Michael A. Greenop

Senior Associate

Michael Greenop is a senior associate in the Litigation/Controversy Department and is a member of the International Arbitration Practice Group.

Mr. Greenop’s practice focuses on commercial and investment treaty arbitration cases. He has represented clients in arbitrations under various institutional rules (including the ICC, LCIA and UNCITRAL Rules) across a range of industries. Mr. Greenop also has experience in complex international litigation, public international law, civil fraud, cross-border insolvency, investigations, and business and human rights. 

Prior to joining WilmerHale, Mr. Greenop worked at a leading international dispute resolution firm in London and as an employed barrister at one of New Zealand’s leading commercial sets. He has also served as tribunal secretary and as a judicial law clerk.

Mr. Greenop is the youngest Fellow of the Arbitrators’ and Mediators’ Institute of New Zealand (and co-founder of its young members’ group) and a Fellow of the Chartered Institute of Arbitrators.  He has undertaken speaking engagements and published on arbitration and public international law topics in peer-reviewed legal journals, including the Cambridge International Law Journal and Max Plank Yearbook of United Nations Law. Mr. Greenop also assisted with the preparation of the second edition of New Zealand’s leading text on arbitration, Williams & Kawharu on Arbitration.



  • Representing a specialist chemicals company in an ICC arbitration, sited in London, relating to service agreements.
  • Representing a leading construction company in an investment arbitration against a Middle Eastern State.
  • Representing a high net worth individual in an ICC arbitration, sited in Switzerland, concerning a contested division of assets involving assets valued in excess of US$1 billion.
  • Representing a shareholder in an LCIA arbitration, sited in London, concerning economic tort claims relating to assets located in numerous jurisdictions valued in excess of US$10 billion.
  • Representing a multinational energy company in an LCIA arbitration, sited in London, and related ad hoc adjudication proceedings concerning a contract dispute over operation and maintenance contracts.
  • Representing an Asia-Pacific energy company in an ad hoc arbitration, sited in New Zealand, concerning the construction of a significant energy-generating turbine.
  • Recent matters serving as the tribunal secretary in cases under the SIAC, ICC and UNCITRAL Rules.

Insights & News


  • Education

    • Professional Legal Studies Course, College of Law (New Zealand), 2017

    • LLB, University of Auckland, 2018

      with Honors

      Greg Everard Memorial Prize, Resolution Institute Scholarship, Simpson Grierson Employment Law Scholarship Prize, University Arts Blues Awards

    • BCom, Economics, University of Auckland, 2018

  • Admissions

    • New Zealand



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