Director John R. Welch sells 750 Clean Harbors (CLH) shares in market trade

Rhea-AI Filing Summary

Clean Harbors Inc. director John R. Welch sold 750 shares of common stock in an open-market transaction at a price of $273.07 per share. After this sale, he directly owned 10,237 shares of Clean Harbors common stock.

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

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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^*

Welch John R.

(Last) (First) (Middle)

975 MEMORIAL DRIVE

APT 611

(Street)

CAMBRIDGE MA 02138

(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)
02/19/2026

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	02/19/2026		S		750	D	$273.07	10,237	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/ John R. Welch	02/20/2026
	** 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.

FAQ

What insider transaction did Clean Harbors (CLH) disclose for John R. Welch?

Clean Harbors disclosed that director John R. Welch sold 750 shares of common stock in an open-market transaction at $273.07 per share. Following this sale, he directly held 10,237 shares of Clean Harbors common stock.

How many Clean Harbors (CLH) shares did John R. Welch sell and at what price?

John R. Welch sold 750 shares of Clean Harbors common stock at a price of $273.07 per share. This was reported as an open-market sale under transaction code “S” in the Form 4 insider filing.

What is John R. Welch’s remaining Clean Harbors (CLH) shareholding after the reported sale?

After the reported sale, John R. Welch directly owned 10,237 shares of Clean Harbors common stock. This post-transaction ownership figure is disclosed in the Form 4 as the total shares following the transaction.

Was the Clean Harbors (CLH) insider transaction by John R. Welch a purchase or a sale?

The transaction was a sale. The Form 4 identifies it with transaction code “S” and describes it as an open-market sale of 750 shares of Clean Harbors common stock at $273.07 per share.

What type of security did John R. Welch trade in the Clean Harbors (CLH) Form 4 filing?

John R. Welch traded Clean Harbors common stock. The Form 4 lists the security title as “Common Stock” and records a single non-derivative transaction involving 750 shares sold at $273.07 per share.