EQC Equity Commonwealth

CommonWealth REIT (NYSE: CWH) today announced that the characteristics of dividends for 2011 income tax reporting purposes are as follows:

Common Shares

                Dividend Allocation Per Share             Unrecaptured     Declaration Record Paid/Payable Dividends Ordinary Qualified Capital Section 1250 Return of Dates Dates Dates Per Share Income Dividend Gain Gain Capital 01/05/11 01/21/11 02/22/11 $0.50 $0.3295 $0.0000 $0.0161 $0.0367 $0.1177 04/05/11 04/21/11 05/24/11 $0.50 $0.3295 $0.0000 $0.0161 $0.0367 $0.1177 07/01/11 07/11/11 08/25/11 $0.50 $0.3295 $0.0000 $0.0161 $0.0367 $0.1177 10/05/11 10/21/11 11/22/11 $0.50 $0.3295 $0.0000 $0.0161 $0.0367 $0.1177 TOTALS: $2.00 $1.3180 $0.0000 $0.0644 $0.1468 $0.4708 100.00% 65.90% 0% 3.22% 7.34% 23.54%  

The CWH common share CUSIP number is 203233101. This information represents final income allocations.

Preferred C Shares

                Dividend Allocation Per Share             Unrecaptured     Declaration Record Paid/Payable Dividends Ordinary Qualified Capital Section 1250 Return of Dates Dates Dates Per Share Income Dividend Gain Gain Capital 01/05/11 02/01/11 02/15/11 $0.4453 $0.3838 $0.0000 $0.0187 $0.0427 $0.0000 04/05/11 05/01/11 5/16/2011 $0.4453 $0.3838 $0.0000 $0.0187 $0.0427 $0.0000 07/01/11 08/01/11 08/15/11 $0.4453 $0.3838 $0.0000 $0.0187 $0.0427 $0.0000 10/05/11 11/01/11 11/15/11 $0.4453 $0.3838 $0.0000 $0.0187 $0.0427 $0.0000 TOTALS: $1.7812 $1.5352 $0.0000 $0.0748 $0.1708 $0.0000 100.00% 86.20% 0% 4.20% 9.60% 0%  

The CWH Series C preferred share CUSIP number is 203233309. This information represents final income allocations.

Preferred D Shares

                Dividend Allocation Per Share             Unrecaptured     Declaration Record Paid/Payable Dividends Ordinary Qualified Capital Section 1250 Return of Dates Dates Dates Per Share Income Dividend Gain Gain Capital 01/05/11 02/01/11 02/15/11 $0.4063 $0.3502 $0.0000 $0.0171 $0.0390 $0.0000 04/05/11 05/01/11 05/16/11 $0.4063 $0.3502 $0.0000 $0.0171 $0.0390 $0.0000 07/01/11 08/01/11 08/15/11 $0.4063 $0.3502 $0.0000 $0.0171 $0.0390 $0.0000 10/05/11 11/01/11 11/15/11 $0.4063 $0.3502 $0.0000 $0.0171 $0.0390 $0.0000 TOTALS: $1.6252 $1.4008 $0.0000 $0.0684 $0.1560 $0.0000 100.00% 86.19% 0% 4.21% 9.60% 0%  

The CWH Series D preferred share CUSIP number is 20323340810. This information represents final income allocations.

Preferred E Shares

                Dividend Allocation Per Share             Unrecaptured     Declaration Record Paid/Payable Dividends Ordinary Qualified Capital Section 1250 Return of Dates Dates Dates Per Share Income Dividend Gain Gain Capital 07/01/11 08/01/11 08/15/11 $0.3726 $0.3212 $0.0000 $0.0157 $0.0358 $0.0000 10/05/11 11/01/11 11/15/11 $0.4531 $0.3906 $0.0000 $0.0191 $0.0435 $0.0000 TOTALS: $0.8257 $0.7118 $0.0000 $0.0348 $0.0793 $0.0000 100.00% 86.20% 0% 4.20% 9.60% 0%  

The CWH Series E preferred share CUSIP number is 203233606. This information represents final income allocations.

CommonWealth REIT is a real estate investment trust, or REIT, which primarily owns office and industrial properties located throughout the United States. CWH is headquartered in Newton, Massachusetts.

A Maryland Real Estate Investment Trust with transferable shares of beneficial interest listed on the New York Stock Exchange.

No shareholder, Trustee or officer is personally liable for any act or obligation of the Trust.