NioCorp Developments Ltd.

NioCorp is developing the Elk Creek Project located in southeast Nebraska. The “Elk Creek Project” is a development-stage property that has disclosed niobium, scandium, and titanium reserves and resources and disclosed rare earth mineral resources. The Company is continuing technical and economic studies around the rare earths contained in the Elk Creek Project’s mineral resource in order to determine whether extraction of rare earth elements can be reasonably justified and economically viable after taking into account all relevant factors. Niobium has developing applications in the formulation of solid-state lithium-ion batteries, which may reduce charging times and increase battery safety. Niobium is used to produce various superalloys that are extensively used in high performance aircraft and jet turbines. It also is used in high-strength, low-alloy steel, a stronger steel used in automobiles, bridges, structural systems, buildings, pipelines, and other applications that generally increases strength and/or reduces weight, which can result in environmental benefits, including reduced fuel consumption and material usage and fewer air emissions. Scandium can be combined with aluminum to make high-performance alloys with increased strength and improved corrosion resistance. Scandium also is a critical component of advanced solid oxide fuel cells, an environmentally preferred technology for high-reliability, distributed electricity generation. Titanium is a component of various

Current securities

1. 4 filingJul 8, 2026
2. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory ArrangementsJul 8, 2026
3. 10-Q filingMay 14, 2026
4. 8-A12B/A filingApr 6, 2026
5. Entry into a Material Definitive Agreement · Material Modification to Rights of Security Holders · Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements · Submission of Matters to a Vote of Security HoldersApr 6, 2026