Figure 1. Regarding tensile properties, three additional categories granted positive marks: 1. REFERENCES 1.

Avient acquired the Clariant Masterbatch business (CMB) on July 1, 2020 (the “Acquisition Date”). Q 2 2 0 2 1 P E R F O R M A N C E U P D AT E $69 $122 2020PF 2021 $0.42 $0.87 2020PF 2021 Q2 2021 – ORGANIC PERFORMANCE ( T O TA L C O M PA N Y ) 4 Sales Adjusted Operating Income $870 $1,235 2020PF 2021 + 42% Adjusted EPS + 77% + 107% (in millions) (in millions) (1) (1) (1) (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition Q2 2021 SEGMENT PERFORMANCE 5 CAI $488 $624 Sales ($ in millions) SEM Distribution $54 $86 Operating Income +28% +59% $239 $404 Sales $15 $24 Operating Income +69% +60% (1) $159 $241 Sales $17 $37 Operating Income +52% +118% (1) (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition SPECIALTY EBITDA MARGIN EXPANSION 6 CAI (1) 2018-2020 financial information is pro forma to include a full year of Clariant Masterbatch business acquisition 15.3% 15.2% 16.2% 18.5% 2018 2019 2020 YTD 2021 14.8% 15.2% 17.6% 19.1% 2018 2019 2020 YTD 2021 (1) SEM • Continued portfolio transformation to high-growth end markets and sustainable solutions • Clariant Masterbatch synergy realization • Investments in composites and outdoor high performance applications drive growth and mix improvements CAI EBITDA MARGIN EXPANSION 7 Legacy CAI 18.9% 18.9% 20.3% 2019 2020 YTD 2021 Legacy Clariant MB 11.9% 13.8% 16.8% 2019 2020 YTD 2021 • Synergy capture translating to the bottom line • Positive mix with growth in healthcare, consumer and packaging end-markets • World-class vitality index of 35% represents sales from products introduced in the last five years. Clariant MB acquired July 1, 2020 COLORWORKS I N S P I R AT I O N .

Microsoft PowerPoint - Avient February IR Meetings AVIENT CORPORATION (NYSE: AVNT) F E B R U A R Y 1 7 - 1 8 , 2 0 2 1 I N V E S T O R M E E T I N G S H O S T E D B Y G O L D M A N S A C H S A N D M O R G A N S T A N L E Y D I S C L A I M E R 2 Forward-Looking Statements In this presentation, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. 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 a re 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! Avient acquired the Clariant Masterbatch business (CMB) on July 1, 2020 (the “Acquisition Date”).

On December 1, 2023, Mr. Kunkle — 4,022(1) 321,750(1) 643,500(1) — — — — — — 28,875(2) 231,000(2) 462,000(2) — — — — — 2/17/2023 — — — 7,083(3) 21,250(3) — 42.93 269,117 11/1/2023 — — — (4) (4) — 42.93 95,223 11/1/2023 — — — (4) (4) — 52.64 27,135 11/1/2023 — — — (4) (4) — 42.27 5,130 2/17/2023 — — — — — 6,300(6) — 270,459 11/1/2023 — — — — — (7) — 151,675 11/1/2023 — — — — — (7) — 69,605 11/1/2023 — — — — — (7) — 15,354 R.M. Patterson was our First PEO from January 1 - December 1.

Avient acquired the Clariant Masterbatch business (CMB) on July 1, 2020 (the “Acquisition Date”). Reduce Scope 1 & 2 greenhouse gas emissions by 35%. Operating Income $3,783 $4,100 2020PF 2021E Adjusted EPS (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition Previous Guidance Current Guidance $3,783 $4,300 2020PF 2021E $308 $360 2020PF 2021E $308 $410 2020PF 2021E $1.93 $2.40 2020PF 2021E $1.93 $2.80 2020PF 2021E (1) (1)(1) (1)(1) (1) (in millions) (in millions) $442 $457 $560 2019PF 2020PF 2021E $1.74 $1.93 $2.80 2019PF 2020PF 2021E FULL YEAR 2019 – 2021 ORGANIC GROWTH ( T O TA L C O M PA N Y ) 23 Sales Adjusted EBITDA $3,981 $3,783 $4,300 2019PF 2020PF 2021E + 8% Adjusted EPS (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition (1) (1) (in millions) (in millions) (1)(1) + 27% + 61% (1) (1) 24 BA L A N C E S H E E T • Deleveraging to 1.9x net debt to adjusted EBITDA by the end of 2021 • Driven by record adjusted EBITDA performance and strong free cash flow generation from asset light business • Future cash deployment: M&A, opportunistic share repurchases and balance sheet / continued leverage reduction 3.5x 2.7x 1.9x 2019PF 2020PF 2021E Net Debt / Adjusted EBITDA (1) (1) ($ in m illions) 2021E Adjusted EBITDA 560$ Free Cash Flow 275$ Total Debt 1,860 Less: Cash (800) Net Debt 1,060$ 2021E Net Debt / Adjusted EBITDA 1.9x (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition PEER COMPARISONS 25 As a specialty formulator, we don’t require significant capital investment, as compared to the base resin raw material suppliers we purchase from.

https://www.cdp.net/en/info/terms-and-conditions/terms-of-disclosure/corporate-questionnaire 1 Contents 2 C1. They include: 1. https://www.avient.com/idea/eco-conscious-alternative-coloring-textiles [Fixed row] (9.15.1) Indicate whether you have targets relating to water pollution, water withdrawals, WASH, or other water-related categories.

Avient acquired the Clariant Color business on July 1, 2020 (the “Acquisition Date”). O U R VA LUATI O N V E R S U S P E E R S Avient Specialty Formulators Other Chemical/Specialty Companies 5.4 8.5 10.1 10.0 15.7 15.0 14.2 12.7 10.2 25.0 19.7 17.7 13.2 12.3 10.0 9.9 8.9 8.5 8.3 6.6 A vi e n t (2 0 1 1 ) A vi e n t (2 0 1 6 ) A vi e n t (2 0 2 1 ) A vi e n t (T o d a y) R P M K W R P P G A V Y F U L A L B E C L H X L A S H F M C B N R E M N U N V R C E S C L H U N Historic Multiple S U M M A RY: W H Y I N V E S T I N AV I E N T ? Avient acquired Clariant Color on July 1, 2020 (the “Acquisition Date”).

Microsoft PowerPoint - Avient Q4 Earnings and 2021 Outlook PRINT AVIENT CORPORATION F O U R T H Q U A R T E R 2 0 2 0 R E S U L T S A N D 2 0 2 1 F I N A N C I A L G U I D A N C E (NYSE: AVNT) F E B R U A R Y 9 , 2 0 2 1 D I S C L A I M E R 2 Forward-Looking Statements In this presentation, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. 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) 7 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 8 • 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 9 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 a re 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! Avient acquired the Clariant Masterbatch business (CMB) on July 1, 2020 (the “Acquisition Date”).

Pro Forma Financial Information The Company acquired Avient Protective Materials (“Dyneema”) on September 1, 2022 (the “Acquisition Date”) and sold the Distribution segment on November 1, 2022. To provide comparable results, the company references “pro forma” financial metrics, which include the business results of Avient Protective Materials for periods prior to the Acquisition Date, as if the transaction occurred on January 1, 2021 and reflect Distribution as a discontinued operation. Avient 2011, 2018 and 2021 multiples reflect trailing 12 months EBITDA at December 31. 28 EV / 2023E EBITDA 6.5 8.5 11.0 10.8 16.1 15.5 14.1 14.0 10.3 21.0 19.0 14.3 12.1 11.8 11.7 11.5 9.7 20 11 20 18 20 21 20 23 R P M A V Y P P G K W R FU L E C L H X L S C L C E FM C A S H H U N E M N Avient Historic Multiple Avient Specialty Formulators Other Specialty / Chemical Companies A P P E N D I X 30 Performance Additives 16% Pigments 12% TiO2 10% Dyestuffs 2% Polyethylene 11% Nylon 6% Polypropylene 5% Styrenic Block Copolymer 5% Other Raw Materials 33% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials 2022 pro forma results for the acquisition of Avient Protective Materials RA W MATERIAL BASKET SEGMENT DATA U.S. & Canada 40% EMEA 37% Asia 18% Latin America 5% 2022 PRO FORMA SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS Consumer 20% Packaging 24% Industrial 15% Building and Construction 10% Telecommunications 4% Energy 4% Defense 6% END MARKET REVENUE $2,355M $402M $1,300M $272M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $592M$3,653M (1) Transportation 9% Healthcare 8% 32 (1) Total company sales and adjusted EBITDA of $3,653M and $592M, respectively, include intercompany sales eliminations and corporate costs 2 0 2 2 R E V E N U E | $ 2 . 4 B I L L I O N US & Canada 34% EMEA 38% Asia 20% Latin America 8% END MARKET REGION 33 Packaging 34% Consumer 21% Healthcare 8% Industrial 15% Transportation 8% Building & Construction 11% Telecommunications 1% Energy 2% COLOR, ADDITIVES & INKS 2 0 2 2 P R O F O R M A R E V E N U E | $ 1 . 3 B I L L I O N US & Canada 52% EMEA 35% Asia 13% 34 Packaging 5% Consumer 19% Healthcare 8%Industrial 16% Transportation 10% Telecommunications 10% Energy 9% Defense 15% Building & Construction 8% END MARKET REGION SPECIALTY ENGINEERED MATERIALS Packaging 32% Consumer 27% Healthcare 8% Industrial 14% Building & Construction 5% Telecommunications 3% Energy 1% Defense 1% Asia (18% of sales) Transportation 9% 2 0 2 2 P R O F O R M A AV I E N T R E G I O N A L S A L E S Packaging 27% Consumer 14% Healthcare 5% Industrial 17% Building & Construction 10% Energy 5% Defense 8% EMEA (37% of sales)Transportation 11% Packaging 13% Consumer 24% Healthcare 12% Industrial 15% Building & Construction 13% Energy 5% Defense 5% US & Canada (40% of sales) Transportation 7% Packaging 56% Consumer 23% Healthcare 4% Industrial 7% Building & Construction 4% Telecommunications 1% LATAM (5% of sales) Transportation 5% Telecommunications 3% Telecommunications 6% 35 B Y E N D M A R K E T Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) 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.

GUIDELINES FOR USING CESA CLEAN ADDITIVES • Cesa Clean works best when molded maintaining normal (injection) pressure/shear • For best results, Avient recommends a “Running Color Change” which eliminates breaks in the molding cycle • Since the Cesa Clean concentrate will expand, it is recommended to reduce the shot size by 20% • It is designed for use at a let-down ratio (LDR) of 3.0% or (33:1); however, use rate can vary depending on the severity of the contamination but typically is 2.0–4.0% (a use rate higher than 6.0% may not have any positive affect on the cleaning performance) • Using Cesa Clean as a routine part of your color change rotation will allow faster changes and consume a minimal amount of raw material - Note: If the manifold is not cleaned routinely, this process may be more time consuming and additional material will be required • It is best to process at your normal polymer processing temperatures - For best performance, stock temperature should be at least 400°F - If 400°F is achieved during the purging process, no additional activation will occur during the reprocessing of regrind - All parts produced during the “Running Purge Cycle” should be captured as regrind, resulting in a scrap-free color change - If using sequential gates, open and close all gates at the same time while purging the tool - If contamination appears to be coming from one gate, open and close first, and for an extended period of time, to force more material through this location - When cleaning in this manner, pay close attention to shot size - Parts containing the previous or new color plus any Cesa Clean can be used as regrind INTRODUCING CESA CLEAN TO YOUR PROCESS Hand Blend • Hand weigh enough of the Cesa Clean and natural resin mix to equate to 3–5 times the barrel capacity • Use rate should be 3.0% or 33:1 for routine cleaning • For difficult-to-clean tooling, or tooling which is not routinely cleaned, start at 4.0% or 25:1 • Note: Do not attempt to vacuum load more than 15 feet from source as stratification/separation may occur Volumetric Feeder • Calibrate feeder to dispense 3.0% or 33:1 for routine cleaning • For difficult-to-clean tooling, or tooling which is not routinely cleaned, start at 4.0% or 25:1 • This style of feeder is highly recommended for at-the-throat metering of Cesa Clean Blending Units Most blenders have an extra bin for an additive • Fill the additive bin with Cesa Clean • Set blender to introduce the Cesa Clean at 2.0 to 4.0% • Note: Do not air convey any further than 15 feet as Cesa Clean has a high density and may separate from the mix.