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Aldebaran Resources and Centauri Minerals Announce Closing of $25 million Subscription Receipt Financing in Connection with Centauri Spin-Out

Financings Mergers & Acquisitions

Not for distribution to United States newswire services or for dissemination in the United States.

Aldebaran Resources and Centauri Minerals Announce Closing of $25 million

Subscription Receipt Financing in Connection with Centauri Spin-Out

VANCOUVER, CANADA (July 23, 2026) – Aldebaran Resources Inc. ("Aldebaran") (TSX-V: ALDE, OTCQX:

ADBRF) and its majority-owned subsidiary Centauri Minerals Inc. ("Centauri" and together with Aldebaran, the

"Companies") are pleased to announce the closing of Centauri’s offering of subscription receipts (each, a

"Subscription Receipt"), at a price of C$1.00 per Subscription Receipt (the " Issue Price") for aggregate gross

proceeds of $25,486,000 consisting of: (i) a brokered private placement (“Brokered Offering”) of 17,486,000

Subscription Receipts at the Issue Price, for aggregate gross proceeds of $17,486,000 completed through a syndicate of

agents led by TD Securities Inc. ("TDSI"), as lead agent and sole bookrunner and including ATB Cormark Capital

Markets, Canaccord Genuity Corp. and National Bank Financial Inc. (together with TDSI, the "Agents"); and (ii) a

non-brokered private placement of 8,000,000 Subscription Receipts at the Issue Price for gross proceeds of $8,000,000

(the “Non-Brokered Offering” and together with the Brokered Offering, the “Offering”).

The gross proceeds of the Offering (the "Escrowed Funds"), less 50% of the Agents' commission in respect of the

Brokered Offering and certain eligible expenses of the Agents covered by Centauri, have been deposited in escrow

pursuant to the terms of a subscription receipt agreement (the "Subscription Receipt Agreement") dated July 22, 2026

among Centauri, TDSI and Olympia Trust Company, as the subscription receipt agent. The Escrowed Funds will be held

in escrow pending satisfaction of all of the escrow release conditions (the "Escrow Release Conditions"), including

among other things, that all conditions precedent to the completion of the Arrangement (as defined below) 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 Offering be completed, as well

as that the Common Shares (as defined below), including the Common Shares issuable on exchange of the Subscription

Receipts, shall have been approved for listing on the TSX Venture Exchange (the "TSX-V").

Each Subscription Receipt will be deemed to be automatically exchanged for one freely tradeable common share in

the capital of Centauri (each, a "Common Share"), without payment of additional consideration or further action by

the holder thereof on the date (the "Escrow Release Date") that each of the Escrow Release Conditions are satisfied

or waived; provided, however, that if the Escrow Release Conditions are not met on or before September 30, 2026,

each Subscription Receipt will entitle the holder thereof to receive 1.1 Common Shares.

If (i) the Escrow Release Conditions are not satisfied on or before the date that is 120 days from the date hereof or

such later date as may be agreed to by not less than 66 2/3% of the holders of Subscription Receipts (the "Escrow

Deadline") or, (ii) if prior to the Escrow Deadline, the spin-out transaction previously announced by the Companies

on June 1, 2026 (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 (the date upon which any such event occurs,

the "Termination Date"), within five (5) business days following the Termination Date, the Escrowed Funds shall be

returned to the holders of Subscription Receipts pro rata.

In consideration of their services, Centauri agreed to pay the Agents a cash commission in an amount equal to 6% of

the aggregate gross proceeds from the sale of the Subscription Receipts under the Brokered Offering. No commission

was payable by Centauri in connection with the Non-Brokered Offering.

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.

For further information or to subscribe to the Centauri news list, please contact:

Sam Leung

CEO and Director

Centauri Minerals Inc.

Phone: +1 416 206 4187

Email: [email protected]

Ben Cherrington

Manager, Investor Relations

Aldebaran Resources Inc.

Phone: +44 7538 244 208

Email: [email protected]

This news release does not constitute an offer to sell or a solicitation of an offer to buy nor shall there be any sale of any

of the securities in any jurisdiction in which such offer, solicitation or sale would be unlawful, including any of the

securities in the United States of America. The securities have not been and will not be registered under the 1933 Act or

any state securities laws and may not be offered or sold within the United States or to, or for account or benefit of, U.S.

Persons (as defined in Regulation S under the 1933 Act) unless registered under the 1933 Act and applicable state

securities laws, or an exemption from such registration requirements is available.

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% 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 Pachón (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 2023-24 field season (independent technical report prepared by

Independent Mining Consultants Inc., Tucson, Arizona, titled "Technical Report, Estimated Mineral Resources, Altar

Project, San Juan Province, Argentina", dated December 31, 2024 – see news release dated November 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, Colorado, titled "NI 43-101 Technical Report Preliminary

Economic Assessment Altar Project San Juan, Argentina", dated September 30, 2025 – see news release dated October

30, 2025).

About Centauri Minerals Inc.

Centauri Minerals Inc. is a new mineral exploration company focused on Northern Argentina, a mining region of

increasing global significance. Centauri holds a 100% -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 Inc. 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 Inc. with plans to become a public

company in 2026.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies of the TSX

Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

Forward-Looking Statements

Certain statements regarding Aldebaran and/or Centauri, including management's assessment of future -plans and

operations, may constitute forward-looking statements under applicable securities laws and necessarily involve known

and unknown risks and uncertainties, most of which are beyond the control of Aldebaran or Centauri. Often, but not

always, forward-looking statements or information can be identified by the use of words such as "plans", "expects" or

"does not expect", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not

anticipate" or "believes" or variations of such words and phrases or statements that certain actions, events or results

"may", "could", "would", "might" or "will" be taken, occur or be achieved.

Specifically, and without limitation, all statements included in this news release that address activities, events or

developments that Aldebaran and/or Centauri expect or anticipate will or may occur in the future, including, among

others, the satisfaction or waiver of the Escrow Release Conditions and the release of the Escrowed Funds; the

completion of the Arrangement and related spin-out transaction; anticipated use of proceeds from the Offering,

anticipated regulatory approvals and the intent to have Common Shares listed on the TSX-V, may constitute forward-

looking statements under applicable securities laws and necessarily involve known and unknown risks and uncertainties,

most of which are beyond the control of Aldebaran or Centauri, such as, among others, the inability to obtain the

necessary approvals for the proposed listing of Common Shares; that the Offering will not be completed on the terms or

timeline anticipated or at all; the failure to satisfy or waive the Escrow Release Conditions within the required time; the

failure to complete the Arrangement; that Centauri may not obtain all required regulatory approvals for the Offering;

that Centauri may not be able to use the proceeds of the Offering as anticipated; that Centauri may require additional

financing from time to time in order to continue its operations which may not be available when needed or on acceptable

terms and conditions acceptable; and that compliance with extensive government regulation; domestic and foreign laws

and regulations could adversely affect Centauri's business and results of operations. These risks may cause actual

financial and operating results, performance, levels of activity and achievements to differ materially from those expressed

in, or implied by, such forward-looking statements. Although Aldebaran and Centauri believe that the expectations

represented in such forward-looking statements are reasonable, there can be no assurance that such expectations will

prove to be correct. The forward-looking statements contained in this press release are made as of the date hereof and

Aldebaran and Centauri do not undertake any obligation to publicly update or revise any forward-looking statements

or information, whether as a result of new information, future events or otherwise, unless so required by applicable

securities law.