PolyOne Specialty Coatings and Inks Kennesaw, GA Plant Achieves ISO 9001-2008 Certification CLEVELAND – PolyOne today announced that its Specialty Coating and Inks plant in Kennesaw, GA recently achieved ISO 9001-2008 certification.

At this show, Avient will feature colorants and additives to enhance product performance and sustainability and highlight industry certifications and collaborations, including: Avient Sustainable Fiber Additives: include bluesign® SYSYEM PARTNER colorants and recycled fiber solutions with Global Recycle Standard (GRS) certifications, and biodegradable fiber solutions with EN13432 certifications. GRS 4.0 Standard Certification: is an international, voluntary, full-product standard that sets requirements for third-party certification of recycled content, chain of custody, social and environmental practices, and chemical restrictions.

Microsoft Word - Q4 release 2.14.23 430PM 1 NEWS RELEASE FOR IMMEDIATE RELEASE Avient Announces Fourth Quarter and Full Year 2022 Results • Fourth quarter and full year GAAP EPS from continuing operations of $(0.19) and $0.90 • Fourth quarter and full year adjusted EPS from continuing operations of $0.39 and $2.69 exceeds prior guidance of $0.29 and $2.60 due to better-than-expected orders for personal protection products from Avient Protective Materials (“APM”) and cost reductions • On a pro forma basis, fourth quarter and full year adjusted EPS of $0.42 and $3.04 exceeded prior guidance of $0.33 and $2.95, respectively • Strong working capital performance to finish the year resulted in cash flow from operations of approximately $400 million for 2022; full year free cash flow of approximately $290 million • Paid down additional $200 million of debt for a year-end net debt-to-adjusted EBITDA of 2.9x which improved from prior projections • Earned fourth Great Place to Work® certification, achieving the highest employee engagement scores in the history of the company CLEVELAND – February 15, 2023 – Avient Corporation (NYSE: AVNT), a leading provider of specialized and sustainable solutions, today announced its fourth quarter and full year results for 2022.

Seller warrants good and clear title in goods subject to the sale (“Product”) and that the Product conforms at the time of shipment to a Certificate of Analysis, a Certificate of Compliance or a Product Specification Sheet, if any such document exists, and other specifications signed by Seller (“Specifications”).

Seller warrants good and clear title in goods subject to the sale (“Product”) and that the Product conforms at the time of shipment to a Certificate of Analysis, a Certificate of Compliance, or a Product Specification Sheet, if any such document exists, and other specifications signed by Seller (“Specifications”).

Seller warrants good and clear title in goods subject to the sale (“Product”) and that the Product conforms at the time of shipment to a Certificate of Analysis, a Certificate of Compliance, or a Product Specification Sheet, if any such document exists, and other specifications signed by Seller (“Specifications”).

In deciding on a review or audit, the data exporter may take into account relevant certifications held by the data importer. d. In deciding on a review or audit, the data exporter may take into account relevant certifications held by the data importer. d.

UL) is an independent product safety certification organization that has been testing products, developing testing protocols and writing safety standards for over a century.  CSA International is an independent product safety certification organization that helps achieve compliance with US and Canadian standards.  Global ISO Certificate Library

Latin America Manufacturing Certificate Bulletin (Portuguese) Latin America Manufacturing Certificate Bulletin (Spanish) Manufacturing certificate overview for plants in Latin America (Spanish language version)

Pursuant to the policy, any nominee for election as a Director of the Board who receives a greater number of votes “withheld” from his or her election than votes “for” his or her election in an election of Directors that is not a contested election is expected to tender his or her resignation as a Director to the Board promptly following the certification of the election results. COMPENSATION DISCUSSION AND ANALYSIS 44 PROXY STATEMENT 2022 | Annual Meeting of Shareholders 2021 Company performance highlights include: • Full-year 2021 EPS from continuing operations was $2.51, compared to $1.46 in 2020, an increase of 72%; • Record sales growth of 27% over 2020 to $4.8 billion; • Increased adjusted EPS 58% from $1.93 (pro forma for the Clariant Color acquisition) to $3.05(1) driven by demand for sustainable solutions, healthcare applications and composites technologies; • Increased our dividend on an annualized basis by 12% to $0.95; the 11th consecutive year of annual increase; • Our 0.55 injury incident rate (per 100 full-time workers per year) is world-class in our industry; • Certified once again as an ACC Responsible Care® organization for outstanding environmental, health and safety performance; • Continued our journey of improving our culture: received our 3rd consecutive certification as a Great Place to Work® by the Great Place to Work Institute; joined the United Nations Global Compact; and recognized as one of America's Most Responsible Companies by Newsweek; • The SEM business delivered record operating income of $132 million, up 40% from 2020, driven by high demand for our composites and other specialty solutions serving the consumer and healthcare end markets; • The CAI business grew revenue 18% and operating income 34%. With respect to the Clariant Color Integration Objectives described above, the Committee determined all objectives had been met or exceeded as we prioritized safety training and education and retained ACC Responsible Care certification, grew revenue and cross-selling leads, successfully engaged employees, achieving our third consecutive certification as a Great Place to Work® by the Great Place to Work Institute, and achieved $54 million of cost synergies.