Maxxam PPR 10G 10T White 457B/SAND BEIGE / LP/ CHP260A2 S/M PP FR 8-6 LMS-1000

Hatfield, Pennsylvania 11. Sant Andreu, Spain 11. More recently, with the divestiture of the PP&S segment in 2019 and the acquisition of Clariant Masterbatch in 2020, we have fundamentally repositioned our portfolio to that of a true specialty enterprise—from which we can springboard to even greater heights in the future.

DENSO M E C H A N I C A L H V A C D O O R F L A P • Processability was key as the part had to be injection compression molded due to its extremely thin nature • Copper resistance • Light weight • Anti-static • Low VOC • Worked in close collaboration with the customer to understand key design challenges and needs • Streamlined the development process through global presence, working locally in Europe while also running trials in Asia • Re-designed the part to provide a 90% weight reduction • Utilized material science expertise to create a custom formulation that improved resistance to copper deposits and enabled injection compression molding Customized Maxxam™ Formulation KEY REQUIREMENTS WHY AVIENT? https://www.polyone.com/products/engineered-polymer-formulations/general-engineered-formulations/maxxam-polyolefin https://www.polyone.com/products/engineered-polymer-formulations/general-engineered-formulations/maxxam-polyolefin Denso

AVIENT CORPORATION I N V E S T O R P R E S E N T A T I O N (NYSE: AVNT) N OV E M B E R 2 0 2 3 DISCLAIMER Forward-Looking Statements Certain statements contained in or incorporated by reference into this presentation constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. PRIOR YEAR $790 $710 2022 2023 $107 $112 2022 2023 Sales Adjusted EBITDA $0.42 $0.47 2022 PF 2023 - 10% + 5% + 12% Sales Adjusted EBITDA Adjusted EPS 16 $112 $500 $0.47 Q4 AND FULL YEAR 2023 GUIDANCE $710 $3,130 Sales Adjusted EBITDA Adjusted EPS 17 (in millions) (in millions) Guidance: Free Cash Flow $180 $180 Prior Guidance Guidance FREE CASH FLOW & INCREASED DIVIDEND 13th Consecutive Dividend Increase 0.16 0.26 0.42 0.58 0.79 0.85 0.99 1.03 2011 2013 2015 2017 2019 2021 2023 2024 S U S TAI NABI L I T Y DAY RE CAP SUSTAINABILITY AS A GROWTH DRIVERLONG-TERM REVENUE GROWTH DRIVERS 60%+ Key Growth Drivers Sustainable Solutions Composites, Healthcare, Asia / LATAM Overlap Other (GDP Growth) Total Company Revenue Growth Drivers Long-Term Growth Rate Sustainable Solutions 8–12% Composites 8–10% Healthcare 8–10% Asia / LATAM 5% Other (GDP growth) 0–2% Avient 6% SUSTAINABILITY TRENDS DRIVE LONG-TERM GROWTH 8-12% Long Term Growth 50 90 2022 2030 Medical Plastics Market Size (in $Billions) 2020 2030 Recycled Plastics Virgin Plastics Growing Demand for Recycled Content Avient Sustainable Solutions 46 2023 2032 Global Offshore Annual Wind Installations (in Gigawatts) Sources: McKinsey, Bloomberg, Grand View Research SUSTAINABILITY TRENDS DRIVE LONG-TERM GROWTH 21 • Transformative acquisitions combined with divestitures of more cyclical businesses have improved margins over 400 bps since 2018 • 20% long-term margin goal to be driven by key growth drivers, with sustainable solutions playing a meaningful role 5.4% 11.5% 2006 2018 2023E Recovery Growth Drivers Strategic Objective 20%+ +1%+ +3%+ ADJUSTED EBITDA MARGIN EXPANSION 22 • 6% annualized long-term sales growth leveraging sustainable solutions, composites, healthcare, and emerging regions • Expand EBITDA margins to 20% • Deliver annual EBITDA and EPS growth of 10% and 15% • Maintain asset-light, 80% free cash flow conversion profile and be valued as a specialty formulator • Continue fostering our Great Place to Work® culture CREATING A WORLD-CLASS SUSTAINABLE ORGANIZATION 23 PEER COMPARISONS AVIENT IS ASSET LIGHT Capex / Revenue 2023E (%) Avient Specialty Other Specialty / Note: Avient reflects 2023 estimated revenue of $3,130 and estimated run-rate CAPEX of $110M. 26 3.5 1.8 2.7 3.0 3.4 3.7 2.8 3.7 4.6 5.0 6.9 7.0 8.6 11.1 Av ie nt PP PM FM C N C FREE CASH FLOW CONVERSION Note: Free cash flow conversion calculated as (Adjusted EBITDA – Capex) / Adjusted EBITDA. Avient reflects 2023 adjusted EBITDA guidance of $500M and estimated run-rate CAPEX of $110M. 2023E (%) 27 78 89 84 82 80 77 88 81 76 70 69 60 54 (6) Av ie nt PP PM FM C C Avient Specialty Other Specialty / MULTIPLE EXPANSION Note: Avient reflects 2023 adjusted EBITDA guidance of $500M and closing share price of $31.18.

Nymax™ REC Recycled Nylon Formulations: two new super tough PA6 and PA66 grades added to Avient’s recycled content portfolio, each containing post-industrial recycled content, resulting in up to 81% lower cradle-to-gate product carbon footprint than traditional alternatives made without recycled content, and will be presented during Avient’s technical seminar at NPE, “Exploring Sustainable Alternatives to Traditional Polyamides,” by Jeremy Gray, Application Development and Technical Service Engineer, Specialty Engineered Materials at Avient, on May 9 at 11 a.m. Cesa™ Non-PFAS Process Aid for Extrusion: for use in polyethylene (PE) and polypropylene (PP) applications, it reduces friction between the polymer and the metal during extrusion comparable to a traditional processing aid but is formulated without fluoropolymers which may be classifiable as per- and polyfluorinated substances (PFAS) and will be presented during Avient’s technical seminar at NPE, “PFAS Alternatives: 2024 and Beyond,” by Sean Bernhardt, Senior Research and Development Manager, Color, Additives, & Inks, Americas at Avient, on May 7 at 3 p.m. and May 8 at 1 p.m.

The high-impact polypropylene (PP)-based grades offer an excellent combination of impact, density, flowability, and colorability properties. Customized density with a wide range of specific gravities (1.2 - 11 gm/cm3)

A NR 989/2002 - ZMIENIONO §§ 4; 7 UST. 1, 2, 5; 9 UST. 2, 3, 4; 11 UST. 2, 5; 11A UST. 4; 12 UST. 2; 13 UST. 2; 17 UST. 2 UMOWY SPÓŁKI; 2 20.01.2010 R , REP. A NR 510/2010 , NOTARIUSZ WALDEMAR JEZIORSKI , KANCELARIA NOTARIALNA W ZGIERZU - ZMIANA § 2 I § 4 UMOWY . 3 AKT NOTARIALNY Z DNIA 06.09.2011 R., REP A NR 2394/2011 NOTARIUSZ ANNA KOPCZYŃSKA KANCELARIA NOTARIALNA W ŁODZI - ZMIANA §§ 4, 7, 8, 9, 11 UST.2 PKT G; NOWY § 11 UST.2 PKT H; ZMIANA NUMERACJI PKT-ÓW: H,I,J,K,L W § 11 UST.2 NA PKT:I,J,K,L,M; ZMIANA § 11 UST.2 I 5, ZMIANA NR §11A NA § 12 I ODPOWIEDNIA ZMINA NUMERACJI KOLEJNYCH PARAGRAFÓW; ZMIANA §§: 12, 13 UST.1,2,4,5; USUNIĘCIE § 13 UST.6; ZMIANA § 14 UST.2 I § 15; USUNIĘCIE § 16 UST.2, § 18 UST.1 UMOWY SPÓŁKI 4 11.06.2012R. A NR 18738/2012 - ZMIENIONO §4, DODANO §3 UST. 3 ORAZ ZMIENIONO §11 UST. 5 UMOWY SPÓŁKI. 5 AKT NOTARIALNY Z DNIA 11.06.2012 R., REP.

No. 0514.02) Revised 10/08/2019 Page 1 of 2 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2005 POLYMER DIAGNOSTICS INC. 33587 Walker Road Avon Lake, OH 44012 Ana De La Ree Phone: 440-930-3271 CHEMICAL Valid To: December 31, 2019 Certificate Number: 0514.02 In recognition of the successful completion of the A2LA evaluation process, accreditation is granted to this laboratory to perform the following rubber and plastics tests: Test Description: Test Method or Standard: Analysis of Volatile Contaminants from Polymers (Chromatography) VDA 277 FTIR (Fourier Transform Infrared) Spectroscopy ASTM E1252 (Except 7.6, 11.2, and 11.4) Flammability Horizontal Burn of Self-Supporting Plastics ASTM D635; UL 94; IEC 60695-11-10 Horizontal Burn of Materials Used in Occupant Compartments of Motor Vehicles ASTM D5132; FMVSS 302 (49 CFR 571.302) Vertical Burn, 20 mm ASTM D3801; UL 94; IEC 60695-11-10 Vertical Burn, 125 mm ASTM D5048; UL 94; IEC 60695-11-20 Oxygen Index ASTM D2863 FT1 Flame Test UL1581, Clause 1060; UL2556/CSA C22.2 No 2556, Clause 9.3 Cable Flame Test UL1581, Clause 1061 VW1 Flame Test UL1581, Clause 1080; UL2556/CSA C22.2 No 2556, Clause 9.4 FT2/FH Flame Test UL1581, Clause 1100; UL2556/CSA C22.2 No 2556, Clause 9.1 FV-1 Flame Test UL1581, Clause 1060; UL2556/CSA C22.2 No 2556, Clause 9.5 Thin Material Burning Test UL-94 Glow Wire Test IEC 60695 2-10, 2-11, 2-12, 2-13 RVCM in PVC ASTM D4443 (A2LA Cert.

No. 0514.02) Revised 09/21/2021 Page 1 of 2 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 POLYMER DIAGNOSTICS INC. 33587 Walker Road Avon Lake, OH 44012 Ana De La Ree Phone: 440-930-3271 CHEMICAL Valid To: December 31, 2021 Certificate Number: 0514.02 In recognition of the successful completion of the A2LA evaluation process, accreditation is granted to this laboratory to perform the following rubber and plastics tests: Test Description: Test Method or Standard: Analysis of Volatile Contaminants from Polymers (Chromatography) VDA 277 FTIR (Fourier Transform Infrared) Spectroscopy ASTM E1252 (Except 7.6, 11.2, and 11.4) Flammability Horizontal Burn of Self-Supporting Plastics ASTM D635; UL 94; IEC 60695-11-10 Horizontal Burn of Materials Used in Occupant Compartments of Motor Vehicles ASTM D5132; FMVSS 302 (49 CFR 571.302); ISO 3785 Vertical Burn, 20 mm ASTM D3801; UL 94; IEC 60695-11-10 Vertical Burn, 125 mm ASTM D5048; UL 94; IEC 60695-11-20 Oxygen Index ASTM D2863 FT1 Flame Test UL1581, Clause 1060; UL2556/CSA C22.2 No 2556, Clause 9.3 Cable Flame Test UL1581, Clause 1061 VW1 Flame Test UL1581, Clause 1080; UL2556/CSA C22.2 No 2556, Clause 9.4 FT2/FH Flame Test UL1581, Clause 1100; UL2556/CSA C22.2 No 2556, Clause 9.1 FV-1 Flame Test UL1581, Clause 1060; UL2556/CSA C22.2 No 2556, Clause 9.5 Thin Material Burning Test UL-94 Glow Wire Test IEC 60695 2-10, 2-11, 2-12, 2-13 RVCM in PVC ASTM D4443 (A2LA Cert.

Corporate seat Amsterdam First entry in Business Register 12-04-2006 Date of deed of incorporation 11-04-2006 Date of deed of last amendment to the Articles of Association 12-04-2021 Issued capital EUR 19.593,63 Paid-up capital EUR 19.593,63 Filing of the annual accounts The annual accounts for the financial year 2019 were filed on 01-07-2020. Company start date 11-04-2006 Activities SBI-code: 46751 - Wholesale of basic and industrial chemicals Employees 4 Establishment Establishment number 000019561423 Trade name Avient Colorants Netherlands B.V. Visiting address Stationsplein 8 K, 6221BT Maastricht Telephone number +31437999376 Fax number +31437999333 Internet address www.clariant.com Date of incorporation 11-04-2006 Activities SBI-code: 46751 - Wholesale of basic and industrial chemicals For further information on activities, see Dutch extract.