PTC THERAPEUTICS, INC.

Our principal facility consists of approximately 180,000 square feet of office space and shell condition, modifiable space located at 500 Warren Corporate Center Drive in Warren, New Jersey, that we occupy under a lease that expires in 2039. The rental term for such facility commenced on June 1, 2022, with an initial term of seventeen years followed by three consecutive five-year renewal periods at our option. Additionally, we lease 103,000 square feet of laboratory and office space in Bridgewater, New Jersey. The rental term for such facility commenced on May 1, 2020 with an initial term of seven years and two consecutive five year renewal periods at our option. We lease approximately 11,500 square feet of office space in Dublin, Ireland, that we occupy under a lease that expires in 2034. Additionally, we lease approximately 5,000 square feet of office space in Sao Paulo, Brazil, that we occupy under a lease that expires in 2028. We also lease additional laboratory and office space in the U.S. and other countries to support our operations as a global organization, but these leases are not material to us.