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Vancouver, BC – June 5, 2025 – CoTec Holdings Corp. (TSXV:CTH)(OTCQB:CTHCF) (“CoTec” or the “Company”) is thrilled to announce a pivotal achievement by its investment, Ceibo Inc. (“Ceibo”). The company has successfully produced copper cathodes at a demonstration plant, a landmark event that validates Ceibo’s groundbreaking copper sulfide leaching technology. This success was realized in collaboration with Compañía Minera San Gerónimo (“CMSG”), a leading Chilean copper producer.

This milestone represents a major leap forward in the processing of copper sulfide concentrates, a significant challenge in the global copper industry. Traditional methods for extracting copper from sulfide ores are energy-intensive and often environmentally problematic. Ceibo’s innovative leaching technology offers a potentially cleaner and more efficient alternative, promising to revolutionize copper production practices.

The Significance of Copper Cathode Production

Successfully producing copper cathodes – the refined form of copper used in countless applications – from sulfide concentrates is a key indicator of the technology’s viability. It demonstrates that Ceibo’s process can effectively extract and purify copper to meet industry standards. This achievement significantly de-risks the technology and paves the way for potential commercial-scale implementation.

Partnership with CMSG – A Strategic Advantage

The partnership with CMSG has been instrumental to Ceibo’s success. CMSG's expertise in copper mining and processing, combined with Ceibo’s technological innovation, has created a powerful synergy. Access to CMSG’s resources and operational experience has accelerated the development and validation of the leaching process.

Looking Ahead: Commercialization and Impact

CoTec and Ceibo are now focused on scaling up the technology and exploring commercialization opportunities. The successful demonstration plant results provide a strong foundation for securing partnerships and attracting investment to support the next phase of development. If widely adopted, Ceibo’s technology has the potential to:

• Reduce the environmental impact of copper mining.
• Lower production costs for copper.
• Unlock previously uneconomical copper sulfide deposits.

“This is a truly exciting moment for CoTec and our investors,” said [Quote from CoTec CEO or relevant executive – *This would be added with a real quote*]. “Ceibo’s achievement underscores our commitment to supporting innovative technologies that can transform the mining industry and create long-term value.”

About CoTec Holdings Corp.

CoTec Holdings Corp. is a strategic investor focused on acquiring and developing disruptive technologies in the natural resource sector. The company’s investment in Ceibo is a testament to its commitment to supporting innovation and driving sustainable growth.

About Ceibo Inc.

Ceibo Inc. is a technology company focused on developing and commercializing innovative solutions for copper extraction and processing. Its proprietary leaching technology offers a more efficient and environmentally friendly alternative to traditional methods.

About Compañía Minera San Gerónimo

Compañía Minera San Gerónimo is a leading Chilean copper producer with a long history of operational excellence and a commitment to sustainable mining practices.

Cautionary Note Regarding Forward-Looking Statements

This press release contains forward-looking statements that involve risks and uncertainties. Actual results may differ materially from those expressed or implied in these statements. Factors that could cause actual results to differ materially include, but are not limited to, changes in commodity prices, operational risks, regulatory changes, and market conditions. CoTec disclaims any intention or obligation to update or revise any forward-looking statements.