Rosen Law Firm sets Aug. 11 deadline in Microsoft securities case
Rosen Law Firm said Microsoft investors in a proposed securities fraud class action have until August 11, 2026, to ask to serve as lead plaintiff.
Rosen Law Firm said Microsoft investors who bought common stock between May 1, 2025, and Jan. 28, 2026, may ask to lead an already-filed securities fraud class action. The lead-plaintiff deadline is Aug. 11, 2026.
Rosen said no class has been certified yet. Investors who qualify may be able to join the case through a contingency fee arrangement.
In its notice, the firm said the lawsuit alleges that Microsoft and others made false or misleading statements or failed to disclose issues tied to Copilot products. The allegations listed in the notice include brand positioning, user experience, usage, data siloing, computational capacity, organizational issues and interoperability problems.
The notice also says the complaint alleges Microsoft’s proprietary AI model ranked well below competitors on some benchmark tests. It says the company allegedly needed to raise capital spending by billions of dollars and shift GPU and CPU capacity away from Azure services to improve Copilot and AI research and development.
Rosen’s notice says the lawsuit also claims Microsoft failed to convert a significant percentage of Microsoft 365 users to paid Copilot subscriptions and that Copilot lost market share to rivals. The notice says investors suffered damages when the truth entered the market.
Rosen said investors who purchased Microsoft common stock during the stated class period may be entitled to compensation without out-of-pocket fees or costs if they are part of the case. The firm said a lead plaintiff must move the court no later than Aug. 11, 2026.
The notice describes a lead plaintiff as the representative party for other class members in directing the litigation. It identifies Laurence Rosen and Phillip Kim as lawyers at Rosen Law Firm and lists contact options through the firm’s website, by phone at 866-767-3653 and by email at [email protected].
The next development is the Aug. 11 deadline for investors who want to seek lead-plaintiff status.
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Editorial note: This article was prepared with AI assistance and includes source attribution for reader review.
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