Anthony W. Fulton - 09 Aug 2025 Form 3 Insider Report for NIOCORP DEVELOPMENTS LTD (NB)

Role: Director
Signature: /s/ Neal S. Shah, attorney-in-fact
Issuer symbol: NB
Transactions as of: 09 Aug 2025
Net transactions value: $0
Form type: 3
Filing time: 02 Sep 2025, 17:20:06 UTC
Next filing: 02 Sep 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Fulton Anthony W	Director	C/O NIOCORP DEVELOPMENTS LTD, 7000 YOSEMITE STREET, SUITE 115, CENTENNIAL	/s/ Neal S. Shah, attorney-in-fact	02 Sep 2025	0002084188

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	NB	Common Shares						178,457	09 Aug 2025	Direct
holding	NB	Common Shares						747	09 Aug 2025	By spouse
holding	NB	Common Shares						114	09 Aug 2025	By son
holding	NB	Common Shares						28	09 Aug 2025	By minor child
holding	NB	Common Shares						4	09 Aug 2025	By minor child

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
holding	NB	Common Share Purchase Warrant (right to buy)							09 Aug 2025	Common Shares	42,531	$10.28	Direct	F1
holding	NB	Common Share Purchase Warrant (right to buy)							09 Aug 2025	Common Shares	12,252	$10.28	By spouse	F1
holding	NB	Common Share Purchase Warrant (right to buy)							09 Aug 2025	Common Shares	2	$10.28	By son	F1
holding	NB	Common Share Purchase Warrant (right to buy)							09 Aug 2025	Common Shares	7	$10.28	By minor child	F1
holding	NB	Common Share Purchase Warrant (right to buy)							09 Aug 2025	Common Shares	67	$10.28	By minor child	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Each warrant is exercisable for 1.11829212 common shares, without par value (the "Common Shares"), of the Issuer at an exercise price of $11.50 per 1.11829212 Common Shares (or approximately $10.284 per Common Share).

Remarks:

Exhibit 24.1 - Power of Attorney