F5, Inc. Securities Lawsuit Investigation

Shamis & Gentile P.A., a law firm that advocates for investors who are victims of securities fraud, is investigating potential claims against F5, Inc. (FFIV)

If you purchased or acquired F5, Inc. securities between October 2024 and October 2025, you may be eligible to join this securities investigation and seek compensation.

About F5

F5 is a technology company that specializes in application security and delivery, offering products and services designed to protect and optimize the performance of applications across on-premises, cloud, and hybrid environments.

The company’s flagship BIG-IP product line is widely used by enterprises and government agencies to manage network traffic and safeguard digital assets.

Potential Concerns Under Investigation

Lawyers are reviewing whether F5 made misleading statements or omitted material information regarding a major cybersecurity breach.

On October 15, 2025, F5 filed a Form 8-K with the SEC disclosing that it had discovered a “highly sophisticated nation-state” cyberattack on August 9, 2025. According to the filing, attackers maintained long-term access to F5’s internal systems and exfiltrated data from its BIG-IP development environment, including portions of source code and details about undisclosed vulnerabilities. F5 had not previously informed the public of the breach, despite discovering it more than two months earlier.

In addition to investor-related inquiries, lawyers are investigating potential data breach claims on behalf of customers whose personal or confidential information may have been exposed in the incident.

The investigation may also examine whether the Company adequately disclosed risks related to cybersecurity vulnerabilities and internal control weaknesses. F5’s own risk statements warned that such failures could harm its business, financial condition, and reputation, yet investors were not informed of the incident until mid-October.

Attorneys are reviewing whether the Company’s statements in SEC filings and earnings calls; particularly those emphasizing strong security practices and incident-response readiness, accurately reflected what management knew at the time.

The timing and content of public communications are also under scrutiny. During the Q3 2025 earnings call, management stated that “F5 delivers and secures every app and API anywhere,” highlighting strong results and expanding security services without mentioning the ongoing breach. Legal professionals are assessing whether such assurances were misleading in light of the undisclosed cyberattack.

The market reaction was immediate. Following the October 15 announcement, F5’s stock fell about 12%, a decline of roughly $36 per share, causing significant harm to investors.

The investigation will focus on whether these alleged omissions and statements collectively misled investors about the Company’s cybersecurity posture, internal controls, and exposure to ongoing risks.

Your Rights and Next Steps

Investors who purchased or held F5 securities between October 2024 and October 2025, you may have important legal rights. This is an ongoing investigation into potential securities law violations, not a filed lawsuit. If the investigation uncovers evidence of misconduct, it could lead to a class action lawsuit seeking recovery for shareholders.

Lawyers are ready to help investors understand their options and determine if they may be eligible to participate in any potential action. Investors are encouraged to gather records of their F5 transactions during the class period, including purchase and sale dates, amounts, and account statements. By joining the investigation, investors can help ensure their interests are represented and may be able to recover losses if wrongdoing is proven.

Time is often a critical factor in securities investigations. Acting promptly can help preserve your rights and maximize the chances of recovery should a class action move forward.

You May Be Entitled to Compensation

If you purchased or acquired F5 securities between October 2024 and October 2025, you may be eligible to join this investigation and seek compensation. Securities investigations are time-sensitive, and your ability to participate could depend on when you take action.

To take the next step, complete the form below to join the investigation and have your claim reviewed. Lawyers are ready to help evaluate your situation and keep you informed as the investigation progresses.