PolyOne Corporation 3 FACTORS THAT COULD CAUSE ACTUAL RESULTS TO DIFFER MATERIALLY FROM THOSE IMPLIED BY THESE FORWARD-LOOKING STATEMENTS INCLUDE, BUT ARE NOT LIMITED TO: USE OF NON-GAAP MEASURES PolyOne Corporation 4 • This presentation includes the use of both GAAP (generally accepted accounting principles) and non-GAAP financial measures. The non-GAAP financial measures include: adjusted EPS, adjusted operating income, and return on invested capital Below is a reconciliation of these non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with GAAP.

Syncure™ XLPE Cross-linkable Polyethylene Formulations FOR LOW VOLTAGE CABLES PRODUCT SELECTION GUIDE Syncure™ XLPE MOISTURE CROSS-LINKABLE POLYETHYLENE INSULATION FOR LOW VOLTAGE CABLE SYSTEMS SYSTEM S100FH S100FH-XUV S100FH-UV S100FV S100FV-UV S112NA S120NA S200FH S200FV Applications Building Wire, Building Wire, Photo-Voltaic (PV) Wire Building Wire, Teck-90 Pipe and Tube Building Wire, Tray Cable, Service Entrance Building Wire, Tray Cable, Service Entrance Specification UL 44 UL 44 UL 44, UL 4703 UL 44 UL 44 CSA 22.2 Suitable for NSF 61 UL 44 UL 44 Wire Type XHHW-2, RHW-2, USE-2, XHHW-2, RHW-2, USE-2, SIS XHHW-2, RHW-2, USE-2, SIS, PV XHHW-2, RHW-2, XHHW-2, RHW-2, USE-2, SIS, PV RW-90, Teck-90 – RHW-2, RHW, RHH, XHHW-2, XHH, XHHW, SIS RHW, RHH, RHW-2 Components % 83% S1054A 17% V0022G RoHS 83% S1054A 17% V0022G-UV RoHS 70% S1054A 30% V0022G-UV RoHS 50% S1054A 50% V0044G RoHS 50% S1054A 50% V0044G-UV RoHS 95% S1054A 5% S1000B 95% S1016A 5% S1037B 78% S1054A 22% SC5400-0002 RoHS MB ALT FR 50% S1054A 50% SC5400-0003 RoHS MB ALT FR Features Horizontal Flame Horizontal Flame, UV Resistant, Colors Possible Horizontal Flame, FV-1 Flame, UV Resistant, Colors Possible VW-1 VW-1, UV Resistant, Colors Possible Non-FR Rigid Pipe Applications Horizontal Flame, DBDPE-free VW-1, DBDPE-free GENERAL PROPERTIES Specific Gravity 1.01 1.02 1.10 1.31 1.31 0.92 0.95 1.01 1.31 Hardness Shore D, 10 Seconds 47 47 47 48 48 47 59 47 48 Gel 68 68 70 70 70 72 72 68 70 TENSILE PROPERTIES Tensile Strength (psi) 2800 2500 2650 3200 2650 2800 4500 2800 3200 Elongation % 400 400 540 470 540 400 80 400 470 Tensile Retention % 100 100 97 110 110 95 75 95 100 Elongation Retention % 90 90 94 100 100 90 75 90 93 ELECTRICAL Dielectric Strength (V/mil) 1000 1400 1400 1200 1200 1000 – 1000 1200 Dielectric Constant 2.31 2.45 2.61 2.61 2.61 2.24 2.1 2.31 2.61 Dissipation Factor % 0.0012 0.0080 0.008 0.0043 0.0043 0.0008 0.002 0.0012 0.0043 THERMAL Temperature Rating °C 90 90 90 90 90 90 125 90 90 Heat Deformation % 10 5 5 5 5 10 10 10 5 The Syncure™ XLPE portfolio is a two-step, silane- grafted, moisture cross-linkable polyethylene system. FEATURES • Ambient curing • Flame performance • Resistant to heat, oil, creep and abrasion • Low temperature properties • Temperature ratings up to 125°C • Low capital investment • High extrusion speeds • UL/CSA bulletins 1.844.4AVIENT www.avient.com Copyright © 2023, Avient Corporation.

These additives include concentrates for UV stabilization, flame retardancy, antimicrobial effectiveness, antistatic performance, oxidation protection, water repellency, processing aids for recycled fibers, and more. The MagnaColours ITO range can offer optimized textile performance to meet strict industry compliance standards through a wide range of UV treatments, fire retardants, dyes, chemicals, and other treatments. Avient will highlight key ITO range solutions, including ITOGUARD AQUASHIELD+ non-PFC water-repellent agents and ITOWASH RWB low-temperature wash-off agents for reactive dyes.

Are UV protection and/or flame retardant packages available?

Are UV protection and/or flame retardant packages available?

Stat-Tech™ formulations provide electrostatic discharge, flame retardant performance, and excellent stiffness for cash machine tray Pallet Non-slip Strips Stat-Tech™ Static Dissipative & Electrically Conduction formulations provided flame retardant and anti-static solution for vacuum cleaner handle

The non-GAAP financial measures include Free Cash Flow and Adjusted EBITDA Margin. A reconciliation of each historical non-GAAP financial measure with the most directly comparable GAAP financial measure is attached to this presentation, which is posted on our website at www.avient.com. This is due to the inherent difficulty of forecasting the timing and amount of certain items, such as, but not limited to, mark-to-market adjustments associated with benefit plans, environmental remediation costs, acquisition-related costs, and other non-routine costs.

Answering the market need for flame retardance and low smoke performance, the Plenstar series includes five grades of cable jacketing materials.  PHOTO CAPTION:  PolyOne introduces Geon™ Plenstar™ plenum series of telecommunications cable jacketing materials, which meet UL approvals and satisfy all flame and smoke requirements.

ECCOH™ Low Smoke and Fume Non-Halogen Formulation 5983 With high environmental stress cracking resistance for power cable jacketing The new ECCOH™ 5983 formulation helps prevent environmental stress cracking in low and medium-voltage armored power cables, helping to prevent costly cable damage and disrupted power supply. MARKETS AND APPLICATIONS • Cable jackets for low and medium-voltage power cables with metal armoring, typically installed underground or where installation requires them to be bent • Armored cable applications that require compliance with LTS1 requirements as per the BS 7655-6.1 standard IMPACT • High environmental stress cracking resistance • High tear strength and elongation at break at temperatures ranging from -25°C to 90°C • Flame retardant performance • Limiting oxygen index (LOI) of 36% • Exceeds BS 7655-6.1:1997 standard criteria for LTS1–LTS4 for complex designs and armored cables PRODUCT BULLETIN Cable jacket liable to cracking Power Cable Cross Section Metal armoring 1.844.4AVIENT www.avient.com Copyright © 2023, Avient Corporation.

PACKAGING SOLUTIONS Film & Sheet SELECTION GUIDE Anti-block BOPET application (PV back sheet, packaging film, industry film) Sleeve application (PETG) Anti-static Migrating anti-static system Flame retardant Halogen free flame retardant system, transparent, UL94 VTM-0 Light stabilizer Protection for outdoor application (UV 380nm) Protection for screen application (UV 400nm) Matting agent Matting agent Pinning agent Increased conductivity O2 scavenger Content protection against oxygen White masterbatch Blue shade white Standard white Black masterbatch Carbon black Cool black system BOPET STANDARD PRODUCT PORTFOLIO Anti-block Standard anti-block Printable A/B/A PET sheet and film High-transparent and low COF Anti-static A/B/A film or sheet (transparency) A/B/A film or sheet (matte) Impact modifier Improve sheet elongation at low temperature Chain extender IV improver, EU food and FDA approved White masterbatch Standard white Matting agent Surface matting agent APET SHEET PRODUCT PORTFOLIO Slip agent Mainly used for multilayer PE/PP film and composite film Anti-block Pure anti-block can be used in transparent film Contain both anti-block and slip agent for polyolefin film Processing masterbatch Used in blowing and tape casting of PE/PP (liquid) Anti-oxidant Protection of film from degrading while processing Increase reclaimed ingredients in the formula Light stabilizer Protection of content Low precipitation, which is especially suitable for thinner PE products, such as film and spinning Anti-fog Good resistance to cold and hot fog, and suitable for thinner film Anti-static Applicable to multilayer PE/PP film and composite film PO SHEET PRODUCT PORTFOLIO www.avient.com Copyright © 2021, Avient Corporation.