X0306 4 2014-03-10 0 0000791908 XOMA Corp XOMA 0001216023 LIMBER JOSEPH M C/O XOMA CORPORATION 2910 SEVENTH STREET BERKELEY CA 94710 1 0 0 0 Common Shares 2014-03-10 4 M 0 5600 0 A 5600 D Restricted Stock Units 0 2014-03-10 4 M 0 5600 0 D 2015-12-12 Common Shares 5600 11200 D These restricted stock units are scheduled to vest in substantially equal installments annually over three years, with the first installment vesting on December 12, 2013. Each restricted stock unit represents the right to receive, upon vesting, one share of common stock. This nondiscretionary transaction represents the vesting of restricted stock units as shares of common stock. By: Fred Kurland For: Joseph M. Limber 2014-03-11