We, the undersigned, have learnt that the validity of the Power of Attorney of A. ("A. [in Kurzform]") to O. [Anwaltskanzlei AG] is challenged by the counterparties in the pending ordinary proceedings (HOR.2017.38). In this context, we herewith state as follows: In our capacity as directors and representatives of A. [in Kurzform], we confirm that A. [in Kurzform] validly mandated O. [Anwaltskanzlei AG] to represent A. [in Kurzform] in all matters concerning "C. / S. /