Artisan™ AR7300 pre-colored thermoplastics are customized ABS formulations to help manufacturers achieve brilliant and high-gloss metallic effect, excellent chemical resistance, and scratch resistance

Key properties, rheology and property retention and performance data for reSound™ TPEs derived from plant-based sugar for overmolding onto PP and ABS

Key properties, rheology and property retention and performance data for reSound™ TPEs derived from plant-based sugar for overmolding onto PP and ABS

Artisan™ AR7300 pre-colored thermoplastics are customized ABS formulations to help manufacturers achieve brilliant and high-gloss metallic effect, excellent chemical resistance, and scratch resistance

OnFlex-S™ used for overmolding handgrips onto ABS resin

PC化合物：0.001"–0.002" 深，0.250" 宽 PC/PSU化合物：0.002"-0.003" 深，0.250" 宽 PES化合物：0.003"-0.004" 深，0.250" 宽 PEI化合物：0.001"-0.003" 深，0.250" 宽 PP化合物：0.001"-0.002" 深，0.250" 宽 ABS化合物：0.0015"-0.0025" 深，0.250" 宽 PEEK化合物：0.002"-0.004" 深，0.250" 宽 尼龙化合物：0.002"最小深度，0.250" 宽 将离模腔4.0mm（0.250"）处的排气口深度增加到1.0mm（0.040"），并且 通向大气。

PROXY STATEMENT 2023 | Annual Meeting of Shareholders 3 OUR COMPANY CULTURE Avient Corporation was originally established as PolyOne Corporation in 2000. aa) “Predecessor Plans” means the PolyOne Corporation 2010 Equity and Performance Incentive Plan and the PolyOne Corporation 2017 Equity and Incentive Compensation Plan, in each case including as may be (or may have been) amended or amended and restated from time to time. The PolyOne Corporation 2020 Equity and Incentive Compensation Plan was effective as of the Effective Date.

Sustainability Report | 2021 9 https://www.avient.com/careers https://www.avient.com/company/sustainability/people/community-service https://www.avient.com/investors http://endplasticwaste.org Historic Transformation, Inspired Future Avient Corporation was originally established as PolyOne Corporation in 2000 through the consolidation of two companies in the materials industry. Malmoe, Sweden 11. Egypt Tunisia Jamaica Paraguay Croatia Kosovo Slovakia India Oman Uzbekistan Ethiopia Uganda Mexico Peru Cyprus Latvia Slovenia Indonesia Pakistan Vietnam Ghana Zambia Panama Suriname Czech Republic Lithuania Spain Iraq Philippines Yemen Guinea Zimbabwe Puerto Rico Uruguay Denmark Luxembourg Sweden Israel Qatar Ivory Coast Trinidad & Tobago Venezuela Estonia Malta Switzerland Japan Russia Kenya United States Finland Moldova Ukraine Jordan Saudi Arabia Libya France Netherlands United Kingdom Kazakhstan Singapore Mali Sustainability Report | 2021 15 Message from Avient’s VP of Sustainability As the global need for sustainability continues to accelerate, we are continually evolving and taking on the challenge.

Truly global • Technology platform and expertise – Combining the best from two global leaders creates an unmatched portfolio of products and solutions • Global and local accounts – Combining our legacies’ business, dealing with large key accounts and a broad base of regional customers, creates ample opportunities for growth and industry partnering • Talent acquisition and retention – Our ‘best of both worlds’ leadership position helps us to attract and retain the best people in the industry • Cost and performance synergies – Alignment of site structures and technical & commercial organizations is driving a positive cost position An Excellent Fit Avient Corporation 16 • Dedicated global organization • Full suite of performance products • Excellent product stewardship expertise • High quality technical organization • Strong focus on innovation and sustainability • Strong customer relationships and global industry partnerships • Global footprint What Legacy Clariant Color Brings Avient Corporation 17 Customer orientation and dedication Aesthetics + Product Functionality Innovation and Sustainability Safety First o Both ACC Responsible Care® companies o Legacy and continued focus on safety Retain All Customers and Existing Business o Minimize integration disruptions o Broadened portfolio of specialty solutions o World class products and service Retain All Key Employees o Talented, passionate, and collaborative o Supportive, high-performance culture Principles of Integration Avient Corporation 18 $85M Cost • Barrier technology • Functional additives • Processing aids • Flame retardants • Light-weighting Complementary Technologies • Clariant’s approved formulations and certified facilities • Legacy PolyOne’s leading share in distribution channels Healthcare • Clariant’s position in SE Asia, Latin America, Germany & Italy • Legacy PolyOne’s position in U.S., Canada and China Regional Strengths • Solutions with Avient’s engineered materials customers • Avient’s distribution channels Segment Cross-selling Revenue synergy opportunities of $75M The complementary aspects of our combined businesses are unquestionable.

HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 9 https://www.avient.com/company/sustainability/people/community-service https://www.avient.com/investors http://endplasticwaste.org/ Strong Foundation, Confident Future Avient Corporation was originally established as PolyOne Corporation in 2000 through the consolidation of two companies in the materials industry. Malmoe, Sweden 7. Ethiopia Tanzania Marshall Islands Guatemala Colombia Belgium Ireland Slovakia Greater China Nepal Uzbekistan Gabon Tunisia Martinique Haiti Ecuador Bosnia Herzegovina Italy Slovenia India Oman Vietnam Ghana Uganda New Caledonia Honduras Paraguay Bulgaria Latvia Spain Indonesia Pakistan Yemen Guinea Zambia New Zealand Jamaica Peru Croatia Lithuania Sweden Iraq Philippines Ivory Coast Zimbabwe N.