Capstone Copper Sells Cozamin Mine to Luca Mining for Up to US$385M
Key Takeaways
- Capstone Copper has agreed to sell its Cozamin copper-silver-zinc-lead mine in Zacatecas, Mexico to Luca Mining Corp. for total consideration of up to US$385 million, with closing expected in Q4 2026.
- US$275 million in upfront cash is payable at closing on a cash-free, debt-free basis, giving Capstone immediate balance sheet firepower with no financing conditions attached.
- An additional US$35 million deferred payment is due on the first anniversary of closing, payable in cash or Luca shares at Luca's discretion.
- Up to US$60 million in contingent consideration is tied to annual average LME copper prices across 2027, 2028, and 2029, with payments ranging from US$10 million to US$20 million per year depending on which price tier is hit.
- The deal requires no Capstone shareholder approval and carries no financing conditions, with only stock exchange and Mexican antitrust approvals outstanding before closing.
Capstone Copper agrees to sell Cozamin mine for up to US$385 million
Capstone Copper Corp. has entered into a definitive agreement to sell its Cozamin copper-silver-zinc-lead mine in Zacatecas, Mexico, to Luca Mining Corp. for total consideration of up to US$385 million. The transaction was announced on 21 September 2026, with closing expected in Q4 2026.
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Deal structure: how the US$385 million breaks down
The total consideration is structured across four components, combining upfront cash certainty with equity exposure and copper-price-linked upside. Here is how each piece fits together.
| Consideration Component | Type | Amount | Timing |
|---|---|---|---|
| Upfront cash | Cash | US$275M | At closing |
| Luca shares | Equity | US$15M | At closing |
| Deferred consideration | Cash and/or Luca shares (at Luca’s option) | US$35M | First anniversary of closing |
| Contingent Consideration | Cash | Up to US$60M | Annually, 2027–2029 |
The upfront cash component of US$275 million is subject to customary closing adjustments, based on an October 31, 2026 lock-box date, on a cash-free and debt-free basis and assuming a normalised level of working capital. The US$35 million deferred component is payable in cash and/or Luca shares at Luca’s discretion.
The Contingent Consideration of up to US$60 million is tied to the annual average LME Copper Cash Settlement Price (the benchmark annual average copper price used to calculate each milestone payment) for each of the 2027, 2028, and 2029 calendar years. The annual payment tiers are:
- US$10 million per year if the LME Cu Price is between US$7.00/lb and US$7.75/lb
- US$15 million per year if the LME Cu Price is between US$7.76/lb and US$8.50/lb
- US$20 million per year if the LME Cu Price is at least US$8.51/lb
What Capstone’s copper price exposure means for investors
The Contingent Consideration is where this deal gets interesting for investors tracking copper’s trajectory. The LME Copper Cash Settlement Price is the London Metal Exchange’s benchmark for the annual average copper price, and it serves as the trigger mechanism for each of the three potential milestone payments.
The structure means Capstone retains leveraged upside to copper prices without retaining the operational risk of running Cozamin. Payments only activate if copper trades at or above US$7.00/lb on an annual average basis, so the contingent element rewards Capstone shareholders specifically in a scenario where the specified price thresholds are met.
Capstone also retains indirect exposure to Cozamin’s ongoing performance through its shareholding in Luca Mining following closing. If the mine performs well and Luca’s share price rises, Capstone’s equity stake in Luca captures some of that value.
For investors, the overall structure balances two objectives: near-term balance sheet certainty through US$275 million in cash at closing, combined with optionality if copper prices climb through 2027, 2028, and 2029. You get the capital security of a major divestiture now, with the potential for an additional US$60 million depending on where the copper market lands over the next three years.
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Strategic rationale and what comes next for Capstone
Capstone has stated it intends to use net proceeds from the transaction to strengthen its balance sheet and support its growth pipeline. The deal is structured cleanly: it is not subject to shareholder approval and carries no financing conditions, removing two of the most common sources of deal uncertainty.
Closing remains subject to the following conditions:
- Stock exchange approval
- Mexican National Antitrust Commission approval
- Other customary conditions
Closing is expected in Q4 2026. Scotiabank is acting as exclusive financial advisor to Capstone. Blake, Cassels & Graydon LLP is acting as Canadian legal counsel, and Creel, García-Cuéllar, Aiza y Enríquez S.C. is acting as Mexican legal counsel.
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