Lenzing pledges to enhancing supplier engagement, encompassing over 80% percent of expenditure, to improve sustainability performance throughout the supply chain. Lenzing’s commitment to upholding and driving the respect of environmental and social rights is inherent to its business model and pledges to further extending this effort to its global supply chain. Where possible, Lenzing is actively enhancing its engagement with suppliers to minimise the carbon footprint of products and stimulate business partners to commit to higher environmental and social standards. In 2022, Lenzing began incorporating sustainability clauses in its contracts for chemical suppliers, mirroring the EU’s efforts to introduce Trade and Sustainable Development chapters in its Free Trade Agreements. These clauses are integral for conducting business. Suppliers are expected to set GHG reduction targets and adhere to Lenzing's Suppliers Code of Conduct. Lenzing invests in continuous education for its buyers and hosts regular discussions with sustainability team and rating providers to further reinforce its dedication to sustainable business practices.

Measurable sub-Target: Lenzing assesses 95 percent of its top 200 suppliers via EcoVadis, the Together for Sustainability Audit or an internal assessment/audit by 2025.

Progress reported in July 2026: In 2025, more than 1,000 suppliers are assessed and monitored via EcoVadis, and five suppliers underwent audits through the Together for Sustainability (TfS) program. 68 percent of global procurement spend (including wood and pulp) is covered by these assessments, against an 80-percent-of-spend target. The sub-target of assessing 95 percent of the top 200 suppliers has reached approximately 70 percent. Sustainability clauses continue to be embedded in supply agreements with top chemical suppliers, and all targeted suppliers are required to confirm compliance with Lenzing's Global Supplier Code of Conduct.