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Steve Poss is a senior partner in the Litigation Department of Goodwin Procter LLP. He is co-chair of the firm's Securities Litigation & SEC Enforcement Practice, and is also a member of the firm's Financial Services, Private Equity, White Collar Crime and Government Investigations Practices.

Mr. Poss has a national business litigation and corporate counseling practice, particularly in the areas of securities class action defense, SEC investigations and enforcement actions, SEC disclosure issues, corporate governance, internal investigations, complex business litigation and arbitration, mergers and acquisitions, private equity and venture capital disputes, post-closing disputes, and contests for corporate control. He is currently representing internationally prominent clients in defending securities class action cases involving billions of dollars in mortgage-backed securities.

Mr. Poss has been selected by Chambers & Partners to appear in its research-based guide, Chambers USA: America's Leading Business Lawyers, each year since the guide began publication. Chambers USA ranks Mr. Poss as a leading business lawyer in both Securities Litigation and General Commercial Litigation. He has been named each year by Boston Magazine as one of Massachusetts' "Super Lawyers," based on a peer-review survey, and has also been selected to appear in The Best Lawyers in America as one of the best business litigators in the country.

Mr. Poss was trained as an associate at Cravath, Swaine & Moore in New York before joining Goodwin Procter.

Professional Activities

Mr. Poss served as the Vice-Chair and then the Co-Chair of the Securities Litigation Subcommittee of the American Bar Association Section of Business Law from 2000-2007. He is a member of the National Advisory Board of The SEC Institute, Inc. Mr. Poss is a former Vice Chairperson of the Massachusetts Bar Association Business Litigation Committee and a former member of the Civil Litigation Curriculum Committee of Massachusetts Continuing Legal Education. Mr. Poss has been approved as Panel Counsel for Securities Litigation by a worldwide leader in Directors and Officers liability insurance, and other major D&O insurance carriers.


Mr. Poss is an active lecturer. He has spoken across the United States and in Europe and written on topics such as:

  • “What’s Risk Got To Do With It – How to Stay Off the Target List of the Plaintiffs’ Lawyers, the SEC and the Prosecutors”
  • “New Trends in SEC Enforcement and Class-Action Litigation”
  • "Boardroom Dangers for Private Equity Partners"
  • "Corporate Governance in the Post-Enron Era"
  • "Internal Investigations - Dealing with the Aftermath"
  • "Defusing Website Time Bombs"
  • "Internal Control Over Financial Reporting"
  • "Shareholder Disputes"
  • "The Ultimate Trial Notebook"
  • "Mergers and Acquisitions - How to Avoid Litigation"
  • "Going Public - the Morning After"

A comprehensive selection of Mr. Poss’ articles and presentations can be found here.

In re Heartland Payment Systems Securities Litigation
The American Lawyer
March 1, 2010

Boardroom Dangers for Private Equity Partners
The Corporate Board
March 1, 2006

Annual Review of Developments in Securities Litigation
"Annual Review of Developments in Business and Corporate Litigation" published by the American Bar Association Committee on Business and Corporate Litigation
January 1, 2002

Annual Review of Developments in Securities Litigation
American Bar Association Section of Business Law
March 1, 2001

Defusing Website Time Bombs: Don't Let Your Website Create Securities Law Liability
The SEC Institute,
16th Annual Reporting Forum
San Francisco
December 1, 2000

Comply with 'New Economy' Standards, Avoid Legal Woes
Boston Business Journal
May 12, 2000

Klein v. Boyd: Holding Lawyers Liable Under Rule 10b-5
Insights: The Corporate and Securities Law Advisor
May 1, 1998

The Ultimate Trial Notebook
Massachusetts Continuing Legal Education (MCLE)
January 1, 1994