Corporate Media Contact: Kyle G. Media Relations Contacts Company Officers

Contact point for questions regarding the report https://www.avient.com/contact-us-now https://www.avient.com/company/sustainability/planet/environmental-stewardship

Vermijd daarom onnodig contact met concurrenten. 3. subject= http://avient.ethicspoint.com http://www.Avient.com/company/policies-and-governance/ethics-hotline http://www.Avient.com/company/policies-and-governance/ethics-hotline 1. Vermijd onnodig contact met concurrenten. 2.

The company delivered second quarter GAAP EPS of $0.92 compared to $0.74 in the prior year quarter. The question and answer session will follow the company’s presentation and prepared remarks. For the same reasons, the Company is unable to address the probable significance of the unavailable information. # # # Investor Relations Contact: Giuseppe (Joe) Di Salvo Vice President, Treasurer and Investor Relations Avient Corporation +1 440-930-1921 giuseppe.disalvo@avient.com Media Contact: Kyle G.

The company will host a webcast at Investor Relations Contact: Giuseppe (Joe) Di Salvo, Vice President, Treasurer and Investor Relations, Avient Corporation, +1 440-930-1921, giuseppe.disalvo@avient.com; Media Contact: Kyle G. Investor Contacts

There will be a question and answer session following the company’s presentation and prepared remarks. For the same reasons, the Company is unable to address the probable significance of the unavailable information. Investor Relations Contact: Giuseppe (Joe) Di Salvo Vice President, Treasurer and Investor Relations Avient Corporation +1 440-930-1921 giuseppe.disalvo@avient.com Media Contact: Kyle G.

The company reported second quarter sales of $849.7 million compared to $824.4 million in the prior year quarter. The question and answer session will follow the company’s presentation and prepared remarks. You are advised to consult any further disclosures we make on related subjects in our reports on Form 10-Q, 8-K and 10-K that we provide to the Securities and Exchange Commission. 6 Investor Relations Contact: Giuseppe (Joe) Di Salvo Vice President, Treasurer and Investor Relations Avient Corporation +1 440-930-1921 giuseppe.disalvo@avient.com Media Contact: Kyle G.

as applicable) 4.2.2 Customer Description 4.2.3 Manufacturer’s Product Code 4.2.4 Manufacturer's Lot Number 4.2.5 Quantity and Units (Example 25 lbs.) 4.2.6 Company Name 4.2.7 Date of Manufacture 4.2.8 Expiration Date (as applicable) 5.0 SUPPORTING DOCUMENTATION 5.1 Certification: Each shipment of product will be accompanied by a Certification that, at the time of shipment, the material conforms to the Product Specifications. 5.1.1 Certification document will include: 5.1.1.1 Customer Part Number 5.1.1.2 Customer Purchase Order Number 5.1.1.3 Customer Material Description 5.1.1.4 Manufacturer's Lot Number 5.1.1.5 Total quantity shipped (with units) 5.1.1.6 Test values (as applicable) 5.1.2 Certification will be sent with each product shipment, addressed to the Customer’s shipping location and/or electronically sent to appropriate Customer contact. 5.1.3 The Certification document may contain test values conducted by NEU on the product for those characteristics listed under certification. 5.2 Safety Data Sheets: A Safety Data Sheet will be made available upon request or may be available on NEU’s website. Such inquiries by NEU do not transfer supplier control responsibilities to NEU. 8.0 CHANGE NOTIFICATION 8.1 General Notification 8.1.1 NEU will notify the Customer of the following changes to all NEU compounded materials: 8.1.1.1 Product nomenclature 8.1.1.2 Product Specifications 8.1.1.3 Manufacturing site 8.1.2 All notifications will be given to the purchasing contact at the purchasing locations of the products supplied.

Rolatube, an innovative company with a fresh approach to product design, is the world’s only bistable, rollable composite manufacturer. The thermoplastic polymer base resin used also enables recyclability to support the company’s sustainability goals. If you’d like assistance with material selection for your applications, contact us.

The company is dedicated to serving customers in diverse industries around the globe, by creating value through collaboration, innovation and an unwavering commitment to excellence. Media Relations Contacts Company Officers