Alkermes plc

We lease approximately 14,600 square feet of corporate office space in Dublin, Ireland, which houses our corporate headquarters. In 2023, we exercised our option to extend the lease term for a four-year period. This extended lease expires in 2027 and does not include an additional tenant option to further extend the term.

We lease approximately 231,000 square feet of office and laboratory space in Waltham, Massachusetts. This lease, which commenced in January 2020, expires in 2035 and includes a tenant option to extend the term for an additional ten-year period. We serve as the guarantor of a lease assigned to Mural Oncology, Inc. for a facility in Waltham, Massachusetts with approximately 180,000 square feet of corporate offices, administrative areas and laboratories. This lease expires in 2026 and includes a tenant option to extend the term for an additional five-year period.

We lease approximately 7,000 square feet of corporate office and administrative space in Washington, DC. This lease expires in 2029 and includes a tenant option to extend the term for an additional five-year period.

We own the Athlone Facility (approximately 400,000 square feet). In December 2023, we announced our entry into an agreement to sell this facility, which is expected to occur in mid-2024. We own a manufacturing facility in Wilmington, Ohio (approximately 375,000 square feet).

We believe that our current facilities are suitable and adequate for our current and near-term preclinical, clinical and commercial requirements.