Sarah Mahmood

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

David B. Torchinsky is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law and Trusts and Estates. David B., who practices law in Rockville, Maryland, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David B. is held by other top lawyers in the same geographic and legal practice area.

Debra D. Roby is an accomplished attorney at Washington Energy Law LLP, located in Washington, District of Columbia. With over two decades of experience, she represents a diverse range of stakeholders in the electric industry. She frequently appears before the Federal Energy Regulatory Commission (FERC) on matters such as transmission and energy market tariff and rate filings, merger proceedings, rulemakings, and hydroelectric licensing and compliance. Beyond her work with FERC, she provides ...

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

Sara W. Koblitz advises FDA-regulated clients on a range of issues with a particular focus on Hatch-Waxman patent and exclusivity, biosimilars, and the Orange Book. She helps drug and device manufacturers in various stages of product development and guides clients through the applicable regulatory requirements with respect to applications and submissions, device classification, potential exclusivities, promotional issues, and post-marketing requirements. Ms. Koblitz also counsels cosmetics, f...

Sol Wisenberg has four decades of experience serving as lead counsel in complex federal white-collar investigations and jury trials. He represents individuals and businesses facing federal criminal, regulatory, and civil exposure, including matters involving parallel proceedings, fraud-related allegations, and federal sentencing. A substantial part of Sol’s practice focuses on helping clients reduce criminal exposure and avoid indictment during government investigations, civil litigatio...

For more information, please visit www.gibsondunn.com/lawyer/diamant-michael/ .

Daniel T. Chaudoin is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Securities. Daniel T., 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 Daniel T. is held by other top lawyers in the same geographic and legal practice area.

Mustafa Ostrander is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Regulatory Law. Mustafa, 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 Mustafa is held by other top lawyers in the same geographic and legal practice area.

Fred Goldberg is co-head of the firm’s Tax Group and global co-chair of the firm’s Diversity Committee. Mr. Goldberg first joined Skadden in 1986, following two years as chief counsel of the Internal Revenue Service. From 1989 until 1992, Mr. Goldberg served as commissioner of the IRS, and during 1992 he served as assistant secretary of the Treasury for Tax Policy. He returned to Skadden in December 1992. Working with his Tax Department colleagues in Skadden’s Washington, Ne...