Just a few months ago, we completed the acquisition of the Clariant Masterbatch business, the largest acquisition in the 20-year history of our company. Tenure of our relationships with multi-national OEMs exceeds 15 years. Purchase price multiple rapidly declining on strength of business and synergy capture (1) (1) (1) (1) (1) (1) (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition ($ in millions) 13 SEM CAI Avient • Composites and Outdoor High Performance applications drove positive mix within SEM • Clariant Masterbatch synergy realization under way and expected to drive further margin expansion in 2021 • Portfolio transformation to high growth end markets with focus on sustainable solutions megatrend 10.1% 11.8% 2019PF 2020 (1) (1) EBITDA MARGIN EXPANSION Distribution 6.3% 6.0% 15.2% 17.6% 11.1% 12.1% 2019PF 2020PF 14.5% 19.8% 13.5% 16.1% 6.4% 6.3% 15.2% 16.2% (1) (1) Full YearQ4 (2) (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition (2) Total company reflects adjusted EBITDA margins SPOTLIGHT: COMPOSITES 14 • SEM delivers a record year in 2020 – 13% operating income growth and over 200 bps in margin expansion year-over-year • Prior investments in composites platform and outdoor high performance applications paying off, resulting in substantial growth over the last two years SEM Operating Income (OI % of Sales) ($ in millions) $(0.1) $(1.0) $2.2 $19.1 $26.8 2016 2017 2018 2019 2020 Composites Performance (Operating Income) $83.7 $94.4 2019 2020 (11.2%) (13.3%) 0.1 0.1 0.2 0.5 0.6 0.7 0.8 0.9 0.9 1.0 11 12 13 14 15 16 17 18 19 20 $19 $160 $338 2011 2019 2020 0.16 0.20 0.26 0.34 0.42 0.50 0.58 0.72 0.79 0.81 0.85 11 12 13 14 15 16 17 18 19 20 21E FREE CASH FLOW AND CAPITAL ALLOCATION 15 Free Cash Flow Dividends Share Repurchases Deleveraging 3.5x 2.7x 2019PF 2020PF Growing Dividend Cumulative Buybacks Net Leverage $B n $ p e r sh ar e Cash Generation (1) (1) ~$1Bn REPURCHASED OVER LAST 10 YEARS ~$350MM PAID OVER LAST 10 YEARS ~$338MM 2.7x NET LEVERAGE (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition GREAT PLACE TO WORK!

EPS of $0.76 in line with guidance Copyright © . 2025 4 Q1 2025 organic revenue growth - by region (3%) +2% +9% +17% Year-over-year revenue growth, excludes the impact of foreign exchange US & Canada Europe, Middle East & Africa Asia Latin America 5Copyright © . EBITDA - full year 2025 $540 to 570M +4% to +10% growth excluding FX ADJ. EPS - full year 2025 $2.70 to $2.94 ADJ.

The non-GAAP financial measures include: Adjusted Earnings Per Share, Net Debt / Adjusted EBITDA, and Adjusted EBITDA. Avient does not provide reconciliations of forward-looking non-GAAP financial measures, such as outlook for Adjusted EBITDA, Adjusted Earnings Per Share and Free Cash Flow, to the most comparable GAAP financial measures on a forward-looking basis because Avient is unable to provide a meaningful or accurate calculation or estimation of reconciling items and the information is not available without unreasonable effort. Management excludes intangible asset amortization from adjusted EPS as it believes excluding acquired intangible asset amortization is a useful measure of current period earnings per share.

EHS Metrics includes estimated full year performance of APM aquisition Average hours of training per year per employee

The Company does not provide reconciliations of forward-looking non-GAAP financial measures, such as outlook for adjusted EBITDA, adjusted earnings per share, adjusted operating income and free cash flow, to the most comparable GAAP financial measures on a forward-looking basis because the Company is unable to provide a meaningful or accurate calculation or estimation of reconciling items and the information is not available without unreasonable effort. Develop and implement solutions to end plastic waste while supporting AEPW $1.5B investment in key initiatives. 2030 SUSTAINABILITY TARGETS 15 PEER COMPARISONS 16 $442 $457 $560 2019PF 2020PF 2021E $1.74 $1.93 $2.80 2019PF 2020PF 2021E FULL YEAR 2019 – 2021 ORGANIC GROWTH (TOTAL COMPANY) 17 Sales Adjusted EBITDA $3,981 $3,783 $4,300 2019PF 2020PF 2021E + 8% Adjusted EPS (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition (1) (1) (in millions) (in millions) (1)(1) + 27% + 61% (1) (1) As a specialty formulator, we don’t require significant capital investment, as compared to the base resin raw material suppliers we purchase from. Free cash flow conversion calculated as (EBITDA – Capex) / EBITDA Median: 84% Median: 77% HIGH FREE CASH FLOW CONVERSION Avient reflects 2021 estimated EBITDA of $560M and excludes one-time synergy capture CAPEX ($20M) Source: Peer data per Bloomberg market data as of April 27, 2021 87 89 87 86 82 81 76 88 87 84 82 81 78 77 77 77 76 73 70 69 50 19 A vi en t K W R P P G R P M A V Y F U L G C P F M C IF F H X L U N V R E C L A S H C E B N R F O E E M N G R A H U N K R A S C L A L B Source: Peer data per Bloomberg market data as of April 27, 2021 Total Enterprise Value / 2021E EBITDA Our current valuation with updated guidance implies an EBITDA multiple that is below specialty formulator peers and the majority of our chemical peers.

D is t. ) K W R P P G F U L R P M A V Y F M C H U N H X L S C L E C L E M N C E A S H Source: Peer data per Bloomberg market data as of February 15, 2022. Free cash flow conversion calculated as (EBITDA – Capex) / EBITDA HIGH FREE CASH FLOW CONVERSION Avient reflects 2021 estimated EBITDA of $635M and estimated CAPEX of $90M (excludes IT system upgrade of $25M and synergy capture CAPEX of $20M) Source: Peer data per Bloomberg market data as of February 15, 2022 86 89 85 80 76 76 89 85 79 78 76 76 76 70 69 63 8 A vi e nt K W R P P G F U L A V Y R P M F M C U N V R H U N B N R H X L E C L C E A S H E M N S C L A LB Source: Peer data per Bloomberg market data as of February 15, 2022 Total Enterprise Value / 2022E EBITDAWith the Clariant Color business acquisition and divestment of the PP&S business, our exposure is now concentrated in less-cyclical and high-growth markets. Over the last 10 years, our multiple has expanded as we have progressed in our portfolio transformation.

The Company does not provide reconciliations of forward-looking non-GAAP financial measures, such as outlook for Adjusted EBITDA, Adjusted Earnings Per Share, Adjusted Operating Income and Free Cash Flow, to the most comparable GAAP financial measures on a forward-looking basis because the Company is unable to provide a meaningful or accurate calculation or estimation of reconciling items and the information is not available without unreasonable effort. D is t. ) K W R P P G A V Y F U L R P M G C P H X L F M C H U N IF F E C L A S H K R A E M N C E S C L A LB Median: 5%Median: 3% Source: Peer data per Bloomberg market data as of July 28, 2021 Avient reflects 2021 estimated revenue of $4,650M and excludes one-time synergy capture CAPEX ($20M) Avient Specialty Formulators Other Chemical/Specialty Companies Free Cash Flow Conversion (1) 2021E (%) Being asset light helps us to generate strong free cash flow that is in line with specialty formulators. Free cash flow conversion calculated as (EBITDA – Capex) / EBITDA Median: 81% Median: 78% HIGH FREE CASH FLOW CONVERSION Avient reflects 2021 estimated EBITDA of $580M and excludes one-time synergy capture CAPEX ($20M) Source: Peer data per Bloomberg market data as of July 28, 2021 87 90 86 82 80 78 73 87 82 82 79 79 78 78 77 76 71 67 46 A vi en t K W R P P G A V Y F U L R P M G C P F M C U N V R C E IF F A S H E C L B N R E M N H X L H U N K R A S C L A L B (6) Source: Peer data per Bloomberg market data as of July 28, 2021 Total Enterprise Value / 2021E EBITDA Our current valuation with updated guidance implies an EBITDA multiple that is below specialty formulator peers and the median of other selected chemical / specialty companies.

Our 2024 injury incident rate was an all-time record low and reflective of the safest year in our company’s history. Last year, prominent third-party ratings and ranking firms recognized our ongoing improvements. Management excludes intangible asset amortization from adjusted EPS as it believes excluding acquired intangible asset amortization is a useful measure of current period earnings per share.

AVNT-2022.06.30-News Release 1 NEWS RELEASE FOR IMMEDIATE RELEASE Avient Announces Second Quarter 2022 Results • Second quarter sales grew to $1.3 billion, a 5% increase over the prior year quarter, and an all-time quarterly record • GAAP EPS increased 24% to $0.92 compared to $0.74 in the prior year quarter • Adjusted EPS increased 13% to $0.98 compared to $0.87 in the prior year quarter, exceeding second quarter guidance of $0.92. The company delivered second quarter GAAP EPS of $0.92 compared to $0.74 in the prior year quarter. Without giving effect to any impacts from the pending acquisition of Dyneema and potential sale of Avient Distribution, the company provided third quarter adjusted EPS guidance of $0.80, a 14% increase from the prior year quarter, and maintained its full year adjusted EPS guidance of $3.50.

Second quarter GAAP and adjusted earnings per share (EPS) were $0.24 and $0.63, respectively. We are maintaining our full year adjusted EPS guidance of $2.40 on lower estimated sales of $3.3 billion,” said Mr. Avient will share further information regarding second quarter results and full-year guidance during its previously scheduled webcast at 8:00 a.m.