−Removed: Our headquarters are located at 100 Technology Square, Cambridge, Massachusetts, where we occupy approximately 69,000 square feet of research
−Removed: and development, laboratory and office space.
+Added: Our headquarters are located at 100 Technology Square, Cambridge, Massachusetts, where we occupy approximately 69,000 square feet of research and development, laboratory and office space.
This lease expires in February 2028.
−Removed: We have subleased approximately 27,000 square feet of office space at our headquarters to third parties.
−Removed: The subleases expire in the fourth quarter of 2020.
−Removed: believe that our office and laboratory space is sufficient to meet our needs for the foreseeable future and that suitable additional space will be available as and when needed.
+Added: We have subleased approximately 27,000 square feet of office space at our headquarters to two third parties.
+Added: The subleases expire in the third quarter of 2021 and second quarter of 2022.
+Added: We believe that our office and laboratory space is sufficient to meet our needs for the foreseeable future and that suitable additional space will be available as and when needed.
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.