Jeffrey Kleywegt

With his razor-sharp insight and pragmatic mindset, Jeffrey always manages to keep focus on the core of the matter in complex collective actions and international disputes.

About Jeffrey

Jeffrey advises and litigates in collective actions and complex commercial disputes. His practice focuses on collective claims, cross-border compensation proceedings, and strategic dispute resolution for companies, investors, and interest groups. Thanks to his background in law and economics, he combines legal expertise with a sharp insight into commercial interests. He has extensive experience with cross-border disputes and regularly advises on jurisdiction, applicable law, and other private international law issues.

Clients value his clear communication, pragmatic approach, and ability to quickly cut to the core of complex matters.

Approach

Jeffrey plays a key role in the development and execution of large-scale proceedings. He regularly acts for claim foundations, investor groups, and litigation funders, possessing broad experience in both collective actions and complex commercial disputes. His work includes collective proceedings related to the diesel emissions scandal, various cartel damages claims, and disputes in the fields of data privacy and corporate fraud.

‘Jeffrey Kleywegt is concise, clear, commercial and pragmatic. He understands the need to focus on the major issues.’ Chambers Global Guide (2026)
‘Extremely responsive, creative and client focused... a pleasure to work with.’ The Legal 500 (2025)

Recognitions

  • Chambers Global Guide and Chambers Europe Guide – Litigation: Mass Torts: Mainly Plaintiffs – Netherlands – Up and Coming
  • The Legal 500 – Dispute Resolution: Commercial Litigation (2024-2026) – Key Lawyer
  • The Legal 500 – Dispute Resolution: Class Actions (2024-2026) – Key Lawyer

Qualifications

Jeffrey obtained a degree in Dutch Law as well as a degree in Economics from Erasmus University Rotterdam. Additionally, he completed the postgraduate program in Contracting at Leiden University (PAO Leiden). He is fluent in Dutch and English.

About us

Asteriq is an independent litigation firm specializing in complex disputes. We act in cases where financial, commercial, or societal interests are significant, and where making the right strategic choices determines the outcome.