Filed by NioCorp Developments Ltd.
Pursuant to Rule 425 under the Securities Act of 1933
and deemed filed pursuant to Rule 14a-12
under the Securities Exchange Act of 1934
Subject Company: GX Acquisition Corp II
Commission File No.: 001-40226
NioCorp
to Hold Special Meeting of Shareholders on March 10, 2023 Regarding its Proposed GXII Transaction
CENTENNIAL, Colo. (February 9, 2023) – NioCorp Developments
Ltd. (“NioCorp” or the “Company”) (TSX:NB) (OTCQX:NIOBF) today announced that it will
hold a Special Meeting of Shareholders on Friday, March 10, 2023, regarding its proposed business combination with GX Acquisition Corp
II (“GXII”) (Nasdaq: GXII).
NioCorp's Special Meeting of Shareholders will be held at 10:00
a.m., Mountain Time, at the Hilton Denver Inverness, 200 Inverness Drive West, Englewood, Colorado 80112. Concurrently, it was announced
that a Special Meeting of Stockholders of GXII will be held at 10:30 a.m. Eastern on Wednesday, March 15, 2023, via live webcast.
Details on the respective meetings and the matters to be voted
upon were filed yesterday with the U.S. Securities and Exchange Commission (“SEC”) and today on www.sedar.com.
# # #
FOR MORE INFORMATION:
Jim Sims, Corporate Communications Officer, NioCorp Developments
Ltd., 720-639-4650, jim.sims@niocorp.com
ABOUT NIOCORP
NioCorp is developing a critical minerals project in Southeast
Nebraska that will produce niobium, scandium, and titanium. The Company also is evaluating the potential to produce several rare earths
from the Project. Niobium is used to produce specialty alloys 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 specialty metal 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 lightweight alloys 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,
NioCorp Developments Ltd.,
7000 S. Yosemite, #115, Centennial CO 80112 | (720) 334-7066 | www.niocorp.com
Page 2 of 5
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.
Additional
Information about the Proposed Transaction and Where to Find It
In connection with the proposed transactions
contemplated by the Business Combination Agreement, dated September 25, 2022, among NioCorp, GXII and Big Red Merger Sub Ltd, (collectively,
the “Transaction”), NioCorp has filed a registration statement on Form S-4 (the “registration statement”) with
the SEC, which includes a document that serves as a prospectus and proxy circular of NioCorp and a proxy statement of GXII, referred to
as a “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 Transaction 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 Transaction, including any amendments or supplements to these documents, carefully and in
their entirety because they will contain important information about the proposed Transaction.
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 (if and when available) 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.
Participants
in the Solicitation
NioCorp, GXII and certain of their respective
directors, executive officers and other members of management and employees may, under SEC rules, be deemed to be participants in the
solicitation of proxies from NioCorp’s shareholders and GXII’s stockholders in connection with the proposed Transaction. Information
regarding the executive officers and directors of NioCorp is included in its management information and proxy circular for its 2021 annual
general meeting of shareholders filed with the SEC and the applicable Canadian securities regulatory authorities on October 22, 2021.
Information regarding the executive officers and directors of GXII is included in its Annual Report on Form 10-K for the year ended December
31, 2021, filed with the SEC on March
NioCorp Developments Ltd.,
7000 S. Yosemite, #115, Centennial CO 80112 | (720) 334-7066 | www.niocorp.com
Page 3 of 5
25, 2022. Additional information regarding the
persons who may be deemed to be participants in the solicitation, including information regarding their interests in the proposed Transaction,
are contained in the registration statement and the definitive joint proxy statement/prospectus. NioCorp’s shareholders and GXII’s
stockholders and other interested parties may obtain free copies of these documents free of charge by directing a written request to NioCorp
or GXII.
No
Offer or Solicitation
This communication and the information contained
herein do not constitute (i) (a) a solicitation of a proxy, consent or authorization with respect to any securities or in respect of the
proposed Transaction or (b) 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 U.S. 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 news release 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
This communication 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 Transaction, including NioCorp and GXII being able to receive all required regulatory, third-party and shareholder
approvals for the proposed Transaction; the anticipated benefits of the proposed Transaction, including the potential amount of cash that
may be available to the combined company upon consummation of the proposed Transaction and the use of the net proceeds following the redemptions
by GXII public shareholders; NioCorp’s expectation that its common shares will be accepted for listing on the Nasdaq Stock Market
following the closing of the proposed Transaction; the consummation of the convertible debenture transaction and the stand-by equity purchase
facility contemplated by the definitive agreements with YA II PN, Ltd., an investment fund managed by Yorkville Advisors Global, LP (together
with YA II PN, Ltd., “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 Developments Ltd.,
7000 S. Yosemite, #115, Centennial CO 80112 | (720) 334-7066 | www.niocorp.com
Page 4 of 5
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 egineering, 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 shareholder approvals for the proposed Transaction; the
amount of redemptions by GXII public shareholders; 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 Shares being greater than expected, which may reduce the cash in trust available
to NioCorp upon the consummation of the Transaction; 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 Transaction; the inability
to complete the proposed Transaction due to, among other things, the failure to obtain NioCorp shareholder approval or GXII shareholder
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 shareholder approval or regulatory approval;
the risk that the announcement and consummation of the proposed Transaction disrupts
NioCorp Developments Ltd.,
7000 S. Yosemite, #115, Centennial CO 80112 | (720) 334-7066 | www.niocorp.com
Page 5 of 5
NioCorp’s current plans; the ability to
recognize the anticipated benefits of the proposed Transaction; unexpected costs related to the proposed Transaction; the risks that the
consummation of the proposed Transaction 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 Transaction or other matters addressed in this communication 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 in this
communication. 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 of this communication to reflect the occurrence of unanticipated
events.
NioCorp Developments
Ltd., 7000 S. Yosemite, #115, Centennial CO 80112 | (720) 334-7066 | www.niocorp.com
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