BlackRock reports 4.8% stake in NioCorp (NYSE: NB) via aggregated units

Rhea-AI Filing Summary

BlackRock, Inc. amends a Schedule 13G to report its beneficial ownership of NioCorp Developments Ltd common stock. The filing states BlackRock beneficially owns 6,814,525 shares, representing 4.8% of the class, with 6,638,532 shares of sole voting power. The amendment is signed by Spencer Fleming on 04/27/2026.

The filing notes holdings reflect securities held across Reporting Business Units of BlackRock and provides addresses and exhibit references for power of attorney and subsidiary identification.

Insights

Institutional Ownership Analyst

BlackRock reports a 4.8% stake in NioCorp via aggregated business units.

BlackRock's Schedule 13G/A lists 6,814,525 shares beneficially owned and 6,638,532 shares with sole voting power, indicating consolidated reporting across its Reporting Business Units rather than a single account. The filing follows Securities Exchange release aggregation guidance.

Ownership is below 5.0%, which the filer categorizes as passive; subsequent changes would appear in amendments if thresholds are crossed or status changes.

Key Figures

Beneficially owned: 6,814,525 shares Percent of class: 4.8% Sole voting power: 6,638,532 shares +2 more

5 metrics

Beneficially owned 6,814,525 shares Amount beneficially owned per Item 4(a)

Percent of class 4.8% Percent of class per Item 4(b)

Sole voting power 6,638,532 shares Item 4(c)(i) sole power to vote

Sole dispositive power 6,814,525 shares Item 4(c)(iii) sole power to dispose

CUSIP 654484609 Cover page CUSIP for common stock

Key Terms

Schedule 13G/A, Beneficial ownership, Sole dispositive power, Reporting Business Units, +1 more

5 terms

Schedule 13G/A regulatory

"Amendment No. 1 ) NIOCORP DEVELOPMENTS LTD"

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

Beneficial ownership regulatory

"Amount beneficially owned: 6814525"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

Sole dispositive power regulatory

"Sole power to dispose or to direct the disposition of: 6814525"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

Reporting Business Units regulatory

"beneficially owned by certain business units (collectively, the "Reporting Business Units")"

CUSIP technical

"CUSIP No.: 654484609"

A CUSIP is a nine-character alphanumeric code that uniquely identifies a U.S. or Canadian financial security—such as a stock, bond, or fund share—like a Social Security number for an investment. It matters to investors because brokers, exchanges and record-keepers use the CUSIP to match trades, track ownership, settle transactions and pull accurate records, reducing errors and ensuring money and securities go to the right place.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

NIOCORP DEVELOPMENTS LTD

(Name of Issuer)

Common Stock

(Title of Class of Securities)

654484609

(CUSIP Number)

03/31/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 654484609

1

Names of Reporting Persons

BlackRock, Inc.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 6,638,532.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 6,814,525.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

6,814,525.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

4.8 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: NIOCORP DEVELOPMENTS LTD
(b)	Address of issuer's principal executive offices: 7000 South Yosemite Street, Suite 115 Centennial CO 80112
Item 2.
(a)	Name of person filing: BlackRock, Inc. In accordance with SEC Release No. 34-39538 (January 12, 1998), this Schedule 13G reflects the securities beneficially owned, or deemed to be beneficially owned, by certain business units (collectively, the "Reporting Business Units") of BlackRock, Inc. and its subsidiaries and affiliates. It does not include securities, if any, beneficially owned by other business units whose beneficial ownership of securities are disaggregated from that of the Reporting Business Units in accordance with such release.
(b)	Address or principal business office or, if none, residence: BlackRock, Inc., 50 Hudson Yards New York, NY 10001
(c)	Citizenship: See Item 4 of Cover Page
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 654484609
Item 4.	Ownership
(a)	Amount beneficially owned: 6814525
(b)	Percent of class: 4.8 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 6638532
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 6814525
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. Various persons have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of the common stock of NIOCORP DEVELOPMENTS LTD. No one person's interest in the common stock of NIOCORP DEVELOPMENTS LTD is more than five percent of the total outstanding common shares.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. See Exhibit 99
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

BlackRock, Inc.

Signature:	Spencer Fleming
Name/Title:	Managing Director
Date:	04/27/2026

Exhibit Information

Exhibit 24: Power of Attorney Exhibit 99: Item 7

FAQ

What stake does BlackRock report in NioCorp (NB)?

BlackRock reports beneficial ownership of 6,814,525 shares, equal to 4.8% of NioCorp's common stock. The filing shows 6,638,532 shares with sole voting power as of the amendment.

Does this Schedule 13G/A indicate active control by BlackRock?

No. The filing is a Schedule 13G amendment reflecting aggregated holdings by Reporting Business Units. It does not state an intent to influence control and treats the position as passive under the form's rules.

Who signed the amendment and when was it filed?

The amendment was signed by Spencer Fleming, Managing Director and dated 04/27/2026. The cover page lists the issuer address and BlackRock's business address in New York.

What voting and dispositive powers does BlackRock report?

BlackRock reports 6,638,532 shares of sole voting power and 6,814,525 shares of sole dispositive power, with no shared voting or dispositive power listed in the filing.

Does the filing identify underlying accounts or subsidiaries?

The filing states holdings are aggregated across certain Reporting Business Units of BlackRock, and references Exhibit 99 for subsidiary identification and Exhibit 24 for power of attorney, without listing individual client accounts.