David L. Marks

Sean Clancy is the team leader of Nixon Peabody’s Tax practice, and a member of the firm’s Public Company Transactions team. He assists clients with a broad range of tax and business planning matters and related tax policy matters. My focus Tax Planning I advise clients on federal tax planning, including assistance in structuring mergers and acquisitions and other transactions. In addition, I counsel private equity funds on domestic and cross-border taxation and corporate finance ...

Alice G. Haase is a top attorney recognized by Best Lawyers in the practice area(s) of Land Use and Zoning Law and Real Estate Law. Alice G., who practices law in Arlington, Virginia, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Alice G. is held by other top lawyers in the same geographic and legal practice area.

Nathaniel Edmonds serves as the Co-Chair of the firm’s litigation practice in Washington, D.C., which houses over 100 lawyers handling a variety of litigation matters, including internal corporate investigations, white collar criminal defense, anti-corruption compliance, sanctions and export controls, data privacy and cyber security, intellectual property and patent litigation, international arbitration, and antitrust counseling. Mr. Edmonds focuses on global internal investigations, in...

Victor E. Long is a Partner in the Washington, D.C. litigation law firm of Regan Zambri Long PLLC and limits his practice to representing injured clients in medical malpractice, automobile, wrongful death and other serious personal injury cases. Mr. Long is board-certified in Civil Trial Advocacy by the National Board of Trial Advocacy and is licensed to practice in the District of Columbia and Maryland. Prior to entering private practice, Mr. Long was a trial attorney in the U.S. Department ...

Tanja H. Castro co-founded CastroHaase PLLC in 2012. She is included in the 2013, 2014, 2015 and 2016 editions of Washington, DC & Baltimore’s Best Lawyers. Her practice is focused in the areas of commercial real estate valuation and taxation issues, including property tax assessment appeals. She advises clients on minimizing their real estate tax obligations. Ms. Castro is experienced in reviewing, analyzing and obtaining reductions in the assessments of all types of commercial pro...

Gifford R. Hampshire is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Land Use and Zoning. Gifford R., who practices law in Manassas, Virginia, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Gifford R. is held by other top lawyers in the same geographic and legal practice area.

Louis Cohen is a senior counsel in the firm's Litigation/Controversy Department, and a member of the Appellate and Supreme Court Litigation Practice Group. He joined the firm in 1967. Mr. Cohen served as Deputy Solicitor General of the United States from 1986-1988, and focuses on US Supreme Court and other appellate litigation and corporations law. Mr. Cohen’s appellate practice has included more than fifty cases on the merits in the US Supreme Court and a large number of cases in the c...

Steven A. Kaplan is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law and Securities Regulation. Steven A., who practices law in Tysons, Virginia, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Steven A. is held by other top lawyers in the same geographic and legal practice area.

Gerald A. Morrissey III is a top attorney recognized by Best Lawyers in the practice area(s) of Admiralty and Maritime Law. Gerald A., 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 Gerald A. is held by other top lawyers in the same geographic and legal practice area.

Harry L. Gutman is a top attorney recognized by Best Lawyers in the practice area(s) of Government Relations Practice and Tax Law. Harry L., who practices law in Washington, District of Columbia, has been recognized since 1997. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Harry L. is held by other top lawyers in the same geographic and legal practice area.