X0303 4 2011-01-14 0 0001396440 Main Street Capital CORP MAIN 0001437113 Beauvais Jason B 1300 POST OAK BLVD. STE. 800 HOUSTON TX 77056 0 1 0 0 VP, General Counsel, Secretary Common Stock 2011-01-14 5 J 0 E 26.389 18.95 A 19844.062 D Common Stock 2011-02-15 5 J 0 E 25.881 19.45 A 19869.943 D Common Stock 2011-03-15 5 J 0 E 26.128 19.39 A 19896.071 D Common Stock 2011-04-15 5 J 0 E 28.847 18.3822 A 19924.918 D Common Stock 2011-05-16 5 J 0 E 29.192 18.2934 A 19954.11 D Common Stock 2011-06-20 4 A 0 6280 0.00 A 26234.11 D The reporting person acquired these shares under a dividend reinvestment plan, pursuant to a dividend reinvestment transaction exempt from Section 16 under Rule 16a-11. Shares issued under the Main Street Capital Corporation 2008 Equity Incentive Plan. /s/ Rodger A. Stout as Attorney-in-Fact for Jason B. Beauvais 2011-06-22