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Sendero Resources Announces Updated Option Agreement with Emse

Mergers & Acquisitions Property Options & Staking

SENDERO RESOURCES ANNOUNCES UPDATED OPTION AGREEMENT WITH EMSE

Vancouver, British Columbia – (July 17th, 2025) – Sendero Resources Corp. (TSXV: SEND) (the “Company”

or “Sendero”) is delighted to announce that it has executed a definitive option agreement with Energía y

Minerales Sociedad del Estado (“EMSE”), the Energy and Minerals State Society of La Rioja , Argentina,

which replaces the original option agreement dated March 4th, 2024 (see the Company’s news release of

March 5th, 2024).

The Company is pleased to formalize its rights to these exploration claims, which together with the already

owned adjacent Peñas Negras project , makes this one of the largest contiguous land positions in the

Vicuña district, a district that is highly prospective for copper and gold projects and mines, and where

there is already mineralization based on historical drilling. The new option agreement continues to apply

to EMSE’s claims consisting of eight exploration claims, covering a total area of 9,177 hectares (91.7 km²),

which are contiguous with and east of the Company’s 100% owned Peñas Negras Project, a copper- gold

exploration project spanning 12,000 hectares (120 km²). The total project area comprises 21,177 hectares

(211.77 km2)(see Figure 1).

“We are pleased to continue to work with EMSE and the Province of La Rioja to unlock the potential of our

district-scale land package. We are steadfast in our mandate to move exploration forward, ensuring that

the benefits of development are shared equitably with the people of La Rioja. We are working on delivering

our initial exploration program so that we are ready for the next field season”, said Alex Gostevskikh, Chief

Executive Officer of Sendero.

Figure 1.

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Terms of the Transaction

The Company has the right to acquire a 100% interest in the EMSE claims in consideration for (i) incurring

a total of US$5,000,000 of exploration expenditures over five years on the EMSE claims, (ii) paying an

aggregate of US$65,000 over five years, and (iii) granting a 1.0% NSR royalty over all the EMSE and Peñas

Negras claims (which will become a 0.5% NSR royalty on the Peñas Negras claims in the event the option

on the EMSE claims is not exercised).

About Sendero Resources Corp.

The Company is focused on copper-gold exploration at its 100% owned Peñas Negras Project in the Vicuña

Belt in Argentina. The Peñas Negras Project has similar geological characteristics to other deposits in the

Vicuña Belt and multiple porphyry and high -sulfidation epithermal targets have been identified on the

project. The centre of the Peñas Negras concession area is situated approximately 18 km southeast of

Caserones mine operated by Lundin Mining, approximately 24 km northeast of NGEx Minerals’ Lunahuasi

project, and about 32 km north -northeast of BHP-Lundin Mining’s Filo del Sol advanced exploration and

development stage project.

Further Information

For further information, please contact:

Sendero Resources Corp,

Alex Gostevskikh Chief Executive Office

Email: [email protected]

+1 888 455 7620

Cautionary Statements

This press release contains “forward-looking information” and “forward-looking statements” (collectively, “forward-

looking statements”) within the meaning of applicable Canadian securities legislation. All statements, other than

statements of historical fact, are forward -looking statements and are based on expectations, estimates and

projections as at the date of this press release. Any statement that involves discussions with respect to predictions,

expectations, beliefs, plans, projections, objectives, as sumptions, future events or performance (often but not

always using phrases such as “expects”, or “does not expect”, “is expected” “anticipates” or “does not anticipate”,

“plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “believes” or intends” or variations of such words and

phrases or stating that certain actions, events or results “may” or “could, “would”, “might” or “will” be taken to

occur or be achieved) are not statements of historical fact and may be forward-looking statements. Forward-looking

statements are necessarily based upon a number of estimates and assumptions that, while considered reasonable,

are subject to kn own and unknown risks, uncertainties, and other factors which may cause the actual results and

future events to differ materially from those expressed or implied by such forward -looking statements. There can

be no assurance that such statements will prove to be accurate, as actual results and future events could differ

materially from those anticipated in such statements. Specifically, there is no assurance the Company will be able

to exercise the option to acquire the EMS E claims, or that satisfactory results will be derived from work on such

claims. Accordingly, readers should not place undue reliance on the forward- looking statements and information

contained in this press release. Except as required by law, the Company does not assume any obligation to update

the forward-looking statements of beliefs, opinions, projections, or other factors, should they change, except as

required by law.

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

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