Synopsys Investors Warned of Dec. 30 Lead-Plaintiff Deadline in Securities Class Action Over Design IP Disclosures

The case centers on claims Synopsys understated the profitability hit from AI-driven customization in its Design IP unit before a September disclosure and steep share drop.

Overview

On Nov. 17–18, 2025, Bleichmar Fonti & Auld, Bernstein Liebhard, Levi & Korsinsky, and Glancy Prongay & Murray issued investor notices offering contingency-fee representation.
The complaint, filed in the Northern District of California as Kim v. Synopsys, Inc., No. 3:25-cv-09410, asserts claims under Sections 10(b) and 20(a) of the Exchange Act.
Plaintiffs allege Synopsys downplayed how AI-customer demands for added customization eroded Design IP economics and hindered roadmap decisions.
The putative class covers investors who purchased or acquired Synopsys securities from December 4, 2024 through September 9, 2025.
Synopsys disclosed on Sept. 9, 2025 that its IP business underperformed, reporting Design IP revenue of $425.9 million (down 7.7% YoY) and net income of $242.5 million (down 43% YoY), after which the stock fell nearly 36% to $387.78.