Environment

Environmental stewardship is essential to our long-term success – safeguarding the natural systems that we depend on and enhancing our resilience to environmental and corresponding financial risks while supporting our goal of building a lasting positive legacy.

As part of our governance process for addressing sustainability imperatives, Harmony has commenced the establishment of community of practices (CoPs). These CoPs will bring together experts across the organisation to collaborate, foster shared learning and drive continuous improvement to deliver measurable sustainability outcomes across the group. At each operation, general managers manage environmental plans, identify improvement opportunities, run programmes, and monitor regulatory compliance, with oversight from regional executives and management.

Our board, through the social and ethics committee, oversees our environmental programmes and performance. The executive responsible for sustainability drives strategic environmental improvements at group level. Our group environmental head holds direct accountability for embedding responsible environmental practices across operations, supported by dedicated environmental subject matter experts. The board, with support from the social and ethics committee and the chief sustainability officer, maintains oversight over our risk management, including regularly reviewing our policy and procedures.

All operations implement approved environmental management programmes that embed responsible mining practices, guided by the Harmony environmental policy and roadmaps. We regularly review and update these to remain compliant with our host countries’ regulations. Each operation follows technical and performance standards that form part of environmental management systems and are implemented according to ISO 14001 (2015). All South African operations are ISO 14001 certified, and our Australasian and decommissioned assets are guided by ISO requirements. All TSFs certified by ICMI undergo recertification every 18 months for ongoing compliance with the International Cyanide Management Code.

Total Environmental expenditure
Rehabilitation
expenditure
Reportable environmental
incidents
Fines or penalties
paid

Our strategy: Building a lasting positive legacy

Our sustainability framework (embedded in our business strategy) guides the development and implementation of our environmental programmes and policies, which are informed by agreement-based commitments, regulatory compliance, best practice and extensive stakeholder engagement.

By executing our environmental programmes, we aim to conduct responsible mining practices to reduce the negative impacts of our mining activities while boosting our potential positive impacts.

As we transition our sustainability reporting to align with IFRS S1 and S2, we aim to provide stakeholders with insights into how we manage our material sustainability and climate-related risks and opportunities

Our strategic risks and opportunities related to environmental aspects are summarised in Sustainability framework in relation to our sustainability imperatives. These are defined through our enterprise risk management process and described in the Risks and opportunities section of our 2025 Integrated report.

These strategic risks reflect the most significant environment-related threats to our business, employees and host communities over the medium to long term, with possible negative implications of future operating costs, infrastructure requirements, operations and operating conditions, host communities and our supply chain. The impact of these risks was assessed against Harmony’s risk categories as set out in the risk appetite and tolerance framework. Other environmental risks and management measures are described per environmental topic in the 2025 Sustainability report.

Our climate-related risks as per IFRS S2 are described in the 2025 Climate action and impact report.