Mark G. Borden

Retired Partner

Mark Borden was a member of WilmerHale’s Corporate Practice, focusing on the representation of companies in the technology and finance sectors, among others. Mr. Borden developed a successful corporate practice, concentrating primarily on securities law, corporate finance and acquisitions. Mr. Borden joined the firm in 1976 and retired in 2020.

Mr. Borden had more than 40 years of experience in representing private and public companies. His public company clients included Analog Devices, Demandware, MKS Instruments, Red Hat, Skyworks Solutions, Staples, State Street and WEX.

Mr. Borden represented companies and underwriters in more than 100 public offerings. Underwriters that he represented include Goldman Sachs & Co., Morgan Stanley, Deutsche Bank and UBS.

In the acquisitions area, Mr. Borden had extensive experience both in structuring acquisitions and in designing defenses against unsolicited takeovers.

Mr. Borden is co-author of "Start-up Companies – Planning, Financing and Operating the Successful Business," published by Law Journal Seminars Press.

Community Involvement

Mr. Borden was an overseer of the Boston Symphony Orchestra.

Professional Activities

Mr. Borden has lectured at various seminars sponsored by MCLE and the Massachusetts Bar Association, on topics relating to public offerings, securities laws and takeover defenses. Mr. Borden served as a member of the subcommittee of the Boston Bar Association that drafted the Massachusetts Control Share Acquisition Act. He served on the special task force of the Boston Bar Association that drafted the Massachusetts corporations statute.


  • Award Text

    Leading Lawyer for Corporate/M&A and Private Equity: Venture Capital

    Chambers USA


  • Award Text

    Boston Corporate Governance Law Lawyer of the Year

    Best Lawyers in America®


  • Award Text

    Recommended for Capital Markets and M&A/Corporate

    The Legal 500 United States


  • Named as a leader in the corporate/M&A field in the 2015–2020 editions of Chambers Global: The World's Leading Lawyers, and as a leader in the private equity field in the 2008 edition. 
  • Recognized as a leader in the corporate/M&A and private equity: venture capital investment categories in the 2007–2020 editions of Chambers USA: America's Leading Lawyers for Business, and currently ranked as a "Star Individual" with sources commenting "he is a very strong lawyer [who] handles clients well," "a sought after advisor" and he has "the best combination of technical expertise and practical judgement."
  • Recommended in the 2016–2018 editions of The Legal 500 United States for finance: capital markets: debt offerings; finance: capital markets: equity offerings: advice to managers; and M&A/corporate and commercial: M&A: middle-market. 
  • Named the 2015 and 2012 Boston Corporate Governance Law Lawyer of the Year, 2014 and 2009 Boston Corporate Law Lawyer of the Year, 2013 Boston Securities/Capital Markets Law Lawyer of the Year, and 2010 Boston Mergers and Acquisitions Law Lawyer of the Year by the Best Lawyers in America, and is consistently recognized for his work in corporate compliance, corporate governance, corporate law, mergers and acquisitions law and securities/capital markets law. 
  • Named to the New England Super Lawyer (formerly "Massachusetts Super Lawyer") list, as published in Boston Magazine, since 2004 
  • Named among the world's leading merger & acquisition lawyers in the International Who's Who of Merger & Acquisition Lawyers 2010–2014.

Insights & News


  • Education

    • JD, Harvard Law School, 1976

    • BA, Yale University, 1973

      summa cum laude
  • Admissions

    • Massachusetts