10. Operating Leases

The Company leases its office and facilities in Boston, Massachusetts under a non-cancellable operating lease agreement that continues through December 31, 2032. Cash paid for operating lease liabilities were $1.7 million and $1.6 million during the six months ended June 30, 2026 and 2025, respectively and $0.8 million and $0.8 million during the three months ended June 30, 2026 and 2025, respectively, which is included in operating cash flows within the accompanying unaudited condensed consolidated statements of cash flows.

The Company subleased approximately 17,729 square feet of office and laboratory space in the building located at 321 Harrison Avenue, Boston, Massachusetts. The Company was jointly and severally liable under the head lease and has accounted for the sublease as an operating lease. The lease term commenced on March 24, 2023 and ended May 23, 2026. The Company recognized sublease income of $0.4 million and $0.7 million for the three months ended June 30, 2026 and 2025, respectively and $1.0 million and $1.2 million for the six months ended June 30, 2026 and 2025, respectively.