Hans-Jakob Diem

Hans-Jakob Diem


Walder Wyss AG

Recognized since 2011

Zürich, Switzerland

Practice Areas

Capital Markets Law

Corporate Law

Mergers and Acquisitions Law

Private Equity Law

Send Hans-Jakob Diem an email at hans-jakob.diem@walderwyss.com Navigate to map location for Hans-Jakob Diem
Lawyer of the Year Badge - 2022 - Mergers and Acquisitions Law Lawyer of the Year Badge - 2020 - Private Equity Law
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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.

Location
  • Seefeldstrasse 123
    Zürich 8008
    Switzerland
Languages
  • English
  • French
  • German
Bar Admissions
  • Switzerland

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 2025 for work in:
  • Capital Markets Law
  • Corporate Law
  • Mergers and Acquisitions Law
  • Private Equity Law

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