Avient’s chief operating decision maker uses these financial measures to monitor and evaluate the ongoing performance of Avient and each business segment and to allocate resources. Each of such adjustments has not yet occurred, are out of Avient’s control and/or cannot be reasonably predicted. For the same reasons, Avient is unable to address the probable significance of the unavailable information.

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.

Ltd Business Registration Number: 91320505799067336K Registered I Operation Address: 13 Plant, No.855, Zhujiang Road, Suzhou New District, Jiangsu Province, China by reason of its Quality Management System has been awarded this certificate for compliance with the standard ISO 9001:2015 The Quality Management System Applies in the following area: Production Activities of Plastic Colorant & Additive (UV Blockers, Anti-Oxidation, Anti-Aging) Certified since: January 8, 2009 Valid from: January 16, 2024 Valid until: January 4, 2027 the expiry date of last certification cycle: January 4, 2024 the date of recertification 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.

With new innovative technologies, Avient continues to develop TPEs that bond to a variety of substrates. For additional information about the standard Versaflex OM series and the development of new TPEs that bond to unusual substrates, please contact your Avient representative. Startup problems occur during the launch of a new tool or machine.

Materials or feedstock substitution Product design or reformulation Equipment or process modifications Spill or leak prevention On­site reuse, recycling or recovery Improved inventory management or purchasing techniques Good operator practice or training 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 Identify at least one reason why no option to reduce the use or creation of this substance was implemented at your facility: Select the applicable reason or reasons ** There are no alternative processes and/or equipment identified, New equipment and/or processes were investigated, however, deemed unfeasible Explanation of the reasons why no option will be implemented   Rationale for why the listed options were chosen for implementation   General description of any actions undertaken by the owner and operator of the facility to reduce the use and creation of the toxic substance at the facility that are outside of the plan   License Number of the toxic substance reduction planner who made recommendations in the toxic substance reduction plan for this substance (format TSRPXXXX): * TSRP0123 Name of the toxic substance reduction planner who made recommendations in the toxic substance reduction plan for this substance (First Name Last Name) Daryl Chartrand License Number of the toxic substance reduction planner who has certified the toxic substance reduction plan for this substance (format TSRPXXXX): * TSRP0123 Name of the toxic substance reduction planner who has certified the toxic substance reduction plan for this substance (First Name Last Name) Daryl Chartrand What version of the plan is this summary based on?  * New Plan http://www.ec.gc.ca/default.asp?

Around the world, in more than 100 sales, manufacturing and regional offices, Avient and its employees are committed to being a positive presence in the communities in which we work and live. Pride at Avient RAISE at Avient

Avient’s chief operating decision maker uses these financial measures to monitor and evaluate the ongoing performance of Avient and each business segment and to allocate resources. GUIDANCE 7 $845 $824 $130 $131 Sales Adjusted EBITDA (in millions) $0.60 $0.63 Adjusted EPS (in millions) Q2 2023 PERFORMANCE VS. Avient 2011 and 2018 valuations reflect trailing 12 months EBITDA at December 31 of the respective years. 24 EV / 2023E EBITDA Historic Multiple 6.5 8.3 10.3 14.4 13.6 13.6 12.4 9.0 20.2 18.2 11.5 10.6 9.7 9.6 8.7 8.3 01 1) 01 8) 02 3) Avient Specialty Other Specialty / SEGMENT DATA U.S. & Canada 40% 37% 18% 2022 PRO FORMA SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS 20% 24% Building and END MARKET REVENUE $2,355M $402M $1,300M $272M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $592M$3,653M (1) 9% 26 (1) Total company sales and adjusted EBITDA of $3,653M and $592M, respectively, include intercompany sales eliminations and corporate costs 2022 REVENUE | $2 .4 B ILL ION 34% 38% 20% END MARKET REGION 27 34% 21% Building & 1% Energy 2% COLOR, ADDITIVES & INKS 2022 PRO FORMA REVENUE | $1 .3 B ILL ION 52% 35% 28 19% 8%Industrial 16% 9% Defense Building & END MARKET REGION SPECIALTY ENGINEERED MATERIALS 32% 27% 14% Building & 3% 1% Defense 1% (18% of sales) 9% 2022 PROFORMA AVIENT REGIONAL SALES 27% 14% 17% Building & (37% of sales)Transportation 24% 12% Building & US & Canada (40% of sales) 7% 56% 23% 7% Building & 1% LATAM (5% of sales) 3% 29 BY END MARKET 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.

F -27, MIDC, Ranjangaon, Taluka – Shirur, Pune Maharashtra 412220 India Hold this Opinion Statement No. 798019/2023 The Organization has demonstrated that they have followed the guidelines provided for Good Manufacturing Practices as per the ICHQ7 guidelines in their organization for the following Business activity: Research and Development, Manufacture of Color additives, Concentrates and Specialty Formulations for intended use in pharma and other industries Theuns Kotze, Managing Director – IMETA Assurance Last Audit Date: 31.10.2023 BSI Group India Private Limited T: +91-4762-9000 (CIN U74899DL1999PTC101381 info.in@bsigroup.com The Mira Corporate Suites bsigroup.com/en-IN Plot 1&2, Ishwar Nagar, Mathura Road New Delhi-110065, India

Values reported as “typical” or stated without a range do not state minimum or maximum properties; consult your sales representative for property ranges and min/max specifications. Focused on sustainable growth platforms, we support you with: • Twin-screw compounding, drum tumbler mixing, injection molding and compression molding • Full physical, analytical, weathering and burn testing capabilities designed to shorten the time to market for new products and applications • State-of-the-art innovation centers complete with customer meeting space for real time analysis and collaboration Our global experience in developing filled or fiber reinforced formulations provides unmatched value for you!

Product Selection Help Product Selection Help Sales Offices Wilflex Distributors As an ink manufacturer, Avient develops inks based on “performance factors.” Product Selection Help Product Selection Help Sales Offices Wilflex Distributors