Main Street Announces Dividend Increase

Main Street Capital Corporation MAIN ("Main Street") announced today that its Board of Directors declared monthly dividends of $0.15 per share for each of October, November and December 2012. These monthly dividends, which will be payable pursuant to the table below, equal a total of $0.45 per share for the fourth quarter of 2012. The fourth quarter 2012 dividends represent an 11.1% increase from the dividends declared for the fourth quarter of 2011 and a 3.4% increase compared to the third quarter of 2012. Including the dividends declared for the fourth quarter of 2012, Main Street will have paid $8.03 per share in cumulative dividends since its October 2007 initial public offering. When declaring dividends, the Main Street Board of Directors reviews estimates of taxable income available for distribution, which differs from consolidated income under generally accepted accounting principles due to (i) changes in unrealized appreciation and depreciation, (ii) temporary and permanent differences in income and expense recognition, (iii) activity at our taxable subsidiaries, and (iv) the amount of undistributed taxable income (or "spillover income") carried over from a given year for distribution in the following year. The final determination of 2012 taxable income, as well as the tax attributes for 2012 dividends, will be made after the close of the 2012 tax year. The final tax attributes for 2012 dividends are expected to include ordinary taxable income, capital gains and qualified dividends.