Mark A. DeFeo

Mark DeFeo helps private equity funds to successfully complete buy-outs, growth equity financings, exits, and other significant transactions. Mark is regarded as a trusted advisor to clients throughout the lifecycle of their investments, adept at handling the acquisition or equity investment on the front-end of a transaction and the exit on the back-end. Mark provides further value to clients by helping in the advancement of the business as it grows through add-on acquisitions, equity financings, and other significant inflection points, while also serving as outside general counsel for the portfolio companies.

Mark also counsels portfolio companies, search funds and family offices on complex M&A and general corporate matters.

Mark has worked on transactions in a variety of sectors, including software, tech-enabled services, cybersecurity, healthcare IT, financial services, consulting, and business services.


  • Massachusetts Super Lawyers

Representative Engagements

  • PPA Tour and its owner, Dundon Capital Partners, in PPA Tour’s merger with Major League Pickleball.
  • BV Investment Partners in numerous acquisitions and related add-ons in the business services, security and software industries.
  • Century Equity Partners in the acquisition and sale of insurance technology solution providers.
  • Cove Hill Partners in acquisitions, spin-out and recap transactions.
  • Mainsail Partners in several software and technology platform-focused acquisitions and exits.
  • Riverside Partners in various acquisitions and sales in the SaaS, business services, and healthcare technology industries.
  • Serent Capital in several acquisitions, growth equity transactions and exits in healthcare IT and services, software and tech-enabled services.
  • Summit Partners in a number of growth equity financings in healthcare and e-commerce, as well as the sale of healthcare IT company to private equity buyer.
  • Sunstone Partners in multiple platform acquisitions, add-on transactions and roll-up strategies across cybersecurity, healthcare services and tech-enabled services.
  • Sverica Capital in multiple acquisitions of software-focused companies.

Professional and Community Involvement

  • Member of the Boston Bar Association

Education & Credentials

Boston College Law School
JD, 2009, magna cum laude, Order of the Coif
Note Editor, Boston College Law Review
Boston College
BA, 2006, summa cum laude



U.S. District Court, Massachusetts

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