AVNT-2023.06.30-News Release 1 NEWS RELEASE FOR IMMEDIATE RELEASE Avient Announces Second Quarter 2023 Results • GAAP EPS of $0.24 includes special items and amortization expense • Adjusted EPS of $0.63 exceeded guidance of $0.60, driven by better-than-projected margins in both segments • Full year adjusted EPS guidance of $2.40 maintained reflecting continued weak demand conditions, offset by adjusted EBITDA margins expected to increase from 15.6% to 16.0% for the year • Most recent Sustainability Report published, highlighting the company’s progress on ESG initiatives focused on People, Products, Planet and Performance • Sustainability Day for investors to be held on September 20th will focus on Avient’s sustainable solutions portfolio and the demand trends that will drive long-term growth CLEVELAND – July 27, 2023 – Avient Corporation (NYSE: AVNT), a leading provider of specialized and sustainable solutions, today announced its second quarter 2023 results. Patterson, Chairman, President, and Chief Executive Officer, Avient Corporation. To access Avient’s news library online, please visit www.avient.com/news.

Avient’s chief operating decision maker uses these financial measures to monitor and evaluate the ongoing performance of Avient and each business segment and to allocate resources. F X ) -10% -11% -3% -12% 15 Avient ex. Avient Specialty Other Specialty / 2023E(%) 37 79 89 83 81 76 73 90 82 77 76 74 70 58 22 MULTIPLE EXPANSION Avient Specialty Other Specialty / Note: Avient reflects 2023 adjusted EBITDA guidance of $530M and closing share price of $36.50.

Avient’s chief operating decision maker uses these financial measures to monitor and evaluate the ongoing performance of Avient and each business segment and to allocate resources. Each of such adjustments has not yet occurred, are out of Avient’s control and/or cannot be reasonably predicted. For the same reasons, Avient is unable to address the probable significance of the unavailable information.

1 AVIENT CORPORATION AUDIT COMMITTEE CHARTER Authority The Board of Directors, by resolution dated August 31, 2000, established the Audit Committee.

In 2018 we also outlined how PolyOne defi nes sustainability and the progress we’re making in each of our four focus areas: People, Products, People, Products, Planet and PerformancePlanet and Performance. Our focus on people is advancing our Diversity & Inclusion commitment as well. As of December 31, 2018, we employed approximately 6,600 people.

While our strategy has evolved, we remain committed to being a world-class organization by continuing to focus on People, Products, Planet, and Performance. People Avient has elevated our People strategy in alignment with our new Company strategy, which is captured in the strategic driver "Leadership, Talent and Culture for the Avient of the Future." As of December 31, 2024, Avient employed approximately 9,200 people, 34% of which were located in the U.S. and Canada, 33% were located in EMEA, 26% were located in Asia, and 7% were located in Latin America.

Avient IR Presentation - May 2025 Avient IR Presentation - J.P. Avient Company Officers

Avient IR Presentation - May 2025 Avient IR Presentation - J.P. Avient Company Officers

Avient IR Presentation - May 2025 Avient IR Presentation - J.P. Avient Company Officers