Avient has transitioned our Material Safety Data Sheets (MSDSs) to Safety Data Sheets (SDSs) for our manufactured products to meet the requirements of the Globally Harmonized System of Classification and Labeling of Chemicals (GHS), and CLP classification in Europe. Technical Data Sheets Safety Data Sheets

Avient has transitioned our Material Safety Data Sheets (MSDSs) to Safety Data Sheets (SDSs) for our manufactured products to meet the requirements of the Globally Harmonized System of Classification and Labeling of Chemicals (GHS), and CLP classification in Europe. Technical Data Sheets Safety Data Sheets

SAFETY & HEALTH INDEMNITY Buyer acknowledges that Seller has furnished to Buyer Material Safety Data Sheets as required under applicable laws and regulations, which include warnings together with safety and health information concerning the Product and/or the containers for such Product. DATA PROTECTION Buyer hereby agrees that any data in relation with the business relationship between Buyer and Seller may be processed by Seller, in compliance with applicable laws and regulations. 15.

Avient has transitioned our Material Safety Data Sheets (MSDSs) to Safety Data Sheets (SDSs) for our manufactured products to meet the requirements of the Globally Harmonized System of Classification and Labeling of Chemicals (GHS), and CLP classification in Europe. Technical Data Sheets Safety Data Sheets

Avient has transitioned our Material Safety Data Sheets (MSDSs) to Safety Data Sheets (SDSs) for our manufactured products to meet the requirements of the Globally Harmonized System of Classification and Labeling of Chemicals (GHS), and CLP classification in Europe. Technical Data Sheets Safety Data Sheets

WHAT WE DO: WE ARE A FORMULATOR 6 CUSTOM FORMULATION M AY 3 , 2023 W EB CAS T Keeping Safety First o Relentless focus on best-in-class safety performance as an ACC Responsible Care® organization Exceeding Customer Expectations o Complementary technologies and customer relationships offer opportunity for future revenue synergies o Proven innovation-led commercial strategy with strong brands and participation across the full value chain Collaboration in Innovation o Leveraging Dyneema®, the world’s strongest fiber™, to accelerate growth of sustainable, ultralight and high performance applications People – Culture is Everything o Talented, passionate and collaborative associates drive an effective integration strategy o Strong Great Places to Work® scores reflect positive integration efforts in first year AVIENT PROTECTIVE MATERIALS INTEGRATION 8 AVIENT PROTECTIVE MATERIALS K E Y I N D U S T R I E S PERSONAL PROTECTION Military • Law Enforcement • First Responders • Body Armor • Helmets • Vehicle Protection 50% MARINE & SUSTAINABLE INFRASTRUCTURE Towing / Mooring • Aquaculture • Floating Wind • Offshore Cranes 30% CONSUMER Consumer • Outdoor High Performance • Safety Equipment 20% 9 Figures reflect approximate proportions of 2022 sales Q 1 P ER FO RM A N CE Q1 2023 PERFORMANCE VS. 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.

Avient has transitioned our Material Safety Data Sheets (MSDSs) to Safety Data Sheets (SDSs) for our manufactured products to meet the requirements of the Globally Harmonized System of Classification and Labeling of Chemicals (GHS), and CLP classification in Europe. Technical Data Sheets Safety Data Sheets

Avient has transitioned our Material Safety Data Sheets (MSDSs) to Safety Data Sheets (SDSs) for our manufactured products to meet the requirements of the Globally Harmonized System of Classification and Labeling of Chemicals (GHS), and CLP classification in Europe. Technical Data Sheets Safety Data Sheets

Avient has transitioned our Material Safety Data Sheets (MSDSs) to Safety Data Sheets (SDSs) for our manufactured products to meet the requirements of the Globally Harmonized System of Classification and Labeling of Chemicals (GHS), and CLP classification in Europe. Technical Data Sheets Safety Data Sheets

Avient has transitioned our Material Safety Data Sheets (MSDSs) to Safety Data Sheets (SDSs) for our manufactured products to meet the requirements of the Globally Harmonized System of Classification and Labeling of Chemicals (GHS), and CLP classification in Europe. Technical Data Sheets Safety Data Sheets