Smartbatch™ formulations blend design and function in one masterbatch solution  Universal Polyamide Overmold Thermoplastic Elastomer - White Paper White Paper

Liquid Chemical Foaming Additives - White Paper White Paper Antimicrobial technology, custom colors and performance additives in one masterbatch

277862 BL ABS MASTERBATCH 290652 BL ABS MASTERBATCH 311986 GN PA MASTERBATCH

331824 GY PBT MASTERBATCH 334194 GN PP MASTERBATCH 336737 WT SAN MASTERBATCH

Park, Pudong, Shanghai China, 201203 and the sites as mentioned in the appendix accompanying this certificate has been found to conform to the Quality Management System standard: GB/T 19001-2016/ISO 9001:2015 This certificate is valid for the following scope: Design and Manufacture of Masterbatch Certificate No: 7071-1998-AQ-RGC-RvA Place and date: Shanghai, 19 March, 2021 Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid. TEL:+31(0)102922689. www.dnvgl.com/assurance Page 2 of 2 Appendix to Certificate PolyOne-Shanghai, China Locations included in the certification are as follows: Site Name Site Address Site Scope PolyOne Polymer (Tianjin) Company Limited No.28#C, Jin Bin Hi-Tech Industrial Park, 156 Nan Hai Road, Tianjin Economic-Technological, Tianjin, China, 300457 Manufacture of Masterbatch PolyOne-Shanghai, China No. 88, Guo Shou Jing Road, Z. Park, Pudong, Shanghai, China, 201203 Design and Manufacture of Masterbatch

Microsoft Word - Letter Detail Bank Account.docx Avient Colorant Malaysia Sdn Bhd Formerly Known as Clariant Masterbatches (M) Sdn Bhd Company No: 199701025292 (440790-X) Shah Alam Office: Butterworth Site: No. 79 & 80, Hicom Sector B, Lot 1232, MK. 15, Jalan Teluk Gadung 27/93A, Kawasan Industri Kecil & Sederhana, 40000 Shah Alam, Simpang Ampat, Selangor Darul Ehsan, Malaysia. 14120 S.P.S. Tel: (603) 5101 2888 Fax: (603) 5191 8718 Tel: (604) 588 0668 Fax: (604) 588 0590 www.avient.com Date : 17 May 2021 Dear Valued Customer, RE : Electronics Payment Info COMPANY : Bank Account Name: Avient Colorants Malaysia Sdn Bhd Formerly known as CLARIANT MASTERBATCHES (M) SB Business Registration No.: 199701025292 (440790X ) Address : Lot 1232, MK 15, Kawasan Industri Kecil & Sederhana, Simpang Ampat, 14120 S.P.S. Yours faithfully, For and on behalf of, Avient Colorants Malaysia Sdn Bhd Formerly known as Clariant Masterbatches (M) Sdn Bhd This is computer generated document and no signature is require

Avient acquired the Clariant Masterbatch business (CMB) on July 1, 2020 (the “Acquisition Date”). Operating Income $3,783 $4,300 (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition Previous Guidance Current Guidance $3,783 $4,650 $308 $410 $308 $430 $1.93 $2.80 $1.93 $3.00 (1) (1)(1) (1)(1) (1) $442 $457 $580 $1.74 $1.93 $3.00 FULL YEAR 2019 – 2021 ORGANIC GROWTH 16 Sales Adjusted EBITDA $3,981 $3,783 $4,650 + 17% (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition (1)(1) + 31% + 72% ($ in millions) 2021E Adjusted EBITDA 580$ Free Cash Flow 280$ Total Debt 1,860 Less: Cash (755) Net Debt 1,105$ 2021E Net Debt / Adjusted EBITDA 1.9x 17 BALANCE SHEET • Acquisition of Magna Colours completed on July 1 – expands sustainable solutions portfolio through water-based inks technology • Deleveraging to 1.9x net debt to adjusted EBITDA by the end of 2021 • Driven by record adjusted EBITDA performance and strong free cash flow generation from asset light business • Future cash deployment: M&A, opportunistic share repurchases and balance sheet / continued leverage reduction 3.5x 2.7x 1.9x Net Debt / Adjusted EBITDA (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition SUSTAINABILITY FOR A BETTER TOMORROW • Revenue from sustainable solutions expected to grow 14% in 2021 as our innovation efforts and collaboration with customers continues to accelerate • Investments centered around innovation and global sustainability megatrends o Enabling a circular economy – Technologies that allow for increased use of post-consumer recycled (PCR) material and improve recyclability of plastics o Light-weighting – Composites and CAI applications to reduce weight and material requirements, which minimize energy and carbon emissions o Eco-Conscious – Health and human safety applications as well as Avient’s alternative materials to replace lead, PVC, halogens, BPA and other less eco-friendly options 2016 2017 2018 2019 2020PF** Bio-polymers Reduced Energy Use Human Health & Safety Sustainable Infrastructure VOC Reduction Recycle Solutions Eco-Conscious Lightweighting Revenue From Sustainable Solutions* 2016-2020 $405M $455M *Avient Sustainable Solutions definitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) **2020 is Pro Forma to include full year of the Clariant Masterbatch business $340M $550M $790M 19 Key Updates • Includes Clariant Masterbatch performance • Increases disclosures and ESG data • Provides performance updates on 2030 Sustainability Goals • Commits to operational carbon neutrality in 2050 and 100% renewable energy by 2050 (RE 100) • Announces Avient’s participation in U.N. We will deliver for our stakeholders through multiple value creation levers—many of which are unique to Avient: o Demand for sustainable solutions, healthcare, and composites, together with Clariant Masterbatch revenue synergies, that will drive long-term revenue growth in excess of GDP o Clariant Masterbatch cost synergy capture will result in significant near-term benefit In addition, we remain committed to increasing annual dividends in line with earnings growth and opportunistically buying back shares, all while remaining modestly levered.

Colorant Chromatics PEI Masterbatch - Colors for High Temperature Injection Molding Colorant Chromatics PPSU Masterbatch - Colors for High Temperature Injection Molding Applications Smartbatch™ formulations blend design and function in one masterbatch solution 

Remafin™ EP White Colorants Solid Color Masterbatches Remafin™ EP White Colorants

87477 NP EVA AA MASTERBATCH 332632 BK PBT MASTERBATCH WHITE/ PEARL