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Maryann C. Stallone

Phone: 212-508-6741

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Maryann C. Stallone


Maryann Stallone is a Partner in Tannenbaum Helpern's Litigation & Dispute Resolution practice. She advises clients on complex business disputes in the state and federal courts of New York, arbitrations and alternate dispute resolution forums. Maryann has handled cases involving securities fraud, breach of contract and business torts, including unfair competition, employment discrimination, infringement of intellectual property and professional malpractice. She has served clients in the hedge fund, private equity, REIT, law firm, accounting, dental, media and staffing industries. Her litigation experience includes representing an investment advisor in connection with the Picard v. Katz clawback action, a prestigious law firm and a national accounting firm in connection with the defense of professional malpractice actions, and a global communication company and a private equity firm in connection with their breach of contract and restrictive covenant enforcement claims. Maryann co-writes the monthly Attorney Professionalism Forum in the NYSBA Journal and has been selected as a Rising Star by Super Lawyers from 2014-2018 and has been included in the Super Lawyers Women's Edition for 2017.

Maryann is also a member of the firm’s Cybersecurity and Data Privacy practice, and assists clients on emerging technology, cybersecurity and data privacy issues, including the development or improvement of data privacy practices and data breach response plans through privacy and security assessments.

Significant Matters

  • Representation of a prestigious law firm in the defense of several litigations instituted in the Commercial Division of the Supreme Court of the State of New York, involving claims for attorney malpractice, fraud and violations of Section 487 of the Judiciary Law;
  • Representation of a registered investment advisor in connection with the Picard v. Katz clawback action and other Madoff-related litigations;
  • Representation of clients in discrimination matters filed in federal court, including defending discrimination and retaliation claims based upon sex, race, national origin, religion, disability, age and other protected classes, and in wage and hour disputes;
  • Representation of a leading global communications business in the enforcement of restrictive covenants, tortious interference with contract, and unfair competition claims;
  • Representation of hedge fund manager and its principal in connection with an investigation by the SEC, and in a subsequent litigation by the Liquidator of the funds in federal court involving contract and fiduciary duty claims.



  • Manhattan, 2000, B.A.


  • Summa cum laude
  • Phi Beta Kappa
  • Alpha Kappa Delta (Sociology)
  • Alpha Mu Gamma (Foreign Language)
  • Pi Sigma Alpha (Political Science)
  • Ryan Medal for Government
  • Fredrick Mortati Medal for Italian

Law School:

  • Brooklyn Law, 2007, J.D.


  • Cum laude
  • Robert Lewis Prize for Labor Law
  • Primary Article and Symposia Editor, Journal of Law & Policy

Bar Admissions:

  • 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 Court of Appeals for the Second Circuit

Award Recognitions:

  • Super Lawyers Women's Edition 2016
  • Rising Star-Super Lawyers: 2014-2018
  • Top Women - Metro New York 2015, Rising Star in Business Litigation
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