8-K

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): January 11, 2024

NKGen Biotech, Inc.

(Exact name of registrant as specified in its charter)

Delaware	001-40427	86-2191918
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)

3001 Daimler Street

Santa Ana, CA, 92705

(Address of principal executive offices and zip code)

Registrant’s telephone number, including area code: (949) 396-6830

Not Applicable

(Former name or former address, if changed since last report)

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 (see General Instruction A.2 below):

¨ 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))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, $0.0001 par value per share	NKGN	Nasdaq Global Market
Warrants, each whole warrant exercisable for one share of Common Stock at an exercise price of $11.50 per share	NKGNW	Nasdaq Capital Market

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 x

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.  ¨

Item 1.01. Entry into a Material Definitive Agreement.

On January 11, 2024, NKGen Biotech, Inc. (the “Company” and formerly known as Graf Acquisition Corp. IV (“Graf”)) and Seller (defined below) entered into a third amendment (the “Amendment”) to the forward purchase agreement, dated as of September 22, 2023 (the “FPA”), initially among the Company, Graf Acquisition Corp. IV, (“Graf”), Meteora Strategic Capital, LLC (“MSC”), Meteora Capital Partners, LP (“MCP”) and Meteora Select Trading Opportunities Master, LP (“MSTO” with MSC, MCP, and MSTO collectively, “Seller”) for OTC Equity Prepaid Forward Transactions, as amended on December 26, 2023 and as further amended on January 2, 2024. 

Pursuant to the Amendment, the Company and Seller agreed to increase (i) the Prepayment Shortfall (as defined in the Amendment) by $500,000, and (ii) the Prepayment Shortfall Consideration (as defined in the Amendment) by Shortfall Sales (as defined in the Amendment) equal to 120% of the Third Future Shortfall. All other terms and conditions remained unchanged.

The foregoing description of the Amendment does not purport to be complete and is qualified in its entirety by the terms and conditions of the Amendment, which is filed as Exhibit 10.1 to this Current Report on Form 8-K and incorporated herein by reference.

Item 9.01. Financial Statements and Exhibits

(d) Exhibits.

Exhibit No.	Description
10.1	Third Amendment to Forward Purchase Agreement, dated as of January 11, 2024, among NKGen and Meteora Capital Partners, LP and certain of its affiliates.
104	Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	NKGEN BIOTECH, INC.
Date: January 11, 2024	/s/ Paul Y. Song
	Name:	Paul Y. Song
	Title:	Chief Executive Officer
		(Principal Executive Officer)

EX-10.1

Exhibit 10.1

FORWARD PURCHASE AGREEMENT Confirmation THIRD AMENDMENT

THIS FORWARD PURCHASE AGREEMENT CONFIRMATION THIRD AMENDMENT, dated as of January 11, 2024 (this “Amendment”), is entered into by and among (i) Meteora Capital Partners, LP (“MCP”) (ii) Meteora Select Trading Opportunities Master, LP (“MSTO”) and (iii) Meteora Strategic Capital, LLC (“MSC”) (with MCP, MSTO and MSC collectively as “Seller”), and (iv) NKGen Biotech, Inc., a Delaware corporation (“NKGN” and formerly known as Graf Acquisition Corp. IV, a Delaware corporation).

Reference is hereby made to the OTC Equity Prepaid Forward Transaction, dated as of September 22, 2023 (the “Confirmation”), the Forward Purchase Agreement Confirmation Amendment, dated as of December 26, 2023 and the Forward Purchase Agreement Confirmation Second Amendment, dated as of January 2, 2024 (as amended from time to time, collectively the “Prior Amendments”), by and among Seller, NKGN and NKGen Operating Biotech, Inc. (“Target” and formerly known as NKGen Biotech, Inc., a Delaware corporation and now a wholly-owned subsidiary of NKGN). Capitalized terms not defined herein shall have the meanings assigned to such terms in the Confirmation.

On September 29, 2023, NKGN and Target completed the Business Combination, and accordingly, the Seller delivered a Pricing Date Notice to commence the Transaction.

1. Amendment: The parties hereto agree to amend the Confirmation as follows:

a. The Section titled “Prepayment Shortfall” shall be deleted in its entirety and replaced with the following:

Prepayment Shortfall: An amount in USD equal to 0.50% of the product of (i) the Recycled Shares multiplied by (ii) the Initial Price (the “Initial Shortfall”); provided that Seller shall pay 0.50% of the product of (i) the Recycled Shares multiplied by (ii) the Initial Price of the Prepayment Shortfall to Counterparty on the Prepayment Date (which amount shall be netted from the Prepayment Amount) and, at the request of Counterparty, an additional Prepayment Shortfall of $500,000 in cash (the “Future Shortfall”), with such request being made by no later than 5:00pm EST on December 26, 2023, after which the option will expire and, at the request of Counterparty, an additional Prepayment Shortfall of $500,000 in cash (the “Second Future Shortfall”), with such request being made by no later than 5:00pm EST on January 2, 2024, after which the option will expire, and, at the request of Counterparty, an additional Prepayment Shortfall of $500,000 in cash (the “Third Future Shortfall”), with such request being made by no later than 5:00pm EST on January 11, 2024, after which the option will expire.

b. The Section titled “Prepayment Shortfall Consideration” shall be deleted in its entirety and replaced with the following:

Prepayment Shortfall Consideration: Seller in its sole discretion may sell Recycled Shares at any time following the Trade Date without payment by Seller of any Early Termination Obligation (as defined below) until such time as the proceeds from such sales equal 100% the Prepayment Shortfall, other than the Third Future Shortfall which shall be set at 120% of the Prepayment Shortfall (as set forth under Shortfall Sales below) (such sales, “Shortfall Sales,” and such Shares, “Shortfall Sale Shares”). A sale of Shares is only (a) a “Shortfall Sale,” subject to the terms and conditions herein applicable to Shortfall Sale Shares, when a Shortfall Sale Notice is delivered hereunder, and (b) an Optional Early Termination, subject to the terms and conditions herein applicable to Terminated Shares, when an OET Notice (as defined below) is delivered hereunder, in each case the delivery of such notice in the sole discretion of the Seller. For the avoidance of doubt and notwithstanding anything to the contrary herein, Seller shall not be liable for any Settlement Amount payment with respect to the Shortfall Sale Shares.

2.      Non-Reliance. Seller acknowledges and agrees that NKGN is in possession of non-public information about NKGN and its securities that has not been provided to Seller and that may or may not be material or superior to information available to Seller, and that Seller, in entering into this Amendment, has not relied and is not relying on any representations, warranties or other statements whatsoever, whether written or oral (from or by NKGN or any Person acting on their behalf) other than those expressly set out in this Amendment (or other related documents referred to herein) and that it will not have any right or remedy rising out of any representation, warranty or other statement not expressly set out in this Amendment or the Confirmation. Seller hereby waives any claim, or potential claim, it has or may have against NKGN and its officers and directors relating to NKGN’s possession of material non-public information.

3.      No Other Amendments. All other terms and conditions of the Confirmation and the Amendments shall remain in full force and effect and the Confirmation shall be read and construed as if the terms of this Amendment were included therein by way of addition or substitution, as the case may be.

4.      Execution in Counterparts. This Amendment may be executed in any number of counterparts, each of which when so executed shall be deemed to be an original and all of which when taken together shall constitute one and the same agreement.

5.      Ratification. The terms and provisions set forth in this Amendment modify and supersede all inconsistent terms and provisions set forth in the Confirmation and, except as expressly modified and superseded by this Amendment, the terms and provisions of the Confirmation are ratified and confirmed and continue in full force and effect. All parties hereby agree that the Confirmation and Prior Amendments, as amended by this Amendment, shall continue to be legal, valid, binding and enforceable in accordance with their terms.

6.      THIS AMENDMENT SHALL BE GOVERNED BY, AND CONSTRUED AND ENFORCED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK (WITHOUT GIVING EFFECT TO THE CONFLICT OF LAWS PROVISIONS THEREOF).

IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be executed and delivered by their duly authorized officers as of the date first above written.

METEORA STRATEGIC CAPITAL, LLC;
METEORA SELECT TRADING OPPORTUNITIES MASTER, LP; AND
METEORA CAPITAL PARTNERS, LP
By:	/s/ Vik Mittal
	Name: Vik Mittal
	Title: Managing Member
NKGEN BIOTECH, INC.
By:	/s/ Paul Y. Song
	Name: Paul Y. Song
	Title: Chief Executive Officer

XML

Cover	Jan. 11, 2024
Document Information [Line Items]
Document Type	8-K
Amendment Flag	false
Document Period End Date	Jan. 11, 2024
Entity File Number	001-40427
Entity Registrant Name	NKGen Biotech, Inc.
Entity Central Index Key	0001845459
Entity Tax Identification Number	86-2191918
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	3001 Daimler Street
Entity Address, City or Town	Santa Ana
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92705
City Area Code	949
Local Phone Number	396-6830
Written Communications	false
Soliciting Material	false
Pre-commencement Tender Offer	false
Pre-commencement Issuer Tender Offer	false
Entity Emerging Growth Company	true
Elected Not To Use the Extended Transition Period	false
Common Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Common Stock, $0.0001 par value per share
Trading Symbol	NKGN
Security Exchange Name	NASDAQ
Warrant [Member]
Document Information [Line Items]
Title of 12(b) Security	Warrants, each whole warrant exercisable for one share of Common Stock at an exercise price of $11.50 per share
Trading Symbol	NKGNW
Security Exchange Name	NASDAQ