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Those making reports can remain anonymous. https://www.avient.com/company/policies-and-governance/code-conduct https://secure.ethicspoint.com/domain/media/en/gui/49178/index.html Avient Corporation 33587 Walker Road Avon Lake, OH 44012 3 Our Supply Chain At Avient, we commit to comply with laws and regulations supporting human rights such as the California Transparency in Supply Chains Act, the UK Modern Slavery Act, the Dodd-Frank Act requiring disclosures on conflict minerals, and the EU’s - Conflict Minerals Regulation. Our disclosures are located at: https://www.avient.com/company/policies-and-governance/ca-transparency-act-disclosure https://www.avient.com/company/policies-and-governance/europe-modern-slavery-and-human-trafficking- statement We reinforce Our Commitment to human rights, as set forth above, throughout our organization by incorporating and reflecting these principles in organizational policies, training programs, and our governance management framework. Our Supplier Code of Conduct can be found at: https://www.avient.com/sites/default/files/2020-10/supplier-code-of-conduct.pdf Our Supplier Code of Conduct drives interactions with our suppliers and our expectations for doing business, and generally aligns with International Labor Organization (ILO) standards. https://www.avient.com/company/policies-and-governance/ca-transparency-act-disclosure https://www.avient.com/company/policies-and-governance/europe-modern-slavery-and-human-trafficking-statement https://www.avient.com/company/policies-and-governance/europe-modern-slavery-and-human-trafficking-statement https://www.avient.com/sites/default/files/2020-10/supplier-code-of-conduct.pdf

Using GlasArmor panels, Ballisti-Wall® and Ballisti- Cover® solutions enable utility companies to add a superior level of protection to critical components and meet FERC security requirements within a modular, adaptable construction. 1 https://www.nbcnews.com/news/us-news/three-substations- attacked-washington-state-rcna63214 2 https://www.ferc.gov/sites/default/files/2020-04/E-4_10.pdf © 2023, All Rights Reserved Avient Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012 To learn more about Avient’s advanced composite solutions, visit www.avient.com/composites. https://www.nbcnews.com/news/us-news/three-substations-attacked-washington-state-rcna63214 https://www.nbcnews.com/news/us-news/three-substations-attacked-washington-state-rcna63214 https://www.ferc.gov/sites/default/files/2020-04/E-4_10.pdf http://www.avient.com/composites

Richardson 4:30 2020 Platinum Vision and Q&A Robert M. sa=i&source=images&cd=&cad=rja&uact=8&ved=0CAgQjRw&url=http://www.casacriss.com/clients/&ei=k8PwVOe1LMaAygTc9oKICQ&psig=AFQjCNEFV8ug9KtNI6KNKJMKNt_DTFne-A&ust=1425151251896066 http://www.fenwalinc.com/ http://www.google.com/url? sa=i&source=images&cd=&cad=rja&uact=8&ved=0CAgQjRw&url=http://www.casacriss.com/clients/&ei=k8PwVOe1LMaAygTc9oKICQ&psig=AFQjCNEFV8ug9KtNI6KNKJMKNt_DTFne-A&ust=1425151251896066 http://www.fenwalinc.com/ http://www.google.com/url?

This is the case for Avient as well, but what further differentiates us, is that in 2020 our EPS also grew 11% vs. 2019. Pro Forma The Company acquired the Clariant Masterbatch business (“CMB”) on July 1, 2020 (the “Acquisition Date”). For more information, visit www.avient.com. # # # https://www.avient.com/investors/ https://edge.media-server.com/mmc/p/eaivs28r https://edge.media-server.com/mmc/p/eaivs28r https://www.avient.com/investors/ http://www.avient.com/ 5 Forward-looking Statements In this press release, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995.

Microsoft PowerPoint - AVNT Investor Day V40 (Print) Investor Day 2021 (NYSE: AVNT) Shaping a Sustainable Future December 9, 2021 Agenda 8:00 WELCOME BREAKFAST 9:00 WE ARE AVIENT: Bob Patterson 9:15 BETTER TOGETHER AND CUSTOMER EXPERIENCE: Norbert Merklein 9:45 LONG-TERM ORGANIC GROWTH DRIVERS: Sustainable Solutions: Michael Garratt and Walter Ripple Healthcare: Cathy Dodd 10:45 BREAK 11:00 Composites: Chris Pederson and Matt Reinhardt Growth in Asia and Latin America: Woon Keat Moh INNOVATION: Where Are We Going Next? Avient acquired the Clariant Color business on July 1, 2020 (the “Acquisition Date”). 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

WEIGHT REDUCTION • Up to 75% lighter than steel; up to 25% lighter than aluminum • Better fuel economy for transportation • Simplified installation DESIGN FLEXIBILITY • Complex shapes less costly to produce than metal • Ability to tailor strength and stiffness in specific areas • Versatile aesthetic options for surface finish PART CONSOLIDATION • Easier installation and assembly with fewer parts • Simplified transport of finished goods • Fewer parts = reduced chance of failure Value that the U.S. composite materials market is expected to reach by 2022 $10.6B 50% Amount of weight reduction that advanced composites could bring to passenger cars, leading to 35% better fuel efficiency 7% CAGR that analyst firm Technavio forecasts the global medical composite materials market will experience from 2016–2020 Fiber-reinforced polymer composites combine thermoset or thermoplastic resins with fiber reinforcement, the resulting product having substantially different properties than the individual components. Advantages Recyclability, enhanced toughness, chemical resistance, noise and vibration damping, post-formability, and lower density DURABILITY STRENGTH • Corrosion resistance for marine and deep water applications • Improved shock resistance with aramid fibers • Protection from shrapnel for military barriers • Structural performance in aerospace and marine markets • High tensile strength for industrial applications © 2020 Avient, All Rights Reserved For more information on advanced composites, visit avient.com or call +1.844.4AVIENT http://avient.com

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