EXHIBIT 10.1 F5 NETWORKS, INC. NONQUALIFIED STOCK OPTION AGREEMENT THIS NONQUALIFIED STOCK OPTION AGREEMENT (the "Agreement") is made and entered into as of October 20, 2003 (the "Grant Date") between F5 Networks, Inc., a Washington corporation (the...Nonqualified Stock Option Agreement • January 20th, 2004 • F5 Networks Inc • Services-computer integrated systems design • Washington
