1. Johnson Fistel investigates F5 for possible securities law violations. 2. Unauthorized access by a nation-state threat occurred in August 2025. 3. F5 disclosed a breach involving BIG-IP source code and vulnerabilities. 4. Following disclosures, F5 share prices experienced a decline.
The investigation and recent breach indicate potential mishandling of sensitive information, similar to past data breaches leading to stock declines in tech firms.
The investigation and breach are critical for F5's reputation and stock performance, as investor trust may waver.
The immediate effect of the breach and investigation will likely influence investor sentiment quickly, as seen in past incidents with companies like Equifax.
SAN DIEGO, Nov. 10, 2025 (GLOBE NEWSWIRE) -- Shareholder rights law firm Johnson Fistel, PLLP, is investigating whether F5, Inc. (NASDAQ:FFIV) or certain of its officers and directors violated federal securities laws by misrepresenting or failing to timely disclose material information to investors.
On October 15, 2025, F5 disclosed that the company learned on August 9, 2025 that a highly sophisticated nation-state threat actor had gained unauthorized access to certain internal systems. The company stated that the threat actor maintained persistent access to the BIG-IP product development environment and engineering knowledge systems, exfiltrating files that included portions of BIG-IP source code and information regarding undisclosed vulnerabilities. Following this disclosure, the price of F5 shares declined.
What if I purchased F5 securities? If you purchased FFIV securities and suffered losses, join our investigation now: https://www.johnsonfistel.com/investigations/f5-inc-investigation/
For more information, contact Jim Baker at jimb@johnsonfistel.com or (619) 814-4471. There is no cost or obligation to you.
About Johnson Fistel, PLLP | Top Law Firm, Securities Fraud, Investors Rights: Johnson Fistel, PLLP is a nationally recognized shareholder rights law firm with offices in California, New York, Georgia, Idaho, and Colorado. The firm represents individual and institutional investors in shareholder derivative and securities class action lawsuits. We also extend our services to foreign investors who have purchased on US exchanges. For more information, please visit http://www.johnsonfistel.com.
Achievements: In 2024, Johnson Fistel was honored to be ranked in the Top 10 Plaintiff Law Firms by the ISS Securities Class Action Services. The firm recovered approximately $90,725,000 for investors in cases where it served as lead or co-lead counsel. This marks the eighth time the firm has been recognized among the top securities law firms in the United States.
Attorney advertising.
Past results do not guarantee future outcomes.
Services may be performed by attorneys in any of our offices.
Johnson Fistel, PLLP has paid for the dissemination of this promotional communication, and Frank J. Johnson is the attorney responsible for its content.
Contact:
Johnson Fistel, PLLP
501 W. Broadway, Suite 800, San Diego, CA 92101
James Baker, Investor Relations or Frank J. Johnson, Esq.
(619) 814-4471
jimb@johnsonfistel.com or fjohnson@johnsonfistel.com
