OnCap™ Aversive Masterbatch Additives from PolyOne Receive Biocidal Product Regulation Authorization in Europe POMMERLOCH, Luxembourg – October 1, 2018 – Wire and cable OEMs rely on PolyOne’s industry-leading OnCap™ Aversive masterbatch additives to pro

New Rejoin™ PCR Masterbatch Makes 100 Percent PCR a Reality for Polyolefin Packaging CLEVELAND – March 12, 2021 – Avient today announced the launch of Rejoin™ PCR Masterbatch for polyolefin packaging applications.

$0.30 $0.52 2019 PF 2020 Q4 2020 ORGANIC PERFORMANCE 3 Sales $922 $997 2019 PF 2020 +8% Adjusted Operating Income Adjusted EPS $58 $80 2019 PF 2020 +38% +73% • Record 4th quarter sales, adjusted operating income and adjusted EPS performance • All segments delivered year-over-year sales and operating income growth, led by consumer and healthcare end markets • Clariant Masterbatch integration synergy capture ahead of schedule: $5 million realized in 2020 ($ in millions except EPS) (1) (1) (1) (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition Q4 2020 SEGMENT PERFORMANCE 4 Sales Operating Income $100 $100 $100 $922 $100 $100 $100 $997 Distribution CAI SEM Total 2019 2020 $178 $272 $490 $191 $305 $526 SEM Distribution CAI 2019PF 2020 +8% +7% +7% +12% $5 $5 $5 $58 $5 $5 $5 $80 Avient CAI SEM Total 2019 PF 2020 $17 $19 $40 $18 $30 $58 Distribution SEM CAI 2019PF 2020 +38% +45% +58% +6% (3) (3) ($ in millions) (1) (2) (1) Total company sales include intercompany sales eliminations (2) Total company reflects adjusted operating income and includes corporate costs (3) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition 2020 HIGHLIGHTS 5 • 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 6 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. 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 2021 revenue growth of 8% and long-term 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. Avient acquired the Clariant Masterbatch business (CMB) on July 1, 2020 (the “Acquisition Date”).

Avient acquired the Clariant Masterbatch business (CMB) on July 1, 2020 (the “Acquisition Date”). That’s Avient. 21,000+ CUSTOMERS >75% ARE CUSTOMIZED SOLUTIONS TO UNIQUE SPECIFICATIONS of sales 5 In July 2020, we completed the acquisition of the Clariant Masterbatch business, the largest acquisition in the 20-year history of our company. It’s in this spirit that we joined legacy PolyOne and the Clariant Masterbatch business, two complementary businesses, and formed a new one that we’ve named Avient.

SOLUTIONS FOR FIBER OPTIC CABLE Engineered Fibers, Color & Additives, Specialty Engineered Materials BINDER YARN Flat, low-profile Highly absorbent (up to 65x its weight) BUFFER TUBE SWELLABLE YARN Cleaner than gel Highly absorbent WATER SWELLABLE FRP Non-corrosive, non-conductive, No flaking or shedding Overcoat and upjacketing available STRENGTH MEMBER Aramid or fiberglass yarn Processes cleanly with minimal dust UNDER-SHEATH RIPCORD Swellable, non-wicking Available in colors for easy identificationLASER MARKING ADDITIVES Provide good contrast in black outer jacket for outdoor exposure JACKET Color formulations for PVC, PE, TPU, TPC UV protective additives Non-halogenated colors for LSFOH LSFOH UV formulations for high flame retardancy, chemical and UV resistance, low COF TPE Polyamide, custom polyolefins LOOSE TUBES, TIGHT BUFFERS AND MICRO-MODULES LSFOH UV formulations for improved processing speeds, strippability & gel resistance Customized formulations: PBT PP TPE Color formulations for polyamide, PBT, LSFOH , TPE, TPC (Thermoplastic Copolyester) Laser marking additives https://www.avient.com/products/fiber-line-engineered-fiber-solutions/fiber-line-engineered-fiber-products/ripcords-fiber-optic-cable https://www.avient.com/products/fiber-line-engineered-fiber-solutions/fiber-line-engineered-fiber-products/water-blocking-absorbing-yarn https://www.avient.com/products/fiber-line-engineered-fiber-solutions/fiber-line-engineered-fiber-products/water-blocking-absorbing-yarn https://www.avient.com/products/fiber-line-engineered-fiber-solutions/fiber-line-engineered-fiber-products/fiber-reinforced-polymer https://www.avient.com/products/fiber-line-engineered-fiber-solutions/fiber-line-engineered-fiber-products/strength-members https://www.avient.com/products/fiber-line-engineered-fiber-solutions/fiber-line-engineered-fiber-products/ripcords-fiber-optic-cable https://www.avient.com/products/polymer-additives/performance-enhancement-additives/oncap-laser-marking-additives https://www.avient.com/products/polymer-colorants/solid-color-masterbatches/oncolor-wire-cable https://www.avient.com/products/polymer-additives/uv-and-light-blocking-additives/oncap-uv-stabilizer-additives https://www.avient.com/products/polymer-colorants/solid-color-masterbatches/oncolor-wire-cable https://www.avient.com/products/engineered-polymer-formulations/eco-conscious-formulations/eccoh-low-smoke-and-fume-non-halogen-formulations https://www.avient.com/products/engineered-polymer-formulations/eco-conscious-formulations/eccoh-low-smoke-and-fume-non-halogen-formulations https://www.avient.com/products/thermoplastic-elastomers/onflex-thermoplastic-elastomers https://www.avient.com/products/engineered-polymer-formulations/general-engineered-formulations https://www.avient.com/products/engineered-polymer-formulations/eco-conscious-formulations/eccoh-low-smoke-and-fume-non-halogen-formulations https://www.avient.com/products/engineered-polymer-formulations/eco-conscious-formulations/eccoh-low-smoke-and-fume-non-halogen-formulations https://www.avient.com/products/engineered-polymer-formulations/general-engineered-formulations/bergadur-polyester-formulations https://www.avient.com/products/engineered-polymer-formulations/general-engineered-formulations https://www.avient.com/products/thermoplastic-elastomers/onflex-thermoplastic-elastomers https://www.avient.com/products/polymer-colorants/solid-color-masterbatches/oncolor-wire-cable https://www.avient.com/products/polymer-colorants/solid-color-masterbatches/oncolor-wire-cable https://www.avient.com/products/polymer-additives/performance-enhancement-additives/oncap-laser-marking-additives

Additives can be combined with colors into a single masterbatch for convenience. Discover our color masterbatch portfolio for spun-dyed polyester and polyamide. Low-concern masterbatches that protect wire and cable from rats and termites

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”). Q 2 2 0 2 1 P E R F O R M A N C E U P D AT E $69 $122 2020PF 2021 $0.42 $0.87 2020PF 2021 Q2 2021 – ORGANIC PERFORMANCE ( T O TA L C O M PA N Y ) 4 Sales Adjusted Operating Income $870 $1,235 2020PF 2021 + 42% Adjusted EPS + 77% + 107% (in millions) (in millions) (1) (1) (1) (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition Q2 2021 SEGMENT PERFORMANCE 5 CAI $488 $624 Sales ($ in millions) SEM Distribution $54 $86 Operating Income +28% +59% $239 $404 Sales $15 $24 Operating Income +69% +60% (1) $159 $241 Sales $17 $37 Operating Income +52% +118% (1) (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition SPECIALTY EBITDA MARGIN EXPANSION 6 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 (1) 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 7 Legacy CAI 18.9% 18.9% 20.3% 2019 2020 YTD 2021 Legacy Clariant MB 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. 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.

Cesa™ bright masterbatches convert UV radiation into visible, bluish light in order to improve the long-term, white appearance of finished plastic products. Our light diffusion masterbatches deliver a customer-specified mixture of light transmission, light diffusion, and hiding power.