Curtis R. Powell

David serves as Managing Partner and is a Tax Partner in Sullivan’s Boston office, bringing over 25 years of experience to his dual roles. Leadership Role As Managing Partner, David collaborates closely with the firm’s Management Committee, partners, and business professionals to advance Sullivan’s vision of becoming a leading global, commercially focused mid-size law firm. He is dedicated to: Cultivating a culture of deep loyalty and high performance Implementing innovative...

Michael T. Siekman is a top attorney recognized by Best Lawyers in the practice area(s) of Patent Law. Michael T., 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 Michael T. is held by other top lawyers in the same geographic and legal practice area.

Peter J. Antoszyk 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, Commercial Litigation and Commercial Transactions / UCC Law. Peter J., who practices law in Boston, Massachusetts, has been recognized since 2016. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Peter J. is held by other top lawyers in the same geographic ...

Douglas Brayley is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Labor and Employment. Douglas, who practices law in Boston, Massachusetts, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Douglas is held by other top lawyers in the same geographic and legal practice area.

Cynthia T. Mazareas is a top attorney recognized by Best Lawyers in the practice area(s) of Biotechnology and Life Sciences Practice. Cynthia T., who practices law in Boston, Massachusetts, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Cynthia T. is held by other top lawyers in the same geographic and legal practice area.

Regina M. Pisa is a top attorney recognized by Best Lawyers in the practice area(s) of Banking and Finance Law and Corporate Law. Regina M., who practices law in Boston, Massachusetts, has been recognized since 2001. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Regina M. is held by other top lawyers in the same geographic and legal practice area.

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Mr. Kajko is an experienced trial attorney who concentrates his practice in the litigation of complex domestic relations, custody, civil and criminal cases in all trial courts of the Commonwealth including the Probate and Family Court, Superior Court and District Court. He has handled divorce cases with marital estates valued over seventy million dollars. Mr. Kajko also represents clients in the negotiation and drafting of prenuptial and post-nuptial agreements. He represents business executi...

Vic counsels clients on regulatory compliance and permitting matters in all areas of environmental and land use law. He represents clients with respect to environmental, zoning and other land use aspects of business and real estate transactions and has worked on various major Boston area developments, including waterfront projects. Vic oversees environmental due diligence for acquisitions and financings of residential, industrial and commercial properties throughout the country, representing ...

Richard Kanoff is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law, Energy Regulatory Law, Environmental Law and Real Estate Law. Richard, who practices law in Boston, Massachusetts, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Richard is held by other top lawyers in the same geographic and legal practice area.