EXHIBIT 11
CASTLE BANCGROUP, INC.
COMPUTATION OF PER SHARE EARNINGS
The components of basic and diluted EPS for the six month periods ended June 30,
2000 and 1999 were as follows: (dollars in thousands, except share data)
2000 1999
-------------------------------------------------------------------------------
Basic EPS:
Net earnings 1,486 1,584
Average common shares 4,375,031 4,352,254
========= =========
Basic EPS .34 .36
========= =========
Diluted EPS:
Net earnings 1,486 1,584
Average common shares 4,375,031 4,352,254
Assumed exercise of stock options 39,662 58,058
--------- ---------
Average common shares after assumed conversions 4,414,693 4,410,312
========= =========
Diluted EPS .34 .36
========= =========
===============================================================================
24
<PAGE>