Mr. Douglas Meirelles reports

SOUTH ATLANTIC GOLD ACQUIRES ADDITIONAL 4.2K HECTARES OF UAV MAGNETIC SURVEY DATA AND APPOINTS MR. MATT REES, P.GEO., AS TECHNICAL ADVISOR TO THE BOARD

South Atlantic Gold Inc. has outlined two important developments: the acquisition of an extra 4,200 ha (hectares) of UAV (unmanned aerial vehicle) magnetic survey data followed by a comprehensive review of the cumulative total of all UAV data acquired to date (totalling 6,800 ha) at its Pedra Branca project in Ceara state, Brazil, and the appointment of Matt Rees, PGeo, as technical adviser to the board.

Douglas Meirelles, president and chief executive officer of South Atlantic Gold, commented:

"We are excited to welcome Matt to our team. His 13 years of leadership at Iamgold, combined with his global exploration expertise will be invaluable as we advance Pedra Branca. At the same time, the recently acquired additional UAV magnetic survey data provides us with a powerful new data set that, under the guidance of our technical committee, will sharpen our target definition and accelerate our path toward discovery and development."

UAV magnetic survey review under way

As part of its strategy to delineate priority drill targets and design the next exploration program at Pedra Branca, the company has commenced a detailed review of the UAV magnetic survey data:

• Magnetic data reprocessing: The geophysics team has begun reprocessing the entire 6,800 hectares of UAV magnetic survey data using low latitude algorithms tailored to the region. This work is enhancing structural interpretation and highlighting cross cutting features of interest, and represents a small fraction survey area, across the company's district scale Pedra Branca land package of more than 48,000 hectares
• Integration with 3-D modelling: The reprocessed data is being incorporated into the Leapfrog 3-D geological model, enabling refined drill targeting and evaluation of mineralized continuity at depth.
• Technical committee oversight: South Atlantic's technical committee has identified priority areas where magnetic anomalies align with geochemical trends and structural corridors, warranting follow-up mapping, sampling and potential drill testing.
• Advancing the oxide starter concept: In parallel, the company is reviewing historical metallurgical data to assess the potential for a near-surface oxide starter operation, while continuing to evaluate deeper, high-grade orogenic gold targets.

Appointment of Matt Rees, PGeo, as technical adviser

Mr. Rees brings over four decades of international exploration and operational experience. He holds a MSc in geology from the University of Saskatchewan (1992) and is a registered professional geoscientist (PGeo). Previously he had been with Iamgold Corp. since 2012, serving as manager of New Opportunities (2012 to 2018) and subsequently as chief geologist (2018 to 2025). His career also includes senior technical roles and advisory positions with several companies since 1989. Mr. Rees is also an active member of the Society of Economic Geologists (SEG). In 2023 he also assumed the chair of the Industry Advisory Board to the Mineral Exploration Research Centre (MERC) under the Metal Earth (ME) project, part of the Harquail School of Earth Sciences at Laurentian University.

Next steps

• Completion of magnetic reprocessing and QA/QC (quality assurance/quality control);
• Integration of results into Leapfrog for updated 3-D targeting;
• Field validation through mapping, soil and stream-sediment sampling;
• Review of historical drill core for additional sampling opportunities;
• Definition of priority drill targets for the next exploration program at Pedra Branca.

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.

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