Atty. Jeffrey J. Greenbaum
Jeffrey J. Greenbaum, Chair of the Sills Cummis & Gross Class Action Practice Group, is an active litigator and trial attorney in the Federal and State Courts with a specialty in complex business litigation and in defending class action litigation.
Profile Summary
About Jeffrey J. Greenbaum at a glance
Jeffrey J. Greenbaum is a business, real estate, class action, m&a, and estate litigation attorney based in Newark, New Jersey, practicing at Sills Cummis & Gross PC. Admitted to practice in New Jersey, New Jersey and New York, New York. Educated at The University of Michigan Law School (J.D.) and University of Pennsylvania (B.S.). Recognitions include Best Lawyers in America — Bet-the-Company Litigation (2026), Best Lawyers in America — Commercial Litigation (2026), and Best Lawyers in America — Litigation - Banking and Finance (2026). Serands clients in Newark, NJ and the surrounding metropolitan area.
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About
- Jeffrey J. Greenbaum, Chair of the Sills Cummis & Gross Class Action Practice Group, is an active litigator and trial attorney in the Federal and State Courts with a specialty in complex business litigation and in defending class action litigation
- He has handled cases of national prominence, chaired the ABA Section of Litigation Class Actions and Derivative Suits Committee and is a frequent lecturer in the class action field
- He has handled numerous matters involving securities, RICO and consumer fraud, class actions and derivative suits, professional liability, antitrust, banking, chancery practice, contracts, real estate, trade secrets and unfair competition
Practice Areas Explained
Jeffrey J. Greenbaum's Areas of Practice
Each practice area below reflects the types of cases Jeffrey J. Greenbaum handles, with a brief overview of what that area of law covers.
Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.
Jeffrey J. Greenbaum is one of 501,317 business attorneys indexed nationally. Browse business attorneys in New Jersey →
Real estate attorneys handle home purchases, sales, commercial transactions, title disputes, and landlord-tenant matters.
Jeffrey J. Greenbaum is one of 316,149 real estate attorneys indexed nationally. Browse real estate attorneys in New Jersey →
Jeffrey J. Greenbaum is one of 26,424 class action attorneys indexed nationally. Browse class action attorneys in New Jersey →
Jeffrey J. Greenbaum is one of 49,731 m&a attorneys indexed nationally. Browse m&a attorneys in New Jersey →
Jeffrey J. Greenbaum is one of 20,023 estate litigation attorneys indexed nationally. Browse estate litigation attorneys in New Jersey →
Jurisdictional Context
Why local counsel matters in New Jersey
Practicing law in New Jersey. Legal matters in New Jersey are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Newark are typically filed in the local municipal court or the appropriate New Jersey state district court, depending on subject matter and amount in controversy. An attorney licensed in New Jersey 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 Jersey courts without local counsel or pro hac vice admission.
Looking for additional New Jersey attorneys? Browse all attorneys in Newark or all attorneys in New Jersey.
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