Atty. Brien Michael Wassner

Atty. Brien Michael Wassner

Brien Michael Wassner is a lawyer practicing private equity, mergers & acquisitions, public finance & tax exempt finance and 3 other areas of law. Brien received a A.B. degree from Princeton University in 2000, and has been licensed for 23 years.

New York New York 23 J. Erfahrung 23 year
Call (646) 693-5663 Book Appointment

Profile Summary

About Brien Michael Wassner at a glance

Brien Michael Wassner is an Attorney based in New York, New York, practforg at Sidley Austin LLP. They have 23+ years of legal experience, licensed to practice since 2003. Their practice focuses on business, tax, m&a, and creditor rights. Admitted to practice in New Jersey (2003) and New York (2004). Educated at Benjamin N. Cardozo School of Law, Yeshiva University (J.D., 2003) and Princeton University (A.B., 2000). Serands clients in New York, NY and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

Über uns

  • Brien Michael Wassner is a lawyer practicing private equity, mergers & acquisitions, public finance & tax exempt finance and 3 other areas of law
  • Brien received a A.B. degree from Princeton University in 2000, and has been licensed for 23 years
  • Brien practices at Sidley Austin LLP in New York, NY

Practice Areas Explained

Brien Michael Wassner's Areas of Practice

Each practice area below reflects the types of cases Brien Michael Wassner 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.

Brien Michael Wassner is one of 501,317 business attorneys indexed nationally. Browse business attorneys in New York →

Tax Law

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

Brien Michael Wassner is one of 85,302 tax attorneys indexed nationally. Browse tax attorneys in New York →

Mergers & Acquisitions

Brien Michael Wassner is one of 49,731 m&a attorneys indexed nationally. Browse m&a attorneys in New York →

Creditor Rights & Collections

Brien Michael Wassner is one of 42,948 creditor rights attorneys indexed nationally. Browse creditor rights attorneys in New York →

Jurisdictional Context

Why local counsel matters in New York

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

Looking for additional New York attorneys? Browse all attorneys in New York or all attorneys in New York.

Frequently Asked

Common questions about Brien Michael Wassner

Where is Brien Michael Wassner's law office located?
Brien Michael Wassner's law practice is located in New York, New York. The firm is Sidley Austin LLP. You can contact the office directly through this profile page.
What practice areas does Brien Michael Wassner handle?
Brien Michael Wassner focuses on business, tax, m&a, creditor rights. Each practice area listed reflects experience handling cases of that type in New York.
How long has Brien Michael Wassner practiced law?
Brien Michael Wassner has 23+ years of legal experience and has been licensed since 2003.
Where did Brien Michael Wassner go to law school?
Brien Michael Wassner earned their education at (J.D., 2003); (A.B., 2000).
How can I contact Brien Michael Wassner for a consultation?
You can contact Brien Michael Wassner 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.
Benjamin N. Cardozo School of Law, Yeshiva University
- 2003
A.B.
Princeton University
- 2000

Bar Admissions

New Jersey
Admitted: 2003
New York
Admitted: 2004

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