Leases	6 Months Ended
Jun. 30, 2026
Leases [Abstract]
Leases	13. Leases The Company’s leases consist primarily of real estate, equipment, and vehicle leases. On January 1, 2013, the Company entered into lease arrangements with 65 Dan Road SPE, LLC, 85 Dan Road Associates, LLC, Dan Road Equity I, LLC and 275 Dan Road SPE, LLC for office and laboratory space in Canton, Massachusetts (the “Related-Party Leases”). 65 Dan Road SPE, LLC, 85 Dan Road Associates, LLC, Dan Road Equity I, LLC and 275 Dan Road SPE, LLC are related parties as the owners of these entities are also directors, former directors and/or stockholders of the Company. In August 2021, the Company purchased the 275 Dan Road property. The remaining three Related-Party Leases were subsequently renewed with various expiration dates through December 31, 2032. In November 2024, the Company entered into a lease for a facility in Smithfield, Rhode Island, comprising manufacturing and office space (the “Smithfield Facility”). The initial lease term is approximately sixteen years. The undiscounted minimum lease payments are $102,645, and the Company is entitled to a tenant improvement allowance of up to $18,376 for its planned build out of the manufacturing space. The lease of the office space commenced at lease inception. The build out of the manufacturing space will be completed in two phases. Phase 1 of the build-out was substantially completed and the associated lease component commenced in December 2025. During the three months ended June 30, 2026, the Company terminated certain research and development (“R&D”) programs and related vendor agreements, a portion of which was accounted for as operating leases. The total net charge of $5.6 million was recorded in research and development expense and included a write-off of $1.4 million of prepaid and other current assets and a write-off of $1.4 million of operating lease right-of-use assets, net. The remaining balance is recorded within accrued expenses and other current liabilities as of June 30, 2026.

Leases

6 Months Ended

Jun. 30, 2026

13. Leases

The Company’s leases consist primarily of real estate, equipment, and vehicle leases.

On January 1, 2013, the Company entered into lease arrangements with 65 Dan Road SPE, LLC, 85 Dan Road Associates, LLC, Dan Road Equity I, LLC and 275 Dan Road SPE, LLC for office and laboratory space in Canton, Massachusetts (the “Related-Party Leases”). 65 Dan Road SPE, LLC, 85 Dan Road Associates, LLC, Dan Road Equity I, LLC and 275 Dan Road SPE, LLC are related parties as the owners of these entities are also directors, former directors and/or stockholders of the Company. In August 2021, the Company purchased the 275 Dan Road property. The remaining three Related-Party Leases were subsequently renewed with various expiration dates through December 31, 2032.

In November 2024, the Company entered into a lease for a facility in Smithfield, Rhode Island, comprising manufacturing and office space (the “Smithfield Facility”). The initial lease term is approximately sixteen years. The undiscounted minimum lease payments are $102,645, and the Company is entitled to a tenant improvement allowance of up to $18,376 for its planned build out of the manufacturing space. The lease of the office space commenced at lease inception. The build out of the manufacturing space will be completed in two phases. Phase 1 of the build-out was substantially completed and the associated lease component commenced in December 2025.

During the three months ended June 30, 2026, the Company terminated certain research and development (“R&D”) programs and related vendor agreements, a portion of which was accounted for as operating leases. The total net charge of $5.6 million was recorded in research and development expense and included a write-off of $1.4 million of prepaid and other current assets and a write-off of $1.4 million of operating lease right-of-use assets, net. The remaining balance is recorded within accrued expenses and other current liabilities as of June 30, 2026.