Ethiopia Tanzania New Zealand Honduras Ecuador Bulgaria Italy Slovakia Greater China Nepal Uzbekistan Gabon Tunisia Jamaica Paraguay Croatia Kosovo Slovenia India Oman Vietnam Ghana Uganda Mexico Peru Cyprus Latvia Spain Indonesia Pakistan Yemen Guinea Zambia Panama Suriname Czech Republic Lithuania Sweden Iraq Philippines Ivory Coast Zimbabwe Puerto Rico Uruguay Denmark Luxembourg Switzerland Israel Qatar Kenya Trinidad & Tobago Venezuela Estonia Malta Ukraine Japan Russia Libya United States Finland Netherlands United Kingdom Jordan Saudi Arabia Madagascar France North Macedonia Kazakhstan Singapore Mali Sustainability Report | 2020 13 Sustainability remains integral to achieving Avient’s vision, mission, responsibility and performance. Keeping our environment and planet clean is our daily responsibility to ensure a great place to live for future generations,” shared Michael Adam, Global Technology Director, Color, Additives and Inks in Pommerloch, Luxembourg. 5.

Francisco Nakasato, 1700 13295-000 Itupeva Sao Paulo, Brazil 電話：+55 11 4593 9200 歐洲 地區總部，盧森堡 Pommerloch 19 Route de Bastogne Pommerloch, Luxembourg, L-9638 電話：+352 269 050 35 傳真：+352 269 050 45 www.avient.com https://www.avient.com 首席執行官寄語 我們的願景和策略 核心價值觀和個人價值觀 我們的《行為準則》 道德行为指南 個人價值觀 解決問題和舉報違規情況 道德熱線 禁止打擊報復 《行為準則》的適用範圍 違反本準則的行為 尊重所有人 多元和包容 歧視或騷擾 工作場所關係 物質濫用 人身安全和 工作場所暴力 工作誠實 準確的資訊、資料和記錄 會計誠信 政府調查和查詢 政治獻金/活動和慈善捐款 內幕資訊和內幕交易 電腦安全、軟體許可和版權 社交媒體和社交網路 互聯網和電子郵件的使用 隱私、個人資訊和資料保護 專有和機密資訊、創意和智慧財產權 資產的保護和使用 公司通訊 我們企業的誠信 公平交易 賄賂和回扣 代理人和顧問 競爭 禮品和招待 利益衝突 假公濟私 國際貿易 企業社會責任 可持續性 安全、健康和環境 產品和服務的安全 尊重人權 共同的承諾 資源和聯繫資訊

Francisco Nakasato, 1700 13295-000 Itupeva Sao Paulo, Brazil Teléfono: +55 11 4593 9200 Europa Sede regional de Pommerloch (Luxemburgo) 19 Route de Bastogne Pommerloch, Luxembourg, L-9638 Teléfono: +352 269 050 35 Fax: +352 269 050 45 www.avient.com https://www.avient.com Reconocimiento del cumplimiento del código de conducta de Avient Instrucciones: Por favor, lea, firme y devuelva este documento a Recursos Humanos.

Francisco Nakasato, 1700 13295-000 Itupeva Sao Paulo, Brazil 电话：+55 11 4593 9200 欧洲 地区总部，卢森堡 Pommerloch 19 Route de Bastogne Pommerloch, Luxembourg, L-9638 电话：+352 269 050 35 传真：+352 269 050 45 www.avient.com https://www.avient.com 确认遵守 Avient 的行为准则 说明： 请阅读并签署本文件，并将之交还给人力资源部。

Francisco Nakasato, 1700 13295-000 Itupeva Sao Paulo, Brazil 電話：+55 11 4593 9200 歐洲 盧森堡波莫洛赫區域總部 19 Route de Bastogne Pommerloch, Luxembourg, L-9638 電話：+352 269 050 35 傳真：+352 269 050 45 www.avient.com https://www.avient.com 確認遵守 AVIENT 的《行為準則》 說明： 請閱讀、簽署並將本文件交回給人力資源部門。

Francisco Nakasato, 1700 13295-000 Itupeva Sao Paulo, Brazil 电话：+55 11 4593 9200 欧洲 地区总部，卢森堡 Pommerloch 19 Route de Bastogne Pommerloch, Luxembourg, L-9638 电话：+352 269 050 35 传真：+352 269 050 45 www.avient.com https://www.avient.com 首席执行官寄语 我们的愿景和战略 核心价值观和个人价值观 我们的《行为准则》 道德行为指南 个人价值观 解决问题和举报违规情况 道德热线 禁止打击报复 《行为准则》的适用范围 违反本准则的行为 尊重所有人กคน 多元和包容 歧视或骚扰 工作场所关系 物质滥用 人身安全和 工作场所暴力 工作诚实 准确的信息、数据和记录 会计诚信 政府调查和询查 政治献金/活动和慈善捐款 内幕信息和内幕交易 计算机安全、软件许可和版权 社交媒体和社交网络 互联网和电子邮件的使用 隐私、个人信息和数据保护 专有和机密信息、创意和知识产权 资产的保护和使用 公司通讯 我们企业的诚信 公平交易 贿赂和回扣 代理人和顾问 竞争 礼品和招待 利益冲突 假公济私 国际贸易 企业社会责任 可持续性 安全、健康和环境 产品和服务的安全 尊重人权 共同的承诺 资源和联系信息

Francisco Nakasato, 1700 13295-000 Itupeva Sao Paulo, Brazil Teléfono: +55 11 4593 9200 Europa Sede central regional de Pommerloch (Luxemburgo) 19 Route de Bastogne Pommerloch, Luxembourg, L-9638 Teléfono: +352 269 050 35 Fax: +352 269 050 45 www.avient.com https://www.avient.com Reconocimiento del cumplimiento del código de conducta de Avient Instrucciones: Lea, firme y devuelva este documento a Recursos Humanos.

Francisco Nakasato, 1700 13295-000 Itupeva Sao Paulo, Brazil Telefoon: +55 11 4593 9200 Europa Regionaal hoofdkantoor Pommerloch, Luxemburg 19 Route de Bastogne Pommerloch, Luxembourg, L-9638 Telefoon: +352 269 050 35 Fax: +352 269 050 45 www.avient.com https://www.avient.com Erkenning van de naleving van de gedragscode van Avient Instructies: Lees en onderteken dit document en stuur het terug naar personeelszaken.

Bank Trust National Association, as collateral trustee (incorporated by reference to Exhibit 10.3 to the Company’s Current Report on Form 8-K filed on June 8, 2006, SEC File No. 1-16091) 10.21 Assumption of Liabilities and Indemnification Agreement, dated March 1, 1993, amended and restated by Amended and Restated Assumption of Liabilities and Indemnification Agreement, dated April 27, 1993 (incorporated by reference to Exhibit 10.14 to The Geon Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 1996, SEC File No. 1-11804) 10.22 Unconditional and Continuing Guaranty, between the Company and Olin Corporation and Sunbelt Chlor Alkali Partnership (incorporated by reference to Exhibit 10(c) to The Geon Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 1996, SEC File No. 1-11804) 10.23 Asset Contribution Agreement — PVC Partnership (Geon) (incorporated by reference to Exhibit 10.3 to The Geon Company’s Current Report on Form 8-K filed on May 13, 1999, SEC File No. 1-11804) 10.24+ Form of Award Agreement for Stock-Settled Stock Appreciation Rights (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2007, SEC File No. 1-16091) 10.25 Sale and Agreement, by and among PolyOne Corporation, Occidental Chemical Corporation, and their representative affiliates party thereto, dated as of July 6, 2007 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2007, SEC File No. 1-16091) 10.26+ PolyOne Corporation 2008 Equity and Performance Incentive Plan (incorporated herein by reference to Appendix A to the Registrant’s proxy statement on Schedule 14A (SEC File No. 1-16091), filed on March 25, 2008). 10.27+ Form of Award Agreement for Restricted Stock Units (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2008, SEC File No. 1-16091) 10.28+ Form of Award Agreement for Stock-Settled Stock Appreciation Rights (incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2008, SEC File No. 1-16091) 10.29+ First Amendment to The Geon Company Section 401(a)(17) Benefit Restoration Plan (December 31, 2007 Restatement) (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2009, SEC File No. 1-16091) 10.30+ Amendment No. 1 to the PolyOne Supplemental Retirement Benefit Plan (As Amended and Restated Effective December 31, 2007) (incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2009, SEC File No. 1-16091) 10.31+ Form of Grant of Performance Shares under the 2009 Long-Term Incentive Plan (incorporated by reference to Exhibit 10.3 to the Company’s 10.32+ Form of Grant of Stock-Settled Stock Appreciation Rights under the 2009 Long-Term Incentive Plan (incorporated by reference to Exhibit 10.4 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2009, SEC File No. 1-16091) 10.33+ Form of Grant of Performance Units under the 2009 Long-Term Incentive Plan (incorporated by reference to Exhibit 10.5 to the Company’s 10.34+ Executive Severance Plan, as amended and restated effective February 17, 2009 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2009, SEC File No. 1-16091) 10.35+ Undetermined Time Employment Contract between PolyOne Luxembourg s.a.r.l. and Bernard Baert (incorporated herein by reference to Exhibit 10.1 to the Company’s Form 8-K, filed with the Commission on September 2, 2009, SEC File No. 1-106091) 10.36+ Amendment No. 2 to the PolyOne Supplemental Retirement Benefit Plan (As Amended and Restated Effective December 31, 2007) (incorporated by reference to Exhibit 10.51 to the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2009, SEC File No. 1-16091) 21.1 Subsidiaries of the Company 67 23.1 Consent of Independent Registered Public Accounting Firm — Ernst & Young LLP 23.2 Consent of Independent Registered Public Accounting Firm — Ernst & Young LLP 31.1 Certification of Stephen D. Bank Trust National Association, as collateral trustee (incorporated by reference to Exhibit 10.3 to the Company’s Current Report on Form 8-K filed on June 8, 2006, SEC File No. 1-16091) 10.21 Assumption of Liabilities and Indemnification Agreement, dated March 1, 1993, amended and restated by Amended and Restated Assumption of Liabilities and Indemnification Agreement, dated April 27, 1993 (incorporated by reference to Exhibit 10.14 to The Geon Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 1996, SEC File No. 1-11804) 10.22 Unconditional and Continuing Guaranty, between the Company and Olin Corporation and Sunbelt Chlor Alkali Partnership (incorporated by reference to Exhibit 10(C) to The Geon Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 1996, SEC File No. 1-11804) 10.23 Asset Contribution Agreement — PVC Partnership (Geon) (incorporated by reference to Exhibit 10.3 to The Geon Company’s Current Report on Form 8-K filed on May 13, 1999, SEC File No. 1-11804) 10.24+ Form of Award Agreement for Stock-Settled Stock Appreciation Rights (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2007, SEC File No. 1-16091) 10.25 Sale and Agreement, by and among PolyOne Corporation, Occidental Chemical Corporation, and their representative affiliates party thereto, dated as of July 6, 2007 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2007, SEC File No. 1-16091) 10.26+ PolyOne Corporation 2008 Equity and Performance Incentive Plan (incorporated herein by reference to Appendix A to the Registrant’s proxy statement on Schedule 14A (SEC File No. 1-16091), filed on March 25, 2008). 10.27+ Form of Award Agreement for Restricted Stock Units (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2008, SEC File No. 1-16091) 10.28+ Form of Award Agreement for Stock-Settled Stock Appreciation Rights (incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2008, SEC File No. 1-16091) 10.29+ First Amendment to The Geon Company Section 401(a)(17) Benefit Restoration Plan (December 31, 2007 Restatement) (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2009, SEC File No. 1-16091) 10.30+ Amendment No. 1 to the PolyOne Supplemental Retirement Benefit Plan (As Amended and Restated Effective December 31, 2007) (incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2009, SEC File No. 1-16091) 10.31+ Form of Grant of Performance Shares under the 2009 Long-Term Incentive Plan (incorporated by reference to Exhibit 10.3 to the Company’s 10.32+ Form of Grant of Stock-Settled Stock Appreciation Rights under the 2009 Long-Term Incentive Plan (incorporated by reference to Exhibit 10.4 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2009, SEC File No. 1-16091) 10.33+ Form of Grant of Performance Units under the 2009 Long-Term Incentive Plan (incorporated by reference to Exhibit 10.5 to the Company’s 10.34+ Executive Severance Plan, as amended and restated effective February 17, 2009 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2009, SEC File No. 1-16091) 10.35+ Undetermined Time Employment Contract between PolyOne Luxembourg s.a.r.l. and Bernard Baert (incorporated herein by reference to Exhibit 10.1 to the Company’s Form 8-K, filed with the Commission on September 2, 2009, SEC File No. 1-106091) 10.36+ Amendment No. 2 to the PolyOne Supplemental Retirement Benefit Plan (As Amended and Restated Effective December 31, 2007) (incorporated by reference to Exhibit 10.51 to the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2009, SEC File No. 1-16091) 21.1 Subsidiaries of the Company 23.1 Consent of Independent Registered Public Accounting Firm — Ernst & Young LLP 23.2 Consent of Independent Registered Public Accounting Firm — Ernst & Young LLP 31.1 Certification of Stephen D.

Climate change (3.1.1.1) Risk identifier Select from: ☑ Risk1 (3.1.1.3) Risk types and primary environmental risk driver Policy ☑ Carbon pricing mechanisms (3.1.1.4) Value chain stage where the risk occurs Select from: ☑ Direct operations (3.1.1.6) Country/area where the risk occurs Select all that apply ☑ Chile ☑ Mexico ☑ China ☑ Poland ☑ Spain ☑ Sweden ☑ Canada ☑ Finland 25 ☑ France ☑ Germany ☑ Hungary ☑ Singapore ☑ Ireland ☑ Luxembourg ☑ Colombia ☑ Netherlands ☑ Argentina ☑ New Zealand ☑ Indonesia ☑ South Africa ☑ United Kingdom of Great Britain and Northern Ireland (3.1.1.9) Organization-specific description of risk Carbon emissions have become the subject of an increasing amount of state and local, regional, national, and international attention. Climate change (3.6.1.1) Opportunity identifier Select from: ☑ Opp1 (3.6.1.3) Opportunity type and primary environmental opportunity driver Products and services ☑ Development of new products or services through R&D and innovation (3.6.1.4) Value chain stage where the opportunity occurs Select from: ☑ Downstream value chain (3.6.1.5) Country/area where the opportunity occurs 56 Select all that apply ☑ Peru ☑ Spain ☑ Chile ☑ Brazil ☑ China ☑ Canada ☑ India ☑ France ☑ Italy ☑ Mexico ☑ Poland ☑ Germany ☑ Sweden ☑ Hungary ☑ Turkey ☑ Ireland ☑ Belgium ☑ Colombia ☑ Finland ☑ Malaysia ☑ Pakistan ☑ Indonesia ☑ Thailand ☑ Singapore ☑ Viet Nam ☑ Luxembourg ☑ Argentina ☑ Netherlands ☑ Guatemala ☑ New Zealand ☑ Saudi Arabia ☑ South Africa ☑ Taiwan, China ☑ United States of America ☑ United Kingdom of Great Britain and Northern Ireland (3.6.1.8) Organization specific description Global challenges like climate change, demographic shifts and dwindling resources have prompted Avient to accelerate development of Sustainable Solutions. 311 Select from: ☑ No (7.30.16.4) Consumption of purchased heat, steam, and cooling (MWh) 0 (7.30.16.5) Consumption of self-generated heat, steam, and cooling (MWh) 0 (7.30.16.6) Total electricity/heat/steam/cooling energy consumption (MWh) 14031.46 (7.30.16.7) Provide details of the electricity consumption excluded NA Luxembourg (7.30.16.1) Consumption of purchased electricity (MWh) 189.57 (7.30.16.2) Consumption of self-generated electricity (MWh) 0 (7.30.16.3) Is some or all of this electricity consumption excluded from your RE100 commitment?