All rights reserved. 65536Certificate No: Facility: Avient Corporation - Albany 4 Rothwell Ave, PO Box 300-009 Albany Industrial Estate Auckland 0632 New Zealand Facility: Avient Corporation - Avon Lake (SEM) 554 Moore Road Avon Lake, OH 44012 U.S.A. All rights reserved. 65536Certificate No: Facility: Avient Corporation - Kalol, India Kalol Works, Shed No.18-22 GIDC Estate Kalol, Gujarat 389330 India Facility: Avient Corporation - Konstantynow Lódzkie, Poland ul. Ezcabarte calle H Nº3 Oricain, Navarra 31194 Spain Facility: Avient Corporation - Phan Thong 700/848 Moo 1,Tambol Phan Thong Amata City Chonburi Industrial Estate Phan Thong, Chonburi 20160 Thailand Activity: Manufacture of Masterbatches, Additives, ECCOH, and Compounds for Pigmenting Thermoplastic Activity: Design and Manufacture of Colorants and Additives for Plastics Facility: Avient Corporation - Pogliano, Italy Via Lainate 26 20005, Pogliano Milanese, Milano Italy Facility: Avient Corporation - Randburg, South Africa 329 Tungsten Rd, Strydompark Randburg, Gauteng 2194 South Africa Activity: Design and Manufacture of Colour and Additive Concentrates, Thermoplastic Resins and Specialty Compounds Activity: Manufacture of Masterbatches Facility: NEU Specialty Engineered Materials, LLC 15 Corporate Drive North Haven, CT 06473 U.S.A.

All rights reserved. 65537Certificate No: Facility: Avient Corporation - Albany 4 Rothwell Ave, PO Box 300-009 Albany Industrial Estate Auckland 0632 New Zealand Facility: Avient Corporation - Avon Lake (SEM) 554 Moore Road Avon Lake, OH 44012 U.S.A. All rights reserved. 65537Certificate No: Facility: Avient Corporation - Kalol, India Kalol Works, Shed No.18-22 GIDC Estate Kalol, Gujarat 389330 India Facility: Avient Corporation - Konstantynow Lódzkie, Poland ul. Ezcabarte calle H Nº3 Oricain, Navarra 31194 Spain Facility: Avient Corporation - Phan Thong 700/848 Moo 1,Tambol Phan Thong Amata City Chonburi Industrial Estate Phan Thong, Chonburi 20160 Thailand Activity: Manufacture of Masterbatches, Additives, ECCOH, and Compounds for Pigmenting Thermoplastic Activity: Design and Manufacture of Colorants and Additives for Plastics Facility: Avient Corporation - Pogliano, Italy Via Lainate 26 20005, Pogliano Milanese, Milano Italy Facility: Avient Corporation - Randburg, South Africa 329 Tungsten Rd, Strydompark Randburg, Gauteng 2194 South Africa Activity: Manufacture of Colour and Additive Concentrates, Thermoplastic Resins and Specialty Compounds Activity: Manufacture of Masterbatches Facility: NEU Specialty Engineered Materials, LLC 15 Corporate Drive North Haven, CT 06473 U.S.A.

Management has assessed the effectiveness of PolyOne’s internal control over financial reporting as of December 31, 2017 and has prepared Management’s Annual Report On Internal Control Over Financial Reporting contained on page 63 of this Annual Report, which concludes that as of December 31, 2017, PolyOne’s internal control over financial reporting is effective and that no material weaknesses were identified. Management’s Annual Report On Internal Control Over Financial Reporting The following report is provided by management in respect of PolyOne’s internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934): 1. PolyOne’s management is responsible for establishing and maintaining adequate internal control over financial reporting. 2.

These Terms and Conditions apply to all sales by PolyOne Corporation and its subsidiaries. Los presentes Términos y Condiciones aplican a todas las ventas de PolyOne Corporation y a sus filiales. The United Nations Convention respecting Contracts for the International Sale of Goods shall not apply to transactions under this contract. 16.

PolyOne To participate in the conference call, dial 1-844-835-7433 (domestic) or 1-914-495-8589 (international) and provide conference ID number 3076438.  To listen to this recording, dial 1-855-859-2056 (domestic) or 1-404-537-3406 (international) and enter conference ID number 3076438.

PolyOne To participate in the conference call, dial 1-844-835-7433 (domestic) or 1-914-495-8589 (international) and provide conference ID number 99045455.  To listen to this recording, dial 1-855-859-2056 (domestic) or 1-404-537-3406 (international) and enter conference ID number 99045455.

To participate in the conference call, dial 1-844-835-7433 (domestic) or 1-914-495-8589 (international) and provide conference ID number 97228054.  To listen to this recording, dial 1-855-859-2056 (domestic) or 1-404-537-3406 (international) and enter conference ID number 97228054. PolyOne

To participate in the conference call, dial 1-844-835-7433 (domestic) or 1-914-495-8589 (international) and provide conference ID number 51684828.  To listen to this recording, dial 1-855-859-2056 (domestic) or 1-404-537-3406 (international) and enter conference ID number 51684828. PolyOne

PolyOne To participate in the conference call, dial 1-844-835-7433 (domestic) or 1-914-495-8589 (international) and provide conference ID number 8783669.  To listen to this recording, dial 1-855-859-2056 (domestic) or 1-404-537-3406 (international) and enter conference ID number 8783669.

To participate in the conference call, dial 1-844-835-7433 (domestic) or 1-914-495-8589 (international) and provide conference ID number 86775774.  To listen to this recording, dial 1-855-859-2056 (domestic) or 1-404-537-3406 (international) and enter conference ID number 86775774. PolyOne