|NYSE Arca Ticker||Name||Coupon Valuation Date||Ex-Date||Record Date||Payment||Coupon Amount per Note||Current Yield (annualized)*|
|MLPI||E-TRACS Alerian MLP Infrastructure ETN||9/30/2010||10/8/2010||10/13/2010||10/21/2010||$0.3845||5.50%|
|MLPL||E-TRACS UBS AG 2xMonthly Leveraged Long Alerian MLP Infrastructure ETN||9/30/2010||10/8/2010||10/13/2010||10/21/2010||$0.8365||11.25%|
|MLPG||UBS E-TRACS Alerian Natural Gas MLP Index ETN||9/30/2010||10/8/2010||10/13/2010||10/21/2010||$0.3568||5.44%|
UBS E-TRACs are senior unsecured notes issued by UBS AG, are traded like any other security on NYSE Arca, and can be bought and sold through a broker or financial advisor. For more information about UBS E-TRACs, please visit www.ubs.com/e-tracs.The contents of any website referred to in this free writing prospectus are not part of, or incorporated by reference in, this free writing prospectus. UBS has filed a registration statement (including a prospectus, as supplemented by a prospectus supplement for the offering of the UBS E-TRACS ETNs) with the Securities and Exchange Commission (the “SEC”) for the offering to which this communication relates. Before you invest, you should read these documents and any other documents that UBS has filed with the SEC for more complete information about UBS and the offering to which this communication relates. You may get these documents for free by visiting EDGAR on the SEC website at www.sec.gov. Alternatively, you can request the prospectus and the applicable prospectus supplement by calling toll-free (+1-877-387 2275). Alerian MLP Infrastructure Index, Alerian Natural Gas MLP Index, Alerian MLP Infrastructure Total Return Index, Alerian Natural Gas MLP Total Return Index, AMZI, AMZIX and ANGI are trademarks of Alerian and their use is granted under a license from Alerian. About UBS UBS draws on its 150-year heritage to serve private, institutional and corporate clients worldwide, as well as retail clients in Switzerland. We combine our wealth management, investment banking and asset management businesses with our Swiss operations to deliver superior financial solutions and manage CHF 2.2 trillion in invested assets. UBS is present in all major financial centers worldwide. It has offices in over 50 countries, with about 37% of its employees working in the Americas, 37% in Switzerland, 16% in the rest of Europe and 10% in Asia Pacific. UBS employs about 64,000 people around the world. Its shares are listed on the SIX Swiss Exchange and the New York Stock Exchange (NYSE).