Perpetua Resources Corp. announced that its wholly owned subsidiary, Perpetua Resources Idaho, Inc. has entered into an engineering, procurement, and construction management services agreement with Hatch Ltd. for the Stibnite Gold Project. Under the agreement, Hatch will provide design, engineering, procurement, construction management, testing, studies, and related services for defined portions of the project. The scope of services, to be finalized in February 2026, is expected to include the balance of the process plant, the pressure oxidation facility, associated on-site infrastructure, utilities, and facilities, as well as overall integration and execution support. The agreement does not constitute a construction contract, and Hatch will not assume responsibility for construction means, methods, or contractor safety beyond its coordination and oversight obligations. Certain project components are excluded from Hatch’s scope and will be managed by Perpetua Resources Idaho or other parties.