis), currency fluctuations, RSI’s strategic plans and focus, anticipated launches or withdrawals of RSI’s current or new offerings in existing or future jurisdictions, player growth and engagement, product initiatives, outcomes of current or future regulatory developments and the objectives of management for future operations. These forward-looking statements involve significant risks and uncertainties that could cause the actual results to differ materially from the expected results. Most of these factors are outside RSI's control and are difficult to predict. Factors that may cause such differences include, without limitation: changes in applicable laws and regulations, applicable taxes and tax rates; RSI’s ability to manage and sustain growth; RSI’s ability to execute its business plan, meet its projections and obtain relevant market access and/or gaming licenses; unanticipated product or service delays; general economic and market conditions impacting the demand for RSI’s products and services; economic and market conditions in the gaming, entertainment and leisure industry in the markets in which RSI operates; the potential adverse effects of general economic conditions, inflation and interest rates and unemployment on RSI’s liquidity, operations and personnel; and other risks and uncertainties indicated from time to time in RSI's filings with the SEC. RSI cautions that the foregoing list of factors is not exclusive. RSI cautions readers not to place undue reliance upon any forward-looking statements, which speak only as of the date made. RSI does not undertake or accept any obligation or undertaking to release publicly any updates or revisions to any forward-looking statements to reflect any change in its expectations or any change in events, conditions or circumstances on which any such statement is based, except as required by law.

Lisa Johnson

lisa@lisajohnsoncommunications.com

ir@rushstreetinteractive.com

1Non-GAAP Operating Costs and Expense Adjustments include Share-based compensation expense.