CWST holder files notice to sell common stock

A holder of CWST common stock has filed a notice of intent to sell shares through Goldman Sachs & Co. LLC, with a potential sale date referenced as August 13, 2026.

Rhea-AI Filing Summary

A holder of CWST common stock has filed a notice of intent to sell shares through Goldman Sachs & Co. LLC, with a potential sale date referenced as August 13, 2026. The filing lists that the shares were originally obtained through multiple grants of Restricted Stock Units as compensation from the issuer in 2024 and 2025, as well as an earlier acquisition from the issuer in a private transaction in 1997. The document records these prior acquisition dates and share amounts as the basis for the proposed resale.

Key Figures

RSUs acquired on March 10, 2024: 662 shares RSUs acquired on March 12, 2024: 459 shares RSUs acquired on March 10, 2025: 458 shares +4 more

7 metrics

RSUs acquired on March 10, 2024 662 shares Acquired as compensation -- Restricted Stock Units on 03/10/2024

RSUs acquired on March 12, 2024 459 shares Acquired as compensation -- Restricted Stock Units on 03/12/2024

RSUs acquired on March 10, 2025 458 shares Acquired as compensation -- Restricted Stock Units on 03/10/2025

RSUs acquired on March 11, 2025 382 shares Acquired as compensation -- Restricted Stock Units on 03/11/2025

RSUs acquired on March 12, 2025 386 shares Acquired as compensation -- Restricted Stock Units on 03/12/2025

Shares acquired in 1997 private transaction 10972 shares Acquired from issuer in private transaction on 10/29/1997

Potential sale reference date 08/13/2026 Date listed in the securities information section for the proposed sale

Key Terms

Restricted Stock Units, private transaction, compensation, Rule 144

4 terms

Restricted Stock Units financial

"Acquired as compensation -- Restricted Stock Units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

private transaction financial

"Acquired from issuer in private transaction"

A private transaction is the sale or transfer of securities, assets, or ownership stakes carried out directly between a small number of parties rather than on a public exchange. For investors it matters because these deals are less visible and often less liquid than public trades, so pricing can be harder to verify, the investment can be harder to sell quickly, and buyers or sellers may gain strategic advantages not available in open markets — like negotiated terms similar to a private garage sale versus a crowded marketplace.

compensation financial

"Acquired as compensation -- Restricted Stock Units"

Rule 144 regulatory

"144: Securities To Be Sold"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

FAQ

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

What does the Form 144 filing for CWST indicate?

The Form 144 filing for CWST indicates that a shareholder has notified regulators of an intent to sell common stock through Goldman Sachs & Co. LLC, referencing a potential sale date of August 13, 2026, subject to applicable volume and timing rules.

How were the CWST shares reported on Form 144 originally acquired?

The CWST shares were reported as acquired primarily through Restricted Stock Units granted as compensation by the issuer in 2024 and 2025, plus an additional block obtained directly from the issuer in a 1997 private transaction, according to the acquisition history disclosed.

What compensation-based CWST Restricted Stock Unit grants are listed?

The filing lists several CWST Restricted Stock Units granted as compensation, including awards dated March 10, 2024, March 12, 2024, March 10, 2025, March 11, 2025, and March 12, 2025, each associated with specific share amounts in the acquisition table.

Is there an older CWST share acquisition referenced in the Form 144?

Yes. The Form 144 lists a CWST common stock position acquired from the issuer in a private transaction dated October 29, 1997. This older block, together with later compensation awards, forms part of the holdings that may be sold.

Does the CWST Form 144 guarantee that the shares will be sold?

No. A Form 144 is a notice of proposed sale, not a guarantee that a transaction will occur. It documents an intention to sell, subject to market conditions, Rule 144 limitations, and the holder’s ultimate decision to execute trades.

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

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Available on EDGAR 08/13/2026 - 04:37 PM Accepted by SEC EDGAR 08/13/2026 - 04:37 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	0001055353
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	Casella Waste Systems, Inc.
SEC File Number	000-23211
Address of Issuer	25 Greens Hill Lane Rutland VERMONT 05701
Phone	1-802-775-0325
Name of Person for Whose Account the Securities are To Be Sold	Douglas Casella
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	Director

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	13319	1212428.57	62651846	08/13/2026	NASD

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	03/10/2024	Acquired as compensation -- Restricted Stock Units	Issuer			662	03/10/2024	Compensation
Common	03/12/2024	Acquired as compensation -- Restricted Stock Units	Issuer			459	03/12/2024	Compensation
Common	03/12/2025	Acquired as compensation -- Restricted Stock Units	Issuer			386	03/12/2025	Compensation
Common	03/11/2025	Acquired as compensation -- Restricted Stock Units	Issuer			382	03/11/2025	Compensation
Common	03/10/2025	Acquired as compensation -- Restricted Stock Units	Issuer			458	03/10/2025	Compensation
Common	10/29/1997	Acquired from issuer in private transaction	Issuer			10972	10/29/1997	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
Date of Notice	08/13/2026
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 Douglas Casella
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)