Mr. Sacks is a Principal in the Washington, DC office of The Brattle Group.

Mr. Sacks has over 20 years of experience assisting corporations, investors, US government agencies, and foreign governments to develop and present economic and financial testimony in complex litigations and arbitrations. He serves as a testifying expert in both international arbitrations and US court matters. Mr. Sacks has particular expertise in valuation and corporate governance. He recently served as the testifying expert for Shareholders in In Re Facebook Inc., Class C Reclassification Litigation which sought to enjoin Facebook from issuing non-voting shares, and was the consulting expert for Russia in the Yukos ECT arbitration, where the award was set aside by the Dutch Courts. Mr. Sacks teaches a Continuing Legal Education course on damages featuring several valuation case studies, has taught classes to attorneys on valuation, and served as a panelist on damages at the recent Juris International Arbitration conference in Washington, DC

Mr. Sacks received his BA in Mathematical Economics from Columbia University and his MA in Economics from The University of Chicago.


University of Chicago
MA in Economics

Columbia University
BA in Mathematical Economics

Personal Interests

Ben grew up in Philadelphia and Savannah, and now lives in DC with his wife, two kids, and two dogs. He enjoys spending time with family, playing squash and tennis, grilling, music, poker, and snowboarding.

A picture of the Chicago skyline with Lake Michigan on the left

Ex Post and Ex Ante Standards in Damages

Ben Sacks uses two clear examples to explain how applying the ex post and ex ante methods can result in different damages amounts.

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Deposition and Report March 2019.

Globalstar Fee Hearing (Mudrick Capital Management, L.P. and Warlander Asset Management, L.P., on behalf of themselves and all other similarly situated stockholders of Globalstar, Inc. and derivatively on behalf of Nominal Defendant Globalstar, Inc v. James Monroe, et. al., Delaware Court of Chancery, C.A. No. 2018-0699 TMR.) Testifying expert on benefit of Settlement relating to corporate governance changes, and other matters.

January 2018

Report on the valuation of a Russian Trucking firm (LCIA).

February 2018 and January 2019. Testimony April 2019.

Expert report on valuation of Canadian Telecommunications firm (ICSID).

Report 2018.

Report on contractual damages relating to a buy/sell agreement for a controlling interest in a Korean Bank (BIT, International Chamber of Commerce).