Linha direta de ética: https://www.Avient.com/company/policies-and-governance/ethics-hotline Número de telefone da linha direta de ética: 1-877-228-5410 https://www.Avient.com/company/policies-and-governance/ethics-hotline América do Norte Sede global Avon Lake, Estados Unidos 33587 Walker Road Avon Lake, OH, Estados Unidos 44012 Ligação gratuita: +1 (866) 765 9663 Telefone: +1 (440) 930 1000 Fax: +1 (440) 930 3064 Ásia-Pacífico Sede regional Xangai, China 2F, Block C 200 Jinsu Road Pudong, 201206 Xangai, China Telefone: +86 (0) 21 6028 4888 Fax: +86 (0) 21 6028 4999 América do Sul Sede regional São Paulo, Brasil Av.

جدول المحتويات مقدمة نا مدونة قواعد السلوك الخاصة ب الاحترام للجميع الأمانة في العمل نا النزاهة في عمل ية الاجتماعية بالشركة المسؤول موارد ومعلومات الاتصالموارد ومعلومات الاتصال مدونة قواعد السلوك الخاصة | 30 أمريكا الشمالية المقر العالمي آفون ليك، الولايات المتحدة الأمريكية 33587 ووكر رود آفون ليك، أوهايو ، الولايات المتحدة 44012 الخط المجاني: 9663 765 866 1+ الهاتف:1000 930 440 1+ الفاكس: 3064 930 440 1+ آسيا والمحيط الهادئ المقر الإقليمي بشنغهاي الصين 2و، القسم ج 200 طريق جينسو بودونغ، 201206 شنغهاي، الصين الهاتف:4888 6028 21 (0) 86+ الفاكس: 4999 6028 21 (0) 86+ أمريكا الجنوبية المقر الإقليمي ساو باولو ، البرازيل جادة فرانسيسكو ناكاساتو، 1700 000-13295 إتوبيفا، ساو باولو، البرازيل الهاتف:9200 4593 11 55+ أوروبا المقر الإقليمي بومرلوتش، لوكسمبورغ 19 طريق باستون بومرلوتش، L-9638 ،لوكسمبورغ الهاتف:35 050 269 352+ الفاكس:45 050 269 352+ www.avient.com https://www.avient.com AVIENT كولس دعاوق ةنودمل لاثتمالاب رارقإلا التعليمات: يُرُجى قراءة هذه الوثيقة، وتوقيعها، وإعادتها إلى إدارة الموارد البشرية.

MAGATARTÁSI A TISZTELET BECSÜLETESSÉG A ÜZLETI TÁRSADALMI MAGATARTÁSI KÓDEXÜNK | 30 http://avient.ethicspoint.com Észak-Amerika Globális Központ Avon Lake, Egyesült Államok 33587 Walker Road Avon Lake, OH, Egyesült Államok 44012 Ingyenesen hívható telefonszám: +1 866 765 9663 Telefon: +1 440 930 1000 Fax: +1 440 930 3064 Ázsia és a Csendes-óceáni térség Regionális Központ Sanghaj, Kína 2F, Block C 200 Jinsu Road Pudong, 201206 Sanghaj, Kína Telefonszám: +86 (0) 21 6028 4888 Fax: +86 (0) 21 6028 4999 Dél-Amerika Regionális központ São Paulo, Brazília Av.

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Commission file number 1-16091 PolyOne Corporation (Exact name of registrant as specified in its charter) Ohio   34-1730488 (State or other jurisdiction of incorporation or organization)   (IRS Employer Identification No.) 33587 Walker Road,   44012 Avon Lake, Ohio   (Zip Code) (Address of principal executive offices)   Registrant’s telephone number, including area code            (440) 930-1000 Securities registered pursuant to Section 12(b) of the Act: Title of each class   Name of each exchange on which registered Common Shares, par value $.01 per share   New York Stock Exchange Securities registered pursuant to Section 12(g) of the Act: None Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.     For more information about our international operations, see Note 14, Segment Information, to the accompanying consolidated financial Where You Can Find Additional Information Our principal executive offices are located at 33587 Walker Road, Avon Lake, Ohio 44012, and our telephone number is (440) 930-1000. SHAREHOLDER INQUIRIES If you have any questions concerning your account as a shareholder, name or address changes, inquiries regarding stock certificates, or if you need tax information regarding your account, please contact our transfer agent: Equiniti Trust Company 1110 Centre Pointe Curve, Suite 101 Mendota Heights, MN 55120-4100 Phone: 1-855-598-2815 or 1-651-450-4064 www.shareowneronline.com Additional information about PolyOne, including current and historic copies of Annual Reports on Form 10-K and other reports filed with the Securities and Exchange Commission, is available online at www.polyone.com or free of charge from: Investor Affairs Administrator 33587 Walker Road Avon Lake, Ohio 44012 Phone: 440-930-1000 ANNUAL MEETING The annual meeting of shareholders of PolyOne will be held May 17, 2018 at 9:00 a.m. at PolyOne’s Corporate headquarters, 33587 Walker Road, Avon Lake, Ohio.

Commission file number 1-16091 PolyOne Corporation (Exact name of registrant as specified in its charter) Ohio 34-1730488 (State or other jurisdiction of incorporation or organization) (IRS Employer Identification No.) 33587 Walker Road, 44012 Avon Lake, Ohio (Zip Code) (Address of principal executive offices) Registrant’s telephone number, including area code (440) 930-1000 Securities registered pursuant to Section 12(b) of the Act: Title of each class Name of each exchange on which registered Common Shares, par value $.01 per share New York Stock Exchange Securities registered pursuant to Section 12(g) of the Act: None Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. For more information about our international operations, see Note 14, Segment Information, to the accompanying consolidated financial 7POLYONE CORPORATION 8 Where You Can Find Additional Information Our principal executive offices are located at 33587 Walker Road, Avon Lake, Ohio 44012, and our telephone number is (440) 930-1000. SHAREHOLDER INQUIRIES If you have any questions concerning your account as a shareholder, name or address changes, inquiries regarding stock certificates, or if you need tax information regarding your account, please contact our transfer agent: Wells Fargo Shareowner Services 1110 Centre Pointe Curve, Suite 101 Mendota Heights, MN 55120-4100 Phone: 1-855-598-2815 or 1-651-450-4064 www.shareowneronline.com Additional information about PolyOne, including current and historic copies of Annual Reports on Form 10-K and other reports filed with the Securities and Exchange Commission, is available online at www.polyone.com or free of charge from: Investor Affairs Administrator 33587 Walker Road Avon Lake, Ohio 44012 Phone: 440-930-1000 ANNUAL MEETING The annual meeting of shareholders of PolyOne will be held May 11, 2017 at 9:00 a.m. at PolyOne’s Corporate headquarters, 33587 Walker Road, Avon Lake, Ohio.

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of incorporation or organization) 33587 Walker Road, Avon Lake, Ohio 44012 (Address of principal executive offices) (Zip Code) Registrant’s telephone number, including area code (440) 930-1000 Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol Name of each exchange on which registered Common Shares, par value $.01 per share AVNT New York Stock Exchange Securities registered pursuant to Section 12(g) of the Act: None Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Where You Can Find Additional Information Our principal executive offices are located at 33587 Walker Road, Avon Lake, Ohio 44012, and our telephone number is +1 (440) 930-1000. STOCK EXCHANGE LISTING Avient's Common Stock is listed on the New York Stock Exchange, Symbol: AVNT SHAREHOLDER INQUIRIES If you have any questions concerning your account as a shareholder, name or address changes, inquiries regarding stock certificates, or if you need tax information regarding your account, please contact our transfer agent: Equiniti Trust Company 1110 Centre Pointe Curve, Suite 101 Mendota Heights, MN 55120-4100 Phone: 1-855-598-2615 or 1-651-450-4064 www.shareowneronline.com Additional information about Avient, including current and historic copies of Annual Reports on Form 10-K and other reports filed with the Securities and Exchange Commission, is available online at www.avient.com or free of charge from: Investor Relations 33587 Walker Road Avon Lake, Ohio 44012 Phone: 440-930-1000 ANNUAL MEETING The annual meeting of shareholders of Avient will be held virtually on May 12, 2022 at 9:00 a.m.

of incorporation or organization) 33587 Walker Road, Avon Lake, Ohio 44012 (Address of principal executive offices) (Zip Code) Registrant’s telephone number, including area code (440) 930-1000 Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol Name of each exchange on which registered Common Shares, par value $.01 per share AVNT New York Stock Exchange Securities registered pursuant to Section 12(g) of the Act: None Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Where You Can Find Additional Information Our principal executive offices are located at 33587 Walker Road, Avon Lake, Ohio 44012, and our telephone number is +1 (440) 930-1000. STOCK EXCHANGE LISTING Avient's Common Stock is listed on the New York Stock Exchange, Symbol: AVNT SHAREHOLDER INQUIRIES If you have any questions concerning your account as a shareholder, name or address changes, inquiries regarding stock certificates, or if you need tax information regarding your account, please contact our transfer agent: Equiniti Trust Company 1110 Centre Pointe Curve, Suite 101 Mendota Heights, MN 55120-4100 Phone: 1-855-598-2615 or 1-651-450-4064 www.shareowneronline.com Additional information about Avient, including current and historic copies of Annual Reports on Form 10-K and other reports filed with the Securities and Exchange Commission, is available online at www.avient.com or free of charge from: Investor Relations 33587 Walker Road Avon Lake, Ohio 44012 Phone: 440-930-1000 ANNUAL MEETING The annual meeting of shareholders of Avient will be held virtually on May 11, 2023 at 9:00 a.m.