Hans-Jakob Diem

Hans-Jakob Diem

Zürich, CH recognized lawyers icon Recognized in Best Lawyers since 2011
Walder Wyss AG

67 Best Lawyers awards

Walder Wyss AG logo

Awarded Practice Areas

Capital Markets Law Corporate Law Mergers and Acquisitions Law Private Equity Law

Biography

Hans-Jakob Diem is a corporate Partner at Lenz & Staehelin. He heads the firm's Corporate and M&A practice group and is the co-head of the Capital Markets practice group in Zurich. He has extensive experience in representing clients in a variety of corporate transactions, concentrating on mergers and acquisitions, capital market transactions, bank financings and corporate governance matters. Hans-Jakob Diem is regarded as a leading corporate practitioner in Switzerland and is regularly involved in high-profile transactions in the Swiss market, both domestic and cross-border. He also serves as principal outside counsel for a number of clients on stock exchange and securities trading law and corporate governance matters. Besides his corporate practice, Hans-Jakob Diem lectures corporate and M&A law at the universities of Basel and Zurich and is a regular speaker at conferences, an author of various legal textbooks and a regular contributor in law journals.

Hans-Jakob Diem completed his graduate and post-graduate studies in Basel (lic iur, 1992) and London (LLM, London School of Economics and Political Science, 1998). He was admitted to the Basel Bar in 1995. Hans-Jakob Diem joined Lenz & Staehelin in 1998 and has been a Partner since 2007.

Walder Wyss AG

67 Best Lawyers awards

Walder Wyss AG logo

Overview

  • English
  • French
  • German

  • Switzerland

Client Testimonials

Awards & Focus

Lawyer of the Year Badge - 2022 - Mergers and Acquisitions Law Lawyer of the Year Badge - 2020 - Private Equity Law
Named "Lawyer of the Year" by Best Lawyers® for:
  • Mergers and Acquisitions Law, Zürich, Switzerland (2022)
  • Private Equity Law, Zürich, Switzerland (2020)
Recognized in The Best Lawyers in Switzerland 2026 for work in:
  • Capital Markets Law
  • Corporate Law
  • Mergers and Acquisitions Law
  • Private Equity Law

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