Capstone unlocks value from Cozamin while keeping copper exposure

Cozamin sale reshapes Capstone’s asset portfolio

Capstone Copper Corp. (ASX:CSC) is selling 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 gives Capstone a substantial cash component without severing its economic link to the operation entirely.

The headline figure includes US$275 million in upfront cash, subject to customary closing adjustments, plus US$15 million in Luca shares to be issued at completion. A further US$35 million is due on the first anniversary of closing, payable in cash and/or Luca shares at Luca’s option.

Copper prices determine the final upside

As much as US$60 million of the consideration is conditional on copper prices over the next three calendar years. Luca would pay US$10 million for each year in which the average LME Copper Cash Settlement Price falls between US$7.00 and US$7.75 a pound, US$15 million where it reaches US$7.76 to US$8.50, and US$20 million at US$8.51 or higher.

That structure makes the US$385 million headline value a ceiling rather than a guaranteed outcome. The upfront cash and deferred consideration provide the more immediate value, while the contingent payments leave part of the eventual proceeds exposed to copper prices in 2027, 2028 and 2029.

Proceeds aimed at balance sheet and growth pipeline

Capstone said it intends to use the net proceeds to strengthen its balance sheet and support its growth pipeline. The company will also retain equity exposure to Cozamin through its shareholding in Luca, although the filing does not disclose the resulting ownership percentage.

The sale arrives as Capstone pursues a broader growth program. Its recent San Pietro acquisition adds another development and exploration option in Chile, but the current filing does not quantify how Cozamin’s disposal will change Capstone’s production profile or the capital allocated to individual projects.

Completion still depends on regulatory approvals

Closing is expected in the fourth quarter of 2026, subject to customary conditions, stock exchange approval and clearance from Mexico’s National Antitrust Commission. The agreement is not subject to Capstone shareholder approval or financing conditions, but the transaction remains incomplete until those conditions are satisfied.