WOON KEAT MOH Senior Vice President, President Color, Additives & Inks–Americas and Asia Woon Keat Moh (“Moh”) is senior vice president, president, Color, Additives & Inks, Americas and Asia regions for Avient Corporation, a premier provider of specialized and sustainable material solutions and services. Avient Corporation • 33587 Walker Road • Avon Lake, Ohio 44012 • 440.930.1000 • www.avient.com

IRWIN Senior Vice President, New Business Development & Marketing Excellence Mike Irwin is Senior Vice President, New Business Development & Marketing Excellence for Avient Corporation, the world’s premier provider of specialized and sustainable material solutions and services. Avient Corporation • 33587 Walker Road • Avon Lake, Ohio 44012 • 440.930.1000 • www.avient.com http://www.avient.com/

HOLGER KRONIMUS Vice President, Europe General Manager, Engineered Materials Europe Holger Kronimus is vice president, Europe, and general manager, Specialty Engineered Materials Europe, of Avient Corporation, a premier provider of specialized and sustainable material solutions and services. Avient Corporation • 33587 Walker Road • Avon Lake, Ohio 44012 • 440.930.1000 • www.avient.com

IRWIN Senior Vice President, New Business Development & Marketing Excellence Mike Irwin is Senior Vice President, New Business Development & Marketing Excellence at Avient Corporation, an innovator of materials solutions that help customers succeed while enabling a sustainable world. Avient Corporation • 33587 Walker Road • Avon Lake, Ohio 44012 • 440.930.1000 • www.avient.com

The non‐GAAP financial measures i l d dj t d EPS i b f i t t t d i ti dinclude: adjusted EPS, earnings before interest, tax, depreciation and amortization (EBITDA), adjusted EBITDA, net debt, Specialty platform operating income, Specialty platform gross margin percentage, adjusted operating income, return on invested capital, net debt/ EBITDA, and the exclusion of corporate p p charges in certain calculations. Page 3 Strategy and Execution Drive Results 90% $22 $24 PolyOne Stock Price 50% 70% $18 $20 $22 S&P 500 (relative performance) 30% $12 $14 $16 S&P 500 (relative performance) ‐10% 10% $6 $8 $10 50% ‐30% $0 $2 $4 $ | ‐50%$0 2006 2007 2008 2009 2010 2011 2012 2013 Page 4 Four Pillar Strategy The World’s Premier Provider of SpecializedThe World s Premier Provider of Specialized Polymer Materials, Services & Solutions Page 5 Spartech – Compelling Strategic Rationale • Spartech expands PolyOne’s specialty portfolio with adjacent technologies in attractive end markets  Bolt on acquisition with opportunity for global expansion as only Bolt‐on acquisition with opportunity for global expansion, as only 6% of Spartech’s revenues are outside of North America • PolyOne has a proven management team with a track record of transformational success • Preliminary synergy estimated at $65 million run rate by end of 3year 3  Significant opportunity to expand profitability by leveraging PolyOne’s four pillar strategy • Substantial potential share price appreciation for all shareholders f f ll / $ Accretive to EPS in first full year post‐acquisition / $0.50 once synergies realized Page 6 Mix Shift Highlights Specialty Transformation Old PolyOne Transformation 100% 2015 Target 80% In co m e* 65 – 75%40% 60% f O pe ra tin g 34% 43% 45% 65 75% 20% % o f 2%0% 2005 2008 2010 2012 2015 Specialty OI $5M $46M $87M $114M Target *Operating Income excludes corporate charges and special items JV's PP&S Distribution Specialty Page 7 Proof of Performance 2007 2012 2015 “Where we were” “Where we are” “Where we Where we were Where we are expect to be" 1) Operating Income % Specialty 3.2% 9.1% 12 – 16% PP&S 6.1% 9.0% 9 – 12% Distribution 3.0% 6.4% 6 – 7.5% 2) Specialty Platform sss% of Operating Income 20% 45% 65 – 75% 3) ROIC* ( ft t ) 7% 11% 15%3) ROIC* (after‐tax) 7% 11% 15% 4) Adjusted EPS Growth** N/A 4 yr CAGR = 55% Double Digit Expansion *ROIC is defined as TTM adjusted OI divided by the sum of average debt and equity over a 5 quarter period **4 yr EPS CAGR calculated using 2012 adjusted EPS vs 2008 adjusted EPS Page 8 Proof of Performance Spartech Opportunity Intermediate PolyOne Spartech Opportunity 2006 2012 Today Goal “Where we were” “Where we are” “Where Spartech is”* “Where we can go”were are Spartech is can go Specialty Operating Margin 1.5% 9.1% 2.2% 8.0% – 10.0% Margin Page 9 *Pro Forma results include Spartech corporate allocations for FY12 ended November 3, 2012 At a Glance PolyOne Europe 14% Canada 8% Asia 5% Latin America 3% Distribution 2012 Revenues: $4.2 Billion* 2012 Revenues: $4.2 Billion* United States 70% 14% 5% PP&S 20%Specialty 57% 23% 70% Appliance 5% Building & HealthCare Transportation 16% Textiles 2% 1.02 1.20 $1.20 $1.40 ha re End Markets* EPS Growth g Construction 14% Wire & Cable 8% Consumer 8% Packaging 17% Industrial 11% Misc. 6% 9% 0.27 0 21 0.79 $0.40 $0.60 $0.80 $1.00 Ad ju st ed E ar ni ng s P er S Electrical & Electronics 4% 0.12 0.21 0.13 $0.00 $0.20 2006 2007 2008 2009 2010 2011 2012 Page 10 * Pro Forma includes FY2012 results for Spartech (11/03/12 YE) and Glasforms At a Glance Specialty U it d 2012 Revenues: $2.4 Billion* Solutions United States 59% Europe 23% Asia Canada 4% Asia 9% Latin America 5% Appliance 4% Building & C t ti HealthCare 5% Transportation 16% Textiles 2% % o f S al es 12-16% End Markets* Expanding Profits Construction 11% Wire & Cable 7% Electrical & Electronics Packaging 23% Industrial 7% Misc. 15% 1.5% 3.2% 4.3% 5.3% 8.4% 9.1% O pe ra tin g In co m e % 8.0% Electronics 4% Consumer 6% Page 11 2006 2007 2008 2009 2010 2011 2012 2015 O Target* Pro Forma includes FY2012 results for Spartech (11/03/12 YE) and Glasforms At a Glance Designed Structures and Solutions United States 2012 Revenues: $0.85 Billion* Solutions 84% Europe 2% Canada 7% Latin America 7% Appliance 4% Building & Construction 11% Wire & Cable Sign & Advertising 3% Recreation & Leisure 2% Pool & Spa 1% Distribution & Thermoform 8% Textiles 2% Operating Income % of Sales 2012 Revenue by Industry Segment* Expanding Profits** Wire & Cable 7% Electrical & Electronics 4% Consumer 6% Packaging 23%Industrial 7% Transportation 16% 3% 2.2% 8 ‐ 10% 7% Misc. 1% HealthCare 5% 2012 2015 Target Page 12 *Pro Forma includes FY2012 results for Spartech (11/03/12 YE) **Pro Forma results include Spartech corporate allocations for FY12 Positioned for Earnings Growth 2015 Target Rev: $5B Adj. Platform operating income mix percentage 2005Y 2006Y 2007Y 2008Y 2009Y 2010Y 2011Y Global Specialty Engineered Materials $ 0.4 $ 3.9 $ 4.9 $ 17.6 $ 20.6 $ 49.7 $ 45.9 Global Color, Additives and Inks 4.3 8.9 25.7 28.1 25.2 37.7 43.4 Specialty Platform $ 4.7 $ 12.8 $ 30.6 $ 45.7 $ 45.8 $ 87.4 $ 89.3 Performance Products and Solutions 75.7 64.2 65.8 31.3 33.1 54.0 62.4 Distribution 19.5 19.2 22.1 28.1 24.8 42.0 56.0 SunBelt Joint Venture 91.9 102.9 34.8 28.6 25.5 18.9 5.0 Corporate (51.5) 34.5 (73.3) (425.1) 7.9 (27.7) 20.3 Operating income (loss) GAAP $ 140.3 $ 233.6 $ 80.0 $ (291.4) $ 137.1 $ 174.6 $ 233.0 Less: Corporate operating expense (income) 51.5 (34.5) 73.3 425.1 (7.9) 27.7 (20.3) Operating income excluding Corporate $ 191.8 $ 199.1 $ 153.3 $ 133.7 $ 129.2 $ 202.3 $ 212.7 Specialty platform operating mix percentage 2% 6% 20% 34% 35% 43% 42% Platform operating income mix percentage 2012Y Global Specialty Engineered Materials $ 47.0 Global Color, Additives and Inks 66.8 Specialty Platform $ 113.8 Performance Products and Solutions 74.9 Distribution 66.0 Corporate (87.6) Operating income GAAP $ 167.1 Less: Corporate operating expense 87.6 Operating income excluding Corporate $ 254.7 Specialty platform operating mix percentage 45% Platform sales and operating income (OI) 2006Y 2007Y 2008Y 2009Y 2010Y 2011Y Global Specialty Engineered Materials Sales $ 345.3 $ 384.4 $ 514.0 $ 402.9 $ 517.4 $ 575.1 Global Color, Additives and Inks Sales 531.8 560.5 554.3 459.8 527.4 544.6 Specialty Platform Sales $ 877.1 $ 944.9 $ 1,068.3 $ 862.7 $ 1,044.8 $ 1,119.7 Performance Products and Solutions Sales 1,166.2 1,086.8 1,001.4 667.7 776.3 865.4 PolyOne Distribution Sales 732.8 744.3 796.7 625.1 911.9 996.5 Corporate and Eliminations (153.7) (133.3) (127.7) (94.8) (111.1) (118.1) Total Sales $ 2,622.4 $ 2,642.7 $ 2,738.7 $ 2,060.7 $ 2,621.9 $ 2,863.5 Global Specialty Engineered Materials OI $ 3.9 $ 4.9 $ 17.6 $ 20.6 $ 49.7 $ 45.9 Global Color, Additives and Inks OI 8.9 25.7 28.1 25.2 37.7 43.4 Specialty Platform OI $ 12.8 $ 30.6 $ 45.7 $ 45.8 $ 87.4 $ 89.3 Performance Products and Solutions OI 64.2 65.8 31.3 33.1 54.0 62.4 PolyOne Distribution OI 19.2 22.1 28.1 24.8 42.0 56.0 Sunbelt Joint Venture OI 102.9 34.8 28.6 25.5 18.9 5.0 Corporate and eliminations (4.6) (25.5) (28.9) (40.8) (32.5) (26.4) Special items in OI 39.1 (47.8) (396.2) 48.7 4.8 46.7 Operating income (loss) GAAP $ 233.6 $ 80.0 $ (291.4) $ 137.1 $ 174.6 $ 233.0 Sunbelt equity income (107.0) (40.8) (32.5) (29.7) (23.1) (5.7) Special items in OI (39.1) 47.8 396.2 (48.7) (4.8) (46.7) Operating income adjusted $ 87.5 $ 87.0 $ 72.3 $ 58.7 $ 146.7 $ 180.6 Global Specialty Engineered Materials - OI % of sales 1.1% 1.3% 3.4% 5.1% 9.6% 8.0% Global Color, Additives and Inks - OI % of sales 1.7% 4.6% 5.1% 5.5% 7.1% 8.0% Specialty platform OI - % of sales 1.5% 3.2% 4.3% 5.3% 8.4% 8.0% PP&S operating OI - % of sales 5.5% 6.1% 3.1% 5.0% 7.0% 7.2% Distribution OI - % of sales 2.6% 3.0% 3.5% 4.0% 4.6% 5.6% PolyOne OI adjusted - % of sales 3.3% 3.3% 2.6% 2.8% 5.6% 6.3% Platform sales and operating income (OI) 2012Y 2012PF Global Specialty Engineered Materials Sales $ 543.6 $ 779.5 Global Color, Additives and Inks Sales 703.5 753.8 Designed Structures & Solutions 847.4 Specialty Platform Sales $ 1,247.1 $ 2,380.7 Performance Products and Solutions Sales 837.0 902.8 PolyOne Distribution Sales 1,030.3 1,030.3 Corporate and Eliminations (121.8) (121.8) Total Sales $ 2,992.6 $ 4,192.0 Global Specialty Engineered Materials OI $ 47.0 Global Color, Additives and Inks OI 66.8 Specialty Platform OI $ 113.8 Performance Products and Solutions OI 74.9 PolyOne Distribution OI 66.0 Corporate and eliminations (33.7) Special items in OI (53.9) Operating income - GAAP $ 167.1 Special items in OI 53.9 Operating income adjusted $ 221.0 Global Specialty Engineered Materials - OI % of sales 8.6% Global Color, Additives and Inks - OI % of sales 9.5% Specialty platform OI % of sales 9.1% PP&S operating OI % of sales 9.0% Distribution OI % of sales 6.4% PolyOne OI adjusted, % of sales 7.4% Adjusted EPS 2006Y 2007Y 2008Y 2009Y 2010Y 2011Y 2012Y Net Income attributable to PolyOne common shareholders $ 130.9 $ 40.9 $ (417.0) $ 106.7 $ 162.6 $ 172.6 $ 71.9 SunBelt equity earnings, after tax (68.5) (26.1) (20.8) (19.0) (14.7) (3.7) - Special items, after tax (21.2) 41.4 310.0 (31.0) 15.8 (30.5) 35.7 Tax adjustments (30.0) (30.7) 147.2 (44.9) (88.3) (42.3) 0.5 Adjusted net income $ 11.2 $ 25.5 $ 19.4 $ 11.8 $ 75.4 $ 96.1 $ 108.1 Diluted shares 92.8 93.1 92.7 93.4 96.0 94.3 89.8 Adjusted EPS $ 0.12 $ 0.27 $ 0.21 $ 0.13 $ 0.79 $ 1.02 $ 1.20 Average Debt Q4 2011 Q1 2012 Q2 2012 Q3 2012 Q4 2012 Average PolyOne Debt $ 707.0 $ 706.4 $ 705.8 $ 705.2 $ 706.9 $ 706.3 Average Equity Q4 2011 Q1 2012 Q2 2012 Q3 2012 Q4 2012 Average PolyOne shareholders’ equity $ 588.3 $ 611.3 $ 604.3 $ 629.3 $ 629.1 $ 612.5 Adjusted EBITDA 2012 PolyOne Income before income taxes $ 113.0 PolyOne Interest expense, net 50.8 PolyOne Depreciation and amortization 69.8 PolyOne Special items in EBITDA 55.1 PolyOne Adjusted EBITDA $ 288.7 Pro forma Spartech EBITDA * 56.3 Pro forma EBITDA * $ 345.0 * Amount excludes expected synergies.

PEDERSON Senior Vice President, President of Specialty Engineered Materials Chris Pederson is senior vice president, president, Specialty Engineered Materials, for Avient Corporation, a premier provider of specialized and sustainable material solutions and services. Just prior to joining Avient in 2018, he was vice president of Strategy at Hexcel Corporation, responsible for the company’s M&A strategy and execution. Avient Corporation • 33587 Walker Road • Avon Lake, Ohio 44012 • 440.930.1000 • www.avient.com

JOHN MIDEA Senior Vice President, Global Operations and Process Improvement John Midea is Senior Vice President, Global Operations and Process Improvement at Avient Corporation, an innovator of materials solutions that help customers succeed while enabling a sustainable world. He spent 12 years at Valspar Corporation with increasing roles of responsibility, including Vice President, where he was accountable for the North American segment of its liquid, powder, electrocoat and after market specialty chemical businesses. Avient Corporation • 33587 Walker Road • Avon Lake, Ohio 44012 • 440.930.1000 • www.avient.com

GIUSEPPE DI SALVO Vice President, Treasurer and Investor Relations Giuseppe “Joe” Di Salvo is Vice President, Treasurer and Investor Relations at Avient Corporation, an innovator of materials solutions that help customers succeed while enabling a sustainable world. He was then promoted to vice President, Corporate Controller. Avient Corporation • 33587 Walker Road • Avon Lake, Ohio 44012 • 440.930.1000 • www.avient.com

AVIENT RESPONSIBLE CARE POLICY Avient Corporation conducts its operations in a manner that is protective of the environment, and the health, safety and security of associates, customers, and all our stakeholders, including the communities in which we operate. Ashish Khandpur President and CEO December 18, 2023 ENVIRONMENTAL POLICY Avient Corporation conducts its operations in an environmentally responsible manner that is protective of the communities in which we operate. Ashish Khandpur President and CEO December 18, 2023 SAFETY & HEALTH POLICY Avient Corporation believes that safety and health are the highest corporate priority.

Office Supplies Home & Office