Regular monitoring of our emissions to air from all of our sites is a part of environmental management at Avient. While conventional air emissions are a critical and a highly-influential topic in some industrial sectors, as a specialty formulator of purchased materials, Avient’s conventional air emission levels are de minimis and not material. Planet—Climate Change, Energy and Greenhouse Gas Emissions (GHG) Air Quality Air emissions of the following pollutants: (1) NOX (excluding N2O), (2) SOX, (3) volatile organic compounds (VOCs), and (4) hazardous air pollutants (HAPs) RT-CH-120a.1 1.

Monitoring EH&S metrics related to sustainability topics, including: greenhouse gas emissions, air quality, energy management, water management, hazardous waste management. Business travel Evaluation status Relevant, calculated Emissions in reporting year (metric tons CO2e) 1,681 Emissions calculation methodology Distance-based method Percentage of emissions calculated using data obtained from suppliers or value chain partners 100 Please explain Business travel data includes car and air travel, as well as hotel stays provided by our travel agency of choice. DEFRA version: 2021 v 1.0 DEFRA - Waste disposal - Refuse - Commercial and industrial waste - Combustion DEFRA - Waste disposal - Refuse - Commercial and industrial waste - Landfill DEFRA - Waste disposal - Refuse - Commercial and industrial waste - Closed-loop DEFRA – Business travel – air – Flights - Short-haul – Economy class DEFRA – Business travel – air – Flights - Short-haul – Business class DEFRA – Business travel – air – Flights - Long-haul – Economy class DEFRA – Business travel – air – Flights - Long-haul – Premium economy class DEFRA – Business travel – air – Flights - Long-haul – Business class DEFRA – Business travel – land – Cars (by size) – Average car – Petrol Truck freight: DEFRA - Freighting goods - HGV (all diesel) - All HGVs – Average laden Sea Freight: DEFRA - Freighting goods – Cargo ship – General cargo – Average Air Freight: DEFRA - Freighting goods – Freight flights – Domestic Air Freight: DEFRA - Freighting goods – Freight flights – Short-haul Air Freight: DEFRA - Freighting goods – Freight flights – Long-haul SC1.3 (SC1.3) What are the challenges in allocating emissions to different customers, and what would help you to overcome these challenges?

Avon Lake, OH 44012 Colors, Additives & Inks A leading provider of specialized custom color and additive concentrates in solid and liquid form for thermoplastics, dispersions for thermosets, as well as specialty inks, plastisol, and vinyl slush molding solutions.

Common resins include MDPE, HDPE, PVDF, PVC and Nylon.

Compatible with a broad range of materials, including:  •    Polypropylene •    Polyethylene •    Ionomer-based chemistries •    PVC •    Acrylics •    Engineered thermoplastics

PVC TONER PVC SLATE BLUE METALLIC UV

Learn how you can help reduce employee stress at the PVC pipe production job site by using liquid color and dosing equipment How using liquid colorant can give PVC pipe manufacturers greater control over their production environment

Learn how you can help reduce employee stress at the PVC pipe production job site by using liquid color and dosing equipment How using liquid colorant can give PVC pipe manufacturers greater control over their production environment

Purchase price multiple rapidly declining on strength of business and synergy capture 7 $133 $201 2019PF 2022E 7 Clariant Color EBITDA Growth Purchase Price Multiple 10.8x 7.0x 6.4x 2019PF 2021 2022E w/ Full Synergies 11.9% 16.3% 2019PF 2022E EBITDA Margins CLARIANT COLOR: TRANSFORMATIONAL ACQUISITION (1) Financial information is pro forma to include a full year of Clariant Color business SUNBELT PVC Resins DSS 20 Acquisitions $4.8B Investment $2.7B of Annual Revenue 5 Divestments $2.3B Proceeds TPE PP&S HISTORIC SPECIALIZATION THROUGH M&A 8 Distribution DSM Protective Materials BOLT-ON ACQUISITION HISTORY 9 Commercial Resources Operating Income Operating Margins 259 363 $40 $139 Established Acquisitions (> 7 years) + 40% + 248% + 1300 bps I N V E S T T O G R O W SPECIALTY TRANSFORMATION T O D A Y 46% 67% 86% 100% 0% 60% 80% 100% 2005 2010 2019 2021 2022 PF % o f A d ju st ed E B IT D A • Commodity JVs • Distribution • Performance Products & Solutions • Specialty Businesses (1) Adjusted EBITDA is EBITDA excluding corporate costs and special items (2) Pro forma for the acquisition of Dyneema® and divestiture of Distribution (1 ) (2) 10 Building & 43% 14% Telecom. 2% 2006 2022 Pro Forma 21% Building & Telecom.

Contacts Public Contact First Name: * Brian Last Name: * Greer Position: * EHS Manager Telephone: * 5192150535 Ext   Fax   Email: * brian.greer@polyone.com Person responsible for the Toxic Substance Reduction Plan preparation First Name: * Darryl Last Name: * Chartrand Position: * Senior Air Quality Technologist Telephone: * 4164999000 Ext 73642 Fax 4164994687 Email: * darryl.chartrand@ch2m.com Employees Employees Number of Full­time Employees: * 16 Copy of Certifications of Plan Copy of Certifications of Plan Upload Document A copy of the certification statement(s) from the Highest Ranking Employee and the Licensed Planner(s), for the Toxic Substance Reduction Plan for which the Plan Summary is being submitted are required.