Signed · United Kingdom · Software and IT services
Guidewire agrees to acquire hyperexponential.
Guidewire Software signed a definitive agreement on 27 October 2026 to acquire hyperexponential, a London-based provider of AI-based underwriting and pricing software for commercial property and casualty insurers. It was signed on 27 October 2026. It had not completed by 28 October 2026.
Signing 27 October 2026
- Buyer
- Guidewire Software, Inc. ·San Mateo, United States
- Target
- Hyperexponential Ltd ·London, United Kingdom
- Type
- Acquisition
- Announced
- 27 October 2026
- Signed
- 27 October 2026
- Value
- USD 1.7 billion in cash plus up to USD 400 million in contin
- People
- Not stated in the release
- Last checked
- 28 October 2026
The people side in the United Kingdom
- In a business transfer or service provision change, staff move to the buyer on their existing terms; a dismissal solely or mainly because of the transfer is unfair. Transfer of Undertakings (Protection of Employment) Regulations 2006, regulations 4 and 7
- Long enough before a TUPE transfer, the employer informs staff representatives and consults on any measures envisaged; failure can cost up to 13 weeks' pay per affected employee. Transfer of Undertakings (Protection of Employment) Regulations 2006, regulations 13 and 16
- Acas guidance says TUPE is not likely to apply to a transfer of shares only, as in a share deal. Acas: TUPE, advice for employers and employees
- Buying over 25% of an entity in one of 17 sensitive areas in the UK needs approval before completion, or the deal is void; the first review takes up to 30 working days. GOV.UK: Check if you need to tell the government about an acquisition that could harm the UK's national security (National Security and Investment Act 2021)
- A business that starts employing staff in the UK registers with HMRC as an employer before the first payday, and not more than 2 months before it starts paying people. GOV.UK: Register as an employer
- Guidewire press release (Exhibit 99.1 to Form 8-K), 27 October 2026 (primary source)
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