Michael S. "Mike" Sundermeyer

Joshua H. Soven is a partner in the Washington, D.C. office of Gibson, Dunn & Crutcher, LLP. Mr. Soven’s practice focuses on government antitrust investigations, antitrust litigation, and counseling on competition issues. He regularly represents clients before the Antitrust Division of the Department of Justice and the Federal Trade Commission, and in the federal courts. Mr. Soven has served in high-level positions at both U.S. antitrust agencies. Mr. Soven was Chief of the Litigati...

Stephen M. Seeger is a litigation partner specializing in construction and government contracts law. He has successfully tried dozens of complex cases in the state and federal courts of the District of Columbia, Maryland and Virginia, as well as arbitral panels, administrative boards and boards of contract appeals. With that perspective, he counsels clients on litigation avoidance and opportunity optimization. Steve is intimately familiar with the standard form commercial construction contrac...

David M. DeSalle is a lawyer recognized by Best Lawyers in the practice area of Energy Law. David M. practices law in Washington, District of Columbia Best Lawyers has recognized David M. DeSalle since 2027. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which David M. DeSalle is held by other lawyers.

Marcus Greene is a lawyer recognized by Best Lawyers in the practice area of Family Law. Marcus practices law in Vienna, Virginia Best Lawyers has recognized Marcus Greene since 2025. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Marcus Greene is held by other lawyers.

Andrew Thomas started his career representing insurance companies throughout Northern Virginia. Now, he only represents people and families against insurance companies. He's an accomplished trial lawyer specializing in serious auto collision, trucking collision, and other personal injury cases. He's handled thousands of cases within both state and federal court systems, and has obtained numerous multi-million dollar recoveries for his clients. Andrew is known for taking a diligent, aggressive...

I enjoy working with clients to ensure their family’s futures are secure, whether they are getting their first estate plan in place, assisting with estate or trust administration or helping to protect assets in case of divorce. I have developed long term relationships with clients, which allows me to alert them to changes in the law that may impact their plans. I am admitted to practice in Maryland, Virginia and the District of Columbia and I focus on the area of wills, trusts, estate p...

Charlie Spies has been providing strategic political law counsel at the highest levels in Washington D.C. and globally for over two decades. Throughout his career, he has counseled a broad range of corporations, organizations, candidates, officeholders, and individuals through a variety of challenges arising when politics, the government, law, and public policy meet. Before moving to global law firms, Charles spent almost a decade working within national political organizations and campaigns,...

Jim Coleman has forty years of experience in counseling employers on wage and hour matters, as well as defending employers in wage and hour litigation and administrative proceedings. His expertise includes in-depth knowledge of the Fair Labor Standards Act (FLSA), and many comparable state wage and hour laws. Jim served as General Counsel for the National Council of Chain Restaurants for two decades, and through his representation of the trade association, as well as many of its member compan...

Perry Lange represents clients in diverse antitrust matters before US courts, the US Department of Justice and Federal Trade Commission, state attorneys general and Congress. He has extensive experience litigating antitrust cases, including trials and appeals, securing merger clearance, and defending state and federal investigations. He has also represented a diverse set of clients in antitrust policy matters such as congressional investigations and hearings in both the House and Senate, incl...

Philip Baker-Shenk is a partner in our firm's Indian Law Practice Group and our Entertainment Law Practice Group. He provides legal and policy representation to dozens of Native American Indian Tribal governments as well as Tribal organizations and companies doing business with Indian Tribes. Mr. Baker-Shenk began working on behalf of Indian Tribes in our Nation's capital in 1976. For half a decade, he served as staff in the U.S. Senate, including two years as Majority General Counsel to Indi...