Company: CLH
Filing Date: 2025-10-29
Form Type: 10-Q
Source: 0000822818-25-000040
Chunk: 30

Company: CLEAN HARBORS INC
Filing Date: 2025-10-29
Form: 10-Q
Item: Part I, Item 1
Chunk 30
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 Field and Emergency Response Services690,755 — — 690,755 Safety-Kleen Environmental Services768,488 213,965 — 982,453 Safety-Kleen Oil— 461,313 — 461,313 Total third-party revenues$3,855,677 $675,278 $186 $4,531,141 Nine Months Ended September 30, 2024Environmental ServicesSafety-Kleen Sustainability SolutionsCorporateTotalPrimary Geographical MarketsUnited States$3,395,446 $645,664 $297 $4,041,407 Canada350,781 66,648 — 417,429 Total third-party revenues$3,746,227 $712,312 $297 $4,458,836 Sources of RevenueTechnical Services$1,288,339 $— $— $1,288,339 Industrial Services1,064,441 — 297 1,064,738 Field and Emergency Response Services676,562 — — 676,562 Safety-Kleen Environmental Services716,885 171,117 — 888,002 Safety-Kleen Oil— 541,195 — 541,195 Total third-party revenues$3,746,227 $712,312 $297 $4,458,836 

10

Contract Balances(in thousands)September 30, 2025December 31, 2024Receivables$1,104,805 $1,015,357 Contract assets (unbilled receivables)182,059 162,215 Contract liabilities (deferred revenue)91,966 88,545 The timing of revenue recognition, billings and cash collections results in billed accounts receivable, unbilled receivables (contract assets) and customer advances and deposits, or deferred revenue (contract liabilities), on the consolidated balance sheet. Generally, billing occurs subsequent to revenue recognition, as a right to payment is not just subject to passage of time, resulting in contract assets, which are generally classified as current. The Company sometimes receives advances or deposits from its customers before revenue is recognized, resulting in contract liabilities. These assets and liabilities are reported on the consolidated balance sheet on a contract-by-contract basis at the end of each reporting period. The contract liability balances at the beginning of each period presented are generally fully recognized in the subsequent three-month period.

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