Fortinet, Inc. — Director's Dealing 2010

Nov 3, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: FORTINET INC (FTNT)
CIK: 0001262039
Period of Report: 2010-11-01

Reporting Person: Whittle John (VP & General Counsel)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-11-01	Common Stock	M	3125	$2.40	Acquired	3125	Direct
2010-11-01	Common Stock	S	725	$32.0921	Disposed	2400	Direct
2010-11-01	Common Stock	S	900	$34.3767	Disposed	1500	Direct
2010-11-01	Common Stock	S	1100	$35.1582	Disposed	400	Direct
2010-11-01	Common Stock	S	400	$36.0525	Disposed	0	Direct
2010-11-03	Common Stock	M	25000	$7.47	Acquired	25000	Direct
2010-11-03	Common Stock	S	25000	$31.0305	Disposed	0	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-11-01	Employee Stock Option (right to buy)	$2.40	M	3125	Disposed	2016-10-26	Common Stock (3125)	Direct
2010-11-03	Employee Stock Option (right to buy)	$7.47	M	25000	Disposed	2015-04-23	Common Stock (25000)	Direct

Footnotes

F1: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 30, 2009, as amended.

F2: The sale price reported in column 4 of Table I represents the weighted average sale price of the shares sold ranging from $31.75 to $32.71 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 within the ranges set forth in footnotes (2), (3), (4), (5) and (7) to this Form 4.

F3: The sale price reported in column 4 of Table I represents the weighted average sale price of the shares sold ranging from $33.63 to $34.58 per share.

F4: The sale price reported in column 4 of Table I represents the weighted average sale price of the shares sold ranging from $34.74 to $35.68 per share.

F5: The sale price reported in column 4 of Table I represents the weighted average sale price of the shares sold ranging from $35.84 to $36.25 per share.

F6: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 30, 2010.

F7: The sale price reported in column 4 of Table I represents the weighted average sale price of the shares sold ranging from $30.87 to $31.28 per share.

F8: Shares subject to the option are fully vested and immediately exercisable.

F9: One-fourth of the shares subject to the option vested on April 23, 2009 and one forty-eighth of the shares shall vest monthly thereafter.