On December 27, 2023, Clean Harbors, Inc. entered into a Fourth Amendment to the Credit Agreement, dated as of June 30, 2017, among the Company, the subsidiaries of the Company identified therein and Goldman Sachs Lending Partners LLC, as administrative agent and collateral agent, and the lenders party thereto (such Credit Agreement, as previously amended and further amended by the Fourth Amendment, the ?Credit Agreement?). The Fourth Amendment (i) reduces the applicable interest rate margin for the Company?s 2021 Incremental Term Loans outstanding under the Credit Agreement by 25 basis points for both Term SOFR borrowings and base rate borrowings, and (ii) resets the six month soft call period for a repricing of the 2021 Incremental Term Loans (other than the repricing which resulted from the Fourth Amendment). After giving effect to the repricing, the applicable interest rate margins for the 2021 Incremental Term Loans are 1.75% for Term SOFR borrowings and 0.75% for base rate borrowings.