Item 1.01 Entry into a Material Definitive Agreement.





Merger Agreement


On April 14, 2023, Graf Acquisition Corp. IV, a Delaware corporation ("Graf"), entered into an Agreement and Plan of Merger (the "Merger Agreement"), with Austria Merger Sub, Inc., a Delaware corporation and a direct wholly-owned subsidiary of Graf ("Merger Sub"), and NKGen Biotech, Inc., a Delaware corporation ("NKGen"), pursuant to which, subject to the satisfaction or waiver of certain conditions set forth therein, Merger Sub will merge with and into NKGen (the "Merger"), with NKGen surviving the Merger in accordance with the Delaware General Corporation Law as a wholly-owned subsidiary of Graf (the Merger, together with the other transactions contemplated by the Merger Agreement and the related ancillary agreements, the "Business Combination"). The Business Combination is subject to certain closing conditions as summarized below under "Conditions to Closing." Immediately prior to the closing of the Business Combination (the "Closing" and the date on which the Closing occurs, the "Closing Date"), Graf will change its name to "NKGen Biotech, Inc." and NKGen will change its name to "NKGen Operating Biotech, Inc." References herein to "New NKGen" denote Graf as the post-Business Combination entity.

NKGen is a clinical-stage biotechnology company focused on the development and commercialization of innovative autologous, allogeneic and CAR-NK Natural Killer cell therapeutics. NKGen is based in Santa Ana, CA, and has been funded since its inception in 2017 primarily by its majority stockholder, NKMAX Co., Ltd. ("NKMAX"), a public company based in the Republic of Korea.

The board of directors of Graf (the "Graf Board") has unanimously approved and declared advisable the Merger Agreement and the Business Combination and resolved to recommend approval of the Merger Agreement and related matters by Graf's stockholders.





Merger Consideration



In accordance with the terms and subject to the conditions of the Merger Agreement, Graf has agreed to issue to the equityholders of NKGen (other than holders of unvested NKGen options to purchase shares of common stock of NKGen ("NKGen options") as of immediately prior to the Effective Time) aggregate consideration (the "Merger Consideration") of a number of shares of newly issued common stock, par value $0.0001 per share, of New NKGen ("Common Stock"), valued at $10.00 per share, equal to the product of the number of outstanding shares of common stock of NKGen ("NKGen common stock") at the Closing, multiplied by the Exchange Ratio. The "Exchange Ratio" is equal to the quotient of (A) the sum of (i) $145 million plus (ii) the aggregate amount of principal and accrued interest underlying convertible promissory notes of NKGen ("NKGen convertible notes") that are converted into shares of NKGen common stock as of immediately prior to the effective time of the Merger (the "Effective Time"), divided by (B) $10.00, divided by (C) the number of Fully Diluted Shares of NKGen common stock immediately prior to the Effective Time. "Fully Diluted Shares" means, without duplication, the sum of (A) the aggregate number of shares of NKGen common stock outstanding as of immediately prior to the Effective Time, including shares of NKGen common stock issued as a result of the conversion of NKGen convertible notes into NKGen common stock as of immediately prior to the Effective Time, other than shares of NKGen common stock held in the treasury of NKGen, plus (B) to the extent not included in clause (A), shares of NKGen common stock underlying or issuable upon conversion of NKGen convertible notes, plus (C) the aggregate number of shares of NKGen common stock subject to vested NKGen options outstanding as of immediately prior to the Effective Time, plus (D) to the extent not included in the foregoing clauses (A) through (C), and to the extent (i) such shares of NKGen common stock are not subject to unvested NKGen options and (ii) are not Backstop Shares (as defined below) or shares that are subject to or issuable pursuant to the PIPE Financing Amount (as defined below), the aggregate number of shares of NKGen common stock subject to any other securities issued by NKGen that are converted or exercisable into, or exchangeable for, directly or indirectly, NKGen common stock or Common Stock, if any. Prior to the Closing, NKGen will use its commercially reasonable efforts to cause each NKGen convertible note to be converted into shares of NKGen common stock pursuant to its terms as of immediately prior to the Effective Time.

At the Effective Time, each outstanding and unexercised NKGen option will be cancelled and converted into an option to acquire Common Stock ("New NKGen Options"), provided that: (i) each such New NKGen Option shall be exercisable for that number of shares of Common Stock equal to the product (rounded down to the nearest whole number) of (A) the number of shares of NKGen common stock subject to such NKGen Option immediately prior the Effective Time multiplied by (B) the Exchange Ratio, and (ii) the per share exercise price for each share of Common Stock issuable upon exercise of the New NKGen Option shall be equal to the quotient (rounded up to the nearest whole cent) obtained by dividing (A) the exercise price per share of each NKGen Option immediately prior to the Effective Time by (B) the Exchange Ratio.





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Conditions to Closing


The obligation of Graf and NKGen to consummate the Business Combination pursuant to the Merger Agreement is subject to the satisfaction or waiver of certain closing conditions, including, among others: (i) the absence of any governmental order, statute, rule or regulation enjoining or prohibiting the consummation of the Merger, (ii) approval by Graf's stockholders and NKGen's stockholders of the Merger Agreement, the Business Combination and certain other actions related thereto, (iii) that Graf has not received valid redemption requests (that have not subsequently been withdrawn) from holders of the Common Stock initially issued as part of the units sold by Graf in its initial public offering (the "public shares") in an amount that would cause Graf not to have at least $5,000,001 of net tangible assets (as determined in accordance with Rule 3a51-1(g)(1) of the Securities Exchange Act of 1934, as amended (the "Exchange Act")), (iv) effectiveness of the Registration Statement on Form S-4 (the "Registration Statement") to be filed by Graf in connection with the Business Combination, and the absence of any stop order suspending the effectiveness of the Registration Statement and no proceedings for that purpose are outstanding or threatened by the SEC and not withdrawn, (v) the shares of Common Stock to be issued in connection with the Business Combination having been approved for listing on the New York Stock Exchange (the "NYSE"), NYSE American or Nasdaq Stock Market ("Nasdaq"), as mutually determined by Graf and NKGen, subject only to official notice of issuance thereof, (vi) Graf has obtained its stockholder approval to extend the date by which Graf must consummate an initial business combination to September 29, 2023 (the "First Extension") and if the Business . . .

Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On April 13, 2023, Sterling Cross, Graf's Chief Financial Officer, notified Graf of his intention to resign from his position, effective April 14, 2023. Mr. Cross did not advise Graf of any disagreement he had with Graf on any matter relating to its operations, policies, or practices. Graf will announce a new Chief Financial Officer in due course.

Item 7.01 Regulation FD Disclosure.

On April 14, 2023, Graf and NKGen issued a joint press release (the "Press Release") announcing the execution of the Merger Agreement. The Press Release is attached hereto as Exhibit 99.1 and incorporated by reference herein.





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The information in this Item 7.01, including Exhibit 99.1, is furnished and shall not be deemed "filed" for purposes of Section 18 of the Exchange Act, or otherwise subject to liabilities under that section, and shall not be deemed to be incorporated by reference into the filings of Graf under the Securities Act or the Exchange Act, regardless of any general incorporation language in such filings. This Current Report on Form 8-K (this "Current Report") will not be deemed an admission as to the materiality of any information of the information contained in this Item 7.01, including Exhibit 99.1.

Additional Information and Where to Find It

Graf has filed a preliminary proxy statement with the Securities and Exchange Commission (the "SEC") and intends to file a definitive proxy statement, when available, with the SEC, to be used at its special meeting (the "Special Meeting") of stockholders to approve the First Extension. Graf's stockholders and other interested persons are advised to read, when the preliminary proxy statement and, when available, the definitive proxy statement relating to the First Extension, as these materials will contain important information about the First Extension, NKGen, Graf and the Business Combination. The definitive proxy statement and other relevant materials for the First Extension will be mailed to stockholders of Graf as of a record date to be established for voting on the First Extension.

In addition, if the First Extension is approved at the Special Meeting, Graf intends to file the Registration Statement with the SEC that will include a proxy statement/prospectus, that will be both the proxy statement to be distributed to holders of Graf's common stock in connection with its solicitation of proxies for the vote by Graf's stockholders with respect to the proposed Business Combination and other matters as may be described in the Registration Statement, as well as the prospectus relating to the offer and sale of the securities to be issued in the proposed Business Combination. After the Registration Statement is declared effective, Graf will mail a definitive proxy statement/prospectus and other relevant documents to its stockholders as of a record date to be established for voting on the proposed Business Combination. The Registration Statement, including the proxy statement/prospectus contained therein, when it is declared effective by the SEC, will contain important information about the proposed Business Combination and the other matters to be voted upon at a meeting of Graf's stockholders to be held to approve the proposed Business Combination and other matters. Graf may also file other documents with the SEC regarding the proposed Business Combination. Graf stockholders and other interested persons are advised to read, when available, the preliminary proxy statement/prospectus included in the Registration Statement, as well as any amendments or supplements thereto, and the definitive proxy statement/prospectus and other documents filed in connection with the Business Combination, as these documents will contain important information about Graf, NKGen, and the proposed Business Combination.

Graf's stockholders may obtain copies of the aforementioned documents and other documents filed by Graf with the SEC, without charge, once available, at the SEC's web site at www.sec.gov, or by directing a request to: Graf Acquisition Corp. IV, 1790 Hughes Landing Blvd., Suite 400, The Woodlands, Texas 77380, Attention: Anthony A. Kuznik, EVP & General Counsel.

Participants in Solicitation

Graf and its directors and executive officers may be deemed to be participants in the solicitation of proxies from Graf's stockholders with respect to the First Extension. Information regarding the names of Graf's directors and officers and their interests in Graf is contained in the Annual Report on Form 10-K for the year ended December 31, 2022, filed by Graf with the SEC on March 31, 2023 (the "2022 Form 10-K"). In addition, information regarding the persons who may be deemed participants in the solicitation of proxies from Graf's stockholders in connection with the First Extension is contained in the preliminary proxy statement and, when available, the definitive proxy statement relating to the First Extension, which are or will be filed with the SEC.

In addition, Graf, NKGen and their respective directors, executive officers and other members of management and employees may be deemed participants in the solicitation of proxies from Graf's stockholders with respect to the Business Combination. Information regarding the interests of those participants and other persons who may be deemed participants in the solicitation of proxies from Graf's stockholders in connection with the Business Combination and a description of their direct and indirect interests, by security holdings or otherwise, will be contained in the proxy statement/prospectus included in the Registration Statement and other relevant documents to be filed with the SEC regarding the Business Combination when they become available.

Investors and security holders of Graf and NKGen are urged to carefully read the aforementioned documents and other relevant documents that Graf will file with the SEC in connection with the First Extension and the Business Combination, when they become available, because they will contain important information about the First Extension and the proposed Business Combination. You may obtain free copies of these documents as indicated above.





No Offer or Solicitation


This Current Report shall not constitute a solicitation of a proxy, consent or authorization with respect to any securities or in respect of the proposed Business Combination. This Current Report shall also not constitute an offer to sell or the solicitation of an offer to buy any securities, or a solicitation of any vote or approval, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offering of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act.





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Forward-Looking Statements


Certain statements included in this Current Report that are not historical facts are forward looking statementsfor purposes of the safe harbor provisions under the United States Private Securities Litigation Reform Act of 1995. Forward-looking statements generally are accompanied by words such as "believe," "may," "will," "estimate," "continue," "anticipate," "intend," "expect," "should," "would," "plan," "predict," "potential," "seem," "seek," "future," "outlook," "project," and similar expressions that predict or indicate future events or trends or that are not statements of historical matters. Forward-looking statements include statements relating to proposed the Business Combination between Graf and NKGen, the Extensions, NKGen's or Graf's ability to consummate the proposed Business Combination, the benefits of the proposed Business Combination, estimated proceeds from the Business Combination, expectations regarding NKGen's business development, as well as the NKGen's future operations, including corporate governance and management plans. These statements are based on various assumptions, whether or not identified in this Current Report or the exhibits hereto, and on the current expectations of the respective management of NKGen and Graf and are not predictions of actual performance. These forward-looking statements are provided for illustrative purposes only and are not intended to serve as, and must not be relied on by an investor as, a guarantee, an assurance, a prediction or a definitive statement of fact or probability. Actual events and circumstances are difficult or impossible to predict and will differ from assumptions. Many actual events and circumstances are beyond the control of NKGen and Graf. These forward-looking statements are subject to a number of risks and uncertainties, including the inability of the parties to successfully or timely consummate the Business Combination; the failure to obtain the Extensions; the failure to satisfy the conditions to the consummation of the Business Combination, including the approval of the Merger Agreement by Graf's stockholders, the satisfaction of the minimum cash condition and the receipt of certain governmental and regulatory approvals; the inability to obtain any PIPE investments; the effect of the announcement or pendency of the Business Combination on NKGen's business relationships, operating results, and business generally; the risk that the proposed Business Combination disrupts the current plans and operations of NKGen; the risk that regulatory approvals for NKGen's product development are not obtained, are delayed or are subject to unanticipated conditions that could adversely affect New NKGen or the expected benefits of the Business Combination; NKGen's ability to manage future growth; NKGen's ability to manage clinical trials or studies, including any compassionate use programs and develop product pipeline; the dependence on the success of NKGen's SNK natural killer cell technology platform; New NKGen's ability to meet the listing standards of the NYSE, NYSE American or, Nasdaq; the amount of redemption requests made by Graf's public stockholders; the ability of New NKGen to obtain additional financing required for operations and growth in the future; the outcome of any potential litigation, government and regulatory proceedings, investigations and inquiries; the complexity of numerous regulatory and legal requirements that NKGen needs to comply with to operate its business; the failure to obtain, adequately protect, maintain or enforce NKGen's intellectual property rights; the ability of Graf or New NKGen to issue equity or equity-linked securities in connection with the proposed Business Combination or in the future; the costs associated with New NKGen operating as a public company; the lack of active trading market for New NKGen's common stock; the concentrated ownership of New NKGen common stock among NKGen's existing executive officers, directors and principal stockholders; and those factors discussed in the 2022 Form 10-K under the heading "Risk Factors," . . .

Item 9.01. Financial Statements and Exhibits.





(d) Exhibits.



Exhibit No.   Description
  2.1†          Agreement and Plan of Merger, dated as of April 14, 2023, by and
              among Graf Acquisition Corp. IV, Austria Merger Sub, Inc., and NKGen
              Biotech, Inc.

  10.1          Sponsor Support and Lockup Agreement, dated as of April 14, 2023, by
              and among Graf Acquisition Corp. IV, NKGen Biotech, Inc., Graf
              Acquisition Partners IV, LLC, and certain officers and directors of
              Graf Acquisition Corp. IV named as parties thereto.

  10.2          NKGen Support Agreement, dated as of April 14, 2023, by and among
              Graf Acquisition Corp. IV, and the stockholders of NKGen Biotech, Inc.
              named as parties thereto.

  10.3          Backstop Agreement, dated as of April 14, 2023, by and among Graf
              Acquisition Corp. IV and NKMAX Co., Ltd.

  10.4          Form of Lockup Agreement.

  10.5          Form of Amended and Restated Registration Rights Agreement.

  99.1          Joint Press Release, dated as of April 14, 2023.

104           Cover Page Interactive Data File - Embedded within the inline XBRL
              document



† Certain of the exhibits and schedules to this Exhibit have been omitted in


    accordance with Regulation S-K Item 601(a)(5). The Registrant agrees to
    furnish a copy of all omitted exhibits and schedules to the SEC upon its
    request.




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