202620 releases
Aldebaran Reports 1,728.9 m of 0.45% CuEq (0.41% Cu, 0.03 g/t Au & 1.34 g/t Ag), including 756 m of 0.68% CuEq (0.61% Cu, 0.03 g/t Au & 2.12 g/t Ag) at the Altar Copper-Gold Project in San Juan, Argentina
Hole ALD-26-260 at the Altar copper-gold project in San Juan, Argentina returned 1,728.90 m of 0.45% CuEq (0.41% Cu, 0.03 g/t Au, 1.34 g/t Ag) from 141.00 m, including 756.00 m of 0.68% CuEq from 965.00 m. Other holes returned 918.80 m of 0.62% CuEq, 901.00 m of 0.47% CuEq, 940.70 m of 0.49% CuEq and 841.90 m of 0.54% CuEq; three holes had no reportable intervals. These are the final results from the 2025-2026 infill and geotechnical program, feeding a 2026 resource update and a pre-feasibility study scheduled for 2027.
Drill resultsAldebaran Reports 513 m of 1.06% CuEq (1.01% Cu, 0.08 g/t Au & 3.58 g/t Ag), Within 1,257.30 m of 0.66% CuEq (0.62% Cu, 0.05 g/t Au & 1.94 g/t Ag) at the Altar Copper-Gold Project in San Juan, Argentina
Drilling at the Altar copper-gold project in San Juan, Argentina returned 1,257.30 m of 0.66% CuEq (0.62% Cu, 0.05 g/t Au, 1.94 g/t Ag) from 135.70 m in hole ALD-26-267, including 513 m of 1.06% CuEq and 214 m of 1.57% CuEq. Other holes returned 1,323.20 m of 0.50% CuEq, 939.30 m of 0.58% CuEq, 1,354 m of 0.41% CuEq and 1,336 m of 0.38% CuEq. Assay delays push the updated resource estimate to October 2026; the pre-feasibility study remains Q2/Q3 2027.
Drill resultsAldebaran Resources and Centauri Minerals Announce Completion of Spin-Out Transactions
The plan of arrangement spinning out Centauri Minerals from Aldebaran Resources closed effective 12:01 a.m. Calgary time on August 27, 2026, with 18,544,058 Centauri shares distributed to Aldebaran shareholders of record August 26, 2026, each Aldebaran share exchanged for one new Aldebaran share and 0.10 of a Centauri share. Centauri shares are listed on the TSX-V under CENT, with trading expected to resume August 31, 2026. Centauri's $25,486,000 subscription receipt financing converted into 25,486,000 shares, leaving 76,866,001 shares outstanding, 27.9% held by Aldebaran.
AcquisitionAldebaran Resources and Centauri Minerals Announce Final Approval of Centauri’s Listing on the TSX Venture Exchange
Centauri Minerals Inc. has received final TSX Venture Exchange approval to list its common shares under the symbol CENT, and has filed its Form 2B Listing Application on SEDAR+. The shares will be listed and immediately halted on August 26, 2026 pending closing of the previously announced plan of arrangement, expected on August 27, 2026, under which Aldebaran shareholders of record at the close of business on August 26, 2026 receive one new Aldebaran share and 0.10 of a Centauri share per Aldebaran share. Trading in Centauri shares is expected to begin August 31, 2026.
CorporateAldebaran Resources and Centauri Minerals Announce Shareholder Approval and Receipt of Final Order for Spin-Out of Centauri Minerals
Aldebaran shareholders approved the plan of arrangement to spin out subsidiary Centauri Minerals Inc. by special resolution at the August 7, 2026 annual and special meeting, and the Court of King's Bench of Alberta has granted the final order. Under the arrangement, Aldebaran will distribute approximately 18,535,783 Centauri common shares to shareholders on a one-for-ten basis. Closing is expected before the end of August 2026, subject to conditions including TSX Venture Exchange listing approval for the Centauri shares.
AcquisitionAldebaran Resources and Centauri Minerals Announce Closing of $25 million Subscription Receipt Financing in Connection with Centauri Spin-Out
Centauri Minerals Inc., Aldebaran's majority-owned subsidiary, closed an offering of subscription receipts at C$1.00 each for aggregate gross proceeds of $25,486,000, comprising a $17,486,000 brokered private placement of 17,486,000 subscription receipts led by TD Securities and an $8,000,000 non-brokered placement of 8,000,000 receipts. Proceeds are held in escrow pending conditions including completion of the previously announced spin-out arrangement, with each receipt converting to 1.1 common shares if conditions are not met by September 30, 2026. Funds are earmarked for the Rio Grande gold-copper project in Salta, Argentina, other portfolio assets and general corporate purposes.
FinancingAldebaran Resources and Centauri Minerals Announce C$17 MM Brokered and Concurrent C$8 MM Non-Brokered Private Placements by Centauri
Centauri Minerals, majority-owned by Aldebaran, has agreed with TD Securities to sell up to 17,000,000 subscription receipts at C$1.00 each for up to C$17,000,000 on a best-efforts brokered basis, plus a concurrent non-brokered placement of up to 8,000,000 subscription receipts for up to C$8,000,000, with an agents' option for a further C$3,000,000. Proceeds will fund the previously announced spin-out arrangement and exploration at the Rio Grande gold-copper project in Salta, Argentina. Brokered closing is expected the week of July 20, 2026.
FinancingSpin-Out from Aldebaran: Centauri Minerals Announces Approval of Drilling Permit for the Rio Grande Gold-Copper Project and Team Additions
The Government of Salta Province has approved a drilling permit for the Rio Grande gold-copper project in Salta, Argentina, held by Centauri Minerals Inc., a private company majority owned by Aldebaran Resources and spun out of it. Centauri has begun exploration targeting and mobilization, with a higher-power magnetotellurics survey expected to start in the third quarter of 2026 and the first drill holes since 2013 planned for the second half of 2026. Centauri also appointed Ignacio Butler as Development and Sustainability Manager, Dario Gonzalez as Exploration Manager, and Amalia Sáenz and Christopher Stackhouse as independent directors.
AcquisitionAldebaran Announces Execution of Arrangement Agreement for Spin-Out of Centauri Minerals Inc.
An arrangement agreement dated June 1, 2026 has been signed with Centauri Minerals Inc., a majority owned subsidiary, to spin out approximately 18,535,783 Centauri common shares to Aldebaran shareholders on a one-for-ten basis. Centauri holds the Rio Grande gold-copper project in Salta, Argentina. The shareholder meeting is expected on August 7, 2026, with completion on or about August 13, 2026; approvals required include 66⅔% shareholder support, the Court of King's Bench of Alberta and the TSXV, plus a Centauri TSXV listing.
AcquisitionAldebaran Reports 1,339.30 m of 0.45% CuEq (0.38% Cu, 0.14 g/t Au & 2.54 g/t Ag) including 500 m of 0.71% CuEq (0.58% Cu, 0.35 g/t Au & 1.42 g/t Ag)at the Altar Copper-Gold Project in San Juan, Argentina
Infill drilling at the Altar copper-gold project in San Juan, Argentina returned 1,339.30 m of 0.45% CuEq from 12 m depth in hole ALD-26-173EXT, including 500 m of 0.71% CuEq from 326 m; other holes included 1,059.20 m of 0.51% CuEq, 1,198.00 m of 0.43% CuEq and 826.10 m of 0.54% CuEq with 98 m of 1.07% CuEq. The seven holes aimed to upgrade Inferred resource blocks to Measured and Indicated. An updated resource estimate incorporating more than 40,000 m of drilling is expected in Q3 2026, with a Pre-Feasibility Study in Q2/Q3 2027.
Drill resultsAldebaran and Centauri File Mineral Resource Update on the Rio Grande Gold-Copper Project on SEDAR+
An updated NI 43-101 Technical Report and Mineral Resource Estimate for the Rio Grande gold-copper project in Salta, Argentina has been filed on SEDAR+ by Aldebaran Resources and Centauri Minerals. The estimate has an effective date of April 13, 2026 and was completed by SLR Consulting (Canada) Ltd., prepared by Benjamin Sanfurgo, SLR Managing Principal Geologist. Centauri, majority owned by Aldebaran, holds a 100% interest in the project.
Resource updateAldebaran Reports 936 m of 0.66% CuEq (0.62% Cu, 0.09 g/t Au and 1.16 g/t Ag), including 194 m of 0.99% CuEq (0.92% Cu, 0.19 g/t Au and 1.02 g/t Ag) at the Altar Copper-Gold Project in San Juan Argentina
Infill drilling at the Altar copper-gold project in San Juan, Argentina returned 936.00 m of 0.66% CuEq from 130 m depth in hole ALD-26-049EXT, including 194 m of 0.99% CuEq from 346 m; other holes included 1,048 m of 0.40% CuEq from 260 m (ALD-26-159EXT) and 1,353 m of 0.29% CuEq from 70 m (ALD-26-171EXT). Six rigs are drilling to convert Inferred resources to Measured and Indicated, with an updated resource estimate by SRK expected Q3-2026 and the pre-feasibility study now expected Q2/Q3-2027.
Drill resultsAldebaran Adopts Shareholder Rights Plan
A shareholder rights plan was adopted effective March 30, 2026, under an agreement with Olympia Trust Company as rights agent, attaching one right to each outstanding common share. Rights become exercisable if a person becomes a beneficial holder of 20% or more of outstanding shares without complying with the plan's Permitted Bid provisions, allowing other holders to buy additional shares at a 50% discount to market price. The plan requires TSX Venture Exchange approval and shareholder ratification within six months, to be sought at the 2026 annual meeting planned for the second quarter of 2026, and would then remain effective for three years.
CorporateAldebaran and Centauri Announce Significant Increase in Mineral Resources for the Rio Grande Gold-Copper Project in Salta, Argentina
An updated NI 43-101 mineral resource estimate for the Rio Grande gold-copper project in Salta, Argentina, prepared by SLR Consulting, reports Indicated Resources of 153.7 million tonnes grading 0.29 g/t gold, 0.25% copper and 2.6 g/t silver (1.45 million ounces gold, 384,000 tonnes copper, 12.7 million ounces silver), plus Inferred Resources of 220.8 million tonnes at 0.22 g/t gold, 0.19% copper and 2.5 g/t silver. Metal prices used were US$3,000/oz gold, US$4.50/lb copper and US$45/oz silver.
Resource updateAldebaran Announces Closing of Concurrent Private Placement
A concurrent private placement has closed, with 1,538,462 common shares issued at $3.25 per share for gross proceeds of $5,000,001.50, subject to a hold period until June 18, 2026. Funds controlled by largest shareholder Route One Investment Company LLC bought the entire placement, a related party transaction under MI 61-101. Combined with the LIFE Offering closed February 5, 2026, the company issued 13,923,157 shares for total gross proceeds of $45,250,260.50, to fund a prefeasibility study on the Altar copper-gold project in San Juan, Argentina, and working capital.
FinancingAldebaran Grants Incentive Stock Options
Incentive stock options to purchase up to 3,990,000 common shares at $3.25 per share for five years have been granted to directors, officers, employees and consultants under Aldebaran's Stock Option Plan, vesting over a two-year period. The company has 183,799,372 shares issued and outstanding and 16,145,000 options outstanding, including those granted.
CorporateAldebaran Announces Closing of $40 Million Bought Deal Offering
A bought deal private placement closed with the issuance of 12,384,695 common shares at $3.25 per share for gross proceeds of $40,250,259. ATB Cormark Capital Markets and Red Cloud Securities Inc. acted as co-lead underwriters and joint bookrunners under an underwriting agreement dated February 5, 2026. Net proceeds will fund a prefeasibility study on the Altar copper-gold project in San Juan province, Argentina, and general working capital.
FinancingAldebaran Announces Full Exercise of the Underwriters' Option and Provides Update on the Concurrent Private Placement
The underwriters, co-led by ATB Cormark Capital Markets and Red Cloud Securities Inc., have exercised their full option to purchase an additional 1,615,395 common shares at $3.25 per share, raising aggregate proceeds of the bought deal offering to C$40,250,259. Aldebaran also plans to issue 1,538,462 shares at $3.25 for C$5,000,001.50 through a non-brokered concurrent private placement to shareholders with anti-dilution rights, subject to a four-month-plus-one-day hold. Closings are expected February 5, 2026 and mid-February 2026 respectively.
FinancingAldebaran Announces Upsize Of Bought Deal Life Offering To C$35 MM
A previously announced bought deal private placement has been upsized to 10,769,300 common shares at C$3.25 per share for gross proceeds of C$35,000,225, with Cormark Securities and Red Cloud Securities as co-lead underwriters. The underwriters hold an option for up to 1,615,395 additional shares for up to approximately C$5,250,034, and certain shareholders may participate in a concurrent non-brokered private placement under anti-dilution rights. Proceeds will fund a prefeasibility study on the Altar copper-gold project in San Juan province, Argentina, and working capital. Closing is expected on or about February 5, 2026.
FinancingAldebaran Announces C$20 MM Bought Deal Life Offering and Concurrent Private Placement
A bought deal private placement of 6,154,000 common shares at C$3.25 per share for gross proceeds of C$20,000,500 has been agreed with Cormark Securities and Red Cloud Securities as co-lead underwriters, with an option for up to 923,100 additional shares for up to C$3,000,075 more. A concurrent non-brokered private placement of up to 16,769,231 shares at the same price is planned under existing securityholders' participation rights. Proceeds will fund a prefeasibility study on the Altar copper-gold project in San Juan province, Argentina, and working capital, with closing expected about February 5, 2026.
Financing
20252 releases
Aldebaran Files PEA on Sedar+ and Announces Termination of the Option Agreement with Nuton Holdings Ltd.
An updated NI 43-101 Technical Report and Preliminary Economic Assessment for the Altar copper-gold project in San Juan Province, Argentina has been filed on SEDAR+, with an effective date of September 1, 2025, prepared by SRK Consulting Inc. with Knight Piesold as subcontractor. Nuton Holdings Ltd., a Rio Tinto venture, has given notice of termination of the November 7, 2024 option to joint venture agreement under which it could acquire a 20% interest in Altar. Aldebaran retains an 80% interest.
Study resultsAldebaran PEA for the Altar Project Reports 48 Year Mine Life, After Tax NPV (8%) of US$2 Billion, and 20.5% IRR
A preliminary economic assessment for the Altar copper-gold project in San Juan, Argentina reports a 48-year mine life (including 3 years of construction), an after-tax NPV (8%) of US$2.0 billion, a 20.5% IRR and a 4-year payback, using base-case prices of $4.35/lb Cu, $2,500/oz Au and $27/oz Ag. The 60,000 tpd open-pit and block-cave plan carries initial capex of $1.59 billion, LOM capital of $5,651 million, and LOM average annual output of 101,413 tonnes copper equivalent at LOM C1 costs of $2.02/lb and AISC of $2.59/lb. Aldebaran holds 80% of Altar, with 20% held by Sibanye-Stillwater.
Study results