Exhibit (l)(2)

[Letterhead of Sutherland Asbill & Brennan LLP]

August 17, 2010

Main Street Capital Corporation
1300 Post Oak Boulevard, Suite 800
Houston, TX 77056

Ladies and Gentlemen:

We have acted as counsel to Main Street Capital Corporation, a Maryland corporation (the “Company”), in connection with the registration statement on Form N-2 (File No. 333-1558056) (as amended as of the date hereof, the “Registration Statement”) filed by the Company with the Securities and Exchange Commission (the “Commission”) under the Securities Act of 1933, as amended (the “Securities Act”), previously declared effective by the Commission, relating to the public offering of securities of the Company that may be offered by the Company from time to time as set forth in the prospectus dated June 17, 2010, which was included in Post-Effective Amendment No. 5 to the Registration Statement, and which forms a part of the Registration Statement (the “Prospectus”), and as may be set forth from time to time in one or more supplements to the Prospectus. This opinion letter is rendered in connection with the public offering of 3,220,000 shares of common stock of the Company (the “Shares”), including 420,000 shares issuable by the Company to cover the underwriters’ over-allotment option, as described in the Prospectus and a prospectus supplement dated August 17, 2010 (the “Prospectus Supplement”). All of the Shares are to be sold by the Company as described in the Registration Statement and related Prospectus and Prospectus Supplement.

The Shares are to be sold by the Company pursuant to an underwriting agreement (the “Underwriting Agreement”), dated as of August 17, 2010, by and between the Company and Morgan Keegan & Company, Inc., which is being filed as Exhibit (h) to the Company’s Post-Effective Amendment No. 6 (the “Post-Effective Amendment”) to the Registration Statement, to be filed with the Commission on the date hereof.

As counsel to the Company, we have participated in the preparation of the Registration Statement, the Prospectus and the Prospectus Supplement and have examined the originals or copies, certified or otherwise identified to our satisfaction as being true copies of such records, documents or other instruments as we in our judgment have deemed to be necessary or appropriate to enable us to render the opinions hereinafter expressed including, without limitation, the following:

(i)	The Articles of Amendment and Restatement of the Company, certified as of the date hereof by an officer of the Company;

(ii)	The Amended and Restated Bylaws of the Company, certified as of the date hereof by an officer of the Company;

(iii)	A Certificate of Good Standing with respect to the Company issued by the State Department of Assessments and Taxation of the State of Maryland as of a recent date; and

(iv)	The resolutions of the board of directors of the Company relating to, among other things, (a) the authorization and approval of the preparation and filing of the Registration Statement, and (b) the authorization, issuance, offer and sale of the Shares pursuant to the Underwriting Agreement, the Registration Statement, the Prospectus and the Prospectus Supplement, certified as of the date hereof by an officer of the Company.

With respect to such examination and our opinions expressed herein, we have assumed, without any independent investigation or verification, (i) the genuineness of all signatures on all documents submitted to us for examination, (ii) the legal capacity of all natural persons, (iii) the authenticity of all documents submitted to us as originals, (iv) the conformity to original documents of all documents submitted to us as conformed or reproduced copies and the authenticity of the originals of such copied documents, and (v) that all certificates issued by public officials have been properly issued. We also have assumed without independent investigation or verification the accuracy and completeness of all corporate records made available to us by the Company.

Where factual matters material to this opinion letter were not independently established, we have relied with your approval upon certificates of public officials (which we have assumed remain accurate as of the date of this opinion), upon certificates and/or representations of officers and employees of the Company, upon such other certificates as we deemed appropriate, and upon such other data as we have deemed to be appropriate under the circumstances. Except as otherwise stated herein, we have undertaken no independent investigation or verification of factual matters. We have also made such examination of law as we have considered necessary for the purposes of the opinions hereinafter expressed.

This opinion letter is limited to the effect of the General Corporation Law of the State of Maryland, as in effect on the date hereof, and we express no opinion as to the applicability or effect of any other laws of such jurisdiction or the laws of any other jurisdictions. Without limiting the preceding sentence, we express no opinion as to any state securities or broker dealer laws or regulations thereunder relating to the offer, issuance and sale of the Shares.

On the basis of and subject to the foregoing, and in reliance thereon, and subject to the limitations and qualifications set forth in this opinion letter, we are of the opinion that the Shares have been duly authorized and, when issued and paid for in accordance with the terms of the Underwriting Agreement, the Shares will be validly issued, fully paid and nonassessable.

This opinion letter is limited to the matters expressly set forth herein, and no opinion may be implied or inferred beyond those expressly stated. This opinion is based upon currently

existing statutes, rules, regulations and judicial decisions, and we disclaim any obligation to advise you of any change in any of these sources of law or subsequent legal or factual developments which might affect any matters or opinions set forth herein.

We hereby consent to the filing of this opinion as an exhibit to the Post-Effective Amendment and to the reference our firm in the “Legal Matters” section in the Prospectus Supplement. We do not admit by giving this consent that we are in the category of persons whose consent is required under Section 7 of the Securities Act.

	Very truly yours,

	/s/ Sutherland Asbill & Brennan LLP