Ioneer (INR) Registration filing summary

Company overview and business model

• Focuses on developing the Rhyolite Ridge lithium-boron mine and processing facility in Nevada, USA, with 100% project interest.

• Project aims to be a significant, low-cost global producer of lithium and boron, with updated economics supporting long-term, scalable operations.

• Federal permitting completed in October 2024, enabling advancement to mining and processing activities.

• Publicly traded on the Australian Securities Exchange (INR) and Nasdaq Capital Market (IONR) via ADSs.

Financial performance and metrics

• As of December 31, 2025, invested US$209 million in the Rhyolite Ridge Project.

• Secured a US$996 million loan from the U.S. Department of Energy in January 2025, including US$968 million principal and US$28 million capitalized interest, with a 20-year term.

Use of proceeds and capital allocation

• Net proceeds from securities sales will be used for general corporate purposes, with specific allocations to be detailed in future prospectus supplements.