IR Deck - AVNT-2024.06.30 (Earnings) AVIENT CORPORATION S E C O N D Q U A R T E R 2 0 2 4 R E S U L T S A N D 2 0 2 4 F I N A N C I A L G U I D A N C E (NYSE: AVNT) A U G U S T 6 , 2 0 2 4 D I S C L A I M E R Forward-Looking Statements Certain statements contained in or incorporated by reference into this presentation constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. A reconciliation of each historical non-GAAP financial measure with the most directly comparable GAAP financial measure is attached to this presentation which is posted on our website at www.avient.com. EBITDA Margin 16.9% +100 bps Q 2 2 0 2 4 R E S U L T S Q2 2024 PERFORMANCE VS.

Avient Corporation • 33587 Walker Road • Avon Lake, Ohio 44012 • 440.930.1000 • www.avient.com

Avient Corporation • 33587 Walker Road • Avon Lake, Ohio 44012 • 440.930.1000 • www.avient.com

Avient Corporation • 33587 Walker Road • Avon Lake, Ohio 44012 • 440.930.1000 • www.avient.com

https://www.avient.com/investors https://edge.media-server.com/mmc/p/tay7mbuw/ https://www.avient.com/investors https://register-conf.media-server.com/register/BI648915d05d0c44c4bdef681472840ace https://www.avient.com/investors/events-presentations 3 Non-GAAP Financial Measures The Company uses both GAAP (generally accepted accounting principles) and non-GAAP financial measures. To access Avient’s news library online, please visit www.avient.com/news. 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 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.

Avient Corporation • 33587 Walker Road • Avon Lake, Ohio 44012 • 440.930.1000 • www.avient.com

Avient Corporation • 33587 Walker Road • Avon Lake, Ohio 44012 • 440.930.1000 • www.avient.com

MOVING HIGH PERFORMANCE FIBERS FORWARD CARBON FIBER CARBON FIBER DATA Standard Modulus Property UOM Value Breaking Tenacity g/d 23.0 Specific Gravity Ratio 1.80 Elongation @ Break % 1.5 Tensile Modulus g/d 1480 Moisture Regain* % 0 Creep** % 0 Shrinkage*** % 0 Melt Point °C None Decomposition Temp. Contact your FIBER-LINE® representative for exact product details which conform to your specific requirements 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.

The new Edgetek™ PKE and LubriOne™ PKE series combine excellent chemical and hydrolysis resistance to meet the challenges of harsh applications, such as those found in chemical, fuel contact, or high- moisture environments. These reinforced grades are targeted at applications in the industrial, electronics and transportation markets like pipes and tubing, electrical battery components, and under- the-hood fuel or chemical contact components. PSIC: 0 2.

For more information, visit www.avient.com. To access Avient’s news library online, please visit www.avient.com/news. 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.