As of November 6, 2026, one holder's latest Schedule 13D or 13G filing report owning 5% or more of Niocorp Developments Ltd. The largest reported stake is BlackRock, Inc.'s, at 6.2%. 7 filings are on record since July 25, 2025 (Schedule 13G, July 29, 2026).
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Key facts
- · Reporting person: BlackRock, Inc. · Sole voting: 8,796,392 · Shared voting: 0 · Sole dispositive: 9,013,741 · Shared dispositive: 0 · SCHEDULE 13G, 2026-07-29
- · Holder: BlackRock, Inc. · Percent: 4.8% · SCHEDULE 13G/A
- · Reporting person: Citadel Advisors LLC · Sole voting: 0 · Shared voting: 4,932,309 · Sole dispositive: 0 · Shared dispositive: 4,932,309 · SCHEDULE 13G, 2026-04-08
- · Holder: Citadel Securities Group LP · Percent: 0.4% · SCHEDULE 13G/A
- · Holder: BlackRock, Inc. · Percent: 5.2% · SCHEDULE 13G
Niocorp Developments Ltd has 7 Schedule 13D or 13G filings on record since 2025-07-25. 1 holder's latest filing reports 5% or more of common stock. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| BlackRock, Inc. | 6.2% | 9,013,741 | SCHEDULE 13G, 2026-07-29 | 2026-06-30 |
| 4.3% | 6,216,351 | SCHEDULE 13G, 2026-04-08 | 2026-02-25 |
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More on Niocorp Developments Ltd and the records around it.
Niocorp Developments Ltd elsewhere on the record
- Acquisition Dec 2025
- Who owns it
Companies that share a holder
- Citadel Advisors LLC also filed stake reports on 58 other companies: Quantinuum Inc. (Oct 2026), REALLOYS INC. (Oct 2026), STARFIGHTERS SPACE, INC. (Oct 2026)
- BlackRock, Inc. also filed stake reports on 1596 other companies: AvePoint, Inc. (Nov 2026), BIOMARIN PHARMACEUTICAL INC (Nov 2026), MSG RANGERS CORP (Nov 2026)
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What the Full Report on Niocorp Developments Ltd covers
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| BlackRock, Inc. | 8,796,392 | 0 | 9,013,741 | 0 | SCHEDULE 13G, 2026-07-29 |
| Citadel Advisors LLC | 0 | 4,932,309 | 0 | 4,932,309 | SCHEDULE 13G, 2026-04-08 |
| Citadel Advisors Holdings LP | 0 | 4,932,309 | 0 | 4,932,309 | SCHEDULE 13G, 2026-04-08 |
| Citadel GP LLC | 0 | 4,932,309 | 0 | 4,932,309 | SCHEDULE 13G, 2026-04-08 |
| Citadel Securities LLC | 0 | 441,050 | 0 | 441,050 | SCHEDULE 13G, 2026-04-08 |
| Citadel Securities Group LP | 0 | 1,284,042 | 0 | 1,284,042 | SCHEDULE 13G, 2026-04-08 |
| Citadel Securities GP LLC | 0 | 1,284,042 | 0 | 1,284,042 | SCHEDULE 13G, 2026-04-08 |
| Kenneth Griffin | 0 | 6,216,351 | 0 | 6,216,351 | SCHEDULE 13G, 2026-04-08 |
The latest filing identifies Niocorp Developments Ltd by CUSIP 654484609 and gives its principal executive office as 7000 South Yosemite Street, Suite 115, Centennial, CO 80112 (SCHEDULE 13G, 2026-07-29).
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-25 | Kenneth Griffin | 5.4% | SCHEDULE 13G |
| 2025-11-14 | Kenneth Griffin | 8.2% | SCHEDULE 13G/A |
| 2026-01-21 | BlackRock, Inc. | 5.2% | SCHEDULE 13G |
| 2026-02-17 | Citadel Securities Group LP | 0.4% | SCHEDULE 13G/A |
| 2026-04-08 | Kenneth Griffin | 4.3% | SCHEDULE 13G |
| 2026-04-27 | BlackRock, Inc. | 4.8% | SCHEDULE 13G/A |
| 2026-07-29 | BlackRock, Inc. | 6.2% | SCHEDULE 13G |
Questions about who owns Niocorp Developments Ltd
Who owns Niocorp Developments Ltd?
On this page, one holder's latest ownership filing reports 5% or more of Niocorp Developments Ltd: BlackRock, Inc. (6.2%, Schedule 13G, filed 2026-07-29).
When did BlackRock, Inc. buy into Niocorp Developments Ltd?
The filings give report dates, not purchase dates. The earliest filing from BlackRock, Inc. on this page is the Schedule 13G, filed 2026-01-21, reporting 5.2%; its latest, Schedule 13G filed 2026-07-29, reports 6.2%.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 7 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
Also on the record for Niocorp Developments Ltd
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| July 8, 2026 | Leadership change filing (Form 8-K, Item 5.02) | — | Leadership changes | Source |
| December 4, 2025 | Acquired FEA Materials LLC | $8.40M | Acquisition | Source |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.