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Sean T. O'Connell

  • Martindale-Hubbell® AV Preeminent™ 2021
    Martindale-Hubbell® AV Preeminent™ 2021
  • Best Lawyers 2023 - Sean
    Best Lawyers 2023 - Sean
  • Profile
  • Practice Areas
  • Location Information

With more than 20 years’ experience providing legal services, he helps his clients manage the life and health of their businesses, including purchase and sales, acquisition, entity selection and creation as well as corporate dissolution, drafting, defending and challenging non-compete, and other restrictive covenants. He understands the needs of business owners in New Hampshire and Maine and is focused on reaching efficient and fair outcomes.

Sean successfully represented Bank of New Hampshire Pavilion (formerly Meadowbrook) during its sale of an interest in the concert venue to Live Nation Entertainment. He also represented a client in the specialty foods business in an acquisition of a competitor valued at over $20M.

A native of Durham, New Hampshire, he received his B.A. in Political Science from the University of New Hampshire in 1987 and then went on to compete in the U.S. National Rowing Team for several years. Sean received his Juris Doctorate from UNH Law School in 1995.


    • New Hampshire State Bar
    • Maine State Bar
    • U.S. District Court, District of New Hampshire
    • U.S. District Court, District of Maine
    • U.S. Court of Appeals for the First Circuit


    • Partner, Shaheen & Gordon, P.A. 2007-present
    • Director, Shaheen & Gordon, P.A., 2003-2007
    • Associate Attorney, Shaheen & Gordon, P.A., 1996-2003

    Professional Associations

    • New Hampshire Bar Association
    • Maine Bar Association
    • Strafford Country Bar Association
    • Community Involvement
    • Greater Dover Chamber of Commerce, Board of Directors 2011-present
    • Board Chair 2015-2016
    • Dover Children’s Home, Board of Directors
    • UNH Alumni Awards Committee, 2015-present
    • Children’s Museum of New Hampshire, Past Chair and Board of Directors 1999-2008
    • Great Bay Rowing , Founder and Board Member, 1996-2012
    • Strafford County Bar Association, Former President

    Awards & Honors

    • Dover Chamber of Commerce’s Citizen of the Year, 2024
    • Recognized in The Best Lawyers in America 2023 and 2024 for work in Employment Law – Individuals and Personal Injury Litigation - Plaintiffs


    • B.A., University of New Hampshire, 1987
    • J.D., University of New Hampshire School of Law, 1995

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