11.
Leases

The Company leases certain of its facilities under non-cancellable operating leases expiring at various dates into 2027.

On December 15, 2020, the Company entered into a lease agreement with Tennieh LLC to lease approximately 9,800 square feet of office and lab space in San Francisco, California (the "Laboratory Lease Agreement"). The Laboratory Lease Agreement was for a period of five years commencing approximately February 1, 2021 and ending January 31, 2026. In April 2025, the Company exercised its option to extend the lease term by an additional year, resulting in a revised expiration date of January 31, 2027. The modification was accounted under ASC 842, resulting in a remeasurement of the lease liability and a corresponding $0.8 million increase to the ROU asset. The incremental borrowing rate was also updated as part of the remeasurement. According to the terms of the Laboratory Lease Agreement, the Company paid a $0.4 million security deposit and is required to pay monthly rent and common area charges. No additional security deposit was paid in connection with the amendment.

On August 17, 2023, the Company entered into a sublease agreement with Dropbox, Inc. to sublease approximately 6,713 square feet of office space in San Francisco, California (the "Dropbox Sublease Agreement"). The Dropbox Sublease Agreement was for a period of two years commencing on September 5, 2023 and ending December 31, 2025. In June 2025, the Company exercised its option to extend the lease term by an additional year, resulting in a revised expiration date of December 31, 2026. The modification was accounted under ASC 842, resulting in a remeasurement of the lease liability and a corresponding $0.1 million increase to the ROU asset. The incremental borrowing rate was also updated as part of the remeasurement. According to the terms of the Dropbox Sublease Agreement, the Company paid a $0.1 million security deposit and is required to pay monthly rent and common area charges.

On August 23, 2023, the Company entered into a lease agreement with The Cambridge Redevelopment Authority to lease approximately 4,020 square feet of office space in Cambridge, Massachusetts (the "Cambridge Lease Agreement"). The Cambridge Lease Agreement is for a period of three years commencing on September 15, 2023 and ending September 14, 2026. According to the terms of the Cambridge Lease Agreement, the Company paid a less than $0.1 million security deposit and is required to pay monthly rent and common area charges. The lease was accounted for under Topic 842 and the Company recorded ROU asset and lease liability of $0.7 million and $0.7 million, respectively, at inception of the lease.

The following table summarizes total lease expense during the years ended December 31, 2025 and 2024 (in thousands):

 

 

 

Years Ended December 31,

 

 

 

2025

 

 

2024

 

Straight-line operating lease expense

 

$

 

1,165

 

 

$

 

1,150

 

Variable lease expense

 

 

 

360

 

 

 

 

382

 

Total operating lease expense

 

$

 

1,525

 

 

$

 

1,532

 

 

The following table summarizes supplemental cash flow information during the years ended December 31, 2025 and 2024 (in thousands):

 

 

 

Years Ended December 31,

 

 

 

2025

 

 

2024

 

Cash paid for amounts included measurement of lease liabilities:

 

 

 

 

 

 

 

 

Operating cash flows from operating leases

 

$

 

1,233

 

 

$

 

1,162

 

Supplemental noncash information on lease liability arising from obtaining a right-use-asset

 

$

 

896

 

 

$

 

 

 

 

The following table summarizes the Company’s future minimum lease payments and reconciliation of lease liabilities as of December 31, 2025 (in thousands):

 

Years Ending December 31

 

 

 

 

2026

 

$

 

1,172

 

2027

 

 

 

69

 

Total future minimum lease payments

 

 

 

1,241

 

Less: Interest

 

 

 

(48

)

Total lease liabilities at present value

 

 

 

1,193

 

Lease liabilities, current

 

 

 

1,124

 

Lease liabilities, non-current

 

$

 

69

 

 

The following table summarizes lease term and discount rate as of December 31, 2025 and 2024:

 

 

 

December 31,

 

 

 

2025

 

 

2024

 

Weighted-average remaining lease term (years)

 

 

1.01

 

 

 

1.27

 

Weighted-average discount rate

 

 

9.00

%

 

 

9.00

%

Historical Timeline

Fiscal YearFiled
2025Mar 16, 2026Showing above
2024Mar 18, 2025
2023Mar 11, 2024
2022Mar 9, 2023
2021Feb 28, 2022

About Leases Disclosures

Lease disclosures under ASC 842 provide a comprehensive view of a company's leased asset portfolio, including the split between operating and finance leases, discount rates used to present-value future payments, and the maturity schedule of lease obligations. This section reveals a significant source of off-balance-sheet commitments that were largely hidden before the current standard.

Key signals: the weighted-average discount rate affects the size of recorded lease liabilities — a higher rate reduces the reported obligation, so compare the chosen rate against the company's incremental borrowing rate. The operating versus finance lease mix affects both EBITDA and operating income presentation. Watch the maturity table for concentration risk: large payment cliffs in specific years may create cash flow pressure. Variable lease payments excluded from the liability measurement represent real obligations that do not appear on the balance sheet. Compare total lease costs against prior-year operating lease expense to assess the true economic burden.