The company noted that fourth quarter 2023 GAAP EPS includes $0.06 of special items (see Attachment 3) and $0.16 of intangible amortization expense (see Attachment 1). See Attachment 3 for a definition and summary of special items. NEWS RELEASE Attachment 1

1 3 4

1 3 4

Aktualizováno: únor 2021 Globální antimonopolní zásady společnosti Avient Obsah Přehled zásad 1 Een Overzicht van de Amerikaanse Přehled antimonopolních zákonů USA 1 Porušení antimonopolních zákonů 3 Oblasti potenciálně dotčené antimonopolní problematikou 3 Závěr 5 Hlášení možných porušení 6 Horká linka pro etiku společnosti Avient 6 Ochrana před odvetou 6 Antimonopolní kontrolní seznam 7 Rychlé rady: Antimonopolní zásady CO DĚLAT a CO NEDĚLAT 9 Návod k dodržování předpisů Společnost Avient se zavázala podporovat spravedlivou hospodářskou soutěž a svobodné podnikání na trhu. Vyhněte se i pouhému zdání takové dohody a vyhněte se situacím, kdy by takové dohody mohly nastat. 3. Nesnažte se žádným způsobem získat přímo od konkurentů informace (zejména o cenách). 4.

Потенциальные проблемные области в сфере антимонопольного законодательства 1. По этой причине избегайте ненужных контактов с конкурентами. 3. Запрещается иным образом получать информацию (в частности, о цене) непосредственно от конкурентов. 4.

تاريخ التحديث: فبراير 2021 سياسة Avient العالمية بشأن مكافحة الاحتكار المحتويات 1 دليل الامتثال 1 نظرة عامة على السياسة 2 نظرة عامة على قوانين مكافحة الاحتكار الأمريكية 3 انتهاكات قانون مكافحة الاحتكار 3 الجوانب المثيرة للمخاوف المحتملة فيما يتعلق بمكافحة الاحتكار 5 الخلاصة 6 الإبلاغ عن الانتهاكات المحتملة 6 Avient الخط الساخن للأخلاقيات في 7 القائمة المرجعية لمكافحة الاحتكار 9 المرجع السريع: الأوامر والنواهي فيما يتعلق بمكافحة الاحتكار دليل الامتثال تلتزم Avient بتعزيز المنافسة العادلة واقتصاد السوق الحرة. عمل أحد الأفراد كمدير أو مسؤول في شركات متنافسة. 3 يحظر قانون روبنسون - باتمان: التحريض على التمايز السعري أو المعرفة بوقوعه. 4 يحظر قانون هيئة التجارة الفيدرالية:

Potensi Bidang yang Harus Diperhatikan untuk Antimonopoli 1. Karena alasan ini, hindari kontak yang tidak perlu dengan pesaing. 3. Jangan mendapatkan informasi (khususnya informasi harga) secara langsung dari pesaing. 4.

Use of Non-GAAP Measures Page 3 -150.00% -50.00% 50.00% 150.00% 250.00% 350.00% PolyOne S&P 500 Page 4 All time high of $32.32 October 21st, 2013 • 16 consecutive quarters of double digit EPS growth • 42% CAGR adjusted EPS expansion 2006-2012 • YTD stock price has increased 56% versus 22% growth in the S&P • Six fold increase in market cap: $0.5b $3.0b Strategy and Execution Drive Results PP&S 15% Specialty 60% Distribution 25% 0.12 0.27 0.21 0.13 0.68 0.82 1.00 2.50 $0.00 $0.25 $0.50 $0.75 $1.00 $1.25 $1.50 $1.75 $2.00 $2.25 $2.50 2006 2007 2008 2009 2010* 2011* 2012* 2015 Target Ad ju st ed E ar ni ng s P er S ha re Appliance 6% Building & Construction 13% Wire & Cable Electrical & Electronics 4% Consumer Packaging 18% Industrial 10% Misc. 5% HealthCare Transportation 16% Textiles 1% United States 70% Europe 14% Canada 8% Asia 5% Latin America 3% 2012 Revenues: $4.0 Billion* End Markets* 2012 Revenues: $4.0 Billion* EPS Page 5 * Pro Forma includes FY2012 results for Spartech (11/03/12 YE) and Glasforms & excludes discontinued operations PolyOne At A Glance * Restated to exclude discontinued operations Old PolyOne Transformation *Operating Income excludes corporate charges and special items 2% 34% 43% 63% 65- 75% 0% 20% 40% 60% 80% 100% 2005 2008 2010 YTD 2013 2015 % o f O pe ra tin g In co m e* JV's PP&S Distribution Specialty Specialty OI $5M $46M $87M $153M Target Mix Shift Highlights Specialty Transformation 2015 Target Page 6 2006 YTD 2013 2015 Where we were Where we are Organic Consolidated Target 1) Operating Income % Specialty: Global Color, Additives & Inks 1.7% 12.8% 12.8% 12 – 16% Global Specialty Engineered Materials 1.1% 10.8% 8.9% 12 – 16% Designed Structures & Solutions — — 5.0% 8 – 10% Performance Products & Solutions 5.5% 8.0% 8.2% 9 – 12% Distribution 2.6% 6.1% 6 – 7.5% 2) Specialty Platform % of Operating Income 6.0% 63% 65 – 75% 3) ROIC* (after-tax) 5.0% 9.4% 15% 4) Adjusted EPS Growth N/A 28% Double Digit Expansion Proof of Performance & 2015 Goals *ROIC is defined as TTM adjusted OI divided by the sum of average debt and equity over a 5 quarter period Page 7 *Percentage of Specialty Platform revenue from products introduced in last five years 19.5% 44.0% 2006 Q3 2013 $20.3 $46.6 2006 TTM Q3'13 14.3% 31.0% 2006 Q3 2013 Research & Development Spending Specialty Platform Vitality Index Progression* Innovation Drives Earnings Growth ($ millions) Specialty Platform Gross Margin % Page 8 We are Experts in Polymer Science and Formulation  Polymer Science  Formulation  Chemistry  Processing Inputs  Base Resins  Additives  Modifiers  Colorants Specialized Polymer Materials, Services, and Solutions Expertise Satisfied Consumers PolyOne Customer Innovative Products & Services  Marketplace Demands  Performance Requirements  Value Drivers Page 9 Positioned for Strong Growth 2015 Target Rev: $5B Adj.

To listen to this recording, dial 1-855-859-2056 (domestic) or 1-404-537-3406 (international) and provide conference ID number 3293155. For the same reasons, the Company is unable to address the probable significance of the unavailable information. 4 Investor Relations Contact: Giuseppe (Joe) Di Salvo Vice President, Treasurer and Investor Relations +1 440-930-1921 giuseppe.disalvo@avient.com Media Contact: Kyle G. See Attachment 3 for a definition and summary of special items.

Attachment 1 1) Attachment 4