行为准则》 | 16 http://《全球隐私与数据保护政策》 http://《全球隐私与数据保护政策》 社交媒体和社交网络 Avient 认为社交媒体和社交网络可能对专业有价值。 行为准则》 | 27 http://Avient.com/sustainability http://Avient.com/sustainability https://www.avient.com/company/sustainability/sustainability-report https://www.avient.com/company/sustainability/sustainability-report/products/no-surprises-pledge-0 https://www.avient.com/company/sustainability/sustainability-report/products/no-surprises-pledge-0 问：我的主管要求我遵从一个全新的废物处置程序，但 是我不确定那个程序是否安全或合法。 行为准则》 | 30 http://avient.ethicspoint.com http:// avient.ethicspoint.com http://avient.ethicspoint.com 北美 全球总部，美国 Avon Lake 33587 Walker Road Avon Lake, OH, United States 44012 免费电话：+1 866 765 9663 电话：+1 440 930 1000 传真：+1 440 930 3064 亚太地区 地区总部，中国上海 金苏路 200 号 C 幢 2 楼 中国上海浦东，邮编 201206 电话：+86 (0) 21 6028 4888 传真：+86 (0) 21 6028 4999 南美 地区总部，巴西圣保罗 Av.

行為準則》 | 17 http://polynet/ethics/CorporatePolicies/InformationSystemsUsePolicies/tabid/1885/Default.aspx http://polynet/ethics/CorporatePolicies/CyberandDataIncidentResponsePolicy/tabid/2729/Default.aspx 內線消息與交易 您可能會在 Avient 發現與 Avient 或我們與之有業務往來的任 何公司有關的、尚未向公眾披露的重大資訊。 行為準則》 | 21 https://www.avient.com/company/policies-and-governance/global-policy-anti-bribery-and-anti-corruption https://www.avient.com/company/policies-and-governance/global-policy-anti-bribery-and-anti-corruption 代理商與顧問 我們必須確保代理商、顧問與其他代表 Avient 行事的代表不會 提供或收受賄賂或回扣，也不會從事任何其他非法或不道德的行 為。 行為準則》 | 27 https://www.avient.com/company/sustainability/sustainability-report http://Avient.com/sustainability https://www.avient.com/company/sustainability/sustainability-report/products/no-surprises-pledge-0 https://www.avient.com/company/sustainability/sustainability-report/products/no-surprises-pledge-0 問：我的主管要求我遵循新的廢棄物處理程序，但我不 確定該程序是否安全或合法。

subject= http://Avient.com Inga repressalier Avient kommer inte att acceptera några repressalier mot någon person som i god tro ber om råd för ett problem på tal, rapporterar felaktigt uppförande eller lämnar information i en utredning i samband med en misstänkt överträdelse av uppförandekoden. UPPFÖRANDEKOD | 27 INTEGRITET I VÅRA BOLAGETS SOCIALA https://www.avient.com/company/sustainability/sustainability-report http://Avient.com/sustainability https://www.avient.com/company/sustainability/sustainability-report/products/no-surprises-pledge-0 Fråga: Min överordnade sa åt mig att följa en ny avfallshanteringsprocedur, men jag är inte säker på att den är säker eller ens laglig. Francisco Nakasato, 1700 13295-000 Itupeva Sao Paulo, Brasilien Telefon: +55 11 4593 9200 Europa Regionalt huvudkontor Pommerloch, Luxemburg 19 Route de Bastogne Pommerloch, Luxemburg, L-9638 Telefon: +352 269 050 35 Fax: +352 269 050 45 www.avient.com http://www.avient.com Bekräftelse om efterlevnad av avients uppförandekod Instruktioner: Läs, underteckna och återsänd detta dokument till personalavdelningen.

CÓDIGO DE CONDUCTA | 14 NUESTRO CÓDIGO HONESTIDAD EN INTEGRIDAD EN RESPONSABILIDAD https://www.avient.com/company/policies-and-governance/it-systems-use-policy https://www.avient.com/company/policies-and-governance/it-systems-use-policy Información de propiedad exclusiva y confidencial, ideas y propiedad intelectual Nuestra ventaja competitiva puede disminuir fácilmente si otros obtienen acceso a la información de propiedad exclusiva, las ideas innovadoras o la propiedad intelectual de Avient, y las usan para desarrollar productos competidores o para ganar posiciones con nuestros clientes. CÓDIGO DE CONDUCTA | 17 NUESTRO CÓDIGO HONESTIDAD EN INTEGRIDAD EN RESPONSABILIDAD http://polynet/ethics/CorporatePolicies/InformationSystemsUsePolicies/tabid/1885/Default.aspx http://polynet/ethics/CorporatePolicies/InformationSystemsUsePolicies/tabid/1885/Default.aspx Información privilegiada y tráfico de información En Avient, es posible que esté al tanto de información sustancial relacionada con Avient o con alguna empresa con la que hacemos negocios que no se haya divulgado al público. subject= http://Avient.com/sustainability mailto:https://www.avient.com/company/sustainability/sustainability-report/products/no-surprises-pledge-0?

Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to:  The time required to consummate the divestiture of our resin assets and the satisfaction or waiver of conditions in the sale agreement;  Any material adverse changes in the business supporting the resin assets being sold;  The ability to obtain required regulatory or other third-party approvals and consents and otherwise consummate the proposed divestiture  Our ability to achieve the strategic and other objectives relating to the acquisition of Spartech Corporation, including any expected synergies; our ability to successfully integrate Spartech and achieve the expected results of the acquisition, 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 financial condition of our customers, including the ability of customers (especially those that may be highly leveraged and those with inadequate liquidity) to maintain their credit availability;  The speed and extent of an economic recovery, including the recovery of the housing market;  Our ability to achieve new business gains;  The amount and timing of repurchases, if any, of PolyOne common shares and our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends;  The effect on foreign operations of currency fluctuations, tariffs, and other political, economic and regulatory risks;  Changes in polymer consumption growth rates in the markets 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 achieve or delays in achieving or achievement of less than the anticipated financial benefit from initiatives related to working capital reductions, cost reductions, employee productivity goals, and an inability to raise or sustain prices for products or services;  An inability to maintain appropriate relations with unions and employees; 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. • The above list of factors is not exhaustive. • We undertake no obligation to publicly update forward-looking statements, whether as a result of new information, future events or otherwise.

Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to:  The time required to consummate the divestiture of our resin assets and the satisfaction or waiver of conditions in the sale agreement;  Any material adverse changes in the business supporting the resin assets being sold;  The ability to obtain required regulatory or other third-party approvals and consents and otherwise consummate the proposed divestiture  Our ability to achieve the strategic and other objectives relating to the acquisition of Spartech Corporation, including any expected synergies; our ability to successfully integrate Spartech and achieve the expected results of the acquisition, 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 financial condition of our customers, including the ability of customers (especially those that may be highly leveraged and those with inadequate liquidity) to maintain their credit availability;  The speed and extent of an economic recovery, including the recovery of the housing market;  Our ability to achieve new business gains;  The amount and timing of repurchases, if any, of PolyOne common shares and our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends;  The effect on foreign operations of currency fluctuations, tariffs, and other political, economic and regulatory risks;  Changes in polymer consumption growth rates in the markets 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 achieve or delays in achieving or achievement of less than the anticipated financial benefit from initiatives related to working capital reductions, cost reductions, employee productivity goals, and an inability to raise or sustain prices for products or services;  An inability to maintain appropriate relations with unions and employees; 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. • The above list of factors is not exhaustive. • We undertake no obligation to publicly update forward-looking statements, whether as a result of new information, future events or otherwise.

Our formulation expertise supports material science decisions, while our processing expertise guides customers to use the materials properly.

Our formulation expertise supports material science decisions, while our processing expertise guides customers to use the materials properly.

Focused on sustainable growth platforms, we support you with: • Twin-screw compounding, drum tumbler mixing, injection molding and compression molding • Full physical, analytical, weathering and burn testing capabilities designed to shorten the time to market for new products and applications • State-of-the-art innovation centers complete with customer meeting space for real time analysis and collaboration Our global experience in developing filled or fiber reinforced formulations provides unmatched value for you!

& Canada 64% Specialty Engineered Materials Color Additives and Inks 41% 23% 19% 10% 5% 4% Building & Energy Telecom Geography Segment Industry 2024 Financial Guidance $515 to $540 million Adjusted EBITDA $2.55 to $2.70 Adjusted EPS 4 Industry Sustainability Standards ESG Ratings Performance 1 4 87th 94th percentile Avient CDP Score: A- SUSTAINABILITY PERFORMANCE AND RECOGNITION AU G U S T 6 , 20 24 W EB CAS T P RE SE N TATI O N 6 Q2 2024 HIGHLIGHTS • 5% organic sales growth supported by broad-based growth across all regions in both CAI and SEM segments • Growth stemmed from gaining share, winning new product specifications and restocking in certain end markets • Cost control and operational discipline expanded EBITDA margins by 100 bps • EPS exceeded guidance by $0.05 and increased 21% vs the prior year Adj.