Clean Harbors (CLH) EVP Geer granted 2,346 shares, withholds 197 for taxes

Rhea-AI Filing Summary

Clean Harbors EVP Industrial Services Charles H. Geer II reported routine equity transactions in company common stock. On February 1, 2026, he received two stock awards: 1,843 shares as a performance-based restricted stock award and 503 shares as a time-vesting restricted stock award, both at no cash cost.

On February 2, 2026, 197 shares were withheld at $259.91 per share to cover tax liabilities related to vesting, as permitted under Rule 16b-3. After these transactions, he directly held 10,963 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^*

Geer Charles H. II

(Last) (First) (Middle)

42 LONGWATER DRIVE

(Street)

NORWELL MA 02061

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP, Industrial Services

3. Date of Earliest Transaction (Month/Day/Year)
02/01/2026

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	02/02/2026		F		197(1)	D	$259.91	8,617	D
Common Stock	02/01/2026		A		1,843(2)	A	$0	10,460	D
Common Stock	02/01/2026		A		503(3)	A	$0	10,963	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. Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b3.

2. Performance-Based Restricted Stock Award that will vest 50% on 3/15/2028 and 50% on 3/15/2029, depending on achievement of certain goals during the performance period 1/1/2027 through 12/31/2027

3. Restricted Stock Award vesting as to 25% on February 1, 2027; 25% on February 1, 2028; 25% on February 1, 2029; and 25% on February 1, 2030.

	/s/ Charles H. Geer II	02/03/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What insider transactions did CLH EVP Charles Geer report on this Form 4?

The Form 4 shows Charles H. Geer II received two stock awards totaling 2,346 shares and had 197 shares withheld for taxes. All transactions involved Clean Harbors common stock and reflect standard equity compensation and related tax withholding activity.

How many Clean Harbors (CLH) shares does Charles Geer own after these transactions?

After the reported transactions, Charles H. Geer II directly holds 10,963 shares of Clean Harbors common stock. This figure incorporates the new restricted stock awards and the 197 shares withheld to satisfy tax obligations tied to vesting.

What is the nature of the 1,843-share award reported for CLH EVP Geer?

The 1,843-share award is a performance-based restricted stock grant. It is scheduled to vest 50% on March 15, 2028 and 50% on March 15, 2029, depending on the achievement of specified goals during the 2027 performance period.

How will the 503-share restricted stock award to CLH EVP Geer vest over time?

The 503-share restricted stock award vests in four equal installments. Vesting occurs 25% each on February 1, 2027, February 1, 2028, February 1, 2029, and February 1, 2030, aligning with a typical multi-year retention schedule.

Why were 197 CLH shares withheld from Charles Geer at $259.91 per share?

197 shares were withheld at $259.91 per share to cover Geer’s tax liability from vesting securities. The footnote explains this withholding was done in accordance with Rule 16b-3, which governs certain insider equity compensation transactions.

What is Charles Geer’s role at Clean Harbors (CLH) mentioned in the Form 4?

Charles H. Geer II is identified as an officer of Clean Harbors with the title EVP, Industrial Services. The Form 4 confirms he is not listed as a director or a 10% owner, but reports as a senior executive officer.