v3.25.2
Cover
Jul. 11, 2025
Document Type 8-K
Amendment Flag false
Document Period End Date Jul. 11, 2025
Entity File Number 001-41655
Entity Registrant Name NioCorp Developments Ltd.
Entity Central Index Key 0001512228
Entity Tax Identification Number 98-1262185
Entity Incorporation, State or Country Code A1
Entity Address, Address Line One 7000 South Yosemite Street
Entity Address, Address Line Two Suite 115
Entity Address, City or Town Centennial
Entity Address, State or Province CO
Entity Address, Postal Zip Code 80112
City Area Code (720)
Local Phone Number 334-7066
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Common Shares, without par value  
Title of 12(b) Security Common Shares, without par value
Trading Symbol NB
Security Exchange Name NASDAQ
Warrants, each exercisable for 1.11829212 Common Shares  
Title of 12(b) Security Warrants, each exercisable for 1.11829212 Common Shares
Trading Symbol NIOBW
Security Exchange Name NASDAQ