AT&S Appoints DI Andreas Gerstenmayer as New Chairman of AT&S’s Management Board

In today’s meeting the AT&S supervisory board decided that DI Andreas Gerstenmayer (44) will take over the
position of chairman of the management board as per 1 February 2010. He will succeed Dr Harald Sommerer, who
has been a member of the management board of AT&S since September 1997 and who will resign from the board at the end
of January.

Mr Gerstenmayer studied mechanical engineering at the FH Rosenheim. Following a successful career within
Siemens Group he became partner of FOCUSON Business Consulting. Mr Gerstenmayer is married and has
three children.

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