CMM | Campolo, Middleton, McCormick, LLP

When businesses face legal issues, owners have to make important business decisions. David Green helps clients navigate both.

An award-winning attorney and business leaderDavid Green approaches legal issues through the broader context of each client’s individual business. He advises business owners, entrepreneurs, executives, family-owned businesses, and closely held companies on the legal and business issues that shape the future of their organizations. His practice includes commercial litigation, corporate transactions, construction matters, shareholder disputes and business advisory.

Known for his practical, business-focused approach, David takes the time to understand each client’s objectives before developing a strategy. He helps clients anticipate risk, resolve disputes efficiently, and make informed decisions that support long-term success.

David has represented clients in high-stakes shareholder disputes, complex construction matters, commercial litigation, trials, appeals, arbitration, and mediation in New York’s state and federal courts, including the Commercial Division. He also plays an active leadership role at CMM, helping lead attorney development and the firm’s technology and artificial intelligence initiatives.

David also serves as President of the Sea Cliff Village Library Board of Trustees, where he has led long overdue policy and bylaw updates in support of one of the North Shore’s leading community institutions.

Whether advising a growing business, negotiating a transaction, or resolving a complex dispute, his focus is always on helping clients make informed decisions that position them for long-term success.

David is based in CMM’s Westbury and Ronkonkoma offices.

Education

  • University of Delaware, B.A.
  • University of Miami School of Law, J.D.

Admissions

  • New York
  • United States District Court, Southern District of New York
  • United States District Court, Eastern District of New York

Boards, Associations, and Leadership

  • President of the Board of Trustees, Sea Cliff Village Library
  • Member, Gold Coast Business Association
  • Member, Nassau County Bar Association

Recognitions

  • Long Island Press Power List Honoree, Schneps Media (2026)
  • Top Business Leader of Nassau County, Blank Slate Media (2024)
  • Top Lawyers of Long Island, Herald Community Newspapers (2023)
  • Super Lawyers  (2026)
  • Super Lawyers Rising Stars (2018-2025)

In the News

Articles

Lectures & Presentations

HIA-LI LI Tech4Business Committee: AI Without Guardrails: Legal & Cyber Risks for Modern Business

CMM CLE Series, “Employment Litigation Case Study”