John E. Rattigan, Jr.

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

Jon M. Herzog is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law and Leveraged Buyouts and Private Equity Law. Jon M., who practices law in Boston, Massachusetts, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jon M. is held by other top lawyers in the same geographic and legal practice area.

Armand is a partner in the M&A/Private Equity Practice Group. He serves as lead counsel to large- and mid-market buyout funds and to public and privately-owned companies in a variety of complex transactions, including leveraged acquisitions, mergers, divestitures, joint ventures, corporate restructurings, equity financings and workouts. Armand has broad experience counseling clients in a variety of industries, including healthcare, consumer, financial services, business and information se...

With over three decades of litigation and transactional experience, Jeff is widely recognized as one of the top environmental lawyers in the country. Clients seek him out to solve complex environmental law challenges. Some of the largest global companies rely on Jeff’s insights and strategic guidance. Clients praise him as “the top environmental attorney you will find in Boston” and say his “judgment on sensitive political issues is invaluable.” Jeff is ranked Ba...

David H. Saltzman is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. David H., who practices law in Boston, Massachusetts, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David H. is held by other top lawyers in the same geographic and legal practice area.

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

Harvey practices primarily in the areas of international and domestic corporate finance and domestic corporate governance, investment management law, securities law, including the Investment Company Act and Investment Advisers Act, and corporation, limited liability company and partnership law. Harvey counsels domestic and foreign clients, and advises clients respecting domestic and offshore investments and transactions. He also counsels on CFIUS compliance in international transactions follo...

Stephen W. Bernstein specializes in e-health, “big data,” deployment of electronic health record systems and health-related matters affected by the internet and the Health Insurance Portability and Accountability Act (HIPAA), as well as private equity investments, mergers, acquisitions, affiliations and joint ventures involving technology, hospitals and physicians. Stephen is the global head of McDermott's Health Practice. Please visit our website for more on Stephen's biography: ...

Andrea Peraner-Sweet is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation and Personal Injury Litigation - Defendants. Andrea, who practices law in Boston, Massachusetts, has been recognized since 2013. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Andrea is held by other top lawyers in the same geographic and legal practice area.

David M. McIntosh is a top attorney recognized by Best Lawyers in the practice area(s) of Biotechnology and Life Sciences Practice and Litigation - Intellectual Property. David M., who practices law in Boston, Massachusetts, has been recognized since 2013. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David M. is held by other top lawyers in the same geographic and legal practice area.