v3.25.2
Cover
Jul. 31, 2025
Document Type 8-K
Amendment Flag false
Document Period End Date Jul. 31, 2025
Current Fiscal Year End Date --12-31
Entity File Number 001-42774
Entity Registrant Name HCM III Acquisition Corp.
Entity Central Index Key 0002069856
Entity Tax Identification Number 98-1854444
Entity Incorporation, State or Country Code E9
Entity Address, Address Line One 100 First Stamford Place
Entity Address, Address Line Two Suite 330
Entity Address, City or Town Stamford
Entity Address, State or Province CT
Entity Address, Postal Zip Code 06902
City Area Code 203
Local Phone Number 930-2200
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-third of one Redeemable Warrant  
Title of 12(b) Security Units, each consisting of one Class A ordinary share and one-third of one Redeemable Warrant
Trading Symbol HCMAU
Security Exchange Name NASDAQ
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 HCMA
Security Exchange Name NASDAQ
Redeemable Warrants, each whole warrant exercisable for one Class ordinary share at a price of $11.50 per share  
Title of 12(b) Security Redeemable Warrants, each whole warrant exercisable for one Class ordinary share at a price of $11.50 per share
Trading Symbol HCMAW
Security Exchange Name NASDAQ