Fortinet, Inc. — Director's Dealing 2012

May 11, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: FORTINET INC (FTNT)
CIK: 0001262039
Period of Report: 2012-05-10

Reporting Person: Whittle John (VP & General Counsel)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-05-10	Common Stock	M	1042	$8.43	Acquired	1042	Direct
2012-05-10	Common Stock	S	1042	$24.75	Disposed	0	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-05-10	Employee Stock Option (right to buy)	$8.43	M	1042	Disposed	2017-02-10	Common Stock (1042)	Direct

Footnotes

F1: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 6, 2011.

F2: One-fourth of the shares subject to the option vested on February 10, 2011 and one forty-eighth of the shares shall vest monthly thereafter.