Sec Form 4 Filing - Hara George @ FORTINET INC - 2010-05-27

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Hara George 2. Issuer Name and Ticker or Trading Symbol FORTINET INC [ FTNT] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O FORTINET, INC. 1090 KIFER ROAD 3. Date of Earliest Transaction (MM/DD/YY) 05/27/2010 (Street) SUNNYVALE, CA94086 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 05/27/2010 J( 1 ) 86,621 D $ 0 4,560 I See footnote ( 2 ) Common Stock 05/27/2010 S 4,560 D $ 16.2071 ( 3 ) 0 I See footnote ( 2 ) Common Stock 05/27/2010 J( 1 ) 45,590 A $ 0 45,590 I See footnote ( 4 ) Common Stock 866,668 I See footnote ( 5 ) Common Stock 533,333 I See footnote ( 6 ) Common Stock 336,000 I See footnote ( 7 ) Common Stock 213,334 I See footnote ( 8 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Hara George C/O FORTINET, INC. 1090 KIFER ROAD SUNNYVALE, CA94086 X Signatures /s/ George Hara 06/01/2010 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Pro rata distribution of the Common Stock of the Issuer by Defta Archipelago, LLC ("DA") without consideration to its members. ( 2 )Shares held directly by DA. The Reporting Person is a director of Defta, Inc., the manager of DA, and may be deemed to share voting and dispositive power over the shares that may be deemed beneficially held by DA. The Reporting Person disclaims beneficial ownership of all such shares, except to the extent of his pecuniary interest therein. ( 3 )The sale price reported in column 4 of Table I represents the weighted average sale price of the shares sold ranging from $16.20 to $16.215 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. ( 4 )Shares held directly by Technology Advisory Group, LLC ("TAG"). The Reporting Person is the director of TAG and may be deemed to share voting and dispositive power over the shares that may be deemed beneficially held by TAG. The Reporting Person disclaims beneficial ownership of all such shares, except to the extent of his pecuniary interest therein. ( 5 )Shares held directly by Defta Alliance Fund II, L.P. ("DAF"). The Reporting Person is a managing member of Coba Management, LLC ("Coba Mgmt"), the general partner of DAF, and may be deemed to share voting and dispositive power over the shares that may be deemed beneficially held by DAF. The Reporting Person disclaims beneficial ownership of all such shares, except to the extent of his pecuniary interest therein. ( 6 )Shares held directly by Coba Mgmt. The Reporting Person is a managing member of Coba Mgmt and may be deemed to share voting and dispositive power over the shares that may be deemed beneficially held by Coba Mgmt. The Reporting Person disclaims beneficial ownership of all such shares, except to the extent of his pecuniary interest therein. ( 7 )Shares held directly by Defta Fortinet Holdings, LP ("DFH"). The Reporting Person is a managing member of Coba Mgmt, the general partner of DFH, and may be deemed to share voting and dispositive power over the shares that may be deemed beneficially held by DFH. The Reporting Person disclaims beneficial ownership of all such shares, except to the extent of his pecuniary interest therein. ( 8 )Shares held directly by Defta Ubiquitous Technologies, LP ("DUT"). The Reporting Person is a managing member of Coba International, the general partner of DUT, and may be deemed to share voting and dispositive power over the shares that may be deemed beneficially held by DUT. The Reporting Person disclaims beneficial ownership of all such shares, except to the extent of his pecuniary interest therein.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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