UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
____________________________________________________ 
FORM 10-Q/A
Amendment No. 1
____________________________________________________  
(Mark One)

x	QUARTERLY REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT of 1934	
For the Quarterly Period Ended June 30, 2011
OR

o	TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT of 1934	
For the Transition Period From                      To                     
Commission file number 001-34626
PIEDMONT OFFICE REALTY TRUST, INC.
(Exact name of registrant as specified in its charter)
 ____________________________________________________ 

Maryland	 	58-2328421	
(State or other jurisdiction of incorporation or organization)	 	(I.R.S. Employer Identification Number)	

11695 Johns Creek Parkway
Ste. 350
Johns Creek, Georgia 30097
(Address of principal executive offices)
(Zip Code)
(770) 418-8800
(Registrant’s telephone number, including area code)
N/A
(Former name, former address, and former fiscal year, if changed since last report)
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes   x     No    o
Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes   x  No   o
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer”, “accelerated filer”, and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

 	Large Accelerated filer x	 	Accelerated filer o	
 	Non-Accelerated filer o     (Do not check if a smaller reporting company)        	 	Smaller reporting company o	
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o No  x
Number of shares outstanding of the Registrant’s
only class of common stock, as of August 8, 2011:
172,826,725 shares

 	

EXPLANATORY NOTE
The sole purpose of this Amendment No. 1 to Piedmont Office Realty Trust, Inc.’s (the “Registrant’s”) Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2011 is to furnish Exhibit 101 to Form 10-Q in accordance with Rule 405 of Regulation S-T. Exhibit 101 consists of the following materials from the Registrant’s Form 10-Q for the quarterly period ended June 30, 2011, filed with the Securities and Exchange Commission on August 9, 2011, formatted in XBRL (eXtensible Business Reporting Language):

101.INS	 	XBRL Instance Document	
 	 	 	
101.SCH	 	XBRL Taxonomy Extension Schema Document	
 	 	 	
101.CAL	 	XBRL Taxonomy Extension Calculation Linkbase Document	
 	 	 	
101.DEF	 	XBRL Taxonomy Definition Linkbase Document	
 	 	 	
101.LAB	 	XBRL Taxonomy Extension Label Linkbase Document	
 	 	 	
101.PRE	 	XBRL Taxonomy Extension Presentation Linkbase Document	
No other changes have been made to the Registrant’s Form 10-Q. This Amendment No. 1 does not reflect any subsequent events occurring after the original filing date of the Form 10-Q or modify or update in any way disclosures made in the original filing.

EXHIBIT INDEX
TO
SECOND QUARTER 2011
FORM 10-Q
OF
PIEDMONT OFFICE REALTY TRUST, INC.

Exhibit
Number	  	Description of Document	
3.1	
 	  	Third Articles of Amendment and Restatement of Piedmont Office Realty Trust, Inc. (the “Company”) (incorporated by reference to Exhibit 3.1 to the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2009 filed on March 16, 2010) *	
 	 	 	
3.2	
 	  	Articles of Amendment of the Company effective June 30, 2011 (incorporated by reference to Exhibit 3.2 to the Company's Current Report on Form 8-K filed on July 6, 2011) *	
 	 	 	
3.3	
 	 	Articles Supplementary of the Company effective June 30, 2011 (incorporated by reference to Exhibit 3.1 to the Company's Current Report on Form 8-K filed on July 6, 2011) *	
 	 	 	
3.4	
 	 	Amended and Restated Bylaws of the Company (incorporated by reference to Exhibit 3.2 to the Company’s current Report on Form 8-K filed on January 22, 2010) *	
 	 	 	
10.1	
 	  	Loan Agreement dated as of July 11, 2007 by and between Broadway 500 West Monroe Fee LLC (now known as Piedmont 500 West Monroe Fee LLC) (“Mortgage Borrower”) and Morgan Stanley Mortgage Capital Holdings LLC (as predecessor in interest to Wells Fargo Bank, N.A., as Trustee, for the Certificate holders of Morgan Stanley Capital I Inc. Commercial Mortgage Pass-Through Certificates Trust, Series 2007-XLF9) (“Mortgage Lender”) (incorporated by reference to Exhibit 10.1 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2011, filed on May 5, 2011) *	
 	 	 	
10.2	
 	  	Promissory Note dated as of July 11, 2007 by and between Mortgage Borrower and Mortgage Lender (incorporated by reference to Exhibit 10.2 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2011, filed on May 5, 2011) *	
 	 	 	
10.3	
 	  	First Omnibus Amendment to Loan Agreement and Other Loan Documents (Mortgage Loan) dated as of August 15, 2007, by and among Mortgage Borrower and Mortgage Lender (incorporated by reference to Exhibit 10.3 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2011, filed on May 5, 2011) *	
 	 	 	
10.4	
 	  	Amended and Restated Promissory Note dated as of August 15, 2007, by and among Mortgage Borrower and Mortgage Lender (incorporated by reference to Exhibit 10.4 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2011, filed on May 5, 2011) *	
 	 	 	
10.5	
 	  	Mezzanine A Loan Agreement dated as of July 11, 2007, by and between Broadway 500 West Monroe Mezz I LLC (now known as Piedmont 500 West Monroe Mezz I LLC) (“Mezzanine Borrower”) and Morgan Stanley Mortgage Capital Holdings LLC (as predecessor in interest to 500 W Monroe Mezz I-B, LLC and Deutsche Genossenschafts-Hypothekenbank AG) (“Mezzanine Lender”) (incorporated by reference to Exhibit 10.5 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2011, filed on May 5, 2011) *	
 	 	 	
10.6	
 	  	Promissory Note (Mezzanine A Loan) dated as of July 11, 2007, by and between Mezzanine Borrower and Mezzanine Lender (incorporated by reference to Exhibit 10.6 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2011, filed on May 5, 2011) *	
 	 	 	
10.7	
 	  	First Omnibus Amendment to Loan Agreement and Other Loan Documents (Mezzanine A Loan), dated August 15, 2007, by and between Mezzanine Borrower and Mezzanine Lender (incorporated by reference to Exhibit 10.7 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2011, filed on May 5, 2011) *	
 	 	 	
10.8	
 	  	Amended and Restated Promissory Note (Mezzanine A Loan), dated August 15, 2007, by and between Mezzanine Borrower and Mezzanine Lender (incorporated by reference to Exhibit 10.8 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2011, filed on May 5, 2011) *	
 	 	 	
10.9	
 	  	Second Omnibus Amendment to Loan Agreement and Other Loan Documents (Mezzanine A Loan), dated as of February 26, 2008, by and between Mezzanine Borrower and Mezzanine Lender (incorporated by reference to Exhibit 10.9 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2011, filed on May 5, 2011) *	

 	
 	 	 	 	
10.10	
 	  	Second Amended and Restated Promissory Note (Mezzanine A Loan), by and between Mezzanine Borrower and Mezzanine Lender (incorporated by reference to Exhibit 10.10 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2011, filed on May 5, 2011) *	
 	 	 	
10.11	
 	  	Mezzanine A Loan Participation Agreement, dated as of February 26, 2008, by and between Mezzanine Lender, Morgan Stanley Mortgage Capital Holdings LLC (as predecessor in interest to Deutsche Genossenschafts-Hypothekenbank AG), as Participation A Holder, Morgan Stanley Mortgage Capital Holdings LLC (as predecessor in interest to 500 W Monroe Mezz I-B, LLC), as Participation B Holder, and LaSalle Bank National Association, as Custodian (incorporated by reference to Exhibit 10.11 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2011, filed on May 5, 2011) *	
 	 	 	
10.12	
 	  	Amendment Number One to the Wells Real Estate Investment Trust, Inc. 2007 Omnibus Incentive Plan *	
 	 	 	
31.1	
 	  	Rule 13a-14(a)/15d-14(a) Certification, executed by Donald A. Miller, CFA, Principal Executive Officer of the Company *	
 	 	 	
31.2	
 	  	Rule 13a-14(a)/15d-14(a) Certification, executed by Robert E. Bowers, Principal Financial Officer of the Company *	
 	 	 	
32.1	
 	  	Certification required by Rule 13a-14(b)/15d-14(b) and Section 1350 of Chapter 63 of Title 18 of the United States Code, executed by Donald A. Miller, CFA, Chief Executive Officer and President of the Company *	
 	 	 	
32.2	
 	  	Certification required by Rule 13a-14(b)/15d-14(b) and Section 1350 of Chapter 63 of Title 18 of the United States Code, executed by Robert E. Bowers, Chief Financial Officer and Executive Vice-President of the Company *	
 	 	 	
101. INS	
 	 	XBRL Instance Document **	
 	 	 	
101. SCH	
 	 	XBRL Taxonomy Extension Schema **	
 	 	 	
101. CAL	
 	 	XBRL Taxonomy Extension Calculation Linkbase **	
 	 	 	
101. DEF	
 	 	XBRL Taxonomy Extension Definition Linkbase **	
 	 	 	
101.LAB	
 	 	XBRL Taxonomy Extension Label Linkbase **	
 	 	 	
101.PRE	
 	 	XBRL Taxonomy Extension Presentation Linkbase **	
 	 	 	
*	
 	 	Filed as an exhibit to the Registrant's Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2011	
 	 	 	
**	
 	 	Furnished with this Form 10-Q/A	

SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

 	 	 	 	
 	 	PIEDMONT OFFICE REALTY TRUST, INC.	
 	 	(Registrant)	
 	 	 	 	
Dated:	August 26, 2011	By:	/s/ Robert E. Bowers	
 	 	 	Robert E. Bowers	
 	 	 	Chief Financial Officer and Executive Vice President	
 	 	 	(Principal Financial Officer and Duly Authorized Officer)