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 Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * MITTELSTAEDT RONALD J   2. Issuer Name and Ticker or Trading Symbol Waste Connections US, Inc. [WCN] 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) 3 WATERWAY SQUARE PLACE, SUITE 110 3. Date of Earliest Transaction (Month/Day/Year) 06/01/2016 (Street) THE WOODLANDS, TX 77380 4. If Amendment, Date 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 (City) (State) (Zip) 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 Common Stock 06/01/2016   D   102,081 D (1) 0 D   Common Stock 06/01/2016   D   103,640 D (2) 0 D   Common Stock 06/01/2016   D   114,340 D (3) 0 D

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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 Underlying Securities (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

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
MITTELSTAEDT RONALD J 3 WATERWAY SQUARE PLACE SUITE 110 THE WOODLANDS, TX 77380	X		Chief Executive Officer

Signatures

Ronald Mittelstaedt		06/03/2016
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	Disposed of pursuant to an Agreement and Plan of Merger (the "Merger Agreement" and the merger contemplated thereby, the "Merger") by and among the Issuer, Water Merger Sub LLC, and Waste Connections, Inc. (formerly Progressive Waste Solutions Ltd., "New WCN") in exchange for an equal number of New WCN common shares having a market value of $67.18 per share on the closing date of the Merger.
(2)	Represents restricted stock units that, as a result of the Merger, are assumed by New WCN and converted into restricted share units relating to an equal number of New WCN common shares. The value of such units are based on the market value of the common shares of New WCN.
(3)	Represents an award by Issuer of restricted stock units to be settled pursuant to an election made in connection with the Issuer's nonqualified deferred compensation plan which, as a result of the Merger, were assumed by New WCN and converted into deferred restricted share units relating to an equal number of New WCN common shares. The value of such units are based on the market value of the common shares of New WCN.

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