Adam T. Teufel

For more information, please visit www.gibsondunn.com/lawyer/harrison-Donald/ .

Christine M. Shiker is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Christine M., 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 Christine M. is held by other top lawyers in the same geographic and legal practice area.

James P. Bobotek is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law. James P., who practices law in Tysons, Virginia, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which James P. is held by other top lawyers in the same geographic and legal practice area.

John E. Smith is a top attorney recognized by Best Lawyers in the practice area(s) of International Trade and Finance Law. John E., 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 John E. is held by other top lawyers in the same geographic and legal practice area.

Steven A. Sigsbury specializes in tax and estate planning, estate and trust administration, fiduciary responsibility, and business and real estate planning. Steven’s laid-back personality allows him to relate to clients and instill a sense of trustworthiness at the outset of any engagement. Steven analyzes and simplifies complex problems and offers clients individualized solutions. As a tax and estate planner, Steven works with clients to develop tax-efficient estate plans that accompli...

Biz is a leader in the field of criminal defense and internal investigations focusing on white-collar defense and health care cases. Biz regularly represents clients in congressional and criminal fraud investigations as well as qui tam, Foreign Corrupt Practices Act (FCPA), False Claims Act (FCA), civil RICO, and employment litigation. She has counseled clients — including boards, audit committees, and management — on the development and implementation of internal compliance and e...

Lisa Banks is a founding partner of Katz Banks Kumin LLP, where she concentrates her practice on sexual harassment and whistleblower retaliation , as well as employment discrimination, Title IX, SEC and CFTC whistleblower tips, and contractual employment disputes. Considered to be one of the leading attorneys of the #MeToo movement, Ms. Banks has successfully litigated employment discrimination and whistleblower protection cases at the trial court and appellate level for over 25 years. Ms. Ba...

Alison Schary is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - First Amendment and Media Law. Alison, 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 Alison is held by other top lawyers in the same geographic and legal practice area.

John Sandweg is a top attorney recognized by Best Lawyers in the practice area(s) of Immigration Law. John, 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 John is held by other top lawyers in the same geographic and legal practice area.

Sam Spiritos’ clients recognize him as a sophisticated transactional attorney, trusted business advisor and an effective negotiator who truly understands their business needs. Over the course of his thirty-plus year career of successful deal-making, Sam has developed not only a masterful legal ability, but also strong relationships with many key players in the real estate markets in DC, Maryland, Northern Virginia and throughout the country. He draws upon this experience (which includes...