Robbins LLP has announced a class action lawsuit on behalf of investors who acquired shares of F5, Inc. (NASDAQ: FFIV) between October 28, 2024 and October 27, 2025. The lawsuit stems from allegations that F5 misled shareholders regarding the financial repercussions of a security breach affecting its operations.
F5, a global leader in multicloud application security and delivery, has been accused of failing to adequately secure client data. According to the complaint, the company was grappling with a significant security breach that compromised its key offerings. On October 15, 2025, F5 disclosed that it had experienced a “long-term, persistent” breach, affecting its BIG-IP product development and engineering knowledge management platforms, including the source code of its BIG-IP product.
Market Reaction and Financial Implications
This revelation led to a sharp decline in F5’s stock price. Shares fell from $343.17 on October 14, 2025 to $295.35 by October 16, 2025, representing a decrease of approximately 13.9% within just two days. The situation worsened when F5 reported its fourth quarter results for fiscal year 2025 on October 27, 2025. The report indicated significantly lower growth expectations for fiscal year 2026 due to the fallout from the security breach.
In this announcement, F5 highlighted anticipated reductions in sales and renewals, extended sales cycles, and increased expenses linked to ongoing remediation efforts. The company’s reliance on the compromised BIG-IP product, its highest revenue generator, further elevated concerns about future revenue impacts.
Following the fiscal report, F5’s stock price fell again, from $290.41 per share at the close on October 27, 2025 to $258.76 by October 28, 2025, marking an additional 10.9% drop in just two days.
Next Steps for Investors
Investors who wish to participate in the class action against F5, Inc. must submit their lead plaintiff papers to the court by February 17, 2026. The lead plaintiff acts on behalf of all class members in guiding the litigation process. It is important to note that participation in the case is not a requirement for potential recovery; shareholders may choose to remain absent class members.
Robbins LLP operates on a contingency fee basis, meaning that shareholders incur no fees or expenses unless there is a recovery from the action. For more details, investors are encouraged to reach out via the firm’s website or contact attorney Aaron Dumas, Jr. directly at (800) 350-6003.
Established in 2002, Robbins LLP is recognized for its commitment to shareholder rights and has a history of assisting clients in recovering losses and holding corporate executives accountable for misconduct. Investors interested in receiving updates about the case or related corporate actions can sign up for alerts through the firm’s Stock Watch service.
As this situation develops, stakeholders are advised to stay informed regarding F5’s ongoing efforts to address the implications of the security breach and the class action’s progress.
