Walter Ricciardi joined Paul Weiss as a partner in June 2008 and has extensive experience defending a broad variety of investigations conducted by the U.S. Securities and Exchange Commission, Public Company Accounting Oversight Board and other regulatory authorities.  Additionally, he has extensive experience conducting internal investigations for public companies and directors, including investigations related to accounting issues.

Prior to joining Paul, Weiss in June 2008, Walter was the Deputy Director of the SEC’s Division of Enforcement, where he supervised many of the Commission’s most significant investigations related to financial fraud, insider trading, and investment adviser,  broker-dealer and mutual fund compliance issues.

In April 2004, Walter was appointed to run the SEC’s Boston office, which was responsible for enforcement and examination programs for the New England region.  He was appointed as Deputy Director of the SEC’s Division of Enforcement in October 2005, and his duties included managing the enforcement efforts of the Commission’s eleven regional offices.

Prior to joining the SEC, Walter spent 20 years with PricewaterhouseCoopers (“PwC”) and its predecessor, Coopers & Lybrand, where he was in charge of defending the firm’s litigation and regulatory matters.  While at PwC, he was elected by his partners to serve on the firm’s board, which is responsible for overseeing the management of the firm.  He was also elected to serve on the Global Oversight Board of the PwC global organization.

Since joining Paul, Weiss, Walter was appointed and served a three-year term from 2012 to 2014, on the Public Company Accounting Oversight Board's Standing Advisory Group ("SAG"). The role of the SAG is to assist the Board in reviewing existing auditing and related professional practice standards and evaluating proposed standards, and to recommend to the Board new or amended standards. Walter was a member of the Independent Standards Council of the Sustainability Accounting Standards Board ("SASB") which oversees the development of SASB's sustainability accounting standards from January 2015 to March 2016.

As an Adjunct Professor at New York University School of Law, Walter teaches a seminar on issues in SEC enforcement.

Walter is recognized as a leading individual for (Nationwide) Securities: Regulation: Enforcement in Chambers USA (2013-2018), for Financial Services: Litigation by The Legal 500 US (2017), recognized by his peers in U.S. News & World Report/”Best Lawyers” (2011-2019) for Corporate Governance Law, Litigation - Securities and Securities Regulation and was selected to Securities Docket's 2013 “Enforcement 40” list, a list of the best and brightest securities enforcement defense lawyers. He served as a note and comment editor of the New York University Law Review.