Proportion of Voting Rights

Under the German Securities Trading Act (WpHG), stockholders are obligated to inform the Company and the Federal Financial Suvervisory Authority (BaFin) immediately if the number of voting rights they hold in a listed company reaches, exceeds or drops below 3%, 5%, 10%, 15%, 20%, 25%, 30%, 50% or 75% as a result of the purchase or sale of shares.

March 2010:
On March 19, 2010, we were informed pursuant to sections 21 (1), 24 WpHG ("German Securities Trading Act") in conjunction with section 32 (2) InvG ("German Investment Act") that the percentage of voting rights of Sal. Oppenheim jr. & Cie. S.C.A., Luxembourg, Luxembourg, in QSC AG, Köln, Germany, fell below the thresholds of 5% and 3% on March 16, 2010 and amounts to 0.00% (0 voting rights) as per this date.

Cologne, March 24, 2010
QSC AG
The Management Board

May 2009:
On May 11, 2009, Deutsche Bank Aktiengesellschaft, Frankfurt am Main, Germany, informed us pursuant to sections 21 para. 1, 24 of the WpHG ("German Securities Trading Act") in conjunction with section 32 para. 2 InvG ("German Investment Act") that the percentage of voting rights of its subsidiary DWS Investment GmbH, Frankfurt am Main, Germany, in QSC AG, Mathias-Brüggen-Straße 55, 50829 Cologne, Germany, fell below the threshold of 3% on May 8, 2009 and amounts to 2.99% (4,100,000 voting rights) as per this date.

Cologne, May 13, 2009
QSC AG
The Management Board

July 2008:
On July 16, 2008, Deutsche Bank Aktiengesellschaft, Frankfurt am Main, Germany, informed us pursuant to sections 21 para. 1, 24 German Securities Trading Act (WpHG) in connection with section 32 para. 2 German Investment Act (InvG) that its subsidiary DWS Investment GmbH, Frankfurt am Main, Germany, has exceeded the threshold of 3% of the voting rights of QSC AG, Mathias-Brüggen-Straße 55, 50829 Köln, Deutschland, on July 14, 2008 and now holds 3.01% of the voting rights (equivalent 4,128,169 voting rights).

Cologne, July 2008
QSC AG
The Management Board

July 2007:
On July 3, 2007, Sal. Oppenheim jr. & Cie. S.C.A., Luxembourg, Luxembourg, informed us pursuant to Section 21 para. 1 German Securities Trading Act (WpHG) that its voting rights in QSC AG, Mathias-Brüggen-Straße 55, 50829 Cologne, exceeded the threshold of 3% and 5% on July 2, 2007 and amount to 5.11% (6,905,000 voting rights). According to its own statement 5.11% (6,905,000 voting rights) thereof are attributed to Sal. Oppenheim jr. & Cie. S.C.A. pursuant to Section 22 para. 1 sentence 1 no. 1 German Securities Trading Act (WpHG). The attribution is conducted via Sal. Oppenheim jr. & Cie. KGaA, which is controlled by Sal. Oppenheim jr. & Cie. S.C.A..

Cologne, July 2007
QSC AG
The Management Board