Denis A. Dufresne

Practice Area: Corporate

Denis Dufresne has over 20 years of experience in representing public and private companies, investment funds and lending institutions on complex business transactions. Mr. Dufresne has extensive experience counseling clients in structuring, negotiating, documenting, and executing acquisitions and divestitures of businesses and assets (including licensing arrangements), leveraged buyouts, business combinations, equity and debt investments, debt restructuring, joint ventures and other commercial transactions.

Mr. Dufresne’s clients include founders, entrepreneurs, emerging and established entities, independent members of public company boards, borrowers, lenders, placement agents and underwriters. His mergers and acquisitions transactional practice has included the area of life sciences, where he has broad experience in the full range of licensing and collaboration, structured M&A and other transactions common to this sector.


J.D., St. John’s University School of Law

B.S., International Business, State University of New York at Plattsburgh (National Leadership Honor Society)


State of New York

Prior Experience

Before joining MSF, Denis was with Lombardo Dufresne, LLP, a firm which he co-founded in 2006, and prior to that was counsel in the corporate finance group at Kaye Scholer LLP (1996 – 2006). Denis also served in-house as Deputy General Counsel for an oncology-focused pharmaceutical company (2010 – 2015).

Representative Matters

Represented the owners of a bus refurbishing company in a $85M sale to a private equity fund.

Represented collective group of industrial adhesive company owners in a $100M sale to a private equity fund.

Represented a NYC-based pharmaceutical company in equity and debt transaction totaling over $500M, and over a dozen licensing and acquisition transactions.

Represented four independent board members in connection with the separation from a public company board of directors.