Accountability
Reporting
Through our robust sustainability reporting practices, we provide transparent, detailed information on our ESG performance.
Transparency and Continuous Improvement
We are transparent about risks and opportunities, provide stakeholders with insight into our operations, and consistently assess our performance. Reporting is also a key tool for continuous improvement.
Alignment with Standards and Disclosures
At Capstone, we report our sustainability metrics in alignment with various international standards and voluntarily participate in programs that provide a structure to assess and improve performance, as well as an opportunity for collaboration around best practices within our industry.
Our commitment to these initiatives and standards ensures we provide transparent, detailed information around our ESG performance and continue to improve on our ESG metrics over time, fostering a culture of accountability throughout our organization.
Notable commitments are outlined below.
Global Reporting Initiative (GRI)
The GRI is an independent not-for-profit organization that leads a global multi-stakeholder process to develop and refine rigorous yet practical sustainability reporting. The widely used GRI Standards provide the building blocks for transparent reporting, helping organizations mange risks and opportunities and support strategic decision-making. We prepare our annual Sustainability Report in accordance with GRI Standards.
Sustainability Accounting Standards Board (SASB)
SASB enables organizations to provide industry-based disclosures about sustainability-related risks and opportunities. Capstone follows the SASB standards for Metals & Mining.
Task Force on Climate-Related Financial Disclosures (TCFD)
The TCFD developed voluntary climate-related financial disclosure recommendations that provide investors, lenders, insurers, regulators, policymakers and other stakeholders in the financial markets climate-related information useful to decision making. Capstone publishes TCFD progress annually in our Sustainability Report.
Global Industry Standard on Tailings Management (GISTM)
GISTM strives to achieve the ultimate goal of zero harm to people and the environment. Underpinned by an integrated approach to tailings management, the Standard aims to prevent catastrophic failure and enhance the safety of mine tailings facilities across the globe. Capstone is committed to implementing the GISTM across all TSFs by YE 2028. Information around progress towards conformance can be found in our annual Sustainability Report and on the Tailings Management page of our website.
The Copper Mark
The Copper Mark is the leading assurance framework for copper, created to demonstrate responsible production practices and the industry’s contribution to the United Nations Sustainable Development Goals. The Copper Mark uses a rigorous site-level assessment process to independently verify whether individual copper producing sites have responsible production practices using 33 criteria across three areas: Environmental, Social, and Governance. In 2023, Capstone’s Mantoverde and Mantos Blancos sites were awarded The Copper Mark. In 2025, Capstone’s Pinto Valley site was awarded The Copper Mark.
For more information, see our 2023 Sustainability Report and the accompanying 2023 Sustainability Performance Data Book
Past Sustainability Reports
2023 Sustainability
Report
Building Capacity covers our sustainability performance for the period from January 1 to December 31, 2023.