Hélène Weidmann, LL.M.
Hélène Weidmann, LL.M.

Hélène Weidmann, LL.M.

Partner, Lausanne

12 avenue des Toises | P.O. Box 140 | CH-1001 Lausanne | Switzerland
12 avenue des Toises | P.O. Box 140 | CH-1001 Lausanne | Switzerland
T +41 58 552 01 44


Hélène Weidmann’s practice is focused on M&A transactions (representing buyers or sellers), corporate and commercial law as well as financing transactions.

She assists Swiss and international entrepreneurs as well as Swiss and foreign companies of all sizes, from start-ups and SMEs to multinational companies across a broad range of industries and sectors such as banking, IT, retail and luxury.

Hélène Weidmann’s expertise covers purchase and sale of companies (including management buyout (MBO), management buy-in, as well as private equity funds, industrial and private investments), commercial transactions, partnerships, restructuring, financing, as well as most contractual and regulatory issues that may arise during the business life of a company.

In addition, she has a strong expertise in the fields of shareholders’ disputes, corporate governance and stock exchange regulations.

Her outstanding interpersonal and professional skills as well as her great interest in the activities of her clients allow her to offer services tailored to secure her clients’ interests.

Deals & Cases

  • Advised BPD Zenith, one of the world’s leading provider of enterprise asset management solutions for the acquisition of EAM Swiss GmbH and EAM MaaS AG dedicated to maximizing the benefits of businesses software solutions.
  • Advised the US company Athyrium Capital Management, LP as Swiss legal counsel for a senior secured loan granted to the listed company Basilea Pharmaceutica.
  • Advised Banque Profil de Gestion (BPDG) for the buyout of ONE swiss bank (ONE), the buyback of BPDG’s shares by the shareholders of ONE and the merger that followed.
  • Advised BDL Développement SAS « Bulle de Linge » for the acquisition of Blanchisserie du Léman SA.

Education & Admission

  • New York University School of Law, LL.M. (2007)
  • Admitted to the Bar in Switzerland (2005)
  • University of Lausanne (including 1 year in the University of Zurich), Law degree (2003)

Memberships and public offices

  • Member of the Board of Directors of ONE swiss bank SA, Geneva
  • Member of the Board of Directors of IOTA Group Holding SA, Mies
  • Recognized by SIX Swiss Exchange Regulation as a representative in the areas of bonds, derivatives and equity securities.
  • Member of the Equality Commission of the Vaud Bar Association
  • Member of the Advisory Board of MOD-ELLE
  • Member of the Committee of the Women’s Business Society (WBS)
  • CMTA Legal Expert (Capital Market and Technology Association)
  • Vaud Bar Association (OAV)
  • Swiss Bar Association (FSA)
  • Cercle Suisse des Administratrices (CSDA)
  • Centre du droit de l’entreprise de l’Université de Lausanne (CEDIDAC)
  • Geneva Association of business law (AGDA)
  • Swiss M&A Experts Chamber


  • French
  • English
  • Italian
  • German