FFIV Shareholder Notice: F5, Inc. (FFIV) Faces Securities Class Action Amid Cybersecurity Incident, Questions About Disclosure Timing and Impact on Company’s Business – Hagens Berman
01/02/2026 01:48 PM • F5, Inc. faces a securities class action lawsuit over a major cybersecurity breach involving a nation-state actor that gained unauthorized access to company systems, including its flagship BIG-IP product, on August 9, 2025. The lawsuit questions whether F5 timely disclosed the incident to investors. The breach revelation on October 15, 2025 caused F5 shares to drop 13.9%, and subsequent guidance showing revenue growth slowing from 10% to 0-4% for 2026 triggered another 7.8% decline.
FFIV - F5 experienced a significant cybersecurity breach involving unauthorized access by a nation-state actor to critical systems including its highest revenue product (BIG-IP). The incident resulted in substantial stock price declines (13.9% and 7.8% on separate dates) and a dramatic slowdown in revenue growth guidance from 10% to 0-4%, indicating material business impact and potential customer confidence issues. The company also faces legal scrutiny over disclosure timing.
Investing.com • Jeffrey Neal Johnson