/C O R R E C T I O N -- Stallergenes/

Antony, France, March 17, 2010 (ots/PRNewswire) - In the news release,
"STALLERGENES 2009 : Further Profit Margin Growth and Significant
Cash Generation Further Profit Margin Growth and Significant Cash
Generation:" issued on 16 Mar 2010 19:50 GMT, by Stallergenes
Bloomberg:GENP@FP over PR Newswire, we are advised by a
representative of the company that in the section headed '2010
outlook' the second paragraph, first sentence should have read "The
effects of the economic crisis and the cost cutting steps taken by
health authorities make uncertain our forecasts for 2010 sales"
rather than "Due to the effects of the economic crisis and the cost
cutting steps taken by health authorities, our 2010 sales guidance
was revised downwards", as originally issued inadvertently. Complete,
corrected release follows:

- Sales up 13%, Operating Profit up 15%, Net Profit up 17%
- Record Free Cash Flow of EUR 17.5 Million (x 3.7)
- Net Cash Position Turned Positive
- Proposed Dividend of 0.55 EUR (up 22%)

The Board of Directors' meeting of 15 March 2010, chaired by
Albert SAPORTA, approved the 2009 consolidated financial statements:

In millions d'Euros 2008 08-Jul 2009 09-Aug
% Var.% % Var.%
Sales 170,9 100,0 16 192,8 100,0 13
Cost of goods sold (39,8) (23,3) 21 (43,1) (22,3) 8
SG&A (72,9) (42,7) 12 (78,9) (40,9) 8
R&D costs (36,6) (21,4) 25 (46,2) (24,0) 26
R&D revenues 6,6 3,9 20 7,6 3,9 14
EBIT 28,1 16,5 11 32,2 16,7 15
Net result, group
share 19,0 11,1 17 22,2 11,5 17
EBITDA 34,3 20,1 14 39,7 20,6 16
Capital
expenditure 18,3 10,7 12 16,0 8,3 -12
Working capital 14,9 8,7 37 12,9 6,7 -13
Free cash flow 4,7 2,8 -28 17,5 9,1 272
Net financial 9,6 -8 (4,9) -151
debts(Net cash)
Equity 82,6 24 102,7 24
Headcount, end of 782 13 873 12
year
EPS, diluted EUR 1,43 17 EUR 1,69 18
Dividend per
share EUR 0,45 13 EUR 0,55 22

2009: significant increase in profitability and financial
position indicators

- Profitable growth to finance the Group's long-term expansion

The 2009 sales growth dynamics (up 13%, 12% organic) as well as
strict control on operating expenses (63.2% of sales vs 66.0% in
2008, before R&D) enabled the Group to both absorb research efforts
(up 26%, representing 24% - gross - of sales) and further improve
profit margins: operating profit totalled EUR 32.2 million, that
underlined an operating profit margin of 16.7% (16.5% in 2008). Net
profit grew for the ninth consecutive year by 17% to EUR 22.2
million, generating an 11.5% net profit margin (11.1% in 2008).

- A particularly sound financial position

Well-controlled capital expenditure and working capital
requirements generated a record free cash flow of EUR 17.5 million (x
3.7 compared to 2008). Net debt declined by EUR 14.5 million. The
Group reports a positive year-end net cash position for the first
time in 10 years, amounting to EUR 4.9 million.

The audit procedures have been performed. As soon as the
management report will have been reviewed, the audit report will be
issued. The Group's 2009 consolidated financial statements are
available from the Group's website: http://www.stallergenes.com.

2010 outlook

The laboratory is focusing its efforts on bringing Oralair(R) to
market, after it was granted a marketing authorisation in 22 European
countries in November 2009, on the registration of Actair(R) in
Europe and on the partnerships it put into place to roll out
Stalair(R) products internationally over the medium term.

The effects of the economic crisis and the cost cutting steps
taken by health authorities make uncertain our forecasts for 2010
sales. Nonetheless, Stallergenes expects further growth of sales in
excess of 8%. Against this background, the laboratory set itself the
objective of increasing its margins, bearing in mind that the greater
part of the cost of the Oralair(R) grasses study in the US had been
incurred by end 2009. The results of this study will be known and
released within the next few weeks.

Significant recent transactions and events

The new research and control laboratories have been completed:
Stallergenes invested EUR 28 million in equipment over the past 5
years to put in place the Stalair(R) programme pharmaceutical
platform, which is now fully operational.

Dividend

In order to demonstrate its confidence in the Group's development
outlook, the Board of Directors will propose to the General Meeting
to be held on 28 May 2010, the distribution of a dividend of EUR 0.55
per share, reflecting a 22% increase over the previous year .

OSRD eligibility

As of 26 March 2010, Stallergenes will be eligible for the OSRD
compartment (Euronext Paris deferred settlement service). This
system, which enables both institutional and individual investors to
use leverage to buy or sell shares, while being regulated by strict
prudent rules, should increase share liquidity.

ABOUT STALLERGENES

Stallergenes is a European biopharmaceutical laboratory
specialising in treatments by immunotherapy for the prevention and
treatment of allergy-related respiratory conditions, such as rhino
conjunctivitis, rhinitis and allergic asthma. Stallergenes is ranked
seventh among French pharmaceutical laboratories[1]. A pioneer and a
leader in immunotherapy treatments by sublingual administration,
Stallergenes dedicates more than 20% (gross) of its sales to its
Research and Development activities, which are primarily directed at
developing a new therapeutic range enabling the provision of
immunotherapy treatments by sublingual tablets.

Stallergenes reported 2009 sales of EUR 193 million, with over
500,000 patients treated with Stallergenes desensitisation products.

Euronext Paris (Compartment B)
SBF 120.
ISIN: FR0000065674
Reuters: GEN.PA
Bloomberg: GEN.FP

For further financial information, please visit our website:
http://www.stallergenes.com

[1] Laboratories marketing products licensed as pharmaceutical
specialties

ots Originaltext: Stallergenes
Im Internet recherchierbar: http://www.presseportal.de

Contact:
CONTACT: Contacts: Albert Saporta, Chairman and CEO,
Tel.+33-1-55-59-20-04, Christian Thiry, Chief Financial Officer,
Tel.+33-1-55-59-20-95, e-mail: investorrelations@stallergenes.fr;
Investor andAnalyst Relations, Lucile de Fraguier, Pavie Finance,
Tel.+33-1-42-15-04-39, e-mail: contact@pavie-finance.com;
Stallergenes PressRelations, Lise Lemonnier, Communication Officer,
Tel. +33-1-55-59-20-96,e-mail: llemonnier@stallergenes.fr