P. Ryan Messier

John Partigan is known for his extensive experience in public and private company mergers and acquisitions, joint ventures and strategic alliances, capital markets transactions, and corporate governance. He is the team leader of the firm’s national Securities practice. My focus My focus is on helping our clients achieve their goals, by efficiently and effectively structuring and executing on transformative transactions, including acquisitions, dispositions, debt or equity financings, in...

S. Mohsin Reza is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. S. Mohsin, who practices law in McLean, Virginia, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which S. Mohsin is held by other top lawyers in the same geographic and legal practice area.

Caroline P. Mayhew is a top attorney recognized by Best Lawyers in the practice area(s) of Native American Law. Caroline P., 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 Caroline P. is held by other top lawyers in the same geographic and legal practice area.

Area of Emphasis Jim Curry is the Managing Shareholder of the Firm’s Washington, D.C. office. Jim is an energy lawyer with years of experience in government service and private practice helping clients navigate difficult regulatory and strategic challenges throughout the energy sector. His clients include pipelines, utilities, energy producers, LNG terminals, investors, technology companies, chemical makers, and hydrogen infrastructure developers. Jim takes a pragmatic, business-minded ...

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

Joel Swearingen is an associate in the firm’s Project Finance and Public Finance practice group, representing issuers, underwriters, and borrowers on a variety of public finance transactions. He also has substantial experience in the field of tax withholding and information reporting, both internationally and domestically. What do you focus on? My practice includes representing clients on tax matters present in connection with public finance transactions. I also advise clients on the in...

Jeffrey N. Gibbs joined Hyman, Phelps & McNamara in 1990. Over the course of his career, he has developed an extensive knowledge of FDA law, from product approvals to advertising and promotion, and enforcement actions. In recent years, Mr. Gibbs has focused primarily on advising medical device and IVD companies, as well as pharmacies. Based on his extensive experience working with the industry on FDA issues, and previously for FDA, he provides efficient and insightful guidance. He has wor...

Jill Grant, the principal member of Jill Grant & Associates, LLC, has extensive background in environmental, administrative, and federal Indian law. Before starting her own law firm, Ms. Grant was a partner in private practice, representing Indian tribes on environmental and federal Indian law issues. Previously Ms. Grant wasan attorney at the U.S. Environmental Protection Agency, Office of General Counsel, where she was on the team that drafted the Clean Air Act Amendments of 1990 and wo...

Marc S. Martin is a top attorney recognized by Best Lawyers in the practice area(s) of Communications Law. Marc S., who practices law in Washington, District of Columbia, has been recognized since 2017. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Marc S. is held by other top lawyers in the same geographic and legal practice area.

For more information, please visit https://www.gibsondunn.com/lawyer/hungar-thomas-g/ .