Michael J. "Mike" Lorenger

Chair of the firm’s Natural Resources Department and the American Indian Law & Policy Group. Represents tribal nations, those doing business with tribes and western water districts. Proven ability to resolve natural resource and water disputes before Congress and the Department of the Interior. Ryan Smith represents tribes, water districts and corporations before Congress, the Department of the Interior and the courts on tribal issues and Western natural resource issues. He has sign...

Paul Varela counsels clients in contract planning, administration, and complex dispute resolution matters nationally and internationally in the engineering and construction industry. His broad range of legal experience includes government and private data centers, roads, bridges, tall buildings, nuclear and conventional power facilities, environmental remediation, biomedical centers, energy and chemical projects, airports, professional sports stadiums, pharmaceutical projects, mass transit, a...

Benjamin Kinder is a top attorney recognized by Best Lawyers in the practice area(s) of Nonprofit / Charities Law. Benjamin, who practices law in Reston, Virginia, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Benjamin is held by other top lawyers in the same geographic and legal practice area.

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.

Alan S. Mark is a member of the firm’s Commercial Transactions , Financial Services , Real Estate , and Science & Technology Practice Groups. For the past 35 years, Mr. Mark has concentrated on corporate, commercial and real estate finance matters. He has served as outside counsel to numerous local, regional and national financial institutions, publicly traded biotechnology companies and hotel owners and operators. He has also served as outside counsel to information and telecommuni...

Jeffrey Davidson is a top attorney recognized by Best Lawyers in the practice area(s) of Environmental Law. Jeffrey, who practices law in Washington, District of Columbia, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jeffrey is held by other top lawyers in the same geographic and legal practice area.

Mr. Kovner represents clients in complex government antitrust investigations and litigations. He has cleared hundreds of challenging transactions through the HSR process, expeditiously and most often without the need for any remedies. Named a “National Litigation Star” for antitrust by Benchmark Litigation (2008–2020), Mark is consistently recognized as one of the country’s leading antitrust practitioners by Chambers & Partners USA; The Best Lawyers in America; Was...

Adam M. Smith is a top attorney recognized by Best Lawyers in the practice area(s) of International Trade and Finance Law. Adam M., who practices law in Washington, District of Columbia, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Adam M. is held by other top lawyers in the same geographic and legal practice area.

John E. Byrnes has been practicing exclusively in the area of family law since 1996. He practices in all of the northern Virginia circuit courts and juvenile and domestic relations district courts as well as the Virginia Court of Appeal. While most matters are amicably resolved thorough negotiation or mediation, John has extensive litigation experience. During his career, John’s practice has covered virtually every aspect of family law, from: complex equitable distribution matters invol...

Colleen M. Haddow has been practicing exclusively in the area of family law since 2006. Ms. Haddow focuses her practice on all aspects of family law, including divorce, custody, spousal support, mediation and property settlement agreements. Ms. Haddow regularly appears throughout courts in Northern Virginia representing the interests of her clients. She takes a practical and economical approach to her cases and strives to meet the individual needs of each client. Ms. Haddow thoroughly enjoys ...