AVNT-2021.06.30-News Release 1 NEWS RELEASE FOR IMMEDIATE RELEASE Avient Announces Registration Details for December 9th Investor Day CLEVELAND – November 3, 2021 – Avient Corporation (NYSE: AVNT), a leading provider of specialized and sustainable material solutions, will host an Investor Day for investment professionals on Thursday, December 9, 2021, from 8:00 a.m. to 1:00 p.m., at the New York Marriott Marquis hotel. At our 2021 Investor Day, we will take a deeper dive into our how we create value for our stakeholders. Investor Day participants will hear presentations from Mr.

Use only approved and secured methods when sharing Confidential Data and ensure recipients have authorization to receive Confidential Data and/or have obtained prior approval from User’s manager; and Obtain approval from Avient’s Information Technology department before procuring, installing, connecting, using, or decommissioning software, systems, applications, or non-Avient devices to or from Information Systems, including, but not limited to, on premise and cloud-based systems. Revealing account usernames, passwords, or other Personal Data to others or allowing use of Information Systems by others, including family and other household members;

Social • Support basic human rights and not use any slave labor, child labor or labor from human trafficking Suppliers must keep a written accounting of all payments, including any gifts, meals, entertainment, or anything else of value, made on behalf of Avient. Accounting records should be available to Avient upon request

Social • Support basic human rights and not use any slave labor, child labor or labor from human trafficking Suppliers must keep a written accounting of all payments, including any gifts, meals, entertainment, or anything else of value, made on behalf of Avient. Accounting records should be available to Avient upon request

Use of non-GAAP measures This presentation includes the use of both GAAP (generally accepted accounting principles) and non-GAAP financial measures. Solutions from across 3. Solutions from across all Avient 3.

ColorMatrix™ Ultimate™ UV Light Barrier for PET effectively blocks ultraviolet light transmission, protecting product integrity, without impacting the circularity. Simplify the process to develop color in recycled resin for L’Oréal to achieve global color consistency, while working towards their 2030 objective to have 100% of the plastics used in its packaging be made from recycled or bio-based material.

Devices that rely on 5G are sparking innovation in industries ranging from telecommunications and consumer electronics to automotive and healthcare. Additionally, ECCOH™ low smoke and fume non-halogen materials are well suited for fiber optics and communication cables; and Fiber-Line™ Swellcoat™ water blocking yarns enable cable designers to reduce cable footprint with higher fiber count cables for increased data transmission capabilities.

Applications ranging from structural to cosmetic in areas such as bulkheads, decking, and cabinetry can benefit from the increased design flexibility these new panels generate. We are investing heavily in composite innovation, and these recent marine applications highlight how customers benefit from the next generation of metal, glass and wood replacement," said

Since the introduction of styrene block copolymer four decades ago, newer molecules with varied chemistry have been introduced to the market. It is difficult to make a judgement of clarity from the difference of morphology based on TEM pictures. Silicone replacement for baby nipple Majority of baby nipple/pacifier is made from silicone and natural rubber.

APPLICATION UNDERSTANDING We have designers and engineers who are well-equipped to support customers from conceptualization through production. This enables us to evaluate how different materials perform and to establish best practice processing parameters. Processing conditions can cause material properties to shift from the values stated in the information.