0001193125-23-227652.txt : 20230901 0001193125-23-227652.hdr.sgml : 20230901 20230901161256 ACCESSION NUMBER: 0001193125-23-227652 CONFORMED SUBMISSION TYPE: SC 13G PUBLIC DOCUMENT COUNT: 2 FILED AS OF DATE: 20230901 DATE AS OF CHANGE: 20230901 GROUP MEMBERS: ARTAL GROUP S.A. GROUP MEMBERS: ARTAL INTERNATIONAL MANAGEMENT S.A. GROUP MEMBERS: INVUS PUBLIC EQUITIES ADVISORS, LLC GROUP MEMBERS: INVUS PUBLIC EQUITIES, L.P. GROUP MEMBERS: MR. AMAURY WITTOUCK GROUP MEMBERS: STICHTING ADMINISTRATIEKANTOOR WESTEND GROUP MEMBERS: WESTEND S.A. SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: Silence Therapeutics plc CENTRAL INDEX KEY: 0001479615 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 000000000 STATE OF INCORPORATION: X0 FILING VALUES: FORM TYPE: SC 13G SEC ACT: 1934 Act SEC FILE NUMBER: 005-92205 FILM NUMBER: 231232670 BUSINESS ADDRESS: STREET 1: 72 HAMMERSMITH ROAD CITY: LONDON STATE: X0 ZIP: W14 8TH BUSINESS PHONE: 44-0-20-3457 6900 MAIL ADDRESS: STREET 1: 72 HAMMERSMITH ROAD CITY: LONDON STATE: X0 ZIP: W14 8TH FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: Artal International S.C.A. CENTRAL INDEX KEY: 0001218180 IRS NUMBER: 000000000 FILING VALUES: FORM TYPE: SC 13G BUSINESS ADDRESS: STREET 1: VALLEY PARK STREET 2: 44, RUE DE LA VALLEE CITY: LUXEMBOURG STATE: N4 ZIP: L-2661 BUSINESS PHONE: 352224259-1 MAIL ADDRESS: STREET 1: VALLEY PARK STREET 2: 44, RUE DE LA VALLEE CITY: LUXEMBOURG STATE: N4 ZIP: L-2661 FORMER COMPANY: FORMER CONFORMED NAME: ARTAL INTERNATIONAL SCA DATE OF NAME CHANGE: 20110531 FORMER COMPANY: FORMER CONFORMED NAME: ARTAL INTERNATIONAL SA DATE OF NAME CHANGE: 20030210 SC 13G 1 d546378dsc13g.htm SC 13G SC 13G

 

 

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

 

 

SCHEDULE 13G

Under the Securities Exchange Act of 1934*

(Amendment No.    )

 

 

Silence Therapeutics plc

(Name of Issuer)

Ordinary Shares, nominal value £0.05 per share

(Title of Class of Securities)

82686Q101**

(CUSIP Number)

August 24, 2023

(Date of Event Which Requires Filing of this Statement)

 

 

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

☐ Rule 13d-1(b)

☒ Rule 13d-1(c)

☐ Rule 13d-1(d)

 

*

The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

**

This CUSIP number applies to the Issuer’s American Depositary Shares, each representing three ordinary shares of the Issuer.

The information required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

 

 

 


CUSIP No. 82686Q101

 

  1    

  NAMES OF REPORTING PERSONS

 

  Invus Public Equities, L.P.

  2  

  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

  (a)  ☐        (b)  ☐

 

  3  

  SEC USE ONLY

 

  4  

  CITIZENSHIP OR PLACE OF ORGANIZATION

 

  Bermuda

NUMBER OF

SHARES

 BENEFICIALLY 

OWNED BY

EACH

REPORTING

PERSON

WITH

   5    

  SOLE VOTING POWER

 

  7,500,000*

   6  

  SHARED VOTING POWER

 

  0

   7  

  SOLE DISPOSITIVE POWER

 

  7,500,000*

   8  

  SHARED DISPOSITIVE POWER

 

  0

  9    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  7,500,000*

10  

  CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

 

  ☐

11  

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

  6.8%

12  

  TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

 

  PN

 

*

Invus Public Equities, L.P. holds an aggregate of 2,500,000 American Depositary Shares (“ADSs”), each of which ADS represents three ordinary shares, nominal value £0.05 per share, totaling 7,500,000 ordinary shares of the Issuer.

 

2


CUSIP No. 82686Q101

 

  1    

  NAMES OF REPORTING PERSONS

 

  Invus Public Equities Advisors, LLC

  2  

  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

  (a)  ☐        (b)  ☐

 

  3  

  SEC USE ONLY

 

  4  

  CITIZENSHIP OR PLACE OF ORGANIZATION

 

  Delaware

NUMBER OF

SHARES

 BENEFICIALLY 

OWNED BY

EACH

REPORTING

PERSON

WITH

   5    

  SOLE VOTING POWER

 

  7,500,000*

   6  

  SHARED VOTING POWER

 

  0

   7  

  SOLE DISPOSITIVE POWER

 

  7,500,000*

   8  

  SHARED DISPOSITIVE POWER

 

  0

  9    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  7,500,000*

10  

  CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

 

  ☐

11  

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

  6.8%

12  

  TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

 

  OO

 

*

Invus Public Equities, L.P. holds an aggregate of 2,500,000 American Depositary Shares (“ADSs”), each of which ADS represents three ordinary shares, nominal value £0.05 per share, totaling 7,500,000 ordinary shares of the Issuer.

 

3


CUSIP No. 82686Q101

 

  1    

  NAMES OF REPORTING PERSONS

 

  Artal International S.C.A.

  2  

  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

  (a)  ☐        (b)  ☐

 

  3  

  SEC USE ONLY

 

  4  

  CITIZENSHIP OR PLACE OF ORGANIZATION

 

  Luxembourg

NUMBER OF

SHARES

 BENEFICIALLY 

OWNED BY

EACH

REPORTING

PERSON

WITH

   5    

  SOLE VOTING POWER

 

  7,500,000*

   6  

  SHARED VOTING POWER

 

  0

   7  

  SOLE DISPOSITIVE POWER

 

  7,500,000*

   8  

  SHARED DISPOSITIVE POWER

 

  0

  9    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  7,500,000*

10  

  CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

 

  ☐

11  

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

  6.8%

12  

  TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

 

  OO

 

*

Invus Public Equities, L.P. holds an aggregate of 2,500,000 American Depositary Shares (“ADSs”), each of which ADS represents three ordinary shares, nominal value £0.05 per share, totaling 7,500,000 ordinary shares of the Issuer.

 

4


CUSIP No. 82686Q101

 

  1    

  NAMES OF REPORTING PERSONS

 

  Artal International Management S.A.

  2  

  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

  (a)  ☐        (b)  ☐

 

  3  

  SEC USE ONLY

 

  4  

  CITIZENSHIP OR PLACE OF ORGANIZATION

 

  Luxembourg

NUMBER OF

SHARES

 BENEFICIALLY 

OWNED BY

EACH

REPORTING

PERSON

WITH

   5    

  SOLE VOTING POWER

 

  7,500,000*

   6  

  SHARED VOTING POWER

 

  0

   7  

  SOLE DISPOSITIVE POWER

 

  7,500,000*

   8  

  SHARED DISPOSITIVE POWER

 

  0

  9    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  7,500,000*

10  

  CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

 

  ☐

11  

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

  6.8%

12  

  TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

 

  OO

 

*

Invus Public Equities, L.P. holds an aggregate of 2,500,000 American Depositary Shares (“ADSs”), each of which ADS represents three ordinary shares, nominal value £0.05 per share, totaling 7,500,000 ordinary shares of the Issuer.

 

5


CUSIP No. 82686Q101

 

  1    

  NAMES OF REPORTING PERSONS

 

  Artal Group S.A.

  2  

  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

  (a)  ☐        (b)  ☐

 

  3  

  SEC USE ONLY

 

  4  

  CITIZENSHIP OR PLACE OF ORGANIZATION

 

  Luxembourg

NUMBER OF

SHARES

 BENEFICIALLY 

OWNED BY

EACH

REPORTING

PERSON

WITH

   5    

  SOLE VOTING POWER

 

  7,500,000*

   6  

  SHARED VOTING POWER

 

  0

   7  

  SOLE DISPOSITIVE POWER

 

  7,500,000*

   8  

  SHARED DISPOSITIVE POWER

 

  0

  9    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  7,500,000*

10  

  CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

 

  ☐

11  

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

  6.8%

12  

  TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

 

  OO

 

*

Invus Public Equities, L.P. holds an aggregate of 2,500,000 American Depositary Shares (“ADSs”), each of which ADS represents three ordinary shares, nominal value £0.05 per share, totaling 7,500,000 ordinary shares of the Issuer.

 

6


CUSIP No. 82686Q101

 

  1    

  NAMES OF REPORTING PERSONS

 

  Westend S.A.

  2  

  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

  (a)  ☐        (b)  ☐

 

  3  

  SEC USE ONLY

 

  4  

  CITIZENSHIP OR PLACE OF ORGANIZATION

 

  Luxembourg

NUMBER OF

SHARES

 BENEFICIALLY 

OWNED BY

EACH

REPORTING

PERSON

WITH

   5    

  SOLE VOTING POWER

 

  7,500,000*

   6  

  SHARED VOTING POWER

 

  0

   7  

  SOLE DISPOSITIVE POWER

 

  7,500,000*

   8  

  SHARED DISPOSITIVE POWER

 

  0

  9    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  7,500,000*

10  

  CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

 

  ☐

11  

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

  6.8%

12  

  TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

 

  OO

 

*

Invus Public Equities, L.P. holds an aggregate of 2,500,000 American Depositary Shares (“ADSs”), each of which ADS represents three ordinary shares, nominal value £0.05 per share, totaling 7,500,000 ordinary shares of the Issuer.

 

7


CUSIP No. 82686Q101

 

  1    

  NAMES OF REPORTING PERSONS

 

  Stichting Administratiekantoor Westend

  2  

  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

  (a)  ☐        (b)  ☐

 

  3  

  SEC USE ONLY

 

  4  

  CITIZENSHIP OR PLACE OF ORGANIZATION

 

  The Netherlands

NUMBER OF

SHARES

 BENEFICIALLY 

OWNED BY

EACH

REPORTING

PERSON

WITH

   5    

  SOLE VOTING POWER

 

  7,500,000*

   6  

  SHARED VOTING POWER

 

  0

   7  

  SOLE DISPOSITIVE POWER

 

  7,500,000*

   8  

  SHARED DISPOSITIVE POWER

 

  0

  9    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  7,500,000*

10  

  CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

 

  ☐

11  

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

  6.8%

12  

  TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

 

  OO

 

*

Invus Public Equities, L.P. holds an aggregate of 2,500,000 American Depositary Shares (“ADSs”), each of which ADS represents three ordinary shares, nominal value £0.05 per share, totaling 7,500,000 ordinary shares of the Issuer.

 

8


CUSIP No. 82686Q101

 

  1    

  NAMES OF REPORTING PERSONS

 

  Mr. Amaury Wittouck

  2  

  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

  (a)  ☐        (b)  ☐

 

  3  

  SEC USE ONLY

 

  4  

  CITIZENSHIP OR PLACE OF ORGANIZATION

 

  Belgium

NUMBER OF

SHARES

 BENEFICIALLY 

OWNED BY

EACH

REPORTING

PERSON

WITH

   5    

  SOLE VOTING POWER

 

  7,500,000*

   6  

  SHARED VOTING POWER

 

  0

   7  

  SOLE DISPOSITIVE POWER

 

  7,500,000*

   8  

  SHARED DISPOSITIVE POWER

 

  0

  9    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  7,500,000*

10  

  CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

 

  ☐

11  

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

  6.8%

12  

  TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

 

  IN

 

*

Invus Public Equities, L.P. holds an aggregate of 2,500,000 American Depositary Shares (“ADSs”), each of which ADS represents three ordinary shares, nominal value £0.05 per share, totaling 7,500,000 ordinary shares of the Issuer.

 

9


Item 1(a).

Name of Issuer:

Silence Therapeutics plc (the “Issuer”)

 

Item 1(b).

Address of Issuer’s Principal Executive Offices:

72 Hammersmith Road, London W14 8TH

 

Item 2(a).

Name of Person Filing:

 

Item 2(b).

Address of Principal Business Office or, if none, Residence:

 

Item 2(c).

Citizenship:

(i) Invus Public Equities, L.P. (“Invus Public Equities”)

750 Lexington Avenue, 30th Floor, New York, NY 10022

Citizenship: Bermuda limited partnership

(ii) Invus Public Equities Advisors, LLC (“Invus PE Advisors”)

750 Lexington Avenue, 30th Floor, New York, NY 10022

Citizenship: Delaware limited liability company

(iii) Artal International S.C.A. (“Artal International”)

Valley Park, 44, Rue de la Vallée, L-2661, Luxembourg

Citizenship: Luxembourg limited partnership

(iv) Artal International Management S.A. (“Artal International Management”)

Valley Park, 44, Rue de la Vallée, L-2661, Luxembourg

Citizenship: Luxembourg société anonyme

(v) Artal Group S.A. (“Artal Group”)

Valley Park, 44, Rue de la Vallée, L-2661, Luxembourg

Citizenship: Luxembourg société anonyme

(vi) Westend S.A. (“Westend”)

Valley Park, 44, Rue de la Vallée, L-2661, Luxembourg

Citizenship: Luxembourg société anonyme

(vii) Stichting Administratiekantoor Westend (the “Stichting”)

Claude Debussylaan, 46, 1082 MD Amsterdam, The Netherlands

Citizenship: Netherlands foundation

(viii) Mr. Amaury Wittouck

Valley Park, 44, Rue de la Vallée, L-2661, Luxembourg

Citizenship: Belgium

The foregoing persons are hereinafter sometimes collectively referred to as the “Reporting Persons.”

 

Item 2(d).

Title of Class of Securities:

Ordinary Shares, nominal value £0.05 per share (the “Shares”)

 

Item 2(e).

CUSIP Number:

The CUSIP Number is 82686Q101. This CUSIP applies to the American Depositary Shares (“ADSs”), evidenced by American Depositary Receipts, each representing three Shares. No CUSIP has been assigned to the Shares.

 

10


Item 3.

If This Statement Is Filed Pursuant to Sections 240.13d-1(b) or 240.13d-2(b) or (c), Check Whether the Person Filing Is a(n):

This Item 3 is not applicable.

 

Item 4.

Ownership.

(a) Amount beneficially owned:

As of the date hereof, Invus Public Equities beneficially owns 7,500,000 Shares represented by an aggregate of 2,500,000 ADSs directly held by Invus Public Equities. Invus PE Advisors, as the general partner of Invus Public Equities, controls Invus Public Equities and accordingly may be deemed to beneficially own the Shares beneficially owned by Invus Public Equities. The Geneva branch of Artal International, as the managing member of Invus PE Advisors, controls Invus PE Advisors and, accordingly, may be deemed to beneficially own the Shares that Invus PE Advisors may be deemed to beneficially own. Artal International Management, as the managing partner of Artal International, controls Artal International and, accordingly, may be deemed to beneficially own the Shares that Artal International may be deemed to beneficially own. Artal Group, as the sole stockholder of Artal International Management, controls Artal International Management and, accordingly, may be deemed to beneficially own the Shares that Artal International Management may be deemed to beneficially own. Westend, as the parent company of Artal Group, controls Artal Group and, accordingly, may be deemed to beneficially own the Shares that Artal Group may be deemed to beneficially own. The Stichting, as the majority stockholder of Westend, controls Westend and, accordingly, may be deemed to beneficially own the Shares that Westend may be deemed to beneficially own. Mr. Wittouck, as the sole member of the board of the Stichting, controls the Stichting and, accordingly, may be deemed to beneficially own the Shares that the Stichting may be deemed to beneficially own.

(b) Percent of class:

Each of the Reporting Persons may be deemed to be the beneficial owner of the percentage of Shares listed on such Reporting Person’s cover page. Calculations of the percentage of Shares beneficially owned are based on 110,242,666 Shares as of June 30, 2023 based on information set forth in the Issuer’s Form 6-K filed with the Securities and Exchange Commission on August 16, 2023.

(c) As of the date hereof, the number of shares as to which Invus Public Equities, Invus PE Advisors, Artal International, Artal International Management, Artal Group, Westend, the Stichting and Mr. Wittouck has:

(i) Sole power to vote or to direct the vote:

7,500,000

(ii) Shared power to vote or to direct the vote:

0

(iii) Sole power to dispose or to direct the disposition of:

7,500,000

(iv) Shared power to dispose or to direct the disposition of:

0

 

Item 5.

Ownership of Five Percent or Less of a Class.

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following  ☐.

 

Item 6.

Ownership of More Than Five Percent on Behalf of Another Person.

This Item 6 is not applicable.

 

11


Item 7.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company.

This Item 7 is not applicable.

 

Item 8.

Identification and Classification of Members of the Group.

This Item 8 is not applicable.

 

Item 9.

Notice of Dissolution of Group.

This Item 9 is not applicable.

 

Item 10.

Certification.

Each of the Reporting Persons hereby makes the following certification:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the Issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

 

12


SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

 

INVUS PUBLIC EQUITIES, L.P.
By:   INVUS PUBLIC EQUITIES ADVISORS, LLC, its general partner
By:  

/s/ Raymond Debbane

Name:   Raymond Debbane
Title:   President
INVUS PUBLIC EQUITIES ADVISORS, LLC
By:  

/s/ Raymond Debbane

Name:   Raymond Debbane
Title:   President
ARTAL INTERNATIONAL S.C.A.
By:   ARTAL INTERNATIONAL MANAGEMENT S.A., its managing partner
By:  

/s/ Anne Goffard

Name:   Anne Goffard
Title:   Managing Director
ARTAL INTERNATIONAL MANAGEMENT S.A.
By:  

/s/ Anne Goffard

Name:   Anne Goffard
Title:   Managing Director
ARTAL GROUP S.A.
By:  

/s/ Anne Goffard

Name:   Anne Goffard
Title:   Authorized Person
WESTEND S.A.
By:  

/s/ Anne Goffard

Name:   Anne Goffard
Title:   Managing Director


STICHTING ADMINISTRATIEKANTOOR WESTEND
By:  

/s/ Amaury Wittouck

Name:   Amaury Wittouck
Title:   Sole Member of the Board

MR. AMAURY WITTOUCK

By:  

/s/ Amaury Wittouck

Dated: September 1, 2023


EXHIBIT INDEX

 

Exhibit
Number

  

Title

1.    Joint Filing Agreement
EX-99.1 2 d546378dex991.htm EX-99.1 EX-99.1

EXHIBIT 1

JOINT FILING AGREEMENT

The undersigned agree that the statement on Schedule 13G with respect to the Ordinary Shares, nominal value £0.05 per share (the “Shares”), of Silence Therapeutics plc. is, and any amendments thereto signed by each of the undersigned shall be, filed on behalf of each of them pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended.

Dated: September 1, 2023

 

INVUS PUBLIC EQUITIES, L.P.
By:   INVUS PUBLIC EQUITIES ADVISORS, LLC, its general partner
By:   /s/ Raymond Debbane
Name:   Raymond Debbane
Title:   President
INVUS PUBLIC EQUITIES ADVISORS, LLC
By:   /s/ Raymond Debbane
Name:   Raymond Debbane
Title:   President
ARTAL INTERNATIONAL S.C.A.
By:   ARTAL INTERNATIONAL MANAGEMENT S.A., its managing partner
By:   /s/ Anne Goffard
Name:   Anne Goffard
Title:   Managing Director
ARTAL INTERNATIONAL MANAGEMENT S.A.
By:   /s/ Anne Goffard
Name:   Anne Goffard
Title:   Managing Director
ARTAL GROUP S.A.
By:   /s/ Anne Goffard
Name:   Anne Goffard
Title:   Authorized Person


WESTEND S.A.
By:   /s/ Anne Goffard
Name:   Anne Goffard
Title:   Managing Director
STICHTING ADMINISTRATIEKANTOOR WESTEND
By:   /s/ Amaury Wittouck
Name:   Amaury Wittouck
Title:   Sole Member of the Board
MR. AMAURY WITTOUCK
By:   /s/ Amaury Wittouck