CoTec Announces Updated Mineral Resource and Positive Preliminary Economic Assessment for the Lac Jeannine Iron Tailings Project, Québec, Canada

VANCOUVER, BC / ACCESS Newswire / May 20, 2026 / CoTec Holdings Corp. (TSXV:CTH)(OTCQB:CTHCF) ("CoTec" or the "Company") is pleased to announce an updated independent Preliminary Economic Assessment ("2026 PEA") for the Lac Jeannine Iron Tailings Project, Québec, Canada ("Lac Jeannine", or the "Project") which includes a new Mineral Resource Estimate (the "2026 MRE") that was developed following the August 2025 drilling programi and is consistent with the previous PEA and Technical Report filed in 2024 ("2024 PEA").ii The 2026 MRE was prepared byMinéralis Consulting Services ("Minéralis") and the 2026 PEA by independent experts Addison Mining Services Ltd., Axe Mining Solutions Limited, Soutex Inc, JPL GeoServices Inc. and other independent experts.