UBS's Basel 2.5 Pillar 3 First Half 2012 report is an update as of 30 June 2012 to the Basel 2.5 Pillar 3 quantitative disclosures published in the firm's Annual Report 2011. It provides additional disclosures on capital, risk and securitization, and should be read in conjunction with the firm's Second Quarter 2012 financial report published on 31 July 2012 and Annual Report 2011 published on 15 March 2012.

The Second Quarter 2012 financial report and Annual Report 2011 are available at

www.ubs.com/investors.

UBS AG

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www.ubs.com