Notes to the Financial Statements

a) InsightOne: In early July 2007, UBS agreed to a settlement of the InsightOne case after the New York State Attorney General filed a civil complaint regarding UBS's fee-based brokerage program for private clients in the United States in December 2006. UBS denies that the program was part of a scheme to disadvantage clients but chose to settle to bring the proceedings to an end. Under the settlement, UBS will pay a total of USD 23.3 million, of which USD 21.3 million will be paid to certain current and former InsightOne customers pursuant to an agreed-upon remediation plan, and USD 2 million will be paid in penalties. In 2006, UBS established provisions sufficient to cover the settlement, and therefore the settlement will not impact UBS's Net profit in 2007.

b) Tax Shelter: In connection with a criminal investigation of tax shelters, the United States Attorney's Office for the Southern District of New York (US Attorney's Office) is examining UBS's conduct in relation to certain tax-oriented transactions in which UBS and others engaged during the years 1996-2000. Some of these transactions were subject to the Deferred Prosecution Agreement which the accounting firm KPMG LLP entered into with the US Attorney's Office in August 2005, and are at issue in United States v. Stein, S1 05 Cr. 888 (LAK). UBS is cooperating with the government's investigation.

c) Municipal Bonds: In November 2006, UBS and others received subpoenas from the US Department of Justice, Antitrust Division, and the US Securities and Exchange Commission. These subpoenas concern UBS's conduct relating to derivative transactions entered into with municipal bond issuers, and to the investment of proceeds of municipal bond issuances. UBS is cooperating in these investigations.

d) HealthSouth: UBS is defending itself in two purported securities class actions brought in the US District Court of the Northern District of Alabama by holders of stock and bonds in HealthSouth Corp. UBS also is a defendant in HealthSouth derivative litigation in Alabama State Court and has responded to an SEC investigation relating to UBS's role as a banker for HealthSouth.

e) Bankruptcy Estate of Enron: In June 2007, UBS and Enron settled adversarial proceedings in the US Bankruptcy Court for the Southern District of New York brought by Enron to avoid and recover payments made prior to filing for bankruptcy in connection with equity forward and swap transactions. UBS believes it had valid defenses to all of Enron's claims but chose to settle to eliminate the uncertainty created by the proceeding. Under the terms of the settlement, UBS paid Enron USD 115 million and waived a proof of claim for approximately USD 5.5 million that UBS filed in Enron's bankruptcy case. In 2006, UBS recognized a provision for more than half of the settlement amount, with the difference recognized in second quarter 2007. Therefore, the settlement will not materially impact UBS's Net profit in 2007.

f) Parmalat: UBS is involved in a number of proceedings in Italy related to the bankruptcy of Parmalat. These proceedings include, inter alia, claw back proceedings against UBS Limited in connection with a structured finance transaction. Further, UBS is a defendant in two civil damages claims brought by Parmalat, of which one relates to the same structured finance transaction against UBS Limited, while the other against UBS AG relates to certain derivative transactions. In addition, UBS Limited and two UBS employees are the subject of criminal proceedings in Milan, while four UBS current or former employees have been served with a notice of closure of criminal investigations in Parma. Finally, UBS is a defendant in civil actions brought by individual investors on the back of the criminal proceedings in Milan. UBS denies the allegations made against itself and against its employees in these matters and is defending itself vigorously.

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