Sec Form 4 Filing - Westend S.A. @ WEIGHT WATCHERS INTERNATIONAL INC - 2018-08-14

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 Westend S.A. 2. Issuer Name and Ticker or Trading Symbol WEIGHT WATCHERS INTERNATIONAL INC [ WTW] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) VALLEY PARK, 44, RUE DE LA VALLEE 3. Date of Earliest Transaction (MM/DD/YY) 08/14/2018 (Street) L-2661 LUXEMBOURG, N4 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ 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 08/14/2018 S 6,000,000 D $ 76 14,818,300 I See footnotes ( 1 ) ( 2 )

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 Westend S.A. VALLEY PARK, 44, RUE DE LA VALLEE L-2661 LUXEMBOURG, N4 X Minne Pascal 44, RUE DE L'INDUSTRIE 1040 BRUSSELS, C9 X Artal Luxembourg S. A. VALLEY PARK, 44, RUE DE LA VALLEE L-2661 LUXEMBOURG, N4 X Artal International S.C.A. VALLEY PARK, 44, RUE DE LA VALLEE L-2661 LUXEMBOURG, N4 X Artal International Management S.A. VALLEY PARK, 44, RUE DE LA VALLEE L-2661 LUXEMBOURG, N4 X Artal Group S.A. VALLEY PARK, 44, RUE DE LA VALLEE L-2661 LUXEMBOURG, N4 X Stichting Administratiekantoor Westend IJSSELBURCHT 3 NL-6825 BS ARNHEM, P7 X Signatures WESTEND S.A., By: /s/ Pascal Minne, Name: Pascal Minne, Title: Director 08/16/2018 Signature of Reporting Person Date ARTAL LUXEMBOURG S.A., By: /s/ Anne Goffard, Name: Anne Goffard, Title: Managing Director 08/16/2018 Signature of Reporting Person Date ARTAL INTERNATIONAL S.C.A., By: Artal International Management S.A., as its managing partner, By: /s/ Anne Goffard, Name: Anne Goffard, Title: Managing Director 08/16/2018 Signature of Reporting Person Date ARTAL INTERNATIONAL MANAGEMENT S.A., By: /s/ Anne Goffard, Name: Anne Goffard, Title: Managing Director 08/16/2018 Signature of Reporting Person Date ARTAL GROUP S.A., By: /s/ Anne Goffard, Name: Anne Goffard, Title: Authorized Person 08/16/2018 Signature of Reporting Person Date STICHTING ADMINISTRATIEKANTOOR WESTEND, By: /s/ Pascal Minne, Name: Pascal Minne, Title: Sole Member of the Board 08/16/2018 Signature of Reporting Person Date /s/ Pascal Minne 08/16/2018 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Mr. Pascal Minne is the sole member of the Board of Stichting Administratiekantoor Westend. Stichting Administratiekantoor Westend is the parent of Westend S.A. Westend S.A. is the parent company of Artal Group S.A. Artal Group S.A. is the parent company of Artal International Management S.A., which is the managing partner of Artal International S.C.A. Artal International S.C.A. is the parent company of Artal Luxembourg S.A. Artal Luxembourg S.A. is the record owner of the shares. ( 2 )Each of the Reporting Persons (other than to the extent it directly holds securities reported herein) disclaims beneficial ownership of the securities held by the other Reporting Persons, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, as amended, each of the Reporting Persons (other than to the extent it directly holds securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

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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