Unified social credit code: 91320412MA1NMF5W4P is in conformity with Environmental Management System Standard: GB/T 24001-2016 / ISO 14001:2015 The certificate is valid to the following product(s)/service: Coating Processing of Textile (Yarn) and Glass Products (Yarn) and Related Management Activities Registration Address/ Physical Address: R&D Workshop 5, No. 8, Lanxiang Road, West Taihu Science and Technology Industrial Park, Changzhou City, Jiangsu Province, P.

If the parties cannot agree upon and implement such changes within sixty (60) days after such notice, Seller shall thereupon have a right to terminate this contract forthwith by written notice to Buyer. 5. Buyer may assign/transfer rights and/or delegate duties/obligations hereunder only with the 12. Seller may assign this contract and/or rights and delegate obligations under this contract without the consent of Buyer.

Stock-Settled Stock Appreciation Rights. 4) Modification of Stock Appreciation Rights in Connection with Retirement. Holders of common shares have no cumulative voting rights.

Patterson Page 46 United States 67% Europe 17% Canada 11% Asia 5% United States 60% Europe 19% Canada 9% Asia 7% Latin America 5% Customer-Driven Globalization 2006 2011* *Pro forma for the acquisition of ColorMatrix • Differentiated by our consistent service and quality offerings globally • Invested in global account management organization to serve over 100 multinational key accounts Page 47 • Leverage technology development and best practices to better serve global customers • Drive global marketing strategies for growth with target customers & markets Formation of Global Segments in 2010 • Accelerate decision making and assure consistent execution of four pillar strategy for growth with target customers & markets Page 48 Recent Investment Activity • 67% of recent commercial additions are outside the U.S

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.

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.

10 2021 O U TLO O K Synergies ($ millions) Initial Three-Year Estimate Revised Three-Year Estimate 2021 Expected Realization Administrative $ 18 $ 20 $ 15 Sourcing 24 30 15 Operational 18 25 5 Total Synergies $ 60 $ 75 $ 35 CLARIANT INTEGRATION & COST SYNERGIES UPDATE 12 • Integration going extremely well: synergy target increased from $60 million to $75 million • $5 million of synergies in 2020 and expect to realize $35 million in 2021 • Relentless focus on guiding principles of safety first, employee collaboration and exceeding customer expectations • Future revenue synergies are not part of these estimates and represent additional growth over the long term $86 $103 $0.53 $0.70 ORGANIC GROWTH PROJECTIONS – Q1 13 Sales Adjusted Operating Income $991 $1,090 + 10% Adjusted EPS + 20% + 32% (in millions) (in millions) (1) (1) (1) (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition $308 $360 $1.93 $2.40 ORGANIC GROWTH PROJECTIONS – FULL YEAR 14 Sales Adjusted Operating Income $3,783 $4,100 + 8% Adjusted EPS + 17% + 24% (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition (in millions) (in millions) 2020 Pro forma $3,783 $308 Sustainable Solutions 60 11% 24 Healthcare 60 11% 18 Composites 20 10% 10 Growth in Emerging Regions 50 7% 11 Other (GDP growth) 82 5% 11 Sub-total $4,055 7% $382 COVID Response Applications (25) - (11) Outdoor High Performance Applications (15) - (7) Asia Payroll Tax Subsidy (COVID) - - (4) FX Impact 85 - 7 Synergies - - 30 Incentives, Travel, Other Employee Costs - - (37) 2021 Estimated $4,100 8% $360 2021 ORGANIC SALES AND OPERATING INCOME 15 (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition (2) COVID Response Applications: facemasks, personal protective equipment Sales Growth Rate Operating Income$ millions (2) CASH FLOW AND LEVERAGE 16 • Asset light business generates significant free cash flow • Cash generation in 2021 partially offset by restructuring activities to capture synergies associated with the Clariant Masterbatch acquisition • Cash flow deployed to M&A, opportunistic share repurchases and balance sheet / leverage reduction 3.5x 2.7x 2.1x 2019PF 2020PF 2021E Net Debt / Adjusted EBITDA (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition ($ millions) 2020 2021E Adjusted EBITDA 382 510 Working Capital: Source / (Use) 116 (30) Cash Taxes (40) (53) Interest Paid (67) (76) CapEx (62) (75) CapEx for Synergy Capture (2) (20) Restructuring for Synergy Capture (11) (25) Other 22 19 Free Cash Flow 338 250 We sell solutions not commodities. Free cash flow should be considered in addition to, rather than as a substitute for, consolidated net income as a measure of our performance and net cash provided by operating activities as a measure of our liquidity. Free Cash Flow Calculation Year Ended Cash provided (used) by operating activities $ 221.6 Capital expenditures (63.7) Free Cash Flow 157.9 Payment of post-acquisition date earnout liability 38.1 Taxes paid on gain on divestiture 142.0 Adjusted Free Cash Flow $ 338.0 Free Cash Flow Calculation Total Discontinued Operations Continuing Operations Cash provided by operating activities $ 300.8 $ 74.4 $ 226.4 Capital expenditures 81.7 14.1 67.6 Free Cash Flow $ 219.1 $ 60.3 $ 158.8 Avient Q4 Earnings and 2021 Outlook.pdf Avient February IR Presentation.pdf Avient IR Presentation - Goldman Sachs and Morgan Stanley - Website.pdf Avient Q4 Earnings and 2021 Outlook.pdf Avient Q4 Earnings and 2021 Outlook.pdf Avient Q4 Earnings and 2021 Outlook.pdf Avient Q4 Earnings and 2021 Outlook.pdf Avient Q4 Earnings and 2021 Outlook.pdf 2.5.21 IR Deck Attachments clean

Antitrust Laws U.S. antitrust laws have a broad reach, and the U.S. agencies that enforce them won’t hesitate to apply the laws to anticompetitive activities abroad. In any event, anticompetitive business practices that could adversely affect U.S. domestic or foreign commerce may violate U.S. antitrust laws, regardless of where the activity occurs or the nationalities of the people involved. Whenever you anticipate engaging in antitrust-sensitive activities that may have an effect either within or outside of the U.S., you should consult in advance with the Avient Legal Department.

In case an invoice is under dispute, Supplier has no right to postpone its obligations. In the event that the Parties have an active Confidential Disclosure Agreement (“CDA”) in place at the time of entering into the Agreement, disclosures of confidential information under the Agreement shall be governed by the CDA. 16. Supplier, Supplier’s insurer(s) and anyone claiming by, through, under or on Supplier’s behalf shall have no claim, right of action or right of subrogation against Avient or its customers based on any loss or liability insured against under the Required Insurance.

Stock-Settled Stock Appreciation Rights. The following section describes significant activities relating to the above that occurred in 2021. Holders of common shares have no cumulative voting rights.