FELLOW STOCKHOLDERS, With global uncertainty and increasing business complexity, the role of today’s CFO is moredemanding than ever. Our Finance 2035 Initiative, a survey of 2,000 global business leaderson the evolving role of Finance, found that CEOs, Line of Business (LoB) leaders, and investorssee the Office of the CFO becoming far more strategic, with Finance expected to be ‘mastersof everything’ and understand risks and opportunities across the business. At the same time,CFOs participating in the study reported that their ability to take on this broader remit is beinghampered by high data fragmentation across the enterprise and limitations of legacyfinance systems. This problem is precisely what makes OneStream a preferred platform for modernizing Finance.We are unique in our ability to unify financial and operational data and processes on a commonplatform that is powered by artificial intelligence (AI) and extensible to meet the ever-changingand expanding needs of the Office of the CFO — all without adding new technical debt. These factors contributed to making 2024 such a watershed year for OneStream. We achieveda major milestone with our successful IPO, grew total revenue by 31% and subscription revenueby 41% year-over-year, respectively, and now serve more than 1,600 customers, including 17%of the Fortune 500. These results speak to the strength of the OneStream platform and howwe are empowering Finance leaders to modernize and thrive. But it’s not just about the numbers. It’s about the opportunity ahead and solving the unmetneeds of Finance leaders — particularly helping them harness the transformational power ofapplied AI. As expectations rise, Finance teams need smarter, faster ways to see the full pictureof their business and forecast with precision against a constantly shifting landscape. In 2024,we responded to these challenges with one of our most innovative years to date, introducinga dozen innovations, including expanding our SensibleAI™ portfolio and unveiling Genesis, ouradvanced click-to-configure architecture. With SensibleAI, we’re delivering applied AI solutions that unite proven quantitativemachine-learning (ML) and generative AI capabilities into complete solutions that are trusted,secure, and purpose-built for Finance. The introduction of Genesis will help speed and simplifythe ability for customers, partners, and developers to configure, personalize, and innovate onthe OneStream platform. These innovations are designed to unlock additional utility and valuefor customers, build new on-ramps to the OneStream platform, and provide more value andexpansion opportunities within our customer base. Without question, 2024 was a momentous year for OneStream. And, while I’m incredibly proudof what we achieved, I’m even more excited about what lies ahead. Our Finance 2035 Initiative tells us CFOs are laser-focused on modernizing outdated systems,embracing AI, and making bold investments to stay competitive and strategic. Priorities weanticipate will increase under the increasingly volatile and uncertain macro-economic backdrop.With continued innovation and execution, I believe OneStream is well-positioned to meetthe rapidly evolving needs of the Office of the CFO and realize our vision to be the OperatingSystem for Modern Finance. As Chairman and CEO, my priority is to fuel growth by focusing on the right opportunities. We’vebuilt a powerful foundation. The Office of the CFO is rapidly evolving. And we’re investing tomake OneStream the preferred platform for Finance to unify and accelerate insights, efficiency,and results. As we step into 2025, I am confident that we have the right team, the right strategy,and the right platform to fully capitalize on the rising need for companies, governments, andother organizations to modernize financial systems and operations to have the agility to adaptto this rapidly evolving environment. I want to congratulate the global OneStream team — now 1,500+ strong — for their incrediblecommitment, hard work, and continued innovation. I also greatly appreciate the continuedsupport and confidence from my fellow stockholders, as well as OneStream’s partners andcustomers around the world. Thank you for putting your trust in OneStream. We’re just getting started on our mission to help organizations in every industryand geographyTAKE FINANCE FURTHER™. Sincerely, THOMAS SHEA Chairman and Chief Executive Officer UNITED STATESSECURITIES AND EXCHANGE COMMISSIONWASHINGTON, DC 20549FORM 10-K OneStream, Inc. (Exact Name of Registrant as Specified in its Charter) Securities registered pursuant to Section 12(b) of the Act: Securities registered pursuant to Section 12(g) of the Act:None Indicate by check mark if the Registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. YesNo Indicate by check mark whether the Registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act