v3.25.2
Cover
Aug. 04, 2025
Document Type 8-K
Amendment Flag false
Document Period End Date Aug. 04, 2025
Entity File Number 001-42493
Entity Registrant Name FG Merger II Corp.
Entity Central Index Key 0001906364
Entity Tax Identification Number 86-2579471
Entity Incorporation, State or Country Code NV
Entity Address, Address Line One 104 S. Walnut Street
Entity Address, Address Line Two Unit 1A
Entity Address, City or Town Itasca
Entity Address, State or Province IL
Entity Address, Postal Zip Code 60143
City Area Code 847
Local Phone Number 751-9017
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]  
Title of 12(b) Security Common Stock
Trading Symbol FGMC
Security Exchange Name NASDAQ
Rights [Member]  
Title of 12(b) Security Rights
Trading Symbol FGMCR
Security Exchange Name NASDAQ
Units [Member]  
Title of 12(b) Security Units
Trading Symbol FGMCU
Security Exchange Name NASDAQ