Atty. Stephen P. O'Sullivan

Atty. Stephen P. O'Sullivan

Stephen P. O'Sullivan is a lawyer practicing business, commercial, corporate & incorporation and 2 other areas of law.

Boston Boston 25 yrs experience 25 year
Call (857) 347-3865 Book Appointment

Profile Summary

About Stephen P. O'Sullivan at a glance

Stephen P. O'Sullivan is a Sheshunoff Consulting based in Boston, Massachusetts. They have 25+ years of legal experience, licensed to practice since 2001. Their practice focuses on formation, business, tax, and m&a. Admitted to practice in Massachusetts (2001). Educated at Suffolk University Law School (J.D., 2000) and Merrimack College (B.A. Mathematics, 1992). Serands clients in Boston, MA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Stephen P. O'Sullivan is a lawyer practicing business, commercial, corporate & incorporation and 2 other areas of law
  • Stephen received a B.A. degree from Merrimack College in 1992, and has been licensed for 25 years
  • Stephen practices in Boston, MA

Practice Areas Explained

Stephen P. O'Sullivan's Areas of Practice

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

Business Formation

Stephen P. O'Sullivan is one of 35,584 formation attorneys indexed nationally. Browse formation attorneys in Massachusetts →

Business & Corporate Law

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

Stephen P. O'Sullivan is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Massachusetts →

Tax Law

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

Stephen P. O'Sullivan is one of 85,302 tax attorneys indexed nationally. Browse tax attorneys in Massachusetts →

Mergers & Acquisitions

Stephen P. O'Sullivan is one of 49,731 m&a attorneys indexed nationally. Browse m&a attorneys in Massachusetts →

Jurisdictional Context

Why local counsel matters in Massachusetts

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

Looking for additional Massachusetts attorneys? Browse all attorneys in Boston or all attorneys in Massachusetts.

Frequently Asked

Common questions about Stephen P. O'Sullivan

Where is Stephen P. O'Sullivan's law office located?
Stephen P. O'Sullivan's law practice is located in Boston, Massachusetts. You can contact the office directly through this profile page.
What practice areas does Stephen P. O'Sullivan handle?
Stephen P. O'Sullivan focuses on formation, business, tax, m&a. Each practice area listed reflects experience handling cases of that type in Massachusetts.
How long has Stephen P. O'Sullivan practiced law?
Stephen P. O'Sullivan has 25+ years of legal experience and has been licensed since 2001.
Where did Stephen P. O'Sullivan go to law school?
Stephen P. O'Sullivan earned their education at (J.D., 2000); (B.A. Mathematics, 1992).
How can I contact Stephen P. O'Sullivan for a consultation?
You can contact Stephen P. 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.

Education

J.D.
Suffolk University Law School
- 2000
B.A. Mathematics
Merrimack College
- 1992

Bar Admissions

Massachusetts
Admitted: 2001

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