X0508 4 2024-05-03 0001298675 CubeSmart CUBE 0001791610 Keaton Joel D 5 OLD LANCASTER ROAD MALVERN PA 19355 1 COO 0 Common 2024-05-03 4 M 0 23312.0000 27.7800 A 110975.0000 D Common 2024-05-03 4 M 0 20969.0000 26.3000 A 131944.0000 D Common 2024-05-03 4 M 0 13141.0000 30.3200 A 145085.0000 D Common 2024-05-03 4 D 0 57422.0000 41.7912 D 87663.0000 D Stock Option (right to buy) 30.3200 2024-05-03 4 M 0 13141.0000 0.0000 D 2026-01-21 Common 13141.0000 0.0000 D Stock Option (right to buy) 26.3000 2024-05-03 4 M 0 20969.0000 0.0000 D 2027-01-22 Common 20969.0000 0.0000 D Stock Option (right to buy) 27.7800 2024-05-03 4 M 0 23312.0000 0.0000 D 2028-01-22 Common 23312.0000 0.0000 D The original stock option for 13,141 shares became exercisable in three equal installments on January 22, 2017, 2018, and 2019. The original stock option for 20,969 shares became exercisable in three equal installments on January 23, 2018, 2019, and 2020. The original stock option for 23,312 shares became exercisable in three equal installments on January 23, 2019, 2020, and 2021. Douglas J. Tyrell, Attorney-in-Fact 2024-05-06