Altamira Gold Welcomes Leading Authority on Porphyry Deposits Dr. Richard Sillitoe as Technical Advisor

Executive Summary

• Altamira Gold Corp. appointed Dr. Richard Sillitoe, a world‑renowned porphyry and epithermal systems expert, as technical advisor to its Cajueiro Porphyry Gold District in Brazil.
• The appointment is intended to sharpen target modelling and accelerate advancement of multiple gold prospects within the district.
• Ongoing diamond drilling continues with two rigs at the Maria Bonita and Cajueiro Central deposits, supporting follow‑up and expansion programs.

Key Details

• Technical Advisor Appointment – Dr. Richard Sillitoe joins Altamira as a technical advisor; his expertise spans 50+ years, >100 countries, and includes authorship of 130+ papers and the Penrose Gold Medal.
• Role & Objectives – Dr. Sillitoe will support exploration work across the Cajueiro Porphyry Gold District, helping refine targeting, advance porphyry potential, and guide follow‑up drilling at newly discovered zones.
• CEO Comment – “We are very pleased to have Dick join us… his perspective will help us refine our targeting and advance the porphyry potential we are seeing across our Cajueiro District.” (Mike Bennett, President & CEO)
• Drilling Update – Diamond drilling is active with two rigs at:
• Maria Bonita deposit (open‑pit indicated resources of 24.19 Mt @ 0.46 g/t Au = 357,800 oz; inferred 25.64 Mt @ 0.44 g/t Au = 362,400 oz)
• Cajueiro Central deposit (indicated resources of 5.66 Mt @ 1.02 g/t Au = 185,000 oz; inferred 12.66 Mt @ 1.26 g/t Au = 515,000 oz)
• Qualified Person – Guillermo Hughes, FAIG and M Aus IMM., supervised and approved the technical information in this release per NI 43‑101 standards.
• Company Context – Altamira’s Cajueiro project sits within Brazil’s Juruena Gold Belt, an area with historic production of >6 million oz placer gold; the district hosts multiple porphyry systems poised for district‑scale development.

Notable Quotes

“We have multiple gold prospects in a demonstrated porphyry district at Cajueiro… With two rigs currently drilling on site, we will continue follow‑up drilling of the new discoveries and move ahead with expansion drilling at the Maria Bonita and Central gold deposits.” – Mike Bennett, President & CEO

All boilerplate, forward‑looking statements, and disclaimer text have been omitted for brevity.