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Commitments and Contingencies | 3 Months Ended
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Mar. 31, 2023
Commitments and Contingencies Disclosure [Abstract] |
Commitments and Contingencies | Commitments and Contingencies Operating Leases Our headquarters are located in Redwood City, California, where we occupy approximately 77,300 square feet of office and laboratory space in multiple buildings within the same business park of Metropolitan Life Insurance Company ("MetLife"). Our lease agreement with MetLife ("RWC Lease") includes approximately 28,200 square feet of space located at 200 and 220 Penobscot Drive, Redwood City, California (the “200/220 Penobscot Space”) and approximately 37,900 square feet of space located at 400 Penobscot Drive, Redwood City, California (the “400 Penobscot Space”) (the 200/220 Penobscot Space and the 400 Penobscot Space are collectively referred to as the “Penobscot Space”), and approximately 11,200 square feet of space located at 501 Chesapeake Drive, Redwood City, California (the “501 Chesapeake Space”). We entered into the initial lease with MetLife for our facilities in Redwood City in 2004 and the RWC Lease has been amended multiple times since then to adjust the leased space and terms of the Lease. In February 2019, we entered into an Eighth Amendment to the Lease (the “Eighth Amendment”) with MetLife with respect to the Penobscot Space and the 501 Chesapeake Space to extend the term of the Lease for additional periods. Pursuant to the Eighth Amendment, the term of the lease of the Penobscot Space has been extended through May 2027. The lease term for the 501 Chesapeake Space has been extended to May 2029. We have one (1) option to extend the term of the lease for the Penobscot Space for five (5) years, and one (1) separate option to extend the term of the lease for the 501 Chesapeake Space for five (5) years. Pursuant to the terms of the RWC Lease, we exercised our right to deliver a letter of credit in lieu of a security deposit. The letter of credit is collateralized by deposit balances held by the bank in the amount of $1.1 million a s of March 31, 2023 and December 31, 2022, and are recorded as non-current restricted cash on the unaudited condensed consolidated balance sheets. In January 2021, we entered into a lease agreement with ARE-San Francisco No. 63, LLC ("ARE") to lease a portion of a facility consisted of approximately 36,593 rentable square feet in San Carlos, California to serve as additional office and research and development laboratory space (the "San Carlos Space"). The lease has a 10-year term from the lease commencement date of November 30, 2021 with one option to extend the term for an additional period of 5 years. We have provided ARE with a $0.5 million security deposit in the form of a letter of credit and is recorded as non-current restricted cash on the consolidated balance sheets. We are required to restore certain areas of the Redwood City and San Carlos facilities that we are renting to their original form. We are expensing the asset retirement obligation over the terms of the respective leases. We review the estimated obligation each reporting period and make adjustments if our estimates change. We recorded asset retirement obligations of $0.5 million as of March 31, 2023 and December 31, 2022, which are included in other liabilities on the unaudited condensed consolidated balance sheets. Accretion expense related to our asset retirement obligations was nominal in the three months ended March 31, 2023 and 2022. Lease and other information Lease costs, amounts included in measurement of lease obligations and other information related to non-cancellable operating leases and finance leases were as follows (in thousands):
| Three Months Ended March 31,
| 2023 |  | 2022
Finance lease costs | $ | — |  |  | $ | 18 |
Operating lease cost | 1,830 |  |  | 1,831 |
Short-term lease costs (1) | — |  |  | 30 |
Total lease cost (2) | $ | 1,830 |  |  | $ | 1,879 |
(1) Short-term lease costs on leases with terms of over one month and less than one year. (2) The Company had no variable lease costs.
Other information: | Operating Leases
Weighted-average remaining lease term (in years) | 7.0 years
Weighted-average discount rate | 5.4 | %
| Three Months Ended March 31,
Cash paid (in thousands): | 2023 |  | 2022
Operating cash flows from operating leases | $ | 1,882 |  |  | $ | 1,022 |
As of March 31, 2023, our maturity analysis of annual undiscounted cash flows of the non-cancellable operating leases are as follows (in thousands):
Years Ending December 31, |  | Operating Leases
2023 (remaining 9 months) |  | $ | 5,686 |
2024 |  | 7,783 |
2025 |  | 8,004 |
2026 |  | 8,232 |
2027 |  | 5,835 |
Thereafter |  | 14,871 |
Total minimum lease payments |  | 50,411 |
Less: imputed interest |  | 8,074 |
Lease obligations |  | $ | 42,337 |
Reconciliation of operating lease liabilities as shown within the unaudited condensed consolidated balance sheets:
Current portion of lease obligations - Operating leases |  | $ | 5,492 |
Long-term lease obligations - Operating leases |  | 36,845 |
Total operating lease liabilities |  | $ | 42,337 |
Other Commitments We enter into supply and service arrangements in the normal course of business. Supply arrangements are primarily for fixed-price manufacture and supply. Service agreements are primarily for the development of manufacturing processes and certain studies. Commitments under service agreements are subject to cancellation at our discretion which may require payment of certain cancellation fees. The timing of completion of service arrangements is subject to variability in estimates of the time required to complete the work. The following table provides quantitative data regarding our other commitments. Future minimum payments reflect amounts that we expect to pay including potential obligations under services agreements subject to risk of cancellation by us (in thousands):
| Payments Due by Period
| Total |  | 2023 (Remaining 9 Months) |  | 2024 and Thereafter
Development and manufacturing services agreements | $ | 3,734 |  |  | $ | 2,543 |  |  | $ | 1,191 |
Facility maintenance agreement | 2,491 |  |  | 2,491 |  |  | — |
Total other commitments | $ | 6,225 |  |  | $ | 5,034 |  |  | $ | 1,191 |
Credit Facility In June 30, 2017, we entered into a credit facility (the “Credit Facility”) with Western Alliance Bank consisting of term loans (“Term Debt”) up to $10.0 million, and advances (“Advances”) under a revolving line of credit ("Revolving Line of Credit") up to $5.0 million with an accounts receivable borrowing base of 80% of eligible accounts receivable. The right to take draws on the Term Debt expired on December 31, 2022. We terminated the loan agreement with Western Alliance Bank in March 2023. Legal Proceedings We may be involved in legal actions in the ordinary course of business, including inquiries and proceedings concerning business practices and intellectual property infringement, employee relations and other claims. We will recognize a loss contingency in the condensed consolidated financial statements when it is probable a liability has been incurred and the amount of the loss can be reasonably estimated. We will disclose any loss contingencies that do not meet both conditions if there is a reasonable possibility that a material loss may have been incurred. Gain contingencies are not recorded until they are realized. Indemnifications We are required to recognize a liability for the fair value of any obligations we assume upon the issuance of a guarantee. We have certain agreements with licensors, licensees and collaborators that contain indemnification provisions. In such provisions, we typically agree to indemnify the licensor, licensee and collaborator against certain types of third-party claims. The maximum amount of the indemnifications is not limited. We accrue for known indemnification issues when a loss is probable and can be reasonably estimated. There were no accruals for expenses related to indemnification issues for any periods presented.

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