With courtroom successes for Fortune 500 companies, regional businesses, insurers, and entrepreneurs, Sig is a trial lawyer with more than twenty years of hearings to his credit, including jury trials in state and federal court, multi-week complex arbitrations, and high-stakes administrative hearings. In 2017, Sig won a $13.6 million jury verdict in a complex business case. He has been counsel of record in many state and federal reported judicial decisions, including more than twenty-five appeals.

Sig's environmental law practice includes toxic torts litigation, state and federal environmental enforcement defense, environmental damage and remediation claims, defense of natural resource damage claims, and zoning and land use litigation and appeals.

Active in securities disputes, Sig handles claims involving broker-dealers, securities fraud, and investment malpractice. He has participated as counsel in numerous Financial Industry Regulatory Authority (FINRA) arbitrations and in securities litigation in state and in federal court.

In his media law practice, Sig represents the news media in First Amendment matters, defamation and privacy, state and federal freedom of information, newsgathering and cyber law. He has also served as counsel in copyright, trademark, and advertising matters.

Sig handles a range of complex state and federal litigation and appeals, including product liability claims, construction litigation, commercial litigation and arbitration, civil rights and constitutional litigation, professional liability, and unfair trade practices and administrative matters.


  • Cornell University Law School (J.D., 1997)
  • Colby College (B.A., 1994)


  • Maine
  • Massachusetts
  • New Hampshire
  • New York
  • U.S. District Court, District of Maine
  • U.S. District Court, District of New Hampshire
  • U.S. District Court, District of Massachusetts
  • U.S. District Court, Western District of Michigan
  • U.S. Court of Appeals, First Circuit
  • U.S. Supreme Court

Professional Affiliations

  • American Bar Association
  • Maine State Bar Association
  • New Hampshire Bar Association
  • Public Investors Arbitration Bar Association
  • Media Law Resource Center, Defense Counsel Section

Honors & Awards

  • AV Preeminent™ rating by Martindale-Hubbell® Peer Review Ratings
  • Chambers USA: America's Leading Lawyers for Business, Commercial Litigation
  • Best Lawyers in America®, Litigation - First Amendment Law, Litigation - Environmental, Litigation - Securities, Appellate Practice
  • New England Super Lawyers
  • Benchmark Litigation, Future Star
  • Maine Bar Foundation, Fellow
  • Litigation Counsel of America, Fellow

Civic Involvement

  • Board of Directors, Portland Ovations (2008 - Present)
  • Board of Directors, New England First Amendment Coalition (2008-Present)
  • Clerk and Board of Directors, Maine Freedom of Information Coalition (2003-Present)
  • Clerk and Member, Environmental Technology Council of Maine (2006 - Present)
  • Former Board Chair, American Red Cross of Southern Maine (2004-2006)
  • Pro Bono General Counsel, Maine Adaptive Sports (2014-present)