UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549
SCHEDULE 14A
(RULE 14A-101)
SCHEDULE 14A INFORMATION
Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.     )
Filed by the Registrant  x
Filed by a Party other than the Registrant  o
Check the appropriate box:
o	Preliminary Proxy Statement.
o	Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)).
o	Definitive Proxy Statement.
x	Definitive Additional Materials.
o	Soliciting Material Pursuant to §240.14a-12.
CubeSmart
(Name of Registrant as Specified In Its Charter)
N/A
(Name of Person(s) Filing Proxy Statement, if other than the Registrant)
Payment of Filing Fee (Check the appropriate box):
x	No fee required.
o	Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.
	(1)		Title of each class of securities to which transaction applies:
	(2)		Aggregate number of securities to which transaction applies:
	(3)		Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):
	(4)		Proposed maximum aggregate value of transaction:
	(5)		Total fee paid:
o	Fee paid previously with preliminary materials.
o	Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.
	(1)	Amount Previously Paid:
	(2)	Form, Schedule or Registration Statement No.:
	(3)	Filing Party:
	(4)	Date Filed:

Signature of Shareholder Date: Signature of Shareholder Date: Note: Please sign exactly as your name or names appear on this Proxy. When shares are held jointly, each holder should sign. When signing as executor, administrator, attorney, trustee or guardian, please give full title as such. If the signer is a corporation, please sign full corporate name by duly authorized officer, giving full title as such. If signer is a partnership, please sign in partnership name by authorized person. To change the address on your account, please check the box at right and indicate your new address in the address space above. Please note that changes to the registered name(s) on the account may not be submitted via this method. 1. Election of Trustees: William M. Diefenderfer III Piero Bussani Dean Jernigan Marianne M. Keler David J. LaRue John F. Remondi Jeffrey F. Rogatz John W. Fain 2. Ratify the appointment of KPMG LLP as an independent registered public accounting firm for fiscal 2012. 3. To approve, by non-binding advisory vote, executive compensation. In their discretion, proxies are authorized to vote upon such other matters as may properly come before this meeting. If this proxy card is properly executed and returned to the Company, the attorney-in-fact and proxy will vote all of the undersigned's shares entitled to vote on the matters hereon as directed hereon or, where no direction is indicated, the undersigned's vote will be cast FOR each of the matters hereon. The attorney-in-fact and proxy will vote such shares as recommended by the Board of Trustees, or, if no recommendation is given, in his own discretion, with regard to any other matters as may properly come before the meeting, including any proposal to adjourn or postpone the meeting. FOR AGAINST ABSTAIN FOR ALL NOMINEES WITHHOLD AUTHORITY FOR ALL NOMINEES FOR ALL EXCEPT (See instructions below) INSTRUCTIONS: To withhold authority to vote for any individual nominee(s), mark “FOR ALL EXCEPT” and fill in the circle next to each nominee you wish to withhold, as shown here: NOMINEES: ANNUAL MEETING OF SHAREHOLDERS OF CUBESMART May 30, 2012 INTERNET - Access “www.voteproxy.com” and follow the on-screen instructions. Have your proxy card available when you access the web page. TELEPHONE - Call toll-free 1-800-PROXIES (1-800-776-9437) in the United States or 1-718-921-8500 from foreign countries from any touch-tone telephone and follow the instructions. Have your proxy card available when you call. Vote online/phone until 11:59 PM EST the day before the meeting. MAIL - Sign, date and mail your proxy card in the envelope provided as soon as possible. IN PERSON - You may vote your shares in person by attending the Annual Meeting. PROXY VOTING INSTRUCTIONS Please detach along perforated line and mail in the envelope provided IF you are not voting via telephone or the Internet. THE BOARD OF TRUSTEES RECOMMENDS A VOTE "FOR" THE ELECTION OF TRUSTEES, "FOR" PROPOSAL 2 AND “FOR” PROPOSAL 3. PLEASE SIGN, DATE AND RETURN PROMPTLY IN THE ENCLOSED ENVELOPE. PLEASE MARK YOUR VOTE IN BLUE OR BLACK INK AS SHOWN HERE x  20833000000000000000 1 053012 COMPANY NUMBER ACCOUNT NUMBER Important Notice Regarding the Availability of Proxy Materials for the Shareholder Meeting to Be Held on May 30, 2012. The proxy statement and 2011 Annual Report to Shareholders are available at http://investors.cubesmart.com/CorporateProfile.aspx?iid=4095755.