X0306 4 2014-08-01 0 0001262039 FORTINET INC FTNT 0001189229 PAISLEY CHRISTOPHER B C/O FORTINET, INC. 899 KIFER ROAD SUNNYVALE CA 94086 1 0 0 0 Common Stock 2014-08-01 4 M 0 10000 3.735 A 12187 D Common Stock 2014-08-01 4 S 0 10000 24.2746 D 2187 D Non-qualified stock option (right to buy) 3.735 2014-08-01 4 M 0 10000 0 D 2015-04-23 Common Stock 10000 54000 D The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 4, 2013. Represents the aggregate of sales effected on the same day at different prices. Represents the weighted average sales price per share. The shares sold at prices ranging from $23.98 to $24.60 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer. The option is 100% vested and exercisable. /s/ John Whittle, by power of attorney 2014-08-04