Use of Non GAAP Measures Page 3 -150.00% -100.00% -50.00% 0.00% 50.00% 100.00% 150.00% 200.00% 250.00% 300.00% 350.00% PolyOne S&P 500 Strategy and Execution Drive Results – Since 2006: Page 4 All time closing high of $26.63 May 28, 2013 • 14 consecutive quarters of double digit EPS growth • 380 basis point increase in return on sales • 300% share price expansion • 300% increase in total shareholder return • 42% CAGR EPS expansion • $1.8 billion increase in market cap • Track record of successful acquisitions The World’s Premier Provider of Specialized Polymer Materials, Services & Solutions Four Pillar Strategy Page 5 2013 Portfolio Transformation Highlights • Substantial organic mix improvement drives 29% increase in first quarter EPS – 14th consecutive quarter of double-digit EPS growth • Completed acquisition of Spartech • Announced the creation of a new Specialty segment – Designed Structures and Solutions • Completed the sale of our non-core resin assets • Realigned our Specialty Coatings business into our GCAI segment Page 6 PP&S 15% Specialty 60% Distribution 25% 0.12 0.27 0.21 0.13 0.68 0.82 1.00 2.50 $0.00 $0.25 $0.50 $0.75 $1.00 $1.25 $1.50 $1.75 $2.00 $2.25 $2.50 2006 2007 2008 2009 2010* 2011* 2012* 2015 Target A dj us te d Ea rn in gs P er S ha re Appliance 6% Building & Construction 13% Wire & Cable 9% Electrical & Electronics 4% Consumer 9% Packaging 18% Industrial 10% Misc. 5% HealthCare 9% Transportation 16% Textiles 1% United States 70% Europe 14% Canada 8% Asia 5% Latin America 3% 2012 Revenues: $4.0 Billion* End Markets* 2012 Revenues: $4.0 Billion* EPS Page 7 * Pro Forma includes FY2012 results for Spartech (11/03/12 YE) and Glasforms & excludes discontinued operations PolyOne At A Glance * Restated to exclude discontinued operations Old PolyOne Transformation *Operating Income excludes corporate charges and special items **Pro Forma results include Spartech and Glasforms acquisitions, Specialty Coatings reclass and excludes resin assets 2% 34% 43% 45% 60% 65 – 75% 0% 20% 40% 60% 80% 100% 2005 2008 2010 2012 2012PF** 2015 % o f O pe ra ti ng In co m e* JV's PP&S Distribution Specialty Specialty OI $5M $46M $87M $114M $150M Target Mix Shift Highlights Specialty Transformation 2015 Target Page 8 2007 Q1 2013 2015 Target 1) Operating Income % Specialty: Global Color, Additives & Inks 4.6% 11.7% 12 – 16% Global Specialty Engineered Materials 1.3% 10.1% 12 – 16% Designed Structures & Solutions -- 4.6% 8 – 10% Performance Products & Solutions 6.1% 8.1% 9 – 12% Distribution 3.0% 6.0% 6 – 7.5% 2) Specialty Platform % of Operating Income 20% 60% 65 – 75% 3) ROIC* (after-tax) 7% 9.2% 15% 4) Adjusted EPS Growth N/A 29% Double Digit Expansion Proof of Performance & 2015 Goals *ROIC is defined as TTM adjusted OI divided by the sum of average debt and equity over a 5 quarter period Page 9 *Percentage of Specialty Platform revenue from products introduced in last five years 19.5% 50.0% 2006 Q1 2013 $20.3 $41.9 2006 2012 14.3% 27.8% 2006 Q1 2013 Research & Development Spending Specialty Platform Vitality Index Progression* Innovation Drives Earnings Growth ($ millions) Specialty Platform Gross Margin % Page 10 We are Experts in Polymer Science and Formulation  Polymer Science  Formulation  Chemistry  Processing Inputs  Base Resins  Additives  Modifiers  Colorants Specialized Polymer Materials, Services, and Solutions Expertise Satisfied Consumers PolyOne Customer Innovative Products & Services  Marketplace Demands  Performance Requirements  Value Drivers Page 11 Positioned for Strong Growth 2015 Target Rev: $5B Adj. EPS: $2.50 Assumptions • Operating margins in mid-range of 2015 targets • No global recession • No investment in incremental PP&S capacity • Completion of 2-3 midsize accretive acquisitions • Housing starts at 85% of 50 year norm by 2015 • Mid single digit revenue CAGR • Remain comfortably below 3X Net Debt / EBITDA Page 12 2012 Rev: $2.9B Adj.

Use of Non GAAP Measures Page 3 -150.00% -100.00% -50.00% 0.00% 50.00% 100.00% 150.00% 200.00% 250.00% 300.00% 350.00% PolyOne S&P 500 Strategy and Execution Drive Results Page 4 • Since 2006, PolyOne stock has expanded approximately 300% vs. a 30% increase in the S&P 500 All time closing high of $26.63 May 28, 2013 The World’s Premier Provider of Specialized Polymer Materials, Services & Solutions Four Pillar Strategy Page 5 2013 Portfolio Transformation Highlights • Substantial organic mix improvement drives 29% increase in first quarter EPS – 14th consecutive quarter of double-digit EPS growth • Completed acquisition of Spartech • Announced the creation of a new Specialty segment – Designed Structures and Solutions • Completed the sale of our non-core resin assets • Realigned our Specialty Coatings business into our GCAI segment Page 6 0.12 0.27 0.21 0.13 0.68 0.82 1.00 2.50 $0.00 $0.25 $0.50 $0.75 $1.00 $1.25 $1.50 $1.75 $2.00 $2.25 $2.50 2006 2007 2008 2009 2010* 2011* 2012* 2015 Target A dj us te d Ea rn in gs P er S ha re Appliance 6% Building & Construction 13% Wire & Cable 9% Electrical & Electronics 4% Consumer 9% Packaging 18% Industrial 10% Misc. 5% HealthCare 9% Transportation 16% Textiles 1% PP&S 15% Specialty 60% Distribution 25% United States 70% Europe 14% Canada 8% Asia 5% Latin America 3% 2012 Revenues: $4.0 Billion* End Markets* 2012 Revenues: $4.0 Billion* EPS Page 7 * Pro Forma includes FY2012 results for Spartech (11/03/12 YE) and Glasforms & excludes resin assets PolyOne At A Glance * Restated to exclude discontinued operations Old PolyOne Transformation *Operating Income excludes corporate charges and special items **Pro Forma results include Spartech and Glasforms acquisitions, Specialty Coatings reclass and excludes resin assets 2% 34% 43% 45% 60% 65 – 75% 0% 20% 40% 60% 80% 100% 2005 2008 2010 2012 2012PF** 2015 % o f O pe ra ti ng In co m e* JV's PP&S Distribution Specialty Specialty OI $5M $46M $87M $114M $150M Target Mix Shift Highlights Specialty Transformation 2015 Target Page 8 2007 Q1 2013 2015 Target 1) Operating Income % Specialty: Global Color, Additives & Inks 4.6% 11.7% 12 – 16% Global Specialty Engineered Materials 1.3% 10.1% 12 – 16% Designed Structures & Solutions -- 4.6% 8 – 10% Performance Products & Solutions 6.1% 8.1% 9 – 12% Distribution 3.0% 6.0% 6 – 7.5% 2) Specialty Platform % of Operating Income 20% 60% 65 – 75% 3) ROIC* (after-tax) 7% 9.2% 15% 4) Adjusted EPS Growth N/A 29% Double Digit Expansion Proof of Performance & 2015 Goals *ROIC is defined as TTM adjusted OI divided by the sum of average debt and equity over a 5 quarter period Page 9 *Percentage of Specialty Platform revenue from products introduced in last five years 19.5% 50.0% 2006 Q1 2013 $20.3 $41.9 2006 2012 14.3% 27.8% 2006 Q1 2013 Research & Development Spending Specialty Platform Vitality Index Progression* Innovation Drives Earnings Growth ($ millions) Specialty Platform Gross Margin % Page 10 Positioned for Strong Growth 2015 Target Rev: $5B Adj. EPS: $2.50 Assumptions • Operating margins in mid-range of 2015 targets • No global recession • No investment in incremental PP&S capacity • Completion of 2-3 midsize accretive acquisitions • Housing starts at 85% of 50 year norm by 2015 • Mid single digit revenue CAGR • Remain comfortably below 3X Net Debt / EBITDA Page 11 2012 Rev: $2.9B Adj.

No. 0514.02) Revised 10/08/2019 Page 1 of 2 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2005 POLYMER DIAGNOSTICS INC. 33587 Walker Road Avon Lake, OH 44012 Ana De La Ree Phone: 440-930-3271 CHEMICAL Valid To: December 31, 2019 Certificate Number: 0514.02 In recognition of the successful completion of the A2LA evaluation process, accreditation is granted to this laboratory to perform the following rubber and plastics tests: Test Description: Test Method or Standard: Analysis of Volatile Contaminants from Polymers (Chromatography) VDA 277 FTIR (Fourier Transform Infrared) Spectroscopy ASTM E1252 (Except 7.6, 11.2, and 11.4) Flammability Horizontal Burn of Self-Supporting Plastics ASTM D635; UL 94; IEC 60695-11-10 Horizontal Burn of Materials Used in Occupant Compartments of Motor Vehicles ASTM D5132; FMVSS 302 (49 CFR 571.302) Vertical Burn, 20 mm ASTM D3801; UL 94; IEC 60695-11-10 Vertical Burn, 125 mm ASTM D5048; UL 94; IEC 60695-11-20 Oxygen Index ASTM D2863 FT1 Flame Test UL1581, Clause 1060; UL2556/CSA C22.2 No 2556, Clause 9.3 Cable Flame Test UL1581, Clause 1061 VW1 Flame Test UL1581, Clause 1080; UL2556/CSA C22.2 No 2556, Clause 9.4 FT2/FH Flame Test UL1581, Clause 1100; UL2556/CSA C22.2 No 2556, Clause 9.1 FV-1 Flame Test UL1581, Clause 1060; UL2556/CSA C22.2 No 2556, Clause 9.5 Thin Material Burning Test UL-94 Glow Wire Test IEC 60695 2-10, 2-11, 2-12, 2-13 RVCM in PVC ASTM D4443 (A2LA Cert.

The good news is there have been numerous studies completed on phthalates.

Nikrant Page 67 United States 36% Europe 36% Canada 2% Asia 20% Latin America 2011 Revenue: $0.6 Billion2011 Revenue: $0.6 Billion SolutionsSolutions At a Glance Global Specialty Engineered Materials Appliance 6% Building & Construction 3% Wire & Cable 14% Electrical & Electronics 14%Consumer 21% Packaging 5% Industrial 8% Misc. 3% HealthCare 5% Transportation 21% America 6% 2011 Revenue by Industry Segment2011 Revenue by Industry Segment 1.1% 1.3% 3.4% 5.1% 9.6% 8.0% 12-16% 2006 2007 2008 2009 2010 2011 2015 Operating Income % of Sales Target Expanding ProfitsExpanding Profits Page 68 Value Proposition • GSEM is a global leader providing complete specialty solutions encompassing innovative technologies and services to enable customer success Transformation Highlights • Dramatic turnaround of the Engineered Materials business through mix improvement and specialty focus Value Proposition and Transformation Highlights Global Specialty Engineered Materials improvement and specialty focus • GLS acquisition successfully integrated, having more than doubled earnings in 3 years • PolyOne culture and strategy now engrained worldwide • Expansion into healthcare with dedicated resources > $15B Addressable Market Page 69 • Polymer design, formulation and service expertise • Broad, global technology base and regional centers of excellence • Ten innovation centers around the world Key Differentiators Global Specialty Engineered Materials • Ten innovation centers around the world • Specialty brand leadership with PolyOne, GLS, NEU and ECCOH • Ability to leverage global key account team Page 70 From Volume Commodity-driven product portfolio To Value Specialty technology and solutions EM North America Transformation Volume Sales Gross Margin $ Mix Transformation – Executing the Strategy Global Specialty Engineered Materials 2006 2011 2006 2011 2006 2011 Page 71 $12 $29 Operating Income ($ in millions) • Provided access to new customers in specialized, high-growth markets such as healthcare and consumer • Strategic partner to many of the world’s best-known companies GLS Integration Success 16.9% 8.2% 2007 2011 2007 2011 Working Capital % of Sales • Complementary global footprint provided additional cross-selling opportunities • Opportunity to expand margins and drive working capital improvement while remaining customer-focused Page 72 $1.3 $27.6 2006 2011 Healthcare Revenue • Investment in dedicated healthcare team to drive penetration and growth • Leverage product portfolio globally & win specialty business Areas of Focus Global Specialty Engineered Materials $10.5 $117.9 2006 2011 Consumer Revenue 2006 2011globally & win specialty business in targeted markets • Aggressively commercialize specialty innovation platforms • Utilize our innovation centers to influence OEM design (Revenue in $ millions) Page 73 • Carbon Nanotube Formulations � Applications: Semiconductor equipment, hard drives � Customer benefits: Scrap cost reduction and clean conductivity • Thermally Conductive Solutions Applications: Sockets and bulb holders for LED lighting Key Innovations Global Specialty Engineered Materials � Applications: Sockets and bulb holders for LED lighting � Customer benefits: Cost reduction, energy saving, and design flexibility • FDA-Regulated TPEs � Applications: Food packaging seals, intravenous delivery systems, medical stoppers, prefilled syringes � Customer benefits: Clean and safe elastomers for highly regulated applications Page 74 Critical Imperatives and 2015 Goal Global Specialty Engineered Materials Critical Imperatives • Commercialize critical new technology platforms • Manage the mix as we continue to drive the transformation • Global translation of commercial successes 2015 Goal • 12 - 16% return on sales Page 75 Page 76

If already degraded, a complete cleanout may be needed.

REGULATORY SUPPORT • Drug delivery devices • Pharmaceutical packaging • Medical equipment KEY CHARACTERISTICS • Manufactured at four ISO 13485 certified sites, providing global consistency and increased security of supply • Documented change control beyond CAS number level, reducing the risk of change • Allows crystallization in semi-crystalline polymers to begin faster and complete earlier REGULATORY SUPPORT • Raw materials tested to: - ISO 10993-1 and USP biological evaluation - European Pharmacopeia 3.1.3/3.1.5 (polyolefin) - USP (polyethylene) - ICH Q3D elemental impurities • Registered Drug Master File (Type III) and/or Device Master File • Food contact established with FDA/EU* APPLICATION BULLETIN * FDA/EU compliance information available upon request Healthcare use limitations apply—see below.

Avient offers complete and flexible solutions to fulfill technical requirements and local standards.

No. 0514.02) Revised 09/21/2021 Page 1 of 2 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 POLYMER DIAGNOSTICS INC. 33587 Walker Road Avon Lake, OH 44012 Ana De La Ree Phone: 440-930-3271 CHEMICAL Valid To: December 31, 2021 Certificate Number: 0514.02 In recognition of the successful completion of the A2LA evaluation process, accreditation is granted to this laboratory to perform the following rubber and plastics tests: Test Description: Test Method or Standard: Analysis of Volatile Contaminants from Polymers (Chromatography) VDA 277 FTIR (Fourier Transform Infrared) Spectroscopy ASTM E1252 (Except 7.6, 11.2, and 11.4) Flammability Horizontal Burn of Self-Supporting Plastics ASTM D635; UL 94; IEC 60695-11-10 Horizontal Burn of Materials Used in Occupant Compartments of Motor Vehicles ASTM D5132; FMVSS 302 (49 CFR 571.302); ISO 3785 Vertical Burn, 20 mm ASTM D3801; UL 94; IEC 60695-11-10 Vertical Burn, 125 mm ASTM D5048; UL 94; IEC 60695-11-20 Oxygen Index ASTM D2863 FT1 Flame Test UL1581, Clause 1060; UL2556/CSA C22.2 No 2556, Clause 9.3 Cable Flame Test UL1581, Clause 1061 VW1 Flame Test UL1581, Clause 1080; UL2556/CSA C22.2 No 2556, Clause 9.4 FT2/FH Flame Test UL1581, Clause 1100; UL2556/CSA C22.2 No 2556, Clause 9.1 FV-1 Flame Test UL1581, Clause 1060; UL2556/CSA C22.2 No 2556, Clause 9.5 Thin Material Burning Test UL-94 Glow Wire Test IEC 60695 2-10, 2-11, 2-12, 2-13 RVCM in PVC ASTM D4443 (A2LA Cert.

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. These investments also consider our global footprint, and we are positioned very well and strategically from a regional perspective. 8 Growth Drivers 2020 Revenue ($ Millions) Long-Term Growth Rate Sustainable Solutions $ 560 8–12% Healthcare 555 8–10% Composites / 5G 212 10% Growth in Emerging Regions 672 5% Other (GDP growth) 1,784 2–3% Pro Forma Avient $ 3,783 6.5% 2 0 2 0 P E R F O R M A N C E 2020 HIGHLIGHTS 10 • 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 11 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. 25 1.