Prospectus excerpt:  XOMA Corporation is offering 1,400,000 depositary shares, each representing a 1/1000th fractional interest in a share of 8.375% Series B Cumulative Perpetual Preferred Stock (the “Series B Preferred Stock”), which we refer to in this prospectus as the depositary shares. 1,400 shares of Series B Preferred Stock underlying the depositary shares will be deposited with American Stock Transfer & Trust Company, LLC, as depositary. As a holder of the depositary shares, you will be entitled to all proportional rights, preferences and privileges of the Series B Preferred Stock represented thereby, including dividend, voting, redemption and liquidation rights and preferences. The proportionate liquidation preference of each depositary share is $25.00.