Guidewire pays $1.7 billion cash for hyperexponential, up to $2.1 billion in all

Guidewire, the US insurance software vendor, has agreed to buy London-based hyperexponential for $1.7 billion in cash, plus up to $400 million in earnouts tied to recurring revenue targets. That makes a headline value of up to $2.1 billion, as Reuters reported.

The terms come from Guidewire’s press release and investor presentation, filed with the US Securities and Exchange Commission on October 27, 2026.

How the deal is structured and paid for

The cash price is subject to adjustments. The investor presentation says it includes a pool for retaining employees. The earnout of up to $400 million depends on recurring revenue targets and on performance after the deal closes.

Guidewire plans to fund the purchase with a new $1.0 billion term loan and cash on hand. Bank of America and Citibank have provided a binding debt commitment. According to the presentation, closing is not subject to a financing condition.

Closing is expected in the second quarter of Guidewire’s fiscal 2027, which ends on January 31, 2027. The release does not name specific regulatory or shareholder approvals and warns that the deal may not close on time or at all. Centerview Partners and Latham & Watkins advise Guidewire. J.P. Morgan and Wilson Sonsini Goodrich & Rosati advise hyperexponential.

What hyperexponential sells to insurers

hyperexponential, also called hx, makes software for pricing and underwriting commercial property and casualty insurance. It describes its product as an agentic platform in which AI agents work alongside underwriters and actuaries. The functions it covers are submission triage, risk assessment, pricing, rating and portfolio steering.

Its customers are insurers, reinsurers and managing general agents. Guidewire’s release names Aviva, Allianz, Sompo, Beazley, Markel, HDI, Cincinnati Financial, Convex and Bowhead. The company says its platform has supported underwriting decisions covering more than $75 billion in annual commercial premium. That figure is Guidewire’s own claim, and the release gives no breakdown or independent check.

hx is already a member of Guidewire’s PartnerConnect Technology Alliance program, so the two companies have worked together before. The deal turns that partnership into ownership. The founder and CEO, Amrit Santhirasenan, is quoted in the release on the value of underwriting judgment. Guidewire CEO Mike Rosenbaum is quoted on the strategic fit.

The numbers behind the price

The investor presentation puts the opportunity at about $30 billion for agentic underwriting, roughly 1% of direct written premium. It gives the same estimate for claims and for core systems. That framing explains the purchase: Guidewire is best known for core systems and claims, and underwriting is the third area it is now pricing at the same scale. The estimate is Guidewire’s own.

Guidewire says the deal should add at least 650 basis points to its fiscal 2027 annual recurring revenue (ARR) growth on an inorganic basis. It also expects at least 150 basis points to durable organic ARR growth starting in fiscal 2028. The presentation uses “over 100 basis points” for the organic figure in one place, so the two documents do not fully agree. The company says the deal fits its long-term margin targets.

The disclosures leave several things out. The presentation says hx has about 300 people. It does not give hx’s ARR, growth rate, customer count or margins, so there is no way to calculate the multiple Guidewire is paying. The $1.7 billion is only the guaranteed part. The remaining $400 million depends on how hx performs after closing.

What changes for insurers and the market

For existing hx customers, nothing changes before closing. The release does not say whether the product will be sold separately or only as part of Guidewire’s platform. It also does not address integration plans or pricing.

For Guidewire customers, the pitch is a single vendor for the commercial lines lifecycle, from underwriting through core systems. The presentation’s thesis is “Complementary strengths, one platform”. Whether insurers prefer that over mixing vendors is untested, and the release offers no customer evidence.

The deal also shows where money is going in insurance AI. AI-native vendors that sell agentic tools to a regulated industry are being bought by the incumbent platform companies. A UK company has also been bought by a US-listed buyer. The sources do not discuss competing bidders or regulatory review.

Guidewire says the deal does not change its first quarter fiscal 2027 guidance, which was issued on September 3, 2026. It will update full-year guidance on its December 2026 earnings call.