South Atlantic Gold Advances Induced Polarization Survey. Results Indicate Large, Stacked Mineral System at Pedra Branca, Brazil

About this update from South Atlantic Gold, Inc.

Kelowna, British Columbia – TheNewswire - June 30, 2026 — SOUTH ATLANTIC GOLD INC. (TSX-V: SAO) (OTC Pink: JLRRF) ("South Atlantic" or the "Company") provides an update on its 5,000-metre Phase III diamond drilling and induced polarization / resistivity ("IP") geophysical survey program at the 100%-owned Pedra Branca Gold Project in Ceará State, northeast Brazil. Preliminary IP data demonstrated chargeability zones in disseminated sulphide-zones that coincide with gold mineralization logged in the drill core, providing a clear path and new tool for future discoveries. 1. Highlights 1) Induced Polarization & Resistivity (IP) Survey is providing rapid exploration method for gold discovery. Preliminary data reveals chargeability responses that appear spatially coincident with the sulphide-bearing zones (predominantly pyrrhotite) logged in the drill core, extending along strike and remaining open in all directions. — As a result, the Company now has a proven exciting new method for mapping the mineral system. a) New and never-before tested additional areas for follow-up. (See Figure 1. Chargeability reflects sub-surface sulphide content). There areseveral chargeability zones to the east and parallel to the known mineralization zone that is totally novel to our exploration team. (See Figure 2) b)The IP survey will also be expanded and used to test other targets. Given this early success - the IP survey will be expanded at the current target of Queimadas and moved to test Igrejinha and Mirador targets. 2) Program advancing — seven holes complete, an eighth in progress, with further sample batches to the laboratory. Drilling has completed seven holes with an eighth in progress for approximately 1,503 metres of HQ-diameter core. The first sample batch (677 samples covering the first two completed holes) has been submitted to the laboratory and assayed with further sample batches being prepared for dispatch. a) First hole assayed - Deepest gold intercept identified at Queimadas – ever. The first hole (26DDQUE001) intersected gold mineralization at approximately 231 meters downhole — the deepest gold intercept identified at Queimadas to date, below the roughly 201-metre maximum depth of previous drilling — assaying 0.5 metres at 0.524 g/t Au from 231.0 metres (core length, not true width) (See Figure 1). b) Drilling campaign is performing well. Drill-core loggi...

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