CLH Form 144: Insider sale of 100,000 common shares

CLH filing reports a proposed sale of 100,000 common shares under a Form 144.

Rhea-AI Filing Summary

CLH filing reports a proposed sale of 100,000 common shares under a Form 144. The shares are described with acquisition records including 11/11/2009 (acquired from the public market) and a 09/16/2025 entry showing acquisition as a gift from Alan S. McKim 2007 Trust dtd 04/04/2007.

The filing lists broker details as Goldman Sachs & Co. LLC at 200 West Street, New York and identifies the exchange as NYSE.

Insights

Corporate Governance Analyst

Form 144 notifies a proposed insider sale of 100,000 common shares.

The filing documents a planned resale of 100,000 common shares with acquisition dates shown as 11/11/2009 and 09/16/2025; the latter is recorded as a gift from Alan S. McKim 2007 Trust dtd 04/04/2007. Broker information lists Goldman Sachs & Co. LLC.

Timing and execution mechanics are not specified in the excerpt; trading will follow the methods and conditions permitted under Section 144 filings and applicable exchange rules. Subsequent filings may disclose actual sale dates and quantities sold.

FAQ

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

What does CLH's Form 144 report?

The Form 144 reports a proposed sale of 100,000 common shares. It lists acquisition dates of 11/11/2009 (public market) and 09/16/2025 (gift from Alan S. McKim 2007 Trust).

Who is the broker handling the CLH proposed sale?

The filing names Goldman Sachs & Co. LLC at 200 West Street, New York as the broker. The exchange specified in the excerpt is the NYSE.

Does the Form 144 show how the shares were acquired?

Yes. The excerpt shows shares acquired from the public market on 11/11/2009 and a separate acquisition listed as a gift on 09/16/2025 from the Alan S. McKim 2007 Trust dtd 04/04/2007.

Has CLH disclosed the sale execution date in this Form 144?

No execution or settlement date is provided in the excerpt. The form documents the proposed sale and broker; actual sale dates are not shown here.

Are the shares in Form 144 already sold?

No. The Form 144 registers a proposed resale of 100,000 common shares; the excerpt does not state that any of these shares have been sold.

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

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Accepted by SEC EDGAR 02/19/2026 - 05:17 PM EST 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	0001024547
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 Norwell MASSACHUSETTS 02061
Phone	1-781-792-5000
Name of Person for Whose Account the Securities are To Be Sold	Alan S. McKim
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	Goldman Sachs & Co. LLC 200 West Street New York NY 10282	108567	30544239.78	52910946	02/19/2026	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	11/11/2009	Acquired from public market	Public Market			100000	11/11/2009	Cash
Common	09/16/2025	Acquired as a gift	Alan S. McKim 2007 Trust dtd 04/04/2007		04/02/1990	8567	09/16/2025	None

* 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

Nothing to Report

144: Remarks and Signature

Remarks	100,000 shares to be sold by Alan S. McKim 2007 Trust dtd 04/04/2007. 8,567 shares to be sold by McKim Family 2025 Bequest Trust dtd 09/05/2025.
Date of Notice	02/19/2026
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	Goldman Sachs & Co. LLC on behalf of Alan S. McKim
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)