Sec Form 3 Filing - Keaton Joel D @ CubeSmart - 2019-11-05

FORM 3 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

OMB APPROVAL OMB Number: 3235-0287 Expires: November 30, 2011 Estimated average burden hours per response... 0.5

1. Name and Address of Reporting Person Keaton Joel D 2. Issuer Name and Ticker or Trading Symbol CubeSmart [ CUBE] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Sr VP of Operations (Last) (First) (Middle) 5 OLD LANCASTER ROAD 3. Date of Earliest Transaction (MM/DD/YY) 11/05/2019 (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 31,057 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 (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 Stock Option (right to buy) $ 14.84 ( 1 ) 01/24/2023 Common 5,078 D Stock Option (rig ht to buy) $ 15.67 ( 2 ) 01/23/2024 Common 10,054 D Stock Option (right to buy) $ 25 ( 3 ) 01/22/2025 Common 8,026 D Stock Option (right to buy) $ 26.3 ( 4 ) 01/22/2027 Common 20,969 D Stock Option (right to buy) $ 27.78 ( 5 ) 01/22/2028 Common 23,312 D Stock Option (right to buy) $ 28.69 ( 6 ) 12/31/2028 Common 24,147 D Stock Option (right to buy) $ 30.32 ( 7 ) 01/21/2026 Common 13,141 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Keaton Joel D 5 OLD LANCASTER ROAD MALVERN, PA19355 Sr VP of Operations Signatures Douglas J. Tyrell, Attorney-in-Fact 11/05/2019 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The stock options were granted on January 25, 2013 and are fully vested. ( 2 )The stock options were granted on January 24, 2014 and are fully vested. ( 3 )The stock options were granted on January 23, 2015 and are fully vested. ( 4 )The original stock option for 20,969 shares became exercisable in three equal installments on January 23, 2018, 2019 and 2020. ( 5 )The original stock option for 23,312 shares became exercisable in three equal installments on January 23, 2019, 2020 and 2021. ( 6 )The original stock option for 24,147 shares became exercisable in three equal installments on January 24, 2020, 2021 and 2022. ( 7 )The stock options were granted on January 22, 2016 and are fully vested.

Remarks: jkpoacube.txt

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 Number.