Pro Forma Financial Information Avient acquired the Clariant Color business on July 1, 2020 (the “Acquisition Date”). To provide comparable financial results, Avient references “pro forma” financial metrics, which include the business results of Clariant Color for periods prior to the Acquisition Date. EPS (ex Amort) 3.96$ 0.13$ 4.09$ (0.58)$ 3.51$ Pro Forma Leverage (12/31/2022E) Net Debt / Adjusted EBITDA 1.6x 3.4x 2.8x Forecast Dyneema Forecast + Dyneema Sale of Distribution Pro Forma 2022 TWO-YEAR LEVERAGE MODEL 20 3.5x 2.7x 1.6x 2.8x 2.4x 2.0x 2019PF 2020PF 2022E 2022PF 2023E 2024E Dyneema® AcquisitionClariant Color Acquisition (1) Pro forma for the acquisition of the Clariant Color business (2) Pro forma for the acquisition of Dyneema® and potential divestiture of Distribution, including repayment of senior notes due 2023 and Term Loan (1) (1) (2) OUR SPECIALTY JOURNEY CONTINUES 21 • Dyneema® brings leading technology and brand with the World’s Strongest Fiber™, deep history of application development and strong management team focused on specialty applications • Dyneema® transaction is aligned with our previously stated acquisition goal of expanding our composites and fiber capabilities • Similar to our other technology expansion acquisitions, Dyneema® allows us to leverage our invest-to-grow strategy • The possible sale of our Distribution business also presents potential benefits with respect to leverage and EBITDA margins 7% 46% 66% 86% 100% 0% 20% 40% 60% 80% 100% 2005 2010 2015 2021 2022 PF % o f A dj us te d EB IT D A(1 ) JVs Distribution Performance Products & Solutions Specialty (1) Adjusted EBITDA is EBITDA excluding corporate costs and special items (2) Pro forma for the acquisition of Dyneema® and potential divestiture of Distribution (2) Healthcare 4% Packaging 8% Consumer 10% Building & Construction 43% Industrial 15% Transportation 14% Energy 4% Telecom. 2% 2006 2022 Pro forma Healthcare 8% Packaging 23% Consumer 21% Building & Construction 10% Industrial 15% Transportation 9% Energy 4% Telecom. 4% Defense 6% END MARKET TRANSFORMATION TO LESS CYCLICAL INDUSTRIES (W ITH DY N EEM A , EX .

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FIBERS PROCESSES PRODUCTS MOVING HIGH PERFORMANCE FIBERS FORWARD KEVLAR® PARA-ARAMID WHY KEVLAR® PARA-ARAMID? KEVLAR® PARA-ARAMID DATA KEVLAR® PARA-ARAMID (HM) BARE FIBER PERFORMANCE * Equilibrium moisture regain @ 55% RH ** Creep @ 40%-58% ultimate tensile strength *** Shrinkage in dry air @ 177 C for 30 minutes MOVING HIGH PERFORMANCE FIBERS FORWARD ABOUT FIBER-LINE® LOCATIONS Headquarters, R&D, Manufacturing FIBER-LINE® LLC 3050 Campus Drive Hatfield, PA 19440 +1 215.997.9181 fiber@fiber-line.com Manufacturing Operations FIBER-LINE® LLC 280 Performance Drive SE Hickory, NC 28602 +1 828.326.8700 fiber@fiber-line.com EMEA & Asia Pacific Operations FIBER-LINE® INTERNATIONAL B.V. They also add important characteristics, such as SWELLCOAT® water-blocking, water repellence, adhe- sion, color, and wear and UV-resistance to these and many other applications.

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Talk to an expert about Continuous Fiber Reinforced Thermoplastic Composites Continuous Fiber Reinforced Thermoplastic Composites What continuous fiber reinforced thermoplastic composites are, and how they differ from other fiber reinforced polymer (FRP) composite materials 

Talk to an expert about Continuous Fiber Reinforced Thermoplastic Composites Continuous Fiber Reinforced Thermoplastic Composites What continuous fiber reinforced thermoplastic composites are, and how they differ from other fiber reinforced polymer (FRP) composite materials 

Talk to an expert about Continuous Fiber Reinforced Thermoplastic Composites Continuous Fiber Reinforced Thermoplastic Composites What continuous fiber reinforced thermoplastic composites are, and how they differ from other fiber reinforced polymer (FRP) composite materials 

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Engineered Fiber Solutions: Fiber-Line™ engineered high-performance fibers, including coated, twisted, and custom wound aramid, glass, carbon, HMPE, and LCP fibers Fiber-Line™ pultruded rods and custom extrusion-coated rods and fibers