Capital

Under Swiss company law, shareholders have to approve in a shareholders' meeting any increase in the total number of issued shares, which may be an ordinary share capital increase or the creation of conditional or authorized capital. At year-end 2006, the ordinary share capital was CHF 210,527,328.60.

At the Annual General Meeting (AGM) on 19 April 2006, shareholders gave the Board of Directors a mandate to continue a repurchase program during 2006 / 2007 for a maximum amount of CHF 5 billion. At the AGM on 18 April 2007, shareholders will be asked to approve the cancellation of 33,020,000 shares repurchased under this program and to reduce the ordinary share capital accordingly.

Conditional and authorized share capital

At year-end 2006, total conditional share capital amounted to CHF 15,143,741.00, corresponding to a maximum of 151,437,410 shares. Conditional capital was created in 2000 in connection with the acquisition of PaineWebber Group Inc. to cover option rights granted by the PaineWebber Group to its employees. In addition, at the 2006 AGM, shareholders approved conditional capital in the amount of 150 million UBS shares to be used for employee option grants limited to a period of three years. Options under both plans are exercisable at any time between their vesting and the expiry date. Shareholders' pre-emptive rights are excluded. In 2006 options with respect to 2,208,242 shares were exercised under the PaineWebber option plans, and 1,350 options expired without being exercised. No new shares using conditional capital were issued relating to the UBS employee stock option plans.

Changes of shareholders' equity

Equity attributable to UBS shareholders for the Group amounted to CHF 49.7 billion on 31 December 2006.

Shares, participation and bonus certificates, capital securities

UBS shares are issued as Global Registered Shares. Each share has a par value of CHF 0.10 and carries one vote. Voting rights may, however, only be exercised if the holder expressly declares having acquired these shares in his own name and for his own account. Global Registered Shares provide direct and equal ownership for all shareholders, ­irrespective of the country and stock exchange where they are traded.

On 31 December 2006, 1,059,699,907 shares carried voting rights, 265,631,846 shares were entered in the share register without voting rights, and 779,941,533 shares were not registered. All 2,105,273,286 shares were fully paid up, and 2,082,673,286 shares ranked for dividends. There are no preferential rights for individual shareholders.

UBS has not issued any participation certificates or bonus certificates.

In 2006, UBS raised USD 1 billion hybrid Tier 1 capital in the form of trust preferred shares. Additionally, UBS tapped the capital markets seven times and raised USD 3.0 billion, EUR 750 million, CHF 800 million and GBP 300 million in subordinated debt to fund its operations with capital securities. At year-end UBS had CHF 5.6 billion in preferred shares outstanding which count as Tier 1 capital under regulatory rules. Outstanding Tier 2 capital securities accounted for CHF 13.1 billion in eligible capital as of 31 December 2006.

Limitation on transferability and nominee registration

UBS does not apply any restrictions or limitations on the transferability of its shares. Shares registered according to the provisions in the Articles of Association (express declaration of beneficial ownership) may be voted without any limit in scope.

UBS has issued special provisions for the registration of fiduciaries / nominees. Fiduciaries / nominees are entered in the share register with voting rights up to a total of 5% of all shares issued, if they agree to disclose, upon request from the firm, beneficial owners holding 0.3% or more of all UBS shares. An exception to the 5% rule exists for securities clearing organizations such as The Depository Trust Company (DTC) in New York and SIS SegaInterSettle in Switzerland.

Convertible bonds and options

UBS currently has no convertible debt on UBS shares outstanding. Employee options outstanding amounted to 176,779,087, of which a total of 80,312,503 were exercisable. UBS satisfies share delivery obligations under its option based participation plans either by purchasing UBS shares in the market on grant date or shortly thereafter or through the issuance of new shares. At exercise, shares held in treasury or newly issued shares are delivered to the employee against receipt of the strike price. As of 31 December 2006, UBS was holding approximately 118 million shares in treasury and an additional 150 million shares in conditional share capital which are available and can be used for future employee option exercises. The shares available cover all vested employee options.

The Investment Bank, acting as liquidity provider to the equity futures market and as a market maker in UBS shares and derivatives, has issued derivatives linked to UBS stock. Most of these instruments are classified as cash-settled derivatives and are held for trading purposes only. To hedge the economic exposure, a limited number of UBS shares are held by the Investment Bank.