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Defiance Silver Receives Approval for up to 172 Drill Sites at Espiritu Copper Target, Sonora

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Defiance Silver (OTCQX:DNCVF) announced that Mexico's Secretariat of Environment and Natural Resources (SEMARNAT) has approved its Informe Preventivo for the Espiritu copper target at the Green Earth Project in Sonora, Mexico. This approval provides the environmental authorization required to conduct exploration drilling under Mexican regulations.

The authorization allows Defiance Silver to carry out exploration activities for approximately 60 months, including the construction of up to 172 drill platforms and related access roads, subject to SEMARNAT’s terms and conditions. According to the company, this permit is an important step in advancing the Green Earth Project and supports its broader strategy of generating new discoveries and growing resources across its Mexican project portfolio, which includes the Zacatecas silver project, the 100% owned Tepal gold/copper project, and the Green Earth Metals properties.

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Positive

  • SEMARNAT approval secured for Espiritu target exploration drilling
  • Authorization covers approximately 60 months of exploration activities
  • Permit allows construction of up to 172 drill platforms plus access roads
  • Regulatory milestone advances Green Earth Project in Sonora, Mexico

Negative

  • None.

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Vancouver, British Columbia--(Newsfile Corp. - August 5, 2026) - Defiance Silver Corp. (TSXV: DEF) (FSE: D4E) (WKN: A1JQW5) ("Defiance" or the "Company") is pleased to announce that Mexico's Secretariat of Environment and Natural Resources ("SEMARNAT") has approved the Company's Informe Preventivo for the Espiritu target at its Green Earth Project in Sonora, Mexico.

The approved Informe Preventivo constitutes the environmental authorization required to conduct exploration drilling in accordance with applicable Mexican environmental regulations. The authorization permits exploration activities for a period of approximately 60 months, including the construction of up to 172 drill platforms and related access roads, subject to the terms and conditions set forth by SEMARNAT.

The Company submitted the Informe Preventivo as part of its commitment to conducting exploration activities in accordance with applicable environmental standards and regulatory requirements. Defiance acknowledges the efforts of SEMARNAT and the Company's technical and environmental consultants throughout the permitting process.

Chris Wright, Chairman and CEO of Defiance Silver Corp., commented:
"This approval is a significant step forward for the Green Earth Project as we continue to advance our portfolio. Our focus remains on generating new discoveries, unlocking the potential of our assets, and creating long-term value for shareholders. We look forward to commencing the work program and building on the momentum we have established across our projects."

About Defiance Silver Corp.

Defiance Silver Corp. (TSXV: DEF) (OTCQX: DNCVF) (FSE: D4E) is an exploration company advancing the district-scale Zacatecas project, located in the historic Zacatecas Silver District, the 100% owned Tepal Gold/Copper Project in Michoacán state, Mexico and the newly acquired Green Earth Metals property portfolio in Sonora State. Defiance is managed by a team of proven mine developers with a track record of exploring, advancing, and developing several operating mines and advanced resource projects. Defiance Silver's corporate mandate is to advance its projects through capital-efficient exploration focused on resource growth and new mineral discoveries.

On behalf of Defiance Silver Corp.
"Chris Wright"
Chairman of the Board

‍For more information, please contact:

Investor Relations at +1 (604) 343-4677 or email at info@defiancesilver.com
www.defiancesilver.com

Suite 2900-550 Burrard Street
Vancouver, BC V6C 0A3, Canada
Tel: +1 (604) 343-4677
Email: info@defiancesilver.com

Qualified Person Statement
Mr. George Cavey, P. Geo, a director and officer of the Company, is a Qualified Person within the meaning of National Instrument 43-101 and has approved the technical information concerning the Company's material mineral properties contained in this press release.

‍Disclaimer
Neither 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.

Caution Regarding Forward-Looking Information
Information contained in this news release which are not statements of historical facts may be "forward-looking information" for the purposes of Canadian securities laws. Such forward-looking information involves risks, uncertainties and other factors that could cause actual results, performance, prospects, and opportunities to differ materially from those expressed or implied by such forward looking information. The words "believe", "expect", "anticipate", "contemplate", "plan", "intends", "continue", "budget", "estimate", "may", "will", "schedule", "understand" and similar expressions identify forward-looking information. These forward-looking statements relate to, among other things: the Company's expectations regarding the ability of the Mining Bureau of Mexico City to reinstate ownership of the concessions to the Company, cooperation with the Mining Bureau relating to such reinstatement and the potential for any successful solution resulting therefrom.

Forward-looking information is necessarily based upon a number of estimates and assumptions that, while considered reasonable by Defiance, are inherently subject to significant technical, political, business, economic and competitive uncertainties, and contingencies. Known and unknown factors could cause actual results to differ materially from those projected in the forward-looking information. Factors and assumptions that could cause actual results or events to differ materially from current expectations include, among other things: the inability of the Company to regain possession of its concessions; political risks associated with the Company's operations in Mexico; the failure of the Mining Bureau in Mexico City to take any coercive action to reinstate ownership of the concessions to the Company; and the inability of the Company and its subsidiaries to enforce their legal rights in certain circumstances. For additional risk factors, please see the Company's most recently filed Management Discussions & Analysis for its quarter ended March 31, 2026, available on SEDAR at www.sedarplus.ca.

There can be no assurances that forward-looking information and statements will prove to be accurate, as many factors and future events, both known and unknown could cause actual results, performance, or achievements to vary or differ materially from the results, performance or achievements that are or may be expressed or implied by such forward-looking statements contained herein or incorporated by reference. Accordingly, all such factors should be considered carefully when making decisions with respect to Defiance, and prospective investors should not place undue reliance on forward looking information. Forward-looking information in this news release is made as at the date hereof. The Company assumes no obligation to update or revise forward-looking information to reflect changes in assumptions, changes in circumstances or any other events affecting such forward-looking information, except as required by applicable law.

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/308114

FAQ

What did Defiance Silver (OTCQX:DNCVF) receive approval for at the Espiritu copper target?

Defiance Silver received SEMARNAT approval of its Informe Preventivo, granting environmental authorization for exploration drilling at the Espiritu target. According to the company, this enables a multi-year drilling program under Mexican environmental regulations.

How many drill sites are authorized at Defiance Silver's Espiritu target in Sonora?

The SEMARNAT authorization permits construction of up to 172 drill platforms at the Espiritu target. According to Defiance Silver, the permit also covers related access roads needed to carry out the exploration drilling program.

How long is Defiance Silver’s Espiritu drilling authorization valid in Mexico?

The exploration authorization for Espiritu is valid for approximately 60 months. According to Defiance Silver, this period covers exploration activities including drilling and construction of drill platforms and access roads, subject to SEMARNAT’s terms and conditions.

How does the Espiritu permit affect Defiance Silver’s Green Earth Project strategy (DNCVF)?

The Espiritu permit provides key environmental clearance to begin drilling at Green Earth. According to Defiance Silver, this approval is an important step in advancing the project and supports its broader exploration and discovery-focused portfolio strategy in Mexico.

Where is Defiance Silver’s Espiritu copper target and Green Earth Project located?

The Espiritu copper target is part of Defiance Silver’s Green Earth Project in Sonora State, Mexico. According to the company, Green Earth complements its existing Zacatecas silver project and Tepal gold/copper project elsewhere in Mexico.

What stage of development is Defiance Silver (DNCVF) in after the Espiritu drilling approval?

Defiance Silver remains an exploration-stage company, now permitted to drill at Espiritu. According to the company, the SEMARNAT approval allows it to commence a work program aimed at generating new mineral discoveries at the Green Earth Project.