Mr. Sam Leung reports

ALDEBARAN RESOURCES AND CENTAURI MINERALS ANNOUNCE C$17 MM BROKERED AND CONCURRENT C$8 MM NON-BROKERED PRIVATE PLACEMENTS BY CENTAURI

Aldebaran Resources Inc. and its majority-owned subsidiary Centauri Minerals Inc., in connection with the spinout transaction previously announced by the companies on June 1, 2026, the companies have entered into an agreement with TD Securities Inc. (TDSI), as lead agent and sole bookrunner on behalf of a syndicate of agents, pursuant to which, Centauri has agreed to sell, on a best efforts brokered private placement agency basis, up to 17 million subscription receipts of Centauri at a price of $1.00 per subscription receipt, for aggregate gross proceeds of up to $17-million.

Sam Leung, chief executive officer and director of Centauri, commented: "We are pleased to announce this offering, which represents a key milestone in advancing our previously announced spinout transaction. The proceeds from this financing will provide the resources necessary to complete the spinout, advance our exploration work programs at our projects in Argentina and position Centauri for success as a stand-alone public company. We look forward to completing the spinout and delivering on the significant opportunities we see ahead for Centauri and its shareholders."

The subscription receipts will be created and issued pursuant to the terms of a subscription receipt agreement to be entered into among Centauri, TDSI (on behalf of the subscribers) and Olympia Trust Company, as subscription receipt agent. Pursuant to the terms of the subscription receipt agreement, each subscription receipt sold pursuant to the offering (as defined below) will be deemed to be automatically exchanged for one freely tradeable common share in the capital of Centauri, without payment of additional consideration or further action by the holder thereof on the date that each of the escrow release conditions (as defined in the subscription receipt agreement) are satisfied or waived; provided, however, that if the escrow release conditions are not met on or before Sept. 30, 2026, each subscription receipt will entitle the holder thereof to receive 1.1 common shares. The escrow release conditions will include, among other things, that all conditions precedent to the completion of the arrangement have been satisfied, or waived with the consent of TDSI, and that there have been no material amendments to the terms and conditions of the arrangement agreement governing the terms of the arrangement which have not been approved by TDSI, acting reasonably. It is a condition to the completion of the arrangement that the common shares, including the common shares issuable on exchange of the subscription receipts, shall have been approved for listing on the TSX Venture Exchange.

Centauri has also granted TDSI an option, exercisable in whole or in part by TDSI giving notice to Centauri at any time up to 48 hours prior to the closing date (as defined below), to sell up to an additional $3-million of subscription receipts at the same price and on the same terms as subscription receipts sold pursuant to the brokered offering. All references herein to brokered offering shall be deemed to include the agents' option and all references herein to subscription receipts shall be deemed to include the Additional subscription receipts.

Concurrent with the brokered offering, Centauri will complete, on a private placement basis, a non-brokered offering of up to eight million subscription receipts, on the same terms as the brokered offering, to subscribers identified by Centauri for aggregate gross proceeds of up to $8-million.

The brokered offering is expected to close in escrow on or about the week of July 20, 2026, or on such other date as may be determined by Centauri and TDSI. The non-brokered offering is expected to close concurrently with the brokered offering, however, the offerings are not cross-conditional and it is possible that the non-brokered offering closes subsequent to the brokered-offering.

Upon closing of the offering, the gross proceeds of the offering less 50 per cent of the agency fee (as defined below) and all of the eligible expenses of the agents not yet paid as of the closing date, will be delivered to and held by the subscription receipt agent and invested in an interest bearing account, all pursuant to the subscription receipt agreement. Upon satisfaction of the escrow release conditions, on the escrow release date, the subscription receipt agent shall release the escrowed funds as follows: (i) to, or as directed by, TDSI, on its own behalf and on behalf of the agents, an amount equal to the remaining 50 per cent of the agency fee and all remaining agents' expenses not previously paid on the closing date, and (ii) following release of the agents' payment, the remaining escrowed funds to Centauri.

In consideration of their services, Centauri has agreed to pay the agents a cash commission in an amount equal to 6 per cent of the aggregate gross proceeds from the sale of the subscription receipts under the brokered offering (including, for greater certainty, any subscription receipts issued in connection with the agents' option). No commission will be payable by Centauri in connection with the non-brokered offering.

It is expected that the subscription receipts sold under the offering will be offered for sale on a private placement basis in Canada to accredited investors (as such term is defined in National Instrument 45-106 -- Prospectus Exemptions) and on a private placement basis in the United States to qualified institutional buyers pursuant to available exemptions from the registration requirements under the U.S. Securities Act of 1933, as amended. The subscription receipts are not transferable and will not be listed on any stock exchange.

If (i) the escrow release conditions are not satisfied on or before the date that is 120 days from the closing date or such later date as may be agreed to by not less than 66.66 per cent of the holders of subscription receipts or, (ii) if prior to the escrow deadline, the arrangement is terminated or Centauri has advised the subscription receipt agent and TDSI, or announced to the public, that the arrangement will not be completed, within five business days following the termination date, the escrowed funds shall be returned to the holders of subscription receipts pro rata. To the extent that the escrowed funds are not sufficient to satisfy the issue price of each such subscription receipt, Centauri will contribute such amounts as are necessary to satisfy any shortfall.

Pursuant to the arrangement, it is a condition of closing that the offering be completed for minimum gross proceeds to Centauri of $10-million of subscription receipts. For the avoidance of doubt, the minimum amount does not impose any obligation, express or implied, on the part of the agents to purchase, underwrite or arrange substitute purchases for the subscription receipts.

Centauri intends to use the net proceeds from the offering to advance exploration of the Rio Grande gold-copper project located in Salta, Argentina, for the exploration and advancement of other portfolio assets, and for general corporate purposes.

The offering is subject to a number of customary conditions, including the receipt of all applicable regulatory approvals, including the approval of the TSX-V, execution of an agency agreement with the agents and the subscription receipt agreement with TDSI and the subscription receipt agent, as well as other customary closing conditions and deliverables for a transaction of this nature.

About Aldebaran Resources Inc.

Aldebaran is a mineral exploration company that was spun out of Regulus Resources Inc. in 2018 and has the same core management team. Aldebaran holds an 80-per-cent interest in the Altar copper-gold project in San Juan province, Argentina. The Altar project hosts multiple porphyry copper-gold deposits with potential for additional discoveries. Altar forms part of a cluster of world-class porphyry copper deposits which includes Los Pelambres (Antofagasta Minerals), El Pachon (Glencore) and Los Azules (McEwen Copper). In November, 2024, Aldebaran announced an updated mineral resource estimate for the Altar project, prepared by Independent Mining Consultants Inc. and based on the drilling completed up to and including the 2023 to 2024 field season (independent technical report prepared by Independent Mining Consultants Inc., Tucson, Ariz., titled "Technical Report, Estimated Mineral Resources, Altar Project, San Juan Province, Argentina," dated Dec. 31, 2024 -- see news release dated Nov. 25, 2024). In October, 2025, Aldebaran announced a preliminary economic assessment (PEA) for the Altar project (independent technical report prepared by SRK Consulting Inc, Denver, Colo., titled "NI 43-101 Technical Report Preliminary Economic Assessment Altar Project San Juan, Argentina," dated Sept. 30, 2025 -- see news release dated Oct. 30, 2025).

About Centauri Minerals Inc.

Centauri Minerals is a new mineral exploration company focused on Northern Argentina, a mining region of increasing global significance. Centauri holds a 100-per-cent interest in a portfolio of exploration projects spanning approximately 40,000 hectares in the provinces of Salta, Jujuy and Catamarca, which was spun out from Aldebaran Resources. The most advanced is the Rio Grande gold-copper project located in Salta, which has an independent National Instrument 43-101 -- Standards of Disclosure for Mineral Projects compliant mineral resource estimate that highlights significant gold and copper quantities. Centauri has offices and facilities in Salta, Argentina, and Vancouver, Canada. It is currently a private company majority owned by Aldebaran Resources with plans to become a public company in 2026.

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