en.Wedoany.com Reported - Tintina Mining Company (TSXV: TTS) received a C$91 million (approximately US$66 million) investment in June 2026, backed by Japan's Sumitomo Corp. and the Gignac family, to advance its flagship Domeyko Sulfuros copper-gold project in the Atacama Region of northern Chile and consolidate project equity. Following the news, Tintina's share price surged up to 150% to C$1.70, hitting a nearly two-decade high, with the company's market capitalization rising to C$216.3 million (approximately US$156.4 million).
Tintina is a Toronto-based mineral exploration company focused on copper-gold asset development. The Domeyko Sulfuros project is a brownfield copper-gold porphyry deposit with a history of early-stage oxide mining, currently hosting proven and indicated resources of 100.8 million tonnes at 0.35% copper and 0.28 g/t gold, and inferred resources of 256.3 million tonnes at 0.34% copper and 0.24 g/t gold. A preliminary economic assessment released earlier this year outlined a 25-year open-pit mine capable of producing 37,000 tonnes of copper and 57,000 ounces of gold concentrate annually, with an after-tax net present value (8% discount rate) of US$328 million and an initial capital requirement of US$1.28 billion.
Sumitomo Corp. and the Gignac family are expected to establish a new investment vehicle, each contributing C$48 million to purchase the first tranche of subscription receipts, which upon conversion will hold a 25% stake in the company (rising to 38% if all warrants are exercised). The remaining C$43 million will be acquired by a broader group of investors, including C$14 million from cornerstone investor Franco-Nevada. Approximately C$55 million of the raised funds will be used to advance the project toward a final investment decision, with the remaining C$36 million allocated to acquire minority equity interests.
Mathieu Gignac, President of G Mining Services, stated that Domeyko Sulfuros is precisely the kind of opportunity the Gignac family has been seeking—a copper-gold porphyry deposit with a clear development pathway. The completion of this financing will provide critical funding support for the project's subsequent development.
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