X0306 4 2020-11-02 0 0001048695 F5 NETWORKS, INC. FFIV 0001428425 Buse Elizabeth C/O F5 NETWORKS, INC. 801 5TH AVENUE SEATTLE WA 98104 1 0 0 0 Restricted Stock Unit 0.00 2020-11-02 4 A 0 880 0.00 A Common Stock 880 880 D Each Restricted Stock Unit represents a contingent right to receive one share of F5 Networks, Inc. Common Stock on the vest date. Restricted Stock Units will fully vest on the first business day prior to the date of the annual shareholder meeting for fiscal 2020 (to be held in 2021) if the reporting person continues to serve as a director on the vest date, and the corresponding number of shares of Common Stock of F5 Networks, Inc. will be issued to the reporting person on the vest date. If the reporting person continues to provide services to the Company through the vest date, the corresponding number of shares of Common Stock of F5 Networks, Inc. will be issued to the reporting person on the vest date. /s/ Scot F. Rogers by Power of Attorney 2020-11-04