Equity Commonwealth (EQC), formerly CommonWealth REIT (CWH), is a real estate investment trust (REIT). The Company's primary business is the ownership and operation of real estate, including office and industrial buildings and leased industrial land. The Company owns approximately 145 properties, which include 251 buildings with a combined area of approximately 41 million square feet. The Company also owns approximately 2 million square feet of space in 11 properties, which include 11 buildings located in Australia. Approximately 14% of its leased square feet and approximately 14% of its annualized rental revenue expires by December 31, 2015. The Company's principal source of funds for its operations is rents from tenants at its properties, such as Telstra Corporation Limited, Office Depot, Inc., Expedia, Inc., PNC Financial Services Group, the United States Government, Royal Dutch Shell plc, J.P. Morgan Chase & Co. and United Healthcare Services Inc. among others.