v3.26.3
Document And Entity Information - USD ($)
 12 Months Ended
Jun. 30, 2026
Sep. 21, 2026
Dec. 31, 2025
Document And Entity Information      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Jun. 30, 2026    
Document Transition Report false    
Securities Act File Number 001-39683    
Entity Registrant Name REZOLUTE, INC.    
Entity Incorporation, State or Country Code NV    
Entity Tax Identification Number 27-3440894    
Entity Address, Address Line One 275 Shoreline Drive, Suite 500    
Entity Address, City or Town Redwood City    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 94065    
City Area Code 650    
Local Phone Number 206-4507    
Title of 12(b) Security Common Stock, par value $0.001    
Trading Symbol RZLT    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 203,924,000
Entity Common Stock, Shares Outstanding   96,722,333  
Auditor Name GRANT THORNTON LLP    
Auditor Location Newport Beach, California    
Auditor Firm ID 248    
Entity Central Index Key 0001509261    
Current Fiscal Year End Date --06-30    
Document Fiscal Year Focus 2026    
Document Fiscal Period Focus FY    
Amendment Flag false