Governance and Corporate Responsibility Charter Proposed Revisions March 2025 Final and Approved.pdf AVIENT CORPORATION GOVERNANCE AND CORPORATE RESPONSIBILITY COMMITTEE CHARTER Membership The Governance and Corporate Responsibility Committee (the “Committee”) of the Board of Directors (the “Board”) of Avient Corporation (the “Company”) will consist entirely of directors who meet the definition of “independent” as set forth in the Corporate Governance Standards of the New York Stock Exchange. Review the continued appropriateness of Board membership of non-employee directors who significantly change their principal business or professional responsibility outside of the Company and submit a conditional letter of resignation to the Board and determine whether the resignation will be accepted. Consider the resignation of an incumbent director who receives a greater number of votes “withheld” from his or her election than votes “for” his or her election in an election of directors that is not a contested election and recommend to the Board whether to accept or reject it, as provided in the Company’s Corporate Governance Guidelines.

Diversity & Inclusion: Leading Change from the Top “I’m proud to work for a company whose core values reflect a strong commitment to diversity and inclusion. Avient has always been a veteran friendly company and we wanted to formalize that by bringing those who have served their countries and communities together with those who have supported them. Those who file reports can remain anonymous.

CONTAINER OEM S T O C K T A N K • Reduce container weight • Optimize throughput and provide internal training to sustain processing optimization • Minimize scrap • Improve surface appearance • Deployed an experienced field technician who was able to reduce tank weight by 30% through processing adjustments • Provided an additional lightweighting opportunity with an optimized gas / chemical foaming agent (CFA) process • Trained customer on CFA processing and collaborated to create a new CFA offering for further optimization • Made adjustments resulting in lower scrap rates and improved part appearance Dedicated Onsite Field Technical Service KEY REQUIREMENTS WHY AVIENT?

PET is therefore a popular choice for businesses who want an eco-friendly plastic that can be recycled again and again. These pellets are sent to manufacturers who reheat the pellets, then form the material into the size and shape needed for their products. However, there is still question who should pay for these investments— federal and state governments, businesses or consumers.

Cesa Nox A4R is formulated to help: • Brand owners who need to maximize their PCR usage up to 100% to achieve sustainability and recyclability targets • Recyclers involved with flake or pellets dealing with multiple processing defects • Convertors of bottles, film, and sheet who need to maintain high-quality levels of PCR Performance enhancement antioxidants such as Cesa Nox A4R are valuable for many stakeholders within the circular economy, and indeed anyone seeking to achieve high-quality levels in their recyclate while operating with ever-increasing quantities of PCR.

Garratt President, Performance Products and Solutions PolyOne Corporation Page 48 2014 Revenue by Industry Segment 2014 Revenues: $0.8 Billion At a Glance Performance Products & Solutions United States 80% Canada 14% Asia 2% Latin America 4% Appliances 8% Building & Construction 33% Consumer 5% Electrical & Electronics 3% Healthcare 1% Industrial 11% Packaging 5% Transportation 18% Wire & Cable 16% PolyOne Corporation Page 49 What We Have Delivered 4.3% 6.3% 7.2% 7.7% 2011 2012 2013 2014 Operating Margin $28 $39 $56 $63 2011 2012 2013 2014 Operating Income ($M) •Relentless focus on portfolio mix optimization •Lean Six Sigma drives operational excellence • Innovating in new markets such as healthcare •Expanding presence in Mexico and China Performance Products & Solutions PolyOne Corporation Page 50 $96 $109 2006* 2014 To Value Gross Margin ($ in millions) +13% 1,431 1,124 2006* 2014 From Volume… (lbs in millions) -21% Performance Products & Solutions *2006 = Near peak housing PolyOne Corporation Page 51 Accelerating Growth Market Growth/ Megatrends Innovation Collaboration Geographic Expansion Performance Products & Solutions PolyOne Corporation Page 52 Who We Are Growing With Performance Products & Solutions http://www.google.com/url? Richardson Executive Vice President and Chief Financial Officer PolyOne Corporation Page 71 Who We Are Growing With http://www.google.com/url? Special items include charges related to specific strategic initiatives or financial restructuring such as: consolidation of operations; debt extinguishment costs; employee separation costs resulting from personnel reduction programs, plant phase-in costs, executive separation agreements; asset impairments; mark-to-market adjustments associated with actuarial gains and losses on pension and other post-retirement benefit plans; environmental remediation costs, fines, penalties, remediation costs and related insurance recoveries related to facilities no longer owned or closed in prior years; gains and losses on the divestiture of operating businesses, joint ventures and equity investments; gains and losses on facility or property sales or disposals; results of litigation, fines or penalties, where such litigation (or action relating to the fines or penalties) arose prior to the commencement of the performance period; unrealized gains and losses from foreign currency option contracts; one-time, non-recurring items; and the effect of changes in accounting principles or other such laws or provisions affecting reported results. (2) Tax adjustments include the net tax expense (benefit) from one-time income tax items and deferred income tax valuations allowance adjustments. 2 Adjusted net cash provided by operating activities is calculated as follows: 2008Y 2009Y 2010Y 2011Y 2012Y 2013Y 2014Y Net cash provided by operating activities $ 72.5 $ 229.7 $ 140.8 $ 72.5 $ 106.9 $ 109.0 $ 208.4 Dividends and distributions received from joint ventures (32.9) (36.5) (24.2) (6.0) - - - Pension Cash Contributions 35.9 28.5 37.5 38.1 68.8 69.8 21.6 Adjusted net cash provided by operating activities $ 75.5 $ 221.7 $ 154.1 $ 104.6 $ 175.7 $ 178.8 $ 230.0 Net debt to adjusted EBITDA is calculated as follows: Twelve Months Ended (In millions) December 31, 2011 December 31, 2012 December 31, 2013 December 31, 2014 Short-term portion and current portion of long-term debt $ 3.0 $ 3.8 $ 12.7 $ 61.8 Long-term debt 704.0 703.1 976.2 962.0 Less: Cash and cash equivalents (191.9) (210.0) (365.2) (238.6) Net Debt $ 515.1 496.9 623.7 785.2 Income before income taxes $ 168.9 $ 83.3 $ 151.0 $ 88.4 Interest expense, net 33.7 50.8 63.5 62.2 Depreciation and amortization 53.2 65.8 108.8 123.9 Equity income from equity affiliates (5.7) - - - Special items, impact on income before income taxes (48.1) 55.1 46.3 164.9 Interest expense included in special items - (1.3) (1.9) - Accelerated depreciation included in special items - - (12.7) (23.1) Adjusted EBITDA $ 202.0 $ 253.7 $ 355.0 $ 416.3 Net Debt/Adjusted EBITDA 2.6 2.0 1.8 1.9 Investor Day - May 18 2015 r11 Investor Day - May 18 2015 POL IR Presentation - Investor Day - 5_13_15 Master Version WEBSITE Investor Day Forward-Looking Statements Use of Non-GAAP Measures Agenda Introduction�� Slide Number 6 The Leaders Behind the Team Commodity to Specialty Transformation Proof of Performance Mix Shift Highlights Specialty Transformation Proof of Performance Successfully Navigating Change Since 2012 Strategy and Execution Drive Results Well Positioned for Accelerated Growth Global Color, Additives & Inks�� At a Glance A Case Study for Transformational Success Slide Number 18 Accelerating Growth Who We Are Growing With Innovation Pipeline Potential Megatrends Aligned with Key End Markets Key Initiatives Platinum Vision Summary Global Specialty Engineered Materials�� What We Do At a Glance A Case Study for Transformational Success Slide Number 30 Accelerating Growth Who We Are Growing With Innovation Pipeline Potential Megatrends Aligned with Key End Markets Key Initiatives Platinum Vision Summary �Designed Structures and Solutions�� At a Glance Early Progress A Lot of Work Remains with Tremendous Upside Potential Innovating with Cross-Business Unit Technologies Who We Are Growing With Key Initiatives Platinum Vision Summary Performance Products and Solutions�� At a Glance What We Have Delivered Slide Number 50 Accelerating Growth Who We Are Growing With Geographic Growth Opportunities Innovation Pipeline Potential Megatrends Aligned with Key End Markets Key Initiatives Platinum Vision Summary PolyOne Distribution�� At a Glance Slide Number 61 What We Have Delivered Accelerating Growth Who We Are Growing With Megatrends Aligned with Key End Markets Geographic Growth Opportunities Going Beyond Distribution Platinum Vision Summary Financial Highlights�� Who We Are Growing With 2014 Awards and Recognitions 2014 Financial Highlights Proof of Performance & 2015 Targets Ours is Not a Cost Cutting Story Financial Strength Financial Flexibility Cash to Generate Value Slide Number 79 Slide Number 80 2020 Platinum Vision�� PolyOne Core Values Confirmation of Our Strategy Strategy and Execution Drive Results Formula for Success Track Record of Successful Acquisitions Driving Toward Premier Profitability 2020 Platinum Vision Platinum Vision: Pathway to Accelerated Growth Driving Toward a Premium Specialty Multiple Why Invest In PolyOne?

MATERIAL LIFECYCLE GLOSSARY OF TERMS Material Manufacturer - Raw material suppliers or processors who produce materials ready for manufacturing Reworkable Material - O� spec or scrap materials that are re-ground or re-worked back into the same supply or manufacturing process that produced them – these are not considered recycled Prime - Materials supplied that meet the required specification, ready for processing/ manufacturing Processor - Manufacturing of products ready for market e.g. molders and extruders Retail/Consumer - End user Reclaimer - Local recycling center for consumer goods Post-Consumer Recycle (PCR) - Materials derived from polymers reclaimed at the end of their lifecycle that have been through waste treatment Scrap Parts & Materials - Waste from the manufacturing process that cannot be reused within the same process or sold to the market Waste Treater - Regional industrial waste reclamation center Post-Industrial Recycle (PIR) - Material derived from scrap reclaimed within the manufacturing process that has been through waste treatment PRIME POST- CONSUMER RECYCLE (PCR) WASTE TREATER POST- INDUSTRIAL RECYCLE (PIR) REWORKABLE MATERIAL RETAIL/ CONSUMER RECLAIMER MATERIAL MANUFACTURER SCRAP PARTS & MATERIALS PROCESSOR

What is Classed as Recycled Content Infographic_Select GLOSSARY OF TERMS POST- CONSUMER RECYCLE (PCR) TRADITIONAL BLACK MASTERBATCH AVIENT ONCOLOR™ IR SORTABLE BLACK MASTER- BATCH RETAIL/ CONSUMER RECLAIMER LANDFILL MATERIAL MANUFACTURER RECYCLE VALUE CHAIN BLACK PACKAGING Material Manufacturer - Raw material suppliers or processors who produce materials ready for manufacturing Masterbatch - A solid or liquid additive used for coloring plastics Retail/Consumer - End user Reclaimer - Local recycling center for consumer goods Post-Consumer Recycle (PCR) - Materials derived from polymers reclaimed at the end of their lifecycle that have been through waste treatment Landfill - Infrastructure with highly engineered containment systems that act as a safe and permanent repository for waste material that cannot be reused or recycled

Richardson said, “Having joined PolyOne in November, I am excited to be part of an organization whose focus is on improving profitability, growing the business, and becoming the leader in material science formulation.

Energy producers who want to harness hydrogen power must either build new or retrofit existing pipelines.