Atty. Sean Thomas Prosser

Atty. Sean Thomas Prosser

Sean Thomas Prosser is a lawyer practicing securities litigation, enforcement & white-collar defense, litigation and 6 other areas of law. Sean received a B.A. degree from University of Pennsylvania in 1986, and has been licensed for 33 years.

San Diego San Diego 33 yrs experience 33 year
Call (858) 369-1118 Book Appointment

Profile Summary

About Sean Thomas Prosser at a glance

Sean Thomas Prosser is a Partner based in San Diego, California, practicing at Morrison & Foerster LLP. They have 33+ years of legal experience, licensed to practice since 1993. Their practice focuses on business, federal crimes, white collar, securities, and litigation. Admitted to practice in California (1993). Educated at New York Law School (J.D., 1992) and University of Pennsylvania (B.A., 1986). Serands clients in San Diego, CA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Sean Thomas Prosser is a lawyer practicing securities litigation, enforcement & white-collar defense, litigation and 6 other areas of law
  • Sean received a B.A. degree from University of Pennsylvania in 1986, and has been licensed for 33 years
  • Sean practices at Morrison & Foerster LLP in San Diego, CA

Practice Areas Explained

Sean Thomas Prosser's Areas of Practice

Each practice area below reflects the types of cases Sean Thomas Prosser 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.

Sean Thomas Prosser is one of 501,317 business attorneys indexed nationally. Browse business attorneys in California →

Federal Crimes

Sean Thomas Prosser is one of 6,773 federal crimes attorneys indexed nationally. Browse federal crimes attorneys in California →

White Collar Crimes

Sean Thomas Prosser is one of 20,025 white collar attorneys indexed nationally. Browse white collar attorneys in California →

Securities Law

Sean Thomas Prosser is one of 64,529 securities attorneys indexed nationally. Browse securities attorneys in California →

Civil Litigation

Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

Sean Thomas Prosser is one of 454,532 litigation attorneys indexed nationally. Browse litigation 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 San Diego 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 andnue, 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 San Diego or all attorneys in California.

Frequently Asked

Common questions about Sean Thomas Prosser

Where is Sean Thomas Prosser's law office located?
Sean Thomas Prosser's law practice is located in San Diego, California. The firm is Morrison & Foerster LLP. You can contact the office directly through this profile page.
What practice areas does Sean Thomas Prosser handle?
Sean Thomas Prosser focuses on business, federal crimes, white collar, securities, litigation. Each practice area listed reflects experience handling cases of that type in California.
How long has Sean Thomas Prosser practiced law?
Sean Thomas Prosser has 33+ years of legal experience and has been licensed since 1993.
Where did Sean Thomas Prosser go to law school?
Sean Thomas Prosser earned their education at (J.D., 1992); (B.A., 1986).
How can I contact Sean Thomas Prosser for a consultation?
You can contact Sean Thomas Prosser 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.

Education

J.D.
New York Law School
- 1992
B.A.
University of Pennsylvania
- 1986

Bar Admissions

California
Admitted: 1993

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