[Form 4] Clean Harbors, Inc Insider Trading Activity

Rhea-AI Filing Summary

Clean Harbors, Inc. (CLH) Form 4: Co-CEO & Director Michael L. Battles bought 2,000 common shares on 08/01/2025 at $233.50 per share, a cash outlay of roughly $467k. His direct holdings rose to 82,911 shares. No derivative transactions were reported. The filing was submitted individually and signed on 08/04/2025.

Positive

• Open-market insider purchase: Co-CEO bought 2,000 shares for about $467k, indicating personal confidence in CLH stock and aligning interests with shareholders.

Negative

• None.

Insights

Financial Analyst

TL;DR — Insider purchase signals executive confidence; dollar amount modest but directionally positive.

Form 4 shows Michael Battles, Co-CEO and Director, acquiring 2,000 CLH shares at $233.50, taking his stake to 82,911 shares. While the ~$467k purchase is small relative to Clean Harbors’ multi-billion market cap, insider open-market buying is generally viewed favorably because it aligns management’s interests with shareholders and may hint at a constructive outlook. Lack of sales or derivative activity removes dilution concerns. Overall impact: slightly positive.

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^*

Battles Michael Louis

(Last) (First) (Middle)

42 LONGWATER DRIVE

(Street)

NORWELL MA 02061

(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
X	Officer (give title below)		Other (specify below)
	CO-CEO

3. Date of Earliest Transaction (Month/Day/Year)
08/01/2025

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	08/01/2025		P		2,000	A	$233.5	82,911	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:

	/s/ Michael Battles	08/04/2025
	** 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

How many CLH shares did Co-CEO Michael Battles buy?

He purchased 2,000 common shares on 08/01/2025.

What was the purchase price per share?

The shares were bought at $233.50 each.

What is Michael Battles’ total direct ownership after the transaction?

His direct holdings increased to 82,911 CLH shares.

Were any derivative securities involved in this Form 4?

No. The filing reports only the common-stock purchase and lists no derivative transactions.

Does this filing indicate a sale or a purchase?

It indicates an open-market purchase (Code "P") of CLH common stock.