Quantum Corporation Securities Class Action Lawsuit: Important November 3, 2025 Lead Plaintiff Deadline

Strategic Insights -

The Rosen Law Firm reminds investors who purchased securities of Quantum Corporation between November 15, 2024, and August 18, 2025, of the important lead plaintiff deadline in the securities class action first filed by the Firm. Investors who purchased Quantum Corporation securities during this period may be entitled to compensation without payment of any out-of-pocket fees or costs through a contingency fee arrangement.

Key Takeaways:

  • The lawsuit claims that Quantum Corporation improperly recognized revenue during the fiscal year ended March 31, 2025, and as a result, the company would need to restate its previously filed financial statements for the fiscal third quarter ended December 31, 2024.
  • The statements about the company's business, operations, and prospects were materially false and misleading and/or lacked a reasonable basis at all times.
  • The lawsuit seeks to recover damages for investors who suffered losses as a result of the company's false and misleading statements.
  • To join the Quantum Corporation class action, investors can visit [www.rosenlegal.com](http://www.rosenlegal.com) or call Phillip Kim, Esq., toll-free at 866-767-3653 or via email [pkim@rosenlegal.com](mailto:pkim@rosenlegal.com) for information on the class action.
  • A lead plaintiff is a representative party acting on behalf of other class members in directing the litigation, and investors must move the Court no later than November 3, 2025, to serve as lead plaintiff.
  • The Rosen Law Firm has a track record of success in leadership roles and has recovered hundreds of millions of dollars for investors.

Statistics:

  • The lawsuit covers the period from November 15, 2024, to August 18, 2025, inclusive.
  • Investors who purchased Quantum Corporation securities between these dates may be eligible to join the class action.
  • The November 3, 2025, deadline is the last day for investors to move the Court to serve as lead plaintiff.
  • The Rosen Law Firm has secured over $438 million for investors in 2019 alone.

Sources:

  • Globe NewsWire, "Rosen Law Firm Announces Filing of Securities Class Action Lawsuit against Quantum Corporation" (September 18, 2025).
  • The Rosen Law Firm, P.A. ([www.rosenlegal.com](http://www.rosenlegal.com))
  • Law360, "Laurence Rosen Named Plaintiffs' Titan of the Week" (2020).
  • ISS Securities Class Action Services, "Rosen Law Firm Ranked No. 1 for Securities Class Action Settlements in 2017."