Item 8.01. Other Events.
On March 10, 2023, NioCorp issued a press release
(the “Press Release) announcing the approval by the shareholders of the proposals set forth above at the Special Meeting.
A copy of the Press Release is filed as Exhibit
99.1 to this Current Report on Form 8-K and is incorporated herein by reference.
Additional Information about the Proposed Transactions and Where
to Find It
In connection with the proposed business combination
between NioCorp and GXII pursuant to the Business Combination Agreement, NioCorp has filed a registration statement on Form S-4 (the “registration
statement”) with the SEC, which includes the Joint Proxy Statement/Prospectus. The definitive Joint Proxy Statement/Prospectus has
been filed with the SEC as part of the registration statement and, in the case of NioCorp, with the applicable Canadian securities regulatory
authorities, and will be sent to all NioCorp shareholders and GXII stockholders as of the applicable record date. Each of NioCorp and
GXII may also file other relevant documents regarding the proposed Transactions with the SEC and, in the case of NioCorp, with the applicable
Canadian securities regulatory authorities. BEFORE MAKING ANY VOTING OR INVESTMENT DECISION, INVESTORS AND SECURITY HOLDERS OF NIOCORP
AND GXII ARE URGED TO READ THE REGISTRATION STATEMENT, THE DEFINITIVE JOINT PROXY STATEMENT/PROSPECTUS AND ALL OTHER RELEVANT DOCUMENTS
FILED OR THAT WILL BE FILED WITH THE SEC AND, IN THE CASE OF NIOCORP, WITH THE APPLICABLE CANADIAN SECURITIES REGULATORY AUTHORITIES IN
CONNECTION WITH THE PROPOSED TRANSACTIONS, INCLUDING ANY AMENDMENTS OR SUPPLEMENTS TO THESE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY
BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTIONS.
Investors and security holders will be able to
obtain free copies of the registration statement and the definitive Joint Proxy Statement/Prospectus and all other relevant documents
that are filed or that will be filed with the SEC by NioCorp or GXII through the website maintained by the SEC at www.sec.gov. Investors
and security
holders will be able to obtain free copies of the definitive Joint
Proxy Statement/Prospectus and all other relevant documents that are filed or that will be filed with the applicable Canadian securities
regulatory authorities by NioCorp through the website maintained by the Canadian Securities Administrators at www.sedar.com. The documents
filed by NioCorp and GXII with the SEC and, in the case of NioCorp, with the applicable Canadian securities regulatory authorities also
may be obtained by contacting NioCorp at 7000 South Yosemite, Suite 115, Centennial CO 80112, or by calling (720) 639-4650; or GXII at
1325 Avenue of the Americas, 28th Floor, New York, NY 10019, or by calling (212) 616-3700.
No Offer or Solicitation
This Current Report on Form 8-K and the information
contained herein and therein do not constitute an offer to sell or the solicitation of an offer to buy any security, commodity or instrument
or related derivative, nor shall there be any sale of securities in any jurisdiction in which the offer, solicitation or sale would be
unlawful prior to the registration or qualification under the securities laws of any such jurisdiction or (ii) an offer or commitment
to lend, syndicate or arrange a financing, underwrite or purchase or act as an agent or advisor or in any other capacity with respect
to any transaction, or commit capital, or to participate in any trading strategies. No offer of securities in the United States or to
or for the account or benefit of U.S. persons (as defined in Regulation S under the Securities Act) shall be made except by means of a
prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended (the “Securities Act”), or an
exemption therefrom. Investors should consult with their counsel as to the applicable requirements for a purchaser to avail itself of
any exemption under the Securities Act. In Canada, no offering of securities shall be made except by means of a prospectus in accordance
with the requirements of applicable Canadian securities laws or an exemption therefrom. This communication is not, and under no circumstances
is it to be construed as, a prospectus, offering memorandum, an advertisement or a public offering in any province or territory of Canada.
In Canada, no prospectus has been filed with any securities commission or similar regulatory authority in respect of any of the securities
referred to herein.
Forward-Looking Statements Disclaimers
This Current Report on Form 8-K contains forward-looking
statements within the meaning of the United States Private Securities Litigation Reform Act of 1995 and forward-looking information within
the meaning of applicable Canadian securities laws. Forward-looking statements may include, but are not limited to, statements about the
parties’ ability to close the proposed Transactions, including NioCorp and GXII being able to receive all required regulatory, third-party
and GXII stockholder approvals for the proposed Transactions; the anticipated benefits of the proposed Transactions, including the potential
amount of cash that may be available to the combined company upon consummation of the proposed Transactions and the use of the net proceeds
following the redemptions by GXII public stockholders; NioCorp’s expectation that its Common Shares will be accepted for listing
on Nasdaq following the closing of the proposed Transactions; the consummation of the convertible debenture transaction and the stand-by
equity purchase facility contemplated by the definitive agreements with Yorkville; the financial and business performance of NioCorp;
NioCorp’s anticipated results and developments in the operations of NioCorp in future periods; NioCorp’s planned exploration
activities; the adequacy of NioCorp’s financial resources; NioCorp’s ability to secure sufficient project financing to complete
construction and commence operation of the Elk Creek Project; NioCorp’s expectation and ability to produce niobium, scandium and
titanium at the Elk Creek Project; the outcome of current recovery process improvement testing, and NioCorp’s expectation that such
process improvements could lead to greater efficiencies and cost savings in the Elk Creek Project; the Elk Creek Project’s ability
to produce multiple critical metals; the Elk Creek Project’s projected ore production and mining operations over its expected mine
life; the completion of the demonstration plant and technical and economic analyses on the potential addition of magnetic rare earth oxides
to NioCorp’s planned product suite; the exercise of options to purchase additional land parcels; the execution of contracts with
engineering, procurement and construction companies; NioCorp’s ongoing evaluation of the impact of inflation, supply chain issues
and geopolitical unrest on the Elk Creek Project’s economic model; the impact of health epidemics, including the COVID-19 pandemic,
on NioCorp’s business and the actions NioCorp may take in response thereto; and the creation of full time and contract construction
jobs over the construction period of the Elk Creek Project. Forward-looking statements are typically identified by words such as “plan,”
“believe,” “expect,” “anticipate,” “intend,” “outlook,” “estimate,”
“forecast,” “project,” “continue,” “could,” “may,” “might,” “possible,”
“potential,” “predict,” “should,” “would” and other similar words and expressions, but
the absence of these words does not mean that a statement is not forward-looking.
The forward-looking statements are based on the
current expectations of the management of NioCorp and GXII, as applicable, and are inherently subject to uncertainties and changes in
circumstances and their potential effects and speak only as of the date of such statement. There can be no assurance that future developments
will be those that have been anticipated. Forward-looking statements reflect material expectations and assumptions, including, without
limitation, expectations and assumptions relating to: the future price of metals; the stability of the financial and capital markets;
NioCorp and GXII being able to receive all required regulatory, third-party and GXII stockholder approvals for the proposed Transactions;
the amount of redemptions by GXII public stockholders; the consummation of the convertible debenture transaction and the stand-by equity
purchase facility contemplated by the definitive agreements with Yorkville; and other current estimates and assumptions regarding the
proposed Transaction and its benefits. Such expectations and assumptions are inherently subject to uncertainties and contingencies regarding
future events and, as such, are subject to change. Forward-looking statements involve a number of risks, uncertainties or other factors
that may cause actual results or performance to be materially different from those expressed or implied by these forward-looking statements.
These risks and uncertainties include, but are not limited to, those discussed and identified in public filings made by NioCorp and GXII
with the SEC and, in the case of NioCorp, with the applicable Canadian securities regulatory authorities and the following: the amount
of any redemptions by existing holders of GXII Class A common shares being greater than expected, which may reduce the cash in trust available
to NioCorp upon the consummation of the Transactions; the occurrence of any event, change or other circumstances that could give rise
to the termination of the Business Combination Agreement and/or payment of the termination fees; the outcome of any legal proceedings
that may be instituted against NioCorp or GXII following announcement of the Business Combination Agreement and the Transactions; the
inability to complete the proposed Transactions due to, among other things, the failure to obtain GXII stockholder approval or the consummation
of the convertible debenture transaction and the stand-by equity purchase facility contemplated by the definitive agreements with Yorkville;
the inability to complete the convertible debenture transaction and the stand-by equity purchase facility contemplated by the definitive
agreements with Yorkville due to, among other things, the failure to obtain regulatory approval; the risk that the announcement and consummation
of the proposed Transactions disrupt NioCorp’s current plans; the ability to recognize the anticipated benefits of the proposed
Transactions; unexpected costs related to the proposed Transactions; the risks that the consummation of the proposed Transactions is substantially
delayed or does not occur, including prior to the date on which GXII is required to liquidate under the terms of its charter documents;
NioCorp’s ability to operate as a going concern; NioCorp’s requirement of significant additional capital; NioCorp’s
limited operating history; NioCorp’s history of losses; cost increases for NioCorp’s exploration and, if warranted, development
projects; a disruption in, or failure of, NioCorp’s information technology systems, including those related to cybersecurity; equipment
and supply shortages; current and future offtake agreements, joint ventures, and partnerships; NioCorp’s ability to attract qualified
management; the effects of the COVID-19 pandemic or other global health crises on NioCorp’s business plans, financial condition
and liquidity; estimates of mineral resources and reserves; mineral exploration and production activities; feasibility study results;
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; claims on the title to NioCorp’s properties; potential future litigation;
and NioCorp’s lack of insurance covering all of NioCorp’s operations.
Should one or more of these risks or uncertainties
materialize or should any of the assumptions made by the management of NioCorp and GXII prove incorrect, actual results may vary in material
respects from those projected in these forward-looking statements.
All subsequent written and oral forward-looking
statements concerning the proposed Transactions or other matters addressed herein and attributable to NioCorp, GXII or any person acting
on their behalf are expressly qualified in their entirety by the cautionary statements contained or referred to herein. Except to the
extent required by applicable law or regulation, NioCorp and GXII undertake no obligation to update these forward-looking statements to
reflect events or circumstances after the date hereof to reflect the occurrence of unanticipated events.