Our processing aids benefit polyolefin producers looking to boost output rates without sacrificing quality may get help from our processing aids. Low rate of addition

Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; the current and potential future impact of the COVID-19 pandemic on our business, results of operations, financial position or cash flows including, without limitation, any supply chain and logistics issues; changes in laws and regulations regarding plastics in jurisdictions where we conduct business; fluctuations in raw material prices, quality and supply, and in energy prices and supply; production outages or material costs associated with scheduled or unscheduled maintenance programs; unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; our ability to achieve the strategic and other objectives relating to the Avient Protective Materials business; an inability to raise or sustain prices for products or services; our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; information systems failures and cyberattacks; amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; and other factors affecting our business beyond our control, including without limitation, changes in the general economy, changes in interest rates, changes in the rate of inflation and any recessionary conditions. Three Months Ended September 30, Nine Months Ended September 30, Reconciliation to Consolidated Statements of Income 2022 2021 2022 2021 Sales $ 823.3 $ 818.0 $ 2,606.5 $ 2,508.5 Gross margin - GAAP 195.4 215.6 710.7 727.3 Special items in gross margin (Attachment 3) 31.8 17.3 35.6 27.7 Adjusted gross margin $ 227.2 $ 232.9 $ 746.3 $ 755.0 Adjusted gross margin as a percent of sales 27.7 % 28.5 % 28.6 % 30.1 % Operating income - GAAP 40.6 52.8 242.9 229.6 Special items in operating income (Attachment 3) 40.2 20.0 48.8 36.6 Adjusted operating income $ 80.8 $ 72.8 $ 291.7 $ 266.2 Adjusted operating income as a percent of sales 9.8 % 8.9 % 11.2 % 10.6 % The table below reconciles pre-special income tax expense and the pre-special effective tax rate to their most comparable US GAAP figures. Three Months Ended September 30, 2022 2021 GAAP Results Special Items Adjusted Results GAAP Results Special Items Adjusted Results (Loss) income from continuing operations before income taxes $ (29.0) $ 82.0 $ 53.0 $ 35.4 $ 19.9 $ 55.3 Income tax expense - GAAP 1.2 — 1.2 (2.0) — (2.0) Income tax impact of special items (Attachment 3) — (20.5) (20.5) — (4.6) (4.6) Tax adjustments (Attachment 3) — 6.8 6.8 — (3.6) (3.6) Income tax (expense) benefit $ 1.2 $ (13.7) $ (12.5) $ (2.0) $ (8.2) $ (10.2) Effective Tax Rate(1) 4.1 % 23.7 % 5.7 % 18.4 % (1) Rates may not recalculate from figures presented herein due to rounding 14 Nine Months Ended September 30, 2022 2021 GAAP Results Special Items Adjusted Results GAAP Results Special Items Adjusted Results Income from continuing operations before income taxes $141.2 $ 89.6 $ 230.8 $176.1 $ 36.5 $ 212.6 Income tax expense - GAAP (41.5) — (41.5) (32.1) — (32.1) Income tax impact of special items (Attachment 3) — (22.5) (22.5) — (8.9) (8.9) Tax adjustments (Attachment 3) — 10.8 10.8 — (1.6) (1.6) Income tax (expense) benefit $ (41.5) $ (11.7) $ (53.2) $ (32.1) $ (10.5) $ (42.6) Effective Tax Rate(1) 29.4 % 23.1 % 18.2 % 20.0 % (1) Rates may not recalculate from figures presented herein due to rounding Three Months Ended September 30, Nine Months Ended September 30, Reconciliation to EBITDA and Adjusted EBITDA: 2022 2021 2022 2021 Net (loss) income from continuing operations – GAAP $ (27.8) $ 33.4 $ 99.7 $ 144.0 Income tax (benefit) expense (1.2) 2.0 41.5 32.1 Interest expense 37.3 19.0 70.4 57.8 Depreciation and amortization from continuing operations 39.8 36.6 113.7 107.1 EBITDA $ 48.1 $ 91.0 $ 325.3 $ 341.0 Special items, before tax 82.0 19.9 89.6 36.5 Interest expense included in special items (10.0) — (10.0) — Depreciation and amortization included in special items (0.8) (0.9) (4.0) (0.1) Adjusted EBITDA $ 119.3 $ 110.0 $ 400.9 $ 377.4 NEWS RELEASE Attachment 1

The loading of filler needed to reach this threshold varies by the type and grade of conductive filler and the amount present per volume of polymer. All vents should allow trapped air and gasses to escape to the area outside the mold. Regardless of these suggestions, you need to experiment with your equipment and the polymer to be compounded in order to establish the processing you want.

The loading of filler needed to reach this threshold varies by the type and grade of conductive filler and the amount present per volume of polymer. All vents should allow trapped air and gasses to escape to the area outside the mold. Regardless of these suggestions, you need to experiment with your equipment and the polymer to be compounded in order to establish the processing you want.

The loading of filler needed to reach this threshold varies by the type and grade of conductive filler and the amount present per volume of polymer. All vents should allow trapped air and gasses to escape to the area outside the mold. Regardless of these suggestions, you need to experiment with your equipment and the polymer to be compounded in order to establish the processing you want.

The loading of filler needed to reach this threshold varies by the type and grade of conductive filler and the amount present per volume of polymer. All vents should allow trapped air and gasses to escape to the area outside the mold. Regardless of these suggestions, you need to experiment with your equipment and the polymer to be compounded in order to establish the processing you want.

The loading of filler needed to reach this threshold varies by the type and grade of conductive filler and the amount present per volume of polymer. All vents should allow trapped air and gasses to escape to the area outside the mold. Regardless of these suggestions, you need to experiment with your equipment and the polymer to be compounded in order to establish the processing you want.

What is the range of liquid addition rate? VALUE BENEFITS OF USING THE FLEXCART NANO SYSTEM The FlexCart Nano metering system is market leading: • Robust and dependable system control • Reliable yield (typically above 90%) and sustainable packaging • Fully supported technology • Small footprint designed for very low throughputs FLEXCART™ NANO LIQUID METERING SYSTEM Combined with the PlanetPak™ delivery packaging ATTRIBUTE FLEXCART NANO Footprint (LxW cm) 55 x 30 Controller options 3000 Typical max. throughput (kg/hr) 50 Max. metering rate (cc/s) 1.8 Continuous use No Transfer pumps N/A Metering pumps Peri Interchangeable cassette No Note: Peri = Peristatic Pump PLANETPAK™ CONTAINERS The FlexCart range of metering systems is designed to work with the standardized Avient range of packaging, typically achieving 99% reliable yield on continuous operating systems, and at the same time achieving a sustainable packaging format in terms of full recyclability.

OnColor™ UL 94 Colorants* • More than 2,000 recognized concentrates available worldwide in all color options • HB rating for most of PP, PS, ABS, PC/ABS, PBT, PA, PA-GF, TPU generic resins • V-0, V-1, V-2 and 5VA/5VB ratings for more than 200 specific engineering resins • Master file of recognized concentrates with scope of use accessible in the UL product finder • Development of custom products for specific resins upon request • Compliance Letters available for REACH and RoHS Cesa™ Flame Retardant Additives for Glow Wire • Fire performance in line with different levels of Glow Wire temperatures (IEC 60695-2-12) • Let-Down Ratio adjustable to reach different levels of Glow Wire temperatures • Non-halogen (in accordance with IEC 61249- 2-21) and non-HBCD** solutions • Wide range of solutions adapted to different polymers (PP, PS, PC) • Color and flame retardants can be combined in one product • Compliance Letters available for REACH and RoHS APPLICATION BULLETIN * Solutions also sold as Renol™ UL 94 Colorants APPLICATION POLYMER GWFI TEMPERATURE TYPICAL LET-DOWN RATIO CONTENT HIPS 750–960°C 5–10% Non-HBCD flame retardant** PC 850–960°C 2–4% Non-halogen in accordance with IEC 61249-2-21 PP homopolymer 850–960°C 4% Non-halogen in accordance with IEC 61249-2-21 PP copolymer 850–960°C 4–8% Antioxidant - metal deactivator ** Non-HBCD means that Hexabromocyclododecane (HBCD) is neither used as starting material during the mixing phase of our products nor intentionally added during production, but it cannot be excluded that it is not present at level of ubiquitous traces in any of the raw materials used in manufacturing of our products.

MATERIAL SOLUTION DESCRIPTION KEY CHARACTERISTICS POTENTIAL APPLICATIONS Hammerhead™ FR Flame Retardant Composite Panels Industry-first flame retardant thermoplastic composite panels that meet ASTM E84 Class A standards for flame spread and smoke developed and configurations available to meet NFPA 286 corner room burn testing • Excellent flame performance • Moisture, UV, corrosion, impact, and rot resistant • Lightweight structural integrity • Reduce labor cost and time • Interior Wall, Floor & Ceiling Panel Systems • Garage Doors • Interior & Entry Doors • Exterior Sheathing • Siding & Cladding • Kitchen Cabinetry Hammerhead™ and Polystrand™ Composite Panels Thermoplastic composite panels constructed with Polystrand™ continuous fiber laminates thermally bonded to thermoplastic foam or honeycomb cores • Moisture, UV, corrosion, impact, and rot resistant • Lightweight structural integrity • Reduce labor cost and time • Garage Doors • Interior Entry Doors • Interior Wall, Floor & Ceiling Panel Systems • Exterior Sheathing • Siding & Cladding • Kitchen Cabinetry Polystrand™ Continuous Fiber Tapes & Laminates High strength unidirectional (UD) glass fibers combined with thermoplastic resins available in unidirectional tapes or multi-ply laminates • High strength and stiffness • Enables impact resistance • Formulations available to meet ASTM E84 Class A and Class B flame/smoke rating • Composite Deckng • Interior & Entry Doors • Roofing Systems GlasArmor™ Ballistic Resistant Panels Ballistic protection constructed from layers of 0°/90° woven E-glass fiber reinforcements with a proprietary thermoset resin system • UL 752 Level 1–3 compliant • Less than 25% the weight of comparable steel panel • 1-hr fire rating per ASTM E119* • Safe/Panic Rooms • Garage Doors • Interior & Entry Doors ThermoBallistic™ Thermoplastic Panels Industry-first thermoplastic ballistic resistant panels thermally formed with layers of 0°/90° UD E-glass fiber reinforcements and polyolefin-based resin systems • UL 752 Level 3 compliant • Extremely lightweight • Moisture, UV, and corrosion resistant • Safe/Panic Rooms • Garage Doors • Interior & Entry Doors * UL Level 3 panel was fire tested as part of a wall system with steel studs and drywall facesheet