Soweit Sie nicht ausdrücklich befugt sind, im Namen von Avient zu sprechen, geben Sie externe Anfragen aus der Investmentgemeinschaft oder den Medien an die Investor Relations Abteilung oder an die Corporate Communications Abteilung weiter. Jedoch dürfen Unternehmensmittel oder -ressourcen weder direkt noch indirekt zur Akquise oder zur Bereitstellung von Spenden an politische Kandidaten oder Parteien verwendet werden, wenn dies nicht gesetzlich erlaubt und durch die Corporate Communications Abteilung genehmigt worden ist. Das Unternehmen kann sich dafür entscheiden, gemeinnützige Spenden an gemeinnützige Organisationen zu machen, die durch die Corporate Communications Abteilung genehmigt werden müssen.

The Audit Committee reviewed and discussed with the independent registered public accounting firff m all communications required by applicable auditing standards. Communication with Board Shareholders and other interested parties who wish to communicate directly with the Board as a group, the non-management or independent Directors as a group, or with any individual Director may do so by writing to the Secretary, PolyOne Corporation, 33587 Walker Road, Avon Lake, Ohio 44012. The mailing envelope and letter must contain a clear notation indicating that the enclosed letter is either a “Shareholder-Board of Directors Communication” or an “Interested Party-Board of Directors Communication,” as appropriate.

Rose, Vice President, Marketing and Communications, Avient Corporation, +1 440-930-3162, kyle.rose@avient.com

Satellite Communications

Purchase price multiple rapidly declining on strength of business and synergy capture (1) (1) (1) Financial information is pro forma to include a full year of Clariant Color acquisition ($ in millions) 11.9% 16.3% 2019PF 2021E EBITDA Margins (1) Avient Corporation 12 People C U L T U R E I S E V E R Y T H I N G Avient Corporation 13 Community Service 7x Safer than Industry Average World-Class Safety Leadership Development Over $16 million raised since 2010 Diversity & Inclusion Future Growth in Excess of GDP is Driven By: Our company is positioned to sustainably grow at a rate that exceeds GDP. We are committed to creating value for our customers, employees, communities and shareholders through our dedication to ethical, sustainable and fiscally responsible principles.

These personal values begin with each of us—the judgments and decisions we make as individuals affect the way Avient is viewed in the marketplace and in the communities where we work.

The USee™ is a simple yet effective plastic self-refraction device that enables low-cost vision correction in under-resourced communities.

Purchase price multiple rapidly declining on strength of business and synergy capture 10 $133 $205 2019PF 2021 10 Clariant Color EBITDA Growth Purchase Price Multiple 10.8x 7.0x 6.1x 2019PF 2021 2021 w/ Full Synergies (1) (1) 11.9% 16.2% 2019PF 2021 EBITDA Margins (1) CLARIANT COLOR: TRANSFORMATIONAL ACQUISITION ($ in millions) (1) Financial information is pro forma to include a full year of Clariant Color business ($ millions) Initial Synergy Estimate 2021 Synergy Realization Total Synergies Expected Administrative $ 18 $ 29 $ 40 Sourcing 24 20 24 Operational 18 5 21 Total Synergies $ 60 $ 54 $ 85 CLARIANT COLOR INTEGRATION & COST SYNERGIES UPDATE 11 • Integration going extremely well: synergy target increased to $85 million at December 9th Investor Day • 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 SUSTAINABILITY FOR A BETTER TOMORROW 12 • Revenue from sustainable solutions grew 16% in 2021 and expected to grow 8-12% in 2022 as our innovation efforts and collaboration with customers accelerates • Investments centered around innovation and global sustainability megatrends o Enabling a circular economy – Technologies that allow for increased use of post-consumer recycled (PCR) material and improve recyclability of plastics o Light-weighting – Composites and CAI applications to reduce weight and material requirements, which minimize energy and carbon emissions o Eco-Conscious – Health and human safety applications as well as Avient’s alternative materials to replace lead, PVC, halogens, BPA and other less eco-friendly options 12 *Avient Sustainable Solutions definitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) **2020 is Pro Forma to include full year of the Clariant Color business 12 2016 2017 2018 2019 2020PF** 2021 $405M $455M $550M $790M Revenue From Sustainable Solutions* 2016-2021 $915M $340M PEOPLE C U L T U R E I S E V E R Y T H I N G Community Service 7x Safer than Industry Average World-Class Safety Leadership Development Over $16 million raised since 2010 Diversity & Inclusion 13 Q4 2020 $997 $80 Sustainable Solutions 23 12% 8 Healthcare 53 43% 9 Composites 7 22% 2 Growth in Asia / LATAM 14 10% 3 Other 118 23% 2 Sub-total $1,212 22% $104 Wage Inflation and Overtime (11) Other Supply Chain Costs (4) Synergies 9 Incentives, FX, Other Employee Costs (10) (13) Q4 2021 $1,202 21% $85 Q4 2021 SALES AND OPERATING INCOME (TOTAL COMPANY) 14 Sales Growth Rate Adjusted Operating Income$ millions Adjusted EBITDA Q4 EBITDA BRIDGE 15 Price increases more than offsets raw material and supply chain impacts Q4 2020 $ 118 Demand - $ millions CAI: Price / Mix 62 Inflation (45) SEM: Price / Mix 25 Inflation (20) Distribution: Price / Mix 114 Inflation (109) Net Price Benefit 27 Wage Inflation and Overtime (11) Other Supply Chain Costs (4) Synergies 9 Incentives, FX, Other Employee Costs (13) Q4 2021 $ 126    Transportation (5)$ Outdoor High Performance (3) Other 8 Total Demand - Q4 2021 SEGMENT PERFORMANCE 16 CAI $526 $581 Sales ($ in millions) SEM Distribution $58 $61 Operating Income + 11% + 6% $305 $425 Sales $18 $22 Operating Income + 39% + 22% (1) $191 $228 Sales $30 $29 Operating Income + 19% - 3% 2022 O U TLO O K REVENUE GROWTH DRIVERS Growth Drivers Long-Term Growth Rate 2022E Growth Rate Sustainable Solutions 8–12% 12% Healthcare 8–10% 10% Composites 10% 3% Asia / LATAM 5% 6% Other (GDP growth) 2–3% 2–3% Avient 6.5% 6% 18 Excluding Outdoor High Performance 13% (7.5% excl.

Our commitment includes the people in all the communities where we operate as well. PolyOne employees have a passion for serving our communities using their time and talents, which recently included framing a house with Habitat for Humanity. 2. Reward our stakeholders, as our growth enables stock price appreciation, increases in share repurchases and dividends for shareholders, fulfilling and productive careers for our associates, and giving back in our communities.

Enter the appropriate code in the space in line 4. 1—An organization exempt from tax under section 501(a), any IRA, or a custodial account under section 403(b)(7) if the account satisfies the requirements of section 401(f)(2) 2—The United States or any of its agencies or instrumentalities 3—A state, the District of Columbia, a U.S. commonwealth or possession, or any of their political subdivisions or instrumentalities 4—A foreign government or any of its political subdivisions, agencies, or instrumentalities 5—A corporation 6—A dealer in securities or commodities required to register in the United States, the District of Columbia, or a U.S. commonwealth or possession 7—A futures commission merchant registered with the Commodity Futures Trading Commission 8—A real estate investment trust 9—An entity registered at all times during the tax year under the Investment Company Act of 1940 10—A common trust fund operated by a bank under section 584(a) 11—A financial institution 12—A middleman known in the investment community as a nominee or custodian 13—A trust exempt from tax under section 664 or described in section 4947 Form W-9 (Rev. 10-2018) Page 4 The following chart shows types of payments that may be exempt from backup withholding.