Robert W. Harrison - 13 Mar 2026 Form 4 Insider Report for CLEAN HARBORS INC (CLH)

Reporting relationship: EVP, EHS
Issuer ticker: CLH
Reported as of: 13 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 17 Mar 2026, 15:11:30 UTC
Prior SEC filing: 03 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Robert W. Harrison

Key filing fact

Robert W. Harrison filed Form 4 for CLEAN HARBORS INC (CLH) on 17 Mar 2026.

Key facts

This page summarizes Robert W. Harrison's Form 4 filing for CLEAN HARBORS INC (CLH).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 17 Mar 2026, 15:11.

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 0001954916 Primary reporting owner

Harrison Robert W.

Relationship: EVP, EHS
Address: 42 LONGWATER DR, NORWELL
Signature: /s/ Robert W. Harrison
Signature date: 17 Mar 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: -18
Change %: -0.26%
Price: $288.93^*
Shares after: 7,016
Date: 13 Mar 2026
Ownership: Direct
Footnotes: F1

CLH transaction

Common Stock

Disposed to Issuer

Transaction value
Shares: -368
Change %: -5.2%
Price: $0.000000^*
Shares after: 6,648
Date: 13 Mar 2026
Ownership: Direct
Footnotes: 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

Shares of restricted stock forfeited due to the Company not achieving performance targets under its Long Term Equity Incentive Program.

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