Dr Stephan Bühner

Senior Associate

Stephan advises on public commercial law, including the relevant constitutional and European aspects.

Stephan advises on administrative and court procedures, on compliance aspects and on transactions.

Stephan regularly advises on permitting and planning law requirements. He has a specific focus on questions relating to state aid and public funding as well as on foreign trade law. He regularly represents clients in FDI screening procedures vis-à-vis the German Federal Ministry for Economic Affairs and Climate Action. Stephan’s practice also covers lobbying regulations and legal issues relating to the German Supply Chain Due Diligence Act.


Representative matters

SAP on acquisition of LeanIX.

Elmos Semiconductors SE on sale of Dortmund wafer fab to Littlefuse.

Digital Bridge to acquire majority stake in GD Towers in partnership with Brookfield.

A multinational financial institution in a multibank partnership with DekaBank, LBBW and Comyno building the blockchain platform SWIAT.

Published Work

  • Bühner S. (2018) „Die Rückabwicklung unionsrechtswidriger Beihilfen im Privatrecht“, 2018, zugl. Diss. Marburg
  • Bühner S., Böhm M. (2016) „Arbeitskreis B Diskussionszusammenfassung: Fracking, in: Gesellschaft für Umweltrecht e.V., Dokumentation zur 39. Wissenschaftlichen Fachtagung der Gesellschaft für Umweltrecht e.V. Berlin 2015
  • Bühner S. et al. (2016) „Netzwerke im Privatrecht“, 1. Aufl. 2016 (Herausgeber)



Rechtsanwalt, Germany,  2019


Second German Law Degree, 2018

Dr. iur., Universität Marburg, 2017

First German Law Degree, 2013

University of Zurich, 2008/2009

A&O Shearman was formed on May 1, 2024 by the combination of Shearman & Sterling LLP and Allen & Overy LLP and their respective affiliates (the legacy firms). Any matters referred to above may include matters undertaken by one or more of the legacy firms rather than A&O Shearman.