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

Mr. Sacks has twenty years of experience assisting corporations, investors, U.S. government agencies, and foreign governments, to develop and present economic and financial testimony in complex litigations and arbitrations. Mr. Sacks was the expert for Shareholders in the recent In Re Facebook Inc., Class C Reclassification Litigation which sought to enjoin Facebook from issuing non-voting shares. Facebook cancelled its plans to issue those shares five days before trial was to begin. Mr. Sacks was also the consulting expert for Russia in the Yukos ECT arbitration, where the award was recently set aside by the Dutch Court, and continues to be involved in those matters. He has provided expert reports and testimony in numerous matters before Courts and arbitral Tribunals in the both the United States and internationally. 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 D.C.

Mr. Sacks received his B.A. in Mathematical Economics from Columbia University and his M.A. in Economics from the University of Chicago.

Representative Engagements
Shareholder victory in Facebook proposed reclassification

Submitted expert reports and testified at deposition on the harm to Facebook Class A shareholders that the proposed issuance of non-voting stock would cause. Shareholders sought to enjoin the issuance of such shares. Facebook cancelled its plans to issue the non-voting stock five days before the trial in Delaware Chancery Court was set to begin.

International arbitration under UNCITRAL Rules
Supported expert testimony on quantum in international arbitration on behalf of the Russian Federation in arbitrations under UNCITRAL Rules. Former shareholders of the Yukos Oil Company brought claims alleging unfair treatment and expropriation in violation of the Energy Charter Treaty. The arbitrations are thought to be the largest in the world in amount in dispute, which exceeds $100 billion.
Expert testimony and report in derivative suit for AIG
Submitted expert reports and testified at deposition in a derivative suit on behalf of American International Group, Inc. shareholders against the company's former CEO, Maurice Greenberg, and other former AIG executives. The action was concluded for a settlement of $115 million - the largest such settlement in the history of the Delaware Court of Chancery.
Expert statement in securities manipulation case
Submitted an expert statement in support of a motion to dismiss in litigation alleging a “pump and dump” securities manipulation scheme. The case settled before trial for 1% of claimed damages.
Assessed validity of an investment bank’s valuation
Supported expert testimony on valuation in international arbitration at the LCIA on behalf of a large investment bank. A former bank client refused to pay under terms of a contract with the bank to value and sell the clients assets. The former bank client challenged the validity of the bank’s valuation of the client’s assets. The Tribunal ruled in favor of the bank, awarding both damages and fees.
SEC Administrative Proceeding in the Matter of BioElectronics Corp, et. al., File No. 3-17104
Testifying expert on an event study related to a corporate disclosure. Reports and Testimony, September 2016
Curbow Family LLC v. Morgan Stanley Investment Advisors Inc., Index No. 651059/2010 (Sup. Ct. NY) and Rotz v. Van Kampen Asset Management, Index No. 651060/2010 (Sup. Ct. NY): Expert report in support of Plaintiff’s opposition to a motion for summary judgment
September 2012
Howard M. Ehrenberg, Chapter 7 Trustee for the Estate of Ruderman Capital Partners, LLC v. Kevin L. Washington, James King and Knight Capital Group, et al., Superior Court of the State of California for the County of Orange, Case No. 30-2011 00450602: Declaration filed in support of defendant’s motion for summary judgment or adjudication of claims
July 2012
In re Delphi Financial Group Shareholder Litigation, Delaware Court of Chancery, Consolidated C.A. No. 7144-VCG
Expert report and deposition, February 2012
Wolfson-Verrichia Group, et al., v. Metro Commercial Real Estate, Inc., et al., United States District Court for the Eastern District of Pennsylvania, No. 08-CV-4997
Expert report October 2011, deposition November 2011
FIFRA data compensation matter
Testified at arbitration November 2010, Summary of Expert Opinions disclosed October 2010
Navy Federal Credit Union v. Fiserv Solutions and XL Specialty Insurance Company, Index No. 09-601217-2009: Affidavit Of Benjamin Sacks in Support of Plaintiff Navy Federal Credit Union’s Motion for Partial Summary Judgment
Affidavit filed October 2010, Expert Witness Disclosure filed pursuant to New York State CPLR § 3101(d) filed September 2010
In re ACS Shareholder Litigation, Delaware Court of Chancery, Consolidated C.A. No. 4940-VCP
Deposition April 2010, Expert reports March and April 2010
FIFRA data compensation arbitration
Summary of Expert Opinions disclosed in August 2009
Eastbanc, Inc. and Anthony M. Lanier v. Georgetown Park Associates II Limited Partnership, et al., Superior Court of the District of Columbia, 2006 CA 002291 B
Supplemental Expert Statement and Rule 26(b)(4) Statement filed October 2010, deposition December 2008, Rule 26(b)(4) Statement filed October 2008
Teachers Retirement System of Louisiana v. Maurice R. Greenberg, Edward E. Matthews, Howard I. Smith, Thomas R. Tizzio, and C. V. Starr & Co. Inc, Delaware Court of Chancery, C.A. No 20106-VCS
Deposition June 2008, Expert reports January and May 2008
Lessons for Attorneys from Damages War-Stories
February 28, 2012
CLE presentation to New York County Lawyers Association and various law firms, New York, NY
Presentation on corporate governance and self-dealing to the Securities and Exchange Commission
June 17, 2010
News & Events
October 24, 2018
Brattle Contributes to Agreement on Attorney's Fees in Facebook's Abandoned Share Reclassification Plan

On October 24, 2018, Facebook agreed to pay $68.7 million in attorney’s fees in connection to a shareholder lawsuit over the proposed reclassification of the company’s common stock that was canceled by Facebook’s board of directors last year.

September 07, 2018
Brattle Contributes to Shareholder Settlement in Starz Merger with Lionsgate

Brattle Expert Benjamin Sacks opined in reports and testified at deposition on behalf of the Series A stockholders regarding the value of Starz and Mr. Malone’s financial incentives.

March 06, 2018
Benjamin Sacks to Present at Juris Conferences' 12th Annual Investment Treaty Arbitration Conference

Brattle Principal Benjamin Sacks will present at Juris Conferences’ 12th Annual Investment Treaty Arbitration Conference, taking place March 6, 2018 in Washington, DC.

September 25, 2017
Brattle Contributes to Shareholder Victory in Facebook Proposed Reclassification

On September 21, 2017 Facebook’s board of directors voted to abandon the pending reclassification of the company’s common stock.

May 12, 2016
Benjamin Sacks to Present at the Tenth Annual Investment Treaty Arbitration Conference

Brattle Principal Benjamin Sacks will present at the Tenth Annual Investment Treaty Arbitration Conference, taking place May 12-13, 2016, in Washington, D.C.

October 10, 2014
Coleman Bazelon Contributes to Landmark Decision in Texas Voting Rights Case by Evaluating the Economic Burden of SB 14

Coleman Bazelon testified in the closely watched voting rights case, Marc Veasey, et al. vs. Rick Perry, et al., that African Americans in Texas are disproportionately impacted economically by a Texas law requiring voters to present photo identification to retain the right to vote in person.

Personal Interests

Ben grew up in Philadelphia and Savannah, Georgia 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.