Revenue increased 12% (6.5% organic) driven by continued momentum from investments in commercial resources and specialty acquisitions - Reported

Avient Expands 2030 Sustainability Goals and Highlights ESG Impact in Latest Sustainability Report

For more information on changes to the EH&S Committee in 2025, refer to the Governance section of the Sustainability Report.

Certification cycle start date: 22 February 2023 Subject to the continued satisfactory operation of the organization’s Management System, this certificate expires on: 10 January 2026 Expiry date of previous cycle: : 10 January 2023 Certification audit date: 21 November 2022 Original certification date: 11 January 2017

Fourth quarter and full year GAAP earnings per share (EPS) were $0.52 and $1.84, compared to $0.30 and $0.83 in the prior year, respectively. Visit www.avient.com to learn more. 5 Forward-looking Statements In this press release, statements that are not reported financial results or other historical information are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Management excludes intangible asset amortization from adjusted EPS as it believes excluding acquired intangible asset amortization is a useful measure of current period earnings per share.

GAAP earnings per share (EPS) from continuing operations were ($0.30) in the third quarter of 2022 compared to $0.37 in the prior year quarter. For more information, visit www.avient.com/. http://www.avient.com/ 5 Forward-looking Statements In this press release, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. 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 Non-GAAP Financial Measures The Company uses both GAAP (generally accepted accounting principles) and non-GAAP financial measures.

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. The non-GAAP financial measures include: Organic Performance (which excludes the impact of foreign exchange), Adjusted Earnings Per Share, Adjusted EBITDA, and Adjusted EBITDA margins. Q1 2024 ORGANIC FX AS REPORTED Sales $827M 1.8% (2.1%) (0.3%) Adj.

Ltd Business Registration Number: 91320505799067336K Registered/ Operation Address: 13 Plant, No.855, Zhujiang Road, Suzhou New District, Jiangsu Province, China by reason of its Environmental Management System has been awarded this certificate for compliance with the standard ISO 14001:2015 The Environmental Management System Applies in the following area: Production and Related Management Activities of Plastic Colorant & Additive (UV Blockers, Anti-Aging,Anti-Oxidation) Certified since: June 6, 2012 Valid from: January 17, 2024 Valid until: January 7, 2027 the expiry date of last certification cycle: January 7, 2024 the date ofrecertification audit: December 21, 2023 to December 22, 2023 After a surveillance cycle, the certificate is valid only when used together with an Acceptance Notice of Surveillance Audit issued by CQC.

Slide 1 PolyOne Corporation Page 1 PolyOne Innovation Day InterContinental Hotel New York, New York May 29, 2014 PolyOne Corporation Page 2 Forward-Looking Statements  In this presentation, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. 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. The non-GAAP financial measures include: adjusted EPS, earnings before interest, tax, depreciation and amortization (EBITDA), adjusted EBITDA, net debt, Specialty platform operating income, Specialty platform gross margin percentage, adjusted operating income, return on invested capital, net debt/ EBITDA, and the exclusion of corporate charges in certain calculations.

PolyOne Corporation Page 1 Investor Day May 18, 2015 PolyOne Corporation Page 2 Forward-Looking Statements  In this presentation, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. 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. Richardson 4:30 2020 Platinum Vision and Q&A Robert M.