S U S TA I NA B I L I T Y • Most recent Sustainability report substantially expanded disclosure on key environmental and social topics Clariant Masterbatch performance will be included in this year’s report. 2021 Sustainalytics ESG Risk Ranking Newsweek Most Responsible Companies 2016 2017 2018 2019 2020PF VOC Reduction Reduced Energy Use Bio-derived Content Eco-conscious Renewable Energy Applications Recyclability Reduced Material Requirements Lightweighting $275M $325M $355M $410M $560M 9 (1) Avient Sustainable Solutions definitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”)(2) 2020 is Pro forma to include full year of the Clariant Masterbatch business (2) Revenue from Sustainable Solutions 2016 – 2020 (1) S U S TA I NA B I L I T Y F O R A B ET T E R TO M O R ROW 10 • Revenue from sustainable solutions expected to grow 11% in 2021 as our innovation efforts and collaboration with customers continues to accelerate • Relentless focus on delivering our 2030 sustainability targets to benefit the planet and people of the world while adding value to our customers, communities, associates and shareholders • Investments centered around innovation and global sustainability megatrends o Improving Recyclability – Technologies that allow for increased use of post-consumer recycled (PCR) material o Light-weighting – Composites and CAI applications to reduce weight and material requirements, which minimize energy and carbon emissions o Eco-Conscious – Health and human safety applications as well as Avient’s alternative materials to replace lead, PVC, halogens, BPA and other less eco-friendly options o Avient CycleWorks – New innovation center dedicated to advancing recycling and the circular economy through collaboration with customers and brand owners Enable 100% of products manufactured for packaging applications to be recyclable or reusable. Develop and implement solutions to end plastic waste while supporting AEPW $1.5B investment in key initiatives. 2 0 3 0 S U STA I NA B I L I T Y TA RG E TS 11 F U T U R E G ROW TH I N E XC E S S O F G D P I S D R I V E N B Y: Our company is positioned to sustainably grow at a rate that exceeds GDP.

DNU Geon(TM) A61-41F Auto Mat The more complete the information, the more accurate the search result - e.g. a search that only includes the number "8700" or the word "RED" will yield very large results sets).

Geon(TM) FK162-61 Taupe Yoga Mat The more complete the information, the more accurate the search result - e.g. a search that only includes the number "8700" or the word "RED" will yield very large results sets).

Geon(TM) SK132-80 Black Retail Mat Vinyl NP The more complete the information, the more accurate the search result - e.g. a search that only includes the number "8700" or the word "RED" will yield very large results sets).

GLS™ TPE INFANT CARE SOLUTIONS REGULATORY COMPLIANT MATERIALS FOR YOUR BABY CARE PRODUCTS GRADE PRODUCT HARDNESS REGULATORY COMPLIANCE* – FDA, EU, GB Versaflex™ CL2242 Pacifiers Teething 43 Shore A FDA 177.1210 — — Versaflex™ CL2250 Pacifiers Teething 50 Shore A FDA 177.1210 — — Versaflex™ FFC 2882-87 Bottles Food Sets Utensils 87 Shore A FDA 177.2600 EU 10/2011 GB 9685-2008 Versaflex™ FFC 2882-50 Bottles Food Sets Utensils 50 Shore A FDA 177.2600 EU 10/2011 — Dynaflex™ G2701C Bottles Food Sets Utensils 66 Shore A FDA 177.2600 — — Dynaflex™ G6770 Bottles Food Sets Utensils 69 Shore A FDA 177.2600 EU 10/2011 GB 9685-2008 Dynaflex™ G2780C Bottles Food Sets Utensils 84 Shore A FDA 177.2600 — — Dynaflex™ G7600 series Bottles Food Sets Utensils 30A-80 Shore A FDA 177.1210 — — Dynalloy™ GP 7810 & 7820 Bathtubs Bibs Placemats 30A-70 Shore A General FDA — — We believe that the smallest consumers deserve the very best.

Our Board sets the appropriate “tone at the top” when it comes to risk tolerance and management. The 2021 performance goals were set in accordance with our strategic plan framework and annual operating plan, developed at the end of 2020. The SARs granted in 2021 to the Named Executive Officers are set forth in the 2021 Grants of Plan-Based Awards table of this proxy statement.

Certificate Of Conformance has been assessed by ABS Quality Evaluations, Inc. and found to be in conformance with the requirements set forth by: Page 2 of 53 ABS Quality Evaluations ABS Quality Evaluations, Inc. 1701 City Plaza Drive, Spring, TX 77389, U.S.A. Certificate Of Conformance This is to confirm that the Environmental, Health, Safety and Security Management System of: has been assessed by ABS Quality Evaluations, Inc. and found to be in conformance with the requirements set forth by: RC14001®:2015 The Environmental, Health, Safety and Security Management System is applicable to: The validity of this certificate is contingent upon maintenance of multi-site certificate 65536 issued to Avient Corporation Validity of this certificate is based on the successful completion of the periodic surveillance audits of the management system defined by the above scope and is contingent upon prompt,written notification to ABS Quality Evaluations, Inc. of significant changes to the management system or components thereof. Certificate Of Conformance This is to confirm that the Environmental, Health, Safety and Security Management System of: has been assessed by ABS Quality Evaluations, Inc. and found to be in conformance with the requirements set forth by: RC14001®:2015 The Environmental, Health, Safety and Security Management System is applicable to: The validity of this certificate is contingent upon maintenance of multi-site certificate 65536 issued to Avient Corporation Validity of this certificate is based on the successful completion of the periodic surveillance audits of the management system defined by the above scope and is contingent upon prompt,written notification to ABS Quality Evaluations, Inc. of significant changes to the management system or components thereof.

Barrel temperatures should be set progressively. Normal settings for back pressure are 50–150 psi. Hold Time The hold time should be set to achieve gate freeze.

VERSAFLEX™ VDT 4202-40B DYNAFLEX™ G7940-1 Application Anti-Vibration Feet Anti-Vibration Feet Defining Characteristic Vibration Damping Good Processability Compression Set Low Compression Set Low Compression Set Tactile Feel Grippy Feel Soft Touch, Rubbery Feel Coloring Black Natural Hardness 40 Shore A 40 Shore A Processing Injection Molding Injection Molding Overmolding Substrate Polypropylene Polypropylene HOW GLS TPEs MAKE THE DIFFERENCE IN HOME APPLIANCE ANTI-VIBRATION FEET • Reduced appliance movement and noise – vibration damping technology reduces movement and noise of the appliance when in use • Resistance to wear and tear – TPEs are proven to maintain their shape and resist tears with low compression set • Better performance and function – increase design freedom with material selection flexibility • Improved processability – boost efficiency with injection molding processing and reduce overall production cycle time and costs • Reduced number of part defects – eliminate secondary operations to achieve consistent and controlled results To learn more about GLS TPEs home appliances, visit www.avient.com or call +1.844.4AVIENT (1.844.428.4368).

Low-odor TPE for HVAC, non-slip surfaces and mats