Tribeca Resources Signs Definitive Option Agreement to Acquire the Jiguata Porphyry Copper Property in Northern Chile

29 OCTOBER, 2025 | VANCOUVER, BC

Tribeca Resources Signs Definitive Option Agreement to Acquire the Jiguata Porphyry Copper Property in Northern Chile

Tribeca Resources Corporation (TSXV: TRBC) (OTCQB: TRRCF) (“Tribeca Resources” or the “Company”) is pleased to announce that, further to the Company's news release dated June 19, 2025, it has entered into a definitive option agreement dated October 28, 2025 (“Option Agreement”) with private arm’s length vendors (the “Project Vendors”) to acquire a 100% interest in the 10,000 hectare Jiguata Porphyry Copper property (the “Jiguata Property”) over a period of 5 years (the “Purchase Option”).

The Jiguata Property, located in northern Chile, 120km north of the major mining company controlled Collahuasi and Quebrada Blanca mines (Figure 1), will be progressed in parallel with the Company’s two existing projects: La Higuera (the “La Higuera Property”) and Chiricuto (the “Chiricuto Property”), both located in the Chilean Coastal IOCG Belt.

Highlights:

• Large epithermal and interpreted porphyry alteration system in the northern extension of the prolific Chilean porphyry-bearing Eocene-Oligocene Belt, with partial overprint and cover by younger Miocene age rocks
• Drive-up access via paved Collahuasi road, nearby accommodation and associated infrastructure
• Soil sampling, historic drilling, geological mapping and geophysics highlight a large 5km x 3km exploration target zone, with two existing discrete near drill-ready targets
• Under the Option Agreement, during the first two years, Tribeca will make staged cash payments totalling US$ 100,000 and undertake a minimum of 3,000 meters of drilling
• Pre-drilling activities at the Jiguata Property will be undertaken in parallel with further drilling at the Company’s flagship La Higuera Property

Tribeca Resources CEO, Dr. Paul Gow commented:

“We are very pleased to have now signed the definitive Option Agreement for this exciting porphyry copper exploration opportunity at Jiguata. Following the successful financing last week, preparations now are underway to commence fieldwork at Jiguata in the coming weeks.”

“The next twelve months will be a period of high activity for Tribeca, with drilling planned at our cornerstone La Higuera Property as well as at the Jiguata Property. Our now expanded portfolio of three high potential Chilean copper projects positions Tribeca Resources to capitalise on growing interest in quality copper exploration.”

The Jiguata Property option agreement

Tribeca has entered into a 5-year Option Agreement, giving it the right, but not the obligation, to acquire a 100% interest in the Jiguata Property. Tribeca has made a payment to the vendors of US$25,000 in connection with signing of the definitive Option Agreement, and will reimburse the Project Vendors approximately US$44,000 for the 2025 licence fee already paid by them.  Under the terms of the Option Agreement, the total consideration and required work commitments, as applicable, will be as follows on a yearly basis:

Upon exercise of the Purchase Option (which remains at the sole discretion of the Company), the Project Vendors will retain a 2.0% net smelter return royalty (the “NSR Royalty”) over the Jiguata Property. Tribeca will have a right to repurchase 100% of the NSR royalty for US$20 million.

For more information regarding the terms of the Option Agreement, please see the Company’s press release dated June 19, 2025.

The Jiguata Property (see Figure 1 below) comprises 34 exploration concessions covering 10,000 hectares and is located in the northern extension of the Eocene-Oligocene metallogenic belt of northern Chile (Figure 1), where it has been overprinted by the Miocene magmatic belt. The prolific Eocene-Oligocene Belt hosts the giant Collahuasi, Chuquicamata and Escondida deposits.

The project area encompasses a large advanced argillic alteration zone (25 square km) hosted within a volcanic tuffaceous unit under a thin blanketing cover of fresh unaltered Miocene dacitic volcanic rocks dated at approximately 9-5 Ma. The alteration zone has been exposed via erosional windows in the overlying Miocene volcanic rocks.

Tribeca Resources plans to extend the historic mapping and surface sampling and undertake additional geophysics prior to proceeding with drilling at the Jiguata Property. Tribeca Resources will be the operator of the project.

Tribeca confirms that there are no finder’s fees payable in connection with the entering into of the Option Agreement. The Company’s entry into the Option Agreement and any future acquisition within the Jiguata Property remains subject to the approval of the TSX Venture Exchange (the “TSXV”).

Finder’s Fee in Connection with the Company’s Non-Brokered Private Placement Offering

In connection with the closing of the Company’s non-brokered private placement offering of units further described in its news release dated October 23, 2025 (the “Offering”), the Company previously announced that it had paid an aggregate of approximately $248,694 and issued finder’s warrants to acquire up to an aggregate of 1,184,257 common shares of the Company (the “Finder’s Warrants”) as finder’s fees to certain eligible finders in consideration for introducing certain purchasers to the Company. The Company wishes to clarify that it has also paid an additional $3,717 and issued an additional 17,700 Finder’s Warrants as finder’s fees to certain eligible finders. As a result, the Company paid an aggregate of approximately $252,411 and issued an aggregate of 1,201,957 Finder’s Warrants to eligible finders in connection with the Offering.

Qualified Person

All scientific and technical information in this press release has been prepared by, or approved by, Dr. Paul Gow, who is the CEO of Tribeca Resources. He is a Member of the Australian Institute of Geoscientists (MAIG), a Member of the Australasian Institute of Mining and Metallurgy (MAusIMM) and a qualified person for the purposes of NI 43-101. Dr. Gow has not verified any of the information regarding any of the properties or projects referred to herein other than the La Higuera Property, the Chiricuto Property and the Jiguata Property. Mineralization on any other properties referred to herein is not necessarily indicative of mineralization on the La Higuera, Chiricuto or Jiguata Properties.

About Tribeca Resources

Tribeca Resources is a copper exploration company focused on discovering and developing assets in the Coastal IOCG Belt of northern Chile. The Company’s management team, whose members are significant shareholders of the Company, has world-leading expertise and a discovery history with iron oxide copper-gold deposits in the world’s great IOCG Belts of the Carajás district in Brazil and the Gawler and Cloncurry provinces of Australia.

Tribeca Resources’ objective is to provide the mineral resources for the next generation of copper mines in Chile. It is focused on building a portfolio of projects, with emphasis on mid to advanced-stage copper exploration and resource development projects. To this end, mineral targets are regularly assessed in pursuit of acquisition, strategic exploration and significant discovery.

Tribeca Resources’ flagship property is the La Higuera Property that comprises 4,147 hectares of granted mining and exploration licences and is located towards the southern end of the Chilean Coastal IOCG Belt in the Coquimbo Region of northern Chile. Further information about the project can be found in the NI 43-101 Technical Report lodged by Tribeca Resources on SEDAR on 24 October 2022.

On behalf of Tribeca Resources Corporation

Cautionary Note

Neither the TSX Venture Exchange Inc. nor its Regulation Service Provider (as that term is defined in the policies of the TSX Venture Exchange Inc.) accepts responsibility for the adequacy or accuracy of this press release.

This press release does not constitute or form a part of any offer or solicitation to purchase or subscribe for securities in the United States. The securities referred to herein have not been and will not be registered under the Securities Act of 1933, as amended (the “Securities Act”), or with any securities regulatory authority of any state or other jurisdiction in the United States, and may not be offered or sold, directly or indirectly, within the United States or to, or for the account or benefit of, U.S. persons, as such term is defined in Regulation S under the Securities Act (“Regulation S”), except pursuant to an exemption from or in a transaction not subject to the registration requirements of the Securities Act.

Forward Looking Information

This press release contains forward-looking statements and information that are based on the beliefs of management and reflect the Company's current expectations. When used in this press release, the words "estimate", "project", "belief", "anticipate", "intend", "expect", "plan", "predict", "may" or "should" and the negative of these words or such variations thereon or comparable terminology are intended to identify forward-looking statements and information. The forward-looking statements and information contained in this press release include statements regarding the Option Agreement in respect of the Jiguata Property, the ability to obtain TSXV approval in respect of the Option Agreement and the Offering, the ability of the Company to develop and define suitable drill targets at the Jiguata and La Higuera Properties, the relationship between geophysical survey results and potential mineralization, the ability of the Company to raise appropriate funding to complete the work program at the Jiguata and La Higuera Properties and other future plans and objectives of the Company, including other exploration projects.

Such statements and information reflect the current view of the Company. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors, which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others,: the ability of the Company to obtain TSXV approval in respect of the Option Agreement and the Offering, the ability of the Company to pay the purchase price as well as any other payments required by the Option Agreement, the risks associated with mineral exploration, including the risk that actual results of exploration will be different from those expected by management,  and the risk that new laws or regulations could adversely affect the business and results of operations of the Company and the anticipated work performed on the Company’s projects.

There are several important factors that could cause the Company’s actual results to differ materially from those indicated or implied by forward-looking statements and information. Such factors include, among others: reliance on key management; changes in the credit or security markets; results of operation activities; unanticipated costs and expenses; fluctuations in commodity prices; and general market and industry conditions. The Company cautions that the foregoing list of material factors is not exhaustive. When relying on the Company's forward-looking statements and information to make decisions, investors and others should carefully consider the foregoing factors and other uncertainties and potential events.

The Company has assumed that the material factors referred to in the previous paragraph will not cause such forward-looking statements and information to differ materially from actual results or events. The forward-looking information contained in this press release represents the expectations of the Company as of the date of this press release and, accordingly, is subject to change after such date. Readers should not place undue importance on forward looking information and should not rely upon this information as of any other date. While the Company may elect to, it does not undertake to update this information at any particular time except as required in accordance with applicable laws.