Bourg-en-Bresse - 22/12/2021 - 10:38:15 page 1/2 Extrait Kbis EXTRAIT D'IMMATRICULATION PRINCIPALE AU REGISTRE DU COMMERCE ET DES SOCIETES à jour au 21 décembre 2021 Code de vérification : iWCDBNXrir https://www.infogreffe.fr/controle IDENTIFICATION DE LA PERSONNE MORALE Immatriculation au RCS, numéro 842 455 487 R.C.S.

Upon approval of the final CMF concept, the product code is issued, and a production location for the masterbatch is determined.

GLOBAL REGULATORY COMPLIANCE Our regional tech centers around the world offer regulatory support and product stewardship expertise to help you qualify your products BIO-COMPATIBILITY APPLICATIONS Bio-compatible additives and colorants, tested under USP Class VI and ISO 10993, allow your materials to achieve required functional performance while meeting brand and color standards STERILIZATION REQUIREMENTS A standard color range and deliberate formulations provide stability under harsh sterilization methods AUTHENTICATION TECHNOLOGY Protect your brands with our Percept™ anti-counterfeit, security and tracking taggant technologies, or utilize radiopacifiers for placement protection LASER MARKING SOLUTIONS Optimized for color and contrast without diminishing physical property characteristics for branding, inventory management, data coding, or universal device identification PRODUCT & PROCESS OPTIMIZATION Maximize production throughput or eliminate waste with solutions including dimensional stabilization, cycle time reducers, chemical foaming agents, nucleation or hybrid technology ONCOLOR™ HC Colorants designed to be healthcare-friendly.

ColorMatrix™ Ultimate™ UV390 ColorMatrix™ Ultimate™ UV390R UV Protection Up to 390 nm Up to 390 nm User Convertor Convertor Color Colorless Colorless Recycling Accreditation EPBP APR EPBP* APR* Lightweighting ✘ ✔ Productivity Saving ✘ ✔ * Individual components are EPBP approved Product Type CC Code EU FDA Mercosur China ColorMatrix™ Ultimate™ UV 390 CC01055275 • • • • ColorMatrixw Ultimate™ UV 390R CC10348919 • • • – Food contact uses are subject to regulatory limitations and use conditions COLORMATRIX™ ULTIMATE™ UV TECHNICAL AND REGULATORY INFORMATION

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Phone: 216-255-3406 Fax: 216-255-3456 4199 Kinross Lakes Parkway, Suite 220 Richfield, OH 44286 SIC/NAICS Codes & Descriptions 3087 / 325991 Customer compounding of purchased resins 2821 / 325211 Plastic material and resin manufacturing 2851 / 325510 Paint & Coating manufacturing (Specialty Coatings) 424610 Plastic materials wholesalers (Avient Distribution) 326199 Composites (Glasforms) Avient Code of Conduct Policy Yes. Yes; inquiries can be sent to regulatoryservices@polyone.com For Avient Distribution Inquiries: PODQuality@polyone.com For ColorMatrix EMEA: regulatory.CMEU@polyone.com If products are regulated by FDA, can a letter be provided that the product meets Code of Federal Regulations requirements for the intended use? Yes, materials contain a finished good code, Lot Number, and batch number Does Avient have controlled and monitored finished good storage conditions to ensure packaging is able to withstand environmental extremes and materials are not damaged or deteriorated?

Buyer acknowledges that Seller has furnished to Buyer Safety Data Sheets, which include warnings together with safety and health information concerning the Product and/or the containers for such Product. Buyer shall disseminate such information so as to give warning of possible hazards to persons whom Buyer can reasonably foresee may receive exposure to such hazards, including, but not limited to, Buyer’s employees, agents, contractors and customers. HAFTUNGSBESCHRÄNKUNG 4.1 Unlimited Liability 4.1 Unbeschränkte Haftung (A) in the event of wilful misconduct or gross negligence, (A) im Falle von Vorsatz oder grober Fahrlässigkeit, (B) within the scope of a guarantee expressly made by Seller in writing, (B) im Rahmen einer vom Verkäufer ausdrücklich und schriftlich abgegebenen Garantie, (C) in the event that a defect is maliciously concealed, (C) für den Fall, dass ein Mangel arglistig verschwiegen wurde, (D) in case of an injury to life, body or health, and (D) im Falle einer Verletzung von Leben, Körper oder Gesundheit und (E) claims under Section 1 para. 1 of the German Product Liability Act; whereby the liability of Seller for compensation claims among jointly-and-severally liable debtors pursuant to Sections 421 to 425 German Civil Code shall be excluded.

CORPORATE GOVERNANCE 30 PROXY STATEMENT 2024 | Annual Meeting of Shareholders CODE OF ETHICS, CODE OF CONDUCT AND CORPORATE GOVERNANCE GUIDELINES In accordance with applicable NYSE listing standards and SEC regulations, the Board has adopted a Code of Ethics, Code of Conduct and Corporate Governance Guidelines. Deferrals under Internal Revenue Code tax-qualified plans, such as a 401(k) plan, do not affect our current tax deduction. The Avient Supplemental Retirement Benefit Plan is also subject to the rules of Code Section 409A, which restricts the timing of distributions.

POLYMER PRODUCT NAME PROPERTY PERFORMANCE TYPE DOSAGE/ LDR MATERIAL CODE ABS FRABS92991 UL 94 Halogen 35% CC10292991WE ABS FRABS52399 UL 94 Halogen 5–14% CC10252399WE HDPE Cesa Flam MB 5101AH UL 94 Halogen 7–16% PEAN698479 Nylon Cesa Flam MB 5728H UL 94 Halogen 8–14% ABA0698450 Nylon Cesa Flam MB 5731NH UL 94 Non-halogen 8–20% ABAN698410 PC Cesa Flam NCA0820018NH UL 94 Non-halogen 2–4% NCA0820018 PC NCAN-Z0N-FN FLMRET 698419 UL 94 Non-halogen 3–8% NCAN698419 PE FRPE94802 ASTM E84 Non-halogen 100% CC103094802F PE FRPE41011 UL 94 Halogen 20–30% CC1034101160 PET Cesa Flam MB 5525NH UL 1441, UL 94 Non-halogen 6–8% NEAN698534 PET FRPET65462 UL 94 Non-halogen 5–12% CC103265462F PET/ PBT Cesa Flam MB 5532NH NFPA 701 Non-halogen 4–6% NBAN698451 PP Cesa Flam MB 5201H UL 94 Halogen 6–30% PPAN698410 PP Cesa Flam MB CT-1629NH Cal TB 133, UL 94 Film, NFPA 701 Non-halogen 6–8% PPAN698428 PP FRPP365370 UL 94 Non-halogen 10–20% CC103653702F PP Copolymer FRPP37654 UL 94 5VA Halogen 100% CC10337654WE PP Copolymer FRPP53484 UL 94 Halogen 10% CC1035348460 PS FRPS62722 ASTM E84 Halogen 2–4% CC10262722WE PS/HIPS Cesa Flam SLA0820014H UL 94 Halogen 4–8% SLA0820014H TPU Cesa Flam 98461NH UL 94 Non-halogen 6–14% RUA0698461 F-SERIES FLAME RETARDANT ADDITIVES HDPE/PE F-Series UL 94 Non-halogen 10–25% PEA0820024 PE F-Series UL 2335, FM 4998 Non-halogen 10–25% PEA0820069

KEY CHARACTERISTICS • Manufactured under change control principles beyond CAS number (similar level as MEVOPUR concentrates), reducing risk of change • Free from animal-derived substances and phthalates • Suitable for blown film, injection molding, blow molding and extrusion REGULATORY SUPPORT • Raw materials tested to: - ISO 10993-1 - USP chapters , including Class VI, a requirement for ophthalmic and nasal drugs - European Pharmacopeia 3.1.3/3.1.5 (polyolefin) - USP (polyethylene) - ICH Q3D elemental impurities - USP and USP light transmission • Registered Drug Master File (Type III) • Food contact compliance established with FDA/EU* APPLICATION BULLETIN CARRIER MATERIAL PIGMENT CONTENT/TYPE LIGHT FASTNESS THERMAL STABILITY PRODUCT CODE HDPE 50% TiO2 8 300°C PH00075525 LLDPE 60% TiO2 8 300°C PL00075542 LLDPE 70% TiO2 8 300°C PL00075545 PP 50% TiO2 8 300°C PP00075717 Healthcare use limitations apply—see below.