Guidewire to Buy hyperexponential for $1.7 Billion in Push Into AI Underwriting

Guidewire agreed to buy London-based hyperexponential for $1.7 billion in cash, a bet that AI agents should help insurers price risk.

Guidewire Software announced the definitive agreement on Oct. 27, 2026. The announcement came at its CONNECTIONS conference in Las Vegas.

hyperexponential is based in London. It already works with its buyer as a Guidewire PartnerConnect Technology Alliance Partner.

For commercial insurers, pricing is the core decision. Charge too little and claims overwhelm premiums; charge too much and sound risks go elsewhere.

A $1.7 billion base price, with more riding on revenue

The base purchase price is $1.7 billion in cash, subject to adjustments. Guidewire will pay up to an additional $400 million in contingent consideration.

That extra money depends on achievement of specified recurring revenue targets. The full price could therefore reach $2.1 billion.

Recurring revenue is money customers pay repeatedly, usually under subscription contracts. Tying part of the price to it makes the sellers share the growth test.

What hyperexponential sells to insurers

hyperexponential provides AI-native underwriting and pricing software for commercial lines P&C insurers. P&C means property and casualty insurance.

Its platform amplifies underwriting judgment across submission triage, risk assessment, pricing, rating and portfolio steering. Those steps run from an application arriving to a policy being priced.

The company says its platform has powered underwriting decisions across more than $75 billion in annual commercial P&C premium. Its customers include Aviva, Allianz, Sompo, Beazley and Markel.

hyperexponential has a particularly strong presence among commercial and specialty insurers in the United Kingdom. Guidewire did not disclose the target's revenue or employee count in the announcement.

The bet on agentic underwriting

Guidewire calls the approach agentic underwriting, meaning AI agents work alongside human underwriters. The agents help assess risk, price it and make decisions.

That help spans the most complex specialty risks and high-volume commercial business. Guidewire says insurers will be able to respond to more submissions, faster.

"Insurance is a distinctly complex industry, where the quality of risk decisions has an immense impact on business outcomes," said Mike Rosenbaum, Guidewire's chief executive officer.

"We founded hyperexponential on the conviction that underwriting judgment is the highest-leverage work insurers do," said Amrit Santhirasenan, its chief executive and co-founder.

"Together, we'll bring insight from submission to bind and from the individual risk to the entire portfolio," Santhirasenan said. He said insurers could improve loss ratios and allocate capital more effectively.

A loss ratio compares claims paid with premiums collected. Guidewire says the combination could free underwriting teams to focus on the risks where expertise matters most.

Underwriting speed and accuracy remain vital to pricing risk appropriately. Guidewire cited research finding AI-driven cuts in time-to-quote are having a significant effect on insurer revenue.

New debt will fund much of the purchase

Guidewire expects to fund the transaction through $1 billion in new term loan financing and existing cash on hand.

It has secured a binding debt commitment for the loan from Bank of America, N.A. and Citibank, N.A. A binding commitment is a lender's firm promise to provide financing on agreed terms.

Closing is expected in Guidewire's fiscal 2027 second quarter. The deal should not affect first-quarter fiscal 2027 guidance, which Guidewire issued on Sept. 3, 2026.

Centerview Partners is Guidewire's exclusive financial advisor, with Latham & Watkins as legal counsel. J.P. Morgan advises hyperexponential, with Wilson Sonsini Goodrich & Rosati (UK) as legal counsel.

What Guidewire expects the deal to do for growth

Guidewire expects the deal to contribute at least 650 basis points to its fiscal 2027 ARR growth on an inorganic basis. A basis point is one hundredth of a percentage point, and ARR is annual recurring revenue.

Inorganic growth is growth bought through an acquisition, rather than generated by the existing business. Starting in fiscal 2028, Guidewire expects at least 150 basis points of durable organic ARR growth from the deal.

Guidewire also expects the deal to accelerate revenue growth. It says that growth should remain consistent with its long-term margin targets.

More than 570 insurers in 44 countries rely on Guidewire products. The company counts an implementation record of more than 1,700 successful projects.

Guidewire will provide second-quarter guidance and update full-year fiscal 2027 guidance on its next earnings call in December 2026.

What remains unknown

What remains unknown is whether the transaction closes on the expected timetable, because Guidewire's own statement flags that risk. Also unknown is how much of the additional $400 million will ultimately be paid, since it depends on recurring revenue targets.

What to watch is the December 2026 guidance update and the expected closing in fiscal 2027's second quarter. Early customer adoption of the combined platform will be the next test after that.

The verified record is clear on the wager itself: Guidewire is paying a large cash price to own the AI layer where insurers decide which risks to take, and at what price.