| Schedule of Intangible Assets and Goodwill |
Goodwill and other intangible assets consisted of the following: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | At September 30, 2026 | | At December 31, 2025 | | | | Gross Book Value | | Accumulated Amortization | | Net Book Value | | Gross Book Value | | Accumulated Amortization | | Net Book Value | | | | | | | | | | | | | | | | | | (Amounts in thousands) | | | | | | | | | | | | | | | | Goodwill | | | $ | 617,340 | | | $ | — | | | $ | 617,340 | | | $ | 165,843 | | | $ | — | | | $ | 165,843 | | | Shurgard® Trade Name | | | 18,824 | | | — | | | 18,824 | | | 18,824 | | | — | | | 18,824 | | | Real estate-related finite-lived intangible assets, subject to amortization | | | 1,618,501 | | | (1,125,912) | | | 492,589 | | | 1,066,738 | | | (1,000,561) | | | 66,177 | | | Non-real estate-related finite-lived intangible assets, subject to amortization | | | 240,150 | | | (12,950) | | | 227,200 | | | 4,750 | | | (3,981) | | | 769 | | | Total goodwill and other intangible assets | | | $ | 2,494,815 | | | $ | (1,138,862) | | | $ | 1,355,953 | | | $ | 1,256,155 | | | $ | (1,004,542) | | | $ | 251,613 | |
|
| Schedule of Finite-Lived Intangible Assets, Future Amortization Expense |
The estimated future amortization expense for our finite-lived intangible assets at September 30, 2026 is as follows: | | | | | | | | | | Year | | Amount | | | | | (Amounts in Thousands) | | | | | Remainder of 2026 | | $ | 126,964 | | | 2027 | | 342,101 | | | 2028 | | 117,996 | | | 2029 | | 26,419 | | | 2030 | | 22,837 | | | Thereafter | | 83,472 | | | Total | | $ | 719,789 | |
|