Sec Form 4 Filing - Stolk Marcel @ LOGITECH INTERNATIONAL SA - 2016-08-05

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 Stolk Marcel 2. Issuer Name and Ticker or Trading Symbol LOGITECH INTERNATIONAL SA [ LOGI] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) SVP, CCP Business Group (Last) (First) (Middle) C/O LOGITECH INTERNATIONAL S.A., LES CHATAGNIS 3. Date of Earliest Transaction (MM/DD/YY) 08/05/2016 (Street) APPLES, V81143 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 Registered Shares 08/05/2016 M 225,000 A $ 7.43 ( 1 ) 478,002 D Registered Shares 08/05/2016 S 225,000 D $ 20.36 ( 2 ) 253,002 D

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 Performance Stock Options (right to buy) $ 7.83 ( 3 ) 08/05/2016 M 225,000 ( 4 ) 01/04/2023 Registered Shares 225,000 $ 0 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Stolk Marcel C/O LOGITECH INTERNATIONAL S.A. LES CHATAGNIS APPLES, V81143 SVP, CCP Business Group Signatures /s/ Jon Shanberge as attorney in fact for Marcel Stolk 08/09/2016 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The reported amount represents the purchase price on the SIX Swiss Exchange of CHF 7.25, as converted into U.S. dollars at the exchange rate of 1 CHF to U.S. $1.02426, as in effect on August 5, 2016. ( 2 )The reported amount represents the weighted average sales price on the SIX Swiss Exchange of CHF 19.88, as converted into U.S. dollars at the exchange rate of 1 CHF to U.S. $1.02426, as in effect on August 5, 2016. Actual sales prices ranged from CHF 19.80 to CHF 19.95, or U.S. $20.28 to U.S. $20.43. The reporting person undertakes to provide to Logitech, any security holder of Logitech, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range. ( 3 )The reported amount represents the exercise price on the SIX Swiss Exchange of CHF 7.25, as converted into U.S. dollars at the CHF exchange rate as in effect on the date of grant. ( 4 )The option vested and became exercisable on January 4, 2015 or later if and only when the average closing price per share of the Company's shares on the NASDAQ Stock Market over a consecutive 90 day period met or exceeded the following performance criteria during the first four years after the date of grant: 25% vest at $11.75, 25% vest at $13.70, and 50% vest at $15.66.

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).

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