Eastport Reports 110.8m at 0.43% Cu at Nak-Main and Launches 291 km2 Gravity Survey at 30km Thole-Copper Snake Copper in Soil Anomaly

Phase 1 drilling confirms continuity of copper mineralisation at Nak-Main and strike extension, reinforcing the structural mineralisation control and data sets that can be applied to underexplored areas within the 1,845 km 2 Matsitama Copper Project license area.

Follow-up work at Nakalakwana will now focus on structural mapping and geophysics to further target future infill drill programs over a now 10km strike length.

A 291 km 2 Gravity Survey has commenced over the 30km-long Thole to Copper Snake soil anomaly, Gravity is being implemented to assist in identifying dense rock and deeper structures.

Vancouver, British Columbia--(Newsfile Corp. - September 28, 2026) - Eastport Critical Metals Corp. (TSXV: EVI) (OTCQB: EVIIF) ("Eastport" or the "Company") is pleased to announce the Company the commencement of a large scale gravity geophysical survey to cover the 30 km trend from Thole to Copper Snake (Figure 1), and the final assay results from Nakalakwana drilling at the Matsitama Copper Project.

Daniel Major, CEO, commented;

"The final assay results at Nakalakwana ("Nak"), have generated key deliverables that include; enabling the company to qualify the existing resource and any future MREs under NI 43-101 compliance, prove thick continuous zones of copper mineraliation with multiple holes of >100m of copper mineralisation and almost 10x the strike length relative to the Nak-Main at ~1.3km in length.

The above represents a footprint of less than 1% of our total license area at Matsitama, this is to say that over an area of less than 1% we have a district scale copper target with an existing resource, grade and considerable exploration potential to scale Nak-Main.

This is exactly why today we are announcing the commencement of the Gravity survey at Thole to Copper Snake. As an explorer we are in the privileged position t