Sec Form 4 Filing - DIEFENDERFER WILLIAM M III @ CubeSmart - 2017-05-31

Insider filing report for Changes in Beneficial Ownership
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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
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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1. Name and Address of Reporting Person
DIEFENDERFER WILLIAM M III
2. Issuer Name and Ticker or Trading Symbol
CubeSmart [ CUBE]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X __ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last) (First) (Middle)
5 OLD LANCASTER ROAD
3. Date of Earliest Transaction (MM/DD/YY)
05/31/2017
(Street)
MALVERN, PA19355
4. If Amendment, Date Original Filed (MM/DD/YY)
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 (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 05/31/2017 A 3,132 ( 1 ) A $ 0 131,784 D
Common 25,039 I By 401(k) Plan
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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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
(MM/DD/YY)
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
Phantom Shares ( 2 ) 05/31/2017 A 4,007 ( 2 ) ( 2 ) Common 4,007 $ 24.96 17,048 D
Reporting Owners
Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
DIEFENDERFER WILLIAM M III
5 OLD LANCASTER ROAD
MALVERN, PA19355
X
Signatures
Douglas J. Tyrell, Attorney-in-Fact 06/02/2017
Signature of Reporting Person Date
Explanation of Responses:
( 1 )The common units issued under the Company's 2007 Equity Incentive Plan and are subject to forfeiture. The common units vest on May 31, 2018.
( 2 )These phantom shares were acquired under the CubeSmart Trustees Deferred Compensation Plan, and are payable in cash on a one-for-one basis after the reporting person ceases service with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating the deemed phantom share investment option to another investment alternative, and such transfer will be effective on the first business day of the calendar quarter following the election.

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.
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