Robert W. Harrison

CIK: 0001954916

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)4 (33.3%)

Compensation grants

Other (G, F, J, C, D, …)8 (66.7%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

CLH

CLEAN HARBORS INC

Officer

Discretionary Trading P&L

Holdings

Transaction History (12 total)

CLH
CLEAN HARBORS INC
Mar 13, 2026
Disposition(D)
Direct
368 shares-
CLH
CLEAN HARBORS INC
Mar 13, 2026
Tax Payment(F)
Direct
18 shares at avg. $288.93$5K
CLH
CLEAN HARBORS INC
Feb 2, 2026
Tax Payment(F)
Direct
184 shares at avg. $259.91$48K
CLH
CLEAN HARBORS INC
Feb 1, 2026
Award(A)
Direct
430 shares-
CLH
CLEAN HARBORS INC
Feb 1, 2026
Award(A)
Direct
1K shares-
CLH
CLEAN HARBORS INC
Dec 15, 2025
Tax Payment(F)
Direct
16 shares at avg. $240.71$4K
CLH
CLEAN HARBORS INC
Dec 1, 2025
Tax Payment(F)
Direct
122 shares at avg. $228.54$28K
CLH
CLEAN HARBORS INC
Mar 17, 2025
Tax Payment(F)
Direct
35 shares at avg. $192.90$7K
CLH
CLEAN HARBORS INC
Feb 1, 2025
Award(A)
Direct
1K shares-
CLH
CLEAN HARBORS INC
Feb 1, 2025
Award(A)
Direct
443 shares-
CLH
CLEAN HARBORS INC
Dec 15, 2024
Tax Payment(F)
Direct
28 shares at avg. $244.28$7K
CLH
CLEAN HARBORS INC
Dec 1, 2024
Tax Payment(F)
Direct
122 shares at avg. $260.09$32K

		Type	Shares	Price		Ownership
Mar 13, 2026	CLH CLEAN HARBORS INC	Disposition(D)	368	-	$0	Direct
Mar 13, 2026	CLH CLEAN HARBORS INC	Tax Payment(F)	18	$288.93	$5,201	Direct
Feb 2, 2026	CLH CLEAN HARBORS INC	Tax Payment(F)	184	$259.91	$47,823	Direct
Feb 1, 2026	CLH CLEAN HARBORS INC	Award(A)	430	-	$0	Direct
Feb 1, 2026	CLH CLEAN HARBORS INC	Award(A)	1,003	-	$0	Direct
Dec 15, 2025	CLH CLEAN HARBORS INC	Tax Payment(F)	16	$240.71	$3,851	Direct
Dec 1, 2025	CLH CLEAN HARBORS INC	Tax Payment(F)	122	$228.54	$27,882	Direct
Mar 17, 2025	CLH CLEAN HARBORS INC	Tax Payment(F)	35	$192.90	$6,752	Direct
Feb 1, 2025	CLH CLEAN HARBORS INC	Award(A)	1,033	-	-	Direct
Feb 1, 2025	CLH CLEAN HARBORS INC	Award(A)	443	-	-	Direct
Dec 15, 2024	CLH CLEAN HARBORS INC	Tax Payment(F)	28	$244.28	$6,840	Direct
Dec 1, 2024	CLH CLEAN HARBORS INC	Tax Payment(F)	122	$260.09	$31,731	Direct

1-12 of 12 transactions

About Harrison Robert W.

Harrison Robert W. (SEC CIK 0001954916) files insider reports with the SEC as EVP, EHS of CLEAN HARBORS INC (CLH).

Signal8 holds 8 ownership filings by Harrison Robert W., all Form 4s, filed between Dec 2, 2024 and Mar 17, 2026. Those filings report 12 transactions, from Dec 1, 2024 to Mar 13, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Harrison Robert W.'s filings is in NORWELL, MA.

Recent filings by Harrison Robert W.

Mar 13, 2026: Disposition to issuer transaction of CLH shares (Form 4, code D).
Mar 13, 2026: Tax withholding of CLH shares (Form 4, code F).
Feb 2, 2026: Tax withholding of CLH shares (Form 4, code F).
Feb 1, 2026: Grants or awards of CLH shares (2 lines, Form 4, code A).
Dec 15, 2025: Tax withholding of CLH shares (Form 4, code F).

Other insiders filing for CLEAN HARBORS INC (CLH)

Geer Charles H. II, EVP, Industrial Services
Polito Karyn, Director
GERSTENBERG ERIC W, CO-CEO
Dugas Eric J., EVP CHIEF FINANCIAL OFFICER
Battles Michael Louis, CO-CEO
CURTIS GEORGE L, EXEC. VICE PRESIDENT (CHESI)

How to read Form 4 transaction codes