D. Sean "Sean" McMahon

Matthew Knowles is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation and Litigation - Health Care. Matthew, who practices law in Boston, Massachusetts, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Matthew is held by other top lawyers in the same geographic and legal practice area.

A co-leader of the firm's Mergers & Acquisitions Practice, Mary-Laura Greely has extensive experience as a transactional lawyer in mergers and acquisitions involving private and public companies, private equity, venture capital, and general corporate representation. She advises companies on strategic acquisitions and dispositions of companies, assets and divisions, significant debt and equity financings, management buy-outs, corporate governance and succession planning, employment, intell...

Marianne Ajemian is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Marianne, who practices law in Boston, Massachusetts, has been recognized since 2008. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Marianne is held by other top lawyers in the same geographic and legal practice area.

Barbara A. Robb and her partners pioneered the firm’s nationally-ranked executive advocacy practice which focuses on the legal needs of executives, professionals and select businesses in sophisticated employment matters. In 2017, Chambers USA once again named Ms. Robb as a Leader in the Field of Labor & Employment, Mainly Plaintiffs Representation. According to Chambers, she can handle "complex situations and short timeframes" with "the most amazing intellectual horsepower." Clients...

Patrick J. Mitchell is a top attorney recognized by Best Lawyers in the practice area(s) of Venture Capital Law. Patrick J., who practices law in Boston, Massachusetts, has been recognized since 2010. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Patrick J. is held by other top lawyers in the same geographic and legal practice area.

Stephen A. Boyko is a top attorney recognized by Best Lawyers in the practice area(s) of Banking and Finance Law, Bankruptcy and Creditor Debtor Rights / Insolvency and Reorganization Law and Corporate Law. Stephen A., who practices law in Boston, Massachusetts, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Stephen A. is held by other top lawyers in the same geographic and legal practice area.

Margot M. Hammond is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Margot M., who practices law in Boston, Massachusetts, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Margot M. is held by other top lawyers in the same geographic and legal practice area.

Kat Saunders Gregor is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation and Controversy - Tax and Tax Law. Kat Saunders, who practices law in Boston, Massachusetts, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Kat Saunders is held by other top lawyers in the same geographic and legal practice area.

Past President of the Massachusetts Bar Association, Marsha V. Kazarosian continues to serve on the MBA’s Executive Management Board. She has been identified as a Super Lawyer by New England Super Lawyers Magazine each year since 2006. She has been identified as one of the Top 50 Women Lawyers in MA and New England, and a Super Lawyer in Civil Rights, Personal Injury Litigation, and Family Law. In 2006, she was showcased as Massachusetts Super Lawyers Magazine’s cover story, featu...

Lisa G. Arrowood is a Founding Partner of Arrowood LLP. Previously a Founding Partner of Todd & Weld LLP and a partner and associate at Hale and Dorr, she has over thirty years' experience practicing law in the areas of business litigation, employment disputes, medical malpractice, personal injury and legal malpractice. She is well known for her ability to try to a jury, judge or arbitrator breach of contract claims, medical malpractice cases, legal malpractice cases, sexual harassment an...