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.

February 2011:

Baker Communications Fund (Cayman), L.P., New York, USA, informed us pursuant to section 21 para. 1 sentence 1 WpHG that on February 01, 2011 its voting rights in QSC AG, Cologne, fell short of the threshold of 20 % and on this day amount to 18.41 %. This corresponds to 25,257,242 voting rights.
Baker Capital Partners (Anguilla), LLC, New York, USA, informed us pursuant to section 21 para. 1 sentence 1 WpHG that on February 01, 2011 its voting rights in QSC AG, Cologne, fell short of the threshold of 20 % and on this day amount to 18.44 %. This corresponds to 25,299,058 voting rights. Of these voting rights, 18.41 % (25,257,242 voting rights) are attributed to Baker Capital Partners (Anguilla), LLC pursuant to section 22 para. 1 sentence 1 No. 1 WpHG. They are attributed via Baker Communications Fund (Cayman), L.P, which is an entity controlled by Baker Capital Partners (Anguilla), LLC.
Baker Communications Fund II (Cayman), L.P., New York, USA, informed us pursuant to section 21 para. 1 sentence 1 WpHG that on February 01, 2011 its voting rights in QSC AG, Cologne, fell short of the threshold of 3 % and on this day amount to 0.00 %. This corresponds to 0 voting rights.
Baker Capital Partners II (Anguilla), LLC, New York, USA, informed us pursuant to section 21 para. 1 sentence 1 WpHG that on February 01, 2011 its voting rights in QSC AG, Cologne, fell short of the threshold of 3 % and on this day amount to 0.03 %. This corresponds to 41,818 voting rights.
Mr. John C. Baker, USA, informed us pursuant to section 21 para. 1 sentence 1 WpHG that on February 01, 2011 his voting rights in QSC AG, Cologne, fell short of the thresholds of 25 % and 20 % and on this day amount to 18.48 %. This corresponds to 25,350,876 voting rights. Of these voting rights, 18.47 % (25,340,876 voting rights) are attributed to Mr. John C. Baker pursuant to section 22 para. 1 sentence 1 No. 1 WpHG. Of these attributed voting rights, 18.41 % (25,257,242 voting rights) are held by Baker Communications Fund (Cayman), L.P. and are attributed to Mr. John C. Baker via Baker Capital Partners (Anguilla), LLC.

Cologne, in February 2011

QSC AG
The Management Board

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