About John
John Sullivan practices law in New England and maintains active memberships in the Massachusetts and New Hampshire state bars. He built his career in private practice and now works from an office at Finbury & Sullivan PC. Colleagues describe him as methodical at the table and persistent in court, traits that show in the steady rhythm of his work.
After completing his legal education, Sullivan entered practice and steadily expanded the scope of his work. Early years were spent handling a mix of client matters that required both courtroom presence and detailed transactional work. Over time he moved into roles that required managing cases from intake through resolution, supervising support staff, and working directly with clients on strategy and negotiation.
Sullivan’s professional life has stayed squarely in the practical side of law. He has taken on matters in state courts and assisted clients with regulatory and administrative processes. He spends a good portion of his time counseling individuals and small to mid-size businesses on routine and complex legal issues. He also appears in hearings and trials when cases require a courtroom advocate.
His memberships in the Massachusetts State Bar and the New Hampshire State Bar reflect a practice that crosses state lines within the region. Those admissions allow him to represent clients and file matters in both jurisdictions, and he often coordinates work that touches on laws and procedures in each state. He participates in bar activities relevant to practice management and professional rules, and he keeps his license active in both states.
Sullivan is based at Finbury & Sullivan PC. There he handles client intake, case planning and advocacy, and he works alongside other lawyers and support professionals to move matters forward. He is known for pragmatic advice and an emphasis on clear communication. He keeps files organized and deadlines met, and he prioritizes explaining legal options in plain terms.
He continues to serve clients from his office at Finbury & Sullivan PC, handling matters that arise in Massachusetts and New Hampshire and focusing on delivering practical legal solutions for state and regional matters.