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Connect with a Product Expert Request Product Documentation Sample Request Supplier / Vendor Support Investor Relations Inquiry Other / I Don't Know Careers Inquiry Order Request Quote Request Existing Order Support Account Manager Contact Billing / Payment Inquiry

Connect with a Product Expert Request Product Documentation Sample Request Supplier / Vendor Support Investor Relations Inquiry Other / I Don't Know Careers Inquiry Order Request Quote Request Existing Order Support Account Manager Contact Billing / Payment Inquiry

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Level of Assurance and Qualifications:  Limited  This verification used a materiality threshold of ±5% for aggregate errors in sampled data for each of the above indicators GHG Verification Methodology: Evidence-gathering procedures included, but were not limited to:  Interviews with relevant personnel of Avient and their consultant;  Review of documentary evidence produced by Avient;  Review of Avient data and information systems and methodology for collection, aggregation, analysis and review of information used to determine GHG emissions; and  Audit of sample of data used by Avient to determine GHG emissions. Page 3 WATER RESOURCES • ENVIRONMENTAL SERVICES • INDUSTRIAL HYGIENE  •  SAFETY  •  SUSTAINABILITY  Apex Companies, LLC • (800) 733‐2739 • www.apexcos.com  Statement of independence, impartiality and competence Apex is an independent professional services company that specializes in Health, Safety, Social and Environmental management services including assurance with over 30 years history in providing these services. We consent to the release of this declaration by you to the public or other organizations but without accepting or assuming any responsibility or liability on our part to any other party who may have access to this declaration.

Microsoft Word - Final - 7.29 1158am AVNT-2021.06.30-News Release (002) 1 NEWS RELEASE FOR IMMEDIATE RELEASE Avient Announces Record Second Quarter 2021 Results, Increases Full Year Guidance • GAAP EPS from continuing operations increased to $0.74 from $0.25 in the prior year quarter • Sales increased 42% to $1.235 billion and adjusted EPS increased 107% to $0.87 driven by very strong demand conditions in nearly all end markets • Full year adjusted EPS guidance for 2021 increased from $2.80 to $3.00, representing 55% growth over the prior year adjusted EPS of $1.93 • Investor Day to be held December 9th in New York City will highlight sustainable solutions portfolio and innovation to drive future growth CLEVELAND – July 30, 2021 – Avient Corporation (NYSE: AVNT), a leading provider of specialized and sustainable material solutions, today reported its second quarter results for 2021. See Attachment 3 for a definition and summary of special items. See Attachment 3 for a definition and summary of special items.

X04000340302 SCREENTIGHT SAMPLE X0400333501 TACO MAETAL SAMPLE Sales Order Confirmation - under "Material Header"

CLEVELAND, Jan. 28, 2021 /PRNewswire/ -- Avient Corporation (NYSE: AVNT), a leading provider of specialized and sustainable material solutions, wil CLEVELAND, Jan. 14, 2021 /PRNewswire/ -- Avient Corporation (NYSE: AVNT), a leading provider of specialized and sustainable material solutions, Avient Releases Sustainability Report, Announces Sustainability Goals for 2030