Non-GAAP financial measures have limitations as analytical tools and should not be considered in isolation from, or solely as alternatives to, financial measures prepared in accordance with GAAP.

Non-GAAP financial measures have limitations as analytical tools and should not be considered in isolation from, or solely as alternatives to, financial measures prepared in accordance with GAAP.

Non-GAAP financial measures have limitations as analytical tools and should not be considered in isolation from, or solely as alternatives to, financial measures prepared in accordance with GAAP.

Non-GAAP financial measures have limitations as analytical tools and should not be considered in isolation from, or solely as alternatives to, financial measures prepared in accordance with GAAP.

Purchase price multiple rapidly declining on strength of business and synergy capture 14 $133 $205 2019PF 2021 14 Clariant Color EBITDA Growth Purchase Price Multiple 10.8x 7.0x 6.1x 2019PF 2021 2021 w/ Full Synergies (1) (1) 11.9% 16.2% 2019PF 2021 EBITDA Margins (1) CLARIANT COLOR: TRANSFORMATIONAL ACQUISITION ($ 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 C L A R I A N T C O LO R I N T E G R AT I O N & C O S T S Y N ERG I E S U PDATE 15 • 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 S U S TA I NA B I L I T Y F O R A B ET T E R TO M O R ROW 16 • 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 16 *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 16 2016 2017 2018 2019 2020PF** 2021 $405M $455M $550M $790M Revenue From Sustainable Solutions* 2016-2021 $915M $340M PEOPL E 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 17 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% $85 Q4 2021 SALES AND OPERATING INCOME ( T O TA L C O M PA N Y ) 18 Sales Growth Rate Adjusted Operating Income$ millions Adjusted EBITDA Q4 EBITDA BRIDGE 19 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 20 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% 2 0 2 2 O U T L O 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% 22 Excluding Outdoor High Performance 13% (7.5% excl.

This family of polypropylene- and polyethylene- based products is an ideal performance driven alternative to highly engineered polymers across a variety of industries.

Seller may change the price of the Product and/or terms of delivery and shipment at any time up until delivery, except where a written alternative pricing mechanism exists that is signed by Seller.

The amounts deferred are credited to accounts selected by the Named Executive Officer that mirror the investment alternatives available in our Qualified Savings Plan. Non-GAAP financial measures have limitations as analytical tools and should not be considered in isolation from, or solely as alternatives to, financial measures prepared in accordance with GAAP. Non-GAAP financial measures have limitations as analytical tools and should not be considered in isolation from, or solely as alternatives to, financial measures prepared in accordance with GAAP.

Depending upon the results of future testing, the ultimate remediation alternatives undertaken, changes in regulations, new information, newly discovered conditions and other factors, it is reasonably possible that we could incur additional costs in excess of the amount accrued. In determining the effective income tax rate, the Company analyzes various factors, including annual earnings, the laws of taxing jurisdictions in which the earnings were generated, the impact of state and local income taxes, the ability to use tax credits, net operating loss carryforwards, and available planning alternatives. This plan reserved 2.5 million common shares for the award of a variety of share-based compensation alternatives, including non-qualified stock options, incentive stock options, restricted stock, restricted stock units (RSUs), performance shares, performance units and stock appreciation rights (SARs).

While we have developed contingency plans to flex and shift production in the case of temporary shutdowns or closures of our manufacturing facilities, we may be unable to shift all impacted operations to alternatives sites. If we are unable to generate sufficient cash flow to meet our debt service obligations, we will have to pursue one or more alternatives, such as reducing or delaying capital or other expenditures, refinancing debt, selling assets, or raising equity capital. Non-GAAP financial measures have limitations as analytical tools and should not be considered in isolation from, or solely as alternatives to, financial measures prepared in accordance with GAAP.