Richard L. "Rick" Treanor Ph.D.

Craig de Ridder is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Craig de, who practices law in Washington, District of Columbia, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Craig de is held by other top lawyers in the same geographic and legal practice area.

For more information, please visit www.gibsondunn.com/lawyer/walker-helgi-c/ .

Nicholas A. Giannasca is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law. Nicholas 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 Nicholas A. is held by other top lawyers in the same geographic and legal practice area.

Tom Vincent is a Partner at Pierson Ferdinand and is a Certfied Information Systems Security Professional, a Certified Regulatory Compliance Manager, and a Certified Information Privacy Professional/United States. Tom helps organizations navigate the complex legal landscape of cybersecurity, data privacy, compliance, and corporate governance with practical, business-minded legal counsel. Drawing on his background as a former banking executive and compliance officer, he brings a strategic, pre...

Paul J. Kennedy is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Labor and Employment. Paul J., 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 Paul J. is held by other top lawyers in the same geographic and legal practice area.

Kathryn Deckert is passionate about guiding clients through what are often challenging, emotionally fraught cases. Kathryn focuses her practice on issues related to divorce, child custody and support, domestic violence and pre- and post-nuptial agreements. Kathryn is motivated by a desire to help her clients move beyond difficult times and into more positive phases of their lives. She wants them to feel heard and supported throughout their case and she works assiduously and compassionately to...

Sanford K. Ain is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law and Real Estate Law. Sanford K., who practices law in Washington, District of Columbia, has been recognized since 1983. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Sanford K. is held by other top lawyers in the same geographic and legal practice area.

Jeffrey B. Stern serves as co-leader of the Firm's Global Hospitality, Resort and Timeshare Team. He concentrates his practice in the areas of real estate development, timeshare and hospitality with an emphasis on the resort development and finance industries. His clients consist of a wide variety of owners, developers, lenders, financial institutions, and marketing and management companies, ranging in size from entrepreneurial ventures to Fortune 100 corporations in connection with the follo...

Ryan P. O’Quinn Ph.D. is a top attorney recognized by Best Lawyers in the practice area(s) of Biotechnology and Life Sciences Practice. Ryan P., who practices law in Reston, Virginia, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ryan P. is held by other top lawyers in the same geographic and legal practice area.

Leon B. Greenfield has an exceptionally wide breadth of experience representing clients in complex antitrust-related matters. He has represented clients in cutting edge Section 2 litigation and agency matters. He has secured antitrust clearance for major acquisitions, litigated cases in federal and state court and counseled clients on many types of antitrust issues. Mr. Greenfield also has broad experience in matters outside the antitrust area, including securities regulatory matters and liti...