Arseus: Disclosure of acquisition of treasury shares

Waregem (Belgium) / Rotterdam (the Netherlands)[1], 7 March 2013 – Arseus discloses the information with respect to the acquisition of treasury shares required under Article 207 of the Royal Decree of 30 January 2001 implementing the Belgian Company Code.

Arseus today announces that during the period from 27 February to 7 March 2013, it acquired 40,512 treasury shares on NYSE Euronext Brussels (through an intermediate, acting with a discretionary mandate).

Acquisition date Number of shares Average price Lowest price Highest price Amount 27 February 2013 13,374 € 19.6024 € 19.40 € 19.65 € 262,162 28 February 2013 15,000 € 19.9852 € 19.88 € 20.22 € 299,778 1 March 2013 3,144 € 19.9608 € 19.89 € 20.13 € 62,757 5 March 2013 1,368 € 20.3028 € 20.26 € 20.34 € 27,774 6 March 2013 4,004 € 20.3547 € 20.40 € 20.47 € 81,500 7 March 2013 3,622 € 20.3973 € 20.30 € 20.49 € 73,879

In addition, during the period from 27 February to 7 March 2013, Arseus acquired 102,875 treasury shares via various block trades.

Acquisition date Block Price Amount 27 February 2013 10,000 € 19.5800 € 195,800 27 February 2013 7,500 € 19.6300 € 147,225 28 February 2013 15,000 € 20.1000 € 301,500 28 February 2013 20,000 € 19.9700 € 399,400 28 February 2013 40,375 € 19.9500 € 805,481 7 March 2013 10,000 € 20.3800 € 203,800

The Extraordinary Shareholders’ Meeting held on 16 June 2009 renewed the authorisation of the Board of Directors to acquire treasury shares.

Prior to the transactions, Arseus already held 651,775 treasury shares. As a result of the transactions referred to above, Arseus now holds 795,162 treasury shares, representing 2.54% of the total number of shares outstanding.

In the event of any discrepancy between the English translation and the original Dutch version of this press release, the latter shall prevail.