PolyOne Speeds Color Development with New ColorMatrix™ Custom Formulation and Supply System SHANGHAI – At Chinaplas 2014, PolyOne ColorMatrix, the global leader in liquid color and additives for plastics, will launch its newest liquid color

PolyOne Expands Color Portfolio with Acquisition of Mesa... PolyOne Expands Specialty Color Portfolio with Rutland Acquisition... PolyOne Appoints Mark Crist to President of Color, Additives & Inks; Scott Horn to President of Distribution...

PolyOne to Showcase Material, Colorant and Additive Innovations at CHINAPLAS 2018 PolyOne Launches Elegant and Bright OnColor™ Brilliant Metallic Colorants in Asia SHANGHAI – April 20, 2018 – In advance of CHINAPLAS 2018, PolyOne today announced that OnColor™ Brilliant Metallic Colorants, introduced late la

Click Here: New Cosmetics Microsite Featuring GSDI™ Colorsperse™ Silicone Colorants Focuses on Innovative Formulators New Liquid Shimmer and Frost Colors from PolyOne Add Style to PET Containers CLEVELAND – PolyOne today unveiled a new collection of liquid color concentrates for designers and brand leaders that infuse PET container

& Canada EMEA Asia Latin America 64% 36% Specialty Engineered Materials Color Additives and Inks 40% 37% 18% 5% 6% 8% 24% 20% 10% 15% 9% 4% 4% Defense Healthcare Packaging Consumer Building & Construction Industrial Transportation 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 Where Avient Wins:  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 Where Avient Wins:  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 Three Months Ended 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 March 31, 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 % Three Months Ended March 31, 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 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

Considering the cost of replacing aged, damaged, and failed poles, the longer lifespan of an FRP pole results in total cost savings over the life of the pole.

We define child labor as services by anyone under the age of 16 and, if local law is more restrictive than our policy, we will comply with the more restrictive local law.

S ee S p e c if ic I n s tr u c ti o n s o n p ag e 3. 1 Name (as shown on your income tax return).

We define child labor as services by anyone under the age of 16 and, if local law is more restrictive than our policy, we will comply with the more restrictive local law.

Excellent colorability, which can be achieved with pre-colored raw materials or by coloring natural grades during processing Flexibility in processing: The OnFlex S HF material can be supplied in either natural or pre-colored grades. Natural grades can be colored during processing with compatible products from Avient’s OnColor™ color concentrate line.