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Benjamin Klebanoff


Benjamin Klebanoff is experienced in litigation and investigations practices. He focuses on complex commercial, antitrust, and securities litigation, investigations, enforcement actions, and regulatory proceedings.

Ben has represented clients in cases in federal and state courts, internal investigations, and investigations by the SEC, DOJ, and other regulators. He also provides securities and litigation advice to financial institutions and a wide range of corporate clients, including technology and multimedia firms. Ben also has an active pro bono practice, having represented individuals in both federal and state courts on an array of matters ranging from constitutional violations to commercial disputes.


Representative matters

Counsel to technology company defending antitrust and commercial claims in federal and multi-state proceedings.

Counsel to major financial institutions in antitrust class actions arising from price-fixing and boycott claims in MDL proceedings.

Counsel to major financial institutions as underwriters in separate securities class actions arising out of recent stock offerings of companies.

Represent major financial institutions and individuals in high profile investigations by numerous authorities related to subjects such as securities fraud (including insider trading), antitrust/price fixing, market manipulation, and compliance and controls.

Represent individual pro bono in commercial dispute concerning conversion of personal property and allegations of breach of contract.

Represent individual pro bono in course of successfully advocating for individual's removal from death row in Florida.

Represent individuals pro bono alleging constitutional violations by police officers.

Published Work

  • Selected Publications "Second Circuit," Global Competition Review (2020, 2021)
  • "Ghostwriting-More than Meets the Eye; Ghostwriting-Attorneys in Disguise: A Proposal for Handling Pro Se Parties Who Seek Limited Representation in Federal Court," 40 Thurgood Marshall Law Review 31 (2014)



Attorney-at-Law, New York


United States District Court for the Southern District of New York

United States District Court for the Eastern District of New York

United States District Court for the Northern District of New York

United States Court of Appeals for the Second Circuit

United States Court of Appeals for the Third Circuit


Emory University School of Law J.D. (With Honors)

Editor in Chief, Emory Law Journal

Oberlin College B.A., Economics (With Honors)

A&O Shearman was formed on May 1, 2024 by the combination of Shearman & Sterling LLP and Allen & Overy LLP and their respective affiliates (the legacy firms). Any matters referred to above may include matters undertaken by one or more of the legacy firms rather than A&O Shearman.