Jeroen Diderich - 01 Jun 2026 Form 4 Insider Report for CLEAN HARBORS INC (CLH)

Reporting relationship: EVP&President of Sales&Service
Issuer ticker: CLH
Reported as of: 01 Jun 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 03 Jun 2026, 15:35:59 UTC
Prior SEC filing: 03 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Jeroen Diderich

Key filing fact

Jeroen Diderich filed Form 4 for CLEAN HARBORS INC (CLH) on 03 Jun 2026.

Key facts

This page summarizes Jeroen Diderich's Form 4 filing for CLEAN HARBORS INC (CLH).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 03 Jun 2026, 15:35.

Change

Previous filing in this sequence was filed on 03 Feb 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002025402 Primary reporting owner

Diderich Jeroen

Relationship: EVP&President of Sales&Service
Address: C/O CLEAN HARBORS, INC., 42 LONGWATER DRIVE, NORWELL
Signature: /s/ Jeroen Diderich
Signature date: 03 Jun 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

CLH transaction

Common Stock

Tax liability

Transaction value
Shares: -1,717
Change %: -9.6%
Price: $281.00^*
Shares after: 16,152
Date: 01 Jun 2026
Ownership: Direct
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3

Footnote F2

Includes 14 shares acquired under the Clean Harbors Employee Stock Purchase Plan.

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