v3.26.1
Cover
May 05, 2026
Document Type 8-K
Amendment Flag false
Document Period End Date May 05, 2026
Current Fiscal Year End Date --11-30
Entity File Number 001-41945
Entity Registrant Name Legato Merger Corp. III
Entity Central Index Key 0002002038
Entity Tax Identification Number 98-1761148
Entity Incorporation, State or Country Code E9
Entity Address, Address Line One 777 Third Avenue
Entity Address, Address Line Two 37th Floor
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10017
City Area Code (212)
Local Phone Number 319-7676
Written Communications true
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 ordinary share and one-half of one redeemable warrant  
Title of 12(b) Security Units, each consisting of one ordinary share and one-half of one redeemable warrant
Trading Symbol LEGT U
Security Exchange Name NYSEAMER
Ordinary shares, par value $0.0001 per share  
Title of 12(b) Security Ordinary shares, par value $0.0001 per share
Trading Symbol LEGT
Security Exchange Name NYSEAMER
Redeemable warrants, exercisable for ordinary shares at an exercise price of $11.50 per share  
Title of 12(b) Security Redeemable warrants, exercisable for ordinary shares at an exercise price of $11.50 per share
Trading Symbol LEGT WS
Security Exchange Name NYSEAMER