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Former FINRA Principal Counsel of Enforcement and White House Aide Joins Greenberg Traurig’s Government Law & Policy Practice in New York

NEW YORK (March 20, 2014) – – William Mack has joined the international law firm Greenberg Traurig LLP, as of counsel in its Government Law & Policy and Financial Regulatory & Compliance practices in New York. Prior to joining Greenberg Traurig, Mack was a Principal Counsel for Enforcement at the Financial Industry Regulatory Authority (FINRA) in New York and before that worked as Director of the Executive Secretariat in the Office of the United States Trade Representative and as a Deputy Associate Counsel at the White House.

Mack joins one of the leading government relations offices in both the City and the State. The group has been consistently ranked among the top five lobbying practices in New York City by the City Clerk’s office and among the top five law firm lobbying practices in New York State by the Joint Commission on Public Ethics, and its predecessors.  Mack’s experience complements the group’s capabilities. He will focus his practice on government affairs, government contracts, administrative law, government investigations, legislative, lobbying, trade and regulatory and compliance matters.

Mack is part of a team that provides clients with one-stop service built on real government and business experience. They have built credibility with government decision-makers because of their reputation for sound analysis and effective advocacy.

“Will expands our ability to serve clients in key areas of government regulation,” said Ed Wallace, Co-Chairman of Greenberg Traurig’s New York City office and a shareholder in the firm’s New York State Government Law Practice.

“Will brings invaluable experience and knowledge regarding how government works that will allow us to help our clients navigate regulatory agencies and stay abreast of regulatory trends. We welcome him to the team,” said John Mascialino, Chair of New York’s Government Law and Policy Practice.

Prior to working at FINRA, Mack was Director of the Executive Secretariat in the Office of the U.S. Trade Representative. There, he advised Ambassador Ron Kirk on trade agreement negotiations and World Trade Organization (WTO) litigation decisions, prepared him for Congressional testimony, and meetings with heads of state and industry organizations.  Mack also served as a Deputy Associate Counsel at the White House providing counsel to senior White House staff on appointments and Congressional inquiries. 

Mack is also experienced counseling companies on regulatory and compliance matters relating to Securities and Exchange Commission regulations, the Exchange Act, Anti-Money Laundering laws and FINRA rules.

Mack holds a J.D. from Columbia Law School where he was the writing and research editor for the Columbia Journal of Law and Social Problems, and he holds a B.A. from University at Albany, SUNY.  

Greenberg Traurig – New York Government Law & Policy Practice

Greenberg Traurig has one of New York City’s leading real estate and government relations offices in the City. The group, which has been consistently ranked among the Top 5 lobbying practices in New York City by the City Clerk’s Office, represents major U.S. Companies, leading not-for-profit institutions and major real estate companies in major transactions involving New York City. Our attorneys are part of a national practice named “Law Firm of the Year” in the U.S. News-Best Lawyers 2014 edition of Best Law Firms for Government Relations.

Greenberg Traurig – Financial Regulatory and Compliance Group

GT’s Financial Regulatory and Compliance Group brings together attorneys from various offices and practice areas to assist financial services firms of all types and sizes as well as vendors to those firms as they face regulatory, legislative, supervision, examination, licensing, compliance and governance matters.

Our regional and practice diversity positions us to collaborate across practices and geographies to deliver clients the service and value that they require in today’s world.

About Greenberg Traurig, LLP

Greenberg Traurig, LLP (GTLaw) has more than 2,000 attorneys in 38 offices in the United States, Latin America, Europe, Asia and the Middle East and is celebrating its 50th anniversary. One firm worldwide, GTLaw has been recognized for its philanthropic giving, was named the largest firm in the U.S. by Law360 in 2017, and among the Top 20 on the 2016 Am Law Global 100. Web: Twitter: @GT_Law.