Dr. Sarro is Principal and Director of The Brattle Group, and a leader of its practice in cases involving “big data” and document analytics.

He is a financial and empirical economist who is the lead consulting expert to investigative and trial teams in complex investigations and high-stakes litigation. He applies detailed financial models and statistical analyses to quantitative and qualitative data to identify critical evidence used to inform case theory or expert analysis.

Dr. Sarro specializes in cases involving complex questions of financial conduct, incentives, and value, frequently in the context of fraud or breaches of contracts, market regulation, or law. Much of his recent work involves false claims, financial market fraud, structured finance transactions, and shams. His recent cases include several financial crisis-related fraud cases, including the $1.4 billion Standard & Poor’s credit ratings case, the $1.3 billion Bank of America “hustle” case, and the $714 million Bank of New York Mellon FX Standing Instruction case. His current cases involve faulty financial reporting, kickbacks, mortgage finance and securitization, money laundering, and securities violations.

Dr. Sarro has nearly 20 years of experience working with top academics, executives, and litigators in several areas of legal and business practice to clearly convey answers and analytic approaches to business decision-makers, policymakers, regulators, and courts.

Previously, Dr. Sarro was an Associate at Putnam, Hayes & Bartlett and The Brattle Group. He also was a Principal and Office Director at LECG. He rejoined Brattle from Watermark Economics, an economic and policy consultancy he co-founded.

Personal Interests

Mark also does pro bono policy work at the state and local level. He currently holds elected office as the Chairman of the Dover Planning Board and is a member of the town’s Capital Budget and Long Range Planning committees.

Mark takes an active interest in household economics. His research has focused on the significance of both financial and non-financial factors in household economic decision-making. From 2006-2008, he was the economist on the Massachusetts task force whose recommendations were the basis for the state’s child support guidelines formula. He also was the economic advisor to the 2013 Guidelines task force.


June 2013

“Economic Review of the Massachusetts Child Support Guidelines,” submitted to the Commonwealth of Massachusetts Office of Court Management, Child Support Guidelines Task Force

November 2011

Direct Prefiled Testimony of Mark Sarro in re Colonial Water Company, Massachusetts Department of Public Utilities, D.P.U. 11-20

April 2010
Deposition in Margaret G. Murphy v. Edward M. Murphy, Docket No. NO02D0327DV1, Commonwealth of Massachusetts Trial Court, Probate and Family Court Department, Norfolk SS
October 2008

Report of the Child Support Guidelines Task Force