v3.26.1
Leased Properties
 12 Months Ended
Dec. 31, 2025
Leases [Abstract]  
Leased Properties LEASED PROPERTIES
Finance Lease - Clean Room Space
On July 24, 2024, the Company entered into a scope of work (the "SOW") with an unrelated third party for a controlled clean room space in Massachusetts. The SOW became effective upon the execution of an associated License and Services Agreement (the "LSA"), which governs the SOW. On February 25, 2025, the parties entered into a termination agreement related to the original LSA and SOW and concurrently entered into a revised LSA and revised SOW, collectively, the Clean Room Agreement, primarily to clarify the location of the clean room subject to the arrangement. The term of the Clean Room Agreement is 22 months and commenced on March 1, 2025. Fixed payments are due at the beginning of each calendar quarter and variable amounts related to support services are due monthly based on services provided during the preceding month. Upon execution of the SOW, the Company made a prepayment of approximately $459,000. The Clean Room Agreement may be renewed each year and if renewed, the fixed payment amount may increase yearly by up to 5%.
The Company determined that the Clean Room Agreement is a finance lease. On the commencement date, the Company recorded an initial finance lease ROU asset and related lease liability of approximately $3.3 million and $2.8 million, respectively. Included in the $3.3 million finance ROU asset is the $459,000 prepayment which was reclassified to the finance lease ROU asset on the commencement date. The lease does not provide an implicit rate and therefore the Company used its incremental borrowing rate as the discount rate when measuring the finance lease liability. The incremental borrowing rate represents an estimate of the interest rate the Company would incur at lease commencement to borrow an amount equal to the lease payments on a collateralized basis over the term of the lease within a particular currency environment. The Company used an incremental borrowing rate consisting of the current prime rate plus 200 basis points for its finance lease. During 2025, the parties executed two change orders primarily to amend the total contract consideration under the lease arrangement. The Company evaluated these amendments and concluded they represented a lease modification. As such, the finance lease ROU asset and finance lease liability were remeasured using an incremental borrowing rate at the date of the modification resulting in a decrease of approximately $83,000 to both the ROU asset and corresponding finance lease liability.
Operating Leases - General Office Space
The Company's lease for its corporate headquarters (3,169 square feet of office space) commenced in July 2018 and, as a result of an extension entered into in March 2024, expires on October 31, 2027. The extension entered into in March 2024 resulted in additional operating lease liabilities and ROU assets of approximately $0.4 million in March 2024.
MBI, a wholly-owned subsidiary the Company, leases general office and laboratory space in Massachusetts. The lease commenced on November 1, 2023 for a term of three years, expiring on December 31, 2026. On
December 18, 2025, the term of the lease was extended to December 31, 2027, which resulted in additional operating lease liabilities and ROU assets of approximately $0.4 million.
Under the terms of each lease, the lessee pays base annual rent (subject to an annual fixed percentage increase), plus property taxes, and other normal and necessary expenses, such as utilities, repairs, and maintenance. The Company evaluates renewal options at lease inception and on an ongoing basis and includes renewal options that it is reasonably certain to exercise in its expected lease terms when classifying leases and measuring lease liabilities. The leases do not require material variable lease payments, residual value guarantees or restrictive covenants.
The leases do not provide an implicit rate, and therefore the Company uses its incremental borrowing rate as the discount rate when measuring operating lease liabilities. The incremental borrowing rate represents an estimate of the interest rate the Company would incur at lease commencement to borrow an amount equal to the lease payments on a collateralized basis over the term of the lease within a particular currency environment. The Company uses an incremental borrowing rate consisting of the current prime rate plus 200 basis points for operating leases. The depreciable lives of operating leases and leasehold improvements are limited by the expected lease term.
Aggregate Lease Information
The components of lease cost recorded in the Company's consolidated statements of operations and comprehensive loss were as follows:
December 31,
20252024
Operating lease cost
$828,036 $766,257 
Finance lease cost
Amortization of finance lease
1,472,366 — 
Interest on finance lease liability
152,475 — 
Variable lease cost124,205 172,337 
Total lease cost
$2,577,082 $938,594 

Maturities of the Company's finance and operating lease liabilities as of December 31, 2025 were as follows:
Year
Operating Leases
Finance Lease
Total
2026$680,081 $1,529,500 $2,209,581 
2027583,046 — 583,046 
Total lease payments
1,263,127 1,529,500 2,792,627 
Less: amount representing interest
(101,210)(35,398)(136,608)
Present value of lease liabilities
$1,161,917 $1,494,102 $2,656,019 
The weighted-average remaining lease terms and discount rates related to the Company's leases were as follows:
December 31,
20252024
Weighted-average remaining lease term (in years)
Operating leases
1.922.42
Finance lease
1.00— 
Weighted-average discount rate
Operating leases
9.1 %10.5 %
Finance lease
9.5 %— 
Supplemental cash flow information related to the Company's leases was as follows:
December 31,
20252024
Cash paid for amounts included in the measurement of lease liabilities
Financing cash flows from finance lease
$1,264,188 $— 
Operating cash flows from finance lease
$152,475 $— 
Operating cash flows from operating leases
$659,626 $615,325 
Leased Properties LEASED PROPERTIES
Finance Lease - Clean Room Space
On July 24, 2024, the Company entered into a scope of work (the "SOW") with an unrelated third party for a controlled clean room space in Massachusetts. The SOW became effective upon the execution of an associated License and Services Agreement (the "LSA"), which governs the SOW. On February 25, 2025, the parties entered into a termination agreement related to the original LSA and SOW and concurrently entered into a revised LSA and revised SOW, collectively, the Clean Room Agreement, primarily to clarify the location of the clean room subject to the arrangement. The term of the Clean Room Agreement is 22 months and commenced on March 1, 2025. Fixed payments are due at the beginning of each calendar quarter and variable amounts related to support services are due monthly based on services provided during the preceding month. Upon execution of the SOW, the Company made a prepayment of approximately $459,000. The Clean Room Agreement may be renewed each year and if renewed, the fixed payment amount may increase yearly by up to 5%.
The Company determined that the Clean Room Agreement is a finance lease. On the commencement date, the Company recorded an initial finance lease ROU asset and related lease liability of approximately $3.3 million and $2.8 million, respectively. Included in the $3.3 million finance ROU asset is the $459,000 prepayment which was reclassified to the finance lease ROU asset on the commencement date. The lease does not provide an implicit rate and therefore the Company used its incremental borrowing rate as the discount rate when measuring the finance lease liability. The incremental borrowing rate represents an estimate of the interest rate the Company would incur at lease commencement to borrow an amount equal to the lease payments on a collateralized basis over the term of the lease within a particular currency environment. The Company used an incremental borrowing rate consisting of the current prime rate plus 200 basis points for its finance lease. During 2025, the parties executed two change orders primarily to amend the total contract consideration under the lease arrangement. The Company evaluated these amendments and concluded they represented a lease modification. As such, the finance lease ROU asset and finance lease liability were remeasured using an incremental borrowing rate at the date of the modification resulting in a decrease of approximately $83,000 to both the ROU asset and corresponding finance lease liability.
Operating Leases - General Office Space
The Company's lease for its corporate headquarters (3,169 square feet of office space) commenced in July 2018 and, as a result of an extension entered into in March 2024, expires on October 31, 2027. The extension entered into in March 2024 resulted in additional operating lease liabilities and ROU assets of approximately $0.4 million in March 2024.
MBI, a wholly-owned subsidiary the Company, leases general office and laboratory space in Massachusetts. The lease commenced on November 1, 2023 for a term of three years, expiring on December 31, 2026. On
December 18, 2025, the term of the lease was extended to December 31, 2027, which resulted in additional operating lease liabilities and ROU assets of approximately $0.4 million.
Under the terms of each lease, the lessee pays base annual rent (subject to an annual fixed percentage increase), plus property taxes, and other normal and necessary expenses, such as utilities, repairs, and maintenance. The Company evaluates renewal options at lease inception and on an ongoing basis and includes renewal options that it is reasonably certain to exercise in its expected lease terms when classifying leases and measuring lease liabilities. The leases do not require material variable lease payments, residual value guarantees or restrictive covenants.
The leases do not provide an implicit rate, and therefore the Company uses its incremental borrowing rate as the discount rate when measuring operating lease liabilities. The incremental borrowing rate represents an estimate of the interest rate the Company would incur at lease commencement to borrow an amount equal to the lease payments on a collateralized basis over the term of the lease within a particular currency environment. The Company uses an incremental borrowing rate consisting of the current prime rate plus 200 basis points for operating leases. The depreciable lives of operating leases and leasehold improvements are limited by the expected lease term.
Aggregate Lease Information
The components of lease cost recorded in the Company's consolidated statements of operations and comprehensive loss were as follows:
December 31,
20252024
Operating lease cost
$828,036 $766,257 
Finance lease cost
Amortization of finance lease
1,472,366 — 
Interest on finance lease liability
152,475 — 
Variable lease cost124,205 172,337 
Total lease cost
$2,577,082 $938,594 

Maturities of the Company's finance and operating lease liabilities as of December 31, 2025 were as follows:
Year
Operating Leases
Finance Lease
Total
2026$680,081 $1,529,500 $2,209,581 
2027583,046 — 583,046 
Total lease payments
1,263,127 1,529,500 2,792,627 
Less: amount representing interest
(101,210)(35,398)(136,608)
Present value of lease liabilities
$1,161,917 $1,494,102 $2,656,019 
The weighted-average remaining lease terms and discount rates related to the Company's leases were as follows:
December 31,
20252024
Weighted-average remaining lease term (in years)
Operating leases
1.922.42
Finance lease
1.00— 
Weighted-average discount rate
Operating leases
9.1 %10.5 %
Finance lease
9.5 %— 
Supplemental cash flow information related to the Company's leases was as follows:
December 31,
20252024
Cash paid for amounts included in the measurement of lease liabilities
Financing cash flows from finance lease
$1,264,188 $— 
Operating cash flows from finance lease
$152,475 $— 
Operating cash flows from operating leases
$659,626 $615,325