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. Purchase price multiple rapidly declining on strength of business and synergy capture 7 $133 $201 2019PF 2022E 7 Clariant Color EBITDA Growth Purchase Price Multiple 10.8x 7.0x 6.4x 2019PF 2021 2022E w/ Full Synergies (1) (1) 11.9% 16.3% 2019PF 2022E EBITDA Margins (1) CLARIANT COLOR: TRANSFORMATIONAL ACQUISITION ($ in millions) (1) Financial information is pro forma to include a full year of Clariant Color business SUNBELT PVC Resins DSS 20 Acquisitions $4.8B Investment $2.7B of Annual Revenue 5 Divestments $2.3B Proceeds TPE PP&S HISTORIC SPECIALIZATION THROUGH M&A 8 Distribution DSM Protective Materials BOLT-ON ACQUISITION HISTORY 9 Commercial Resources Operating Income ($ in millions) Operating Margins 259 363 At Acquisition 2022E $40 $139 At Acquisition 2022E 9% 22% At Acquisition 2022E Established Acquisitions (> 7 years) + 40% + 248% + 1300 bps I N V E S T T O G R O W SPECIALTY TRANSFORMATION T O D A Y 7% 46% 67% 86% 100% 0% 20% 40% 60% 80% 100% 2005 2010 2019 2021 2022 PF % o f A d ju st ed E B IT D A • Commodity JVs • Distribution • Performance Products & Solutions • Specialty Businesses (1) Adjusted EBITDA is EBITDA excluding corporate costs and special items (2) Pro forma for the acquisition of Dyneema® and divestiture of Distribution (1 ) (2) 10 Healthcare 4% Packaging 8% Consumer 10% Building & Construction 43% Industrial 15% Transportation 14% Energy 4% Telecom. 2% 2006 2022 Pro Forma Healthcare 8% Packaging 23% Consumer 21% Building & Construction 10% Industrial 15% Transportation 9% Energy 4% Telecom. 4% Defense 6% END MARKET FOCUS ON LESS CYCLICAL INDUSTRIES 11 14.8% 17.6% 21.0% 2018 2020 2022 PF 1.8% 2006 15.3% 16.2% 17.0% 2018PF 2020PF 2022E CAI 2.7% 2006 SEM SPECIALTY EBITDA MARGIN EXPANSION 12 • Portfolio transformation accelerates growth in less cyclical, higher margin end markets • Investments in our composites platform continue to drive margin expansion (1) (1) (1) 2018 and 2020 financial information is pro forma to include a full year of Clariant Color acquisition PORTFOLIO EVOLUTION OVER THE YEARS 13 Adj. The Q3 2022 "Pro Forma APM" adjustments reflect periods prior to the acquisition date and are preliminary estimates for APM’s results for the months of July and August. 2 Reconciliation of Avient consolidated pro forma EBITDA Q3 2022 Q3 2021 Avient(1) Pro forma APM(1) Pro forma Avient Avient Pro forma APM Pro forma Avient Net income from continuing operations (27.8) 3.9 (23.9) 33.4 0.3 33.7 Income tax expense (1.2) 0.6 (0.6) 2.0 2.5 4.5 Interest expense 37.3 1.8 39.1 19.0 11.2 30.2 Depreciation and amortization 39.8 10.9 50.7 36.6 18.4 55.0 EBITDA 48.1 17.2 65.3 91.0 32.4 123.4 Special items, before tax 82.0 — 82.0 19.9 — 19.9 Interest expense included in special items (10.0) — (10.0) — — — Depreciation included in special items (0.8) — (0.8) (0.9) — (0.9) Adjusted EBITDA $ 119.3 $ 17.2 $ 136.5 $ 110.0 $ 32.4 $ 142.4 (1) - Q3 2022 Avient results reflect one month of APM’s results while owned by Avient, as the acquisition closed on September 1, 2022.

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 (TOTAL COMPANY) 23 Sales Adjusted EBITDA $3,981 $3,783 $4,300 2019PF 2020PF 2021E + 8% Adjusted EPS (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition (1) (1) (in millions) (in millions) (1)(1) + 27% + 61% (1) (1) 24 BALANCE SHEET • Deleveraging to 1.9x net debt to adjusted EBITDA by the end of 2021 • Driven by record adjusted EBITDA performance and strong free cash flow generation from asset light business • Future cash deployment: M&A, opportunistic share repurchases and balance sheet / continued leverage reduction 3.5x 2.7x 1.9x 2019PF 2020PF 2021E Net Debt / Adjusted EBITDA (1) (1) ($ in millions) 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.

Terms of disclosure for corporate questionnaire 2024 - CDP . https://www.cdp.net/en/info/terms-and-conditions/terms-of-disclosure/corporate-questionnaire 1 Contents 2 C1. They include: 1. You can read more about it here. 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.

1. 1. 检查热电偶和加热圈 1. 2. 3. 4. 5. 6. 1. 2. 3. 4. 1. 2. 1. 2. 1. 2. 1. 2. 3. 1. 2. 3.

Kunkle, Senior Vice President, General Counsel and Secretary(1) Bradley C. Crist, Senior Vice President, President of Color, Additives and Inks(1) EXECUTIVE COMPENSATION Non-Equity Incentive Plan Compensation (column (f)) Name 2018 Annual Incentive Program ($) 2016 – 2018 Cash-Settled Performance Units ($) All Other Compensation (column (g)) Company Contributions to Qualified Savings Plan. Other Benefits. 2018 Grants of Plan-Based Awards Target ($) (d) Estimated Future Payouts Under Equity Incentive Plan Awards Exercise or Base Price of Option Awards ($/Sh) (i) Threshold (#) (f) Estimated Future Payouts Under Non- Equity Incentive Plan Awards Name (a) Grant Date (b) Grant Date Fair Value of Stock and Option Awards ($) (j) Threshold ($) (c) Maximum ($) (e) All Other Stock Awards: Number of Shares of Stock or Units (#) (h) Target (#) (g) EXECUTIVE COMPENSATION Estimated Future Payouts Under Non-Equity Incentive Plan Awards (columns (c), (d) and (e)) (1) 2018 Annual Incentive Program Payments (2) Cash-Settled Performance Units.

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Figure 1. Picture of plaques originally made from preforms containing Fortis Amber-1 and Amosorb Solo2-2. BOTTLE COMPOSITION L* a* b* 95.91% Virgin PET/0.09% Fortis Amber-1/4% SolO2-2 76.9 3.6 39.5 50% Regrind/50% Virgin PET 83.5 2.8 19.5 50% Regrind/50% Virgin PET/0.045% Fortis Amber-1 75.6 5.5 34.5 RESULTS FOR RE-GRIND COMBINATION STUDY CONCLUSIONS Our study has shown that the combined use of Amosorb SolO2-2 and Fortis-Amber 1 in bottle applications allows for the material to be recycled through multiple recycle loops.

Base Resin PC PC/PSU PES PEI PP ABS PEEK PA Barrel Temperatures* °F (°C) Rear Zone 530–560 (277–293) 550–575 (288–302) 660–700 (349–371) 675–725 (357–385) 390–420 (199–216) 425–460 (219–238) 680–730 (360–388) 430–500 (221–260) Center Zone 515–560 (269–288) 540–565 (282–296) 650–690 (343–366) 655–710 (352–377) 380–405 (193–207) 415–450 (213–232) 670–710 (354–377) 420–490 (216–254) Front Zone 510–525 (266–274) 530–555 (277–291) 640–680 (338–360) 655–700 (346–371) 370–395 (188–202) 405–440 (207–227) 650–690 (343–366) 410–480 (210–249) Nozzle 520–535 (271–280) 540–565 (282–296) 650–690 (343–366) 665–710 (352–377) 380–400 (193–204) 415–450 (213–232) 660–700 (349–371) 420–490 (216–254) Melt Temperature 525–560 (274–293) 530–580 (277–304) 650–700 (343–371) 660–730 (349–388) 375–395 (191–202) 410–460 (210–238) 650–730 (343–388) 420–500 (216–260) Mold Temperature 175–250 (80–121) 160–220 (71–104) 280–350 (138–177) 275–350 (135–177) 100–135 (38–57) 150–180 (66–82) 300–425 (149–219) 160–230 (71–110) Pack & Hold Pressure 50%–75% of Injection Pressure Injection Velocity in/s 0.5–2.0 Back Pressure psi 50 Screw Speed rpm 40–70 40–70 40–70 40–70 40–70 40–70 40–70 40–70** Drying Parameters °F (°C) 6 hrs @ 250 (121) 4 hrs @ 250 (121) 4 hrs @ 275 (135) 4 hrs @ 250 (121) 3 hrs @ 300 (150) 2 hrs @ 200 (93) 3 hrs @ 275 (135) 4 hrs @ 180 (82) Cushion in 0.125–0.250 Screw Compression Ratio 2.0:1–2.5:1 2.0:1–2.5:1 2.5:1–3.5:1 2.5:1–3.5:1 2.5:1–3.5:1 2.5:1–3.5:1 2.5:1–3.5:1 2.5:1–3.5:1 Nozzle Type General Purpose General Purpose General Purpose General Purpose General Purpose General Purpose General Purpose Reverse Taper Clamp Pressure 5–6 Tons/in2 * A reverse temperature profile is important to obtain optimum conductive properties. Half-round runners are not recommended. • Only naturally balanced runner systems (“H” pattern) are recommended. • Runner diameters larger than 0.150" (3.8mm) and not exceeding 0.375" (9.5mm) are recommended. • Step each 90° bend in the system down in size (from sprue to gate) approximately 1/16" (1.5mm) to reduce pressure drop. • Place vents at each 90° intersection and vent to atmosphere. • Hot runner molds are acceptable and should be sized by the manufacturer. Draft Angle • Maintain a minimum draft angle of 1/2° per side.

Avient acquired the Clariant Color business on July 1, 2020 (the “Acquisition Date”). OUR VALUATION VERSUS PEERS 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 en t (2 01 1) A vi en t (2 01 6) A vi en t (2 02 1) A vi en t (T o da 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 SUMMARY: WHY INVEST IN AVIENT? Avient acquired Clariant Color on July 1, 2020 (the “Acquisition Date”).

Playbook in current environment 1. Executing flawlessly and continue advancing our strategy while prioritizing investments and resources for our growth vectors 1. 2. 3. 4. 5. 6. Color, Additives & Inks END MARKETS REGIONS 34% 21% 15% 11% 8% Packaging Telecom 1%Energy 1% 34% US & Canada Latin America Europe, Middle East Construction 15Copyright © .