CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT
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     Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, the undersigned
officer of the FMI Common Stock Fund, Inc. hereby certifies, to such officer's
knowledge, that the report on Form N-CSR of the FMI Common Stock Fund, Inc. for
the period ended March 31, 2005 fully complies with the requirements of Section
13(a) or 15(d) of the Securities Exchange Act of 1934 and information contained
in the Form N-CSR fairly presents, in all material respects, the financial
condition and results of operations of FMI Common Stock Fund, Inc.

/s/Ted D. Kellner
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Ted D. Kellner
Chief Executive Officer and
Chief Financial Officer
FMI Common Stock Fund, Inc.


Dated: 5/19/05
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A signed original of this written statement required by Section 906 has been
provided by the FMI Common Stock Fund, Inc. and will be retained by the FMI
Common Stock Fund, Inc. and furnished to the SEC or its staff upon request.