EXTRUSOR Tornillo 1½" to 6" para polietileno—Maddock; relación de compresión 3:1 Cabezal De presión Dado Del tamaño adecuado para una hilera de 1/8" o menos L/D 24:1 o superior Paquete de mallas Malla de 20/60/60/20 Canal de enfriamiento 50–65°C Alimentador Gravimétrico—3 compartimentos (para el color) Condiciones de secado, solo para catalizador Desecante, 4 horas a 60°C PROCESAMIENTO Temperatura Precalentamiento del alambre 110–120°C Zonas de alimentación 165°C Transición 170°C Dosificación 177°C Cabezal/dado 182°C Material fundido 177–190°C Llama a la punta del salida del dado Sí Velocidad de la línea La velocidad superior de la línea mejora mezclado de los dos compuestos y apariencia superficial del dislamiento de la superficie Compuesto de purga HDPE www.avient.com Copyright © 2020, Avient Corporation.

POLYMER FAMILY MATERIAL PRODUCT NAME PRODUCT TYPE DOSAGE Polyolefin PEAN698413 CESA Antimicro SE 99-58 Silver 2–7.5% Polyolefin PEAN698432 CESA Antimicro J8146 Zinc 1–4% Polypropylene PPA0698636 CESA Antimicro J8259 Zinc 1–4% Nylon ABA0820032 CESA Antimicro ABA0820032 Silver 2–7.5% Polyester NBAN698441 CESA Antimicro S58441 Silver 2–7.5% Polycarbonate NCAN820009 CESA Antimicro NCAN820009 Silver 2–7.5% TPU RUA0698433 CESA Antimicro J8843 Zinc 1–4% Styrenic SLA0820011 CESA Antimicro SLA0820011 Zinc 1–4%

Santiago, 3 Junio 2021 C ó d ig o d e V e ri fic a ci ó n : 0 1 2 -2 1 0 6 -0 3 0 9 -1 1 4 2 012-2106-0309-1142 Documento incorpora Firma Electronica Avanzada Código de Verificación: cec_1c0abd-0 pagina 2 de 2 EDUARDO JAVIER DIEZ MORELLO 2021-06-03T10:28:54-0600 Santiago Firma Electrónica Notario 2021-06-04T10:37:47-0400

H61173 Page 1 of 3 Validity 01. 03. 2025  – 29. 02. 2028 Issue 01. 03. 2025 A.Grisard, President SQS F. EN ISO 13485:2016 H61173 01.03. 2025 29.02. 2028 4 0 2 0 _2 / J an u ar 2 0 2 4 _V er si o n 3 .1 Appendix Reg. no. EN ISO 13485:2016 H61173 01.03. 2025 29.02. 2028 4 0 2 0 _2 / J an u ar 2 0 2 4 _V er si o n 3 .1 Appendix Reg. no.

The most common tests specified by UL94 are the vertical burning (V-0; V-1; V-2) test and horizontal burning (HB) test. For V-0, V-1, V-2, 5VA and 5VB, the color concentrates have to be listed with reference to specific resin grades. RENOL™ UL94 COMPLIANT MASTERBATCHES HOW TO USE THE TABLES UL HB GENERIC RESIN TYPE FLAME RATING MINIMUM THICKNESS (MM) MAXIMUM LET-DOWN RATIO Acetal Copolymer (POM) HB 1.50 1:20 Acrylonitrile Butadiene Styrene (ABS) HB 1.50 1:10 Ethylene Propylene Thermoplastic Rubber (EPTR) HB 1.50 1:20 High Impact Polystyrene (HIPS) HB 1.50 1:10 Liquid Crystal Polymer (LCP) HB 0.83 1:10 Polyamide (PA) HB 3.20 1:33 Polyamide (PA66 and PA 4/6) HB 0.81 1:20 Polyamide 6 (PA6) HB 0.75 1:25 Polyamide 66 (PA66) HB 0.40 1:40 Polybutylene Terephthalate (PBT) HB 0.81 1:20 Polybutylene Terephthalate/Polycarbonate (PBT/PC) HB 1.50 1:10 Polycarbonate (PC) HB 1.50 1:15 Polycarbonate/Acrylonitrile Butadiene Styrene (PC/ABS) HB 1.50 1:20 Polycarbonate/Polyethylene Terephthalate (PC/PET) HB 1.50 1:20 Polyethylene (PE) HB 1.50 1:50 Polyethylene Terephthalate (PET) HB 0.80 1:16.7 Polyketone HB 1.50 1:20 Polymethyl Methacrylate (PMMA) HB 3.00 1:25 Polypropylene (PP) HB 1.50 1:15 Polystyrene (PS) HB 0.83 1:15 Polyurethane (PUR) HB 1.50 1:25 Polyvinylchloride (PVC) HB 1.50 1:20 Styrene Acrylonitrile (SAN) HB 1.50 1:20 Thermoplastic Elastomer (TPE) HB 0.75 1:25 UL94 V-0, V-1, V-2 ASCEND GENERIC RESIN TYPE SPECIFIC BASE RESIN MINIMUM THICKNESS (MM) FLAME RATING MAXIMUM LET-DOWN RATIO Polyamide 66 (PA66) 21X1(a)(f2), 21SPC1(a)(f2), 21SPF1(a)(f2), 21SPG1(a)(f2), 21SPM1(a)(f2), 20NSP1(a)(f2) 0.75 V-2 1:40 22HSP(e) 0.75 V-2 1:40 64C-R 3.0 V-2 1:50 ECO366(e) 0.4 V-0 1:40 ECO366H(e) 0.2 V-0 1:25 FR350J 0.4 V-0 1:25 20NSP(a)(f2), 21SPF(a)(f2), 21SPM(a)(f2), 21SPC(a)(f2) 0.4 V-2 1:40 20NSP(a)(h)(f2), 21SPF(a)(h)(f2), 21SPM(a)(h)(f2), 21SPC(a)(h) (f2) 1.5 V-2 1:20 Polyamide 66/6 (PA66/6) ECO315(e), ECO315J(e) 0.4 V-0 1:40 M344 3.0 V-0 1:25 909 0.75 V-0 1:25 UL94 V-0, V-1, V-2 BASF GENERIC RESIN TYPE SPECIFIC BASE RESIN MINIMUM THICKNESS (MM) FLAME RATING MAXIMUM LET-DOWN RATIO Polyamide 6 (PA6) 8202(t1), 8202 Blend (t1) 0.71 V-2 1:25 8202C(t1), 8202C BLEND (t1) 1.50 V-2 1:25 8202CHS(t1) (t3), 8202C HS Blend 1.50 V-2 1:25 8202HS(t1) 1.50 V-2 1:25 B3S 0.80 V-2 1:25 1.50 V-2 1:25 B3S Q661 1.50 V-2 1:25 B3S R03 1.50 V-2 1:25 8232G HSFR(t9), B3U10G5 (t9) 1.50 V-0 1:25 Polyamide 6/66 (PA6/66) C3U (m) 0.40 V-0 1:25 KR4205(m), C3U (m), C3U (t)(m) 0.40 V-0 1:25 KR4205, C3U 0.40 V-0 1:25 Polyamide 66 (PA66) 1000(b), 1310-(b), Ultramid A3K Q603(+) 1.50 V-2 1:10 A3K (o) Q790(g)(f2) 0.41 V-2 1:20 A3K(f2), A3K Q601(f2) 0.41 V-2 1:20 A3SK 0.41 V-2 1:25 A5 3.00 V-2 1:33 A3W(f1), A3W FC (f1) 0.75 V-2 1:10 A3K R01 (t)(g)(f2) 0.40 V-2 1:20 Polybutylene Terephthalate (PBT) B4406 G2 (o) Q798 1.50 V-0 1:20 B4406 G2(a), B4406 G2 (o) Q717(a) 1.50 V-0 1:20 B4406 G3 (o) Q798 1.50 V-0 1:20 B4406 G3(a), B4406 G3 (o) Q717(a) 1.50 V-0 1:20 B4406 G4 (o) Q798 1.50 V-0 1:20 B4406 G4(a2), B4406 G4 (o) Q717(a2) 1.50 V-0 1:20 B4406 G6 (o) Q798 3.00 V-0 1:12.5 B4406 G6(%) 1.50 V-0 1:20 B4406 G6(a1), B4406 G6 (o) Q717(a1), B4406 G6 (o) Q717 High Speed(a1) 1.50 V-0 1:20 B4406(a), B4406 (o) Q717(a) 1.50 V-0 1:20 B4406@ 1.50 V-0 1:20 B4450 G5, B4450 G5 (t) 0.40 V-2 1:50 Polyurethane (PUR) 11 85 A(a) FHF 000 (f2) 0.75 V-0 1:33 UL94 V-0, V-1, V-2 CELANESE GENERIC RESIN TYPE MINIMUM THICKNESS (MM) FLAME RATING MAXIMUM LET-DOWN RATIO Liquid Crystal Polymer (LCP) A130(+), MT1310 1.50 V-0 1:40 Polyamide 66 (PA66) A3 GF 25 V0XI, A G5 FR C4 0.40 V-0 1:25 Polybutylene Terephthalate (PBT) 2012-2 1.50 V-0 1:20 2016(b) 1.50 V-0 1:20 3112-2 1.50 V-0 1:20 3116(b) 1.50 V-0 1:20 3216(b) 1.50 V-0 1:20 3310-2(f2) 1.50 V-0 1:20 3311-3(f2) 1.50 V-0 1:20 3316(b) 1.50 V-0 1:20 3316(b), 3316HF 1.50 V-0 1:20 COVESTRO GENERIC RESIN TYPE SPECIFIC BASE RESIN MINIMUM THICKNESS (MM) FLAME RATING MAXIMUM LET-DOWN RATIO Polycarbonate (PC) 2407 + (z)(f1) 0.75-2.60 V-2 1:10 2807 + MAS183 0.75 V-2 1:25 6455 + (z) 3.00 V-0 1:25 1.50 V-2 1:25 6485 + (z)(f1) 1.50 V-0 1:25 Polycarbonate/ Acrylonitrile Butadiene Styrene (PC/ABS) FR110 + 1.50 V-0 1:33 FR3005 HF + (z), FR3005 HF + BBS314 1.50 V-0 1:12.5 FR3010 + (z) 3.00 V-0 1:25 1.50 V-0 1:25 FR3010 HF + 3.00 V-0 1:25 FR3030 + 3.00 V-0 1:25 UL94 V-0, V-1, V-2 DSM GENERIC RESIN TYPE SPECIFIC BASE RESIN MINIMUM THICKNESS (MM) FLAME RATING MAXIMUM LET-DOWN RATIO Polyamide 46 (PA46) TE250F6(h1)( j) 0.50 V-0 1:25 Polyamide 6 (PA6) F223-D(f1), F223-D /A(f1) 0.75 V-2 1:25 K222-KGV5(f1) 0.75 V-2 1:16.7 1.50 V-2 1:16.7 K-FKGS6/B(f1)(y) 0.80 V-0 1:25 Polyamide 66 (PA66) SG-KGS6/HV 0.75 V-0 1:25 Thermoplastic Elastomer (TPE) PL460-S 1.60 V-0 1:25 Polyamide 4T (PA4T) T11 (h) 0.40 V-0 1:20 DOMO GENERIC RESIN TYPE SPECIFIC BASE RESIN MINIMUM THICKNESS (MM) FLAME RATING MAXIMUM LET-DOWN RATIO Polyamide (PA) J 60X1 V30 0.40 V-0 1:25 Polyamide 6 (PA6) PSB 286 0.80 V-2 1:25 3.00 V-2 1:25 Polyamide 66 (PA66) A 205F(r4) 0.38 V-2 1:25 A 225F 0.75 V-2 1:25 A 50H1 (r3)(f2) 0.40 V-0 1:25 A 30G1 0.40 V-0 1:25 DUPONT UL94 V-0, V-1, V-2 GENERIC RESIN TYPE SPECIFIC BASE RESIN MINIMUM THICKNESS (MM) FLAME RATING MAXIMUM LET-DOWN RATIO Polyamide (PA) 132F(+)(f1), 135F(+)(f1) 0.75 V-2 1:20 HTNFR42G30NH 0.40 V-0 1:25 Polyamide 6/12 (PA6/12) 151, 151L 1.50 V-2 1:25 Polyamide 66 (PA66) 101(r9)(f1), 101F(r9)(f1), 101L(r9)(f1), E101(r9)(f1), E101L(r9)(f1) 0.75 V-2 1:20 103FHS(+), 103HSL(+), RN5077E(+), E103HSL(+) 0.75 V-2 1:20 A428 0.75 V-0 1:20 FE3757(+) 0.75 V-2 1:25 FR15(+) 0.75 V-0 1:20 FR50(+)(f1) 0.35 V-0 1:20 FR7025V0F(+) 0.50 V-0 1:33 Polyamide 66/6 (PA66/6) FR72G25V0 0.80 V-0 1:25 Polyamide 66/6T (PA66/6T) FR95G25V0NH 0.40 V-0 1:25 Polyamide 6T/66 (PA6T/66) HTNFR52G15AL 0.75 V-0 1:33 HTNFR52G30BL(r3) 0.75 V-0 1:33 HTNFR52G30L(+), FE15502(+), HTNFR52G30AL(+) 0.75 V-0 1:33 HTNFR52G30NH(r6) 0.40 V-0 1:25 0.75 V-0 1:10 HTNFR52G35BL 0.75 V-0 1:25 HTNFR52G35L(+), HTNFR52G35AL 0.75 V-0 1:33 Polyamide 6T/ MPMDT HTNFR51G35L(+) 0.81 V-0 1:33 Polybutylene Terephthalate (PBT) LW9030FR 1.50 V-0 1:25 S650FR 1.50 V-0 1:25 SK642FR 1.50 V-0 1:25 SK652FR1 1.50 V-0 1:16.5 T841FR (r4) 1.50 V-0 1:25 Polyethylene Terephthalate (PET) FR530(l)(+)(f1), FR530L(l)(+)(f1) 0.75 V-0 1:25 Thermoplastic Elastomer (TPE) HTR8068 1.60 V-0 1:25 UL94 V-0, V-1, V-2 EXXONMOBIL GENERIC RESIN TYPE SPECIFIC BASE RESIN MINIMUM THICKNESS (MM) FLAME RATING MAXIMUM LET-DOWN RATIO Ethylene Propylene Thermoplastic Rubber (EPTR) 251-80W232(f7) 1.50 V-2 1:20 251-92W232 1.50 V-0 1:20 251-70W232 1.50 V-0 1:10 1.00 V-2 1:10 LANXESS GENERIC RESIN TYPE SPECIFIC BASE RESIN MINIMUM THICKNESS (MM) FLAME RATING MAXIMUM LET-DOWN RATIO Polyamide 6 (PA6) B30S+(f1) 1.50 V-2 1:25 B31SK+ 1.50 V-2 1:25 Polybutylene Terephthalate (PBT) B4235+ 1.50 V-0 1:10 TP364-302+, BF4232+(f1) 0.75 V-0 1:25 UL94 V-0, V-1, V-2 SABIC GENERIC RESIN TYPE SPECIFIC BASE RESIN MINIMUM THICKNESS (MM) FLAME RATING MAXIMUM LET-DOWN RATIO Polybutylene Terephthalate (PBT) 310(w) 1.50 V-0 1:20 310SE0(w) 1.50 V-0 1:20 310SE0(w),310SE0R(w) 1.50 V-0 1:20 420SE0(f1)(w)(GG)(rr1) 1.50 V-0 1:20 420SE0(f1)(w)(GG)(rr2) 1.50 V-0 1:20 457(w) 1.50 V-0 1:20 457(w), 451(w) 1.50 V-0 1:20 553(a)(f1)(w) 1.50 V-0 1:20 553(a)(f1)(w), 553E(a)(f1)(w), 553U(a)(f1)(w) 1.50 V-0 1:20 553(w)(f1), 553M(w)(f1) 1.50 V-0 1:20 DR48(w) 1.50 V-0 1:20 DR48,DR48M 1.50 V-0 1:20 V4760(a2) 0.40 V-0 1:20 EXVX1259, ENH4550 0.40 V-0 1:20 771 0.75 V-0 1:25 Polybutylene Terephthalate/ Polycarbonate (PBT/PC) 357(f1)(w)(IC), 357M(f1)(w)(IC), 357U(f1)(w)(IC) 1.50 V-0 1:20 357(f1)(w)(IC), 357U(f1)(w)(IC) 1.50 V-0 1:20 357X(f1) 1.50 V-0 1:20 V3900WX(GG)(f1)(IA), V3901WX(GG)(f1)(IA) 3.00 V-0 1:20 1.50 V-0 1:20 357(w)(f2)(IC), 357M(w)(f2)(IC), 357U(w)(f2)(IC) 1.50 V-0 1:20 UL94 V-0, V-1, V-2 SABIC GENERIC RESIN TYPE SPECIFIC BASE RESIN MINIMUM THICKNESS (MM) FLAME RATING MAXIMUM LET-DOWN RATIO Polycarbonate (PC) 221(f2) 1.50 V-2 1:25 221R(f2) 1.50 V-2 1:25 500(f2), 500R(f2) 3.00 V-0 1:33 503(f1) 3.00 V-0 10:1 1.50 V-0 10:1 503(f1), 503R(f1) 3.00 V-0 10:1 1.50 V-0 10:1 943(ab) 1.50 V-0 1:20 943(f1) 1.50 V-0 1:20 943(f1), 923(f1) 1.50 V-0 1:20 950A, 920ASR, FXD911A(GG), 940ASR 1.50 V-2 1:25 CFR7630(f1)(gg*) 1.50 V-0 1:25 ML5139R(f2) 3.00 V-0 1:33 950A, FXD911A(GG), 940ASR 3.00 V-0 1:25 943 1.50 V-0 1:20 920A 3.00 V-0 1:25 1.50 V-2 1:25 Polycarbonate/ Acrylonitrile Butadiene Styrene (PC/ABS) C2950 1.50 V-0 6:100 C6200(GG) 2.00 V-0 1:20 Acrylonitrile Styrene Acrylate/ Polycarbonate (ASA/PC) HRA222 (GG) 0.80 V-2 1:20 UL94 V-0, V-1, V-2 SOLVAY OTHERS GENERIC RESIN TYPE SPECIFIC BASE RESIN MINIMUM THICKNESS (MM) FLAME RATING MAXIMUM LET-DOWN RATIO Polyphenyl Sulfone (PPSU) R-5100 (r1)(##), R-5000 (r1)(##) 1.50 V-0 1:10 Polyphthalamide (PPA) AFA-4133 V0(+) (*) 0.75 V-0 1:25 BASE RESIN MANUFACTURER GENERIC RESIN TYPE SPECIFIC BASE RESIN MINIMUM THICKNESS (MM) FLAME RATING MAXIMUM LET-DOWN RATIO ALBIS Polypropylene (PP) PP 13 CV2 14 1.50 V-2 1:25 AVIENT Polyvinylchloride (PVC) M3700(X), M3755(X) 1.50 V-0 1:25 M3900 1.50 V-0 1:25 CHI MEI Acrylonitrile Butadiene Styrene (ABS) PA-765(+) 1.50 V-0 1:10 Polycarbonate/ Acrylonitrile Butadiene Styrene (PC/ABS) PC-510(+) 1.50 V-0 1:25 EMS-CHEMIE Polyamide 6 (PA6) Grilon A 26 V0 0.75 V-0 1:25 FORMOSA Polycarbonate (PC) #1700+(f2) 0.36-0.42 V-2 1:50 GEON Polyvinylchloride (PVC) 85891(f1) 1.70 V-0 1:20 85891(f2) 1.70 V-0 1:20 M3700(X) 1.50 V-0 1:25 M3900 1.50 V-0 1:10 1:25 INEOS Polystyrene (PS) 855 HV 3.00 V-1 100:4 INVISTA Polyamide 66 (PA66) FRU4800 XHL (r1) 0.40 V-0 1:25 U4820L (r1) 0.40 V-2 1:25 UL94 V-0, V-1, V-2 OTHERS BASE RESIN MANUFACTURER GENERIC RESIN TYPE SPECIFIC BASE RESIN MINIMUM THICKNESS (MM) FLAME RATING MAXIMUM LET-DOWN RATIO KINGFA Polyamide 66 (PA66) PA66-R11G25 (##) 0.25 V-0 1:25 KURARAY Polyamide 9T (PA9T) GP2300S 0.40 V-0 1:25 LG CHEM Polycarbonate/ Acrylonitrile Butadiene Styrene (PC/ABS) LUPOY GP-5106-F 3.00 V-0 1:20 LOTTE CHEMICAL Acrylonitrile Butadiene Styrene (ABS) VH-0800(+) 1.50 V-0 1:25 Polycarbonate (PC) HN-1064(+) 0.75 V-2 1:10 1.50 V-0 1:10 1.20 V-1 1:10 Polystyrene (PS) VH-1800+ 3.00 V-0 1:25 1.50 V-0 1:25 MITSUBISHI Polycarbonate (PC) S-2000+(f1) 1.50-1.80 V-2 1:10 POLYMER PRODUCTS Polystyrene (PS) ZYNTAR 351 2.00 V-0 1:20 1.50 V-0 1:20 ZYNTAR 7000 2.00 V-0 1:25 ZYNTAR 702 2.00 V-0 1:25 8020 2.00 V-0 1:20 8120 2.00 V-0 1:20 8130 1.50 V-0 1:20 POLYMER RESOURCES Polycarbonate (PC) PC-FR1A-D, PC- FR2A-D, PC-FR3A-D 3.00 V-0 1:33 1.50 V-2 1:33 SUMITOMO Liquid Crystal Polymer (LCP) E6007LHF(ra) 0.30 V-0 1:25 E6007LHF-MR(gt) 0.20 V-0 1:12.5 UL94 V-0, V-1, V-2 OTHERS BASE RESIN MANUFACTURER GENERIC RESIN TYPE SPECIFIC BASE RESIN MINIMUM THICKNESS (MM) FLAME RATING MAXIMUM LET-DOWN RATIO TORAY Polyamide 6 (PA6) 1017 1.60 V-2 1:16.5 Polyamide 66 (PA66) 3004-V0(rr), CM3004-V0(rr) 0.40 V-0 1:25 TRINSEO Polycarbonate (PC) 891(w) 1.10 V-0 1:25 WELLMAN Polyamide 66/6 (PA66/6) 220-N, 21L-N, 22L-N 1.50 V-2 1:25 WESTLAKE Polyvinylchloride (PVC) 6597(f1), HF-6597(f1) 1.50 V-0 1:25 SP-7107 (f1)(a) 3.00 V-0 1:25 5VA AND 5VB BASE RESIN MANUFACTURER GENERIC RESIN TYPE SPECIFIC BASE RESIN MINIMUM THICKNESS (MM) FLAME RATING COLORS MAXIMUM LET-DOWN RATIO AVIENT Polyvinylchloride (PVC) M3900 1.50 5VB ALL 1:25 WHITE 1:10 COVESTRO Polycarbonate/ Acrylonitrile Butadiene Styrene (PC/ABS) FR3010 + (z) 3.00 5VA ALL 1:25 DUPONT Polyamide 66/6T (PA66/6T) FR95G25V0NH 1.50 5VA ALL 1:25 Polybutylene Terephthalate (PBT) LW9030FR 2.00 5VA BLACK 1:25 3.00 5VA ALL 1:25 SK642FR 1.50 5VA BLACK 1:25 GEON Polyvinylchloride (PVC) M3900 1.50 5VB ALL 1:25 WHITE 1:10 SABIC Polybutylene Terephthalate/ Polycarbonate (PBT/PC) V3900WX(GG)(f1)(IA), V3901WX(GG)(f1)(IA) 3.00 5VA ALL 1:20 1.844.4AVIENT www.avient.com Copyright © 2020, Avient Corporation.

The company noted that fourth quarter 2023 GAAP EPS includes $0.06 of special items (see Attachment 3) and $0.16 of intangible amortization expense (see Attachment 1). You are advised to consult any further disclosures we make on related subjects in our reports on Form 10-Q, 8-K and 10-K that we provide to the Securities and Exchange Commission. 5 Investor Relations Contact: Giuseppe (Joe) Di Salvo Vice President, Treasurer and Investor Relations Avient Corporation +1 440-930-1921 giuseppe.disalvo@avient.com Media Contact: Kyle G. NEWS RELEASE Attachment 1

S e e S p e c if ic I n s tr u c ti o n s o n p a g e 3 . 1 Name (as shown on your income tax return). The TIN provided must match the name given on line 1 to avoid backup withholding. Note: If the account is in more than one name, see the instructions for line 1.

& Canada EMEA Asia Latin America 64% 36% Specialty Engineered Materials Color Additives and Inks 41% 36% 18% 5% 7% 7% 23% 19% 9% 16% 10% 5% 4% Defense Healthcare Packaging Consumer Building & Construction Industrial Transportation Energy Telecom Geography Segment Industry 2024 Financial Guidance $525 to $530 million Adjusted EBITDA $2.63 to $2.67 Adjusted EPS 4 Industry Sustainability Standards ESG Ratings Performance 1 2 4 87th 94th percentile Avient CDP Score: A- SUSTAINABILITY PERFORMANCE AND RECOGNITION O C T O B E R 3 1 , 2 0 2 4 W E B C A S T P R E S E N TA T I O N 6 Q3 2024 HIGHLIGHTS • 8.5% organic sales growth driven by broad-based growth across all regions and most end markets in both CAI and SEM segments • Growth stemmed from gaining share, winning new product specifications and restocking in certain end markets • Both segments expanded YoY EBITDA margins by 40 bps each • Adjusted EPS of $0.65, an increase of 14% vs the prior year • Successfully refinanced $650M outstanding senior notes due 2025; extending maturity to 2031 • Increased dividend 5% to $1.08 on an annualized basis; 14th consecutive increase Adj. FX +8.5% FX -0.4% Total Avient +8.1% Note: Regional Sales Percentages exclude impact of foreign exchange COLOR, ADDITIVES & INKS SEGMENT ( Q 3 2 0 2 4 P E R F O R M A N C E V S Q 3 2 0 2 3 ) $487 $522 Q3 23 Q3 24 $89 $97 Q3 23 Q3 24 Sales Adjusted EBITDA (in millions) (in millions) Sales Adjusted EBITDA 10 + 7% (+8% excluding FX) + 9% (+11% excluding FX) 18.3% +40 bps *18.7% * * Adjusted EBITDA Margin % • Sales growth driven by winning new product specifications in consumer & packaging, strong underlying demand in healthcare and improving demand in building & construction • Favorable mix and raw material deflation contributed to EBITDA margin expansion SPECIALTY ENGINEERED MATERIALS SEGMENT ( Q 3 2 0 2 4 P E R F O R M A N C E V S Q 3 2 0 2 3 ) $268 $295 Q3 23 Q3 24 $51 $57 Q3 23 Q3 24 Sales Adjusted EBITDA (in millions) (in millions) Sales Adjusted EBITDA 11 • Sales growth driven by restocking in healthcare & consumer end markets and strong underlying demand for composite applications used in building & construction, energy and defense end markets • Favorable mix contributed to EBITDA margin expansion + 10% (+10% excluding FX) + 12% (+13% excluding FX) 19.0% +40 bps *19.4% * * Adjusted EBITDA Margin % 2 0 2 4 G U I D A N C E FY 20 24 GUIDA NC E Previous (Aug 6) Current Adjusted EPS $2.55 to $2.70 $2.63 to $2.67 Adjusted EBITDA $515 to $540 million $525 to $530 million Interest Expense $105 million $104 million Adjusted Effective Tax Rate 23% to 25% 23% to 25% Capital Expenditures & Investment in S/4 Hana ~$140 million ~$140 million 13 14 • Investor Day to be held 2024年12月4日 at the NYSE, beginning at 10AM • The focus will be to do a deep dive on the Company’s strategy • Registration available at www.avient.com/investors 20 24 AVI ENT INVESTOR DAY A P P E N D I X 17 Performance Additives 15% Pigments 13% TiO2 9% Dyestuffs 2% Polyethylene 10%Nylon 5% Polypropylene 4% Styrenic Block Copolymer 4% Other Raw Materials 38% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials RA W MATERI AL BA SKET SEGMENT DATA U.S. & Canada 41% EMEA 36% Asia 18% Latin America 5% 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS Consumer 19% Packaging 23%Industrial 16% Building and Construction 9% Telecommunications 4% Energy 5% Defense 7% END MARKET REVENUE $2,007M $358M $1,138M $224M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $502M$3,143M (1) Transportation 10% Healthcare 7% 19 (1) Total company sales and adjusted EBITDA of $3,143M and $502M, respectively, include intercompany sales eliminations and corporate costs 2 0 2 3 R E V E N U E | $ 2 . 0 B I L L I O N US & Canada 34% EMEA 37% Asia 21% Latin America 8% END MARKET REGION 20 Packaging 34% Consumer 21% Healthcare 8% Industrial 15% Transportation 9% Building & Construction 10% Telecommunications 1% Energy 2% COLOR , AD DI TI VES & INKS 2 0 2 3 R E V E N U E | $ 1 . 1 B I L L I O N US & Canada 52% EMEA 35% Asia 13% 21 Packaging 5% Consumer 16% Healthcare 6%Industrial 16% Transportation 12% Telecommunications 9% Energy 10% Defense 18% Building & Construction 8% END MARKET REGION SPEC IA LTY ENGI NEER ED MATERI ALS Packaging 32% Consumer 26% Healthcare 9% Industrial 13% Building & Construction 6% Telecommunications 2% Energy 2% Defense 1% Asia (18% of sales) Transportation 9% 2 0 2 3 AV I E N T R E G I O N A L S A L E S Packaging 25% Consumer 13% Healthcare 5% Industrial 18% Building & Construction 9% Energy 5% Defense 8% EMEA (36% of sales)Transportation 13% Packaging 13% Consumer 22% Healthcare 10% Industrial 16% Building & Construction 12% Energy 6% Defense 8% US & Canada (41% of sales) Transportation 9% Packaging 59% Consumer 22% Healthcare 2% Industrial 8% Building & Construction 4% LATAM (5% of sales) Transportation 5% Telecommunications 4% Telecommunications 4% 22 B Y E N D M A R K E T Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) Senior management uses comparisons of adjusted net income from continuing operations attributable to Avient shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to Avient shareholders, excluding special items, to assess performance and facilitate comparability of results. Three Months Ended 2024年9月30日 2023 Reconciliation to Condensed Consolidated Statements of Income $ EPS(1) $ EPS(1) Net income from continuing operations attributable to Avient shareholders $ 38.2 $ 0.41 $ 5.1 $ 0.06 Special items, after-tax 6.6 0.07 32.0 0.35 Amortization expense, after-tax 15.0 0.16 15.2 0.16 Adjusted net income / EPS $ 59.8 $ 0.65 $ 52.3 $ 0.57 (1) Per share amounts may not recalculate from figures presented herein due to rounding Three Months Ended September 30, Reconciliation to EBITDA and Adjusted EBITDA: 2024 2023 Net income from continuing operations – GAAP $ 38.7 $ 5.1 Income tax expense (benefit) 11.3 (0.1) Interest expense, net 26.9 30.3 Depreciation & amortization 45.1 46.4 EBITDA from continuing operations $ 122.0 $ 81.7 Special items, before tax 9.7 43.2 Interest expense included in special items (1.3) (2.2) Depreciation & amortization included in special items (0.4) — Adjusted EBITDA $ 130.0 $ 122.7 Adjusted EBITDA as a percent of sales 15.9 % 16.3 % 1 Three Months Ended 2024年9月30日 2023 Sales: Color, Additives and Inks $ 521.5 $ 486.5 Specialty Engineered Materials 294.6 267.9 Corporate (0.9) (0.7) Sales $ 815.2 $ 753.7 Operating income: Color, Additives and Inks $ 75.5 $ 64.5 Specialty Engineered Materials 36.4 30.3 Corporate (34.7) (60.5) Operating income $ 77.2 $ 34.3 Depreciation & amortization: Color, Additives and Inks $ 21.9 $ 24.6 Specialty Engineered Materials 20.7 20.5 Corporate 2.5 1.3 Depreciation & amortization $ 45.1 $ 46.4 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 97.4 $ 89.1 Specialty Engineered Materials 57.1 50.8 Corporate (32.2) (59.2) Other (expense) income, net (0.3) 1.0 EBITDA from continuing operations $ 122.0 $ 81.7 Special items, before tax 9.7 43.2 Interest expense included in special items (1.3) (2.2) Depreciation & amortization included in special items (0.4) — Adjusted EBITDA $ 130.0 $ 122.7 Adjusted EBITDA as a percent of sales: Color, Additives and Inks 18.7 % 18.3 % Specialty Engineered Materials 19.4 % 19.0 % 2 Year Ended 2023年12月31日 Reconciliation to Condensed Consolidated Statements of Income $ EPS Net income from continuing operations attributable to Avient shareholders $ 75.8 $ 0.83 Special items, after-tax 79.3 0.86 Amortization expense, after-tax 61.5 0.67 Adjusted net income / EPS $ 216.6 $ 2.36 Adjusted Free Cash Flow Calculation 2023年12月31日 Cash provided by operating activities $ 201.6 Capital expenditures (119.4) Free cash flow 82.2 Taxes paid on gain on sale of business 104.1 Adjusted free cash flow $ 186.3 Year Ended 2023年12月31日 Sales: Color, Additives and Inks $ 2,007.4 Specialty Engineered Materials 1,138.2 Corporate (2.8) Sales $ 3,142.8 Operating income: Color, Additives and Inks $ 259.9 Specialty Engineered Materials 142.5 Corporate (205.6) Operating income $ 196.8 Depreciation & amortization: Color, Additives and Inks $ 98.3 Specialty Engineered Materials 81.5 Corporate 9.0 Depreciation & amortization $ 188.8 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 358.2 Specialty Engineered Materials 224.0 Corporate (196.6) Other income, net 5.8 EBITDA from continuing operations 391.4 Special items, before tax 114.6 Interest expense included in special items (2.3) Depreciation & amortization included in special items (1.9) Adjusted EBITDA $ 501.8 Adjusted EBITDA as a percent of sales 16.0 % 3 Avient M11 Investor Presentation.pdf IR Deck - AVNT-2024.09.30 (M11) - 11.05.24 11AM.pdf Attachment

Certificate of Registration 9001:2015 MSP 9001:2015–MSP-ANAB-US (2.0) Page 1 of 2 Certificate of Registration of Quality Management System to ISO 9001:2015 The National Standards Authority of Ireland certifies that: Colorant Chromatics Ab Kroklundsvagen 346 AX-22 320 Odkarby Aland Finland has been assessed and deemed to comply with the requirements of the above standard in respect of the scope of operations given below: The Design, Manufacture and Sales of Fluoropolymer Color Concentrates and Compounds Additional sites covered under this multi-site certification are listed on the Annex (File No. 19.2540/C) Approved by: Geraldine LarkinChief Executive Officer Approved by: Lisa Greenleaf Operations Manager Registration Number: 19.2540/C Certification Granted: 1997年5月15日 Effective Date: Oct 20, 2018 Expiry Date: Oct 19, 2021 National Standards Authority of Ireland, 20 Trafalgar Square, Nashua, New Hampshire, NH 03063, USA T +1 603 882 4412 9001:2015–MSP-ANAB-US (2.0) Page 2 of 2 Annex to Certificate Number: 19.2540/C Scope of Registration: The Design, Manufacture and Sales of Fluoropolymer Color Concentrates and Compounds Activity Location Central Management Group, Design, Manufacture Colorant Chromatics Kroklundsvagen 346 AX-22 320 Odkarby Aland Finland File No.: 19.2540/C Headquarters, Sales, Distribution Colorant Chromatics Europe B.V. Hastelweg 269 - 273 NL-5652 CV Eindhoven The Netherlands File No.: 19.2540/B Sales, Distribution Colorant GmbH Justus-Staudt-Strasse 1 Limburg-Offheim Germany 65555 File No.: 19.2540/A Design, Manufacture, Sales, Distribution Chromatics, Inc. 19 Francis J.

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