Q 2 2021 P E RFO R MA N CE U P DAT E $69 $122 $0.42 $0.87 Q2 2021 – ORGANIC PERFORMANCE 10 Sales Adjusted Operating Income $870 $1,235 + 42% + 77% + 107% (1) (1) (1) Q2 2021 SEGMENT PERFORMANCE 11 CAI $488 $624 ($ in millions) SEM Distribution $54 $86 +28% +59% $239 $404 $15 $24 +69% +60% $159 $241 $17 $37 +52% +118% SPECIALTY EBITDA MARGIN EXPANSION 12 CAI (1) 2018-2020 financial information is pro forma to include a full year of Clariant Masterbatch business acquisition 15.3% 15.2% 16.2% 18.5% 2018 2019 2020 YTD 2021 14.8% 15.2% 17.6% 19.1% 2018 2019 2020 YTD 2021 SEM • Continued portfolio transformation to high-growth end markets and sustainable solutions • Clariant Masterbatch synergy realization • Investments in composites and outdoor high performance applications drive growth and mix improvements CAI EBITDA MARGIN EXPANSION 13 Legacy CAI 18.9% 18.9% 20.3% 2019 2020 YTD 2021 Legacy 11.9% 13.8% 16.8% 2019 2020 YTD 2021 • Synergy capture translating to the bottom line • Positive mix with growth in healthcare, consumer and packaging end-markets • World-class vitality index of 35% represents sales from products introduced in the last five years. ColorWorks innovation centers are specially designed to foster imagination and enable creative exploration of innovative solutions • Focus on customers’ sustainability initiatives through recyclability and post-consumer recycled materials for packaging applications • Supports 8-12% long-term revenue growth expectations across our sustainable solutions portfolio 14 2020 Pro forma $870 $69 Sustainable Solutions 66 37% 26 Healthcare 29 20% 7 Composites 12 36% 6 Growth in Asia / LATAM 47 39% 11 Other 190 48% 22 Sub-total $1,214 40% $141 COVID Response Applications (15) (8) FX Impact 36 4 Synergies 11 Incentives, Travel, Other Employee Costs (26) 2021 Actual $1,235 42% $122 Q2 2021 ORGANIC SALES AND OPERATING INCOME 15 (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition Sales Growth Rate Operating Income$ millions 16 Q2 2020PF Q2 2021 (2) Financial information is presented on a constant currency basis (1,2) (44% of total revenue) (56% of total revenue) Q2 END MARKET SALES PERFORMANCE +26% +38% +46% +103% +51% +9% +7% +67% Energy Telecom Building & Transportation Industrial Healthcare Packaging Consumer Q2 YEAR-OVER-YEAR EBITDA BRIDGE Q2 2020 Pro forma $ 106 Demand 69 17 EBITDA$ millions • Demand impact driven by growth in sustainable solutions and consumer products • Price increases more than offset raw material and supply chain impacts (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition CAI: Price / Mix 40 Inflation (32) SEM: Price / Mix 23 Inflation (18) Distribution: Price / Mix 81 Inflation (77) Net Price Benefit 17 Supply Chain Disruptions (14) COVID Response Applications (8) Synergies 11 Incentives, Travel, FX, Other (22) Q2 2021 Actual $ 159 Q1 2021 Actual $ 161 CAI: Price / Mix 32 Inflation (22) SEM: Price / Mix 15 Inflation (9) Distribution: Price / Mix 50 Inflation (48) Net Price Benefit 18 Supply Chain Disruptions (12) Demand / Seasonality (6) Other (2) Q2 2021 Actual $ 15918 EBITDA$ millions • Price increases more than offset raw material and freight inflation impacts • Demand impact driven by Q2 seasonality for the business Q1 TO Q2 SEQUENTIAL EBITDA BRIDGE Q 3 AN D FU LL Y EA R 2021 O U TLO O K $74 $98 $0.46 $0.68 ORGANIC GROWTH PROJECTIONS – Q3 20 Sales Adjusted Operating Income $925 $1,150 + 24% + 32% + 48% FULL YEAR GUIDANCE INCREASED 21 Sales Adj.

KEY PROPERTIES AND PERFORMANCE FR GRADES H GRADES PEEK GRADES LCP GRADES FLEX GRADES PROPERTIES CONDITION ISO UNIT PPE400FR PPE700FR PPE950FR PPE1200FR H1500HF H2300HF PEEK700 PEEK900 PEEK1000 PEEK1200 LCP650 LCP800 LCP950 FLX400 FLX700 FLX1100 Dielectric Constant (Dk) 2.4 GHz 4.0 7.0 9.5 12.0 15.0 23.0 7.0 9.0 10.0 12.0 6.5 8.0 9.5 4.0 7.0 11.0 Loss Tangent (Df) 2.4 GHz 0.0030 0.0039 0.0042 0.0045 0.0010 0.0037 0.0024 0.0025 0.0024 0.0027 0.0043 0.0045 0.0047 0.0010 0.0009 0.0012 Density 1183 g/cm3 1.44 1.97 2.20 2.50 2.60 3.40 1.94 2.20 2.30 2.40 2.00 2.15 2.30 1.52 1.93 2.50 Melt Flow Index (MFI) 5 kg, 300 °C (unless noted) 1113 g/10 min 17 12 13 5 5 8 15 @ 380 °C 13 @ 380 °C 10 @ 380 °C 6 - - - 11 @ 230 °C 2 @ 230 °C 0.3 @ 230 °C Tensile Strength at Break 23 °C/73 °F 527 MPa 47 52 44 45 23 40 64 62 65 67 75 80 75 11 17 25 Flexural Modulus 23 °C/73 °F 178 MPa 3100 4500 - 9300 2100 5000 6200 7600 9200 11000 8000 8500 8500 1400 1600 2900 Unnotched Izod 23 °C/73 °F 180 kJ/m2 NB 42 20 9 17 10 28 25 18 15 31 20 12 NB NB NB -20 °C/-4 °F 180 kJ/m2 - - - - 17 10 - - - - - - - - - Notched Izod 23 °C/73 °F 180 kJ/m2 14 6 4 3 5 4 6 4 4 4 10 6 4 59 23 13 -20 °C/-4 °F 180 kJ/m2 - - - - 5 4 - - - - - - - - - - STANDARD GRADES RADOME GRADES PROPERTIES CONDITION ISO UNIT PPE260 PPE300 PPE320 PPE350 PPE400 PPE440 PPE500 PPE650 PPE800 PPE950 PPE1200 RS260 RB260 RS265FR Dielectric Constant (Dk) 2.4 GHz 2.6 3.0 3.2 3.5 4.0 4.4 5.0 6.5 8.0 9.5 12.0 2.6 2.6 2.7 Loss Tangent (Df) 2.4 GHz 0.0009 0.0009 0.0010 0.0009 0.0009 0.0009 0.0009 0.0009 0.0009 0.0009 0.0010 0.0009 0.0012 0.0032 Density 1183 g/cm3 1.07 1.18 1.21 1.27 1.43 1.50 1.62 1.86 2.10 2.20 2.40 1.06 1.08 1.09 Melt Flow Index (MFI) 5 kg, 300 °C 1113 g/10 min 15 15 16 14 14 14 15 11 10 4 2 21 16 25 Tensile Strength at Break 23 °C/73 °F 527 MPa 40 45 47 50 50 48 45 43 37 37 36 50 42 52 Flexural Modulus 23 °C/73 °F 178 MPa 2700 2400 2000 2600 2800 2700 2600 2600 2300 2600 2600 2200 2200 2600 Unnotched Izod 23 °C/73 °F 180 kJ/m2 NB NB NB NB NB NB NB NB 50 28 24 NB NB NB -20 °C/-4 °F 180 kJ/m2 NB NB NB NB NB NB NB 50 47 27 25 NB NB NB Notched Izod 23 °C/73 °F 180 kJ/m2 8 55 69 35 22 20 15 9 8 5 4 19 14 11 -20 °C/-4 °F 180 kJ/m2 8 15 20 14 12 10 9 8 8 5 4 10 12 10 PREPERM™ SERIES PROPERTIES CONDITION ISO UNIT 8027 8025 8037 8019 8028 8026 8044 8029 8041 8045 8048 8036 8056 8031 Dielectric Constant (Dk) 1 GHz, 23 °C 3.0 3.1 3.4 3.6 3.8 4.4 4.8 5.3 5.4 5.9 6.0 7.0 7.3 9.0 Loss Tangent (Df) 1 GHz, 23 °C 0.0012 0.0012 0.0008 0.0010 0.0010 0.0010 0.0004 0.0008 0.0006 0.0002 0.0006 0.0007 0.0002 0.0007 Density 1183 g/cm3 1.25 1.26 1.35 1.39 1.45 1.59 1.72 1.75 1.79 1.89 1.88 2.06 2.086 2.25 Melt Flow Index (MFI) 5 kg, 300 °C 1113 g/10 min 16 19 10 11 15 13 10 10 15 15 19 10 18 4.7 Tensile Strength at Break 23 °C/73 °F 527 MPa 59 54 54 62 59 54 52 58 52 45 49 45 37 38 Flexural Modulus 23 °C/73 °F 178 MPa 2780 2560 2850 3060 3350 3700 3157 4300 4320 3137 4150 3370 2560 4200 Notched Izod 23 °C/73 °F 180 kJ/m2 15.3 14 14.8 14 12.6 10.4 9.9 8.6 7.4 7.9 6.6 7.1 6.2 6.8 EDGETEK™ 7600 SERIES Copyright © 2021, Avient Corporation.

KEY PERFORMANCE ADVANTAGES Southern Yellow Pine1 Equivalent Wood Pole GridCore FRP Pole2 14 in x .750 in Length (ft) Load Class3 Allowable Class Load4 (kip) Weight (lb) Deflection5 (in) Weight (lb) Deflection5 (in) 40 3 1.95 1360 35 1040 12 2 2.41 1580 32 14 1 2.93 1810 30 18 H1 3.51 2050 28 21 H2 4.16 2310 26 25 45 3 1.95 1630 45 1170 17 2 2.41 1880 41 21 1 2.93 2160 38 26 H1 3.51 2450 36 31 H2 4.16 2760 33 37 50 3 1.95 1910 56 1300 24 2 2.41 2210 52 30 1 2.93 2530 48 36 H1 3.51 2880 45 44 H2 4.16 3240 42 52 55 3 1.95 2210 68 1430 33 2 2.41 2550 63 40 1 2.93 2930 58 49 H1 3.51 3320 54 59 H2 4.16 3740 51 70 60 3 1.95 2520 82 1560 43 2 2.41 2910 76 53 1 2.93 3340 70 65 H1 3.51 3790 65 78 H2 4.16 4270 61 92 65 3 1.95 2840 97 1690 56 2 2.41 3290 90 69 1 2.93 3770 83 84 H1 3.51 4280 77 100 H2 4.16 4820 72 119 70 3 1.95 3180 114 1820 71 2 2.41 3690 105 87 1 2.93 4220 97 106 H1 3.51 4790 90 127 H2 4.16 5390 85 150 POLE SELECTION GUIDE 1 Wood properties data are per ANSI O5.1-2022 Table 1.

Telephone:+33 474 42 69 70 Fax:+33 474 42 62 79

No. 69, Sec. 1, Yonghe Rd.

TYPICAL PROPERTIES - MULTI-AXIAL LAMINATES 0° Testing Orientation 90° Testing Orientation Product Name Resin Fiber Content Laminate Layers & Orientation Areal Weight Nominal Thickness1 Flexural Modulus Flexural Strength Tensile Modulus Tensile Strength Flexural Modulus Flexural Strength Tensile Modulus Tensile Strength wt % lb/ft2 oz/yd2 gsm in mm ksi GPa ksi MPa ksi GPa ksi MPa ksi GPa ksi MPa ksi GPa ksi MPa 6337 PP 63 0/90 0.20 29.49 1000 0.031 0.79 - - - - 2020 13.9 59.7 412 - - - - 2020 13.9 59.7 412 0/90/0 0.31 44.24 1500 0.045 1.14 2250 15.5 46.4 320 3070 21.2 79.4 547 186 1.3 9.7 67 1330 9.2 39.6 273 0/90/90/0 0.41 58.98 2000 0.057 1.45 2000 13.8 44.0 303 2400 16.5 60.6 418 496 3.4 20.7 143 2210 15.2 56.4 389 6531 65 0/90 0.10 14.80 502 0.014 0.36 - - - - 2240 15.4 60.9 420 - - - - 2240 15.4 60.9 420 0/90/0 0.15 22.20 753 0.020 0.50 2650 18.3 58.3 402 3100 21.4 82.8 571 280 1.9 NB2 NB2 1670 11.5 42.5 293 0/90/90/0 0.21 29.61 1004 0.027 0.68 2260 15.6 51.5 355 2470 17.0 62.2 429 580 4.0 30.4 210 2310 15.9 59.6 411 6536 0/90 0.14 20.71 702 0.021 0.53 - - - - 1980 13.7 60.5 417 - - - - 1980 13.7 60.5 417 0/90/0 0.22 31.06 1053 0.029 0.74 2309 15.9 48.3 333 2730 18.8 81.5 562 245 1.7 13.0 90 1490 10.3 44.3 305 0/90/90/0 0.29 41.41 1404 0.037 0.94 2164 14.9 47 324 2170 15.0 59.6 411 512 3.5 25.4 175 2340 16.1 71.2 491 6538 0/90 0.27 39.54 1341 0.034 0.86 - - - - 2220 15.3 60.0 414 - - - - 2220 15.3 60.0 414 0/90/0 0.41 59.53 2018 0.057 1.44 2825 19.5 40.9 282 2780 19.2 67.6 466 218 1.5 10.2 70 1410 9.7 40.0 276 0/90/90/0 0.55 79.37 2691 0.073 1.85 1880 13.0 32.4 223 2060 14.2 54.0 372 478 3.3 18.0 124 2360 16.3 61.0 421 7034B PP-Black 70 0/90 0.14 20.48 694 0.016 0.40 - - - - 2680 18.5 62.0 427 - - - - 2680 18.5 62.0 427 0/90/0 0.21 30.72 1041 0.028 0.71 1750 12.1 55.9 385 3710 25.6 75.1 518 160 1.1 11.3 78 1440 9.9 36.2 250 0/90/90/0 0.28 40.95 1388 0.036 0.90 1700 11.7 40.4 279 2800 19.3 55.7 384 432 3.0 25.4 175 2350 16.2 52.4 361 6020 PE 60 0/90 0.17 23.90 810 0.023 0.57 - - - - 1830 12.6 52.00 359 - - - - 1830 12.6 52.0 359 0/90/0 0.25 35.86 1216 0.033 0.84 2265 15.6 40.0 276 2740 18.9 68.2 470 181 1.2 10.0 69 1350 9.3 35.3 243 0/90/90/0 0.33 47.81 1621 0.044 1.12 1810 12.5 30.0 207 2000 13.8 48.0 331 502 3.5 22.0 152 1820 12.5 46.0 317 6621 66 0/90 0.19 27.94 947 0.025 0.65 - - - - 2280 15.7 60.0 414 - - - - 2280 15.7 60.0 414 0/90/0 0.29 41.90 1421 0.040 1.01 2490 17.2 37.0 255 2900 20.0 70.0 483 165 1.1 9.7 67 1440 9.9 38.0 262 0/90/90/0 0.39 55.87 1894 0.053 1.35 1810 12.5 29.0 200 2160 14.9 58.0 400 508 3.5 21.0 145 2170 15.0 53.0 365 5843 PETG 58 0/90 0.16 23.70 804 0.020 0.50 - - - - 2050 14.1 59.6 411 - - - - 2050 14.1 59.6 411 0/90/0 0.25 35.55 1205 0.030 0.76 2800 19.3 89.0 614 2900 20.0 78.0 538 397 2.7 NB2 NB2 1580 10.9 42.5 293 0/90/90/0 0.33 47.40 1607 0.039 0.99 2540 17.5 72.0 496 2300 15.9 57.7 398 780 5.4 35.0 241 2170 15.0 63.0 434 5840B aPET-Black 58 0/90 0.18 26.01 882 0.021 0.53 - - - - 2530 17.4 55.3 381 - - - - 2530 17.4 55.3 381 0/90/0 0.27 39.01 1323 0.032 0.82 2986 20.6 91.1 628 3160 21.8 68.7 474 252 1.7 20.0 138 1580 10.9 36.9 254 0/90/90/0 0.36 52.01 1763 0.042 1.07 3065 21.1 73.1 504 2570 17.7 54.2 374 813 5.6 37.0 255 2440 16.8 55.6 383 5860B PA6-Black 58 0/90 0.16 22.95 778 0.021 0.52 - - - - 2190 15.1 56.00 386 - - - - 2190 15.1 56.0 386 0/90/0 0.24 34.43 1167 0.034 0.86 2510 17.3 117.0 807 2760 19.0 63.7 439 657 4.5 22.2 153 1630 11.2 39.7 274 0/90/90/0 0.32 45.91 1556 0.046 1.18 2210 15.2 106.0 731 2090 14.4 45.6 314 1110 7.7 50.8 350 2150 14.8 57.4 396 1 Nominal thicknesses indicated are baseline values that may vary depending on material processing and other variables.

Sustainability Report | 2019 69 https://www.avient.com/sites/default/files/2020-09/aepw-progress-report-avient.pdf Clean-Up and Remediation If soil and groundwater contamination occurs at active or former Avient sites, proper remediation measures are reviewed based on current legal and technical standards and undertaken as necessary. A majority of our associates have full time contracts. 102–9 Supply chain Products—Management Approach: Supplier Collaboration PolyOne 2019 Annual Report—Form 10-K Page 3 102–10 Significant changes to the organization and its supply chain About Avient—Better Together: PolyOne and Clariant Masterbatch PolyOne 2019 Annual Report—Form 10-K Pages 2 & 16–17 102–11 Precautionary Principle or approach About Avient—Avient’s 4 Ps of Sustainability PolyOne 2019 Annual Report—Form 10-K Pages 6–10 102–12 External initiatives About Avient—Who We Are People—Security, A Great Place to Work Products—Management Approach: Product Stewardship, Strategic Partnerships and Alliances Planet—Eliminating Plastic Waste, Community Service, Community Engagement Sustainability Report | 2019 90 GRI Standards Content Index Organizational Profile 102–13 Membership of associations American Chemistry Council Plastics Industry Association Alliance To End Plastic Waste Operation Clean Sweep The UK Plastics Pact PetCore Europe Association of Plastic Recyclers Strategy 102–14 Statement from senior decision-maker Message from the CEO PolyOne 2019 Annual Report—Letter To Our Shareholders 102–15 Key impacts, risks, and opportunities Products—Innovation: The Lifeblood of a Specialty Organization Performance—Enterprise Risk Management (ERM) PolyOne 2019 Annual Report—Form 10-K Pages 6–10 Ethics & Integrity 102–16 Values, principles, standards, and norms of behavior About Avient—Who We Are Performance—The Highest Ethical Standards PolyOne 2019 Annual Report—Creating a World-Class, Sustainable Organization 102–17 Mechanisms for advice and concerns about ethics Performance—Ethics Hotline and Reporting Governance 102–18 Governance structure Performance—Board of Directors People—Management Approach EH&S PolyOne 2019 Proxy Statement Pages 33–39 102–20 Executive-level responsibility for economic, environmental, and social topics Message from the Governance and Corporate Responsibility Committee Performance—Board of Directors People—Management Approach EH&S PolyOne 2019 Annual Report—Form 10-K Pages 11–13 & 69 PolyOne 2019 Proxy Statement Page 34 Sustainability Report | 2019 91 Governance 102–22 Composition of the highest governance body and its committees Message from the Governance and Corporate Responsibility Committee Performance—Board of Directors PolyOne 2019 Annual Report—Form 10-K Pages 11–13 & 69 PolyOne 2019 Proxy Statement Pages 33–39 102–23 Chair of the highest governance body Message from the Governance and Corporate Responsibility Committee Performance—Board of Directors PolyOne 2019 Annual Report—Form 10-K Pages 11–13 & 69 PolyOne 2019 Proxy Statement Pages 33–34 102–24 Nominating and selecting the highest governance body Performance—Board of Directors PolyOne 2019 Annual Report—Form 10-K Pages 11–13 & 69 PolyOne 2019 Proxy Statement Pages 37–38 102–25 Conflicts of interest Performance—Board of Directors Code of Conduct 102–26 Role of highest governance body in setting purpose, values, and strategy Performance—Board of Directors PolyOne 2019 Annual Report—Form 10-K Pages 11–13 & 69 PolyOne 2019 Proxy Statement Pages33–39 102–27 Collective knowledge of highest governance body Performance—Board of Directors PolyOne 2019 Annual Report—Form 10-K Pages 11–13 & 69 PolyOne 2019 Proxy Statement Pages 12–15 102–28 Evaluating the highest governance body's performance Performance—Board of Directors PolyOne 2019 Proxy Statement Pages 38–39 102–29 Identifying and managing economic, environmental, and social impacts Performance—Board of Directors People—Management Approach EH&S GRI Standards Content Index Sustainability Report | 2019 92 GRI Standards Content Index Governance 102–30 Effectiveness of risk management processes Performance—Board of Directors, Enterprise Risk Management PolyOne 2019 Proxy Statement Page 34 102–31 Review of economic, environmental, and social topics Performance—Board of Directors, Enterprise Risk Management PolyOne 2019 Annual Report—Form 10-K Pages 11–13 & 69 PolyOne 2019 Proxy Statement Pages 33–39 102–32 Highest governance body's role in sustainability reporting Message from the Governance and Corporate Responsibility Committee Performance—Board of Directors PolyOne 2019 Annual Report—Form 10-K Pages 11–13 & 69 PolyOne 2019 Proxy Statement Pages 33–39 102–33 Communicating critical concerns Performance—Board of Directors PolyOne 2019 Annual Report—Form 10-K Pages 11–13 & 69 PolyOne 2019 Proxy Statement Page 35 Code of Conduct 102–34 Nature and total number of critical concerns PolyOne 2019 Annual Report—Form 10-K Pages 56–57 102–35 Renumeration Policies PolyOne Notice of 2019 Annual Meeting of Shareholders PolyOne 2019 Proxy Statement Pages 44–56 102–36 Process for determining renumeration PolyOne 2019 Proxy Statement Pages 44–56 102–37 Stakeholders' involvement in renumeration PolyOne 2019 Proxy Statement Page 46 102–38 Annual total compensation ratio PolyOne 2019 Proxy Statement Page 69 Stakeholder Engagement 102–40 List of stakeholder groups Throughout Avient 2019 Sustainability Report 102–41 Collective bargaining agreements PolyOne 2019 Annual Report—Form 10-K Page 4 102–42 Identifying and selecting stakeholders Throughout Avient 2019 Sustainability Report 102–43 Approach to stakeholder engagement Throughout Avient 2019 Sustainability Report Sustainability Report | 2019 93 Stakeholder Engagement 102–44 Key topics and concerns raised About Avient—Communities Counting on Avient People—All Sections Products—Management Approach: Product Stewardship, Management Approach: Supplier Collaboration Planet—All Sections Reporting Practice 102–45 Entities included in the consolidated financial statements PolyOne 2019 Annual Report—Form 10-K Segments included: Color, Additives, and Inks, Specialty Engineered Materials, and Distribution 102–46 Defining report content and topic boundaries The information in this report applies to Avient and all owned facilities, joint ventures, and operating companies globally within the reporting period, unless otherwise stated. Challenge Accepted. 2019 Sustainability Report Table of Contents Message from the CEO Message from the Governance and Corporate Responsibility Committee Sustainability Goals About Avient Historic Transformation Inspired Future Better Together: PolyOne and Clariant Masterbatch Who We Are What We Do: Material Science Revenue by Geography and End Market Where We Are: Global Locations Communities Counting on Avient Message from Avient’s VP of Sustainability Avient’s 4 Ps of Sustainability People Management Approach: EH&S Safety First Continuous Improvement Occupational Safety & Health Performance: Metrics and Monitoring Security Management Approach: Training and Development Career Training and Performance Feedback Operational and Commercial Excellence Training Leadership Development Programs Manager Training and Front-Line Engagement Talent Acquisition and Campus Recruiting Management Approach: Diversity & Inclusion Leading Change from the Top Workforce Demographics Associate Benefits Awards & Recognition Programs Health and Wellness A Great Place to Work Products Innovation: The Lifeblood of a Specialty Organization No Surprises PledgeSM How Our Products Enable Sustainability Our Solutions…In Action Management Approach: Product Stewardship Global Chemical Management Product Excellence Management Approach: Supplier Evaluation Strategic Partnerships and Alliances Planet Protecting Our Planet Energy, Greenhouse Gas (GHG) Emissions and Climate Change Eliminating Plastic Waste Earth Day Photo Contest Community Service Community Engagement Performance Performance Overview Sustainable Products Performance The Highest Ethical Standards Ethics Hotline and Reporting Enterprise Risk Management (ERM) Board of Directors Governance Policies & Guidelines Goals Sustainability Goals People and Planet Data and Metrics Indices GRI/SASB/TCFD Content Index Reconciliation of Non-GAAP Financial Measures forward arrow FC: Back Arrow Button 2: Page 2: Page 3: Page 4: Page 5: Page 6: Page 7: Page 8: Page 9: Page 10: Page 11: Page 12: Page 13: Page 14: Page 15: Page 16: Page 17: Page 18: Page 19: Page 20: Page 21: Page 22: Page 23: Page 24: Page 25: Page 26: Page 27: Page 28: Page 29: Page 30: Page 31: Page 32: Page 33: Page 34: Page 35: Page 36: Page 37: Page 38: Page 39: Page 40: Page 41: Page 42: Page 43: Page 44: Page 45: Page 46: Page 47: Page 48: Page 49: Page 50: Page 51: Page 52: Page 53: Page 54: Page 55: Page 56: Page 57: Page 58: Page 59: Page 60: Page 61: Page 62: Page 63: Page 64: Page 65: Page 66: Page 67: Page 68: Page 69: Page 70: Page 71: Page 72: Page 73: Page 74: Page 75: Page 76: Page 77: Page 78: Page 79: Page 80: Page 81: Page 82: Page 83: Page 84: Page 85: Page 86: Page 87: Page 88: Page 89: Page 90: Page 91: Page 92: Page 93: Page 94: Page 95: Page 96: Page 97: Page 98: Page 99: Page 100: Page 101: Page 102: Page 103: Page 104: Page 105: Page 106: Page 107: Page 108: Page 109: Page 110: forward arrow button 2: Page 2: Page 3: Page 4: Page 5: Page 6: Page 7: Page 8: Page 9: Page 10: Page 11: Page 12: Page 13: Page 14: Page 15: Page 16: Page 17: Page 18: Page 19: Page 20: Page 21: Page 22: Page 23: Page 24: Page 25: Page 26: Page 27: Page 28: Page 29: Page 30: Page 31: Page 32: Page 33: Page 34: Page 35: Page 36: Page 37: Page 38: Page 39: Page 40: Page 41: Page 42: Page 43: Page 44: Page 45: Page 46: Page 47: Page 48: Page 49: Page 50: Page 51: Page 52: Page 53: Page 54: Page 55: Page 56: Page 57: Page 58: Page 59: Page 60: Page 61: Page 62: Page 63: Page 64: Page 65: Page 66: Page 67: Page 68: Page 69: Page 70: Page 71: Page 72: Page 73: Page 74: Page 75: Page 76: Page 77: Page 78: Page 79: Page 80: Page 81: Page 82: Page 83: Page 84: Page 85: Page 86: Page 87: Page 88: Page 89: Page 90: Page 91: Page 92: Page 93: Page 94: Page 95: Page 96: Page 97: Page 98: Page 99: Page 100: Page 101: Page 102: Page 103: Page 104: Page 105: Page 106: Page 107: Page 108: Page 109: Page 110: Back Arrow Button 4:

Sustainability Report | 2019 69 https://www.avient.com/sites/default/files/2020-09/aepw-progress-report-avient.pdf Clean-Up and Remediation If soil and groundwater contamination occurs at active or former Avient sites, proper remediation measures are reviewed based on current legal and technical standards and undertaken as necessary. A majority of our associates have full time contracts. 102–9 Supply chain Products—Management Approach: Supplier Collaboration PolyOne 2019 Annual Report—Form 10-K Page 3 102–10 Significant changes to the organization and its supply chain About Avient—Better Together: PolyOne and Clariant Masterbatch PolyOne 2019 Annual Report—Form 10-K Pages 2 & 16–17 102–11 Precautionary Principle or approach About Avient—Avient’s 4 Ps of Sustainability PolyOne 2019 Annual Report—Form 10-K Pages 6–10 102–12 External initiatives About Avient—Who We Are People—Security, A Great Place to Work Products—Management Approach: Product Stewardship, Strategic Partnerships and Alliances Planet—Eliminating Plastic Waste, Community Service, Community Engagement Sustainability Report | 2019 90 GRI Standards Content Index Organizational Profile 102–13 Membership of associations American Chemistry Council Plastics Industry Association Alliance To End Plastic Waste Operation Clean Sweep The UK Plastics Pact PetCore Europe Association of Plastic Recyclers Strategy 102–14 Statement from senior decision-maker Message from the CEO PolyOne 2019 Annual Report—Letter To Our Shareholders 102–15 Key impacts, risks, and opportunities Products—Innovation: The Lifeblood of a Specialty Organization Performance—Enterprise Risk Management (ERM) PolyOne 2019 Annual Report—Form 10-K Pages 6–10 Ethics & Integrity 102–16 Values, principles, standards, and norms of behavior About Avient—Who We Are Performance—The Highest Ethical Standards PolyOne 2019 Annual Report—Creating a World-Class, Sustainable Organization 102–17 Mechanisms for advice and concerns about ethics Performance—Ethics Hotline and Reporting Governance 102–18 Governance structure Performance—Board of Directors People—Management Approach EH&S PolyOne 2019 Proxy Statement Pages 33–39 102–20 Executive-level responsibility for economic, environmental, and social topics Message from the Governance and Corporate Responsibility Committee Performance—Board of Directors People—Management Approach EH&S PolyOne 2019 Annual Report—Form 10-K Pages 11–13 & 69 PolyOne 2019 Proxy Statement Page 34 Sustainability Report | 2019 91 Governance 102–22 Composition of the highest governance body and its committees Message from the Governance and Corporate Responsibility Committee Performance—Board of Directors PolyOne 2019 Annual Report—Form 10-K Pages 11–13 & 69 PolyOne 2019 Proxy Statement Pages 33–39 102–23 Chair of the highest governance body Message from the Governance and Corporate Responsibility Committee Performance—Board of Directors PolyOne 2019 Annual Report—Form 10-K Pages 11–13 & 69 PolyOne 2019 Proxy Statement Pages 33–34 102–24 Nominating and selecting the highest governance body Performance—Board of Directors PolyOne 2019 Annual Report—Form 10-K Pages 11–13 & 69 PolyOne 2019 Proxy Statement Pages 37–38 102–25 Conflicts of interest Performance—Board of Directors Code of Conduct 102–26 Role of highest governance body in setting purpose, values, and strategy Performance—Board of Directors PolyOne 2019 Annual Report—Form 10-K Pages 11–13 & 69 PolyOne 2019 Proxy Statement Pages33–39 102–27 Collective knowledge of highest governance body Performance—Board of Directors PolyOne 2019 Annual Report—Form 10-K Pages 11–13 & 69 PolyOne 2019 Proxy Statement Pages 12–15 102–28 Evaluating the highest governance body's performance Performance—Board of Directors PolyOne 2019 Proxy Statement Pages 38–39 102–29 Identifying and managing economic, environmental, and social impacts Performance—Board of Directors People—Management Approach EH&S GRI Standards Content Index Sustainability Report | 2019 92 GRI Standards Content Index Governance 102–30 Effectiveness of risk management processes Performance—Board of Directors, Enterprise Risk Management PolyOne 2019 Proxy Statement Page 34 102–31 Review of economic, environmental, and social topics Performance—Board of Directors, Enterprise Risk Management PolyOne 2019 Annual Report—Form 10-K Pages 11–13 & 69 PolyOne 2019 Proxy Statement Pages 33–39 102–32 Highest governance body's role in sustainability reporting Message from the Governance and Corporate Responsibility Committee Performance—Board of Directors PolyOne 2019 Annual Report—Form 10-K Pages 11–13 & 69 PolyOne 2019 Proxy Statement Pages 33–39 102–33 Communicating critical concerns Performance—Board of Directors PolyOne 2019 Annual Report—Form 10-K Pages 11–13 & 69 PolyOne 2019 Proxy Statement Page 35 Code of Conduct 102–34 Nature and total number of critical concerns PolyOne 2019 Annual Report—Form 10-K Pages 56–57 102–35 Renumeration Policies PolyOne Notice of 2019 Annual Meeting of Shareholders PolyOne 2019 Proxy Statement Pages 44–56 102–36 Process for determining renumeration PolyOne 2019 Proxy Statement Pages 44–56 102–37 Stakeholders' involvement in renumeration PolyOne 2019 Proxy Statement Page 46 102–38 Annual total compensation ratio PolyOne 2019 Proxy Statement Page 69 Stakeholder Engagement 102–40 List of stakeholder groups Throughout Avient 2019 Sustainability Report 102–41 Collective bargaining agreements PolyOne 2019 Annual Report—Form 10-K Page 4 102–42 Identifying and selecting stakeholders Throughout Avient 2019 Sustainability Report 102–43 Approach to stakeholder engagement Throughout Avient 2019 Sustainability Report Sustainability Report | 2019 93 Stakeholder Engagement 102–44 Key topics and concerns raised About Avient—Communities Counting on Avient People—All Sections Products—Management Approach: Product Stewardship, Management Approach: Supplier Collaboration Planet—All Sections Reporting Practice 102–45 Entities included in the consolidated financial statements PolyOne 2019 Annual Report—Form 10-K Segments included: Color, Additives, and Inks, Specialty Engineered Materials, and Distribution 102–46 Defining report content and topic boundaries The information in this report applies to Avient and all owned facilities, joint ventures, and operating companies globally within the reporting period, unless otherwise stated. Challenge Accepted. 2019 Sustainability Report Table of Contents Message from the CEO Message from the Governance and Corporate Responsibility Committee Sustainability Goals About Avient Historic Transformation Inspired Future Better Together: PolyOne and Clariant Masterbatch Who We Are What We Do: Material Science Revenue by Geography and End Market Where We Are: Global Locations Communities Counting on Avient Message from Avient’s VP of Sustainability Avient’s 4 Ps of Sustainability People Management Approach: EH&S Safety First Continuous Improvement Occupational Safety & Health Performance: Metrics and Monitoring Security Management Approach: Training and Development Career Training and Performance Feedback Operational and Commercial Excellence Training Leadership Development Programs Manager Training and Front-Line Engagement Talent Acquisition and Campus Recruiting Management Approach: Diversity & Inclusion Leading Change from the Top Workforce Demographics Associate Benefits Awards & Recognition Programs Health and Wellness A Great Place to Work Products Innovation: The Lifeblood of a Specialty Organization No Surprises PledgeSM How Our Products Enable Sustainability Our Solutions…In Action Management Approach: Product Stewardship Global Chemical Management Product Excellence Management Approach: Supplier Evaluation Strategic Partnerships and Alliances Planet Protecting Our Planet Energy, Greenhouse Gas (GHG) Emissions and Climate Change Eliminating Plastic Waste Earth Day Photo Contest Community Service Community Engagement Performance Performance Overview Sustainable Products Performance The Highest Ethical Standards Ethics Hotline and Reporting Enterprise Risk Management (ERM) Board of Directors Governance Policies & Guidelines Goals Sustainability Goals People and Planet Data and Metrics Indices GRI/SASB/TCFD Content Index Reconciliation of Non-GAAP Financial Measures forward arrow FC: Back Arrow Button 2: Page 2: Page 3: Page 4: Page 5: Page 6: Page 7: Page 8: Page 9: Page 10: Page 11: Page 12: Page 13: Page 14: Page 15: Page 16: Page 17: Page 18: Page 19: Page 20: Page 21: Page 22: Page 23: Page 24: Page 25: Page 26: Page 27: Page 28: Page 29: Page 30: Page 31: Page 32: Page 33: Page 34: Page 35: Page 36: Page 37: Page 38: Page 39: Page 40: Page 41: Page 42: Page 43: Page 44: Page 45: Page 46: Page 47: Page 48: Page 49: Page 50: Page 51: Page 52: Page 53: Page 54: Page 55: Page 56: Page 57: Page 58: Page 59: Page 60: Page 61: Page 62: Page 63: Page 64: Page 65: Page 66: Page 67: Page 68: Page 69: Page 70: Page 71: Page 72: Page 73: Page 74: Page 75: Page 76: Page 77: Page 78: Page 79: Page 80: Page 81: Page 82: Page 83: Page 84: Page 85: Page 86: Page 87: Page 88: Page 89: Page 90: Page 91: Page 92: Page 93: Page 94: Page 95: Page 96: Page 97: Page 98: Page 99: Page 100: Page 101: Page 102: Page 103: Page 104: Page 105: Page 106: Page 107: Page 108: Page 109: Page 110: forward arrow button 2: Page 2: Page 3: Page 4: Page 5: Page 6: Page 7: Page 8: Page 9: Page 10: Page 11: Page 12: Page 13: Page 14: Page 15: Page 16: Page 17: Page 18: Page 19: Page 20: Page 21: Page 22: Page 23: Page 24: Page 25: Page 26: Page 27: Page 28: Page 29: Page 30: Page 31: Page 32: Page 33: Page 34: Page 35: Page 36: Page 37: Page 38: Page 39: Page 40: Page 41: Page 42: Page 43: Page 44: Page 45: Page 46: Page 47: Page 48: Page 49: Page 50: Page 51: Page 52: Page 53: Page 54: Page 55: Page 56: Page 57: Page 58: Page 59: Page 60: Page 61: Page 62: Page 63: Page 64: Page 65: Page 66: Page 67: Page 68: Page 69: Page 70: Page 71: Page 72: Page 73: Page 74: Page 75: Page 76: Page 77: Page 78: Page 79: Page 80: Page 81: Page 82: Page 83: Page 84: Page 85: Page 86: Page 87: Page 88: Page 89: Page 90: Page 91: Page 92: Page 93: Page 94: Page 95: Page 96: Page 97: Page 98: Page 99: Page 100: Page 101: Page 102: Page 103: Page 104: Page 105: Page 106: Page 107: Page 108: Page 109: Page 110: Back Arrow Button 4:

This innovation drives performance and is reflective of consistent, strategic investments in our portfolio…and people. 2020 Pro forma $991 $86 Sustainable Solutions 15 11% 6 Healthcare 28 22% 6 Composites 6 10% 3 Growth in Emerging Regions 44 30% 10 Other 53 10% 7 Sub-total $1,137 15% $118 FX Impact 25 - 2 Synergies - - 11 Incentives, Travel, Other Employee Costs - - (8) 2021 Actual $1,162 17% $123 Q1 2021 ORGANIC SALES AND OPERATING INCOME 7 (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition Sales Growth Rate Operating Income$ millions 8 Wire & Cable Transportation Industrial Healthcare Packaging Consumer Q1 2020PF Q1 2021 (2) Financial information is presented on a constant currency basis (1,2) (42% of total revenue) (58% of total revenue) Q1 END MARKET SALES PERFORMANCE +17% +14% +8% +10% +8% +22% +5% +24% Q 2 AN D FU LL Y EA R 2021 O U TLO O K $69 $112 $0.42 $0.80 ORGANIC GROWTH PROJECTIONS – Q2 10 Sales Adjusted Operating Income $870 $1,100 + 26% + 62% + 90% (1) (1) (1) (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition FULL YEAR GUIDANCE INCREASED 11 Sales Adj. Free cash flow conversion calculated as (EBITDA – Capex) / EBITDA Median: 84% Median: 77% HIGH FREE CASH FLOW CONVERSION Avient reflects 2021 estimated EBITDA of $560M and excludes one-time synergy capture CAPEX ($20M) 87 89 87 86 82 81 76 88 87 84 82 81 78 77 77 77 76 73 70 69 50 19 Total Enterprise Value / 2021E EBITDA Our current valuation with updated guidance implies an EBITDA multiple that is below specialty formulator peers and the majority of our chemical peers.

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