Exhibit 32.1
Certification Pursuant to 18 U.S.C. Sec. 1350
In connection with the filing by CommonWealth REIT (the “Company”) of the Quarterly Report on Form 10-Q for the period ended June 30, 2012 (the “Report”), each of the undersigned hereby certifies, to the best of his knowledge:
1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and
2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.
/s/ Barry M. Portnoy |
| /s/ Adam D. Portnoy |
Barry M. Portnoy |
| Adam D. Portnoy |
Managing Trustee |
| President and Managing Trustee |
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/s/ John C. Popeo |
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John C. Popeo |
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Treasurer and Chief Financial Officer |
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Date: August 9, 2012 |
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