Petra Hanselmann

Baker & McKenzie Zurich


Petra Hanselmann is a partner in the Firm’s Zurich office. She graduated from the University of Zurich Law School in 2002 and after her bar admission in Switzerland in 2005, she obtained an LL.M. in corporate law from New York University in 2007. Before re-joining Baker McKenzie in 2011 Petra worked with major law firms in New York and in Zurich.

Practice Focus

Petra Hanselmann’s professional practice is focused on advising clients in the areas of mergers and acquisitions, private equity and corporate reorganizations, including pre-transaction restructurings and post-acquisition integrations. She has broad experience in particular in cross-border M&A, carve-out and joint venture transactions. She also routinely advises on general corporate and corporate governance matters.

Representative Legal Matters

  • Advised UBS regarding the sale of a majority stake in UBS Fondcenter to Clearstream
  • Advised a global technology company in connection with several acquisitions in Switzerland
  • Advised Deutsche Beteiligungs AG on the acquisition of duagon group
  • Advised Gilde Buy out Partners in connection with the acquisition of RIRI SA and again in the sale of RIRI SA to Chequers Capital 
  • Advised a Swiss-based energy group in its transformation into a management-owned company
  • Advised various entities in connection with local and cross-border joint ventures
  • Represented different Swiss listed entities in sell-side and buy-side mergers and acquisitions, many of these being cross-border transactions
  • Advised in several major domestic and cross-border reorganization and restructurings including the spin-off of a listed entity and the cross-border relocation of a listed entity.
  • Advised in connection with various post M&A integration and restructuring matters

Professional Associations and Memberships

  • Swiss Bar Association - Member
  • Zurich Bar Association - Member


  • Switzerland (2005)


  • New York University School of Law (LL.M. Corporate Law) (2007)
  • University of Zurich (lic. iur.) (2002)


  • English
  • French
  • German
  • Spanish


Co-author, Warranty & Indemnity Insurance und Private Equity, in: Gericke, Dieter, Private Equity VI, PE 6.0: Neue Mitspieler, neue Technologien, neue Themen, neues Recht, Schulthess, 2018

Author, Commentary on articles 29 and 30 of the Swiss Merger Act, in: Stämpflis Handkommentar, Fusionsgesetz, 2nd Edition, 2015