Mr. John Black reports

ALDEBARAN ANNOUNCES UPSIZE OF BOUGHT DEAL LIFE OFFERING TO C$35 MM

As a result of strong investor demand, Aldebaran Resources Inc. has entered into an agreement with Cormark Securities Inc. and Red Cloud Securities Inc., as co-lead underwriters and joint bookrunners on behalf of a syndicate of underwriters, to increase the size of its previously announced bought deal private placement. The company will issue 10,769,300 common shares of the company at a price of $3.25 per share for aggregate gross proceeds of $35,000,225.

The company has granted the underwriters an option, exercisable in whole or in part, at any time prior to the closing date, to purchase up to an additional 1,615,395 shares at the issue price for additional gross proceeds of up to approximately $5,250,034.

In addition to the offering, certain shareholders of Aldebaran have contractual anti-dilution rights. If those rights are exercised, in whole or in part, the company would complete these through a non-brokered private placement offering of common shares of the company at the issue price. The number of common shares to be issued pursuant to the concurrent private placement will be determined after the securityholders have notified the company of the extent of their participation. The closing of the concurrent private placement is expected to occur at the same time as the offering and is subject to the company receiving all necessary regulatory approvals, including the approval of the TSX Venture Exchange. All common shares acquired pursuant to the concurrent private placement will be subject to a hold period of four months plus one day pursuant to applicable Canadian securities laws.

The company intends to use the net proceeds from the offering and the concurrent private placement to complete a prefeasibility study on its Altar copper-gold project in San Juan province, Argentina, and for general working capital purposes, as described in the amended offering document (as defined below).

The shares to be issued under the offering will be offered pursuant to Part 5A of National Instrument 45-106 (Prospectus Exemptions) as amended by Coordinated Blanket Order 45-935 (Exemptions from Certain Conditions of the Listed Issuer Financing Exemption) to purchasers in the provinces of Canada (other than the province of Quebec). The underwriters will also be entitled to offer the shares for sale in the United States pursuant to available exemptions from the registration requirements of the U.S. Securities Act of 1933, as amended, and in certain other jurisdictions outside of Canada and the United States provided it is understood that no prospectus filing or comparable obligation, continuing reporting requirement, or requisite regulatory or governmental approval arises in such other jurisdictions. The shares issued under the offering to Canadian subscribers pursuant to the listed issuer financing exemption will not be subject to a hold period in Canada.

There is an amended and restated offering document related to the offering that can be accessed under the company's issuer profile at SEDAR+ and the company's website. Prospective investors of shares issued under the listed issuer financing exemption should read the amended offering document before making an investment decision.

The offering and the concurrent private placement are expected to close on or about Feb. 5, 2026, or on such other date as may be agreed to by the company and the underwriters, subject to compliance with applicable securities laws. Notwithstanding the foregoing, the closing of the offering must occur no later than the 45th day following the date of this news release.

The completion of the offering is subject to customary conditions, including, but not limited to, the negotiation of an underwriting agreement among the parties with respect to the offering and the receipt of all necessary approvals, inclusive of the conditional acceptance of the TSX Venture Exchange.

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, the company announced an updated mineral resource estimate for Altar, prepared by Independent Mining Consultants Inc. and based on the drilling completed up to and including the 2023-2024 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).

We seek Safe Harbor.