We are better together through: Keeping Safety First — PolyOne and Clariant are both ACC Responsible Care® companies, and nothing is more important than the health, safety and well-being of our people. We are Avient. 4 BETTER TOGETHER: POLYONE AND CLARIANT MASTERBATCH Key Data 2020 PF Sales $3.7 billion 2020 PF EBITDA $440 million ($515M w/synergies) 2020E Free Cash Flow $270 million (1) Estimated Pro forma for the acquisition of the Clariant Masterbatch business 87% of EBITDA from specialty applications U.S. & Canada 49% 25% 17% Latin America SEGMENT, END MARKET AND GEOGRAPHY 5 GEOGRAPHY REVENUESEGMENT FINANCIALS 21%Industrial Building & Electrical & END MARKET REVENUE All data reflects 2020 estimate and Pro forma for acquisition of the Clariant Masterbatch business We estimate in excess of $50 million dollars of new application sales by 2025, exclusively generated from the joining of our portfolios and technology teams.

Data and information supporting the Scope 3 GHG emissions assertion were in many cases estimated rather than historical in nature. Page 3 WATER RESOURCES • ENVIRONMENTAL SERVICES • HEALTH & SAFETY • CLIMATE CHANGE Apex Companies, LLC • (800) 733-2739 • www.apexcos.com Statement of independence, impartiality and competence Apex is an independent professional services company that specializes in Health, Safety, Social and Environmental management services including assurance with over 30 years history in providing these services. The verification team has extensive experience in conducting assurance over environmental, social, ethical and health and safety information, systems and processes, has over 20 years combined experience in this field and an excellent understanding of Apex’s standard methodology for the verification of greenhouse gas emissions data.

Data and information supporting the Scope 3 GHG emissions assertion were in many cases estimated rather than historical in nature. Page 3 WATER RESOURCES • ENVIRONMENTAL SERVICES • INDUSTRIAL HYGIENE  •  SAFETY  •  SUSTAINABILITY  Apex Companies, LLC • (800) 733‐2739 • www.apexcos.com  Statement of independence, impartiality and competence Apex is an independent professional services company that specializes in Health, Safety, Social and Environmental management services including assurance with over 30 years history in providing these services. The verification team has extensive experience in conducting assurance over environmental, social, ethical and health and safety information, systems and processes, has over 20 years combined experience in this field and an excellent understanding of Apex’s standard methodology for the verification of greenhouse gas emissions data.

Strong balance sheet and free cash flow, as total cash and liquidity ended the year at $244 million and $574 million, respectively. The second independent source of data that we used to augment the peer proxy analysis was the Consultant’s analysis of competitive market data relating to other applicable general industries. The CEO makes his recommendations in conjunction with the marketplace data.

Our world-class safety. You can be certain that PolyOne meets or exceeds the material safety data reporting requirements of your country or region. According to The Center for Technology Innovation at Brookings, two-thirds of the world’s population could face water shortages by 2025.

The technology is highly suitable for printable sheet, where smooth surface finish and low density is a requirement. PRODUCTS APPLICATIONS DESCRIPTION/BENEFITS EXCELITE PF-1 PVC sheet for digital print or trimboard; Fine cell structure able to target low density: improves consistency and control over foaming process FOAM ADDITIVE-54 PVC sheet for digital print or trimboard; Finer cell structure than PF-1 promotes ultra smooth surface finish; improves consistency and control over foaming process PF-1E & FA-54E ADDITIVES PVC sheet for digital print or trimboard; Enhanced run time formulation reduces die lip build-up in PVC processes, leading to longer production run times FOAM ADDITIVE-33 CaZN formulations for PVC sheet, profile, or trimboard Promotes finer cell structure, higher cell density, and surface quality in CaZN PVC dryblends FOAM ADDITIVE-77 HDPE sheet & plastic lumber Industry-leading cell structure and cell density; achieves lower density without sacrificing quality; self-nucleating and able to increase extruder output rates up to 15% FOAM ADDITIVE-85 Endothermic foam or nucleating additive for olefin and styrene polymers; plastic lumber, sheet applications and food packaging products Can be used as a CFA or nucleating additive; nucleating capabilities promote fine cell structure and high cell density; achieves greater density reductions with more consistency and control FOAM ADDITIVE-37 HDPE sheet & plastic lumber Good cell structure and cell density in HDPE lumber; greater consistency and control over foaming process EXCELITE CAN IMPROVE PRODUCTION EFFICIENCY • The process operator has full control of density • Minimizes product rejection due to unnecessarily high/low density • Production should consistently target the bottom of the density specification • Enables control over the reintroduction of regrind or reprocessed materials as a feedstock • Enables the consistent foaming of products using higher percentages of regrind • Carrier selection can promote longer run times, enabling increased line productivity through less plate-out or material build-up on die lips EXCELITE CAN IMPROVE SURFACE FINISH Excelite additives creates a fine, consistent cell structure within the extruded polymer, which determine the surface roughness. EXCELITE VS POWDER • Enables a greater level of density control, through consistent distribution in the polymer • Simplifies and optimizes resin compounding capabilities (PVC dry blends) • Enables greater control over foaming and expands processing window when re-introducing regrind • Clean and highly accurate dosing process, with fewer of the health and safety concerns that can become apparent with powder CFAs EXCELITE VS PELLET • Being significantly more concentrated, Excelite additive enables lower total cost to foam • Can achieve lower density, less carrier influence • Finer and tighter cell structure through better additive distribution • Improved linear consistency of cell structure as ColorMatrix pumps continually meter output, giving greater stability over material dosing • Improved plant working capital as lower let down ratios means less material is consumed and reduces inventory holdings TECHNICAL SUPPORT • Avient has a market leading service team which understands foaming processes, we assist customers to deliver performance and production efficiencies with Excelite™ technology • Please contact your local Avient representative for additional information on our line of foaming additives www.avient.com Copyright © 2020, Avient Corporation.

You can be certain that Avient meets or exceeds the material safety data reporting requirements of your country or region. We maintain data related to the environmental, health and safety of our products in our product stewardship database. Through this data, we create safety data sheets, customer certification statements and product safety improvements.

You can be certain that Avient meets or exceeds the material safety data reporting requirements of your country or region. We maintain data related to the environmental, health and safety of our products in our product stewardship database. Through this data, we create safety data sheets, customer certification statements and product safety improvements.

Environmental, Health and Safety 4. MINE SAFETY DISCLOSURES Not applicable. Environmental, Health and Safety 4.

We are better together through: Keeping Safety First — PolyOne and Clariant are both ACC Responsible Care® companies, and nothing is more important than the health, safety and well-being of our people. We are Avient. 6 BETTER TOGETHER: POLYONE AND CLARIANT COLOR Key Financial Data (1) 2021E Sales $4.75 billion 2021E EBITDA $580 million 87% of EBITDA from specialty applications (1) As of October 28, 2021 webcast Synergies ($ millions) Three-Year Estimate Administrative $ 20 Sourcing 30 Operational 25 Total Synergies $ 75 CLARIANT COST SYNERGIES • On-track to realize $50 million of expected synergies in 2021 – up from earlier estimate of $35 million • Relentless focus on guiding principles for acquisition integration: safety first, employee collaboration and exceeding customer expectations • Future revenue synergies in excess of $50 million by 2025 are not part of these estimates and represent additional growth over the long term 8 • Barrier technology • Functional additives • Processing aids • Flame retardants • Light-weighting additives Complementary Technologies • Clariant’s approved formulations and certified facilities • Legacy PolyOne’s leading share in distribution channels Healthcare Solutions • Clariant’s position in SE Asia, Latin America, Germany & Italy • Legacy PolyOne’s position in U.S., Canada and China Regional Strengths • Solutions with Avient’s engineered materials customers • Avient’s distribution channels Segment Cross-selling COMPLEMENTARY TECHNOLOGIES AND CUSTOMERS DRIVE REVENUE SYNERGIES Revenue synergy opportunities in excess of $50M by 2025 The complementary aspects of our combined businesses are unquestionable. This innovation drives performance and is reflective of consistent, strategic investments in technology and people Clariant Color business acquired July 1, 2020 10 30 40 14 22 35 19 18 41 Current Additional share needed to reach 2025 target BRAND OWNERS COMMITTED TO INCREASING USE OF RECYCLED MATERIALS 14 Brand Owner 1 Brand Owner 3 Brand Owner 2 Brand Owner 7 Brand Owner 4 Brand Owner 10 Brand Owner 6 Brand Owner 11 Brand Owner 5 Brand Owner 8 Brand Owner 9 Brand Owner 12 Brand Owner 13 Percent recycled plastic used: (examples and not exhaustive) (1) Latest year reported.