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Summize has raised USD $50 million as it expands its AI-driven contract management software for in-house legal teams in the UK and the US.
The Manchester-based company, which also has operations in Boston and San Diego, said the investment included backing from existing investors Maven Capital Partners and YFM Equity Partners. It also brought in new investors, Kennet Partners and Federated Hermes Private Equity.
Summize said it has recorded five consecutive years of more than 100% annual recurring revenue growth. It also reported a sharp uplift in bookings and annual recurring revenue in the second half of 2025.
The company said customer bookings rose 92% between July and December 2025. It reported annual recurring revenue rose 97% year over year.
Investor group
Summize operates in the contract lifecycle management market, which has attracted investment as businesses increase their use of automation for legal and procurement work. The company positioned its product around integration with common workplace and CRM tools.
Summize said it embeds contract workflows inside software used by business teams. It listed Microsoft Word, Outlook and Microsoft Teams among its integrations. It also cited Slack, Salesforce and HubSpot.
The platform uses AI for contract-related tasks. Summize said it uses agentic AI and applies legal context. It also stated that it uses AI to extract insights from financial documents, compliance materials, handbooks, and regulatory content.
Kennet Partners described Summize as operating in a competitive contract management tool market. The firm pointed to product differentiation and growth.
"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," said Alex Taylor-Harris, Director, Kennet Partners.
"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," said Taylor-Harris.
Customer base
Summize said customers include Revolut and AMC Networks. It is also known as SHL Medical, Clearscore, Sigma, Matillion, and Groq. The company said it works with professional sports teams across the NBA, MLB and NFL.
Summize said it opened a new office in San Diego in late 2025. The company linked the move to customer demand on the US West Coast. It also said it expanded its UK presence with a larger office in Manchester.
The company said global headcount grew 59% over the past year. It did not disclose current employee numbers.
Product focus
Summize started with a focus on summarising contracts. Investors said the company has broadened its software over time.
"The Summize approach to innovation, its strong leadership team, and impressive company culture make it a strong investment," said Jeremy Thompson, Partner, Maven Capital.
"From its roots in summarising 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," said Thompson.
YFM Equity Partners highlighted the software's adoption in daily workflows. It also pointed to what it described as potential use beyond core legal contracting tasks.
"The Summize AI-powered experience offers a sophisticated approach to contracting that legal teams are easily adopting and using daily," said Mike Clarke.
"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 contextualise 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," said Clarke.
Summize said the funding will go towards product development and international growth. The company also said it will add staff as it expands its customer base.
"We founded Summize to make contracts easier to understand and the contracting process more efficient by complementing how modern teams work," said Tom Dunlop, CEO and Co-Founder, Summize.
"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," said Dunlop.