Philip G.

AQUARIUS™ SB - BLUE G CONCENTRATE 2.

Certifying Official (or authorized delegate) Darryl Chartrand Report Submitted by Najat Kamal About us News Contact us Stay connected HEALTH healthycanadians.gc.ca TRAVEL travel.gc.ca SERVICE CANADA servicecanada.gc.ca JOBS jobbank.gc.ca ECONOMY actionplan.gc.ca Canada.gc.ca Terms and Conditions Transparency Version: 3.13.0 I, the Certifying Official or authorized delegate, agree with the statements above and acknowledge that by pressing the "Submit Report(s)" button, I am electronically certifying and submitting the facility report(s) for the identified company to its affiliated programs.

Each version of this Notice is identified at the bottom of the page. 11.

& Canada 40% EMEA 38% Asia 17% Latin America 5% Q1 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS Consumer 18% Packaging 23% Healthcare 7% Industrial 16% Building and Construction 10% Defense 6%Telecommunications 4% Energy 5% END MARKET REVENUE (1) Total company sales and adjusted EBITDA of $846M and $134M, respectively, include intercompany sales eliminations and corporate costs $537M $91M $310M $64M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $134M$846M (1) 14 Transportation 11% Q1 2023 SALES BY REGION Yo Y C H A N G E ( E X C L . Avient Specialty Formulators Other Specialty / Chemical Companies 2023E(%) 37 79 89 83 81 76 73 90 82 77 76 74 70 58 22 A vi en t K W R P P G F U L A V Y R P M F M C C E H X L A S H E C L H U N E M N S C L MULTIPLE EXPANSION Avient Specialty Formulators Other Specialty / Chemical Companies Source: Peer data per Bloomberg as of May 31, 2023 Note: Avient reflects 2023 adjusted EBITDA guidance of $530M and closing share price of $36.50. Avient 2011 and 2018 valuations reflect trailing 12 months EBITDA at December 31 of the respective years. 38 EV / 2023E EBITDA Historic Multiple 6.5 8.3 9.6 13.2 13.0 12.8 11.3 8.6 17.9 16.8 10.7 8.8 8.8 8.7 7.5 6.9 A vi en t (2 01 1) A vi en t (2 01 8) A vi en t (2 02 3) K W R P P G R P M A V Y F U L E C L H X L F M C S C L C E A S H E M N H U N Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) Senior management uses comparisons of adjusted net income from continuing operations attributable to Avient shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to Avient shareholders, excluding special items, to assess performance and facilitate comparability of results.

The English language version of the Terms shall prevail in all respects in case of any inconsistencies between any translated versions.

Language versions. In the event of any discrepancy, the English version shall prevail. 25.

STAN-TONE HCC-103250 PH G (BS)

TPEs made from styrenic block copolymers (SBC) such as Kraton® D or G Polymers have special properties that can enhance the success of a finished part.

Swanson, Director, Investor Relations, PolyOne Corporation, +1 440-930-1018, eric.swanson@avient.com; Media Contact: Kyle G.