30 Treasury shares audited information (XLS:) Download Quantity in CHF thousands As at 1 January 2016 1'978'202 168'584 Purchases 0 0 Disposals −18'964 −1'539 As at 31 December 2016 1'959'238 167'045 Purchases 0 0 Disposals −36'301 −3'159 As at 31 December 2017 1'922'937 163'886