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        <title>Mustang Bio, Inc. Quarterly report pursuant to Section 13 or 15(d)</title>
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            <h3>Quarterly report pursuant to Section 13 or 15(d)</h3>
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                                <a class="menu-item " href="/sec-filings/quarterly-reports/xbrl_doc_only/1">Cover</a>
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                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1">Document and Entity Information</a></li>
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                                <a class="menu-item " href="/sec-filings/quarterly-reports/xbrl_doc_only/2">Financial Statements</a>
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                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/2">Condensed Balance Sheets</a></li>
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                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/9">License, Clinical Trial and Sponsored Research Agreements</a></li>
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                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/11">Property and Equipment</a></li>
                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/12">Commitments and Contingencies</a></li>
                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/13">Notes Payable</a></li>
                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/14">Leases</a></li>
                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/15">Stockholders&#039; Equity</a></li>
                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/16">Net Loss per Share</a></li>
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                                <a class="menu-item " href="/sec-filings/quarterly-reports/xbrl_doc_only/17">Accounting Policies</a>
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                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/20">Notes Payable (Tables)</a></li>
                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/21">Leases (Tables)</a></li>
                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/22">Stockholders&#039; Equity (Tables)</a></li>
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                                <a class="menu-item current" href="/sec-filings/quarterly-reports/xbrl_doc_only/24">Notes Details</a>
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                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/24">Organization, Description of Business and Liquidity and Capital Resources (Details)</a></li>
                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/25">Significant Accounting Policies (Details)</a></li>
                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/26">License, Clinical Trial and Sponsored Research Agreements - Licenses (Details)</a></li>
                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/27">License, Clinical Trial and Sponsored Research Agreements - Sponsored (Details)</a></li>
                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/28">Related Party Agreements (Details)</a></li>
                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/29">Property and Equipment (Details)</a></li>
                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/30">Property and Equipment - Additional Information (Details)</a></li>
                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/31">Notes Payable (Details)</a></li>
                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/32">Notes Payable - Additional Information (Details)</a></li>
                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/33">Leases (Details)</a></li>
                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/34">Leases - Cash flows (Details)</a></li>
                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/35">Leases - Maturities of operating leases (Details)</a></li>
                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/36">Leases - Future minimum lease payments (Details)</a></li>
                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/37">Leases - Additional Information (Details)</a></li>
                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/38">Stockholders&#039; Equity (Details)</a></li>
                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/39">Stockholders&#039; Equity - Stock Awards - Options (Details)</a></li>
                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/40">Stockholders&#039; Equity - Option activity and Unrecognized expense (Details)</a></li>
                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/41">Stockholders&#039; Equity - Restricted stock and RSUs (Details)</a></li>
                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/42">Stockholders&#039; Equity - Stock-based compensation expense (Details)</a></li>
                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/43">Stockholders&#039; Equity - Warrants (Details)</a></li>
                                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/44">Net Loss per Share (Details)</a></li>
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                <h4>Leases - Future minimum lease payments (Details)</h4>
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