Slide 1 PolyOne Corporation Page 1 PolyOne Investor Presentation R.W. PolyOne Corporation Page 3 Use of Non-GAAP Measures  This presentation includes the use of both GAAP (generally accepted accounting principles) and non-GAAP financial measures. In addition, operating income before special items and adjusted EPS are components of various PolyOne annual and long-term employee incentive plans

The case study shows that by utilising the 3D suite simulation and comparing to real-world testing, Avient is equipped to more accurately interpret the data to help solve its customers’ toughest application challenges

Microsoft Word - Polyone Barbastro_ISO 14001_2015_EXP 2021_0.docx ABS Quality Evaluations Certificate Of Conformance This is to certify that the Environment Management System of: PolyOne España SL Sociedad Unipersonal Pol.

PolyOne makes no warranties or guarantees respecting suitability of either PolyOne’s products or the information for your process or end-use application. POLYONE MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, either with respect to the information or products reflected by the information. PROPERTY TEST METHOD NOMINAL VALUE Specific Gravity (25/25°C) ASTM D-891 0.950–0.956 Acid Number (mg KOH/g) AOCS Cd 3d-63 < 1.00 Appearance ASTM D-2090 Clear Color (Pt-Co Scale) ASTM D-1209 < 100 Molecular Weight – Theoretical, approximate 316 Oxirane Content (wt%) AOCS Cd 9-57 > 6.4 Water Content (wt%) ASTM E-1064 < 0.15 TECHNICAL PROPERTIES To learn more about SynPlicity™ 1000 Cosmetic Ester, contact PolyOne at 1.866.POLYONE (1.866.765.9663)

Investor Day POLYONE I N V E S T O R P R E S E N T A T I O N M A R C H 2 0 1 8 FORWARD LOOKING STATEMENTS PolyOne Corporation 2 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 PolyOne investor presentation Forward Looking Statements USE OF �NON-GAAP�MEASURES Vision PolyOne�2017 Revenue | $3.2 billion Adjusted EPS Expansion Early years defined by Specialty �mix improvement Proof of Performance & Platinum Vision Investment in Commercial Resources driving growth Slide Number 10 Returning cash to shareholders�Over $950 million since 2011 3 Horizons of Development Innovation Pipeline IQ DESIGN LABS LSS CUSTOMER FIRST Why Invest In PolyOne?

At PlastIndia 2018, Avient exhibited under its former name, PolyOne. PlastIndia has grown into a global experience, covering the entire gamut of plastics producers, processors, and users of plastics, and it witnesses intense participation by both the Indian and International Plastics Fraternity.

POLYONE V1847 BIO NATURAL PVC PolyOne DB5548 Red NP (P542) PolyOne DB5549 Trans Green NP

FRIEDRICHSHAFEN, Germany – October 15, 2024 – Avient Corporation will exhibit its latest sustainable and specialized materials solutions and services for the plastics industry, including two new product launches, at the 29th Fakuma International Trade Fair for Plastics Processing, held today through October 19, 2024. PTFE-Free LubriOne™ Internally Lubricated Formulations: additional grades that extend Avient’s LubriOne™ Formulations portfolio and are made without fluorinated lubricants such as polytetrafluoroethylene (PTFE), which may be classifiable as a per-and polyfluoroalkyl substance (PFAS). They are available across multiple polymer systems, including PA6, PA66, PC, POM, PBT, PPS, and PK, and provide comparable performance to conventional internally lubricated grades (link to full press release here).

Toxic Substances Control Act (TSCA), International Agency for Research on Cancer (IARC) and California Prop 65 amongst others. International standards cover areas of Quality, Environmental, Health and Safety, Automotive, Medical Device, Responsible Care® and Energy Management. Manufacturing Sites Certified to an International Standard

PolyOne’s industry-leading portfolio of engineered composite panels offers a solution to these challenges. PolyOne engineered composite panels can be tailored to your design and performance specifications. PolyOne makes no warranties or guarantees respecting suitability of either PolyOne’s products or the information for your process or end-use application.