Year Ended December 31, Reconciliation to EBITDA and Adjusted EBITDA: 2006 2023 Sales $ 2,622.4 $ 3,142.8 Net income from continuing operations – GAAP $ 133.5 $ 76.3 Income tax expense 29.7 11.0 Interest expense, net 63.1 115.3 Depreciation and amortization from continuing operations 57.1 188.8 EBITDA from continuing operations 283.4 391.4 Special items, before tax (34.0) 114.6 Interest expense included in special items — (2.3) Depreciation and amortization included in special items — (1.9) JV - equity income (107.0) — Adjusted EBITDA $ 142.4 $ 501.8 Adjusted EBITDA as a percent of sales 5.4 % 16.0 % Avient Investor Day_Dec 2024_Wednesday morning edition.pdf Investor Day - Dec24 - Non-GAAP v4 12.03.24 545PM.pdf Attachment

Jiren Gu and Krishna Venkataswamy, “Block Copolymer Compositions for Overmolding any TPE,US patent filed , March 2004 Figure1.

Jiren Gu and Krishna Venkataswamy, “Block Copolymer Compositions for Overmolding any type of polyamide,US patent filed , March 2004 Page 4 of 11 Table 1: Material properties of 60A and 75A TPE. 60A (I) 60A (II) 75A (III) Hardness, A 60 60 75 Tensile MPa (psi) 3.54 (514) 2.75 (400) 3.36 (488) Elongation, % 450 395 280 Table 2: Universal polyamide OM with different types of polyamides and aging conditions.

As part of this guideline, all directors are required to retain 100% of all shares obtained through the Company as compensation for services provided to the Company, such percentage to be calculated after any reduction in the number of shares to be delivered as a result of any taxes and exercise costs relating to such shares.

Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: • The impact of the COVID-19 pandemic has on our business, results from operations, financial condition and liquidity; • Our ability to achieve the strategic and other objectives relating to the acquisition of Clariant’s Masterbatch business, including any expected synergies; • Our ability to successful integrate Clariant’s Masterbatch business and achieve the expected results of the acquisition of Clariant’s Masterbatch business, including, without limitation, the acquisition being accretive; • Disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; • The effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; • Changes in polymer consumption growth rates and laws and regulations regarding the disposal of plastic in jurisdictions where we conduct business; • Changes in global industry capacity or in the rate at which anticipated changes in industry capacity come online; • Fluctuations in raw material prices, quality and supply and in energy prices and supply; • Production outages or material costs associated with scheduled or unscheduled maintenance programs; • Unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; • An inability to raise or sustain prices for products or services; • An ability to achieve or delays in achieving or achievement of less than the anticipated financial benefit from initiatives related to acquisitions and integration, working capital reductions, cost reductions, and employee productivity goals; • Information systems failures and cyber attacks; and • Other factors affecting our business beyond our control, including, without limitation, changes in the general economy, changes in interest rates and changes in the rate of inflation.

In addition, at any time prior to delivery, Seller may pass through increased freight, transportation, or fuel surcharges, and/or duties, tariffs, or taxes imposed upon Seller in connection with the sale/shipment of the Product after order acceptance. Taxes, Fees, and Duties. Buyer will reimburse Seller for all national, provincial, local or other taxes (other than income taxes), excises or charges, including environmental remedial taxes and fees (if applicable), which Seller must pay in connection with the manufacture and supply of Product, but only those amounts not already included in the price at the commencement of these Terms.

U hebt toegang tot de Ethiekhotline door op onze intranetsite, The Loop, in de sectie Mensen en afdelingen, Ethiek en bedrijfsbeleid of op Avient. com, in de zoekbalk, Ethiekhotline in te voeren U kunt ervoor kiezen om uw melding online te doen of om met iemand te spreken via de telefoonnummers die voor uw land vermeld staan. Dit omvat online communicatie en sociale media. GEDRAGSCODE | 29 RESPECT VOOR EERLIJKHEID OP INTEGRITEIT IN ONS SOCIALE VERANTWOORDELIJKHEID https://www.avient.com/sites/default/files/2021-07/avient-human-rights-position-statement-updated-july-2021.pdf Interne contacten - hulpbronnen Ethiek en naleving Neem voor meer informatie over de Code of onze verwachtingen rechtstreeks contact op met de volgende hulpbronnen: • Uw supervisor of een manager van Avient • Uw vertegenwoordiger van personeelszaken of de afdeling personeelszaken • De bedrijfsfunctionaris inzake ethiek • Een lid van de juridische afdeling • De functie met de benodigde expertise (bijv. bedrijfsfinanciën, interne audit, inkoop) Bel ons op de Ethiekhotline indien: • u advies nodig heeft of een vraag heeft; • u een probleem of bezorgdheid kenbaar wilt maken; • u een probleem of bezorgdheid kenbaar heeft gemaakt en niet tevreden bent; • u niet zeker bent waar u informatie kan opvragen; • u zich niet comfortabel voelt een van de andere hulpbronnen te gebruiken die in de Code vermeld staan.

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As part of this guideline, all directors are required to retain 100% of all shares obtained through the Company as compensation for services provided to the Company, such percentage to be calculated after any reduction in the number of shares to be delivered as a result of any taxes and exercise costs relating to such shares.

n B h - - s M b L'assemblée confère tous pouvoirs à Monsieur David Vanderstraeten, Monsieur Louis Casteleyn, Monsieur Lorenz Taets et Madame Bénédicte Fanard, qui, à cet effet, élisent domicile Rue de la Régence 4 à 1000 Bruxelles, et à tout autre avocat ou paralegal du cabinet d'avocats Jones Day, chacun pouvant agir individuellement et ayant pouvoir de substitution, afin d'assurer les formalités auprès d'un guichet d'entreprise en vue d'assurer l'inscription/la modification des données dans la Banque Carrefour des Entreprises et, le cas échéant, auprès de l'Administration de la Taxe sur la Valeur Ajoutée.