NioCorp Announces Pricing of $150.2 Million Registered Direct Offering of Common Shares Priced At-the-Market

CENTENNIAL, CO / ACCESS Newswire / October 13, 2025 / NioCorp Developments Ltd. ("NioCorp" or the "Company") (Nasdaq:NB) today announced the pricing of a registered direct offering in the United States priced at-the-market in accordance with the rules of The Nasdaq Stock Market LLC (the "Offering"). The Offering is expected to consist of up to 16,077,175 common shares (or pre-funded warrants in lieu thereof) at an offering price of $9.34 per common share, for gross proceeds that are expected to be approximately $150.2 million before deducting placement agent fees and offering expenses.

Maxim Group LLC is acting as sole placement agent for the Offering.

NioCorp currently intends to use the net proceeds from the Offering for working capital and general corporate purposes, including to advance its efforts to launch construction of the Elk Creek Project and move it to commercial operation. The Offering is expected to close on or about October 15, 2025, subject to the satisfaction of customary closing conditions.

The Offering is being made pursuant to an effective shelf registration statement on Form S-3ASR (File No. 333-290837) previously filed with the Securities and Exchange Commission (the "SEC") on October 10, 2025 that became effective upon filing pursuant to Rule 462(e) of the United States Securities Act of 1933, as amended. A prospectus supplement relating to the securities to be issued in the Offering will be filed by the Company with the SEC. When available, copies of the prospectus supplement relating to the Offering, together with the accompanying prospectus, can be obtained at the SEC's website at www.sec.gov or by contacting Maxim Group LLC, at 300 Park Avenue, 16th Floor, New York, NY 10022, Attention: Syndicate Department, or via email at [e-mail] or by telephone at [phone]. The prospectus supplement to be filed with the SEC will also be available on the Company's profile on the SEDAR+ website at www.sedarplus.ca NioCorp may offer and sell securities in both the United States and other jurisdictions outside of Canada. No securities will be offered or sold to Canadian purchasers under the Offering.