Umicore

Transaction in Own Shares • Aug 23, 2011

Share information 23 August 2011 CP-2011-29-R 08:30 CET

Acquisition of own shares

On the basis of Article 207 of the Royal Decree of 30 January 2001, as amended on 26 April 2009, implementing the Belgian Companies Code, Umicore announces the following share buy-back transactions effected on the regulated market of NYSE Euronext Brussels :

Date of acquisition	Number of shares	Average price (EUR)	Highest price (EUR)	Lowest price (EUR)
16/08/2011	26,000	32.44	32.93	31.95
17/08/2011	28,000	32.74	33.18	31.93
18/08/2011	35,000	31.48	32.49	30.00
19/08/2011	38,538	29.59	30.31	28.79

All details related to the acquisition of own shares by Umicore can be found on: http://www.umicore.com/investorrelations/en/shareInformation/buyBack

For more information

Director of Group Communications:

Mr. Tim WEEKES	+32 2 227 73 98	+32 473 98 49 14	tim.weekes@umicore.com