COMPENSATION DISCUSSION AND ANALYSIS PROXY STATEMENT 2025 | Annual Meeting of Shareholders 48 The performance measures for the 2024 Annual Incentive Program were weighted as outlined below.

Lehigh Valley, Pennsylvania 48. The weighted average discount rate used to measure our operating lease liabilities as of December 31, 2023 and 2022 were 5.0% and 4.8%, respectively. 48 AVIENT CORPORATION Future minimum lease payments under non-cancelable operating leases with initial lease terms longer than one year as of December 31, 2023 are as follows: Maturity Analysis of Lease Liabilities: (In millions) 2023 2024 $ 20.3 2025 13.8 2026 10.1 2027 8.2 2028 4.8 Thereafter 12.3 Total $ 69.5 Less amount of lease payment representing interest (9.7) Total present value of lease payments $ 59.8 Note 8 — INVENTORIES, NET Components of Inventories, net as of December 31, 2023 and 2022 are as follows: (In millions) 2023 2022 Finished products $ 166.0 $ 157.7 Work in process 19.8 22.7 Raw materials and supplies 161.2 192.3 Inventories, net $ 347.0 $ 372.7 Note 9 — PROPERTY, NET Components of Property, net as of December 31, 2023 and 2022 are as follows: (In millions) 2023 2022 Land and land improvements $ 98.5 $ 103.5 Buildings 439.8 432.2 Machinery and equipment 1,381.1 1,325.3 Property, gross 1,919.4 1,861.0 Less accumulated depreciation (890.5) (811.8) Property, net $ 1,028.9 $ 1,049.2 Depreciation expense, including accelerated depreciation associated with restructuring actions, from continuing operations was $109.0 million in 2023, $98.9 million in 2022 and $85.5 million in 2021. 49 AVIENT CORPORATION Note 10 — OTHER BALANCE SHEET LIABILITIES Other current and non-current liabilities as of December 31, 2023 and 2022 consist of the following: Accrued expenses and other current liabilities Other non-current liabilities (In millions) 2023 2022 2023 2022 Employment costs $ 119.8 $ 123.4 $ 12.6 $ 8.9 Deferred compensation — — 31.7 25.3 Restructuring costs 35.0 36.7 — — Environmental liabilities 32.1 27.4 125.1 90.9 Accrued taxes 45.5 121.5 — — Accrued interest 33.6 35.5 — — Dividends payable 23.5 22.5 — — Unrecognized tax benefits 3.0 0.6 16.4 26.3 Derivatives — — 199.1 68.6 Accrued capitalized software 10.0 — — — Other 12.7 28.2 9.5 15.5 Total $ 315.2 $ 395.8 $ 394.4 $ 235.5 Note 11 — EMPLOYEE BENEFIT PLANS All U.S. qualified defined benefit pension plans are frozen, no longer accrue benefits and are closed to new participants.

Kunkle 48 Senior Vice President, General Counsel and Secretary M. We expect finite-lived intangibles amortization expense for the next five years as follows: 2017 2018 2019 2020 2021 Expected amortization expense $22.9 $22.9 $22.9 $19.5 $18.5 47POLYONE CORPORATION 48 Note 4 — EMPLOYEE SEPARATION AND RESTRUCTURING COSTS Employee separation and restructuring charges recognized in 2016, 2015 and 2014 were as follows: (In millions) 2016 2015 2014 Cost of goods sold $ 7.0 $ 27.0 $ 54.0 Selling and administrative expenses 12.0 14.9 40.1 Total employee separation and restructuring charges $ 19.0 $ 41.9 $ 94.1 These charges are primarily associated with the current Designed Structures and Solutions (DSS) segment and the former Spartech Corporation (Spartech) businesses, which are further detailed below.

Norwalk, Ohio 48. We 48 AVIENT CORPORATION recognized $9.6 million related to the write-off of unamortized issuance costs and discounts associated within Interest expense, net for the year ended December 31, 2022 due to the prepayments.

FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA Index to Financial Statements Page Management’s Report 41 Reports of Independent Registered Public Accounting Firm 42-43 Consolidated Financial Statements: Consolidated Statements of Income 44 Consolidated Statements of Comprehensive Income 45 Consolidated Balance Sheets 46 Consolidated Statements of Cash Flows 47 Consolidated Statements of Shareholders’ Equity 48 Notes to Consolidated Financial Statements 49-80 40 POLYONE CORPORATION MANAGEMENT’S REPORT The management of PolyOne Corporation is responsible for preparing the consolidated financial statements and disclosures included in this Annual Report on Form 10-K. POLYONE CORPORATION 47 Consolidated Statements of Shareholders’ Equity Common Shares Shareholders’ Equity (In millions) Common Shares Common Shares Held in Treasury Common Shares Additional Paid-in Capital Retained Earnings (Deficit) Common Shares Held in Treasury Accumulated Other Comprehensive Income (Loss) Total PolyOne shareholders’ equity Non- controlling Interests Total equity Balance at January 1, 2011 122.2 (28.3) $ 1.2 $ 1,059.4 $ (257.5) $ (305.6) $ 18.5 $ 516.0 $ — $ 516.0 Net income 172.6 172.6 172.6 Other comprehensive income (19.8) (19.8) (19.8) Cash dividends declared (14.6) (14.6) (14.6) Repurchase of common shares (6.0) (73.6) (73.6) (73.6) Stock-based compensation and exercise of awards 0.9 (2.1) 9.8 7.7 7.7 Balance at December 31, 2011 122.2 (33.4) $ 1.2 $ 1,042.7 $ (84.9) $ (369.4) $ (1.3) $ 588.3 $ — $ 588.3 Net income (loss) 71.9 71.9 (0.1) 71.8 Other comprehensive income (9.8) (9.8) (9.8) Noncontrolling interest activity 2.4 2.4 Cash dividends declared (17.8) (17.8) (17.8) Repurchase of common shares (1.2) (15.9) (15.9) (15.9) Stock-based compensation and exercise of awards 1.9 (8.8) 21.2 12.4 12.4 Balance at December 31, 2012 122.2 (32.7) $ 1.2 $ 1,016.1 $ (13.0) $ (364.1) $ (11.1) $ 629.1 $ 2.3 $ 631.4 Net income (loss) 243.8 243.8 (1.1) 242.7 Other comprehensive income (3.7) (3.7) (3.7) Noncontrolling interest activity 0.5 0.5 Shares issued in connection with acquisitions 10.0 136.6 117.2 253.8 253.8 Cash dividends declared (5.4) (19.2) (24.6) (24.6) Repurchase of common shares (5.0) (131.6) (131.6) (131.6) Stock-based compensation and exercise of awards 0.6 2.5 7.5 10.0 10.0 Balance at December 31, 2013 122.2 (27.1) $ 1.2 $ 1,149.8 $ 211.6 $ (371.0) $ (14.8) $ 976.8 $ 1.7 $ 978.5 The accompanying notes to the consolidated financial statements are an integral part of these statements. 48 POLYONE CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS Note 1 — DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Description of Business We are a premier provider of specialized polymer materials, services and solutions with operations in specialty polymer formulations, color and additive systems, plastic sheet and packaging solutions, and polymer distribution.

Rademacher 61 Senior Vice President, President of Distribution (Retiring effective April 1, 2012) Kurt Schuering 48 Senior Vice President, President of Distribution Robert M. P O L Y O N E C O R P O R A T I O N 48 The fair values of pension plan assets at December 31, 2011 and 2010, by asset category, are as follows: Fair Value of Plan Assets at December 31, 2011 Fair Value of Plan Assets at December 31, 2010 (In millions) Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Asset category Cash and cash equivalents $ 16.7 $ — $— $ 16.7 $ 17.0 $ — $ — $ 17.0 Large cap equity funds 27.0 17.0 — 44.0 28.5 16.8 — 45.3 Mid cap equity funds 36.4 — — 36.4 38.5 — — 38.5 Small cap equity funds 34.1 — — 34.1 36.0 — — 36.0 Global equity funds 50.9 54.2 — 105.1 58.1 59.2 — 117.3 Non-US equity funds 10.5 — — 10.5 12.6 — — 12.6 Fixed income funds 24.4 — — 24.4 39.5 — — 39.5 Multi-asset mutual fund 32.4 — — 32.4 25.2 — — 25.2 Floating rate income fund 32.0 — — 32.0 21.9 — — 21.9 Fund of hedge funds — — — — — — 1.3 1.3 Total plan assets $264.4 $71.2 $— $335.6 $277.3 $76.0 $1.3 $354.6 Large cap equity funds invest in primarily U.S. publicly-traded equity securities of companies with a market capitalization typically in excess of $10 billion with a focus on growth or value.

FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA Index to Financial Statements Page Management’s Report 40 Reports of Independent Registered Public Accounting Firm 41-42 Consolidated Financial Statements: Consolidated Statements of Income 43 Consolidated Statements of Comprehensive Income 44 Consolidated Balance Sheets 45 Consolidated Statements of Cash Flows 46 Consolidated Statements of Shareholders’ Equity 47 Notes to Consolidated Financial Statements 48-78 POLYONE CORPORATION 39 MANAGEMENT’S REPORT The management of PolyOne Corporation is responsible for preparing the consolidated financial statements and disclosures included in this Annual Report on Form 10-K. Reclassifications Certain reclassifications of the prior period amounts and presentation have been made to conform to the presentation for the current period. 48 POLYONE CORPORATION Use of Estimates Preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions in certain circumstances that affect amounts reported in the accompanying consolidated financial statements and notes.

The tally sheets provide information regarding each Named Executive Officff er’s base salary, annual incentives, and long-term incentives, and are reviewed by the Consultant. 48 COMPENSATION DISCUSSION AND ANALYSIS Annually, the CEO recommends, forff the Compensation Committee’s review and approval, specific base salary and incentive target opportunity adjustments for the Named Executive Officff ers other than himself, if an adjustment is warranted.