Summize, an AI Contract Lifecycle Management (CLM) software provider, has secured a $50 million investment to fuel its next phase of growth, expand globally, and accelerate product development in AI-powered contract intelligence. The financing included participation from existing investors Maven Capital Partners and YFM Equity Partners, alongside new backers Kennet Partners and Federated Hermes Private Equity.
The company said the investment comes after five consecutive years of ARR growth exceeding 100% as it scaled internationally. Summize reported that in the last six months of 2025, from July through December, it grew customer bookings by 92% and ARR by 97% year over year.
Summize has also been expanding its physical footprint and headcount as it pushes deeper into the U.S. and continues building in the U.K. The company noted it opened a new office in San Diego in late 2025 to support West Coast customers and moved into a new, larger U.K. office in Manchester. Over the past year, Summize said global team headcount grew 59%. Customers cited by the company include Revolut, AMC Networks, SHL Medical, Clearscore, Sigma, Matillion, and Groq, as well as multiple U.S. professional sports teams across the NBA, MLB, and NFL.
Positioned as an embedded CLM platform, Summize enables in-house legal teams to manage contracts within the tools they already use. The company said its workflows are available in applications such as Microsoft Word, Outlook, Microsoft Teams, Slack, Salesforce, and HubSpot, aiming to improve speed, accuracy, and collaboration during drafting, review, and approval.
Summize also described an expanded scope beyond traditional CLM, using AI to extract insights from a broader set of business and governance materials. The company said it applies legal context to support trusted contracting outcomes and can surface knowledge from financial documents, compliance materials, handbooks, and regulatory content directly within everyday work environments.
Founded in 2018, Summize is headquartered in Manchester, U.K., with U.S. offices in Boston and San Diego. The company positions its platform as a self-service CLM system designed to unite legal teams and business stakeholders across the full contract lifecycle, emphasizing native embedding in common collaboration and productivity tools.
Support: Canaccord Genuity worked as the exclusive financial advisor to the company and its shareholders, with Squire Patton Boggs serving as legal advisor and BDO providing finance and tax advice.
KEY QUOTES
“Summize’s proven performance, clear market differentiation, and long-term vision for AI-powered contract management make it a disruptive CLM player in a crowded market.”
“Summize has an incredible track record of consistent growth as customers love its embedded approach and ability to bring the power of AI and CLM directly into the tools that they already use on a daily basis.”
Alex Taylor-Harris, Director, Kennet Partners
“The Summize approach to innovation, its strong leadership team, and impressive company culture make it a strong investment. From its roots in summarizing contracts, the company has expanded its capabilities rapidly to become a cutting-edge Contract Lifecycle Management solution that has attracted global clients. With an exciting roadmap and big, future ideas, we’re looking forward to the next phase of growth and continued success with Summize.”
Jeremy Thompson, Partner, Maven Capital
“The Summize AI-powered experience offers a sophisticated approach to contracting that legal teams are easily adopting and using daily. Customers experience an incredible ROI in a short amount of time and benefit from the embedded experience of Summize within their existing collaboration tools. In addition, Summize’s strong foundation in AI and its ability to contextualize knowledge are designed to scale beyond core CLM use cases and into other areas of a company’s business, making this a strategic AI investment that scales beyond legal.”
Mike Clarke, Partner, YFM Equity
“We founded Summize to make contracts easier to understand and the contracting process more efficient by complementing how modern teams work. This new $50 million investment underlines our differentiated user experience and ability to design innovative, trusted AI solutions for legal teams and the wider business. With the support of our new and existing investors, we will continue to scale the business by focusing on our intuitive user experience, ongoing AI innovation, and expanding our exceptional team to support our growing number of global customers.”
Tom Dunlop, CEO and Co-Founder, Summize
