Mathias Wittinghofer

Dr. Johannes Frey advises clients on all aspects of tax controversy and international tax planning. He represents many of the largest multinational companies through the full range of tax controversy proceedings, including audits, administrative appeals, multilateral controls and judicial proceedings. Dr. Frey’s tax practice focuses on complex tax controversy matters, as well as international tax planning and cross-border mergers. He has co-authored numerous articles on a wide range of ...

Dr. Sebastian Jungermann is a partner in ARNECKE SIBETH DABELSTEIN's Frankfurt office. Sebastian advises clients regarding German and European competition and antitrust laws, including German, EU and multi-jurisdictional merger control proceedings, cartel proceedings, abuse-of-dominance proceedings, litigation, compliance programs, as well as internal audits and contractual advice. Sebastian represents his clients before courts, the German Federal Cartel Office, the European Commission as wel...

Andreas Steck is a top attorney recognized by Best Lawyers in the practice area(s) of Banking and Finance Law and Regulatory Practice. Andreas, who practices law in Frankfurt/Main, Germany, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Andreas is held by other top lawyers in the same geographic and legal practice area.

Maximilian Clostermeyer is a top attorney recognized by Best Lawyers in the practice area(s) of Mergers and Acquisitions Law and Real Estate Law. Maximilian, who practices law in Frankfurt/Main, Germany, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Maximilian is held by other top lawyers in the same geographic and legal practice area.

Prof. Dr. Jörg Kupjetz advises German and international banks, financial institutions, investors, and companies, with a focus on corporate and financing transactions—especially corporate finance, acquisition, project and real estate financing, structured financing, and venture debt. He holds a degree in banking administration and is also a solicitor (England and Wales), business mediator, certified compliance manager, and senator in the Senate of Economy.

Dr. Markus Bauer advises both German and international clients in connection with national and cross-border corporate acquisitions, the formation and administration of joint ventures, private equity transactions and the structuring and restructuring of corporations and corporate groups. A further focus of his work is on advising management boards, managing directors and supervisory boards of predominantly medium-sized companies on their respective duties and the development of compliance prog...

Gökçe Uzar Schüller is a top attorney recognized by Best Lawyers in the practice area(s) of Mergers and Acquisitions Law. Gökçe, who practices law in Frankfurt/Main, Germany, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Gökçe is held by other top lawyers in the same geographic and legal practice area.

Dr. Stephan Hutter focuses on international capital markets transactions, cross-border corporate matters and M&A transactions as well as corporate governance and compliance matters. Dr. Hutter has a particularly broad range of experience in initial public offerings, capital increases and high-yield debt financings involving international securities offerings of German, Austrian and Swiss companies, including dual listings and private placements of shares and debt securities in the United ...

Daniel Herper is an experienced transactions lawyer specialising in M&A transactions and restructurings. He advises the governing bodies of companies in crisis, both in and out of court. This involves accompanying them during crises and judicial restructuring proceedings (company voluntary arrangements / insolvency protection proceedings). Herper also supports shareholders, prospective buyers, lenders and insolvency administrators in the development and implementation of financing and tra...

Lawyer and Tax Advisor, Attorney-at-law N.Y. Partner