Aldebaran Resources Inc.
Aldebaran Resources is advancing the Altar copper-gold project (80% owned, Sibanye-Stillwater 20%) in San Juan, Argentina, following an Oct 2025 PEA (48-year mine life, NPV8% US$2.0 billion, IRR 20.5%). The Nuton/Rio Tinto option was TERMINATED Nov 2025 and should not be reported as active; a poison pill was adopted Mar 2026; non-Altar Argentine assets were spun out into Centauri Minerals mid-2026. Cash of CAD $49.4 million (Mar 31 2026); debt-free.
Notable vs. Peers
- Jurisdiction risk score of 5/10 is meaningfully riskier than the peer average of 7.6/10.
Lifecycle Milestones
A relative ranking of how closely this company matches the profile of juniors that have actually been acquired — not a probability, and not a reason to buy. Acquisitions are rare: only a few dozen significant deals happen a year across a universe of thousands of juniors, so even a high score here describes a long shot. The strongest signal the underlying research identifies — whether a major already holds a JV, earn-in, or 5–19.9% strategic stake — isn't tracked yet and is absent from this score.
Your Rankings
Management Team
Chief Executive Officer and Director of Regulus Resources Inc. Economic geologist with more than 30 years' exploration experience across multiple continents.
Chief Geological Officer of Regulus Resources Inc. (Dr.) Economic geologist with 40 years' field experience in North and South America; a founding member of Regulus.
Chief Financial Officer and Director of Regulus Resources Inc. Co-founder of the company; holds a law degree and a CFA designation; previously founded AltaFund Investment Corp.
Senior Vice President, Corporate Development of Regulus Resources Inc. Professional geologist with over 15 years' experience in corporate development; formerly at Yamana Gold.
Vice President and Country Manager, Argentina of Aldebaran Resources Inc., promoted from Country Manager, Argentina. Argentine geologist with over 20 years of mining industry experience; joined Antares Minerals in 2004 and was project manager for the Rio Grande and Haquira projects. Holds an MBA from IAE Business School and a B.Sc. from the National University of San Juan.
Vice President Project Development of Aldebaran Resources Inc. Geological engineer with over 28 years combining exploration with operational and technical roles. Holds a B.Sc. from the Montana College of Mineral Science & Technology (1991). Previously Director of Corporate Development at Sibanye-Stillwater, with nearly 18 years at underground PGM operations.
Corporate Secretary of Regulus Resources Inc. 30 years' experience providing regulatory and management services to public companies.
Manager, Investor Relations of Regulus Resources Inc. Over nine years' experience working in Latin America in the mining and energy sectors; fluent in Spanish and Portuguese.
Insiders, Investors & Smart Money
Notable shareholders and insiders whose involvement is worth knowing about, plus what we're seeing from institutional/large-investor activity.
Two very different kinds of informed money are in this one. South32, a global diversified producer, put cash in twice -- C$10.3M for 9.9% in July 2022, then more in the August 2023 financing to reach about 14.8% -- and now holds 13.57% per the company's own share-structure page (31 July 2026), with anti-dilution rights and the right to nominate a director above 12.5%. Separately, Route One Investment Company, a US San Francisco value fund, is the largest shareholder at 41.22% and has kept adding: a 2023 warrant exercise, 9.7 million shares at $0.88 in September 2023, and another 1,538,462 shares at $3.25 in the February 2026 placement. Management and technical staff have bought alongside them repeatedly, and no insider has ever sold.
No notable insiders tracked for this miner yet.
Reports, Presentations & Documents
We haven't parsed this company's PEA/PFS/FS recommendations yet — cut-off grade, mine life, DCF/NPV, and the report's own next-steps guidance are a planned research pass, not live data for every company yet.
Altar Project (80% Aldebaran / 20% Sibanye-Stillwater) PEA: after-tax NPV8% of US$2.0B and IRR of 20.5% at a base case of $4.35/lb copper, $2,500/oz gold, $27/oz silver, over a 48-year mine life (incl. 3 years construction). Rises to US$3.34B NPV / 28% IRR at spot prices. Resource: 22.01B lbs Cu + 5.08 Moz Au + 93.76 Moz Ag Measured+Indicated (2024 pit-constrained estimate), plus a large Inferred component. Nuton/Rio Tinto option terminated Nov 2025.