Fmi Common Stock Fund N-CSRS Certified semi-annual shareholder report (management investment company)

Certification Pursuant to Section 906 of the Sarbanes-Oxley Act

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-CSRS of the FMI Common Stock Fund, Inc. for the period ended March 31, 2009 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-CSRS fairly presents, in all material respects, the financial condition and results of operations of FMI Common Stock Fund, Inc.

/s/Ted D. Kellner

Ted D. Kellner

Chief Executive Officer and

Chief Financial Officer

FMI Common Stock Fund, Inc.

Dated:  May 4, 2009

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.