Sanders is Senior Vice President, General Counsel and Secretary at Avient Corporation, an innovator of materials solutions that help customers succeed while enabling a sustainable world. Sanders joined Avient in April 2024 and has responsibility for all legal functions, including contracts and transactions, M&A, compliance, labor relations, digital information, privacy, and intellectual property. Avient Corporation • 33587 Walker Road • Avon Lake, Ohio 44012 • 440.930.1000 • www.avient.com

PEDERSON Senior Vice President, President of Specialty Engineered Materials Chris Pederson is Senior Vice President and President of Specialty Engineered Materials at Avient Corporation, an innovator of materials solutions that help customers succeed while enabling a sustainable world. Just prior to joining Avient in 2018, he was Vice President of Strategy at Hexcel Corporation, responsible for the company’s M&A strategy and execution. Avient Corporation • 33587 Walker Road • Avon Lake, Ohio 44012 • 440.930.1000 • www.avient.com

Handelsregisteramt des Kantons Basel-Landschaft BASEL LANDSCHAFT lpt Firmennummer cHE-112.279.714 Rechtsnatur Gesellschaft mit beschränkter Haft ung Eintragung 18.03.2005 Löschung Ubertrag CH-280.3.008.468-3 von: CH-280.3.008.468-3/a auf: lllllililililIil ilril il Alle Eintragungen Ei Lö Firma Rel Sitz elarian*ebsties feoatings-AG @ Avient Switzerland GmbH (Avient Switzerland LLC) 1 Muttenz Ref Stammkap. I SHAB Arlesheim, 04.1 2.2O2O 07 :34 Fortsetzung auf der folgenden Seite Handelsregisteramt des Kantons Basel-Landschaft BASEL LANDSCHAFT Jlt cHE-112.279.714 Avient Switzerland GmbH Muttenz 2 Alle Eintragungen Ref TR-Nr TR-Datum SHAB SHAB-Dat.

Number: BC1228188 CERTIFICATE OF CHANGE OF NAME BUSINESS CORPORATIONS ACT I Hereby Certify that POLYONE CANADA ULC changed its name to AVIENT CANADA ULC on 2021年1月15日 at 12:13 PM Pacific Time.

Microsoft Word - Avient_SecurityPolicy_2020 SECURITY POLICY Avient Corporation places a high priority on protecting the security of our people, our buildings and equipment, and our proprietary information, technology and systems. It is the responsibility of each person at Avient, including contractors, suppliers, and visitors, to follow all security procedures, to remain aware of and report all possible security threats, to remain committed to working in a secure and safe manner, and to be prepared to respond to emergencies safely and effectively.

SECURITY POLICY Avient Corporation places a high priority on protecting the security of our people, our buildings and equipment, and our proprietary information, technology and systems. It is the responsibility of each person at Avient, including contractors, suppliers, and visitors, to follow all security procedures, to remain aware of and report all possible security threats, to remain committed to working in a secure and safe manner, and to be prepared to respond to emergencies safely and effectively.

At Avient, we have engineered polymers, standard and high-temperature colorants and additives, and high-performance fibers for accelerating deployment, delivering reliability, boosting function, and enhancing product protection. Avient makes no warranties or guarantees respecting suitability of either Avient’s products or the information for your process or end-use application. AVIENT MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, either with respect to the information or products reflected by the information.

Handelsregisteramt des Kantons Basel-Landschaft BASEL LAN DSCHAFT $t Firmennummer cHE-480.567.505 Rechtsnatur Aktiengesellschaft Eintragung 09.09.2019 Löschung U be rtra g CH-280.3.023.7 7 7 -6 von: auf: llillllll llll ll illllll lll A e E n'rasunsen Ei Lö Firma Rel Sitz I Avient Colorants Switzerland AG (Avient Colorants Switzerland Ltd) 1 Muttenz Ei Lö Aktienkapital (CHF) Liberierung (CHF) Aktien-Stückelung Ei Lö Domiziladresse 1 100'000.00 100'000.00 100 vinkulierte Namenaktien zu CHF 1'000.00 1 Rothausstrasse 61 4132 Muttenz Ei Lö Zweck Ei Lö weitere Adressen 1 Die Gesellschaft bezweckt den Erwerb, die Ver"waltung und Veräusserung von Beteiligungen an Unternehmen, die auf dem Gebiet der Chemie und verwandten Gebieten tätig sind, insbesondere im Bereich Masterbatches und Kunststoffe. LANDSCHAFT I cHE480.567.505 Avient Colorants Switzerland AG Muttenz 2 Alle Eintragungen Ei Ae Lö Personalangaben Funktion Zeichnungsart 4 b 7m 4m 7m 6m horigef, in+irstetden Mer*leihNsrberfdeutseherStaatsangehöriger, in Kronberg (DE) rStaatsangehd'riger-in Cuxen@+U) James, Robert Kenneth, amerikanischer Staatsangehöriger, in Ohio (US) Garratt, Michael Alexander, amerikanischer Staatsangehöriger, in Luxemburg (LU) Tamura, Mauricio Massanobu, portugiesischer Staatsangehöriger, in Birsfelden Merklein, Norbert, deutscher Staatsangehöriger, in Rheinfelden l:M.des Venffattungsrates lAltgtietres Veftvattungsrates l+tgl+e#es Venffattungsrates Präsident des @ Kollektivunterschrift zu zweien Ehz ehrntersehrift Arlesheim, 02.12.2020 11:46 BM Dieser Auszug aus dem kantonalen Handelsregister hat ohne die nebenstehende Originalbeglaubigung keine Gültigkeit.

No. 0962.01) 09/05/2023 Page 1 of 1 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 AVIENT CORPORATION 80 North West Street Norwalk, OH 44857 Craig Polta Phone: 419 660 4278 MECHANICAL Valid To: 2025年9月30日 Certificate Number: 0962.01 In recognition of the successful completion of the A2LA evaluation process, accreditation is granted to this laboratory to perform the following tests on plastics: Test Method(s) Test Name ASTM D256; ISO 180 Notched Izod ISO 179 (1eA) Determination of Charpy Impact ASTM D523 Gloss ASTM D618 (Method A) Conditioning of Test Specimens ASTM D792 (Method A) Specific Gravity ASTM D1238 (Method B) Melt Flow Rate ASTM D3012 Thermal Oxidative Stability ASTM D3641 Injection Molding Test Specimens FMVSS 302 Flammability ASTM E1331; SAE J1545 Spectrophotometric Color Difference SAE J1885 (Rev. Accredited Laboratory A2LA has accredited AVIENT CORPORATION Norwalk, OH for technical competence in the field of Mechanical Testing This laboratory is accredited in accordance with the recognized International Standard ISO/IEC 17025:2017 General requirements for the competence of testing and calibration laboratories.

REPÚBLICA FEDERATIVA DO BRASIL CADASTRO NACIONAL DA PESSOA JURÍDICA NÚMERO DE INSCRIÇÃO 02.166.983/0001-66 MATRIZ COMPROVANTE DE INSCRIÇÃO E DE SITUAÇÃO CADASTRAL DATA DE ABERTURA 03/10/1997 NOME EMPRESARIAL AVIENT BRASIL LTDA.