Lectra — Regulatory Filings 2011

Jun 8, 2011

Monthly declaration of the total number of shares and voting rights composing the company's capital (at May 31, 2011)

This declaration is established in accordance with Article L.233-8 II of the French Code de Commerce and of Article 223-11 of the Règlement Général of the Autorité des marchés financiers (AMF).

Date:

May 31, 2011

Total number of shares composing the capital:

28,881,585

Total number of voting rights, gross (1):

29,362,196

Total number of voting rights, net (2):

29,305,538

(1) In accordance with the second paragraph of article 223-11 of the Règlement Général of the AMF, the gross total of voting rights is based of the total number of shares composing the company's capital which have voting rights, including shares deprived of their voting rights

(2) The net total of voting rights is equal to the gross total, minus the number of shares deprived of their voting rights (treasury shares)

Other than the legal notification requirements for crossing the thresholds established by French law, there is no special statutory obligation.

Lectra • 16 – 18, rue Chalgrin • 75016 Paris • France Société anonyme au capital de € 27 640 648,58 • 300 702 305 RCS Paris www.lectra.com