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

H61173 Page 1 of 3 Validity 01. 03. 2025 – 29. 02. 2028 Issue 01. 03. 2025 A.Grisard, President SQS F. Validity Avient (Taiwan) Co. EN ISO 13485:2016 H61173 01.03. 2025 29.02. 2028 40 20 _2 / Ja nu ar 20 24 _V er si on 3 .1 Appendix Reg. no.

Attachment 1 Special items (1) 1) 

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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). • Members of the Committee will be appointed by the Board each year following the annual meeting of shareholders. • Each Committee member will serve at the pleasure of the Board for such term as the Board may decide or until such Committee member is no longer a Board member. • The Committee shall consist of a minimum of three directors. • The Committee will select a Committee Chair from among its members.

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Avient can provide education on claims that may be made within EPA guidelines related to the use of CESA Antimicro and dosage level recommendations to be within FDA limits. Avient makes no warranties or guarantees respecting suitability of either Avient’s products or the information for your process or end-use application. POLYMER FAMILY MATERIAL PRODUCT NAME PRODUCT TYPE DOSAGE Polyolefin PEAN698413 CESA Antimicro SE 99-58 Silver 2–7.5% Polyolefin PEAN698432 CESA Antimicro J8146 Zinc 1–4% Polypropylene PPA0698636 CESA Antimicro J8259 Zinc 1–4% Nylon ABA0820032 CESA Antimicro ABA0820032 Silver 2–7.5% Polyester NBAN698441 CESA Antimicro S58441 Silver 2–7.5% Polycarbonate NCAN820009 CESA Antimicro NCAN820009 Silver 2–7.5% TPU RUA0698433 CESA Antimicro J8843 Zinc 1–4% Styrenic SLA0820011 CESA Antimicro SLA0820011 Zinc 1–4%

Avient Announces Fifteenth Consecutive Annual Dividend Increase... Avient To Hold Third Quarter 2025 Conference Call... Avient Hires David N.