Foghorn Therapeutics signs new 9-year lease for 72,846 sq ft HQ in Watertown, MA, terminates Cambridge lease

Foghorn Therapeutics Inc.

New lease at 99 Coolidge Avenue, Watertown for 72,846 sq ft; annual base rent starts at $87/sq ft with partial abatement in years 1-2.
Rent commencement expected October 1, 2026, followed by 3% annual escalations starting October 1, 2027.
Terminates 81,441 sq ft lease at 500 Technology Square, Cambridge (originally through Sept 2028) via Lease Termination Agreement.
Security deposit of $2 million; two 5-year renewal options; space for HQ and R&D operations.
Early occupancy of office portion targeted for December 15, 2025, with full delivery of build-out by December 15, 2025.

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