v3.25.2
Cover
Jul. 14, 2025
Document Type 8-K
Amendment Flag false
Document Period End Date Jul. 14, 2025
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, $0.0001 par value per share  
Title of 12(b) Security Common Stock, $0.0001 par value per share
Trading Symbol NKGN
Warrants, each whole warrant exercisable for one share of Common Stock at an exercise price of $11.50 per share  
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