Sixfold, the AI-driven insurtech platform trusted by global insurers, has raised US$30 million in a Series B funding round. The round was led by Brewer Lane, with strategic investments from Guidewire, and continued participation from existing investors including Bessemer Venture Partners and Salesforce Ventures.
The funding will support the development of Sixfold’s ‘AI Underwriter’, a next-generation platform with autonomous agents designed to advance end-to-end underwriting. The system aims to improve speed, consistency, and decision quality for insurers, enabling underwriters to focus on strategic work such as portfolio performance analysis, testing new appetite strategies, and identifying emerging market opportunities.
“The underwriting role is being rebuilt from scratch,” said Alex Schmelkin, Founder and CEO of Sixfold. “We’re creating a future where underwriting operations completely run on Sixfold and strategy is run by people. We’re redefining what it means to be an underwriter.”
The Series B capital will also allow Sixfold to expand its research and engineering teams to advance AI underwriting technology, including autonomous agents, extensive data integration, portfolio visibility, and near-zero time to value. Additionally, the company will scale commercial operations to support global expansion across North America, Europe, Latin America, and Australia.
The technology is designed to integrate seamlessly with existing underwriting tools, such as workbenches and policy administration systems, enabling rapid implementation without requiring underwriters to change their workflows—a key factor in Sixfold’s adoption among major insurers.
“Underwriting remains one of the most critical and complex functions in P&C insurance,” said Jay Grayson, Vice President of Corporate Development and New Ventures at Guidewire. “Sixfold’s approach tackles that complexity and delivers meaningful value to insurance carriers by applying agentic AI to key underwriting processes.”
Jane Tran, Co-founder and COO of Sixfold, added, “There’s a clear split forming in the industry. To win business, you need speed and selectivity to quote quickly and write profitable risks. To retain talent, you need to give time back to underwriters to focus on strategy. Sixfold delivers both, and that competitive advantage increasingly shows up in combined ratio performance.”
John Kim, Founder of Brewer Lane and former Chief Investment Officer of New York Life, said, “We did extensive due diligence across the market, talking with customers, prospects, and industry experts. Sixfold’s reputation stood out again and again, specifically around their deep expertise in underwriting. That level of market respect is rare; it speaks to the quality of the product and team they’ve built.”
Sixfold’s existing AI underwriting solutions have already processed over 1 million submissions across more than 40 lines of business, representing $265 billion in gross written premium. Clients include Zurich North America, Guardian, Generali GC&C, and Skyward Specialty.
Skyward Specialty deployed Sixfold across 11 underwriting teams, reducing quote response time by an average of 35%, while Zurich North America rolled out the platform to its middle market team of over 200 underwriters, saving up to two hours per submission.
