SIOEN : Update share buyback program

Regulated Information Update regarding the share buyback program (07/01/2013)

Ardooie - 07/01/2013
In accordance with the regulations with respect to the acquisition of own shares, Sioen Industries nv informs that within the framework of the share buyback program, as announced per 29th October 2012, the following transactions took place in the period from 02/01/2013 till 04/01/2013 included, on the stock exchange market NYSE Euronext Brussels and this in accordance with the mandate given by the Extraordinary General Meeting of 24/04/2009 :

Besides the share buyback program mentioned above, 30 000 Sioen shares have been purchased on
02/01/2013 with the value of 6.63 per share.
After the transactions mentioned above, the total number of own shares amounts to 969 379 on the date of 04/01/2013 or 4.53 % of the total number of outstanding shares.
This information is also available on the website : www.sioen.com.

Sioen Industries group

Sioen Industries nv is a diversified, publicly traded group with an extensive portfolio of products and activities :

spinning, weaving and coating, manufacturing of technical clothing, production of fine chemicals and processing of technical textiles. Sioen Industries is the world leader in coated technical textiles, a strong global player in high-tech protective clothing and a niche specialist in fine chemicals. Full information can be found on www.sioen.com.

For all further information and Investor Relations :

Geert Asselman, CFO

Sioen Industries nv, Fabriekstraat 23, B-8850 Ardooie, Tel. [phone] - Fax [phone]

E-mail : [e-mail] : www.sioen.com

Financial servicing is provided by KBC Bank, BNP Paribas Fortis Bank, ING Bank, Belfius Bank and Bank

Degroof.

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Press release Sioen Industries

07/01/13 - after stock market closing