Item 7.01

Regulation FD Disclosure.

On September 20, 2021, F5 Networks, Inc. (“F5”) issued a press release announcing the entry into a Merger Agreement (the “Merger Agreement”) with Threat Stack, Inc., a Delaware corporation (“Threat Stack”), Taurus Merger Sub, Inc., a Delaware corporation and a wholly owned subsidiary of F5 (“Merger Sub”) and Shareholder Representative Services LLC, a Delaware limited liability company, as security holder representative, pursuant to which, subject to the terms and conditions thereof, Merger Sub will merge with and into Threat Stack (the “Merger”), with Threat Stack surviving the Merger and becoming a wholly-owned subsidiary of F5. A copy of this press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K (the “Report”) and incorporated by reference herein.

The information contained in Item 7.01 of this Report, including Exhibit 99.1, shall not be incorporated by reference into any filing of the registrant, whether made before, on or after the date hereof, regardless of any general incorporation language in such filing, unless expressly incorporated by specific reference to such filing. The information contained in Item 7.01 of this Report, including Exhibit 99.1, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section.

Cautionary Note Regarding Forward-Looking Statements

This document contains “forward-looking statements” within the meaning of the federal securities laws, including Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, including, among other things, statements regarding the completion and timing of the Threat Stack acquisition, continuing strength and momentum of F5’s and Threat Stack’s business, past and future financial performance including revenue and operating targers, sequential growth, preliminary and projected revenue information, demand for application security, SaaS and software products, expectations regarding future services and products, expectations regarding future customers, markets and the benefits of products, and other statements that are not historical facts and which are forward-looking statements. These forward-looking statements are subject to the safe harbor provisions created by the Private Securities Litigation Reform Act of 1995. Actual results could differ materially from those projected in the forward-looking statements as a result of certain risk factors. Such forward-looking statements involve risks and uncertainties, as well as assumptions and other factors that, if they do not fully materialize or prove correct, could cause the actual results, performance or achievements of the company, or industry results, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, but are not limited to: customer acceptance of F5 offerings including Threat Stack; potential disruptions to F5’s business and distraction of management as F5 integrates Threat Stack’s business and team; F5’s ability to successfully integrate Threat Stack’s products with F5 technologies; the ability of F5’s sales professionals and distribution partners to sell Threat Stack’s product and service offerings; the timely development, introduction and acceptance of additional new products and features by F5 or its competitors; competitive factors, including but not limited to pricing pressures, industry consolidation, entry of new competitors into F5’s markets, and new product and marketing initiatives by our competitors; increased sales discounts; the business impact of the acquisition of Threat Stack and potential adverse reactions or changes to business or employee relationships, including those resulting from the announcement or completion of the acquisition; uncertainties as to the timing of the Threat Stack transaction; uncertain global economic conditions which may result in reduced customer demand for our products and services and changes in customer payment patterns; global economic conditions and uncertainties in the geopolitical environment; overall information technology spending; litigation involving patents, intellectual property, shareholder and other matters, and governmental investigations; natural catastrophic events; continuation or worsening of the current COVID-19 pandemic; future pandemic or epidemic; F5’s ability to sustain, develop and effectively utilize distribution relationships; F5’s ability to attract, train and retain qualified product development, marketing, sales, professional services and customer support personnel; F5’s ability to expand in international markets; the unpredictability of F5’s sales cycle; future prices of F5’s common stock; and other risks and uncertainties described more fully in our documents filed with or furnished to the U.S. Securities and Exchange Commission, including our most recent reports on Form 10-K and Form 10-Q and current reports on Form 8-K and other documents that we may file or furnish from time to time, which could cause actual results to vary from expectations. The financial information contained in this document should be read in conjunction with the consolidated financial statements and notes thereto included in F5’s most recent reports on Forms 10-Q and 10-K as each may be amended from time to time. All forward-looking statements in this document are based on information available as of the date hereof and qualified in their entirety by this cautionary statement. F5 assumes no obligation to revise or update these forward-looking statements.