Clean Harbors director receives 652-share stock grant

Reed Marcy L. reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Reed Marcy L. reported acquisition or exercise transactions in this Form 4 filing.

CLEAN HARBORS INC director Marcy L. Reed received a grant of 652 shares of common stock as restricted stock. The award carries no purchase price and was granted as compensation to a non-employee director. Following this grant, Reed directly holds a total of 5,733 shares of CLEAN HARBORS INC common stock. The restricted stock vests 100% on the date of the company's next annual meeting of shareholders, meaning full ownership transfers at that time if service conditions are met.

Insider Trade Summary

Grant/Award: 652 shares

Grant/Award 1 txn

Insider Reed Marcy L.

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	652	$0.00	$0.00

Holdings After Transaction: Common Stock — 5,733 shares (Direct)

Footnotes (1)

1. F1. Award of restricted stock to non-employee director vesting 100% upon the date of the next annual meeting of shareholders.

Key Figures

Restricted stock grant: 652 shares Grant price: $0.00 per share Total holdings after grant: 5,733 shares +1 more

4 metrics

Restricted stock grant 652 shares Award of restricted common stock to non-employee director

Grant price $0.00 per share Director equity award compensation

Total holdings after grant 5,733 shares Director’s direct ownership following Form 4 transaction

Vesting condition 100% at next annual meeting Restricted stock vests at next annual shareholder meeting

Key Terms

restricted stock, non-employee director, annual meeting of shareholders, Grant, award, or other acquisition

4 terms

restricted stock financial

"Award of restricted stock to non-employee director vesting 100% upon the date"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

non-employee director financial

"Award of restricted stock to non-employee director vesting 100% upon"

annual meeting of shareholders financial

"vesting 100% upon the date of the next annual meeting of shareholders"

A yearly gathering where a company’s owners (shareholders) vote on key items like electing the board, approving executive pay, and ratifying auditors, and receive updates on performance and strategy. Think of it as an annual town hall for owners: it matters to investors because outcomes and disclosures can affect leadership, corporate direction, dividend and governance policies, and therefore the company’s risk and potential return.

Grant, award, or other acquisition financial

"transaction_code_description: Grant, award, or other acquisition"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did CLEAN HARBORS INC (CLH) report for Marcy L. Reed?

CLEAN HARBORS INC reported that director Marcy L. Reed received a grant of 652 shares of common stock as restricted stock. This is a compensation-related award, not an open-market purchase or sale, and reflects routine equity compensation for a non-employee director.

How many CLEAN HARBORS INC (CLH) shares does Marcy L. Reed hold after this Form 4?

After the restricted stock grant, Marcy L. Reed directly holds 5,733 shares of CLEAN HARBORS INC common stock. This total reflects the newly awarded 652 restricted shares combined with her prior holdings as disclosed in the Form 4 insider filing.

What are the terms of the restricted stock grant to CLEAN HARBORS INC (CLH) director Marcy L. Reed?

The award is 652 shares of restricted common stock granted to non-employee director Marcy L. Reed. According to the footnote, the restricted stock vests 100% on the date of the next annual meeting of shareholders, aligning vesting with the company’s shareholder meeting cycle.

Did Marcy L. Reed buy or sell CLEAN HARBORS INC (CLH) shares on the market?

No open-market buy or sell occurred. The Form 4 shows an acquisition coded as a grant or award of 652 restricted shares of common stock, provided at a price of $0.00 per share as part of director compensation rather than a market transaction.

When will Marcy L. Reed’s CLEAN HARBORS INC (CLH) restricted stock vest?

The restricted stock granted to Marcy L. Reed will vest 100% on the date of CLEAN HARBORS INC’s next annual meeting of shareholders. At that vesting date, the restrictions lapse, and she will fully own the awarded shares subject to any applicable company policies.

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

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Accepted by SEC EDGAR 05/22/2026 - 11:33 AM EDT 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^*

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)
05/20/2026

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)

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	05/20/2026		A		652(1)	A	$0	5,733	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. Award of restricted stock to non-employee director vesting 100% upon the date of the next annual meeting of shareholders.

	/s/ Marcy L. Reed	05/22/2026
	** 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)