Clean Harbors (CLH) director Marcy L. Reed sells 836 common shares

Rhea-AI Filing Summary

Clean Harbors Inc. director Marcy L. Reed reported an open-market sale of 836 shares of Common Stock on March 18, 2026 at an average price of $287.94 per share. After this transaction, Reed directly holds 5,081 shares of Clean Harbors common stock.

Insider Trade Summary

Net Seller: 836 shares ($240,718)

Net Sell 1 txn

Insider Reed Marcy L.

Role Director

Sold 836 shs ($241K)

Type	Security	Shares	Price	Value
Sale	Common Stock	836	$287.94	$241K

Holdings After Transaction: Common Stock — 5,081 shares (Direct)

Footnotes (1)

Form 4 Insider Transactions: What Each Field Means →

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^*

Reed Marcy L.

(Last) (First) (Middle)

84 SOUTH SHORE DRIVE

(Street)

STURBRIDGE MASSACHUSETTS 01566

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/18/2026

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)

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	03/18/2026		S		836	D	$287.94	5,081	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/ Marcy L. Reed	03/19/2026
	** 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)

FAQ

What insider transaction did Clean Harbors (CLH) director Marcy L. Reed report?

Director Marcy L. Reed reported an open-market sale of 836 shares of Clean Harbors Common Stock. The transaction occurred on March 18, 2026, at an average price of $287.94 per share, according to the Form 4 filing.

How many Clean Harbors (CLH) shares does Marcy L. Reed hold after the sale?

After the reported transaction, Marcy L. Reed directly holds 5,081 shares of Clean Harbors Common Stock. This figure reflects her position immediately following the March 18, 2026 open-market sale disclosed in the Form 4.

Was the Clean Harbors (CLH) insider trade by Marcy L. Reed a buy or a sell?

The transaction was a sale. Marcy L. Reed executed an open-market sale of 836 shares of Clean Harbors Common Stock at an average price of $287.94 per share, as categorized by transaction code “S” in the Form 4.

What price did Marcy L. Reed receive per share in the Clean Harbors (CLH) sale?

The reported transaction price was $287.94 per share. This represents the average price at which 836 shares of Clean Harbors Common Stock were sold in the open market on March 18, 2026, according to the Form 4 disclosure.

Does the Clean Harbors (CLH) Form 4 show any derivative securities for Marcy L. Reed?

The Form 4 data shows no derivative transactions or remaining derivative positions for Marcy L. Reed. All reported activity relates only to non-derivative Common Stock, specifically the open-market sale of 836 shares.