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        <title>Main Street Capital Corporation Annual report pursuant to Section 13 and 15(d)</title>
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            <h3>Annual report pursuant to Section 13 and 15(d)</h3>
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                                <a class="menu-item " href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/89">Financial Statements</a>
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                                <a class="menu-item " href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/96">Notes to Financial Statements</a>
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                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/96">ORGANIZATION AND BASIS OF PRESENTATION</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/97">SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/98">FAIR VALUE HIERARCHY FOR INVESTMENTS???PORTFOLIO COMPOSITION</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/99">EXTERNAL INVESTMENT MANAGER</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/100">DEBT</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/101">FINANCIAL HIGHLIGHTS</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/102">DIVIDENDS, DISTRIBUTIONS AND TAXABLE INCOME</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/103">COMMON STOCK</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/104">DIVIDEND REINVESTMENT PLAN</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/105">SHARE-BASED COMPENSATION</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/106">COMMITMENTS AND CONTINGENCIES</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/107">RELATED PARTY TRANSACTIONS</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/108">SUBSEQUENT EVENTS</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/109">Consolidated Schedule of Investments In and Advances to Affiliates</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/110">N-2</a></li>
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                                <a class="menu-item " href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/111">Accounting Policies</a>
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                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/111">SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)</a></li>
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                                <a class="menu-item " href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/112">Notes Tables</a>
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                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/112">SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/113">FAIR VALUE HIERARCHY FOR INVESTMENTS???PORTFOLIO COMPOSITION (Tables)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/114">EXTERNAL INVESTMENT MANAGER (Tables)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/115">DEBT (Tables)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/116">FINANCIAL HIGHLIGHTS (Tables)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/117">DIVIDENDS, DISTRIBUTIONS AND TAXABLE INCOME (Tables)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/118">DIVIDEND REINVESTMENT PLAN (Tables)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/119">SHARE-BASED COMPENSATION (Tables)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/120">COMMITMENTS AND CONTINGENCIES (Tables)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/121">Consolidated Schedule of Investments In and Advances to Affiliates (Tables)</a></li>
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                                <a class="menu-item current" href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/122">Notes Details</a>
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                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/122">SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/123">SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Investment Income (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/124">FAIR VALUE HIERARCHY FOR INVESTMENTS???PORTFOLIO COMPOSITION - Narrative (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/125">FAIR VALUE HIERARCHY FOR INVESTMENTS???PORTFOLIO COMPOSITION - Level??3 Portfolio Investments (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/126">FAIR VALUE HIERARCHY FOR INVESTMENTS???PORTFOLIO COMPOSITION - Changes in Fair Value of Level??3 Portfolio Investments (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/127">FAIR VALUE HIERARCHY FOR INVESTMENTS???PORTFOLIO COMPOSITION - Fair Value Hierarchy (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/128">FAIR VALUE HIERARCHY FOR INVESTMENTS???PORTFOLIO COMPOSITION - Summary of Investments (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/129">FAIR VALUE HIERARCHY FOR INVESTMENTS???PORTFOLIO COMPOSITION - Percentage of Portfolio Investments by Type of Investment (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/130">FAIR VALUE HIERARCHY FOR INVESTMENTS???PORTFOLIO COMPOSITION - Percentage of Portfolio Investments by Geographical Regions (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/131">FAIR VALUE HIERARCHY FOR INVESTMENTS???PORTFOLIO COMPOSITION - Percentage of Portfolio Investments by Industry Sector (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/132">EXTERNAL INVESTMENT MANAGER - Narrative (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/133">EXTERNAL INVESTMENT MANAGER - Balance Sheet (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/134">EXTERNAL INVESTMENT MANAGER - Statement of Operations (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/135">DEBT - Summary of Debt (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/136">DEBT - Summary of Interest Expense (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/137">DEBT - SBIC Debentures Narrative (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/138">DEBT - SBIC Debentures - Schedule of Maturities Dates and Fixed Interest Rates (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/139">DEBT - Corporate Facility (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/140">DEBT - SPV Facility Narrative (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/141">DEBT - SPV Facility Balance Sheet (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/142">DEBT - SPV Facility Statement of Operations (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/143">DEBT - Notes??Due (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/144">DEBT - Schedule of Contractual Payment Obligations (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/145">FINANCIAL HIGHLIGHTS (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/146">DIVIDENDS, DISTRIBUTIONS AND TAXABLE INCOME - Narrative (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/147">DIVIDENDS, DISTRIBUTIONS AND TAXABLE INCOME - Tax Distributions (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/148">DIVIDENDS, DISTRIBUTIONS AND TAXABLE INCOME - Reconciliation to Taxable Income and to Total Distributions Declared to Common Stockholders (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/149">DIVIDENDS, DISTRIBUTIONS AND TAXABLE INCOME - Provision for Income Taxes (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/150">DIVIDENDS, DISTRIBUTIONS AND TAXABLE INCOME - Deferred Tax Assets and Liabilities (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/151">COMMON STOCK (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/152">DIVIDEND REINVESTMENT PLAN (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/153">SHARE-BASED COMPENSATION - Narrative (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/154">SHARE-BASED COMPENSATION - Restricted Stock Authorized and Available for Issuance (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/155">SHARE-BASED COMPENSATION - Restricted Share Awards (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/156">COMMITMENTS AND CONTINGENCIES - Outstanding Commitments (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/157">COMMITMENTS AND CONTINGENCIES - Narrative (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/158">COMMITMENTS AND CONTINGENCIES - Operating Lease (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/159">RELATED PARTY TRANSACTIONS (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/160">SUBSEQUENT EVENTS (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/161">Consolidated Schedule of Investments In and Advances to Affiliates (Details)</a></li>
                                                                            <li><a href="/investors/sec-filings/all-sec-filings/xbrl_doc_only/162">Consolidated Schedule of Investments In and Advances to Affiliates Footnotes (Details)</a></li>
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                <h4>SUBSEQUENT EVENTS (Details)</h4>
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