Anteros Metals Confirms Hydrogen Up to 6,500 ppm in Phase 2 Gas Samples; Drilling Continues
St. John's, Newfoundland and Labrador--(Newsfile Corp. - May 27, 2026) - Anteros Metals Inc. (CSE: ANT) ("Anteros" or the "Company") is pleased to report that rush laboratory analyses of gas samples collected during the ongoing Phase 2 deep drilling program at the Seagull Property have confirmed the presence of hydrogen in all samples analyzed to date, with results ranging up to 6,500 ppm hydrogen.
Drill hole WM08-27EXT intersected a pressurized gas occurrence at approximately 825 metres depth within Archean Quetico metasedimentary rocks beneath the Seagull Intrusion. Geological review of the interval identified multiple fractures and joints associated with the gas-bearing zone, supporting an interpretation that gas migration is structurally controlled within the basement rock sequence.
Rush analyses from gas samples collected at the 825-metre interval of Hole WM08-27EXT returned a composition dominated by carbon dioxide up to 88.6%, with minor nitrogen up to 0.76% and up to 0.04% (400 ppm) hydrogen. Methane was absent from the analyzed samples.
A subsequent rush sample from Hole WM00-05EXT located 150 metres to the southwest has assayed 49.5% nitrogen, 44.2% carbon dioxide, 5.6% methane, and 0.65% (6,500 ppm) hydrogen
gas.
The Company also reports that it has now vested its initial 20% interest in the Seagull Property and continues to advance work toward earning up to a 49% interest under the joint venture agreement.
As previously reported on May 15, 2026, drill hole WM08-27EXT encountered a gas occurrence at approximately 825 metres. The occurrence was intersected within Archean Quetico metasedimentary rocks beneath the Seagull Intrusion, within the broader depth range of the previously reported pressurized gas occurrence in RM26-01 during Phase 1 drilling. Subsequent geological review of the interval identified multiple small fractures and joints associated with the gas-bearing zone, supporting the interpretation that gas migration is structurally controlled within the basement rock sequence.
Drilling at WM08-27EXT advanced to approximately 1,200 metres depth before intersecting a subvertical diabase dyke in the Seagull Intrusion. The Company has elected to transition drilling operations to WM00-05EXT in order to utilize the most favourable drill orientation to test the primary, deep (estimated 1400m), low acoustic velocity geophysical target, termed "Big Blue", which is interpreted as a potential source area for the upper sequence gas occurrences observed at Seagull. The Company has therefore elected to transition drilling operations to WM00-05EXT, a historical drill hole previously extended by the Company to approximately 900 metres during Phase 1. WM00-05EXT is favourably oriented to test Big Blue to the west of the interpreted northeast-southwest trending subvertical dyke. WM00-05EXT is currently advancing at a depth of approximately 1,000 metres.

