F5, Inc. Faces Class Action Lawsuit Over Security Breach
Written by Emily J. Thompson, Senior Investment Analyst
Updated: Feb 01 2026
0mins
Should l Buy FFIV?
Source: Globenewswire
- Class Action Filed: Bronstein, Gewirtz & Grossman LLC has initiated a class action lawsuit against F5, Inc., alleging violations of federal securities laws during the period from October 28, 2024, to October 27, 2025, seeking to recover damages for affected investors.
- Allegations of Misrepresentation: The complaint claims that F5 made materially false and misleading statements to investors, failing to disclose the true state of its security capabilities, which led shareholders to purchase F5 securities at artificially inflated prices.
- Impact of Security Breach: The lawsuit highlights that F5 was experiencing a significant security breach during the class period, which compromised key product offerings and impaired the company's ability to capitalize on market opportunities.
- Investor Rights Protection: Investors have until February 17, 2026, to request to be appointed as lead plaintiff, with the law firm offering services on a contingency fee basis, ensuring that investors only pay if the case is successful.
Trade with 70% Backtested Accuracy
Stop guessing "Should I Buy FFIV?" and start using high-conviction signals backed by rigorous historical data.
Sign up today to access powerful investing tools and make smarter, data-driven decisions.
Analyst Views on FFIV
Wall Street analysts forecast FFIV stock price to rise
10 Analyst Rating
1 Buy
8 Hold
1 Sell
Hold
Current: 262.020
Low
260.00
Averages
287.56
High
320.00
Current: 262.020
Low
260.00
Averages
287.56
High
320.00
About FFIV
F5, Inc. is a provider of multi-cloud application security and delivery solutions. The Company enables its customers to deploy, operate, secure, optimize, and govern every application and application programming interface (API) across any architecture, on-premises, in the cloud, at the edge and across hybrid, multi-cloud environments. Its enterprise-grade application services are available as hardware, software, and software-as-a-service solutions optimized for hybrid, multicloud environments, with modules that can run independently, or as part of an integrated solution on its high-performance appliances. Through its BIG-IP, F5 NGINX and F5 Distributed Cloud Services products, it offers a range of integrated, artificial intelligence- and machine learning-driven solutions that support performance and protect applications and APIs across data center, cloud, and edge locations. Its products and solutions also include F5 Distributed Cloud CDN and F5 NGINX Ingress Controller, among others.
About the author
Emily J. Thompson
Emily J. Thompson, a Chartered Financial Analyst (CFA) with 12 years in investment research, graduated with honors from the Wharton School. Specializing in industrial and technology stocks, she provides in-depth analysis for Intellectia’s earnings and market brief reports.
Faruqi & Faruqi Investigates F5 Securities Claims for Investors
- Litigation Investigation: Faruq & Faruqi LLP is investigating potential securities claims against F5, Inc., particularly for investors who purchased securities between October 28, 2024, and October 27, 2025, urging them to contact the firm before the February 17, 2026 deadline to seek lead plaintiff status.
- Security Breach Allegations: F5 is accused of failing to disclose the true state of its security capabilities, particularly during a significant security breach affecting key products, which could severely impact the company's ability to capitalize on the security market.
- Financial Forecast Downgrade: In its October 27, 2025 earnings report, F5 revealed that its growth expectations for fiscal 2026 were significantly below market expectations, primarily due to the security breach leading to reduced sales and renewals, elongated sales cycles, and increased remediation costs, highlighting the serious challenges the company faces.
- Stock Price Volatility: F5's stock price fell dramatically from $290.41 at the close on October 27, 2025, to $258.76 on October 29, 2025, marking a 10.9% decline in just two days, reflecting the market's pessimistic outlook on the company's future prospects.
See More
Reminder of Securities Class Action Against F5, Inc.
- Litigation Deadline: Investors must file lead plaintiff applications in the securities class action against F5, Inc. by February 17, 2026, for securities purchased between October 28, 2024, and October 27, 2025, or risk losing their right to recover losses.
- Legal Allegations: F5 and certain executives are accused of failing to disclose material information during the class period, violating federal securities laws, which could lead to significant economic losses for investors and damage the company's reputation and future financing capabilities.
- Declining Financial Performance: On October 27, 2025, F5 announced fourth-quarter fiscal year 2025 results that fell significantly below market expectations, forecasting reductions in sales and renewals for fiscal 2026, elongated sales cycles, and increased expenses, directly impacting shareholder confidence.
- Stock Price Volatility: F5's share price plummeted from $290.41 on October 27, 2025, to $258.76 on October 28, 2025, marking a 10.9% decline, reflecting market concerns about the company's future outlook and investor panic.
See More
F5 Faces Class Action Lawsuit Amid Significant Stock Decline
- Class Action Initiated: Robbins Geller Rudman & Dowd LLP has announced a class action lawsuit against F5, Inc., alleging violations of the Securities Exchange Act of 1934 by the company and its executives, reflecting strong investor dissatisfaction with financial transparency.
- Stock Price Volatility: Following the disclosure of a sophisticated nation-state attack on its systems on October 15, 2025, F5's stock price fell nearly 14% over two trading days, indicating a severe loss of market confidence in the company's security and future growth prospects.
- Financial Outlook Downgraded: F5's fourth-quarter fiscal 2025 results significantly missed market expectations, with anticipated reductions in sales and renewals for fiscal 2026 leading to an additional nearly 11% stock price drop over two days, highlighting the profound impact of the security incident on the company's operations.
- Lead Plaintiff Process Explained: Under the Private Securities Litigation Reform Act of 1995, any investor who purchased F5 securities during the class period can seek to be appointed as lead plaintiff, demonstrating active investor engagement in pursuing legal remedies that may influence future litigation outcomes.
See More
F5, Inc. Faces Securities Class Action Lawsuit
- Lawsuit Background: Hagens Berman law firm is initiating a securities class action against F5, Inc., alleging that executives misled investors about the security of its core BIG-IP products, resulting in over $2 billion in losses.
- Security Incident Disclosure: In October 2025, F5 revealed that its systems had been infiltrated by a nation-state actor, with sensitive source code downloaded, causing shares to plummet nearly 14% over two trading days, highlighting severe market concerns about its security.
- Financial Outlook Downgrade: F5's Q4 FY25 results released on October 27, 2025, fell significantly short of market expectations, with anticipated reductions in sales and renewals due to the security breach, leading to a 7% drop in stock price and indicating a bleak growth outlook.
- Investor Action: Hagens Berman is urging investors who purchased F5 shares between October 28, 2024, and October 27, 2025, to contact them to participate in the lawsuit and seek compensation, indicating that the legal risks faced by the company may further impact its market performance.
See More
F5, Inc. Shares Plummet Amid Class Action Lawsuit
- Stock Price Plunge: F5, Inc. shares fell from $343.17 on October 14, 2025, to $295.35, a 13.9% drop, and further declined to $258.76 by October 28, reflecting a total decline of approximately 25%, indicating significant market concerns regarding operational impacts.
- Revenue Guidance Downgrade: The company dramatically revised its fiscal 2026 revenue growth forecast from mid-single digits to 0-4%, a change that highlights the operational fallout from an undisclosed security breach, potentially undermining investor confidence.
- Customer Relationship Challenges: The security incident reportedly led to reduced sales and renewals, elongated sales cycles as customers reassessed their relationships, and increased remediation costs, compounding the financial strain on the company.
- Class Action Notice: Levi & Korsinsky, LLP reminds purchasers of F5 securities of a pending class action lawsuit for securities bought between October 28, 2024, and October 27, 2025, with a deadline of February 17, 2026, for investors to seek lead plaintiff status for compensation.
See More
F5, Inc. Securities Class Action Reminder for Investors
- Deadline for Claims: ClaimsFiler reminds investors that those who purchased F5, Inc. securities between October 28, 2024, and October 27, 2025, must file lead plaintiff applications by February 17, 2026, to participate in the securities class action lawsuit and protect their rights.
- Lawsuit Context: F5 and certain executives are accused of failing to disclose material information during the class period, violating federal securities laws, which may expose them to legal liabilities as investors made decisions based on incomplete information.
- Performance Decline Impact: On October 27, 2025, F5 reported fiscal results that significantly missed market growth expectations for 2026, citing reduced sales and renewals, elongated sales cycles, and increased expenses due to a security breach, which directly impacted the company's stock price.
- Stock Price Volatility: Following the earnings announcement, F5's share price plummeted from $290.41 to $258.76, a 10.9% decline within two days, reflecting market concerns over the company's future performance and a loss of investor confidence.
See More
Faruqi & Faruqi Investigates F5 Securities Claims for Investors
- Litigation Investigation: Faruq & Faruqi LLP is investigating potential securities claims against F5, Inc., particularly for investors who purchased securities between October 28, 2024, and October 27, 2025, urging them to contact the firm before the February 17, 2026 deadline to seek lead plaintiff status.
- Security Breach Allegations: F5 is accused of failing to disclose the true state of its security capabilities, particularly during a significant security breach affecting key products, which could severely impact the company's ability to capitalize on the security market.
- Financial Forecast Downgrade: In its October 27, 2025 earnings report, F5 revealed that its growth expectations for fiscal 2026 were significantly below market expectations, primarily due to the security breach leading to reduced sales and renewals, elongated sales cycles, and increased remediation costs, highlighting the serious challenges the company faces.
- Stock Price Volatility: F5's stock price fell dramatically from $290.41 at the close on October 27, 2025, to $258.76 on October 29, 2025, marking a 10.9% decline in just two days, reflecting the market's pessimistic outlook on the company's future prospects.
See More
Reminder of Securities Class Action Against F5, Inc.
- Litigation Deadline: Investors must file lead plaintiff applications in the securities class action against F5, Inc. by February 17, 2026, for securities purchased between October 28, 2024, and October 27, 2025, or risk losing their right to recover losses.
- Legal Allegations: F5 and certain executives are accused of failing to disclose material information during the class period, violating federal securities laws, which could lead to significant economic losses for investors and damage the company's reputation and future financing capabilities.
- Declining Financial Performance: On October 27, 2025, F5 announced fourth-quarter fiscal year 2025 results that fell significantly below market expectations, forecasting reductions in sales and renewals for fiscal 2026, elongated sales cycles, and increased expenses, directly impacting shareholder confidence.
- Stock Price Volatility: F5's share price plummeted from $290.41 on October 27, 2025, to $258.76 on October 28, 2025, marking a 10.9% decline, reflecting market concerns about the company's future outlook and investor panic.
See More
F5 Faces Class Action Lawsuit Amid Significant Stock Decline
- Class Action Initiated: Robbins Geller Rudman & Dowd LLP has announced a class action lawsuit against F5, Inc., alleging violations of the Securities Exchange Act of 1934 by the company and its executives, reflecting strong investor dissatisfaction with financial transparency.
- Stock Price Volatility: Following the disclosure of a sophisticated nation-state attack on its systems on October 15, 2025, F5's stock price fell nearly 14% over two trading days, indicating a severe loss of market confidence in the company's security and future growth prospects.
- Financial Outlook Downgraded: F5's fourth-quarter fiscal 2025 results significantly missed market expectations, with anticipated reductions in sales and renewals for fiscal 2026 leading to an additional nearly 11% stock price drop over two days, highlighting the profound impact of the security incident on the company's operations.
- Lead Plaintiff Process Explained: Under the Private Securities Litigation Reform Act of 1995, any investor who purchased F5 securities during the class period can seek to be appointed as lead plaintiff, demonstrating active investor engagement in pursuing legal remedies that may influence future litigation outcomes.
See More
F5, Inc. Faces Securities Class Action Lawsuit
- Lawsuit Background: Hagens Berman law firm is initiating a securities class action against F5, Inc., alleging that executives misled investors about the security of its core BIG-IP products, resulting in over $2 billion in losses.
- Security Incident Disclosure: In October 2025, F5 revealed that its systems had been infiltrated by a nation-state actor, with sensitive source code downloaded, causing shares to plummet nearly 14% over two trading days, highlighting severe market concerns about its security.
- Financial Outlook Downgrade: F5's Q4 FY25 results released on October 27, 2025, fell significantly short of market expectations, with anticipated reductions in sales and renewals due to the security breach, leading to a 7% drop in stock price and indicating a bleak growth outlook.
- Investor Action: Hagens Berman is urging investors who purchased F5 shares between October 28, 2024, and October 27, 2025, to contact them to participate in the lawsuit and seek compensation, indicating that the legal risks faced by the company may further impact its market performance.
See More
F5, Inc. Shares Plummet Amid Class Action Lawsuit
- Stock Price Plunge: F5, Inc. shares fell from $343.17 on October 14, 2025, to $295.35, a 13.9% drop, and further declined to $258.76 by October 28, reflecting a total decline of approximately 25%, indicating significant market concerns regarding operational impacts.
- Revenue Guidance Downgrade: The company dramatically revised its fiscal 2026 revenue growth forecast from mid-single digits to 0-4%, a change that highlights the operational fallout from an undisclosed security breach, potentially undermining investor confidence.
- Customer Relationship Challenges: The security incident reportedly led to reduced sales and renewals, elongated sales cycles as customers reassessed their relationships, and increased remediation costs, compounding the financial strain on the company.
- Class Action Notice: Levi & Korsinsky, LLP reminds purchasers of F5 securities of a pending class action lawsuit for securities bought between October 28, 2024, and October 27, 2025, with a deadline of February 17, 2026, for investors to seek lead plaintiff status for compensation.
See More
F5, Inc. Securities Class Action Reminder for Investors
- Deadline for Claims: ClaimsFiler reminds investors that those who purchased F5, Inc. securities between October 28, 2024, and October 27, 2025, must file lead plaintiff applications by February 17, 2026, to participate in the securities class action lawsuit and protect their rights.
- Lawsuit Context: F5 and certain executives are accused of failing to disclose material information during the class period, violating federal securities laws, which may expose them to legal liabilities as investors made decisions based on incomplete information.
- Performance Decline Impact: On October 27, 2025, F5 reported fiscal results that significantly missed market growth expectations for 2026, citing reduced sales and renewals, elongated sales cycles, and increased expenses due to a security breach, which directly impacted the company's stock price.
- Stock Price Volatility: Following the earnings announcement, F5's share price plummeted from $290.41 to $258.76, a 10.9% decline within two days, reflecting market concerns over the company's future performance and a loss of investor confidence.
See More
