The Export-Import Bank of the United States has notified Congress of a proposed $2.7 billion loan for Perpetua Resources' Stibnite project in central Idaho, moving the antimony and gold development into the final phase of approval for federal financing.
The proposed package is significant because Stibnite hosts what Perpetua has described as the largest antimony reserve outside Chinese and Russian control, positioning the Idaho project as a potentially strategic domestic source of a mineral used in defense applications and energy storage.
Perpetua Resources, which trades on Nasdaq under the ticker PPTA, said the congressional notification marks the last step in the U.S. EXIM approval process before a final board decision. Chief Executive Officer Jon Cherry said the company expects to make a final investment decision later this year.
Shares of Perpetua rose more than 8% following the announcement, reflecting investor optimism that the long-developing project could secure a major federal financing commitment as the United States pushes to strengthen critical minerals supply chains.
Why the loan matters
The proposed $2.7 billion loan would provide a substantial financing backbone for a project that has drawn interest from U.S. policymakers because of antimony's role in military systems, flame retardants, and some battery technologies.
China and Russia have long held dominant positions in antimony supply, making alternative production sources strategically important for Washington and for manufacturers seeking more secure procurement channels.
For Idaho and the broader U.S. mining sector, the move signals continued federal support for large-scale critical minerals projects that align with industrial policy, defense priorities, and energy transition supply chain goals.
Project snapshot
| Item | Detail |
|---|---|
| Company | Perpetua Resources (NASDAQ: PPTA) |
| Project | Stibnite Gold Project |
| Location | Central Idaho, United States |
| Proposed U.S. EXIM financing | $2.7 billion |
| Key mineral | Antimony |
| Strategic relevance | Largest antimony deposit outside Chinese and Russian control |
| Next milestone | Final U.S. EXIM approval and final investment decision later in 2026 |
What comes next
Congressional notification does not itself complete the loan process, but it is a required final-stage step before U.S. EXIM can move toward approval.
A final investment decision will remain a key milestone for Perpetua as it works through financing, permitting, and construction planning. The project has been closely watched by mining investors and policymakers because it sits at the intersection of domestic resource development, supply chain security, and U.S. critical minerals strategy.
If approved and built, Stibnite could become one of the most important U.S. antimony projects in decades, offering a potential new supply source at a time when governments and industry are reassessing reliance on concentrated foreign production.
Key risks to watch
Despite the financing momentum, the project still faces execution risk typical of large-scale mine developments, including final approvals, construction cost control, timeline management, and broader commodity market conditions.
Permitting, environmental scrutiny, and stakeholder engagement are also likely to remain in focus given the project's scale and location in Idaho.
Social snippet
LinkedIn/X: U.S. EXIM has notified Congress of a proposed $2.7 billion loan for Perpetua Resources' Stibnite project in Idaho, a major step for one of the most strategically watched antimony projects in the U.S. Perpetua said the project hosts the largest antimony deposit outside Chinese and Russian control, and shares rose more than 8% on the news. #Antimony #CriticalMinerals #Mining #Idaho #PPTA
