Responsible supply chain
Our suppliers are key partners in our efforts to create sustainable value, in and beyond our operations. Through our responsible supply chain program, we focus on the areas where our impact and risk are most material: safe and fair working conditions, freely chosen employment, responsible minerals sourcing, supplier climate action, and continuous improvement across the value chain. This approach is reflected in ASM’s 2030 sustainability strategy, including targets for supplier conformance and responsible minerals sourcing.
Our 2025 results
87% of key suppliers reporting Scope 1 and 2 emissions
37% of key suppliers have SBTi aligned Scope 1 & 2 emissions reduction targets
89% of ASM's commodity managers trained on sustainability
Decarbonizing our supply chain
In support of our Net Zero by 2035 objectives, we engage suppliers to improve emissions transparency, set reduction targets, and identify practical opportunities for energy efficiency and renewable electricity adoption. In 2025, 87% of in scope suppliers reported Scope 1 and 2 emissions (67% in 2024), and 37% had set reduction targets aligned with a 2030 1.5°C pathway.
ASM also supports supplier access to renewable electricity through industry collaboration. In 2025, the Semiconductor Climate Consortium Scope 2 working group advanced efforts to broaden renewable electricity availability for suppliers, and ASM continued to sponsor Catalyze, a semiconductor industry program designed to improve supplier awareness, access, and resources for renewable electricity procurement.
In 2025 we kicked off a new initiative, called Supplier Consulting in Optimization, Renewables, and Emissions (SCORE). Through SCORE ASM specialists work directly with suppliers to identify energy efficiency and renewable energy opportunities. In 2025, 10 suppliers in the US and Korea received onsite engagement from ASM, with improvement opportunities identified across supplier specific energy efficiency upgrades and renewable energy adoption methods.
Code of conduct and due diligence
Since 2014, ASM has applied the Responsible Business Alliance’s Code of Conduct as policy (RBA CoC) throughout its supply chain. In August of 2023, we published our first-ever Supplier Code of Conduct, incorporating the standards outlined in the RBA Code of Conduct, our Responsible Minerals policy, and our other ASM environmental and human rights policies. These expectations cover individual rights, worker treatment, environmental footprint, responsible sourcing of high-risk minerals, and the cascading of these standards through supplier supply chains.
We apply a risk-based approach to supplier engagement. Suppliers are assessed through self-assessments, surveys, audits, training, capability building, and corrective action planning. In 2025, 87% of requested supplier facilities completed the RBA self-assessment or equivalent, and 8% of ASM’s most critical direct material supplier sites were verified as conformant to our Supplier Code of Conduct.
Responsibly sourcing minerals
ASM is committed to addressing human rights risks throughout our extended supply chain, with particular focus on high-risk minerals. Our Responsible Minerals policy applies to Tier 1 suppliers and aligns with the due diligence and assurance principles of the Responsible Minerals Initiative, the US Dodd Frank Act, and the EU Conflict Minerals Regulation. This policy addresses minerals sourced from Democratic Republic of Congo (DRC), adjoining countries (Covered Countries), or Conflict Affected and High Risk Areas (CAHRAs), and requires suppliers to provide declarations through industry standard reporting mechanisms.
For the latest survey cycle completed in 2025, 96% of surveyed suppliers responded with a Conflict Minerals Reporting Template (CMRT) or confirmed there were no instances of tin, tantalum, tungsten, and gold (3TG) in their products. ASM has also introduced a 2030 target for at least 80% of smelters and refiners in our 3TG supply chain to be conformant with internationally recognized industry standards. In 2025, 65% of 3TG smelters or refiners met those standards.
Supply chain capability building
ASM invests in supplier capability building through training, targeted engagement, and industry programs. In 2025, seven ASM suppliers joined the Responsible Factory Initiative, 162 supplier attendees participated in ASM sustainability training sessions, and ASM hosted three supplier webinars to share best practices in code of conduct adherence and conflict minerals reporting.
We also use supplier engagement moments to recognize progress and encourage stronger performance across the value chain. At Supplier Day 2026 in Singapore, ASM recognized supplier excellence and presented PRISM Sustainability Awards for supplier contributions to key ESG priorities: Circularity, Climate, and Social Impact. The winners were Plexus Corp for Circularity, Ceva Logistics Solutions Singapore for Climate, and Pfeiffer Vacuum + Fab Solutions for Social Impact.
Supplier safety
We extend our intensive commitment to safety into our supply chain. At ASM, we hold ourselves to high standards and we strive to hold our suppliers to the same standards. What this means in practice, for example, is that supplier representatives who come to work at ASM sites are trained on ASM safety expectations and requirements. And we are always looking for additional ways to extend our BeSafe vision to all our supplier partners.
Sustainability
At ASM, we are committed to upholding high standards in sustainability, labor and ethics practices.
