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Gary S. Matsko

Trusted business attorney serving Boston.

4
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Gary S. Matsko is an attorney based in Boston, MASSACHUSETTS. The practice focuses on Business and Litigation. Currently practicing at Davis, Malm & D'Agostine PC.

Based in
Boston, MASSACHUSETTS
Experience
attorney
Known for
Business · Litigation
  • Handles Business and Litigation matters from Boston, MASSACHUSETTS.
  • Recognized with Best Lawyers in America — Commercial Litigation (2026).

About Gary S. Matsko: Gary S. Matsko is an attorney based in Boston, MASSACHUSETTS. The practice focuses on Business and Litigation. Currently practicing at Davis, Malm & D'Agostine PC.

Areas of practice

Practice focus

Gary S. Matsko represents clients in Boston, Massachusetts across the following areas of law. Each area links to other verified attorneys with the same focus.

Biography

About Gary S. Matsko

Gary is a trial attorney, representing individuals and businesses in civil litigation and before regulatory agencies, including the Securities and Exchange Commission. He represents parties in actions throughout New England, in several U.S. federal courts and in arbitration proceedings. Gary has litigated cases involving claims arising from business sales and acquisitions, securities claims, employment disputes, shareholder disputes, environmental matters and other business matters.

Gary’s prior roles as Enforcement Branch Chief for the New England Region of the Securities and Exchange Commission and as legal assistant to an SEC Commissioner taught him to look beyond the obvious solutions to service clients creatively and thoroughly.

Recent matters include:

  • Successfully brought two SEC investigations to conclusion for a public company without enforced action.
  • Obtained a jury verdict worth approximately $6 million for a NYSE-listed company after a three-week trial in Delaware Superior Court in a breach of contract action arising out of defendant’s failure to honor an environmental indemnification. Prevailed in Delaware Supreme Court appeal of the case.
  • Successfully brought SEC investigations of the CFO of a public company without enforced action.
  • Successfully prosecuted breach of contract, negligent supervision, failure to supervise and vicarious liability claims against a broker and brokerage house before a Financial Industry Regulatory Authority (FINRA) arbitration panel.
  • Represented former senior officer of major mutual fund complex in SEC investigation and enforcement litigation.
  • Represented outside director of a public company in SEC enforcement litigation.
  • Represented former public company employee in an SEC revenue recognition investigation.
  • Represented trust beneficiary in claims against trustees for misuse and diversion of trust assets.
  • Represented LLC and majority members in suit with respect to diversion of business opportunity and fiduciary breaches.
  • Represented the sellers of two major hospitals in prosecuting their suit against the buyer for breach of post-closing contract and third party contract obligations resulting in a $6 million judgment for our clients.
  • Represented a senior securities trader for a major investment company complex in an SEC investigation and enforcement action.
  • Successfully defended a local businessman in an SEC insider trading investigation.
  • Represented the sellers of a sports promotion and agency business with respect to the buyer’s failure to account to clients for post-closing revenues.
  • Represented the majority shareholder and members of the board of directors of a golf course enterprise in defending against claims advanced by a minority shareholder.

Credentials

Education

  • Denison University

    B.A.

  • New York University

    J.D.

Jurisdictions

Bar admissions

  • Massachusetts, Massa

    ACTIVE

  • Massachusetts, Unite

    ACTIVE

  • New York, Southern a

    ACTIVE

  • Massachusetts, Unite

    ACTIVE

Recognition

Awards & honors

  • Best Lawyers in America — Commercial Litigation

    2026

  • Best Lawyers in America — Additional Areas of Practice:

    2026

  • Best Lawyers in America — Litigation - Intellectual Property

    2026

  • Best Lawyers in America — Litigation - Real Estate

    2026

  • Best Lawyers in America — Litigation - Securities

    2026

  • Best Lawyers in America — Awards:

    2026

  • Best Lawyers in America — Massachusetts Super Lawyers 2004-2005, 2007, 2010-2024

    2026

  • Best Lawyers in America — Peer Review AV Preeminent™ rated by Martindale-Hubbell, the highest bestowed rating

    2026

  • Best Lawyers in America — ©, 2023-2026

    2026

  • Best Lawyers in America — Named a Massachusetts “Go To Business Litigation Lawyer” by

    2026

  • Best Lawyers in America — Massachusetts Lawyers Weekly

    2026

  • Best Lawyers in America — , 2022

    2026

Locations

Office locations

Main office

Davis, Malm & D'Agostine PC

255 State Street, 11th Floor

Boston, Massachusetts 02109

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Client feedback

Client reviews

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Frequently asked

Common questions

  • What areas of law does Gary S. Matsko practice?

    Gary S. Matsko focuses on Business and Litigation.

  • Where is Gary S. Matsko located?

    Gary S. Matsko primarily serves clients in Boston, Massachusetts, with an office at 255 State Street, 11th Floor.

  • Is Gary S. Matsko a verified attorney?

    Gary S. Matsko's profile is listed but has not yet been claimed by the attorney. Verification status is pending.

  • How can I schedule a consultation with Gary S. Matsko?

    You can book a consultation through LawyersListed directly from this page. Initial outreach can also be made by phone at 617-367-2500.