Disclosure notification in accordance with Article 20 of the Swiss Stock Exchange Act

16 November 2007, Zurich

In compliance with the Swiss Federal Act on Stock Exchanges and Securities Trading, UBS AG, Bahnhofstrasse 45, 8001 Zurich, notified Swiss Reinsurance Company (Swiss Re), Mythenquai 50/60, 8022 Zurich, the following holding as per 7 November 2007:

Registered shares

Amount of shares: 6'677'300
Amount of Voting rights: 6'677'300
Percentage of voting rights: 1,8%

Conversion, share acquisition and share sales rights, which provide for or allow actual delivery:

Type of rights Number of rights Voting rights conferred
    Amount
in per cent
Converts 211'404 211'404 0,06%
Equity Options 6'727'50 6'727'509 1,82%
Warrants 7'498'099 7'498'099 2,02%
Total   14'437'012 3,9%

Total Holding: 5,7%