SEC Contract Filing

Filing Date: 2023-10-05

Document Content:
<DOCUMENT>
<TYPE>EX-10.7(3)
<SEQUENCE>8
<FILENAME>tm2327139d1_ex10d7-3.htm
<DESCRIPTION>EXHIBIT 10.7.3
<TEXT>
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<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="text-align: right; margin: 0"><B>Exhibit 10.7.3</B></P>

<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B><U>THIRD AMENDED AND RESTATED</U></B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B><U>SPONSOR SUPPORT AND LOCKUP AGREEMENT</U></B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">This Third Amended and Restated
Sponsor Support and Lockup Agreement (this &ldquo;<U>Agreement</U>&rdquo;), dated as of September&nbsp;29, 2023, is made and entered into
by and among Graf Acquisition Partners IV LLC, a Delaware limited liability company (the &ldquo;<U>Graf Sponsor</U>&rdquo;), Graf Acquisition
Corp. IV, a Delaware corporation (&ldquo;<U>Acquiror</U>&rdquo;), NKGen Biotech,&nbsp;Inc., a Delaware corporation (the &ldquo;<U>Company</U>&rdquo;)
and solely with respect to <U>Section&nbsp;1.4</U>, <U>Section&nbsp;1.5</U>, <U>Section&nbsp;1.6</U>, <U>Section&nbsp;1.7</U>, <U>Section&nbsp;1.8</U>,
<U>Section&nbsp;1.9</U>, <U>Section&nbsp;1.10</U>, <U>ARTICLE&nbsp;II</U> and <U>ARTICLE&nbsp;III</U>, the Persons set forth on <U>Schedule
I</U> hereto (each, an &ldquo;<U>Insider</U>&rdquo; and, together with the Graf Sponsor, the &ldquo;<U>Insiders</U>&rdquo;). Acquiror,
the Insiders and the Company are sometimes collectively referred to herein as the &ldquo;<U>Parties</U>,&rdquo; and each of them is sometimes
individually referred to herein as a &ldquo;<U>Party</U>&rdquo;. This Agreement amends and restates the Second Amended and Restated Sponsor
Support and Lockup Agreement, dated as of September&nbsp;28, 2023, entered into among the parties hereto. Unless otherwise defined in
<U>Section&nbsp;3.1</U>, capitalized terms used herein and not otherwise defined, shall have the meanings ascribed to such terms in the
Merger Agreement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>RECITALS</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">WHEREAS, as of the date hereof,
the Insiders collectively are the holders of record and the beneficial owners (within the meaning of Rule&nbsp;13d-3 promulgated under
the Exchange Act) of, in the aggregate, (i)&nbsp;4,290,375 shares of common stock, par value $0.0001 per share, of Acquiror, which were
purchased by the Graf Sponsor in a private placement prior to the Acquiror&rsquo;s initial public offering (including 80,000 of such shares
transferred by Graf Sponsor to the other Insiders listed on <U>Schedule 1</U> (the &ldquo;<U>Founder Shares</U>&rdquo;), 6,800 Acquiror
Units (which shall constitute Covered Securities), and (iii)&nbsp;4,721,533 Private Placement Warrants (such Private Placement Warrants
constituting all of the total Private Placement Warrants outstanding), in each case, in the names and denominations as listed on <U>Schedule
I </U>hereto, and in accordance with <U>Section&nbsp;2.4(b)</U>&nbsp;(the Founder Shares, Covered Securities and such Private Placement
Warrants, collectively, the &ldquo;<U>Owned Securities</U>&rdquo;);</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">WHEREAS, Acquiror, Austria
Merger Sub,&nbsp;Inc., a Delaware corporation and a direct wholly owned subsidiary of Acquiror (&ldquo;<U>Merger Sub</U>&rdquo;) and the
Company have entered into an Agreement and Plan of Merger, dated as of April&nbsp;14, 2023 (as amended, restated, supplemented or otherwise
modified from time to time, the &ldquo;<U>Merger Agreement</U>&rdquo;), pursuant to which, among other things, at the Effective Time,
Merger Sub will merge with and into the Company, with the Company continuing as the surviving corporation in the Merger and as a wholly
owned Subsidiary of Acquiror; and</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">WHEREAS, as an inducement
to Acquiror, Merger Sub and the Company to enter into the Merger Agreement and to consummate the transactions contemplated thereby, the
Parties desire to agree to certain matters as set forth herein.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>AGREEMENT</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">NOW, THEREFORE, in consideration
of the foregoing and the representations, warranties, covenants and agreements set forth herein, the Parties, intending to be legally
bound, hereby agree as follows:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>ARTICLE&nbsp;I</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B><U>COVENANTS AND AGREEMENTS</U></B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</