v3.26.1
Cover
Aug. 06, 2026
Document Type 8-K
Amendment Flag false
Document Period End Date Aug. 06, 2026
Current Fiscal Year End Date --12-31
Entity File Number 001-43439
Entity Registrant Name Pinnacle Acquisition Corporation
Entity Central Index Key 0002123955
Entity Tax Identification Number 35-2953467
Entity Incorporation, State or Country Code E9
Entity Address, Address Line One 375 South County Road
Entity Address, Address Line Two Suite 220
Entity Address, City or Town Palm Beach
Entity Address, State or Province FL
Entity Address, Postal Zip Code 33480
City Area Code 561
Local Phone Number 309-3447
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
Units, each consisting of one Class A ordinary share and one right  
Title of 12(b) Security Units, each consisting of one Class A ordinary share and one right
Trading Symbol PNAQ.U
Security Exchange Name NYSE
Class A ordinary shares, par value $0.0001 per share  
Title of 12(b) Security Class A ordinary shares, par value $0.0001 per share
Trading Symbol PNAQ
Security Exchange Name NYSE
Rights, each right entitling the holder to receive one-eighth (1/8) of one Class A ordinary share  
Title of 12(b) Security Rights, each right entitling the holder to receive one-eighth (1/8) of one Class A ordinary share
Trading Symbol PNAQ.RT
Security Exchange Name NYSE