David D. O’Sullivan

David D. O’Sullivan

Business Counseling and Governance, Business Services, Buying and Selling Businesses, Contract Services, Entity Planning and Formation, Mergers and Acquisitions, Taxation

(630) 221-1755 | dosullivan@huckbouma.com


  • DePaul University College of Law, Chicago, Illinois, 1996 J.D.
    Honors: Highest Honors; Order of the Coif
    Law Review: DePaul University Law Review, Member
  • University of Illinois, Urbana-Champaign 1993 B.S.
    Honors: With Honors
    Major: Finance

Associations & Memberships

  • Midwest Business Brokers Institute
  • DuPage County Bar Association
  • Illinois State Bar Association
  • American Bar Association


  • Illinois

David O’Sullivan is an Equity Shareholder at Huck Bouma and Co-Chair of Huck Bouma’s M&A and Corporate Transactional practice groups.

With respect to his M&A practice, Dave has over 20 years of experience leading complex acquisitions, divestitures, reorganizations, recapitalizations and restructurings in a wide variety of transaction structures (including stock transactions, asset transactions, mergers, Section 338(h)(10) transactions, and tax-deferred equity rollover transactions) and in a wide variety of industries (including manufacturing, distribution, services and technology).

Dave’s practice also includes representing private companies with general corporate matters, such as choice of entity planning and execution (including appropriate ownership arrangements such as operating agreements or shareholder agreements), corporate governance, joint ventures, strategic planning, succession planning and contract negotiation and review. In this role, Dave will very often act as outside general counsel to his corporate clients.

Due to his extensive experience in M&A and general corporate transactions, Dave is known for bringing a practical and solutions-oriented approach to client matters.