CWST affiliate files Form 144 to sell Common shares

CWST affiliate reported proposed sales of Common stock under Form 144.

Rhea-AI Filing Summary

CWST affiliate reported proposed sales of Common stock under Form 144. The filing lists 1307 Restricted Stock Units acquired 03/12/2020 and 3600 Performance Awards acquired 02/24/2021 as securities to be sold. The filing also discloses recent dispositions in the past three months with specific dates and share counts.

Insights

Corporate Securities Analyst

Form 144 notice lists proposed resale of company stock and recent dispositions by an affiliate.

The filing enumerates specific award-derived securities: 1307 RSUs (03/12/2020) and 3600 Performance Awards (02/24/2021). This identifies the sources of shares intended for resale.

Recent past-three-month sales are dated and quantified; subsequent filings or transaction confirmations will show actual market timing and cash flows.

Key Figures

RSUs listed to be sold: 1307 shares Performance Awards listed to be sold: 3600 shares Disposition on 05/19/2026: 7593 shares +3 more

6 metrics

RSUs listed to be sold 1307 shares Acquired as compensation on 03/12/2020

Performance Awards listed to be sold 3600 shares Acquired as compensation on 02/24/2021

Disposition on 05/19/2026 7593 shares Proceeds value shown as 677551.48 in the excerpt

Disposition on 02/27/2026 3812 shares Proceeds value shown as 357021 in the excerpt

Disposition on 03/12/2026 377 shares Proceeds value shown as 33808 in the excerpt

Disposition on 03/16/2026 988 shares Proceeds value shown as 86715 in the excerpt

Key Terms

Form 144, Restricted Stock Units, Performance Awards, Securities Sold During The Past 3 Months

4 terms

Form 144 regulatory

"144: Securities To Be Sold"

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.

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.

Performance Awards financial

"Acquired as compensation -- Performance Awards"

Securities Sold During The Past 3 Months regulatory

"144: Securities Sold During The Past 3 Months"

FAQ

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

What does the CWST Form 144 report show?

It reports proposed sales of Common stock by an affiliate and lists award-derived securities. The filing names 1307 RSUs (03/12/2020) and 3600 Performance Awards (02/24/2021) as securities to be sold, plus recent sale dates and share counts.

How many shares were sold in the past three months per the filing?

The excerpt lists four recent dispositions with exact share counts and dates. Examples include 7,593 shares on 05/19/2026 and 3,812 shares on 02/27/2026, with proceeds recorded alongside each row.

Are the securities listed in Form 144 from compensation awards?

Yes. The filing shows securities acquired as compensation: Restricted Stock Units dated 03/12/2020 and Performance Awards dated 02/24/2021. Those award dates and counts are included in the filing excerpt.

Does the Form 144 confirm who will receive proceeds from these sales?

The provided excerpt does not state proceeds recipients explicitly. The rows show amounts next to each disposition but the filing text in the excerpt does not allocate who receives the proceeds.

What dates are associated with the listed past sales?

The excerpt records specific sale dates in the past three months: 02/27/2026, 03/12/2026, 03/16/2026, and 05/19/2026, each paired with a share count and a numeric proceeds value in the table.

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

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Accepted by SEC EDGAR 05/19/2026 - 05:19 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	0001564279
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	Edmond Coletta
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	4907	425633.18	62621741	05/19/2026	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	03/12/2020	Acquired as compensation -- Restricted Stock Units	Issuer			1307	03/12/2020	Compensation
Common	02/24/2021	Acquired as compensation -- Performance Awards	Issuer			3600	02/24/2021	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
Edmond Coletta 25 Greens Hill Lane Rutland VT 05701	Common	05/19/2026	7593	677551.48
Edmond Coletta 25 Greens Hill Lane Rutland VT 05701	Common	02/27/2026	3812	357021
Edmond Coletta 25 Greens Hill Lane Rutland VT 05701	Common	03/12/2026	377	33808
Edmond Coletta 25 Greens Hill Lane Rutland VT 05701	Common	03/16/2026	988	86715

144: Remarks and Signature

Remarks
Date of Notice	05/19/2026
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 Edmond Coletta
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)