NOTICE OF 2020 ANNUAL MEETING OF SHAREHOLDERS AND PROXY STATEMENT PolyOne Corporation PROPOSAL 1 — ELECTION OF BOARD OF DIRECTORS ............................................................................................................ 11 PROPOSAL 2 — ADVISORY VOTE TO APPROVE NAMED EXECUTIVE OFFICER COMPENSATION ............................ 16 PROPOSAL 3 — APPROVAL OF THE POLYONE CORPORATION 2020 EQUITY AND INCENTIVE COMPENSATION PLAN .........................................................................................................................................17 PROPOSAL 4 — RATIFICATION OF APPOINTMENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM ................................................................................................................................................30 MESSAGE FROM OUR CEO Your vote is very important. PROPOSAL 3 — APPROVAL OF THE POLYONE CORPORATION 2020 EQUITY AND INCENTIVE COMPENSATION PLAN General Why We Recommend That You Vote for this Proposaly p Our Board recommends a vote FOR this Proposal to approve the PolyOne Corporation 2020 Equity and Incentive Compensation Plan. 2020 Plan Highlights g g Administration Reasonable 2020 Plan Limits Allowances for Conversion Awards and Assumed Plans Limited Share Recycling Provisions Minimum Vesting No Repricing Without Shareholder Approval Change of Control Definition Exercise or Base Price Limitation. Rathbun Company Contributions to PolyOne Supplemental Retirement Benefit Plan.

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w.e.f.02/08/2021) Former Name if any : POLYONE SINGAPORE PTE LTD Incorporation Date. : 14/12/1990 Company Type : PRIVATE COMPANY LIMITED BY SHARES Status : Live Company Status Date : 14/12/1990 Principal Activities Activities (I) WHOLESALE TRADE OF A VARIETY OF GOODS WITHOUT A DOMINANT PRODUCT (46900) : IMPORT/EXPORT AND SALES OF POLYMERS Description : Activities (II) : Description Capital CurrencyIssued Share Capital Share TypeNumber of Shares * (AMOUNT) 694600 SINGAPORE, DOLLARS ORDINARY694600 7200000 UNITED STATES OF AMERICA, DOLLARS ORDINARY7200000 * Number of Shares includes number of Treasury Shares CurrencyPaid-Up Capital Share TypeNumber of Shares (AMOUNT) 694600 SINGAPORE, DOLLARS ORDINARY 7200000 UNITED STATES OF AMERICA, DOLLARS ORDINARY Page 1 of 4 Number Of Shares Currency COMPANY HAS THE FOLLOWING ORDINARY SHARES HELD AS TREASURY SHARES Registered Office Address 3 INTERNATIONAL BUSINESS PARK #04-14/15 NORDIC EUROPEAN CENTRE SINGAPORE (609927) Date of Address 16/08/2020: Date of Last AGM : 29/08/2020 Date of Last AR : 26/10/2020 FYE As At Date of Last AR : 31/12/2019 Audit Firms NAME ERNST & YOUNG LLP Amount Secured Chargee(s) Charges CurrencyCharge No. Date Registered ID Officers/Authorised Representative(s) Position Held Nationality/CitizenshipName Date of Appointment XU TAO EB6238077 CHINESE 30/06/2021ACRA DirectorROOM 102, BUILDING 20, SUB LANE 7, LANE 888, LUOJIN ROAD SHANGHAI, 201104, CHINA CHAN BAI RONG S8534833G SINGAPORE CITIZEN 30/06/2021ACRA Director10A BENDEMEER ROAD #26-103 BENDEMEER LIGHT SINGAPORE (331010) LEE SAY ENG A52290094 MALAYSIAN 30/06/2021ACRA Page 2 of 4 ID Officers/Authorised Representative(s) Position Held Nationality/CitizenshipName Date of Appointment Director168 JINAN ROAD, BUILDING 10, ROOM 802, SHANGHAI CHINA 200021 CHAN LAI YIN S7480587F MALAYSIAN 28/06/2010ACRA Secretary26 SIMEI STREET 1 #11-08 MELVILLE PARK SINGAPORE (529947) LEE WEI HSIUNG S7927166G SINGAPORE CITIZEN 01/12/2009ACRA Secretary633 JURONG WEST STREET 65 #10-310 SINGAPORE (640633) Shareholder(s) Name ID Nationality/Citizenship Place of incorporation/ Origin/Registration Address Changed AVIENT CORPORATION T05UF0103G UNITED STATES OF AMERICA ACRA1 33587 WALKER ROAD, AVON LAKE, OHIO 44012, UNITED STATES OF AMERICA Ordinary(Number) Currency 694600 SINGAPORE, DOLLARS Ordinary(Number) Currency 7200000 UNITED STATES OF AMERICA, DOLLARS Page 3 of 4 Abbreviation UL - Local Entity not registered with ACRA UF - Foreign Entity not registered with ACRA AR - Annual Return AGM - Annual General Meeting FS - Financial Statements OSCARS - One Stop Change of Address Reporting Service by Immigration & Checkpoint Authority.

PolyOne engineered composite panels can be tailored to your design and performance specifications. Benefits include: • Superior strength-to-weight ratio • Resistance to ultraviolet (UV) light and chemicals • Resistance to moisture degradation and rot • Impact strength • Vibration damping and acoustic insulation • Thermal insulation • Nearly unlimited lengths, widths up to 10 feet, and thicknesses customized to the application Composite Sandwich Panels for Marine Applications 1.866.POLYONE www.polyone.com Copyright © 2016, PolyOne Corporation. PolyOne makes no warranties or guarantees respecting suitability of either PolyOne’s products or the information for your process or end-use application.

Polyone terms and conditions of sale France - updated September 2009 - 1 - PAI-376900v1 TERMS AND CONDITIONS OF SALE The Terms and Conditions herein apply to the sale of PolyOne products 1. Seller shall replace, free of charge, any Products which do not conform to these specifications in one or several deliveries. All late payments shall bear an annual interest of one (1) month EURIBOR plus 8% accrued on a daily basis, notwithstanding any damages.

www.polyone.com Copyright © 2016, PolyOne Corporation. PolyOne makes no warranties or guarantees respecting suitability of either PolyOne’s products or the information for your process or end-use application. PolyOne conducted a comparative study of polymer resistance to three common, harsh disinfectant chemistries.

Platform operating income mix percentage 2005Y 2008Y 2011Y Global Specialty Engineered Materials $ 0.4 $ 17.6 $ 45.9 Global Color, Additives and Inks 4.3 28.1 43.4 Specialty Platform $ 4.7 $ 45.7 $ 89.3 Performance Products and Solutions 75.7 31.3 62.4 Distribution 19.5 28.1 56.0 SunBelt Joint Venture 91.9 28.6 5.0 Corporate (51.5) (425.1) 20.3 Operating income (loss) GAAP $ 140.3 $ (291.4) $ 233.0 Less: Corporate operating expense (income) 51.5 425.1 (20.3) Operating income excluding Corporate $ 191.8 $ 133.7 $ 212.7 Specialty platform operating mix percentage 2% 34% 42% Pro forma platform operating income mix percentage 2007 Pro forma 2011Y Specialty Platform $ 30.6 $ 89.3 Pro forma ColorMatrix - 27.7 Specialty Platform pro forma ColorMatrix $ 30.6 $ 117.0 Performance Products and Solutions 65.8 62.4 Distribution 22.1 56.0 SunBelt Joint Venture 34.8 5.0 Corporate (73.3) 20.3 Operating income pro forma ColorMatrix $ 80.0 $ 260.7 Less: Corporate and SunBelt operating income 73.3 (25.3) Operating income excluding Corporate operating income $ 153.3 $ 235.4 Specialty platform operating mix percentage 20% 50% Adjusted EPS 2006Y 2007Y 2008Y 2009Y 2010Y 2011Y Net Income $ 130.9 $ 40.9 $ (417.0) $ 106.7 $ 162.6 $ 172.6 SunBelt and OxyVinyls 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) Tax adjustments (30.0) (30.7) 147.2 (44.9) (88.3) (42.3) Adjusted net income $ 11.2 $ 25.5 $ 19.4 $ 11.8 $ 75.4 $ 96.1 Diluted shares 92.8 93.1 92.7 93.4 96.0 94.3 Adjusted EPS $ 0.12 $ 0.27 $ 0.21 $ 0.13 $ 0.79 $ 1.02 Adjusted EPS Q1 2011 Q1 2012 Net Income $ 110.2 $ 20.2 SunBelt equity earnings, after tax (3.7) - Special items, after tax (79.8) 6.1 Tax adjustments (1.5) 0.1 Adjusted net income $ 25.2 $ 26.4 Diluted shares 96.4 90.7 Adjusted EPS $ 0.26 $ 0.29 Platform sales and operating income (OI) 2005 2006 2007 2008 2009 2010 2011 Global Specialty Engineered Materials Sales $ 282.5 $ 345.3 $ 384.4 $ 514.0 $ 402.9 $ 517.4 $ 575.1 Global Color, Additives and Inks Sales 503.7 531.8 560.5 554.3 459.8 527.4 544.6 Specialty Platform Sales $ 786.2 $ 877.1 $ 944.9 $ 1,068.3 $ 862.7 $ 1,044.8 $ 1,119.7 Performance Products and Solutions Sales 1,136.3 1,166.2 1,086.8 1,001.4 667.7 776.3 865.4 PolyOne Distribution Sales 679.2 732.8 744.3 796.7 625.1 911.9 996.5 Corporate and Eliminations (151.1) (153.7) (133.3) (127.7) (94.8) (111.1) (118.1) Total Sales $ 2,450.6 $ 2,622.4 $ 2,642.7 $ 2,738.7 $ 2,060.7 $ 2,621.9 $ 2,863.5 Pro forma ColorMatrix Sales 196.0 Total sales pro forma ColorMatrix $ 3,059.5 Global Specialty Engineered Materials OI $ 0.4 $ 3.9 $ 4.9 $ 17.6 $ 20.6 $ 49.7 $ 45.9 Global Color, Additives and Inks OI 4.3 8.9 25.7 28.1 25.2 37.7 43.4 Specialty Platform OI $ 4.7 $ 12.8 $ 30.6 $ 45.7 $ 45.8 $ 87.4 $ 89.3 Performance Products and Solutions OI 75.7 64.2 65.8 31.3 33.1 54.0 62.4 PolyOne Distribution OI 19.5 19.2 22.1 28.1 24.8 42.0 56.0 Sunbelt Joint Venture OI 91.9 102.9 34.8 28.6 25.5 18.9 5.0 Corporate and eliminations (21.8) (4.6) (25.5) (28.9) (40.8) (32.5) (26.4) Special items (29.7) 39.1 (47.8) (396.2) 48.7 4.8 46.7 Operating income (loss) GAAP $ 140.3 $ 233.6 $ 80.0 $ (291.4) $ 137.1 $ 174.6 $ 233.0 Sunbelt equity income (72.5) (107.0) (40.8) (32.5) (29.7) (23.1) (5.7) Special items 29.7 (39.1) 47.8 396.2 (48.7) (4.8) (46.7) Operating income adjusted $ 97.5 $ 87.5 $ 87.0 $ 72.3 $ 58.7 $ 146.7 $ 180.6 Operating income pro forma ColorMatrix 27.7 Operating income adjusted pro forma ColorMatrix $ 208.3 Global Specialty Engineered Materials - OI as a percentage of sales 0.1% 1.1% 1.3% 3.4% 5.1% 9.6% 8.0% Global Color, Additives and Inks - OI as a percentage of sales 0.9% 1.7% 4.6% 5.1% 5.5% 7.1% 8.0% Specialty platform OI as a percentage of sales 0.6% 1.5% 3.2% 4.3% 5.3% 8.4% 8.0% Specialty platform OI as a percentage of sales - pro forma ColorMatrix 8.9% Global Color, Additives and Inks OI as a percentage of sales – pro forma ColorMatrix 9.6% PP&S operating OI as a percentage of sales 6.7% 5.5% 6.1% 3.1% 5.0% 7.0% 7.2% Distribution OI as a percentage of sales 2.9% 2.6% 3.0% 3.5% 4.0% 4.6% 5.6% PolyOne OI adjusted, as a percentage of sales 4.0% 3.3% 3.3% 2.6% 2.8% 5.6% 6.3% PolyOne OI adjusted, pro forma for ColorMatrix, as a percent of sales 6.8% Operating income (OI) Q1 2011 Q1 2012 Global Specialty Engineered Materials OI $ 14.0 $ 11.8 Global Color, Additives and Inks OI 11.2 17.3 Specialty Platform OI $ 25.2 $ 29.1 Performance Products and Solutions OI 14.3 17.8 PolyOne Distribution OI 14.7 16.7 Corporate and eliminations (1.6) (10.2) Special items 127.2 (8.5) Operating income (loss) GAAP $ 179.8 $ 44.9 Research and Development (R&D) – Pro forma ColorMatrix 2011 PolyOne R&D $ 36.9 ColorMatrix R&D 3.6 Pro forma R&D $ 40.5 Gross Margin as a percentage of Sales 2006 2011 2011 Pro forma ColorMatrix Specialty platform sales $ 877.1 $ 1,119.7 $ 1,315.7 Specialty platform gross margin 125.2 263.4 345.9 Specialty platform gross margin percentage 14.3 % 23.5 % 26.3 % Average Debt Q4 2010 Q1 2011 Q2 2011 Q3 2011 Q4 2011 Average PolyOne Debt $ 452.9 $ 432.9 $ 432.9 $ 432.9 $ 707.0 n/a Pro forma ColorMatrix 274.1 274.1 274.1 274.1 - n/a Total Debt $ 727.0 $ 707.0 $ 707.0 $ 707.0 $ 707.0 $ 711.0 Average Equity Q4 2010 Q1 2011 Q2 2011 Q3 2011 Q4 2011 Average PolyOne $ 516.0 $ 615.2 $ 629.6 $ 608.5 $ 588.3 $ 591.5

Zoretich Senior Manager, Product Stewardship Phone: 440.930.1291 Fax: 440.930.3034 www.polyone.com brian.zoretich@polyone.com PolyOne Corporation is a global leader in innovative polymer materials, services and solutions. 33587 Walker Road, Avon Lake, Ohio USA 44012 April 2014 Dear Valued Customer, As part of PolyOne’s commitment to offer our customers the most value in a competitive global marketplace, we are making changes to our Material Safety Data Sheets (MSDSs) in order to meet the coming requirements of the Globally Harmonized System of Classification and Labeling of Chemicals (GHS). As a solution provider in the global marketplace, PolyOne must harmonize its own systems and capabilities in a timeframe to allow us to provide solutions globally. Sincerely, PolyOne Corporation Brian E.

WHO WE ARE – VISION, STRATEGY, CULTURE 3 Avient Corporation (NYSE: AVNT) provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. It’s in this spirit that we joined legacy PolyOne and the Clariant Masterbatch business, two complementary businesses, and formed a new one that we’ve named Avient. As one, we are better positioned than ever before to lead and to make a positive difference.

PDI) on extruded profiles 2 ASTM D-638 3 ASTM 256 4 ASTM D-648 66 psi, unannealed, 0.125" 5 Savings depends on profile size and production volume Acrylite is a registered trademark of Evonik Performance Materials Lens Performance Resilience™ LS Frost PVC Acrylite® Satinice Frost PMMA Light Transmission1 at 0.060" (1.5mm) 83% Low Diffusion 78% Medium Diffusion 75% High Diffusion 81% Low Diffusion Diffusion Half Power Angle (DLD) 26° Low Diffusion 41° Medium Diffusion 58° High Diffusion 26° Low Diffusion Tensile Strength2 Tensile Modulus2 Tensile Elongation (break)2 7,360 psi 400,000 psi 20% 7,330 psi 330,000 psi 43% Flammability (UL 94) V-0 @ 1.5mm 5VA @ 2.0mm HB @ 1.6mm Notched Izod Impact (73°F)3 2.3 ft-lb/in 0.6 ft-lb/in Heat Deflection Temperature4 157°F/69°C 182°F/83°C UV Stability Good Excellent Chemical Resistance Excellent Good Typical Lens Profile Cost 10–15% Savings5 Baseline 1.866.POLYONE www.polyone.com Copyright © 2018, PolyOne Corporation. PolyOne makes no warranties or guarantees respecting suitability of either PolyOne’s products or the information for your process or end-use application. POLYONE MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, either with respect to the information or products reflected by the information.