Biotech Values

[DewDiligence]

XOMA Major Shareholders

The table below shows all shareholders who filed their XOMA holdings
on SEC Form 13G during the past 12 months; the figures are accurate
as of 12/31/12. The percentages in the table are as reported to the SEC
and do not take into account dilution from option/warrant exercises.

 
                            Shares    Stake 
 Baker Brothers           27,850,340  31.3% 
 Eastern Capital Ltd       7,433,304   9.0% 
 RA Capital Mgmt           6,698,558   8.2% 
 Fidelity (FMR)            6,108,500   7.5% 
 BlackRock                 5,703,090   7.0%