Item 2. Properties

Below is a summary of our owned and leased properties as of December 31, 2020.

Massachusetts

In Cambridge, MA we own approximately 508,000 square feet of real estate space, consisting of a building that houses a research laboratory and a cogeneration plant totaling approximately 263,000 square feet and a building that contains research, development and quality laboratories totaling approximately 245,000 square feet.

In addition, we lease a total of approximately 1,169,000 square feet in Massachusetts, which is summarized as follows:

• 800,000 square feet in Cambridge, MA, which is comprised of offices for our corporate headquarters and other administrative and development functions and laboratories, of which 265,000 square feet is subleased by multiple companies for general office space, laboratories and manufacturing facilities;

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• 357,000 square feet of office space in Weston, MA, of which 174,000 square feet is subleased through the remaining term of our lease agreement; and

• 12,000 square feet of office space in Waltham, MA.

Our Massachusetts lease agreements expire at various dates through the year 2028.

North Carolina

In RTP, NC we own approximately 1,040,000 square feet of real estate space, which is summarized as follows:

• 357,000 square feet of laboratory and office space;

• 206,000 square foot multi-purpose facility, including an ASO manufacturing suite and administrative space;

• 175,000 square feet related to a large-scale biologics manufacturing facility;

• 105,000 square feet related to a small-scale biologics manufacturing facility;

• 84,000 square feet of warehouse space and utilities;

• 70,000 square feet related to a parenteral fill-finish facility; and

• 43,000 square feet related to a large-scale purification facility.

In addition, we lease approximately 65,000 square feet of warehouse space and 103,000 square feet of office space in Durham, NC. Our North Carolina lease agreements expire at various dates through the year 2031.

Switzerland

In order to support our future growth and drug development pipeline, we are building a large-scale biologics manufacturing facility in Solothurn, Switzerland. We expect this facility to be partially operational during the first half of 2021. Upon completion, the facility will include 393,000 square feet related to a large-scale biologics manufacturing facility, 290,000 square feet of warehouse, utilities and support space and 51,000 square feet of administrative space.

Other International

We lease office space in Baar, Switzerland, our international headquarters; the U.K.; Germany; France; Japan; Canada and numerous other countries. Our international lease agreements expire at various dates through the year 2030.