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Picture of Stefan Brunnschweiler

Stefan Brunnschweiler, LL.M.

Head of the CMS Corporate/M&A Group

CMS von Erlach Poncet Ltd.
Dreikönigstrasse 7
P.O. Box
8022 Zurich
Languages German, English, French, Italian

Stefan Brunnschweiler is the global head of the CMS Corporate/M&A Practice Area Group. In this position, he sets the strategy for the group and leads an international team of more than 350 partners and 1000 lawyers.

Stefan Brunnschweiler specialises in international and domestic M&A transactions, corporate restructurings, corporate law and general contract matters (e.g. joint ventures, partnerships and shareholders' agreements). He is experienced in a broad range of national and international transactions, both sell- and buy-side (including corporate auction processes) as well as the assistance of clients in their ongoing corporate and commercial activities.

Stefan Brunnschweiler has engaged in competition law, including merger control filings for more than 10 years.

Stefan Brunnschweiler has been practicing with CMS Zurich since 2001.

"I understand that my role as a lawyer is to facilitate transactions rather than make them overcomplicated while always keeping an eye on the particularities of the legal environment."

"I have deep respect for my clients' time constraints. I try to point out the vital issues to the client while dealing with the other legal matters independently."

"Outdoor sports with my friends and time with my family freshens up my mind and is a source of new ideas."

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"Understands the clients' needs and his approach to problems is very pragmatic and practical."

Chambers Global Guide, Switzerland, Corporate/M&A 2018

"Very good management of transactions and good communication."

Chambers Global Guide, Switzerland, Corporate/M&A 2018

"He is willing to take a pragmatic stance."

Chambers Europe Guide, Switzerland, Corporate 2017

"He was a pleasure to work with: very pragmatic, co-operative and results-oriented."

Chambers Europe Guide, Switzerland, Corporate 2016

"Stefan Brunnschweiler provides legal services of the highest quality. He is very responsive and hands-on, he is very quick in understanding the client's needs and very focused on achieving the maximum for his client without losing sight of the overall situation. He has in-depth knowledge of the different sectors of laws as well as the economic backgrounds of the matters he is advising on. He is very structured and efficient in his work and a very good partner to negotiate and communicate with."

Client feedback – IFLR1000, Financial and corporate 2016

"Stefan Brunnschweiler was helpful, was very committed, very flexible in adjusting his schedule to our needs. His service was fully satisfactory for me."

Client Feedback 2014

"Stefan Brunnschweiler […] is a proactive person and therefore also well respected for transactions here in Switzerland, and I think that has added to the decision to use CMS in that particular case again."

Client Feedback 2014

Relevant experience

  • ABB on the sale of its hydro generator service business to Andritz and on the acquisition of KEYMILE's communication networks business
  • Alstom on the sale of parts of its gas turbine business to Ansaldo Energia
  • Argos on the acquisition of Arthur Flury AG
  • Aurelius on the acquisition of the trade operations of the listed Swiss Valora Group and of Publicitas, an international advertising marketing agency from the listed Switzerland-based PubliGroupe, and on the sale of the Swiss ICT service providers connectis AG and Softix AG to the French SPIE Groupe
  • Bucher-Motorex-Group on the acquisition of Circle K in Poland (previously Statoil Fuel & Retail)
  • Colibrys SA on the sale of Colibrys SA in a multi-seller transaction
  • Deutsche Beteiligungs AG on the acquisition of the Romaco businesses owned by Robbins & Myers, Inc.
  • Dover on its USD 285m acquisition of the Swiss Maag Group and on its sale of Bowl Chopper Product Line by Tipper Tie Alpina GmbH
  • FLACHGLAS Wernberg GmbH on its acquisition of companies of the Pilkington Group
  • FlexLink on the acquisition of SSS-Fördertechnik
  • Gemalto on its acquisition of the secure document business from Trueb AG
  • Heraeus on the acquisition of the Swiss precious metals processor Argor-Heraeus
  • LCP Europe Limited on the sale of LCP Libera AG to Paros Capital AG
  • Merbag on the acquisition of Mercedes-Benz Milano from Mercedes-Benz Italia (Daimler Group) and on the acquisition of Mercedes-Benz Luxembourg S.A. from Daimler AG
  • Nikkiso America, Inc. on the acquisition of Cryogenics Industries for USD 483m
  • Schaeffler Switzerland on the sale of its fine-blanking business
  • Schibsted on the sale of its 50% stake in Swiss Classified Media AG (internet platforms tutti.ch and car4you.ch) to Tamedia AG
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  • 2003 – University of San Diego (USA), Master of Law (LL.M.)
  • 2000 – Bar Admission (Zurich, Switzerland)
  • 1997 – University of Zurich and Geneva (Switzerland)
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  • Zurich Bar Association
  • Swiss Bar Association
  • Studienvereinigung Kartellrecht
  • Swiss Private Equity & Corporate Finance Association
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CMS ad­vises Sun­rise on the sale of Swiss Towers AG
CMS Guide to Man­dat­ory Of­fers and Squeeze-outs
CMS European M&A Study 2017


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22 March 2017
CMS European M&A Study: M&A ro­bust in 2016 and con­tinu­ing...
In­to the un­known: European M&A Out­look 2016
A study of European M&A activ­ity
Li­ab­il­ity of Hold­ing Com­pan­ies
March 2016
CMS European M&A Study 2016
CMS ad­vises Aure­li­us on ac­quis­i­tion of the trade op­er­a­tions...
CMS European M&A Out­look 2015
CMS ad­vises Aure­li­us on the com­ple­tion of the ac­quis­i­tion...
Sellers tak­ing on less risk in European M&A
CMS von Er­lach Pon­cet ad­vises Gemalto on the ac­quis­i­tion...