SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 
FORM 6-K
 
REPORT OF FOREIGN PRIVATE ISSUER
 
PURSUANT TO RULE 13a-16 OR 15d-16 OF
THE SECURITIES EXCHANGE ACT OF 1934
 
Report on Form 6-K dated October 7, 2008
 
Commission File No. 0-28578
 
DASSAULT SYSTEMES S.A.
(Name of Registrant)
 
9, Quai Marcel Dassault, B.P. 310, 92156 Suresnes Cedex, France
(Address of Principal Executive Offices)
 
Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F
or Form 40-F
 
Form 20-F                                                           Form 40-F  __
 
Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation
S-T Rule 101(b)(1):
Yes                                                     No     
 
Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation
S-T Rule 101(b)(7):
Yes                                                     No     
 
Indicate by check mark whether by furnishing the information contained in this Form, the registrant is
also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the
Securities Exchange Act of 1934:
Yes                                                     No     
 
  If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule
12g3-2(b): 82-          
 

ENCLOSURES:
 
Dassault Systemes S.A. is furnishing under cover of Form 6-K a press release dated October 7, 2008, disclosing trading in its own shares.




 
 Suresnes, October 7th, 2008                           
 
 
 
 
 
DISCLOSURE OF TRADING IN OWN SHARES
(Repurchase program decided by the General Meeting of Shareholders on May 22, 2008)

Issuer: DASSAULT SYSTEMES S.A.
Type of securities: ordinary shares
Period:  from September 26th, 2008 to October 1st, 2008
 


Purchases effected during the period

Date
Transaction
Number of shares
Weighted average unit price
Amounts of transactions
09/26/2008
Purchase
70,915
38.65 €
    2,740,663.45 €
09/29/2008
Purchase
88,761
38.00 €
    3,373,331.47 €
09/30/2008
Purchase
110,000
37.50 €
    4,125,000.00 €
10/01/2008
Purchase
30,324
37.56 €
    1,138,969.44 €
Total
Purchase
300,000
37.93 €
  11,377,964.36 €


During the period, the issuer has not dealt on derivative instruments relating to its equity and has not carried out any purchase or sale of its equity upon exercise or maturity of derivative instruments.



 
CONTACTS:
 
Dassault Systèmes:
Valérie Agathon/Béatrix Martinez
33.1.40.99.69.24
 
 
 

 
SIGNATURES
 
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
 
 
 
  DASSAULT SYSTEMES S.A.  
         
         
Date:  October 7, 2008
By:
/s/ Thibault de Tersant  
  Name: Thibault de Tersant  
  Title: Senior EVP and Chief  
    Financial Officer