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FOR IMMEDIATE RELEASE

F5 Networks to Present at Baird's 2009 Growth Stock Conference

SEATTLE, May 08, 2009

F5 Networks, Inc. (NASDAQ: FFIV), the global leader in Application Delivery Networking, today announced that company management will participate in Baird's 2009 Growth Stock Conference, held at the Four Seasons Hotel in Chicago, IL.

F5's presentation will begin at 10:40 a.m. CT on Tuesday, May 12. F5 representatives for the conference will include John McAdam, President and Chief Executive Officer, and Andy Reinland, SVP and Chief Finance Officer.

Interested viewers can go to www.f5.com/about/investor-relations/events-calendar.html to access a direct link to the webcast for the presentation, which will be accessible through June 10, 2009.

About F5 Networks

F5 Networks is a global leader in Application Delivery Networking (ADN), focused on ensuring the secure, reliable, and fast delivery of applications. F5's flexible architectural framework enables community-driven innovation that helps organizations enhance IT agility and dynamically deliver services that generate true business value. F5's vision of unified application and data delivery offers customers an unprecedented level of choice in how they deploy ADN solutions. It redefines how application, server, storage, and network resources are aligned and managed to streamline application delivery and reduce costs. Global enterprise organizations, service providers, and Web 2.0 content providers worldwide trust F5 to keep their business moving forward. For more information, go to www.f5.com.

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