Cabot Microelectronics Corporation Human Resources Contracts & Agreements

Adoption Agreement, as amended January 1, 2022, of CMC Materials, Inc. Supplemental Employee Retirement Plan (Filed With SEC on February 3, 2022)

CMC Materials, Inc. Short Term Incentive Program (Filed With SEC on November 12, 2021)

Form of CMC Materials, Inc. 2021 Omnibus Incentive Plan Restricted Stock (Filed With SEC on November 12, 2021)

CMC Materials, Inc. 2021 Omnibus Incentive Plan (Filed With SEC on November 12, 2021)

Form of CMC Materials, Inc. 2021 Omnibus Incentive Plan Restricted Stock Unit Award Agreement (non-employee directors) (Filed With SEC on August 5, 2021)

Directors Deferred Compensation Plan, as Amended and Restated February 25, 2021 (Filed With SEC on May 6, 2021)

CMC Materials, Inc. Short Term Incentive Program (Filed With SEC on November 17, 2020)

CMC Materials, Inc. 2012 Omnibus Incentive Plan, as amended effective March 7, 2017 (Filed With SEC on November 17, 2020)

Directors' Cash Compensation Umbrella Program (Filed With SEC on November 17, 2020)

Directors' Deferred Compensation Plan, as amended September 23, 2008 (Filed With SEC on November 17, 2020)

Form of Cabot Microelectronics Corporation 2012 Omnibus Incentive Plan Performance Share Unit Award Agreement (employees (including executive officers)) (Filed With SEC on February 7, 2018)

Form of Cabot Microelectronics Corporation 2012 Omnibus Incentive Plan Restricted Stock Unit Award Agreement (employees (including executive officers)) (Filed With SEC on February 7, 2018)

Form of Cabot Microelectronics Corporation 2012 Omnibus Incentive Plan Non-Qualified Stock Option Award Agreement (employees (including executive officers)) (Filed With SEC on February 7, 2018)

CABOT MICROELECTRONICS CORPORATION 2012 OMNIBUS INCENTIVE PLAN (as amended effective March 7, 2017) (Filed With SEC on May 5, 2017)

Cabot Microelectronics Corporation 2012 Omnibus Incentive Plan Fiscal Year 20[__] Restricted Stock Unit Award Agreement for United States Employees (Filed With SEC on February 8, 2016)

CABOT MICROELECTRONICS CORPORATION SHORT TERM INCENTIVE PROGRAM (Filed With SEC on February 8, 2016)

Cabot Microelectronics Corporation 2012 Omnibus Incentive Plan Restricted Stock Award Agreement (United States Employees) (Filed With SEC on February 8, 2013)

Cabot Microelectronics Corporation 2012 Omnibus Incentive Plan Non-Qualified Stock Option Award Agreement (United States Employees) (Filed With SEC on February 8, 2013)

Cabot Microelectronics Corporation 2012 Omnibus Incentive Plan [calendar year] Deposit Share Agreement (Filed With SEC on February 8, 2013)

Cabot Microelectronics Corporation 2012 Omnibus Incentive Plan [Initial][Annual] Restricted Stock Unit Award Agreement for Directors (Filed With SEC on August 8, 2012)

Cabot Microelectronics Corporation 2012 Omnibus Incentive Plan [Initial][Annual] Non-Qualified Stock Option Award Agreement for Directors (Filed With SEC on August 8, 2012)

Cabot Microelectronics Corporation 2012 Omnibus Incentive Plan Restricted Stock Award Agreement (United States Employees) (Filed With SEC on August 8, 2012)

Cabot Microelectronics Corporation 2012 Omnibus Incentive Plan Non-Qualified Stock Option Grant Agreement (United States Employees) (Filed With SEC on August 8, 2012)

Second Amended and Restated Cabot Microelectronics Corporation 2000 Equity Incentive Plan Fiscal Year 2011 Annual Restricted Stock Units Award Agreement for Directors (Filed With SEC on May 9, 2011)

Second Amended and Restated Cabot Microelectronics Corporation 2000 Equity Incentive Plan Fiscal Year 2011 Annual Non-Qualified Stock Option Grant Agreement for Directors (Filed With SEC on May 9, 2011)

CABOT MICROELECTRONICS CORPORATION ANNUAL INCENTIVE AND SALES INCENTIVE PROGRAMS (Filed With SEC on February 8, 2011)

Non-Employee Directors Compensation Summary to be effective as of March 2011 (Filed With SEC on February 8, 2011)

Second Amended and Restated Cabot Microelectronics Corporation 2000 Equity Incentive Plan Non-Qualified Stock Option Grant Agreement (United States Employees) (Filed With SEC on February 8, 2011)

SecondAmended and Restated CabotMicroelectronics Corporation 2000 Equity Incentive Plan [Initial][Annual]Restricted Stock Units Award Agreement for Directors (Filed With SEC on May 7, 2010)

THE CORPORATEPLAN FOR RETIREMENTSM (ProfitSharing/401(k) Plan) AFidelity Prototype Plan Non-StandardizedAdoption Agreement No. 001 Foruse With FidelityBasic Plan Document No. 02... (Filed With SEC on August 7, 2009)

CABOTMICROELECTRONICS CORPORATION ANNUALINCENTIVE AND SALES INCENTIVE PROGRAMS (Filed With SEC on November 25, 2008)

FIRSTAMENDMENT TO THE EMPLOYMENT OFFER LETTERAGREEMENT (Filed With SEC on November 25, 2008)

FIRSTAMENDMENT TO THE OFFER OF EMPLOYMENT LETTERAGREEMENT (Filed With SEC on November 25, 2008)

CabotMicroelectronics Corporation AMENDED AND RESTATED CHANGEIN CONTROL SEVERANCE PROTECTIONAGREEMENT (Filed With SEC on November 25, 2008)

SecondAmended and Restated CabotMicroelectronics Corporation 2000 Equity Incentive Plan [Initial][Annual]Restricted Stock Award Agreement for Directors (Filed With SEC on November 25, 2008)

SecondAmended and Restated CabotMicroelectronics Corporation 2000 Equity Incentive Plan RestrictedStock Award Agreement (UnitedStates Employees) (Filed With SEC on November 25, 2008)

SECONDAMENDED AND RESTATED CABOT MICROELECTRONICSCORPORATION 2000 EQUITY INCENTIVE PLAN AS AMENDED ANDRESTATEDSEPTEMBER 23, 2008 (Filed With SEC on November 25, 2008)

Second Amended and Restated Cabot Microelectronics Corporation 2000 Equity Incentive Plan [Initial][Annual] Restricted Stock Award Agreement for Directors (Filed With SEC on May 9, 2007)

Non-Employee Directors Compensation Summary as of March 5, 2007 (Filed With SEC on March 8, 2007)

CABOT MICROELECTRONICS CORPORATION DIRECTORS DEFERRED COMPENSATION PLAN (Filed With SEC on November 29, 2006)

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Cabot Microelectronics Corporation Human Resources Contracts & Agreements