The removal of regulatory constraints (La Baja Reserve and Temporary Reserve Extension revocations) and the PTO approval significantly de-risk Soto Norte's path to environmental licensing. The next catalyst is the community engagement process in October 2026 and subsequent ESIA submission. Monitor for any community opposition or delays in the licensing timeline.
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Executive Summary
Aris Mining announced completion of the Environmental and Social Impact Assessment (ESIA) for its Soto Norte gold-copper project in Colombia and will commence community engagement in October 2026. The filing also details recent Colombian government actions that removed key regulatory constraints, including revocation of the La Baja Reserve and the Temporary Reserve Extension, which had created uncertainty around the project's permitting path. The technical mine plan (PTO) was approved by the National Mining Agency on July 29, 2026, but construction cannot begin until an environmental license is obtained.
Key Facts
- ESIA preparation completed; community engagement to launch in October 2026 in Matanza, Suratá and California municipalities.
- Colombia's Ministry revoked the La Baja Reserve (Resolution 1037, Aug 13, 2026) and the Temporary Reserve Extension (Resolution 1277, Sep 28, 2026), removing key regulatory constraints.
- The 2026 Páramo Partial Delimitation was revoked (Resolution 1278, Sep 28, 2026); Soto Norte is outside the Santurbán Páramo and its buffer zone.
- ANM approved the PTO (technical mine plan) for Soto Norte on July 29, 2026.
- Proven + probable mineral reserves: 20.3 Mt at 7.0 g/t Au, containing 4.6 Moz gold.
- Measured + indicated resources: 39.0 Mt at 5.55 g/t Au, containing 7.0 Moz gold.
- Initial 22-year mine life; 3,500 tpd mill capacity (750 tpd for local miners); average 203,000 oz Au/yr (263,000 oz/yr in years 2-10).
- Estimated US$2.6 billion in income taxes and US$393 million in royalties to Colombian government at US$2,600/oz gold.
Financial Impact
Soto Norte is a high-grade, long-life project with 4.6 Moz gold reserves and ~203,000 oz/yr average production. No current revenue from the project; it is pre-construction. The regulatory de-risking is material but the project still requires an environmental license before a construction decision.
Risk Factors
- Environmental license not yet obtained; community engagement could face opposition or delays.
- Project still requires a construction decision after license receipt; no timeline for that decision provided.
- Colombian regulatory and political environment remains subject to change; the Páramo delimitation process is ongoing.
- Forward-looking production and economic estimates are based on a 2025 PFS and are subject to execution risk.
Investment Themes
Documents Analyzed
This report is based on 5 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 6-K Filing (Primary) | 0001753926-26-001879 |
| Document: g085971_6k.htm | 0001753926-26-001879 |
| Document: 0001753926-26-001879-index-headers.html | 0001753926-26-001879 |
| Document: 0001753926-26-001879-index.html | 0001753926-26-001879 |
| Document: 0001753926-26-001879.txt | 0001753926-26-001879 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 21, 2026 5d ago | 6-K | $15.65 | awaiting T+5 | — | $16.13 (+3.04%) |
Oct 7, 2026 19d ago | 6-K | $16.76 $17.36 | ▲ +3.58% | ▲ +3.86% | $16.13 (−3.79%) |
Sep 30, 2026 27d ago | 6-K | $17.40 $17.03 | ▼ −2.13% | ▼ −4.04% | $16.13 (−7.33%) |
Sep 9, 2026 6w ago | 6-K | $20.13 $18.23 | ▼ −9.44% | ▼ −8.34% | $16.13 (−19.90%) |
Jun 11, 2026 19w ago | Institutional Cluster | $15.89 $16.62 | ▲ +4.59% | ▲ +3.92% | $16.13 (+1.48%) |
May 7, 2026 24w ago | 6-K | $19.70 $19.72 | ▲ +0.10% | ▼ −1.36% | $16.13 (−18.15%) |
May 7, 2026 24w ago | 6-K | $19.70 $19.72 | ▲ +0.10% | ▼ −1.36% | $16.13 (−18.15%) |
May 6, 2026 24w ago | 6-K | $19.01 $19.71 | ▲ +3.68% | ▲ +2.18% | $16.13 (−15.18%) |
May 6, 2026 24w ago | 6-K | $19.01 $19.71 | ▲ +3.68% | ▲ +2.18% | $16.13 (−15.18%) |
Apr 17, 2026 27w ago | 6-K | $20.96 $18.94 | ▼ −9.64% | ▼ −10.19% | $16.13 (−23.07%) |
US Market Status
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