0000950134-07-007404 10-K/A 4 20050930 20070403 20070403 F5 NETWORKS INC 0001048695 3576 911714307 WA 0930 10-K/A 34 000-26041 07744037 401 ELLIOT AVE WEST STE 500 SEATTLE WA 98119 2062725555 401 ELLIOT AVE WEST STE 500 SEATTLE WA 98119 F5 LABS INC 19990305 10-K/A 1 v28656a3e10vkza.htm AMENDMENT TO FORM 10-K EX-31.1 2 v28656a3exv31w1.txt EXHIBIT 31.1 EX-31.2 3 v28656a3exv31w2.txt EXHIBIT 31.2 EX-32.1 4 v28656a3exv32w1.txt EXHIBIT 32.1