Buyer shall accept, as full and complete performance by Seller, deliveries in accordance with such determinations as Seller may make. These Terms, together with (i) the product description, quantity, price, and payment terms stated on Seller’s order confirmation, (ii) any credit agreement, and (iii) the Specifications, if any, constitute the complete and final agreement and understanding between Seller and Buyer relating to the Product and supersede all prior oral or written communications, agreements, understandings, representations, statements, and assurances between the parties.

Buyer shall accept, as full and complete performance by Seller, deliveries in accordance with such determinations as Seller may make. These Terms, together with (i) the product description, quantity, price, and payment terms stated on Seller’s order confirmation, (ii) any credit agreement, and (iii) the Specifications, if any, constitute the complete and final agreement and understanding between Seller and Buyer relating to the Product and supersede all prior oral or written communications, agreements, understandings, representations, statements, and assurances between the parties.

Buyer shall accept, as full and complete performance by Seller, deliveries in accordance with such determinations as Seller may make. These Terms, together with (i) the product description, quantity, price, and payment terms stated on Seller’s order confirmation, (ii) any credit agreement, and (iii) the Specifications, if any, constitute the complete and final agreement and understanding between Seller and Buyer relating to the Product and supersede all prior oral or written communications, agreements, understandings, representations, statements, and assurances between the parties.

Buyer shall accept, as full and complete performance by Seller, deliveries in accordance with such determinations as Seller may make. These Terms, together with (i) the product description, quantity, price, and payment terms stated on Seller’s order confirmation, (ii) any credit agreement, and (iii) the Specifications, if any, constitute the complete and final agreement and understanding between Seller and Buyer relating to the Product and supersede all prior oral or written communications, agreements, understandings, representations, statements, and assurances between the parties.

While residential housing completions are trending up, permits and starts are down, according to the latest US Census Bureau data. Census Bureau, HUD, October 18, 2024 Sep-23 Sep-24 Permits Starts Completions Factors affecting these data points include labor shortages, rising demand for housing, mortgage interest rates, and a heightened emphasis on sustainability.

The team entered material data relevant to ergonomic performance into the FEA software to complete the model . A stress-strain curve was used to extract the stiffness value for the Complēt™ material . The setup was completed by fixing the impact surface of the hammer and applying a 1g (gravity force = 9 .8 m/s/s) excitation in the X-direction, as shown in Figure 21 .

Just a few months ago, we completed the acquisition of the Clariant Masterbatch business, the largest acquisition in the 20-year history of our company. Q 4 A N D F U L L Y E A R 2 0 2 0 P E R F O R M A N C E $0.30 $0.52 2019 PF 2020 Q4 2020 ORGANIC PERFORMANCE 9 Sales $922 $997 2019 PF 2020 +8% Adjusted Operating Income Adjusted EPS $58 $80 2019 PF 2020 +38% +73% • Record 4th quarter sales, adjusted operating income and adjusted EPS performance • All segments delivered year-over-year sales and operating income growth, led by consumer and healthcare end markets • Clariant Masterbatch integration synergy capture ahead of schedule: $5 million realized in 2020 ($ in millions except EPS) (1) (1) (1) (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition Q4 2020 SEGMENT PERFORMANCE 10 Sales Operating Income $100 $100 $100 $922 $100 $100 $100 $997 Distribution CAI SEM Total 2019 2020 $178 $272 $490 $191 $305 $526 SEM Distribution CAI 2019PF 2020 +8% +7% +7% +12% $5 $5 $5 $58 $5 $5 $5 $80 Avient CAI SEM Total 2019 PF 2020 $17 $19 $40 $18 $30 $58 Distribution SEM CAI 2019PF 2020 +38% +45% +58% +6% (3) (3) ($ in millions) (1) (2) (1) Total company sales include intercompany sales eliminations (2) Total company reflects adjusted operating income and includes corporate costs (3) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition 2020 HIGHLIGHTS 11 • Completed transformational Clariant Masterbatch acquisition and created new brand name Avient • Increased pro forma adjusted EPS 11% from $1.74 to $1.93 as an essential supplier during the pandemic and due to growth in demand for consumer applications • Specialty Engineered Materials delivered record operating income on gains from composites • Achieved record free cash flow, increased dividend for 10th year in a row and delevered from 3.5x to 2.7x net debt to pro forma adjusted EBITDA • Culture is everything: Certified as a Great Place to Work® $133 $150 2019PF 2020PF 10% 23%8% 21% 4% 15% 2006 2020PF Healthcare Consumer Packaging Avient Portfolio Transformation 22% 59% CLARIANT MASTERBATCH: TRANSFORMATIONAL ACQUISITION 12 Clariant MB EBITDA Growth Purchase Price Multiple 10.8 9.6 6.5 2019PF 2020PF 2020PF w/ Full Synergies x x x • Acquisition of Clariant Masterbatch significantly expands presence in healthcare, packaging and consumer end markets • Strength of portfolio – 13% EBITDA growth as an essential supplier in COVID response and recovery • Acquisition completed on July 1, 2020 for $1.4 billion. Our free cash flow supports shareholder value creation through investing in R&D for organic growth, completing bolt-on acquisitions, and returning cash to shareholders via our dividend program and opportunistic share repurchases. 26 1.

On January 3, 2017, the Company completed the acquisition of SilCoTec, Inc. Recent Developments On January 3, 2017, the Company completed the acquisition of SilCoTec, Inc. These actions are substantially complete as of December 31, 2016.

That’s Avient. 25,000+ CUSTOMERS >70% ARE CUSTOMIZED SOLUTIONS TO UNIQUE SPECIFICATIONS of sales 5 In July 2020, we completed the acquisition of the Clariant Color business, the largest acquisition in the 20-year history of our company. We are Avient. 6 B ET T E R TO G E TH E R : P O LYO NE A N D C L A R I A N T C O LO R Key Financial Data 2021 Sales $4.8 billion 2021 EBITDA $581 million 87% of EBITDA from specialty applications 2 0 2 1 P E R F O R M A N C E $80 $85 2020 2021 $0.52 $0.58 2020 2021 Q4 2021 PERFORMANCE ( T O TA L C O M PA N Y ) 8 Sales Adjusted Operating Income $997 $1,202 2020 2021 + 21% Adjusted EPS + 6% + 12% (in millions) (in millions) $308 $429 2020PF 2021 $1.93 $3.05 2020PF 2021 FULL YEAR 2021 PERFORMANCE ( T O TA L C O M PA N Y ) 9 Sales Adjusted Operating Income $3,783 $4,819 2020PF 2021 + 27% Adjusted EPS + 39% + 58% (in millions) (in millions) (1) Financial information is pro forma to include a full year of Clariant Color business (1) (1) (1) FULL YEAR 2021 SEGMENT PERFORMANCE 10 CAI $2,043 $2,402 Sales ($ in millions) SEM Distribution $226 $303 Operating Income + 18% + 34% $1,110 $1,631 Sales $70 $93 Operating Income + 47% + 33% (1) $709 $919 Sales $94 $132 Operating Income + 30% + 40% (1) Financial information is pro forma to include a full year of Clariant Color business (1) Full Year 2020 (Pro forma) $3,783 $308 Sustainable Solutions 147 19% 60 Healthcare 143 28% 30 Composites 58 43% 29 Growth in Asia / LATAM 107 21% 26 Other 543 30% 58 Sub-total $4,781 26% $511 Wage Inflation and Overtime (39) Other Supply Chain Costs (15) COVID Response Applications (22) (12) Synergies 44 FX, Incentives, Other Employee Costs 60 (60) Full Year 2021 $4,819 27% $429 FULL YEAR 2021 SALES AND OPERATING INCOME ( T O TA L C O M PA N Y ) 11 Sales Growth Rate Adjusted Operating Income$ millions (1) Financial information is pro forma to include a full year of Clariant Color business (1) Adjusted EBITDA 12 Full Year 2020 (Pro forma) $ 457 Demand 135 $ millions CAI: Price / Mix 158 Inflation (120) SEM: Price / Mix 84 Inflation (65) Distribution: Price / Mix 318 Inflation (304) Net Price Benefit 71 Wage Inflation and Overtime (39) Other Supply Chain Costs (15) COVID Response Applications (12) Synergies 44 Incentives, FX, Other Employee Costs (60) Full Year 2021 $ 581    (1) Financial information is pro forma to include a full year of Clariant Color business (1) • Demand impact driven by growth in key focus areas: sustainable solutions, healthcare, composites and growth in Asia / LATAM • Price increases more than offset raw material and supply chain impacts FULL YEAR 2021 EBITDA BRIDGE SPECIALTY EBITDA MARGIN EXPANSION 13 CAI (1) 2018-2020 financial information is pro forma to include a full year of Clariant Color business 15.3% 15.2% 16.2% 17.0% 2018 2019 2020 2021 14.8% 15.2% 17.6% 17.8% 2018 2019 2020 2021 (1) SEM • Record margins in 2021 despite unprecedented supply chain challenges • Continued portfolio transformation to high-growth end markets and sustainable solutions • Clariant Color synergy realization • Investments in composites and outdoor high performance applications drove growth and mix improvements • Acquisition of Clariant Color business significantly expanded presence in healthcare, packaging and consumer end markets • Strength of portfolio – double-digit annual EBITDA growth since acquisition • $54 million of synergies realized in 2021 • Acquisition completed on July 1, 2020 for $1.45 billion. Our free cash flow supports shareholder value creation through investing in R&D for organic growth, completing bolt-on acquisitions, and returning cash to shareholders via our dividend program and opportunistic share repurchases. 31 1.

Rev 12-05-2023 Avient Corporation: Quality Response for Manufacturing Facilities in North America, North LATAM, Europe, the Middle East, and Africa 2 Dear Customer, This Quality Response for Manufacturing Facilities in North America, Europe, the Middle East and Africa, is being provided in response to your request to complete and return your supplier questionnaire / assessment. Many customers have asked us to complete their supplier questionnaire.