Clean Harbors (NYSE: CLH) director discloses bona fide gift of 342 shares

Rhea-AI Filing Summary

CLEAN HARBORS INC director Andrea Robertson reported a charitable stock gift. On May 11, 2026, she transferred 342 shares of Common Stock as a bona fide gift at a stated price of $0.00 per share. After this disposition, she directly holds 9,116 shares of CLEAN HARBORS INC Common Stock.

Insider Trade Summary

342 shares gifted

Mixed 1 txn

Insider Robertson Andrea

Role null

Type	Security	Shares	Price	Value
Gift	Common Stock	342	$0.00	--

Holdings After Transaction: Common Stock — 9,116 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Shares gifted: 342 shares Price per share: $0.00 per share Shares held after transaction: 9,116 shares +2 more

5 metrics

Shares gifted 342 shares Bona fide charitable gift on May 11, 2026

Price per share $0.00 per share Reported value for gifted shares

Shares held after transaction 9,116 shares Direct ownership after the gift

Gift transactions 1 transaction Gift count in transaction summary

Total gift shares in summary 342 shares GiftShares in transaction summary

Key Terms

Bona fide gift, Common Stock, Form 4, transaction code G, +1 more

5 terms

Bona fide gift financial

"The transaction code description is listed as "Bona fide gift"."

A bona fide gift is a genuine, voluntary transfer of money, property, or benefits from one party to another made without expectation of repayment, services, or hidden conditions. Investors care because such gifts can affect company disclosures, related‑party transaction rules, tax treatment, and perceived conflicts of interest; think of it like someone giving you a present with no strings attached — but on a corporate scale, auditors and regulators need to verify it really is unconditional.

Common Stock financial

"The security title involved in the transaction is "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.

Form 4 regulatory

"INSIDER FILING DATA (Form 4) summarizes the reported transaction."

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

transaction code G financial

"The transaction_code field shows "G", indicating a bona fide gift."

non-derivative financial

"The transaction_type is classified as "non-derivative" in the data."

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^*

Robertson Andrea

(Last) (First) (Middle)

150 OCEAN LANE DRIVE, APT 3E

(Street)

KEY BISCAYNE FLORIDA 33149

(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)
05/11/2026

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	05/11/2026		G		342(1)	D	$0	9,116	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. Charitable Gift.

	/s/ Andrea Robertson	05/12/2026
	** 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 INC (CLH) report for Andrea Robertson?

CLEAN HARBORS INC director Andrea Robertson reported a bona fide charitable gift of 342 shares of Common Stock. The transaction carried a stated price of $0.00 per share and is disclosed as a non-cash transfer rather than a market trade.

Was the CLEAN HARBORS INC (CLH) Form 4 transaction a market sale or purchase?

The Form 4 for CLEAN HARBORS INC shows a bona fide gift, not a market sale or purchase. The transaction code is G, indicating a charitable transfer of shares with no cash consideration reported in the filing.

How many CLEAN HARBORS INC (CLH) shares did Andrea Robertson gift?

Andrea Robertson gifted 342 shares of CLEAN HARBORS INC Common Stock. The filing labels the transaction as a bona fide charitable gift with a reported per-share price of $0.00, reflecting that no sale proceeds were received for this transfer.

How many CLEAN HARBORS INC (CLH) shares does Andrea Robertson hold after the gift?

Following the charitable gift, Andrea Robertson holds 9,116 shares of CLEAN HARBORS INC Common Stock directly. This post-transaction balance is reported in the Form 4 as her total direct ownership after the 342 gifted shares were transferred.

What does transaction code G mean on the CLEAN HARBORS INC (CLH) Form 4?

Transaction code G on the CLEAN HARBORS INC Form 4 denotes a bona fide gift. It indicates that the reported 342-share transfer by director Andrea Robertson was a charitable or similar gift, not an open-market trade or option exercise.