Avient corporation first quarter 2024 results and 2024 financial guidance AVIENT CORPORATION F I R S T Q U A R T E R 2 0 2 4 R E S U L T S A N D 2 0 2 4 F I N A N C I A L G U I D A N C E (NYSE: AVNT) M AY 7 , 2 0 2 4 DISCLAIMER Forward-Looking Statements Certain statements contained in or incorporated by reference into this presentation constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. For the same reasons, Avient is unable to address the probable significance of the unavailable information. 2 O P E N I N G RE MARK S 4 REGIONAL DEMAND TRENDS-TOTAL COMPANY Q 1 S A L E S V S P Y ( E X C L U D I N G F X ) 4 +2% -6% Flat +2% Avient ex. FX -1.5% FX -0.5% Total Avient -2.0% Q 1 2024 RE S U LT S Q1 2024 PERFORMANCE VS.

The typical width of this gate is 1–4 times the wall thickness. Gate Freeze Time = 4 seconds, 4+1 = 5, Hold Time = 5 seconds • Figure 45 shows an example of the gate freeze study. The modulus of steel is 3 x 107 psi

METALLIC WARM SILVER 3 X HC 268479#SR-25898-3 Green X HC 268479#SR-25899-4 Purple

TEAL 3 PC X ET103591#SR-03573-0001-4 Aluminum X ET103591#SR-03573-0002-4 Aluminum

X TM 260705#SR-24666-6 Pewter Conc 4% X ET #SR-30392-3 LM Blue Met Conc X ET #SR-30392-4 Blue Met Control

X GV 179969#SR12499-1 Silver X GV 179969#SR12499-3 Silver X GV 179969#SR12499-4 Black

X 44491-0001A-01-3 X 44491-0001B-01-3 X 44491-0001B-01-4

UV FL YELLOW 1 Geon(TM) FK121 Black 3/4" Antifatigue Foam BLUE T505-2-4

X MX-3483-001-1 Natural X MX-3483-001-3 Natural X MX-3483-001-4 Natural

Abrasion  Ultraviolet (UV) Flame (Acid (Alkali) (Organic Solvent) Strength Retention (H2O) P X P P P P P Property UOM Value Breaking Tenacity g/d 28 Specific Gravity Ratio 1.39 Elongation @ Break % 4.6 Tensile Modulus g/d 590 Moisture Regain* % 2.0 Creep** % < 1.5 Shrinkage*** % < 0.1 Melt Point °C N/A Decomposition Temp. TECHNORA® TECHNORA® DATA Standard Modulus * Equilibrium moisture regain @ 55% RH ** Creep @ 40%-58% ultimate tensile strength *** Shrinkage in dry air @ 177 C for 30 minutes  LOCATIONS Headquarters, R&D, Manufacturing FIBER-LINE® LLC 3050 Campus Drive Hatfield, PA 19440 +1 215.997.9181 fiber@fiber-line.com Manufacturing Operations FIBER-LINE® LLC 280 Performance Drive SE Hickory, NC 28602 +1 828.326.8700 fiber@fiber-line.com EMEA & Asia Pacific Operations FIBER-LINE® INTERNATIONAL B.V. Uranusweg 3 8938 AJ Leeuwarden The Netherlands +31(0) 58 216 75 99 info@fiber-line.com NOTICE: The information and data contained herein do not constitute sales specifications.