Nilsa Guerrero-Mahon - Aug 18, 2025 Form 4 Insider Report for NIOCORP DEVELOPMENTS LTD (NB)

Role
Director
Signature
/s/ Neal S. Shah, as attorney-in-fact
Stock symbol
NB
Transactions as of
Aug 18, 2025
Transactions value $
$0
Form type
4
Date filed
8/20/2025, 04:43 PM
Previous filing
Dec 23, 2024
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Guerrero-Mahon Nilsa Director C/O NIOCORP DEVELOPMENTS LTD., 7000 YOSEMITE STREET, SUITE 115, CENTENNIAL /s/ Neal S. Shah, as attorney-in-fact 2025-08-20 0001718789

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction NB Director Stock Option (Right to Buy) Award $0 +55K $0.00 55K Aug 18, 2025 Common Shares 55K $4.35 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 34% of the options vested on the grant date and the remainder will vest in equal installments on each anniversary of the grant date until August 18, 2027.