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Michael Sweeney is the president and co-founding shareholder of Duffy & Sweeney, a leading boutique business law firm headquartered in Providence, RI. Known as a savvy deal-maker and negotiator, Mike leads the mergers and acquisitions practice where he regularly handles mergers, sales and business acquisitions as well as recapitalizations and equity financings. He serves as general corporate counsel to a number of privately held, mid-market businesses.

Mike holds Martindale Hubbell’s highest rating of AV. He is recognized annually by key ranking organizations including Best Lawyers and Chambers USA: America’s Leading Guide for Business, among others. He received the Deal Maker of the Year award from Finance Monthly.

Mike represents leading companies in technology, manufacturing and distribution, insurance, banking, trust and financial services, and e-commerce industries. Mike has counseled numerous clients from initial start-up formation through various stages of growth and financing, including initial and secondary public offerings and/or sale or merger.

Mike has successfully spearheaded numerous significant mid-market M&A transactions across the US, helping family and entrepreneur owners convert several billion dollars of private enterprise value into liquidity. He is a frequent speaker at middle-market forums with leading financial institutions and investment banks.

Contact & Links
Location
  • 321 South Main Street, Suite 400
    Providence, RI 02903
Education
  • St. John's University, J.D., graduated 1988
  • Providence College
Bar Admissions
  • Rhode Island, Admitted to practice law in Rhode Island
  • Massachusetts, Admitted to practice law in Massachusetts
Affiliations
  • Providence Children's Museum - Overseer
  • Providence College Presidential Council - Member
  • Providence Preservation Society - Trustee
  • Rhode Island Bar Foundation - Fellow
  • Rhode Island Commodores - Commodore

Duffy & Sweeney, LTD
Headquarters: Providence, Rhode Island

6 The Best Lawyers in America® awards

4 Best Lawyers: Ones to Watch® in America awards

Best Law Firms Badge Visit Website View Firm Profile

Lawyer of the Year Badge - 2023 - Mergers and Acquisitions Law Lawyer of the Year Badge - 2020 - Closely Held Companies and Family Businesses Law Lawyer of the Year Badge - 2019 - Corporate Law Lawyer of the Year Badge - 2017 - Closely Held Companies and Family Businesses Law Lawyer of the Year Badge - 2014 - Mergers and Acquisitions Law
Named "Lawyer of the Year" by Best Lawyers® for:
  • Mergers and Acquisitions Law, Providence (2023)
  • Closely Held Companies and Family Businesses Law, Providence (2020)
  • Corporate Law, Providence (2019)
  • Closely Held Companies and Family Businesses Law, Providence (2017)
  • Mergers and Acquisitions Law, Providence (2014)
Recognized in The Best Lawyers in America® 2025 for work in:
  • Business Organizations (including LLCs and Partnerships)
  • Closely Held Companies and Family Businesses Law
  • Corporate Law
  • Mergers and Acquisitions Law
Additional Areas of Practice:
  • Corporate Compliance Law
  • Corporate Governance Law

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Publications

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