Arthur A. Cohen

Mark A. Grider is a top attorney recognized by Best Lawyers in the practice area(s) of Criminal Defense: White-Collar. Mark A., 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 Mark A. is held by other top lawyers in the same geographic and legal practice area.

Benjamin Grosz is a top attorney recognized by Best Lawyers in the practice area(s) of Employee Benefits (ERISA) Law and Tax Law. Benjamin, who practices law in Washington, District of Columbia, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Benjamin is held by other top lawyers in the same geographic and legal practice area.

When clients work with David Feldman they benefit from his 50 years of experience – what he has done right as well as lessons learned and knowledge gained. The guiding principle from when he and partner, Dexter Odin, founded the firm was “the client comes first, second, and third.” That principle remains today and has been the foundation of decades-long relationships with clients. Currently, David’s practice focuses on real estate and banking issues where his practical...

Recognizing that many people meet Heather Mehigan during times of significant personal and family turmoil, her legal insight and sincerity puts them at ease. A tireless advocate for her clients, she assesses the circumstances of each matter and then works collaboratively with all parties to affect the best possible resolution. Heather instills a sense of confidence in her clients, and opposing counsel respect her fair and firm efforts to achieve consensus. Her areas of focus include fiduciary...

Sarah Moore Johnson is a top attorney recognized by Best Lawyers in the practice area(s) of Trusts and Estates. Sarah Moore, 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 Sarah Moore is held by other top lawyers in the same geographic and legal practice area.

Jeff represents every regulatory and transactional concern of equipment manufacturers and government contractors, as well as wireless, video and data providers, and end-users. He represents equipment manufacturers with respect to all applicable FCC regulations, including those governing importation, emissions compliance, equipment authorization/labeling, and marketing. Jeff has extensive experience in matters relating to experimental licensing for military, homeland security and other high-te...

Diara M. Holmes serves as co-chair of the firm's Tax-Exempt Organizations Practice. She counsels tax-exempt organizations, including large public charities; colleges, universities and other higher education organizations; foreign charities and their U.S. affiliates; associations; government instrumentalities; social welfare organizations; and religious organizations on a broad range of tax compliance and governance issues. She advises nonprofit and for-profit organizations on structuring a va...

Kristen Kugel is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law. Kristen, who practices law in Fairfax, Virginia, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Kristen is held by other top lawyers in the same geographic and legal practice area.

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 ...

The cornerstone of Jimmy’s practice is to help people by solving their problems and contributing to their growth and success. His 50 years of legal experience is complemented by an in-depth background in finance, including a number of years working for the IRS as a Revenue Agent and Tax Law Specialist, as well as several years as an investment banker at Legg Mason. With a commitment that the client’s interests always come first, Jimmy takes ownership of and responsibility for thei...