Main Street Capital Announces Monthly Dividends for April, May and June 2009 of $0.125 Per Share

Confirms Projected Dividend Range of $1.50 to $1.65 Per Share for 2009

Main Street Capital Corporation (Nasdaq: MAIN - News; "Main Street") announced today that its Board of Directors declared monthly dividends of $0.125 per share for April, May and June 2009. These monthly dividends, which will be payable pursuant to the table below, equate to a total of $0.375 per share for the second quarter of 2009. The dividends declared for the second quarter of 2009 represent a 7.1% increase from the dividends per share paid in the second quarter of 2008. The dividends per share for the second quarter of 2009 also equate to an approximate annualized yield of 16.5% based on Main Street's current share price.

Summary of Second Quarter 2009 Monthly Dividends

    Declared    Ex-Dividend Date  Record Date Payment Date    Amount Per Share
  --------    ----------------  ----------- ------------    ----------------
    3/4/09         3/18/09        3/20/09      4/15/09           $0.125
    3/4/09         4/17/09        4/21/09      5/15/09           $0.125
    3/4/09         5/19/09        5/21/09      6/15/09           $0.125
                                                                 ------
                                Total for Second Quarter 2009:   $0.375

Main Street also confirmed its projected dividend range of $1.50 to $1.65 per share for calendar year 2009. The estimated range for total 2009 dividends was determined based upon projections of 2009 taxable income, anticipated 2009 portfolio activity, and the estimated amount of undistributed 2008 taxable income (or "spillover income") which will be utilized to pay dividends during 2009. Main Street will continue to provide quarterly updates to its 2009 dividend guidance based upon actual 2009 taxable income and portfolio activity.

Disclosure I am long Main shares