Patrick T. Ryan

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...

Megan G. Pimentel is a lawyer recognized by Best Lawyers in the practice area of Medical Malpractice Law - Defendants. Megan G. practices law in Boston, Massachusetts Best Lawyers has recognized Megan G. Pimentel since 2022. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Megan G. Pimentel is held by other lawyers.

Cheryl Pinarchick is the managing partner of the firm's Boston office and co-chair of the Pay Equity Practice Group. Cheryl has extensive experience handling all aspects of employment litigation, including trials in state and federal court throughout the United States. She has successfully defended employment lawsuits alleging wrongful termination, employment discrimination and harassment, wage and hour violations, retaliation and other related claims. She has also successfully prosecuted tra...

David J. Santeusanio is a lawyer recognized by Best Lawyers in the practice areas of Employment Law - Management, Labor Law - Management and Litigation - Labor and Employment. David J. practices law in Boston, Massachusetts Best Lawyers has recognized David J. Santeusanio since 2018. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which David J. Santeusanio is he...

Michael A. Leon is a lawyer recognized by Best Lawyers in the practice area of Environmental Law. Michael A. practices law in Boston, Massachusetts Best Lawyers has recognized Michael A. Leon since 1995. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Michael A. Leon is held by other lawyers.

A. John Pappalardo focuses his international practice on federal white collar criminal defense, representing individuals and corporations in federal and state investigations. John has conducted many significant representations, including the landmark case in which he represented former YUKOS Oil Company CEO Mikhail Khodorkovsky, who was on trial for fraud and tax evasion. Additionally, John's clients include numerous businesses and corporations, medical doctors, attorneys, a U.S. Congressman ...

Lew is the director of Sullivan's Corporate Department in Boston. His practice is focused on a number of transactional areas. He regularly represents public and private companies in equity and debt financings, joint ventures, domestic and international mergers and acquisitions, and general corporate matters. Lew also represents financial institutions in secured and unsecured credit facilities. His clients consist of major financial institutions, private equity groups, family-owned businesses,...

Christina Lewis is a lawyer recognized by Best Lawyers in the practice areas of Employment Law - Management and Litigation - Labor and Employment. Christina practices law in Boston, Massachusetts Best Lawyers has recognized Christina Lewis since 2024. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Christina Lewis is held by other lawyers.

Chris has a wide-ranging practice, which has included everything from sophisticated estate planning to multi billion dollar mergers and acquisitions. His primary experience has been in representing family or employee owned businesses and their shareholders in all aspects of federal income, gift and estate taxation. Chris also has substantial experience in the taxation of mutual funds and private investment vehicles.

Phyllis E. Federico is a lawyer recognized by Best Lawyers in the practice area of Family Law. Phyllis E. practices law in Boston, Massachusetts Best Lawyers has recognized Phyllis E. Federico since 2011. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Phyllis E. Federico is held by other lawyers.