Exhibit 32.2
CERTIFICATION PURSUANT TO
SECTION 1350, CHAPTER 63 OF TITLE 18, UNITED STATES CODE,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
     In connection with the accompanying Annual Report of Main Street Capital Corporation (the “Company”) on Form 10-K for the year ended December 31, 2008 (the “Report”), I, Todd A. Reppert, President and Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that:
     (1) The Report fully complies with the requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934, as amended; and
     (2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.
         
     
Date: March 13, 2009  By:   /s/ Todd A. Reppert    
    Todd A. Reppert   
    President and Chief Financial Officer