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Sarahanne Jackson
Partner
Corporate
London
sarahanne.jackson@wsgr.com

D44-20-39634067

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Sarahanne Jackson is a partner in the London office of Wilson Sonsini Goodrich & Rosati, where she is a member of the firm’s corporate and mergers and acquisitions practices.

Sarahanne is highly experienced in advising a wide range of clients on complex transactions including private and public M&A, joint ventures, fundraisings, and distressed deals. She has also supported clients in matters of corporate governance and compliance with stock exchange rules in the UK-listed environment.

Sarahanne guides clients on key strategic transactions across multiple international jurisdictions such as the UK, the U.S., Spain, the Netherlands, Switzerland, Japan, and South Korea. In addition to English, she is fluent in French, German, and Spanish.

Prior to joining the firm, Sarahanne was a senior associate in the corporate and M&A department of Slaughter and May in London.

Experience

Sarahanne Jackson is a partner in the London office of Wilson Sonsini Goodrich & Rosati, where she is a member of the firm’s corporate and mergers and acquisitions practices.

Sarahanne is highly experienced in advising a wide range of clients on complex transactions including private and public M&A, joint ventures, fundraisings, and distressed deals. She has also supported clients in matters of corporate governance and compliance with stock exchange rules in the UK-listed environment.

Sarahanne guides clients on key strategic transactions across multiple international jurisdictions such as the UK, the U.S., Spain, the Netherlands, Switzerland, Japan, and South Korea. In addition to English, she is fluent in French, German, and Spanish.

Prior to joining the firm, Sarahanne was a senior associate in the corporate and M&A department of Slaughter and May in London.

Education
  • Legal Practice Course (LPC), BPP University, London, United Kingdom
  • LL.M., Institute for Law and Finance, Goethe University, Frankfurt, Germany
  • Master 1, Law, Paris 2 Panthéon-Assas University
  • B.C.L., Law, University College Dublin
Admissions
  • Solicitor, England and Wales
Credentials
Education
  • Legal Practice Course (LPC), BPP University, London, United Kingdom
  • LL.M., Institute for Law and Finance, Goethe University, Frankfurt, Germany
  • Master 1, Law, Paris 2 Panthéon-Assas University
  • B.C.L., Law, University College Dublin
Admissions
  • Solicitor, England and Wales
Focus Areas
  • Corporate
  • Corporate Governance
  • Mergers & Acquisitions
Recent Insights
Client Highlights
Firm Advises hyperexponential on Acquisition by Guidewire for up to $2.1 Billion
On October 27, 2026, Guidewire, a cloud platform for P&C insurers, announced that it entered into a definitive agreement to acquire hyperexponential, a London-based agentic platform provider of AI-native underwriting and pricing software for commercial lines P&C insurers, for a base purchase price of $1.7 billion in cash, subject to adjustments. The agreement also includes up to an additional $400 million in contingent consideration based on achievement of specified recurring revenue targets, bringing the total deal value to up to $2.1 billion and marking the transaction as the largest-ever M&A exit of a privately held, venture-backed UK technology company. hyperexponential is an existing Guidewire PartnerConnect Technology Alliance Partner and brings established trust and scale in underwriting, having powered underwriting decisions across more than $75 billion in annual commercial P&C premium for leading global insurers, reinsurers, and managing general agents. Wilson Sonsini Goodrich & Rosati advised hyperexponential on the transaction.
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Client Highlights
Wilson Sonsini Advises Cognite, Major Shareholders on $3.1 Billion Sale to Schneider Electric
On June 30, 2026, Aker ASA (Aker) and the other shareholders of Cognite announced that they have entered into an agreement to sell 100 percent of the shares in Cognite Holding B.V. (Cognite) to Schneider Electric based on an enterprise value of US$3.1 billion. Wilson Sonsini Goodrich & Rosati’s cross-border tech M&A team advised Cognite and its major shareholders, including Aker, TCV, and Accel, on the transaction.
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