Cumbres Sur
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Mining transaction advisory

Sale and structuring of mining projects.

We connect mining assets in Chile with domestic and international investors and companies.

  • Mining companies
  • Mining concessions
  • Complete projects
  • NSR royalties
Let's talkWhat we handle

About us

We know the mining market. We manage the sale.

Cumbres Sur is a Chilean firm specialized in originating, structuring and managing the sale of mining assets to domestic and foreign investors and companies.

We advise on the marketing of mining projects, companies, concessions, plants and royalties at every stage of a project's development, from exploration to operations at full production.

We combine commercial, financial and legal capabilities and work with a network of specialized geologists and engineers. This allows us to address the technical, regulatory, contractual and economic aspects of each transaction in parallel, and to support our clients throughout the process.

Marble quarry in Chile

The market and the jurisdiction

Chile, a world-class mining market.

A legally stable concession regime: concessions are granted by the courts, protected by the Constitution and maintained through payment of an annual fee.

1st
Copper producer worldwideClose to a quarter of global output.
3rd
Lithium producer worldwideAnd home to the largest known reserves in the world.
US$104.5 bn
Mining investment pipeline 2025–2034The highest projected level in more than a decade.

Sources: U.S. Geological Survey, Mineral Commodity Summaries 2025; Cochilco, Mining Investment Project Portfolio 2025–2034.

Aerial view of an open-pit mine Mine site at sunset

What we handle

Mining assets in every form.

Metallic and non-metallic mining: copper, gold, silver, molybdenum, lithium, iron, cobalt, industrial minerals and dimension stone.

  • Mining companies

    Sale of all or part of the shares or interests in companies that hold mining assets.

  • Mining concessions

    Exploration and exploitation concessions, individual or grouped into properties with geological potential.

  • Complete projects

    Projects with geological data, resources, engineering or permits, together with their infrastructure and rights.

  • NSR royalties

    Creation, sale and purchase of Net Smelter Return royalties and other rights over future production.

  • Associated assets

    Plants, water rights, easements, tailings and other assets that complement a project.

Development stages

From concession to production.

Each stage has its own risk and buyer profile. We tailor the transaction structure to the maturity of the asset.

  1. Prospect

    Concessions with signs of mineralization and surface data.

    Typical structurePurchase option
    Earn-in

  2. Exploration

    Mapping, geophysics and drilling programs underway or planned.

    Typical structureEarn-in
    Strategic partner

  3. Resources

    Estimated resources and technical information to evaluate the deposit.

    Typical structureJoint venture
    Partial sale

  4. Feasibility

    Engineering, economic studies and permitting.

    Typical structureSale of control
    Financing

  5. Production

    Operating mines or active small and mid-scale mining.

    Typical structureOutright sale
    NSR · Offtake

Transaction structures

Three ways to take an asset to market.

01 Strategic partner with purchase option

An investor funds exploration or development in exchange for a progressive interest and the option to acquire control of the asset or the whole of it.

  • Option agreements over mining concessions
  • Earn-in by investment milestones
  • Staged payments and work commitments

02 Outright sale of the company or the assets

Transfer of the holding company (share deal) or of the mining concessions and assets (asset deal), for cash, deferred or milestone-based consideration.

  • Purchase of shares or equity interests
  • Purchase of registered mining concessions
  • Contingent payments and retained NSR

03 Other bespoke structures

Legal and financial solutions designed around the asset, its owners and the investor's profile.

  • Joint ventures and shareholders' agreements
  • Creation or sale of NSR royalties
  • Mining leases with option, offtake and financing

Method

How we manage a sale.

Before presenting an asset, we verify its legal and technical standing against standards international buyers recognize: NI 43-101, JORC and Chile's CH 20235 Code.

  1. 01

    Asset qualification

    • Review of titles, registrations and concession fee status
    • Technical review with geologists and engineers from our network
    • Valuation and sale strategy
  2. 02

    Preparation

    • Teaser and information memorandum
    • Technical reports signed by Competent Persons
    • Verified data room and prior legal clean-up
  3. 03

    International placement

    • Selection of suitable buyers and investors
    • Confidentiality agreements
    • Presentations and site visits
  4. 04

    Negotiation and closing

    • Letter of intent and term sheet
    • Buyer due diligence
    • Definitive agreements, closing and milestone follow-up

For owners and sellers

We take your asset to the international market.

  • Access to domestic and foreign buyers

    Junior and mid-tier mining companies, funds, family offices and strategic investors.

  • A structure that preserves upside

    Options, milestone payments and royalties that capture future value.

  • A single point of contact

    We coordinate legal, technical and financial advisors throughout the process.

  • Aligned compensation

    Fees agreed in writing and tied to the success of the transaction.

For investors

Your trusted counterpart in Chile.

  • Verified opportunities

    Assets reviewed for titles, concession fees and technical data, with information presented to international standards.

  • Regulatory knowledge

    Mining Code, environmental assessment, sector permits and mine closure.

  • Local setup

    For foreign investors: incorporation of companies, representation and an advisory team in Chile.

  • Ongoing support

    Follow-up on milestones, commitments and the relationship with the owners after closing.

Principles

Rigor at every stage of the transaction.

Mining transactions demand technical and legal rigor, discretion and long-term commitment. These are the criteria we work by.

  • Prior verification

    We review titles, permits and records before committing our clients' time or that of third parties.

  • Confidentiality

    Information on each transaction is handled confidentially, under confidentiality agreements, and is not shared between counterparties.

  • Aligned incentives

    Our compensation is defined in writing and tied to the result the client actually obtains.

  • Legal and technical rigor

    Each structure is designed with legal backing and the support of technical specialists, so that it can be executed and will withstand the buyer's review.

Contact

Do you hold a mining asset or want to invest in Chile?

Send us a brief description of the asset or your investment interest and we will arrange a meeting. All information is treated confidentially.

contacto@cumbres-sur.clSantiago, Chile

Write to us