[Form 4] NioCorp Developments Ltd. Insider Trading Activity

Rhea-AI Filing Summary

Mark A. Smith, President & CEO and a Director of NioCorp Developments Ltd. (NB), acquired 375,000 employee stock options on 08/18/2025. The options have an exercise price of $4.35 and 34% vested on the grant date; the remainder vests in equal installments each anniversary through 08/18/2027. The options are exercisable beginning 08/19/2025 and expire 08/19/2030. After the transaction, Mr. Smith beneficially owns 375,000 options reported as direct ownership.

Positive

• Reporting person is identified as President & CEO and Director, providing clear corporate role context.
• Grant of 375,000 employee stock options dated 08/18/2025 is explicitly recorded.
• Exercise price of $4.35 and full post-transaction beneficial ownership of 375,000 options are disclosed.
• Vesting schedule stated: 34% vested at grant with remaining vesting in equal annual installments through 08/18/2027.

Negative

• None.

Insights

Corporate Governance Expert

TL;DR: Insider option grant to CEO/director with multi-year vesting; confirms executive equity compensation.

The Form 4 documents an 08/18/2025 acquisition of 375,000 employee stock options by Mark A. Smith, who is identified as both President & CEO and a director. The filing reports a direct beneficial ownership of 375,000 options, an exercise price of $4.35, an exercisability start date of 08/19/2025 and an expiration of 08/19/2030. The vesting schedule: 34% vested at grant, with the remainder vesting in equal annual installments to 08/18/2027. This filing transparently records the equity-based compensation event and the relevant mechanics.

Compensation Analyst

TL;DR: Option grant structure: partial immediate vesting plus annual vesting to 2027; five-year contractual life to 2030.

The reported derivative security is an employee stock option with a $4.35 exercise price and a stated grant on 08/18/2025. The filing specifies that 34% of the options vested on the grant date and the remainder vests annually until 08/18/2027. The options are exercisable starting 08/19/2025 and expire 08/19/2030. The Form 4 records direct beneficial ownership of 375,000 options following the acquisition and provides no additional amendments or joint filers.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Smith Mark A.

(Last) (First) (Middle)

C/O NIOCORP DEVELOPMENTS LTD.

7000 YOSEMITE STREETE, SUITE 115

(Street)

CENTENNIAL CO 80112

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
NIOCORP DEVELOPMENTS LTD [ NB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President & CEO

3. Date of Earliest Transaction (Month/Day/Year)
08/18/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Employee Stock Option (Right to Buy)	$4.35	08/18/2025		A		375,000		(1)	08/19/2030	Common Shares	375,000	$0	375,000	D

Explanation of Responses:

1. 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.

Remarks:

Exhibit 24.1 - Power of Attorney

	/s/ Mark A. Smith	08/20/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

How many options did Mark A. Smith acquire in the Form 4 for NioCorp (NB)?

The filing shows an acquisition of 375,000 employee stock options on 08/18/2025.

What is the exercise price and expiration date of the options reported on Form 4?

The options have an exercise price of $4.35 and an expiration date of 08/19/2030.

What vesting terms are disclosed for the options in the Form 4?

The Form 4 states 34% vested on the grant date, with the remainder vesting in equal annual installments until 08/18/2027.

What is Mark A. Smith's role at NioCorp according to the filing?

He is reported as President & CEO and a Director of NioCorp Developments Ltd.

When did the options become exercisable according to the Form 4?

The filing indicates the options are exercisable beginning 08/19/2025.