Sean P. O'Neill

Stephanie A. Richards is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law. Stephanie A., 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 Stephanie A. is held by other top lawyers in the same geographic and legal practice area.

Henry concentrates in all facets of estate planning, trust and estate administration, estate, gift and generation-skipping tax planning, prenuptial agreements, charitable giving planning including establishing and representing charitable trusts, foundations and other non-profit organizations.

Adam A. Larson is a top attorney recognized by Best Lawyers in the practice area(s) of Mass Tort Litigation / Class Actions - Defendants, Personal Injury Litigation - Defendants and Product Liability Litigation - Defendants. Adam A., who practices law in Boston, Massachusetts, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Adam A. is held by other top lawyers in the same geographic and legal practice area.

David Apfel is a partner in Goodwin's Complex Business Litigation and Dispute Resolution Department. Mr. Apfel is a former federal prosecutor who specializes in white collar criminal defense, SEC and other government investigations, internal corporate investigations, and bet-the-company civil business litigation. Mr. Apfel is also the founder and chair of the firm’s Gaming & Gambling practice, and the founder and co-chair of the firm’s Cannabis practice. He has been regularly ...

Thomas has over 20 years of experience representing industry leaders in life sciences. He is internationally recognized for his experience in creating, implementing and monetizing effective patent strategies. He represents public and private companies, investors and academic institutions in the life sciences arena. His portfolio of life sciences companies spans diagnostics, medical devices, life science tools and technology platforms, genomics and therapeutics. Before joining Sullivan, Tom wa...

Jerome (Jerry) B. Tichner focuses his practice on representing hospitals and health systems in transactional matters, including mergers, acquisitions, joint ventures, affiliations and dispositions. He also devotes a significant portion of his practice to representing private equity firms and their platform companies with respect to the acquisition and divestiture of health care-related companies and assets. In recent years, Jerry has led or played a leading role in transactions involving the ...

Victor G. Milione is a partner and serves as the Practice Group Leader for the Financial Restructuring & Bankruptcy group and as a member of the firm’s litigation, real estate and business departments. Mr. Milione has over 27 years of extensive experience representing various parties in insolvency work throughout the country and internationally. What do you focus on? Today I focus my practice on counseling the nation’s leading real estate financing and investment firms with mu...

Michael S. Hines is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. Michael S., 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 Michael S. is held by other top lawyers in the same geographic and legal practice area.

For nearly 30 years, he has dedicated his energy to representing entrepreneurs and investors in venture-backed and pre-venture businesses. He works with companies from inception through exits that typically involve complex merger and acquisition transactions. David’s clients range from local start-up companies to multinational businesses, investors and entrepreneurs around the world that are active buying, selling and financing companies. Building on his core expertise in the technology...

Timothy F. Silva is a top attorney recognized by Best Lawyers in the practice area(s) of Private Funds / Hedge Funds Law. Timothy F., 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 Timothy F. is held by other top lawyers in the same geographic and legal practice area.