F5 Faces Investor Class Action Over Cyber Breach Disclosures With Lead Plaintiff Deadline Set

Overview

• A securities class action styled Smith v. F5, Inc., No. 2:25-cv-02619, is filed in the Western District of Washington covering purchases from October 28, 2024 through October 27, 2025.
• Law firms including Hagens Berman, Glancy Prongay & Murray, Robbins LLP, and Faruqi & Faruqi are soliciting claims, with a lead plaintiff motion deadline of February 17, 2026.
• Filings challenge the timing and adequacy of F5’s October 15, 2025 disclosures and reference SEC expectations for prompt reporting of material cyber incidents.
• F5 disclosed a highly sophisticated nation‑state actor maintained persistent access to its systems and exfiltrated portions of BIG‑IP source code and information about undisclosed vulnerabilities.
• Shares fell sharply after the October 15 disclosure and again following October 27 results that guided fiscal 2026 revenue growth to 0%–4% due largely to expected sales and remediation impacts from the breach.