X0306 4 2016-05-28 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 2016-05-28 4 M 0 2800.0 0.0 A 75973 D Restricted Stock Units 0.0 2016-05-28 4 M 0 2800.0 0.0 D 2013-05-28 Common Shares 2800 0 D Each restricted stock unit represents the right to receive, at settlement, one share of common stock. This nondiscretionary transaction represents the settlement of vested restricted stock units in shares of common stock. These restricted stock units are scheduled to vest in substantially equal installments annually over three years, with the first installment vesting on May 28, 2014. By: Diane Wilcock For: Joseph M. Limber 2016-05-31