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Leases | 3 Months Ended
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Mar. 31, 2024
Leases [Abstract] |
Leases | 9. Leases The Company has operating leases for its office and laboratory space, including its corporate headquarters. In August 2020, the Company entered into a lease agreement for approximately 4,734 square feet of office and lab space at 2656 State Street in Carlsbad, California, for the Company’s headquarters (the Original Lease). The Original Lease commenced in May 2021, with an option to extend for two additional 36 month periods. In March 2022, the Company entered into a lease agreement for approximately 8,331 square feet of additional office and laboratory space at 2676 State Street in Carlsbad, California (the Expansion Lease). The Expansion Lease commenced for accounting purposes when the Company gained access to the premises in May 2023. The Company's obligation for payment of base rent began on the date the landlord delivered possession of the Expansion Lease premises in November 2023. The landlord completed improvements on the Expansion Lease premises, and the Company paid $0.5 million of these costs prior to the Expansion Lease commencement. The Company has concluded that the landlord is the accounting owner of these improvements, and therefore this payment has been included in the calculation of the right-of-use asset and lease liability. The Company is entitled to certain rent abatement for delays related to the landlord's delivery of the Expansion Lease premises to the Company. The Expansion Lease has a lease term of 120 months, starting on the day the landlord delivered possession of the Expansion Lease premises. The Company has an option to renew the Expansion Lease for two additional 36 month periods. The Original Lease was also amended to have the same lease expiration as the Expansion Lease. The Company did not include the renewal periods in determining the lease term, as the Company was not reasonably certain to exercise either the amended Original Lease or the Expansion Lease renewal options. In connection with the Company's lease agreements, the Company paid security deposits of $0.1 million and is required to maintain a letter of credit of $1.0 million until 2027 at which time it can be reduced to $0.5 million throughout the end of the lease term. Cash paid for amounts included in the measurement of lease liabilities was $0.1 million for each of the three months ended March 31, 2024 and 2023. The components of lease expense include operating, short-term, and variable lease costs. Amortization is recorded within research and development and general and administrative expenses in the condensed statements of operations and comprehensive loss. Components of lease cost for the three months ended March 31, 2024 and 2023, respectively, were as follows (in thousands):
|  | Three Months Ended March 31, |
|  | 2024 |  |  | 2023 |
Operating lease cost |  | $ | 239 |  |  | $ | 83 |
Short-term lease cost |  |  | 24 |  |  |  | 22 |
Variable lease cost |  |  | 32 |  |  |  | 14 |
Total lease cost |  | $ | 295 |  |  | $ | 119 |
Maturities of lease liabilities, weighted-average remaining term and weighted-average discount rate were as follows (in thousands):
|  | As of March 31, |
Year ending December 31, |  |  |
2024 (remaining nine months) |  | $ | 638 |
2025 |  |  | 873 |
2026 |  |  | 899 |
2027 |  |  | 926 |
2028 |  |  | 954 |
Thereafter |  |  | 5,027 |
Total minimum lease payments |  |  | 9,317 |
Less: amount representing interest |  |  | (2,830 | )
Present value of lease liabilities |  |  | 6,487 |
Less: current portion of lease liabilities |  |  | (370 | )
Lease liabilities, noncurrent |  | $ | 6,117 |
|  | March 31, |  |  | December 31, |
|  | 2024 |  |  | 2023 |
Weighted-average remaining lease term (years) - operating leases |  |  | 9.7 |  |  |  | 9.9 |
Weighted-average incremental borrowing rate - operating leases |  |  | 8.07 | % |  |  | 8.07 | %

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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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