Niocorp Developments Ltd
NB- Exchange
- Nasdaq
- Industry
- Metal Mining
- SEC CIK
- 0001512228
No open-market purchases or sales by Niocorp Developments Ltd insiders were filed in the last 90 days; 211 institutions reported holding it in 13F filings for Q2 2026, worth $234.6M in total; no superinvestor holds it.
Other share classesNIOBW
Holders of 5% or more of NB
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Niocorp Developments Ltd, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Citadel Advisors LLC | 13G/A | 8.20%7.95M shares | +2.80 ppfrom 5.40% | Jul 25, 20252 filings | Nov 14, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
2 Schedule 13D and 13G filings on Niocorp Developments Ltd, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Nov 14, 20254:04 PM ET | Citadel Advisors LLCand 6 others | 13G/A | 8.20%7.95M shares | +2.80 ppfrom 5.40% | Sep 30, 2025 | SEC |
| Jul 25, 20257:24 PM ET | Citadel Advisors LLCand 6 others | 13G | 5.40%3.90M shares | New | Jul 18, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Niocorp Developments Ltd shares.
No Form 144 notices for Niocorp Developments Ltd are on file.