Fortinet, Inc. — Director's Dealing 2011

May 23, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: FORTINET INC (FTNT)
CIK: 0001262039
Period of Report: 2011-05-20

Reporting Person: GOLDMAN KENNETH A (VP & Chief Financial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-05-20	Common Stock	M	11000	$7.44	Acquired	11000	Direct
2011-05-20	Common Stock	S	11000	$48.4622	Disposed	0	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-05-20	Employee Stock Option (right to buy)	$7.44	M	11000	Disposed	2017-09-20	Common Stock (11000)	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 August 27, 2010.

F2: The sale price reported in column 4 of Table I represents the weighted average sale price of the shares sold ranging from $47.83 to $48.73 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

F3: One forty-eighth of the shares subject to the option vested on October 20, 2007 and one forty-eighth of the shares shall vest monthly thereafter.