CLH Form 144: Insider Sales Reported

CLH reports proposed sales of Common Stock by holders and an issuer equity‑comp transaction.

Rhea-AI Filing Summary

CLH reports proposed sales of Common Stock by holders and an issuer equity‑comp transaction. The filing lists sales by Eric Gerstenberg of $699,650.00 for 2,500 shares on 02/23/2026 and $144,781.00 for 601 shares on 12/16/2025. The excerpt also shows a 1,000-share equity compensation entry dated 02/01/2026.

Insights

Compliance Counsel

Form 144 lists disclosed share dispositions by a reporting person and an equity compensation sale.

The filing contains explicit sale entries: Eric Gerstenberg reported dispositions of 2,500 shares for $699,650.00 on 02/23/2026 and 601 shares for $144,781.00 on 12/16/2025. It also records an issuer-related equity compensation item for 1,000 shares dated 02/01/2026.

These entries are procedural notices of planned or recent sales under Rule 144; cash‑flow treatment and remaining holdings are not provided in the excerpt. Subsequent SEC filings or broker confirmations would show completion details.

FAQ

What sales does the CLH Form 144 report?

The filing reports Eric Gerstenberg's dispositions: 2,500 shares for $699,650.00 on 02/23/2026 and 601 shares for $144,781.00 on 12/16/2025, plus a 1,000-share equity compensation entry dated 02/01/2026.

Does the Form 144 show who will receive sale proceeds?

No. The excerpt lists sale amounts and dates but does not state who receives the proceeds. The filing shows transaction amounts ($699,650.00 and $144,781.00) without specifying cash‑flow recipients in the provided text.

Is the equity compensation sale described in the filing issuer‑driven?

The excerpt labels a 1,000-share entry as "Equity Comp" dated 02/01/2026 and marks the role as "Issuer." It therefore references an equity compensation event tied to the issuer rather than a third‑party resale in this excerpt.

Are outstanding shares or remaining holdings disclosed in this excerpt?

The provided content does not include a clear statement of shares outstanding or post‑transaction holdings. The excerpt focuses on individual sale entries and an equity compensation line without an "as of" outstanding share figure.

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Accepted by SEC EDGAR 03/18/2026 - 05:49 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	1000	290000.00	52910946	03/18/2026	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	02/23/2026	2500	699650.00
Eric Gerstenberg 144 Beacon St, Apt 3 Boston MA 02116	Common	12/16/2025	601	144781.00

144: Remarks and Signature

Remarks
Date of Notice	03/18/2026
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)