Atty. Brian O Connor

Atty. Brian O Connor

Brian O Connor is a lawyer practicing corporate law, taxation, securities regulation. Brian received a B.A. degree from Providence College in 1965, and has been licensed for 58 years.

Stamford Stamford 58 yrs experience 58 year
Call (203) 864-4375 Book Appointment

Profile Summary

About Brian O Connor at a glance

Brian O Connor is a Member based in Stamford, Connecticut, practicing at Diserio Martin O'Connor & Castiglioni LLP. They have 58+ years of legal experience, licensed to practice since 1968. Their practice focuses on business, tax, and securities. Admitted to practice in Connecticut (1968). Educated at University of Connecticut (LL.B., 1968) and Providence College (B.A., 1965). Recognitions include BV Distinguished. Active member of Greenwich, Regional and Connecticut Bar Associations. Serands clients in Stamford, CT and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Brian O Connor is a lawyer practicing corporate law, taxation, securities regulation
  • Brian received a B.A. degree from Providence College in 1965, and has been licensed for 58 years
  • Brian practices at Diserio Martin O'Connor & Castiglioni LLP in Stamford, CT

Practice Areas Explained

Brian O Connor's Areas of Practice

Each practice area below reflects the types of cases Brian O Connor 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.

Brian O Connor is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Connecticut →

Tax Law

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

Brian O Connor is one of 85,302 tax attorneys indexed nationally. Browse tax attorneys in Connecticut →

Securities Law

Brian O Connor is one of 64,529 securities attorneys indexed nationally. Browse securities attorneys in Connecticut →

Jurisdictional Context

Why local counsel matters in Connecticut

Practicing law in Connecticut. Legal matters in Connecticut are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Stamford are typically filed in the local municipal court or the appropriate Connecticut state district court, depending on subject matter and amount in controversy. An attorney licensed in Connecticut 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 Connecticut courts without local counsel or pro hac vice admission.

Looking for additional Connecticut attorneys? Browse all attorneys in Stamford or all attorneys in Connecticut.

Frequently Asked

Common questions about Brian O Connor

Where is Brian O Connor's law office located?
Brian O Connor's law practice is located in Stamford, Connecticut. The firm is Diserio Martin O'Connor & Castiglioni LLP. You can contact the office directly through this profile page.
What practice areas does Brian O Connor handle?
Brian O Connor focuses on business, tax, securities. Each practice area listed reflects experience handling cases of that type in Connecticut.
How long has Brian O Connor practiced law?
Brian O Connor has 58+ years of legal experience and has been licensed since 1968.
Where did Brian O Connor go to law school?
Brian O Connor earned their education at (LL.B., 1968); (B.A., 1965).
How can I contact Brian O Connor for a consultation?
You can contact Brian O Connor 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 Brian O Connor received?
Brian O Connor's notable recognition includes: BV Distinguished.

Education

LL.B.
University of Connecticut
- 1968
B.A.
Providence College
- 1965

Awards

BV Distinguished

Bar Admissions

Connecticut
Admitted: 1968

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