0000907303-04-000011 S-8 4 20040120 20040120 F5 NETWORKS INC 0001048695 7373 911714307 WA 0930 S-8 33 333-112022 04533071 401 ELLIOT AVE WEST STE 500 SEATTLE WA 98119 2062725555 401 ELLIOT AVE WEST STE 500 SEATTLE WA 98119 F5 LABS INC 19990305 S-8 1 forms8jan2004.txt EX-5.1 3 exh51tos8jan2004.txt EX-10.1 4 exh101tos8jan2004.txt EX-23.1 5 exh231tos8jan2004.txt