Trusted advisors. Experienced advocates.

At Hannegan Armstrong LLP, our team combines sharp legal insight with real-world business and litigation experience to deliver thoughtful, strategic counsel every step of the way.

Our Team

R. Casey Hannegan

Casey counsels businesses, individuals, and families across a wide range of matters—including business formation, mergers and acquisitions, real property matters, contracts, employment issues, estate planning and trust administration.

Learn More

Mark L. Armstrong

Mark is a seasoned civil litigator with a focus on construction and business disputes. Known for his precision and resolve in the courtroom, his approach is informed by both practical business experience and a strong foundation in legal scholarship.

Learn More

James A. Murphy V

James counsels clients on business formation, governance, and commercial transactions with a focus on clarity and long-term growth. His practice includes corporate governance and acquisitions, where he brings a steady, detail-oriented approach to every engagement.

Learn More

Erin Barton

erin@hanneganarmstrong.com

Professional Partners

In addition to Hannegan Armstrong LLP’s legal team, the firm has long-standing strategic relationships with professionals in the areas of intellectual property, family law, valuations and appraisals, accounting and audit, insurance, real estate, property management, and financial services.