V I S I O N PolyOne Corporation 4 To be the world’s premier provider of specialized polymer materials, services and solutions C O R E V A L U E S P E R S O N A L V A L U E S Honesty IntegrityRespect Operational Commercial Specialization Globalization Collaboration ExcellenceInnovation To be the world’s premier provider of specialized polymer materials, services and solutions S A F E T Y F I R S T PolyOne Corporation 5 Injuries per 100 Workers Spartech Acquisition 1.3 1.1 1.1 0.85 0.65 0.57 0.54 0.97 0.84 0.74 0.74 0.69 0.51 0.56 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 C O M M O D I T Y T O S P E C I A L T Y T R A N S F O R M A T I O N PolyOne Corporation 6 • Volume driven, commodity production • Heavily tied to cyclical end markets • Performance largely dependent on non- controlling joint ventures • Shift to value-based selling & an innovative culture • New leadership team appointed • Implementation of four pillar strategy • Investment in commercial training and innovation • Faster growing, high margin focus • Accelerated growth with world class vitality index • Significant commercial resource additions • Expanded margins with specialty focus • Acquired strategic, bolt-on companies to expand technology offerings and improve geographic breadth Volume Value Transformation The Future 2006 - 2013 2013 – 20192000-2005 2006 - 2013 • Landmark portfolio transformation creates specialty growth company • Sustainability / mega- trends drive above market growth 2020 and Beyond PolyOne Corporation 7 P O L Y O N E 2 0 1 9 R E V E N U E | $ 2 . 9 B I L L I O N Segment End Market Geography 15% Healthcare Wire & Cable Building & Electrical & Electronics Color Additives & Inks 34% Distribution 41% Specialty Engineered 25% 54% Latin America P R O O F O F P E RFO RMAN CE C O N S E C U T I V E Y E A R S 10 A D J U S T E D E P S E X P A N S I O N PolyOne Corporation 8 $1.69 $1.51 S U S T A I N A B L E P A T H T O D O U B L E - D I G I T E P S G R O W T H PolyOne Corporation 9 P E O P L E P R O D U C T S P L A N E T P E R F O R M A N C E Double digit annual EPS growth Expand specialty portfolio with strategic acquisitions Innovate and develop new technologies and services Repurchase 600K-1M shares annually Increase commercial resources 5-7% annually Double acquired company margins Enhance efficiencies through Lean Six Sigma and commercial excellence 531 710 1,042 130 164 208 504 663 880 2014 2018 2019E PF* R&D / Technical Marketing Sales PolyOne Corporation 10 + 34% + 26% + 32% E X P A N S I O N O F COMMERCIAL RESOURCES D R I V I N G G R O W T H $2.9 $2.9 $3.5 2015 2016 2017 2018 2019E PF Total + 9% Organic + 5% Revenue in Billions Total + 10% Organic + 7%+ 47% + 27% + 33% $4.0 $3.2 2019E PF* Lead Specialists T H E E V O L V I N G C U S T O M E R R E L A T I O N S H I P PolyOne Corporation 11 Expanded Path Traditional Path Strategic Accounts/ Field Sales Business Development Customer Service Web and Social Media Inside Sales PolyOne Corporation 12 Investments in digital and dedicated inside sales to improve customer experience 110% increase in leads (from 6,000 to 12,700) driven by website, phone, and online chat EXPANDED PATH A D D I N G C U S T O M E R T O U C H P O I N T S 4 33 Inside sellers $11M $87M Inside sales/digital revenue A L I G N I N G W I T H T R E N D S F O R G R O W T H T R A N S P O R T A T I O N P A C K A G I N G H E A L T H C A R E C O N S U M E R PolyOne Corporation 13 Facilitate alternative energy solutions Light- weighting Reduce packaging materials Improve recyclability Reduce spread of infection R E V E N U E F R O M S U S T A I N A B L E S O L U T I O N S PolyOne Corporation 14 2016 2017 2018 2019 Lightweighting Reduced Material Requirements Improved Recyclability Renewable Energy Applications Eco-conscious Bio-derived Content Reduced Energy Use VOC Reduction $275M $325M $355M $410M 14% Total Annual Growth 9% Organic Annual Growth I N N O V A T I O N PolyOne Corporation 15 Customization 55% M&A Innovation Pipeline Innovation comes from Research & Development Spend ($ millions) Vitality Index % of sales from products launched last 5 years 37% 2006 2019 $20 $51 2006 2019 Transformational Opportunity for Growth Through M&A Adjacent Opportunity for Growth Through New Product Pipeline Core Customization 3 H O R I Z O N S O F D E V E L O P M E N T PolyOne Corporation 16 Incremental development from existing base of technology New development adjacent to current New technology development outside of and with our current base Service adjacent markets and Create new markets, target new customer needs Service existing markets and Market Technical I N N O V A T I O N Non-Halogen Flame Retardants Barrier Technologies Fiber Colorants Advanced Composites Thermoplastic Elastomers Gordon Composites/ Polystrand – Composites GLS – Thermoplastic Elastomers ColorMatrix – Liquid Color & Additives PlastiComp Fiber-Line I N N O V A T I O N S P O T L I G H T : C O M P O S I T E S PolyOne Corporation 17 C O M P O S I T E M A T E R I A L S Glass Carbon Aramid Thermosets Thermoplastics PolymersFibers PolyOne Corporation 18 Focused End Markets • Wire & Cable / Electrical • Consumer • Transportation • Industrial C O M P O S I T E S P O R T F O L I O D I V E R S E C A P A B I L I T I E S A N D S O L U T I O N S S E R V I N G M A N U F A C T U R E R S A N D O E M S PolyOne Corporation 19 LFT Tapes Laminates/Panels Shapes Pultrusion Engineered Fibers P O L Y O N E A P P L I C A T I O N S I N F I B E R O P T I C C A B L E S PolyOne Corporation 20 1.

Reconciliation of Pro Forma Adjusted Earnings per Share: Nine Months Ended September 30, 2020 Year Ended December 31, 2020 Net income from continuing operations attributable to Avient shareholders $ 57.8 $ 132.0 Special items, after tax 42.0 24.8 Adjusted net income from continuing operations excluding special items 99.8 156.8 Clariant MB pro forma adjustments to net income from continuing operations(2) 20.7 20.7 Pro forma adjusted net income from continuing operations attributable to Avient shareholders $ 120.5 $ 177.5 Weighted average diluted shares 90.7 90.6 Pro forma impact to diluted shares from January 2020 equity offering(2) 2.9 1.5 Pro forma weighted average diluted shares 93.6 92.1 Adjusted EPS - excluding special items pro forma for Clariant MB acquisition $ 1.29 $ 1.93 (2) Pro forma adjustments for the periods prior to the acquisition date (July 1, 2020) and to give effects to the financing for the acquisition 15 Nine Months Ended September 30, 2020 Reconciliation of Pro Forma Adjusted Earnings per Share: Avient Special Items Adjusted Avient Clariant MB Pro Forma Adjustments(2) Pro Forma Adjusted Avient Sales $ 2,245.1 $ — $ 2,245.1 $ 540.5 $ 2,785.6 Operating income $ 124.3 $ 59.1 $ 183.4 $ 45.0 $ 228.4 Interest expense, net (55.3) — (55.3) (18.1) (73.4) Pension settlement gain and mark-to-market adjustment — (6.9) (6.9) — (6.9) Other income, net 12.6 0.3 12.9 — 12.9 Income taxes (22.5) (10.5) (33.0) (6.2) (39.2) Net income attributable to noncontrolling interests (1.3) — (1.3) — (1.3) Net income from continuing operations attributable to Avient shareholders $ 57.8 $ 42.0 $ 99.8 $ 20.7 $ 120.5 Weighted average diluted shares 90.7 Impact to diluted shares from January 2020 equity offering 2.9 Pro forma weighted average diluted shares 93.6 Pro forma adjusted EPS $ 1.29 (2) Pro forma adjustments for the periods prior to the acquisition date (July 1, 2020) and to give effects to the financing for the acquisition 16 Reconciliation of EBITDA by Segment Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Operating income: Color, Additives and Inks $ 66.8 $ 50.5 $ 241.9 $ 123.3 Specialty Engineered Materials 31.7 24.7 103.2 64.0 Distribution 23.8 17.5 71.5 51.5 Corporate and eliminations (43.6) (59.2) (109.4) (114.5) Operating income $ 78.7 $ 33.5 $ 307.2 $ 124.3 Items below OI in Corporate: Other income, net $ 1.4 $ 1.5 $ 4.1 $ 12.6 Depreciation & amortization: Color, Additives and Inks $ 26.6 $ 26.3 $ 79.2 $ 48.0 Specialty Engineered Materials 7.9 7.5 23.8 22.7 Distribution 0.2 0.2 0.6 0.4 Corporate and eliminations 2.1 2.5 4.1 6.2 Depreciation & Amortization $ 36.8 $ 36.5 $ 107.7 $ 77.3 EBITDA: Color, Additives and Inks $ 93.4 $ 76.8 $ 321.1 $ 171.3 Specialty Engineered Materials 39.6 32.2 127.0 86.7 Distribution 24.0 17.7 72.1 51.9 Corporate and eliminations (41.5) (56.7) (105.3) (108.3) EBITDA $ 116.9 $ 71.5 $ 419.0 $ 214.2 EBITDA as a % of Sales: Color, Additives and Inks 15.9 % 15.6 % 17.6 % 17.5 % Specialty Engineered Materials 17.0 % 18.5 % 18.4 % 16.7 % Distribution 5.5 % 6.4 % 6.0 % 6.4 % 17 Reconciliation of Pro Forma EBITDA - Color, Additives and Inks Nine Months Ended September 30, 2020 Sales: Color, Additives and Inks $ 977.1 Clariant MB pro forma adjustments(2) 540.5 Pro forma sales $ 1,517.6 Operating income: Color, Additives and Inks $ 123.3 Clariant MB pro forma adjustments(2) 45.0 Pro forma operating income $ 168.3 Depreciation & amortization: Color, Additives and Inks $ 48.0 Clariant MB pro forma adjustments(2) 30.1 Pro forma depreciation & amortization $ 78.1 Earnings Before Interest, Taxes, Depreciation and Amortization (EBITDA): Color, Additives and Inks $ 171.3 Clariant MB pro forma adjustments(2) 75.1 Pro forma EBITDA $ 246.4 Pro forma EBITDA as a % of Sales 16.2 % (2) Pro forma adjustments for the periods prior to the acquisition date (July 1, 2020) and to give effects to the financing for the acquisition Three Months Ended September 30, Nine Months Ended September 30, Reconciliation to EBITDA and Pro Forma Adjusted EBITDA: 2021 2020 2021 2020 Net income from continuing operations – GAAP $ 52.6 $ 2.6 $ 201.7 $ 59.1 Income tax expense 8.5 2.7 51.8 22.5 Interest expense 19.0 29.7 57.8 55.3 Depreciation and amortization from continuing operations 36.8 36.5 107.7 77.3 EBITDA $ 116.9 $ 71.5 $ 419.0 $ 214.2 Special items, before tax 19.9 50.0 36.5 62.0 Interest expense included in special items — (9.6) — (10.1) Depreciation and amortization included in special items (0.9) (1.3) (0.1) (2.5) Adjusted EBITDA $ 135.9 $ 110.6 $ 455.4 $ 263.6 Clariant MB pro forma adjustments(2) — — — 75.1 Pro forma adjusted EBITDA $ 135.9 $ 110.6 $ 455.4 $ 338.7 (2) Pro forma adjustments for the periods prior to the acquisition date (July 1, 2020) and to give effects to the financing for the acquisition NEWS RELEASE Attachment 1

Any such program should be reviewed by the Avient Legal Department before it is implemented. 16.

Kupující odškodní a ochrání Prodávajícího před veškerou odpovědností za Náklady Kupujícího na odškodnění, které vzniknou v důsledku nebo v souvislosti s tím, že Kupující výše uvedené informace nerozšířil. 16.

Except in the case of a force majeure, if not satisfied with Seller’s determination, Buyer as its sole remedy shall have a right to terminate this contract without further obligation upon: (i) ten (10) calendar days’ written notice; and (ii) payment for all Product received to date. 16.

These risks could result in changes to our products that we offer to our customers but could also be impacted by our customer’s perception Avient CDP Climate Change Questionnaire 2022 Friday, July 29, 2022 16 of our operations. In 2021, our sustianable solutions portfolio grew by 16% over prior year. In 2021, our sustainable solutions portfolio grew by over 16% over the prior year (compared to our overall corporate growth of 12% annually).

Reconciliation of Pro Forma Net Debt December 31, 2022 Short-term and current portion of long term debt $ 2.2 Total long-term debt, net 2,176.7 Unamortized discount and debt issuance cost 37.4 Total debt $ 2,216.3 Cash (641.1) Net taxes due from sale of business 105.0 Adjusted cash $ (536.1) Net debt $ 1,680.2 16 Free Cash Flow Calculation December 31, 2022 Cash provided by operating activities 398.4 Capital expenditures (105.5) Free cash flow $ 292.9 Reconciliation to EBITDA and Adjusted EBITDA Year Ended December 31, 2022 Net (loss) income from continuing operations – GAAP $ 83.1 Income tax (benefit) expense (19.3) Interest expense 119.8 Depreciation and amortization from continuing operations 162.5 EBITDA $ 346.1 Special items, before income tax 194.0 Interest expense included in special items (26.0) Depreciation and amortization included in special items (5.5) APM pro forma adjustments - 8 months 2022* 83.1 Adjusted EBITDA $ 591.7 * Pro forma adjustment for January - August 2022 APM results (period before Avient ownership).

Chamber of Commerce; BEAD refers to Broadband Equity, Access, and Deployment Program 16 • Fiscal Year 2024 U.S.

Reconciliation of Pro Forma Adjusted Earnings per Share: Three Months Ended Net income from continuing operations attributable to Avient shareholders $ 33.1 Special items, after tax (Attachment 3) 8.6 Adjusted net income from continuing operations excluding special items 41.7 Clariant MB pro forma adjustments to net income from continuing operations(2) 7.8 Pro forma adjusted net income from continuing operations attributable to Avient shareholders $ 49.5 Weighted average diluted shares 86.7 Pro forma impact to diluted shares from January 2020 equity offering 6.1 Pro forma weighted average diluted shares 92.8 Adjusted EPS - excluding special items pro forma for Clariant MB acquisition $ 0.53 December 31, 2020 Reconciliation of Pro Forma Adjusted Earnings per Share: Avient Special Adjusted Clariant MB Pro Forma Adjustments(2) Pro Forma Adjusted 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 (2) Pro forma adjustments for the periods prior to the acquisition date (July 1, 2020) and to give effects to the financing for the acquisition 14 December 31, 2019 Reconciliation of Pro Forma Adjusted Earnings per Share: Avient Special Adjusted Clariant MB Pro Forma Adjustments(3) Pro Forma Adjusted 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 (3) Pro forma adjustments for the periods prior to the acquisition date (July 1, 2020) and to give effects to the financing for the acquisition 15 Reconciliation of EBITDA by Segment Year Ended December 31, 2021 2020 2020 2019 2018 Color, Additives and Inks $ 88.8 $ 40.5 $ 180.8 $ 147.4 $ 158.5 Specialty Engineered Materials 34.2 22.3 94.4 83.7 72.3 Distribution 24.0 19.4 69.5 75.4 71.5 Corporate and eliminations (26.6) (29.4) (155.4) (149.7) (123.7) Operating income $ 120.4 $ 52.8 $ 189.3 $ 156.8 $ 178.6 Items Below OI in Corporate Other income, net $ 1.5 $ 1.6 $ 24.3 $ 12.1 $ (12.9) Depreciation & Amortization: Color, Additives and Inks $ 27.4 $ 10.9 $ 75.1 $ 42.7 $ 44.3 Specialty Engineered Materials 7.8 7.5 30.0 29.5 23.2 Distribution 0.2 0.1 0.7 0.5 0.7 Corporate and eliminations 1.7 1.4 9.2 5.4 4.4 Depreciation & Amortization $ 37.1 $ 19.9 $ 115.0 $ 78.1 $ 72.6 EBITDA Color, Additives and Inks $ 116.2 $ 51.4 $ 255.9 $ 190.1 $ 202.8 Specialty Engineered Materials 42.0 29.8 124.4 113.2 95.5 Distribution 24.2 19.5 70.2 75.9 72.2 Corporate and eliminations (24.9) (28.0) (146.2) (144.3) (119.3) EBITDA $ 159.0 $ 74.3 $ 328.6 $ 247.0 $ 238.3 EBITDA as a % of Sales: Color, Additives and Inks 19.1 % 20.0 % 17.0 % 18.9 % 19.4 % Specialty Engineered Materials 19.4 % 16.1 % 17.6 % 15.2 % 14.8 % Distribution 6.7 % 6.7 % 6.3 % 6.4 % 5.7 % 16 Reconciliation of Pro Forma EBITDA - Color, Additives and Inks Three Months Ended March 31, Year Ended December 31, 2020 2020 2019 2018 Sales: Color, Additives and Inks $ 256.5 $ 1,502.9 $ 1,003.8 $ 1,046.5 Clariant MB pro forma adjustments(4) 279.4 540.4 1,118.6 1,209.8 Pro forma sales $ 535.9 $ 2,043.3 $ 2,122.4 $ 2,256.3 Color, Additives and Inks $ 40.5 $ 180.8 $ 147.4 $ 158.5 Clariant MB pro forma adjustments(4) 23.0 45.0 72.9 80.3 Pro forma operating income $ 63.5 $ 225.8 $ 220.3 $ 238.8 Depreciation & amortization: Color, Additives and Inks $ 10.9 $ 75.1 $ 42.7 $ 44.3 Clariant MB pro forma adjustments(4) 15.1 30.1 60.3 61.2 Pro forma depreciation & amortization $ 26.0 $ 105.2 $ 103.0 $ 105.5 Earnings Before Interest, Taxes, Depreciation and Amortization (EBITDA): Color, Additives and Inks $ 51.4 $ 255.9 $ 190.1 $ 202.8 Clariant MB pro forma adjustments(4) 38.1 75.1 133.2 141.5 Pro forma EBITDA $ 89.5 $ 331.0 $ 323.3 $ 344.3 Pro forma EBITDA as a % of Sales 16.7 % 16.2 % 15.2 % 15.3 % Three Months Ended March 31, Year Ended December 31, Reconciliation to Adjusted EBITDA: 2021 2020 2020 2019 2018 Net income from continuing operations – GAAP $ 79.7 $ 33.1 $ 133.8 $ 75.7 $ 87.4 Income tax expense 22.9 11.9 5.2 33.7 14.4 Interest expense 19.3 9.4 74.6 59.5 62.8 Debt extinguishment cost — — 1.1 Depreciation and amortization from continuing operations 37.1 19.9 115.0 78.1 72.6 EBITDA $ 159.0 $ 74.3 $ 328.6 $ 247.0 $ 238.3 Special items, before tax 2.4 9.6 66.2 61.7 59.5 Interest expense included in special items — — (10.1) — — Accelerated depreciation included in special items (0.5) — (3.2) — (3.0) Adjusted EBITDA $ 160.9 $ 83.9 $ 381.6 $ 308.7 $ 294.8 Reconciliation of Pro Forma Sales: Three Months Ended Sales $ 711.5 Clariant MB pro forma adjustment to sales(4) 279.4 Pro forma sales $ 990.9 (4) Pro forma adjustments for the periods prior to the acquisition date (July 1, 2020) 17 Avient Announces Record First Quarter 2021 Results; Increases Full Year Guidance.pdf NEWS RELEASE 4.29 232pm News Release (002).pdf

Buyer expressly warrants that employees, agents and subcontractors of Buyer shall not directly or indirectly (i) accept, promise, offer or provide any improper advantage to, or (ii) enter into an agreement (a) with any entity or person, including officials of a government or a government-controlled entity, or (b) relating to a product, which would constitute an offense or infringement of applicable Laws and Standards. 16.