Summize, a contract lifecycle management software provider, has raised £36 million in funding from new investors Kennet Partners and Federated Hermes Private Equity, alongside existing investors Maven Capital Partners and YFM Equity Partners. The investment will support the next phase of growth, including expanding product capabilities, the team and its global customer base.
Summize helps in-house legal teams manage contracts within software applications including Microsoft Word, Outlook, Microsoft Teams, Slack, Salesforce and HubSpot. Built on its contract lifecycle management platform, the product applies legal context to contracts to improve accuracy and trust in the contracting process, and extracts insights from financial documents, compliance materials, handbooks and regulatory content so important information appears in the right tools at the right time.
The funding follows five consecutive years of more than 100% ARR growth. Between July and December 2025, Summize grew customer bookings by 92% and increased ARR by 97% year-on-year. During this period, it expanded its U.S. footprint with a new office in San Diego and opened a larger UK office in Manchester to support global headcount growth of 59% over the past year. Customers include Revolut, AMC Networks, SHL Medical, Clearscore, Sigma, Matillion, Groq and multiple U.S. professional sports teams across the NBA, MLB and NFL.
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 at 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 at 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 at 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, Co-founder & CEO of Summize
