Financial service provider OneStream Inc. announced today that it will be acquired by an entity controlled by buyout firm Hg in an all-cash transaction that values OneStream at $6.4 billion.

Under the terms of the deal, OneStream shareholders will receive $24 per share, a 31% premium over OneStream’s closing share price as of Jan. 5 and a 27% premium over the average share price in the past 30 trading days. The acquisition deal comes just shy of 18 months since OneStream listed on the Nasdaq through an initial public offering.

Founded in 2010, OneStream offers a corporate performance management solution that helps companies and particularly chief financial officers consolidate, plan, report and analyze financial and operational data from a single environment. The software includes features that speed up common accounting tasks such as reconciliation and also provides analytics features that simulate the impact of future business moves on the bottom line.

Making financial records easier to manage is at the core of the company’s offering. OneStream’s software consolidates accounting-related data from spreadsheets, customer relationship management platforms and other sources for easier access, in a process the company describes as modernizing the “Office of the CFO.”

OneStream also offers a marketplace of additional solutions that can be deployed without complex integrations. The add-ons, which include specialty planning modules or compliance tools, allow organizations to tailor the platform to their specific needs while maintaining one consistent system.

“Today marks a pivotal moment for OneStream and our vision to be the operating system for modern finance,” said Chief Executive Tom Shea. “The Office of the CFO is at a critical AI inflection point and we believe OneStream is well positioned for this shift. Through this partnership, we are able to significantly advance our AI-first go-to-market strategy and expand our Finance AI capabilities at a rapid pace.”

Upon closing of the deal, Hg, through its Saturn Fund, will become OneStream’s majority voting shareholder, while General Atlantic Services Co. LP and Tidemark Capital LLC will hold minority investments.

The transaction, which has been unanimously approved by OneStream’s board, is expected to close in the first half of 2026, subject to the standard regulatory and customary closing conditions.

Image: OneStream