Disclaimers

This website of NioCorp Developments Ltd. (“NioCorp”) 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 (collectively, “forward-looking statements”). Forward-looking statements may include, but are not limited to, statements related to the expected economics for the Elk Creek Project, including NPV, IRR, payback period, CAPEX, gross revenue, gross margin, EBITDA, operating cost and effective tax rate; future commodity price volatility and any possible reductions thereto; NioCorp’s expectation that the Elk Creek Project will have over a 40-year mine life; statements regarding NioCorp’s Mineral Resource and Mineral Reserve estimates; NioCorp’s expectations related to the development timeline of 35 months; NioCorp’s expectation that the integrated mine and processing plan will reduce U.S. import reliance; effects on and benefits to the U.S. derived from NioCorp’s future operations; NioCorp’s expectation that a diversified revenue stream will reduce exposure to market concentration, export controls and pricing volatility associated with China-dominated supply chains; statements related to expected pricing for niobium, scandium, titanium and the rare earth products; statements regarding NioCorp’s debt financing application process with EXIM; NioCorp’s expectation of producing niobium, scandium, titanium and the rare earth products at the Elk Creek Project, including estimated production totals; NioCorp’s confidence in and ability to secure sufficient project financing to complete construction of the Elk Creek Project and move it to commercial operation, as well as efforts and expenditures relating to the same; statements that demand for niobium, scandium, titanium and the rare earth products is expanding across several high-growth sectors; statements that NioCorp expects to produce its products in the United States; statements related to the expected design of the mine, including the mine portal, Railveyor™ system and behind-the-meter microgrid for electricity, as well as the expectation that these will improve project execution and operating efficiency; and trends in global geopolitics and their effects on NioCorp’s operations. In addition, any statements that refer to projections, forecasts or other characterizations of future events or circumstances, including any underlying assumptions, are forward-looking statements. 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 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: NioCorp’s ability to receive sufficient project financing for the construction of the Elk Creek Project on acceptable terms, or at all; the future price of and demand for metals, including Al-Sc alloy; the impact that Chinese restrictions have on pricing and demand, including the existence of a bifurcated market between China and the rest of the world; and the stability of the financial and capital markets.

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 with the Securities and Exchange Commission (the “SEC”) and with the applicable Canadian securities regulatory authorities, as well as those risks identified in the 2026 NI 43-101 Technical Report, and the following: NioCorp’s requirement of significant additional capital; NioCorp’s ability to receive sufficient project financing for the construction of the Elk Creek Project on acceptable terms, or at all; NioCorp’s ability to achieve the required milestones and receive the full $10.0 million in reimbursement under the Project Sub-Agreement with Advanced Technology International, an entity acting on behalf of the Defense Industrial Base Consortium under the authority of the U.S. Department of War; NioCorp’s ability to receive a final commitment of financing from EXIM or other debt financing or financial support on acceptable timelines, on acceptable terms, or at all; NioCorp’s ability to continue to meet the listing standards of The Nasdaq Stock Market LLC; risks relating to NioCorp’s common shares, including price volatility, lack of dividend payments and dilution or the perception of the likelihood of any of the foregoing; the extent to which NioCorp’s level of indebtedness and/or the terms contained in agreements governing NioCorp’s indebtedness, if any, or other agreements may impair NioCorp’s ability to obtain additional financing, on acceptable terms, or at all; covenants contained in agreements with NioCorp’s secured creditors that may affect its assets; NioCorp’s limited operating history; NioCorp’s history of losses; the material weaknesses in NioCorp’s internal control over financial reporting, NioCorp’s efforts to remediate such material weaknesses and the timing of remediation; the possibility that NioCorp may qualify as a passive foreign investment company under the U.S. Internal Revenue Code of 1986, as amended (the “Code”); the potential that the business combination with GX Acquisition Corp. II and other related transactions could result in NioCorp becoming subject to materially adverse U.S. federal income tax consequences as a result of the application of Section 7874 and related sections of the Code; changes in tax laws and regulations; 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; variations in the market demand for, and prices of, niobium, scandium, titanium and rare earth products, including a reduction of demand for scandium from a downturn in capital spending for artificial intelligence; impacts on the markets and pricing for scandium and rare earth products from the Chinese-based markets, including any future changes to export restrictions; current and future offtake agreements, joint ventures, and partnerships, including NioCorp’s ability to negotiate extensions to existing agreements or to enter into new agreements, on favorable terms or at all; NioCorp’s ability to attract qualified management; estimates of mineral resources and reserves; mineral exploration and production activities; feasibility study results; the results of metallurgical testing; the results of technological research; unexpected variations in the quantity of ore, grade or recovery rates, or the presence of deleterious elements that would affect the process plant or waste removal; unexpected geotechnical and hydrogeological conditions from what was assumed in the mine designs; changes in demand for and price of commodities (such as fuel and electricity) and currencies; competition in the mining industry; changes or disruptions in the securities markets; legislative, political or economic developments, including changes in federal and/or state laws that may significantly affect the mining and scandium alloy industries; trade policies and tensions, including tariffs and other export controls; inflationary pressures; the impacts of climate change, as well as actions taken or required by governments related to strengthening resilience in the face of potential impacts from climate change; changes in other environmental and social factors; the need to obtain permits and comply with laws and regulations and other regulatory requirements; the timing and reliability of sampling and assay data; 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, development or scandium alloy production activities; management of the water balance at the Elk Creek Project site; land reclamation requirements related to the Elk Creek Project; 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; the infringement or loss of NioCorp’s intellectual property rights; potential future litigation; NioCorp’s lack of insurance covering all of NioCorp’s operations; and changes in operating and capital costs, exchange rates, metallurgical performance, labor availability and other risk associated with the mining industry.

Should one or more of these risks or uncertainties materialize or should any of the assumptions made by the management of NioCorp 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 matters addressed on this website and attributable to NioCorp or any person acting on its behalf are expressly qualified in their entirety by the cautionary statements contained or referred to on this website. Except to the extent required by applicable law or regulation, NioCorp undertakes no obligation to update these forward-looking statements to reflect events or circumstances after the date of this website to reflect the occurrence of unanticipated events.