Colleen  Lyons

Recent News    Plus

Sheehan Phinney Earns Top Rankings by Chambers USA

Sheehan Phinney Receives NeighborWorks Outstanding Neighbor Award

Sheehan Phinney Named Top in State by Best Lawyers®

Recent Publications    Plus

Benefit corporations: coming soon to New Hampshire

New Hampshire Enacts Modernization of Business Corporation Act

New Hampshire Updates its Investment Trust Act

Colleen Lyons

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Phone: 603.627.8222
Fax: 603.641.2345
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Practice Focus

Colleen has represented a wide assortment of public and private companies. However, the primary focus of her practice involves the representation of small- and medium-sized entities concerning matters ranging from entity selection, formation and structuring to counseling regarding ongoing operational and governance matters. She has a broad-based transactional practice with particular emphasis in mergers and acquisitions, venture capital financings, commercial contracts and commercial lending. In addition, she frequently has acted as local counsel in multi-jurisdictional transactions and provides legal advice to foreign companies with respect to their business affiliates in the United States.

Sample Matters
  • Successfully represented business owners in the sales and acquisitions of business enterprises ranging from software developers to metal fabricators to insurers.
  • Represented clients in connection with the formation of investment entities using New Hampshire Investment Trusts, limited liability companies and corporations.
  • Successfully represented a wide range of start-up enterprises in obtaining debt and equity capital from venture capital sources.


B.A., cum laude, Williams College
Completed requirements for an M.S. in Accounting, New York University Graduate School of Business
J.D., cum laude, Fordham University School of Law


Colleen was named a “Best Lawyer in America” by Woodward/White and has been recognized by Chambers USA as a top attorney for New Hampshire, both in the area of Corporate Law.

Memberships and Admissions

Colleen is admitted to practice in New Hampshire, New York and Connecticut. She is a member of the New Hampshire, New York, Connecticut and American Bar Associations. A former certified public accountant, she also is a member of the American Institute of Certified Public Accountants.

Practice Areas
Business Formation and Succession Planning
Corporate Law and Governance
Mergers and Acquisitions
Securities and Venture Capital

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