Main Street Capital Announces Fourth Quarter and Full Year 2009 Earnings Release and Conference Call Schedule

HOUSTON, March 1 /PRNewswire-FirstCall/ -- Main Street Capital Corporation (Nasdaq: MAIN) ("Main Street") today announced it will release fourth quarter and full year 2009 financial results on Tuesday, March 9, 2010, after the financial markets close. In conjunction with the fourth quarter and full year 2009 earnings release, Main Street has scheduled a conference call for Wednesday, March 10, 2010 at 10:00 a.m. Eastern Time.

What:  Main Street Capital Fourth Quarter and Full Year 2009 Earnings
       Conference Call

When:  Wednesday, March 10, 2010 – 10:00 a.m. Eastern Time

How:   Live via phone – By dialing 480-629-9774 or 800-762-8908 and quote
       conference ID

       #4244557 at least 10 minutes prior to the start time, or



       Via simultaneous webcast – By logging into the investor relations
       section of the

       company's web address below

Where: http://www.mainstcapital.com

A telephonic replay of the conference call will be available through Wednesday, March 17, 2010 and may be accessed by dialing 303-590-3030 and using the passcode ID #4244557. An audio archive will also be available on the investor relations section of the company's website at http://www.mainstcapital.com shortly after the call and will be accessible for approximately 90 days.

For more information, please contact Ben Burnham with DRG&E at 713-529-6600 or email bburnham@drg-e.com.

ABOUT MAIN STREET CAPITAL CORPORATION

Main Street (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 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 million 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 & Easterly, LLC

Ken Dennard | ksdennard@drg-e.com

Ben Burnham | bburnham@drg-e.com

713-529-6600

SOURCE Main Street Capital Corporation