CS Group — Earnings Release 2011

May 13, 2011

Le Plessis - May 13, 2011

Q1 2011 Revenues 4.2% growth

The CS Group recorded total revenues of €51.2 million during the first quarter of 2011, up 4.2% compared to Q1 2010, confirming the return to growth observed in H2 2010.

During the quarter, the Group booked €26.0 million in new orders. As of March 31, 2011, the order book represented over 15 months of revenue.

Revenues1 (in € millions)	Q1 2010	Q1 2011	Q1 2011/Q1 2010
Defense, Space & Security	22.6	22.7	+0.5%
Aeronautics, Energy & Industry*	17.4	17.4	0%
Transportation	6.5	7.7	+18.5%
Products*	2.7	3.7	+37.0%
Eliminations & other	(0.1)	(0.3)	NA
Total CS	49.1	51.2	+4.2%
of which France	36.6	38.2	+4.4%
of which International	12.5	13.0	+4.0%

¹Unaudited figures

As expected, the Defense, Space & Security business unit confirmed its renewed revenue growth trend, which should continue to strengthen in Q2 2011.

Under competitive conditions that remain intense, the Aeronautics, Energy & Industry business unit implements its European alliances in engineering services for the aeronautics and energy segments and pursuing international development.

The Transportation business unit reported sharply higher revenues, confirming the trend observed over the last 3 semester, and booked new orders on the Port Mann Bridge free flow project. In a very active market, revenue is expected to continue to grow in Q2 2011.

The Products business unit (Diginext) posted significant growth in Q1 in both revenues and order booking.

From May 9 to 20, the Group is participating in the NATO Tiger Meet, the largest joint inter-Ally air force gathering held on Europe. Thanks to the solutions (Solstice and TactX) and infrastructures provided by the group in connection with the CLA and SRSA projects, the 17 participating nations will use, for the first time in France, an interface to exchange tactical data links, essential vector in improving operational effectiveness during increasingly complex engagements.

As of March 31, 2011, the Group had a total of 2,076 employees (2,090 as of 12/31/2010 and 2,108 as of 03/31/2011). The average occupation rate for billable employees in Q1 2011 was 82.8% (81.6% for FY 2010 and 83.0% in Q1 2010).

CS is a major actor in the design, integration and operation of mission critical systems. CS is listed on the Euronext Paris stock markets - Compartment C (Shares: Euroclear 7896 / ISIN FR 0007317813). For more information, please go to: www.c-s.fr

Press relations Barbara GOARANT Tel.: +33 (0)1 41 28 46 94 Investors contact Hugues ROUGIER Tel.: +33 (0)1 41 28 44 44