PolyOne’s chief operating decision maker uses these financial measures to monitor and evaluate the ongoing performance of the Company and each business segment and to allocate resources. It’s in this spirit that we joined legacy PolyOne and the Clariant Masterbatch business, two complementary businesses, and formed a new one that we’ve named Avient. As a result, revenue from sustainable solutions has increased at an organic compounded annual growth rate of 9% from 2016-2019.

Vice President and General Manager — Americas Compounding and Performance Additives, Excel Polymers, March 2009 to November 2009. POLYONE CORPORATION 21 ITEM 7. Franklin-Burlington), operated a plastic resin compounding facility in Kearny, New Jersey, located adjacent to the Passaic River.

LoC No: 798019/2023 Page 1 of 1 Letter of Conformity Good Manufacturing Practices — Guidelines The Letter of Conformity is granted to Polyone Polymers India Private Limited Plot No.

Cesa™ WithStand™ SX Low Haze Antimicrobial Additives PRODUCT BULLETIN Cesa™ WithStand™ SX Low Haze Antimicrobial Additives counteract bacteria, fungi, and microbes to enhance the performance of clear polycarbonate or plexiglass applications that require visual clarity. KEY CHARACTERISTICS • Patented next-gen formulation that can preserve visual clarity and aesthetics in applications using recycled content • Reduces bacterial, mold, and fungal growth on the surface and through the thickness of the plastic part • Helps reduce odor, staining, discoloration, and loss of mechanical properties • Available for various processes including extrusion, injection molding, blow molding, rotational molding, and thermoforming MARKETS & APPLICATIONS These antimicrobial additives are well-suited for clear polycarbonate or plexiglass applications using recycled resin including: • Electronics • Packaging • Consumer goods • Protective shields and sneeze guards • Plexiglass windows or panels • Clear phone or tablet cases • Modular office construction • Point-of-purchase screens • Touchscreen information kiosks • Transportation infotainment screens 1.844.4AVIENT www.avient.com Copyright © 2025, Avient Corporation.

Avient Corporation Avient Corporation HQ Certificate No: 65536 Certification Date: 29 September 2023 CORPORATE SUPPORT ACTIVITIES, DESIGN, MANUFACTURE AND DISTRIBUTION OF COLOUR AND ADDITIVE CONCENTRATES, THERMOPLASTIC RESINS AND PELLETS, SPECIALTY COMPOUNDS AND COLORANTS. Avient Corporation HQ Design and manufacture of colorants, compounds, and additive concentrates. 65536-95395Certificate No: Page 3 of 53 ABS Quality Evaluations, Inc. 1701 City Plaza Drive, Spring, TX 77389, U.S.A. Ezcabarte calle H Nº3 Oricain, Navarra 31194 Manufacture of Masterbatches, Additives, ECCOH, and Compounds for Pigmenting Thermoplastic 65536-116899Certificate No: Page 36 of 53 ABS Quality Evaluations, Inc. 1701 City Plaza Drive, Spring, TX 77389, U.S.A.

Compared to those alternative materials, Versaflex TF TPEs also do not include plasticizers, and contain lower volatile organic compounds (VOC) than traditional adhesive solutions, reducing concerns over toxicity. Non-toxic formulations with low volatile organic compounds (VOC) and without added plasticizers

PolyOne Corporation Investor Day 2012 PolyOne Investor Presentation Bank of America Merrill Lynch 2013 US Basic Materials Conference December 11, 2013 • 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. In addition, operating income before special items and adjusted EPS are components of various PolyOne annual and long-term employee incentive plans Average Debt Q3 2012 Q4 2012 Q1 2013 Q2 2013 Q3 2013 Average PolyOne Debt $ 705.2 $ 706.9 $ 1,055.5 $ 1,031.2 $ 987.7 $ 897.3 Average Equity Q3 2012 Q4 2012 Q1 2013 Q2 2013 Q3 2013 Average PolyOne shareholders’ equity $ 629.3 $ 629.1 $ 871.8 $ 993.9 $ 996.6 $ 824.1 Reconciliation to Condensed Consolidated Balance Sheets YTD 2013 Short-term debt and current portion of long-term debt $ 9.9 Long-term debt 977.8 Less cash and cash equivalents (322.8) Net debt $ 664.9 Adjusted EBITDA Q4 2012 Q1 2013 Q2 2013 Q3 2013 Total PolyOne Income before income taxes $ (1.1) $ 15.7 $ 62.9 $ 38.8 $ 116.3 PolyOne Interest expense, net 13.7 15.6 16.6 16.0 61.9 PolyOne Depreciation and amortization 15.5 19.0 25.8 30.3 90.6 PolyOne Special items in EBITDA 26.5 27.7 (5.2) 11.2 60.2 PolyOne Adjusted EBITDA 54.6 78.0 100.1 96.3 329.0 Pro forma Spartech EBITDA 14.7 11.2 - - 25.9 Pro forma EBITDA $ 69.3 $ 89.2 $ 100.1 $ 96.3 $ 354.9 PolyOne Investor Presentation��Bank of America Merrill Lynch�2013 US Basic Materials Conference�December 11, 2013� Forward – Looking Statements Use of Non-GAAP Measures Strategy and Execution Drive Results Four Pillar Strategy PolyOne�At A Glance Mix Shift Highlights Specialty Transformation Proof of Performance & 2015 Goals Innovation Drives Earnings Growth We are Experts in Polymer Science and Formulation Positioned for Strong Growth Q3 2013 Financial Highlights Debt Maturities & Liquidity Summary – 9/30/13 Use of Cash Why Invest In PolyOne?

T314.0 NP-20 COMPOUND 6% BASO4 T325.3 NP-120 COMPOUND PRECOL ORANGE T333.8 NP-20 COMPOUND 10% BASO4 COOLGREY

T377.6 FEP NP-20 COMPOUND 10% BASO4 BLUE T382.0 NP-20 COMPOUND 8% BASO4 T411.1 NP-101 COMPOUND PRECOL BROWN