Sanders By Phone: (440) 930-1318 or By E-Mail: Amy.Sanders@Avient.com Jamie Beggs By Phone: (440) 930-3574 or By E-Mail: Jamie.Beggs@Avient.com mailto:Amy.Sanders@Avient.com mailto:Jamie.Beggs@Avient.com Revised: December 20, 2024 ANNEX C The following list illustrates examples of types of information that may be considered Inside Information, if not yet available to the public: Ø Unpublished monthly, quarterly or annual financial information, statements or reports for the Company or its subsidiaries; Ø Proposed mergers, acquisitions and divestitures; Ø Proposed new security issues; Ø Liquidity or cash problems; Ø Changes in earnings, dividends or other financial information; Ø Pending patents or new products; Ø Credit history; Ø Information concerning significant changes in the business or personal lives of senior-level management; Ø The existence of and risks associated with significant threatened or pending litigation; Ø Significant regulatory proceedings and governmental investigations involving the Company; Ø Significant cybersecurity incidents involving the Company; and Ø Awareness that the Company or management’s expectations regarding Company performance differ significantly from analysts’ expectations.

-------------------------------------------------------------------------------------------------- CON FUNDAMENTO EN LA MATRÍCULA E INSCRIPCIONES EFECTUADAS EN EL REGISTRO MERCANTIL, LA CÁMARA DE COMERCIO CERTIFICA: NOMBRE, IDENTIFICACIÓN Y DOMICILIO Razón social: AVIENT COLOMBIA S.A.S Nit: 900.896.246-4 Domicilio principal: Cota (Cundinamarca) MATRÍCULA Matrícula No. 02613284 Fecha de matrícula: 10 de septiembre de 2015 Último año renovado: 2021 Fecha de renovación: 26 de marzo de 2021 Grupo NIIF: Grupo I. E) Participar en contratos públicos y licitaciones públicas o privadas, bien individualmente o con el concurso de otras personas mediante la conformación de consorcios o uniones temporales. L) La adquisición, arrendamiento, administración y enajenación de bienes muebles e inmuebles, así como Página 3 de 11 Cámara de Comercio de Bogotá Sede Virtual CERTIFICADO DE EXISTENCIA Y REPRESENTACIÓN LEGAL Fecha Expedición: 12 de abril de 2021 Hora: 13:04:47 Recibo No.

Standard and custom tapes, laminates, and panels are available in a variety of combinations of matrix resin systems including PP, PE, PETG, aPET, and PA6, and include fiber reinforcements such as E-Glass and S-Glass.

G675/SC-10 Swellcoat® E-Glass 22.7 LBs (50 KG) 1835 Ft/LB (1233 M/KG) Flat TBD ???

https://supplier.coupa.com/help/how-to-set-up-e-invoicing/ 6 In the Subtotal section, you can enter values and select tax rates for shipping, handling, and miscellaneous costs.

ENFORCEMENT AND MONITORING Authorized individuals within Avient IT may monitor or audit Information Systems use, whether company or personal, including, without limitation, Internet traffic and e-mail content, at any time and without prior notice to the User.

Attestation: Mary E.

HC_Industry bulletin_PDI_final.indd www.polymerdiagnostics.com I n d u s t r y B u l l e t i n Polymer Diagnostics Inc. PDI has extensive experience with the testing of medical devices and materials including: • Catheters • Bio-implants • Surgical diagnostic devices • Medical tubing • Other disposable medical devices Issues often arise as a result of: • Improper design or choice of material • The environment of exposure • Processing conditions World-class people and capabilities under one roof • Failure Analysis/Prevention • Qualifi cation Support • Rheology • Polymer Characterization • Deformulation • Physical Testing • Litigation Support • Characterization of polymers in pharmaceutical delivery systems • Phthalate and BPA testing 1 7 . 2 8 . 2 5 i n 8 . 5 i n 1 7 C M Y K HC_Industry bulletin_PDI_fi nal.indd REMAY 78810 TR: 16.5000" x 11.6875" and 17.000" x 11.000" Digital/IAM BL: 17.2500" x 11.9375" FINAL: 8.2500" x 11.6875" and 8.500" x 11.000" 11 .6 8 7 5 in 2 5 i n 11 .9 3 7 5 in 8 . 2 5 i n 8 . 5 i n 11 in i n Asset No. 78810 www.polymerdiagnostics.com I n d u s t r y B u l l e t i n Polymer Diagnostics Inc.

Wall Thickness (mm) C o o li n g T im e ( S e c ) 40 35 30 25 20 15 10 5 0 0 1 2 3 4 ABS PC Nylon 6/6 FIGURE 1 - Wall thickness vs . cooling time of various plastics FIGURE 2 - Designing for wall thickness changes FIGURE 3 - Internal and external radius guidelines FIGURE 4 - Coring for tight radius design ESCR Design Guide 2 CONTOUR Where possible, contouring the products’ exterior form, as shown in Figure 5, can help to eliminate pooling of fluids .

PolyOne Corporation Page 4 PolyOne Commodity to Specialty Transformation • Volume driven, commodity producer • Heavily tied to cyclical end markets • Performance largely dependent on non- controlling joint ventures 2000-2005 2006 - 2009 2010 – 2014 2015 and beyond • Steve Newlin appointed, Chairman, President and CEO • New leadership team appointed • Implementation of four pillar strategy • Focus on value based selling, investment in commercial resources and innovation to drive transformation • 18 consecutive quarters of double- digit adjusted EPS growth • Shift to faster growing, high margin, less cyclical end markets • Key acquisitions propel current and future growth, as well as margin expansion • Established aggressive 2015 targets • Continue specialty transformation • Targeting $2.50 Adjusted EPS by 2015, nearly double 2013 EPS • Drive double digit operating income and adjusted EPS growth PolyOne Corporation Page 5 Building & Construction 13% Industrial 12% Transportation 18% Wire & Cable 9% Packaging 16% Consumer 10% HealthCare 11% Appliance 6% Electronics & Electrical 5% 2013 Revenues: $3.8 Billion End Markets 2013 Revenues: $3.8 Billion PolyOne At A Glance United States 67% Europe 14% Canada 7% Asia 6% Latin America 6% Specialty 54% PP&S 18% Distribution 28% $13 $31 $46 $46 $92 $96 $122 $195 $0 $50 $100 $150 $200 2006 2007 2008 2009 2010 2011 2012 2013 Specialty Operating Income PolyOne Corporation Page 6 Old PolyOne Transformation *Operating Income excludes corporate charges and special items 2% 34% 43% 62% 64% 0% 20% 40% 60% 80% 100% 2005 2008 2010 2013 Q1 2014 2015 % o f O p e ra ti n g I n c o m e * JV's Performance Products & Solutions Distribution Specialty 65-75% Specialty OI $5M $46M $87M $195M $60M Target Mix Shift Highlights Specialty Transformation 2015 Target PolyOne Corporation Page 7 Confirmation of Our Strategy The World’s Premier Provider of Specialized Polymer Materials, Services and Solutions Specialization Globalization Operational Excellence Commercial Excellence PolyOne Corporation Page 8 -150.00% -50.00% 50.00% 150.00% 250.00% 350.00% 450.00% 550.00% POL S&P 500 Strategy and Execution Drive Results $0.12 $0.27 $0.21 $0.13 $0.68 $0.82 $1.00 $1.31 '06 '07 '08 '09 '10 '11 '12 '13 ‘06-‘13 EPS CAGR = 41% EPS Share Price vs.