DoD Defense Production Act support for Perpetua's Stibnite antimony project

U.S. Department of Defense

DoD release announcing the initial Defense Production Act Title III award to Perpetua Resources Idaho, Inc. for environmental and engineering work on the Stibnite Gold Project and identifying antimony trisulfide as the defense-relevant material.

Perpetua Resources Corp. / U.S. Securities and Exchange Commission (EDGAR)

Filed disclosure of the Technology Investment Agreement effective 16 December 2022. States that Perpetua Resources Idaho entered into an undefinitized TIA with DoD/Air Force Research Laboratory for up to $24.8 million under DPA Title III.

Perpetua Resources Corp. / U.S. Securities and Exchange Commission (EDGAR)

Filed disclosure that the DPA TIA was definitized at $24.8 million on 25 July 2023 and modified on 2 May 2024 with an additional $34.4 million, bringing the total to $59.2 million. Also reports reimbursements under the agreement.

Perpetua Resources Corp. / U.S. Securities and Exchange Commission (EDGAR)

Filing date 2026-08-14 independently verified against SEC EDGAR accession 0001104659-26-097134 index; 2026-06-30 is the period-end, not the publication date. Filed disclosure that all $59.2 million available under the DPA TIA had been disbursed and the agreement expired 16 June 2025; also records the OTIA's later additions to a current estimated $27.1 million and ongoing reimbursements. Separately describes the EXIM board-approved $2.9 billion senior secured loan as subject to definitive documentation and conditions precedent.

Perpetua Resources Corp.

Company project update stating that additional critical-path construction began 30 May 2026 and built on early-works construction that began in October 2025.