Artemis Gold Agrees to Acquire Vista Gold, Adding an Advanced Stage Gold Development Asset in Australia

Artemis Gold Inc. (TSXV: ARTG) has signed a definitive arrangement agreement to acquire 100% of Vista Gold Corp. (VGZ) through a court-approved plan of arrangement under the Business Corporations Act (British Columbia). The transaction is all-stock, with consideration set at 0.0966 Artemis common shares per Vista common share, involving no cash and no new debt. The implied consideration is US$2.83 per Vista share, resulting in a total transaction value of approximately US$427 million on a 100% basis. This represents a premium of 29% to the 20-day volume-weighted average price (VWAP) and 25% to the last closing price, both measured to September 18, 2026.

Pro forma ownership will see Artemis shareholders holding approximately 95% of the combined entity, while Vista shareholders will hold approximately 5%. This excludes Artemis’s existing 4.95% stake in Vista, which Artemis intends to cancel upon completion. The acquisition centers on the Mt Todd gold project in the Northern Territory, Australia, which holds 9.1 million ounces of Measured and Indicated resources plus 1.4 million ounces of Inferred resources. Key permits for a 50,000 tonnes per day (tpd) processing facility have previously been received for the site.

Artemis stated that Blackwater Phase 1A and EP2 remain the priority, with construction spend at Mt Todd not expected before the completion of Blackwater EP2, targeted for mid-2028. The company intends to advance Mt Todd at a 50,000 tpd processing rate, aligned with previously granted permits, as part of a pathway to more than 1,000,000 ounces of annual gold production. Mt Todd is located approximately 290 km southeast of Darwin and 56 km by road northwest of Katherine. It sits on land owned by the Jawoyn Association Aboriginal Corporation under an agreement permitting development. Prior mining and milling at the site ceased in 2001. Brownfield infrastructure includes a paved road, nearby rail, and a gas pipeline. Vista holds four mining leases covering 55 km² and four exploration licences covering 1,337 km², with multiple gold, copper, tin, and tungsten occurrences along a trend exceeding 25 km to the northeast.

The transaction requires approval from 66 2/3% of votes cast by Vista shareholders, court approval, and regulatory clearance from Australia’s Foreign Investment Review Board (FIRB), the Northern Territory Ministerial Consent, the SEC, TSX, and TSXV. A proxy statement is scheduled to be mailed in November 2026, with a shareholder meeting planned for December 2026. Completion is expected in January 2027. Deal protections include a non-solicitation covenant, Artemis’s right to match a Superior Proposal, and an US$18 million termination fee payable by Vista under customary circumstances.

The Vista Special Committee unanimously recommended the deal, and the Vista Board unanimously approved and recommended it. Fairness opinions were provided by CIBC Capital Markets and ATB Cormark. Vista directors and senior officers have entered into customary voting support agreements. Advisors for Artemis include BMO (financial), Blake Cassels, and Paul Weiss (legal). Advisors for Vista include CIBC (financial), Stikeman Elliott, and Davis Graham & Stubbs (legal). Vista’s standalone financial context in the release cited a current market capitalization of US$341 million, with US$50 million in cash and no debt as of June 30, 2026, though filed financials show US$49.536 million.

Vista Gold Corp. (VGZ) has agreed to be acquired by Artemis Resources, a move that resolves the company’s long-standing challenge of self-funding the development of its Mount Todd gold project. The transaction marks the end of Vista’s standalone equity story, shifting its status from an unfunded developer to a minority interest in an intermediate producer.

The acquisition follows a timeline of events that began with the delivery of the 2025 Feasibility Study for Mount Todd on November 12, 2025. The study outlined a 15,000 tonnes per day operation with an after-tax NPV5% of US$1.1 billion, a 27.8% internal rate of return, and a 2.7-year payback period at US$2,500/oz gold. The project was modeled with US$13.7 million in cash and no debt. In January 2026, management targeted detailed engineering and design to begin in early 2027, with permit modification approvals anticipated by the end of that year.

To support operations, Vista raised US$44.85 million gross through a marketed offering between February 25 and March 9, 2026, resulting in approximately US$42.0 million net proceeds. By the end of the fiscal year 2025, the company reported a net loss of US$7.5 million, or US$0.06 per share, compared to a net income of US$11.2 million in fiscal 2024, which was driven by a US$16.9 million non-operating gain on a royalty interest grant. At that time, year-end cash stood at US$13.6 million prior to the capital raise.

Subsequent quarters showed continued losses and shifting timelines. In the first quarter of 2026, cash rose to US$52.7 million post-offering, but the company posted a net loss of US$3.1 million. By the second quarter, cash had decreased to US$49.5 million with a net loss of US$3.0 million. While the feasibility study was delivered on schedule, permitting milestones slipped; initial guidance for final approvals by the end of 2026 was revised in July 2026 to anticipate final approvals in 2027.

The deal structure involves an all-stock exchange with no cash component. Vista shareholders will receive Artemis shares valued at US$2.83 per Vista share at the reference date. The exchange ratio is fixed, meaning the realized value will float with Artemis’s share price and deal-completion probability until January 2027. The transaction values the company at approximately US$427 million, which represents roughly 40% of the US$1.06–1.1 billion after-tax NPV5% indicated in the 2025 feasibility study at US$2,500/oz gold.

Artemis intends to advance the Mount Todd project at a capacity of 50,000 tonnes per day, significantly higher than the 15,000 tonnes per day modeled in the feasibility study. No capital estimate, study, or economic analysis for the larger scale operation has been provided. The release asserts alignment with previously granted permits but does not provide cost or returns statements for the proposed expansion.

Vista’s balance sheet remains clean with no debt, US$49.5 million in cash, and working capital of approximately US$48.5 million. The company’s management had previously stated that current cash was insufficient for capital expenditures and that long-term construction would require external financing. The acquisition transfers this financing burden to Artemis.

Deal certainty is supported by independent fairness opinions from two dealers, unanimous board recommendations, and insider voting support agreements. The transaction requires a 66 2/3% shareholder threshold and regulatory approvals, including FIRB and Northern Territory Ministerial Consent.

Data discrepancies exist between the release and market records. The release states the US$2.83 implied consideration represents a 25% premium to the last closing price, which would require a last close of approximately US$2.26. However, provided price series show a last close of US$3.20 on September 18, 2026. Additionally, the release cites a market capitalization of US$341 million and an investor presentation value of US$339.9 million at a US$2.33 share price on September 3, 2026, while the price series indicates a close of US$3.20 on that date. If the price series is accurate, the announced consideration represents a discount to the last trade.

Vista Gold Corp. is a development-stage gold company listed on the NYSE American and TSX under the ticker VGZ. It holds a 100% interest in the Mt Todd gold project in the Northern Territory of Australia through Vista Gold Australia Pty Ltd. The company currently has no revenue and no producing assets.

The Mt Todd project is located approximately 290 km southeast of Darwin and 56 km by road northwest of Katherine. The site sits on land owned by the Jawoyn Association Aboriginal Corporation, with an agreement in place governing land use and development. The brownfield site features prior mining and milling operations that closed in 2001, along with existing infrastructure including a paved access road, powerline, natural gas pipeline, freshwater reservoir, and tailings storage facilities. The company controls a large regional land package comprising four mining leases covering 55 km² and four exploration licences covering 1,337 km², which the release states as more than 1,300 km². This package spans a northeast trend of more than 25 km containing gold, copper, tin, and tungsten occurrences, though modern exploration has been limited.

Mineral resources are estimated as of July 25, 2025, using a 0.4 g/t cut-off for Batman and Quigleys and no cut-off for the Heap Leach Pad, within a US$1,950/oz pit shell. Measured and Indicated resources total approximately 9.1 moz, broken down as follows:

• Batman: 316,409 kt at 0.83 g/t for 8,457 koz
• Quigleys: 10,667 kt at 1.26 g/t for 433 koz
• Heap Leach Pad: 13,352 kt at 0.54 g/t for 232 koz

Inferred resources total approximately 1.4 moz, detailed as:

• Batman: 54,338 kt at 0.78 g/t for 1,369 koz
• Quigleys: 2,761 kt at 0.71 g/t for 63 koz

Mineral reserves are reported as Proven and Probable at 158,623 kt at 0.97 g/t for 4,959 koz, according to the investor presentation. While the presentation’s summary slide references approximately 5.2 moz in reserves, the detailed reserve table reports 4,959 koz; the detailed table is the preferred source.

The 2025 Feasibility Study outlines economics for a 15,000 tpd operation at a gold price of US$2,500/oz. The project has a 30-year mine life with initial capital of US$425M and sustaining capital of US$256M over the life of mine. Net reclamation and closure costs are estimated at US$176M. The study projects an after-tax NPV5% of US$1,060M, an after-tax IRR of 27.8%, and an after-tax payback of 2.7 years. Average annual production is 153 koz in years 1–15 and 146 koz over the life of mine. Average AISC is US$1,449/oz in years 1–15 and US$1,499/oz over the life of mine.

Price sensitivity analysis presented in the study shows that at US$3,300/oz, the NPV5% rises to US$2.2B with an IRR of 44.7%. At US$4,500/oz, the NPV5% reaches US$3.8B with an IRR of 66.3%. A Q2 2026 transcript, cited for prior-period context and not part of today’s release, noted approximately US$300M in annual free cash flow and approximately US$1,500/oz AISC at a US$3,300/oz gold price, alongside a NAV of US$14.89 per share at that price.

All economics above apply to a 15,000 tpd operation. Artemis states it intends to advance Mt Todd at 50,000 tpd. These are different projects with materially different capital requirements, and the US$425M capex and US$1.06B NPV figures do not transfer to a 50,000 tpd build. No study or capital estimate for that scale is provided.