United States $100 Billion Buyout Firm Hg, General Atlantic & Tidemark to Buy Enterprise Financial Software Company OneStream for $6.4 Billion in All-Cash-Deal Representing +31% Premium to Closing Price (5/1/26), OneStream Founded in 2012 by Tom Shea, Bob Powers & Craig Colby
8th January | Hong Kong
United States buyout firm Hg ($100 billion AUM), General Atlantic & Tidemark have announced to buy enterprise financial software company OneStream for $6.4 billion in all-cash-deal representing +31% premium to closing price (5/1/26). OneStream was founded in 2012 by Tom Shea, Bob Powers & Craig Colby. Announcement (6/1/26): “OneStream the leading enterprise Finance management platform that modernizes the Office of the CFO by unifying core Finance and operational functions – including financial close, consolidation, reporting, planning and forecasting – today announced that it has entered into a definitive agreement to be acquired by Hg, a leading investor in software, services and data businesses. The all-cash transaction values OneStream at approximately $6.4 billion in equity value. Hg will be OneStream’s majority voting shareholder. General Atlantic, a leading global investor, will also be a significant minority investor alongside Tidemark, a leading technology investment firm. Under the terms of the agreement, OneStream shareholders will receive $24.00 per share in cash. The per-share purchase price represents a 31% premium to OneStream’s closing share price on January 5, 2026 and a 27% premium to its volume-weighted average share price over the 30-trading day period ending the same date. An entity controlled by Hg will acquire all outstanding shares, including those shares owned by investment funds managed by KKR, a leading global investment firm, which took OneStream public in 2024. The transaction is expected to close in the first half of 2026. Upon completion of the transaction, OneStream will become a privately held company. Hg will invest in OneStream from its Saturn Fund. Transaction Details – The transaction, which has been unanimously approved by OneStream’s Board of Directors, is expected to close in the first half of 2026, subject to the receipt of required regulatory approvals and the satisfaction of other customary closing conditions. KKR, in its capacity as the holder of a majority of OneStream’s voting power, has approved the transaction. No further approval of OneStream’s stockholders is required or will be sought. Upon completion of the transaction, OneStream’s Class A common stock will no longer be listed or traded on any public stock exchange. Mr. Shea will continue to serve as CEO, and the current leadership team will remain in place. OneStream will maintain its headquarters in Birmingham, Michigan.”
“ United States $100 Billion Buyout Firm Hg, General Atlantic & Tidemark to Buy Enterprise Financial Software Company OneStream for $6.4 Billion in All-Cash-Deal Representing +31% Premium to Closing Price (5/1/26), OneStream Founded in 2012 by Tom Shea, Bob Powers & Craig Colby “
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OneStream – OneStream is how today’s Finance teams can go beyond just reporting on the past and Take Finance Further by steering the business to the future. It’s the leading enterprise Finance platform that unifies financial and operational data, embeds AI for better decisions and productivity and empowers the CFO to become a critical driver of business strategy and execution. We deliver a comprehensive cloud-based platform to modernize the Office of the CFO. Our Digital Finance Cloud unifies core financial and broader operational data and processes and embeds AI for better planning and forecasting, with an extensible architecture, so customers can adopt and develop new solutions, achieving greater value as their business needs evolve. With over 1,700 customers, including 18% of the Fortune 500, a strong ecosystem of go-to-market, implementation, and development partners and 1,600 employees, our vision is to be the operating system for modern Finance. To learn more, visit onestream.com.
Hg – Hg is the leading investor in European and transatlantic software and services businesses. Hg helps to build sector-leading enterprises that supply critical software applications or workflow services to deliver intelligent automation for their customers. Hg takes an active approach to value creation, combining deep end-market knowledge with world class operational resources to provide compelling support to entrepreneurial leaders looking to scale enduring businesses. With a vast European network and strong presence across North America, Hg has approximately $100 billion in assets under management and more than 400 employees. Hg’s portfolio spans more than 55 companies worth over $185 billion in aggregate enterprise value, employing more than 130,000 people and consistently growing revenues at more than 20% annually.
General Atlantic – General Atlantic is a leading global investor with more than four and a half decades of experience providing capital and strategic support for over 830 companies throughout its history. Established in 1980, General Atlantic continues to be a dedicated partner to visionary founders and investors seeking to build dynamic businesses and create long-term value. The firm leverages its patient capital, operational expertise, and global platform to support a diversified investment platform spanning Growth Equity, Credit, Climate, and Sustainable Infrastructure strategies. General Atlantic manages approximately $118 billion in assets under management, inclusive of all strategies, as of September 30, 2025, with more than 900 professionals in 20 countries across five regions.
Tidemark – Tidemark is a growth equity firm purpose-built to help companies win and scale. Tidemark is powered by a community of investors, entrepreneurs, and operators who are energized by ideas, a love of competition, and the drive to give back. We give 10% of our profits to our foundation, Tidemark10, to support the communities we serve.
United States $100 Billion Buyout Firm Hg, General Atlantic & Tidemark to Buy Enterprise Financial Software Company OneStream for $6.4 Billion in All-Cash-Deal Representing +31% Premium to Closing Price (5/1/26), OneStream Founded in 2012 by Tom Shea, Bob Powers & Craig Colby
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