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Dr. Hanns-Christoph Rosien, Lawyer, Public Auditor, Partner

Dr. Hanns-Christoph Rosien


Lawyer, Public Auditor


+49 69 95941-429



  • International accounting as per IFRS and US GAAP
  • BDO-certified for US-GAAP, IFRS, § 319a HGB
  • Validation of risk management systems
  • Audit under section 404 of the Sarbanes-Oxley Act
  • Due diligence

Industry expertise

  • Pharmaceutical and chemical industry
  • Software development
  • Automotive suppliers
  • Medical technology
  • Logistics companies
  • Consultancy Services

Specialist subject

  • Professional memberships: Institute of Public Auditors in Germany; Chamber of Accountants institution under public law in Berlin; Rechtsanwaltskammer Frankfurt am Main (Chamber of lawyers), Frankfurter Forum für Rechnungslegung e.V. (Frankfurt forum for accounting); Johann-Wolfgang-Goethe-University, Frankfurt am Main; Ausschuss Wirtschafts- und Unternehmensberatungen (committee of economic and management consulting) of the Chamber of Commerce and Industry, Frankfurt;
  • Publications: ‘Fit for Global Accounting’ (1997); ‘Beck´sches Handbuch der Rechnungslegung’ (Beck’s manual of accounting, 2003); ‘Die erstmalige Anwendung der IFRS’ (Initial application of IFRS), Dashöfer-Verlag (2004); ‘Rechtshandbuch Projektfinanzierung und PPP’ (Legal manual project financing and PPP), Carl Heymanns Verlag, 2nd edition (2008); ‘Zukunftsorientiertes Krankenhausmanagement’ (Future-oriented hospital management); ‘Rechnungslegung nach IFRS’ (Accounting according to IFRS), Deutsche Krankenhaus Verlagsgesellschaft mbH (2009), Co-Author for Merkt/Probst/Fink HGB und IFRS. Ein themensystematischer Kommentar (2017)
  • Member of Supervisory Board ICS International Aktiengesellschaft Identcode-Systeme
  • Lectureship for IFRS at ISM International School of Management, Frankfurt am Main