Atty. David D. O'Sullivan

Atty. David D. O'Sullivan

David D. O'Sullivan is a lawyer practicing mergers and acquisitions, commercial transactions, business planning and 6 other areas of law.

Wheaton Wheaton 30 yrs experience 30 year
Call (872) 336-0868 Book Appointment

Profile Summary

About David D. O'Sullivan at a glance

David D. O'Sullivan is a Member based in Wheaton, Illinois, practicing at Huck Bouma PC. They have 30+ years of legal experience, licensed to practice since 1996. Their practice focuses on contracts, trademark, business, tax, and m&a. Admitted to practice in Illinois (1996) and U.S. District Court, Northern District of Illinois (1996). Educated at DePaul University College of Law (J.D., 1996) and University of Illinois at Urbana-Champaign (B.S. Finance, 1993). Recognitions include Peer Reviewed. Active member of Illinois State and American Bar Associations. Serands clients in Wheaton, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • David D. O'Sullivan is a lawyer practicing mergers and acquisitions, commercial transactions, business planning and 6 other areas of law
  • David received a B.S. degree from University of Illinois at Urbana-Champaign in 1993, and has been licensed for 30 years
  • David practices at Huck Bouma PC in Wheaton, IL

Practice Areas Explained

David D. O'Sullivan's Areas of Practice

Each practice area below reflects the types of cases David D. O'Sullivan handles, with a brief overview of what that area of law covers.

Contracts

David D. O'Sullivan is one of 76,762 contracts attorneys indexed nationally. Browse contracts attorneys in Illinois →

Trademark Law

David D. O'Sullivan is one of 23,222 trademark attorneys indexed nationally. Browse trademark attorneys in Illinois →

Business & Corporate Law

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

David D. O'Sullivan is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Illinois →

Tax Law

Tax attorneys handle IRS audits, tax debt, international tax, estate planning, and tax court litigation.

David D. O'Sullivan is one of 85,302 tax attorneys indexed nationally. Browse tax attorneys in Illinois →

Mergers & Acquisitions

David D. O'Sullivan is one of 49,731 m&a attorneys indexed nationally. Browse m&a attorneys in Illinois →

Jurisdictional Context

Why local counsel matters in Illinois

Practicing law in Illinois. Legal matters in Illinois are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Wheaton are typically filed in the local municipal court or the appropriate Illinois state district court, depending on subject matter and amount in controversy. An attorney licensed in Illinois brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Illinois courts without local counsel or pro hac vice admission.

Looking for additional Illinois attorneys? Browse all attorneys in Wheaton or all attorneys in Illinois.

Frequently Asked

Common questions about David D. O'Sullivan

Where is David D. O'Sullivan's law office located?
David D. O'Sullivan's law practice is located in Wheaton, Illinois. The firm is Huck Bouma PC. You can contact the office directly through this profile page.
What practice areas does David D. O'Sullivan handle?
David D. O'Sullivan focuses on contracts, trademark, business, tax, m&a. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has David D. O'Sullivan practiced law?
David D. O'Sullivan has 30+ years of legal experience and has been licensed since 1996.
Where did David D. O'Sullivan go to law school?
David D. O'Sullivan earned their education at (J.D., 1996); (B.S. Finance, 1993).
How can I contact David D. O'Sullivan for a consultation?
You can contact David D. O'Sullivan directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.
What awards or recognition has David D. O'Sullivan received?
David D. O'Sullivan's notable recognition includes: Peer Reviewed.

Education

J.D.
DePaul University College of Law
- 1996
B.S. Finance
University of Illinois at Urbana-Champaign
- 1993

Awards

Peer Reviewed

Bar Admissions

Illinois
Admitted: 1996
U.S. District Court, Northern District of Illinois
Admitted: 1996

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