– February 4, 2019 – At Medical Design and Manufacturing (MD&M) West this week, PolyOne is highlighting its extensive portfoli February 4, 2019

Increase injection rate 4. Use smaller barrel 4. Decrease shot size 4.

Streamlined organization with fewer business units to reduce internal complexity and better serve customers 1 2 3 4 Specialty Engineered Materials SEGMENT STRATEGIC REVIEW Chris Pederson AVIENT INVESTOR DAY December 4, 2024 Copyright © . Drive COGS reduction - raw material actions, manufacturing, supply chain optimization 1 2 3 4 Summary and financials Jamie Beggs AVIENT INVESTOR DAY December 4, 2024 Copyright © . All Rights Reserved 2024 61 History of balanced capital deployment $0 .1 6 $0 .2 0 $0 .2 6 $0 .3 4 $ 0. 42 $0 .5 0 $ 0. 58 $0 .7 2 $0 .7 9 $0 .8 2 $0 .8 8 $0 .9 6 $1 .0 0 $1 .0 3 $1 .0 8 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 Dividend $ per shareAdj.

X ST5871-001-03 X ST5871-001-02 EDDY HANDLE 4 GREY 428 2ND SHOT

X MF-16100-003-4 Black X 15663-002-1 Black X 15663-002-2 Black

USES & APPLICATIONS FOAM CORE PANELS Core Density 5 lb/ft3 8 lb/ft3 80 kg/m3 130 kg/m3 Panel Thickness 0.5 inch 0.75 inch 1.0 inch 0.5 inch 0.75 inch 1.0 inch 13mm 19mm 25mm 13mm 19mm 25mm Facesheet Configuration 5848 Quad-Ply 5848 Quad-Ply Property Test Method Unit Areal Weight Calculated lb/ft2 kg/m2 0.83 4.05 0.93 4.54 1.04 5.08 0.96 4.69 1.13 5.52 1.31 6.40 Flexural Strength ASTM D7249 psi MPa 104 0.72 112 0.77 102 0.70 168 1.16 171 1.18 172 1.19 Flexural Modulus ASTM D7249 psi MPa 834,000 5,750 605,000 4,171 375,000 2,586 889,000 6,129 672,000 4,633 481,000 3,316 Flexural Rigidity ASTM D7249 lb*in2 kN*mm2 33,000 95,000 64,000 183,000 100,000 286,000 42,000 120,000 71,000 203,000 126,000 361,000 TRUCK & RV • Ceilings • Cabinetry • Load floors • Sidewalls • Aerodynamic components BUILDING & CONSTRUCTION • Modular panels for temporary structures • Garage & industrial doors • Walls & flooring RAIL • Doors • Flooring • Interior panels MARINE • Stringers • Bulkheads • Ceilings & decking • Doors & cabinetry HONEYCOMB CORE PANELS Core Density 5 lb/ft3 80 kg/m3 Panel Thickness 0.5 inch 1.0 inch 13mm 25mm Facesheet Configuration 6536 X-Ply 6536 Tri-Ply 6536 X-Ply 6536 Tri-Ply Property Test Method Unit Areal Weight Calculated lb/ft2 kg/m2 0.49 2.39 0.63 3.08 0.63 3.08 0.8 3.91 Flexural Strength ASTM D7249 psi MPa 33 0.23 82 0.57 46 0.32 97 0.67 Flexural Modulus ASTM D7249 psi MPa 418,000 2,882 693,000 4,778 265,000 1,827 368,000 2,537 Flexural Rigidity ASTM D7249 lb*in2 kN*mm2 15,000 43,000 27,000 77,000 41,000 117,000 75,000 215,000 SUPPORT SPAN DEFLECTION Meets performance required for marine applications Predictive deflection in various load cases. Example: Deflection for 24 inch panel = Chart value *[12 / 24] Performance Comparison Hammerhead Panels and Marine Plywood INSTALLATION INSTRUCTIONS ∠Θ° CUTTING & DRILLING Recommended blade: Industrial fine cut-off saw blade, 10" x 80 teeth 38° ATB grind with 5/8" bore, PTFE coating Recommended router bits: 3/8" diameter, 4 flute TiAlN (titanium aluminum nitride) coated carbide bit PANEL SHAPING • Determine bend angle • Cut relief • Heat core to softening point • Bend, hold, and cool • Glue joint for added strength FINISHING Gel coat finish is possible with minimal surface preparation. Reference to them does not indicate any affiliation with or endorsement by them. 1 surface sanded with 220 grit scuff prep 2 surface primed with 459T For more information on installation, adhesives, and fasteners for specific applications, please contact Avient.

KONSTANTYNÓW ŁÓDZKI, kod 95-050, poczta KONSTANTYNÓW ŁÓDZKI, kraj POLSKA 3.Adres poczty elektronicznej ­­­­­­ 4.Adres strony internetowej ­­­­­­ Rubryka 3 ­ Oddziały Brak wpisów Rubryka 4 ­ Informacje o umowie 1.Informacja o zawarciu lub zmianach umowy spółki 1 UMOWA SPÓŁKI Z 6.02.1991 R, NOTARIUSZ GABRIELA SPECHT, PAŃSTWOWE BIURO NOTARIALNE W ŁODZI, REP. A NR 989/2002 - ZMIENIONO §§ 4; 7 UST. 1, 2, 5; 9 UST. 2, 3, 4; 11 UST. 2, 5; 11A UST. 4; 12 UST. 2; 13 UST. 2; 17 UST. 2 UMOWY SPÓŁKI; 2 20.01.2010 R , REP. A NR 18738/2012 - ZMIENIONO §4, DODANO §3 UST. 3 ORAZ ZMIENIONO §11 UST. 5 UMOWY SPÓŁKI. 5 AKT NOTARIALNY Z DNIA 11.06.2012 R., REP.

X S100A P-1 X DP-9156-5-8000 F-6 SILCOPAS SURF 4 BEIGE

X TT-1241-001-1 X THC-02 DP 9162-4 X THC-02 DP 9162-5

X ET 5200-0001 Olive Green Conc 4% 11205-001-1 TT-1095A X GT-12009-1B