[Form 4] Clean Harbors, Inc Insider Trading Activity

Rhea-AI Filing Summary

Context: Director Andrea Robertson filed a Form 4 for Clean Harbors (CLH) on 08/06/2025 covering activity dated 08/05/2025.

Transaction: Robertson transferred 430 CLH common shares as a charitable gift (transaction code G) at a reported price of $0. After the disposition she still owns 9,458 shares directly. No derivative securities were involved.

Significance: The gift equates to roughly 4 % of her personal stake and is immaterial versus Clean Harbors’ roughly 56 million shares outstanding. Because the shares were neither bought nor sold for value, the filing carries neutral informational weight and does not alter the company’s fundamentals or insider sentiment trajectory.

Insights

Equity Analyst

TL;DR — Small charitable gift; no valuation impact.

The disposition is a routine philanthropic transfer by a board member, representing only a few hundred shares. Such gifts typically do not imply changing confidence or liquidity needs. With ownership remaining above 9 k shares and no pricing component, I view the event as neutral to investor sentiment. No change to earnings outlook, capital structure, or governance.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Robertson Andrea

(Last) (First) (Middle)

150 OCEAN LANE DRIVE, APT 3E

(Street)

KEY BISCAYNE FL 33149

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
CLEAN HARBORS INC [ CLH ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
08/05/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/05/2025		G(1)		430	D	$0	9,458	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Charitable gift.

	/s/ Andrea Robertson	08/06/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did CLH disclose on the latest Form 4?

Director Andrea Robertson gifted 430 common shares on 08/05/2025.

How many Clean Harbors shares does the director own after the gift?

Robertson’s direct holding stands at 9,458 shares.

Was the transaction a purchase or sale of CLH stock?

Neither. It was coded “G” for a charitable gift, priced at $0.

Does this Form 4 indicate any change in Clean Harbors’ fundamentals?

No. The transfer is personal and does not affect company operations or outlook.

Is the gift size material relative to Clean Harbors’ share count?

No. 430 shares are immaterial against roughly 56 million shares outstanding.