Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; disruptions or inefficiencies in our supply chain, logistics, or operations; changes in laws and regulations in jurisdictions where we conduct business, including with respect to plastics and climate change; fluctuations in raw material prices, quality and supply, and in energy prices and supply; demand for our products and services; production outages or material costs associated with scheduled or unscheduled maintenance programs; unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; an inability to raise or sustain prices for products or services; our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; information systems failures and cyberattacks; amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; our ability to achieve strategic objectives and successfully integrate acquisitions, including the implementation of a cloud-based enterprise resource planning system, S/4HANA; and other factors affecting our business beyond our control, including without limitation, changes in the general economy, changes in interest rates, changes in the rate of inflation, geopolitical conflicts and any recessionary conditions.

Our new Transcend Biocompatible PEEK pre-colored compounds can provide healthcare manufacturers with the flexibility and reliability they need to produce high-quality medical devices," said Deborah Sondag, Global Marketing Manager for Colorant Chromatics at Avient Corporation.

Avient's Suzhou facility operates under ISO 13485 quality management system certification, complying with the leading standards in medical device manufacturing.

Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; disruptions or inefficiencies in our supply chain, logistics, or operations; changes in laws and regulations in jurisdictions where we conduct business, including with respect to plastics and climate change; fluctuations in raw material prices, quality and supply, and in energy prices and supply; demand for our products and services; production outages or material costs associated with scheduled or unscheduled maintenance programs; unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; information systems failures and cyberattacks; our ability to service our indebtedness and restrictions on our current and future operations due to our indebtedness; amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; and other factors affecting our business beyond our control, including without limitation, changes in the general economy, changes in interest rates, changes in the rate of inflation, geopolitical conflicts and any recessionary conditions.

High shear rate viscosity testing done by GLS’s Quality Control Department (using a rheometer) accurately gauges the way our TPEs will perform at shear rates found during injection molding or extrusion.

ECert - 2023-11-22T151036.517.pdf Page 1 of 10 Validity of this certificate is based on the successful completion of the periodic surveillance audits of the management system defined by the above scope and is contingent upon prompt,written notification to ABS Quality Evaluations, Inc. of significant changes to the management system or components thereof. ABS Quality Evaluations, Inc. 1701 City Plaza Drive, Spring, TX 77389, U.S.A. WITH ADDITIONAL FACILITIES LISTED ON ATTACHED ANNEX) has been assessed by ABS Quality Evaluations, Inc. and found to be in conformance with the requirements set forth by: Page 2 of 10 Facility: Avient Corporation - Albany 4 Rothwell Ave, PO Box 300-009 Albany Industrial Estate Auckland 0632 New Zealand Facility: Avient Corporation - Avon Lake (SEM) 554 Moore Road Activity: Design and Manufacture of Colorants and Additives for Plastics Activity: Design and Manufacture of Specialty Engineered Thermoplastics Facility: Avient Corporation - Barbastro Pol.

ECert - 2023-11-22T154408.223.pdf Page 1 of 10 Validity of this certificate is based on the successful completion of the periodic surveillance audits of the management system defined by the above scope and is contingent upon prompt,written notification to ABS Quality Evaluations, Inc. of significant changes to the management system or components thereof. ABS Quality Evaluations, Inc. 1701 City Plaza Drive, Spring, TX 77389, U.S.A. WITH ADDITIONAL FACILITIES LISTED ON ATTACHED ANNEX) has been assessed by ABS Quality Evaluations, Inc. and found to be in conformance with the requirements set forth by: Page 2 of 10 Facility: Avient Corporation - Albany 4 Rothwell Ave, PO Box 300-009 Albany Industrial Estate Auckland 0632 New Zealand Facility: Avient Corporation - Avon Lake (SEM) 554 Moore Road Activity: Design and Manufacture of Colorants and Additives for Plastics Activity: Design and Manufacture of Specialty Engineered Thermoplastics Facility: Avient Corporation - Barbastro Pol.

ECert - 2024-03-22T110644.362.pdf Page 1 of 10 Validity of this certificate is based on the successful completion of the periodic surveillance audits of the management system defined by the above scope and is contingent upon prompt,written notification to ABS Quality Evaluations, Inc. of significant changes to the management system or components thereof. ABS Quality Evaluations, Inc. 1701 City Plaza Drive, Spring, TX 77389, U.S.A. WITH ADDITIONAL FACILITIES LISTED ON ATTACHED ANNEX) has been assessed by ABS Quality Evaluations, Inc. and found to be in conformance with the requirements set forth by: Page 2 of 10 Facility: Avient Corporation - Albany 4 Rothwell Ave, PO Box 300-009 Albany Industrial Estate Auckland 0632 New Zealand Facility: Avient Corporation - Avon Lake (SEM) 554 Moore Road Activity: Design and Manufacture of Colorants and Additives for Plastics Activity: Design and Manufacture of Specialty Engineered Thermoplastics Facility: Avient Corporation - Barbastro Pol.

Also, it is common for nylons reinforced with glass fiber to have an inconsistent surface appearance that can be mistaken for poor product quality. Complēt moisture resistant nylons reinforced with long glass fiber produce a smooth, fiber-free finish without special processing to give molded components a high-quality appearance.

As a result of these plastisol aging characteristics and the potential differences in testing methodology, it is strongly recommended that incoming quality control (QC) specifications not be established based on plastisol Technical Data Sheets (TDS), or Certificates of Analysis (COA). Other contaminants may affect product quality in various ways depending on the contaminant type and level.