FORM 4
[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

CASELLA JOHN W 		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
__ X __ Officer (give title below)      _____ Other (specify below)
Chief Executive Officer
(Last)          (First)          (Middle)

C/O CASELLA WASTE SYSTEMS, 25 GREENS HILL LANE 		3. Date of Earliest Transaction (MM/DD/YYYY)

2/20/2019
(Street)

RUTLAND, VT 05701
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
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. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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   2/20/2019     A    129635   (2) A $0   548108   D    
Class A Common Stock   2/21/2019     S (3)    60733   D $34.5998   (4) 487375   D    
Class B Common Stock                  494100   D    
Class A Common Stock                  694   I   See Footnote   (1)

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. 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 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 of Derivative Security: 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
Employee Stock Option (Right to Buy)   $12.48   2/20/2019     A      35952       2/20/2019   11/16/2026   Class A Common Stock   35952   $0   35952   (5) D    

Explanation of Responses:
(1)  Held by Mr. Casella's spouse. Mr. Casella disclaims beneficial ownership of the securities indicated to the extent to which he does not have an actual pecuniary interest in such securities.
(2)  Represents shares of Class A Common Stock acquired by the reporting person upon the vesting of performance-based stock units ("PSU's") granted to the reporting person on November 17, 2016, as a result of the level of achievement by Casella Waste Systems, Inc. (the "Company") of certain performance objectives during the third year ("Measurement Period") of the three-year performance period running from January 1, 2016 to December 31, 2018, multiplied by a Relative TSR multiplier for the period running from January 1, 2016 to December 31, 2018.
(3)  Represents the automatic sale of stock for tax withholding purposes pursuant to a Rule 10b5-1 trading plan adapted by the person on March 15, 2016, in connection with the vesting of PSU's on February 20, 2019.
(4)  Represents the weighted average sales price for shares sold in multiple transactions, at prices ranging from $34.40 to $34.75, inclusive. Upon request of the staff of the Securities and Exchange Commission, the issuer or a security holder of the issuer, the reporting person will provide full information regarding the number of shares sold at each separate price.
(5)  On November 17, 2016, the reporting person was granted a performance-based stock option, which vested as to 35,952 shares of Class A Common Stock, as a result of the level of achievement by the Company of certain performance objectives during the Measurement Period of the three-year performance period running from January 1, 2016 to December 31, 2018, multiplied by a Relative TSR multiplier for the period running from January 1, 2016 to December 31, 2018.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
CASELLA JOHN W
C/O CASELLA WASTE SYSTEMS
25 GREENS HILL LANE
RUTLAND, VT 05701 		X
Chief Executive Officer

Signatures
/s/ John W. Casella 2/22/2019
** 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 control number.
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