CUBE

SEC source: 0001225208-25-008626 · doc4.xml · derivative · entry 1

MARTIN TIMOTHY M · CIK 0001284549 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,356

Underlying: Common · 279 shares

Expires not disclosed

F1 · derivative.exercise_price: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

F1 · derivative.exercise_date: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

F1 · derivative.expiration_date: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

SEC source: 0001225208-25-007231 · doc4.xml · nonDerivative · entry 1

MARR CHRISTOPHER P · CIK 0001185498 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 531,059

F1 · shares: On August 12, 2025, 10,132 shares were distributed from a family trust to a child of the reporting person.

SEC source: 0001225208-25-006658 · doc4.xml · derivative · entry 1

Schulte Jennifer · CIK 0001967638 · Chief Human Resources Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 950.657

Underlying: Common · 11.835 shares

Expires not disclosed

F1 · derivative.exercise_price: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

F1 · derivative.exercise_date: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

F1 · derivative.expiration_date: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

SEC source: 0001225208-25-006657 · doc4.xml · derivative · entry 1

MARR CHRISTOPHER P · CIK 0001185498 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,729

Underlying: Common · 71 shares

Expires not disclosed

F1 · derivative.exercise_price: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

F1 · derivative.exercise_date: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

F1 · derivative.expiration_date: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

SEC source: 0001225208-25-006656 · doc4.xml · derivative · entry 1

MARTIN TIMOTHY M · CIK 0001284549 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,077

Underlying: Common · 275 shares

Expires not disclosed

F1 · derivative.exercise_price: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

F1 · derivative.exercise_date: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

F1 · derivative.expiration_date: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

SEC source: 0001225208-25-005383 · doc4.xml · nonDerivative · entry 1

REMONDI JOHN F · CIK 0001109264 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,925

F1 · shares: The common shares are issued under the Company's 2007 Equity Incentive Plan. The common shares vest on the earlier of the first anniversary of the grant date, or the date of the 2026 Annual Meeting of Shareholders, or date the trustee resigns or retires from service on the Board.

SEC source: 0001225208-25-005378 · doc4.xml · nonDerivative · entry 1

Bussani Piero · CIK 0001485013 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 64,922

F1 · shares: The common shares are issued under the Company's 2007 Equity Incentive Plan. The common shares vest on the earlier of the first anniversary of the grant date, or the date of the 2026 Annual Meeting of Shareholders, or date the trustee resigns or retires from service on the Board.

SEC source: 0001225208-25-005385 · doc4.xml · nonDerivative · entry 1

RATNERSALZBERG DEBORAH · CIK 0001217466 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,203

F1 · shares: The common shares are issued under the Company's 2007 Equity Incentive Plan. The common shares vest on the earlier of the first anniversary of the grant date, or the date of the 2026 Annual Meeting of Shareholders, or date the trustee resigns or retires from service on the Board.

SEC source: 0001225208-25-005384 · doc4.xml · nonDerivative · entry 1

ROGATZ JEFFREY F · CIK 0001283783 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 54,070

F1 · shares: The common units are issued under the Company's 2007 Equity Incentive Plan. The common units vest on the earlier of the first anniversary of the grant date, or the date of the 2026 Annual Meeting of Shareholders, or date the trustee resigns or retires from service on the Board.

SEC source: 0001225208-25-005381 · doc4.xml · nonDerivative · entry 1

FAIN JOHN W · CIK 0001266220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 44,834

F1 · shares: The common shares are issued under the Company's 2007 Equity Incentive Plan. The common shares vest on the earlier of the first anniversary of the grant date, or the date of the 2026 Annual Meeting of Shareholders, or date the trustee resigns or retires from service on the Board.

SEC source: 0001225208-25-005382 · doc4.xml · nonDerivative · entry 1

Lynch Jair K · CIK 0001928242 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,421

F1 · shares: The common shares are issued under the Company's 2007 Equity Incentive Plan. The common shares vest on the earlier of the first anniversary of the grant date, or the date of the 2026 Annual Meeting of Shareholders, or date the trustee resigns or retires from service on the Board.

SEC source: 0001225208-25-005380 · doc4.xml · nonDerivative · entry 1

Dowling Dororthy · CIK 0001711832 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,554

F1 · shares: The common shares are issued under the Company's 2007 Equity Incentive Plan. The common shares vest on the earlier of the first anniversary of the grant date, or the date of the 2026 Annual Meeting of Shareholders, or date the trustee resigns or retires from service on the Board.

SEC source: 0001225208-25-005379 · doc4.xml · nonDerivative · entry 1

Chin Jit Kee · CIK 0001798435 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,638

F1 · shares: The common shares are issued under the Company's 2007 Equity Incentive Plan. The common shares vest on the earlier of the first anniversary of the grant date, or the date of the 2026 Annual Meeting of Shareholders, or date the trustee resigns or retires from service on the Board.

SEC source: 0001225208-25-004668 · doc4.xml · derivative · entry 3

Foster Jeffrey P · CIK 0001456473 · CLO & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common · 18,616 shares

Expires 2026-01-21

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: The original stock option for 18,616 shares became exercisable in three equal installments on January 22, 2017, 2018, and 2019.

SEC source: 0001225208-25-004668 · doc4.xml · nonDerivative · entry 2

Foster Jeffrey P · CIK 0001456473 · CLO & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 192,990

SEC source: 0001225208-25-004668 · doc4.xml · nonDerivative · entry 1

Foster Jeffrey P · CIK 0001456473 · CLO & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 211,606

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001225208-25-004251 · doc4.xml · derivative · entry 1

Schulte Jennifer · CIK 0001967638 · Chief Human Resources Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 938.822

Underlying: Common · 12.502 shares

Expires not disclosed

F1 · derivative.exercise_price: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

F1 · derivative.exercise_date: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

F1 · derivative.expiration_date: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

SEC source: 0001225208-25-004250 · doc4.xml · derivative · entry 1

MARTIN TIMOTHY M · CIK 0001284549 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,802

Underlying: Common · 290 shares

Expires not disclosed

F1 · derivative.exercise_price: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

F1 · derivative.exercise_date: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

F1 · derivative.expiration_date: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

SEC source: 0001225208-25-004249 · doc4.xml · derivative · entry 1

MARR CHRISTOPHER P · CIK 0001185498 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,658

Underlying: Common · 75 shares

Expires not disclosed

F1 · derivative.exercise_price: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

F1 · derivative.exercise_date: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

F1 · derivative.expiration_date: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

SEC source: 0001225208-25-003383 · doc4.xml · nonDerivative · entry 1

MARR CHRISTOPHER P · CIK 0001185498 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 541,191

F1 · ownership.direct: Reflects direct ownership of 50,471 common shares, which were previously reported as indirectly owned by Trust, as the result of a distribution of such shares from the Trust to the reporting person

SEC source: 0001225208-25-001171 · doc4.xml · nonDerivative · entry 1

Keaton Joel D · CIK 0001791610 · COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 80,836

SEC source: 0001225208-25-001170 · doc4.xml · nonDerivative · entry 1

MARR CHRISTOPHER P · CIK 0001185498 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 594,491

F1 · ownership.direct: Reflects direct ownership of 50,471 common shares, which were previously reported as indirectly owned by Trust, as the result of a distribution of such shares from the Trust to the reporting person

SEC source: 0001225208-25-000690 · doc4.xml · derivative · entry 1

Schulte Jennifer · CIK 0001967638 · Chief Human Resources Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 926.32

Underlying: Common · 11.466 shares

Expires not disclosed

F1 · derivative.exercise_price: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

F1 · derivative.exercise_date: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

F1 · derivative.expiration_date: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

SEC source: 0001225208-25-000689 · doc4.xml · derivative · entry 1

MARTIN TIMOTHY M · CIK 0001284549 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,512

Underlying: Common · 266 shares

Expires not disclosed

F1 · derivative.exercise_price: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

F1 · derivative.exercise_date: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

F1 · derivative.expiration_date: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

SEC source: 0001225208-25-000688 · doc4.xml · derivative · entry 1

MARR CHRISTOPHER P · CIK 0001185498 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,583

Underlying: Common · 69 shares

Expires not disclosed

F1 · derivative.exercise_price: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

F1 · derivative.exercise_date: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

F1 · derivative.expiration_date: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

SEC source: 0001225208-25-000184 · doc4.xml · derivative · entry 6

Schulte Jennifer · CIK 0001967638 · Chief Human Resources Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,285

Underlying: Common · 17,285 shares

Expires 2034-12-31

F5 · derivative.exercise_date: The stock options vest ratably over a three-year period, one-third per year on each of the first three anniversaries of the grant date, provided the reporting person remains employed by the Company.

SEC source: 0001225208-25-000184 · doc4.xml · nonDerivative · entry 5

Schulte Jennifer · CIK 0001967638 · Chief Human Resources Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,353

SEC source: 0001225208-25-000184 · doc4.xml · nonDerivative · entry 4

Schulte Jennifer · CIK 0001967638 · Chief Human Resources Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,997

F4 · shares: These common shares represent restricted shares issued under the Company's 2007 Equity Incentive Plan and are subject to risk of forfeiture. The common shares vest on January 1, 2028, provided the reporting person remains employed by the Company.

SEC source: 0001225208-25-000184 · doc4.xml · nonDerivative · entry 3

Schulte Jennifer · CIK 0001967638 · Chief Human Resources Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,382

F3 · shares: These common units represent restricted units issued under the Company's 2007 Equity Incentive Plan and are subject to risk of forfeiture. The common units vest January 1, 2028, provided the reporting person remains employed by the Company.

SEC source: 0001225208-25-000184 · doc4.xml · nonDerivative · entry 2

Schulte Jennifer · CIK 0001967638 · Chief Human Resources Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,766

F2 · shares: These common shares represent the vesting of performance-based shares granted on January 1, 2022 under the 2007 Equity Incentive Plan of the Company.

SEC source: 0001225208-25-000184 · doc4.xml · nonDerivative · entry 1

Schulte Jennifer · CIK 0001967638 · Chief Human Resources Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,311

F1 · shares: These common units represent restricted units issued under the Company's 2007 Equity Incentive Plan and are subject to risk of forfeiture. The common units vest ratably over a two-year period, one-half per year on January 1, 2026,and January 1, 2027, provided the reporting person remains employed by the Company.

SEC source: 0001225208-25-000180 · doc4.xml · derivative · entry 3

Foster Jeffrey P · CIK 0001456473 · CLO & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,661

Underlying: Common · 33,661 shares

Expires 2034-12-31

F3 · derivative.exercise_date: The stock options vest ratably over a three-year period, one-third per year on each of the first three anniversaries of the grant date, provided the reporting person remains employed by the Company.

SEC source: 0001225208-25-000180 · doc4.xml · nonDerivative · entry 2

Foster Jeffrey P · CIK 0001456473 · CLO & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 192,990

F2 · shares: These common shares represent the vesting of performance-based units granted on January 1, 2022 under the 2007 Equity Incentive Plan of the Company.

SEC source: 0001225208-25-000180 · doc4.xml · nonDerivative · entry 1

Foster Jeffrey P · CIK 0001456473 · CLO & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 189,656

F1 · shares: These common units represent restricted units issued under the Company's 2007 Equity Incentive Plan and are subject to risk of forfeiture. The common units vest ratably over a three-year period, one-third per year on January 1, 2026, January 1, 2027, and January 1, 2028, provided the reporting person remains employed by the Company.

SEC source: 0001225208-25-000183 · doc4.xml · derivative · entry 4

MARTIN TIMOTHY M · CIK 0001284549 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 70,051

Underlying: Common · 70,051 shares

Expires 2034-12-31

F3 · derivative.exercise_date: The stock options vest ratably over a three-year period, one-third per year on each of the first three anniversaries of the grant date, provided the reporting person remains employed by the Company.

SEC source: 0001225208-25-000183 · doc4.xml · nonDerivative · entry 2

MARTIN TIMOTHY M · CIK 0001284549 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 329,229

F2 · shares: These common shares represent the vesting of performance-based units granted on January 1, 2022 under the 2007 Equity Incentive Plan of the Company.

SEC source: 0001225208-25-000183 · doc4.xml · nonDerivative · entry 1

MARTIN TIMOTHY M · CIK 0001284549 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 321,957

F1 · shares: These common units represent restricted units issued under the Company's 2007 Equity Incentive Plan and are subject to risk of forfeiture. The common units vest ratably over a three-year period, one-third per year on January 1, 2026, January 1, 2027, and January 1, 2028, provided the reporting person remains employed by the Company.

SEC source: 0001225208-25-000182 · doc4.xml · derivative · entry 8

MARR CHRISTOPHER P · CIK 0001185498 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 200,873

Underlying: Common · 200,873 shares

Expires 2034-12-31

F5 · derivative.exercise_date: The stock options vest ratably over a three-year period, one-third per year on each of the first three anniversaries of the grant date, provided the reporting person remains employed by the Company.

SEC source: 0001225208-25-000182 · doc4.xml · nonDerivative · entry 4

MARR CHRISTOPHER P · CIK 0001185498 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 639,252

F2 · ownership.direct: Reflects direct ownership of 50,471 common shares, which were previously reported as indirectly owned by Trust, as the result of a distribution of such shares from the Trust to the reporting person

SEC source: 0001225208-25-000182 · doc4.xml · nonDerivative · entry 3

MARR CHRISTOPHER P · CIK 0001185498 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 644,626

F4 · shares: These common shares represent restricted shares issued under the Company's 2007 Equity Incentive Plan and are subject to risk of forfeiture. The common shares vest on January 1, 2028, provided the reporting person remains employed by the Company.

F2 · ownership.direct: Reflects direct ownership of 50,471 common shares, which were previously reported as indirectly owned by Trust, as the result of a distribution of such shares from the Trust to the reporting person

SEC source: 0001225208-25-000182 · doc4.xml · nonDerivative · entry 2

MARR CHRISTOPHER P · CIK 0001185498 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 630,313

F3 · shares: These common shares represent the vesting of performance-based units granted on January 1, 2022 under the 2007 Equity Incentive Plan of the Company.

F2 · ownership.direct: Reflects direct ownership of 50,471 common shares, which were previously reported as indirectly owned by Trust, as the result of a distribution of such shares from the Trust to the reporting person

SEC source: 0001225208-25-000182 · doc4.xml · nonDerivative · entry 1

MARR CHRISTOPHER P · CIK 0001185498 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 605,463

F1 · shares: These common units represent restricted units issued under the Company's 2007 Equity Incentive Plan and are subject to risk of forfeiture. The common units vest ratably over a two-year period, one-half per year on January 1, 2026,and January 1, 2027, provided the reporting person remains employed by the Company.

F2 · ownership.direct: Reflects direct ownership of 50,471 common shares, which were previously reported as indirectly owned by Trust, as the result of a distribution of such shares from the Trust to the reporting person

SEC source: 0001225208-25-000181 · doc4.xml · nonDerivative · entry 3

Keaton Joel D · CIK 0001791610 · COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 86,928

SEC source: 0001225208-25-000181 · doc4.xml · nonDerivative · entry 2

Keaton Joel D · CIK 0001791610 · COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 90,141

SEC source: 0001225208-25-000181 · doc4.xml · nonDerivative · entry 1

Keaton Joel D · CIK 0001791610 · COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 92,028

F1 · shares: These common shares represent the vesting of performance-based shares granted on January 1, 2022 under the 2007 Equity Incentive Plan of the Company.

SEC source: 0001225208-25-000179 · doc4.xml · derivative · entry 3

DeNarie Matthew D · CIK 0001967653 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,371

Underlying: Common · 10,371 shares

Expires 2034-12-31

F3 · derivative.exercise_date: The stock options vest ratably over a three-year period, one-third per year on each of the first three anniversaries of the grant date, provided the reporting person remains employed by the Company.

SEC source: 0001225208-25-000179 · doc4.xml · nonDerivative · entry 2

DeNarie Matthew D · CIK 0001967653 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,358

F2 · shares: These common shares represent the vesting of performance-based units granted on January 1, 2022 under the 2007 Equity Incentive Plan of the Company.

SEC source: 0001225208-25-000179 · doc4.xml · nonDerivative · entry 1

DeNarie Matthew D · CIK 0001967653 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,298

F1 · shares: These common units represent restricted units issued under the Company's 2007 Equity Incentive Plan and are subject to risk of forfeiture. The common units vest ratably over a three-year period, one-third per year on January 1, 2026, January 1, 2027, and January 1, 2028, provided the reporting person remains employed by the Company.

SEC source: 0001225208-24-009327 · doc4.xml · derivative · entry 1

Schulte Jennifer · CIK 0001967638 · Chief Human Resources Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 914.854

Underlying: Common · 9.232 shares

Expires not disclosed

F1 · derivative.exercise_price: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

F1 · derivative.exercise_date: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

F1 · derivative.expiration_date: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

SEC source: 0001225208-24-009326 · doc4.xml · derivative · entry 1

MARTIN TIMOTHY M · CIK 0001284549 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,246

Underlying: Common · 215 shares

Expires not disclosed

F1 · derivative.exercise_price: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

F1 · derivative.exercise_date: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.

F1 · derivative.expiration_date: These phantom shares were acquired through reinvestment of dividend equivalents under the CubeSmart Trust Executive Deferred Compensation Plan, amended and restated January 1, 2007, and are payable in cash on a one-for-one basis after the reporting person ceases employment with the Company. The reporting person may elect to transfer these phantom shares at any time by reallocating his or her deemed investment option to another investment alternative, and such transfer will be effected on the first business day of the calendar quarter following the election.