Key facts
- NB - NIOCORP DEVELOPMENTS LTD has 15 insiders with reported activity on this page.
- No net insider buy/sell flow is currently reported for the last year.
- Recent transaction rows are available for direct filing-level review.
Insider Transactions Reported by 15 Insiders of NIOCORP DEVELOPMENTS LTD
- Symbol
- NB, NIOBW on Nasdaq
- Location
- Centennial, CO
Change
- No meaningful buy/sell imbalance is currently visible in the one-year window.
- Activity will update as new Forms 3/4/5 are filed.
Research use
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsInsider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 28 May 2025.
Buys
$0
Shares: 0
Insiders: 0
Sells
$0
Shares: 0
Insiders: 0
Net
$0
Shares: 0
Insiders: 0
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
NIOCORP DEVELOPMENTS LTD executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Mark A. Smith | President & CEO, Director | $8,208,619 | Mixed | 15 Dec 2025 | ||
| Michael G. Maselli | Director | $2,505,907 | Mixed | 18 Aug 2025 | ||
| Dean C. Kehler | Director | $752,543 | Mixed | 15 Dec 2025 | ||
| Anthony W. Fulton | Director | $485,960 | Mixed | 18 Aug 2025 | ||
| Neal S. Shah | Chief Financial Officer | $265,613 | Mixed | 15 Dec 2025 | ||
| Anna Castner Wightman | Director | $125,213 | Mixed | 15 Nov 2023 | ||
| Michael James Morris | Director | Mixed | 23 Dec 2024 | |||
| David Coates Beling | Director | Mixed | 18 Aug 2025 | |||
| Michael G. Maselli | Director | Mixed | 17 Mar 2023 | |||
| Ernest M. Cleave | Senior VP Business Development | Mixed | 18 Aug 2025 | |||
| Nilsa Guerrero-Mahon | Director | Mixed | 18 Aug 2025 | |||
| James T. Sims | Chief Communications Officer | Mixed | 18 Aug 2025 | |||
| Fernanda Reda Fenga Viana Klamas | Director | Mixed | 25 Mar 2023 | |||
| Peter Robert Oliver | Director | Mixed | 18 Aug 2025 | |||
| Scott Honan | Chief Operating Officer | Mixed | 18 Aug 2025 |
Top shareholders of NIOCORP DEVELOPMENTS LTD (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
|
Company |
4.8%
from 13D/G
|
7,017,758
|
$31,299,200 | — | 31 Mar 2026 | |
| CITADEL ADVISORS LLC |
13D/G
13F
|
Kenneth Griffin · Company |
4.3%
|
6,216,351
|
$27,724,925 | +$25,460,182 | 25 Feb 2026 | |
| Brevan Howard Capital Management LP |
13F
|
Company |
4.6%
|
6,485,000
|
$28,047,625 | — | 31 Mar 2026 | |
| Alyeska Investment Group, L.P. |
13F
|
Company |
3%
|
4,313,607
|
$19,238,687 | — | 31 Mar 2026 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
2.3%
|
3,287,363
|
$14,661,640 | — | 31 Mar 2026 | |
| PRIVATE MANAGEMENT GROUP INC |
13F
|
Company |
1.5%
|
2,145,364
|
$9,568,323 | — | 31 Mar 2026 | |
| STATE STREET CORP |
13F
|
Company |
1.5%
|
2,068,059
|
$9,223,543 | — | 31 Mar 2026 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
1.1%
|
1,556,532
|
$6,940,861 | — | 31 Mar 2026 | |
| CITIGROUP INC |
13F
|
Company |
0.8%
|
1,138,631
|
$5,078,294 | — | 31 Mar 2026 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.79%
|
1,117,028
|
$4,981,944 | — | 31 Mar 2026 | |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13F
|
Company |
0.71%
|
1,008,851
|
$4,499,475 | — | 31 Mar 2026 | |
| HITE Hedge Asset Management LLC |
13F
|
Company |
0.64%
|
902,680
|
$4,025,953 | — | 31 Mar 2026 | |
| Bridgewater Associates, LP |
13F
|
Company |
0.62%
|
882,745
|
$3,937,043 | — | 31 Mar 2026 | |
| Deltroit Asset Management (UK) LLP |
13F
|
Company |
0.61%
|
867,750
|
$3,870,165 | — | 31 Mar 2026 | |
| Nuveen, LLC |
13F
|
Company |
0.51%
|
722,860
|
$3,223,956 | — | 31 Mar 2026 | |
| ALPS ADVISORS INC |
13F
|
Company |
0.41%
|
583,898
|
$2,604,185 | — | 31 Mar 2026 | |
| Squarepoint Ops LLC |
13F
|
Company |
0.4%
|
562,949
|
$2,510,753 | — | 31 Mar 2026 | |
| Point72 Asset Management, L.P. |
13F
|
Company |
0.36%
|
505,835
|
$2,256,024 | — | 31 Mar 2026 | |
| KINGDON CAPITAL MANAGEMENT, L.L.C. |
13F
|
Company |
0.32%
|
450,000
|
$2,007,000 | — | 31 Mar 2026 | |
| MORGAN STANLEY |
13F
|
Company |
0.31%
|
442,378
|
$1,973,005 | — | 31 Mar 2026 | |
| Jump Financial, LLC |
13F
|
Company |
0.26%
|
369,863
|
$1,649,589 | — | 31 Mar 2026 | |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP |
13F
|
Company |
0.25%
|
360,450
|
$1,607,607 | — | 31 Mar 2026 | |
| Swiss National Bank |
13F
|
Company |
0.2%
|
287,500
|
$1,282,250 | — | 31 Mar 2026 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.18%
|
258,268
|
$1,151,875 | — | 31 Mar 2026 | |
| BANK OF MONTREAL /CAN/ |
13F
|
Company |
0.18%
|
249,007
|
$1,110,571 | — | 31 Mar 2026 | |
| Corient Private Wealth LLC |
13F
|
Company |
0.16%
|
228,761
|
$1,020,273 | — | 31 Mar 2026 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.16%
|
225,434
|
$1,005,436 | — | 31 Mar 2026 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.15%
|
206,828
|
$922,453 | — | 31 Mar 2026 | |
| PFG Advisors |
13F
|
Company |
0.14%
|
196,675
|
$877,171 | — | 31 Mar 2026 | |
| Universal- Beteiligungs- und Servicegesellschaft mbH |
13F
|
Individual |
0.14%
|
193,000
|
$860,780 | — | 31 Mar 2026 | |
| Harfst & Associates, Inc. |
13F
|
Company |
0.13%
|
190,420
|
$849,274 | — | 31 Mar 2026 | |
| LOS ANGELES CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.13%
|
189,159
|
$843,649 | — | 31 Mar 2026 | |
| Cambridge Investment Research Advisors, Inc. |
13F
|
Company |
0.13%
|
179,090
|
$799,000 | — | 31 Mar 2026 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.12%
|
176,385
|
$786,677 | — | 31 Mar 2026 | |
| RAYMOND JAMES FINANCIAL INC |
13F
|
Company |
0.12%
|
175,146
|
$781,151 | — | 31 Mar 2026 | |
| LPL Financial LLC |
13F
|
Company |
0.12%
|
173,177
|
$772,369 | — | 31 Mar 2026 | |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. |
13F
|
Company |
0.11%
|
162,024
|
$693,767 | — | 31 Mar 2026 | |
| BNP PARIBAS FINANCIAL MARKETS |
13F
|
Company |
0.11%
|
159,104
|
$709,604 | — | 31 Mar 2026 | |
| Quantinno Capital Management LP |
13F
|
Company |
0.11%
|
155,554
|
$693,771 | — | 31 Mar 2026 | |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC |
13F
|
Company |
0.11%
|
154,888
|
$690,800 | — | 31 Mar 2026 | |
| MARSHALL WACE, LLP |
13F
|
Company |
0.1%
|
135,000
|
$602,100 | — | 31 Mar 2026 | |
| Advisory Services Network, LLC |
13F
|
Company |
0.09%
|
123,692
|
$551,666 | — | 31 Mar 2026 | |
| RHUMBLINE ADVISERS |
13F
|
Company |
0.09%
|
123,683
|
$551,620 | — | 31 Mar 2026 | |
| Legal & General Group Plc |
13F
|
Company |
0.08%
|
119,955
|
$535,000 | — | 31 Mar 2026 | |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP |
13F
|
Company |
0.08%
|
119,919
|
$534,839 | — | 31 Mar 2026 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.08%
|
118,594
|
$528,929 | — | 31 Mar 2026 | |
| CreativeOne Wealth, LLC |
13F
|
Company |
0.08%
|
116,521
|
$519,684 | — | 31 Mar 2026 | |
| BARCLAYS PLC |
13F
|
Company |
0.08%
|
109,149
|
$486,805 | — | 31 Mar 2026 | |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM |
13F
|
Company |
0.08%
|
107,799
|
$480,784 | — | 31 Mar 2026 | |
| DEUTSCHE BANK AG\ |
13F
|
Company |
0.07%
|
104,888
|
$467,801 | — | 31 Mar 2026 |
Recent Insider Transactions by Companies or Individuals for NIOCORP DEVELOPMENTS LTD
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Mark A. Smith | NB | Common Shares | Exercise of in-the-money or at-the-money derivative security | 2.06% | 46,801 | 2,318,819 | 15 Dec 2025 | Direct | ||
| Mark A. Smith | NB | Common Share Purchase Warrant (right to buy) | Exercise of in-the-money or at-the-money derivative security | -100% | -46,801 | 0 | 15 Dec 2025 | Direct | ||
| Neal S. Shah | NB | Common Shares | Exercise of in-the-money or at-the-money derivative security | 14.2% | 9,361 | 75,032 | 15 Dec 2025 | Direct | ||
| Neal S. Shah | NB | Common Share Purchase Warrant (right to buy) | Exercise of in-the-money or at-the-money derivative security | -100% | -9,361 | 0 | 15 Dec 2025 | Direct | ||
| Dean C. Kehler | NB | Common Shares | Exercise of in-the-money or at-the-money derivative security | 58% | 78,003 | 212,583 | 15 Dec 2025 | Direct | ||
| Dean C. Kehler | NB | Common Share Purchase Warrant (right to buy) | Exercise of in-the-money or at-the-money derivative security | -100% | -78,003 | 0 | 15 Dec 2025 | Direct | ||
| Ernest M. Cleave | NB | Employee Stock Option (Right to Buy) | Award | 100,000 | 100,000 | 18 Aug 2025 | Direct | |||
| Anthony W. Fulton | NB | Director Stock Option (Right to Buy) | Award | 50,000 | 50,000 | 18 Aug 2025 | Direct | |||
| James T. Sims | NB | Employee Stock Option (Right to Buy) | Award | 250,000 | 250,000 | 18 Aug 2025 | Direct | |||
| Neal S. Shah | NB | Employee Stock Option (Right to Buy) | Award | 250,000 | 250,000 | 18 Aug 2025 | Direct | |||
| Peter Robert Oliver | NB | Director Stock Option (Right to Buy) | Award | 60,000 | 60,000 | 18 Aug 2025 | Direct | |||
| Dean C. Kehler | NB | Director Stock Option (Right to Buy) | Award | 50,000 | 50,000 | 18 Aug 2025 | Direct | |||
| Scott Honan | NB | Employee Stock Option (Right to Buy) | Award | 250,000 | 250,000 | 18 Aug 2025 | Direct | |||
| Nilsa Guerrero-Mahon | NB | Director Stock Option (Right to Buy) | Award | 55,000 | 55,000 | 18 Aug 2025 | Direct | |||
| David Coates Beling | NB | Director Stock Option (Right to Buy) | Award | 50,000 | 50,000 | 18 Aug 2025 | Direct | |||
| Mark A. Smith | NB | Employee Stock Option (Right to Buy) | Award | 375,000 | 375,000 | 18 Aug 2025 | Direct | |||
| Michael G. Maselli | NB | Director Stock Option (Right to Buy) | Award | 50,000 | 50,000 | 18 Aug 2025 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.