NioCorp (Nasdaq: NIOBW) details S-3 exhibits and placement pact

Rhea-AI Filing Summary

NioCorp Developments Ltd. filed a current report to attach key legal documents related to its Registration Statement on Form S-3. The filing lists a Placement Agency Agreement dated September 17, 2025 between NioCorp and Maxim Group LLC, along with a legal opinion and related consent from Blake, Cassels & Graydon LLP. These exhibits provide the contractual and legal framework supporting NioCorp’s previously filed shelf registration.

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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)
of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): September 19, 2025

NioCorp Developments Ltd.

(Exact name of registrant as specified in its charter)

British Columbia, Canada
(State or other jurisdiction
of incorporation) 001-41655
(Commission File Number) 98-1262185
(IRS Employer
Identification No.)

7000 South Yosemite Street, Suite 115
Centennial, Colorado 80112
(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code: (720) 334-7066

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Shares, without par value	NB	The Nasdaq Stock Market LLC
Warrants, each exercisable for 1.11829212 Common Shares	NIOBW	The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

 Emerging growth company          ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 8.01 Other Events.

NioCorp Developments Ltd. is filing herewith the following exhibits to its Registration Statement on Form S-3 (File No. 333-280176):

1. Placement Agency Agreement, dated as of September 17, 2025, by and between NioCorp Developments Ltd. and Maxim Group LLC; and

2. Opinion and Consent of Blake, Cassels & Graydon LLP.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

Exhibit Number	Description
1.1	Placement Agency Agreement, dated as of September 17, 2025, by and between NioCorp Developments Ltd. and Maxim Group LLC
5.1	Opinion of Blake, Cassels & Graydon LLP
23.1	Consent of Blake, Cassels & Graydon LLP (included in Exhibit 5.1)
104	Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	NIOCORP DEVELOPMENTS LTD.
Dated: September 19, 2025	By:	/s/ Neal S. Shah
	Name:	Neal S. Shah
	Title:	Chief Financial Officer

FAQ

What did NioCorp Developments Ltd. (NIOBW) report in this 8-K?

NioCorp Developments Ltd. reported that it is filing several exhibits related to its Registration Statement on Form S-3, including a placement agency agreement and legal opinion documents.

Which key agreement is included in NioCorp’s latest filing?

The filing includes a Placement Agency Agreement dated September 17, 2025, between NioCorp Developments Ltd. and Maxim Group LLC.

What legal opinion is attached to the NioCorp (NIOBW) 8-K?

The report attaches an opinion of Blake, Cassels & Graydon LLP as an exhibit, together with that firm’s consent included within the opinion exhibit.

How is the Form S-3 registration referenced in this NioCorp filing?

NioCorp states that it is filing the listed exhibits to its Registration Statement on Form S-3, identified as File No. 333-280176.

Which exchange lists NioCorp’s common shares and warrants?

NioCorp’s common shares without par value (symbol NB) and its warrants (symbol NIOBW) are listed on The Nasdaq Stock Market LLC.

Who signed the 8-K for NioCorp Developments Ltd.?

The report was signed on behalf of NioCorp Developments Ltd. by Neal S. Shah, who is identified as the company’s Chief Financial Officer.