The July 2025 Offering

On July 18, 2025, the Company closed a public offering (the “July 2025 Offering”), pursuant to which the Company issued and sold 13,850,000 Common Shares at a public offering price of $3.25 per Common Share, for net proceeds of approximately $41,762 after deducting placement agent fees discounts and prior to other offering expenses. Maxim

acted as sole placement agent for the July 2025 Offering. The Company intends to use the net proceeds from the July 2025 Offering for working capital and general corporate purposes, including to advance its efforts to launch construction of the Elk Creek Project and move it to commercial operation.

Other Common Share Issuances

During the period from July 1, 2025 through September 11, 2025, the Company issued 5,000,312 Common Shares through the exercise of Warrants and Options by their holders and received cash totaling approximately $10,401. In addition, 415,581 Vested Shares were exchanged for an equivalent number of Common Shares.

Purchases of Land

On August 1, 2025, ECRC closed on its option to purchase three parcels of land in Johnson County, Nebraska (the “Property”), pursuant to the terms of the Option to Purchase, dated as of December 4, 2009, as amended, and the Option to Purchase, dated December 4, 2014, as amended, each between Roger and Nancy Woltemath (the “Owners”) and ECRC (together, the “Option Agreements”). Pursuant to the terms of the Option Agreements, the Owners sold, transferred, conveyed and assigned to ECRC all of their rights, privileges, title and interest in and to the surface rights with respect to one of the parcels (consisting of the property known as Woltemath80S) and to the surface rights and associated mineral rights with respect to the other two parcels (consisting of approximately 1.66 acres of the property known as Woltemath002).

The Option Agreements provided for a purchase price calculated based on the appraised value per acre of the parcels of land. The aggregate purchase price was approximately $2,700.

DoD Agreement

On August 4, 2025, ECRC entered into a Project Sub-Agreement (the “DoD Agreement”) with Advanced Technology International (“ATI”), an entity acting on behalf of the Defense Industrial Base Consortium under the authority of the U.S. Department of Defense (“DoD”). Subject to the terms and conditions of the DoD Agreement, ECRC is entitled to receive up to an aggregate of approximately $10.0 million of reimbursement payments from the DoD upon the achievement of certain project milestones related to feasibility study-level engineering and additional reserve drilling, as well as preparing updated cost estimates, for the Elk Creek Project.