AT 20-19 1 Avis Technique – Tri Détectabilité et tri de la solution colorante AVIENT CORPORATION / CESA® IR PP 94000725 dans les centres de tri D E S C R IP TI O N D E L A D E M A N D E GENERALITES Demandeur Avient Corporation Date de la demande 2020 Référence de la solution colorante CESA® IR PP 94000725 Limite max de concentration de la solution colorante 4% DESCRIPTION DE LA SOLUTION COLORANTE Couleur Noire Solution colorante adaptée pour : Emballages rigides en PP OBJET DE LA DEMANDE Etude de la détectabilité dans les centres de tri français de la solution colorante noire CESA® IR PP 94000725 proposée par Avient Corporation et utilisée pour colorer des emballages rigides en PP. CONCLUSIONS TECHNIQUES Compte tenu des éléments transmis au COTREP, et au vu des résultats présents dans les rapports de tests des Fabricants d’équipement de Tri Optique (T.O.), la solution colorante noire CESA® IR PP 94000725 de Avient Corporation utilisée pour colorer des emballages rigides en PP est détectable par tri optique dans des conditions représentatives des technologies utilisées dans les centres de tri d’emballages ménagers français. La solution colorante noire CESA® IR PP 94000725 de Avient Corporation utilisée pour colorer des emballages rigides en PP est une alternative aux solutions colorantes non détectables.

AT 20-18 1 Avis Technique – Tri Détectabilité et tri de la solution colorante AVIENT CORPORATION / CESA® IR PE 94000816 dans les centres de tri D E S C R IP TI O N D E L A D E M A N D E GENERALITES Demandeur Avient Corporation Date de la demande 2020 Référence de la solution colorante CESA® IR PE 94000816 Limite max de concentration de la solution colorante 4% DESCRIPTION DE LA SOLUTION COLORANTE Couleur Noire Solution colorante adaptée pour : Emballages rigides en PE OBJET DE LA DEMANDE Etude de la détectabilité dans les centres de tri français de la solution colorante noire CESA® IR PE 94000816 proposée par Avient Corporation et utilisée pour colorer des emballages rigides en PE. CONCLUSIONS TECHNIQUES Compte tenu des éléments transmis au COTREP, et au vu des résultats présents dans les rapports de tests des Fabricants d’équipement de Tri Optique (T.O.), la solution colorante noire CESA® IR PE 94000816 de Avient Corporation utilisée pour colorer des emballages rigides en PE est détectable par tri optique dans des conditions représentatives des technologies utilisées dans les centres de tri d’emballages ménagers français. La solution colorante noire CESA® IR PE 94000816 de Avient Corporation utilisée pour colorer des emballages rigides en PE est une alternative aux solutions colorantes non détectables.

AT 20-17 1 Avis Technique – Tri Détectabilité et tri de la solution colorante AVIENT CORPORATION / CESA® IR PE 94000828 les centres de tri D E S C R IP TI O N D E L A D E M A N D E GENERALITES Demandeur Avient Corporation Date de la demande 2020 Référence de la solution colorante CESA® IR PE 94000828 Limite max de concentration de la solution colorante 4% DESCRIPTION DE LA SOLUTION COLORANTE Couleur Noire Solution colorante adaptée pour : Emballages rigides en PE OBJET DE LA DEMANDE Etude de la détectabilité dans les centres de tri français de la solution colorante CESA® IR PE 94000828 proposée par Avient Corporation et utilisée pour colorer des emballages rigides en PE. CONCLUSIONS TECHNIQUES Compte tenu des éléments transmis au COTREP, et au vu des résultats présents dans les rapports de tests des Fabricants d’équipement de Tri Optique (T.O.), la solution colorante noire CESA® IR PE 94000828 de Avient Corporation utilisée pour colorer des emballages rigides en PE est détectable par tri optique dans des conditions représentatives des technologies utilisées dans les centres de tri d’emballages ménagers français. La solution colorante noire CESA® IR PE 94000828 de Avient Corporation utilisée pour colorer des emballages rigides en PE est une alternative aux solutions colorantes non détectables.

Gordon Composites laminates are available in an assortment of colors, inlay options, and lengths from 6" to 120", or rolls up to 1500 feet. PRODUCT MATERIAL DESCRIPTION COLOR MAX THICKNESS IN (MM) MAX WIDTH IN (CM) FLEXURAL MODULUS Msi (GPa) FLEXURAL STRENGTH ksi (MPa) GLASS % GC-70-UL Glass/Epoxy Any 0.1 (2.5) 17.75 (45) 5.8 (39.99) 210 (1448) 70 GC-66-ULW Glass/Epoxy, 90° Weft Any 0.1 (2.5) 17.75 (45) 4.5 (31.03) 130 (896) 66 GC-70-ULS Glass/Epoxy, 1080 Woven Scrim Any 0.1 (2.5) 17.75 (45) 5.8 (39.99) 210 (1448) 70 GC-70-ULZ Glass/Epoxy Natural 0.04 (1.0) 8.75 (22.2) 6.8 (46.89) 245 (1689) 70 GC-70-ULC Carbon/Epoxy Black 0.04 (1.0) 8.0 (20.3) 19.9 (137.21) 300 (2069) 70 http://www.polyone.com/content/product-selection-help-form BARSTOCK All barstock composites are machined to size with a surface finish prepared to fit customer requirements. STANDARD BARSTOCK PRODUCTS PRODUCT MATERIAL DESCRIPTION COLOR MAX THICKNESS IN (MM) MAX WIDTH IN (CM) FLEXURAL MODULUS Msi (GPa) FLEXURAL STRENGTH ksi (MPa) GLASS % GC-67-UB Glass/Epoxy Black 0.575 (14.6) 11.75 (29.8) 5.8 (39.99) 153 (1055) 67 GC-67-UBZ Glass/Epoxy Black 0.5 (12.7) 8.75 (22.2) 5.8 (39.99) 153 (1055) 67 GC-60-UBC Carbon/Epoxy Black 0.25 (6.35) 4.0 (10.2) 12.5 (86.19) 150 (1034) 60 GC-67-UBW Glass/Epoxy, 90° Weft Blue 0.25 (6.35) 8.75 (22.2) 4.8 (33.10) 150 (1034) 67 http://www.polyone.com/content/product-selection-help-form PULTRUDED PROFILES - TYPICAL PROPERTIES The Glasforms™ pultrusion process creates continuous, constant cross-sectional profiles with consistent, uniform quality and exceptional mechanical performance.

FL.Datasheet StrengthMembers.indd FIBER OPTICAL CABLES MOVING HIGH PERFORMANCE FIBERS FORWARD Key Features • Dielectric strength members • Sizes Available: 0.175 mm – 18.00 mm • Available Forms: Flat, Twisted, Cords, Rovings, & Jacketed • Shapes: Flat or round FIBER-LINE® FIBERS FOR STRENGTH MEMBERS • Kevlar® Para-Aramid • Vectran® Liquid Crystal Polymer (LCP) • Zylon® Polybenzyloate (PBO) • Carbon Fiber • Ultra High Molecular Weight Polyethylene (UHMWPE) • PET Polyester • Fiberglass • Nylon Polyamide • Technora® FIBER-LINE® PERFORMANCE ADDING COATINGS • FIBER-LINE® Wearcoat™: Abrasion Resistance* • FIBER-LINE® Bondcoat™: Ahdesion Promotion* • FIBER-LINE® Protexcoat™: UV Protection* • FIBER-LINE® Colorcoat™: Color Identification* • FIBER-LINE® Swellcoat®: Water Absorbing Protection* • FIBER-LINE® Swellcoat®Blocker: Block Water Migration* FIBER-LINE® PRODUCTS W/ STRENGTH MEMBERS • Strength members in cables • Steel replacement Overview FIBER-LINE® develops, produces, and markets a full line of high performance strength members. Packages can be supplied on colored, embossed and/or slit tubes. They also add important characteristics, such as SWELLCOAT® water-blocking, water repellence, adhe- sion, color, and wear and UV-resistance to these and many other applications.

VERSAFLEX™ HC MEDICAL TUBING SERIES • Improve extrusion rates, achieve high service temperature performance or increase clarity in medical tubing • Meet biopharmaceutical needs for weldability and minimize extractables during processing VERSALLOY™ HC SERIES • Obtain better flow in long, thin paths and lower shrink rates versus typical TPVs with our alloys, made with Santoprene™ TPV • Color easily and obtain a smooth tactile feel VERSAFLEX™ HC GASKETS & STOPPERS SERIES • Achieve no coring, good puncture and resealability in static stoppers • Meet low COF and low stiction requirements in dynamic seals VERSAFLEX™ CL E SERIES • Increase clarity and flexibility in bags, bottles and films • Mitigate risk with plasticizer-free formulations for film extrusion • Deliver excellent odor & O 2 barrier performance for film extrusion INDUSTRY BULLETIN TPE HEALTHCARE PRODUCT SELECTOR GUIDE Versaflex™ HC MT Series Versaflex™ HC MT222 Clear 66A 0.88 14 - 334 2.30 629 4.34 898 6.19 430 220 36 ✔ ✔ High clarity, without plasticizers Versaflex™ HC MT224 Clear 75A 0.89 19 - 468 3.23 773 5.33 1360 9.40 530 321 56 ✔ ✔ Versaflex™ HC MT226 Clear 84A 0.88 20 - 606 4.17 885 6.10 1600 11.00 600 433 76 ✔ ✔ Versaflex™ HC MT317 Clear 68A 0.89 17 69 450 3.10 660 4.55 870 6.00 470 221 39 ✔ ✔ Very high service temperature Versaflex™ HC BT218 Natural 67A 0.89 19 69 381 2.60 683 4.70 1186 8.20 608 - - ✔ ✔ Weldable, kink resistant Versaflex™ HC Gaskets & Stoppers Series Versaflex™ HC 2110-35N Natural 34A 0.90 19 47 145 1.00 261 1.80 400 2.76 620 97 17 ✔ ✔ Good resealing Versaflex™ HC 2110-43N Natural 43A 0.98 12 46 134 0.92 368 2.54 723 4.98 710 - - ✔ ✔ Good compression set Versaflex™ HC 2110-57B Black 59A 1.01 20 37 369 2.54 558 3.85 537 3.70 350 147 26 ✔ ✔ Low stiction Versaflex™ CL E Series Versaflex™ CL E85 Clear 84A 0.90 20 72 752 5.18 1160 8.00 1550 10.70 450 433 76 ✔ ✔ High clarity, without plasticizers; E95 also offers excellent odor & O 2 barrier Versaflex™ CL E90 Clear 90A 0.90 27 73 1000 6.89 1230 8.50 1830 12.60 57 - - ✔ ✔ Versaflex™ CL E95 Clear 95A 0.90 38 71 1680 11.60 1730 11.90 2500 17.20 580 720 126 ✔ ✔ Versaflex™ HC 3810 Series Versaflex™ HC 3810-20N Natural 20A 0.88 16 54 123 0.80 185 1.30 342 2.40 650 - - ✔ - Formulated without animal derivatives, excellent colorability, translucent Versaflex™ HC 3810-30N Natural 30A 0.89 18 58 170 1.20 245 1.70 459 3.20 680 - - ✔ - Versaflex™ HC 3810-40N Natural 40A 0.88 19 59 191 1.30 275 1.90 506 3.50 670 - - ✔ - Versaflex™ HC 3810-50N Natural 50A 0.89 21 61 264 1.80 366 2.50 699 4.80 690 - - ✔ - Versaflex™ HC 3810-60N Natural 60A 0.88 24 65 459 3.20 594 4.10 790 5.40 510 - - ✔ - Versaflex™ HC 3810-70N Natural 70A 0.88 28 67 535 3.70 684 4.70 1000 6.90 570 - - ✔ - Versaflex™ HC 3810-80N Natural 80A 0.88 30 67 689 4.80 869 6.00 1390 9.60 620 - - ✔ - Versaflex™ HC 3810-90N Natural 90A 0.88 27 89 1087 7.50 1350 9.30 1890 13.00 570 - - ✔ - Versalloy™ HC 9210 Series Versalloy™ HC 9210-45N Natural 45A 0.89 19 39 160 1.10 320 2.20 484 3.33 480 100 18 - ✔ Smooth surface aesthetics Versalloy™ HC 9210-55N Natural 53A 0.89 20 44 208 1.44 335 2.31 580 4.00 610 120 21 - ✔ Versalloy™ HC 9210-70N Natural 70A 0.89 23 53 356 2.45 510 3.52 780 5.38 590 180 32 - ✔ Versalloy™ HC 9220 Series Versalloy™ HC 9220-70 Natural 70A 0.95 17 51 453 3.12 - - 643 4.43 265 208 36 ✔ ✔ ExtrudableVersalloy™ HC 9220-80 Natural 80A 0.94 18 59 553 3.67 777 5.36 945 6.52 415 208 36 ✔ ✔ Versalloy™ HC 9220-90 Natural 90A 0.94 25 55 1030 8.13 1350 9.33 1945 13.45 620 400 70 ✔ ✔ Standard Healthcare Grades Versaflex™ G2705N Natural 60A 0.88 - - - - 528 3.64 670 4.62 470 - - ✔ ✔ Natural, high strength Versaflex™ CL 2242 Clear 43A 0.89 23 - 152 1.05 294 2.02 731 5.00 780 124 22 ✔ ✔ High clarity, boilable Versaflex™ CL 2250 Clear 50A 0.89 20 - 220 1.52 337 2.32 827 5.70 770 140 25 ✔ ✔ Versaflex™ OM Series Versaflex™ OM 1040X Natural 42A 0.92 22 - 180 1.24 301 2.08 504 3.47 580 100 18 ✔ ✔ ABS/PC overmoldVersaflex™ OM 3060 Clear 59A 0.90 33 - 420 2.90 360 2.48 500 3.45 480 180 32 ✔ ✔ Color Hardness Specific Gravity Compression Set @ 23°C Compression Set @ 100°C 100% Modulus 300% Modulus Tensile Strength Elongation Tear Strength ISO 10993 USP VI Special Characteristics ASTM Shore A ASTM/ISO ASTM % ASTM % ASTM psi Mpa ASTM psi Mpa ASTM psi ISO Mpa ASTM % ASTM pll ISO kN/m GENERAL PROPERTIES TENSILE PROPERTIES OTHER For further information on specific grades, review technical data sheets.

Avient acquired the Clariant Color business on July 1, 2020 (the “Acquisition Date”). To provide comparable financial results, the Company references “pro forma” financial metrics, which include the business results of Clariant Color for periods prior to the Acquisition Date. Financials are pro forma for the acquisition of Dyneema® and potential divestiture of Distribution Avient Specialty Formulators Other Specialty / Chemical Companies 45 Source: Peer data per Bloomberg market data as of April 21, 2022 Total Enterprise Value / NTM EBITDA With the Dyneema and Clariant Color business acquisition and divestment of the PP&S business, along with the proposed sale of our Distribution business, our exposure is now concentrated in less-cyclical and high-growth markets.

& Canada EMEA Asia Latin America 64% 36% Specialty Engineered Materials Color Additives and Inks 41% 36% 18% 5% 7% 7% 23% 19% 9% 16% 10% 5% 4% Defense Healthcare Packaging Consumer Building & Construction Industrial Transportation Energy Telecom Geography Segment Industry 4 CRE AT ING A WORL D-CL AS S S US TAINABL E ORGANIZ AT ION 1. 6% annualized long term sales growth leveraging sustainable solutions, composites, healthcare and emerging regions 2. PY ( T O TA L C O M PA N Y ) $790 $719 2022 2023 $107 $114 2022 2023 Sales Adjusted EBITDA (in millions) $0.42 $0.52 2022 2023 Adjusted EPS (in millions) - 9% + 7% + 24% Sales Adjusted EBITDA Adjusted EPS 15 Q4 2023 SEGMENT PERFORMANCE 16 CAI $491 $459 Sales (in millions) $70 $84 EBITDA SEM $301 $260 Sales $55 $49 EBITDA - 7% - 14%+20% - 11% 2022 2023 (in millions) Q4 EBITDA BRIDGE ( T O TA L C O M PA N Y ) 17 $ millions CAI: Price / Mix 11 Deflation 14 SEM: Price / Mix 4 Deflation 9 Net Price Benefit 38 Cost Reductions 13 Wage Inflation (8) Other (2) Q4 2023 $114 Adjusted EBITDA Q4 2022 $ 107 Demand (34) • Demand was down, but less than in previous quarters, due to slowing pace of destocking • Positive net price benefit: o CAI – Pricing flat with favorable mix from uptick in packaging and consumer end markets and raw material deflation o SEM - Pricing flat with favorable mix from Composites and raw material deflation • Cost reductions primarily driven by reduced administrative costs and cost synergies 2 0 2 4 G U I D A N C E 2024 GUIDANCE Full Year 2024 Guidance Adjusted EBITDA $505 to $535 million Adjusted EPS $2.40 to $2.65 Interest Expense $105 to $110 million Adjusted Effective Tax Rate 23% to 25% Capital Expenditures ~$140 million 19 Q1 Adjusted EPS of $0.68 A P P E N D I X 21 Performance Additives 15% Pigments 13% TiO2 9% Dyestuffs 2% Polyethylene 10%Nylon 5% Polypropylene 4% Styrenic Block Copolymer 4% Other Raw Materials 38% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials RA W MATERIAL BASKET SEGMENT DATA U.S. & Canada 41% EMEA 36% Asia 18% Latin America 5% 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS Consumer 19% Packaging 23%Industrial 16% Building and Construction 9% Telecommunications 4% Energy 5% Defense 7% END MARKET REVENUE $2,007M $358M $1,138M $224M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $502M$3,143M (1) Transportation 10% Healthcare 7% 23 (1) Total company sales and adjusted EBITDA of $3,143M and $502M, respectively, include intercompany sales eliminations and corporate costs 2 0 2 3 R E V E N U E | $ 2 . 0 B I L L I O N US & Canada 34% EMEA 37% Asia 21% Latin America 8% END MARKET REGION 24 Packaging 34% Consumer 21% Healthcare 8% Industrial 15% Transportation 9% Building & Construction 10% Telecommunications 1% Energy 2% COLOR, ADDITIVES & INKS 2 0 2 3 R E V E N U E | $ 1 . 1 B I L L I O N US & Canada 52% EMEA 35% Asia 13% 25 Packaging 5% Consumer 16% Healthcare 6%Industrial 16% Transportation 12% Telecommunications 9% Energy 10% Defense 18% Building & Construction 8% END MARKET REGION SPECIALTY ENGINEERED MATERIALS Packaging 32% Consumer 26% Healthcare 9% Industrial 13% Building & Construction 6% Telecommunications 2% Energy 2% Defense 1% Asia (18% of sales) Transportation 9% 2 0 2 3 AV I E N T R E G I O N A L S A L E S Packaging 25% Consumer 13% Healthcare 5% Industrial 18% Building & Construction 9% Energy 5% Defense 8% EMEA (36% of sales)Transportation 13% Packaging 13% Consumer 22% Healthcare 10% Industrial 16% Building & Construction 12% Energy 6% Defense 8% US & Canada (41% of sales) Transportation 9% Packaging 59% Consumer 22% Healthcare 2% Industrial 8% Building & Construction 4% LATAM (5% of sales) Transportation 5% Telecommunications 4% Telecommunications 4% 26 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. Free Cash Flow Calculation December 31, 2023 Cash provided by operating activities $ 201.6 Taxes paid on gain on sale of business 104.1 Adjusted cash provided by operating activities $ 305.7 Capital expenditures $ (119.4) Free cash flow $ 186.3 2 Three Months Ended December 31, Year Ended December 31, 2023 2022 2023 2022 Sales: Color, Additives and Inks $ 459.4 $ 490.8 $ 2,007.4 $ 2,355.0 Specialty Engineered Materials 259.8 300.8 1,138.2 1,044.4 Corporate (0.2) (1.2) (2.8) (2.5) Sales $ 719.0 $ 790.4 $ 3,142.8 $ 3,396.9 Operating income: Color, Additives and Inks $ 61.8 $ 44.3 $ 259.9 $ 301.0 Specialty Engineered Materials 29.4 35.2 142.5 140.1 Corporate (48.1) (79.1) (205.6) (197.8) Operating income $ 43.1 $ 0.4 $ 196.8 $ 243.3 Other expense, net: $ 4.3 $ (28.4) $ 5.8 $ (59.7) Depreciation & amortization: Color, Additives and Inks $ 22.2 $ 25.2 $ 98.3 $ 101.3 Specialty Engineered Materials 19.8 20.3 81.5 48.7 Corporate 2.2 3.1 9.0 12.5 Depreciation & amortization $ 44.2 $ 48.6 $ 188.8 $ 162.5 Earnings before interest, taxes, depreciation and amortization (EBITDA): Color, Additives and Inks $ 84.0 $ 69.5 $ 358.2 $ 402.3 Specialty Engineered Materials 49.2 55.5 224.0 188.8 Corporate (45.9) (76.0) (196.6) (185.3) Other expense, net $ 4.3 $ (28.4) $ 5.8 $ (59.7) EBITDA $ 91.6 $ 20.6 $ 391.4 $ 346.1 Special items in EBITDA 22.3 86.8 110.4 162.5 EBITDA - excluding special items $ 113.9 $ 107.4 $ 501.8 $ 508.6 APM pro forma adjustments - 8 months 2022* — — — 83.1 Pro forma EBITDA $ 113.9 $ 107.4 $ 501.8 $ 591.7 * Pro forma adjustment for January - August 2022 APM results (period before Avient ownership). 3 AVNT February IR Presentation_w_Non-GAAP Recs.pdf AVNT February IR Presentation.pdf Avient corporation�investor presentation DISCLAIMER Slide Number 3 Creating a world-class�sustainable organization Top-tier sustainability performance�and recognition Slide Number 6 Slide Number 7 Portfolio transformation Slide Number 9 END MARKET observations�(% of company sales) Regional observations�(% of company sales) Slide Number 12 Slide Number 13 Slide Number 14 Slide Number 15 Slide Number 16 Slide Number 17 Slide Number 18 Slide Number 19 Slide Number 20 Slide Number 21 Slide Number 22 2023 segment, end market and Geography Color, Additives & Inks Specialty Engineered Materials Slide Number 26 AVNT Q4 2023 Earnings Presentation.pdf AVNT Q4 2023 Earnings Presentation_For Website_with Non-GAAP.pdf IR Deck - AVNT-2023.12.31 (2.12.24 9PM Milestone February 12 0905 pm).pdf Attachment 3.26.24 - Public Lender Presentation Non-GAAP Attachments (005).pdf

Cesa Stat Antistatic Additives can be combined with other additives or colorants in a single Smartbatch™ concentrate for processing efficiency and ease. PRODUCT BULLETIN KEY CHARACTERISTICS • Eliminates electric charges to maintain good product appearance • Creates safer, static-dissipated parts for electronics, packaging, automotive, and military applications • Improves product appeal by reducing static charge-related dust accumulation • Reduces the risk of a potential fire hazard in product environments • Reduces cycle times, maximizes throughput, and lowers operating costs • Can be combined with other additives or colorants into a single masterbatch • Compatible with a variety of processes including blow molding, injection molding, extrusion, and film processing • FDA-approved and bio-based formulations available MARKETS AND APPLICATIONS Cesa Stat Antistatic Additives are suitable for any thermoplastic application that could benefit from reduced static buildup, including: • Automotive under-the-hood components • Automotive dashboards • Electrical connectors & components • Electronic components • Military components • Consumer packaging ARE YOU IN A BATTLE WITH STATIC?

Available in natural and black grades, this Edgetek PKE GF series can be colored at the press. Some formulations are also available pre-colored.