Sarah M. Nyren

Attorney Jamie Sultan has 40 years of experience fighting for clients facing serious criminal charges in both state and federal courts. His practice includes fending off charges against clients under investigation, defending clients who have been charged, and prosecuting appeals and post-trial motions on behalf of clients following conviction. He has appeared in trial and appellate courts throughout Massachusetts and in seven other states. Jamie has handled a number of high-profile cases. Som...

Michael J. McGrail is a top attorney recognized by Best Lawyers in the practice area(s) of Venture Capital Law. Michael J., 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 Michael J. is held by other top lawyers in the same geographic and legal practice area.

Bill Caporizzo is a leading lawyer and CPA who helps both private and public companies navigate the complex tax issues they often face. For more than 35 years, Mr. Caporizzo has been regularly called upon to represent clients on the tax implications of domestic and cross-border corporate mergers, spin-offs, acquisitions and dispositions, partnerships and joint ventures, and restructurings. He also advises corporate clients on capital market transactions, venture financings and fund formations.

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

Mike Sartor is a corporate partner in the Boston office of Kirkland & Ellis LLP. Mike focuses on representing private equity sponsors as well as public and private companies in connection with mergers and acquisitions. Mike also has substantial experience representing private equity firms in their fund formation activities and strategic transactions and representing public and private companies in general corporate law matters. Representative clients include 3i Group plc, Cerberus Capital...

Sean is a corporate partner in Kirkland’s Investment Funds Group who focuses on representation of investment managers in all aspects of their business and operations, with a particular emphasis on formation of private investment funds, and in structuring and execution of secondary transactions. He is described by clients in Chambers USA as “clearly a gem” who is “hands-on, precise and articulate” and “very practical and business-minded.” Chambers Glob...

William D. Collins is a top attorney recognized by Best Lawyers in the practice area(s) of Biotechnology and Life Sciences Practice and Corporate Law. William D., 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 William D. is held by other top lawyers in the same geographic and legal practice area.

Ronald Eisenstein focuses his practice on advising biotechnology and pharmaceutical companies, research institutes, and universities on patent portfolio management, post-issuance strategies, dispute management and due diligence. He is also a member of the firm’s Life Sciences team. My focus I focus my practice on helping clients devise and execute strategies for managing their patent portfolios as well as navigate the changing patent landscape. I leverage my scientific background, exten...

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...

Alexandra L. Pichette is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management and Litigation - Labor and Employment. Alexandra L., who practices law in Boston, Massachusetts, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Alexandra L. is held by other top lawyers in the same geographic and legal practice area.