Gregory Wiessner

Gregory Wiessner is Senior Counsel at Bernstein Shur in Portland, Maine whose practice focuses on corporate governance, securities, mergers and acquisitions, financing, and executive transitions. He advises boards, executives, public companies, private companies, and nonprofit organizations on governance, disclosure, capital markets, and strategic transactions. His work includes SEC reporting, corporate governance frameworks, M&A, financings, investor relations, executive transitions, and compensation programs.

Wiessner earned a J.D. from New York Law School and a B.A. from Columbia University, and completed Boston University’s Executive MBA Leadership Program. His education is complemented by more than 20 years of corporate and securities experience in private practice and in-house roles. This background supports Wiessner’s legal analysis and problem solving in corporate governance and securities law, including work that requires close attention to detailed facts, governing rules, and practical consequences.

Wiessner’s experience includes public-company disclosure and reporting, governance design, capital-markets counseling, mergers and acquisitions, financing, executive transitions, and stakeholder communications. Wiessner previously served in-house at a NYSE-listed fintech during a period of significant growth, giving him direct experience aligning legal, governance, disclosure, and business strategy. Through these matters, Wiessner helps clients assess legal options, manage risk, and move through transactions, disputes, administrative processes, or litigation as the situation requires.

Gregory Wiessner brings both private-practice and in-house executive experience to boardroom and C-suite legal questions. He also mentors through Columbia College and New York Law School programs. In serving boards, executives, and companies, Wiessner brings practical judgment and subject-matter knowledge to the issues presented. Wiessner helps boards and companies manage governance, disclosure, transactions, and leadership changes with advice grounded in the specific facts and legal framework of each matter.

Law Office Affiliations

• Attorney, Bernstein, Shur, Sawyer & Nelson, P. A .
• Member, Maine State Bar Association
• Member, New Jersey State Bar Association
• Member, New York State Bar Association
• Mentor, New York Law School

Licensed State

• Maine
• New Jersey
• New York

Education

• New York Law School
  Juris Doctor (JD)
• Columbia University
  Bachelor of Arts (BA)
• Boston University
  Executive MBA Leadership Program

Awards & Badges