Feb 10, 2025

In Januar y we acquired Fiber-Line, a global leader in customized engineered fibers and composite materials that ser ves the fiber optic cable, oil & gas, industrial and consumer industries.

EXECUTIVE COMPENSATION Outstanding Equity Awards at 2017 Fiscal Year-End Option Exercise Price ($) (e) Option Expiration Date (f) Market Value of Shares or Units of Stock That Have Not Vested ($) (h) Equity Incentive Plan Awards: Market or Payout Value of Unearned Shares, Units or Other Rights that Have Not Vested ($) (j) - - 25,039 (1) 1,089,197 - - - 35,796 (2) 1,557,126 - - - 39,630 (3) 1,723,905 - - - - 52,524 (6) 2,284,794 - - - 52,524 (6) 2,284,794 30,500 (7) 14.81 2/16/2021 - - 48,800 (8) 14.61 2/14/2022 - - 30,700 (9) 23.08 2/15/2023 - - 20,500 (10) 35.07 2/11/2024 - - 44,467 (11) 22,233 (11) 38.27 2/4/2025 - - 35,067 (12) 70,133 (12) 24.98 2/10/2026 - - 118,200 (13) 34.10 2/15/2027 - - - - 6,996 (1) 304,326 - - - 8,553 (2) 372,056 - - - 8,272 (3) 359,832 - 17,400 (10) 35.07 2/11/2024 - - 12,467 (11) 6,233 (11) 38.27 2/4/2025 - - 8,384 (12) 16,766 (12) 24.98 2/10/2026 - - 24,650 (13) 34.10 2/15/2027 - - - - 2,718 (1) 118,233 - - - 3,558 (2) 154,773 - 3,909 (3) 170,042 - - 10,073 (4) 438,176 - 2,600 (8) 14.61 2/14/2022 - - 2,867 (9) 23.08 2/15/2023 - - 3,000 (10) 35.07 2/11/2024 - - 4,867 (11) 2,433 (11) 38.27 2/4/2025 - - 3,467 (12) 6,933 (12) 24.98 2/10/2026 - - 11,600 (13) 34.10 2/15/2027 - - - - 3,447 (1) 149,945 - - - 4,382 (2) 190,617 - - - 4,467 (3) 194,315 7,800 (10) 35.07 2/11/2024 - - 6,134 (11) 3,066 (11) 38.27 2/4/2025 - - 4,300 (12) 8,600 (12) 24.98 2/10/2026 - - 13,250 (13) 34.10 2/15/2027 - - - - 3,554 (1) 154,599 - - - 4,639 (2) 201,797 - - - 4,620 (3) 200,970 - 23,300 (8) 14.61 2/14/2022 - - 13,700 (9) 23.08 2/15/2023 - - 8,700 (10) 35.07 2/11/2024 - - 6,200 (11) 3,100 (11) 38.27 2/4/2025 - - 4,517 (12) 9,033 (12) 24.98 2/10/2026 - - 13,750 (13) 34.10 2/15/2027 - - - - 3,751 (5) 163,169 - - - 4,382 (2) 190,617 - - - 4,213 (3) 183,266 6,600 (14) 3,300 (14) 40.19 5/15/2025 - - 4,300 (12) 8,600 (12) 24.98 2/10/2026 - - 12,450 (13) 34.10 2/15/2027 - - - - 4,177 (1) 181,700 - - - 5,102 (2) 221,937 - - - 5,025 (3) 218,588 - 10,400 (10) 35.07 2/11/2024 - - 7,467 (11) 3,733 (11) 38.27 2/4/2025 - - 5,000 (12) 10,000 (12) 24.98 2/10/2026 - - 14,900 (13) 34.10 2/15/2027 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Number of Shares or Units of Stock That Have Not Vested (#) (g) Number of Securities Underlying Unexercised Options (#) Unexercisable (c) Number of Securities Underlying Unexercised Options (#) Exercisable (b) - - - - - Option Awards - - - - Equity Incentive Plan Awards: Number of Unearned Shares, Units or Other Rights that Have Not Vested (#) (i) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Name (a) Stock Awards B.C.

GLOBALIZATION Positions us to ser ve our customers consistently, ever ywhere in the world. According to The Center for Technology Innovation at Brookings, two-thirds of the world’s population could face water shortages by 2025. More single-ser ve plastic bottles in Australia will now switch to the new fully recycled materials by the end of 2019. 52 Sustainability Report | 2018 Solar energy is part of a sustainable solution to address the challenges of increasing energy demand, decreasing natural resources, and a changing environment.

Globalization Positions us to ser ve our customers consistently, ever ywhere in the world. The Avient Ethics Hotline ser ves as a mechanism for associates to anonymously report any concerns regarding such decisions. For example, an EU directive for use of recycled PET (rPET) in beverage bottles will increase from 25 percent in 2025 to 30 percent in 2030.

GUIDANCE DEBT / LEVERAGE R EDUCTION • Completed sale of Distribution and paid down $750M of debt in November • Strong free cash flow in fourth quarter reduced leverage and enabled paydown of additional $200M of debt • Fixed/Floating Debt Ratio 63/37 • Proven track record of deleveraging following acquisitions through consistent free cash flow generation $725 $725 $725 $575 $500 $400 $600 $525 $425 $650 $650 $650 $600 $2.40B $2.20B 2030 Notes 2029 Term Loan 2026 Term Loan 2025 Notes After Distribution Divestiture Year-End 8 Year-End Leverage 3.8x 3.1x 2.9x 2023 Notes After Avient Protective Materials Acquisition $3.15B 20 22 TRA NSF OR MATI ONAL PORTFOLI O ENHA NC EMENTS 9 EBITDA margins expanded from 12% to 16% Diversified end markets with reduced exposure to more cyclical industries Dyneema® Acquisition $1.48B acquisition strengthens composites platform Significantly improved EBITDA margins $950M divestiture results in 100% specialty sales Strong exit multiple of 10x TTM EBITDA despite market volatility Distribution Divestiture Improved Portfolio G ROW I NG C OM PO SI T ES P LAT F OR M C O NT R I BU TI O NS TO S EM S EG ME NT 10 Note: 2022 is pro forma for Avient Protective Materials 2016 Sales 2022 Sales Advanced Composites 51% $560M $1,300M Advanced Composites 9% C O M P O S I T E S P O R T F O L I O D Y N E E M A ® E X P A N D S O U R E N G I N E E R E D F I B E R S A N D T A P E S T E C H N O L O G Y LFT Tapes Laminates/Panels Shapes Pultrusion Engineered Fibers 11 ADVA NC ED C OM POSI TES PERFORMA NCE 12 (1) Pro forma for the acquisition of Avient Protective Materials Sales $51 $84 $212 $668 2016 2018 2020 2022 $4 $10 $41 $169 2016 2018 2020 2022 EBITDA (1) (1) ($ in millions) PORTFOLIO EVOLUTION AND EPS EXPANSION 13 Adj.

GUIDANCE DEBT / LEVERAGE R EDUCTION • Completed sale of Distribution and paid down $750M of debt in November • Strong free cash flow in fourth quarter reduced leverage and enabled paydown of additional $200M of debt • Fixed/Floating Debt Ratio 63/37 • Proven track record of deleveraging following acquisitions through consistent free cash flow generation $725 $725 $725 $575 $500 $400 $600 $525 $425 $650 $650 $650 $600 $2.40B $2.20B 2030 Notes 2029 Term Loan 2026 Term Loan 2025 Notes After Distribution Divestiture Year-End 4 Year-End Leverage 3.8x 3.1x 2.9x 2023 Notes After Avient Protective Materials Acquisition $3.15B 20 22 TRA NSF OR MATI ONAL PORTFOLI O ENHA NC EMENTS 5 EBITDA margins expanded from 12% to 16% Diversified end markets with reduced exposure to more cyclical industries Dyneema® Acquisition $1.48B acquisition strengthens composites platform Significantly improved EBITDA margins $950M divestiture results in 100% specialty sales Strong exit multiple of 10x TTM EBITDA despite market volatility Distribution Divestiture Improved Portfolio G ROW I NG C OM PO SI T ES P LAT F OR M C O NT R I BU TI O NS TO S EM S EG ME NT 6 Note: 2022 is pro forma for Avient Protective Materials 2016 Sales 2022 Sales Advanced Composites 51% $560M $1,300M Advanced Composites 9% C O M P O S I T E S P O R T F O L I O D Y N E E M A ® E X P A N D S O U R E N G I N E E R E D F I B E R S A N D T A P E S T E C H N O L O G Y LFT Tapes Laminates/Panels Shapes Pultrusion Engineered Fibers 7 ADVA NC ED C OM POSI TES PERFORMA NCE 8 (1) Pro forma for the acquisition of Avient Protective Materials Sales $51 $84 $212 $668 2016 2018 2020 2022 $4 $10 $41 $169 2016 2018 2020 2022 EBITDA (1) (1) ($ in millions) PORTFOLIO EVOLUTION AND EPS EXPANSION 9 Adj.

Additionally, Adjusted EPS excludes the impact of special items and amortization expense associated with intangible assets.2 T R A N S F O R M A T I O N A L O V E R V I E W Avient Protective Materials Dyneema ® RECENT TRANSAC TIONS Acquired Divested $1.45 B $0.95 B 4 Distribution UPDATED CA PI TAL STRUC TURE & LI QUI DI TY • Proceeds from completed sale of Distribution used to pay near-term maturing debt to strengthen balance sheet • Fixed/floating debt ratio of ~55/45 • Proven track record of deleveraging following major acquisitions through strong free cash flow generation • 2022 pro forma net debt/adjusted EBITDA expected to be 3.1x $725 $725 $575 $500 $600 $525 $650 $650 $600 Capital Structure Cash $544 Undrawn Revolver $250 Liquidity $3.15B $2.40B 2030 Notes 2029 Term Loan 2026 Term Loan 2025 Notes 2023 Notes After Dyneema Acquisition After Distribution Divestiture $794M (1) (1) $250M reflects estimated undrawn revolver following the divestiture of Distribution 5 PREVI OUS TR ANSACTIONS Performance Solutions Products & $0.8 B COLOR $1.4 B Acquired (2020)Divested (2019) 6 • Acquisition of Clariant Color business significantly expanded presence in healthcare, packaging and consumer end markets • Strength of portfolio – double-digit annual EBITDA growth since acquisition • $75 million of realized synergies anticipated in 2022 • Acquisition completed on July 1, 2020 for $1.45 billion.

Sources Cash from Balance Sheet $465 New Senior Unsecured Notes 650 New Equity 450 Total Sources $1,565 Uses Clariant Masterbatch $1,500 Clariant India Masterbatch 60 Less: Lease Adjustment (113) Net Purchase Price $1,447 Net Cash Acquired 57 Fees, Expenses & OID 61 Total Uses $1,565 ($ Millions) Cash and Cash Equivalents $370 $450M Senior Secured ABL Revolver - Senior Secured Term Loan B due 2026 624 Other Debt 25 Total Senior Secured Debt $649 5.25% Senior Unsecured Notes due 2023 $600 New Senior Unsecured Notes 650 Total Senior Debt $1,899 Net Debt $1,529 New Equity $450 Pro Forma Capitalization (1) PF 12/31/2019 $450 $600 $624 $743 2019 2020 2021 2022 2023 2024 2025 2026 A T T R A C T I V E F I N A N C I N G S T R U C T U R E Attractive Debt Maturity Profile Existing Revolver Existing Senior Notes Existing Term Loan B New Debt Financing Financing Summary Terms on New Debt  $465 million of cash from the balance sheet expected to fund a portion of the purchase price  Bridge financing for remainder fully committed from Citi, Morgan Stanley and Wells Fargo  Permanent financing expected to include a combination of long-term debt and new equity  The timing of the permanent financing is subject to a number of factors, including, but not limited to, market conditions  PolyOne is committed to preserving a strong balance sheet – Target net leverage at close below 3.5x, excluding synergies  Pro forma capital structure positions PolyOne with flexibility to pursue continued growth strategy  New financing expected to have same or better covenant package than existing capital structure  Capital structure would be “covenant lite” Capital Policy  Transaction in line with PolyOne’s disciplined capital allocation policy  Existing PolyOne dividend policy to be maintained  Focus on deleveraging in the near term 2028+ PolyOne Corporation 26 PolyOne Corporation 27 T H E N E W P O L Y O N E : A S P E C I A L T Y G R O W T H C O M P A N Y  Landmark portfolio transformation: > 85% of Adjusted EBITDA from specialty solutions  World-class innovation, technology and service are differentiators  Sustainability initiatives and alignment with megatrends drive above market growth in key end markets and applications:  Capital management is a strength - proven track record of expanding ROIC while increasing invested capital Transaction expected to add $0.85 to pro forma adjusted EPS PolyOne Corporation 28 PolyOne Corporation 29

This innovation drives performance and is reflective of consistent, strategic investments in technology and people Clariant Color business acquired July 1, 2020 1 1 2 3 5 7 7 7 9 10 30 40 14 25 13 22 35 9 19 13 18 41 Current Additional share needed to reach 2025 target B R A N D O W N E R S C O M M I T T E D TO I N C R E A S I N G U S E O F R E C YC L E D M AT E R I A L S 8 Brand Owner 1 Brand Owner 3 Brand Owner 2 Brand Owner 7 Brand Owner 4 Brand Owner 10 Brand Owner 6 Brand Owner 11 Brand Owner 5 Brand Owner 8 Brand Owner 9 Brand Owner 12 Brand Owner 13 Percent recycled plastic used: (examples and not exhaustive) (1) (1) Latest year reported.