The Company acts as a lessee under all its lease agreements. In January 2024 the Company relocated its corporate headquarters and laboratory facilities to Louisville, Colorado. The Company also leases laboratory and office space in De Soto, Kansas, under a non-cancelable lease agreement for approximately 9,066 square feet that is set to expire in October 2026. The Company also holds various copier and equipment leases under non-cancelable lease agreements that expire in the next one to three years.

On March 11, 2022, the Company entered into a Lease Agreement (the Lease) with Centennial Valley Properties I, LLC and subsequently assigned to CVP I Owner LLC, a Colorado limited liability company (the Landlord) for office and laboratory space in Louisville, Colorado (the Leased Premises). The initial term of the Lease is twelve years (the Initial Term) from the commencement date, which was April 1, 2023. The Company has two renewal options to extend the term of the Lease for an additional seven- or ten-year terms for each renewal.

Under the Lease, the Company will lease approximately 79,980 square feet at the Leased Premises. The Company will pay base rent over the life of the Lease beginning at approximately $227,000 per month and escalating, based on fixed escalation provisions, to approximately $326,000 per month, plus certain operating expenses and taxes. The Company's obligation to pay base rent shall be abated, commencing as of the Commencement Date and ending on and including the date that is 12 months after the Commencement Date (the Abated Rent Period). Further, the Company's obligation to pay base rent with respect to a portion of the area of the Lease Premises equal to 19,980 square feet shall be abated (the Partial Abated Rent), commencing as of the day after the end of the Abated Rent Period and ending on and including the date that is 24 months after the Commencement Date (the Partial Abated Rent Period). Pursuant to a work letter entered by the parties in connection with the Lease, the Landlord will contribute an aggregate of $18.8 million toward the cost of construction and improvements for the Leased Premises and the Company exercised its option for an additional tenant improvement allowance of $2.0 million (the Extra Allowance Amount). The Company will repay the Extra Allowance Amount actually funded by the Landlord in equal monthly payments with an interest rate of 6% per year over the Initial Term excluding any part of the

Abated Rent Period or Partial Abated Rent Period, which shall start to accrue on the date that the Landlord first disburses the Extra Allowance Amount. The Company made an accounting policy election to reduce the right-of-use asset and lease liability at lease commencement because the Lease specifies a maximum level of reimbursement for tenant improvements which are probable of being incurred and within the Company's control. Due to the tenant improvement allowances at the accounting lease commencement date and rent abatement periods described above, the Company expects the lease liability to accrete to approximately $25.5 million by March 2025. The Company utilized the total $20.8 million in tenant improvement allowances for capital expenditures for leasehold improvements throughout the year ended December 31, 2023.

The Lease includes various covenants, indemnities, defaults, termination rights, and other provisions customary for lease transactions of this nature. During the three months ended September 30, 2022, a $5.0 million cash collateralized letter of credit under the operating lease agreement was released and the funds were subsequently transferred to the Landlord as a refundable deposit (subject to contingent reduction over the term of the lease) to secure the performance of the Company’s obligations. The $5.0 million refundable deposit is included within 'Other long-term assets' in the condensed balance sheet as of March 31, 2024.

Operating lease expense for all operating leases was $0.6 million and $1.1 million for the three months ended March 31, 2024 and 2023, respectively. As of March 31, 2024, the weighted-average remaining lease term and discount rate associated with our operating leases were 10.8 years and 11.4%, respectively.

Future minimum lease payments associated with our operating leases were as follows (in thousands):


	As of March 31, 2024
Remainder of 2024	$	2,011
2025		3,876
2026		4,147
2027		4,063
2028		4,151
2029 and thereafter		28,113
Total future minimum lease payments		46,361
Less amount representing interest		(20,742	)
Total lease liabilities	$	25,619