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Vancouver, BC – December 2 nd 2025 – TheNewswire - South Atlantic Gold Inc. (TSX-V: SAO) (“South Atlantic” or the “Company”) is pleased to announce the filing of two new mineral exploration tenement applications with the Agência Nacional de Mineração (“ANM”) in Ceará State, Brazil. These applications, covering a combined ~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 CEO 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

• 3D susceptibility models from UAV magnetic surveys have been completed, with higher resolution block inversions (20 m cell size) revealing NE trending structures and step over/flower features consistent with shear related mineralization models.  

• Reduction to pole (RTP) processing has improved source localization, highlighting anomalies in underexplored northern blocks.  

Regional Context

• Initial inversion of government TMI/RTP data has 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, Independência, and Boa Viagem municipalities.  

• Process 48065.800553/2025 01 – 1,992 hectares in Pedra Branca municipality.  

Click Image To View Full Size

Figure 1 –Map of the Claims of Pedra Branca Project including the New Claims (October of 2025).

Sources: 1. CPRM (Brazilian Geological Survey) - Project “Troia–Pedra Branca” integrated geophysical data published in 2015.

2. ⁠ ⁠Historical Soil and Stream Sediment sampling by Unamgem/Noranda‐ Falconbridge (80's to 90's) and Jaguar – MSOL (2007-2011).

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 (P.Geo.), MAUSIMM (CP), the Company’s Exploration Manager who is a Qualified Person as defined by NI 43-101.

About South Atlantic Gold Inc.

South Atlantic is an exploration company engaged in acquiring and advancing mineral properties in the Americas.  For further information, please visit our website at www.southatlanticgold.com .

ON BEHALF OF THE BOARD

Douglas Meirelles, President and CEO

For more information regarding this news release, please contact:

Douglas Meirelles, President and CEO

T: 250-762-5777
Email: ir@southatlanticgold.com

Cautionary Note Regarding Forward-Looking Information

This news release contains statements that constitute “forward-looking Information”, as such term is used in applicable Canadian securities laws.  Such forward-looking information involves known and unknown risks, uncertainties and other factors that may cause the Company’s actual results, performance or achievements, or developments in the industry to differ materially from the anticipated results, performance or achievements expressed or implied by such forward-looking information. Forward-looking information includes statements that are not historical facts and are generally, but not always, identified by the words “expects,” “plans,” “anticipates,” “believes,” “intends,” “estimates,” “projects,” “potential” and similar expressions, or that events or conditions “will,” “would,” “may,” “could” or “should” occur. Forward-looking information in this news release includes the Company’s strategies and the Company’s abilities to execute such strategies, the Company’s expectations for the Pedra Branca project, and the Company’s future plans and objectives.

Although the Company believes the forward-looking information contained in this news release is reasonable based on information available on the date hereof, by its nature forward-looking information involves assumptions and known and unknown risks, uncertainties and other factors which may cause our actual results, level of activity, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking information.

Examples of such assumptions, risks and uncertainties include, without limitation, assumptions, risks and uncertainties associated with general economic conditions; adverse industry events; the receipt of required regulatory approvals and the timing of such approvals; that the Company maintains good relationships with the communities in which it operates or proposes to operate, future legislative and regulatory developments in the mining sector; the Company’s ability to access sufficient capital from internal and external sources, and/or inability to access sufficient capital on favorable terms; mining industry and markets in Canada and generally; the ability of the Company to implement its business strategies; competition; the risk that any of the assumptions prove not to be valid or reliable, which could result in delays, or cessation in planned work, risks associated with the interpretation of data, the geology, grade and continuity of mineral deposits, the possibility that results will not be consistent with the Company’s expectations, as well as other assumptions risks and uncertainties applicable to mineral exploration and development activities and to the Company, including as set forth in the Company’s public disclosure documents filed on the SEDAR+ website at www.sedarplus.ca.

THE FORWARD-LOOKING INFORMATION CONTAINED IN THIS NEWS RELEASE REPRESENTS THE EXPECTATIONS OF THE COMPANY AS OF THE DATE OF THIS NEWS RELEASE AND, ACCORDINGLY, IS SUBJECT TO CHANGE AFTER SUCH DATE. READERS SHOULD NOT PLACE UNDUE IMPORTANCE ON FORWARD-LOOKING INFORMATION AND SHOULD NOT RELY UPON THIS INFORMATION AS OF ANY OTHER DATE. WHILE THE COMPANY MAY ELECT TO, IT DOES NOT UNDERTAKE TO UPDATE THIS INFORMATION AT ANY PARTICULAR TIME EXCEPT AS REQUIRED IN ACCORDANCE WITH APPLICABLE LAWS.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies of the TSX Venture Exchange ) accepts responsibility for the adequacy or accuracy of this release.

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