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Supio Raises $60M Series B With Backing From Thomson Reuters Ventures, Sapphire Ventures, And Mayfield To Accelerate AI Adoption In Legal Industry

Seattle-based legal tech startup Supio raised $60 million in a Series B funding round, aiming to enhance its AI-powered platform tailored for personal injury and mass tort law firms.

The startup recently announced that the round was led by Sapphire Ventures, with participation from Mayfield and Thomson Reuters Ventures, bringing Supio’s total funding to $91 million. The company previously raised $25 million in a Series A round in 2023, GeekWire reports.  According to Supio, the funds will be used to scale engineering and product teams, expand marketing efforts, and further refine their platform’s AI capabilities.

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Supio’s software is designed to help plaintiff-side law firms organize, filter, and analyze large volumes of unstructured data such as medical records, legal filings, and client communication, TechCrunch reports. The system applies specialized AI models to extract key information, flag inconsistencies, and structure timelines, processes that traditionally require hours of manual paralegal work.

“Our growth since Series A confirms what we’ve believed all along — that specialized AI built for personal injury and mass tort law can transform how these practices operate,” CEO Jerry Zhou said in the company’s statement.

Supio said its AI has been adopted by several large firms including Hughes & Coleman, Daniel Stark, Whitley Law, and Thomas Law Offices. While exact usage metrics weren’t shared, the company reported a four-times increase in annual recurring revenue since August.

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Thomson Reuters Ventures’ participation in Supio’s Series B reflects a targeted approach to investing in companies that align with its core markets and long-term strategy. “In the legal industry, personal injury and mass tort litigation demand specialized AI solutions designed specifically for these complex practice areas, and Supio addresses these unique challenges with both accuracy and depth,” Tamara Steffens, managing director at Thomson Reuters Ventures, said in Supio’s funding announcement. She added that the firm sees Supio’s purpose-built platform as a critical tool for law practices aiming to improve case efficiency and outcomes at scale.