Go to the Orders page or, on the Invoices page, click the Create Invoice from PO button above the table to go to the Orders page 2. On the Orders page, you can do one of the following: o Click the Create Invoice ( ) icon in the Actions column of the Purchase Orders table o Click on the PO Number link to open the purchase order and click on the Create Invoice button 4 3. Click on the Create Credit Note button above the Invoices table on the Invoices page or, on the Orders page, click on the Create Credit Note ( ) icon in the Actions column of the Purchase Orders table. 2.

In this sense, Avient as a leading company of specialized polymer solutions, which offer polymeric formulations and in general provides materials and solutions for customers of various industries, respects individual privacy and values the trust of its employees, associates, customers, suppliers, contractors and business partners and recognizes its responsibility when carrying out the collection of personal data in the various processes that are carried out within the company. enterprise. In accordance with Article 6 of Law 1581 of 2012, in order to carry out the collection and processing of sensitive data, it will be essential to have the explicit approval of the owner or legal representative, in the case of minors, specifically declaring the purpose of its collection; and provided that the following causes are underway: (i) the processing is required to safeguard the vital interest of the owner and he is physically or legally incapacitated; (ii) is carried out in the course of legitimate activities by non-profit organizations; (iii) When the processing has a historical, statistical or scientific purpose. In order to comply with data protection laws in Colombian law, Avient has entered into an International Data Transfer Agreement within the Group, under which all data importers outside of the Group are obliged to process and protect all personal information received in accordance with the standard controller-to-controller contractual clauses (the "Clauses"), approved by the European Commission.

CLEVELAND, Oct. 12, 2023 /PRNewswire/ -- The Board of Directors of Avient Corporation (NYSE: AVNT), a leading provider of specialized and sustainabl CLEVELAND, Oct. 6, 2023 /PRNewswire/ -- Avient Corporation (NYSE: AVNT), a leading provider of specialized and sustainable material solutions, inten GAAP EPS of $0.24 includes special items and amortization expense Adjusted EPS of $0.63 exceeded guidance of $0.60, driven by better-than

CLEVELAND – October 27, 2020 – Avient Corporation, a premier provider of specialized and sustainable material solutions and services, today announ SHANGHAI – September 23, 2020 – Avient Corporation, a premier provider of specialized and sustainable material solutions and services, is showcasi CLEVELAND – September 21, 2020 – Avient Corporation, a premier provider of specialized and sustainable material solutions and services, today anno

The sheet producer began experimenting with material changes in-house, but struggled to achieve consistency of release. This additive technology has proven effective for use in other applications such as a mold release during thermoforming, helping to reduce processing interruptions. Avient offers OnCap™ Denesting additive solutions to enable effective package separation and improve manufacturing operations such as mold release during thermoforming and packaging pick and place operations.

Unless otherwise stated, Adjusted Operating Income, Adjusted EBITDA and Adjusted EPS figures included in this presentation exclude the impact of special items as defined in our quarterly earnings releases. C O - C R E A T I O N . • Fostering imagination • Enabling creative exploration • Focus on customers’ sustainability • Driving long-term revenue growth ColorWorks Avient Corporation 21 • Rapid customer response • Immediate color measurement and quotation • Fast track product development to “now” • Specialized labs for fast sample delivery • Optimized formulations leveraging cost effective raw materials C U S T O M E R - F O C U S E D C O L O R F O R M U L A T I O N Avient Corporation 22 InstaColr CycleWorks A D V A N C I N G T H E C I R C U L A R E C O N O M Y • Laboratory mimics real-world circular recycling in a research environment • Conducts chemistry testing to improve plastics recycling for customers • Screening and evaluation of additive and colorant systems during recycling • Collaboration platform for customers and value chain partners Avient Corporation 23 Avient Corporation 24 Sustainable Solutions Michael Garratt and Walter Ripple Our Sustainability Promise As the world’s premier provider of specialized polymer materials, services and solutions, Avient is committed to meeting the needs of the present without compromising future generations’ ability to meet their needs. Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) Reconciliation of EBITDA by Segment Year Ended December 31, 2019 Sales: Color, Additives and Inks $ 1,003.8 Specialty Engineered Materials 745.7 Distribution 1,192.2 Corporate and eliminations (79.0) Sales $ 2,862.7 Operating income: Color, Additives and Inks $ 147.4 Specialty Engineered Materials 83.7 Distribution 75.4 Corporate and eliminations (149.7) Operating income $ 156.8 Items below OI in Corporate: Other income, net $ 12.1 Depreciation & amortization: Color, Additives and Inks $ 42.7 Specialty Engineered Materials 29.5 Distribution 0.5 Corporate and eliminations 5.4 Depreciation & Amortization $ 78.1 EBITDA: Color, Additives and Inks $ 190.1 Specialty Engineered Materials 113.2 Distribution 75.9 Corporate and eliminations (132.2) EBITDA $ 247.0 EBITDA as a % of Sales: Color, Additives and Inks 18.9 % Specialty Engineered Materials 15.2 % Distribution 6.4 % 1 Reconciliation of Pro Forma EBITDA - Color, Additives and Inks Year Ended December 31, 2019 Sales: Color, Additives and Inks $ 1,003.8 Clariant Color pro forma adjustments(1) 1,118.6 Pro forma sales $ 2,122.4 Operating income: Color, Additives and Inks $ 147.4 Clariant Color pro forma adjustments(1) 72.9 Pro forma operating income $ 220.3 Depreciation & amortization: Color, Additives and Inks $ 42.7 Clariant Color pro forma adjustments(1) 60.3 Pro forma depreciation & amortization $ 103.0 EBITDA Color, Additives and Inks $ 190.1 Clariant Color pro forma adjustments(1) 133.2 Pro forma EBITDA $ 323.3 Pro forma EBITDA as a % of Sales 15.2 % (1) - Pro forma adjustments for the periods prior to the acquisition date (July 1, 2020) and to give effects of the financing for the acquisition 2009* 2010* 2011* 2012* 2013 2014 2015 2016** 2017 2018 2018*** 2019*** 2020 Net income from continuing operations attributable to Avient common shareholders $ 106.7 $ 152.5 $ 153.4 $ 53.3 $ 94.0 $ 78.0 $ 144.6 $ 166.4 $ 173.5 $ 161.1 $ 87.7 $ 75.5 $ 152.7 Joint venture equity earnings, after tax (19.0) (14.7) (3.7) — — — — — — — — — — Special items, before tax(1) (48.7) 24.2 (48.1) 55.1 46.3 164.2 87.6 23.8 32.9 59.5 58.7 61.7 66.2 Special items, tax adjustments(1) (27.2) (96.7) (24.7) (18.9) (13.7) (73.7) (58.7) (15.9) (24.8) (25.3) (25.1) (5.9) (41.4) Adjusted net income from continuing operations attributable to Avient common shareholders $ 11.8 $ 65.3 $ 76.9 $ 89.5 $ 126.6 $ 168.5 $ 173.5 $ 174.3 $ 181.6 $ 195.3 $ 121.3 $ 131.3 $ 177.5 Diluted shares 93.4 96.0 94.3 89.8 96.5 93.5 88.7 84.6 82.1 80.4 80.4 77.7 92.1 Adjusted EPS attributable to Avient common shareholders $ 0.13 $ 0.68 $ 0.82 $ 1.00 $ 1.31 $ 1.80 $ 1.96 $ 2.06 $ 2.21 $ 2.43 $ 1.51 $ 1.69 $ 1.93 * Historical results have been updated to reflect subsequent changes to accounting principle and discontinued operations, excluding any changes as a result of discontinued operations from the sale of the Designed Structures and Solutions segment (DSS) and the Performance Products and Solutions segment (PP&S). ** Pro Forma for sale of DSS. *** Pro Forma for sale of PP&S. *** Pro Forma for full year of the Clariant Color acquisition 2 Nine Months Ended September 30, Year Ended December 31, Reconciliation to Pro Forma Adjusted EBITDA 2020 2021 2020 2019 Net income from continuing operations – GAAP $ 59.1 $ 201.7 $ 133.8 $ 75.7 Income tax expense 22.5 51.8 5.2 33.7 Interest expense 55.3 57.8 74.6 59.5 Depreciation and amortization from continuing operations 77.3 107.7 115.1 78.1 EBITDA $ 214.2 $ 419.0 $ 328.7 $ 247.0 Special items, before tax 62.0 36.5 66.2 61.7 Interest expense included in special items (10.1) — (10.1) — Depreciation and amortization included in special items (2.5) (0.1) (3.2) — Adjusted EBITDA $ 263.6 $ 455.4 $ 381.6 $ 308.7 Clariant MB pro forma adjustments(1) 75.1 — 75.1 133.2 Pro forma adjusted EBITDA $ 338.7 $ 455.4 $ 456.7 $ 441.9 (1) Pro forma adjustments for the periods prior to the acquisition date (July 1, 2020) and to give effects to the financing for the acquisition Year Ended December 31, 2020 Reconciliation of Pro Forma Adjusted Earnings per Share Avient Special Items Adjusted Avient Clariant MB Pro Forma Adjustments(1) Pro Forma Adjusted Avient Sales $ 3,242.1 $ — $ 3,242.1 $ 540.4 $ 3,782.5 Operating income $ 189.3 $ 73.7 $ 263.0 $ 45.0 $ 308.0 Interest expense, net (74.6) 10.1 (64.5) (18.1) (82.6) Other income, net 24.3 (17.6) 6.7 — 6.7 Income taxes (5.2) (41.4) (46.6) (6.2) (52.8) Net income attributable to noncontrolling interests (1.8) — (1.8) — (1.8) Net income from continuing operations attributable to Avient shareholders $ 132.0 $ 24.8 $ 156.8 $ 20.7 $ 177.5 Weighted average diluted shares 90.6 Impact to diluted shares from January 2020 equity offering 1.5 Pro forma weighted average diluted shares 92.1 Pro forma adjusted EPS $ 1.93 (1) - Pro forma adjustments for the periods prior to the acquisition date (July 1, 2020) and to give effects of the financing for the acquisition 3 Year Ended December 31, 2019 Reconciliation of Pro Forma Adjusted Earnings per Share Avient Special Items Adjusted Avient Clariant MB Pro Forma Adjustments(1) Pro Forma Adjusted Avient Sales $ 2,862.7 $ — $ 2,862.7 $ 1,118.6 $ 3,981.3 Operating income $ 156.8 $ 71.7 $ 228.5 $ 72.9 $ 301.4 Interest expense, net (59.5) — (59.5) (33.4) (92.9) Other income, net 12.1 (10.0) 2.1 — 2.1 Income taxes (33.7) (5.9) (39.6) (9.1) (48.7) Net income attributable to noncontrolling interests (0.2) — (0.2) — (0.2) Net income from continuing operations attributable to Avient shareholders $ 75.5 $ 55.8 $ 131.3 $ 30.4 $ 161.7 Weighted average diluted shares 77.7 Impact to diluted shares from January 2020 equity offering 15.3 Pro forma weighted average diluted shares 93.0 Pro forma adjusted EPS $ 1.74 (1) - Pro forma adjustments for the periods prior to the acquisition date (July 1, 2020) and to give effects of the financing for the acquisition Return on Invested Capital Year Ended December 31, 2006 Short term debt $ 5.2 Current portion of long term debt 22.5 Long term debt 567.7 Shareholder's equity 574.5 Invested capital $ 1,169.9 Cash 66.2 Current invested capital (net) $ 1,103.7 Adjusted operating income 87.5 Current tax rate 0.33 Return on invested capital 5.3 % Year Ended December 31, Reconciliation to Enterprise Value / Adjusted EBITDA 2011 2016 Net income from continuing operations – GAAP $ 172.6 $ 165.0 Income tax expense 26.1 57.3 Interest expense 33.7 59.8 Depreciation and amortization from continuing operations 57.5 105.9 EBITDA $ 289.9 $ 388.0 Special items, before tax (46.7) 35.3 SunBelt equity income (5.7) — Depreciation and amortization included in special items — (5.4) Adjusted EBITDA $ 237.5 $ 417.9 Enterprise value(2) $ 1,542.0 $ 3,763.0 Enterprise value / adjusted EBITDA 6.5 9.0 (2) - Enterprise value is defined as market capitalization plus net debt 4 AVNT 2021 Investor Day adfa.pdf AVNT 2021 Investor Day.pdf AVNT 2021 Investor Day.pdf AVNT 2021 Investor Day - Final.pdf 2021 Investor Day Recs v3 12.2 (002).pdf

COLORANTS AND ADDITIVES FOR WIRE & CABLE PRODUCT SELECTION GUIDE ONCOLOR™ COLORANTS FOR WIRE & CABLE APPLICATION DESCRIPTION PVC General Purpose Cable • Optimal incorporation in PVC formulations • Non ortho-phthalate range available PVC Automotive Cable • Optimized colors for T2 and T3 automotive applications • Non ortho-phthalate range available Unfilled PE, XLPE, PP Cable • Specific color range for unfilled polyolefins • Compatibility with cross-linkable systems • Special range to minimize shrinkage or for thin skin applications Filled Polyolefins, Non-Halogenated Flame Retardant PE Cable • Full range of colors, halogen-free or low amounts of halogens • Designed for incorporation into various non-halogenated flame retardant formulations PE Visico/Ambicat™ Crosslinked Polyethylene1 • Full range of colors for PE Visico/Ambicat™ cross-linked polyethylene • Specifically designed and tested to ensure compatibility with this cross-linking method Thermoset Rubber Cable • Colors designed for use with thermoset rubber • Fully compatible with vulcanization process Unfilled TPU Cable • Color range for unfilled polyester or polyether TPU • Provides good opacity at low addition levels Flame Retardant TPU Cable • Color range for filled/non-halogenated flame retardant TPU • Provides good color strength TPE Cable • Color range designed to enhance performance of various TPE brands • High temperature range available PA Cable • Different color ranges available depending on the polyamide type and the application PBT Cable • PBT color range mostly used in optical fiber, loose tube or tight buffered cables • Selection of pigments to prevent migration of color in gel-filled materials 1 Visico/Ambicat™ Crosslinked Polyethylene is a trademark of Borealis OnColor™ Colorants for wire & cable offer a comprehensive range of color series, covering the diverse specifications demanded by the cable industry. AVIENT WIRE & CABLE CAPABILITIES We have manufacturing facilities and innovation centers located worldwide, allowing us to collaborate with you in order to understand your objectives and offer the necessary expertise to transform your vision into reality.

Unless otherwise stated, Adjusted EBITDA figures included in this presentation exclude the impact of special items as defined in our quarterly earnings releases. We create specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. In addition, operating income before the effect of special items is a component of Avient’s annual incentive plans and is used in debt covenant computations.

Certificate Avient Corporation Certificate Of Conformance This is to certify that the Quality Management System of: Avient Corporation 33587 Walker Road Avon Lake OH 44012 United States (WITH ADDITIONAL FACILITIES LISTED ON ATTACHED ANNEX) has been assessed by ABS Quality Evaluations, Inc. and found to be in conformance with the requirements set forth by: ISO 9001:2015 The Quality Management System is applicable to: Manufacture of plastic compounds, color and performance additives, engineered thermoplastics, vinyl resins, custom mixed plastic materials, custom and commodity colorants for plastics, polyurethane systems, and plasticizers with design and sampling support at Suwanee, GA, and purchasing, customer service, logistics, quality, design and sampling support at Avient Corporate Headquarters at Avon Lake, OH, and distribution of resins Certificate No: 31307 Certification Date: 12 OCT 1995 Effective Date: 04 OCT 2025 Expiration Date: 07 OCT 2028 Revision Date: 08 OCT 2025 Dominic Townsend, President Copyright as of the Effective Date, ABS Quality Evaluations, Inc. Purchasing, Customer Service, Logistics, Quality, Design and Sampling; Corporate HQ 33587 Walker Road Avon Lake OH 44012 United States Avient Corporation Avon Lake SEMS Manufacture of Engineered Thermoplastics 554 Moore Road Avon Lake OH 44012 United States Avient Corporation Manufacture of Colorants for Plastics 7601 North Glen Harbor Blvd. Glendale AZ 85307 United States Avient Corporation Design and manufacture of specialty inks and specialty coatings. 8155 Cobb Center Drive Kennesaw GA 30152 United States Avient Corporation Develop and manufacture silicone colorants, additives, and compounds 707 Boyd Blvd LaPorte IN 46350 United States Avient Corporation Manufacture of Colorants for Plastics 2513 Highland Avenue Bethlehem PA 18017 United States Avient Corporation Manufacture of Color and Performance Additives 1675 Navarre Road Massillon OH 44646 United States Avient Corporation Design, Manufacture and Distribution of Thermoplastic Elastomer Compounds 833 Ridgeview Drive McHenry IL 60050 United States Avient Corporation Design, Manufacture and Distribution of Thermoplastic Elastomer Compounds 831 Ridgeview Drive McHenry IL 60050 United States Avient Corporation Design, Manufacture and Distribution of Thermoplastic Elastomer Compounds 921 Ridgeview Drive McHenry IL 60050 United States Avient Corporation Manufacture of Plasticizers for Industrial and Food Container Applications 855 Oak Hill Road Mountain Top PA 18707 United States Avient Corporation NEU Specialty Engineered Materials, LLC Compound and supply of thermoplastics for the medical device industry 15 Corporate Drive North Haven CT 06473 United States Avient Corporation Design and Sampling 2900 Shawnee Industrial Way Suwanee GA 30024 United States Avient Corporation Avient de México S.

In addition, operating income before special items and adjusted EPS are components of various PolyOne annual and long-term employee incentive plans. • A reconciliation of each non-GAAP financial measure with the most directly comparable GAAP financial measure is attached to this presentation which is posted on our website at www.polyone.com. Adjusted EPS 2006Y* 2007Y* 2008Y* 2009Y* 2010Y 2011Y 2012Y 2013Y Net income attributable to PolyOne common shareholders $ 130.9 $ 40.9 $ (417.0) $ 106.7 $ 152.5 $ 153.4 $ 53.3 $ 94.0 SunBelt equity earnings, after tax (68.5) (26.1) (20.8) (19.0) (14.7) (3.7) - - Special items, after tax (21.2) 41.4 310.0 (31.0) 15.8 (30.5) 35.7 30.4 Tax adjustments (30.0) (30.7) 147.2 (44.9) (88.3) (42.3) 0.5 2.2 Adjusted net income $ 11.2 $ 25.5 $ 19.4 $ 11.8 $ 65.3 $ 76.9 $ 89.5 $ 126.6 Diluted shares 92.8 93.1 92.7 93.4 96.0 94.3 89.8 96.1 Adjusted EPS $ 0.12 $ 0.27 $ 0.21 $ 0.13 $ 0.68 $ 0.82 $ 1.00 $ 1.31 * Historical results include the Resin and Specialty Coatings businesses within the Performance Products and Solutions segment. Reconciliation to Condensed Consolidated Balance Sheets 2013 Short-term debt and current portion of long-term debt $ 12.7 Long-term debt 976.2 Less cash and cash equivalents (365.2) Net debt $ 623.7 Adjusted EBITDA 2013 Income before income taxes $ 151.0 Interest expense, net 63.5 Depreciation and amortization 108.8 Special items in EBITDA 31.7 Adjusted EBITDA $ 355.0 2 Platform sales and operating income (OI) 2006Y* 2013Y Global Specialty Engineered Materials sales $ 345.3 $ 615.5 Global Color, Additives and Inks sales 531.8 852.3 Designed Structures and Solutions sales - 597.4 Specialty Platform sales 877.1 2,065.2 Performance Products and Solutions sales 1,166.2 773.2 PolyOne Distribution sales 732.8 1,075.2 Corporate and eliminations (153.7) (142.4) Total sales $ 2,622.4 $ 3,771.2 Global Specialty Engineered Materials OI $ 3.9 $ 57.2 Global Color, Additives and Inks OI 8.9 104.0 Designed Structures & Solutions OI - 33.4 Specialty Platform OI 12.8 194.6 Performance Products and Solutions OI 64.2 56.0 PolyOne Distribution OI 19.2 63.3 Sunbelt Joint Venture OI 102.9 - Corporate and eliminations (4.6) (52.4) Special items in OI 39.1 (30.0) Operating income GAAP 233.6 231.5 Sunbelt equity income (107.0) - Special items in OI (39.1) 30.0 Adjusted operating income $ 87.5 $ 261.5 Global Specialty Engineered Materials - OI % of sales 1.1% 9.3% Global Color, Additives and Inks - OI % of sales 1.7% 12.2% Designed Structures & Solutions - OI % of sales - 5.6% Specialty platform OI - % of sales 1.5% 9.4% PP&S operating OI - % of sales 5.5% 7.2% Distribution OI - % of sales 2.6% 5.9% PolyOne OI adjusted - % of sales 3.3% 6.9% * Historical results include the Resin and Specialty Coatings businesses within the Performance Products and Solutions segment.