Attorneys Profile Image

Peter I. Dunn


Download Bio

Administrative Assistant

Janet Steele

Peter I. Dunn works with family businesses, emerging companies, and start-ups in a variety of industries ranging from life sciences, medical devices, high-tech, craft brewing, architecture, engineering, and finance, to construction and specialty manufacturing. He practices in the areas of corporate and securities law, commercial finance, and mergers and acquisitions.

Peter counsels clients on a wide range of matters such as formation, debt and equity financing, sales of business, employment matters, corporate governance, workouts, and restructurings. He often acts as outside general counsel for his clients, advising them on issues ranging from commercial sales terms, vendor contracts, lending, licensing, and compliance.

Honors & Awards

Thomson Reuters, “Standout Lawyer,” 2023

Boston Magazine, "Top Lawyers" – Corporate Law, 2021-2022

Massachusetts Super Lawyers – Business/Corporate, 2017-2022


  • Massachusetts

JD, magna cum laude, Boston College Law School
BS, cum laude, University of Massachusetts at Amherst


  • Counseled consumer packaged foods company in Series A equity financing.
  • Advised closely-held distributor in $25 million sale of its business to a strategic buyer.
  • Advised life sciences start-up in convertible note offering, board of advisors formation and equity compensation plan.
  • Represented a chain of restaurants in an investigation by the Department of Labor into claims of unpaid overtime, resulting in a favorable resolution.
  • Represented national architecture firm in succession planning from founder group to successor group.
  • Representation of private equity group in $12 million acquisition of multi-location retailer as well as associated debt and equity financing.
  • Represented successful bidder in foreclosure auction of medical device company by venture debt lender whose assets and intellectual property were acquired in bulk at a fraction of the amount owed to the lender.
  • Representation of specialty software company in $12 million preferred equity investment by a private equity firm.
  • Representation of developer in $4.5 million equity raise and $14.5 million bank borrowing for 85 unit assisted living facility.
  • Counseling a syndicate in $4.6 million Series A financing of tech company involving multiple angel groups and venture capital firms.
  • Advisor to domestic $14 million electronics design and sales firm in partnership break-up with Asian manufacturer including negotiation of long-term supply and sales representative agreements as well as purchase and sale and release documents.
  • Representation of $30 million niche software company in year-long strategic re-alignment including divestitures, acquisitions, executive recruitment and implementation of equity incentive and phantom stock plans.
  • Representation of $30 million niche software company in year-long strategic re-alignment including divestitures, acquisitions, executive recruitment and implementation of equity incentive and phantom stock plans.
  • Advisor to lead angel group in seed series financings of tech start-ups.

  • Judge, MassChallenge, Merrimack Valley Sandbox, and other start-up competitions
  • Committee Member, Business Law Section Curriculum Committee, Massachusetts Continuing Legal Education
  • Chair, United Way's Agency Financial Review Committee
  • Examiner, Massachusetts Board of Bar Examiners
  • Member, Boston Bar Association
  • Member, MIT Enterprise Forum
  • Member, Association for Corporate Growth
  • Member, Bioinnovation Group
  • Member, USA 500
  • Former Trustee, Summit Montessori School
  • Board Member, several nonprofits


  • Author, “Regulation Crowdfunding – Still Stuck,” Law 360
  • Author, “Avoid Wage Act Mines,” The Boston Business Journal


  • Chair, Massachusetts Continuing Legal Education’s (MCLE),“Private Company Core Merger & Acquisition (M&A) Fluency,” 2022
  • Chair, Massachusetts Continuing Legal Education’s (MCLE),“How to Advise on Business Closures,” 2021
  • Chair, Massachusetts Continuing Legal Education’s (MCLE) “Representing Micro Brewers,” 2018
  • Co-chair/panelist for recent seminars on angel investing, start-ups, securities law issues, business organizations and contract drafting and negotiation

News for Peter

Casner & Edwards Attorneys Peter I. Dunn and Renee Inomata Recognized as 2023 Thomson Reuters Stand-out Lawyers

14 Casner & Edwards Attorneys Named “Top Lawyers” by Boston Magazine

Casner & Edwards Attorney Peter I. Dunn Chairs MCLE Program on Mergers & Acquisitions

21 Casner & Edwards Attorneys Recognized by Super Lawyers 2022