Atty. William John Simpson

Atty. William John Simpson

William John Simpson is a lawyer practicing venture capital, private equity, mergers and acquisitions. William received a B.A. degree from University of Virginia in 1976, and has been licensed for 47 years.

Costa Mesa Costa Mesa 47 Years Experience 47 year
Call (877) 326-9253

Profile Summary

About William John Simpson at a glance

William John Simpson is a Partner, Corporate Department based in Costa Mesa, California, practicing at Paul Hastings LLP. They have 47+ years of legal experience, licensed to practice since 1979. Their practice focuses on business and m&a. Admitted to practice in California (1979). Educated at University of Virginia School of Law (J.D., 1979) and University of Virginia (B.A., 1976). Recognitions include AV Preeminent. Serves clients in Costa Mesa, CA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • William John Simpson is a lawyer practicing venture capital, private equity, mergers and acquisitions
  • William received a B.A. degree from University of Virginia in 1976, and has been licensed for 47 years
  • William practices at Paul Hastings LLP in Costa Mesa, CA

Practice Areas Explained

William John Simpson's Areas of Practice

Each practice area below reflects the types of cases William John Simpson handles, with a brief overview of what that area of law covers.

Business & Corporate Law

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

William John Simpson is one of 452,854 business attorneys indexed nationally. Browse business attorneys in California →

Mergers & Acquisitions

William John Simpson is one of 45,724 m&a attorneys indexed nationally. Browse m&a attorneys in California →

Jurisdictional Context

Why local counsel matters in California

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

Looking for additional California attorneys? Browse all attorneys in Costa Mesa or all attorneys in California.

Frequently Asked

Common questions about William John Simpson

Where is William John Simpson's law office located?
William John Simpson's law practice is located in Costa Mesa, California. The firm is Paul Hastings LLP. You can contact the office directly through this profile page.
What practice areas does William John Simpson handle?
William John Simpson focuses on business, m&a. Each practice area listed reflects experience handling cases of that type in California.
How long has William John Simpson practiced law?
William John Simpson has 47+ years of legal experience and has been licensed since 1979.
Where did William John Simpson go to law school?
William John Simpson earned their education at (J.D., 1979); (B.A., 1976).
How can I contact William John Simpson for a consultation?
You can contact William John Simpson 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 William John Simpson received?
William John Simpson's notable recognition includes: AV Preeminent.

Education

J.D.
University of Virginia School of Law
- 1979
B.A.
University of Virginia
- 1976

Awards

AV Preeminent

Bar Admissions

California
Admitted: 1979

Reviews

5.0
1 Review
5 0
4 0
3 0
2 0
1 0
These reviews belong to platform users; they do not constitute advertisement or promotion for the attorney. Opinions are published for informational purposes only.

No reviews yet.