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Leases | 6 Months Ended
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Jun. 30, 2024
Lessee Disclosure [Abstract] |
Leases | 7. Leases We have operating lease agreements for laboratory, office and warehouse facilities in Seattle, Washington, South San Francisco, California and Bothell, Washington. During the three months ended June 30, 2024, we vacated certain leased space in South San Francisco, California and incurred a related impairment charge. See Note 12, Restructurings for more information. As of June 30, 2024, we were not party to any finance leases. The following table reconciles our undiscounted operating lease cash flows to our operating lease liabilities, less current portion balance as of June 30, 2024 (in thousands):
2024 (excluding the six months ended June 30, 2024) |  | $ | 6,889 |
2025 |  |  | 14,098 |
2026 |  |  | 12,330 |
2027 |  |  | 11,944 |
2028 |  |  | 12,282 |
Thereafter |  |  | 56,962 |
Total undiscounted lease payments |  |  | 114,505 |
Less: Imputed interest rate |  |  | (20,329 | )
Total operating lease liabilities |  |  | 94,176 |
Less: Current portion |  |  | (9,806 | )
Operating lease liabilities, less current portion |  | $ | 84,370 |
During the six months ended June 30, 2024 and 2023, cash paid for amounts included in the measurement of lease liabilities was $7.0 million and $6.9 million, respectively. We have $2.1 million in letters of credit with one of our financial institutions in connection with certain of our leases.

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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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