https://www.avient.com/sites/default/files/2020-10/avient-conflict-minerals-policy-10.2020.pdf https://www.avient.com/sites/default/files/2020-10/avient-conflict-minerals-policy-10.2020.pdf • Respecter toutes les lois applicables régissant les exigences en matière de salaire et d’heures de travail, y compris la rémunération, les avantages sociaux et les heures supplémentaires.

Microsoft Word - Compensation Committee Charter (REV 10-2019)3[1].docx AVIENT CORPORATION COMPENSATION COMMITTEE CHARTER Membership • The Committee will consist entirely of directors who meet the definition of “independent” as set forth in the Corporate Governance Standards of the New York Stock Exchange, including the additional independence requirements set forth in New York Stock Exchange Listed Company Manual Section 303A.02(a)(ii)

Continued to invest in innovation and commercial resources in pursuit of 2020 Platinum Vision and double-digit EPS growth While much work remains to improve and grow our Designed Structures and Solutions segment, our other businesses are performing well, and we are on track to achieve our 2020 Platinum Vision." Photo - http://photos.prnewswire.com/prnh/20160202/328819

Microsoft Word - Avient Announces Fourth Quarter and Full Year 2024 Results 1 NEWS RELEASE FOR IMMEDIATE RELEASE Avient Announces Fourth Quarter and Full Year 2024 Results • Fourth quarter sales increased 4% to $747 million and full year sales increased 3% to $3,240 million • Organic sales, which excludes the impact of foreign exchange, grew 5% and 4% in the fourth quarter and full year, respectively, driven by positive growth in all regions • Fourth quarter and full year GAAP EPS from continuing operations of $0.52 and $1.84 compared to $0.30 and $0.83 in the prior year • Fourth quarter adjusted EPS of $0.49, above mid-point of guidance range of $0.46 to $0.50 and includes a $0.01 unfavorable impact from foreign exchange • 2024 full year adjusted EPS of $2.66 represents an increase of 13% over the prior year, driven by sales growth and margin expansion in both segments • 2025 full year adjusted EPS expected to range from $2.70 to $2.94; the mid-point represents 11% growth when excluding the unfavorable impact of foreign exchange of $0.12 CLEVELAND – February 13, 2025 – Avient Corporation (NYSE: AVNT), an innovator of materials solutions, today announced its fourth quarter and full year results for 2024. https://www.avient.com/investors https://edge.media-server.com/mmc/p/rgfk7qte/ https://www.avient.com/investors https://register.vevent.com/register/BIf718eaf1419a4d83a527f0aba7b74d90 https://www.avient.com/investors/events-presentations 4 Non-GAAP Financial Measures The Company uses both GAAP (generally accepted accounting principles) and non-GAAP financial measures.

Microsoft Word - Avient Announces First Quarter 2025 Results 1 NEWS RELEASE FOR IMMEDIATE RELEASE Avient Announces First Quarter 2025 Results • First quarter sales of $827 million, reflects 2% organic growth over the prior year quarter, excluding the impact of foreign exchange • First quarter GAAP EPS of ($0.22) compared to $0.54 in the prior year quarter • First quarter adjusted EPS of $0.76, in-line with guidance; growth of 4% over the prior year quarter, excluding an unfavorable impact of $0.03 from foreign exchange • 2025 full year adjusted EPS guidance range of $2.70 to $2.94, unchanged from prior guidance CLEVELAND – May 6, 2025 – Avient Corporation (NYSE: AVNT), an innovator of materials solutions, today announced its first quarter results for 2025. https://www.avient.com/investors https://edge.media-server.com/mmc/p/tay7mbuw/ https://www.avient.com/investors https://register-conf.media-server.com/register/BI648915d05d0c44c4bdef681472840ace https://www.avient.com/investors/events-presentations 3 Non-GAAP Financial Measures The Company uses both GAAP (generally accepted accounting principles) and non-GAAP financial measures.

According to the company, the precise thumb control and long-term comfort has made these new accessories “wildly popular.” 1 http://www.statista.com/statistics/237749/value-of-the-global- entertainment-and-media-market/ AVIENT HELPS GAMING ACCESSORIES COMPANY TAKE AIM AT NEW OPPORTUNITIES © 2020, All Rights Reserved Avient Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012 To learn more, please contact Avient at +1.844.4AVIENT (1.844.428.4368)

https://www.avient.com/sites/default/files/2020-10/avient-conflict-minerals-policy-10.2020.pdf https://www.avient.com/sites/default/files/2020-10/avient-conflict-minerals-policy-10.2020.pdf Etik ve Yönetişim • Tüm ticari müzakereleri sorumlu, etik ve yasal bir şekilde yürütün

AT 20-20 1 Avis Technique – Tri Détectabilité et tri de la solution colorante AVIENT CORPORATION / CESA® IR PP 94000721dans les centres de tri S C R IP TI O N D L A D M A N GENERALITES Demandeur Avient Corporation Date de la demande 2020 Référence de la solution colorante CESA® IR PP 94000721 Limite max de concentration de la solution colorante 4% DESCRIPTION DE LA SOLUTION COLORANTE Couleur Noire Solution colorante adaptée pour : Emballages rigides en PP OBJET DE LA DEMANDE Etude de la détectabilité dans les centres de tri français de la solution colorante noire CESA® IR PP 94000721proposée par Avient Corporation et utilisée pour colorer des emballages rigides en PP. À Paris, le 17 juillet 2020 1 Disponible sur le site du COTREP : https://www.cotrep.fr/content/uploads/sites/3/2019/02/tri-p1-emballages-sombres-v01-2019.pdf https://www.cotrep.fr/content/uploads/sites/3/2019/02/tri-p1-emballages-sombres-v01-2019.pdf

AT 20-16 1 Avis Technique – Tri Détectabilité et tri de la solution colorante AVIENT CORPORATION / CESA® IR PE 94000817 dans les centres de tri S C R IP TI O N D L A D M A N GENERALITES Demandeur Avient Corporation Date de la demande 2020 Référence de la solution colorante CESA® IR PE 94000817 Limite max de concentration de la solution colorante 4% DESCRIPTION DE LA SOLUTION COLORANTE Couleur Noire Solution colorante adaptée pour : Emballages rigides en PE OBJET DE LA DEMANDE Etude de la détectabilité dans les centres de tri français de la solution colorante noire CESA® IR PE 94000817 proposée par Avient Corporation et utilisée pour colorer des emballages rigides en PE. À Paris, le 17 juillet 2020 1 Disponible sur le site du COTREP : https://www.cotrep.fr/content/uploads/sites/3/2019/02/tri-p1-emballages-sombres-v01-2019.pdf https://www.cotrep.fr/content/uploads/sites/3/2019/02/tri-p1-emballages-sombres-v01-2019.pdf

On January 28, 2020, prior to the issuance of the additional shares, the Company provided guidance for adjusted EPS for the first quarter of 2020. For purposes of comparability to the prior year, senior management has referenced adjusted EPS excluding the impact of additional shares issued in February 2020, as well as the impact of the senior unsecured notes offering completed in May 2020. Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except per share data) Avient Investor Presentation - Jefferies Industrials Conference August 2020.pdf August 2020 investor non-GAAP reconciliation.pdf August 2020 investor non-GAAP