Main Street Capital Announces Participation in Morgan Keegan 2008 Equity Conference

HOUSTON, Aug. 28 /PRNewswire-FirstCall/ -- Main Street Capital Corporation (Nasdaq: MAIN) ("Main Street") announced today that Vincent D. Foster, Chairman and Chief Executive Officer, and Todd A. Reppert, President and Chief Financial Officer, will participate in the Morgan Keegan 2008 Equity Conference to be held in Memphis, Tennessee on September 3-5, 2008. Main Street is scheduled to present on Thursday, September 4, 2008 at 7:30 a.m. Central Time. The Morgan Keegan 2008 Equity Conference website is located at http://www.morgankeegan/MK/conferences/MKEC2008_welcome.htm.

A copy of Main Street's Morgan Keegan 2008 Equity Conference presentation will be available on the investor relations section of the company's website at http://www.mainstcapital.com prior to the scheduled time for the presentation.

ABOUT MAIN STREET CAPITAL CORPORATION

Main Street (http://www.mainstcapital.com) is a principal investment firm that provides long-term debt and equity capital to lower middle market companies. Main Street's investments are generally made to support management buyouts, recapitalizations, growth financings and acquisitions of companies that operate in diverse industry sectors and generally have annual revenues ranging from $10 to $100 million. Main Street seeks to partner with entrepreneurs, business owners and management teams and generally provides "one-stop" financing alternatives to its portfolio companies.

     Contacts:
     Main Street Capital Corporation
     Todd A. Reppert, President and CFO
     treppert@mainstcapital.com
     713-350-6000

     Dennard Rupp Gray and Easterly, LLC
     Ken Dennard
     ksdennard@drg-e.com / 713-529-6600
     Augustine Okwu
     gokwu@drg-e.com / 404-532-0086

SOURCE Main Street Capital Corporation

Released August 28, 2008