Dr Matthias Horn


Matthias focuses on M&A, complex reorganizations and corporate law matters.

Corporate clients, financial sponsors, banks and financial services providers turn to him for his broad and in-depth experience in domestic and international M&A transactions, including complex domestic and cross-border auctions and strategic disposals and acquisitions, including auctions, bilateral transactions, joint ventures, carve-outs, add-on as well as buy-out transactions.

He regularly works with major clients on transactions in a variety of sectors, including financial services, mobility, chemicals, professional services, technology and others.

In addition, complex and multi-jurisdictional carve-outs and corporate reorganizations and structural measures – particularly in the financial services sector – are at the heart of his practice, including mergers, spin-offs, split-offs as well as inbound and outbound cross-border mergers and transformations covering various European jurisdictions.

Matthias heads our German Financial Institutions sector group and is recognized by independent publications such as IFLR1000, Juve, Handelsblatt and Wirtschaftswoche as leading practitioner for M&A, PE, corporate law and restructuring in Germany. 


Representative matters

A multinational financial institution on the acquisition of assets of the European acquiring and issuing business from insolvent Wirecard group.

Converge Technology Solutions, a listed international IT solutions provider, on its European market entry and numerous M&A transactions in Germany.

House of HR, a leading European provider of specialized talent solutions and engineering and consulting provider, on numerous acquisitions in the German market.

Landesbank Hessen-Thüringen on the acquisition of Dexia Kommunalbank.

A subsidiary of a multinational financial institution on the acquisition of MCE Bank from Mitsubishi.

A public petroleum and natural gas company on the establishment of a global joint venture with German stock-listed Lanxess for synthetic rubber valued at EUR 2.75bn and the subsequent buy-out of Lanxess making ARLANXEO a 100% subsidiary of the petroleum and natural gas company.

Volkswagen Financial Service AG on a European-wide reorganization project involving more than 15 jurisdictions (Project Panda).

Pro bono

Organizing jobs and secondment programmes for Ukranian female lawyers in Germany following the start of the Russian invasion into Ukraine. 

Organizing support for Ukranian law students participating in the international rounds of the 2024 Philip C. Jessup Moot Court Competition. 

Published Work

  • Horn, Matthias (2020), „Zu den Auswirkungen einer Verschmelzung auf die Halterangaben und den Fahrzeugwert“, NZG 2020, 1021 (co-authored with Olgemöller, Udo) 
  • Horn, Matthias (2009), "Nichts für schwache Nerven – Die Beratung des Bieters bei feindlichen Übernahmen", Azur 02/2009 
  • Horn, Matthias (2006), "Gegen 78 Halbs. 2 GmbHG Verstossende Handelsregisteranmeldungen", Univ. Diss., Würzburger rechtswissenschaftliche Schriften, Ergon Verlag 

Leadership Positions And Professional Affiliations

  • German-American Lawyers Association (DAJV)
  • Acadamic Association for Business and Corporate Law (VGR)
Highly regarded
M&A, Private Equity and Restructuring & Insolvency, IFLR1000, 2023
Frequently recommended
M&A, JUVE Handbook, 2024



Member, German-American Lawyers Association (DAJV) 

Member, Acadamic Association for Business and Corporate Law (VGR) 

Founding member, University of Chicago Law School Alumni Germany e.V. 


Dr iur. University of Würzburg, Germany, 2006 

LL.M., The University of Chicago, USA, 2003 

Second German Law Degree, 2002 

First German Law Degree, 2000 


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.