In 2023, we met this goal reaching 62% electricity being from renewable sources by leveraging virtual power purchase agreements among other sourcing initiatives.

For 2023, there have been zero incidences of non-compliance with both legally required and voluntary standards, and there have been no incidences of our products harming people or the environment. In 2023, Avient invested in a new product stewardship platform to manage the environmental, health and safety impact of the Avient portfolio, the development and implementation of this platform will continue as we move into 2024. Our goal in 2023 is to fully automate this process and expand the PCF data available for the Avient portfolio. 

No. 0962.01) 09/05/2023 Page 1 of 1 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 AVIENT CORPORATION 80 North West Street Norwalk, OH 44857 Craig Polta Phone: 419 660 4278 MECHANICAL Valid To: September 30, 2025 Certificate Number: 0962.01 In recognition of the successful completion of the A2LA evaluation process, accreditation is granted to this laboratory to perform the following tests on plastics: Test Method(s) Test Name ASTM D256; ISO 180 Notched Izod ISO 179 (1eA) Determination of Charpy Impact ASTM D523 Gloss ASTM D618 (Method A) Conditioning of Test Specimens ASTM D792 (Method A) Specific Gravity ASTM D1238 (Method B) Melt Flow Rate ASTM D3012 Thermal Oxidative Stability ASTM D3641 Injection Molding Test Specimens FMVSS 302 Flammability ASTM E1331; SAE J1545 Spectrophotometric Color Difference SAE J1885 (Rev. Presented this 05th day of September 2023. _______________________ Mr. Trace McInturff, Vice President, Accreditation Services For the Accreditation Council Certificate Number 0962.01 Valid to September 30, 2025

Guidance 16.0% 16.3% Guidance Actual Q3 2023 ADJ. Prior Year 12 Q3 2023 PERFORMANCE VS. 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) A vi en t K W R FU L P P G A V Y R P M FM C C E E C L A S H H X L H U N E M N S C L Avient Specialty Formulators Other Specialty / Chemical Companies MULTIPLE EXPANSION Source: Peer data per Bloomberg as of October 27, 2023 Note: Avient reflects 2023 adjusted EBITDA guidance of $500M and closing share price of $31.18.

10009PFXHDC Epic HD Clear 2 - 30 parts Epic SFX Bases:  Mix by weight Sculpture Base 50%, Plush Base 30%, Cork Base 20%. 

Avient 2023 Proxy Statement Pages 47-49, 51

in Sales in 2023

RAISE is Avient’s newest ERG, launched in 2023.

No. 0562.01) 11/30/2023 Page 1 of 1 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 AVIENT CORPORATION 733 East Water Street North Baltimore, OH 45872 Claire Holman Phone: (419) 257-1327 MECHANICAL Valid To: October 31, 2025 Certificate Number: 0562.01 In recognition of the successful completion of the A2LA evaluation process, accreditation is granted to this laboratory to perform the following automotive plastics tests: Test Method: Test Name: ASTM D412 Tensile ASTM D523 Specular Gloss ASTM D618 (A) Conditioning of Plastics ASTM D624 (Die C) Tear Strength ASTM D638 Tensile Properties ASTM D792 (A) Density and Specific Gravity by Displacement ASTM D1004 Initial Tear Resistance ASTM D1203 (A) Volatile Loss ASTM D1895 (A) Apparent Density, Bulk Factor, Pourability ASTM D1921 Particle Size (Sieve Analysis) ASTM D2240 Durometer Hardness (Shore A and D) ASTM E1331 Color by Spectrophotometry Using Hemispherical Geometry FMVSS 571.302 Flammability FORD BN-102-01 (A) Low Temperature Flexibility FORD BO-131-03 Interior Odor ISO 3795 Determination of Burning Behavior of Interior Materials SAE J323 (A) Cold Cracking (Mandrel Bend) SAE J1351 Hot Odor for Insulation Materials SAE J1545 Instrumental Color Difference Measurement DOC-058151 Angle of Repose 1 Laboratory Developed Method For the tests to which this accreditation applies, please refer to the laboratory’s Mechanical Scope of Accreditation. Presented this 30th day of November 2023. _______________________ Mr.

THERMOPLASTIC ELASTOMERS North America Portfolio PRODUCT SELECTION GUIDE GENERAL PROPERTIES REGULATORY OVERMOLDING PROCESS FEATURES Appearance Hardness Specific Gravity Food Contact UL 94 Suitable Substrates Injection Extrusion ASTM (Shore) ASTM (D792) reSound™ REC Recycled Content Series VX2800-9003 C Natural 47A 0.94 - - PP ✔ - 25% post-consumer recycled (PCR) content (PVB from windshields and laminated glass); 1.77 cradle-to-gate product carbon footprint (PCF) VX2800-9004 C Natural 54A 0.95 - - PP ✔ - 25% PCR content (PVB from windshields and laminated glass) VX2800-0001 I Black 65A 0.89 - - PP ✔ - 25% post-industrial recycled (PIR) content VX2800-0001 I Natural 65A 0.89 - - PP ✔ - 25% PIR content VX2800-0001 C Black 65A 0.89 - - PP ✔ - 25% PCR content (ocean plastics) VX2800-0002 I Black 65A 0.88 - - PP ✔ - 40% PIR content VX2800-0003 C Gray 65A 0.88 ✔ - PP ✔ - 25% PCR/PIR content (food packaging) with application specific FDA rating VX0100-0001 AR I Black 79A 1.05 - - PC, ABS, PC/ABS ✔ - 30% PIR content reSound™ BIO Bio-based Series RS7900-0001 30N Natural 31A 1.00 - - PP ✔ - 35% bio-derived content (Gen 1 biomass) RS7900-0001 45N Natural 48A 1.11 - - PP ✔ - 35% bio-derived content (Gen 1 biomass) RS7900-0001 60N Natural 59A 1.11 - - PP ✔ - 35% bio-derived content (Gen 1 biomass) RS7900-0001 70N Natural 69A 1.09 - - PP ✔ - 35% bio-derived content (Gen 1 biomass) RS2800-0001 30N Natural 33A 0.85 - - PP ✔ - 50–60% bio-derived content (Gen 1 biomass) RS2800-0001 45N Natural 49A 0.85 - - PP ✔ - 50–60% bio-derived content (Gen 1 biomass) RS2800-0001 60N Natural 63A 0.87 - - PP ✔ - 50–60% bio-derived content (Gen 1 biomass) RS2800-0001 70N Natural 71A 0.86 - - PP ✔ - 50–60% bio-derived content (Gen 1 biomass) reSound™ Ultra-Low Carbon Footprint Series RS0200-9001 80 Natural 80A 0.87 - - PP, LDPE ✔ - -0.40 cradle-to-gate PCF RS0200-9001 60 Natural 60A 0.86 - - PP, LDPE ✔ - -0.03 cradle-to-gate PCF FEATURED TPES FOR CONSUMER APPLICATIONS CO N SU M ER Avient’s specialty thermoplastic elastomers (TPEs) are formulated to meet countless performance, application and aesthetic demands. Prior to testing, the samples were heated to 65C for 30 minutes. Testing is on a scale of 1–10 (low-high odor) 1.844.4AVIENT www.avient.com Copyright © 2023, Avient Corporation.