& Canada 64% 36% Specialty Engineered Materials Color Additives and Inks 37% 9% 4% 4% Building & Energy Telecom 4 CREATING A WORLD-CLASS SUSTAINABLE ORGANIZATION 1. 6.5% annualized long term sales growth leveraging sustainable solutions, composites, healthcare and emerging regions 2. FX -11% FX -3% Total Avient -14% YoY Comparison against 2022 pro forma results • Aging infrastructure driving need for greater technological advancements and upgrades • Increased focus on strength and capacity of electrical grid plays into further adoption of composites into the market  UV, weather-resistance, customized capabilities  Best-in-class customer responsiveness  Local high-quality manufacturing, unparalleled breadth of portfolio  Expanding position in insulators, utility poles, crossarms, and wind energy Avient Confidential 16 ENERGY 16 • Fiber-optic investments from AT&T, Corning, Commscope continue to drive industry toward innovation • $42B BEAD program in Infrastructure Bill to increase cable deployments; well-positioned to capitalize on “Made in America” requirement and “last mile” buildout  Flame retardance, weather-resistance enables faster, safer, more reliable connections  Local manufacturing, unparalleled breadth of portfolio  Expanding position in insulation for wire jacketing, 5G buildout TELECOMMUNICATIONS Source: U.S. Three Months Ended March 31, 2023 Three Months Ended March 31, 2022 Reconciliation to Condensed Consolidated Statements of Income $ EPS $ EPS Net income from continuing operations attributable to Avient shareholders $ 20.8 $ 0.23 $ 64.4 $ 0.70 Special items, after tax 22.3 0.24 6.4 0.07 Amortization expense, after-tax 15.1 0.16 $ 10.8 $ 0.12 Adjusted net income / EPS $ 58.2 $ 0.63 $ 81.6 $ 0.89 March 31, Reconciliation of Pro Forma Sales 2023 2022 Sales $ 845.7 $ 892.2 APM pro forma adjustments — 94.9 Pro forma sales $ 845.7 $ 987.1 1 Three Months Ended Reconciliation to EBITDA and Adjusted EBITDA: 2023 2022 Net income from continuing operations – GAAP $ 21.3 $ 64.7 Income tax expense 7.7 20.0 Interest expense, net 28.8 16.9 Depreciation and amortization 50.5 37.6 EBITDA from continuing operations $ 108.3 $ 139.2 Special items, before tax 27.3 6.7 Depreciation and amortization included in special items (1.8) (2.1) Adjusted EBITDA $ 133.8 $ 143.8 Pro forma APM adjustments — 32.0 Pro forma adjusted EBITDA $ 133.8 $ 175.8 Pro forma adjusted EBITDA as a % of sales 15.8 % 17.8 % 2023 2022 Sales: Color, Additives and Inks $ 537.0 $ 649.5 Specialty Engineered Materials 309.7 243.1 Corporate (1.0) (0.4) Sales $ 845.7 $ 892.2 Operating income: Color, Additives and Inks $ 65.6 $ 94.5 Specialty Engineered Materials 43.1 38.3 Corporate (51.6) (30.6) Operating income $ 57.1 $ 102.2 Depreciation & amortization: Color, Additives and Inks $ 25.8 $ 26.0 Specialty Engineered Materials 21.2 7.8 Corporate 3.5 3.8 Depreciation & Amortization $ 50.5 $ 37.6 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 91.4 $ 120.5 Specialty Engineered Materials 64.3 46.1 Corporate (48.1) (26.8) Other income (expense), net 0.7 (0.6) EBITDA $ 108.3 $ 139.2 AVNT June IR Conferences w Non GAAP Recs.pdf AVNT Q1 2023 Earnings Presentation.pdf AVNT Q1 2023 Earnings Presentation 5.2 221pm IR Deck - AVNT-2023.03.31 (002).pdf

Can be combined with color Remafin™ Fiber Colorants for PP Renol™ Fiber Colorants

These innovations include Avient’s PCR Color Prediction Service, ColorForward™ 2025, and new grades of polymer additives for flexible film. ColorForward™ 2025: the 19th edition of Avient’s color trend forecast developed to inspire brand owners and designers of plastic products, featuring 20 colors and effects derived from societal trends likely to influence consumer color preferences and the design of consumer products in the future PCR Color Prediction Service: a digital tool that can illustrate the color possibilities or limitations of certain types of recycled resins (PCR) prior to laboratory trials, which can help simplify the overall color decision-making process during product development and launch

Black Colorants for Spun-Dyed PET and PA Fibers - Product Bulletin Additives and Colorants for PP-R and PP-RCT Pipe Systems Fiber Colorants and Additives Overview

Black Colorants for Spun-Dyed PET and PA Fibers - Product Bulletin Additives and Colorants for PP-R and PP-RCT Pipe Systems Fiber Colorants and Additives Overview

Black Colorants for Spun-Dyed PET and PA Fibers - Product Bulletin Additives and Colorants for PP-R and PP-RCT Pipe Systems Fiber Colorants and Additives Overview

Mevopur™ Polymer Colorants and Additives Avient PCR Color Prediction Service - Product Bulletin ColorMatrix Liquid Colorants for PVC Pipes

OMNICOLOR™ MULTIPURPOSE COLORANTS U.S. COLOR SELECTOR OMNICOLOR™ U.S. Due to printing or monitor variations, color shown may vary from actual color.

Homepage // News Center // PolyOne’s New Geon™ Bold Vinyl Solutions Keep Deep Colors Vivid in Outdoor Environments CLEVELAND – Builders and homeowners know that faded colors on fencing, decks and windows can spoil curb appeal and decrease property values. To address these unmet needs, PolyOne developed Geon Bold vinyl solutions that deliver the preferred variety of color choices and the enduring performance that consumers demand.”

Homepage // News Center // Global Premium Brands Count on PolyOne’s Inspired Colors, Materials and Finishes for Luxury Packaging In addition, InVisiO designers work with brand owners to develop new color ranges and adapt existing color palettes to bring the brand’s vision to life.                                      Photo Caption: Inspired colors, materials and finishes that support sensory branding are the focus of PolyOne’s Luxe Pack New York exhibit.