Apollo Files NI 43-101 Technical Report for the Calico Silver Project Updated Mineral Resource Estimate

VANCOUVER, British Columbia, Oct. 16, 2025 (GLOBE NEWSWIRE) -- Apollo Silver Corp. (“Apollo” or the “Company”) (TSX.V:APGO, OTCQB:APGOF, Frankfurt:6ZF) is pleased to announce that it has filed the independent technical report for the updated Mineral Resource Estimate (“MRE”) for the Calico Silver Project (“Calico” or the “Calico Project”).

The report titled “NI 43-101 Technical Report and Mineral Resource Estimate for the Calico Silver Project, San Bernardino County, California, USA”, is dated October 16, 2025 (with an effective date of June 30, 2025) (the “Technical Report”). The Technical Report is available under the Company’s issuer profile on SEDAR+ (www.sedarplus.ca) and on the Company’s website (www.apollosilver.com).

The Technical Report was prepared in accordance with National Instrument 43-101 (“NI 43-101”) Standards of Disclosure for Mineral Projects by Stantec Consulting Ltd. (“Stantec”) of Denver, Colorado. There are no material differences in the Technical Report from those results disclosed in the Company's press release dated September 4, 2025.

Highlights of the MRE announced on September 4, 2025, include:

• New combined Measured and Indicated total of 55 million tonnes (“Mt”) at a grade of 71 grams per tonne (“g/t”) silver (“Ag”) for a total of 125 million ounces (“Moz”) Ag ⁽¹⁾⁽²⁾
  • 61% increase in tonnage and a 14% increase in Ag ounces representing an increase of 15 Moz contained Ag
• Inferred total of 0.6 Mt at a grade of 26 g/t Ag for a total of 0.51 Moz contained Ag ⁽¹⁾⁽²⁾
• Inaugural barite (“BaSO₄”) and zinc (“Zn”) resources are estimated as:
  • Indicated: 36 Mt @ 7.4% BaSO₄ and 0.45% Zn for a total content of 2.7 Mt BaSO₄ and 354 million pounds (“Mlbs”) Zn ⁽¹⁾⁽²⁾
  • Inferred: 17 Mt @ 3.9% BaSO₄ and 0.71% Zn for a total content of 0.65 Mt BaSO₄ and 258 Mlbs Zn ⁽¹⁾⁽²⁾
• Gold (“Au”) ounces have increased by 86% in the Inferred category for a new total of 17 Mt at a grade of 0.25 g/t Au and total Au content of 0.13 Moz ⁽¹⁾⁽²⁾
• One single pit for all metals at the Waterloo deposit with a low strip ratio of 0.8:1
• Updated Langtry MRE now includes 24 million tonnes at a grade of 73 g/t Ag for a total Ag content of 57 million ounces ⁽¹⁾⁽³⁾
• The increased quantities of Ag and Au, the addition of two new critical minerals, and the larger single pit with low strip ratio have derisked the Calico Project
• Sensitivity analyses show resiliency of the Ag resource to changes in metal price
• Significant growth opportunities remain