reSound™ REC post-industrial recycle (PIR) and post-consumer recycle (PCR) TPEs help brand owners create sustainable end-user products, with formulations utilizing 9-83% recycled content. 9-83% recycled content These grades are formulated with 9-39% PCR content from recycled food packaging and are suitable for PP OM.

The wall thickness (W) for ribs and bosses should be 75% of the nominal wall (.75W). The outside round should be the inside radius plus wall thickness (IR + W). CHAPTER 3 | PART DESIGN GUIDELINES Wall Thickness (mm) C o o li n g T im ( S c ) 40 35 30 25 20 15 10 0 1 2 3 4 ABS PC Nylon 6/6 Figure 2 - Designing for Wall Thickness Changes Bad Better Recommended Recommended Poor High Stress Ideal Figure 3 - Internal and External Radius Guidelines .5W Min Inside Rad + W Poor High Volume FIGURE 1 - Wall thickness vs. cooling time of various plastics FIGURE 2 - Designing for wall thickness changes FIGURE 3 - Internal and external radius guidelines Design Guide 9 RIB DESIGN GUIDELINES The minimum distance ribs should be spaced is three times the nominal wall thickness (3W).

NYSE: AVNT) AVIENT CORPORATION S P E C I A LT Y P O R T F O L I O T R A N S F O R M AT I O N C O N T I N U E S W I T H D Y N E E M A A C Q U I S I T I O N 2 0 2 2 F I R S T Q U A R T E R R E S U LT S DISCLAIMER 2 Forward-Looking Statements In this presentation, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Morgan • New Senior Secured Term Loan B and new Senior Unsecured Notes • Potential proceeds from sale of Distribution business modeled to pay off 5.25% senior notes due 2023 and Term Loan • Acquisition aligned with Avient’s track record of disciplined capital allocation policy • Existing dividend policy maintained, focus on deleveraging in the near term (1) Pro forma for the acquisition of Dyneema® and potential divestiture of Distribution, including repayment of senior notes due 2023 and Term Loan Cash and Cash Equivalents 595$ Senior Secured Term Loan due 2026 605$ New Senior Secured Term Loan B 500 Total Senior Secured Debt 1,105$ Senior Unsecured Notes due 2025 650$ New Senior Unsecured Notes 740 Total Senior Unsecured Debt 1,390$ Total Debt 2,495$ Net Debt 1,900$ 2022 Pro forma Adjusted EBITDA 660$ Net Debt / Adjusted EBITDA 2.9x Pro Forma Capitalization (2022 estimates, all figures in $M) TWO-YEAR LEVERAGE GOAL 24 3.5x 2.7x 1.7x 2.9x 2.5x 2.2x 2019PF 2020PF 2022E 2022PF 2023E 2024E Dyneema® AcquisitionClariant Color Acquisition (1) Pro forma for the acquisition of the Clariant Color business (2) Pro forma for the acquisition of Dyneema® and potential divestiture of Distribution, including repayment of senior notes due 2023 and Term Loan (1) (1) (2) 25 PRO FORMA MODELING 2022E Pro Forma Pro Forma ($M) w/ Dyneema w/Sale Revenue 5,100$ 415$ 5,515$ (1,775)$ 3,740$ Adjusted EBITDA 635 130 765 (105) 660 EBITDA % 12% 31% 14% 6% 18% Pro Forma EPS (Adjusted) 3.50$ 0.00$ 3.50$ (0.56)$ 2.94$ Pro Forma EPS (excl. amortization) 3.96$ 0.35$ 4.31$ (0.56)$ 3.75$ Leverage (12/31/2022E) Net Debt / Adjusted EBITDA 1.7x 3.5x 2.9x Avient Dyneema Distribution® ® OUR SPECIALTY JOURNEY ACQUISITION HISTORY 27 Commercial Resources(1) Operating Margins 259 360 $40 $122 9% 21% Established Acquisitions (> 7 years) + 39% + 210% + 1200 bps (1) Commercial Resources include associate headcount in R&D / Technical, Marketing and Sales CLARIANT COLOR ACQUISITION 28 $133 $205 2019PF 2021 28 Clariant Color EBITDA Growth Purchase Price Multiple 10.8x 7.0x 6.1x 2019PF 2021 2021 w/ Full Synergies • Acquisition of Clariant Color business significantly expanded presence in healthcare, packaging and consumer end markets • Strength of portfolio – double-digit annual EBITDA growth since acquisition • $54 million of synergies realized in 2021 • Acquisition completed on July 1, 2020 for $1.45 billion. Purchase price multiple rapidly declining on strength of business and synergy capture (1) Financial information is pro forma to include a full year of Clariant Color acquisition 11.9% 16.2% 2019PF 2021 EBITDA Margins SPECIALTY TRANSFORMATION 7% 46% 66% 86% 100% 0% 20% 40% 60% 80% 100% 2005 2010 2015 2021 2022 PF % o f A dj us te d EB IT D A(1 ) JVs Distribution Performance Products & Solutions Specialty (1) Adjusted EBITDA is EBITDA excluding corporate costs and special items (2) Pro forma for the acquisition of Dyneema® and potential divestiture of Distribution (2) 29 12% 18% 16% 15% 15% 14% 14% 28% 28% 26% 25% 22% 21% 19% 16% 12% 9% 9% Av ie nt T od ay Av ie nt P F AV Y PP G KW FU PM C E AL B FM C AS EC EM XL U SC BN U VR Median: 21%Median: 15% 2022 EBITDA MARGINS VS.

December 9, 2024 CLEVELAND – December 9, 2024 – Avient Corporation, a premier provider of specialty and sustainable materials solutions and services, announces the addition of flame-retardant (FR) grades manufactured without intentionally added PFAS-based raw materials to its portfolio of Complēt™ PKE Long Fiber Reinforced Polyketone Thermoplastics.

The new offerings for 2017 include: •    Wilflex One™ Special Effects – additions of shimmers, glitter, particle base, phosphorescent and foil adhesive to this non-PVC range •    Wilflex™ Elements – a new tactile selection book featuring the primary EPIC™ ink technologies, colors and finishes •    Wilflex Originals – latest design number 9 featuring a 1961 Eldorado Cadillac, created to mark the Wilflex 55th Anniversary celebrated at the end of 2016 •    Oasis™ Imagebrite Reflectives – This brand new water-based reflective ink, containing light reflecting microspheres, will be exclusively previewed at the show. Photo Caption: Wilflex Originals Design n.9 - Cadillac

October 9, 2023 FRIEDRICHSHAFEN, Germany – October 9, 2023 – Avient Corporation, a leading provider of specialized and sustainable material solutions and services, announced its latest offering, Stat-Tech™ TPE Static Dissipative & Electrically Conductive Thermoplastic Elastomers (TPEs), which will be launched at the upcoming Fakuma International Trade Fair for Plastics Processing.

October 9, 2023 FRIEDRICHSHAFEN, Germany – October 9, 2023 – At next week’s 28th Fakuma International Trade Fair for Plastics Processing, Avient Corporation will exhibit its latest innovations, providing sustainable and specialized material solutions for the plastics industry.

February 9, 2016 PolyOne is exhibiting at MD&M West in Anaheim, California, in booth 848 from February 9 – 11, 2016.

TPV COOL GREY 9 HDPE COOL GREY 9

PS RED #9 BLACK #9-2