Matthew Murchison

J. Mark Poerio is a top attorney recognized by Best Lawyers in the practice area(s) of Employee Benefits (ERISA) Law. J. Mark, who practices law in Washington, District of Columbia, has been recognized since 2013. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which J. Mark is held by other top lawyers in the same geographic and legal practice area.

David's practice consists of counseling independent directors of open-end funds, closed-end funds, exchange-traded funds and business development companies, as well as the funds themselves and their investment advisers on matters relating to the Investment Company Act of 1940, the Investment Advisers Act of 1940, the Securities Act of 1933 and the Securities Exchange Act of 1934.

Thomas M. Lucas is a Shareholder and Litigation Manager in the Norfolk, Virginia office of Jackson Lewis P.C. Mr. Lucas represents management exclusively in the full range of employment and labor law matters, including employment discrimination litigation and traditional labor law. He has represented corporate clients throughout the Mid-Atlantic Region and nationally for more than 25 years, including clients in the maritime, ship repair, manufacturing, healthcare and service industries. Prior...

David C. Kully is a top attorney recognized by Best Lawyers in the practice area(s) of Antitrust Law and Litigation - Antitrust. David C., 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 David C. is held by other top lawyers in the same geographic and legal practice area.

Arnold D. Spevack is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Arnold D., who practices law in Bethesda, Maryland, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Arnold D. is held by other top lawyers in the same geographic and legal practice area.

With more than 23 years of experience working with the pharmaceutical and medical device industries, Ms. Walsh brings FDA regulatory expertise to clients seeking to achieve their business objectives. She regularly counsels clients facing FDA administrative actions like inspections, warning letters, and recalls. But her passion is helping companies prevent or respond to government investigations, and she conducts internal investigations to achieve compliance and to best position her clients to...

Caitlin Grant is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. Caitlin, who practices law in Bethesda, Maryland, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Caitlin is held by other top lawyers in the same geographic and legal practice area.

For more information, please visit www.gibsondunn.com/lawyer/diamant-michael/ .

Yohai Baisburd counsels companies, trade associations and governments in a variety of international trade matters in the United States and globally. Mr. Baisburd’s practice focuses on trade remedy (antidumping, subsidies, safeguards) litigation and import/export compliance and enforcement proceedings. He is recognized by Chambers and Partners for his Customs Law expertise and in The Best Lawyers in America for International Trade and Finance Law. Mr. Baisburd is on the roster of potenti...

Mr. Colten was born in New York City and has been a long-time resident of Virginia. After serving as Assistant Commonwealth's Attorney in Fairfax County for two years, Mr. Colten entered private practice in Northern Virginia. He was a founding member and principal of Surovell, Jackson, Colten & Dugan, P.C. and its predecessor and successor firms, prior to forming Colten | Watson | Vincent Law Group P.C. In 1965, Mr. Colten received his B.S. with a major in sociology from American Universi...