Rush Street Interactive, Inc.

Cautionary Note Regarding Forward-Looking Statements

This Quarterly Report on Form 10-Q (this “Report”) contains forward-looking statements within the meaning of the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995, as amended, that reflect future plans, estimates, beliefs and expected performance. The forward-looking statements depend upon events, risks and uncertainties that may be outside of our control. The words “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “intends,” “may,” “might,” “plan,” “possible,” “potential,” “predict,” “project,” “should,” “would” and similar expressions may identify forward-looking statements, but the absence of these words does not mean that a statement is not forward-looking. Any statements contained herein that are not statements of historical fact may be forward-looking statements.

Our projections, including for revenues, market share, expenses and profitability, are subject to significant risks, assumptions, estimates and uncertainties. You are cautioned that our business and operations are subject to a variety of risks and uncertainties, many of which are beyond our control, and, consequently, our actual results may differ materially from those projected.

Factors that could cause or contribute to such differences include, but are not limited to, the following:

•competition in the online casino, online sports betting and retail sports betting (i.e., such as within a bricks-and-mortar casino) industries is intense and, as a result, we may fail to attract and/or retain customers, which may negatively impact our operations, growth prospects and financial condition;

•economic downturns, such as recessions, inflation, and political and market conditions beyond our control, including a reduction in consumer discretionary spending, tariffs and trade wars, and sports leagues shortening, delaying or cancelling parts of their seasons or certain events due to external factors such as pandemics or international conflicts, could adversely affect our business, financial condition, results of operations and prospects;

•our growth prospects may suffer if we are unable to develop or maintain competitive offerings, if we fail to pursue additional offerings, if we lose any of our executives or other key employees or if we are unable to scale and support our information technology and other systems and platforms to meet the Company’s needs;

•our business is subject to a variety of U.S. and foreign laws (including the laws of Canada, Colombia, Mexico and Peru, where we have business operations), many of which are unsettled and still developing, and our growth prospects depend on the legal status of real-money gaming in various jurisdictions;

•failure to comply with regulatory requirements or, as necessary or appropriate, successfully obtain a license or permit applied for could adversely impact our ability to comply with licensing and regulatory requirements or to obtain or maintain licenses in other jurisdictions, or could cause financial institutions, online platforms, vendors and distributors to stop providing services to us;

•we rely on information technology and other systems and platforms (including reliance on third-party providers to validate the identity and location of our customers and to process customer deposits and withdrawals), and any breach or disruption of such systems or platforms could compromise our networks and the information stored there could be accessed, disclosed, lost, corrupted or stolen;

•until fairly recently, we have had a history of losses (calculated in accordance with accounting principles generally accepted in the United States) and may incur losses in the future;

•certain of our officers and directors may allocate their time to other businesses and potentially have conflicts of interest with our business;

•we license certain trademarks and domain names from Rush Street Gaming, LLC (“RSG”) and its affiliates, and RSG’s and its affiliates’ use of such trademarks and domain names, or failure to protect or enforce our intellectual property rights, could harm our business, financial condition, results of operations and prospects;

•we currently, and will likely continue to, rely on licenses and service agreements to use the intellectual property rights and technology of related or third parties that are incorporated into or used in our products and services;

•the timing, amount, duration and utilization of the Stock Repurchase Program (as defined below); and

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•other factors described in our Annual Report on Form 10-K for our most recently completed fiscal year, including the “Business”, “Risk Factors,” “Management's Discussion and Analysis of Financial Condition and Results of Operations,” and “Quantitative and Qualitative Disclosures about Market Risk” sections, as well as described in our other filings with the SEC, such as this Report, our other Quarterly Reports on Form 10-Q and our Current Reports on Form 8-K.

Due to the uncertain nature of these factors, management cannot assess the impact of each factor on the business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements. Any forward-looking statement speaks only as of the date on which such statement is made, and we undertake no obligation to update any of these statements to reflect events or circumstances occurring after the date of this Report, unless required by law. New factors may emerge, and it is not possible to predict all factors that may affect our business and prospects.

Limitations of Key Metrics and Other Data

The numbers for our key metrics, which include our monthly active users (“MAUs”) and average revenue per MAU (“ARPMAU”), are calculated using internal company data based on the activity of user accounts. While these numbers are based on what we believe to be reasonable estimates of our user base and activity levels for the applicable period of measurement, there are inherent challenges in measuring usage of our offerings across large online and mobile populations based in numerous jurisdictions. In addition, we continuously seek to improve our estimates of our user base and user activity, and such estimates may change due to improvements or changes in our methodology.

We regularly evaluate these metrics to estimate the number of “duplicate” accounts among our MAUs and remove the effects of such duplicate accounts on our key metrics. A duplicate account is one that a user maintains in addition to his or her principal account. Generally, duplicate accounts arise as a result of users signing up to use more than one of our brands (i.e., BetRivers, PlaySugarHouse and RushBet) or to use our offerings in more than one jurisdiction, for instance when a user lives in New Jersey but works in New York. The estimates of duplicate accounts are based on an internal review of a limited sample of accounts, and we apply significant judgment in making this determination. For example, to identify duplicate accounts we use data signals such as similar IP addresses or usernames. Our estimates may change as our methodologies evolve, including through the application of new data signals or technologies, which may allow us to identify previously undetected duplicate accounts and may improve our ability to evaluate a broader population of our users. Duplicate accounts are very difficult to measure, and it is possible that the actual number of duplicate accounts may vary significantly from our estimates.

Our data limitations may affect our understanding of certain details of our business. We regularly review our processes for calculating these metrics, and from time to time we may discover inaccuracies in our metrics or make adjustments to improve their accuracy, including adjustments that may result in the recalculation of our historical metrics. We believe that any such inaccuracies or adjustments are immaterial unless otherwise stated. In addition, our key metrics and related information and estimates, including the definitions and calculations of the same, may differ from those published by third parties or from similarly titled metrics of our competitors due to differences in operations, offerings, methodology and access to information.

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