[Form 4] Clean Harbors, Inc Insider Trading Activity

Rhea-AI Filing Summary

Cloudastructure, Inc. (Nasdaq: CSAI) has overhauled its corporate governance framework. On 27 June 2025 the Board adopted a Second Amended and Restated Bylaws, replacing the prior version to reflect its status as a public operating company. Key changes cover: designation of corporate offices; detailed advance-notice and proxy rules for stockholder meetings; director number, election and resignation mechanics; committee formation; officer authority; record-keeping standards; broad indemnification and D&O insurance authority; and an exclusive Delaware Chancery Court forum for most corporate disputes.

Because the bylaw revisions alter shareholder procedures, the filing is reported under Item 3.03 – Material Modification to Rights of Security Holders.

Separately, effective 30 June 2025, the Board approved an Amended and Restated Code of Business Conduct and Ethics. The code mandates honest and fair conduct, fraud reporting to the Chairman, compliance with laws, anti-corruption controls, accurate books and records, and explicit insider-trading prohibitions. Senior financial officers face heightened disclosure and integrity standards.

The 8-K contains no financial results or transactions; exhibits include the full bylaws (Ex. 3.1) and code of ethics (Ex. 14).

Insights

Corporate Governance Expert

TL;DR: Bylaw overhaul modernises governance but tightens shareholder procedures; overall impact governance-positive, value-neutral.

The Second Amended and Restated Bylaws move CSAI toward best-practice public-company governance: clearer director qualifications, committee authority, electronic notices and indemnification language. These changes reduce procedural ambiguity, potentially lowering litigation risk. However, the exclusive-forum clause and stricter advance-notice requirements may limit shareholder litigation venues and meeting flexibility, mildly diluting minority rights. From a governance standpoint this is conventional for Delaware issuers and unlikely to affect valuation in the near term.

Portfolio Manager

TL;DR: Corporate housekeeping; no earnings data, limited direct valuation effect, modest reduction in legal uncertainty.

The filing contains no revenue, margin or cash-flow information. While the clarified bylaws and ethics code enhance operational discipline and could avert future compliance costs, they do not change the company’s economic outlook. Given CSAI’s micro-cap status, investors should view the 8-K as neutral information relevant mainly for governance screens rather than a catalyst for price movement.

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^*

GERSTENBERG ERIC W

(Last) (First) (Middle)

C/O CLEAN HARBORS ENVIRON. SERVICES INC.

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)
	CO-CEO

3. Date of Earliest Transaction (Month/Day/Year)
07/01/2025

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	07/01/2025		F		564(1)	D	$229.55	51,055	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.

	/s/ Eric W. Gerstenberg	07/03/2025
	** 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.