Clean Harbors CFO sells 2,788 shares of stock

Clean Harbors Inc. executive vice president and chief financial officer Eric J. Dugas reported a sale of 2,788 shares of common stock on 2026-02-20 at $281.31 per share in an open-market or private transaction.

Rhea-AI Filing Summary

Clean Harbors Inc. executive vice president and chief financial officer Eric J. Dugas reported a sale of 2,788 shares of common stock on 2026-02-20 at $281.31 per share in an open-market or private transaction. Following this transaction, he directly holds 20,021 shares of common stock. The amendment notes a correction to the total number of shares held after the transaction. The Rule 10b5-1 trading-plan checkbox was not marked as applicable.

Insider Trade Summary

Net Seller: 2,788 shares

Net Sell 1 txn

Insider Dugas Eric J.

Role EVP CHIEF FINANCIAL OFFICER

Sold 2,788 shs ($784K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1	2,788	$281.31	$784K

Holdings After Transaction: Common Stock — 20,021 shares (Direct)

Footnotes (1)

1. F1. Correction to Total Number of Shares Held.

Key Figures

Shares sold: 2,788 shares Sale price per share: $281.31 per share Shares held after transaction: 20,021 shares

3 metrics

Shares sold 2,788 shares Common stock sale by CFO Eric J. Dugas on 2026-02-20

Sale price per share $281.31 per share Price for the 2,788 common shares sold on 2026-02-20

Shares held after transaction 20,021 shares Direct holdings of Eric J. Dugas following the reported sale

Key Terms

Sale in open market or private transaction, Common Stock, Rule 10b5-1

3 terms

Sale in open market or private transaction regulatory

"transaction code description is “Sale in open market or private transaction”"

Common Stock financial

"security_title field lists the security as Common Stock"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

Rule 10b5-1 regulatory

"The Rule 10b5-1 trading-plan checkbox was not marked as applicable"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

FAQ

What insider transaction did Clean Harbors (CLH) report in this Form 4/A?

Clean Harbors reported that EVP and CFO Eric J. Dugas sold 2,788 shares of common stock on 2026-02-20 in an open-market or private transaction at $281.31 per share.

How many Clean Harbors (CLH) shares does CFO Eric J. Dugas hold after the sale?

After the reported sale, CFO Eric J. Dugas directly holds 20,021 shares of Clean Harbors common stock. The Form 4/A specifically notes a correction to the total number of shares held following the transaction.

Was the Clean Harbors (CLH) insider sale made under a Rule 10b5-1 trading plan?

The filing indicates the Rule 10b5-1 checkbox is not checked, meaning the reported 2,788-share sale by CFO Eric J. Dugas was not affirmed as being made under a Rule 10b5-1 trading plan.

What price did the Clean Harbors (CLH) insider receive per share in the sale?

CFO Eric J. Dugas sold 2,788 shares of Clean Harbors common stock at a price of $281.31 per share. The transaction is described as a sale in open market or private transaction.

Why is this Clean Harbors (CLH) Form 4 filing labeled as an amendment (4/A)?

The Form 4 is amended because it includes a footnote stating “Correction to Total Number of Shares Held.” The amendment updates the 20,021 shares shown as held after the transaction.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/14/2026 - 09:03 AM Accepted by SEC EDGAR 08/14/2026 - 09:03 AM Learn about SEC filing dates

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^*

Dugas Eric J.

(Last) (First) (Middle)

C/O CLEAN HARBORS, INC.

42 LONGWATER DRIVE

(Street)

NORWELL MASSACHUSETTS 02061

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP CHIEF FINANCIAL OFFICER

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
02/20/2026

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

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

4. If Amendment, Date of Original Filed (Month/Day/Year)
02/20/2026

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	02/20/2026		S		2,788	D	$281.31	20,021(1)	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. Correction to Total Number of Shares Held.

	/s/ Eric J. Dugas	08/14/2026
	** 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.
* Form 4: SEC 1474 (03-26)