James M. "Jay" Costan

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

Carolé C. Krogmann is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law and Family Law Mediation. Carolé C., who practices law in McLean, Virginia, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Carolé C. is held by other top lawyers in the same geographic and legal practice area.

Scott Simmer founded the Simmer Law Group in Washington D.C., in 2014, but he’s been practicing law for decades and is a seasoned expert at rooting out deceit and fraud in hidden corners of government programs, education, and healthcare industries. Joining with Baron & Budd in 2018 to form our Washington D.C. office, Mr. Simmer continues to represent whistleblowers bringing qui tam cases of fraud under federal and state False Claims Acts as well as IRS, Securities and Exchange Commi...

Mark J. Riedy is a top attorney recognized by Best Lawyers in the practice area(s) of Mergers and Acquisitions Law. Mark J., 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 Mark J. is held by other top lawyers in the same geographic and legal practice area.

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

Mike Prame is seasoned trial attorney and counselor, with over two decades of experience representing clients in matters related to retirement and healthcare plans. His clientele is largely based in three primary sectors. First, he counsels businesses with underfunded defined benefit pension plans, particularly those plans under scrutiny by the PBGC. Second, Mike advises actuarial, benefit/investment consulting and recordkeeping firms that provide services in connection with retirement and he...

Darlene S. Lesser is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law. Darlene S., who practices law in Fairfax, Virginia, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Darlene S. is held by other top lawyers in the same geographic and legal practice area.

Ruth Wimer is a top attorney recognized by Best Lawyers in the practice area(s) of Employee Benefits (ERISA) Law. Ruth, who practices law in Washington, District of Columbia, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ruth is held by other top lawyers in the same geographic and legal practice area.

Frank J. Pergolizzi is a top attorney recognized by Best Lawyers in the practice area(s) of Transportation Law. Frank 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 Frank J. is held by other top lawyers in the same geographic and legal practice area.

Stephanie S. Lim represents independent power producers, power marketers, trade associations, and others in a wide variety of regulatory matters before the Federal Energy Regulatory Commission (FERC), courts of appeal and state public utility commissions. She counsels clients on the structure of electricity markets and the design of capacity markets. Stephanie also represents private equity clients and power producers on transactional matters, including mergers and acquisitions. Read full bio...