NioCorp Announces Closing of First Tranche of Private Placement for C$1 Million

NOT FOR DISTRIBUTION TO U.S. NEWSWIRES OR FOR DISSEMINATION IN THE UNITED STATES

CENTENNIAL, April 29, 2019 - NioCorp Developments Ltd. (“NioCorp” or the “Company”) (TSX:NB) (OTCQX:NIOBF) is pleased to announce that it has closed the first tranche (“First Tranche”) of its previously announced non-brokered private placement (the “Private Placement”) of units (the “Units”) of the Company. Under the First Tranche, a total of 1,666,664 Units were issued at a price per Unit of C$0.60, for total gross proceeds to the Company of approximately C$1 million.

The Company expects to close a second tranche of up to C$200,000 on or about May 6, 2019.

Each Unit issued pursuant to the First Tranche consists of one common share in the capital of the Company (a “Common Share”) and one-half of one Common Share purchase warrant (each whole warrant, a “Warrant”). Each Warrant entitles the holder thereof to purchase one additional Common Share at a price of C$0.72 until April 29, 2021.

Proceeds from the Private Placement will be used for working capital and general corporate purposes.

The Company paid cash commissions of C$29,999.95 in connection with the First Tranche to a broker outside of the United States. All of the securities sold pursuant to the First Tranche will be subject to a four month hold period, which will expire four months and one day from April 29, 2019.

This news release does not constitute an offer to sell or a solicitation of an offer to buy nor shall there be any sale of any of the securities in any jurisdiction in which such offer, solicitation or sale would be unlawful, including any of the securities in the United States of America. The securities have not been and will not be registered under the United States Securities Act of 1933, as amended (the “1933 Act”) or any state securities laws and may not be offered or sold within the United States or to, or for account or benefit of, U.S. Persons (as defined in Regulation S under the 1933 Act) unless registered under the 1933 Act and applicable state securities laws, or an exemption from such registration requirements is available.

For More Information:

Contact Jim Sims, VP of External Affairs, NioCorp Developments Ltd., 720-639-4650, jim.sims@niocorp.com

Source: NioCorp Developments Ltd.

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About NioCorp

NioCorp is developing a superalloy materials project in Southeast Nebraska with an aim to produce Niobium, Scandium, and Titanium. 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 also is 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.

Cautionary Note Regarding Forward-Looking Statements

Neither TSX nor its Regulation Services Provider (as that term is defined in the policies of the TSX) accepts responsibility for the adequacy or accuracy of this document. Certain statements contained in this document may constitute forward-looking statements, including but not limited to statements related to the anticipated closing of the second tranche and the use of proceeds of the Private Placement. Such forward-looking statements are based upon NioCorp’s reasonable expectations and business plan at the date hereof, which are subject to change depending on economic, political and competitive circumstances and contingencies. Readers are cautioned that such forward-looking statements involve known and unknown risks, uncertainties and other factors that may cause a change in such assumptions 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 changes in demand for and price of commodities (such as fuel and electricity) and currencies; 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 under the heading “Risk Factors” in the Company’s S-1 registration statement and other filings with 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.