Casella Waste (NASDAQ: CWST) grants 989 RSUs to senior revenue officer

Rhea-AI Filing Summary

Rains Christopher Alan reported acquisition or exercise transactions in this Form 4 filing.

Casella Waste Systems Inc. reported that Sr. VP & Chief Revenue Officer Christopher Alan Rains received an award of 989 Restricted Stock Units (RSUs), each representing one share of Class A Common Stock. The award was made at no cash cost to him as equity compensation.

The RSUs vest in three equal annual installments beginning on March 12, 2027, meaning the shares are earned over time if continued service conditions are met. Following this grant, Rains is shown as directly holding 989 shares of Class A Common Stock.

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

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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^*

Rains Christopher Alan

(Last) (First) (Middle)

25 GREENS HILL LANE

(Street)

RUTLAND VT 05701

(City) (State) (Zip)

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

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Sr. VP & Chief Revenue Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/16/2026

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

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

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

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	03/16/2026		A(1)		989	A	$0	989	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. RSUs vest in three equal annual installments beginning on March 12, 2027.

Remarks:

	/s/Christopher Rains	03/17/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What insider transaction did CWST executive Christopher Alan Rains report?

Christopher Alan Rains reported receiving 989 Restricted Stock Units as equity compensation. Each RSU represents one share of Casella Waste Systems Class A Common Stock, bringing his directly held position to 989 shares after the award, according to the disclosed holdings data.

Is the CWST insider transaction a stock purchase or a compensation grant?

The transaction is a compensation grant, not an open-market stock purchase. Rains received 989 Restricted Stock Units at no stated purchase price, awarded under Casella Waste Systems’ Amended and Restated 2016 Incentive Plan as part of his executive compensation package.

How do the 989 CWST Restricted Stock Units vest for Christopher Alan Rains?

The 989 Restricted Stock Units vest in three equal annual installments. Vesting begins on March 12, 2027, meaning one-third of the units become shares each year, contingent on satisfying the plan’s continued service and other applicable conditions.

What does each CWST Restricted Stock Unit granted to Rains represent?

Each Restricted Stock Unit granted to Rains represents a contingent right to receive one share of Casella Waste Systems Class A Common Stock. The units convert into shares only as they vest over the scheduled three-year period starting March 12, 2027.

How many CWST shares does Christopher Alan Rains hold after this RSU award?

After this RSU award, the filing shows Rains with 989 shares of Class A Common Stock. This figure reflects his position following the grant recorded in the filing and indicates his directly held stake as of the transaction date.