Mr. Michael Bennett reports

ALTAMIRA GOLD WELCOMES LEADING AUTHORITY ON PORPHYRY DEPOSITS DR. RICHARD SILLITOE AS TECHNICAL ADVISOR

Altamira Gold Corp. has appointed Dr. Richard Sillitoe as technical adviser to support exploration work across its Cajueiro porphyry gold district in Brazil.

Dr. Sillitoe is recognized as one of the world's leading authorities on porphyry and epithermal systems. During more than five decades as an independent consultant, he has worked with mining companies, international agencies and government groups in over 100 countries. His field-based approach to deposit modelling has contributed to the discovery and advancement of major copper and precious metal deposits around the world.

A prolific contributor to economic geology, Dr. Sillitoe has written more than 130 technical papers and several books documenting key discoveries throughout the circum-Pacific region. His contributions have earned industry awards in Europe, Australia and the Americas, including the Penrose Gold Medal from the Society of Economic Geologists, where he served as president from 1999 to 2000.

Dr. Sillitoe earned his PhD from the University of London in 1968. He began his career with the Geological Survey of Chile before returning to London for a Shell postdoctoral fellowship at the Royal School of Mines. He later established a global consulting practice that has fundamentally shaped modern understanding of porphyry and epithermal systems.

Chief executive officer Mike Bennett commented: "We are very pleased to have Dick join us at a key stage for the company. We have multiple gold prospects in a demonstrated porphyry district at Cajueiro. His knowledge of mineralized porphyry and epithermal systems is unmatched, and his perspective will help us refine our targeting and advance the porphyry potential we are seeing across our Cajueiro district. 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."

Drilling update

Diamond drilling with two rigs is currently in progress at both the Maria Bonita deposit and the Cajueiro Central deposit.

Qualified person

Guillermo Hughes, FAIG, MAusIMM, a consultant to the company as well as a qualified person as defined by National Instrument 43-101, supervised and approved the preparation of the technical information in this news release.

About Altamira Gold Corp.

The company is focused on the exploration and development of gold projects within western-central Brazil, strategically advancing five projects spanning over 100,000 hectares within the prolific Juruena gold belt -- an area that has historically yielded over six million ounces of placer gold. The company's advanced Cajueiro project contains two gold deposits. The central area comprises National Instrument 43-101 resources of 5.66 million tonnes at 1.02 grams per tonne gold for a total of 185,000 ounces in the indicated resource category and 12.66 million tonnes at 1.26 grams per tonne gold for a total of 515,000 ounces in the inferred resource category. In addition, the Maria Bonita gold deposit comprises additional open-pit indicated resources of 24.19 million tonnes at 0.46 gram per tonne for a total of 357,800 and inferred resources of 25.64 million tonnes at 0.44 gram per tonne for a total of 362,400 ounces.

Continuing exploration and fieldwork at Cajueiro indicate the presence of multiple porphyry gold systems, reinforcing its potential for district-scale development. These hard-rock gold sources align with historical alluvial gold production, highlighting the region's exceptional gold endowment and potential scalability. With two independently established mineral resources, a highly prospective geological setting and a record of significant discoveries, the company is well positioned to unlock further value across its extensive land package.

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