# EDGAR Filing Document

**Accession Number:** 0002035448
**File Stem:** 0001104659-25-055325
**Filing Date:** 2025-6
**Character Count:** 9376
**Document Hash:** 1a6a70515f22fcebffba5d6180f5a5fd
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-25-055325.hdr.sgml**: 20250602

**ACCESSION NUMBER**: 0001104659-25-055325

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250527

**FILED AS OF DATE**: 20250602

**DATE AS OF CHANGE**: 20250602

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** CHERNG PEGGY
- **CENTRAL INDEX KEY:** 0001235503

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-40427
- **FILM NUMBER:** 251013796

**MAIL ADDRESS:**
- **STREET 1:** 415 HUNTINGTON DRIVE
- **CITY:** SAN MARINO
- **STATE:** CA
- **ZIP:** 91108
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Cherng Andrew Jin-Chan
- **CENTRAL INDEX KEY:** 0002035448

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-40427
- **FILM NUMBER:** 251013797

**MAIL ADDRESS:**
- **STREET 1:** 1120 N. TOWN CENTER DRIVE
- **STREET 2:** SUITE 150
- **CITY:** LAS VEGAS
- **STATE:** NV
- **ZIP:** 89144
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** CFIC-2015 NV Family Investments, LLC
- **CENTRAL INDEX KEY:** 0002034776

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** NV
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-40427
- **FILM NUMBER:** 251013798

**BUSINESS ADDRESS:**
- **STREET 1:** 1120 N. TOWN CENTER DRIVE
- **STREET 2:** SUITE 150
- **CITY:** LAS VEGAS
- **STATE:** NV
- **ZIP:** 89144
- **BUSINESS PHONE:** 626-799-9898

**MAIL ADDRESS:**
- **STREET 1:** 1120 N. TOWN CENTER DRIVE
- **STREET 2:** SUITE 150
- **CITY:** LAS VEGAS
- **STATE:** NV
- **ZIP:** 89144
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** NKGen Biotech, Inc.
- **CENTRAL INDEX KEY:** 0001845459
- **STANDARD INDUSTRIAL CLASSIFICATION:** BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 3001 DAIMLER ST,
- **CITY:** SANTA ANA
- **STATE:** CA
- **ZIP:** 92705
- **BUSINESS PHONE:** (949) 396-6830

**MAIL ADDRESS:**
- **STREET 1:** 3001 DAIMLER ST,
- **CITY:** SANTA ANA
- **STATE:** CA
- **ZIP:** 92705

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Graf Acquisition Corp. IV
- **DATE OF NAME CHANGE:** 20210210

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>CFIC-2015 NV Family Investments, LLC<br><sub>(Last) (First) (Middle)</sub><br>1120 N. TOWN CENTER DRIVE, SUITE 150<br><sub>(Street)</sub><br>LAS VEGAS, NV 89144<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-05-27 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>NKGen Biotech, Inc. [ NKGN ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Cherng Andrew Jin-Chan<br><sub>(Last) (First) (Middle)</sub><br>1120 N. TOWN CENTER DRIVE, SUITE 150<br><sub>(Street)</sub><br>LAS VEGAS, NV 89144<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-05-27 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>NKGen Biotech, Inc. [ NKGN ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>CHERNG PEGGY<br><sub>(Last) (First) (Middle)</sub><br>1120 N. TOWN CENTER DRIVE, SUITE 150<br><sub>(Street)</sub><br>LAS VEGAS, NV 89144<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-05-27 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>NKGen Biotech, Inc. [ NKGN ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2025-05-27 |  | P<sup>(1)</sup> |  | 19669552 | A | $0.1271 | 21752885 | D |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Warrant | $0.1271 | 2025-05-27 |  | P<sup>(2)</sup> |  | 39339103 |  | 2025-05-27 | 2030-05-27 | Common Stock | 39339103 | $0.1271 | 39339103 | D |  |

---

### Footnotes:

(1) On May 27, 2025, CFIC-2015 NV Family Investments, LLC ("CFIC-2015") completed the purchase of an aggregate of 19,669,552 shares of the Issuer's common stock, par value $0.0001 per share ("Common Stock") at a purchase price of $0.1271 per share (the "Share Price"), subject to adjustment, for an aggregate purchase price of $2,500,000.00 pursuant to a Stock Purchase Agreement dated May 14, 2025 between the CFIC-2015 and the Issuer. Andrew Cherng and Peggy Cherng together own 100% of the voting interests of CFIC-2015.

(2) On May 27, 2025, the Issuer issued a common stock purchase warrant to CFIC-2015 for the purchase of up to 39,339,103 shares of Common Stock, exercisable at the Share Price (the "2025 Warrant").

**Signature:** /s/ Mecky Wong, Manager of CFIC-2015 NV Family Investments, LLC  
**Date:** 2025-05-29

**Signature:** /s/ Andrew Cherng  
**Date:** 2025-05-29

**Signature:** /s/ Peggy Cherng  
**Date:** 2025-05-29

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**