Form 424B2 UBS AG

?Economic and market factors affecting the terms and market price of Notes prior to maturity — Because structured notes, including the Notes, can be thought of as having a debt component and a derivative component, factors that influence the values of debt instruments and options and other derivatives will also affect the terms and features of the Notes at issuance and the market price of the Notes prior to maturity. These factors include the levels of the underlying assets; the volatility of the underlying assets; any expected dividends on the underlying assets; the correlation of the underlying assets; the time remaining to the maturity of the Notes; interest rates in the markets; geopolitical conditions and economic, financial, political, force majeure and regulatory or judicial events; the creditworthiness of UBS; the then current bid-ask spread for the Notes and the factors discussed under “–Risks Relating to Hedging Activities and Conflicts of Interest — Potential conflicts of interest” below. These and other factors are unpredictable and interrelated and may offset or magnify each other.

?Impact of fees and the use of internal funding rates rather than secondary market credit spreads on secondary market prices — All other things being equal, the use of the internal funding rates described above under “– Estimated Value Considerations” as well as the inclusion in the issue price of the underwriting discount, hedging costs, issuance and other costs and any projected profits are, subject to the temporary mitigating effect of UBS Securities LLC’s and its affiliates’ market making premium, expected to reduce the price at which you may be able to sell the Notes in any secondary market. Risks Relating to Hedging Activities and Conflicts of Interest ?Potential conflicts of interest — UBS and its affiliates may engage in business with any underlying asset issuer, which may present a conflict between the interests of UBS and you, as a holder of the Notes.

There are also potential conflicts of interest between you and the calculation agent, which will be an affiliate of UBS. The calculation agent will determine whether the Notes are subject to an automatic call and the payment at maturity of the Notes, if any, based on observed closing levels of the underlying assets. The calculation agent can postpone the determination of the terms of the Notes if a market disruption event occurs and is continuing on the trade date, any observation date or the final valuation date.

As UBS determines the economic terms of the Notes, including the coupon rate, call threshold levels and downside thresholds, and such terms include the underwriting discount, hedging costs, issuance and other costs and projected profits, the Notes represent a package of economic terms. There are other potential conflicts of interest insofar as an investor could potentially get better economic terms if that investor entered into exchange-traded and/or OTC derivatives or other instruments with third parties, assuming that such instruments were available and the investor had the ability to assemble and enter into such instruments. Additionally, UBS and its affiliates act in various capacities with respect to the Notes, including as a principal, agent or dealer in connection with the sale of the Notes.

Such affiliates, and any other third-party dealers, will derive compensation from the distribution of the Notes and such compensation may serve as an incentive to sell these Notes instead of other investments. Furthermore, given that UBS Securities LLC and its affiliates temporarily maintain a market making premium, it may have the effect of discouraging UBS Securities LLC and its affiliates from recommending sale of your Notes in the secondary market. ?Following certain events, the calculation agent can make adjustments to an underlying asset and the terms of the Notes that may adversely affect the market value of, and return on, the Notes — Following certain events affecting an underlying asset, the calculation agent may make adjustments to its initial level, call threshold level, downside threshold and/or final level, as applicable, and any other term of the Notes and, in some instances, may replace such underlying asset.

However, the calculation agent will not make an adjustment in response to every event that could affect an underlying asset. If an event occurs that does not require the calculation agent to make an adjustment, the market value of, and return on, the Notes may be materially and adversely affected. In addition, all determinations and calculations concerning any such adjustments will be made by the calculation agent.

You should be aware that the calculation agent may make any such adjustment, determination or calculation in a manner that differs from that discussed in the accompanying product supplement or herein as necessary to achieve an equitable result. Following certain events relating to an underlying asset issuer, such as a reorganization event or a delisting or suspension of trading, the determination as to whether the Notes are subject to an automatic call or the amount you receive at maturity may be based on the equity security of a successor to such underlying asset issuer in combination with any cash or any other assets distributed to holders of such underlying asset, if applicable, or on the common stock issued by another company. The occurrence of any such event and the consequent adjustments may materially and adversely affect the value of, and return on, the Notes.

For more information, see the sections “General Terms of the Securities — Antidilution Adjustments for Securities Linked to an Underlying Equity or Equity Basket Asset”, “– Reorganization Events for Securities Linked to an Underlying Equity or Equity Basket Asset” and “– Delisting of, Suspension of Trading in, or Change in Law Affecting, an Underlying Equity” in the accompanying product supplement. ?Potential UBS impact on price — Trading or transactions by UBS or its affiliates in any underlying asset, listed and/or over-the-counter options, futures, exchange-traded funds or other instruments with returns linked to the performance of any underlying asset, may adversely affect the levels of the underlying assets and, therefore, the market value of, and return on, the Notes. ?Potentially inconsistent research, opinions or recommendations by UBS — UBS and its affiliates publish research from time to time on financial markets and other matters that may influence the value of, and return on, the Notes, or express opinions or provide recommendations that are inconsistent with purchasing or holding the Notes.

Any research, opinions or recommendations expressed by UBS or its affiliates may not be consistent with each other and may be modified from time to time without notice. Investors should make their own independent investigation of the merits of investing in the Notes and the underlying assets. Risks Relating to General Credit Characteristics

?Credit risk of UBS — The Notes are unsubordinated, unsecured debt obligations of UBS and are not, either directly or indirectly, an obligation of any third party. Any payment to be made on the Notes, including any repayment of principal, depends on the ability of UBS to satisfy its obligations as they come due. As a result, UBS’ actual and perceived creditworthiness may affect the market value of the Notes.

If UBS were to default on its obligations, you may not receive any payment owed to you under the terms of the Notes and you could lose all of your initial investment. ?The Notes are not bank deposits — An investment in the Notes carries risks which are very different from the risk profile of a bank deposit placed with UBS or its affiliates. The Notes have different yield and/or return, liquidity and risk profiles and would not benefit from any protection provided to deposits.

?If UBS experiences financial difficulties, FINMA has the power to open restructuring or liquidation proceedings in respect of, and/or impose protective measures in relation to, UBS, which proceedings or measures may have a material adverse effect on the terms and market value of the Notes and/or the ability of UBS to make payments thereunder — The Swiss Financial Market Supervisory Authority (“FINMA”) has broad statutory powers to take measures and actions in relation to UBS if (i) it concludes that there is justified concern that UBS is over-indebted or has serious liquidity problems or (ii) UBS fails to fulfill the applicable capital adequacy requirements (whether on a standalone or consolidated basis) after expiry of a deadline set by FINMA. If one of these pre-requisites is met, FINMA is authorized to open restructuring proceedings or liquidation (bankruptcy) proceedings in respect of, and/or impose protective measures in relation to, UBS. The Swiss Banking Act grants significant discretion to FINMA in connection with the aforementioned proceedings and measures.

In particular, a broad variety of protective measures may be imposed by FINMA, including a bank moratorium or a maturity postponement, which measures may be ordered by FINMA either on a stand-alone basis or in connection with restructuring or liquidation proceedings. The resolution regime of the Swiss Banking Act is further detailed in Ordinance of 30 August 2012 of FINMA on the Insolvency of Banks and Securities Dealers, as amended (the “Swiss Banking Insolvency Ordinance”). In restructuring proceedings, FINMA, as resolution authority, is competent to approve the resolution plan.

The resolution plan may, among other things, provide for (a) the transfer of all or a portion of UBS’ assets, debts, other liabilities and contracts (which may or may not include the contractual relationship between UBS and the holders of Notes) to another entity, (b) a stay (for a maximum of two business