Richard W. Chang

Matt Alegi solves problems. A deal lawyer with significant experience in dispute resolution and regulatory compliance, clients hire him because his practical, results-driven approach gets things done. While his legal practice spans a wide range of real estate and finance-related areas, Matt primarily concentrates on representing buyers, sellers and lenders in the acquisition, sale and financing of real estate. His practice also involves advising lenders and borrowers regarding problem loans, ...

David is the managing partner of the Washington, D.C. office, as well as the co-leader of the Investment Management Group. Prior to joining Sullivan & Worcester, David was Special Counsel in the Washington, D.C. office of Gibson, Dunn & Crutcher. He previously served as Assistant General Counsel for Legislation and Investment Company and Adviser Regulation at the Securities and Exchange Commission and as Counsel to SEC Commissioner Aulana Peters.

With a background representing emerging and established business entities, David Shapiro excels in providing end-to-end legal support to clients looking to navigate the complex legal landscape of running a successful business. From drafting and negotiating business contracts to regulatory and complex transactional matters, he provides his clients with a full range of legal services. Mr. Shapiro specializes in several areas of business law, including Corporate and Business Law and Transactions...

John Dalton is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. John, who practices law in Washington, District of Columbia, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John is held by other top lawyers in the same geographic and legal practice area.

Sol Wisenberg has four decades of experience serving as lead counsel in complex federal white-collar investigations and jury trials. He represents individuals and businesses facing federal criminal, regulatory, and civil exposure, including matters involving parallel proceedings, fraud-related allegations, and federal sentencing. A substantial part of Sol’s practice focuses on helping clients reduce criminal exposure and avoid indictment during government investigations, civil litigatio...

Ronald Machen, a member of the firm's global Management Committee and Chair of the Firm’s Litigation and Controversy Department is one of the nation's leading trial and white-collar defense lawyers. His practice focuses on government enforcement, corporate and congressional investigations, and litigating civil business disputes. An experienced litigator who has tried more than 35 cases to verdict, Mr. Machen specializes in litigating complex criminal and civil actions. He also routinely...

Mark J. Plumer is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law. Mark J., who practices law in Washington, District of Columbia, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mark J. is held by other top lawyers in the same geographic and legal practice area.

Mr. Fox is the managing partner of Ivins, Phillips & Barker. He was named in 2012 by the Washingtonian Magazine for the fourth straight year as one of the outstanding tax lawyers in Washington, D.C., in the Washington Post Magazine's list of Super Lawyers for the third straight year, and has been named in Best Lawyers in America in each of the last ten consecutive years. Although, during his 47 years with the firm, Mr. Fox devoted a substantial portion of his activities to international a...

Michael Sharkey is a partner with the firm’s Insurance Recovery practice and concentrates his practice on representing policyholders in insurance coverage disputes nationwide. He has represented clients on a wide variety of insurance issues, including litigation seeking insurance coverage for alleged products liability, environmental contamination, water damage and mold, director’s and officer’s liability, errors and omissions, asbestos bodily injury and property damage, unf...

When asked about Paul Schwinn, clients most often comment on his demeanor, his responsiveness and his business-minded approach to legal issues and opportunities. Working with clients across a wide range of industries, including technology, hospitality (including restaurants), oil and gas, biotech and government contracts, Paul provides counsel on a wide variety of transaction structures commonly utilized in such industries. Clients view him as an all-around business and legal advisor. During ...