Homepage // News Center // PolyOne Highlights New Geon™ Cellular Vinyl at Plastics Extrusion World Expo CLEVELAND – May 6, 2019 – This week at the Plastics Extrusion World Expo, PolyOne is showcasing several advancements in vinyl technology, including the launch of Geonä Cellular Vinyl for trim and molding applications. PolyOne will exhibit in booth 425 at Plastics Extrusion World Expo (Cleveland, OH), May 8-9.

PROFILE/SHEET EXTRUDER R A I L S A N D K I C K P L A T E S • Convert existing PVC profile and sheet rails and kick plates to polyolefin resin to meet Class A fire safety (ASTM E84) • Provide a system that meets healthy building certifications and approvals • Utilize a more sustainable flame retardant technology, removing brominated or halogenated flame retardants from the environment • Achieve non-compromising performance in aesthetics, impact, dimensional stability, CLTE, and E84 testing • Provided broad flame retardant platform, backed by extensive application and industry expertise, to meet global flammability standards • Has largest UL94 recognized Prospector membership with HB, V-0, V-1, V-2 and 5VA/5VB ratings, and broad glow wire performance products • Included in-house UL certified labs and manufacturing locations to perform UL94 material sampling and testing • Supported application development to meet fire safety standards, address current or emerging healthy building codes, smart home requirements, and LEED credits • Offered custom formulations in small lot quantities Cesa™ Flam Non-Halogen Flame Retardants KEY REQUIREMENTS WHY AVIENT?

Homepage // News Center // PolyOne Recognized at SPE Automotive Innovation Awards for New All-Plastic Temperature Sensor DETROIT – PolyOne was recognized last night at the SPE Automotive Innovation Awards ceremony for its participation in developing an all-plastic temperature sensor, which will be commercially introduced on the 2015 Ford Edge.

Solutions for co-extruded protective film, PET photovoltaic backsheet and PETG sleeves. Plastics provide tremendous benefits to our quality of life, but the challenges of plastic must not be ignored.   Plastics provide tremendous benefits to our quality of life, but the challenges of plastic must not be ignored.  

Homepage // News Center // Avient Debuts Next-Generation Solutions to Facilitate Use of Recycled Plastics in Packaging Applications A first of its kind for the plastics industry, this internally developed solution also calculates how much PCR content can be added to an existing application without affecting its signature color.  Avient employs approximately 8,700 associates and is certified ACC Responsible Care®, a founding member of the Alliance to End Plastic Waste and certified Great Place to Work®.  

Homepage // News Center // Avient Joint Study with Borealis Reveals Wide Range of Color Options for Recycled Plastics K 2022, the world’s largest plastics industry event, will take place from 19 to 26 October 2022 in Düsseldorf, Germany. Avient is certified ACC Responsible Care®, a founding member of the Alliance to End Plastic Waste and certified Great Place to Work®.  

KEY CHARACTERISTICS • Eliminates secondary coating operations • Easily delivers the last drop out of a container • Reduces residual content • Reduces production costs • Won’t impact visual clarity • Non-PFAS formulations available APPLICATIONS Cesa Low Retention Additives are suitable for any olefinic application that would benefit from the ability to repel water or fluids, including: • Labware, including pipette tips • Monofilaments • Industrial fixtures • Woven fibers • Platform mats • Molded optical lenses • Medical devices • Extruded films • Carpet fibers • Textiles PRODUCT BULLETIN

Annual Report | 2024 2 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, LLC 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 Avient Corporation 33587 Walker Road Avon Lake, Ohio 44012 Phone: 1-440-930-1000 ANNUAL MEETING The annual meeting of Avient will be held virtually via live webcast at 9:00 a.m.

BULLOCK, SECRETARY OF STATE OF THE STATE OF DELAWARE, DO HEREBY CERTIFY THE ATTACHED IS A TRUE AND CORRECT COPY OF THE CERTIFICATE OF AMENDMENT OF “CLARIANT PLASTICS & COATINGS USA LLC”, CHANGING ITS NAME FROM "CLARIANT PLASTICS & COATINGS USA LLC" TO "AVIENT COLORANTS USA LLC", FILED IN THIS OFFICE ON THE ELEVENTH DAY OF JANUARY, A.D. 2021, AT 10:39 O`CLOCK A.M.

Further, several injection points can be added to run multiple colors or additives at the same time on a single extruder to enhance flexibility.