Mr. Douglas Meirelles reports

SOUTH ATLANTIC GOLD EXPANDS PEDRA BRANCA LAND PACKAGE WITH TWO NEW TENEMENT FILINGS AND ADVANCES MAGNETIC INVERSION & STRUCTURAL TARGETING

South Atlantic Gold Inc. has filed two new mineral exploration tenement applications with the Agencia Nacional de Mineracao in Ceara state, Brazil. These applications, covering a combined approximately 3,970 hectares, expand the company's Pedra Branca land package to over 52,000 hectares and capture ground directly along trend with priority magnetic and structural features.

Douglas Meirelles, president and chief executive officer of South Atlantic Gold, commented: "Over the past 60 days, our structural analysis has already revealed new potential targets in previously untested areas. Acting quickly, we secured two additional tenements that strengthen our position and further consolidate Pedra Branca as a true district-scale opportunity. In parallel, our technical team is advancing the magnetic inversion and Leapfrog integration, refining our structural interpretation and bringing us closer to defining priority drill targets."

Technical progress

Magnetic inversion:

• Three-dimensional susceptibility models from unmanned aerial vehicle magnetic surveys have been completed, with higher-resolution block inversions (20-metre cell size) revealing northeast-trending structures and stepover/flower features consistent with shear-related mineralization models.
• Reduction to pole processing has improved source localization, highlighting anomalies in underexplored northern blocks.

Regional context:

• Initial inversion of government TMI/RTP data have been completed, with higher resolution inversion pending.
• Regional structures appear to align with project-scale anomalies, reinforcing the broader exploration potential.

New tenements:

• Process 48065.800552/2025 59 -- 1,978 hectares across Pedra Branca, Independencia and Boa Viagem municipalities;
• Process 48065.800553/2025 01 -- 1,992 hectares in Pedra Branca municipality.

Qualified person's statement

The scientific and technical information that forms the basis for parts of this news release was reviewed and approved by Marcelo Antonio Batelochi (PGeo), MAusIMM (CP), the company's exploration manager who is a qualified person as defined by National Instrument 43-101.

About South Atlantic Gold Inc.

South Atlantic is an exploration company engaged in acquiring and advancing mineral properties in the Americas.

We seek Safe Harbor.