Umicore

Transaction in Own Shares • Dec 20, 2011

Share information 20 December 2011 CP-2011-56-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)
12/12/2011	40,000	31.29	31.99	30.70
13/12/2011	38,000	31.26	31.59	30.76
14/12/2011	40,000	30.44	31.44	29.96
15/12/2011	45,000	30.22	30.70	29.78
16/12/2011	45,000	30.61	30.82	30.17
Total for the week	208,000	30.74	31.99	29.78
Total in 2011	2,769,648	30.09	33.86	24.60

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

Investor Relations:

Mr. Geoffroy RASKIN	+32 2 227 71 47	geoffroy.raskin@umicore.com
Mrs Evelien GOOVAERTS	+32 2 227 78 38	evelien.goovaerts@umicore.com

Umicore Group Communications

Naamloze vennoolschap / Société Anonyme phone +32 2 227 71 11 VAT BE0401 574 852 Broekstraat 31 Rue du Marais fax +32 2 227 79 00 Company number 0401574852 B-1000 Brussels e-mail info@umicore.com Registered office Broekstraat 31 Rue du Marais Belgium web www.umicore.com B-1000 Brussels