NioCorp Announces $200 Million U.S. Shelf Registration

Establishing a Shelf Registration Gives NioCorp Necessary Flexibility Regarding Financing Options

CENTENNIAL, Nov. 2, 2021 - NioCorp Developments Ltd. ("NioCorp" or the "Company") (TSX:NB) (OTCQX:NIOBF) today announced the filing of a US $200 million shelf registration statement on Form S-3 (the "Shelf Registration Statement") with the U.S. Securities and Exchange Commission (the "SEC").

If and when declared effective by the SEC, the Shelf Registration Statement will allow the Company the flexibility from time to time to offer and sell up to $200 million of securities, including common stock, on a registered basis in the U.S. The specific securities and terms of each such future offering of securities, if any, along with the intended use of any net proceeds therefrom, would be described in detail under a separate prospectus supplement at the time of any such offering.

Mark A. Smith, NioCorp's CEO and Executive Chairman, said: "I think it is prudent to maintain flexibility so that NioCorp can access capital markets on a timely and efficient basis, which the Shelf Registration Statement will allow us to do if and when it is declared effective."

The Registration Statement relating to these securities has been filed with the SEC but has not yet become effective. These securities may not be sold nor may offers to buy be accepted prior to the time the Shelf Registration Statement becomes effective. Any offering of the securities covered by the Registration Statement will be made solely by means of a prospectus and an accompanying prospectus supplement relating to that offering. A copy of the prospectus included in the Shelf Registration Statement may be obtained on the SEC's website at www.sec.gov. This press release shall not constitute an offer to sell or the solicitation of an offer to buy, nor shall there be any offer for sale, or solicitation of an offer to buy, any of these securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction.

@NioCorp $NB.TO $NIOBF #ElkCreek #niobium #scandium #rareearth

For More Information:

Contact Jim Sims, VP of External Affairs, NioCorp Developments Ltd., 303-503-6203, jim.sims@niocorp.com

About NioCorp

NioCorp is developing a superalloy materials project in Southeast Nebraska that will produce Niobium, Scandium, and Titanium. Also under consideration by the Company is the production of several magnetic rare earth products. Niobium is used to produce superalloys as well as High Strength, Low Alloy ("HSLA") steel, which is a lighter, stronger steel used in automotive, structural, and pipeline applications. Scandium is a superalloy material that can be combined with Aluminum to make alloys with increased strength and improved corrosion resistance. Scandium is also a critical component of advanced solid oxide fuel cells. Titanium is used in various superalloys and is a key component of pigments used in paper, paint and plastics and is also used for aerospace applications, armor, and medical implants. Magnetic rare earths, such as Neodymium, Praseodymium, Terbium, and Dysprosium are critical to the making of Neodymium-Iron-Boron ("NdFeB") magnets, which are used across a wide variety of defense and civilian applications.

Cautionary Note Regarding Forward-Looking Statements

Certain statements contained in this news release may constitute forward-looking statements, including statements regarding the effectiveness of the Shelf Registration Statement and the flexibility it will allow NioCorp to access the capital markets, potential future securities offerings, and the Company's ability to produce Niobium, Scandium, Tiatanium and rare earths products at the Elk Creek Superalloy Materials Project. Forward-looking statements are based on estimates and assumptions made by the Company in light of its experience and its perception of historical trends, current conditions and expected future developments, as well as other factors that the Company believes are appropriate in the circumstances.. Readers are cautioned that such forward-looking statements involve known and unknown risks, uncertainties and other factors that may cause a change in such forward-looking statements and the actual outcomes and estimates to be materially different from those estimated or anticipated future results, achievements or position expressed or implied by those forward-looking statements. Risks, uncertainties and other factors that could cause NioCorp's plans or prospects to change include risks related to the Company's ability to operate as a going concern; risks related to the Company's requirement of significant additional capital; changes in demand for and price of commodities (such as fuel and electricity) and currencies; changes in economic valuations of the Project, such as Net Present Value calculations, changes or disruptions in the securities markets; legislative, political or economic developments; the need to obtain permits and comply with laws and regulations and other regulatory requirements; the possibility that actual results of work may differ from projections/expectations or may not realize the perceived potential of NioCorp's projects; risks of accidents, equipment breakdowns and labor disputes or other unanticipated difficulties or interruptions; the possibility of cost overruns or unanticipated expenses in development programs; operating or technical difficulties in connection with exploration, mining or development activities; the speculative nature of mineral exploration and development, including the risks of diminishing quantities of grades of reserves and resources; and the risks involved in the exploration, development and mining business and the risks set forth in the Company's filings with Canadian securities regulators at www.sedar.com and the SEC at www.sec.gov. NioCorp disclaims any intention or obligation to update or revise any forward-looking statements whether as a result of new information, future events, or otherwise.

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SOURCE NioCorp Developments Ltd.