Dr David Tabak is a senior vice president in NERA’s securities and finance practice, where he specialises in securities, bankruptcy, and valuation matters. He has testified on valuations of equity, financial derivatives, fixed-income instruments, businesses, and litigation settlements.

Dr Tabak has appeared as an expert in US state, federal, and bankruptcy court, and in arbitration proceedings under the authority of the NASD, AAA and ICC International Court of Arbitration. He has been retained as an expert to address issues including allegations relating to valuations, contract disputes, commercial damages, insurance coverage disputes, and disputes between brokers and customers.

Dr Tabak has published in his areas of expertise in forums such as St John’s Law Review and Shannon Pratt’s Business Valuation Update, and has published peer-reviewed articles in Litigation Economics Review and the Journal of Forensic Economics. He is also the author of book chapters, and has served as a member of BV Q&A Update’s expert author panel and as a referee for peer-reviewed journals. His publications have covered topics such as commercial disputes, economic analysis of market efficiency, valuation discounts for lack of marketability, and the application of statistics in litigation analyses.

Dr Tabak earned his PhD and MA degrees in economics from Harvard University and his BS in economics and BS in physics from the Massachusetts Institute of Technology.

WWL says: David Tabak is recognised as "a thoroughly experienced and well-respected expert witness". 

Dr David Tabak is a managing director in NERA’s securities and finance practice. In the area of securities class actions, Dr Tabak has testified on issues such as class certification, liability, materiality, affected trading volume, and damage calculations in cases alleging improper valuation, accounting irregularities, and merger disputes, among other claims. He has also testified on valuations of equity, financial derivatives, fixed-income instruments, businesses, and litigation settlements. Dr Tabak has appeared as an expert in state, federal, and bankruptcy court, and before arbitration panels, including the National Association of Securities Dealers (NASD), the American Arbitration Association, the International Dispute Resolution Centre, and the International Chamber of Commerce International Court of Arbitration.

Dr Tabak earned his PhD and MA degrees in economics from Harvard University and his BS in economics and BS in physics from the Massachusetts Institute of Technology.

Dr Tabak has published in forums such as St John's Law Review and Shannon Pratt's Business Valuation Update, and has published peer-reviewed articles in Litigation Economics Review and the Journal of Forensic Economics. Dr Tabak is also the author of book chapters and has served as a member of BVR Q&A’s expert author panel and as a referee for peer-reviewed journals. His publications have covered topics such as commercial disputes, economic analysis of market efficiency, valuation discounts for lack of marketability, and the application of statistics in litigation analyses. Dr Tabak has been an invited speaker at the US Securities and Exchange Commission and a presenter at forums that provide continuing legal education credits or continuing professional education credits for appraisers.

WWL says: Clients say David Tabak is "incredibly smart and extremely proactive in terms of spotting issues and suggesting avenues to explore".