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Leases | 9 Months Ended
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Sep. 30, 2025
Leases [Abstract] |
Leases | 5. Leases The Company primarily leases facilities for office space under non-cancelable operating leases for its U.S. and international locations. As of September 30, 2025, non-cancelable leases expire on various dates between 2025 and 2043, some of which include options to extend the leases for up to 20 years. On April 20, 2015, the Company created a wholly owned subsidiary, Relay, Inc., a Delaware corporation (f/k/a Republic Wireless, Inc.) (“Relay”). On November 30, 2016, the Company completed a pro-rata distribution of the common stock of Relay to its stockholders of record as of the close of business. Due to equity ownership in Relay by certain members of Bandwidth’s Board of Directors, Relay is considered a related party to the Company. On January 1, 2025, the Company commenced a sublease of a portion of its corporate headquarters to Relay. The sublease expires on December 31, 2029 and does not include any option to renew or purchase, nor does it include any residual value guarantees. During the three and nine months ended September 30, 2025, the Company received approximately $0.2 million and $0.7 million, respectively, in rental payments from Relay under the sublease. As of September 30, 2025, t otal future minimum rent payments to the Company under this sublease were $10.2 million. F or the three and nine months ended September 30, 2025, s ublease income wa s $0.5 million and $1.6 million, respectively, and was recorded as an offset to operating lease expense in the Company’s condensed consolidated financial statements. The components of operating lease expense recorded in the condensed consolidated statements of operations were as follows:
| Three months ended September 30, |  | Nine months ended September 30,
| 2025 |  | 2024 |  | 2025 |  | 2024 |  |
| (In thousands)
Operating lease cost | $ | 5,752 |  |  | $ | 5,609 |  |  | $ | 17,200 |  |  | $ | 17,378 |  |  |
Sublease income | (545) |  |  | — |  |  | (1,635) |  |  | — |  |  |
Total net lease cost | $ | 5,207 |  |  | $ | 5,609 |  |  | $ | 15,565 |  |  | $ | 17,378 |  |  |
Other supplemental information related to operating leases were as follows:
|  |  | Nine months ended September 30,
|  |  |  |  | 2025 |  | 2024 |  |
Weighted average remaining lease term (in years) |  |  |  |  | 17.53 |  | 18.71 |  |
Weighted average discount rate |  |  |  |  | 8.75 | % |  | 8.77 | % |  |
Maturities of operating lease liabilities were as follows:
|  |  | As of September 30, |  |
|  |  | 2025 |  |
|  |  | (In thousands) |  |
2025 (remaining) |  |  | $ | 5,706 |  |  |
2026 |  |  | 23,123 |  |  |
2027 |  |  | 23,219 |  |  |
2028 |  |  | 23,399 |  |  |
2029 |  |  | 23,818 |  |  |
Thereafter |  |  | 357,115 |  |  |
Total lease payments |  |  | 456,380 |  |  |
Less: imputed interest |  |  | (231,666) |  |  |
Total lease obligations |  |  | 224,714 |  |  |
Less: current obligations |  |  | (3,655) |  |  |
Long-term lease obligations |  |  | $ | 221,059 |  |  |

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- Definition The entire disclosure for operating leases of lessee. Includes, but is not limited to, description of operating lease and maturity analysis of operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/842-20/tableOfContent + Details
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