sts UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 (Mark one) ☑ Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended March 31, 2023. or ☐ Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to . Commission file number: 001-32324 (CubeSmart) 000-54462 (CubeSmart, L.P.) CUBESMART, L.P. (Exact Name of Registrant as Specified in its Charter) 5 Old Lancast ...