<!--Enhanced HTML document created with Toppan Merrill Bridge  9.11.0.85--><!--Created on: 7/15/2021 11:03:56 AM (UTC)--><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta charset="UTF-8"><title></title></head><body><div style="margin-top:30pt;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><font style="font-size:12pt;visibility:hidden;">&#8203;</font></p></div><div style="clear:both;max-width:100%;position:relative;"><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;padding-bottom:1pt;text-align:center;border-bottom:3px double #000000;margin:0pt;"><font style="font-size:1pt;font-weight:bold;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;text-align:center;margin:4pt 0pt 0pt 0pt;"><b style="font-size:14pt;font-weight:bold;">UNITED STATES</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;text-align:center;margin:0pt;"><b style="font-size:14pt;font-weight:bold;">SECURITIES AND EXCHANGE COMMISSION</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:10pt 0pt 0pt 0pt;"><b style="font-weight:bold;">Washington, D.C. 20549</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;text-align:center;border-bottom:1px solid #000000;margin:0pt 216pt 0pt 216pt;"><font style="font-size:10pt;margin-bottom:12pt;margin-left:0pt;margin-right:0pt;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;text-align:center;margin:10pt 0pt 0pt 0pt;"><b style="font-size:14pt;font-weight:bold;">FORM 8-K</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;text-align:center;border-bottom:1px solid #000000;margin:0pt 216pt 0pt 216pt;"><font style="font-size:10pt;margin-bottom:12pt;margin-left:0pt;margin-right:0pt;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:10pt 0pt 0pt 0pt;"><b style="font-weight:bold;">CURRENT REPORT</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:10pt 0pt 0pt 0pt;"><b style="font-weight:bold;">Pursuant to Section&#160;13 OR 15(d) of</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">The Securities Exchange Act of 1934</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:10pt 0pt 0pt 0pt;">Date of Report (Date of earliest event reported)&#160;<b style="font-weight:bold;">July 15, 2021</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;text-align:center;border-bottom:1px solid #000000;margin:0pt 216pt 0pt 216pt;"><font style="font-size:10pt;margin-bottom:12pt;margin-left:0pt;margin-right:0pt;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;text-align:center;margin:10pt 0pt 0pt 0pt;"><b style="font-size:16pt;font-weight:bold;">Main Street Capital Corporation</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:9pt;text-align:center;margin:0pt;">(Exact name of registrant as specified in its charter)</p><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;text-align:center;margin:0pt;"><font style="font-size:10pt;visibility:hidden;">&#8203;</font></p><div><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;" align="center"><tr><td style="vertical-align:top;width:32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Maryland</b></p></td><td style="vertical-align:top;width:3%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;margin:0pt;">&#160;</p></td><td style="vertical-align:top;width:32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">001-33723</b></p></td><td style="vertical-align:top;width:3%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;margin:0pt;">&#160;</p></td><td style="vertical-align:top;width:30%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">41-2230745</b></p></td></tr><tr><td style="vertical-align:top;width:32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;">(State or other jurisdiction<br>of incorporation)</p></td><td style="vertical-align:top;width:3%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;margin:0pt;">&#160;</p></td><td style="vertical-align:top;width:32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;">(Commission File Number)</p></td><td style="vertical-align:top;width:3%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;margin:0pt;">&#160;</p></td><td style="vertical-align:top;width:30%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;">(IRS Employer Identification No.)</p></td></tr></table></div><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;margin:0pt;"><font style="font-size:10pt;visibility:hidden;">&#8203;</font></p><div><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;" align="center"><tr><td style="vertical-align:top;width:21.68%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;text-align:center;margin:0pt;"><font style="font-size:10pt;font-weight:bold;visibility:hidden;">&#8203;</font></p></td><td style="vertical-align:top;width:42.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">1300 Post Oak Boulevard, 8</b><sup style="font-size:7.5pt;font-weight:bold;vertical-align:top;">th</sup><b style="font-weight:bold;"> Floor, Houston, Texas</b></p></td><td style="vertical-align:top;width:24.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">77056</b></p></td><td style="vertical-align:top;width:12.03%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;text-align:center;margin:0pt;"><font style="font-size:10pt;font-weight:bold;visibility:hidden;">&#8203;</font></p></td></tr><tr><td style="vertical-align:top;width:21.68%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;text-align:center;margin:0pt;"><font style="font-size:10pt;visibility:hidden;">&#8203;</font></p></td><td style="vertical-align:top;width:42.16%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;">(Address of principal executive offices)</p></td><td style="vertical-align:top;width:24.11%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;">(Zip Code)</p></td><td style="vertical-align:top;width:12.03%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;text-align:center;margin:0pt;"><font style="font-size:10pt;visibility:hidden;">&#8203;</font></p></td></tr></table></div><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:10pt 0pt 0pt 0pt;">Registrant&#39;s telephone number, including area code: &#160;&#160;<b style="font-weight:bold;">713-350-6000</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:10pt 0pt 0pt 0pt;">Not Applicable</p><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;text-align:center;border-bottom:1px solid #000000;margin:0pt 75pt 0pt 75pt;"><font style="font-size:10pt;margin-bottom:12pt;margin-left:0pt;margin-right:0pt;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;">(Former name or former address, if changed since last report)</p><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;margin:0pt;"><font style="font-size:10pt;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:</p><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;margin:0pt;"><font style="font-size:10pt;visibility:hidden;">&#8203;</font></p><div><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;width:100%;" align="center"><tr><td style="vertical-align:top;width:4%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><font style="font-family:'Segoe UI Symbol';">&#9744;</font></p></td><td style="vertical-align:top;width:96%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</p></td></tr><tr><td style="vertical-align:top;width:4%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><font style="font-family:'Segoe UI Symbol';">&#9744;</font></p></td><td style="vertical-align:top;width:96%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</p></td></tr><tr><td style="vertical-align:top;width:4%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><font style="font-family:'Segoe UI Symbol';">&#9744;</font></p></td><td style="vertical-align:top;width:96%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</p></td></tr><tr><td style="vertical-align:top;width:4%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><font style="font-family:'Segoe UI Symbol';">&#9744;</font></p></td><td style="vertical-align:top;width:96%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</p></td></tr></table></div><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;margin:0pt;"><font style="font-size:10pt;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Securities registered pursuant to Section 12(b) of the Act:</p><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;margin:0pt;"><font style="font-size:10pt;visibility:hidden;">&#8203;</font></p><div><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;" align="center"><tr><td style="vertical-align:bottom;width:34.35%;margin:0pt;padding:1.5pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;"><b style="font-weight:bold;text-decoration:underline;text-decoration-color:#000000;">Title of each class</b></p></td><td style="vertical-align:bottom;width:16.82%;margin:0pt;padding:1.5pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;"><b style="font-weight:bold;text-decoration:underline;text-decoration-color:#000000;">Trading Symbol</b></p></td><td style="vertical-align:bottom;width:48.82%;margin:0pt;padding:1.5pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;"><b style="font-weight:bold;text-decoration:underline;text-decoration-color:#000000;">Name of each exchange on which registered</b></p></td></tr><tr style="height:20.25pt;"><td style="vertical-align:bottom;width:34.35%;margin:0pt;padding:1.5pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;">Common Stock, par value $0.01 per share</p></td><td style="vertical-align:bottom;width:16.82%;margin:0pt;padding:1.5pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;">MAIN</p></td><td style="vertical-align:bottom;width:48.82%;margin:0pt;padding:1.5pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;">New York Stock Exchange</p></td></tr></table></div><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;margin:0pt;"><font style="font-size:10pt;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (&#167;230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (&#167;240.12b-2 of this chapter).</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:10pt 0pt 0pt 0pt;">Emerging growth company <font style="font-family:'Segoe UI Symbol';">&#9744;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:10pt 0pt 0pt 0pt;">If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. <font style="font-family:'Segoe UI Symbol';">&#9744;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;padding-bottom:1pt;border-bottom:3px double #000000;margin:0pt;"><font style="font-size:4pt;visibility:hidden;">&#8203;</font></p></div></div><hr style="background-color:#000000;clear:both;color:#000000;height:2pt;line-height:0;margin-bottom:30pt;margin-left:5.88%;margin-right:5.88%;margin-top:30pt;page-break-after:always;width:88.24%;border-width:0;"><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><font style="font-size:12pt;visibility:hidden;">&#8203;</font></p></div><div style="clear:both;max-width:100%;position:relative;"><table border="0" cellpadding="0" cellspacing="0"><tr><td style="vertical-align:text-top;white-space:nowrap;width:72pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;margin-bottom:0pt;margin-top:0pt;"><b style="font-weight:bold;">Item 2.02. </b></p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;margin-bottom:0pt;margin-top:0pt;"><b style="font-weight:bold;">Results of Operations and Financial Condition.</b></p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:12pt 0pt 0pt 0pt;">On July 15, 2021, the Registrant issued a press release. A copy of such press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:12pt 0pt 0pt 0pt;">The information disclosed under this Item 2.02, including Exhibit 99.1 hereto, is being furnished and shall not be deemed &quot;filed&quot; for purposes of Section 18 of the Securities Exchange Act of 1934 and shall not be deemed incorporated by reference into any filing made under the Securities Act of 1933, except as expressly set forth by specific reference in such filing.</p><table border="0" cellpadding="0" cellspacing="0"><tr><td style="vertical-align:text-top;white-space:nowrap;width:72pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;margin-bottom:0pt;margin-top:12pt;"><b style="font-weight:bold;">Item 9.01. </b></p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;margin-bottom:0pt;margin-top:12pt;"><b style="font-weight:bold;">Financial Statements and Exhibits.</b></p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><div><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;width:100%;" align="center"><tr style="height:1pt;"><td style="vertical-align:top;width:15%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="position:absolute;top:0pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;margin:0pt;"><font style="font-size:1pt;visibility:hidden;">&#8203;</font></p></div></div></td><td style="vertical-align:top;width:85%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="position:absolute;top:0pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;margin:0pt;"><font style="font-size:1pt;visibility:hidden;">&#8203;</font></p></div></div></td></tr><tr><td style="vertical-align:top;width:15%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;margin:0pt;"><a style="-sec-extract:exhibit;color:#0070c0;" href="main-20210715xex99d1.htm"><font style="color:#0070c0;font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;text-align:left;">Exhibit 99.1.</font></a></p></td><td style="vertical-align:top;width:85%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;margin:0pt;"><a style="-sec-extract:exhibit;color:#0070c0;" href="main-20210715xex99d1.htm"><font style="color:#0070c0;font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;text-align:left;">Press release dated July 15, 2021</font></a></p></td></tr><tr><td style="vertical-align:top;width:15%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;margin:6pt 0pt 0pt 0pt;"><font style="font-size:10pt;visibility:hidden;">&#8203;</font></p></td><td style="vertical-align:top;width:85%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;margin:6pt 0pt 0pt 0pt;"><font style="font-size:10pt;visibility:hidden;">&#8203;</font></p></td></tr></table></div><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p></div></div><hr style="background-color:#000000;clear:both;color:#000000;height:2pt;line-height:0;margin-bottom:30pt;margin-left:5.88%;margin-right:5.88%;margin-top:30pt;page-break-after:always;width:88.24%;border-width:0;"><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><font style="font-size:12pt;visibility:hidden;">&#8203;</font></p></div><div style="clear:both;max-width:100%;position:relative;"><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">SIGNATURE</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:12pt 0pt 0pt 0pt;">&#160;&#160;&#160;&#160;Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.</p><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><div><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;" align="center"><tr><td style="vertical-align:top;width:47.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;margin:0pt;">&#160;</p></td><td style="vertical-align:top;width:5.04%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;margin:0pt;">&#160;</p></td><td style="vertical-align:top;width:47.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Main Street Capital Corporation</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;padding-bottom:1pt;text-align:center;border-bottom:1px solid #000000;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt 0pt 12pt 0pt;">(Registrant)</p></td></tr><tr><td style="vertical-align:top;width:47.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">July 15, 2021</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;padding-bottom:1pt;text-align:center;border-bottom:1px solid #000000;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;">(Date)</p></td><td style="vertical-align:top;width:5.04%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;margin:0pt;">&#160;</p></td><td style="vertical-align:top;width:47.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">/s/ &#160; Jason B. Beauvais</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;padding-bottom:1pt;text-align:center;border-bottom:1px solid #000000;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;">Jason B. Beauvais&#160;</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;"><i style="font-style:italic;">General Counsel</i></p></td></tr></table></div><p style="font-family:'Times New Roman','Times','serif';font-size:12pt;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p></div></div><hr style="background-color:#000000;clear:both;color:#000000;height:2pt;line-height:0;margin-left:5.88%;margin-right:5.88%;margin-top:30pt;page-break-after:avoid;width:88.24%;border-width:0;"></body></html>
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{"company-data": {"conformed-name": "Main Street Capital CORP", "cik": "0001396440", "irs-number": "412230745", "state-of-incorporation": "MD", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "814-00746", "film-number": "211091670"}, "business-address": {"street1": "1300 POST OAK BOULEVARD", "street2": "SUITE 800", "city": "HOUSTON", "state": "TX", "zip": "77056", "phone": "(713) 350-6000"}, "mail-address": {"street1": "1300 POST OAK BOULEVARD", "street2": "SUITE 800", "city": "HOUSTON", "state": "TX", "zip": "77056"}}
​
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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
​
FORM 8-K
​
CURRENT REPORT
Pursuant to Section 13 OR 15(d) of
The Securities Exchange Act of 1934
Date of Report (Date of earliest event reported)
July 15, 2021
​
Main Street Capital Corporation
(Exact name of registrant as specified in its charter)
​
Maryland
001-33723
41-2230745
(State or other jurisdiction
of incorporation)
(Commission File Number)
(IRS Employer Identification No.)
​
​
1300 Post Oak Boulevard, 8
th
Floor, Houston, Texas
77056
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​
(Address of principal executive offices)
(Zip Code)
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Registrant's telephone number, including area code:
713-350-6000
Not Applicable
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(Former name or former address, if changed since last report)
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Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
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☐
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
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Securities registered pursuant to Section 12(b) of the Act:
​
Title of each class
Trading Symbol
Name of each exchange on which registered
Common Stock, par value $0.01 per share
MAIN
New York Stock Exchange
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Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
Emerging growth company
☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.
☐
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Item 2.02.
Results of Operations and Financial Condition.
On July 15, 2021, the Registrant issued a press release. A copy of such press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference.
The information disclosed under this Item 2.02, including Exhibit 99.1 hereto, is being furnished and shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934 and shall not be deemed incorporated by reference into any filing made under the Securities Act of 1933, except as expressly set forth by specific reference in such filing.
Item 9.01.
Financial Statements and Exhibits.
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Exhibit 99.1.
Press release dated July 15, 2021
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SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
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Main Street Capital Corporation
​
(Registrant)
July 15, 2021
​
(Date)
/s/   Jason B. Beauvais
​
Jason B. Beauvais
General Counsel
​