The data importer shall, under the same conditions, pursue possibilities of appeal. Each Party agrees to be bound by the terms and conditions set out in this Addendum, in exchange for the other Party also agreeing to be bound by this Addendum. 2. The data importer shall, under the same conditions, pursue possibilities of appeal.

March 2025 - Final and Approved version.pdf Avient Corporation Corporate Governance Guidelines The Board of Directors (the “Board”) of Avient Corporation (the “Company”) has adopted the following Corporate Governance Guidelines (the “Guidelines”). Change in Director’s Employment Non-employee directors who significantly change their principal business or professional responsibility outside of the Company must submit a conditional letter of resignation to the Board. Oversight of Risk Management The Board oversees a Company-wide approach to risk management that is designed to support the achievement of the Company’s strategic objectives and improve long-term organizational performance.

Including the following remote support functions: Polyone Corporation 33587 Walker Road Avon Lake, OH 44012 USA Audited by ABS Quality evaluations Product Design, Purchasing, Customer Service and Strategic Planning Location Registered Activities BSI Certificate Number: 85585 IATF Number: 0315491 Certification Date: 2018-07-11 Latest Issue: 2018-07-11 Expiry Date: 2021-07-10 Page: 2 of 2 This certificate remains the property of BSI and shall be returned immediately upon request.

Avient Corporation 1 JEFFERIES VIRTUAL INDUSTRIALS CONFERENCE A U G U S T 2 0 2 0 Avient Corporation 2 FORWARD LOOKING STATEMENTS • • • • • • • • • • • • • • • • • • • • Avient Corporation 3 USE OF NON-GAAP MEASURES • • • Avient Corporation 4 UPDATE ON THE COVID-19 PANDEMIC • • • • Avient Corporation 5 2019 Transportation Consumer Discretionary Healthcare Packaging All Other Industries Cost Containment FX 2020 $64.3 18% 18% 9% 6% 16% 2% $46.9 20% • • • • • • SECOND QUARTER 2020 IN REVIEW Consumer Discretionary Avient Corporation 6 CLARIANT MASTERBATCH STRATEGIC RATIONALE Avient Corporation 7 FIT W I T H FOUR PILLAR S T R A T E G Y Specialization • • • Globalization • • Operational Excellence • • • Commercial Excellence • • People Avient Corporation 8 5% 2006 2019E PF* 4% 12% 10% 18% 8% 20% 2006 2019E PF* Healthcare Consumer Packaging 38% * 2019E Pro Forma for PP&S Divestiture and Clariant Masterbatch business Percentage of Total Revenue E N D M A R K E T T R A N S F O R M A T I O N Building & Construction High Growth End Markets 50% 22% Avient Corporation 9 Wire & Cable 11% Industrial 10% Electrical & Electronic 7% Healthcare 4% Packaging 8% Consumer 10% Transportation 12% Building & Construction 38% Healthcare 12% Packaging 20% Consumer 18%Transportation 12% Building & Constrution 5% Wire & Cable 9% Industrial 11% Electrial & Electronic 4% Appliance 2% Textiles 7% 2006 Pro Forma(1) Net Sales by End Market E N D M A R K E T T R A N S F O R M A T I O N Avient Corporation 10 U N I F I E D F O C U S O N S U S T A I N A B I L I T Y 2006 - 2013 2013 – 2019 PEOPLE PROD UC TS PLANET PER FOR M A NC E •• •• •• Avient Corporation 11 O V E R 8 5 % O F A D J U S T E D E B I T D A F R O M S P E C I A L T Y 46% 66% 0% 20% 40% 60% 80% 100% 2005 2010 2015 Pro Forma % o f A d ju s te d E B IT D A ( 1) JVs Performance Products & Solutions Distribution Specialty 7% 87% (2) Avient Corporation 12 T H E N E W A V I E N T : A S P E C I A L T Y G R O W T H C O M P A N Y     Transaction expected to add $0.85 to pro forma adjusted EPS Avient Corporation 13 SUSTAINABILITY AT AVIENT P E O P L E , P R O D U C T S , P L A N E T , P E R F O R M A N C E Avient Corporation 13 Avient Corporation 14 V I S I O N To be the world’s premier provider of specialized polymer materials, services and solutions C O R E V A L U E S P E R S O N A L V A L U E S Honesty IntegrityRespect Operational Excellence Commercial Excellence Specialization Globalization Collaboration ExcellenceInnovation To be the world’s premier provider of specialized polymer materials, services and sustainable solutions Avient Corporation 15 1.3 1.1 1.1 0.85 0.65 0.57 0.54 0.97 0.84 0.74 0.74 0.69 0.51 0.56 0.14 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 YTD S A F E T Y F I R S T Injuries per 100 Workers Spartech Acquisition Avient Corporation 16 G R E A T P L A C E T O W O R K Avient Corporation 17 C O M M O D I T Y T O S P E C I A L T Y T R A N S F O R M A T I O N • • • • • • • • • • • • 2006 - 2013 2013 – 20192000-2005 2006 - 2013 • • 2020 and Beyond Avient Corporation 18 A V I E N T 2 0 1 9 R E V E N U E | $ 2 . 9 B I L L I O N Segment End Market Geography Healthcare 15% Industrial 14% Consumer 14% Packaging 13% Transportation 13% Wire & Cable 11% Building & Construction 6% Electrical & Electronics 6% Textiles 5% Appliance 3% Color Additives & Inks 34% Distribution 41% Specialty Engineered Materials 25% United States 54% Europe 19% Asia 11% Latin America 11% Canada 5% Avient Corporation 19 Operating Income % of Sales 2006 2019 Color, Additives & Inks 1.7% 14.7% Specialty Engineered Materials 1.1% 11.6% Distribution 2.6% 6.3% 2009 2010 2011 2012 2013 2014 2015 2016*2017* 2018 $2.43 P R O O F O F P E R F O R M A N C E C O N S E C U T I V E Y E A R S 10 $0.13 $0.68 $0.82 $1.00 $1.31 $1.80 $1.96 $2.06 $2.21 A D J U S T E D E P S E X P A N S I O N 2018 2019 $1.69 $1.51 Avient Corporation 20 531 710 1,032 130 164 207 504 663 871 2014 2018 Pro Forma R&D / Technical Marketing Sales + 34% + 26% + 32% E X P A N S I O N O F COMMERCIAL RESOURCES D R I V I N G G R O W T H Revenue in Billions Total + 10% Organic + 7%+ 45% + 26% + 31% $4.0 $3.2 (2) (1) (1) $2.9 $2.9 $3.5 2015 2016 2017 2018 Pro Forma Total + 9% Organic + 5% Pro Forma(2) Avient Corporation 21 P R I O R A C Q U I S I T I O N S H I S T O R Y Commercial Resources(1) Operating Income ($ in millions) Operating Margins 256 350 At Acquisition 2019 $36 $100 At Acquisition 2019 9% 19% At Acquisition 2019 Established Acquisitions (> 7 years) + 37% + 176% + 1000 bps Avient Corporation 22 A L I G N I N G W I T H T R E N D S F O R G R O W T H T R A N S P O R T A T I O N P A C K A G I N G H E A L T H C A R E C O N S U M E R Facilitate alternative energy solutions Light- weighting Reduce packaging materials Improve recyclability Reduce spread of infection Avient Corporation 23 I N N O V A T I O N Customization 55% M&A 30% Innovation Pipeline 15% Innovation comes from Research & Development Spend Vitality Index 12% 37% 2006 2019 $20 $51 2006 2019 Avient Corporation 24 R E V E N U E F R O M S U S T A I N A B L E S O L U T I O N S $275M $325M $355M $410M 14% Total Annual Growth 9% Organic Annual Growth Avient Corporation 25 SEGMENT HIGHLIGHTS I N N O V A T I N G W I T H A V I E N T Avient Corporation 25 Avient Corporation 26 C O L O R , A D D I T I V E S & I N K S E N D M A R K E T S & S O L U T I O N S Solid Colorants Performance Additives Screen Printing Inks Liquid Colorants Packaging 31% Industrial 14% Textiles 13% Wire & Cable 10% Building & Construction 9% Consumer 8% Transportation 7% Healthcare 5% Appliances 2% Electrical & Electronics 1% Avient Corporation 26 Avient Corporation 27 Operating Income & MarginRevenue by Region C O L O R , A D D I T I V E S & I N K S 2 0 1 9 R E V E N U E | O V E R $ 1 B I L L I O N Europe 34% United States 44% Asia 15% Canada 1% Mexico 3% South America 3% $4 $25 $104 $147 2005 2009 2013 2019 0.9% 5.5% 12.2% 14.7% Avient Corporation 27 Avient Corporation 28 S P E C I A L T Y E N G I N E E R E D M A T E R I A L S E N D M A R K E T S & S O L U T I O N S Engineered Formulations Advanced Composites Thermoplastic Elastomers Wire & Cable* 28% Consumer 19% Electrical & Electronics 12% Healthcare 9% Industrial 8% Packaging 6% Appliance 2% Building & Construction 2% Transportation 14% Avient Corporation 28 Avient Corporation 29 S P E C I A L T Y E N G I N E E R E D M A T E R I A L S Revenue by Region Operating Income & Margin 2 0 1 9 R E V E N U E | $ 7 5 0 M I L L I O N Europe 27% United States 54% Asia 17% Canada 2% $21 $57 $87 2005 2009 2013 2019 0.1% 5.1% 9.3% 11.6% Avient Corporation 29 Avient Corporation 30 D I S T R I B U T I O N E N D M A R K E T S & S U P P L I E R S Healthcare 28% Industrial 19% Transportation 18% Consumer 17% Appliance 6% Electrical & Electronics 5% Building & Construction 4% Packaging 2% Wire & Cable 1% Operating Income & Margin2019 Revenue | $1.2 Billion $25 $63 $75 2005 2009 2013 2019 $20 2.9% 4.0% 5.9% 6.3% Avient Corporation 30 http://www.polyone.com/Pages/VariationRoot.aspx Avient Corporation 31 O V E R V I E W O F R A W M A T E R I A L P U R C H A S E S Avient Corporation 31 Avient Corporation 32 Avient Corporation 33 Adjusted EPS attributable to PolyOne common shareholders is calculated as follows: 2009* 2010* 2011* 2012* 2013* 2014* 2015* 2016** 2017** 2018 2018*** Q1 2019*** 2019 Q1 2020 Net income from continuing operations attributable to PolyOne common shareholders Joint venture equity earnings, after tax Special items, before tax (1) Special items, tax adjustments (1) Adjusted net income from continuing operations attributable to PolyOne common shareholders $ 106.7 $ 152.5 $ 153.4 $ 53.3 $ 94.0 $ 78.0 $ 144.6 $ 166.4 $ 173.5 $ 161.1 $ 87.7 $ 22.4 $ 75.5 $ 33.1 (19.0) (14.7) (3.7) — — — — — — — — — — — (48.7) 24.2 (48.1) 55.1 46.3 164.2 87.6 23.8 32.9 59.5 58.7 12.2 61.7 9.6 (27.2) (96.7) (24.7) (18.9) (13.7) (73.7) (58.7) (15.9) (24.8) (25.3) (25.1) (1.2) (5.9) (1.0) $ 11.8 $ 65.3 $ 76.9 $ 89.5 $ 126.6 $ 168.5 $ 173.5 $ 174.3 $ 181.6 $ 195.3 $ 121.3 $ 33.4 $ 131.3 $ 41.7 Diluted shares 93.4 96.0 94.3 89.8 96.5 93.5 88.7 84.6 82.1 80.4 80.4 78.2 77.7 86.7 Adjusted EPS attributable to PolyOne common shareholders $ 0.13 $ 0.68 $ 0.82 $ 1.00 $ 1.31 $ 1.80 $ 1.96 $ 2.06 $ 2.21 $ 2.43 $ 1.51 $ 0.43 $ 1.69 $ 0.48 * Historical results are shown as presented in prior filings and have not been updated to reflect subsequent changes in accounting principle, discontinued operations or the related resegmentation. ** Pro forma for sale of Designed Structures and Solutions segment (DSS). *** Pro forma for sale of Performance Products and Solutions segment (PP&S). Avient Corporation 33 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. Senior management believes these measures are useful to investors because they allow for comparison to Avient's performance in prior periods without the effect of items that, by their nature, tend to obscure Avient's operating results due to the potential variability across periods based on timing, frequency and magnitude.

Bu Politika, Avient adına hareket eden tüm çalışan, yetkili, temsilci ve diğer üçüncü tarafların da aralarında bulunduğu Avient ve bağlı kuruluşları için geçerlidir. Bu ilişkiler Avient için önemlidir ve birçok iş alanında değerli katkılar sağlar. Avient herhangi bir “kayıt dışı” veya “gizli ödenek” hesabının oluşturulmasına veya kullanılmasına izin vermez.

Avient and its global direct and indirect subsidiaries and affiliates, including ColorMatrix (“Avient”), are intermediate suppliers of specialty polymers and related raw materials designed to meet the specifications of its manufacturing customers. Avient strives to uphold a consistent global standard of ethical conduct, while respecting the cultures and business practices of the countries and local communities with which we interact. The Avient ethics hotline is available globally to make a web-based or telephonic report, with multi-language capabilities, 24 hours a day, seven days a week.

AVIENT CORPORATION COMPENSATION COMMITTEE CHARTER Membership • The Compensation Committee (“Committee) of the Board of Directors (“Board”) of Avient Corporation (“Company”) shall consist of a minimum of three directors. • The Committee will consist entirely of directors who the Board has determined have no material relationships with the Company, either directly or as a partner, shareholder, or officer of an organization that has a relationship with the Company, and: o who meet the definition of “independent” as set forth in the Corporate Governance Standards of the New York Stock Exchange; and o qualify as “non-employee directors” for the purposes of Rule 16b-3 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). • Each Committee member will serve at the pleasure of the Board for such term as the Board may decide or until such Committee member is no longer a Board member. General Purposes The general purposes of the Committee are to: • Oversee the Company’s overall executive compensation philosophy and objectives to help ensure they provide appropriate motivation for corporate performance and increased shareholder value; and • Discharge the Board's responsibilities relating to the compensation of the Company’s executive officers and directors, as further discussed and described in this Charter (for purposes of this Charter, the term “executive officers” means the Company’s Section 16 officers pursuant to Rule 16a-1(f) under the Exchange Act) and other executive management of the Company as designated by the Committee. Duties and Responsibilities The Committee will: Executive Compensation and Incentives. • Oversee and maintain a competitive executive compensation program to attract and retain qualified executive officers and to provide incentives that reward pay for performance in attaining the Company’s goals and objectives. • Review and approve a peer group of companies to be used for marketplace trend analysis and to assess the competitiveness of the Company’s total compensation opportunities for executive officers. 2 • Review and approve corporate goals and objectives relevant to the Chief Executive Officer’s compensation; in conjunction with the evaluation conducted by the Board (including as described in the Company’s Corporate Governance Guidelines), evaluate the Chief Executive Officer’s performance annually in light of these goals and objectives; and determine and recommend to the independent members of the Board for their determination and approval the Chief Executive Officer’s compensation level based on this evaluation and considering comparable market data provided by an independent compensation consultant. • In determining the long-term incentive component of the Chief Executive Officer’s compensation, consider the Company’s performance and relative shareholder return, the value of similar incentive awards to chief executive officers at comparable companies, and the awards given to the Chief Executive Officer in the past. • Review and approve the compensation of other executive officers of the Company, including benefits and perquisites, taking into consideration the Company’s performance, comparable market data, the performance of each executive officer, and such other factors as may, in the Committee’s discretion, be appropriate. • In evaluating and making recommendations regarding, or determining and approving, executive officer compensation, the Committee shall consider the results of the most recent shareholder advisory vote on executive compensation (“Say on Pay Vote”) required by Section 14A of the Exchange Act. • Make recommendations to the Board with respect to the approval of incentive compensation plans for executive officers and all equity-based plans. • For annual (or other short term) incentive plans: o Review and approve annual incentive plans (including performance criteria, target awards, payout criteria and similar award design items applicable under such plans) that are applicable to executive officers and any Company officers reporting directly to the Chief Executive Officer. o Review and approve attainment levels and payments to executive officers and any other Company officers reporting directly to the Chief Executive Officer. • For long-term and equity-based incentive plans: o Review and approve the performance criteria, target awards, payout criteria and similar award design items for recipients of grants and awards under the plans. o Review and approve grants, awards, and attainment levels, including equity-based grants, to recipients of grants and awards under such plans. o Review and approve payments for performance-based grants and awards to executive officers and any other Company officers reporting directly to the Chief Executive Officer, as applicable, under such plans. • Administer the Company’s equity-based incentive compensation plans and other plans adopted by the Board that contemplate administration by the Committee. • Review and approve the terms of all employment agreements, executive severance plan and agreements, management continuity agreements and change in control agreements for elected officers. • Approve the adoption and amendment of Company stock ownership guidelines and annually review compliance with these guidelines. 3 Non-employee Director Compensation. • Review the compensation of non-employee directors and make recommendations to the Board regarding changes to existing compensation levels. • Review and recommend to the Board for its approval equity-based grants and awards to non- employee directors under the Company’s equity-based plans and annually review compliance with Company stock ownership guidelines.

No. 0962.01) 09/05/2023 Page 1 of 1 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 AVIENT CORPORATION 80 North West Street Norwalk, OH 44857 Craig Polta Phone: 419 660 4278 MECHANICAL Valid To: September 30, 2025 Certificate Number: 0962.01 In recognition of the successful completion of the A2LA evaluation process, accreditation is granted to this laboratory to perform the following tests on plastics: Test Method(s) Test Name ASTM D256; ISO 180 Notched Izod ISO 179 (1eA) Determination of Charpy Impact ASTM D523 Gloss ASTM D618 (Method A) Conditioning of Test Specimens ASTM D792 (Method A) Specific Gravity ASTM D1238 (Method B) Melt Flow Rate ASTM D3012 Thermal Oxidative Stability ASTM D3641 Injection Molding Test Specimens FMVSS 302 Flammability ASTM E1331; SAE J1545 Spectrophotometric Color Difference SAE J1885 (Rev. Accredited Laboratory A2LA has accredited AVIENT CORPORATION Norwalk, OH for technical competence in the field of Mechanical Testing This laboratory is accredited in accordance with the recognized International Standard ISO/IEC 17025:2017 General requirements for the competence of testing and calibration laboratories.

Avient Supplier Code of Conduct Avient Corporation and its subsidiaries and affiliates ("Avient'') are committed to being a world-class, sustainable organization. It contains globally aligned standards and is rooted in international law. External communications about Avient require Avient’s prior written consent. • Inform Avient of financial, economic, supply changes (including origin or conflict status of 3TG metals), government regulations or other materials conditions that could affect ongoing operations or operating decisions, or if the company has been debarred as a government contractor. • Establish an information security and data privacy system to protect Avient’s information, including information of its customers and employees, from being disclosed, changed, destroyed, or used for any purpose other than the purpose for which it was provided.

Ces relations sont importantes pour Avient et fournissent des contributions précieuses dans de nombreux domaines d’activité. C’est pourquoi Avient doit prendre les mesures appropriées pour prévenir la corruption. Avient ne permet pas d’établir ou d’utiliser des comptes « hors livre » ou des « caisses noires ».