FORM 3
        
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF 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 *

Sinner Stephen

2. Date of Event Requiring Statement (MM/DD/YYYY)
7/19/2017 

3. Issuer Name and Ticker or Trading Symbol

Westbury Bancorp, Inc. [WBB]

(Last)        (First)        (Middle)

200 SOUTH MAIN STREET, C/O WESTBURY BANCORP, INC.

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

__ X __ Director                            _____ 10% Owner
___ X ___ Officer (give title below)          _____ Other (specify below)
Chief Operating Officer /

(Street)

WEST BEND, WI 53095       

(City)              (State)              (Zip)
5. 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 Beneficially Owned
1.Title of Security
(Instr. 4) 		2. Amount of Securities Beneficially Owned
(Instr. 4) 		3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5) 		4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock   514.457   I   By 401(k)  
Common Stock   1572.317   I   By ESOP  
Common Stock   4256   (1) D    

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 4) 		2. Date Exercisable and Expiration Date
(MM/DD/YYYY) 		3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4) 		4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5) 		6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Common Stock Option (right to buy)   6/26/2015   (2) 6/26/2024   Common Stock   3181   $15.2   D    
Common Stock Option (right to buy)   6/26/2016   (3) 6/26/2025   Common Stock   1000   $17.35   D    

Explanation of Responses:
(1)  2,125 of these shares are held jointly by Mr. Sinner and his spouse.
(2)  The options vest 20% per year over a five year period following the grant date of June 26, 2014.
(3)  The options vest 20% per year over a five year period following the grant date of June 26, 2015.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Sinner Stephen
200 SOUTH MAIN STREET
C/O WESTBURY BANCORP, INC.
WEST BEND, WI 53095 		X
Chief Operating Officer

Signatures
/s/ Stephen Sinner 7/25/2017
** 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 5(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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