Fortinet, Inc. — Director's Dealing 2010

May 28, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: FORTINET INC (FTNT)
CIK: 0001262039
Period of Report: 2010-05-26

Reporting Person: WALECKA JOHN L (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-05-26	Common Stock	S	56498	$16.25	Disposed	0	Indirect
2010-05-26	Common Stock	S	9817	$16.24	Disposed	0	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	5813452	Indirect
Common Stock	134422	Indirect

Footnotes

F1: Price reflected is the weighted-average sale price for shares sold. The range of sale prices for the transactions reported was $16.18 to $16.28 per share. The Reporting Person undertakes to provide, upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

F2: The shares are held by the Walecka 1992 Living Trust udt dated December 31, 1992 ("Walecka Trust"). The Reporting Person is a trustee and beneficiary of the Walecka Trust.

F3: The shares are held by Walecka Enterprises I, L.P. ("Walecka LP"). The Reporting Person is the General Manager of Walecka Capital LLC which serves as the general partner of Walecka LP.

F4: The Reporting Person is a Managing Director of Redpoint Ventures II, LLC, which serves as the general partner of Redpoint Ventures II, L.P. ("RV II LP"). The Reporting Person is a Manager of Redpoint Associates II, LLC ("RA II"). As such, the Reporting Person shares voting and investment power over the shares held by RV II LP and RA II. The Reporting Person disclaims beneficial ownership of the shares held by RV II LP and RA II except to the extent of his proportionate pecuniary interest therein.