In connection with the development of the mine portal and related infrastructure at the Elk Creek Project, ECRC has entered into the following construction and engineering contracts as of March 31, 2026:

In February 2026, ECRC entered into a unit-rate construction contract for portal development and earthworks with a not-to-exceed amount of approximately $19,472, with payments made only as work is completed. ECRC advanced $2,921 at contract inception, which will be applied as a credit against monthly invoices on a ratable basis over the life of the contract. As of March 31, 2026, $2,826 of the advance remains unapplied and is included in other assets on the consolidated balance sheet.

Also in connection with the portal development, ECRC entered into contracts for detailed engineering, slope stabilization and erosion control, project management and site supervision, and supply of steel arch structures for the mine portal. In aggregate, these contracts represent total commitments of approximately $13,389. As of March 31, 2026, $549 of work had been performed under these agreements.