Fortinet, Inc. — Director's Dealing 2010

May 19, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: FORTINET INC (FTNT)
CIK: 0001262039
Period of Report: 2010-05-17

Reporting Person: WALECKA JOHN L (Director, 10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-05-17	Common Stock	J	2000000	—	Disposed	5813452	Indirect
2010-05-17	Common Stock	J	614000	—	Acquired	614000	Indirect
2010-05-17	Common Stock	J	614000	—	Disposed	0	Indirect
2010-05-17	Common Stock	J	46245	—	Disposed	134422	Indirect
2010-05-17	Common Stock	J	86498	—	Acquired	86498	Indirect
2010-05-17	Common Stock	J	19817	—	Acquired	19817	Indirect

Footnotes

F1: Represents a change in the form of beneficial ownership from one form of indirect ownership to another by virtue of a pro-rata in-kind distribution of Common Stock of the Issuer by Redpoint Ventures II, L.P. ("RV II LP") without consideration to its limited partners and its general partner, Redpoint Ventures II, LLC ("RV II LLC").

F2: Represents a change in the form of beneficial ownership from one form of indirect ownership to another by virtue of a pro-rata in-kind distribution of Common Stock of the Issuer received by RV II LLC in the distribution described in footnote (1) by RV II LLC without consideration to the members of RV II LLC.

F3: Represents a change in the form of beneficial ownership from one form of indirect ownership to another by virtue of a pro-rata in-kind distribution of Common Stock of the Issuer by Redpoint Associates II, LLC ("RA II") without consideration to its members.

F4: The Reporting Person is a Managing Director of RV II LLC, which serves as the general partner of RV II LP. RV II LLC and RA II are under common control. As such, the Reporting Person shares voting and investment power over the shares held by RV II LP, RV II LLC and RA II. The Reporting Person disclaims beneficial ownership of the shares held by RV II LP, RV II LLC and RA II except to the extent of his proportionate pecuniary interest therein.

F5: Represents the receipt of shares of Common Stock of the Issuer by virtue of the pro-rata in-kind distributions described in footnotes (2) and (3) above as follows: (i) 79,276 shares from RV II LLC; and (ii) 7,222 shares from RA II. 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.

F6: Represents the receipt of shares of Common Stock of the Issuer by virtue of the pro-rata in-kind distribution described in footnote (2). 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. The Reporting Person disclaims beneficial ownership of the shares held by Walecka LP except to the extent of his proportionate pecuniary interest therein.