Main Street Capital Prices $14M Share Offering

Main Street Capital Corporation (Nasdaq: MAIN - News; "Main Street") announced today that it has priced a public offering of 1,250,000 shares of its common stock in an underwritten public offering. Pricing was set at $12.10 per share, and net proceeds from the offering, after deducting underwriting discounts and estimated expenses payable by Main Street, are expected to be approximately $14.1 million. Main Street has also granted the underwriters an option, exercisable for 30 days, to purchase up to 187,500 additional shares of common stock to cover over-allotments, if any. Main Street intends to use the net proceeds from this offering to make investments in lower middle market companies in accordance with its investment objective and strategies, pay operating expenses and dividends to our stockholders, and for general corporate purposes. Pending the use of net proceeds from the offering for these purposes, Main Street may temporarily invest the net proceeds in certain idle funds investments, including secured intermediate term bank debt and high quality debt investments.

The underwriters of this offering are BB&T Capital Markets, a division of Scott and Stringfellow, LLC, Morgan Keegan & Company, Inc., SMH Capital, Inc., Janney Montgomery Scott LLC, and Ladenburg Thalmann & Co. Inc. The shares will be sold pursuant to an effective shelf registration statement on Form N-2 that has been filed with and has been declared effective by the U.S. Securities and Exchange Commission. The offering is subject to customary closing conditions and is expected to close on June 2, 2009.