0000950124-04-001745 8-K 2 20040421 12 7 20040421 F5 NETWORKS INC 0001048695 7373 911714307 WA 0930 8-K 34 000-26041 04745617 401 ELLIOT AVE WEST STE 500 SEATTLE WA 98119 2062725555 401 ELLIOT AVE WEST STE 500 SEATTLE WA 98119 F5 LABS INC 19990305 8-K 1 v98281e8vk.htm FORM 8-K DATED 04/21/04 EX-99.1 3 v98281exv99w1.htm EXHIBIT 99.1