January 7, 2014

January 7, 2014 These actions will include aligning assets that were acquired as part of the 2013 acquisition of Spartech with PolyOne’s Performance Products and Solutions (PP&S) segment. These assets are primarily located in Ramos, Mexico and will now operate within Producer Services, a business unit of PP&S, which has headquarters in Seabrook, Texas.

The mass production of glass fibers began in the 1930’s. E-Glass typically is utilized for its high modulus properties as S-Glass has a higher breaking tenacity. S-Glass

PTHF3005 EF UNIMATCH RED (Y/S) PTHF5004 EF UNIMATCH BLUE (R/S) PVFE1020 EKO COTTON WHITE

SY89-22-7 Rev. SY89-23-7 Rev. GEON 06935 WHITE 1448

The color is embedded into the polyester fibers during the spin-dyeing process, which means it won’t bleed out of the yarn when combined with other colored yarns, including light and white ones. Tests show a light fastness of 7 on the blue scale and 4 to 5 on the grey scale (FAKRA) and rubbing and washing fastnesses of 4 to 5. 7

The color is embedded into the polyester fibers during the spin-dyeing process, which means it won’t bleed out of the yarn when combined with other colored yarns, including light and white ones. Tests show a light fastness of 7 on the blue scale and 4 to 5 on the grey scale (FAKRA) and rubbing and washing fastnesses of 4 to 5. 7

The color is embedded into the polyester fibers during the spin-dyeing process, which means it won’t bleed out of the yarn when combined with other colored yarns, including light and white ones. Tests show a light fastness of 7 on the blue scale and 4 to 5 on the grey scale (FAKRA) and rubbing and washing fastnesses of 4 to 5. 7

PE Control Conventional FR Cesa F-Series 1 Cesa F-Series 2 Time, Seconds H ea t R el ea se R at e kW /m 2 2000 1500 1000 500 0 1.844.4AVIENT www.avient.com Copyright © 2024, Avient Corporation. POLYMER PRODUCT NAME PROPERTY PERFORMANCE TYPE DOSAGE/ LDR MATERIAL CODE ABS FRABS92991 UL 94 Halogen 35% CC10292991WE ABS FRABS52399 UL 94 Halogen 5–14% CC10252399WE HDPE Cesa Flam MB 5101AH UL 94 Halogen 7–16% PEAN698479 Nylon Cesa Flam MB 5728H UL 94 Halogen 8–14% ABA0698450 Nylon Cesa Flam MB 5731NH UL 94 Non-halogen 8–20% ABAN698410 PC Cesa Flam NCA0820018NH UL 94 Non-halogen 2–4% NCA0820018 PC NCAN-Z0N-FN FLMRET 698419 UL 94 Non-halogen 3–8% NCAN698419 PE FRPE94802 ASTM E84 Non-halogen 100% CC103094802F PE FRPE41011 UL 94 Halogen 20–30% CC1034101160 PET Cesa Flam MB 5525NH UL 1441, UL 94 Non-halogen 6–8% NEAN698534 PET FRPET65462 UL 94 Non-halogen 5–12% CC103265462F PET/ PBT Cesa Flam MB 5532NH NFPA 701 Non-halogen 4–6% NBAN698451 PP Cesa Flam MB 5201H UL 94 Halogen 6–30% PPAN698410 PP Cesa Flam MB CT-1629NH Cal TB 133, UL 94 Film, NFPA 701 Non-halogen 6–8% PPAN698428 PP FRPP365370 UL 94 Non-halogen 10–20% CC103653702F PP Copolymer FRPP37654 UL 94 5VA Halogen 100% CC10337654WE PP Copolymer FRPP53484 UL 94 Halogen 10% CC1035348460 PS FRPS62722 ASTM E84 Halogen 2–4% CC10262722WE PS/HIPS Cesa Flam SLA0820014H UL 94 Halogen 4–8% SLA0820014H TPU Cesa Flam 98461NH UL 94 Non-halogen 6–14% RUA0698461 F-SERIES FLAME RETARDANT ADDITIVES HDPE/PE F-Series UL 94 Non-halogen 10–25% PEA0820024 PE F-Series UL 2335, FM 4998 Non-halogen 10–25% PEA0820069

Avientʼs Corporate EH&S Department is responsible for overseeing these areas, and it receives input and monitoring from our leadership team and Board of Directors. Skills/Experience Ab er na th y Fe ar on Go ff Gr ee n Je lli so n Li n M in k N ic ol as Pa tt er so n Pr ee te Ve rd ui n W ul fs oh n Financial          International             Industry Expertise          Regulatory        Technology     Human Capital           Operations            Corporate Governance          IT and Cybersecurity      Sustainability             Background Gender Male Male Male Male Male Female Female Male Male Male Female Male Race/Ethnicity White White White Black White White White Black White White White White Other Public Company Boards 1 3 1 — — 2 2 — 1 2 — 1 PROXY SUMMARY PROXY STATEMENT 2022 | Annual Meeting of Shareholders 13 GOVERNANCE HIGHLIGHTS As part of our commitment to overall excellence, our Companyʼs governance practices include the following: Director Independence • Strong commitment to Director independence: Eleven out of our twelve Director nominees are independent 7) Continuation of financial planning benefits is provided under the terms of the Continuity Agreements