XML 68 R51.htm IDEA: XBRL DOCUMENT
v3.25.4

SHARE-BASED COMPENSATION PLANS (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2025
SHARE-BASED COMPENSATION PLANS |
Schedule of assumptions used for estimating the fair value of share options using the Black-Scholes option-pricing model | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Assumptions: | ​ ​ ​ | 2025 | ​ ​ ​ | 2024 | ​ ​ ​ | 2023 |
Risk-free interest rate |  | ​ | 4.5 | % | ​ | 3.9 | % | ​ | 4.1 | %
Expected dividend yield |  | ​ | 4.2 | % | ​ | 4.1 | % | ​ | 4.1 | %
Volatility (1) |  | ​ | 28.00 | % | ​ | 27.00 | % | ​ | 26.00 | %
Weighted average expected life of the options (2) |  | ​ | 6 | years | ​ | 6 | years | ​ | 6 | years
Weighted average grant date fair value of options granted per share | ​ | $ | 9.16 | ​ | $ | 9.30 | ​ | $ | 7.90 | ​
Term | ​ | ​ | 10 | years | ​ | 10 | years | ​ | 10 | years
​
| (1) | Expected volatility is based upon the Company’s historical daily share prices.
​
| (2) | The expected life is based on the contractual term of the options as well as the weighted average vesting period.
Summary of option activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Options | ​ | Weighted Average Strike Price | ​ | Weighted Average Remaining Contractual Term (Years) |
Balance at December 31, 2024 |  | 2,816,466 | ​ | $ | 37.16 | ​ | 5.79 | ​
Options granted |  | 408,843 | ​ | ​ | 42.85 | ​ | 9.00 | ​
Options canceled |  | (97,454) | ​ | ​ | 48.18 | ​ | 7.73 | ​
Options exercised |  | (169,344) | ​ | ​ | 31.93 | ​ | 1.38 | ​
Balance at December 31, 2025 |  | 2,958,511 | ​ | $ | 37.89 | ​ | 5.49 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Vested or expected to vest at December 31, 2025 |  | 2,958,511 | ​ | $ | 37.89 |  | 5.49 | ​
Exercisable at December 31, 2025 |  | 2,203,158 | ​ | $ | 35.95 |  | 4.51 | ​
Schedule of estimation of the fair value of the awards, the key assumptions | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Assumptions: | ​ ​ ​ | 2025 | ​ ​ ​ | 2024 | ​ ​ ​ | 2023 |
Risk-free interest rate |  | ​ | 4.4 | % | ​ | 4.1 | % | ​ | 4.2 | %
Volatility (1) |  | ​ | 27.00 | % | ​ | 26.00 | % | ​ | 32.00 | %
​
| (1) | Expected volatility is based upon the Company’s historical daily share prices.
Schedule of non-vested restricted share activity | ​
​ | ​ | ​ | ​
​ | ​ ​ ​ | Number of Non- |
​ | ​ | Vested Restricted |
​ | ​ | Shares and Performance Units |
Non-Vested at January 1, 2025 |  | 379,414 | ​
Granted |  | 216,505 | ​
Vested |  | (146,272) | ​
Forfeited |  | (31,474) | ​
Non-Vested at December 31, 2025 |  | 418,173 | ​

X
- Definition text block-durationTabular disclosure of the significant assumptions used during the year to estimate the fair value of restricted and performance stock. + References No definition available. + Details
Name: | cube_ScheduleOfShareBasedPaymentAwardRestrictedStockAndPerformanceStockValuationAssumptionsTableTextBlock
Namespace Prefix: | cube_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the changes in outstanding nonvested shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfNonvestedShareActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration