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.

Refer to Attachment 7 Reconciliation of Non-GAAP Financial Measures for details regarding adjustments to previously reported results to arrive to the pro forma financial metrics. 2 Webcast Details The company will host a webcast at 9:00 a.m. For more information, visit www.avient.com. # # # 3 Forward-looking Statements In this press release, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. 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.

Refer to Attachment 7 Reconciliation of Non-GAAP Financial Measures for details regarding adjustments to previously reported results to arrive to the pro forma financial metrics. For more information, visit www.avient.com. # # # http://www.avient.com/ 4 Forward-looking Statements In this press release, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. 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. 5 Non-GAAP Financial Measures The Company uses both GAAP (generally accepted accounting principles) and non-GAAP financial measures.

The reported values are an average of three different adhesion tests. Spiral flow testing of developed products was conducted and is reported in Table 5 along with a conventional TPE and TPV of similar hardness. Data is reported in pounds per linear inch (pli).

Uranusweg 3 8938 AJ Leeuwarden The Netherlands +31(0) 58 216 75 99 info@fiber-line.com ABOUT FIBER-LINE® NOTICE: The information and data contained herein do not constitute sales specifications.

Any additional, different or other terms and/or conditions contained in any purchase order, document, website or other communication by or from Buyer are hereby objected to and rejected by Seller. Any times or dates for delivery communicated by Seller (including those contained in Seller’s order confirmation) are estimates only and are not terms of the sale. The parties undertake to adopt an appropriate level of information security and undertake to report to the opposing party of any incident involving the personal data processed.

Our Code of Conduct is available in over 20 languages and can be found at: https://www.avient.com/company/policies-and-governance/code-conduct Our Ethics Hotline is available 24 hours a day, 7 days a week, by phone or web, for our associates and the community to report any concerns or make inquiries. Those making reports can remain anonymous. https://www.avient.com/company/policies-and-governance/code-conduct https://secure.ethicspoint.com/domain/media/en/gui/49178/index.html Avient Corporation 33587 Walker Road Avon Lake, OH 44012 3 Our Supply Chain At Avient, we commit to comply with laws and regulations supporting human rights such as the California Transparency in Supply Chains Act, the UK Modern Slavery Act, the Dodd-Frank Act requiring disclosures on conflict minerals, and the EU’s - Conflict Minerals Regulation.

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. SUSTAINABILITY • Most recent Sustainability report substantially expanded disclosure on key environmental and social topics. • Aligned with leading reporting frameworks – GRI, SASB, TCFD. Full conformance will be built over subsequent reporting cycles. • Published 2030 performance goals, further enhancing our position as a responsible business creating sustainable, long-term value for its stakeholders. • Scope included legacy PolyOne operations.

Instead of purchasing pre-fabricated acrylic sheet that contained a costly diffusion additive, the Smartbatch solution enabled the customer to reduce its material costs by 50%.

Excelite IM Chemical Foaming Additives: • The only patented liquid CFA in North America and Europe • Supported with customized dosing equipment and technical assistance • Typically contains 70% active CFA content, dispersed in proprietary liquid vehicles LIQUID CFAs PROVIDE A TOP TIER-1 MOLDER WITH A CONSISTENT SOLUTION © 2020, All Rights Reserved Avient Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012 Interested in learning about how Avient can help your business?