Alexander Demuth
Managing Director
Quick facts
Co-head of A&M’s International Arbitration Group and leader of the firm’s German Disputes and Investigations practice
Damages expert in international arbitration
Specializes in post-M&A disputes and commercial disputes
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Alexander Demuth, Co-Head of A&M’s International Arbitration Group and leader of the German Disputes and Investigations practice, is a Managing Director based in Hamburg and Munich. He specializes in advising clients in arbitration, litigation and out-of-court settlement with a focus on post-merger and commercial disputes.

He has almost twenty years’ experience as expert witness, in valuation services, business modeling and transaction services. For more than six years, Mr. Demuth has specialized in providing advice to tribunals and judges, to claimants and respondents, to buyers and sellers and to management and supervisory boards in disputes relating to mergers and acquisitions, shareholder matters or long-term contracts, e.g. supply agreements, license agreements or joint venture agreements.
He has been appointed as expert witness in numerous matters providing expert opinions on damages, accounting and valuation issues, business plan assumptions or prospective financial information.

Mr. Demuth has issued expert opinions and testified in both German and English language in matters under the following regulations: ICC, DIS, VIAC, SCC, ICSID and SIAC.

Mr. Demuth is a German public accountant (Wirtschaftsprüfer). He is a member of the Chamber of Public Accountants in Germany (Wirtschaftsprüferkammer), the American Institute of Certified Public Accountants (AICPA), where he is also registered with the Forensic and Valuation Services (FVS). He also passed the exams for the US Certified Public Accountant, being awarded the Illinois CPA Society Excel Award.

Furthermore, Mr. Demuth is a member of the German Institution of Arbitration (DIS), the Swiss Arbitration Association (ASA) and the Vienna International Arbitration Centre (VIAC).
Prior to joining Alvarez & Marsal, he was a partner with a big four accounting firm, co-leading the Valuation & Business Modelling group. He was also part of the global product development group for Valuation & Business Modelling and the EMEIA trainer team. 

A German national, Mr. Demuth is fluent in German and English.

Mr. Demuth features in Who’s Who Legal Germany - Arbitration Expert Witnesses ((described as a “top-notch” damages expert), in Who’s Who Legal Arbitration - Expert Witnesses (“smart, motivated and engaging”), in Who’s Who Legal Consulting Experts: Economic Consulting – Quantum of Damages (“astute and hardworking, and he as the ability to digest a huge amount of information quickly and effectively”) and in Who’s Who Legal Consulting Experts: Forensic & Litigation Consulting – Accountants (“sophisticated and yet down to earth in his dealings with clients”, recognized for his “reliable accounting”).

NOTE: Alvarez & Marsal employs CPAs but is not a licensed CPA firm.