Brian J. O'Connor

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...

Mark J. Macenka is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law, Information Technology Law, Mergers and Acquisitions Law and Venture Capital Law. Mark J., who practices law in Boston, Massachusetts, has been recognized since 2007. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mark J. is held by other top lawyers in the same geographic and legal practice area.

Sarah A. Solomon is a top attorney recognized by Best Lawyers in the practice area(s) of Biotechnology and Life Sciences Practice. Sarah A., 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 Sarah A. is held by other top lawyers in the same geographic and legal practice area.

Tamsin is an employment lawyer and business litigator, and serves as outside general counsel to diverse nonprofits and private schools. She has extensive experience representing businesses, executives and other high-level professionals in a full range of employment-related issues from recruitment through termination. Tamsin frequently conducts workplace investigations, provides trainings on diversity and harassment, and advises employers regarding employee handbooks, employment audits, and wo...

Daniel Halston focuses on securities litigation, general commercial litigation and administrative law disputes. He has represented numerous public and private high technology, life sciences, and financial services companies and their officers and directors in a wide range of complex litigation matters, including securities fraud class actions, derivative litigation, mergers and acquisitions disputes, false claims act actions, breach of fiduciary duty claims, investment advisor claims, closely...

Stephen Riden is a commercial litigator who represents corporate and individual clients in a wide array of disputes across the country. Stephen has extensive experience litigating business disputes involving breach of contract, fraud, unfair competition, trade secrets, and noncompete agreements. He has represented companies in a variety of governmental investigations. Stephen also has substantial experience representing owners involved in intra-corporate disputes, including shareholder litiga...

Laura C. Hodges Taylor is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law, Leveraged Buyouts and Private Equity Law, Mergers and Acquisitions Law and Private Funds / Hedge Funds Law. Laura C., who practices law in Boston, Massachusetts, has been recognized since 2001. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Laura C. 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.

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.

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