Avient's investor day will be held at the New York Stock Exchange beginning at 10:00 a.m. eastern standard time. About Avient Avient Corporation (NYSE: AVNT) provides specialized and sustainable materials solutions that transform customer challenges into opportunities, bringing new products to life for a better world. 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.

To learn more, please contact Avient at +1.844.4AVIENT (1.844.428.4368) or visit www.avient.com. © 2020, All Rights Reserved Avient Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012 LIGHTER WEIGHT, GREATER DURABILITY FOR LUXURY VEHICLES THE CHALLENGE DENSO, a leading supplier of advanced automotive technologies, systems and components for the world’s major automakers, approached Avient looking for material science expertise and development. This global reach also allowed Avient to respond quickly to mold trials, and eliminate import and shipping challenges. THE IMPACT Through a combination of its global footprint, expert technical services, and local production, Avient accepted DENSO’s challenge and responded with a new customized formulation that exceeded performance requirements, eliminated overmolding, and reduced cycle times.

INTRODUCTION In the last decade, overmolding thermoplastic elastomers (TPEs) onto rigid substrates has been a exploding trend in product differentiation in various consumer applications(1). NYLON MOLDING PROCESS Bonding is also affected by mold design and nylon molding conditions. Page 10 of 11 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 Pe el fo rc e, N /m m 60 A- I 60 A- II 75 A- III 55 A- IV 65 A- IV 50 A- V I 70 A- VI I TPE Grade Zytel 409AHS 260C 276C 288C Figure 8.

February 10, 2015 Jul 10, 2025 Avient Announces Quarterly Dividend...

KEY CHARACTERISTICS • Consistent coloring and improved homogenization with the polymer for more efficient processing and waste reduction • Opaque PSU/PES/PPSU masterbatches available with shorter lead times in a range of readily available standard colors • Minimum order quantities as low as 5kg (10lbs) for improved inventory control • Robust colorant formulations mean zero disruption to existing molding processes, allowing manufacturers to bring products to market faster and without investing in new machinery PRODUCT BULLETIN 1.844.4AVIENT www.avient.com Product Code Color LDR* Pantone No.** 650.00 Black 10% 433C 650.01 Brown 10% 7615C 650.02 Red 10% 186C 650.03 Orange 5% 1495C 650.04 Yellow 10% 142C 650.05 Green 10% 2248C 650.06 Blue 10% 278C 650.07 Violet 20% 2073C 650.08 Grey 10% Cool Gray 7C 650.09 White 10% RAL9010 PPSU RESINS Product Code Color LDR* Pantone No.** 660.00 Black 6% Black 6C 660.01 Brown 6% 7582C 660.02 Red 8% 7620C 660.03 Orange 6% 1505C 660.04 Yellow 6% 124C 660.05 Green 6% 348C 660.06 Blue 6% 660C 660.07 Violet 15% 7664C 660.08 Grey 6% Cool Gray 8C 660.09 White 6% RAL9010 PSU RESINS Product Code Color RAL No.* S837.0 Black 9005 S837.1 Brown 8011 S837.2 Red 3002 S837.3 Orange 2004 S837.4 Light Yellow 1016 S837.5 Green 6032 S837.6 Blue 5015 S837.7 Violet 4005 S837.8 Grey 7037 S837.9 White 9016 PES RESINS Copyright © 2021, Avient Corporation. Avient makes no warranties or guarantees respecting suitability of either Avient’s products or the information for your process or end-use application. AVIENT MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, either with respect to the information or products reflected by the information.

during an otherwise incredibly challenging year.  provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. 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

In doing so, we innovate solutions that help our customers overcome their challenges or capitalize on opportunities provided by the fast- changing world and secular trends. By intersecting our broad portfolio of technologies with the product roadmaps of our customers, we help create differentiated and high-performance products that make the world better and more sustainable. 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.

Avient Announces Second Quarter 2025 Results... Jul 10, 2025 Avient Announces Quarterly Dividend...

DB4208 YELLOW HT (9250-033) NEW MOLD REL TURQUOISE TOP Challenge Accepted

Specific continuous-fiber thermoplastic technologies include: •    Multi-axial and multilayer tapes, laminates and sheets up to 10’ wide •    Sandwich panels in unlimited lengths, up to 6” thick and 10’ wide •    High volume production capacity Jul 10, 2025 Avient Announces Quarterly Dividend...