Casella director plans sale of 1,100 CWST shares

Casella Waste Systems, Inc. (CWST) reports that director Michael Burke, through Goldman Sachs & Co. LLC, has filed a notice under Rule 144 to sell up to 1,100 shares of CWST common stock.

Rhea-AI Filing Summary

Casella Waste Systems, Inc. (CWST) reports that director Michael Burke, through Goldman Sachs & Co. LLC, has filed a notice under Rule 144 to sell up to 1,100 shares of CWST common stock. These shares relate to 294 shares acquired as compensation via Restricted Stock Units on 06/03/2024 and 806 shares acquired as compensation via Restricted Stock Units on 06/05/2026. The proposed sale is listed with Goldman Sachs & Co. LLC as broker and an anticipated sale date of 08/26/2026. In the past three months, Michael Burke sold 2,305 shares of CWST common stock on 05/26/2026 for total proceeds of $201,818.89.

Key Figures

Shares of common stock proposed to be sold: 1,100 shares Shares sold during the past 3 months: 2,305 shares Total proceeds from shares sold during past 3 months: $201,818.89 +3 more

6 metrics

Shares of common stock proposed to be sold 1,100 shares Proposed Rule 144 sale through Goldman Sachs & Co. LLC

Shares sold during the past 3 months 2,305 shares Sale on 05/26/2026 by Michael Burke

Total proceeds from shares sold during past 3 months $201,818.89 Sale of 2,305 shares of common stock on 05/26/2026

Restricted Stock Units acquired as compensation on 06/03/2024 294 shares Common stock acquired from issuer as compensation

Restricted Stock Units acquired as compensation on 06/05/2026 806 shares Common stock acquired from issuer as compensation

Anticipated sale date for proposed Rule 144 transaction 08/26/2026 Proposed sale of 1,100 shares of common stock

Key Terms

Rule 144, Restricted Stock Units, Form 144

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

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.

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.

Form 144 regulatory

"144: Securities Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

FAQ

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

What does the Form 144 filing by CWST insider Michael Burke report?

It reports that Michael Burke, a director of Casella Waste Systems, Inc. (CWST), has filed notice under Rule 144 to sell up to 1,100 shares of CWST common stock through Goldman Sachs & Co. LLC, with the shares originating from Restricted Stock Unit compensation awards.

How many CWST shares are proposed to be sold in this Form 144?

The filing lists a proposed sale of up to 1,100 shares of Casella Waste Systems, Inc. common stock, to be sold through Goldman Sachs & Co. LLC, with an anticipated sale date of 08/26/2026.

What CWST shares has Michael Burke sold recently?

Over the past three months, the filing shows that 2,305 shares of Casella Waste Systems, Inc. common stock were sold on 05/26/2026 for total proceeds of $201,818.89.

How were the CWST shares in this Form 144 acquired?

The shares were acquired as compensation through Restricted Stock Units. The filing lists 294 shares acquired on 06/03/2024 and 806 shares acquired on 06/05/2026, both from the issuer as compensation.

Who is acting as broker for the proposed CWST share sale?

The broker listed is Goldman Sachs & Co. LLC, located at 200 West Street, New York, NY 10282. The filing associates Goldman Sachs with the proposed sale of 1,100 shares of Casella Waste Systems, Inc. common stock.

What is Rule 144 in relation to CWST’s Form 144 filing?

The notice is filed under Rule 144, which governs resales of restricted and control securities. The form states that information is provided for the person whose account the securities are to be sold, consistent with paragraph (a) and aggregation rules in paragraph (e) of Rule 144.

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

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Available on EDGAR 08/26/2026 - 04:43 PM EDT Accepted by SEC EDGAR 08/26/2026 - 04:42 PM EDT 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	0001224062
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	Michael Burke
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	1100	103114	62651846	08/26/2026	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	06/03/2024	Acquired as compensation -- Restricted Stock Units	Issuer			294	06/03/2024	Compensation
Common	06/05/2026	Acquired as compensation -- Restricted Stock Units	Issuer			806	06/05/2026	Compensation

* 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
Michael Burke 25 Greens Hill Lane Rutland VT 05701	Common	05/26/2026	2305	201818.89

144: Remarks and Signature

Remarks
Date of Notice	08/26/2026
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 Michael Burke
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)