OneStream has completed its acquisition by Hg in an all-cash transaction valued at approximately $6.4 billion, marking a significant shift as the finance software platform transitions to private ownership. Minority investors in the deal include General Atlantic and Tidemark.
With the transaction finalized, OneStream’s Class A common stock has ceased trading on the NASDAQ, and shareholders will receive $24.00 per share in cash under the terms of the agreement. The deal received shareholder approval along with all required regulatory clearances.
OneStream will continue to operate under its existing leadership, with founder and CEO Tom Shea remaining at the helm. The company, headquartered in Birmingham, Michigan, provides a cloud-based platform that unifies financial and operational data, helping finance teams manage processes such as financial close, consolidation, reporting, planning, and forecasting. The platform increasingly integrates artificial intelligence capabilities to support decision-making and productivity.
The acquisition comes after a period of strong growth for OneStream, including a significant increase in adoption of its AI-driven solutions. The company now serves over 1,800 customers, including a notable share of Fortune 500 companies, and aims to position itself as a central operating system for modern finance functions.
Hg, which focuses on investing in technology and services businesses across Europe and North America, highlighted OneStream’s role in the evolving finance AI landscape. The firm manages over $110 billion in assets and has a track record of scaling enterprise software platforms. With this acquisition, Hg is expected to support OneStream’s global expansion and continued investment in AI capabilities.
Support: Advisors on the transaction included J.P. Morgan Securities and Centerview Partners for OneStream, while Goldman Sachs served as exclusive financial advisor to Hg. Legal counsel and diligence providers from multiple firms supported both sides of the deal.
KEY QUOTES:
“Following an exceptional year of growth, including more than doubling our AI customers year over year in 2025, today’s news marks an exciting next step for OneStream. We believe the leaders in Finance AI will be defined over the next 24 to 36 months, and we are making deliberate, long-term decisions to lead at this critical inflection point. Our strategy, leadership, and commitment to customers and partners remain at the center of this. With Hg’s partnership, we are well positioned to accelerate innovation, scale globally, and deliver even greater value to Finance leaders around the world.”
Tom Shea, Founder And CEO, OneStream
“We see a tremendous opportunity with OneStream and their vision to be the operating system for Modern Finance. There is a fundamental shift in how companies must deliver value in the age of AI. OneStream’s powerful Finance AI differentiation brings AI and Agentic AI solutions to a company’s contextualized business logic, making it a key player in the Finance AI sector. This, coupled with an already strong global customer base and clear vision, makes OneStream a critical addition to our Hg team and we look forward to helping them accelerate innovation and growth.”
Joe Jefferies, Partner, Hg
“We’re excited to be a part of OneStream’s next phase of growth through this acquisition. We invest in category leaders, with strong platforms and long-term growth potential. OneStream continues to lead Finance AI and is uniquely positioned for tremendous growth in the future. We’re excited to be a part of their continued expansion, innovation and value creation.”
Alan Cline, Partner And Head Of North America, Hg
