Guidewire Acquires AI Underwriting Firm Hyperexponential for $1.7B in Cash

Quick Facts

• Guidewire agreed to acquire Hyperexponential for a base price of $1.7 billion in cash, plus up to $400 million in contingent consideration tied to revenue targets.
• Hyperexponential's software supports underwriting decisions across more than $75 billion in annual commercial P&C premium, up 66% from $45 billion the prior year.
• Guidewire will fund the deal with $1 billion in new term loan financing from Bank of America and Citibank, plus existing cash on hand.

Guidewire (NYSE: GWRE) announced October 27 at its Connections Conference in Las Vegas that it signed a definitive agreement to acquire London-based Hyperexponential for $1.7 billion in cash, with an earn-out of up to $400 million linked to post-closing recurring revenue performance over three years.

The San Mateo-based insurance software maker disclosed the all-cash purchase in a Form 8-K filed with the SEC on the same day. The deal is expected to close in the second quarter of Guidewire's fiscal year 2027, the period ending January 31, 2027.

What Hyperexponential Does

Hyperexponential, known as hx, was founded in 2017 by Amrit Santhirasenan and Michael Johnson. The company builds AI-native underwriting and pricing software for commercial lines property and casualty insurers.

Nearly 600 insurers across 40 countries use its platform, including Aviva, Allianz, Beazley, Markel, and Cincinnati Financial. The company has raised nearly $90 million from investors including Andreessen Horowitz and Battery Ventures. Hyperexponential was already a technology alliance partner in Guidewire's PartnerConnect program before the deal was announced.

In October 2026, Hyperexponential launched hyperoperator, a unified AI agent designed to handle underwriting work end-to-end alongside human teams.

The Strategic Case

Guidewire CEO Mike Rosenbaum said the acquisition is aimed at building an agentic underwriting platform. "Insurance is a distinctly complex industry, where the quality of risk decisions has an immense impact on business outcomes," Rosenbaum said. "Guidewire and hyperexponential are uniquely positioned to deliver industry-specific AI solutions that will transform commercial underwriting."

Santhirasenan, who will continue leading the business post-close, said the combination would let insurers respond to submissions faster and improve loss ratios. "We founded hyperexponential on the conviction that underwriting judgment is the highest-leverage work insurers do," he said.

Financing and Advisors

Guidewire secured a binding commitment for a $1 billion senior secured term loan A facility from Bank of America and Citibank, maturing December 2, 2029. The remainder of the purchase price will come from cash on hand.

Centerview Partners is serving as Guidewire's exclusive financial advisor, with Latham and Watkins as legal counsel. J.P. Morgan is advising Hyperexponential, with Wilson Sonsini Goodrich and Rosati (UK) as legal counsel.

Expected Financial Impact

Guidewire expects the acquisition to add at least 650 basis points to fiscal 2027 annual recurring revenue growth on an inorganic basis. Starting in fiscal 2028, the company projects at least 150 basis points of durable organic ARR growth contribution from the acquired business each year.

Guidewire ended fiscal 2026 on July 31 with annual recurring revenue of $1.237 billion, up 19% in constant currency. The company said the deal will have no impact on its first quarter fiscal 2027 guidance issued September 3, 2026. Updated full-year fiscal 2027 guidance is expected on its next earnings call in December 2026.

Brokers and market participants are watching how the combined platform will affect submission handling and pricing speed across commercial lines. If AI agents accelerate underwriting decisions at scale, the effects on placement timelines and risk selection could be significant across the global P&C market.