Luca Mining’s entire market value was C$313.75 million on September 12, according to Morningstar, or roughly US$223 million at the conversion rate in Luca’s own release. The mine it agreed to buy on September 21 is priced at up to US$385 million. The buyer is smaller than the purchase.
Luca Mining Signs Definitive Deal for Capstone’s Cozamin Mine
Luca Mining Corp. (TSXV: LUCA; OTCQX: LUCMF; FSE: Z68) signed a definitive share purchase agreement with Capstone Copper Corp. (TSX: CS; ASX: CSC) to acquire 100% of the Cozamin mine in Zacatecas, Mexico. The upfront price is US$290 million, split between US$275 million in cash and US$15 million in new Luca shares issued to Capstone at closing. A further US$35 million is due on the first anniversary of closing, in cash or shares at Luca’s election. Up to US$60 million more depends on copper.
Cozamin is an underground copper-silver operation with 20 years of continuous production. Its flotation plant can handle up to 4,400 tonnes per day and has averaged about 3,670 over the past five years; the release attributes that gap to mine output rather than mill capacity. Capstone’s historical reserve-based mine plan runs to 2030. Luca has not adopted that plan and says it intends to spend well beyond the roughly US$2 million a year recently put into exploration at Cozamin.
Based on current consensus estimates, Luca expects the acquisition to more than double its 2027 production profile. The company put combined 2027 net revenue at about US$598 million, against US$177 million for Luca alone in 2025. Those 2027 figures are projections built from street consensus for Luca and Visible Alpha estimates for Cozamin.
Nothing has closed. Luca needs approval from Mexico’s Federal Antitrust Commission and the TSX Venture Exchange, and it expects completion in the fourth quarter. The US$275 million cash payment is calculated on a cash-free, debt-free basis as of an October 31 lock-box date, the balance-sheet date the price is fixed from, and Luca owes Capstone a US$700,000 ticking fee for every month closing runs past it. Cozamin is also Luca’s second pending deal this month: on September 17 it agreed to acquire the El Barqueño project in Jalisco from Agnico Eagle Mines Limited (NYSE: AEM; TSX: AEM), likewise expected to close in Q4 2026 subject to approvals.
Cozamin’s Copper-Linked Payments Start at US$7.00 per Pound
Capstone can collect the contingent money in up to three annual installments, one each for 2027, 2028 and 2029, based on the average LME copper cash price in that calendar year. The smallest payment, US$10 million, is triggered by an annual average of at least US$7.00 per pound. The largest is US$20 million and requires US$8.51 or higher, with a US$15 million middle tier starting at US$7.76. The tiers do not stack.
The London Metal Exchange quotes copper per tonne, while the agreement sets its thresholds per pound; US$7.00 per pound converts to roughly US$15,432 per tonne. A year that averages below that line pays Capstone nothing.
Luca’s US$300 Million Cozamin Financing Adds Shares and Debt
Luca disclosed binding agreements for a US$300 million financing package. The biggest piece is a bought deal, a placement in which the underwriters commit to buy the full issue themselves, of 155 million subscription receipts at C$1.00 each, for gross proceeds of C$155 million, or about US$110 million. National Bank Financial leads the syndicate. Each receipt converts into one Luca share only when the acquisition’s conditions are met; until then, the money sits in escrow.
Wheaton Precious Metals Corp. (TSX: WPM; NYSE: WPM; LSE: WPM) and Taurus Mining Finance Fund No. 3 are buying another C$56 million, roughly US$40 million, of receipts at the same price. Trafigura Pte Ltd. has committed an equity backstop of up to US$75 million, capped at 19.9% of Luca’s pro forma voting securities.
Together, the two placements come to 211 million receipts. Morningstar lists 275.22 million Luca shares outstanding as of September 12, so the receipts alone equal about 77% of the existing count. The US$15 million in stock going to Capstone comes on top of that, and Luca may also choose to settle the US$35 million deferred payment in shares.
The debt is a US$125 million senior secured acquisition facility from Taurus and Macquarie Bank Limited with a four-year term. Tranche A, US$75 million, carries 8.5% annual interest. Tranche B, US$50 million, is priced at SOFR, the benchmark US Secured Overnight Financing Rate, plus 4.9%. Principal comes due in equal quarterly installments starting six months after closing, and the lenders will receive 21.5 million warrants exercisable at C$1.20 per share for four years.
Wheaton Adds a Second Silver Stream at Cozamin
Streams already shape Cozamin’s economics. A stream is an upfront payment made in exchange for a fixed share of a mine’s future metal output, delivered at a low ongoing price. Capstone sold Wheaton one on Cozamin in December 2020 for US$150 million; it takes 50% of refined silver, dropping to 33% after 10 million ounces are delivered, and 3.4 million ounces had been delivered as of June 30, 2026.
Luca’s new US$25 million commitment from Wheaton layers another 15% of refined silver on top until 500,000 ounces have been delivered. Wheaton pays 10% of the spot price for each ounce, and that payment shrinks toward zero if silver falls below US$60 per ounce. Until the second stream is filled, 65% of Cozamin’s refined silver goes to Wheaton.
Copper gets a hedge. As part of the loan package, Luca will enter forward LME copper contracts with Macquarie covering 25% of Cozamin’s forecast copper sales for 36 months starting in 2027.
Cozamin Reserves Stay Historical Until Luca Files a Technical Report
The resource and reserve figures in Luca’s release were prepared by Capstone, with an effective date of December 31, 2025. Luca is treating them as historical estimates under NI 43-101, the Canadian disclosure standard for mineral projects. A qualified person working for Luca has not done enough work to classify them as current, and the release states they should not be relied upon. Luca has not verified them.
A supporting technical report is due within 180 days of the September 21 announcement, or by another date the TSXV requires. After closing, Luca plans to prepare a current resource and reserve estimate and a new mine plan for Cozamin.
Luca Targets Q4 Cozamin Close, February 28, 2027 Escrow Deadline
Luca’s bought-deal placement is expected to close on or about October 14, 2026. The lock-box date is October 31. The acquisition itself is targeted to close in the fourth quarter of 2026.
Under the subscription receipt terms, the escrow release deadline is 5:00 p.m. Toronto time on February 28, 2027, extendable by two further one-month periods where regulatory approvals are outstanding; receipts not released by the final deadline are cancelled and the funds returned. Receipts and the shares they convert into carry a four-month-and-one-day hold period from the placement’s closing. The first measurement period for Capstone’s copper-linked payments is calendar 2027.
Sources
- Newswire.ca (CNW): Luca Mining Announces Acquisition of the Cozamin Mine, Creating a Leading Polymetallic Producer, September 21, 2026
- Capstone Copper Corp.: Capstone Copper Announces Sale of Cozamin for Total Consideration of up to $385 Million, September 21, 2026
- Morningstar: Luca Mining Corp (LUCA) Stock Price Quote, market data as of September 12, 2026
Editorial Disclosure
This article is based on Luca Mining Corp.’s September 21, 2026 news release distributed by Newswire.ca (CNW), Capstone Copper Corp.’s September 21, 2026 release, and third-party market data from Morningstar as of September 12, 2026. Securities named: Luca Mining Corp. (TSXV: LUCA; OTCQX: LUCMF; FSE: Z68), where FSE is the Frankfurt Stock Exchange; Capstone Copper Corp. (TSX: CS; ASX: CSC); Wheaton Precious Metals Corp. (TSX: WPM; NYSE: WPM; LSE: WPM); and Agnico Eagle Mines Limited (NYSE: AEM; TSX: AEM). Trafigura Pte Ltd. and Taurus Mining Finance Fund No. 3 are private entities with no listed security. Macquarie Bank Limited and National Bank Financial Inc. are named only in their roles as lender and lead underwriter. aktiego.com has not received any compensation from any company named, its management, investor relations representatives, or any third party. No staff member or principal of aktiego.com holds a position in any security named at the time of publication.
The Cozamin acquisition has not closed. Completion requires approval from Mexico’s Federal Antitrust Commission and the TSX Venture Exchange, plus customary closing conditions, and each piece of the financing carries its own conditions, including TSXV approval. Subscription receipt proceeds are held in escrow; if the escrow release conditions are not met by February 28, 2027, extendable by up to two months, the funds are to be returned and the receipts cancelled. Luca’s separately announced El Barqueño acquisition has also not closed.
The financing is dilutive to existing Luca shareholders. The brokered and concurrent placements total 211 million subscription receipts at C$1.00, each convertible into one common share. Capstone is to receive US$15 million in Luca shares at closing, and Luca may settle the US$35 million deferred payment in shares. The lenders will separately hold 21.5 million warrants exercisable at C$1.20. Trafigura’s backstop commitment of up to US$75 million is capped at 19.9% of pro forma voting securities. The 275.22 million shares-outstanding figure and the C$313.75 million market value come from Morningstar, a third-party data provider, not from a company filing.
Luca will carry US$125 million in new senior secured debt at 8.5% on Tranche A and SOFR plus 4.9% on Tranche B, with quarterly principal repayments beginning six months after closing. Under the existing and additional Wheaton streams, 65% of Cozamin’s refined silver is committed to Wheaton until 500,000 ounces are delivered under the new stream. On the 25% of forecast Cozamin copper sales covered by the hedging program, Luca gives up exposure to copper price moves in either direction for 36 months from 2027.
Cozamin’s mineral resource and reserve figures are historical estimates prepared by Capstone. Luca does not treat them as current mineral resources or mineral reserves under NI 43-101, has not independently verified them, and has stated they should not be relied upon. There is no assurance any of them will prove economically viable.
Luca’s 2027 production and revenue figures are future-oriented financial information that the company derived from street consensus estimates for Luca and Visible Alpha estimates for Cozamin; its related per-share cash flow figures are non-GAAP measures with no standardized meaning under IFRS. None of these is guaranteed. Contingent payments to Capstone depend on future annual average LME copper prices and could total anything from zero to US$60 million.
The subscription receipts carry a four-month-and-one-day hold period under Canadian securities laws, and Luca’s release was marked not for distribution to US newswire services or for dissemination in the United States. Neither the TSX Venture Exchange nor its Regulation Services Provider accepts responsibility for the adequacy or accuracy of Luca’s release, per the company’s standard disclosure.
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