AVIENT: WHO WE ARE 38 21 9 34 • U.S. and Canada • Latin America • Europe, Middle East & Africa • Asia 25,000+ CUSTOMERS Headquartered in Avon Lake, OH (Cleveland) 8,700+ employees 100+ manufacturing plants Key Financial Data 2022E Sales $5.1 billion 2022E EBITDA $635 million 2022E EPS $3.50 >70% ARE CUSTOMIZED SOLUTIONS TO UNIQUE SPECIFICATIONS of sales 3 W H O W E A R E – V I S I O N , S T R AT E G Y, C U LT U R E 4 Avient Corporation (NYSE: AVNT) provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world.

url=http://appliancerepair-salt-lake-city.com/sub-zero-appliance-repair-salt-lake-city/subzero-3d-logo/&rct=j&frm=1&q=&esrc=s&sa=U&ei=-vQmVb-MCefIsQTwwYHQAg&ved=0CBYQ9QEwAA&sig2=qX2fTujBfVO6eYzgLN-xVg&usg=AFQjCNHoUQFUZn7iH7fwVxOz9-WdcIpngA PolyOne Corporation Page 65 Megatrends Aligned with Key End Markets Increasing Energy Efficiency Protecting the Environment Improving Health and Wellness Megatrend End Markets Globalizing and Localizing Health & Wellness Transportation Packaging Consumer PolyOne Distribution PolyOne Corporation Page 66 Geographic Growth Opportunities • Currently 10% of POD’s revenue is generated from Mexico • Existing business is served “from the border” • New Mexico district & warehouse will drive transportation growth in Central Mexico • Expansion in China resulted from growing with our NA HC customers • Investing in sales deployments • Localizing supply • Gaining Share PolyOne Distribution PolyOne Corporation Page 67 Going Beyond Distribution WeatherTech® – Polymer BumpStep® BEDRUG™ – Tri-fold Truck Bed Cover CeQur PaQ – Type 2 Insulin Delivery Device PolyOne Distribution PolyOne Corporation Page 68 Platinum Vision 2.6% 4.6% 6.1% 6.5 - 7.5% 2006 2010 2014 2020 Platinum Vision World Class Distribution Margin Accelerating Growth PolyOne Distribution Market Growth/ Megatrends Commercial Investment Cross-Selling & Collaboration Growth in Targeted Areas PolyOne Corporation Page 69 Summary • Motivated and well trained POD sellers making the calls / collaborating with other PolyOne businesses • Representing a world class supplier line card • Delighted customers and suppliers who choose us to represent them PolyOne Distribution PolyOne Corporation Page 70 Financial Highlights Bradley C.

COMPENSATION DISCUSSION AND ANALYSIS PROXY STATEMENT 2024 | Annual Meeting of Shareholders 49 The 2023 Corporate and Business Segment Annual Plan weightings reflect adjustments from 2022 as follows: Corporate Annual Incentive Program Measure 2022 Weighting 2023 Weighting Adjusted Operating Income (Consolidated) 60% 70% Working Capital as a % of Sales 20% 20% Sustainability Objectives 20% 10% Business Segment Annual Incentive Program Measure 2022 Weighting 2023 Weighting Adjusted Operating Income (Consolidated) 20% 10.5% Adjusted Operating Income (Business Segment results) 40% 59.5% Working Capital as a % of Sales (Business Segment results) 20% 20% Sustainability Objectives 20% 10% We set appropriate performance goals in 2023 under the 2023 Annual Incentive Program that focused our efforts on those factors that we believed were critical to our ongoing success, including earnings improvement, cash generation from working capital, efficiencies in our operations, and the advancement of sustainability initiatives. Total attainment for these participants under the 2023 Annual Incentive Program was 52.5%, with the components consisting of (dollars in millions): COMPENSATION DISCUSSION AND ANALYSIS 50 PROXY STATEMENT 2024 | Annual Meeting of Shareholders 2023 Corporate Plan Annual Incentive Program* (Patterson, Beggs, Kunkle, Rathbun) Measure Weighting Threshold Target Maximum Results Payout % Adjusted Operating Income (consolidated) 70% $314.5 $338.6 $399.6 $312.8 0.0% Working Capital as a % of Sales 20% 12.4% 11.7% 10.7% 10.3% 200.0% Sustainability Objectives 10% See above disclosure for more information about  goals and achievements 125.0% Total Attainment 52.5% *Adjusted operating income (performance measures and results) reported in the table above was calculated with adjustments for special items (as noted on Appendix A) pursuant to the terms of the awards and as approved by the Compensation Committee. Although SARs granted in 2023, 2022 and 2021 would also be EXECUTIVE COMPENSATION 70 PROXY STATEMENT 2024 | Annual Meeting of Shareholders subject to prorata vesting in cases of retirement, disability or death, and full vesting in the case of an involuntary termination following a change in control, the table reflects a value of $0 for the SAR awards, as the grant price in each of these years exceeds the December 29, 2023 closing stock price

In 2023, Avient collected sustainable assessments for 70% of our total direct spend for sourcing. In 2023, Avient collected sustainable assessments for 70% of our total direct spend for sourcing. Avient successfully collected sustainable assessments for 70% of our total direct spend for sourcing.

COMPENSATION DISCUSSION AND ANALYSIS PROXY STATEMENT 2024 | Annual Meeting of Shareholders 49 The 2023 Corporate and Business Segment Annual Plan weightings reflect adjustments from 2022 as follows: Corporate Annual Incentive Program Measure 2022 Weighting 2023 Weighting Adjusted Operating Income (Consolidated) 60% 70% Working Capital as a % of Sales 20% 20% Sustainability Objectives 20% 10% Business Segment Annual Incentive Program Measure 2022 Weighting 2023 Weighting Adjusted Operating Income (Consolidated) 20% 10.5% Adjusted Operating Income (Business Segment results) 40% 59.5% Working Capital as a % of Sales (Business Segment results) 20% 20% Sustainability Objectives 20% 10% We set appropriate performance goals in 2023 under the 2023 Annual Incentive Program that focused our efforts on those factors that we believed were critical to our ongoing success, including earnings improvement, cash generation from working capital, efficiencies in our operations, and the advancement of sustainability initiatives. Total attainment for these participants under the 2023 Annual Incentive Program was 52.5%, with the components consisting of (dollars in millions): COMPENSATION DISCUSSION AND ANALYSIS 50 PROXY STATEMENT 2024 | Annual Meeting of Shareholders 2023 Corporate Plan Annual Incentive Program* (Patterson, Beggs, Kunkle, Rathbun) Measure Weighting Threshold Target Maximum Results Payout % Adjusted Operating Income (consolidated) 70% $314.5 $338.6 $399.6 $312.8 0.0% Working Capital as a % of Sales 20% 12.4% 11.7% 10.7% 10.3% 200.0% Sustainability Objectives 10% See above disclosure for more information about  goals and achievements 125.0% Total Attainment 52.5% *Adjusted operating income (performance measures and results) reported in the table above was calculated with adjustments for special items (as noted on Appendix A) pursuant to the terms of the awards and as approved by the Compensation Committee. Although SARs granted in 2023, 2022 and 2021 would also be EXECUTIVE COMPENSATION 70 PROXY STATEMENT 2024 | Annual Meeting of Shareholders subject to prorata vesting in cases of retirement, disability or death, and full vesting in the case of an involuntary termination following a change in control, the table reflects a value of $0 for the SAR awards, as the grant price in each of these years exceeds the December 29, 2023 closing stock price

The following table summarizes our liquidity as of December 31, 2015: (In millions) Cash and cash equivalents $279.8 Revolving credit availability 341.9 Liquidity $621.7 As of December 31, 2015, 70% of the Company’s cash and cash equivalents resided outside the United States. Based on the current funded status of the plan, our pension asset investment allocation guidelines are to invest 60% to 70% in fixed income securities, 30% to 40% in equity securities and 0% to 10% in alternative investments and cash. In response, Franklin-Burlington and approximately 70 other companies (collectively, the Cooperating Parties) agreed, pursuant to an Administrative Order of Consent with the USEPA, to assume responsibility for development of a RIFS of the lower Passaic River.

Newlin Chairman, President and Chief Executive Officer March 11, 2013 25+38+38 +73+74+95 19+15+9 +56+72+85 Operating Income % Specialty PP&S Distribution Specialty Platform Operating Income % of Total ROIC** (after-tax) 2007 3.2% 6.1% 3.0% 20% 7% 2012 9.1% 9.0% 6.4% 45% 11% 2015 TARGET 12%–16% 9%–12% 6%–7.5% 65%–75% 15% 2012 2011 2010 2009 2008 2007 0 20 40 60 80 100 120 $ mIllIOnS SPECIAlTY PlATFORm OPERATInG InCOmE 40+68+70 +86+84+90201220112010 2009 2008 2007 0 10 20 30 40 50 60 % PERCEnTAGE SPECIAlTY PlATFORm OPERATInG InCOmE % OF TOTAl* 41+33+35 +70+79+93201220112010 2009 2008 2007 0 1 2 3 4 5 6 7 8 % PERCEnTAGE ADJUSTED RETURn On SAlES^ POlYOnE STOCK (POl) PERFORmAnCE VERSUS S&P 2012 2011 2010 2009 2008 2007 0 .20 .40 .60 .80 1.00 1.20 1.40 $ DOll ARS ADJUSTED EARnInGS PER SHARE† 0 .2 .4 .6 .8 1 1.2 *Operating income excludes corporate operating income SAFETY InJURY InCIDEnCE RATE˚ 2012 2011 2010 2009 2008 2007 12.31.09 6.30.10 12.31.10 6.30.11 12.31.11 6.30.12 12.31.12 DATE 200 150 100 50 0 % P E R C E n TA G E POl S&P 600 CHEmICAlS S&P 500 InJURY InCIDEnCE R ATE 91+91+71 +54+47+45 ˚Number of injuries per 100 full time associates^Operating income excludes special items and equity income from SunBelt **ROIC is defined as TTM adjusted OI divided by the sum of average debt and equity over a 5 quarter period †EPS excluding special items and equity income from SunBelt POL 173% S&P 600 Chemicals 34% S&P 500 28% 5 ANNUAL REPORT 2012 Proof of Performance Our values, strategy, commitment and execution are clearly evident in our recent financial and operational performance. Unrecognized compensation cost for RSUs at December 31, 2012 was $7.1 million, which is expected to be recognized over the weighted average remaining vesting period of 15 months. 70 POLYONE CORPORATION Stock Options Our incentive stock plans previously provided for the award or grant of options to purchase our common shares.

We employ approximately 6,300 people and have 70 manufacturing sites and eight distribution facilities in North America, South America, Europe, Asia and Africa. PROPERTIES Headquartered in Avon Lake, Ohio we operate globally with principal locations consisting of 70 manufacturing sites and eight distribution facilities in North America, South America, Europe, Asia and Africa. In response, Franklin-Burlington and approximately 70 other companies (collectively, the Cooperating Parties) agreed, pursuant to an Administrative Order on Consent (AOC) with the USEPA, to assume responsibility for development of a Remedial Investigation and Feasibility Study (RIFS) of the lower Passaic River Study Area.

Intensity figure 0.212534411 Metric numerator (Gross global combined Scope 1 and 2 emissions, metric tons CO2e) 104,134 Metric denominator Avient CDP Climate Change Questionnaire 2022 Friday, July 29, 2022 70 unit of production Metric denominator: Unit total 489,962 Scope 2 figure used Market-based % change from previous year 7.8 Direction of change Decreased Reason for change Our production decreased by 10% while our overall scope 1+2 emissions increased by 3%, leading to a 7.8% decrease of the intensity overall. Avient continues to partner with EcoVadis to evaluate our prioritized suppliers. 70% of these suppliers reported a Silver rating or above in their overall scorecard evaluation.

Lorraine Age: 70 Director Since: 2008 Retired Senior Vice President and Chief Financial Officer of Eastman Chemical Company, a specialty chemicals company. Powell Age: 70 Director Since: 2008 Retired Chairman and Chief Executive Officer of National Starch and Chemical Company, a specialty chemicals company.