Casella Waste Systems (CWST) files to sell 1,343 shares after recent 13,319-share sale

Rhea-AI Filing Summary

Casella Waste Systems (CWST) reports a planned sale of its common stock by an affiliated holder. A brokerage account at Goldman Sachs & Co. LLC is listed for the transaction involving 1,343 shares of common stock, with an indicated market value of $121,836.96 and approximately 62,651,846 shares of common stock outstanding as of August 14, 2026. The securities were originally acquired from the issuer in a private transaction dated October 28, 1997. The filing also notes that on August 13, 2026, 13,319 shares of common stock were sold for an aggregate value of $1,212,661.97 during the prior three-month period.

Key Figures

Planned shares to be sold: 1,343 shares Planned sale value: $121,836.96 Shares outstanding: 62,651,846 shares +3 more

6 metrics

Planned shares to be sold 1,343 shares Common stock proposed for sale through Goldman Sachs & Co. LLC

Planned sale value $121,836.96 Market value associated with 1,343 shares of common stock

Shares outstanding 62,651,846 shares Common stock outstanding as of August 14, 2026

Recent shares sold 13,319 shares Common stock sold on August 13, 2026

Recent sale value $1,212,661.97 Aggregate value of 13,319 shares sold during past three months

Original acquisition date October 28, 1997 Shares acquired from issuer in a private transaction

Key Terms

Form 144, private transaction, securities sold during the past 3 months, common stock

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.

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.

securities sold during the past 3 months regulatory

"144: Securities Sold During The Past 3 Months"

common stock financial

"Common | Goldman Sachs & Co. LLC 200 West Street"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

FAQ

What does the Form 144 filing for CWST disclose about upcoming stock sales?

The filing shows a planned sale of 1,343 shares of Casella Waste Systems common stock with an indicated value of $121,836.96. The transaction is associated with a Goldman Sachs & Co. LLC brokerage account and is dated August 14, 2026.

How many CWST shares are reported as outstanding in this Form 144?

The document cites approximately 62,651,846 shares of Casella Waste Systems common stock outstanding as of August 14, 2026. This figure provides context for the relative size of the planned and recent stock sales reported.

What prior CWST stock sales are reported in this Form 144 filing?

The filing notes that on August 13, 2026, 13,319 shares of Casella Waste Systems common stock were sold for an aggregate value of $1,212,661.97. This sale is listed under securities sold during the past three months.

Who is named in connection with the CWST Form 144 stock activity?

The Form 144 references Douglas Casella in connection with Casella Waste Systems common stock activity and lists Goldman Sachs & Co. LLC as the brokerage firm related to the planned sale described in the filing.

How were the CWST shares originally acquired according to the Form 144?

The shares described in the Form 144 were acquired from the issuer in a private transaction dated October 28, 1997. This acquisition history is disclosed in the section describing the securities to be sold.

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Available on EDGAR 08/14/2026 - 05:09 PM Accepted by SEC EDGAR 08/14/2026 - 05:08 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
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	1343	121836.96	62651846	08/14/2026	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	10/28/1997	Acquired from issuer in private transaction	Issuer			1343	10/28/1997	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Douglas Casella 25 Greens Hill Lane Rutland VT 05701	Common	08/13/2026	13319	1212661.97

144: Remarks and Signature

Remarks

Date of Notice

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)