Atty. William Thomas Whelan

Atty. William Thomas Whelan

William Thomas Whelan is a lawyer practicing mergers & acquisitions, securities & capital markets, corporate governance and 11 other areas of law. William received a B.A. degree from Middlebury College, and has been licensed for 43 years.

Boston Boston 43 yrs experience 43 year
Call (857) 416-2876 Book Appointment

Profile Summary

About William Thomas Whelan at a glance

William Thomas Whelan is a Member based in Boston, Massachusetts, practicing at Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C.. They have 43+ years of legal experience, licensed to practice since 1983. Their practice focuses on business, tax, m&a, securities, and ip licensing. Admitted to practice in Massachusetts (1983). Educated at Boston University J.D. (—) and Middlebury College B.A. (—). Recognitions include AV Preeminent. Serands clients in Boston, MA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • William Thomas Whelan is a lawyer practicing mergers & acquisitions, securities & capital markets, corporate governance and 11 other areas of law
  • William received a B.A. degree from Middlebury College, and has been licensed for 43 years
  • William practices at Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C. in Boston, MA

Practice Areas Explained

William Thomas Whelan's Areas of Practice

Each practice area below reflects the types of cases William Thomas Whelan 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 Thomas Whelan 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.

William Thomas Whelan is one of 85,302 tax attorneys indexed nationally. Browse tax attorneys in Massachusetts →

Mergers & Acquisitions

William Thomas Whelan is one of 49,731 m&a attorneys indexed nationally. Browse m&a attorneys in Massachusetts →

Securities Law

William Thomas Whelan is one of 64,529 securities attorneys indexed nationally. Browse securities attorneys in Massachusetts →

IP Licensing

William Thomas Whelan is one of 2,744 ip licensing attorneys indexed nationally. Browse ip licensing 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 William Thomas Whelan

Where is William Thomas Whelan's law office located?
William Thomas Whelan's law practice is located in Boston, Massachusetts. The firm is Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C.. You can contact the office directly through this profile page.
What practice areas does William Thomas Whelan handle?
William Thomas Whelan focuses on business, tax, m&a, securities, ip licensing. Each practice area listed reflects experience handling cases of that type in Massachusetts.
How long has William Thomas Whelan practiced law?
William Thomas Whelan has 43+ years of legal experience and has been licensed since 1983.
Where did William Thomas Whelan go to law school?
William Thomas Whelan earned their education at (—); (—).
How can I contact William Thomas Whelan for a consultation?
You can contact William Thomas Whelan 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 Thomas Whelan received?
William Thomas Whelan's notable recognition includes: AV Preeminent.

Education

Boston University J.D.
- In Progress
Middlebury College B.A.
- In Progress

Awards

AV Preeminent

Bar Admissions

Massachusetts
Admitted: 1983

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