Jacqueline Ma

With a primary focus on shareholder-related litigation and investigations, Jacqueline Ma represents investment funds, companies, and individuals in sophisticated securities and commercial litigation and activist shareholders in situations where the shareholder franchise is under threat. 

Jacqueline is experienced in handling a wide variety of matters including disputes over mergers and acquisitions, asset valuations, business appraisals, shareholder derivative suits, and employment litigation in federal and state courts. She represents sophisticated hedge funds in commercial disputes, corporate election disputes, and government investigations, as well as advises on corporate governance issues, especially in matters relating to the shareholder franchise.

Analytical, strategic, perceptive, and thorough, Jacqueline is experienced in complex corporate and financial instruments, securities filings, and valuations. She brings uncommon facility with financial and expert analyses, electronic discovery, and mastery of corporate governance principles. She takes an active role in litigation and has handled every stage, from pleadings to complex e-discovery, depositions, dispositive motions, and trials. She has drafted successful summary judgment motions and fee applications.

Jacqueline stays ahead of the curve, closely monitoring market developments and offering clients insight into novel legal and litigation issues that may arise. A creative thinker and hard worker, she digs deep, analyzing issues and efficiently finding effective solutions to client problems. Jacqueline understands player dynamics and how judges decide cases, especially in shareholder disputes. As a result, she is able to offer strategic counsel to help clients manage risk and favorably resolve disputes.

Before joining Olshan, Jacqueline worked at Bernstein Litowitz Berger & Grossmann LLP and Linklaters LLP, where she worked on corporate governance and corporate law litigation. At Columbia Law School, she served as a judicial extern for the Honorable Lorna G. Schofield.

Jacqueline is proficient in Mandarin.

  • Worked collaboratively with foreign counsel on the Primo Water Corporation Proxy Litigation, a cross-border matter brought by Legion, an activist shareholder, arising out of a contested election. Managed U.S. law experts and assisted with expert reports and deposition preparation on issues involving U.S. proxy regulations, trends in advance notice bylaws and contested elections, and state corporation laws; resulted in a favorable settlement of the litigation on the eve of depositions.
  • Represented plaintiff investment managers in OTA v. WillScot Corporation Litigation, which involved the interpretation of a warrant agreement in New York Supreme Court; handled fact discovery, defended depositions, assisted with expert discovery and deposition, and helped secure summary judgment in favor of the clients.
  • Provided strategic advice, conducted research, and drafted the defense for a sophisticated shareholder client in proxy contest litigation before the Delaware Chancery Court in a case arising out of a contested election. The matter was resolved in settlement before a motion to dismiss.
  • Used a creative strategy to circumvent the need for costly discovery and secured summary judgment in favor of the plaintiff in a breach of contract action against a mortgage-loan servicer in Fidelis v. Aegis Realty Litigation.



J.D., Columbia Law School, 2016

  • Executive Managing Editor, Journal of Gender and Law
  • Harlan Fiske Stone Scholar

B.A., magna cum laude, University of Washington, 2011


  • New York
  • U.S. Court of Appeals for the Second Circuit
  • U.S. District Court for the Southern District of New York
  • U.S. District Court for the Eastern District of New York


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