Atty. 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.
Profile Summary
About Gary S. Matsko at a glance
Gary S. Matsko is a business and litigation attorney based in Boston, Massachusetts, practicing at Davis, Malm & D'Agostine PC. Admitted to practice in Massachusetts, United States Court of Appeals for the First and Second Circuits, New York, Southern and Eastern Districts of New York, Massachusetts, United States District Court for Massachusetts, and Massachusetts, Massachusetts. Educated at Denison University (B.A.) and New York University (J.D.). Recognitions include Best Lawyers in America — Commercial Litigation (2026), Best Lawyers in America — Additional Areas of Practice: (2026), and Best Lawyers in America — Litigation - Intellectual Property (2026). Serands clients in Boston, MA and the surrounding metropolitan area.
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About
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.
Practice Areas Explained
Gary S. Matsko's Areas of Practice
Each practice area below reflects the types of cases Gary S. Matsko handles, with a brief overview of what that area of law covers.
Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.
Gary S. Matsko is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Massachusetts →
Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.
Gary S. Matsko is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in Massachusetts →
Jurisdictional Context
Why local counsel matters in Massachusetts
Practicing law in Massachusetts. Legal matters in Massachusetts are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Boston are typically filed in the local municipal court or the appropriate Massachusetts state district court, depending on subject matter and amount in controversy. An attorney licensed in Massachusetts brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Massachusetts courts without local counsel or pro hac vice admission.
Looking for additional Massachusetts attorneys? Browse all attorneys in Boston or all attorneys in Massachusetts.
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