Karen L. Van Kooy

Jeffrey W. Mittleman is a top attorney recognized by Best Lawyers in the practice area(s) of Health Care Law. Jeffrey W., who practices law in Boston, Massachusetts, has been recognized since 2017. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jeffrey W. is held by other top lawyers in the same geographic and legal practice area.

Nancy T. Hegarty is a top attorney recognized by Best Lawyers in the practice area(s) of Trusts and Estates. Nancy 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 Nancy T. is held by other top lawyers in the same geographic and legal practice area.

Dave has over 50 years of corporate and litigation experience, representing clients in the highly regulated insurance industry. He focuses on representing insurance regulators in complex issues, including material insurance company transactions, examinations and reorganizations, as well as counseling insurance companies and insurance agencies. Dave believes that what distinguishes successful lawyers is the ability to understand the client’s objectives in order to act effectively, to com...

A co-leader of the firm's Mergers & Acquisitions Practice, Mary-Laura Greely has extensive experience as a transactional lawyer in mergers and acquisitions involving private and public companies, private equity, venture capital, and general corporate representation. She advises companies on strategic acquisitions and dispositions of companies, assets and divisions, significant debt and equity financings, management buy-outs, corporate governance and succession planning, employment, intell...

Nick’s practice focuses primarily on complex civil litigation, for which he has appeared before the Supreme Court of the United States. He represents corporations, employers, individuals, investment advisers, banks, and others around the world in contract, employment, securities, consumer protection, tort and domestic relations cases, with particular experience in the German-speaking world. He is also the editor of the Art Law Report , a blog that provides timely updates and commentary ...

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Susan L. Barrett is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management. Susan L., 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 Susan L. is held by other top lawyers in the same geographic and legal practice area.

Joel is particularly experienced in the tax structuring of complex business and investment arrangements using partnerships, limited liability companies and Subchapter S corporations. He advises a broad range of private and institutional investors, including real estate investment firms, on a wide variety of U.S. federal income tax matters, including in connection with fund formation matters, the acquisition and disposition of property, structuring debt and equity investments, equity compensat...

Katherine L. Kenney is a top attorney recognized by Best Lawyers in the practice area(s) of Professional Malpractice Law - Defendants. Katherine L., who practices law in Boston, Massachusetts, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Katherine L. is held by other top lawyers in the same geographic and legal practice area.

Mark Seltzer represents corporations, executives and professionals in government investigations and enforcement actions and related complex litigation. What do you focus on? In recent years, I have focused my practice on representing pharmaceutical companies and their executives, medical device manufacturers and their executives, clinical diagnostics manufacturers and other health care providers in government health care fraud investigations and related civil litigation under the federal Fals...