Our mix shift strategy continues to accelerate, and in 2012, 45 percent of our operating income was generated from Specialty, versus a mere two percent in 2005. Newlin Chairman, President and Chief Executive Officer March 11, 2013 25+38+38 +73+74+95 19+15+9 +56+72+85 Operating Income % Specialty PP&S Distribution Specialty Platform Operating Income % of Total ROIC** (after-tax) 2007 3.2% 6.1% 3.0% 20% 7% 2012 9.1% 9.0% 6.4% 45% 11% 2015 TARGET 12%–16% 9%–12% 6%–7.5% 65%–75% 15% 2012 2011 2010 2009 2008 2007 0 20 40 60 80 100 120 $ mIllIOnS SPECIAlTY PlATFORm OPERATInG InCOmE 40+68+70 +86+84+90201220112010 2009 2008 2007 0 10 20 30 40 50 60 % PERCEnTAGE SPECIAlTY PlATFORm OPERATInG InCOmE % OF TOTAl* 41+33+35 +70+79+93201220112010 2009 2008 2007 0 1 2 3 4 5 6 7 8 % PERCEnTAGE ADJUSTED RETURn On SAlES^ POlYOnE STOCK (POl) PERFORmAnCE VERSUS S&P 2012 2011 2010 2009 2008 2007 0 .20 .40 .60 .80 1.00 1.20 1.40 $ DOll ARS ADJUSTED EARnInGS PER SHARE† 0 .2 .4 .6 .8 1 1.2 *Operating income excludes corporate operating income SAFETY InJURY InCIDEnCE RATE˚ 2012 2011 2010 2009 2008 2007 12.31.09 6.30.10 12.31.10 6.30.11 12.31.11 6.30.12 12.31.12 DATE 200 150 100 50 0 % P E R C E n TA G E POl S&P 600 CHEmICAlS S&P 500 InJURY InCIDEnCE R ATE 91+91+71 +54+47+45 ˚Number of injuries per 100 full time associates^Operating income excludes special items and equity income from SunBelt **ROIC is defined as TTM adjusted OI divided by the sum of average debt and equity over a 5 quarter period †EPS excluding special items and equity income from SunBelt POL 173% S&P 600 Chemicals 34% S&P 500 28% 5 ANNUAL REPORT 2012 Proof of Performance Our values, strategy, commitment and execution are clearly evident in our recent financial and operational performance. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA Index to Financial Statements Page Management’s Report 40 Reports of Independent Registered Public Accounting Firm 41-42 Consolidated Financial Statements: Consolidated Statements of Income 43 Consolidated Statements of Comprehensive Income 44 Consolidated Balance Sheets 45 Consolidated Statements of Cash Flows 46 Consolidated Statements of Shareholders’ Equity 47 Notes to Consolidated Financial Statements 48-78 POLYONE CORPORATION 39 MANAGEMENT’S REPORT The management of PolyOne Corporation is responsible for preparing the consolidated financial statements and disclosures included in this Annual Report on Form 10-K.

Online access will begin at 8:45 a.m. COMPENSATION DISCUSSION AND ANALYSIS PROXY STATEMENT 2022 | Annual Meeting of Shareholders 45 Measure 2021 2020 Change Revenue $4,818.8 $3,242.1 48.6% Working Capital as a Percentage of Sales 10.9% 11.1% -1.8% Stock Price Per Share(1) $55.95 $40.28 38.9% EPS from Continuing Operations $2.53 $1.46 73.3% Adjusted EPS from Continuing Operations(2) $3.05 $1.73 76.3% Adjusted EPS from Continuing Operations (Pro Forma)(2)(3) $3.05 $1.93 58.0% Operating Income $381.2 $189.3 101.4% Adjusted Operating Income(2) $429.0 $263.0 63.1% (1) Represents our adjusted closing price on the last trading day of the applicable year Base Salary Annual Incentive Long-Term Incentive To attract and retain talent Drives the achievement of key business results on an annual basis Directly ties the interests of NEOs to our shareholders Fixed base of cash compensation Performance-based and not guaranteed Helps retain key talent and a majority is performance-based and not guaranteed Weighting 14%—CEO 31%—CFO 34%—Other NEOs Weighting 18%—CEO 22%—CFO 21%—Other NEOs Weighting 68%—CEO 47%—CFO 45%—Other NEOs While the Compensation Committee does consider comparative compensation information to gain a general understanding of current compensation practices in the market, it does not benchmark or ultimately target a specific percentile or data point in assessing competitiveness for base pay or our incentive programs.

2025 Proxy Statement Table of Contents Page Letter to Shareholders i Notice of 2025 Annual Meeting of Shareholders ii Record Date ii Voting Matters and Vote Recommendations ii Proxy Statement 1 Proxy Summary 1 Voting and Meeting Information 1 Attendance and Participation 1 Who is Eligible to Vote 2 Advance Voting Methods 2 Voting During the Annual Meeting 3 Questions 3 Our Purpose and Strategic Framework 4 People 4 Products 5 Planet 5 Performance 6 Our Director Nominees and Committee Membership 6 Summary of Director Nominee Skills, Experience and Background 7 Governance Highlights 8 PROPOSAL 1—Election of Twelve Director Nominees to Our Board of Directors 10 PROPOSAL 2—Approval, on an Advisory Basis, of Named Executive Officer Compensation 23 PROPOSAL 3—Ratification of the Appointment of Ernst & Young LLP ("EY") as Our Independent Registered Public Accountant 25 Independent Registered Public Accountant Services and Related Fee Arrangements 25 Report of the Audit Committee 26 Corporate Governance 28 Director Independence 28 Board Leadership Structure 29 Majority Voting for Directors 29 Board Oversight of Risk 29 Board Oversight of ESG and Sustainability Matters 30 Code of Ethics, Code of Conduct and Corporate Governance Guidelines 31 Related Person Transactions 31 Communication with the Board 32 Board and Committees 32 Board Refreshment 37 Board Tenure 37 2024 Non-Employee Director Compensation 38 Non-Employee Director Compensation Highlights 38 Non-Employee Director Retainer and Meeting Fees 38 2024 Non-Employee Director Compensation Table 39 Fully Vested Deferred Shares 40 Ownership of Avient Shares 41 Beneficial Ownership of Our Common Shares 41 Stock Ownership Guidelines for Non-Employee Directors 42 Compensation Discussion and Analysis 43 Executive Summary 43 Executive Compensation Philosophy and Objectives 45 What We Pay and Why: Elements of Compensation 47 Other Aspects of Our Compensation Programs 54 Executive Compensation 59 2024 Summary Compensation Table 59 2024 Grants of Plan-Based Awards 62 Outstanding Equity Awards at 2024 Fiscal Year-End 64 2024 Option Exercises and Stock Vested 65 2024 Non Qualified Deferred Compensation 65 Potential Payments Upon Termination or Change of Control 66 CEO Pay Ratio Disclosure 71 Pay Versus Performance Disclosure 72 Compensation Committee Interlocks and Insider Participation 76 Risk Assessment of the Compensation Programs 76 Compensation Committee Report 76 Miscellaneous Provisions 77 Appendix A 80 In this proxy statement, 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. Online access will begin at 8:45 a.m. COMPENSATION DISCUSSION AND ANALYSIS PROXY STATEMENT 2025 | Annual Meeting of Shareholders 45 As described below, the Consultant assisted the Compensation Committee by (1) providing comparative compensation information for management's review of base salaries, annual incentive targets and long-term incentive targets in the context of a general understanding of current compensation practices in the market, (2) providing guidance on incentive plan design, (3) monitoring and communicating trends in executive compensation to the Compensation Committee, (4) assisting with our proxy statement disclosures, and (5) assessing our Board’s compensation.

Massillon, Ohio 45. Pederson 57 Senior Vice President, President of Specialty Engineered Materials Vinod Purayath 45 Senior Vice President and Chief Technology Officer Joel R. We expect finite-lived intangibles amortization expense for the next five years as follows: (In millions) 2024 2025 2026 2027 2028 Expected amortization expense $ 77.3 $ 77.3 $ 76.6 $ 74.5 $ 74.0 45 AVIENT CORPORATION Note 5 — EMPLOYEE SEPARATION AND RESTRUCTURING COSTS We are engaged in a restructuring program associated with our integration of Clariant Color.

New lower diameter Swellcoat™ yarns have enabled cable designers to reduce the cable footprint to develop higher fiber count cables, increasing the data transmission capability within a fixed cross section. 5G as a Sustainability Enabler Sustainability Report | 2018 45 Outdoor enthusiasts demand gear and equipment that delivers uncompromising performance, in places where failure is not an option. Reporting Practice 102–45 Entities included in the consolidated financial statements PolyOne 2018 Annual Report—Form 10-K Page Cover Page 102–46 Defining report content and topic boundaries The information in this report applies to PolyOne Corporation and all owned facilities, joint ventures, and operating companies globally within the reporting period, unless otherwise stated.

फर्ासंि सक्ो नाकासटो, 1700 13295-000 इटपु वेा साओ पॉलो, बर्ाज़ ील दरूभाष: +55 11 4593 9200 यरूोपयरूोप पर्कष् तेर् ीय म खुय्ालय पोमरलोक, लकस्मबरग् 19 र टू द े बासट्ोगन् े पोमरलोक, लकस्मबरग्, L-9638 दरूभाष: +352 269 050 35 फ कैस्: +352 269 050 45 35 Fax: +352 269 050 45 www.avient.com https://www.avient.com AVIENT क ी आचार सहंि ता क े अनपुालन क ी अभि सव् ीकतृिAVIENT क ी आचार सहंि ता क े अनपुालन क ी अभि सव् ीकतृि नि रद् शे:नि रद् शे: कपृया यह दसत्ाव जे़ पढ ़े,ं हसत्ाकष्र कर ें और मानव ससंाधन वि भाग को लौटा द े।ं

Francisco Nakasato, 1700 13295-000 Itupeva Sao Paulo, Brasil Telepon: +55 11 4593 9200 Eropa Kantor Pusat Regional Pommerloch, Luksemburg 19 Route de Bastogne Pommerloch, Luksemburg, L-9638 Telepon: +352 269 050 35 Faks: +352 269 050 45 www.avient.com https://www.avient.com Pesan Dari CEO Visi Nilai Inti dan Pribadi Pedoman Perilaku Kita Pedoman Perilaku Etis Nilai Pribadi Menyelesaikan Pertanyaan dan Melaporkan Situasi Ketidakpatuhan Saluran Langsung Etika Larangan Pembalasan Dendam Penerapan Pedoman Perilaku Pelanggaran Pedoman Menghormati Semua Orang Keragaman dan Inklusi Diskriminasi atau Pelecehan Hubungan di Tempat Kerja Penyalahgunaan Zat Terlarang Keamanan Fisik dan Kekerasan di Tempat Kerja Kejujuran di Tempat Kerja Informasi, Data, dan Catatan yang Akurat Integritas Akuntansi Penyelidikan dan Permintaan Informasi dari Pemerintah Kontribusi/Kegiatan Politik dan Kontribusi Amal Informasi dan Perdagangan Orang Dalam Keamanan Komputer, Lisensi Perangkat Lunak, dan Hak Cipta Media Sosial dan Jejaring Sosial Perlindungan Privasi, Informasi Pribadi, dan Data Informasi Berhak Milik dan Rahasia, Gagasan, dan Kekayaan Intelektual Pengamanan dan Penggunaan Aset Kita semua bertanggung jawab untuk melindungi aset dan sumber daya Avient yang disediakan kepada kita selama bekerja dari kehilangan melalui kelalaian atau pencurian.

Поммерлох, Люксем- бург 19 Route de Bastogne Pommerloch, Luxembourg, L-9638 Телефон: +352 269 050 35 Факс: +352 269 050 45 www.avient.com https://www.avient.com ОБРАЩЕНИЕ ГЕНЕРАЛЬНОГО ДИРЕКТОРА Наше видение и стратегия Основополагающие и личностные ценности Наш кодекс поведения РУКОВОДЯЩИЕ ПРИНЦИПЫ ДЛЯ ЭТИЧНОГО ПОВЕДЕНИЯ ЛИЧНОСТНЫЕ ЦЕННОСТИ РЕШЕНИЕ ВОПРОСОВ И СООБЩЕНИЯ О СИТУАЦИЯХ, КОГДА ПРОИСХОДЯТ НАРУШЕНИЯ НОРМАТИВНО-ПРАВОВОГО СООТВЕТСТВИЯ ГОРЯЧАЯ ЛИНИЯ ПО ВОПРОСАМ ЭТИКИ ЗАПРЕТ МЕР ВОЗМЕЗДИЯ ПРИМЕНЕНИЕ КОДЕКСА ПОВЕДЕНИЯ НАРУШЕНИЯ КОДЕКСА Уважение ко всем РАЗНООБРАЗИЕ И ВКЛЮЧЕНИЕ СОТРУДНИКОВ В ПРОЦЕСС ОБСУЖДЕНИЯ ПРОБЛЕМ ДИСКРИМИНАЦИЯ ИЛИ ПРИТЕСНЕНИЯ ОТНОШЕНИЯ НА РАБОЧЕМ МЕСТЕ ЗЛОУПОТРЕБЛЕНИЕ АЛКОГОЛЕМ И НАРКОТИКАМИ ФИЗИЧЕСКАЯ БЕЗОПАСНОСТЬ И НАСИЛИЕ НА РАБОЧЕМ МЕСТЕ Честность на рабочем месте ТОЧНАЯ ИНФОРМАЦИЯ, ДАННЫЕ И ДОКУМЕНТАЦИЯ ДОБРОСОВЕСТНОСТЬ БУХГАЛТЕРСКОГО УЧЕТА РАССЛЕДОВАНИЯ, ПРОВОДИМЫЕ ГОСУДАРСТВЕННЫМИ ОРГАНАМИ, И ЗАПРОСЫ ПОЛИТИЧЕСКИЕ ВЗНОСЫ/МЕРОПРИЯТИЯ И БЛАГОТВОРИТЕЛЬНЫЕ ВЗНОСЫ ИНСАЙДЕРСКАЯ ИНФОРМАЦИЯ И ТОРГОВЛЯ КОМПЬЮТЕРНАЯ БЕЗОПАСНОСТЬ, ЛИЦЕНЗИРОВАНИЕ ПРОГРАММНОГО ОБЕСПЕЧЕНИЯ И АВТОРСКИЕ ПРАВА СОЦИАЛЬНЫЕ МЕДИА И СОЦИАЛЬНЫЕ СЕТИ КОНФИДЕНЦИАЛЬНОСТЬ, ЛИЧНАЯ ИНФОРМАЦИЯ И ЗАЩИТА ДАННЫХ ЛИЧНАЯ И КОНФИДЕНЦИАЛЬНАЯ ИНФОРМАЦИЯ, ИДЕИ И ИНТЕЛЛЕКТУАЛЬНАЯ СОБСТВЕННОСТЬ ЗАЩИТА АКТИВОВ И ИХ ИСПОЛЬЗОВАНИЕ КОММУНИКАЦИИ КОМПАНИИ ИСПОЛЬЗОВАНИЕ ИНТЕРНЕТА И ЭЛЕКТРОННОЙ ПОЧТЫ Добросовестность в нашем бизнесе ЧЕСТНАЯ ДЕЛОВАЯ ПРАКТИКА ВЗЯТКИ И ОТКАТЫ АГЕНТЫ И КОНСУЛЬТАНТЫ КОНКУРЕНЦИЯ ПОДАРКИ И ЗНАКИ ГОСТЕПРИИМСТВА КОНФЛИКТ ИНТЕРЕСОВ ЗЛОУПОТРЕБЛЕНИЕ СЛУЖЕБНЫМ ПОЛОЖЕНИЕМ МЕЖДУНАРОДНАЯ ТОРГОВЛЯ Корпоративная социальная ответственность УСТОЙЧИВОЕ РАЗВИТИЕ БЕЗОПАСНОСТЬ, ЗДОРОВЬЕ И ОКРУЖАЮЩАЯ СРЕДА БЕЗОПАСНОСТЬ ПРОДУКЦИИ И УСЛУГ УВАЖЕНИЕ ПРАВ ЧЕЛОВЕКА СОВМЕСТНОЕ ОБЯЗАТЕЛЬСТВО

Francisco Nakasato, 1700 13295-000 Itupeva San Pablo, Brasil Teléfono: +55 11 4593 9200 Europa Sede central regional de Pommerloch, Luxemburgo 19 Route de Bastogne Pommerloch, Luxemburgo, L-9638 Teléfono: +352 269 050 35 Fax: +352 269 050 45 www.avient.com https://www.avient.com

Francisco Nakasato, 1700 13295-000 Itupeva São Paulo, Brasil Teléfono: +55 11 4593 9200 Europa Sede regional de Pommerloch, Luxemburgo 19 Route de Bastogne Pommerloch, Luxemburgo, L-9638 Teléfono: +352 269 050 35 Fax: +352 269 050 45 www.avient.com https://www.avient.com