Mark A. Smith - 18 Aug 2025 Form 4 Insider Report for NIOCORP DEVELOPMENTS LTD (NB)

Reporting relationship: President & CEO, Director
Issuer ticker: NB
Reported as of: 18 Aug 2025
Net transaction value: $0
SEC form: 4
Accepted by SEC: 20 Aug 2025, 16:42:51 UTC
Prior SEC filing: 28 Apr 2025
Next SEC filing: 15 Dec 2025
Source filing: View source filing
Reporting owner signature: /s/ Mark A. Smith

Key filing fact

Mark A. Smith filed Form 4 for NIOCORP DEVELOPMENTS LTD (NB) on 20 Aug 2025.

Key facts

This page summarizes Mark A. Smith's Form 4 filing for NIOCORP DEVELOPMENTS LTD (NB).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 20 Aug 2025, 16:42.

Change

Previous filing in this sequence was filed on 28 Apr 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001496772 Primary reporting owner

Smith Mark A.

Relationship: President & CEO, Director
Address: C/O NIOCORP DEVELOPMENTS LTD., 7000 YOSEMITE STREETE, SUITE 115, CENTENNIAL
Signature: /s/ Mark A. Smith
Signature date: 20 Aug 2025

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

NB transaction Derivative

Employee Stock Option (Right to Buy)

Award

Transaction value: $0
Shares: +375,000
Change %
Price: $0.000000
Shares after: 375,000
Date: 18 Aug 2025
Ownership: Direct
Underlying class: Common Shares
Underlying amount: 375,000
Exercise price: $4.35
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote 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.

SEC remarks

Exhibit 24.1 - Power of Attorney