Pens and Auto-Injectors More Increasing Supply Security for Medical Plastics Minimize the risk of supply disruptions for healthcare plastic colorants and functional additives More Healthcare Bio-based Polymer Solutions Switching to bio-based solutions for adding color and performance to healthcare plastics More Changing Regulations of IVDR Understanding the relevant changes and resulting challenges of the EU IVDR More Discover how companies around the world have solved problems with the help of Avient.

1.24.1) Value chain mapped Select from: ☑ Yes, we have mapped or are currently in the process of mapping our value chain (1.24.2) Value chain stages covered in mapping Select all that apply ☑ Upstream value chain ☑ Downstream value chain (1.24.3) Highest supplier tier mapped Select from: ☑ Tier 1 suppliers (1.24.4) Highest supplier tier known but not mapped Select from: ☑ Tier 2 suppliers (1.24.7) Description of mapping process and coverage 7 Avient has a Sustainable Sourcing Program, that focuses on embedding sustainable practices into our supply chain decisions. Through this program, we have mapped 90% of direct suppliers (tier 1) by spend. 5.11.7.10) Engagement is helping your tier 1 suppliers meet an environmental requirement related to this environmental issue Select from: ☑ Yes, please specify the environmental requirement :Environmental disclosure through a non-public platform (5.11.7.11) Engagement is helping your tier 1 suppliers engage with their own suppliers on the selected action Select from: ☑ Unknown [Add row] (5.11.9) Provide details of any environmental engagement activity with other stakeholders in the value chain.

December 1, 2014 Avient Announces Quarterly Dividend... Avient Board of Directors Appoints Ashish K.

Typically, this occurs when the sub-tier supplier is an essential component of the supply chain process. Changes in the supply chain (including material and process changes) must be notified to Avient in advance. Changes in the supply chain can lead to a reassessment of the supplier.

Avient Announces Quarterly Dividend... Avient Board of Directors Appoints Ashish K. Avient Announces First Quarter 2025 Results...

PolyOne Speeds Color Development with New ColorMatrix™ Custom Formulation and Supply System Avient Announces Quarterly Dividend... Avient Board of Directors Appoints Ashish K.

Pet Care & Supplies Office Supplies Auto-injectors and Drug Delivery Pens

We count ourselves among them, as PP&S will continue to supply certain Investor Relations, Joe Di Salvo, Vice President, Treasurer and Investor Relations, PolyOne Corporation, +1 440-930-1921, giuseppe.disalvo@avient.com, Media, Kyle G. Rose, Vice President, Corporate Communications, PolyOne Corporation, +1 440-930-3162, kyle.rose@avient.com

Avient Announces Quarterly Dividend... Avient Board of Directors Appoints Ashish K. Avient Announces First Quarter 2025 Results...

Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: our ability to realize anticipated savings and operational benefits from the realignment of assets, including the closure of manufacturing facilities; the timing of closings and shifts of production to new facilities related to asset realignments and any unforeseen loss of customers and/or disruptions of service or quality caused by such closings and/or production shifts; separation and severance amounts that differ from original estimates; amounts for non-cash charges related to asset write-offs and accelerated depreciation realignments of property, plant and equipment that differ from original estimates; our ability to identify and evaluate acquisition targets and consummate acquisitions; the ability to successfully integrate acquired businesses into our operations, such as Swanson, Director, Investor Relations, PolyOne Corporation, +1 440-930-1018, eric.swanson@avient.com; Media Contact: Kyle G. Rose, Vice President, Corporate Communications, PolyOne Corporation, +1 440-930-3162, kyle.rose@avient.com