Clean Harbors, Inc. Watch

from 8-K 2 pages 42 Longwater Drive P.O. Box 9149 Norwell, Ma 02061-9149 February 24, 2023 Base Salary Your Base Compensation Will Be at the Rate of $550,000.00 Annually ($22,916.66 Paid Semi-Monthly). Annual Incentive Long-Term Incentive

from 8-K 2 pages 42 Longwater Drive P.O. Box 9149 Norwell, Ma 02061-9149 February 24, 2023 Base Salary Your Base Compensation Will Be at the Rate of $425,000.00 Annually ($17,708.33 Paid Semi-Monthly). Annual Incentive Long-Term Incentive

from 8-K 3 pages The Board of Directors of Clean Harbors, Inc. (Which, Together With Its Subsidiaries and Affiliated Companies, Is Collectively Referred to Below as the “Company”) Is Pleased to Offer You, Effective as of March 31, 2023 (The “Effective Date”), the Position of Executive Chairman of the Board and Chief Technology Officer, Reporting Directly to the Board. This Position Will Continue to Be Based in Our Norwell, Ma Headquarters. the Terms Set Forth in This Offer Will Become Effective on March 31, 2023, Provided You Accept This Offer and Continue to Be Employed by the Company Prior to the Effective Date in Your Current Office as Chairman of the Board, President and Chief Executive Officer. Base Salary: Your Base Salary Will Be at the Rate of $900,000.00 Annually ($37,500.00 Paid Semi-Monthly). Short-Term Incentive

from 8-K 17 pages Severance Agreement

from 8-K 4 pages The Board of Directors of Clean Harbors, Inc. (Which, Together With Its Subsidiaries and Affiliated Companies, Is Collectively Referred to Below as the “Company”) Is Pleased to Offer You, Effective as of March 31, 2023 (The “Effective Date”), the Position of Co-Chief Executive Officer and Co-President, Reporting Directly to the Board. You Will Serve in That Capacity Along With Mike Battles, Who Will Share the Same Titles, Authorities and Responsibilities as Described in the Company’s By-Laws and Massachusetts Law, Subject to Periodic Review by the Board of Directors. This Position Will Continue to Be Based in Our Norwell, Ma Headquarters. the Terms Set Forth in This Offer Will Become Effective on March 31, 2023, Provided You Accept This Offer and Continue to Be Employed by the Company Prior to the Effective Date in Your Current Office as Executive Vice President and Chief Operating Officer. Base Salary: Your Base Salary Will Be at the Rate of $900,000.00 Annually ($37,500.00 Paid Semi-Monthly). Short-Term Incentive

from 8-K 17 pages Severance Agreement

from 8-K 4 pages The Board of Directors of Clean Harbors, Inc. (Which, Together With Its Subsidiaries and Affiliated Companies, Is Collectively Referred to Below as the “Company”) Is Pleased to Offer You, Effective as of March 31, 2023 (The “Effective Date”), the Position of Co-Chief Executive Officer and Co-President, Reporting Directly to the Board. You Will Serve in That Capacity Along With Eric Gerstenberg, Who Will Share the Same Titles, Authorities and Responsibilities as Described in the Company’s By-Laws and Massachusetts Law, Subject to Periodic Review by the Board of Directors. This Position Will Continue to Be Based in Our Norwell, Ma Headquarters. the Terms Set Forth in This Offer Will Become Effective on March 31, 2023, Provided You Accept This Offer and Continue to Be Employed by the Company Prior to the Effective Date in Your Current Office as Executive Vice President, Finance and Chief Financial Officer. Base Salary: Your Base Salary Will Be at the Rate of $900,000.00 Annually ($37,500.00 Paid Semi-Monthly). Short-Term Incentive

from 8-K 7 pages Clean Harbors, Inc. Performance-Based Restricted Stock Award Agreement [2020 Stock Incentive Plan]

from 8-K 5 pages Clean Harbors, Inc. Time-Vesting Restricted Stock Award Agreement [2020 Stock Incentive Plan]

from 8-K 5 pages Clean Harbors, Inc. Restricted Stock Award Agreement [Non-Employee Director, 2020 Stock Incentive Plan]

from 8-K 2 pages 42 Longwater Drive P.O. Box 9149 Norwell, Ma 02061-9149 January 6, 2016 Base Salary: Your Base Compensation Will Be at the Rate of $385,000.00 Annually, ($16,041.67 Paid Semi-Monthly). Short-Term Incentive: Long-Term Incentive

from 8-K 3 pages Long Term Incentive

from 8-K 3 pages You Will Be Eligible to Participate in the Company’s Management Incentive Program (“Mip”), With a Bonus Opportunity of Up to 120% of Your Base Salary. the Mip Program Is Based on Annual Achievement of the Company’s EBITDA Targets. You Will Also Be Eligible to Participate in the Senior Executive Incentive Plan (“Seip”), With a Bonus Opportunity of Up to 30% of Your Base Salary. the Seip Is Based on Achievement of Individual Goals Set by You, Jim, and Alan. the Short Term Incentive Bonus Programs Will Be Pro-Rated for the First Year Based on Your Date of Hire. These Programs Are Subject to Annual Review and Approval by the Compensation Committee of the Board of Directors. Long Term Incentive

from 10-K 8 pages Clean Harbors, Inc. Performance-Based Restricted Stock Award Agreement Performance-Based Restricted Stock Agreement

from 10-K 6 pages Clean Harbors, Inc. Restricted Stock Award Agreement [Employee]

from 10-K 6 pages Clean Harbors, Inc. Restricted Stock Award Agreement [Non-Employee Director]

from 10-K 7 pages Severance Agreement

from 10-Q 7 pages Clean Harbors, Inc. Performance-Based Restricted Stock Award Agreement

from 10-Q 6 pages Clean Harbors, Inc. Restricted Stock Award Agreement [Employee]

from 8-K 6 pages Clean Harbors, Inc. Restricted Stock Award Agreement [Non-Employee Director]