Kenneth S. Leonetti

David serves as Managing Partner and is a Tax Partner in Sullivan’s Boston office, bringing over 25 years of experience to his dual roles. Leadership Role As Managing Partner, David collaborates closely with the firm’s Management Committee, partners, and business professionals to advance Sullivan’s vision of becoming a leading global, commercially focused mid-size law firm. He is dedicated to: Cultivating a culture of deep loyalty and high performance Implementing innovative...

James (Jim) Nicholas focuses his practice on federal and state labor and employment issues and litigation for life sciences, tech, private equity and portfolio companies. He is sought after to handle high-stakes matters relating to employee classification, wage and hour, leaves of absence, discrimination and harassment, wrongful termination and the enforcement of noncompetition and nondisclosure agreements, especially in Massachusetts and California. Read full biography: https://www.mwe.com/p...

Jim Barrett, a partner in Goodwin’s Private Equity group, is a business and securities lawyer who represents life sciences and other technology companies as well as venture capital and private equity funds. He regularly counsels boards of directors and general partners on corporate governance matters and guides their businesses through all stages of development. Accordingly, Mr. Barrett concentrates on investment transactions, mergers and acquisitions, securities law and general corpora...

Michael Weinberg is a Partner in Freeman Mathis & Gary’s Boston office. He represents a broad range of clients in all phases of the civil litigation process. Mr. Weinberg is experienced in both trial of cases and alternative dispute resolution, including mediation and arbitration. He handles matters involving insurance law, contracts, professional liability, products liability, construction, medical malpractice, and class action litigation. Mr. Weinberg assists clients on a broad ra...

Kat Saunders Gregor is a lawyer recognized by Best Lawyers in the practice areas of Litigation and Controversy - Tax and Tax Law. Kat Saunders practices law in Boston, Massachusetts Best Lawyers has recognized Kat Saunders Gregor 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 Kat Saunders Gregor is held by other lawyers.

Jeffrey T. Collins is a lawyer recognized by Best Lawyers in the practice area of Litigation - Labor and Employment. Jeffrey T. practices law in Boston, Massachusetts Best Lawyers has recognized Jeffrey T. Collins since 2025. 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 Jeffrey T. Collins is held by other lawyers.

Pat is co-director of the Litigation Department. He has over 35 years of experience representing various parties in complicated contract, trust, real estate, and insolvency-related matters in State and Federal court. He is an active member of the firm's Associate Evaluation Committee and chair of its Pro Bono Committee. Over the years Pat has focused his practice on the litigation and resolution of business disputes, including disputes involving fiduciary duties and creditors’ rights. H...

Michael R. Bertoncini is a principal in the Boston, Massachusetts, office of Jackson Lewis P.C. He is a co-leader of the Healthcare industry group and a member of the Higher Education group. A former Deputy General Counsel, Michael understands first-hand the competing demands and unique challenges in-house counsel must balance. Before joining Jackson Lewis, he was responsible for all labor and employment law matters for the largest fully integrated community care hospital system in New Englan...

Rachel Faye Smith is a lawyer recognized by Best Lawyers in the practice area of Employee Benefits (ERISA) Law. Rachel Faye practices law in Boston, Massachusetts Best Lawyers has recognized Rachel Faye Smith 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 Rachel Faye Smith is held by other lawyers.

Sara Goldman Curley is a lawyer recognized by Best Lawyers in the practice area of Trusts and Estates. Sara Goldman practices law in Boston, Massachusetts Best Lawyers has recognized Sara Goldman Curley since 2020. 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 Sara Goldman Curley is held by other lawyers.