Margaret M. Cassidy

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Margaret is one of the four founding partners of Rock Creek Energy Group. She has over 18 years of experience counseling and representing a broad swath of electric industry participants on a wide range of federal energy regulatory and administrative litigation matters. She provides strategic counsel to investor-owned utilities, renewable and conventional generators, private equity and institutional investors, developers, and renewable energy providers on transactional, regulatory, and litigat...

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...

Selena J. Linde is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law and Litigation - Insurance. Selena J., who practices law in Washington, District of Columbia, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Selena J. 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.

Don King’s practice primarily involves representation of debtors, creditors, and committees in Chapter 11 reorganizations, and he also represents other types of debtors and creditors, particularly businesses and institutional lenders, in all phases of the bankruptcy process including workouts. Since 1991, he has served as a Chapter 7 Trustee in Bankruptcy for the Eastern District of Virginia, and he is currently head of the firm’s Bankruptcy & Creditors’ Rights practice....

Alan Winston Granwell is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Alan Winston, who practices law in Washington, District of Columbia, has been recognized since 2006. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Alan Winston is held by other top lawyers in the same geographic and legal practice area.

Patrick L. O'Neil is a top attorney recognized by Best Lawyers in the practice area(s) of Eminent Domain and Condemnation Law and Land Use and Zoning Law. Patrick L., who practices law in Bethesda, Maryland, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Patrick L. is held by other top lawyers in the same geographic and legal practice area.

Richard T. Collins is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law. Richard T., who practices law in Washington, District of Columbia, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Richard T. is held by other top lawyers in the same geographic and legal practice area.

Michael J. Gardner is a top attorney recognized by Best Lawyers in the practice area(s) of Admiralty and Maritime Law. Michael J., who practices law in McLean, Virginia, has been recognized since 2003. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michael J. is held by other top lawyers in the same geographic and legal practice area.