Form 144: CLH insider files to sell 601 shares

Eric Gerstenberg filed a Form 144 reporting a proposed sale of 601 common shares.

Rhea-AI Filing Summary

Eric Gerstenberg filed a Form 144 reporting a proposed sale of 601 common shares. The filing shows a reported trade date of 12/16/2025 with proceeds of $144,675 and identifies Raymond James & Associates as the broker. The notice lists the security class as common stock for CLH.

Insights

Compliance / SEC Filings Specialist

TL;DR: A Form 144 notice was filed for an insider sale of 601 shares on 12/16/2025.

The filing documents a proposed disposition of $144,675 tied to 601 common shares and names Raymond James & Associates as the broker. Form 144 is a notice of proposed sale under SEC rules and does not itself execute a trade.

Timing and cash-flow completion are not shown beyond the reported trade date; subsequent Form 4 or broker confirmations would establish final sale details and beneficial ownership changes.

FAQ

What did CLH insider Eric Gerstenberg report in the Form 144?

He reported a proposed sale of 601 common shares on 12/16/2025. The filing lists proceeds of $144,675 and names Raymond James & Associates as the broker handling the transaction.

Does the Form 144 mean the CLH shares were already sold?

No; Form 144 is a notice of a proposed sale under securities rules, not proof of completion. The filing shows a reported trade date of 12/16/2025, but settlement or final reporting would appear in subsequent forms or broker records.

Who is the broker listed on the CLH Form 144?

The broker named is Raymond James & Associates located at 880 Carillon Parkway, St. Petersburg, FL. The filing ties the reported transaction to that broker but does not include settlement confirmations in this excerpt.

How much did the proposed CLH sale generate according to the filing?

The Form 144 shows proceeds of $144,675 associated with the reported sale of 601 common shares on 12/16/2025. The filing records this amount as the reported proceeds for that transaction.

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Accepted by SEC EDGAR 02/23/2026 - 03:03 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001211558
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	CLEAN HARBORS INC
SEC File Number	001-34223
Address of Issuer	42 LONGWATER DRIVE P.O. BOX 9149 NORWELL MASSACHUSETTS 02061-9149
Phone	781-792-5000
Name of Person for Whose Account the Securities are To Be Sold	GERSTENBERG ERIC W
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Raymond James & Associates 880 Carillon Parkway St. Petersburg FL 33716	2500	712000.00	52910946	02/23/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	02/01/2026	Equity Comp	Issuer			5226	02/01/2026	Equity Comp

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Eric Gerstenberg 144 Beacon St, Apt 3 Boston MA 02116	Common	12/16/2025	601	144675.00

144: Remarks and Signature

Remarks
Date of Notice	02/23/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	Maressia Rooks-Bailey, as duly authorized representative of Raymond James & Associates, Inc., as attorney-in-fact for Eric Gerstenberg
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)