Presented this 05th day of September 2023. _______________________ Mr.

AVNT-2023.03.31-News Release 1 NEWS RELEASE FOR IMMEDIATE RELEASE Avient Announces First Quarter 2023 Results • First quarter sales of $846 million in line with guidance • GAAP EPS of $0.23 includes special items primarily related to restructuring costs as detailed in Attachment 3 • Adjusted EPS of $0.63 exceeded guidance of $0.55, driven by better-than-projected margins in both segments • Full year adjusted EBITDA and EPS guidance of $530 million and $2.40, respectively, maintained given present macroeconomic uncertainty • Sustainability Investor Day to be held on September 20th will highlight Avient’s sustainable solutions portfolio and growth opportunities CLEVELAND – May 3, 2023 – Avient Corporation (NYSE: AVNT), a leading provider of specialized and sustainable solutions, today announced its first quarter 2023 results. Upcoming Sustainability Investor Day Commenting on the September 20th sustainability investor day, Mr.

Climate change-related responsibilities reside with this position because of its responsibility for managing day-to-day execution of sustainability-related strategy and goals. Add row] (5.12) Indicate any mutually beneficial environmental initiatives you could collaborate on with specific CDP Supply Chain members. Select from: ☑ No (5.12.11) Please explain Very new program [Add row] (5.13) Has your organization already implemented any mutually beneficial environmental initiatives due to CDP Supply Chain member engagement?

T-Spray™ (quaternary ammonium) CavidCide® (Isopropanol) Cidex Plus® (Glutaraldehyde) Acceptable 90–100% Resilience HC Resilience HC Resilience HC Marginal 50–90% PC+PBT PC+PBT PC+ABS PC+PET PC+PBT Poor

- The list of officers for this entity is available for online authentication within 30 days from the date of purchase of this Business Profile.

This technology offers manufacturing efficiencies versus other crosslinking methods: • Reduction in logistics management: No secondary steps after manufacturing; no need for E-beam radiation for effective crosslinking • Rapid ambient curing: Typically in less than 15 days depending on the climatic condition, wall thickness and catalyst level • No additional capital investment: The material can be processed on a conventional extrusion line • Easy handling: ECCOH XL 8001 is used with 2.5–5% of catalyst masterbatch • No pre-drying: No need to pre-dry the material if it is stored correctly PRODUCT BULLETIN KEY CHARACTERISTICS Avient’s ECCOH line of highly flame retardant, non-halogenated materials limits the emission of corrosive gases when burning.

Avanti a me Dottor Edmondo TODESCHINI, Notaio in Milano ed iscritto presso il Collegio Notarile di Milano, è presente il signor: = Edoardo CORÒ, nato a Padova il 10 novembre 1994, domiciliato a Milano, Via Filippo Turati n. 16/18, presso lo studio legale Jones Day.

Presented this 30th day of March 2018. _______________________ Vice President, Accreditation Services For the Accreditation Council Certificate Number 0514.02 Valid to December 31, 2019 Revised October 08, 2019 0514-02.pdf SCOPE OF ACCREDITATION TO ISO/IEC 17025:2005 Test Method or Standard: Test Description: 0514-02c.pdf

Presented this 28th day of February 2020. _______________________ Vice President, Accreditation Services For the Accreditation Council Certificate Number 0514.02 Valid to December 31, 2021 Revised September 21, 2021 0514-02s SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 Test Method or Standard: Test Description: 0514-02c

The goal of the collaboration was to create ballistic protection that is lightweight, portable, and can be constructed in hours rather than days.