Robert W. Harrison - 01 Feb 2026 Form 4 Insider Report for CLEAN HARBORS INC (CLH)

Role
EVP, EHS
Signature
/s/ Robert W. Harrison
Issuer symbol
CLH
Transactions as of
01 Feb 2026
Net transactions value
-$47,823
Form type
4
Filing time
03 Feb 2026, 15:37:45 UTC
Previous filing
17 Dec 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Harrison Robert W. EVP, EHS 42 LONGWATER DR, NORWELL /s/ Robert W. Harrison 03 Feb 2026 0001954916

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CLH Common Stock Tax liability $47,823 -184 -3.2% $259.91 5,601 02 Feb 2026 Direct F1
transaction CLH Common Stock Award $0 +1,003 +18% $0.000000 6,604 01 Feb 2026 Direct F2
transaction CLH Common Stock Award $0 +430 +6.5% $0.000000 7,034 01 Feb 2026 Direct F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3.
F2 Performance-Based Restricted Stock Award that will vest 50% on 3/15/2028 and 50% on 3/15/2029, depending on achievement of certain goals during the performance period 1/1/2027 through 12/31/2027
F3 Restricted Stock Award vesting as to 25% on February 1, 2027; 25% on February 1, 2028; 25% on February 1, 2029; and 25% on February 1, 2030.