F5, Inc.
Case Overview
38 Days Left to Seek Lead Plaintiff
| Lead Plaintiff Deadline: | Lead Plaintiff Deadline: 02/17/2026 |
| Status: | Status: Investigating |
| Company Name: | Company Name: F5, Inc. |
| Court: | Court: Western District of Washington |
| Case Number: | Case Number: 2:25cv02619 |
| Class Period: | Class Period: 10/28/2024 - 10/27/2025 |
| Ticker: | Ticker: FFIV |
| Related Attorneys: | Lead Attorneys: Thomas W. Elrod |
| Related Practices: | Related Practices: Securities |
The law firm of Kirby McInerney LLP announces that a class action lawsuit has been filed on behalf of investors who acquired F5, Inc. (“F5” or the “Company”) (NASDAQ:FFIV) securities during the period of October 28, 2024 through October 27, 2025, inclusive (“the Class Period”).
The lawsuit alleges that F5 provided overwhelmingly positive statements to investors about its cybersecurity capabilities and effectiveness, disseminating materially false and misleading statements and/or concealing material adverse facts concerning the true state of F5’s security capabilities; notably, that it was not truly equipped to safely secure data for its clients as F5 itself was, for all relevant times, experiencing a significant security breach of some of its key offerings and, further, that the revelation of this breach would significantly impact F5’s potential to capitalize on the security market.
On October 15, 2025, F5 revealed that it had learned in early August that a “highly sophisticated nation-state threat actor had gained unauthorized access to certain F5 systems.” The Company added, “during the course of its investigation, F5 determined that the threat actor maintained long-term, persistent access to certain F5 systems, including the BIG-IP product development environment and engineering knowledge management platform,” and that “through this access, certain files were exfiltrated, some of which contained certain portions of the Company’s BIG-IP source code and information about undisclosed vulnerabilities that it was working on in BIG-IP.” On this news, the price of F5 shares declined by $35.40 per share, or approximately 10.70%, from $330.75 per share on October 15, 2025 to close at $295.35 on October 16, 2025.
The lawsuit alleges that F5 provided overwhelmingly positive statements to investors about its cybersecurity capabilities and effectiveness, disseminating materially false and misleading statements and/or concealing material adverse facts concerning the true state of F5’s security capabilities; notably, that it was not truly equipped to safely secure data for its clients as F5 itself was, for all relevant times, experiencing a significant security breach of some of its key offerings and, further, that the revelation of this breach would significantly impact F5’s potential to capitalize on the security market.
On October 15, 2025, F5 revealed that it had learned in early August that a “highly sophisticated nation-state threat actor had gained unauthorized access to certain F5 systems.” The Company added, “during the course of its investigation, F5 determined that the threat actor maintained long-term, persistent access to certain F5 systems, including the BIG-IP product development environment and engineering knowledge management platform,” and that “through this access, certain files were exfiltrated, some of which contained certain portions of the Company’s BIG-IP source code and information about undisclosed vulnerabilities that it was working on in BIG-IP.” On this news, the price of F5 shares declined by $35.40 per share, or approximately 10.70%, from $330.75 per share on October 15, 2025 to close at $295.35 on October 16, 2025.