Tintina Mines Closes C$91 Million Subscription Receipt Financing to Advance Domeyko Sulfuros Transaction with Strategic Investment from the Gignac Family, Sumitomo Corporation and Franco-Nevada

Tintina Mines Limited has closed a non-brokered private placement of subscription receipts, securing aggregate gross proceeds of approximately C$91 million. The offering was priced at C$0.68 per subscription receipt and was anchored by a newly formed investment vehicle funded equally by Sumitomo Corporation and the Gignac family via G Mining Capital Inc., with cornerstone participation from Franco-Nevada Corporation.

The financing package includes 71,530,000 warrants, comprising 35,515,000 exercisable at C$0.80 for three years and 35,515,000 exercisable at C$1.00 for five years. Upon exchange, the Anchor Investor would hold approximately 25% of issued and outstanding common shares on a non-diluted basis, and approximately 38% on a partially-diluted basis. A four-month and one-day hold period applies under Canadian securities rules.

Net proceeds are held in escrow pending the satisfaction of conditions, primarily the acquisition of the remaining 26.25% minority interest in the Chilean subsidiary Andean Belt Resources SpA (ABR) for US$26.25 million and requisite shareholder approvals. An annual general and special meeting is scheduled for August 21, 2026, to seek shareholder approvals for the offering, the minority acquisition, and management changes.

Tintina Mines Ltd. (TTS) is executing the closing of a C$91 million financing, fulfilling the terms of its June 2, 2026 announcement. The transaction secures tier-1 strategic partners Sumitomo and Franco-Nevada, alongside operational expertise from Gignac and G Mining Services, which validates the February 2026 Preliminary Economic Assessment (PEA) economics. Additionally, the consolidation of 100% ownership of Domeyko Sulfuros removes minority interest friction and aligns stakeholders toward a Final Investment Decision (FID).

The capital raise allocates C$55 million for project advancement toward FID and C$36 million for the minority acquisition, providing a funded path for the next three to five years. Following the initial disclosure, the market had already priced in the transaction. The stock’s recent pullback from $3.50 to $2.50 reflects typical post-announcement profit-taking and the waiting period for escrow release conditions and shareholder approvals.

Tintina Mines Ltd. (TTS) is a Canadian junior mineral explorer focused on the Domeyko Sulfuros copper-gold project in the Atacama region of Chile. The site is a brownfield operation featuring prior oxide mining and exposed sulphide mineralization.

A preliminary economic assessment (PEA) released in February 2026 outlines a 25-year open-pit operation processing 35,000 tonnes per day. This production schedule yields approximately 37,000 tonnes of copper and 57,000 ounces of gold annually. The project’s economic metrics include a pre-tax net present value (NPV) of $560 million and an after-tax NPV of $328 million, calculated at an 8% discount rate. These figures assume a copper price of $4.30 per pound and a gold price of $2,500 per ounce.

The project incorporates a 100% renewable energy strategy utilizing battery storage and processes raw seawater via a 63-kilometer pipeline, a design that eliminates continental water consumption. Current mineral resources stand at 100.8 million tonnes of Measured and Indicated material grading 0.35% copper and 0.28 grams per tonne gold, alongside 256.3 million tonnes of Inferred resources. High-priority exploration targets include the Tricolor and Maria Soledad areas.