Are data management facilities needed? VALUE BENEFITS OF USING FLEXCART™ AND PLANETPAK™ COMPONENTS FlexCart & PlanetPak components offer a market leading metering technology: • Robust and dependable system control • Reliable yield (typically 99% using PlanetPak) and sustainable packaging • Data networking and remote Internet support capabilities • Simplified changeover with interchangeable cassettes of color and additives ATTRIBUTE FLEXCART Footprint (LxW cm) 86 x 71 Controller options 3000/Flex G 5000/6000 Typical max. throughput (kg/hr) 1000+ Max. metering rate (cc/s) 10 Continuous use Yes Transfer pumps PC/Peri Metering pumps PC/Peri Interchangeable cassette Yes Note: PC = Progressing Cavity Pump Peri = Peristatic Pump PLANETPAK™ CONTAINERS The FlexCart system is designed to work with the standardized PlanetPak container range of packaging, typically achieving 99% reliable yield while also achieving a sustainable packaging format that is fully recyclable. ATTRIBUTE PC PUMP PERI PUMP CMG3000 FLEX G CMG5000 CMG6000 Delivery throughput High Low – – – – Metering throughput High Low – – – – Volumetric/gravimetric V V V Loss-in-weight G G Data export/network – – No Yes Yes Yes Touch screen – – No Yes Yes Yes Multiple log-in levels – – No No Yes Yes The range of progressing cavity pump rates attainable can be used to determine the correct size of pump.

FIBERGLASS FIBERS PROCESSES PRODUCTS This data is provided for informational purposes only, and does not constitute a specification. °C TBD FIBERGLASS BARE FIBER PERFORMANCE FIBERGLASS DATA E-Glass S-Glass * Equilibrium moisture regain @ 55% RH ** Creep @ 40%-58% ultimate tensile strength *** Shrinkage in dry air @ 177 C for 30 minutes ABOUT FIBER-LINE® For over 25 years, FIBER-LINE® has provided science- driven expertise that improves the performance and the end-use processing of high performance fibers. Uranusweg 3 8938 AJ Leeuwarden The Netherlands +31(0) 58 216 75 99 info@fiber-line.com NOTICE: The information and data contained herein do not constitute sales specifications.

Abrasion  Yarn on Yarn Abrasion Ultraviolet (UV) Flame (Acid) (Alkali) (Organic Solvent) P O P P P P P This data is provided for informational purposes only, and does not constitute a specification. NOMEX® META-ARAMID DATA META-ARAMID (HM) BARE FIBER PERFORMANCE * Equilibrium moisture regain @ 55% RH ** Creep @ 40%-58% ultimate tensile strength *** Shrinkage in dry air @ 177 C for 30 minutes ABOUT FIBER-LINE® LOCATIONS Headquarters, R&D, Manufacturing FIBER-LINE® LLC 3050 Campus Drive Hatfield, PA 19440 +1 215.997.9181 fiber@fiber-line.com Manufacturing Operations FIBER-LINE® LLC 280 Performance Drive SE Hickory, NC 28602 +1 828.326.8700 fiber@fiber-line.com EMEA & Asia Pacific Operations FIBER-LINE® INTERNATIONAL B.V. Uranusweg 3 8938 AJ Leeuwarden The Netherlands +31(0) 58 216 75 99 info@fiber-line.com NOTICE: The information and data contained herein do not constitute sales specifications.

This data is provided for informational purposes only, and does not constitute a specification. POLYBENZYLOATE (PBO) DATA POLYBENZYLOATE (PBO) BARE FIBER PERFORMANCE * Equilibrium moisture regain @ 55% RH ** Creep @ 40%-58% ultimate tensile strength *** Shrinkage in dry air @ 177 C for 30 minutes  ABOUT FIBER-LINE® LOCATIONS Headquarters, R&D, Manufacturing FIBER-LINE® LLC 3050 Campus Drive Hatfield, PA 19440 +1 215.997.9181 fiber@fiber-line.com Manufacturing Operations FIBER-LINE® LLC 280 Performance Drive SE Hickory, NC 28602 +1 828.326.8700 fiber@fiber-line.com EMEA & Asia Pacific Operations FIBER-LINE® INTERNATIONAL B.V. Uranusweg 3 8938 AJ Leeuwarden The Netherlands +31(0) 58 216 75 99 info@fiber-line.com NOTICE: The information and data contained herein do not constitute sales specifications.

Rijkaart van Cappellen di Amsterdam (Pasi Bassi) in data 10 novembre 2021 e debitamente apostilla- to portante il cambio della denominazione della Società in "Avient S.à r.l.". Sono stati allegati al suddetto documento: - il consenso espresso per iscritto dal Consiglio di Ammini- strazione della Società, redatta in inglese, debitamente au- tenticata e apostillata; - copia conforme della delibera del socio unico in data 8 no- vembre 2021, redatta in doppia lingua inglese e francese, de- bitamente autenticata e apostillata; - lo statuto aggiornato della Società, redatto in doppia lin- gua inglese e francese, debitamente apostillato; 2. estratto della Società dal Registro delle Società e del Commercio del Lussemburgo in data 12 novembre 2021, redatto in lingua francese e debitamente apostillato, portante la nuova denominazione sociale.

NOVOLOID FIBERS PROCESSES PRODUCTS This data is provided for informational purposes only, and does not constitute a specification. °C > 150 NOVOLOID NOVOLOID DATA Standard Modulus * Equilibrium moisture regain @ 55% RH ** Creep @ 40%-58% ultimate tensile strength *** Shrinkage in dry air @ 177 C for 30 minutes  CHEMICAL COMPATIBILITY Chemical Resistance to Acid: Degrades in concentrated or hot Nitric and Sulfuric acid. Uranusweg 3 8938 AJ Leeuwarden The Netherlands +31(0) 58 216 75 99 info@fiber-line.com NOTICE: The information and data contained herein do not constitute sales specifications.

Are data management facilities needed? VALUE BENEFITS OF USING THE FLEXCART MICRO SYSTEM The FlexCart Micro metering system is market leading: • Robust and dependable system control • Reliable yield (typically 95%+) and sustainable packaging • Capability of data networking and remote internet support • Small footprint & LN standard recyclable delivery packaging FLEXCART™ MICRO LIQUID METERING SYSTEM Combined with sustainable delivery packaging ATTRIBUTE FLEXCART MICRO Footprint (LxW cm) 60 x 35 Controller options 3000 5000 Typical max. throughput (kg/hr) 250 Max. metering rate (cc/s) 10 Continuous use No Transfer pumps N/A Metering pumps PC/Peri Interchangeable cassette Yes Note: PC = Progressing Cavity Pump Peri = Peristatic Pump PLANETPAK™ CONTAINERS AND LN PACKAGING OPTIONS The FlexCart suite of metering systems is designed to work with the standardized PolyOne range of packaging typically achieving 99% reliable yield on continuous operating systems, while at the same time also achieving a sustainable packaging format in terms of full recyclability. ATTRIBUTE PC PUMP PERI PUMP CMG 3000 CMG 5000 Metering throughput High Low – – Volumetric/gravimetric V V V V/G Data export/network – – No Yes Touch screen – – No Yes Multiple log-in levels – – No Yes The range of progressing cavity pump rates attainable can be usedto determine the correct size of pump.

TIER 1 SUPPLIER S E A T B U C K L E S Y S T E M • Rapid development of 3 colors for global OEM platform, for 3 materials (POM, SAN, PP) • Help Tier 1 transition from printing to laser marking of buckles • Develop formulation that offers laser marking solution plus color • Quick reaction to develop three colors for this global vehicle launch • Smartbatch™ color + laser marking formulation met requirements for critical safety components Smartbatch™ Combination Colorants & Additives KEY REQUIREMENTS WHY AVIENT?

We held our priorities firm by keeping health and safety first, providing world-class service to our customers, and utilizing our unique position to aid in recovery efforts as an essential supplier throughout the world.” 2021 Outlook Commenting on the Company’s 2021 outlook, Mr. 2) Tax adjustments include the net tax benefit/(expense) from one-time income tax items, adjustments to uncertain tax position reserves and deferred income tax valuation allowances. 8 Attachment 4 Condensed Consolidated Balance Sheets (Unaudited) ASSETS Current assets: Cash and cash equivalents $ 649.5 $ 864.7 Accounts receivable, net 516.6 330.0 Inventories, net 327.5 260.9 Other current assets 89.9 57.7 Total current assets 1,583.5 1,513.3 Property, net 694.9 407.4 Goodwill 1,308.1 685.7 Intangible assets, net 1,008.5 469.3 Operating lease assets, net 80.9 63.8 Other non-current assets 195.4 133.8 Total assets $ 4,871.3 $ 3,273.3 LIABILITIES AND SHAREHOLDERS' EQUITY Current liabilities: Short-term and current portion of long-term debt $ 18.6 $ 18.4 Accounts payable 471.7 287.7 Current operating lease obligations 25.1 21.0 Accrued expenses and other current liabilities 289.2 375.4 Total current liabilities 804.6 702.5 Non-current liabilities: Long-term debt 1,854.0 1,210.9 Pension and other post-retirement benefits 115.0 56.6 Deferred income taxes 150.7 63.5 Non-current operating lease obligations 56.0 42.8 Other non-current liabilities 192.8 144.3 Total non-current liabilities 2,368.5 1,518.1 SHAREHOLDERS' EQUITY Avient shareholders’ equity 1,683.6 1,051.9 Noncontrolling interest 14.6 0.8 Total equity 1,698.2 1,052.7 Total liabilities and equity $ 4,871.3 $ 3,273.3 9 Attachment 5 Condensed Consolidated Statements of Cash Flows (Unaudited) Year Ended 2020 2019 Operating activities Net income $ 133.4 $ 588.8 Adjustments to reconcile net income to net cash provided by operating activities: Gain on sale of business, net of tax — (457.7) Depreciation and amortization 111.8 87.5 Accelerated depreciation and fixed asset charges associated with restructuring activities 3.2 — Deferred income tax benefit (1.1) (3.2) Share-based compensation expense 11.3 11.6 Changes in assets and liabilities, net of the effect of acquisitions: (Increase) decrease in accounts receivable (4.6) 29.7 Decrease in inventories 40.2 40.2 Increase (decrease) in accounts payable 79.5 (22.7) Increase (decrease) in pension and other post-retirement benefits 30.7 (19.7) Increase in post-acquisition earnout liabilities 1.0 36.4 (Decrease) increase in accrued expenses and other assets and liabilities - net (3.7) 9.9 Taxes paid on gain on sale of business (142.0) — Payment of post-acquisition date earnout liability (38.1) — Net cash provided by operating activities 221.6 300.8 Investing activities Capital expenditures (63.7) (81.7) Business acquisitions, net of cash acquired (1,380.2) (119.6) Net proceeds from divestiture 7.1 761.8 Net proceeds from other assets 5.2 51.4 Net cash (used) provided by investing activities (1,431.6) 611.9 Financing activities Debt offering proceeds 650.0 — Borrowings under credit facilities — 963.4 Repayments under credit facilities — (1,083.9) Purchase of common shares for treasury (22.4) (26.9) Cash dividends paid (71.3) (60.3) Repayment of other debt — (1.8) Repayment of long-term debt (7.8) (6.5) Payments on withholding tax on share awards (2.3) (2.1) Debt financing costs (9.5) (0.2) Equity offering proceeds, net of underwriting discount and issuance costs 496.1 — Payment of acquisition date earnout liability (50.8) — Net cash provided (used) by financing activities 982.0 (218.3) Effect of exchange rate changes on cash 12.8 (0.6) (Decrease) increase in cash and cash equivalents (215.2) 693.8 Cash and cash equivalents at beginning of year 864.7 170.9 Cash and cash equivalents at end of year $ 649.5 $ 864.7 10 Attachment 6 Business Segment Operations (Unaudited) Operating income at the segment level does not include: special items as defined in Attachment 3; corporate general and administration costs that are not allocated to segments; intersegment sales and profit eliminations; share-based compensation costs; and certain other items that are not included in the measure of segment profit and loss that is reported to and reviewed by the chief operating decision maker.

Expand EBITDA margins to 20% 3. Q1 2023 (TOTAL COMPANY) $846 $829 $134 $143 17.3% (in millions) $0.63 $0.76 (in millions) + 7% + 21% Sales Adjusted EBITDA Adjusted EPS 9 - 2% 15.8% +150 bps Q1 2024 SEGMENT PERFORMANCE (COLOR, ADDITIVES & INKS) $537 $515 $91 $97 18.8% (in millions) (in millions) + 7% 10 - 4% 17.0% +180 bps • Year over year demand continues to improve for the segment but slowly due to continued weakness in Europe • Raw material deflation & cost reduction actions primary drivers of adjusted EBITDA growth and margin expansion of +180 bps vs Q1 2023 Q1 2024 SEGMENT PERFORMANCE (SPECIALTY ENGINEERED MATERIALS) $310 $314 $64 $73 23.2% (in millions) (in millions) + 14% 11 + 1% 20.8% +240 bps • Sales growth in defense end market offset by weaker demand in telecommunications end market • Raw material deflation and favorable mix impact from defense sales primary drivers of adjusted EBITDA growth and margin expansion of +240 bps vs Q1 2023 Q1 EBITDA BRIDGE (TOTAL COMPANY) 12 $ millions CAI: Price / Mix (1) Deflation 16 SEM: Price / Mix 4 Deflation 7 Net Price Benefit 26 Wage/Other Inflation (9) FX (2) Q1 2024 $143 Adjusted EBITDA Q1 2023 $ 134 Demand (6) • Positive net price benefit: o Favorable raw material deflation in both segments • Wage and other inflation more than offset cost reductions/synergies 2024 G U IDA N CE FY 2024 GUIDANCE Original Revised Adjusted EBITDA $505 to $535 million $510 to $535 million Adjusted EPS $2.40 to $2.65 $2.50 to $2.65 Interest Expense $105 to $110 million $105 million Adjusted Effective Tax Rate 23% to 25% 23% to 25% Capital Expenditures ~$140 million ~$140 million 14 Q2 2024: Adjusted EPS of $0.71 CE O “TO P O F M IN D ” FO CU S ARE A S AREAS OF FOCUS 16 +7% Drive Profitable Organic Top-Line Growth with Margin Expansion Amplify Innovation Build Leadership & Talent Pipeline AP P EN D IX 19 Performance Additives 15% Pigments TiO2 Dyestuffs Polyethylene 10%Nylon Polypropylene Styrenic Block Copolymer Other Raw Materials 38% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials RAW MATERIAL BASKET SEGMENT DATA U.S. & Canada 41% 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS 19% 23%Industrial Building and END MARKET REVENUE $2,007M $358M $1,138M $224M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $502M$3,143M (1) 21 (1) Total company sales and adjusted EBITDA of $3,143M and $502M, respectively, include intercompany sales eliminations and corporate costs 2023 REVENUE | $2 .0 B ILL ION 34% 37% 21% END MARKET REGION 22 34% 21% 15% Building & 1% Energy COLOR, ADDITIVES & INKS 2023 REVENUE | $1 .1 B ILL ION 52% 35% 23 6%Industrial 12% 10% Defense Building & END MARKET REGION SPECIALTY ENGINEERED MATERIALS 32% 26% Building & 6% 2% Defense 1% (18% of sales) 2023 AVIENT REGIONAL SALES 25% Building & (36% of sales)Transportation 22% Building & 12% 6% US & Canada (41% of sales) 59% 22% Building & LATAM (5% of sales) 24 BY END MARKET 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.