Casella Waste Systems (CWST) director receives 1,793 RSUs vesting June 2027

Rhea-AI Filing Summary

Kirk Rose M. reported acquisition or exercise transactions in this Form 4 filing.

Casella Waste Systems director Kirk M. Rose received a grant of 1,793 shares of Class A Common Stock as restricted stock units (RSUs). The award was valued at $83.65 per share on the grant date and was issued under the company’s Amended and Restated 2016 Incentive Plan.

Each RSU represents a right to receive one share of Class A Common Stock, and the RSUs will vest in full on June 4, 2027. Following this grant, Rose directly holds 9,835 shares of Casella’s Class A Common Stock.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Kirk Rose M.

Role null

Type	Security	Shares	Price	Value
Grant/Award	Class A Common Stock	1,793	$83.65	$150K

Holdings After Transaction: Class A Common Stock — 9,835 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

RSU grant size: 1,793 shares Grant date fair value per share: $83.65 per share Shares after transaction: 9,835 shares +1 more

4 metrics

RSU grant size 1,793 shares Restricted stock units of Class A Common Stock granted to director

Grant date fair value per share $83.65 per share Price per share used for the RSU award on June 4, 2026

Shares after transaction 9,835 shares Total Class A Common Stock directly held by Kirk M. Rose post-grant

Vesting date June 4, 2027 Date when all 1,793 RSUs vest in full

Key Terms

restricted stock units (RSUs), Amended and Restated 2016 Incentive Plan, Class A Common Stock, Grant, award, or other acquisition

4 terms

restricted stock units (RSUs) financial

"Represents the award of restricted stock units (RSUs) under the Casella Waste Systems, Inc. Amended and Restated 2016 Incentive Plan."

Restricted stock units (RSUs) are a type of company promise to give employees shares of stock in the future, usually after certain conditions like working for a set time. They are like a gift promised today that you receive later, which can become valuable if the company's stock price goes up. RSUs matter because they are a way companies reward employees and can be a significant part of compensation.

Amended and Restated 2016 Incentive Plan financial

"Represents the award of restricted stock units (RSUs) under the Casella Waste Systems, Inc. Amended and Restated 2016 Incentive Plan."

Class A Common Stock financial

"Each RSU represents a contingent right to receive one share of Casella's Class A Common Stock."

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

Grant, award, or other acquisition financial

"transaction_code_description: "Grant, award, or other acquisition""

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Form 4 Insider Transactions: What Each Field Means →

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^*

Kirk Rose M.

(Last) (First) (Middle)

C/O CASELLA WASTE SYSTEMS, INC

25 GREENS HILL LANE

(Street)

RUTLAND VERMONT 05701

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
CASELLA WASTE SYSTEMS INC [ CWST ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/04/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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
Class A Common Stock	06/04/2026		A		1,793(1)	A	$83.65	9,835	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. Represents the award of restricted stock units (RSUs) under the Casella Waste Systems, Inc. Amended and Restated 2016 Incentive Plan. Each RSU represents a contingent right to receive one share of Casella's Class A Common Stock. The RSUs will vest in full on June 4, 2027.

Remarks:

	/s/ Shelley E. Sayward, Attorney in Fact for Rose M. Kirk	06/05/2026
	** 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.
* Form 4: SEC 1474 (03-26)