That means fewer steps in your process and one less thing to worry about. 1 Test reports available upon request BEYOND PRICE TAGS FULL SPEED AHEAD ONE-STEP FIRE SAFETY STRENGTH YOU CAN COUNT ON FR COMPOSITE PANELS BEYOND PRICE TAGS FULL SPEED AHEAD ONE-STEP FIRE SAFETY STRENGTH YOU CAN COUNT ON • Full Speed Ahead: In modular construction, every saved hour counts. They turned to Avient’s panels as a smarter alternative to traditional materials. Avient makes no warranties or guarantees respecting suitability of either Avient’s products or the information for your process or end-use application.

Retirement Savings Program. Delivering 25 consecutive quarters of Adjusted Earnings Per Share expansion, driven by record levels of profit and profitability, has created shareholder value. McAlindon 14,729 986 3,424 883,469 - Company Contributions to Qualified Savings Plan.

Version / Date: 1 (no adjustments) / 30.12.2024 Page 1 of 2 ISCC PLUS Certificate Certificate Number: ISCC-PLUS-Cert-PL214-26100824 Bureau Veritas Polska Sp. z o.o. ul. Migdałowa 4, 02-796 Warszawa, Polska certifies that AVIENT Luxembourg S.à.r.l 14 Avenue de l’Eguillette, 95310 Saint Ouen L’Aumône FRANCE (operating under a tolling agreement) complies with the requirements of the certification system ISCC PLUS (International Sustainability and Carbon Certification) This certificate is valid from 30.12.2024 to 29.12.2025. The site of the system user is certified as: Compounding Plant The scope of the certificate includes the following chain of custody options: (not applicable for paper traders) Mass balance Warszawa, 30.12.2024 Place and date of issue Stamp, Signature of issuing party The issuing Certification Body is responsible for the accuracy of this document.

Avient announces expansion to Cesa™ functional additives and NEUSoft™ TPU portfolios and will highlight its innovative material solutions for healthcare at MD&M West 2025 About Avient  Avient Announces Quarterly Dividend...

They are available globally, and are supplied from Asia and Europe.  About Avient Avient Announces Quarterly Dividend...

1/2 IATF 16949 - First Edition (The official document is in English. Any translations of this document shall be used for reference only.) and the applicable customer specific requirements Revision:1 For Bureau Veritas Certification Holding, Le Triangle de l'Arche, 8 Cours du Triangle - 92800 Puteaux - France None Bureau Veritas Certification Certificate N°: FR072877- IATF IATF Certificate N°: 442787 Date Of Expiration: 01-February-2025 Date Of Certification: 02-February-2022 PRODUCT(S) DELIVERED colour with additive concentrates for thermoplastic resins and speciality compounds obtained by mixing and extrusion PERMITTED EXCLUSION(S) SCOPE Design and manufacturing Bureau Veritas Certification certify that the Quality Management System of the above organisation has been audited and found to be in accordance with the requirements of Route de la Vavrette, 01250, TOSSIAT France PolyOne France Tossiat Awarded to Certificate of Approval https://e-cer.bureauveritas.com/FMSNR3ILR1QPBBMGXNKFUDB2LWB28AYDXJNZADBZ8WDH3QYML73QK0B7L7V6CZQPGPGDYLG2UVXWEPJVT4Q0E4Z0DOKSEXCP0BNO7K2WUHCQB2Q9ORVVTV4F9DTN2UI35L https://e-cer.bureauveritas.com/FMSNR3ILR1QPBBMGXNKFUDB2LWB28AYDXJNZADBZ8WDH3QYML73QK0B7L7V6CZQPGPGDYLG2UVXWEPJVT4Q0E4Z0DOKSEXCP0BNO7K2WUHCQB2Q9ORVVTV4F9DTN2UI35L https://e-cer.bureauveritas.com/FMSNR3ILR1QPBBMGXNKFUDB2LWB28AYDXJNZADBZ8WDH3QYML73QK0B7L7V6CZQPGPGDYLG2UVXWEPJVT4Q0E4Z0DOKSEXCP0BNO7K2WUHCQB2Q9ORVVTV4F9DTN2UI35L https://e-cer.bureauveritas.com/FMSNR3ILR1QPBBMGXNKFUDB2LWB28AYDXJNZADBZ8WDH3QYML73QK0B7L7V6CZQPGPGDYLG2UVXWEPJVT4Q0E4Z0DOKSEXCP0BNO7K2WUHCQB2Q9ORVVTV4F9DTN2UI35L https://e-cer.bureauveritas.com/FMSNR3ILR1QPBBMGXNKFUDB2LWB28AYDXJNZADBZ8WDH3QYML73QK0B7L7V6CZQPGPGDYLG2UVXWEPJVT4Q0E4Z0DOKSEXCP0BNO7K2WUHCQB2Q9ORVVTV4F9DTN2UI35L https://e-cer.bureauveritas.com/FMSNR3ILR1QPBBMGXNKFUDB2LWB28AYDXJNZADBZ8WDH3QYML73QK0B7L7V6CZQPGPGDYLG2UVXWEPJVT4Q0E4Z0DOKSEXCP0BNO7K2WUHCQB2Q9ORVVTV4F9DTN2UI35L https://e-cer.bureauveritas.com/FMSNR3ILR1QPBBMGXNKFUDB2LWB28AYDXJNZADBZ8WDH3QYML73QK0B7L7V6CZQPGPGDYLG2UVXWEPJVT4Q0E4Z0DOKSEXCP0BNO7K2WUHCQB2Q9ORVVTV4F9DTN2UI35L REMOTE SUPPORT FUNCTION(S) (The official document is in English. Revision:1 For Bureau Veritas Certification Holding, Le Triangle de l'Arche, 8 Cours du Triangle - 92800 Puteaux - France Bureau Veritas Certification Certificate N°: FR072877- IATF IATF Certificate N°: 442787 Date Of Expiration: 01-February-2025 Date Of Certification: 02-February-2022 Route de la Vavrette, 01250, TOSSIAT France PolyOne France Tossiat Awarded to Appendix to the Certificate of Approval Name Address Scope AVIENT LUXEMBOURG ROUTE DE BASTOGNE, 19, 9836, POMMERLOCH Luxembourg Logistic, Supplier Management, Purchasing PolyOne Europe Logistics 7 rue Blériot, 4460, GRACE HOLLOGNE Belgium Warehousing Polyone Europe ul.

Versaflex™ PKG 4345, 4355, 4365 Versaflex™ PKG 4465 Versaflex™ PKG 4570 Versaflex™ PKG 4665 Hardness Shore A 45A, 55A, 65A 65A 70A 65A Regulatory* • REACH SVHC • FDA 21 CFR • EU 10/2011 • REACH SVHC • FDA 21 CFR • REACH SVHC • FDA 21 CFR • REACH SVHC • FDA 21 CFR Color Translucent Translucent Natural Natural Overmolding Bonds To Polypropylene Polypropylene Polar substrates Polar substrates Chemical Resistance • #1 for soaps • Low-cost solution for non-polar oils • #2 for soaps • Some oils • #1 for polar & non-polar oils • #1 for non-polar solvents, like isododecane • #2 for non-polar oils • Abrasion resistance * Regulatory compliance is offered for consideration only—limitations apply; please check with product stewardship. Testing is the sole responsibility of the final article manufacturer. www.avient.com Copyright © 2020, Avient Corporation. Avient makes no warranties or guarantees respecting suitability of either Avient’s products or the information for your process or end-use application.

Ashish Khandpur, President and Chief Executive Officer, Avient Corporation. Rose Vice President, Marketing and Communications Avient Corporation +1 440-930-3162 kyle.rose@avient.com mailto:giuseppe.disalvo@avient.com mailto:kyle.rose@avient.com 6 Attachment 1 Avient Corporation Summary of Condensed Consolidated Statements of Income (Unaudited) (In millions, except per share data) Three Months Ended December 31, Year Ended December 31, 2023 2022 2023 2022 Sales $ 719.0 $ 790.4 $ 3,142.8 $ 3,396.9 Operating income 43.1 0.4 196.8 243.3 Net income (loss) from continuing operations attributable to Avient shareholders 27.8 (17.0) 75.8 82.8 Diluted earnings (loss) per share from continuing operations attributable $ 0.30 $ (0.19) $ 0.83 $ 0.90 Senior management uses comparisons of adjusted net income from continuing operations attributable to Avient shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to Avient shareholders, excluding special items, to assess performance and facilitate comparability of results. NEWS RELEASE Attachment 1

Die Avient Corporation und ihre Tochtergesellschaften und verbundenen Unternehmen ("Avient") sind bestrebt, ein nachhaltiges Unternehmen von Weltklasse zu sein. Avient verbietet kommerzielle Bestechung oder Schmiergelder. Behandeln Sie alle Transaktionen und Geschäfte mit Avient als vertraulich und geschützt.

Avient Corporation y sus subsidiarias y filiales ("Avient'') se comprometen a ser una organización sostenible de categoría mundial. Los productos suministrados a Avient no deben financiar directa o indirectamente ni beneficiar a grupos armados de la República Democrática del Congo o de un país limítrofe (el "Países cubiertos"), y acatar la Política de Avient Sobre Minerales en Conflicto en relación con los productos suministrado a Avient. Avient prohíbe el soborno comercial o las comisiones ilegales.