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Corporate Office Properties Trust

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FY2012 Annual Report · Corporate Office Properties Trust
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(cid:86) Annual Report 2012

Letter to Shareholders

“Luck is when preparation meets opportunity.” 

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square feet of potential demand for space at three of our 

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are engaged in defense information technology and national 

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Roger A. Waesche, Jr.

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specialized niche. The need for these tenants to establish or 

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(cid:86)(cid:85)(cid:3)(cid:75)(cid:80)(cid:90)(cid:87)(cid:86)(cid:90)(cid:80)(cid:85)(cid:78)(cid:3)(cid:86)(cid:77)(cid:3)(cid:72)(cid:87)(cid:87)(cid:89)(cid:86)(cid:95)(cid:80)(cid:84)(cid:72)(cid:91)(cid:76)(cid:83)(cid:96)(cid:3)(cid:11)(cid:25)(cid:23)(cid:23)(cid:3)(cid:84)(cid:80)(cid:83)(cid:83)(cid:80)(cid:86)(cid:85)(cid:3)(cid:86)(cid:77)(cid:3)(cid:73)(cid:92)(cid:80)(cid:83)(cid:75)(cid:80)(cid:85)(cid:78)(cid:90)(cid:3)

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(cid:94)(cid:79)(cid:80)(cid:74)(cid:79)(cid:3)(cid:91)(cid:79)(cid:76)(cid:3)(cid:42)(cid:86)(cid:84)(cid:87)(cid:72)(cid:85)(cid:96)(cid:3)(cid:91)(cid:72)(cid:89)(cid:78)(cid:76)(cid:91)(cid:76)(cid:75)(cid:3)(cid:11)(cid:28)(cid:24)(cid:25)(cid:3)(cid:84)(cid:80)(cid:83)(cid:83)(cid:80)(cid:86)(cid:85)(cid:3)(cid:86)(cid:77)(cid:3)(cid:85)(cid:86)(cid:85)(cid:20)(cid:90)(cid:91)(cid:89)(cid:72)(cid:91)(cid:76)(cid:78)(cid:80)(cid:74)(cid:3)

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(cid:73)(cid:96)(cid:3)(cid:91)(cid:79)(cid:76)(cid:3)(cid:76)(cid:85)(cid:75)(cid:3)(cid:86)(cid:77)(cid:3)(cid:25)(cid:23)(cid:24)(cid:26)(cid:21)(cid:3)(cid:48)(cid:85)(cid:90)(cid:91)(cid:76)(cid:72)(cid:75)(cid:19)(cid:3)(cid:80)(cid:85)(cid:3)(cid:25)(cid:23)(cid:24)(cid:25)(cid:3)(cid:94)(cid:76)(cid:3)(cid:75)(cid:80)(cid:90)(cid:87)(cid:86)(cid:90)(cid:76)(cid:75)(cid:3)(cid:86)(cid:77)(cid:3)(cid:26)(cid:28)(cid:3)
buildings containing 2.3 million square feet for an aggregate 

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(cid:75)(cid:80)(cid:90)(cid:87)(cid:86)(cid:90)(cid:76)(cid:75)(cid:3)(cid:86)(cid:77)(cid:3)(cid:85)(cid:76)(cid:72)(cid:89)(cid:83)(cid:96)(cid:3)(cid:11)(cid:27)(cid:23)(cid:23)(cid:3)(cid:84)(cid:80)(cid:83)(cid:83)(cid:80)(cid:86)(cid:85)(cid:3)(cid:86)(cid:77)(cid:3)(cid:91)(cid:79)(cid:76)(cid:3)(cid:11)(cid:28)(cid:24)(cid:25)(cid:3)(cid:84)(cid:80)(cid:83)(cid:83)(cid:80)(cid:86)(cid:85)(cid:3)(cid:86)(cid:77)(cid:3)(cid:86)(cid:87)(cid:76)(cid:89)(cid:72)(cid:91)(cid:80)(cid:85)(cid:78)(cid:3)

(cid:87)(cid:89)(cid:86)(cid:87)(cid:76)(cid:89)(cid:91)(cid:80)(cid:76)(cid:90)(cid:3)(cid:80)(cid:85)(cid:3)(cid:91)(cid:79)(cid:76)(cid:3)(cid:58)(cid:57)(cid:55)(cid:19)(cid:3)(cid:72)(cid:85)(cid:75)(cid:3)(cid:79)(cid:72)(cid:75)(cid:3)(cid:74)(cid:86)(cid:84)(cid:87)(cid:83)(cid:76)(cid:91)(cid:76)(cid:75)(cid:3)(cid:76)(cid:85)(cid:91)(cid:80)(cid:91)(cid:83)(cid:80)(cid:85)(cid:78)(cid:3)(cid:84)(cid:92)(cid:74)(cid:79)(cid:3)(cid:86)(cid:77)(cid:3)

(cid:91)(cid:79)(cid:76)(cid:3)(cid:58)(cid:57)(cid:55)(cid:3)(cid:83)(cid:72)(cid:85)(cid:75)(cid:3)(cid:77)(cid:86)(cid:89)(cid:3)(cid:90)(cid:72)(cid:83)(cid:76)(cid:3)(cid:91)(cid:86)(cid:3)(cid:89)(cid:76)(cid:91)(cid:72)(cid:80)(cid:83)(cid:3)(cid:72)(cid:85)(cid:75)(cid:3)(cid:89)(cid:76)(cid:90)(cid:80)(cid:75)(cid:76)(cid:85)(cid:91)(cid:80)(cid:72)(cid:83)(cid:3)(cid:80)(cid:85)(cid:93)(cid:76)(cid:90)(cid:91)(cid:86)(cid:89)(cid:90)(cid:21)(cid:3)(cid:45)(cid:89)(cid:86)(cid:84)(cid:3)

(cid:72)(cid:85)(cid:3)(cid:86)(cid:87)(cid:76)(cid:89)(cid:72)(cid:91)(cid:80)(cid:85)(cid:78)(cid:3)(cid:76)(cid:585)(cid:74)(cid:80)(cid:76)(cid:85)(cid:74)(cid:96)(cid:3)(cid:90)(cid:91)(cid:72)(cid:85)(cid:75)(cid:87)(cid:86)(cid:80)(cid:85)(cid:91)(cid:19)(cid:3)(cid:91)(cid:79)(cid:76)(cid:3)(cid:85)(cid:76)(cid:72)(cid:89)(cid:83)(cid:96)(cid:3)(cid:11)(cid:27)(cid:23)(cid:23)(cid:3)(cid:84)(cid:80)(cid:83)(cid:83)(cid:80)(cid:86)(cid:85)(cid:3)
of disposition properties contained smaller tenants and, 

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concentration of strategic properties, which are those that are 

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the Company has increased its percentage of annual rental 

continued on inside back cover

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in the real estate industry. In 2012, we also continued our 

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commitment of being a leading contributor in the communities 

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our troops through such programs as Wounded Warriors, 

Fisher House, Military Heroes, Hope for the Warriors and 

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so that we are in a position to grow earnings from a smaller 

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broader federal budgetary issues currently being debated, we 

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that 2013 will present us with ample opportunity because the 

intelligence aspects of national security are and will remain top 

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position the Company for growth.

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Roger A. Waesche, Jr.

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We also deployed sale proceeds into acquiring one operating 

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with proceeds from asset sales, we decreased our total debt 

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(cid:91)(cid:86)(cid:20)(cid:78)(cid:89)(cid:86)(cid:90)(cid:90)(cid:3)(cid:72)(cid:90)(cid:90)(cid:76)(cid:91)(cid:3)(cid:93)(cid:72)(cid:83)(cid:92)(cid:76)(cid:3)(cid:89)(cid:72)(cid:91)(cid:80)(cid:86)(cid:3)(cid:77)(cid:89)(cid:86)(cid:84)(cid:3)(cid:27)(cid:32)(cid:21)(cid:31)(cid:12)(cid:3)(cid:72)(cid:91)(cid:3)(cid:91)(cid:79)(cid:76)(cid:3)(cid:73)(cid:76)(cid:78)(cid:80)(cid:85)(cid:85)(cid:80)(cid:85)(cid:78)(cid:3)(cid:86)(cid:77)(cid:3)(cid:25)(cid:23)(cid:24)(cid:25)(cid:3)

(cid:91)(cid:86)(cid:3)(cid:27)(cid:25)(cid:21)(cid:30)(cid:12)(cid:3)(cid:73)(cid:96)(cid:3)(cid:96)(cid:76)(cid:72)(cid:89)(cid:20)(cid:76)(cid:85)(cid:75)(cid:19)(cid:3)(cid:72)(cid:85)(cid:75)(cid:3)(cid:80)(cid:84)(cid:87)(cid:89)(cid:86)(cid:93)(cid:76)(cid:75)(cid:3)(cid:86)(cid:92)(cid:89)(cid:3)(cid:75)(cid:76)(cid:73)(cid:91)(cid:3)(cid:91)(cid:86)(cid:3)(cid:72)(cid:75)(cid:81)(cid:92)(cid:90)(cid:91)(cid:76)(cid:75)(cid:3)

UNITED STATES
 SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549
FORM 10-K 

(Mark one)

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2012

or

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 1-14023
Corporate Office Properties Trust
(Exact name of registrant as specified in its charter)

Maryland
(State or other jurisdiction of
incorporation or organization)

6711 Columbia Gateway Drive, Suite 300, Columbia, MD

(Address of principal executive offices)

23-2947217
(IRS Employer
Identification No.)

21046
(Zip Code)

 Registrant’s telephone number, including area code:  (443) 285-5400
________________________________________
Securities registered pursuant to Section 12(b) of the Act:

(Title of Each Class)

(Name of Exchange on Which Registered)

(Title of Each Class)

(Name of Exchange on Which Registered

Common Shares of beneficial interest, $0.01 par value

Series H Cumulative Redeemable Preferred Shares of beneficial interest, $0.01 par value

Series J Cumulative Redeemable Preferred Shares of beneficial interest, $0.01 par value

Series L Cumulative Redeemable Preferred Shares of beneficial interest, $0.01 par value

New York Stock Exchange

New York Stock Exchange

New York Stock Exchange

New York Stock Exchange

Securities registered pursuant to Section 12(g) of the Act: None
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Exchange Act. Yes
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 

 No

 No

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  

 No

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 during the preceding 12 months (or for such shorter period that the registrant was required to submit and 
post such files).  Yes  

 No

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of 

registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.
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 (Check one):

Large accelerated filer 

  Accelerated filer 

  Non-accelerated filer 

Smaller reporting company 

(Do not check if a smaller reporting
company)

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act) Yes  
The aggregate market value of the voting and nonvoting common equity held by non-affiliates of the registrant was approximately $1.7 billion, as calculated using 

 No

the closing price of the common shares of beneficial interest on the New York Stock Exchange and our outstanding shares as of June 29, 2012.  For purposes of 
calculating this amount only, affiliates are defined as Trustees, executive owners and beneficial owners of more than 10% of the registrant's outstanding common shares 
of beneficial interest, $0.01 par value. At January 28, 2013, 81,106,909 of the registrant’s common shares of beneficial interest were outstanding.

Portions of the annual shareholders’ report of the registrant for the year ended December 31, 2012 are incorporated by reference into Parts I and II of this Form 10-

K and portions of the proxy statement of the registrant for its 2013 Annual Meeting of Shareholders to be filed within 120 days after the end of the fiscal year covered 
by this Form 10-K are incorporated by reference into Part III of this Form 10-K.

 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Form 10-K

PART I

BUSINESS

ITEM 1.
ITEM 1A RISK FACTORS
ITEM 1B. UNRESOLVED STAFF COMMENTS
ITEM 2.

PROPERTIES

ITEM 3.
ITEM 4. MINE SAFETY DISCLOSURES

LEGAL PROCEEDINGS

PART II

ITEM 5. MARKET FOR REGISTRANT'S COMMON EQUITY, RELATED STOCKHOLDER
MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

ITEM 6.
ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

SELECTED FINANCIAL DATA

RESULTS OF OPERATIONS

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
ITEM 8.

FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

ITEM 9.

CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND

FINANCIAL DISCLOSURE

ITEM 9A. CONTROLS AND PROCEDURES
ITEM 9B OTHER INFORMATION

PART III

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE
ITEM 11. EXECUTIVE COMPENSATION
ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

AND RELATED STOCKHOLDER MATTERS

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR

INDEPENDENCE

ITEM 14. PRINCIPAL ACCOUNTANT FEES AND SERVICES

PART IV

ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

SIGNATURES

2

PAGE

4 

7

16

17

21

22

22

24

26

53 

54 

54

54

55

55

55

55

55

55 

55

61

 
 
 
 
FORWARD-LOOKING STATEMENTS

This Form 10-K contains “forward-looking” statements, as defined in the Private Securities Litigation Reform Act of 1995, 

that are based on our current expectations, estimates and projections about future events and financial trends affecting the 
financial condition and operations of our business.  Forward-looking statements can be identified by the use of words such as 
“may,” “will,” “should,” “could,” “believe,” “anticipate,” “expect,” “estimate,” “plan” or other comparable terminology.
Forward-looking statements are inherently subject to risks and uncertainties, many of which we cannot predict with accuracy 
and some of which we might not even anticipate. Although we believe that the expectations, estimates and projections 
reflected in such forward-looking statements are based on reasonable assumptions at the time made, we can give no assurance 
that these expectations, estimates and projections will be achieved.  Future events and actual results may differ materially from 
those discussed in the forward-looking statements.  Important factors that may affect these expectations, estimates and 
projections include, but are not limited to: 

•

•
•

•
•

•
•

•

•

•
•
•

general economic and business conditions, which will, among other things, affect office property and data center demand 
and rents, tenant creditworthiness, interest rates, financing availability and property values; 
adverse changes in the real estate markets, including, among other things, increased competition with other companies; 
governmental actions and initiatives, including risks associated with the impact of a government shutdown or budgetary 
reductions or impasses, such as a reduction in rental revenues, non-renewal of leases and/or a curtailment of demand for 
additional space by our strategic customers;
our ability to borrow on favorable terms; 
risks of real estate acquisition and development activities, including, among other things, risks that development projects 
may not be completed on schedule, that tenants may not take occupancy or pay rent or that development or operating costs 
may be greater than anticipated;
our ability to sell properties included in our Strategic Reallocation Plan; 
risks of investing through joint venture structures, including risks that our joint venture partners may not fulfill their 
financial obligations as investors or may take actions that are inconsistent with our objectives;
changes in our plans for properties or views of market economic conditions or failure to obtain development rights, either 
of which could result in recognition of significant impairment losses;
our ability to satisfy and operate effectively under Federal income tax rules relating to real estate investment trusts and 
partnerships;
the dilutive effects of issuing additional common shares;
our ability to achieve projected results; and
environmental requirements.

For further information on factors that could affect the company and the statements contained herein, you should refer to the 
section below entitled “Item 1A. Risk Factors.” We undertake no obligation to update or supplement forward-looking 
statements.

3

Item 1. Business

OUR COMPANY

PART I

General. We are an office real estate investment trust (“REIT”) that focuses primarily on serving the specialized 

requirements of United States Government agencies and defense contractors, most of whom are engaged in defense information 
technology and national security related activities. We generally acquire, develop, manage and lease office and data center 
properties concentrated in large office parks located near knowledge-based government demand drivers and/or in targeted
markets or submarkets in the Greater Washington, DC/Baltimore region. As of December 31, 2012, our investments in real 
estate included the following:

•
•

•

•

208 operating office properties totaling 18.8 million square feet that were 88% occupied;
13 office properties under construction or redevelopment, or for which we were contractually committed to construct, that 
we estimate will total approximately 1.7 million square feet upon completion, including two partially operational 
properties included above;
land held or under pre-construction totaling 1,694 acres (including 561 acres controlled but not owned) that we believe are 
potentially developable into approximately 19.3 million square feet; and
a partially operational, wholesale data center which upon completion and stabilization is expected to have a critical load of 
18 megawatts.

We conduct almost all of our operations through our operating partnership, Corporate Office Properties, L.P. (the 
“Operating Partnership”), a Delaware limited partnership, of which we are the managing general partner. The Operating 
Partnership owns real estate both directly and through subsidiary partnerships and limited liability companies (“LLCs”). The
Operating Partnership also owns subsidiaries that provide real estate services such as property management, construction and 
development services primarily for our properties but also for third parties.

Interests in our Operating Partnership are in the form of common and preferred units. As of December 31, 2012, we 
owned 95% of the outstanding common units and 97% of the outstanding preferred units in our Operating Partnership. The
remaining common and preferred units in our Operating Partnership were owned by third parties, which included certain 
members of our Board of Trustees.

We believe that we are organized and have operated in a manner that satisfies the requirements for taxation as a REIT
under the Internal Revenue Code of 1986, as amended, and we intend to continue to operate in such a manner.  Provided we 
continue to qualify for taxation as a REIT, we generally will not be subject to Federal income tax on our taxable income that is 
distributed to our shareholders. A REIT is subject to a number of organizational and operational requirements, including a 
requirement that it distribute to its shareholders at least 90% of its annual taxable income (excluding net capital gains).

Our executive offices are located at 6711 Columbia Gateway Drive, Suite 300, Columbia, Maryland 21046 and our 

telephone number is (443) 285-5400.

Our Internet address is www.copt.com. We make available on our Internet website free of charge our annual reports on 
Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and amendments to those reports filed or furnished 
pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) as soon as 
reasonably possible after we file such material with the Securities and Exchange Commission (the “SEC”).  In addition, we 
have made available on our Internet website under the heading “Corporate Governance” the charters for our Board of Trustees'
Audit, Nominating and Corporate Governance, Compensation and Investment Committees, as well as our Corporate 
Governance Guidelines, Code of Business Conduct and Ethics and Code of Ethics for Financial Officers. We intend to make 
available on our website any future amendments or waivers to our Code of Business Conduct and Ethics and Code of Ethics for 
Financial Officers within four business days after any such amendments or waivers. The information on our Internet site is not 
part of this report.

The SEC maintains an Internet website that contains reports, proxy and information statements and other information 
regarding issuers that file electronically with the SEC. This Internet website can be accessed at www.sec.gov. The public may 
also read and copy paper filings that we have made with the SEC at the SEC's Public Reference Room, located at 100 F Street, 
NE, Washington, DC 20549.  Information on the operation of the Public Reference Room may be obtained by calling (800) 
SEC-0330.

4

Significant 2012 Developments

During 2012, we:

•

•

•
•
•

•

•

•

•

•

•

•

disposed of 35 operating properties totaling 2.3 million square feet and non-operating properties for aggregate transaction 
values totaling $313.6 million.  The $291 million in net proceeds from these sales were used primarily to pay down our 
Revolving Credit Facility;
approved a plan to dispose of our office properties and developable land in Greater Philadelphia, Pennsylvania within the 
next four years because the properties no longer meet our strategic investment criteria;
acquired for $48.3 million a property in Herndon, Virginia totaling 202,000 square feet that was 100% leased;
placed into service an aggregate of 371,000 square feet in four newly constructed office properties; 
issued 6.9 million Series L Cumulative Preferred Shares (the “Series L Preferred Shares”) at a price of $25.00 per share for 
net proceeds of $165.7 million after underwriting discounts but before offering expenses. These shares are nonvoting and 
redeemable for cash at $25.00 per share at our option on or after June 27, 2017. The net proceeds were used to pay down 
our Revolving Credit Facility and for general corporate purposes;
redeemed all of our Series G Preferred Shares of beneficial interest (the “Series G Preferred Shares”) at a price of $25.00
per share, or $55.0 million in the aggregate, plus accrued and unpaid dividends thereon through the date of redemption;
completed a public offering of 8.6 million common shares of beneficial interest (“common shares”) at a price of $24.75 per 
share for net proceeds of $204.9 million after underwriter discounts but before offering expenses;
established an at-the-market (“ATM”) stock offering program under which we may, from time to time, offer and sell 
common shares in “at the market” stock offerings having an aggregate gross sales price of up to $150.0 million; 
entered into unsecured term loan agreements, under which we borrowed $370 million in the aggregate.  The net proceeds 
from these borrowings were used to pay down our Revolving Credit Facility;
exercised our right to reduce the lenders’ aggregate commitment under our unsecured revolving credit facility from $1.0 
billion to $800 million, with the ability, subject to certain conditions, for us to increase the lenders’ aggregate commitment 
to $1.3 billion;
finished the period with our portfolio of office properties 87.8% occupied and our Same Office Properties 89.1% occupied; 
and
completed the transition of Roger A. Waesche, Jr. as our President and Chief Executive Officer following the retirement of 
Randall M. Griffin effective March 31, 2012.

Business and Growth Strategies

Our primary objectives are to achieve sustainable long-term growth in results of operations and to maximize long-term 

shareholder value. This section sets forth key components of our business and growth strategies that we have in place to 
support these objectives.

Business Strategies

Customer Strategy: We focus on serving the specialized requirements of United States Government agencies and defense 

contractors, most of whom are engaged in defense information technology and national security related activities. These
tenants’ missions generally pertain more to knowledge-based activities (such as cyber security, research and development and 
other highly technical defense and security areas) than to force structure (troops) and weapon system production. A high 
percentage of our revenue is concentrated in office and data center properties supporting this strategy, and we expect to further 
increase this concentration level through our:

•

•
•

•

•

properties’ (existing buildings and land held for future development) proximity to defense installations and other 
knowledge-based government demand drivers, and our willingness to expand to new locations with similar proximities; 
strong relationships with tenants engaged in knowledge-based defense and security activities;
depth of collective team knowledge, experience and capabilities in developing, operating and securing office properties 
and single user data centers that meet the United States Government’s Force Protection requirements;
record for providing service that exceeds customer expectations both in terms of the quality of the space we provide and 
our level of responsiveness to their needs. We have won the CEL & Associates, Inc. award for quality service and tenant 
satisfaction among nationwide office operators in the large owner category every year since 2004. We believe that 
operating with such an emphasis on service enables us to be the landlord of choice with high quality customers and 
contributes to high levels of customer loyalty and retention; and
continued future investment focused on properties for United States Government agencies and defense contractors.

5

Market Strategy: In order to support our customer strategy, we focus on owning properties located near defense 

installations and other knowledge-based government demand drivers. We also focus on owning properties in targeted markets 
or submarkets in the Greater Washington, DC/Baltimore region with strong growth attributes. The growth attributes we look 
for in selecting these markets or submarkets include, among others: (1) proximity to large demand drivers; (2) strong 
demographics; (3) attractiveness to high quality tenants; (4) continued potential for growth and stability in economic down 
cycles; and (5) future acquisition and development opportunities. We typically focus on owning and operating office properties 
in large business parks located outside of central business districts. We believe that such parks generally attract long-term, 
high-quality tenants seeking to attract and retain quality work forces because they are typically situated along major 
transportation routes with easy access to support services, amenities and residential communities. 

Capital Strategy: Our capital strategy is aimed at maintaining a flexible capital structure in order to facilitate growth and 

performance in the face of differing market conditions in the most cost-effective manner by:

•

•

using debt comprised primarily of fixed-rate debt (including the effect of interest rate swaps) from banks and institutional 
lenders along with debt available from public debt markets, such as our exchangeable senior notes;
using equity raised through issuances of common and preferred shares of beneficial interest, issuances of common and 
preferred units in our Operating Partnership and, to a lesser extent, joint venture structures for certain investments;
• managing our debt by monitoring, among other things: (1) our debt levels relative to our overall capital structure; (2) the 
relationship of certain measures of earnings to certain financing cost requirements (commonly referred to as coverage 
ratios); (3) the relationship of our variable-rate debt to our total debt; and (4) the timing of debt maturities to ensure that 
maturities in any year do not exceed levels that we believe we can refinance;
using proceeds from sales under our disposition strategy to fund our investment activities, including our development 
pipeline, and to reduce overall debt; and
continuously evaluating the ability of our capital resources to accommodate our plans for future growth.

•

•

Growth Strategies

Property Development and Acquisition Strategy: We pursue property development and acquisition opportunities for 
properties that fit our customer and market strategies. As a result, the focus of our development and acquisition activities 
includes properties that are either: (1) located near defense installations and other knowledge-based government demand 
drivers; or (2) located in markets or submarkets in the Greater Washington, DC/Baltimore region that we believe meet the 
criteria set forth above in our market strategy. We may also develop or acquire properties that do not align with our customer 
or market strategies but which we believe provide opportunity for favorable returns on investment given the associated risks.

We pursue development activities as market conditions and leasing opportunities support favorable risk-adjusted returns on 
investment. We typically seek to make acquisitions at attractive yields and below replacement cost, or that otherwise meet our 
strategic objectives. We also seek to increase operating cash flow of certain acquisitions by repositioning the properties and 
capitalizing on existing below market leases and expansion opportunities.

Disposition Strategy: We seek to dispose of properties and other investments that no longer meet our strategic objectives in 

order to remain aligned with such objectives, maximize our return on invested capital and be better positioned for long term 
growth.

Internal Growth Strategy: We aggressively manage our portfolio to maximize the operating value and performance of each 

property through: (1) proactive property management and leasing; (2) achieving operating efficiencies through increasing 
economies of scale and, where possible, aggregating vendor contracts to achieve volume pricing discounts; and (3) renewing 
tenant leases and re-tenanting at increased rents where market conditions permit. We also aim to develop and operate our 
properties in a manner that minimizes adverse impact on the environment by: (1) constructing new buildings designed to use 
resources with a higher level of efficiency and lower impact on human health and the environment during their life cycles than 
conventional buildings through our participation in the U.S. Green Building Council’s Leadership in Energy and Environmental 
Design (“LEED”) program; (2) retrofitting select existing office properties to operate more efficiently; and (3) registering our 
property portfolio in Energy Star, a joint program of the U.S. Environmental Protection Agency and the U.S. Department of 
Energy that focuses on protecting the environment through energy efficient products and practices.

Industry Segments

We operate in two primary industries: commercial office properties and our wholesale data center. We classify our 
properties containing data center space as commercial office real estate when tenants significantly fund the data center 

6

infrastructure costs. At December 31, 2012, our commercial office real estate operations were in geographical segments, as set 
forth below: 

Baltimore/Washington Corridor (generally defined as the Maryland counties of Howard and Anne Arundel);
Northern Virginia (defined as Fairfax County, Virginia);
San Antonio, Texas;

•
•
•
• Washington, DC - Capitol Riverfront;
•
•
•
•
•

St. Mary’s & King George Counties (in Maryland and Virginia, respectively); 
Greater Baltimore, Maryland (generally defined as the Maryland counties of Baltimore and Harford and Baltimore City); 
Suburban Maryland (defined as the Maryland counties of Montgomery and Prince George’s);
Colorado Springs, Colorado;  and
Greater Philadelphia, Pennsylvania (in Blue Bell, Pennsylvania). 

As of December 31, 2012, 173 of our office properties, or 82% of our square feet in operations, were located in the Greater 
Washington, DC/Baltimore region, which includes all the segments set forth above except for San Antonio, Colorado Springs 
and Greater Philadelphia.  Our wholesale data center, which is comprised of one property in Manassas, Virginia, is reported as a 
separate segment.

For information relating to our segments, you should refer to Note 16 to our consolidated financial statements, which is 

included in a separate section at the end of this Annual Report on Form 10-K beginning on page F-1.

Employees

As of December 31, 2012, we had 384 employees, none of whom were parties to collective bargaining agreements. We

believe that our relations with our employees are good.

Competition

The commercial real estate market is highly competitive.  Numerous commercial properties compete with our properties 

for tenants.  Some of the properties competing with ours may be newer or in more desirable locations, or the competing 
properties’ owners may be willing to accept lower rents than are acceptable to us. We also compete with our own tenants, many 
of whom have the right to sublease their space. The competitive environment for leasing is affected considerably by a number 
of factors including, among other things, changes in economic factors and supply of and demand for space. These factors may 
make it difficult for us to lease existing vacant space and space associated with future lease expirations at rental rates that are 
sufficient to meeting our short-term capital needs. 

We compete for the acquisition of commercial properties with many entities, including other publicly-traded commercial 

REITs.  Many of our competitors for such acquisitions have substantially greater financial resources than ours.  In addition, our 
competitors may be willing to accept lower returns on their investments.  If our competitors prevent us from buying properties 
that we have targeted for acquisition, we may not be able to meet our property acquisition goals. 

We also compete with many entities, including other publicly-traded commercial REITs, for capital. This competition 

could adversely affect our ability to raise capital we may need to fulfill our capital strategy.

In addition, we also compete with other sellers of commercial properties for a limited number of buyers of properties. This

competition could adversely affect our ability to complete property dispositions under existing or future disposition plans.

Item 1A.  Risk Factors

Set forth below are risks and uncertainties relating to our business and the ownership of our securities. You should 
carefully consider each of these risks and uncertainties and all of the information in this Annual Report on Form 10-K and its 
Exhibits, including our consolidated financial statements and notes thereto for the year ended December 31, 2012, which are 
included in a separate section at the end of this report beginning on page F-1.

Our performance and value are subject to risks associated with our properties and with the real estate industry.

Real estate investments are subject to various risks and fluctuations in value and demand, many of which are beyond our 
control. Our economic performance and the value of our real estate assets may decline due to conditions in the general 
economy and the real estate business which, in turn, could have an adverse effect on our financial position, results of 

7

operations, cash flows and ability to make expected distributions to our shareholders. These conditions include, but are not 
limited to:

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•

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•
•
•
•

downturns in national, regional and local economic environments, including increases in the unemployment rate and 
inflation or deflation;
competition from other properties;
deteriorating local real estate market conditions, such as oversupply, reduction in demand and decreasing rental rates;
declining real estate valuations;
increasing vacancies and the need to periodically repair, renovate and re-lease space;
adverse developments concerning our tenants, which could affect our ability to collect rents and execute lease renewals;
government actions and initiatives, including risks associated with the impact of government shutdowns and budgetary 
reductions or impasses, such as a reduction of rental revenues, non-renewal of leases and/or a curtailment of demand for 
additional space by our strategic customers;
increasing operating costs, including insurance expenses, utilities, real estate taxes and other expenses, much of which we 
may not be able to pass through to tenants;
increasing interest rates and unavailability of financing on acceptable terms or at all;
trends in office real estate that may adversely affect future demand, including telecommuting and flexible workplaces that 
increase the population density per square foot; 
adverse changes in taxation or zoning laws;
potential inability to secure adequate insurance;
adverse consequences resulting from civil disturbances, natural disasters, terrorist acts or acts of war; and
potential liability under environmental or other laws or regulations.

We may suffer adverse consequences as a result of adverse economic conditions. Our business may be affected by 

adverse economic conditions in the United States economy or real estate industry as a whole or by the local economic 
conditions in the markets in which our properties are located, including the impact of high unemployment and constrained 
credit. Adverse economic conditions could increase the likelihood of tenants encountering financial difficulties, including 
bankruptcy, insolvency or general downturn of business, and as a result could increase the likelihood of tenants defaulting in 
their lease obligations to us.  Such conditions also could increase the likelihood of our being unsuccessful in renewing tenants, 
renewing tenants on terms less favorable to us or being unable to lease newly constructed properties.  In addition, such 
conditions could increase the level of risk that we may not be able to obtain new financing for development activities, 
acquisitions, refinancing of existing debt or other capital requirements at reasonable terms, if at all. As a result, adverse 
economic conditions could collectively have an adverse effect on our financial position, results of operations, cash flows and 
ability to make expected distributions to our shareholders.

We may suffer adverse consequences as a result of our reliance on rental revenues for our income. We earn revenue 
from renting our properties.  Our operating costs do not necessarily fluctuate in relation to changes in our rental revenue. This
means that our costs will not necessarily decline and may increase even if our revenues decline.

For new tenants or upon lease expiration for existing tenants, we generally must make improvements and pay other leasing 

costs for which we may not receive increased rents. We also make building-related capital improvements for which tenants 
may not reimburse us. 

If our properties do not generate revenue sufficient to meet our operating expenses and capital costs, we may have to 
borrow additional amounts to cover these costs.  In such circumstances, we would likely have lower profits or possibly incur 
losses. We may also find in such circumstances that we are unable to borrow to cover such costs, in which case our operations 
could be adversely affected.  Moreover, there may be less or no cash available for distributions to our shareholders. 

In addition, the competitive environment for leasing is affected considerably by a number of factors including, among 
other things, changes due to economic factors such as supply and demand. These factors may make it difficult for us to lease 
existing vacant space and space associated with future lease expirations at rental rates that are sufficient to meet our short-term 
capital needs.

We rely on the ability of our tenants to pay rent and would be harmed by their inability to do so.  Our performance 

depends on the ability of our tenants to fulfill their lease obligations by paying their rental payments in a timely manner.  If one 
or more of our major tenants, or a number of our smaller tenants, were to experience financial difficulties, including 
bankruptcy, insolvency, government shutdown, or general downturn of business, there could be an adverse effect on our 
financial position, results of operations, cash flows and ability to make expected distributions to our shareholders. 

8

We may be adversely affected by developments concerning some of our major tenants and sector concentrations, 

including shutdowns of the United States Government and actual, or potential, reductions in government spending 
targeting United States Government agencies and defense contractors engaged in knowledge-based activities. As of 
December 31, 2012, our 20 largest tenants accounted for 64.5% of the total annualized rental revenue of our office properties, 
and the four largest of these tenants accounted for 63.4% of that portion. We computed the annualized rental revenue by 
multiplying by 12 the sum of monthly contractual base rents and estimated monthly expense reimbursements under active 
leases in our portfolio of office properties as of December 31, 2012.  Information regarding our four largest tenants is set forth 
below:

Tenant

Annualized
Rental Revenue at 
December 31, 2012

(in thousands)

Percentage of Total
Annualized Rental
Revenue of 
Office Properties

Number
of Leases

United States of America
Northrop Grumman Corporation (1)
Booz Allen Hamilton, Inc.
Computer Sciences Corporation (1)

$

111,745
29,061
25,598
22,321

24.2%
6.3%
5.5%
4.8%

63
12
10
7

(1)

Includes affiliated organizations and agencies and predecessor companies.

Most of our leases with the United States Government provide for a series of one-year terms or provide for early 

termination rights. The United States Government may terminate its leases if, among other reasons, the United States Congress 
fails to provide funding.  If any of our four largest tenants fail to make rental payments to us, including as a result of a 
government shutdown, or if the United States Government elects to terminate some or all of its leases and the space cannot be 
re-leased on satisfactory terms, there would be an adverse effect on our financial performance and ability to make distributions 
to our shareholders. 

As of December 31, 2012, 70.0% of the total annualized rental revenue of our office properties held for long-term 

investment was from properties located near defense installations and other knowledge-based government demand drivers, or 
that were otherwise at least 50% occupied by United States Government agencies or defense contractors. We expect to further 
increase our reliance on United States Government agencies and defense contractors, most of whom are engaged in knowledge-
based defense and security activities, for revenue. A reduction in government spending targeting these activities could affect
the ability of these tenants to fulfill lease obligations, decrease the likelihood that these tenants will renew their leases or enter 
into new leases and limit our future growth from these sectors.  Moreover, uncertainty regarding the potential for future 
reduction in government spending targeting these activities could also decrease or delay leasing activity from tenants engaged 
in these activities. The Budget Control Act passed in 2011, which imposed caps on the Federal budget in order to achieve 
targeted spending levels over the 2013-2021 fiscal years, has fueled further uncertainty regarding future government spending 
reductions. A reduction in government spending targeting knowledge-based defense and security activities and/or uncertainty 
regarding the potential for future spending reductions could have an adverse effect on our results of operations, financial 
condition, cash flows and ability to make distributions to our shareholders. 

We may be unable to successfully execute plans to dispose of properties. In 2011, we implemented our Strategic 

Reallocation Plan to dispose of office properties and land that are no longer closely aligned with our strategy.  In 2012, our 
Board of Trustees also approved a plan by management to shorten the holding period for office properties and developable land 
in Greater Philadelphia, Pennsylvania because the properties no longer meet our strategic investment criteria.  Our failure to 
successfully execute these and other future disposition plans could adversely affect our ability to effectively execute our 
business strategy, which in turn could affect our financial position, results of operations, cash flows and ability to make 
expected distributions to shareholders.

We may suffer adverse consequences due to our inexperience in developing, managing and leasing wholesale data 
centers. We have significant experience in developing, managing and leasing single user data center space.  However, we do 
not have the same depth and length of experience in relation to wholesale data centers, having acquired our wholesale data 
center in 2010 and having made limited progress leasing that center through December 31, 2012. This may increase the 
likelihood of us being unsuccessful in executing our plans with respect to our existing wholesale data center or any such centers 
that we may acquire or develop in the future.  If we are unsuccessful in executing our wholesale data center plans, it could 
adversely affect our financial position, results of operations, cash flows and ability to make expected distributions to our 
shareholders.

9

Most of our properties are geographically concentrated in the Mid-Atlantic region, particularly in the Greater
Washington, DC/Baltimore region, or in particular office parks. We may suffer economic harm in the event of a decline 
in the real estate market or general economic conditions in those regions or parks.  Most of our properties are located in 
the Mid-Atlantic region of the United States and, as of December 31, 2012, our properties located in the Greater Washington,
DC/Baltimore region accounted for a combined 83.6% of our total annualized rental revenue from office properties.  Our 
properties are also often concentrated in office parks in which we own most of the properties.  Consequently, we do not have a 
broad geographic distribution of our properties. As a result, a decline in the real estate market or general economic conditions 
in the Mid-Atlantic region, the Greater Washington, DC/Baltimore region or the office parks in which our properties are located 
could have an adverse effect on our financial position, results of operations, cash flows and ability to make expected 
distributions to our shareholders. 

We would suffer economic harm if we were unable to renew our leases on favorable terms. When leases expire, our 
tenants may not renew or may renew on terms less favorable to us than the terms of their original leases.  If a tenant vacates a 
property, we can expect to experience a vacancy for some period of time, as well as incur higher leasing costs than we would 
likely incur if a tenant renews. As a result, our financial performance and ability to make expected distributions to our 
shareholders could be adversely affected if we experience a high volume of tenant departures at the end of their lease terms. 

We may be adversely affected by trends in the office real estate industry. Some businesses are rapidly evolving to 
increasingly permit employee telecommuting, flexible work schedules, open workplaces and teleconferencing. These practices 
enable businesses to reduce their space requirements. A continuation of the movement towards these practices could over time 
erode the overall demand for office space and, in turn, place downward pressure on occupancy, rental rates and property 
valuations, each of which could have an adverse effect on our financial position, results of operations, cash flows and ability to 
make expected distributions to our shareholders.

We may encounter a decline in the value of our real estate. The value of our real estate could be adversely affected by 
general economic and market conditions connected to a specific property, a market or submarket, a broader economic region or 
the office real estate industry.  Examples of such conditions include a broader economic recession, declining demand and 
decreases in market rental rates and/or market values of real estate assets.  If our real estate assets decline in value, it could 
result in our recognition of impairment losses.  Moreover, a decline in the value of our real estate could adversely affect the 
amount of borrowings available to us under credit facilities and other loans, which could, in turn, adversely affect our cash 
flows and financial condition.

We may not be able to compete successfully with other entities that operate in our industry. The commercial real 

estate market is highly competitive. We compete for the purchase of commercial property with many entities, including other 
publicly traded commercial REITs. Many of our competitors have substantially greater financial resources than we do. If our 
competitors prevent us from buying properties that we target for acquisition, we may not be able to meet our property 
acquisition goals. Moreover, numerous commercial properties compete for tenants with our properties. Some of the properties 
competing with ours may be newer or in more desirable locations, or the competing properties’ owners may be willing to 
accept lower rates than are acceptable to us. Competition for property acquisitions, or for tenants for properties that we own, 
could have an adverse effect on our financial position, results of operations, cash flows and ability to make expected 
distributions to our shareholders. 

We are dependent on external sources of capital for future growth.  Because we are a REIT, we must distribute at least 

90% of our annual taxable income to our shareholders.  Due to this requirement, we are not able to significantly fund our 
acquisition, construction and development activities using cash flow from operations. Therefore, our ability to fund these 
activities is dependent on our ability to access capital funded by third parties.  Such capital could be in the form of new debt, 
equity issuances of common shares, preferred shares, common and preferred units in our Operating Partnership or joint venture 
funding. These capital sources may not be available on favorable terms or at all.  Moreover, additional debt financing may 
substantially increase our leverage and subject us to covenants that restrict management’s flexibility in directing our operations, 
and additional equity offerings may result in substantial dilution of our shareholders’ interests.  Our inability to obtain capital 
when needed could have a material adverse effect on our ability to expand our business and fund other cash requirements. 

We use our Revolving Credit Facility to initially finance much of our investing and financing activities. We also use other 

credit facilities to fund a significant portion of our construction activities.  Our lenders under these and other facilities could, 
for financial hardship or other reasons, fail to honor their commitments to fund our requests for borrowings under these 
facilities.  In the event that one or more lenders under these facilities are not able or willing to fund a borrowing request, it 
would adversely affect our ability to access borrowing capacity under these facilities, which would in turn adversely affect our 
financial condition, cash flows and ability to make expected distributions to our shareholders.

10

We may be unable to successfully execute our plans to acquire existing commercial real estate properties. We intend 
to acquire existing commercial real estate properties to the extent that suitable acquisitions can be made on advantageous terms. 
Acquisitions of commercial properties entail risks, such as the risks that we may not be in a position, or have the opportunity in 
the future, to make suitable property acquisitions on advantageous terms and/or that such acquisitions will fail to perform as 
expected. The failure of our acquisitions to perform as expected could adversely affect our financial position, results of 
operations, cash flows and ability to make expected distributions to our shareholders.

We may be exposed to unknown liabilities from acquired properties. We may acquire properties that are subject to 
liabilities in situations where we have no recourse, or only limited recourse, against the prior owners or other third parties with 
respect to unknown liabilities. As a result, if a liability were asserted against us based upon ownership of those properties, we 
might have to pay substantial sums to settle or contest it, which could adversely affect our results of operations and cash flow.
Examples of unknown liabilities with respect to acquired properties include, but are not limited to: 

•
•
•
•

liabilities for clean-up of disclosed or undisclosed environmental contamination;
claims by tenants, vendors or other persons dealing with the former owners of the properties;
liabilities incurred in the ordinary course of business; and
claims for indemnification by general partners, directors, officers and others indemnified by the former owners of the 
properties.

We may suffer economic harm as a result of making unsuccessful acquisitions in new markets. We may pursue 
selective acquisitions of properties in regions where we have not previously owned properties. These acquisitions may entail 
risks in addition to those we face in other acquisitions where we are familiar with the regions, such as the risk that we do not 
correctly anticipate conditions or trends in a new market and are therefore not able to operate the acquired property profitably.
If this occurs, it could adversely affect our financial position, results of operations, cash flows and ability to make expected 
distributions to our shareholders.

We may be unable to execute our plans to develop and construct additional properties. Although the majority of our 
investments are in currently leased properties, we also develop, construct and redevelop properties, including some that are not 
fully pre-leased. When we develop, construct and redevelop properties, we assume the risk that actual costs will exceed our 
budgets, that we will experience conditions which delay or preclude project completion and that projected leasing will not 
occur, any of which could adversely affect our financial performance, results of operations and our ability to make distributions 
to our shareholders.  In addition, we generally do not obtain construction financing commitments until the development stage 
of a project is complete and construction is about to commence. We may find that we are unable to obtain financing needed to 
continue with the construction activities for such projects.

Our data centers may become obsolete. Data centers are much more expensive investments on a per square foot basis 
than office properties due to the level of infrastructure required to operate the centers. At the same time, technology, industry 
standards and service requirements for data centers are rapidly evolving and, as a result, the risk of investments we make in 
data centers becoming obsolete is higher than office properties.  Our data centers may become obsolete due to the development 
of new systems to deliver power to, or eliminate heat from, the servers housed in the properties.  Our data centers could also 
become obsolete from new server technology that requires less critical load and heat removal than our facilities are designed to 
provide.  In addition, we may not be able to efficiently upgrade or change power and cooling systems to meet new demands or 
industry standards without incurring significant costs that we may not be able to pass on to our tenants. The obsolescence of 
our data centers could adversely affect our financial position, results of operations, cash flows and ability to make expected 
distributions to our shareholders.

Certain of our properties containing data centers contain space not suitable for lease other than as data centers, 
which could make it difficult or impractical to reposition them for alternative use.  Certain of our properties contain data 
center space, which is highly specialized space containing extensive electrical and mechanical systems that are designed 
uniquely to run and maintain banks of computer servers. As a result, in the event that we needed to reposition such data center 
space for another use, major renovations and expenditures could be required. 

Real estate investments are illiquid, and we may not be able to sell our properties on a timely basis when we 

determine it is appropriate to do so.  Real estate investments can be difficult to sell and convert to cash quickly, especially if 
market conditions are not favorable.  Such illiquidity could limit our ability to quickly change our portfolio of properties in 
response to changes in economic or other conditions.  Moreover, under certain circumstances, the Internal Revenue Code 
imposes certain penalties on a REIT that sells property held for less than two years and limits the number of properties it can 
sell in a given year. In addition, for certain of our properties that we acquired by issuing units in our Operating Partnership, we 
are restricted by agreements with the sellers of the properties for a certain period of time from entering into transactions (such 
11

as the sale or refinancing of the acquired property) that will result in a taxable gain to the sellers without the seller’s consent.
Due to these factors, we may be unable to sell a property at an advantageous time. 

We may suffer adverse effects as a result of the indebtedness that we carry and the terms and covenants that relate

to this debt.  Some of our properties are pledged by us to support repayment of indebtedness.  In addition, we rely on 
borrowings to fund some or all of the costs of new property acquisitions, construction and development activities and other 
items.  Our organizational documents do not limit the amount of indebtedness that we may incur.

Payments of principal and interest on our debt may leave us with insufficient cash to operate our properties or pay 
distributions to our shareholders required to maintain our qualification as a REIT. We are also subject to the risks that: 

•

•

•

we may not be able to refinance our existing indebtedness, or may refinance on terms that are less favorable to us than the 
terms of our existing indebtedness; 
in the event of our default under the terms of our Revolving Credit Facility, our Operating Partnership could be restricted 
from making cash distributions to us, which could result in reduced distributions to our shareholders or the need for us to 
incur additional debt to fund these distributions; and
if we are unable to pay our debt service on time or are unable to comply with restrictive financial covenants in certain of 
our debt, our lenders could foreclose on our properties securing such debt and, in some cases, other properties and assets 
that we own.

Some of our debt is cross-defaulted, which means that failure to pay interest or principal on the debt above a threshold 
value will create a default on certain of our other debt.  In addition, some of our debt that is cross-defaulted also contains cross-
collateralization provisions, which means that the collateral of the debt can also be used as collateral for certain of our other 
debt. Any foreclosure of our properties could result in loss of income and asset value that would negatively affect our financial 
condition, results of operations, cash flows and ability to make expected distributions to our shareholders.  In addition, if we are 
in default and the value of the properties securing a loan is less than the loan balance, we may be required to pay the resulting 
shortfall to the lender using other assets. 

If short-term interest rates were to rise, our debt service payments on debt with variable interest rates would increase, 

which would lower our net income and could decrease our distributions to our shareholders. We use interest rate swap 
agreements from time to time to reduce the impact of changes in interest rates.  Decreases in interest rates would result in 
increased interest payments due under interest rate swap agreements in place and, in the event we decided to unwind such 
agreements, could result in our recognizing a loss and remitting a payment.

We must refinance our debt in the future. As of December 31, 2012, our scheduled debt payments over the next five years, 

including maturities, were as of follows:

Year

Amount (1)

(in thousands)

2013
2014
2015
2016
2017

$

121,129
158,341
795,802
278,642
551,388

(1) Represents principal maturities only and therefore excludes net discounts of $8.6 million.  Maturities include $17.5 million in 2013 and $411.1 million in 

2015 that may each be extended for one year, subject to certain conditions.

Our operations likely will not generate enough cash flow to repay some or all of this debt without additional borrowings, equity 
issuances and/or property sales.  If we cannot refinance our debt, extend the repayment dates, or raise additional equity prior to 
the dates when our debt matures, we would default on our existing debt, which would have an adverse effect on our financial 
position, results of operations, cash flows and ability to make expected distributions to our shareholders. 

We have certain distribution requirements that reduce cash available for other business purposes. As a REIT, we 
must distribute at least 90% of our annual taxable income (excluding capital gains), which limits the amount of cash we can 
retain for other business purposes, including amounts to fund acquisitions and development activity. Also, it is possible that 
because of the differences between the time we actually receive revenue or pay expenses and the period during which we report 
those items for distribution purposes, we may have to borrow funds to meet the 90% distribution requirement.

12

We may be unable to continue to make shareholder distributions at expected levels. We expect to make regular 
quarterly cash distributions to our shareholders.  However, our ability to make such distributions depends on a number of 
factors, some of which are beyond our control.  Some of our loan agreements contain provisions that could restrict future 
distributions.  Our ability to make distributions at expected levels will also be dependent, in part, on other matters, including, 
but not limited to: 

•
•
•
•
•
•
•
•
•

continued property occupancy and timely receipt of rent obligations; 
the amount of future capital expenditures and expenses relating to our properties; 
the level of leasing activity and future rental rates; 
the strength of the commercial real estate market; 
our ability to compete; 
our costs of compliance with environmental and other laws; 
our corporate overhead levels; 
our amount of uninsured losses; and 
our decision to reinvest in operations rather than distribute available cash. 

In addition, we can make distributions to the holders of our common shares only after we make preferential distributions to 
holders of our preferred shares. 

Our ability to pay dividends may be limited, and we cannot provide assurance that we will be able to pay dividends 

regularly. Because we conduct substantially all of our operations through our Operating Partnership, our ability to pay 
dividends will depend almost entirely on payments and distributions received on our interests in our Operating Partnership, the 
payment of which depends in turn on our ability to operate profitably and generate cash flow from our operations. We cannot 
guarantee that we will be able to pay dividends on a regular quarterly basis in the future. Additionally, the terms of some of the 
debt to which our Operating Partnership is a party limit its ability to make some types of payments and other distributions to us.
This in turn limits our ability to make some types of payments, including payment of dividends on common or preferred shares, 
unless we meet certain financial tests or such payments or dividends are required to maintain our qualification as a REIT. As a 
result, if we are unable to meet the applicable financial tests, we may not be able to pay dividends on our shares in one or more 
periods.  Furthermore, any new shares of beneficial interest issued in capital-raising transactions will substantially increase the 
cash required to continue to pay cash dividends at current levels. Any common or preferred shares that may in the future be 
issued for financing acquisitions, share-based compensation arrangements or otherwise would have a similar effect.

We may incur additional indebtedness, which may harm our financial position and cash flow and potentially impact 

our ability to pay distributions to shareholders. Our governing documents do not limit us from incurring additional 
indebtedness and other liabilities. As of December 31, 2012, we had $2.0 billion of indebtedness outstanding. We may incur 
additional indebtedness and become more highly leveraged, which could harm our financial position and potentially limit our 
cash available to pay distributions to shareholders. As a result, we may not have sufficient funds remaining to make expected 
distributions to our shareholders if we incur additional indebtedness. 

Our ability to pay distributions is further limited by the requirements of Maryland law. As a Maryland REIT, we 
may not under applicable Maryland law make a distribution if either of the following conditions exist after giving effect to the 
distribution: (1) the REIT would not be able to pay its debts as the debts become due in the usual course of business; or (2) the 
REIT's total assets would be less than the sum of its total liabilities plus the amount that would be needed, if the REIT were 
dissolved at the time of the distribution, to satisfy the preferential rights upon dissolution of shareholders whose preferential 
rights are superior to those receiving the distribution. Therefore, we may not be able to make expected distributions to our 
shareholders if either of the above described conditions exists after giving effect to the distribution. 

We may issue additional common or preferred shares that dilute our shareholders’ interests. We may issue 
additional common shares and preferred shares without shareholder approval.  Similarly, we may cause the Operating 
Partnership to issue its common or preferred units for contributions of cash or property without approval by the limited partners 
of the Operating Partnership or our shareholders.  Our existing shareholders’ interests could be diluted if such additional 
issuances were to occur.

We may suffer economic harm as a result of the actions of our partners in real estate joint ventures and other
investments. We invest in certain entities in which we are not the exclusive investor or principal decision maker.  Investments 
in such entities may, under certain circumstances, involve risks not present when a third party is not involved, including the 
possibility that the other parties to these investments might become bankrupt or fail to fund their share of required capital 
contributions.  Our partners in these entities may have economic, tax or other business interests or goals that are inconsistent 

13

with our business interests or goals, and may be in a position to take actions contrary to our policies or objectives.  Such 
investments may also lead to impasses, for example, as to whether to sell a property, because neither we nor the other parties to 
these investments may have full control over the entity.  In addition, we may in certain circumstances be liable for the actions 
of the other parties to these investments.  Each of these factors could have an adverse effect on our financial condition, results 
of operations, cash flows and ability to make expected distributions to our shareholders. 

We may elect to make additional cash outlays to protect our investment in loans we make that are subordinate to 
other loans. We have made and may in the future make loans under which we have a secured interest in the ownership of a 
property that is subordinate to other loans on the property.  If a default were to occur under the terms of any such loans with us 
or under the first mortgage loans related to the properties on such loans, we may, in order to protect our investment, elect to 
either: (1) purchase the other loan; or (2) foreclose on the ownership interest in the property and repay the first mortgage loan, 
either of which could have an adverse effect on our financial condition, results of operations, cash flows and ability to make 
expected distributions to our shareholders. 

We may be subject to possible environmental liabilities. We are subject to various Federal, state and local 

environmental laws, including air and water quality, hazardous or toxic substances and health and safety. These laws can 
impose liability on current and prior property owners or operators for the costs of removal or remediation of hazardous 
substances released on a property, even if the property owner was not responsible for, or even aware of, the release of the 
hazardous substances.  Costs resulting from environmental liability could be substantial. The presence of hazardous substances 
on our properties may also adversely affect occupancy and our ability to sell or borrow against those properties. In addition to 
the costs of government claims under environmental laws, private plaintiffs may bring claims for personal injury or other 
reasons. Additionally, various laws impose liability for the costs of removal or remediation of hazardous substances at the 
disposal or treatment facility. Anyone who arranges for the disposal or treatment of hazardous substances at such a facility is 
potentially liable under such laws. These laws often impose liability on an entity even if the facility was not owned or operated 
by the entity.

Although most of our properties have been subject to varying degrees of environmental assessment, many of these 
assessments are limited in scope and may not include or identify all potential environmental liabilities or risks associated with 
the property.  Identification of new compliance concerns or undiscovered areas of contamination, changes in the extent or 
known scope of contamination, discovery of additional sites, human exposure to the contamination or changes in cleanup or 
compliance requirements could result in significant costs to us that could have an adverse effect on our financial condition, 
results of operations, cash flows and ability to make expected distributions to our shareholders.

Terrorist attacks may adversely affect the value of our properties, our financial position and cash flows. We have 

significant investments in properties located in large metropolitan areas and near military installations.  Future terrorist attacks 
could directly or indirectly damage our properties or cause losses that materially exceed our insurance coverage. After such an 
attack, tenants in these areas may choose to relocate their businesses to areas of the United States that may be perceived to be 
less likely targets of future terrorist activity, and fewer customers may choose to patronize businesses in these areas. This in 
turn would trigger a decrease in the demand for space in these areas, which could increase vacancies in our properties and force 
us to lease space on less favorable terms. As a result, the occurrence of terrorist attacks could adversely affect our financial 
position, results of operations, cash flows and ability to make expected distributions to our shareholders. 

We may be subject to other possible liabilities that would adversely affect our financial position and cash flows. Our

properties may be subject to other risks related to current or future laws, including laws benefiting disabled persons, state or 
local laws relating to zoning, construction, fire and life safety requirements and other matters. These laws may require 
significant property modifications in the future and could result in the levy of fines against us.  In addition, although we believe 
that we adequately insure our properties, we are subject to the risk that our insurance may not cover all of the costs to restore a 
property that is damaged by a fire or other catastrophic events, including acts of war or, as mentioned above, terrorism. The
occurrence of any of these events could have an adverse effect on our financial condition, results of operations, cash flows and 
ability to make expected distributions to our shareholders. 

We may be subject to increased costs of insurance and limitations on coverage, particularly regarding acts of 
terrorism. Our portfolio of properties is insured for losses under our property, casualty and umbrella insurance policies 
through September 30, 2013. These policies include coverage for acts of terrorism.  Future changes in the insurance industry’s
risk assessment approach and pricing structure may increase the cost of insuring our properties and decrease the scope of 
insurance coverage, either of which could adversely affect our financial position and operating results.  Most of our loan 
agreements contain customary covenants requiring us to maintain insurance. Although we believe that we have adequate 
insurance coverage for purposes of these agreements, we may not be able to obtain an equivalent amount of coverage at 
reasonable costs, or at all, in the future.  In addition, if lenders insist on greater coverage than we are able to obtain, it could 

14

adversely affect our ability to finance and/or refinance our properties and execute our growth strategies, which, in turn, would 
have an adverse effect on our financial condition, results of operations, cash flows and ability to make expected distributions to 
our shareholders. 

Our business could be adversely affected by a negative audit by the United States Government. Agencies of the 

United States, including the Defense Contract Audit Agency and various agency Inspectors General, routinely audit and 
investigate government contractors. These agencies review a contractor’s performance under its contracts, cost structure and 
compliance with applicable laws, regulations, and standards. The United States Government also reviews the adequacy of, and 
a contractor’s compliance with, its internal control systems and policies. Any costs found to be misclassified may be subject to 
repayment.  If an audit or investigation uncovers improper or illegal activities, we may be subject to civil or criminal penalties 
and administrative sanctions, including termination of contracts, forfeiture of profits, suspension of payments, fines, and 
suspension or prohibition from doing business with the United States Government.  In addition, we could suffer serious 
reputational harm if allegations of impropriety were made against us. 

Our business could be adversely affected by security breaches through cyber attacks, cyber intrusions or otherwise.
We face risks associated with security breaches, whether through cyber attacks or cyber intrusions over the Internet, malware, 
computer viruses, attachments to e-mails, persons inside our organization or persons with access to systems inside our 
organization, and other significant disruptions of our information technology networks and related systems.  Our information 
technology networks and related systems are essential to our business operations.  Despite our activities to maintain the security 
and integrity of our networks and related systems, there can be no absolute assurance that these activities will be effective. A
security breach involving our networks and related systems could disrupt out operations in numerous ways that could 
ultimately have an adverse effect on our financial condition, results of operations, cash flows and ability to make expected 
distributions to our shareholders.

Our ownership limits are important factors.  Our Declaration of Trust limits ownership of our common shares by any 
single shareholder to 9.8% of the number of the outstanding common shares or 9.8% of the value of the outstanding common 
shares, whichever is more restrictive.  Our Declaration of Trust also limits ownership by any single shareholder of our common 
and preferred shares in the aggregate to 9.8% of the aggregate value of the outstanding common and preferred shares. We call 
these restrictions the “Ownership Limit.” Our Declaration of Trust allows our Board of Trustees to exempt shareholders from 
the Ownership Limit. The Ownership Limit and the restrictions on ownership of our common shares may delay or prevent a 
transaction or a change of control that might involve a premium price for our common shares or otherwise be in the best 
interest of our shareholders.

Our Declaration of Trust includes other provisions that may prevent or delay a change of control.  Subject to the 
requirements of the New York Stock Exchange, our Board of Trustees has the authority, without shareholder approval, to issue 
additional securities on terms that could delay or prevent a change in control.  In addition, our Board of Trustees has the 
authority to reclassify any of our unissued common shares into preferred shares.  Our Board of Trustees may issue preferred 
shares with such preferences, rights, powers and restrictions as our Board of Trustees may determine, which could also delay or 
prevent a change in control. 

The Maryland business statutes impose potential restrictions that may discourage a change of control of our
company. Various Maryland laws may have the effect of discouraging offers to acquire us, even if the acquisition would be 
advantageous to shareholders.  Resolutions adopted by our Board of Trustees and/or provisions of our bylaws exempt us from 
such laws, but our Board of Trustees can alter its resolutions or change our bylaws at any time to make these provisions 
applicable to us. 

Our failure to qualify as a REIT would have adverse tax consequences, which would substantially reduce funds 
available to make distributions to our shareholders. We believe that since 1992 we have qualified for taxation as a REIT for 
Federal income tax purposes. We plan to continue to meet the requirements for taxation as a REIT.  Many of these 
requirements, however, are highly technical and complex. The determination that we are a REIT requires an analysis of various 
factual matters and circumstances that may not be totally within our control.  For example, to qualify as a REIT, at least 95% of 
our gross income must come from certain sources that are specified in the REIT tax laws. We are also required to distribute to 
shareholders at least 90% of our REIT taxable income (excluding capital gains). The fact that we hold most of our assets 
through our Operating Partnership and its subsidiaries further complicates the application of the REIT requirements.  Even a 
technical or inadvertent mistake could jeopardize our REIT status.  Furthermore, Congress and the Internal Revenue Service 
might make changes to the tax laws and regulations and the courts might issue new rulings that make it more difficult or 
impossible for us to remain qualified as a REIT.

15

If we fail to qualify as a REIT, we would be subject to Federal income tax at regular corporate rates. Also, unless the 
Internal Revenue Service granted us relief under certain statutory provisions, we would remain disqualified as a REIT for four 
years following the year we first fail to qualify.  If we fail to qualify as a REIT, we would have to pay significant income taxes 
and would therefore have less money available for investments or for distributions to our shareholders.  In addition, if we fail to 
qualify as a REIT, we will no longer be required to pay dividends. As a result of all these factors, our failure to qualify as a 
REIT could impair our ability to expand our business and raise capital and would likely have a significant adverse effect on the 
value of our securities. 

We could face possible adverse changes in tax laws, which may result in an increase in our tax liability. From time to
time changes in state and local tax laws or regulations are enacted, which may result in an increase in our tax liability. The shortfall
in tax revenues for states and municipalities in recent years may lead to an increase in the frequency and size of such changes. If
such changes occur, we may be required to pay additional taxes on our assets or income. These increased tax costs could adversely
affect our financial condition and results of operations and the amount of cash available for payment of dividends.

A number of factors could cause our security prices to decline. As is the case with any publicly-traded securities, 
certain factors outside of our control could influence the value of our common and preferred shares. These conditions include, 
but are not limited to: 

• market perception of REITs in general and office REITs in particular;
• market perception regarding our major tenants and sector concentrations; 
•
•
•
•
•
• market perception of our financial condition, performance, dividends and growth potential; and
•

the level of institutional investor interest in our Company; 
general economic and business conditions; 
prevailing interest rates;
our financial performance;
our underlying asset value;

adverse changes in tax laws. 

We may experience significant losses and harm to our financial condition if financial institutions holding our cash 
and cash equivalents file for bankruptcy protection. We believe that we maintain our cash and cash equivalents with high 
quality financial institutions. We have not experienced any losses to date on our deposited cash.  However, we may incur 
significant losses and harm to our financial condition in the future if any of these financial institutions files for bankruptcy 
protection.

Certain of our Trustees have potential conflicts of interest.  Certain members of our Board of Trustees own partnership 

units in our Operating Partnership. These individuals may have personal interests that conflict with the interests of our 
shareholders.  For example, if our Operating Partnership sells or refinances certain of the properties that these Trustees
contributed to the Operating Partnership, the Trustees could suffer adverse tax consequences. Their personal interests could 
conflict with our interests if such a sale or refinancing would be advantageous to us. We have certain policies in place that are 
designed to minimize conflicts of interest. We cannot, however, provide assurance that these policies will be successful in 
eliminating the influence of such conflicts, and if they are not successful, decisions could be made that might fail to reflect fully 
the interests of all of our shareholders. 

Item 1B.  Unresolved Staff Comments

None

16

Item 2.  Properties

The following table provides certain information about our office property markets and submarkets as of December 31, 2012:

Market/Submarket and Location

Baltimore /Washington Corridor:
Airport Square - Linthicum, MD
Annapolis - Annapolis, MD
Arundel Preserve - Hanover, MD
BWI South - Hanover, MD
Howard County Perimeter - Columbia, MD
National Business Park - Annapolis Junction, MD
UMBC - Catonsville, MD
Subtotal / Average

Northern Virginia:
Dulles South - Chantilly, VA
Herndon - Herndon, VA
Merrifield - Falls Church, VA
Route 28 South - Herndon, VA
Springfield - Springfield, VA
Tyson's Corner - McLean, VA
Subtotal / Average

San Antonio

Washington DC-Capitol Riverfront

St Mary's & King George Counties:
King George County - Dahlgren, VA
St. Mary's County - California, MD
St. Mary's County - Lexington Park, MD
Subtotal / Average

Greater Baltimore:
Baltimore City - Baltimore, MD
Harford County - Aberdeen, MD
Hunt Valley/RTE 83 Corridor - Timonium, MD
White Marsh - White Marsh, MD
Subtotal / Average

Suburban Maryland:
College Park - College Park, MD
Lanham - Lanham, MD (4)
Subtotal / Average

Colorado Springs:
Colorado Springs East - Colorado Springs, CO (5)
Colorado Springs Northwest - Colorado Springs, CO
I-25 North Corridor - Colorado Springs, CO (4)
Subtotal / Average

Number of
Buildings

Rentable
Square Feet

Occupancy (1)

Annualized
Rental
Revenue (2)

Annualized Rental 
Revenue per
Occupied Square
Foot (2)(3)

24
1
1
10
33
27
2
98

9
3
1
2
1
3
19

8

2

6
7
6
19

1
3
2
26
32

2
1
3

11
3
7
21

1,813,633
155,000
146,666
432,104
2,682,359
3,223,501
127,258
8,580,521

1,434,692
562,543
180,854
353,334
83,987
605,091
3,220,501

80.9 % $ 35,199,714
2,307,308
100.0 %
3,737,998
100.0 %
6,528,684
68.5 %
88.7 %
60,675,335
96.2 % 107,548,246
94.5 %
3,257,577
89.4% $219,254,862

91.0 % $ 37,724,293
16,856,436
95.9 %
3,059,085
46.0 %
8,182,182
91.4 %
100.0 %
2,944,123
19,378,891
88.8 %
89.2% $ 88,145,010

915,093

96.4% $ 29,159,572

360,326

89.0% $ 14,464,433

3,758,392
91.6 % $
4,882,294
75.2 %
91.6 %
7,298,048
85.9% $ 15,938,734

93.4 % $ 14,932,204
3,296,026
37.9 %
5,570,833
100.0 %
78.0 %
16,612,279
78.6% $ 40,411,342

94.9 % $
90.9 %
94.1% $

7,267,194
569,503
7,836,697

80.1 % $ 12,375,054
5,389,696
83.0 %
71.4 %
7,219,269
77.8% $ 24,984,019

206,207
317,835
379,550
903,592

481,016
284,884
239,835
1,047,170
2,052,905

242,070
55,866
297,936

732,635
322,152
522,724
1,577,511

17

$23.98
14.89
25.49
22.05
25.49
34.68
27.09
$28.60

$28.88
31.24
36.75
25.33
35.05
36.08
$30.68

$33.04

$45.12

$19.89
20.42
20.99
$20.55

$33.22
30.54
23.23
20.34
$25.04

$31.65
11.21
$27.95

$21.09
20.16
19.33
$20.35

Market/Submarket and Location

Number of
Buildings

Rentable
Square Feet

Occupancy (1)

Annualized 
Rental 
Revenue (2)

Annualized Rental 
Revenue per 
Occupied Square 
Foot (2)(3)

Greater Philadelphia - Blue Bell, PA

Other Region:
Huntsville - Huntsville, AL
Richmond Southwest - Richmond, VA
Southwest Virginia - Lebanon, VA
Subtotal / Average

3

1
1
1
3

488,741

100.0% $

9,369,523

$19.17

138,466
193,000
102,842
434,308

83.2 % $

100.0 %
100.0 %

3,136,582
5,449,908
3,705,802
94.6% $ 12,292,292

$27.24
28.24
36.03
$29.91

$27.92

Total /Average:

208

18,831,434

87.8% $461,856,484

(1)  This percentage is based upon all rentable square feet under lease terms that were in effect as of December 31, 2012. 
(2)   Annualized rental revenue is the monthly contractual base rent as of December 31, 2012 multiplied by 12, plus the estimated annualized 
expense reimbursements under existing leases.  We consider annualized rental revenue to be a useful measure for analyzing revenue 
sources because, since it is point-in-time based, it does not contain increases and decreases in revenue associated with periods in which 
lease terms were not in effect; historical revenue under generally accepted accounting principles does contain such fluctuations. We find 
the measure particularly useful for leasing, tenant, segment and industry analysis. 

(3)    Annualized rental revenue per occupied square foot is a property’s annualized rental revenue divided by that property’s occupied square 
feet as of December 31, 2012.  Our computation of annualized rental revenue excludes the effect of lease incentives.  The annualized 
rent per occupied square foot, including the effect of lease incentives, for our total office portfolio and two largest regions follows: total 
office portfolio: $27.85; Baltimore/Washington Corridor: $28.52; and Northern Virginia: $30.55.  

(4)    These properties were included in our Strategic Reallocation Plan and classified as held for sale as of December 31, 2012.  
(5)    Nine of these properties were included in our Strategic Reallocation Plan and classified as held for sale as of December 31, 2012.

18

 
The following table provides certain information about our office properties that were under construction or redevelopment, or for 

which we were contractually committed to construct, as of December 31, 2012 (dollars in thousands):

Property and Location

Submarket

Estimated
Rentable
Square Feet
Upon
Completion

Percentage
Leased

Calendar
Quarter of 
Anticipated
Completion

Costs
Incurred to 
Date (1)

Estimated
Costs to 
Complete (1)

Under Construction
Baltimore/Washington Corridor:
7205 Riverwood Road
Columbia, MD
7175 Riverwood Road
Columbia, MD
312 Sentinel Way

Annapolis Junction, MD
420 National Business Parkway

Jessup, MD
Subtotal/Average

Northern Virginia:
7770 Backlick Road (Patriot Ridge)

Springfield, VA

Howard County 
Perimeter
Howard County
Perimeter
National
Business Park
National
Business Park

89,268

100 %

1Q 2013

$

15,673

$

7,117

25,939

100 %

3Q 2013

5,927

3,122

125,160

0 %

3Q 2014

16,366

20,287

137,322

0 %

2Q 2014

18,043

17,439

377,689

31 %

Springfield

239,272

49 %

3Q 2013

$

$

$

$

$

$

$

56,009

$

47,965

58,143

$

14,574

7,490

15,036

4,309

7,523

69,942

19,055

$

$

37,133

3,890

1,396

20,281

3,052

21,761

4,530

3,701

28,033

153,984

$

$

49,633

134,731

19,138

$

2,278

Ashburn Crossing - DC-8

Ashburn

200,000

100 %

4Q 2013

Ashburn, VA

Ashburn Crossing - DC-9

Ashburn

115,000

100 %

2Q 2015

Ashburn, VA
Subtotal/Average

Huntsville:
1000 Redstone Gateway

Huntsville, AL

554,272

78 %

Huntsville

121,105

100 %

1Q 2013

1100 Redstone Gateway

Huntsville

121,347

100 %

1Q 2014

Huntsville, AL

1200 Redstone Gateway

Huntsville

121,088

100 %

4Q 2013

Huntsville, AL

7200 Redstone Gateway

Huntsville

61,434

0 %

4Q 2013

Huntsville, AL
Subtotal/Average

Total Under Construction

Under Redevelopment
Greater Philadelphia:
751 Arbor Way (Hillcrest I)

Blue Bell, PA

721 Arbor Way (Hillcrest II)

Blue Bell, PA

Total Under Redevelopment

Greater
Philadelphia
Greater
Philadelphia

424,974

1,356,935

86 %

67%

113,297

51 %

1Q 2013

183,466

59 %

2Q 2014

14,076

17,019

296,763

56%

$

33,214

$

19,297

(1) Includes land, construction, leasing costs and allocated portion of structured parking and other shared infrastructure, if applicable.

19

The following table provides certain information about our land held or under pre-construction as of December 31, 2012,

including properties under ground lease to us:

Market/Submarket and Location

Strategic Land

Baltimore/Washington Corridor:

National Business Park

Columbia Gateway

Airport Square

Arundel Preserve

Subtotal

Northern Virginia;

Westfields Corporate Center

Westfields Park Center

Woodland Park

Patriot Ridge

Ashburn Crossing

Subtotal

San Antonio, Texas

8100 Potranco Road

Northwest Crossroads

Sentry Gateway

Subtotal

Huntsville, Alabama

St. Mary’s & King George Counties

Greater Baltimore

Suburban Maryland

Acres

Estimated
Developable
Square Feet

up to

186

22

5

84

297

23

33

5

11

10

82

9

31

38

78

443

44

49

49

1,792,000

520,000

84,000

1,150,000

3,546,000

400,000

400,000

225,000

739,000

120,000

1,884,000

125,000

375,000

658,000

1,158,000

4,173,000

109,000

1,340,000

510,000

Total strategic land held and pre-construction

1,042

12,720,000

Non-Strategic Land

Baltimore/Washington Corridor

Greater Baltimore

Suburban Maryland

Colorado Springs

Greater Philadelphia, Pennsylvania

Other (Charles County, MD)

Total non-strategic land held

7

138

107

175

8

217

652

65,000

1,352,000

1,000,000

2,570,000

604,000

967,000

6,558,000

Total land held and pre-construction

1,694

19,278,000

The following table provides certain information about our wholesale data center property as of December 31, 2012 (dollars in 
thousands):

Property and Location

Year
Built

Gross
Building
Area

Raised Floor
Square
Footage (1)

Initial
Stabilization
Critical Load
(in MWs) (2)

Initial
Stabilization
Critical Load 
Leased

MW
Operational

Costs
Incurred to 
Date (3)

Estimated
Costs to 
Completion
(3)

9651 Hornbaker Road - Manassas, VA 2010

233,000

100,000

18

22%

6

$207,785

$67,445

(1) Raised floor square footage is that portion of the gross building area in which tenants locate their computer servers.  Raised floor area is considered to be the 

net rentable square footage.

(2) Critical load is the power available for exclusive use of tenants in the property (expressed in terms of megawatts (“MWs”)).
(3)

Includes land, construction and leasing costs.

20

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Lease Expirations

The following table provides a summary schedule of the lease expirations for leases in place at our office properties as of 

December 31, 2012, assuming that none of the tenants exercise renewal options. This analysis includes the effect of early 
renewals completed on existing leases but excludes the effect of new tenant leases on 264,380 square feet executed but yet to 
commence as of December 31, 2012.

Year of Lease Expiration (1)

Number of
Leases
Expiring

Square Footage
of Leases
Expiring

Percentage of
Total
Occupied
Square Feet

Annualized
Rental
Revenue of 
Expiring
Leases (2)

Percentage of 
Total
Annualized
Rental Revenue 
Expiring (2)

Total Annualized
Rental Revenue
of Expiring
Leases Per
Occupied Square
Foot

(in thousands)

2013

2014

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025

146

101

112

79

96

45

35

33

20

12

6

2

4

2,442,746

2,221,075

2,737,514

1,637,241

1,842,182

1,250,397

1,024,008

1,294,803

561,641

793,969

149,308

29,528

556,372

14.8 % $

13.4 %

16.6 %

9.9 %

11.1 %

7.6 %

6.2 %

7.8 %

3.4 %

4.8 %

0.9 %

0.2 %

3.4 %

Total/Weighted Average

691

16,540,784

100.0 % $

71,083

63,401

72,790

43,799

49,748

32,563

29,610

35,590

15,855

23,235

2,868

802

20,512

461,856

15.4% $

13.7%

15.8%

9.5%

10.8%

7.1%

6.4%

7.7%

3.4%

5.0%

0.6%

0.2%

4.4%

100.0% $

29.10

28.54

26.59

26.75

27.01

26.04

28.92

27.49

28.23

29.26

19.21

27.15

36.87

27.92

With regard to leases expiring in 2013, we believe that the weighted average annualized rental revenue per occupied square 
foot for such leases at December 31, 2012 was, on average, approximately 5% to 8% higher than estimated current market 
contractual rents for the related space, with specific results varying by market.

The following table provides a summary schedule of the lease expirations for leases in place at our wholesale data center 

property as of December 31, 2012:

Year of Lease Expiration

Number of
Leases
Expiring

Raised Floor
Square Footage
Expiring

Critical Load
Leased (in
megawatts)

Critical Load
Used (in
megawatts)

2019
2020
2022

Total/Weighted Average

1
1
1
3

7,172

19,023

5,604

31,799

1

2

1

4

1.00
2.00
0.25
3.25

Annualized
Rental Revenue 
of Expiring 
Leases (2)
(in thousands)

$

$

2,098

4,232

391

6,721

(1) Most of our leases with the United States Government provide for consecutive one-year terms or provide for early termination rights. All of the leasing 

statistics set forth above assumed that the United States Government will remain in the space that it leases through the end of the respective arrangements, 
without ending consecutive one-year leases prematurely or exercising early termination rights. We reported the statistics in this manner because we manage 
our leasing activities using these same assumptions and believe these assumptions to be probable.

(2) Annualized rental revenue is the monthly contractual base rent as of December 31, 2012 multiplied by 12, plus the estimated annualized expense 

reimbursements under existing office leases.  Our computation of annualized rental revenue excludes the effect of lease incentives, although the effect of this 
exclusion is generally not material.

Item 3.  Legal Proceedings

We are not currently involved in any material litigation nor, to our knowledge, is any material litigation currently 
threatened against the Company (other than routine litigation arising in the ordinary course of business, substantially all of 
which is expected to be covered by liability insurance).

21

Item 4.  Mine Safety Disclosures

Not applicable.

PART II

Item 5.  Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity 
Securities

Market Information

Our common shares trade on the New York Stock Exchange (“NYSE”) under the symbol “OFC.” The table below shows 

the range of the high and low sale prices for our common shares as reported on the NYSE, as well as the quarterly common 
share dividends per share declared: 

2011
First Quarter
Second Quarter
Third Quarter
Fourth Quarter

2012
First Quarter
Second Quarter
Third Quarter
Fourth Quarter

 Price Range

 Low
$33.83
$30.63
$21.75
$19.35

 High
$36.90
$36.79
$32.07
$25.96

 Price Range

 Low
$20.58
$21.13
$21.36
$23.22

 High
$25.48
$24.05
$25.61
$26.12

 Dividends
  Per Share
$0.4125
$0.4125
$0.4125
$0.4125

 Dividends

  Per Share
$0.2750
$0.2750
$0.2750
$0.2750

The number of holders of record of our common shares was 608 as of December 31, 2012. This number does not include 

shareholders whose shares are held of record by a brokerage house or clearing agency, but does include any such brokerage 
house or clearing agency as one record holder.

We pay dividends at the discretion of our Board of Trustees.  Our ability to pay cash dividends will be dependent upon: (1) 

the cash flow generated from our operations; (2) cash generated or used by our financing and investing activities; and (3) the 
annual distribution requirements under the REIT provisions of the Code described above and such other factors as the Board of 
Trustees deems relevant.  Our ability to make cash dividends will also be limited by the terms of our Operating Partnership 
Agreement, as well as by limitations imposed by state law.  In addition, we are prohibited from paying cash dividends in excess 
of the amount necessary for us to qualify for taxation as a REIT if a default or event of default exists pursuant to the terms of 
our Revolving Credit Facility; this restriction does not currently limit our ability to pay dividends, and we do not believe that 
this restriction is reasonably likely to limit our ability to pay future dividends because we expect to comply with the terms of 
our Revolving Credit Facility.

Unregistered Sales of Equity Securities and Use of Proceeds

During the three months ended December 31, 2012, 139,696 of the Operating Partnership's common units were exchanged 
for 139,696 common shares in accordance with the Operating Partnership's Second Amended and Restated Limited Partnership 
Agreement, as amended. The issuance of these common shares was effected in reliance upon the exemption from registration 
under Section 4(2) of the Securities Act of 1933, as amended.

22

 
Common Shares Performance Graph

The graph and the table set forth below assume $100 was invested on December 31, 2007 in the common shares of 

Corporate Office Properties Trust. The graph and the table compare the cumulative return (assuming reinvestment of 
dividends) of this investment with a $100 investment at that time in the S&P 500 Index or the All Equity REIT Index of the 
National Association of Real Estate Investment Trusts (“NAREIT”):

Index
Corporate Office Properties Trust
S&P 500
NAREIT All Equity REIT Index

12/31/07
100.00
100.00
100.00

12/31/08
101.77
63.00
62.27

Period Ended

12/31/09
127.51
79.68
79.70

12/31/10
126.90
91.68
101.98

12/31/11
82.21
93.61
110.42

12/31/12
101.24
108.59
132.18

23

Item 6.  Selected Financial Data

The following table sets forth summary financial data as of and for each of the years ended December 31, 2008 through 
2012.  Since this information is only a summary, you should refer to our consolidated financial statements and notes thereto and 
the section of this report entitled “Management's Discussion and Analysis of Financial Condition and Results of Operations” 
for additional information.

Corporate Office Properties Trust and Subsidiaries
(in thousands, except per share data and number of properties)

Revenues

Revenues from real estate operations (1)
Construction contract and other service revenues

Total revenues

Expenses

Property operating expenses (1)(2)(3)
Depreciation and amortization associated with real estate 
operations (1)
Construction contract and other service expenses
Impairment losses
General, administrative and leasing expenses (3)(4)
Business development expenses and land carry costs (2)

Total operating expenses

Operating income
Interest expense (1)
Interest and other income
(Loss) gain on early extinguishment of debt
Loss on interest rate derivatives
Income (loss) from continuing operations before equity in 

(loss) income of unconsolidated entities and income taxes

Equity in (loss) income of unconsolidated entities
Income tax (expense) benefit (4)
Income (loss) from continuing operations
Discontinued operations (1)(2)(3)(5)
Income (loss) before gain on sales of real estate
Gain on sales of real estate, net of income taxes (1)(6)
Net income (loss)
Net loss (income) attributable to noncontrolling interests (4)
Net income (loss) attributable to Corporate Office Properties 

Trust

Preferred share dividends
Issuance costs associated with redeemed preferred shares (7)
Net (loss) income attributable to Corporate Office 

Properties Trust common shareholders

Basic earnings per common share (8)

(Loss) income from continuing operations
Net (loss) income

Diluted earnings per common share (8)

(Loss) income from continuing operations
Net (loss) income

2012

2011

2010

2009

2008

$ 454,171
73,836
528,007

$ 428,496
84,345
512,841

$ 387,559
104,675
492,234

$ 349,463
343,087
692,550

$ 326,223
188,385
514,608

167,161

162,397

146,617

123,769

109,967

113,480
70,576
43,214
31,900
5,711
432,042
95,965
(94,624)
7,172
(943)
—

7,570
(546)
(381)
6,643
13,677
20,320
21
20,341
636

20,977
(20,844)
(1,827)

113,111
81,639
83,478
30,314
6,122
477,061
35,780
(98,222)
5,603
(1,639)
(29,805)

(88,283)
(331)
6,710
(81,904)
(48,404)
(130,308)
2,732
(127,576)
8,148

(119,428)
(16,102)
—

97,897
102,302
—
28,501
6,403
381,720
110,514
(95,729)
9,568
—
—

24,353
1,376
(108)
25,621
17,054
42,675
2,829
45,504
(2,744)

42,760
(16,102)
—

$

$
$

$
$

(1,694) $ (135,530) $

26,658

(0.21) $
(0.03) $

(1.31) $
(1.97) $

(0.21) $
(0.03) $

(1.31) $
(1.97) $

0.17
0.43

0.17
0.43

$

$
$

$
$

81,446
336,519
—
27,877
5,259
574,870
117,680
(76,718)
5,164
—
—

46,126
(941)
(196)
44,989
16,310
61,299
—
61,299
(4,970)

56,329
(16,102)
—

40,227

0.44
0.70

0.44
0.70

75,264
184,142
—
28,739
2,206
400,318
114,290
(79,542)
2,070
8,101
—

44,919
(147)
(201)
44,571
15,655
60,226
1,090
61,316
(7,351)

53,965
(16,102)
—

37,863

0.50
0.77

0.49
0.76

$

$
$

$
$

Weighted average common shares outstanding – basic
Weighted average common shares outstanding – diluted

73,454
73,454

69,382
69,382

59,611
59,944

55,930
56,407

48,132
48,820

24

Balance Sheet Data (as of year end):
Total properties, net
Total assets (4)
Debt
Total liabilities (4)
Redeemable noncontrolling interest (4)
Total equity (4)(9)
Other Financial Data (for the year ended):
Cash flows provided by (used in):

Operating activities
Investing activities
Financing activities

Numerator for diluted EPS (4)
Diluted funds from operations (4)(9)
Diluted funds from operations per share (4)(9)
Cash dividends declared per common share
Property Data (as of year end):
Number of properties owned (10)
Total rentable square feet owned (10)

2012

2011

2010

2009

2008

$ 3,163,044
$ 3,653,759
$ 2,019,168
$ 2,206,962
10,298
$
$ 1,436,499

$ 3,352,975
$ 3,863,555
$ 2,426,303
$ 2,648,748
8,908
$
$ 1,205,899

$ 3,445,455
$ 3,844,517
$ 2,323,681
$ 2,521,379
9,000
$
$ 1,323,138

$ 3,029,900
$ 3,380,022
$ 2,053,841
$ 2,259,390
$
$ 1,120,632

$ 2,778,466
$ 3,114,239
$ 1,856,751
$ 2,031,816
—
$ 1,082,423

— $

$

$

$

156,436

194,817

103,701

152,143

191,838
$
$
13,744
$ (200,547) $
$
$
$
$

180,892
$
$ (260,387) $ (479,167) $ (349,076) $ (290,822)
92,067
37,135
143,592
2.52
1.425

$
(2,163) $ (136,567) $
$
$
$

324,571
25,587
148,645
2.30
1.61

155,746
39,217
152,626
2.46
1.53

165,720
2.13
1.10

53,062
0.72
1.65

$
$
$
$
$

$
$
$
$
$

$
$
$

208
18,831

238
20,514

256
20,432

253
19,543

240
18,559

(1) Certain prior period amounts pertaining to properties included in discontinued operations have been reclassified to conform with 

the current presentation. These reclassifications did not affect consolidated net income or shareholders’ equity.

(2) Certain prior period amounts pertaining to expenses on properties not in operations have been reclassified to conform with the 
current presentation, as described in Note 2 to our consolidated financial statements in the section entitled “Reclassifications.” 
These reclassifications did not affect consolidated net income or shareholders’ equity.

(3) Certain prior period amounts pertaining to costs expensed in connection with marketing space for lease to prospective tenants have 
been reclassified to conform with the current presentation, as described in Note 2 to our consolidated financial statements in the 
section entitled “Reclassifications.” These reclassifications did not affect consolidated net income or shareholders’ equity.

(4) Certain amounts as of, and for the year ended, December 31, 2011 were revised in connection with errors identified in 2012 

described in Note 2 to our Consolidated Financial Statements in the section entitled “Revisions.” These revisions affected
consolidated net income and shareholders’ equity.

(5)

Includes income derived from three operating properties disposed in 2008, three operating properties disposed in 2010, 23 
operating properties disposed in 2011, 35 operating properties disposed in 2012 and 17 operating properties classified as held for 
sale at December 31, 2012 (see Note 17 to our consolidated financial statements). 

(6) Reflects gain from sales of properties and unconsolidated real estate joint ventures not associated with discontinued operations. 

(7) Reflects a decrease to net income available to common shareholders pertaining to the original issuance costs recognized upon the 

redemption of the Series G preferred shares of beneficial interest in 2012. 

(8) Basic and diluted earnings per common share are calculated based on amounts attributable to common shareholders of Corporate 

Office Properties Trust.

(9) For definitions of diluted funds from operations per share and diluted funds from operations and reconciliations of these measures 
to their comparable measures under generally accepted accounting principles, you should refer to the section entitled “Funds from 
Operations” within the section entitled "Management's Discussion and Analysis of Financial Condition and Results of Operations." 

(10) Amounts reported reflect only operating office properties. 

25

Item 7.  Management's Discussion and Analysis of Financial Condition and Results of Operations

You should refer to our consolidated financial statements and the notes thereto and our Selected Financial Data table as 

you read this section.

This section contains “forward-looking” statements, as defined in the Private Securities Litigation Reform Act of 1995, 

that are based on our current expectations, estimates and projections about future events and financial trends affecting the 
financial condition and operations of our business.  Forward-looking statements can be identified by the use of words such as 
“may,” “will,” “should,” “could,” “believe,” “anticipate,” “expect,” “estimate,” “plan” or other comparable terminology.
Forward-looking statements are inherently subject to risks and uncertainties, many of which we cannot predict with accuracy 
and some of which we might not even anticipate. Although we believe that the expectations, estimates and projections 
reflected in such forward-looking statements are based on reasonable assumptions at the time made, we can give no assurance 
that these expectations, estimates and projections will be achieved.  Future events and actual results may differ materially from 
those discussed in the forward-looking statements.  Important factors that may affect these expectations, estimates and 
projections include, but are not limited to: 

•

•
•

•
•

•
•

•

•

•
•
•

general economic and business conditions, which will, among other things, affect office property and data center demand 
and rents, tenant creditworthiness, interest rates, financing availability and property values; 
adverse changes in the real estate markets, including, among other things, increased competition with other companies; 
governmental actions and initiatives, including risks associated with the impact of a government shutdown or budgetary 
reductions or impasses, such as a reduction in rental revenues, non-renewal of leases and/or a curtailment of demand for 
additional space by our strategic customers;
our ability to borrow on favorable terms; 
risks of real estate acquisition and development activities, including, among other things, risks that development projects 
may not be completed on schedule, that tenants may not take occupancy or pay rent or that development or operating costs 
may be greater than anticipated;
our ability to sell properties included in our Strategic Reallocation Plan;
risks of investing through joint venture structures, including risks that our joint venture partners may not fulfill their 
financial obligations as investors or may take actions that are inconsistent with our objectives;
changes in our plans for properties or views of market economic conditions or failure to obtain development rights, either 
of which could result in recognition of significant impairment losses;
our ability to satisfy and operate effectively under Federal income tax rules relating to real estate investment trusts and 
partnerships;
the dilutive effects of issuing additional common shares; 
our ability to achieve projected results; and
environmental requirements.

We undertake no obligation to update or supplement forward-looking statements.

Overview

We are an office real estate investment trust (“REIT”) that focuses primarily on serving the specialized requirements of 
United States Government agencies and defense contractors, most of whom are engaged in defense information technology and 
national security related activities. We generally acquire, develop, manage and lease office and data center properties 
concentrated in large office parks located near knowledge-based government demand drivers and/or in targeted markets or 
submarkets in the Greater Washington, DC/Baltimore region.

Our revenues relating to real estate operations are derived from rents and property operating expense reimbursements 
earned from tenants leasing space in our properties.  Most of our expenses relating to our real estate operations take the form 
of: property operating costs, such as real estate taxes, utilities and repairs and maintenance; and depreciation and amortization 
associated with our operating properties.  Most of our profitability from real estate operations depends on our ability to 
maintain high levels of occupancy and increase rents, which is affected by a number of factors, including, among other things, 
our tenants’ ability to fulfill their lease obligations and their continuing space needs based on, among other things, employment 
levels, business confidence, competition and general economic conditions of the markets in which we operate.

Our strategy for operations and growth focuses on serving the specialized requirements of United States Government 
agencies and defense contractors, most of whom are engaged in defense information technology and national security related 
activities. These tenants’ missions generally pertain more to knowledge-based activities (such as cyber security, research and 
development and other highly technical defense and security areas) than to force structure (troops) and weapon system 

26

 
 
production. As a result of this strategy, a large concentration of our revenue is derived from several large tenants. As of 
December 31, 2012, 64.5% of our annualized rental revenue (as defined below) from office properties was from our 20 largest
tenants, 40.9% from our four largest tenants and 24.2% from our largest tenant, the United States Government.  In addition, as 
of December 31, 2012, 70.0% of the total annualized rental revenue of our office properties held for long-term investment was 
from properties located near defense installations and other knowledge-based government demand drivers (referred to 
elsewhere as “Strategic Demand Drivers”), or that were otherwise at least 50% leased by United States Government agencies or 
defense contractors; we refer to these properties herein as “Strategic Tenant Properties.” 

We made significant progress in 2012 under the Strategic Reallocation Plan that we launched in 2011, which entails the 
disposition by the end of 2013 of approximately $562.0 million in office properties and land no longer closely aligned with our 
strategy, and use of the proceeds to invest in Strategic Tenant Properties, to repay borrowings and for general corporate 
purposes.  In 2012, we completed dispositions of 35 operating properties totaling 2.3 million square feet and non-operating 
properties for aggregate transaction values totaling $313.6 million. Aggregate dispositions since implementation of the 
Strategic Reallocation Plan total $390.3 million, including 58 operating properties totaling 3.2 million square feet. We used 
most of the proceeds from these sales to pay down our Revolving Credit Facility.  In 2012, we also approved a plan for the 
future disposition of our office properties and developable land in Greater Philadelphia, Pennsylvania because the properties no 
longer meet our strategic investment criteria; we expect this disposition to occur in the next four years.

Our operations in recent years have been hindered by continuing delays in Federal budget approvals and mounting 
uncertainty regarding the potential for future reductions in government spending targeting defense, as well as the otherwise 
challenging economic conditions in the United States.  Furthermore, the Budget Control Act passed in 2011, which imposed 
caps on the Federal budget in order to achieve targeted spending levels over the 2013-2021 fiscal years, currently requires that 
$110 billion be sequestered from the United States Government’s funding levels for the 2013 fiscal year, approximately 50% of 
which could come from defense; this action could feasibly begin to occur as early as March 2013, although we believe that 
such sequestrations could be further deferred, reduced or eliminated if reduction levels are agreed to in the 2013 Federal 
budget. This defense spending uncertainty has delayed our progress in leasing existing properties and new construction 
proximate to Strategic Demand Drivers.  In addition, the otherwise challenging economic conditions have prompted certain 
operations to consolidate and businesses to close, downsize their space requirements or cancel or delay expansion plans in our 
regions, placing downward pressure on occupancy and rental rates.

Despite these challenges, our office property portfolio’s occupancy improved to 87.8% as of December 31, 2012, a 1.6% 

increase over year end 2011. We also successfully completed 3.3 million square feet of leasing, including 1.2 million of 
construction and redevelopment space. The improvement in our portfolio’s occupancy was attributable primarily to an 
improvement in occupancy of our Same Office Properties (defined below) to 89.1% at December 31, 2012 (up from 88.3% at 
December 31, 2011) and our dispositions in 2012 of lower occupancy properties under the Strategic Reallocation Plan.  Our 
properties proximate to Strategic Demand Drivers were 92.1% occupied at December 31, 2012, notably stronger than our other 
properties, which were 84.4% occupied.

We believe that the continuing Federal budget discussions will eventually lead to modest additional reductions in defense 

spending.  However, if such reductions were to occur, we continue to believe that our properties’ proximate to Strategic 
Demand Drivers will not be significantly affected, and could position us for future growth, for reasons that include the 
following:

•

•

•

we expect defense spending reductions, should they occur, will be targeted more towards force structure (troops) and 
weapon system production than towards the knowledge-based activities of most of our tenants, which we believe are 
considered increasingly critical to our national security;
in 2011, Federal agencies completed their relocation to the following government installations that serve as demand drivers 
to our portfolio of Strategic Tenant Properties primarily in connection with mandates by the Base Realignment and Closure 
Commission of the United States Congress (“BRAC”): Fort George G. Meade (which also houses the recently-formed 
United States Cyber Command), Redstone Arsenal, Fort Belvoir, San Antonio and Aberdeen Proving Ground; the shifting 
of jobs by defense contractors supporting these agencies that we believe still needs to occur has been delayed by the 
defense spending uncertainty;
if defense construction spending is cut, government demand to lease space in our business parks could possibly increase if 
the government decides to lease space instead of build it. 

We believe that the outlook for our properties proximate to Strategic Demand Drivers would be hindered more by an extended 
period of uncertainty regarding future defense spending reductions than by the actual spending reductions.

27

The relative contribution to our operations by properties not proximate to Strategic Demand Drivers has decreased due to 

our property dispositions in 2011 and 2012, and we expect that trend to continue as we complete the Strategic Reallocation 
Plan.  Nevertheless, our market strategy is to continue to own these types of properties in targeted markets or submarkets in the 
Greater Washington, DC/Baltimore region with strong growth attributes. These properties tend to be more subject to general 
market conditions that have been affected by the slow economic recovery. As a result, we expect a longer road to recovery to 
pre-recession occupancy levels for these properties.

Our capital strategy is aimed at maintaining a flexible capital structure, and we believe that we significantly improved our 
balance sheet and expanded our access to capital in 2012 not only through our execution of the Strategic Reallocation Plan but 
also by:

•

•

•

•

•

issuing 6.9 million Series L Cumulative Preferred Shares (the “Series L Preferred Shares”) at a price of $25.00 per share 
for net proceeds of $165.7 million after underwriting discounts but before offering expenses. These shares are nonvoting, 
redeemable for cash at $25.00 per share at our option on or after June 27, 2017 and accrue dividends equal to 7.375% of 
the liquidation preference. The net proceeds were used to pay down our Revolving Credit Facility and for general 
corporate purposes;
redeeming all of our Series G Preferred Shares of beneficial interest (the “Series G Preferred Shares”) at a price of $25.00
per share, or $55.0 million in the aggregate, plus accrued and unpaid dividends thereon through the date of redemption. 
These shares accrued dividends equal to 8.0% of the liquidation preference;
completing a public offering of 8.6 million common shares at a price of $24.75 per share for net proceeds of $204.9
million after underwriter discounts but before offering expenses, and using the proceeds to pay down our Revolving Credit 
Facility and for general corporate purposes; 
entering into unsecured term loan agreements, under which we borrowed $370 million in the aggregate.  The net proceeds 
from these borrowings were used to pay down our Revolving Credit Facility; and
established an at-the-market (“ATM”) stock offering program under which we may, from time to time, offer and sell 
common shares in “at the market” stock offerings having an aggregate gross sales price of up to $150.0 million.

These activities contributed towards our: improving the relationship of our outstanding debt relative to both assets and adjusted 
earnings before interest expense, income taxes, depreciation, amortization (“adjusted EBITDA,” which we define below); 
improving the relationship of our interest expense to adjusted EBITDA; and paying down our Revolving Credit Facility to zero 
by the end of 2012, providing significant liquidity and flexibility for future investing and financing activities.

Our 2012 investing activities grew our portfolio’s concentration in Strategic Tenant Properties through the dispositions of 

nonstrategic properties discussed above and by:

•

•

placing into service an aggregate of 371,000 square feet in four newly constructed properties proximate to Strategic 
Demand Drivers that were 45.8% leased as of December 31, 2012; and 
acquiring for $48.3 million a property in Herndon, Virginia totaling 202,000 square feet that was 100% leased to a defense 
contractor.

We discuss significant factors contributing to changes in our net income attributable to common shareholders and diluted 

earnings per share over the last three years in the section below entitled “Results of Operations.”  In addition, the section below 
entitled “Liquidity and Capital Resources” includes discussions of, among other things:

•
•
•

how we expect to generate cash for short and long-term capital needs; 
our off-balance sheet arrangements in place that are reasonably likely to affect our financial condition; and
our commitments and contingencies.

We refer to the measure “annualized rental revenue” in various sections of the Management's Discussion and Analysis of 

Financial Condition and Results of Operations section of this Annual Report on Form 10-K. Annualized rental revenue is a 
measure that we use to evaluate the source of our rental revenue as of a point in time.  It is computed by multiplying by 12 the 
sum of monthly contractual base rents and estimated monthly expense reimbursements under active leases as of a point in time.
Our computation of annualized rental revenue excludes the effect of lease incentives, although the effect of this exclusion is 
generally not material. We consider annualized rental revenue to be a useful measure for analyzing revenue sources because, 
since it is point-in-time based, it does not contain increases and decreases in revenue associated with periods in which lease 
terms were not in effect; historical revenue under generally accepted accounting principles in the United States of America
(“GAAP”) does contain such fluctuations. We find the measure particularly useful for leasing, tenant, segment and industry 
analysis.

28

Critical Accounting Policies and Estimates

Our consolidated financial statements are prepared in accordance with GAAP, which require us to make certain estimates 

and assumptions. A summary of our significant accounting policies is provided in Note 2 to our consolidated financial 
statements. The following section is a summary of certain aspects of those accounting policies involving estimates and 
assumptions that (1) require our most difficult, subjective or complex judgments in accounting for uncertain matters or matters 
that are susceptible to change and (2) materially affect our reported operating performance or financial condition.  It is possible 
that the use of different reasonable estimates or assumptions in making these judgments could result in materially different
amounts being reported in our consolidated financial statements. While reviewing this section, you should refer to Note 2 to 
our consolidated financial statements, including terms defined therein.

As described further in Note 2 to our Consolidated Financial Statements in the section entitled “Revisions,” during 2012, 

we identified errors in the consolidated financial statements pertaining to our:

•

recognition of a deferred tax asset resulting from an impairment of assets in the fourth quarter of 2011 that failed to 
consider a partial reversal of that asset that would result from a cancellation of related inter-company debt in the first 
quarter of 2012; 
over-accrual of incentive compensation cost for the year ended December 31, 2011;

•
• misapplication of accounting guidance requiring that we recognize loss allocations to a noncontrolling interest holder in a 
consolidated real estate joint venture associated with decreases in such holder’s claim on the book value of the joint 
venture’s assets, despite the fact that the real estate held by the joint venture was under development and the joint venture 
had no underlying losses under GAAP; and
reporting for a noncontrolling interest in a consolidated real estate joint venture for which the holder of such interest 
possesses the right of requiring us to acquire the interest at fair value. 

•

With respect to the errors described in the first two bullets above, we assessed the materiality of these errors on the financial 
statements in connection with previously filed periodic reports and concluded at such time that the errors were not material to 
any prior annual or interim periods.  In assessing the cumulative effect of all such errors, we have since concluded that a 
correction of the errors in 2012 could be considered material to our 2012 net income. Accordingly, the consolidated financial 
statements as of, and for the year ended, December 31, 2011 included in the Annual Report on Form 10-K were revised.  For 
each of the calendar quarters from January 1, 2011 through September 30, 2011, amounts included in Note 20 to the 
consolidated financial statements pertaining to such periods have been revised, and we will revise the financial statements in 
future filings including such periods.

Acquisitions of Properties

When we acquire properties, we allocate the purchase price to numerous tangible and intangible components.  Most of the 

terms in this bullet section are discussed in further detail in Note 2 to the consolidated financial statements entitled 
“Acquisitions of Properties.”  Our process for determining the allocation to these components requires many estimates and 
assumptions, including the following: (1) determination of market rental rates; (2) estimation of leasing and tenant 
improvement costs associated with the remaining term of acquired leases; (3) assumptions used in determining the in-place 
lease value, if-vacant value and tenant relationship value, including the rental rates, period of time that it will take to lease 
vacant space and estimated tenant improvement and leasing costs; and (4) allocation of the if-vacant value between land and 
building. A change in any of the above key assumptions, which are subjective, can materially change not only the presentation 
of acquired properties in our consolidated financial statements but also our reported results of operations. The allocation to 
different components affects the following:

•

•

•

the amount of the purchase price allocated among different categories of assets and liabilities on our consolidated balance 
sheets; the amount of costs assigned to individual properties in multiple property acquisitions; and the amount of gain 
recognized in our consolidated statements of operations should we determine that the fair value of the acquisition exceeds 
its cost;
where the amortization of the components appear over time in our consolidated statements of operations. Allocations to 
above- and below-market leases are amortized into rental revenue, whereas allocations to most of the other tangible and 
intangible assets are amortized into depreciation and amortization expense. As a REIT, this is important to us since much 
of the investment community evaluates our operating performance using non-GAAP measures such as funds from 
operations, the computation of which includes rental revenue but does not include depreciation and amortization expense; 
and
the timing over which the items are recognized as revenue or expense in our consolidated statements of operations.  For 
example, for allocations to the as-if vacant value, the land portion is not depreciated and the building portion is depreciated 

29

over a longer period of time than the other components (generally 40 years). Allocations to above- and below-market 
leases, in-place lease value and tenant relationship value are amortized over significantly shorter timeframes, and if 
individual tenants' leases are terminated early, any unamortized amounts remaining associated with those tenants are 
written off upon termination. These differences in timing can materially affect our reported results of operations.  In 
addition, we establish lives for tenant relationship values based on our estimates of how long we expect the respective 
tenants to remain in the properties.

Impairment of Long-Lived Assets

We assess each of our operating properties for impairment quarterly using cash flow projections and estimated fair values 

that we derive for each of the properties.  We update the leasing and other assumptions used in these projections regularly,
paying particular attention to properties that have experienced chronic vacancy or face significant market challenges.  We
review our plans and intentions for our development projects and land parcels quarterly.  Each quarter, we also review the 
reasonableness of changes in our estimated operating property fair values from amounts estimated in the prior quarter.  If 
events or changes in circumstances indicate that the carrying values of certain operating properties, properties in development 
or land held for future development may be impaired, we perform a recovery analysis for such properties.  For long-lived assets 
to be held and used, we analyze recoverability based on the estimated undiscounted future cash flows expected to be generated 
from the operations and eventual disposition of the assets over, in most cases, a ten-year holding period.  If we believe there is a 
significant possibility that we might dispose of the assets earlier, we analyze recoverability using a probability weighted 
analysis of the estimated undiscounted future cash flows expected to be generated from the operations and eventual disposition 
of the assets over the various possible holding periods.  If the analysis indicates that the carrying value of a tested property is 
not recoverable from estimated future cash flows, it is written down to its estimated fair value and an impairment loss is 
recognized.  If and when our plans change, we revise our recoverability analyses to use the cash flows expected from the 
operations and eventual disposition of each asset using holding periods that are consistent with our revised plans.

Property fair values are determined based on contract prices, indicative bids, discounted cash flow analyses or yield 

analyses. Estimated cash flows used in such analyses are based on our plans for the property and our views of market and 
economic conditions. The estimates consider items such as current and future rental rates, occupancies for the tested property 
and comparable properties, estimated operating and capital expenditures and recent sales data for comparable properties; most 
of these items are influenced by market data obtained from third party sources such as CoStar Group and real estate leasing and 
brokerage firms and our direct experience with the properties and their markets.  Determining the appropriate capitalization or 
yield rate also requires significant judgment and is typically based on many factors, including the prevailing rate for the market 
or submarket, as well as the quality and location of the properties.  Changes in the estimated future cash flows due to changes 
in our plans for a property, views of market and economic conditions and/or our ability to obtain development rights could 
result in recognition of impairment losses which could be substantial.

Properties held for sale are carried at the lower of their carrying values (i.e., cost less accumulated depreciation and any 
impairment loss recognized, where applicable) or estimated fair values less costs to sell. Accordingly, decisions to sell certain 
operating properties, properties in development or land held for development will result in impairment losses if carrying values 
of the specific properties exceed their estimated fair values less costs to sell. The estimates of fair value consider matters such 
as recent sales data for comparable properties and, where applicable, contracts or the results of negotiations with prospective 
purchasers. These estimates are subject to revision as market conditions, and our assessment of such conditions, change. 

Assessment of Lease Term

As discussed above, a significant portion of our portfolio is leased to the United States Government, and the majority of 
those leases consist of a series of one-year renewal options. Applicable accounting guidance requires us to recognize minimum 
rental payments on a straight-line basis over the terms of each lease and to assess the lease terms as including all periods for 
which failure to renew the lease imposes a penalty on the lessee in such amounts that a renewal appears, at the inception of the 
lease, to be reasonably assured.  Factors to consider when determining whether a penalty is significant include the uniqueness 
of the purpose or location of the property, the availability of a comparable replacement property, the relative importance or 
significance of the property to the continuation of the lessee's line of business and the existence of leasehold improvements or 
other assets whose value would be impaired by the lessee vacating or discontinuing use of the leased property. We have 
concluded for a number of our leases, based on the factors above, that the United States Government's exercise of all of those 
renewal options is reasonably assured.  Changes in these assessments could result in the write-off of any recorded assets 
associated with straight-line rental revenue and acceleration of depreciation and amortization expense associated with costs we 
have incurred related to these leases.

30

Revenue Recognition on Tenant Improvements

Most of our leases involve some form of improvements to leased space. When we are required to provide improvements 
under the terms of a lease, we need to determine whether the improvements constitute landlord assets or tenant assets.  If the 
improvements are landlord assets, we capitalize the cost of the improvements and recognize depreciation expense associated 
with such improvements over the shorter of the useful life of the assets or the term of the lease and recognize any payments 
from the tenant as rental revenue over the term of the lease.  If the improvements are tenant assets, we defer the cost of 
improvements funded by us as a lease incentive asset and amortize it as a reduction of rental revenue over the term of the lease.
Our determination of whether improvements are landlord assets or tenant assets also may affect when we commence revenue 
recognition in connection with a lease. 

In determining whether improvements constitute landlord or tenant assets, we consider numerous factors that may require 

subjective or complex judgments, including: whether the improvements are unique to the tenant or reusable by other tenants; 
whether the tenant is permitted to alter or remove the improvements without our consent or without compensating us for any 
lost fair value; whether the ownership of the improvements remains with us or remains with the tenant at the end of the lease 
term; and whether the economic substance of the lease terms is properly reflected.

Collectability of Accounts and Deferred Rent Receivable

Allowances for doubtful accounts and deferred rent receivable are established based on quarterly analyses of the risk of 
loss on specific accounts. The analyses place particular emphasis on past-due accounts and consider information such as the 
nature and age of the receivables, the payment history of the tenants, the financial condition of the tenants and our assessment 
of their ability to meet their lease obligations, the basis for any disputes and the status of related negotiations.  Our estimate of 
the required allowance is subject to revision as these factors change and is sensitive to the effects of economic and market 
conditions on tenants.

Accounting Method for Investments

We use three different accounting methods to report our investments in entities: the consolidation method; the equity 
method; and the cost method (see Note 2 to our consolidated financial statements). We use the consolidation method when we 
own most of the outstanding voting interests in an entity and can control its operations. We also consolidate certain entities 
when control of such entities can be achieved through means other than voting rights (“variable interest entities” or “VIEs”) if 
we are deemed to be the primary beneficiary.  Generally, this applies to entities for which either: (1) the equity investors (if 
any) lack one or more of the essential characteristics of a controlling financial interest; (2) the equity investment at risk is 
insufficient to finance that entity's activities without additional subordinated financial support; or (3) the equity investors have 
voting rights that are not proportionate to their economic interests and the activities of the entity involve, or are conducted on 
behalf of, an investor with a disproportionately small voting interest. We use the equity method of accounting when we own an 
interest in an entity and can exert significant influence over, but cannot control, the entity's operations.

In making these determinations, we need to make subjective estimates and judgments regarding the entity's future 

operating performance, financial condition, future valuation and other variables that may affect the cash flows of the entity. We
must consider both our and our partner's ability to participate in the management of the entity’s operations and make decisions 
that allow the parties to manage their economic risks. We may also need to estimate the probability of different scenarios 
taking place over time and their effect on the partners’ cash flows. The conclusion reached as a result of this process affects
whether or not we use the consolidation method in accounting for our investment or the equity method. Whether or not we 
consolidate an investment can materially affect our consolidated financial statements.

Accounting for Interest Rate Derivatives

We use interest rate derivatives to hedge the cash flows associated with interest rates on debt, including forecasted 

borrowings. When we designate a derivative as a cash flow hedge, we defer the effective portion of changes in its fair value to 
the accumulated other comprehensive income (loss) section of shareholders' equity and recognize the ineffective portion of 
changes in fair value of derivatives in earnings.  If and when a derivative ceases to qualify as a cash flow hedge, we reclassify 
the associated accumulated other comprehensive income (loss) to net earnings (loss).  Our accounting for derivatives requires 
that we make judgments in determining the nature of the derivatives and their effectiveness as hedges, including ones regarding 
the likelihood that a forecasted transaction will take place. Therefore, these judgments could materially affect our consolidated 
financial statements. 

31

 
Concentration of Operations

Customer Concentration of Property Operations

The table below sets forth the 20 largest tenants in our portfolio of office properties based on percentage of annualized 

rental revenue:

Tenant
United States of America
Northrop Grumman Corporation (1)
Booz Allen Hamilton, Inc.
Computer Sciences Corporation (1)
General Dynamics Corporation  (1)
CareFirst, Inc.
The MITRE Corporation
ITT Exelis (1)
The Aerospace Corporation (1)
Wells Fargo & Company (1)
Kratos Defense & Security Solution, Inc. (1)
L-3 Communications Holdings, Inc. (1)
The Boeing Company (1)
AT&T Corporation (1)
Raytheon Company (1)
Ciena Corporation
Science Applications International Corporation (1)
Lockheed Martin Corporation
The Johns Hopkins Institutions (1)
Unisys Corporation
Comcast Corporation (1)
Merck & Co., Inc. (1)
First Mariner Bank (1)
Subtotal of 20 largest tenants
All remaining tenants
Total

Percentage of Annualized Rental
Revenue of Office Properties
for 20 Largest Tenants as of December 31,
2011

2010

2012

24.2%
6.3%
5.5%
4.8%
3.6%
1.9%
1.9%
1.7%
1.7%
1.7%
1.5%
1.4%
1.4%
1.2%
1.1%
1.0%
1.0%
0.8%
0.8%
0.8%
N/A
N/A
N/A
64.5%
35.5%
100.0%

22.2%
6.9%
5.1%
4.8%
1.5%
1.6%
1.8%
1.7%
1.7%
1.7%
1.4%
1.6%
1.3%
1.2%
1.0%
1.1%
0.9%
N/A
0.8%
0.8%
1.2%
N/A
N/A
60.3%
39.7%
100.0%

21.6%
7.2%
4.7%
4.1%
1.0%
1.7%
1.8%
1.8%
1.7%
1.6%
1.4%
1.6%
1.3%
1.2%
N/A
1.0%
N/A
N/A
0.8%
0.9%
1.3%
0.6%
0.6%
57.9%
42.1%
100.0%

(1) Includes affiliated organizations and agencies and predecessor companies.

The United States Government’s concentration increased each of the last two years in large part due to it taking occupancy of a 
significant portion of our newly-constructed square feet placed into service and our significant dispositions of properties in 
which it was not a tenant.

Our Strategic Tenant Properties accounted for 70.0% of our annualized rental revenue from office properties held for long-

term investment at December 31, 2012. We believe that we are well positioned for future growth in the concentration of our 
revenue derived from customers in these sectors, as discussed further in the section in Item 1 to this Annual Report on Form 10-
K entitled “Business and Growth Strategies.”

32

Geographic Concentration of Property Operations

The table below sets forth the regional allocation of our annualized rental revenue of office properties as of the end of the 

last three calendar years:

Region
Baltimore/Washington Corridor
Northern Virginia
San Antonio
Washington, DC - Capitol Riverfront
St. Mary’s and King George Counties
Greater Baltimore
Suburban Maryland
Colorado Springs
Greater Philadelphia
Other

Percentage of Annualized Rental
Revenue of Office
Properties as of December 31,
2011

2010

2012

47.5%
19.1%
6.3%
3.1%
3.4%
8.8%
1.7%
5.4%
2.0%
2.7%
100.0%

45.6%
16.0%
5.8%
3.0%
3.4%
12.6%
4.1%
5.1%
1.7%
2.7%
100.0%

44.1%
16.4%
5.7%
3.4%
2.9%
14.9%
3.9%
5.2%
1.5%
2.0%
100.0%

2012

2010

Number of
Office Properties
as of December 31,
2011
111
17
9
2
19
46
8
21
2
3
238

98
19
8
2
19
32
3
21
3
3
208

112
17
8
2
18
66
8
21
2
2
256

The most significant changes in our regional allocations set forth above were due to newly-constructed properties placed into 
service and our significant dispositions of properties in the Greater Baltimore and Suburban Maryland regions. 

Occupancy and Leasing

Office Properties

The tables below set forth occupancy information pertaining to our portfolio of operating office properties:

Occupancy rates at period end

Total
Baltimore/Washington Corridor
Northern Virginia
San Antonio
Washington, DC - Capitol Riverfront
St. Mary’s and King George Counties
Greater Baltimore
Suburban Maryland
Colorado Springs
Greater Philadelphia
Other

December 31,
2011

2010

2012

87.8%
89.4%
89.2%
96.4%
89.0%
85.9%
78.6%
94.1%
77.8%
100.0%
94.6%

86.2%
87.9%
84.8%
90.7%
91.6%
87.3%
84.5%
79.6%
74.9%
99.7%
100.0%

87.6%
88.1%
91.9%
100.0%
98.5%
86.8%
85.0%
76.5%
76.2%
100.0%
100.0%

Average contractual annual rental rate per square foot at year end (1) $ 27.92

$ 26.59

$ 25.58

(1)  Includes estimated expense reimbursements.

33

 
 
 
 
December 31, 2011
Square feet vacated upon lease expiration (1)
Occupancy of previously vacated space in connection with new lease (2)
Square feet constructed or redeveloped
Acquisition
Dispositions
Other changes
December 31, 2012

Rentable
Square Feet

Occupied
Square Feet

(in thousands)

20,514
—
—
425
202
(2,302)
(8)
18,831

17,685
(782)
717
548
202
(1,833)
4
16,541

(1)  Includes lease terminations and space reductions occurring in connection with lease renewals.
(2) Excludes occupancy of vacant square feet acquired or developed.

Please refer to the section above entitled “Overview” for discussion regarding our leasing activity in 2012 and our expectations 
regarding the future outlook. As the table above reflects, much of the increase in our total occupancy from 2011 to  2012 was 
attributable to our disposition of properties with lower occupancy rates.  Occupancy of our Same Office Properties was 89.1%
at December 31, 2012, up slightly from 88.3% at December 31, 2011.

In 2012, we completed 3.3 million square feet of leasing, including 1.2 million of construction and redevelopment space.

Our construction leasing was highlighted by: Strategic Demand Driver leasing of 363,000 square feet in three properties 
proximate to Redstone Arsenal in Huntsville (our first construction leasing in that region) and 115,000 square feet in 
Riverwood Corporate Park in the Baltimore/Washington Corridor; and 315,000 square feet in two properties on land we 
acquired in Ashburn, Virginia, a market we were targeting to add to our Northern Virginia holdings. At December 31, 2012, we 
had 1.4 million square feet under construction that was 67% leased.

In 2012, we renewed 64.3% of the square footage of our lease expirations (including the effect of early renewals). The

annualized rents of these renewals decreased on average by approximately 4.2% and revenue under GAAP increased on 
average by approximately 2.2% relative to the leases previously in place for the space; these leases had a weighted average 
lease term of approximately 3.3 years and the average estimated tenant improvements and lease costs associated with 
completing this leasing was approximately $6.35 per square foot. 

We believe that our continuing exposure to the challenging leasing environment described above in the section entitled 
“Overview” is mitigated to a certain extent by the generally long-term nature of our leases and the staggered timing of our 
future lease expirations.  Our weighted average lease term for office properties at December 31, 2012 was approximately four
years. The table below sets forth as of December 31, 2012 our scheduled lease expirations of office properties by region in 
terms of percentage of annualized rental revenue:

Baltimore/Washington Corridor
Northern Virginia
San Antonio
Washington, DC - Capitol Riverfront
St. Mary’s and King George Counties
Greater Baltimore
Suburban Maryland
Colorado Springs
Greater Philadelphia
Other
Total

Expiration of Annualized Rental

Revenue of Office Properties

2013
11.2%
0.9%
0.0%
1.1%
0.8%
0.4%
0.3%
0.7%
0.0%
0.0%

2015
2014
7.8%
4.7%
4.5%
5.6%
0.0%
0.0%
0.3%
0.7%
1.1%
0.7%
1.0%
0.5%
0.0%
0.1%
0.5%
0.7%
0.6%
0.0%
0.0%
0.7%
15.4% 13.7% 15.8%

2017
2016
6.5%
5.6%
2.3%
1.1%
0.0%
0.0%
0.0%
0.4%
0.0%
0.3%
1.2%
1.4%
0.1%
0.0%
0.6%
0.6%
0.0%
0.0%
0.0%
0.0%
9.5% 10.8%

Total
Thereafter
47.5%
11.7%
19.1%
4.7%
6.3%
6.3%
3.1%
0.6%
3.4%
0.5%
8.8%
4.3%
1.7%
1.2%
5.4%
2.3%
2.0%
1.4%
2.0%
2.7%
34.9% 100.0%

With regard to leases expiring in 2013, we believe that the weighted average annualized rental revenue per occupied square 
foot for such leases at December 31, 2012 was, on average, approximately 5% to 8% higher than estimated current market 
contractual rents for the related space, with specific results varying by market.

34

 
As noted above, most of the leases with our largest tenant, the United States Government, provide for consecutive one-year 

terms or provide for early termination rights; all of the leasing statistics set forth above assume that the United States 
Government will remain in the space that they lease through the end of the respective arrangements, without ending 
consecutive one-year leases prematurely or exercising early termination rights. 

Wholesale Data Center Property

Our wholesale data center property, which upon completion is expected to have a critical load of 18 megawatts, had six
megawatts in operation at December 31, 2012, of which four were leased to tenants with further expansion rights of up to a 
combined five megawatts. This leasing includes our completion in 2012 of a new lease that provides for an initial commitment 
of one megawatt with further expansion rights for one additional megawatt, which was our first lease for the property since its 
acquisition in 2010. We expect that leasing of this property could continue to be slow, and expect, due to the long lease 
commencement lead time required for this type of property, that any new leasing completed in 2013 will contribute minimally 
to our income for that year. We plan to hold this property long-term.  However, if our strategic plan for this property changes, 
we could recognize a significant impairment charge.

Results of Operations

We evaluate the operating performance of our properties using NOI from real estate operations, our segment performance 

measure derived by subtracting property operating expenses from revenues from real estate operations.  We view our NOI from 
real estate operations as comprising the following primary categories of operating properties:

•

•
•
•
•

•

office properties owned and 100% operational throughout the two years being compared, excluding operating properties 
disposed or held for future disposition.  We define these as changes from “Same Office Properties.”  For further discussion 
of the concept of “operational,” you should refer to the section of Note 2 of the consolidated financial statements entitled 
“Properties”;
office properties acquired during the two years being compared; 
constructed office properties placed into service that were not 100% operational throughout the two years being compared; 
office properties held for sale as of December 31, 2012;
office properties in the Greater Philadelphia region.  In September 2012, we shortened the holding period for these 
properties because they no longer meet our strategic investment criteria; and
property dispositions.

You may refer to Note 17 of the consolidated financial statements for a summary of operating properties that were either 
disposed or classified as held for sale and therefore are included in discontinued operations.

In addition to owning properties, we provide construction management and other services. The primary manner in which 

we evaluate the operating performance of our construction management and other service activities is through a measure we 
define as NOI from service operations, which is based on the net of the revenues and expenses from these activities.  The
revenues and expenses from these activities consist primarily of subcontracted costs that are reimbursed to us by customers 
along with a management fee.  The operating margins from these activities are small relative to the revenue.  We believe NOI 
from service operations is a useful measure in assessing both our level of activity and our profitability in conducting such 
operations.

We believe that operating income, as reported on our consolidated statements of operations, is the most directly 

comparable generally accepted accounting principles (“GAAP”) measure for both NOI from real estate operations and NOI 
from service operations.  Since both of these measures exclude certain items includable in operating income, reliance on these 
measures has limitations; management compensates for these limitations by using the measures simply as supplemental 
measures that are considered alongside other GAAP and non-GAAP measures.

35

 
 
 
 
 
The table below reconciles NOI from real estate operations and NOI from service operations to operating income reported 

on our consolidated statement of operations:

NOI from real estate operations
NOI from service operations
NOI from discontinued operations
Depreciation and amortization associated with real

estate operations
Impairment losses
General, administrative and leasing expenses
Business development expenses and land carry costs
Operating income

2012

For the Years Ended December 31,
2010
2011
(in thousands)
$ 308,012
2,706
(41,913)

$ 288,959
2,373
(48,017)

$ 312,365
3,260
(25,355)

(113,480)
(43,214)
(31,900)
(5,711)
95,965

$

(113,111)
(83,478)
(30,314)
(6,122)
35,780

$

(97,897)
—
(28,501)
(6,403)
$ 110,514

Comparison of the Year Ended December 31, 2012 to the Year Ended December 31, 2011

2012

For the Years Ended December 31,
2011
(in thousands)

Variance

Revenues

Revenues from real estate operations
Construction contract and other service revenues

Total revenues

Expenses

Property operating expenses
Depreciation and amortization associated with real estate operations
Construction contract and other service expenses
Impairment losses
General, administrative and leasing expenses
Business development expenses and land carry costs

Total operating expenses

Operating income
Interest expense
Interest and other income
Loss on early extinguishment of debt
Equity in loss of unconsolidated entities
Income tax (expense) benefit
Loss on interest rate derivatives
Income (loss) from continuing operations
Discontinued operations
Gain on sales of real estate, net of income taxes
Net income (loss)
Net loss attributable to noncontrolling interests
Preferred share dividends
Issuance costs associated with redeemed preferred shares
Net loss attributable to COPT common shareholders

$

454,171
73,836
528,007

$

428,496
84,345
512,841

$

25,675
(10,509)
15,166

167,161
113,480
70,576
43,214
31,900
5,711
432,042
95,965
(94,624)
7,172
(943)
(546)
(381)
—
6,643
13,677
21
20,341
636
(20,844)
(1,827)
(1,694) $ (135,530) $

162,397
113,111
81,639
83,478
30,314
6,122
477,061
35,780
(98,222)
5,603
(1,639)
(331)
6,710
(29,805)
(81,904)
(48,404)
2,732
(127,576)
8,148
(16,102)
—

4,764
369
(11,063)
(40,264)
1,586
(411)
(45,019)
60,185
3,598
1,569
696
(215)
(7,091)
29,805
88,547
62,081
(2,711)
147,917
(7,512)
(4,742)
(1,827)
133,836

$

36

 
 
 
 
 
 
 
 
 
 
 
NOI from Real Estate Operations

Revenues

Same Office Properties
Constructed office properties placed in service
Acquired office properties
Properties held for sale
Greater Philadelphia properties

Dispositions
Other

Property operating expenses
Same Office Properties
Constructed office properties placed in service
Acquired office properties
Properties held for sale
Greater Philadelphia properties

Dispositions
Other

NOI from real estate operations

Same Office Properties
Constructed office properties placed in service
Acquired office properties
Properties held for sale
Greater Philadelphia properties

Dispositions
Other

Same Office Properties rent statistics

Average occupancy rate
Average straight-line rent per occupied square foot (1)

For the Years Ended December 31,
2011
(Dollars in thousands, except per square foot data)

Variance

2012

$

$

$

414,275
16,237
6,574
19,529
9,698
19,957
6,830
493,100

151,932
4,040
1,450
6,671
2,562
9,057
5,023
180,735

262,343
12,197
5,124
12,858
7,136
10,900
1,807
312,365

88.6%

23.57

$

$

$

404,617
8,593
1,368
18,584
7,458
50,149
5,063
495,832

150,198
1,791
227
6,292
1,402
24,448
3,462
187,820

254,419
6,802
1,141
12,292
6,056
25,701
1,601
308,012

89.1%
23.35

$

$

$

9,658
7,644
5,206
945
2,240
(30,192)
1,767
(2,732)

1,734
2,249
1,223
379
1,160
(15,391)
1,561
(7,085)

7,924
5,395
3,983
566
1,080
(14,801)
206
4,353

-0.5%
0.22

(1)  Includes minimum base rents, net of abatements, and lease incentives on a straight-line basis for the years set forth above.

The increase in revenues from our Same Office Properties was attributable to a $4.5 million increase in rental revenue 
(including $967,000 in connection with lease terminations) and a $5.2 million increase in tenant recoveries and other real estate 
operations revenue (most of which pertained to an increase in directly reimbursable expenses). The increase in property 
operating expenses from our Same Office Properties was primarily due to increases in expenses directly reimbursable from 
tenants, offset in part by decreases in snow removal and utility expenses resulting from a milder winter and spring in the Mid-
Atlantic region. 

Our Same Office Properties pool for purposes of comparing 2012 and 2011 consisted of 177 office properties, comprising 
84.0% of our operating office square footage as of December 31, 2012. This pool of properties included the following changes 
from the pool used for purposes of comparing 2011 and 2010: the addition of four properties acquired and fully operational by 
January 1, 2011; and five properties placed in service and 100% operational by January 1, 2011.  Operating office properties 
disposed, held for sale or otherwise no longer held for long-term investment (currently our Greater Philadelphia properties) by 
December 31, 2012 were also excluded from all presented Same Office Property pools.

37

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
NOI from Service Operations

Construction contract and other service revenues
Construction contract and other service expenses
NOI from service operations

Variance

 For the Years Ended December 31,
2011
2012
(in thousands)
$ 84,345
81,639
2,706

$ (10,509)
(11,063)
554

$ 73,836
70,576
3,260

$

$

$

Construction contract and other service revenue and expenses decreased due primarily to a lower volume of construction 

activity in connection with one large construction contract that was nearing completion.  Construction contract activity is 
inherently subject to significant variability depending on the volume and nature of projects undertaken by us (primarily on 
behalf of tenants).  Service operations are an ancillary component of our overall operations that should contribute little 
operating income relative to our real estate operations. 

Impairment Losses

We recognized the impairment losses described below in the current and prior years:

•

•

•

•

•

in September 2012, our Board of Trustees approved a plan by Management to shorten the holding period for all of our 
office properties and developable land in Greater Philadelphia, Pennsylvania because the properties no longer meet our 
strategic investment criteria. We determined that the carrying amounts of these properties will not likely be recovered 
from the cash flows from the operations and sales of such properties over the likely remaining holding period.
Accordingly, in 2012, we recognized aggregate non-cash impairment losses of $46.1 million for the amounts by which the 
carrying values of the properties exceeded their respective estimated fair values;
in connection primarily with the Strategic Reallocation Plan, we determined that the carrying amounts of certain properties 
identified for disposition (the “Impaired Properties”) will not likely be recovered from the cash flows from the operations 
and sales of such properties over the shorter holding periods.  Accordingly, we recognized aggregate impairment losses for 
the amounts by which the carrying values of the Impaired Properties exceeded their respective estimated fair values, plus 
any exit costs incurred, of: $19.0 million in 2012 ($23.7 million classified as discontinued operations and including $4.2
million in exit costs); and $122.5 million in 2011 ($67.5 million classified as discontinued operations and excluding $4.8
million in related income tax benefit);
in connection with construction costs incurred on a property held for future development, we recognized an impairment 
loss of $1.9 million in 2012; 
on February 15 and 17, 2011, the United States Army (the “Army”) provided us disclosures regarding the past testing and 
use of tactical defoliants/herbicides at a property we owned, and subsequently disposed of, in Cascade, Maryland that was 
formerly an Army base known as Fort Ritchie (“Fort Ritchie”).  Upon receipt of these disclosures, we commenced a 
review of our development plans and prospects for the property.  We believed that these disclosures by the Army were 
likely to cause further delays in the resolution of certain litigation related to the property, and that they also increased the 
level of uncertainty as to our ultimate development rights at the property and future residential and commercial demand for 
the property.  We analyzed various possible outcomes and resulting cash flows expected from the operations and ultimate 
disposition of the property.  After determining that the carrying amount of the property was not likely to be recovered from 
those cash flows, we recognized a non-cash impairment loss of $27.7 million in March 2011 for the amount by which the 
carrying value of the property exceeded its estimated fair value; and
$803,000 on goodwill associated with operating properties in 2011.

The table below sets forth impairment losses (recoveries) recognized by property classification:

Operating properties
Non-operating properties
Total

For the Years Ended
December 31,

2012

2011

(in thousands)

$

$

70,263
(3,353)
66,910

$

$

70,512
80,509
151,021

38

 
 
 
 
The timely disposition of assets that no longer meet our strategic objectives is a key component of our strategy.  Our 
identification of additional properties for disposition in future periods could result in our recognition of additional impairment 
losses in such periods.

General, Administrative and Leasing Expenses

In 2012, we incurred additional expenses in connection with certain staffing reductions made to adjust the size of the 
organization due in large part to our property dispositions.  In 2011, certain of our executives voluntarily cancelled performance 
share units (“PSUs”) that were originally granted to them in 2010; we recognized a non-cash compensation charge of $1.2 
million in 2011 in connection with these PSU cancellations, most of which was included in general, administrative and leasing 
expenses, and we will have no further compensation charges in the future in connection with the cancelled PSUs.

We capitalize compensation and indirect costs associated with properties, or portions thereof, undergoing construction, 
development and redevelopment activities, and also capitalize such costs associated with internal-use software development.
We also capitalize compensation costs associated with obtaining new tenant leases or extending existing tenants.  Capitalized 
compensation and indirect costs were as follows:

 For the Years Ended December 31,

2012

2011

Construction, development, redevelopment, capital and tenant improvements
Leasing
Total

$

$

$

(in thousands)
7,976
1,151
9,127

$

10,394
1,259
11,653

The decrease in capitalized compensation and indirect costs from 2011 to 2012 was attributable in large part to a lower level of 
construction and development activity.

Interest Expense

The table below sets forth the components of our interest expense included in continuing operations:

Interest on mortgage and other secured loans
Interest on unsecured term loans
Interest on Exchangeable Senior Notes
Interest on Revolving Credit Facility
Interest expense recognized on interest rate swaps
Amortization of deferred financing costs
Other interest
Interest expense reclassified to discontinued operations
Capitalized interest
Total

$

$

Variance

 For the Years Ended December 31,
2011
2012
(in thousands)
75,760
$
2,914
20,267
10,158
4,600
6,596
1,406
(6,079)
(17,400)
98,222

63,124
14,728
13,851
6,274
3,697
6,243
2,784
(2,174)
(13,903)
94,624

$ (12,636)
11,814
(6,416)
(3,884)
(903)
(353)
1,378
3,905
3,497
(3,598)

$

$

The decrease in interest expense included the effect of a $132.8 million decrease in our average outstanding debt resulting 
primarily from our repayments of debt using proceeds from property dispositions and equity issuances.  Capitalized interest 
decreased from 2011 to 2012 due primarily to a decrease in the average costs associated with active construction projects 
resulting from projects being completed and our being slower to start new projects prior to definitive leasing being in place.

Loss on Interest Rate Swaps

On April 5, 2011, we entered into two forward starting LIBOR swaps for an aggregate notional amount of $175 million 

designated as cash flow hedges of interest payments on ten-year, fixed-rate borrowings forecasted to occur between 
August 2011 and April 2012.  After meeting with our Board of Trustees on December 21, 2011, we determined that we would 
pursue other financing options and concluded that the originally forecasted borrowings were expected not to occur. 
Accordingly, the swaps no longer qualified for hedge accounting and we recognized an aggregate loss of $29.8 million on these 
interest rate swaps in December 2011, most of which was reclassified from accumulated other comprehensive losses at the time 

39

the swaps entered into on April 5, 2011 no longer qualified for hedge accounting.  On January 5, 2012, we cash settled all of the 
forward starting swaps entered into on April 5, 2011 and December 22, 2011 for an aggregate of $29.7 million using 
borrowings from our Revolving Credit Facility.

Discontinued Operations

The increase in discontinued operations from 2011 to 2012 was due primarily to a $43.8 million decrease in impairment 
losses and a $16.1 million increase in gain on sales in the current period primarily in connection with the Strategic Reallocation 
Plan.

Income Tax (Expense) Benefit 

The income tax benefit in 2011 was due primarily to a $4.8 million benefit on impairment losses recognized by our taxable 

REIT subsidiary in connection with the Strategic Reallocation Plan, most of which was recognized in the three months ended 
June 30, 2011.

Preferred Share Dividends

The increase in preferred share dividends was due to dividends on the newly issued Series L Preferred Shares, partially 

offset by the decrease in dividends attributable to the Series G Preferred Shares redeemed on August 2012.

Issuance Costs Associated With Redeemed Preferred Shares

In 2012, we recognized a $1.8 million decrease to net income available to common shareholders pertaining to the original 

issuance costs incurred on the Series G Preferred Shares that were redeemed.

Net Loss Attributable to Noncontrolling Interests

Interests in our Operating Partnership are in the form of preferred and common units. The line entitled net loss attributable 
to noncontrolling interests includes primarily loss or income allocated to preferred and common units not owned by us.  Income 
is allocated to noncontrolling preferred unitholders in an amount equal to the priority return from the Operating Partnership to 
which they are entitled.  Income and losses are allocated to noncontrolling common unitholders based on income earned by the 
Operating Partnership, after allocation to preferred unitholders, multiplied by the percentage of the common units in the 
Operating Partnership owned by those common unitholders.

The net loss attributable to noncontrolling interests changed due primarily to the increase in net income available to 
allocate to noncontrolling holders of common units in the Operating Partnership primarily resulting from the reasons set forth 
above.

40

 
Comparison of the Year Ended December 31, 2011 to the Year Ended December 31, 2010

2011

For the Years Ended December 31,
2010
(in thousands)

Variance

Revenues

Revenues from real estate operations
Construction contract and other service revenues

Total revenues

Expenses

Property operating expenses
Depreciation and amortization associated with real estate operations
Construction contract and other service expenses
Impairment losses
General, administrative and leasing expense
Business development expenses and land carry costs

Total operating expenses

Operating income
Interest expense
Interest and other income
Loss on interest rate derivatives
Loss on early extinguishment of debt
Equity in (loss) income of unconsolidated entities
Income tax benefit (expense)
(Loss) income from continuing operations
Discontinued operations
Gain on sales of real estate, net of income taxes
Net (loss) income
Net loss (income) attributable to noncontrolling interests
Preferred share dividends
Net (loss) income attributable to COPT common shareholders

$

428,496
84,345
512,841

$

387,559
104,675
492,234

$

40,937
(20,330)
20,607

162,397
113,111
81,639
83,478
30,314
6,122
477,061
35,780
(98,222)
5,603
(29,805)
(1,639)
(331)
6,710
(81,904)
(48,404)
2,732
(127,576)
8,148
(16,102)
$ (135,530) $

146,617
97,897
102,302
—
28,501
6,403
381,720
110,514
(95,729)
9,568
—
—
1,376
(108)
25,621
17,054
2,829
45,504
(2,744)
(16,102)
26,658

15,780
15,214
(20,663)
83,478
1,813
(281)
95,341
(74,734)
(2,493)
(3,965)
(29,805)
(1,639)
(1,707)
6,818
(107,525)
(65,458)
(97)
(173,080)
10,892
—
$ (162,188)

41

 
 
 
 
 
 
 
 
NOI from Real Estate Operations

Revenues

Same Office Properties
Constructed office properties placed in service
Acquired office properties
Properties held for sale
Greater Philadelphia properties
Dispositions
Other

Property operating expenses
Same Office Properties
Constructed office properties placed in service
Acquired office properties
Properties held for sale
Greater Philadelphia properties
Dispositions
Other

NOI from real estate operations

Same Office Properties
Constructed office properties placed in service
Acquired office properties
Properties held for sale
Greater Philadelphia properties
Dispositions
Other

Same Office Properties rent statistics

Average occupancy rate
Average straight-line rent per occupied square foot (1)

For the Years Ended December 31,
2010
(Dollars in thousands, except per square foot data)

Variance

2011

$

$

$

362,237
27,048
25,293
18,584
7,458
50,149
5,063
495,832

137,286
5,705
9,225
6,292
1,402
24,448
3,462
187,820

224,951
21,343
16,068
12,292
6,056
25,701
1,601
308,012

88.6%

22.50

$

$

$

362,853
8,789
7,315
18,704
6,299
56,706
1,062
461,728

132,768
1,993
2,317
5,831
2,131
25,974
1,755
172,769

230,085
6,796
4,998
12,873
4,168
30,732
(693)
288,959

90.2%

22.26

$

$

$

(616)
18,259
17,978
(120)
1,159
(6,557)
4,001
34,104

4,518
3,712
6,908
461
(729)
(1,526)
1,707
15,051

(5,134)
14,547
11,070
(581)
1,888
(5,031)
2,294
19,053

(1.6)%
0.24

(1)  Includes minimum base rents, net of abatements, and lease incentives on a straight-line basis for the nine month periods set forth above.

As the table above indicates, our increase in NOI from real estate operations was attributable to the additions of properties 

through construction and acquisition activities. 

Our Same Office Properties for purposes of comparing 2011 and 2010 consisted of 168 office properties, comprising 

70.8% of our operating office square footage as of December 31, 2011. With regard to changes in NOI from real estate 
operations attributable to Same Office Properties:

•

•

•
•

•

the decrease in revenues included the following:
•

a $2.3 million decrease in rental revenue attributable primarily to changes in occupancy and rental rates between the 
two years; and
a $1.5 million decrease in net revenue from the early termination of leases; offset in part by
a $3.2 million increase in tenant recoveries and other revenue due primarily to the increase in property operating 
expenses described below.

the increase in property operating expenses included the following:
•

a $1.9 million increase in costs for asset and property management labor, much of which was due to an increase in the 
size of our employee base supporting certain properties;
a $1.7 million increase in interior and other repairs and maintenance;

42

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
•

•

•

a $1.5 million increase in heating and air conditioning repairs and maintenance that was predominantly attributable to 
an increase in heating and air conditioning systems utilization at a property in San Antonio; and
a $1.0 million increase in cleaning services and related supplies due in large part to increased contract rates and 
increased space usage of leased space at certain properties; offset in part by
a $3.5 million decrease in snow removal expenses due primarily to record snowfall in Maryland and Northern Virginia
in 2010.

NOI from Service Operations

Construction contract and other service revenues
Construction contract and other service expenses
NOI from service operations

Variance

 For the Years Ended December 31,
2010
2011
(in thousands)
$ 104,675
102,302
2,373

$ (20,330)
(20,663)
333

$ 84,345
81,639
2,706

$

$

$

As evidenced in the changes set forth above, construction contract and other service revenue and expenses decreased due 

primarily to a lower volume of construction activity in connection with one large construction contract that was nearing 
completion, although the change in NOI from service operations was not significant.

Depreciation and Amortization Associated with Real Estate Operations

Depreciation and amortization expense associated with real estate included in continuing operations increased due 

primarily to expense attributable to properties added into operations through construction and acquisition activities.

General, Administrative and Leasing Expenses

As described above, we recognized a non-cash compensation charge of $1.2 million in 2011 in connection with voluntary 

executive PSU cancellations, most of which was included in general, administrative and leasing expenses.

Capitalized compensation and indirect costs were as follows:

Construction, development, redevelopment, capital and tenant improvements
Leasing
Internal-use software development
Total

$

$

10,394
1,259
—
11,653

$

$

9,684
1,222
126
11,032

 For the Years Ended December 31,

2011

2010

(in thousands)

Impairment Losses

We recognized impairment losses in 2011, as described above.

43

 
Interest Expense

The table below sets forth the components of our interest expense included in continuing operations:

Interest on mortgage and other secured loans
Interest on Exchangeable Senior Notes
Interest on Revolving Credit Facility
Interest expense recognized on interest rate swaps
Interest on unsecured term loans
Amortization of deferred financing costs
Other interest
Interest expense reclassified to discontinued operations
Capitalized interest
Total

 For the Years Ended December 31,

2011

2010

Variance

$ 75,760
20,267
10,158
4,600
2,914
6,596
1,406
(6,079)
(17,400)
$ 98,222

(in thousands)
$ 82,635
19,348
5,923
3,689
—
5,871
1,186
(6,399)
(16,524)
$ 95,729

$ (6,875)
919
4,235
911
2,914
725
220
320
(876)
2,493

$

The increase in interest expense included the effect of a $181.4 million increase in our average outstanding debt resulting 
primarily from our financing of acquisition and construction activities. The table above reflects the effects of our repayments 
of secured debt and our maintaining a higher weighted average borrowing level on the Revolving Credit Facility in 2011.

Loss on Interest Rate Swaps

As described above, we recognized an aggregate loss of $29.8 million on certain forward starting interest rate swaps in 

December 2011, most of which was reclassified from accumulated other comprehensive losses.

Interest and Other Income

The decrease in interest and other income was due primarily to a decrease in gain recognized on our investment in 
common stock of The KEYW Holding Corporation (“KEYW”), an entity supporting the intelligence community's operations 
and transformation to Cyber Age mission by providing engineering services and integrated platforms that support the 
intelligence process.  We used the equity method of accounting for our investment in KEYW common stock until the 
resignation of our Chief Executive Officer from the Board of Directors of KEYW effective July 1, 2011, at which time we 
began accounting for our investment in KEYW's common stock as a trading marketable equity security to be reported at fair 
value, with unrealized gains and losses recognized through earnings.  Most of the decrease in gain was attributable to additional 
equity issued by KEYW in connection with its initial public offering of common stock in 2010; no similar event occurred in 
2011.

Income Tax Benefit (Expense)

As described above, the income tax benefit in 2011 was due primarily to impairment losses recognized by our taxable 

REIT subsidiary in connection with the Strategic Reallocation Plan.

Discontinued Operations

The decrease in discontinued operations was due primarily to $67.5 million in impairment losses recognized in connection 

with the Strategic Reallocation Plan described above.

Net Loss (Income) Attributable to Noncontrolling Interests

The net loss (income) attributable to noncontrolling interests changed due primarily to the decrease in net income available 

to allocate to noncontrolling holders of common units in the Operating Partnership primarily resulting from the reasons set 
forth above.

44

Adjusted Earnings Before Interest, Taxes, Depreciation and Amortization (“Adjusted EBITDA”) Interest Coverage Ratio and 
Adjusted EBITDA Fixed Charge Coverage Ratio

Adjusted EBITDA is net (loss) income adjusted for the effects of interest expense, depreciation and amortization, 

impairment losses, gain on sales of properties, gain or loss on early extinguishment of debt, net gain on unconsolidated entities, 
operating property acquisition costs, loss on interest rate derivatives and income taxes. We believe that Adjusted EBITDA is a 
useful supplemental measure for assessing our un-levered performance. We believe that net (loss) income, as reported on our 
consolidated statements of operations, is the most directly comparable GAAP measure to Adjusted EBITDA. Adjusted
EBITDA excludes items that are included in net income, including some that require cash outlays; we compensate for this 
limitation by using the measure simply as a supplemental measure that is considered alongside other GAAP and non-GAAP
measures.  It should not be used as an alternative to net income when evaluating our financial performance or to cash flow from 
operating, investing and financing activities when evaluating our liquidity or ability to make cash distributions or pay debt 
service.

We use Adjusted EBITDA to calculate Adjusted EBITDA Interest Coverage Ratio and Adjusted EBITDA Fixed Charge

Coverage Ratio. We calculate Adjusted EBITDA interest coverage by dividing Adjusted EBITDA by interest expense on 
continuing and discontinued operations (excluding amortization of deferred financing costs and amortization of debt discounts 
and premiums, net of amounts capitalized). We calculate Adjusted EBITDA fixed charge coverage ratio by dividing Adjusted
EBITDA by the sum of: (1) interest expense on continuing and discontinued operations (excluding amortization of deferred 
financing costs and amortization of debt discounts and premiums, net of amounts capitalized); (2) dividends on preferred 
shares; and (3) distributions on preferred units in the Operating Partnership not owned by us.

The tables below set forth the computation of our Adjusted EBITDA interest and fixed charge coverage ratios and 

reconciliations of Adjusted EBITDA to net income reported on our consolidated statements of operations:

Net income (loss)
Interest expense (1)
Income tax expense (benefit) (2)
Depreciation and amortization (1)
Impairment losses (1)
(Gain) loss on early extinguishment of debt (1)
Gain on sales of operating properties
Non-operating property sales
Net gain on investments in unconsolidated entities included in interest and other 

income

Operating property acquisition costs
Loss on interest rate swaps
Adjusted EBITDA

Interest expense (1)
Less: Amortization of deferred financing costs
Less: Amortization of net debt discounts and premiums, net of amounts capitalized
Denominator for Adjusted EBITDA interest coverage ratio
Preferred share dividends
Preferred distributions
Denominator for Adjusted EBITDA fixed charge coverage ratio

$

For the Years Ended December 31,
2010
2011
2012
(Dollars in thousands)

20,341
96,798
381
124,418
66,910
(793)
(20,928)
(33)

$ (127,576) $ 45,504
102,128
119
125,819
—
—
(1,077)
(2,840)

104,301
(6,710)
136,594
151,021
2,023
(4,811)
(2,717)

(3,589)
229
—
$ 283,734

(1,820)
156
29,805
$ 280,266

(6,408)
3,424
—
$ 266,669

$

96,798
(6,243)
(2,721)
87,834
20,844
660
$ 109,338

$

$ 104,301
(6,596)
(4,680)
93,025
16,102
660
$ 109,787

$

$ 102,128
(5,871)
(4,974)
$ 91,283
16,102
660
$ 108,045

Adjusted EBITDA interest coverage ratio
Adjusted EBITDA fixed charge coverage ratio

3.23x
2.60x

3.01x
2.55x

2.92x
2.47x

(1) Includes amounts included in continuing operations and discontinued operations.
(2) Includes income taxes on continuing operations and gains on sales of real estate.

45

Funds from Operations

Funds from operations (“FFO”) is defined as net (loss) income computed using GAAP, excluding gains on sales of, and 
impairment losses on, previously depreciated operating properties, plus real estate-related depreciation and amortization. When
multiple properties consisting of both operating and non-operating properties exist on a single tax parcel, we classify all of the 
gains on sales of, and impairment losses on, the tax parcel as all being for previously depreciated operating properties when 
most of the value of the parcel is associated with operating properties on the parcel. We believe that we use the National 
Association of Real Estate Investment Trusts (“NAREIT”) definition of FFO, although others may interpret the definition 
differently and, accordingly, our presentation of FFO may differ from those of other REITs.  We believe that FFO is useful to 
management and investors as a supplemental measure of operating performance because, by excluding gains related to sales of, 
and impairment losses on, previously depreciated operating properties, net of related tax benefit, and excluding real estate-
related depreciation and amortization, FFO can help one compare our operating performance between periods.  In addition, 
since most equity REITs provide FFO information to the investment community, we believe that FFO is useful to investors as a 
supplemental measure for comparing our results to those of other equity REITs.  We believe that net income is the most directly 
comparable GAAP measure to FFO.

Since FFO excludes certain items includable in net income, reliance on the measure has limitations; management 

compensates for these limitations by using the measure simply as a supplemental measure that is weighed in the balance with 
other GAAP and non-GAAP measures. FFO is not necessarily an indication of our cash flow available to fund cash needs.  
Additionally, it should not be used as an alternative to net income when evaluating our financial performance or to cash flow 
from operating, investing and financing activities when evaluating our liquidity or ability to make cash distributions or pay debt 
service.

Basic FFO available to common share and common unit holders (“Basic FFO”) is FFO adjusted to subtract (1) preferred 

share dividends, (2) issuance costs associated with redeemed preferred shares, (3) income attributable to noncontrolling 
interests through ownership of preferred units in the Operating Partnership or interests in other consolidated entities not owned 
by us, (4) depreciation and amortization allocable to noncontrolling interests in other consolidated entities and (5) Basic FFO 
allocable to restricted shares.  With these adjustments, Basic FFO represents FFO available to common shareholders and 
common unitholders.  Common units in the Operating Partnership are substantially similar to our common shares and are 
exchangeable into common shares, subject to certain conditions.  We believe that Basic FFO is useful to investors due to the 
close correlation of common units to common shares.  We believe that net income is the most directly comparable GAAP
measure to Basic FFO.  Basic FFO has essentially the same limitations as FFO; management compensates for these limitations 
in essentially the same manner as described above for FFO.

Diluted FFO available to common share and common unit holders (“Diluted FFO”) is Basic FFO adjusted to add back any 

changes in Basic FFO that would result from the assumed conversion of securities that are convertible or exchangeable into 
common shares.  We believe that Diluted FFO is useful to investors because it is the numerator used to compute Diluted FFO 
per share, discussed below.  We believe that the numerator for diluted EPS is the most directly comparable GAAP measure to 
Diluted FFO.  Since Diluted FFO excludes certain items includable in the numerator to diluted EPS, reliance on the measure 
has limitations; management compensates for these limitations by using the measure simply as a supplemental measure that is 
weighed in the balance with other GAAP and non-GAAP measures.  Diluted FFO is not necessarily an indication of our cash 
flow available to fund cash needs.  Additionally, it should not be used as an alternative to net income when evaluating our 
financial performance or to cash flow from operating, investing and financing activities when evaluating our liquidity or ability 
to make cash distributions or pay debt service.

Diluted FFO, as adjusted for comparability is defined as Diluted FFO adjusted to exclude operating property acquisition 

costs, gains on sales of, and impairment losses on, properties other than previously depreciated operating properties, net of 
associated income tax, gain or loss on early extinguishment of debt, loss on interest rate swaps and issuance costs associated 
with redeemed preferred shares.  We believe that the excluded items are not reflective of normal operations and, as a result, we 
believe that a measure that excludes these items is a useful supplemental measure in evaluating our operating performance.  We
believe that the numerator to diluted EPS is the most directly comparable GAAP measure to this non-GAAP measure.  This
measure has essentially the same limitations as Diluted FFO, as well as the further limitation of not reflecting the effects of the 
excluded items; we compensate for these limitations in essentially the same manner as described above for Diluted FFO.

Diluted FFO per share is (1) Diluted FFO divided by (2) the sum of the (a) weighted average common shares outstanding 
during a period, (b) weighted average common units outstanding during a period and (c) weighted average number of potential 
additional common shares that would have been outstanding during a period if other securities that are convertible or 
exchangeable into common shares were converted or exchanged.  We believe that Diluted FFO per share is useful to investors 
because it provides investors with a further context for evaluating our FFO results in the same manner that investors use 

46

 
 
 
 
 
 
earnings per share (“EPS”) in evaluating net income available to common shareholders.  In addition, since most equity REITs
provide Diluted FFO per share information to the investment community, we believe that Diluted FFO per share is a useful 
supplemental measure for comparing us to other equity REITs. We believe that diluted EPS is the most directly comparable 
GAAP measure to Diluted FFO per share. Diluted FFO per share has most of the same limitations as Diluted FFO (described 
above); management compensates for these limitations in essentially the same manner as described above for Diluted FFO.

Diluted FFO per share, as adjusted for comparability is (1) Diluted FFO, as adjusted for comparability divided by (2) the 
sum of the (a) weighted average common shares outstanding during a period, (b) weighted average common units outstanding 
during a period and (c) weighted average number of potential additional common shares that would have been outstanding 
during a period if other securities that are convertible or exchangeable into common shares were converted or exchanged.  We
believe that this measure is useful to investors because it provides investors with a further context for evaluating our FFO 
results.  We believe that diluted EPS is the most directly comparable GAAP measure to this per share measure.  This measure 
has most of the same limitations as Diluted FFO (described above) as well as the further limitation of not reflecting the effects
of the excluded items; we compensate for these limitations in essentially the same manner as described above for Diluted FFO.

The computations for all of the above measures on a diluted basis assume the conversion of common units in our 
Operating Partnership but do not assume the conversion of other securities that are convertible into common shares if the 
conversion of those securities would increase per share measures in a given period.

We use measures called payout ratios as supplemental measures of our ability to make distributions to investors based on 
each of the following: FFO; Diluted FFO; and Diluted FFO, adjusted for comparability. These measures are defined as (1) the 
sum of (a) dividends on common shares and (b) distributions to holders of interests in the Operating Partnership and dividends 
on convertible preferred shares when such distributions and dividends are included in Diluted FFO divided by either (2) FFO, 
Diluted FFO or Diluted FFO, adjusted for comparability.

47

 
 
The tables appearing below and on the following page sets forth the computation of the above stated measures for the years 

ended December 31, 2008 through 2012 and provides reconciliations to the GAAP measures associated with such measures: 

Net income (loss)
Add: Real estate-related depreciation and amortization
Add: Depreciation and amortization on unconsolidated real estate 

entities allocable to COPT (1)

Add: Impairment losses on previously depreciated operating

properties

Less: Gain on sales of previously depreciated operating properties,

net of income taxes

FFO
Less: Noncontrolling interests-preferred units in the Operating

Partnership

Less: FFO allocable to other noncontrolling interests
Less: Preferred share dividends
Less: Issuance costs associated with redeemed preferred shares
Basic and Diluted FFO allocable to restricted shares
Basic and Diluted FFO
Operating property acquisition costs
Gain on sales of non-operating properties, net of income taxes
Impairment (recoveries) losses on other properties
Income tax expense on impairment recoveries (losses) on other

properties

Loss on interest rate derivatives
(Gain) loss on early extinguishment of debt
Issuance costs associated with redeemed preferred shares
Diluted FFO, as adjusted for comparability

Weighted average common shares
Conversion of weighted average common units
Weighted average common shares/units - Basic FFO
Dilutive effect of share-based compensation awards
Weighted average common shares/units - Diluted FFO

For the Years Ended December 31,
2009
2010
2011
(Dollars and shares in thousands, except per share data)
$ 45,504
123,243

$(127,576)
134,131

$ 61,299
109,386

$ 61,316
102,772

2008

2012

$ 20,341
121,937

346

492

70,263

70,512

631

—

640

—

648

—

(20,928)
191,959

(4,811)
72,748

(1,077)
168,301

—
171,325

(2,630)
162,106

(660)
(1,989)
(20,844)
(1,827)
(919)
$ 165,720
229
(33)
(3,353)

673
—
(793)
1,827
$ 164,270

73,454
4,235
77,689
53
77,742

(660)
(1,887)
(16,102)
—
(1,037)
$ 53,062
156
(2,717)
80,509

(4,775)
29,805
2,023
—
$ 158,063

69,382
4,355
73,737
111
73,848

(660)
(1,370)
(16,102)
—
(1,524)
$ 148,645
3,424
(2,829)
—

(660)
(308)
(16,102)
—
(1,629)
$ 152,626
1,967
—
—

—
—

—
—

—
$ 149,240

—
$ 154,593

59,611
4,608
64,219
333
64,552

55,930
5,717
61,647
477
62,124

(660)
(442)
(16,102)
—
(1,310)
$ 143,592
—
(988)
—

—
—
(8,026)
—
$ 134,578

48,132
8,107
56,239
688
56,927

Diluted FFO per share
Diluted FFO per share, as adjusted for comparability

$

$

2.13

2.11

$

$

0.72

2.14

$

$

2.30

2.31

$

$

2.46

2.49

$

$

2.52

2.36

48

 
 
Numerator for diluted EPS
Add: Income allocable to noncontrolling interests-common units in

$

the Operating Partnership

Add: Real estate-related depreciation and amortization

Add: Depreciation and amortization of unconsolidated real estate

entities

Add: Impairment losses on previously depreciated operating

properties

Add: Numerator for diluted EPS allocable to restricted shares

Less: Depreciation and amortization allocable to noncontrolling

interests in other consolidated entities

Less: Decrease in noncontrolling interests unrelated to earnings
Less: Basic and diluted FFO allocable to restricted shares
Less: Gain on sales of previously depreciated operating properties,

net of income taxes

Basic and Diluted FFO
Operating property acquisition costs
Gain on sales of non-operating properties, net of income taxes
Impairment (recoveries) losses on other properties
Income tax expense (benefit) on impairment (recoveries) losses on 

other properties

Loss on interest rate derivatives
(Gain) loss on early extinguishment of debt
Issuance costs associated with redeemed preferred shares
Diluted FFO, as adjusted for comparability

2012

For the Years Ended December 31,
2009
2010
2011
(Dollars and shares in thousands, except per share data)
$ 25,587

$(136,567)

$ 39,217

(2,163)

2008

$ 37,135

(87)

(8,439)

121,937
346

134,131
492

2,116

123,243
631

4,495

109,386
640

6,519

102,772
648

70,263

469

(633)
(2,565)
(919)

(20,928)
$ 165,720
229
(33)
(3,353)

673
—
(793)
1,827
$ 164,270

70,512

1,037

(849)
(1,407)
(1,037)

(4,811)
$ 53,062
156
(2,717)
80,509

(4,775)
29,805
2,023
—
$ 158,063

—

1,071

(1,402)
—
(1,524)

—

1,010

(493)
—
(1,629)

(1,077)
$ 148,645
3,424
(2,829)
—

—
$ 152,626
1,967
—
—

—
—

—
—

—
$ 149,240

—
$ 154,593

—

728

(270)
—
(1,310)

(2,630)
$ 143,592
—
(988)
—

—
—
(8,026)
—
$ 134,578

Denominator for diluted EPS
Weighted average common units
Anti-dilutive EPS effect of share-based compensation awards
Denominator for diluted FFO per share measures

73,454
4,235
53
77,742

69,382
4,355
111
73,848

59,944
4,608
—
64,552

56,407
5,717
—
62,124

48,820
8,107
—
56,927

Dividends on common shares
Common unit distributions
Numerator for diluted FFO payout ratio, adjusted for comparability
FFO payout ratio
Diluted FFO payout ratio
Diluted FFO payout ratio, as adjusted for comparability

$ 81,720
4,617
$ 86,337

$ 116,717
7,173
$ 123,890

$ 98,510
7,266
$ 105,776

$ 87,596
7,962
$ 95,558

$ 70,836
11,510
$ 82,346

45.0%
52.1%
52.6%

170.3%
233.5%
78.4%

62.8%
71.2%
70.9%

55.8%
62.6%
61.8%

50.8%
57.3%
61.2%

49

 
 
Property Additions

The table below sets forth the major components of our additions to properties for 2012 and 2011:

Construction, development and redevelopment (1)
Acquisition of operating properties (2)
Tenant improvements on operating properties (3)
Capital improvements on operating properties

Variance

For the Years Ended December 31,
2011
2012
(in thousands)
$ 240,360
26,887
47,147
16,572
$ 330,966

$ 165,523
33,684
22,068
26,827
$ 248,102

$ (74,837)
6,797
(25,079)
10,255
$ (82,864)

(1) The decrease from 2011 to 2012 was attributable in large part to a slowing in the pace of new construction projects started since we were less 

inclined to commence construction on projects prior to definitive leasing prospects being in place than we were historically.  Estimated remaining 
costs on existing construction projects totaled $134.7 million at December 31, 2012. We also have a significant pipeline of land, much of which we 
expect to use for the construction of new projects in the future, although the volume and pace of such new projects occurring will be dependent in 
large part on the leasing environment. 

(2) Excludes intangible assets and liabilities associated with such acquisition.  Our level of future acquisitions will be dependent largely on our ability 
to identify strategic acquisition opportunities that meet our return criteria and our having sufficient capital available to complete such acquisitions. 

(3) Tenant improvement costs incurred on newly-constructed properties are classified in this table as construction, development and redevelopment.

The decrease from 2011 to 2012 was due in large part to a decrease in leases executed on existing space in 2012 and 2011 including significant costs 
from leases executed in 2010. 

 Cash Flows

Net cash flow provided by operating activities increased $39.7 million from 2011 to 2012 due primarily to: an increase in 

cash flow received from real estate operations, which was affected by the timing of cash receipts; an increase in cash flow 
associated with the timing of cash flow from third-party construction projects; $19.0 million in proceeds in the current period 
from the sale of our KEYW common stock, including $5.1 million received from sales completed in 2011; and $17.3 million in 
previously accreted interest paid in the prior period in connection with our repurchase of exchangeable senior notes; offset in 
part by $29.7 million paid to cash settle interest rate swaps in the current period.

Net cash flow provided by investing activities increased $274.1 million from 2011 to 2012 due mostly to a $211.0 million
increase from sales of properties primarily in connection with the Strategic Reallocation Plan and lower levels of development 
spending.

Net cash flow used in financing activities in 2012 was $200.5 million and included the following:

•
•
•
•

•
•
•

net repayments of debt of $395.0 million;
proceeds from the issuance of common and preferred shares of $371.1 million;
payments to redeem the Series G Preferred Shares of $55.0 million; and
dividends and distributions of $114.1 million.

Net cash flow provided by financing activities in 2011 was $103.7 million and included the following:

net borrowings of $111.4 million;
proceeds from the issuance of common shares of $147.8 million; and
dividends and distributions of $138.6 million.

Liquidity and Capital Resources

Our primary cash requirements are for operating expenses, debt service, development of new properties, improvements to 

existing properties and acquisitions.  We expect to continue to use cash flow provided by operations as the primary source to 
meeting our short-term capital needs, including property operating expenses, general and administrative expenses, interest 
expense, scheduled principal amortization of debt, dividends to our shareholders, distributions to our noncontrolling interest 
holders of preferred and common units in the Operating Partnership and improvements to existing properties.  We believe that 
our liquidity and capital resources are adequate for our near-term and longer-term requirements without necessitating property 
sales.  However, we expect to generate cash by selling properties included in the Strategic Reallocation Plan through 2013.

50

 
 
 
 
 
 
 
 
We have historically relied on fixed-rate, non-recourse mortgage loans from banks and institutional lenders for long-term 
financing and to restore availability on our Revolving Credit Facility.  In recent years, we have relied more on unsecured bank 
loans and publicly issued, convertible unsecured debt for long-term financing.  We also periodically access the public equity 
markets to raise capital by issuing common and/or preferred shares.

We often use our Revolving Credit Facility to initially finance much of our investing activities.  We then pay down the 

facility using proceeds from long-term borrowings, equity issuances and property sales.  The lenders’ aggregate commitment 
under the facility is $800 million, with the ability for us to increase the lenders’ aggregate commitment to $1.3 billion, provided 
that there is no default under the facility and subject to the approval of the lenders. Amounts available under the facility are 
computed based on 60% of our unencumbered asset value, as defined in the agreement.  The Revolving Credit Facility matures 
on September 1, 2014, and may be extended by one year at our option, provided that there is no default under the facility and 
we pay an extension fee of 0.20% of the total availability of the facility.  As of December 31, 2012, the maximum borrowing 
capacity under this facility totaled $800.0 million, of which $792.3 million was available.

 We also have construction loan facilities that provide for aggregate borrowings of up to $123.8 million, $94.2 million of 

which was available at December 31, 2012 to fund future construction costs at specific projects.

The following table summarizes our contractual obligations as of December 31, 2012 (in thousands):

2013

2014

2015

2016

2017

Thereafter

Total

For the Years Ending December 31,

Contractual obligations (1)
Debt (2)

Balloon payments due upon maturity
Scheduled principal payments

Interest on debt (3)
New construction and redevelopment

obligations (4)(5)

Third-party construction and

development obligations (5)(6)
Capital expenditures for operating

properties (5)(7)
Operating leases (8)
Other purchase obligations (9)
Total contractual cash obligations

$ 111,289
9,840
83,414

$ 151,681
6,660
74,071

$ 790,254
5,548
57,850

$ 274,605
4,037
33,759

$ 550,610
778
7,436

$ 120,011
2,479
4,725

$ 1,998,450
29,342
261,255

54,937

10,000

46,180

2,430

—

—

—

—

—

—

—

—

64,937

48,610

16,497
1,177
3,150
$ 326,484

5,000
1,162
2,029
$ 253,033

—
1,040
1,088
$ 855,780

—
978
565
$ 313,944

—
975
5
$ 559,804

—
81,700
98
$ 209,013

21,497
87,032
6,935
$ 2,518,058

(1) The contractual obligations set forth in this table generally exclude property operations contracts that had a value of less than $20,000.  

Also excluded are contracts associated with the operations of our properties that may be terminated with notice of one month or less, 
which is the arrangement that applies to most of our property operations contracts.

(2) Represents scheduled principal amortization payments and maturities only and therefore excludes a net discount of $8.6 million. The

balloon payment maturities include $17.5 million in 2013 and $411.1 million in 2015 that may each be extended for one year, subject to 
certain conditions. We expect to refinance the remainder of the balloon payments that are due in 2013 and 2014 using primarily a 
combination of borrowings under our credit facilities and by accessing the unsecured debt market and/or secured debt market. 

(3) Represents interest costs for debt at December 31, 2012 for the terms of such debt.  For variable rate debt, the amounts reflected above 

used December 31, 2012 interest rates on variable rate debt in computing interest costs for the terms of such debt.

(4) Represents contractual obligations pertaining to new construction and redevelopment activities.  Construction and redevelopment 

activities underway or contractually committed at December 31, 2012 included the following:

Activity
Construction of new office properties
Redevelopment of existing office properties

Number of
Properties
11
2

Square Feet
(in thousands)
1,357
297

Estimated
Remaining Costs
(in millions)

$

134.7
19.3

Expected Year
For Costs to be
Incurred Through
2015
2014

(5) Due to the long-term nature of certain construction and development contracts and leases included in these lines, the amounts reported in 

the table represent our estimate of the timing for the related obligations being payable.

(6)   Represents contractual obligations pertaining to projects for which we are acting as construction manager on behalf of unrelated parties 

who are our clients.  We expect to be reimbursed in full for these costs by our clients.

(7) Represents contractual obligations pertaining to recurring and nonrecurring capital expenditures for our operating properties.  We expect 

to finance these costs primarily using cash flow from operations.

(8)  We expect to pay these items using cash flow from operations.
(9) Primarily represents contractual obligations pertaining to managed-energy service contracts in place for certain of our operating 

properties.  We expect to pay these items using cash flow from operations.

51

 
 
 
 
 
We expect to spend more than $170.0 million on construction and development costs and approximately $50.0 million on
improvements to operating properties (including the commitments set forth in the table above) in 2013.  We expect to fund the 
construction and development costs and our debt maturities in 2013 using primarily a combination of borrowings under our 
Revolving Credit Facility and existing construction loan facilities.  We expect to fund improvements to existing operating 
properties using cash flow from operations. 

Certain of our debt instruments require that we comply with a number of restrictive financial covenants, including 

maximum leverage ratio, unencumbered leverage ratio, minimum net worth, minimum fixed charge coverage, minimum 
unencumbered interest coverage ratio, minimum debt service and maximum secured indebtedness ratio.  As of December 31,
2012, we were in compliance with these financial covenants.

Off-Balance Sheet Arrangements

During 2012, we owned an investment in an unconsolidated real estate joint venture into which we entered in 2005 to 
enable us to contribute office properties that were previously wholly owned by us into the joint venture in order to partially 
dispose of our interest in the properties. We managed the real estate joint venture’s property operations and any required 
construction projects until January 1, 2013, at which time these responsibilities were assumed by a third party. This real estate 
joint venture has a two-member management committee that is responsible for making major decisions (as defined in the joint 
venture agreement) and we control one of the management committee positions.

We and our partner may receive returns in proportion to our investments in the joint venture. As part of our obligations 
under the joint venture arrangement, we entered into standard nonrecourse loan guarantees (environmental indemnifications 
and guarantees against fraud and misrepresentation, and springing guarantees of partnership debt in the event of a voluntary 
bankruptcy of the partnership). The maximum amount we could be required to pay under the guarantees is approximately $65 
million. We were entitled to recover 20% of any amounts paid under the guarantees from an affiliate of our partner pursuant to 
an indemnity agreement so long as we continued to manage the properties; in connection with the transition of our property 
management responsibilities to a third party effective January 1, 2013, the percentage that we are entitled to recover increased 
to 80%.  In October 2012, the holder of the mortgage debt encumbering all of the joint venture’s properties initiated foreclosure 
proceedings.  Management considered this event and estimates that the aggregate fair value of the guarantees would not exceed 
the amounts included in distributions received in excess of investment in unconsolidated real estate joint venture reported on 
the consolidated balance sheets.

While we historically accounted for our investment in this joint venture using the equity method, we discontinued our 
application of the equity method effective October 2012 due to our having neither the obligation nor intent to support the joint 
venture. We had distributions in excess of our investment in this unconsolidated real estate joint venture of $6.4 million as of 
December 31, 2012 due to the following: our deferral of gain in a prior period on our initial contribution of property to the joint 
venture due to our guarantees described above; and our subsequent recognition of losses under the equity method in excess of 
our investment due to such guarantees and our continued intent to support the joint venture prior to October 2012. We
recognized equity in the losses of this joint venture of $349,000 in 2012.

We had no other material off-balance sheet arrangements during 2012.

Inflation

Most of our tenants are obligated to pay their share of a building’s operating expenses to the extent such expenses exceed 

amounts established in their leases, based on historical expense levels.  Some of our tenants are obligated to pay their full share 
of a building’s operating expenses.  These arrangements somewhat reduce our exposure to increases in such costs resulting 
from inflation.

Recent Accounting Pronouncements

We adopted guidance issued by the Financial Accounting Standards Board (“FASB”) effective January 1, 2012 related to 

the presentation of comprehensive income that requires us to present the total of comprehensive income, the components of net 
income and the components of other comprehensive income either in a single continuous statement of comprehensive income 
or in two separate but consecutive statements.  We adopted this guidance using retrospective application.  This guidance 
eliminates the option to present the components of other comprehensive income as part of the statement of equity.  Our 
adoption of this guidance did not affect our financial position, results of operations, cash flows or measurement of 
comprehensive income but did change the location of our disclosure pertaining to comprehensive income in our consolidated 
financial statements.

52

 
 
 
 
We adopted guidance issued by the FASB effective January 1, 2012 that amends measurement and disclosure requirements 

related to fair value measurements to improve consistency with International Financial Reporting Standards.  In connection 
with our adoption of this guidance, we made an accounting policy election to use an exception provided for in the guidance 
with respect to measuring counterparty credit risk for derivative instruments; this election enables us to continue to measure the 
fair value of groups of assets and liabilities associated with derivative instruments consistently with how market participants 
would price the net risk exposure at the measurement date.  Our adoption of this guidance did not affect our financial position, 
results of operations or cash flows but did result in additional disclosure pertaining to our fair value measurements.

We adopted guidance issued by the FASB effective January 1, 2012 relating to the testing of goodwill for impairment that 
permits us to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit 
is less than its carrying amount as a basis for determining whether it is necessary to perform a quantitative impairment test.  
This guidance eliminates the requirement to calculate the fair value of a reporting unit unless the entity determines that it is 
more likely than not that its fair value is less than its carrying amount.  Our adoption of this guidance did not materially affect
our consolidated financial statements or disclosures.

Item 7A.           Quantitative and Qualitative Disclosures about Market Risk

We are exposed to certain market risks, the most predominant of which is change in interest rates.  Increases in interest 
rates can result in increased interest expense under our Revolving Credit Facility and other variable rate debt.  Increases in 
interest rates can also result in increased interest expense when our fixed rate debt matures and needs to be refinanced.

The following table sets forth as of December 31, 2012 our debt obligations and weighted average interest rates for fixed 

rate debt by expected maturity date (dollars in thousands):

2013

2014

2015

2016

2017

Thereafter

Total

For the Years Ending December 31,

Long term debt: (1)
Fixed rate debt (2)
Weighted average interest rate
Variable rate debt

$ 101,866

$ 157,526

$ 347,848

$ 278,642

$ 301,388

$

5.62%

$

19,263

$

6.41%
815

4.67%

6.57%

5.54%

$ 447,954

$

— $ 250,000

$ 120,000

$ 838,032

2,490
2.62%

$1,189,760

5.64%

(1)  Maturities include $17.5 million in 2013 and $411.1 million in 2015 that may each be extended for one year, subject to certain 

conditions.

(2)   Represents principal maturities only and therefore excludes net discounts of $8.6 million.

The fair value of our debt was $2.1 billion at December 31, 2012 and $2.4 billion at December 31, 2011.  If interest rates 
had been 1% lower, the fair value of our fixed-rate debt would have increased by approximately $63.0 million at December 31,
2012 and $77.5 million at December 31, 2011.

53

 
 
 
 
 
 
 
 
 
The following table sets forth information pertaining to interest rate swap contracts in place as of December 31, 2012 and 

2011 and their respective fair values (dollars in thousands):

$

Notional
Amount

100,000
100,000
100,000
100,000
38,475 (1)
100,000
100,000
100,000
100,000
50,000
50,000
120,000
100,000
100,000 (2)
75,000 (2)
100,000 (2)
75,000 (2)

Floating Rate
Index

Fixed
Rate
0.6123% One-Month LIBOR
0.6100% One-Month LIBOR
0.8320% One-Month LIBOR
0.8320% One-Month LIBOR
3.8300% One-Month LIBOR + 2.25%
0.8055% One-Month LIBOR
0.8100% One-Month LIBOR
1.6730% One-Month LIBOR
1.7300% One-Month LIBOR
0.5025% One-Month LIBOR
0.5025% One-Month LIBOR
1.7600% One-Month LIBOR
1.9750% One-Month LIBOR
3.8415% Three-Month LIBOR
3.8450% Three-Month LIBOR
2.0525% Three-Month LIBOR-Reverse
2.0525% Three-Month LIBOR-Reverse

Effective
Date
1/3/2012
1/3/2012
1/3/2012
1/3/2012
11/2/2010
9/2/2014
9/2/2014
9/1/2015
9/1/2015
1/3/2011
1/3/2011
1/2/2009
1/1/2010
9/30/2011
9/30/2011
12/30/2011
12/30/2011

Expiration
Date
9/1/2014
9/1/2014
9/1/2015
9/1/2015
11/2/2015
9/1/2016
9/1/2016
8/1/2019
8/1/2019
1/3/2012
1/3/2012
5/1/2012
5/1/2012
9/30/2021
9/30/2021
9/30/2021
9/30/2021

Fair Value at December 31,

2012

2011

$

$

(594) $
(591)
(1,313)
(1,313)
(1,268)
(263)
(272)
(154)
(417)
—
—
—
—
—
—
—
—
(6,185) $

55
56
(66)
(49)
(1,054)
—
—
—
—
(1)
(1)
(552)
(532)
(16,333)
(12,275)
345
260
(30,147)

(1) The notional amount of this instrument is scheduled to amortize to $36.2 million.
(2) As described further in Note 11 to our consolidated financial statements, we cash settled these instruments, along with interest accrued 

thereon, for an aggregate of $29.7 million.

Based on our variable-rate debt balances, including the effect of interest rate swap contracts, our interest expense would 

have increased by $5.0 million in the 2012 and $3.8 million in 2011 if short-term interest rates were 1% higher. 

Item 8. Financial Statements and Supplementary Data 

This item is included in a separate section at the end of this report beginning on page F-1.

Item 9.  Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

None.

Item 9A.  Controls and Procedures

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, evaluated the 

effectiveness of our disclosure controls and procedures (as defined in Rule 13a-15(e) under the Exchange Act) as of 
December 31, 2012.  Based on this evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our 
disclosure controls and procedures as of December 31, 2012 were functioning effectively to provide reasonable assurance that 
the information required to be disclosed by us in reports filed or submitted under the Securities Exchange Act of 1934, as 
amended, is (i) recorded, processed, summarized and reported within the time periods specified in the SEC's rules and forms, 
and (ii) accumulated and communicated to our management, including our principal executive and principal financial officers,
or persons performing similar functions, as appropriate to allow timely decisions regarding required disclosure.

I.

Internal Control Over Financial Reporting

(a) Management's Annual Report on Internal Control Over Financial Reporting

Management's Annual Report on Internal Control Over Financial Reporting is included in a separate section at the end of 

this report on page F-2.

(b) Report of Independent Registered Public Accounting Firm

The Report of Independent Registered Public Accounting Firm is included in a separate section at the end of this report on 

page F-3.

54

 
(c) Change in Internal Control over Financial Reporting

No change in our internal control over financial reporting occurred during the most recent fiscal quarter that has materially 

affected, or is reasonably likely to materially affect, our internal control over financial reporting.

Item 9B.  Other Information

None.

PART III

Items 10, 11, 12, 13 & 14. Directors, Executive Officers and Corporate Governance; Executive Compensation; Security 
Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters; Certain Relationships 
and Related Transactions, and Director Independence; and Principal Accountant Fees and Services

For the information required by Item 10, Item 11, Item 12, Item 13 and Item 14, you should refer to our definitive proxy 
statement relating to the 2013 Annual Meeting of our Shareholders to be filed with the Securities and Exchange Commission no 
later than 120 days after the end of the fiscal year covered by this Annual Report on Form 10-K. 

Item 15.  Exhibits and Financial Statement Schedules 
(a)

The following documents are filed as exhibits to this Form 10-K:

PART IV

1. Financial Statements. See “Index to consolidated financial statements” on page F-1 of this Annual Report on Form 

10-K.

2. Financial Statement Schedule.  See “Index to consolidated financial statements” on page F-1 of this Annual Report 

on Form 10-K.

3. See section below entitled “Exhibits.” 

(b) Exhibits. Refer to the Exhibit Index that follows. Unless otherwise noted, the file number of all documents incorporated by

reference is 1-14023.

55

 
EXHIBIT
NO.

3.1.1

3.1.2

3.1.3

3.1.4

3.1.5

3.1.6

3.1.7

3.1.8

3.1.9

3.1.10

3.1.11

3.1.12

3.1.13

3.1.14

3.1.15

3.1.16

3.2.1

3.2.2

3.3

4.1

4.2

DESCRIPTION
Amended and Restated Declaration of Trust of Registrant (filed with the Registrant’s Registration Statement on 
Form S-4 (Commission File No. 333-45649) and incorporated herein by reference).

Articles of Amendment of Amended and Restated Declaration of Trust (filed on March 22, 2002 with the 
Company’s Annual Report on Form 10-K for the year ended December 31, 2001 and incorporated herein by 
reference).

Articles of Amendment of Amended and Restated Declaration of Trust (filed with the Company’s Current 
Report on Form 8-K on December 29, 2004 and incorporated herein by reference).

Articles Supplementary of Corporate Office Properties Trust Series B Cumulative Redeemable Preferred 
Shares, dated July 2, 1999 (filed with the Company’s Current Report on Form 8-K on July 7, 1999 and 
incorporated herein by reference).
Articles Supplementary of Corporate Office Properties Trust relating to the Series B Cumulative Redeemable 
Preferred Shares (filed with the Company’s Current Report on Form 8-K on December 29, 2004 and 
incorporated herein by reference).
Articles Supplementary of Corporate Office Properties Trust relating to the Series D Convertible Preferred 
Shares (filed with the Company’s Current Report on Form 8-K on December 29, 2004 and incorporated herein 
by reference).
Articles Supplementary of Corporate Office Properties Trust relating to the Series E Cumulative Redeemable 
Preferred Shares, dated April 3, 2001 (filed with the Registrant’s Current Report on Form 8-K on April 4, 2001 
and incorporated herein by reference).
Articles Supplementary of Corporate Office Properties Trust relating to the Series F Cumulative Redeemable 
Preferred Shares, dated September 13, 2001 (filed with the Registrant’s Amended Current Report on Form 8-K 
on September 14, 2001 and incorporated herein by reference).

Articles Supplementary of Corporate Office Properties Trust relating to the Series G Cumulative Redeemable 
Preferred Shares, dated August 6, 2003 (filed with the Registrant’s Registration Statement on Form 8-A on 
August 7, 2003 and incorporated herein by reference).
Articles Supplementary of Corporate Office Properties Trust relating to the Series H Cumulative Redeemable 
Preferred Shares, dated December 11, 2003 (filed with the Company’s Current Report on Form 8-K on 
December 12, 2003 and incorporated herein by reference).
Articles Supplementary of Corporate Office Properties Trust relating to the Series J Cumulative Redeemable 
Preferred Shares of Beneficial Interest (filed with the Company’s Current Report on Form 8-K dated July 19, 
2006 and incorporated herein by reference).
Articles Supplementary of Corporate Office Properties Trust relating to the Series K Cumulative Redeemable 
Convertible Preferred Shares of Beneficial Interest (filed with the Company’s Current Report on Form 8-K 
dated January 16, 2007 and incorporated herein by reference).

Articles Supplementary of Corporate Office Properties Trust relating to the Series L Cumulative Preferred 
Shares of Beneficial Interest (filed with the Company’s Current Report on Form 8-K dated June 25, 2012 and 
incorporated herein by reference).

Articles of Amendment of Amended and Restated Declaration of Trust (filed with the Company’s Current 
Report on Form 8-K dated May 28, 2008 and incorporated herein by reference).

Articles of Amendment of Amended and Restated Declaration of Trust (filed with the Company’s Current 
Report on Form 8-K dated May 19, 2010 and incorporated herein by reference).

Articles of Amendment of Amended and Restated Declaration of Trust (filed with the Company’s Current 
Report on Form 8-K dated June 19, 2012 and incorporated herein by reference).

Bylaws of the Registrant, as amended and restated on December 3, 2009 (filed with the Company’s Current 
Report on Form 8-K dated December 9, 2009 and incorporated herein by reference).

First Amendment to Amended and Restated Bylaws (filed with the Company’s Current Report on Form 8-K 
dated December 18, 2012 and incorporated herein by reference).

Form of certificate for the Registrant's Common Shares of Beneficial Interest, $0.01 par value per share (filed
with the Registrant's Registration Statement on Form S-4 (Commission File No. 333-45649) and incorporated
herein by reference).

Indenture, dated as of April 7, 2010, among Corporate Office Properties, L.P., as issuer, Corporate Office
Properties Trust, as guarantor, and Wells Fargo Bank, National Association, as trustee (filed with the Company’s
Current Report on Form 8-K dated April 16, 2010 and incorporated herein by reference).

4.25% Exchangeable Senior Note due 2030 of Corporate Office Properties, L.P. (filed with the Company’s
Current Report on Form 8-K dated April 16, 2010 and incorporated herein by reference).

56

EXHIBIT
NO.

10.1.1

10.1.2

10.1.3

10.1.4

10.1.5

10.1.6

10.1.7

10.1.8

10.1.9

10.1.10

10.1.11

10.1.12

10.1.13

10.1.14

10.1.15

10.1.16

10.1.17

10.1.18

10.1.19

DESCRIPTION
Second Amended and Restated Limited Partnership Agreement of the Operating Partnership, dated December 7, 
1999 (filed on March 16, 2000 with the Company’s Annual Report on Form 10-K for the year ended December 
31, 1999 and incorporated herein by reference).

First Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating 
Partnership, dated December 21, 1999 (filed on March 16, 2000 with the Company’s Annual Report on Form 
10-K for the year ended December 31, 1999 and incorporated herein by reference).

Second Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating 
Partnership, dated December 21, 1999 (filed with the Company’s Post Effective Amendment No. 2 to Form S-3 
dated November 1, 2000 (Registration Statement No. 333-71807) and incorporated herein by reference).

Third Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating 
Partnership, dated September 29, 2000 (filed with the Company’s Post Effective Amendment No. 2 to Form S-3 
dated November 1, 2000 (Registration Statement No. 333-71807) and incorporated herein by reference).

Fourth Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating 
Partnership, dated November 27, 2000 (filed on March 27, 2003 with the Company’s Annual Report on Form 
10-K for the year ended December 31, 2002 and incorporated herein by reference).

Fifth Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating 
Partnership, dated January 25, 2001 (filed on March 27, 2003 with the Company’s Annual Report on Form 10-K 
for the year ended December 31, 2002 and incorporated herein by reference).
Sixth Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating 
Partnership, dated April 3, 2001 (filed with the Company’s Current Report on Form 8-K dated April 4, 2001 and 
incorporated herein by reference).
Seventh Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating 
Partnership, dated August 30, 2001 (filed on March 27, 2003 with the Company’s Annual Report on Form 10-K 
for the year ended December 31, 2002 and incorporated herein by reference).

Eighth Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating 
Partnership, dated September 14, 2001 (filed with the Company’s Amended Current Report on Form 8-K dated 
September 14, 2001 and incorporated herein by reference).

Ninth Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating 
Partnership, dated October 16, 2001 (filed on March 27, 2003 with the Company’s Annual Report on Form 10-
K for the year ended December 31, 2002 and incorporated herein by reference).

Tenth Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating 
Partnership, dated December 29, 2001 (filed on March 27, 2003 with the Company’s Annual Report on Form 
10-K for the year ended December 31, 2002 and incorporated herein by reference).

Eleventh Amendment to Second Amended and Restated Limited Partnership Agreement of the Operating 
Partnership, dated December 15, 2002 (filed on March 27, 2003 with the Company’s Annual Report on Form 
10-K for the year ended December 31, 2002 and incorporated herein by reference).

Twelfth Amendment to Second Amended and Restated Limited Partnership Agreement of Corporate Office
Properties, L.P., dated June 2, 2003 (filed on August 12, 2003 with the Registrant’s Quarterly Report on Form 
10-Q for the quarter ended June 30, 2003 and incorporated herein by reference).

Thirteenth Amendment to Second Amended and Restated Limited Partnership Agreement of Corporate Office
Properties, L.P., dated August 11, 2003 (filed on March 27, 2003 with the Company’s Annual Report on Form 
10-K for the year ended December 31, 2002 and incorporated herein by reference).

Fourteenth Amendment to Second Amended and Restated Limited Partnership Agreement of Corporate Office
Properties, L.P., dated December 18, 2003 (filed on March 11, 2004 with the Company’s Annual Report on 
Form 10-K for the year ended December 31, 2003 and incorporated herein by reference).

Fifteenth Amendment to Second Amended and Restated Limited Partnership Agreement of Corporate Office
Properties, L.P., dated January 31, 2004 (filed on March 11, 2004 with the Company’s Annual Report on Form 
10-K for the year ended December 31, 2003 and incorporated herein by reference).

Sixteenth Amendment to Second Amended and Restated Limited Partnership Agreement of Corporate Office
Properties, L.P., dated April 15, 2004 (filed on May 7, 2004 with the Company’s Form 10-Q for the quarter 
ended March 31, 2004 and incorporated herein by reference).

Seventeenth Amendment to Second Amended and Restated Limited Partnership Agreement of Corporate Office
Properties, L.P., dated September 23, 2004 (filed with the Company’s Current Report on Form 8-K dated 
September 23, 2004 and incorporated herein by reference).

Eighteenth Amendment to Second Amended and Restated Limited Partnership Agreement of Corporate Office
Properties, L.P., dated April 18, 2005 (filed with the Company’s Form 8-K on April 22, 2005 and incorporated 
herein by reference).

57

EXHIBIT
NO.
10.1.20

10.1.21

10.1.22

10.1.23

10.1.24

10.1.25

10.1.26

10.1.27

10.1.28

10.1.29

10.1.30

10.2.1*

10.2.2*

10.2.3*

10.3*

10.4.1*

10.4.2*

10.4.3*

10.4.4*

DESCRIPTION
Nineteenth Amendment to Second Amended and Restated Limited Partnership Agreement of Corporate Office
Properties, L.P., dated July 8, 2005 (filed with the Company’s Current Report on Form 8-K on July 14, 2005 
and incorporated herein by reference).
Twentieth Amendment to Second Amended and Restated Limited Partnership Agreement of Corporate Office
Properties, L.P., dated June 29, 2006 (filed with the Company’s Current Report on Form 8-K dated July 6, 2006 
and incorporated herein by reference).
Twenty-First Amendment to Second Amended and Restated Limited Partnership Agreement of Corporate Office
Properties, L.P., dated July 20, 2006 (filed with the Company’s Current Report on Form 8-K dated July 26, 2006 
and incorporated herein by reference).

Twenty-Second Amendment to Second Amended and Restated Limited Partnership Agreement of Corporate 
Office Properties, L.P., dated January 9, 2007 (filed with the Company’s Current Report on Form 8-K dated 
January 16, 2007 and incorporated herein by reference).

Twenty-Third Amendment to Second Amended and Restated Limited Partnership Agreement of Corporate 
Office Properties, L.P., dated April 6, 2007 (filed with the Company’s Current Report on Form 8-K dated April
12, 2007 and incorporated herein by reference).

Twenty-Fourth Amendment to Second Amended and Restated Limited Partnership Agreement of Corporate 
Office Properties, L.P., dated November 2, 2007 (filed with the Company’s Current Report on Form 8-K dated 
November 5, 2007 and incorporated herein by reference).

Twenty-Fifth Amendment to Second Amended and Restated Limited Partnership Agreement of Corporate 
Office Properties, L.P., dated December 31, 2008 (filed with the Company’s Current Report on Form 8-K dated 
January 5, 2009 and incorporated herein by reference).

Twenty-Sixth Amendment to Second Amended and Restated Limited Partnership Agreement of Corporate 
Office Properties, L.P., dated March 4, 2010 (filed with the Company’s Current Report on Form 8-K dated 
March 10, 2010 and incorporated herein by reference).

Twenty-Seventh Amendment to Second Amended and Restated Limited Partnership Agreement of Corporate 
Office Properties, L.P., dated February 3, 2011 (filed with the Company’s Current Report on Form 8-K dated 
February 3, 2011 and incorporated herein by reference).

Twenty-Eighth Amendment to Second Amended and Restated Limited Partnership Agreement of Corporate 
Office Properties, L.P., dated September 15, 2011 (filed with the Company’s Current Report on Form 8-K dated 
September 16, 2011 and incorporated herein by reference).

Twenty-Ninth Amendment to Second Amended and Restated Limited Partnership Agreement of Corporate 
Office Properties, L.P., dated June 27, 2012 (filed with the Company’s Current Report on Form 8-K dated June 
27, 2012 and incorporated herein by reference).

Corporate Office Properties Trust 1998 Long Term Incentive Plan (filed with the Registrant’s Registration 
Statement on Form S-4 (Commission File No. 333-45649) and incorporated herein by reference).

Amendment No. 1 to Corporate Office Properties Trust 1998 Long Term Incentive Plan (filed on August 13, 
1999 with the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 1999 and incorporated 
herein by reference).

Amendment No. 2 to Corporate Office Properties Trust 1998 Long Term Incentive Plan (filed on March 22, 
2002 with the Company’s Annual Report on Form 10-K for the year ended December 31, 2001 and incorporated 
herein by reference).

Corporate Office Properties Trust Supplemental Nonqualified Deferred Compensation Plan (filed with the 
Registrant’s Registration Statement on Form S-8 (Commission File No. 333-87384) and incorporated herein by 
reference).

Employment Agreement, dated July 13, 2005, between Corporate Office Properties, L.P. Corporate Office
Properties Trust and Randall M. Griffin (filed with the Company’s Current Report on Form 8-K dated July 19, 
2005 and incorporated herein by reference).

Amendment to Employment Agreement, dated May 30, 2006, between Corporate Office Properties, L.P.,
Corporate Office Properties Trust and Randall M. Griffin (filed with the Company’s Current Report on Form 8-
K dated June 1, 2006 and incorporated herein by reference).

Second Amendment to Employment Agreement, dated December 31, 2008, between Corporate Office
Properties, L.P., Corporate Office Properties Trust and Randall M. Griffin (filed with the Company’s Current 
Report on Form 8-K dated January 5, 2009 and incorporated herein by reference).

Third Amendment to Employment Agreement, dated September 16, 2010, between Corporate Office Properties, 
L.P., Corporate Office Properties Trust and Randall M. Griffin (filed on October 29, 2010 with the Company’s
Quarterly Report on Form 10-Q for the quarter ended September 30, 2010 and incorporated herein by 
reference).

58

EXHIBIT
NO.
10.5.1*

10.5.2*

10.5.3*

10.5.4*

10.5.5*

10.5.6*

10.5.7*

10.6.1*

10.6.2*

10.6.3*

10.6.4*

10.7.1*

10.7.2*

10.8.1*

10.9

10.10

DESCRIPTION

Employment Agreement, dated September 12, 2002, between the Operating Partnership, COPT and Roger A.
Waesche, Jr. (filed on March 27, 2003 with the Company’s Annual Report on Form 10-K for the year ended 
December 31, 2002 and incorporated herein by reference).

Amendment to Employment Agreement, dated March 4, 2005, between the Operating Partnership, COPT and 
Roger A. Waesche, Jr. (filed on March 16, 2005 with the Company’s Annual Report on Form 10-K for the year 
ended December 31, 2004 and incorporated herein by reference).

Second Amendment to Employment Agreement, dated May 30, 2006, between Corporate Office Properties, 
L.P., Corporate Office Properties Trust, and Roger A. Waesche, Jr. (filed with the Company’s Current Report on 
Form 8-K dated June 1, 2006 and incorporated herein by reference).

Third Amendment to Employment Agreement, dated July 31, 2006, between Corporate Office Properties, L.P.,
Corporate Office Properties Trust, and Roger A. Waesche, Jr. (filed with the Company’s Current Report on 
Form 8-K dated August 1, 2006 and incorporated herein by reference).

Fourth Amendment to Employment Agreement, dated March 2, 2007, between Corporate Office Properties, 
L.P., Corporate Office Properties Trust, and Roger A. Waesche, Jr. (filed with the Company’s Annual Report on 
Form 10-K dated February 29, 2008 and incorporated herein by reference).

Fifth Amendment to Employment Agreement, dated September 16, 2010, between Corporate Office Properties, 
L.P., Corporate Office Properties Trust, and Roger A. Waesche, Jr. (filed on October 29, 2010  with the 
Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2010 and incorporated herein 
by reference).

Sixth Amendment to Employment Agreement, dated December 12, 2012,  between Corporate Office Properties, 
L.P., Corporate Office Properties Trust, and Roger A. Waesche, Jr. (filed herewith).

Employment Agreement, dated July 31, 2006, between Corporate Office Properties, L.P., Corporate Office
Properties Trust and Stephen E. Riffee (filed with the Company’s Current Report on Form 8-K dated August 1, 
2006 and incorporated herein by reference).

First Amendment to Employment Agreement, dated December 31, 2008, between Corporate Office Properties, 
L.P., Corporate Office Properties Trust and Stephen E. Riffee (filed with the Company’s Current Report on 
Form 8-K dated January 5, 2009 and incorporated herein by reference).

Second Amendment to Employment Agreement, dated September 16, 2010, between Corporate Office
Properties, L.P., Corporate Office Properties Trust and Stephen E. Riffee (filed on October 29, 2010 with the 
Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2010 and incorporated herein 
by reference).

Employment Agreement, dated June 14, 2012, between Corporate Office Properties, L.P., Corporate Office
Properties Trust and Stephen E. Riffee (filed with the Company’s Current Report on Form 8-K dated June 19, 
2012 and incorporated herein by reference).

Employment Agreement, dated December 31, 2008, between Corporate Development Services, LLC, Corporate 
Office Properties Trust and Wayne Lingafelter (filed with the Company’s Annual Report on Form 8-K dated 
January 5, 2009 and incorporated herein by reference).

First Amendment to Employment Agreement, dated September 16, 2010, between Corporate Development 
Services, LLC, Corporate Office Properties Trust and Wayne Lingafelter (filed on October 29, 2010 with the 
Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2010 and incorporated herein 
by reference).

Employment Agreement, dated September 15, 2011, between Corporate Office Properties, L.P., Corporate 
Office Properties Trust and Stephen E. Budorick (filed with the Company’s Current Report on Form 8-K dated 
September 16, 2011 and incorporated herein by reference).

Amended and Restated Registration Rights Agreement, dated March 16, 1998, for the benefit of certain 
shareholders of the Company (filed on August 12, 1998 with the Company’s Quarterly Report on Form 10-Q for 
the quarter ended June 30, 1998 and incorporated herein by reference).

Registration Rights Agreement, dated January 25, 2001, for the benefit of Barony Trust Limited (filed on March 
22, 2001 with the Company’s Annual Report on Form 10-K for the year ended December 31, 2000 and 
incorporated herein by reference).

10.11.1*

10.11.2*

Corporate Office Properties Trust Supplemental Nonqualified Deferred Compensation Plan (filed with the 
Company’s Current Report on Form 8-K dated December 10, 2008 and incorporated herein by reference).

First Amendment to the Corporate Office Properties Trust Supplemental Nonqualified Deferred Compensation 
Plan dated December 4, 2008 (filed with the Company’s Current Report on Form 8-K dated December 10, 2008 
and incorporated herein by reference).

59

EXHIBIT
NO.
10.12.1*

10.12.2*

10.13

10.14

10.15

10.16

10.17

12.1

21.1

23.1

31.1

31.2

32.1

32.2

DESCRIPTION

Corporate Office Properties Trust 2008 Omnibus Equity and Incentive Plan (included in Appendix A to the 
Company’s Definitive Proxy Statement on Schedule 14A filed with the Securities and Exchange Commission 
on April 9, 2008 and incorporated herein by reference).

Corporate Office Properties Trust Amended and Restated 2008 Omnibus Equity and Incentive Plan (included in 
Annex A to the Company’s Definitive Proxy Statement on Schedule 14A filed with the Securities and Exchange 
Commission on March 30, 2010 and incorporated herein by reference).

Registration Rights Agreement, dated April 7, 2010, among Corporate Office Properties, L.P., Corporate Office
Properties Trust, J.P. Morgan Securities Inc. and RBC Capital Markets Corporation (filed with the Company’s
Current Report on Form 8-K dated April 16, 2010 and incorporated herein by reference).

Common Stock Delivery Agreement, dated April 7, 2010, among Corporate Office Properties, L.P. and 
Corporate Office Properties Trust (filed with the Company’s Current Report on Form 8-K dated April 16, 2010 
and incorporated herein by reference).

Credit Agreement, dated as of September 1, 2011, by and among Corporate Office Properties, L.P.; Corporate 
Office Properties Trust; J.P. Morgan Securities LLC; KeyBanc Capital Markets; KeyBank National Association;
JPMorgan Chase Bank, N.A.; Bank of America, N.A.; Royal Bank of Canada; Wells Fargo Bank, National 
Association; Barclays Bank PLC; PNC Bank, National Association; Regions Bank; Manufacturers and Traders
Trust Company; and SunTrust Bank (filed with the Company’s Current Report on Form 8-K/A dated 
September 1, 2011 and incorporated herein by reference).

Term Loan Agreement, dated as of September 1, 2011, by and among Corporate Office Properties, L.P.;
Corporate Office Properties Trust; J.P. Morgan Securities LLC; KeyBanc Capital Markets; KeyBank National 
Association; JPMorgan Chase Bank, N.A.; Bank of America, N.A.; Royal Bank of Canada; Barclays Bank 
PLC; PNC Bank, National Association; Wells Fargo Bank, National Association; Regions Bank; Manufacturers 
and Traders Trust Company; and SunTrust Bank (filed with the Company’s Current Report on Form 8-K/A
dated September 1, 2011 and incorporated herein by reference).

Term Loan Agreement, dated as of February 14, 2012, by and among Corporate Office Properties, L.P.;
Corporate Office Properties Trust; J.P. Morgan Securities LLC; KeyBanc Capital Markets; KeyBank National 
Association; JPMorgan Chase Bank, N.A.; Bank of America, N.A.; Royal Bank of Canada; and Wells Fargo
Bank, National Association (filed with the Company’s Quarter Report on Form 10-Q for the quarter ended 
March 31, 2012 and incorporated herein by reference).

Statement regarding Computation of Earnings to Combined Fixed Charges and Preferred Share Dividends (filed
herewith).

Subsidiaries of Registrant (filed herewith).

Consent of Independent Registered Public Accounting Firm (filed herewith).

Certification of the Chief Executive Officer of Corporate Office Properties Trust required by Rule 13a-14(a)
under the Securities Exchange Act of 1934, as amended (filed herewith).

Certification of the Chief Financial Officer of Corporate Office Properties Trust required by Rule 13a-14(a)
under the Securities Exchange Act of 1934, as amended (filed herewith).

Certification of the Chief Executive Officer of Corporate Office Properties Trust required by Rule 13a-14(b)
under the Securities Exchange Act of 1934, as amended.  (This exhibit shall not be deemed “filed” for purposes
of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that
section.  Further, this exhibit shall not be deemed to be incorporated by reference into any filing under the
Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended.) (Furnished herewith.)

Certification of the Chief Financial Officer of Corporate Office Properties Trust required by Rule 13a-14(b)
under the Securities Exchange Act of 1934, as amended.  (This exhibit shall not be deemed “filed” for purposes
of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that
section.  Further, this exhibit shall not be deemed to be incorporated by reference into any filing under the
Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended.) (Furnished herewith.)

101.INS

101.SCH

101.CAL

101.LAB

101.PRE

101.DEF

XBRL Instance Document (furnished herewith).

XBRL Taxonomy Extension Schema Document (furnished herewith).

XBRL Taxonomy Extension Calculation Linkbase Document (furnished herewith).

XBRL Extension Labels Linkbase (furnished herewith).

XBRL Taxonomy Extension Presentation Linkbase Document (furnished herewith).

XBRL Taxonomy Extension Definition Linkbase Document (furnished herewith).

* - Indicates a compensatory plan or arrangement required to be filed as an exhibit to this Form 10-K.

(c)

Not applicable.

60

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.

SIGNATURES

Date: February 12, 2013

Date: February 12, 2013

CORPORATE OFFICE PROPERTIES TRUST

/s/ Roger A. Waesche, Jr.
Roger A. Waesche, Jr.
President and Chief Executive Officer

/s/ Stephen E. Riffee
Stephen E. Riffee
Executive Vice President and Chief Financial Officer

By:

By:

61

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following 

persons on behalf of the Registrant and in the capacities and on the dates indicated:

Signatures

 /s/ Jay H . Shidler
(Jay H. Shidler)

/s/ Clay W. Hamlin, III
(Clay W. Hamlin, III)

/s/ Roger A. Waesche, Jr.
(Roger A. Waesche, Jr.)

/s/ Stephen E. Riffee
(Stephen E. Riffee)

/s/ Gregory J. Thor
(Gregory J. Thor)

/s/ Thomas F. Brady
(Thomas F. Brady)

/s/ Robert L. Denton
( Robert L. Denton)

/s/ Elizabeth A. Hight
(Elizabeth A. Hight)

/s/ David M. Jacobstein
(David M. Jacobstein)

/s/ Steven D. Kesler
(Steven D. Kesler)

/s/ Richard Szafranski
(Richard Szafranski)

/s/ Kenneth D. Wethe
(Kenneth D. Wethe)

Title

Date

Chairman of the Board and Trustee

February 12, 2013

Vice Chairman of the Board and Trustee

February 12, 2013

President and Chief Executive Officer and Trustee February 12, 2013

Executive Vice President and Chief Financial
Officer (Principal Financial Officer)

February 12, 2013

Senior Vice President, Controller and Chief
Accounting Officer (Principal Accounting Officer)

February 12, 2013

February 12, 2013

February 12, 2013

February 12, 2013

February 12, 2013

February 12, 2013

February 12, 2013

February 12, 2013

Trustee

Trustee

Trustee

Trustee

Trustee

Trustee

Trustee

62

CORPORATE OFFICE PROPERTIES TRUST AND SUBSIDIARIES
INDEX TO FINANCIAL STATEMENTS

CONSOLIDATED FINANCIAL STATEMENTS

Management’s Report of Internal Control Over Financial Reporting

Report of Independent Registered Public Accounting Firm

Consolidated Balance Sheets as of December 31, 2012 and 2011

Consolidated Statements of Operations for the Years Ended December 31, 2012, 2011 and 2010

Consolidated Statements of Comprehensive Income for the Years Ended December 31, 2012, 2011 and 

2010

Consolidated Statements of Equity for the Years Ended December 31, 2012, 2011 and 2010

Consolidated Statements of Cash Flows for the Years Ended December 31, 2012, 2011 and 2010

Notes to Consolidated Financial Statements

FINANCIAL STATEMENT SCHEDULE
Schedule III - Real Estate and Accumulated Depreciation as of December 31, 2012

F-2

F-3

F-4

F-5

F-6

F-7

F-8

F-10

F-50

F-1

 
Management’s Report On Internal Control Over Financial Reporting

Management is responsible for establishing and maintaining adequate internal control over financial reporting, and for 

performing an assessment of the effectiveness of internal control over financial reporting as of December 31, 2012.  Internal 
control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial 
reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting 
principles.  Our internal control over financial reporting includes those policies and procedures that (i) pertain to the 
maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of our assets; (ii) 
provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in 
accordance with generally accepted accounting principles, and that our receipts and expenditures are being made only in 
accordance with authorizations of our management and trustees; and (iii) provide reasonable assurance regarding prevention or 
timely detection of unauthorized acquisition, use or disposition of our assets that could have a material effect on the financial 
statements.  Because of its inherent limitations, internal control over financial reporting may not prevent or detect 
misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may 
become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may 
deteriorate.

Management performed an assessment of the effectiveness of our internal control over financial reporting as of 

December 31, 2012 based upon criteria in Internal Control - Integrated Framework issued by the Committee of Sponsoring 
Organizations of the Treadway Commission (“COSO”).  Based on our assessment, management determined that our internal 
control over financial reporting was effective as of December 31, 2012 based on the criteria in Internal Control-Integrated 
Framework issued by the COSO. 

The effectiveness of the Company's internal control over financial reporting as of December 31, 2012 has been audited by 
PricewaterhouseCoopers LLP, an independent registered public accounting firm, as stated in their report which appears herein.

F-2

Report of Independent Registered Public Accounting Firm 

To the Board of Trustees and Shareholders of Corporate Office Properties Trust:

In our opinion, the consolidated financial statements listed in the accompanying index present fairly, in all material respects, the 
financial position of Corporate Office Properties Trust and its subsidiaries at December 31, 2012 and December 31, 2011, and 
the results of their operations and their cash flows for each of the three years in the period ended December 31, 2012 in 
conformity with accounting principles generally accepted in the United States of America.  In addition, in our opinion, the 
financial statement schedule listed in the accompanying index presents fairly, in all material respects, the information set forth 
therein when read in conjunction with the related consolidated financial statements. Also in our opinion, the Company 
maintained, in all material respects, effective internal control over financial reporting as of December 31, 2012, based on 
criteria established in Internal Control - Integrated Framework issued by the Committee of Sponsoring Organizations of the 
Treadway Commission (COSO). The Company’s management is responsible for these financial statements and financial 
statement schedule, for maintaining effective internal control over financial reporting and for its assessment of the effectiveness
of internal control over financial reporting, included in the accompanying “Management's Report on Internal Control over 
Financial Reporting”.  Our responsibility is to express opinions on these financial statements, on the financial statement 
schedule, and on the Company’s internal control over financial reporting based on our integrated audits. We conducted our 
audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards 
require that we plan and perform the audits to obtain reasonable assurance about whether the financial statements are free of 
material misstatement and whether effective internal control over financial reporting was maintained in all material respects.
Our audits of the financial statements included examining, on a test basis, evidence supporting the amounts and disclosures in 
the financial statements, assessing the accounting principles used and significant estimates made by management, and 
evaluating the overall financial statement presentation.  Our audit of internal control over financial reporting included obtaining 
an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and 
evaluating the design and operating effectiveness of internal control based on the assessed risk.  Our audits also included 
performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a 
reasonable basis for our opinions.

A company's internal control over financial reporting is a process designed to provide reasonable assurance regarding the 
reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally 
accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures 
that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and 
dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to 
permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and 
expenditures of the company are being made only in accordance with authorizations of management and directors of the 
company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or 
disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also,
projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate 
because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ PricewaterhouseCoopers LLP

Baltimore, MD
February 12, 2013

F-3

Corporate Office Properties Trust and Subsidiaries
Consolidated Balance Sheets
(in thousands, except share data)

Assets
Properties, net:

Operating properties, net
Projects in development or held for future development
Total properties, net
Assets held for sale, net
Cash and cash equivalents
Restricted cash and marketable securities
Accounts receivable (net of allowance for doubtful accounts of $4,694 and $3,546, respectively)
Deferred rent receivable
Intangible assets on real estate acquisitions, net
Deferred leasing and financing costs, net
Prepaid expenses and other assets
Total assets
Liabilities and equity
Liabilities:
Debt, net
Accounts payable and accrued expenses
Rents received in advance and security deposits
Dividends and distributions payable
Deferred revenue associated with operating leases
Distributions received in excess of investment in unconsolidated real estate joint venture
Interest rate derivatives
Other liabilities

Total liabilities
Commitments and contingencies (Note 20)
Redeemable noncontrolling interest
Equity:
Corporate Office Properties Trust’ s shareholders’ equity:

Preferred Shares of beneficial interest at liquidation preference 
Common Shares of beneficial interest ($0.01 par value; 125,000,000 shares authorized, shares 

issued and outstanding of 80,952,986 at December 31, 2012 and 72,011,324 at December 31, 
2011)

Additional paid-in capital
Cumulative distributions in excess of net income
Accumulated other comprehensive loss

Total Corporate Office Properties Trust’s shareholders’ equity
Noncontrolling interests in subsidiaries:

Common units in the Operating Partnership
Preferred units in the Operating Partnership
Other consolidated entities
Noncontrolling interests in subsidiaries

Total equity
Total liabilities and equity

See accompanying notes to consolidated financial statements.

F-4

December 31,

2012

2011

$ 2,597,666
565,378
3,163,044
140,229
10,594
21,557
19,247
85,802
75,879
59,952
77,455
$ 3,653,759

$ 2,714,056
638,919
3,352,975
116,616
5,559
36,232
26,032
86,856
89,120
66,515
83,650
$ 3,863,555

$ 2,019,168
97,922
27,632
28,698
11,995
6,420
6,185
8,942
2,206,962

$ 2,426,303
95,714
29,548
35,038
15,554
6,071
30,863
9,657
2,648,748

10,298

8,908

333,833

216,333

809
1,653,672
(617,455)
(5,435)
1,365,424

720
1,451,078
(534,041)
(1,733)
1,132,357

52,122
8,800
10,153
71,075
1,436,499
$ 3,653,759

55,183
8,800
9,559
73,542
1,205,899
$ 3,863,555

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Corporate Office Properties Trust and Subsidiaries
Consolidated Statements of Operations
(in thousands, except per share data)

Revenues

Rental revenue
Tenant recoveries and other real estate operations revenue
Construction contract and other service revenues

Total revenues

Expenses

Property operating expenses
Depreciation and amortization associated with real estate operations
Construction contract and other service expenses
Impairment losses
General, administrative and leasing expenses
Business development expenses and land carry costs

Total operating expenses

Operating income
Interest expense
Interest and other income
Loss on early extinguishment of debt
Loss on interest rate derivatives
Income (loss) from continuing operations before equity in (loss) income of 

unconsolidated entities and income taxes

Equity in (loss) income of unconsolidated entities
Income tax (expense) benefit
Income (loss) from continuing operations
Discontinued operations
Income (loss) before gain on sales of real estate
Gain on sales of real estate, net of income taxes
Net income (loss)
Net loss (income) attributable to noncontrolling interests:

Common units in the Operating Partnership
Preferred units in the Operating Partnership
Other consolidated entities

Net income (loss) attributable to Corporate Office Properties Trust
Preferred share dividends
Issuance costs associated with redeemed preferred shares
Net (loss) income attributable to Corporate Office Properties Trust common 

shareholders

Net income (loss) attributable to Corporate Office Properties Trust:

Income (loss) from continuing operations
Discontinued operations, net
Net income (loss) attributable to Corporate Office Properties Trust

Basic earnings per common share (1)

(Loss) income from continuing operations
Discontinued operations
Net (loss) income attributable to COPT common shareholders

Diluted earnings per common share (1)

(Loss) income from continuing operations
Discontinued operations
Net (loss) income attributable to COPT common shareholders

For the Years Ended December 31,

2012

2011

2010

$ 367,654
86,517
73,836
528,007

$ 348,006
80,490
84,345
512,841

$ 316,038
71,521
104,675
492,234

167,161
113,480
70,576
43,214
31,900
5,711
432,042
95,965
(94,624)
7,172
(943)
—

7,570
(546)
(381)
6,643
13,677
20,320
21
20,341

87
(660)
1,209
20,977
(20,844)
(1,827)

162,397
113,111
81,639
83,478
30,314
6,122
477,061
35,780
(98,222)
5,603
(1,639)
(29,805)

(88,283)
(331)
6,710
(81,904)
(48,404)
(130,308)
2,732
(127,576)

8,439
(660)
369
(119,428)
(16,102)
—

146,617
97,897
102,302
—
28,501
6,403
381,720
110,514
(95,729)
9,568
—
—

24,353
1,376
(108)
25,621
17,054
42,675
2,829
45,504

(2,116)
(660)
32
42,760
(16,102)
—

$

$

$

$

$

$

$

(1,694) $ (135,530) $

26,658

8,051
12,926
20,977

$ (73,884) $
(45,544)
$ (119,428) $

27,029
15,731
42,760

(0.21) $
0.18
(0.03) $

(0.21) $
0.18
(0.03) $

(1.31) $
(0.66)
(1.97) $

(1.31) $
(0.66)
(1.97) $

0.17
0.26
0.43

0.17
0.26
0.43

(1) Basic and diluted earnings per common share are calculated based on amounts attributable to common shareholders of Corporate Office

Properties Trust.

See accompanying notes to consolidated financial statements.

F-5

 
 
 
 
 
 
 
 
 
Corporate Office Properties Trust and Subsidiaries
Consolidated Statements of Comprehensive Income
(in thousands) 

Net income (loss)
Other comprehensive (loss) income

Unrealized losses on interest rate derivatives
Losses on interest rate derivatives included in net income (loss)
Loss on interest rate derivatives upon discontinuing hedge 

accounting

Other comprehensive (loss) income
Comprehensive income (loss)
Comprehensive loss (income) attributable to noncontrolling 

interests

Comprehensive income (loss) attributable to COPT

For the Years Ended December 31,

2012
20,341

$

2011

$ (127,576) $

2010
45,504

(7,676)
3,697

—
(3,979)
16,362

(31,531)
4,601

28,430
1,500
(126,076)

(5,473)
3,689

—
(1,784)
43,720

961
17,323

8,132
$ (117,944) $

(2,591)
41,129

$

See accompanying notes to consolidated financial statements.

F-6

 
 
 
 
Corporate Office Properties Trust and Subsidiaries
Consolidated Statements of Equity
(Dollars in thousands)

Preferred
Shares

Common
Shares

Balance at December 31, 2009 (58,342,673 common shares outstanding)
Issuance of 4.25% Exchangeable Senior Notes
Conversion of common units to common shares (663,498 shares)
Common shares issued to the public (7,475,000 shares)
Exercise of share options (278,656 shares)
Share-based compensation
Restricted common share redemptions (105,215 shares)
Adjustments to noncontrolling interests resulting from changes in Operating Partnership ownership
Comprehensive income
Dividends
Distributions to owners of common and preferred units in the Operating Partnership
Contributions from noncontrolling interests in other consolidated entities
Acquisition of noncontrolling interests in other consolidated entities
Balance at December 31, 2010 (66,931,582 common shares outstanding)
Conversion of common units to common shares (100,939 shares)
Common shares issued to the public (4,600,000 shares)
Exercise of share options (191,264 shares)
Share-based compensation
Restricted common share redemptions (114,687 shares)
Adjustments to noncontrolling interests resulting from changes in Operating Partnership ownership
Comprehensive loss
Dividends
Distributions to owners of common and preferred units in the Operating Partnership
Contributions from noncontrolling interests in other consolidated entities
Distributions to noncontrolling interest in other consolidated entities
Adjustment to arrive at fair value of noncontrolling interest
Increase in tax benefit from share-based compensation
Balance at December 31, 2011 (72,011,324 common shares outstanding)
Conversion of common units to common shares (234,246 shares)
Preferred shares issued to the public (6,900,000 shares)
Common shares issued to the public (8,625,000 shares)
Redemption of preferred shares (2,200,000 shares)
Exercise of share options (61,624 shares)
Share-based compensation
Restricted common share redemptions (139,851 shares)
Adjustments to noncontrolling interests resulting from changes in Operating Partnership ownership
Comprehensive income
Dividends
Distributions to owners of common and preferred units in the Operating Partnership
Distributions to noncontrolling interests in other consolidated entities
Adjustment to arrive at fair value of noncontrolling interest
Increase in tax benefit from share-based compensation
Balance at December 31, 2012 (80,952,986 common shares outstanding)

$ 216,333
—
—
—
—
—
—
—
—
—
—
—
—
216,333
—
—
—
—
—
—
—
—
—
—
—
—
—
216,333
—
172,500
—
(55,000)
—
—
—
—
—
—
—
—
—
—
$ 333,833

$

$

583
—
6
75
3
2
—
—
—
—
—
—
—
669
1
46
2
2
—
—
—
—
—
—
—
—
—
720
2
—
86
—
—
1
—
—
—
—
—
—
—
—
809

Additional
Paid-in
Capital

$ 1,022,452
18,149
9,561
245,546
4,572
11,843
(3,913)
(10,274)
—
—
—
—
(2,344)
1,295,592
1,520
145,321
2,459
14,265
(3,990)
(2,798)
—
—
—
(23)
—
(1,315)
47
1,451,078
2,812
(6,848)
204,610
1,827
928
11,183
(3,379)
(4,627)
—
—
—
—
(3,955)
43
$ 1,653,672

See accompanying notes to consolidated financial statements.

Cumulative
Distributions in
Excess of Net
Income

Accumulated
Other
Comprehensive
Loss

Noncontrolling
Interests

$

$

(209,941) $
—
—
—
—
—
—
—
42,760
(114,613)
—
—
—
(281,794)
—
—
—
—
—
—
(119,428)
(132,819)
—
—
—
—
—
(534,041)
—
—
—
(1,827)
—
—
—
—
20,977
(102,564)
—
—
—
—
(617,455) $

(1,907) $
—
—
—
—
—
—
—
(2,256)
—
—
—
—
(4,163)
—
—
—
—
—
—
2,430
—
—
—
—
—
—
(1,733)
—
—
—
—
—
—
—
—
(3,702)
—
—
—
—
—
(5,435) $

93,112
—
(9,567)
—
—
—
—
10,274
3,216
—
(7,926)
510
(2,118)
87,501
(1,521)
—
—
—
—
2,798
(7,671)
—
(7,833)
284
(16)
—
—
73,542
(2,814)
—
—
—
—
—
—
4,627
1,652
—
(5,277)
(655)
—
—
71,075

Total

$ 1,120,632
18,149
—
245,621
4,575
11,845
(3,913)
—
43,720
(114,613)
(7,926)
510
(4,462)
1,314,138
—
145,367
2,461
14,267
(3,990)
—
(124,669)
(132,819)
(7,833)
261
(16)
(1,315)
47
1,205,899
—
165,652
204,696
(55,000)
928
11,184
(3,379)
—
18,927
(102,564)
(5,277)
(655)
(3,955)
43
$ 1,436,499

F-7

 
Corporate Office Properties Trust and Subsidiaries
Consolidated Statements of Cash Flows
(in thousands)

Cash flows from operating activities

Revenues from real estate operations received
Construction contract and other service revenues received
Property operating expenses paid
Construction contract and other service expenses paid
General, administrative, leasing, business development and land carry costs paid
Interest expense paid
Previously accreted interest expense paid
Settlement of interest rate derivatives
Proceeds from sale of trading marketable securities
Exit costs on property dispositions
Payments in connection with early extinguishment of debt
Interest and other income received
Income taxes paid

Net cash provided by operating activities

Cash flows from investing activities

Purchases of and additions to properties

Construction, development and redevelopment
Acquisitions of operating properties
Tenant improvements on operating properties
Other capital improvements on operating properties

Proceeds from sales of properties
Proceeds from sale of equity method investment
Mortgage and other loan receivables funded or acquired
Mortgage and other loan receivables payments received
Leasing costs paid
Investment in unconsolidated entities
Other

Net cash provided by (used in) investing activities

Cash flows from financing activities

Proceeds from debt

Revolving Credit Facility
Other debt proceeds

Repayments of debt

Revolving Credit Facility
Scheduled principal amortization
Other debt repayments
Deferred financing costs paid
Net proceeds from issuance of preferred shares
Net proceeds from issuance of common shares
Redemption of preferred shares
Acquisition of noncontrolling interests in consolidated entities
Common share dividends paid
Preferred share dividends paid
Distributions paid to noncontrolling interests in the Operating Partnership
Restricted share redemptions
Other

Net cash (used in) provided by financing activities

Net increase (decrease) in cash and cash equivalents
Cash and cash equivalents

Beginning of period
End of period

For the Years Ended December 31,

2012

2011

2010

$ 483,421
77,831
(174,683)
(67,952)
(22,904)
(87,394)
—
(29,738)
18,975
(4,146)
(2,637)
1,073
(8)
191,838

$ 476,762
88,433
(180,041)
(94,140)
(28,027)
(93,715)
(17,314)
—
—
—
(353)
698
(160)
152,143

$ 453,847
112,644
(173,625)
(124,867)
(23,969)
(87,917)
—
—
—
—
—
323
—
156,436

(165,275)
(48,308)
(27,103)
(20,066)
290,603
—
(14,232)
10,113
(13,278)
(250)
1,540
13,744

(232,667)
(32,856)
(37,195)
(16,906)
79,638
5,773
(23,377)
16,759
(15,997)
(250)
(3,309)
(260,387)

(303,064)
(146,275)
(20,826)
(10,422)
27,576
—
(5,588)
1,568
(14,403)
(6,600)
(1,133)
(479,167)

329,000
403,117

1,180,000
456,206

663,000
359,912

(991,000)
(11,684)
(124,386)
(3,371)
165,652
205,425
(55,000)
—
(89,161)
(19,087)
(5,828)
(3,379)
(845)
(200,547)
5,035

(813,000)
(13,755)
(698,100)
(13,113)
—
147,828
—
—
(114,643)
(16,102)
(7,875)
(3,990)
245
103,701
(4,543)

(733,000)
(13,996)
(66,663)
(8,570)
—
250,196
—
(4,462)
(93,792)
(16,102)
(8,099)
(3,913)
60
324,571
1,840

5,559
10,594

10,102
5,559

$

$

8,262
10,102

$

See accompanying notes to consolidated financial statements.

F-8

 
 
 
 
 
 
 
 
 
 
 
Corporate Office Properties Trust and Subsidiaries
Consolidated Statements of Cash Flows (continued)
(in thousands)

Reconciliation of net income (loss) to net cash provided by operating activities:

Net income (loss)
Adjustments to reconcile net income (loss) to net cash provided by operating 

activities:
Depreciation and other amortization
Impairment losses
Loss on interest rate derivatives
Settlement of previously accreted interest expense
Amortization of deferred financing costs
Increase in deferred rent receivable
Amortization of net debt discounts
Gain on sales of real estate
Gain on equity method investment
Share-based compensation
(Gain) loss on early extinguishment of debt
Other

Changes in operating assets and liabilities:

Decrease (increase) in accounts receivable
Decrease (increase) in restricted cash and marketable securities
Decrease (increase) in prepaid expenses and other assets
Increase (decrease) in accounts payable, accrued expenses and other liabilities
Decrease in rents received in advance and security deposits
Decrease in interest rate derivatives in connection with cash settlement

Net cash provided by operating activities

Supplemental schedule of non-cash investing and financing activities:

For the Years Ended December 31,

2012

2011

2010

$

20,341

$ (127,576) $

45,504

124,418
62,702
—
—
6,243
(11,776)
3,155
(20,961)
—
9,982
(3,430)
(3,195)

136,594
151,021
29,805
(17,314)
6,596
(10,102)
5,540
(7,528)
(2,452)
11,920
1,670
(314)

125,819
—
—
—
5,871
(5,706)
5,841
(3,917)
(6,406)
11,845
—
(3,872)

6,693
14,934
8,550
4,101
(1,916)
(28,003)
$ 191,838

(7,094)
2,160
(687)
(18,041)
(2,055)
—
$ 152,143

(1,680)
(4,875)
8,674
(19,644)
(1,018)
—
$ 156,436

(Decrease) increase in accrued capital improvements, leasing and other investing

activity costs

$
Increase in property, debt and other liabilities in connection with acquisitions
$
Decrease in property in connection with surrender of property in settlement of debt $
$
Decrease in debt in connection with surrender of property in settlement of debt
Increase in property and noncontrolling interests in connection with property 

contribution by a noncontrolling interest in a joint venture

$

(1,227) $
— $
$
$

12,042
16,304

11,719
3,040

$
$
— $
— $

4,576
74,244
—
—

— $

— $

9,000

Increase (decrease) in fair value of derivatives applied to AOCL and

noncontrolling interests

Dividends/distribution payable
Decrease in noncontrolling interests and increase in shareholders’ equity in
connection with the conversion of common units into common shares
Adjustments to noncontrolling interests resulting from changes in Operating

Partnership ownership

Increase in redeemable noncontrolling interest and decrease in shareholders’ equity 
in connection with adjustment to arrive at fair value of noncontrolling interest

$
$

$

$

$

4,040
28,698

2,814

4,627

3,955

$
$

$

$

$

1,438
35,038

1,521

2,798

1,315

$
$

$

$

$

(1,846)
32,986

9,567

10,274

—

See accompanying notes to consolidated financial statements.

F-9

 
 
 
 
 
 
 
 
 
 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements

1.

Organization

Corporate Office Properties Trust (“COPT”) and subsidiaries (collectively, the “Company,” “we” or “us”) is a fully-

integrated and self-managed real estate investment trust (“REIT”) that focuses primarily on serving the specialized 
requirements of United States Government agencies and defense contractors, most of whom are engaged in defense information 
technology and national security related activities. We generally acquire, develop, manage and lease office and data center 
properties concentrated in large office parks located near knowledge-based government demand drivers and/or in targeted
markets or submarkets in the Greater Washington, DC/Baltimore region. As of December 31, 2012, our investments in real 
estate included the following:

•
•

•

•

208 operating office properties totaling 18.8 million square feet;
13 office properties under construction or redevelopment, or for which we were contractually committed to construct, that 
we estimate will total approximately 1.7 million square feet upon completion, including two partially operational properties 
included above;
land held or under pre-construction totaling 1,694 acres (including 561 controlled but not owned) that we believe are 
potentially developable into approximately 19.3 million square feet; and
a partially operational, wholesale data center which upon completion and stabilization is expected to have a critical load of 
18 megawatts.

We conduct almost all of our operations through our operating partnership, Corporate Office Properties, L.P. (the 
“Operating Partnership”), of which we are the managing general partner.  The Operating Partnership owns real estate both 
directly and through subsidiary partnerships and limited liability companies (“LLCs”).  A summary of our Operating 
Partnership’s forms of ownership and the percentage of those ownership forms owned by COPT as of December 31, 2012 and 
2011 follows: 

Common Units
Series G Preferred Units
Series H Preferred Units
Series I Preferred Units
Series J Preferred Units
Series K Preferred Units
Series L Preferred Units

December 31,

2012

2011

94%
95%
N/A
100%
100% 100%
0%
100% 100%
100% 100%
N/A
100%

0%

Three of our trustees also controlled, either directly or through ownership by other entities or family members, an additional 4%
of the Operating Partnership’s common units (“common units”) as of December 31, 2012.

In addition to owning real estate, the Operating Partnership also owns subsidiaries that provide real estate services such as 

property management and construction and development services primarily for our properties but also for third parties.

2. 

Summary of Significant Accounting Policies

Basis of Presentation

The consolidated financial statements include the accounts of COPT, the Operating Partnership, their subsidiaries and other 

entities in which we have a majority voting interest and control.  We also consolidate certain entities when control of such 
entities can be achieved through means other than voting rights (“variable interest entities” or “VIEs”) if we are deemed to be the 
primary beneficiary of such entities.  We eliminate all significant intercompany balances and transactions in consolidation.

We use the equity method of accounting when we own an interest in an entity and can exert significant influence over the 
entity’s operations but cannot control the entity’s operations. We discontinue equity method accounting if our investment in an 
entity (and net advances) is reduced to zero unless we have guaranteed obligations of the entity or are otherwise committed to 
provide further financial support for the entity.

F-10

 
 
 
 
 
 
 
 
 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

We use the cost method of accounting when we own an interest in an entity and cannot exert significant influence over its 

operations.

Revisions 

During 2012, we identified the following errors:

•

•

•

•

the misapplication of accounting guidance related to the recognition of a deferred tax asset resulting from an impairment of 
assets in the fourth quarter of 2011 that failed to consider a partial reversal of that asset that would result from a cancellation 
of related inter-company debt in the first quarter of 2012.  The effect of this error was an overstatement of our income tax 
benefit and an understatement of our net loss for the year ended December 31, 2011 of $4.0 million.  Based on an evaluation 
against our projected annual net income at that time, this error was previously reported as an out-of-period adjustment in the 
three months ended March 31, 2012;
an over-accrual of incentive compensation cost, the effect of which was an overstatement of general and administrative 
expenses and an overstatement of net loss for the calendar quarter and year ended December 31, 2011 of $700,000.  Based 
on an evaluation against our projected annual net income at that time, this error was previously reported as an out-of-period 
adjustment in the three months ended March 31, 2012;
the misapplication of accounting guidance requiring that we recognize loss allocations to a noncontrolling interest holder in 
a consolidated real estate joint venture associated with decreases in such holder's claim on the book value of the joint 
venture’s assets, despite the fact that the real estate held by the joint venture was under development and the joint venture 
had no underlying losses. The effect of this error was an understatement of losses attributable to noncontrolling interests in 
other consolidated entities of $1.8 million for the nine months ended September 30, 2012 and $1.4 million for the year 
ended December 31, 2011; and
the misapplication of accounting guidance pertaining to our reporting for a noncontrolling interest in a consolidated real 
estate joint venture formed in March 2010 for which the holder of such interest has the right to require us to acquire the 
interest at fair value. Accounting guidance requires that this noncontrolling interest be classified outside of permanent 
equity and reported at fair value as of the end of each reporting period, with changes in such fair value reported as equity 
transactions with no impact to net income or comprehensive income. This error resulted in an overstatement of equity and 
offsetting understatement of the line entitled “redeemable noncontrolling interest” in the mezzanine section of our 
consolidated balance sheet of $8.9 million as of December 31, 2011. This error had no effect on our consolidated statements 
of operations, including our reported net income (losses) or earnings per share. 

With respect to the errors in the first two bullets above, we assessed the materiality of these errors on the financial statements in 
connection with previously filed periodic reports, in accordance with ASC 250 (SEC’s Staff Accounting Bulletin No. 99, 
“Materiality”), and concluded at such time that the errors were not material to any prior annual or interim periods.  In assessing 
the cumulative effect of all such errors, we have since concluded that correction of the errors in 2012 could be considered 
material to our 2012 net income. Accordingly, in accordance with ASC 250 (SEC Staff Accounting Bulletin No. 108, 
“Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements,”), 
the financial statements as of, and for the year ended, December 31, 2011 have been revised. We will revise amounts pertaining 
to each of the 2012 calendar quarters from January 1, 2012 through September 30, 2012 in future quarterly filings on Form 10-
Q. The following are selected line items from our financial statements as of, and for the year ended, December 31, 2011
illustrating the affect of adjustments to revise the financial statements (the “As Previously Reported” columns include the effects
of other reclassifications and retrospective changes in presentation discussed below)(in thousands):

Prepaid expenses and other assets
Accounts payable and accrued expenses
Redeemable noncontrolling interest
Additional paid-in capital
Cumulative distributions in excess of net income

Noncontrolling interests in common units in the 

Operating Partnership

Noncontrolling interests in other consolidated entities

Consolidated Balance Sheet as of December 31, 2011

As Previously
Reported

$

$

87,619
96,425
—
1,452,393
(532,288)

55,281
18,559

F-11

Adjustment

As Revised

(3,969) $
(711)
8,908
(1,315)
(1,753)

83,650
95,714
8,908
1,451,078
(534,041)

(98)
(9,000)

55,183
9,559

 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

General, administrative and leasing expenses
Income tax benefit
Net loss
Net loss attributable to noncontrolling interests in 

common units in the Operating Partnership
Net (income) loss attributable to noncontrolling 

interests in other consolidated entities

Net loss attributable to Corporate Office Properties 

Trust

Net loss attributable to Corporate Office Properties 

Trust common shareholders

Basic and diluted earnings per common share:

Loss from continuing operations

$
$
$

$

$

$

$

$

Net loss attributable to COPT common shareholders $

Reclassifications

Consolidated Statements of Operations for the

Year Ended December 31, 2011

As Previously
Reported

Adjustment

As Revised

$
31,025
$
10,679
(124,318) $

(711) $
(3,969) $
(3,258) $

30,314
6,710
(127,576)

8,341

$

98

(1,038) $

1,407

$

$

8,439

369

(117,675) $

(1,753) $

(119,428)

(133,777) $

(1,753) $

(135,530)

(1.29) $
(1.94) $

(0.02) $
(0.03) $

(1.31)
(1.97)

We reclassified certain amounts from prior periods to conform to the current period presentation of our consolidated 
financial statements with no effect on previously reported net income or equity.  Included among these reclassifications are 
retrospective changes in the presentation of:

•

•

•

our preferred shares of beneficial interest; these shares are reported on our consolidated balance sheets at their liquidation 
preference value after having been reported at par value in our 2011 Annual Report on Form 10-K;
costs expensed in connection with properties not in operations; these costs are included in the line on our consolidated 
statements of operations entitled “business development expenses and land carry costs,” after having been included in 
property operating expenses in our 2011 Annual Report on Form 10-K; and
costs expensed in connection with marketing space for lease to prospective tenants; these costs are included in the line on 
our consolidated statements of operations entitled “general, administrative and leasing expenses,” after having been included 
in property operating expenses in our 2011 Annual Report on Form 10-K.

Use of Estimates in the Preparation of Financial Statements

We make estimates and assumptions when preparing financial statements under generally accepted accounting principles 

(“GAAP”). These estimates and assumptions affect various matters, including:

•
•
•

the reported amounts of assets and liabilities in our consolidated balance sheets at the dates of the financial statements; 
the disclosure of contingent assets and liabilities at the dates of the financial statements; and 
the reported amounts of revenues and expenses in our consolidated statements of operations during the reporting periods.

Significant estimates are inherent in the presentation of our financial statements in a number of areas, including the 

evaluation of the collectability of accounts and notes receivable, the allocation of property acquisition costs, the determination of 
estimated useful lives of assets, the determination of lease terms, the evaluation of impairment of long-lived assets, the amount 
of revenue recognized relating to tenant improvements and the level of expense recognized in connection with share-based 
compensation. Actual results could differ from these and other estimates.

Acquisitions of Properties

Upon completion of property acquisitions, we allocate the purchase price to tangible and intangible assets and liabilities 
associated with such acquisitions based on our estimates of their fair values. We determine these fair values by using market 

F-12

 
 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

data and independent appraisals available to us and making numerous estimates and assumptions. We allocate property 
acquisitions to the following components:

•

•

•

•

•

properties based on a valuation performed under the assumption that the property is vacant upon acquisition (the “if vacant 
value”). The if-vacant value is allocated between land and buildings or, in the case of properties under development, 
construction in progress. We also allocate additional amounts to properties for in-place tenant improvements based on our 
estimate of improvements per square foot provided under market leases that would be attributable to the remaining non-
cancellable terms of the respective leases;
above- and below-market lease intangible assets or liabilities based on the present value (using an interest rate which reflects 
the risks associated with the leases acquired) of the difference between: (1) the contractual amounts to be received pursuant 
to the in-place leases; and (2) our estimate of fair market lease rates for the corresponding space, measured over a period 
equal to the remaining non-cancelable term of the lease. The capitalized above- and below-market lease values are 
amortized as adjustments to rental revenue over the remaining non-cancellable terms of the respective leases;
in-place lease value based on our estimates of: (1) the present value of additional income to be realized as a result of leases 
being in place on the acquired properties; and (2) costs to execute similar leases.  Our estimate of additional income to be 
realized includes carrying costs, such as real estate taxes, insurance and other operating expenses, and revenues during the 
expected lease-up periods considering current market conditions.  Our estimate of costs to execute similar leases includes 
leasing commissions, legal and other related costs; 
tenant relationship value based on our evaluation of the specific characteristics of each tenant's lease and our overall 
relationship with that respective tenant.  Characteristics we consider in determining these values include the nature and 
extent of our existing business relationships with the tenant, growth prospects for developing new business with the tenant, 
the tenant's credit quality and expectations of lease renewals, among other factors; and
above- and below- market cost arrangements (such as real estate tax treaties or above- or below- market ground leases) 
based on the present value of the expected benefit from any such arrangements in place on the property at the time of 
acquisition.

Properties

We report properties to be developed or held and used in operations at our depreciated cost, reduced for impairment losses.

The preconstruction stage of the development or redevelopment of an operating property includes efforts and related costs to 
secure land control and zoning, evaluate feasibility and complete other initial tasks which are essential to development. We
capitalize interest expense, real estate taxes and direct and indirect project costs (including related compensation and other 
indirect costs) associated with properties, or portions thereof, undergoing construction, development and redevelopment 
activities. We continue to capitalize these costs while construction, development or redevelopment activities are underway until 
a property becomes “operational,” which occurs upon the earlier of when leases commence or one year after the cessation of 
major construction activities. When leases commence on portions of a newly-constructed or redeveloped property in the period 
prior to one year from the cessation of major construction activities, we consider that property to be “partially operational.”
When a property is partially operational, we allocate the costs associated with the property between the portion that is 
operational and the portion under construction. We start depreciating newly-constructed and redeveloped properties as they 
become operational.

Most of our leases involve some form of improvements to leased space. When we are required to provide improvements 
under the terms of a lease, we determine whether the improvements constitute landlord assets or tenant assets. We capitalize the 
cost of the improvements when we deem the improvements to be landlord assets.  In determining whether improvements 
constitute landlord or tenant assets, we consider numerous factors, including: whether the improvements are unique to the tenant 
or reusable by other tenants; whether the tenant is permitted to alter or remove the improvements without our consent or without 
compensating us for any lost fair value; whether the ownership of the improvements remains with us or remains with the tenant 
at the end of the lease term; and whether the economic substance of the lease terms is properly reflected.

We depreciate our fixed assets using the straight-line method over their estimated useful lives as follows:

Buildings and building improvements
Land improvements
Tenant improvements on operating properties
Equipment and personal property

Estimated Useful Lives

10-40 years
10-20 years
Related lease term
3-10 years

F-13

Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

We assess each of our operating properties for impairment quarterly using cash flow projections and estimated fair values 

that we derive for each of the properties.  We update the leasing and other assumptions used in these projections regularly,
paying particular attention to properties that have experienced chronic vacancy or face significant market challenges.  We review 
our plans and intentions for our development projects and land parcels quarterly.  Each quarter, we also review the 
reasonableness of changes in our estimated operating property fair values from amounts estimated in the prior quarter.  If events 
or changes in circumstances indicate that the carrying values of certain operating properties, properties in development or land 
held for future development may be impaired, we perform a recovery analysis for such properties.  For long-lived assets to be 
held and used, we analyze recoverability based on the estimated undiscounted future cash flows expected to be generated from 
the operations and eventual disposition of the assets over, in most cases, a ten-year holding period.  If we believe there is a 
significant possibility that we might dispose of the assets earlier, we analyze recoverability using a probability weighted analysis 
of the estimated undiscounted future cash flows expected to be generated from the operations and eventual disposition of the 
assets over the various possible holding periods.  If the recovery analysis indicates that the carrying value of a tested property is 
not recoverable from estimated future cash flows, it is written down to its estimated fair value and an impairment loss is 
recognized.  If and when our plans change, we revise our recoverability analyses to use the cash flows expected from the 
operations and eventual disposition of each asset using holding periods that are consistent with our revised plans.  Changes in 
holding periods may require us to recognize significant impairment losses. 

Property fair values are determined based on contract prices, indicative bids, discounted cash flow analyses or yield 

analyses. Estimated cash flows used in such analyses are based on our plans for the property and our views of market and 
economic conditions. The estimates consider items such as current and future rental rates, occupancies for the tested property 
and comparable properties, estimated operating and capital expenditures and recent sales data for comparable properties; most of 
these items are influenced by market data obtained from third party sources such as CoStar Group and real estate leasing and 
brokerage firms and our direct experience with the properties and their markets.

When we determine that a property is held for sale, we discontinue the recording of depreciation expense on the property 
and estimate the fair value, net of selling costs; if we then determine that the estimated fair value, net of selling costs, is less than 
the net book value of the property, we recognize an impairment loss equal to the difference and reduce the net book value of the 
property.

When we sell an operating property, or determine that an operating property is held for sale, and determine that we have no 

significant continuing involvement in such property, we classify the results of operations for such property as discontinued 
operations.  Interest expense that is specifically identifiable to properties included in discontinued operations is used in the 
computation of interest expense attributable to discontinued operations.

Sales of Interests in Real Estate

We recognize gains from sales of interests in real estate using the full accrual method, provided that various criteria relating 

to the terms of sale and any subsequent involvement by us with the real estate sold are met. We recognize gains relating to 
transactions that do not meet the requirements of the full accrual method of accounting when the full accrual method of 
accounting criteria are met.

Cash and Cash Equivalents

Cash and cash equivalents include all cash and liquid investments that mature three months or less from when they are 
purchased.  Cash equivalents are reported at cost, which approximates fair value. We maintain our cash in bank accounts in 
amounts that may exceed Federally insured limits at times. We have not experienced any losses in these accounts in the past and 
believe that we are not exposed to significant credit risk because our accounts are deposited with major financial institutions.

Investments in Marketable Securities

We classify marketable securities as trading securities when we have the intent to sell such securities in the near term, and 
classify other marketable securities as available-for-sale securities. We determine the appropriate classification of investments in 
marketable securities at the acquisition date and re-evaluate the classification at each balance sheet date. We report investments 
in marketable securities classified as trading securities at fair value, with unrealized gains and losses recognized through 
earnings. We report investments in marketable securities classified as available-for-sale securities at fair value, with net 

F-14

Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

unrealized gains or losses deferred to AOCL and realized gains and losses resulting from sales of such investments recognized 
through earnings.

Accounts and Deferred Rents Receivable and Mortgage and Other Investing Receivables

We maintain allowances for estimated losses resulting from the failure of our customers or borrowers to satisfy their 
payment obligations. We use judgment in estimating these allowances based primarily upon the payment history and credit 
status of the entities associated with the individual receivables. We write off these receivables when we believe the facts and 
circumstances indicate that continued pursuit of collection is no longer warranted. When we earn interest income in connection 
with receivables for which we have established allowances, we establish allowances in connection with such interest income that 
is unpaid. When cash is received in connection with receivables for which we have established allowances, we reduce the 
amount of losses recognized in connection with the receivables’ allowance.

Intangible Assets and Deferred Revenue on Real Estate Acquisitions

We capitalize intangible assets and deferred revenue on real estate acquisitions as described in the section above entitled 

“Acquisitions of Properties.” We amortize the intangible assets and deferred revenue as follows:

Above- and below-market leases
In-place lease value
Tenant relationship value

Above- and below-market cost arrangements
Market concentration premium

Amortization Period

Related lease terms
Related lease terms
Estimated period of time that tenant will lease 

space in property
Term of arrangements
40 years

We recognize the amortization of acquired above-market and below-market leases as adjustments to rental revenue. We
recognize the amortization of above- and below- market cost arrangements as adjustments to property operating expenses. We
recognize the amortization of other intangible assets on property acquisitions as amortization expense.

Deferred Leasing and Financing Costs, Net

We defer costs incurred to obtain new tenant leases or extend existing tenant leases, including related compensation costs.

We amortize these costs evenly over the lease terms. When tenant leases are terminated early, we expense any unamortized 
deferred leasing costs associated with those leases over the shortened term of the lease.

We defer costs of financing arrangements and recognize these costs as interest expense over the related loan terms on a 

straight-line basis, which approximates the amortization that would occur under the effective interest method of amortization.
We expense any unamortized loan costs when loans are retired early.

Noncontrolling Interests

Our consolidated noncontrolling interests are comprised of interests in our Operating Partnership and consolidated real 
estate joint ventures. We evaluate whether noncontrolling interests are subject to redemption features outside of our control.  For 
noncontrolling interests that are currently redeemable or deemed probable to eventually become redeemable, we classify such 
interests as redeemable noncontrolling interests in the mezzanine section of our consolidated balance sheets; we adjust these 
interests each period to the greater of their fair value or carrying amount (initial amount as adjusted for allocations of income and 
losses and future contributions and distributions), with a corresponding offset to additional paid-in capital on our consolidated 
balance sheets, and only recognize reductions in such interests to the extent of their carrying amount.  Our other noncontrolling 
interests are reported in the equity section of our consolidated balance sheets. The amounts reported for noncontrolling interests 
on our consolidated statements of operations represent the portion of these entities’ income or losses not attributable to us.

F-15

Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

Common units of the Operating Partnership are substantially similar economically to our common shares.  Common units 

not owned by us are also exchangeable into our common shares, subject to certain conditions. 

The Operating Partnership has 352,000 Series I Preferred Units issued to an unrelated party that have an aggregate liquidation
preference of $8.8 million ($25.00 per unit), plus any accrued and unpaid distributions of return thereon (as described below), and
may be redeemed for cash by the Operating Partnership at our option any time after September 22, 2019. The owner of these units
is entitled to a priority annual cumulative return equal to 7.5% of their liquidation preference through September 22, 2019; the
annual cumulative preferred return increases for each subsequent five-year period, subject to certain maximum limits. These units
are convertible into common units on the basis of 0.5 common units for each Series I Preferred Unit; the resulting common units
would then be exchangeable for common shares in accordance with the terms of the Operating Partnership's agreement of limited
partnership.

The table below sets forth activity in our redeemable noncontrolling interest (in thousands):

Beginning balance
Net loss attributable to noncontrolling interest
Adjustment to arrive at fair value of interest
Ending balance

Revenue Recognition

Year Ended December 31,

2012

2011

$

$

8,908
(2,565)
3,955
10,298

$

$

9,000
(1,407)
1,315
8,908

We recognize minimum rents, net of abatements, on a straight-line basis over the non-cancelable term of tenant leases 
(including periods under bargain renewal options). The non-cancelable term of a lease includes periods when a tenant: (1) may 
not terminate its lease obligation early; or (2) may terminate its lease obligation early in exchange for a fee or penalty that we 
consider material enough such that termination would not be probable. We report the amount by which our minimum rental 
revenue recognized on a straight-line basis under leases exceeds the contractual rent billings associated with such leases as 
deferred rent receivable on our consolidated balance sheets. Amounts by which our minimum rental revenue recognized on a 
straight-line basis under leases are less than the contractual rent billings associated with such leases are included in deferred 
revenue associated with operating leases on our consolidated balance sheets.

In connection with a tenant's entry into, or modification of, a lease, if we make cash payments to, or on behalf of, the tenant 

for purposes other than funding the construction of landlord assets, we defer the amount of such payments as lease incentives.
We amortize lease incentives as a reduction of rental revenue over the term of the lease.

We recognize tenant recovery revenue in the same periods in which we incur the related expenses. Tenant recovery revenue 

includes payments from tenants as reimbursement for property taxes, utilities and other property operating expenses.

We recognize fees received for lease terminations as revenue and write off against such revenue any (1) deferred rents 
receivable, and (2) deferred revenue, lease incentives and intangible assets that are amortizable into rental revenue associated 
with the leases; the resulting net amount is the net revenue from the early termination of the leases. When a tenant's lease for 
space in a property is terminated early but the tenant continues to lease such space under a new or modified lease in the property,
the net revenue from the early termination of the lease is recognized evenly over the remaining life of the new or modified lease 
in place on that property.

We recognize fees for services provided by us once services are rendered, fees are determinable and collectability is assured.

We recognize revenue under construction contracts using the percentage of completion method when the revenue and costs for 
such contracts can be estimated with reasonable accuracy; when these criteria do not apply to a contract, we recognize revenue 
on that contract using the completed contract method.  Under the percentage of completion method, we recognize a percentage 
of the total estimated revenue on a contract based on the cost of services provided on the contract as of a point in time relative to 
the total estimated costs on the contract.

F-16

Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

Interest Rate Derivatives

Our primary objectives in using interest rate derivatives are to add stability to interest expense and to manage exposure to 

interest rate movements. To accomplish this objective, we primarily use interest rate swaps as part of our interest rate risk 
management strategy.  Interest rate swaps designated as cash flow hedges involve the receipt of variable-rate amounts from a 
counterparty in exchange for our making fixed-rate payments over the life of the agreements without exchange of the underlying 
notional amount.  Derivatives are used to hedge the cash flows associated with interest rates on existing debt as well as future 
debt. We recognize all derivatives as assets or liabilities in the balance sheet at fair value. We defer the effective portion of 
changes in fair value of the designated cash flow hedges to accumulated other comprehensive loss (“AOCL”) and reclassify such 
deferrals to interest expense as interest expense is recognized on the hedged forecasted transactions. We recognize the 
ineffective portion of the change in fair value of interest rate derivatives directly in interest expense. When an interest rate swap 
designated as a cash flow hedge no longer qualifies for hedge accounting, we recognize changes in fair value of the hedge 
previously deferred to AOCL, along with any changes in fair value occurring thereafter, through earnings. We do not use interest 
rate derivatives for trading or speculative purposes. We manage counter-party risk by only entering into contracts with major 
financial institutions based upon their credit ratings and other risk factors.

We use standard market conventions and techniques such as discounted cash flow analysis, option pricing models, 

replacement cost and termination cost in computing the fair value of derivatives at each balance sheet date.

Please refer to Note 11 for additional information pertaining to interest rate derivatives.

Expense Classification

We classify as property operations expense costs incurred for property taxes, ground rents, utilities, property management, 
insurance, repairs, exterior and interior maintenance and tenant revenue collection losses, as well as associated labor and indirect 
costs attributable to these costs.

We classify as general and administrative and leasing expenses costs incurred for corporate-level management, public 
company administration, asset management, leasing, investor relations, marketing and corporate-level insurance (including 
general business, director and officers and key man life) and leasing prospects, as well as associated labor and indirect costs 
attributable to these costs.

Share-Based Compensation

We issued two forms of share-based compensation: restricted common shares (“restricted shares”) and performance share 
units (“PSUs”). We also issued options to purchase common shares of beneficial interest (“options”) in prior years. We account 
for share-based compensation in accordance with authoritative guidance provided by the FASB that establishes standards for the 
accounting for transactions in which an entity exchanges its equity instruments for goods or services, focusing primarily on 
accounting for transactions in which an entity obtains employee services in share-based payment transactions. The guidance 
requires us to measure the cost of employee services received in exchange for an award of equity instruments based generally on 
the fair value of the award on the grant date; such cost is then recognized over the period during which the employee is required 
to provide service in exchange for the award.  No compensation cost is recognized for equity instruments for which employees 
do not render the requisite service. The guidance also requires that share-based compensation be computed based on awards that 
are ultimately expected to vest; as a result, future forfeitures of awards are estimated at the time of grant and revised, if 
necessary, in subsequent periods if actual forfeitures differ from those estimates.  If an award is voluntarily cancelled by an 
employee, we recognize the previously unrecognized cost associated with the original award on the date of such cancellation.
We capitalize costs associated with share-based compensation attributable to employees engaged in construction and 
development activities. 

When we adopted the authoritative guidance on accounting for share-based compensation, we elected to adopt the 
alternative transition method for calculating the tax effects of share-based compensation. The alternative transition method 
enabled us to use a simplified method to establishing the beginning balance of the additional paid-in capital pool related to the 
tax effects of employee share-based compensation, which was available to absorb tax deficiencies recognized subsequent to the 
adoption of this guidance.

F-17

Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

We compute the fair value of options using the Black-Scholes option-pricing model.  Under that model, the risk-free interest 

rate is based on the U.S. Treasury yield curve in effect at the time of grant. The expected option life is based on our historical 
experience of employee exercise behavior.  Expected volatility is based on historical volatility of our common shares of 
beneficial interest (“common shares”).  Expected dividend yield is based on the average historical dividend yield on our common 
shares over a period of time ending on the grant date of the options.

We compute the fair value of PSUs using a Monte Carlo model.  Under that model, the baseline common share value is 
based on the market value on the grant date. The risk-free interest rate is based on the U.S. Treasury yield curve in effect at the 
time of grant.  Expected volatility is based on historical volatility of our common shares.

Recent Accounting Pronouncements

We adopted guidance issued by the Financial Accounting Standards Board (“FASB”) effective January 1, 2012 related to the 

presentation of comprehensive income that requires us to present the total of comprehensive income, the components of net 
income and the components of other comprehensive income either in a single continuous statement of comprehensive income or 
in two separate but consecutive statements.  We adopted this guidance using retrospective application.  This guidance eliminates 
the option to present the components of other comprehensive income as part of the statement of equity.  Our adoption of this 
guidance did not affect our financial position, results of operations, cash flows or measurement of comprehensive income but did 
change the location of our disclosure pertaining to comprehensive income in our consolidated financial statements.

We adopted guidance issued by the FASB effective January 1, 2012 that amends measurement and disclosure requirements 
related to fair value measurements to improve consistency with International Financial Reporting Standards.  In connection with 
our adoption of this guidance, we made an accounting policy election to use an exception provided for in the guidance with 
respect to measuring counterparty credit risk for derivative instruments; this election enables us to continue to measure the fair 
value of groups of assets and liabilities associated with derivative instruments consistently with how market participants would 
price the net risk exposure at the measurement date.  Our adoption of this guidance did not affect our financial position, results of 
operations or cash flows but did result in additional disclosure pertaining to our fair value measurements.

We adopted guidance issued by the FASB effective January 1, 2012 relating to the testing of goodwill for impairment that 
permits us to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is 
less than its carrying amount as a basis for determining whether it is necessary to perform a quantitative impairment test.  This
guidance eliminates the requirement to calculate the fair value of a reporting unit unless the entity determines that it is more 
likely than not that its fair value is less than its carrying amount.  Our adoption of this guidance did not materially affect our 
consolidated financial statements or disclosures.

3. 

Fair Value Measurements

Accounting standards define fair value as the exit price, or the amount that would be received upon sale of an asset or paid 

to transfer a liability in an orderly transaction between market participants as of the measurement date. The standards also 
establish a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use 
of unobservable inputs by requiring that the most observable inputs be used when available.  Observable inputs are inputs 
market participants would use in valuing the asset or liability developed based on market data obtained from sources 
independent of us.  Unobservable inputs are inputs that reflect our assumptions about the factors market participants would use 
in valuing the asset or liability developed based upon the best information available in the circumstances. The hierarchy of 
these inputs is broken down into three levels: Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets 
or liabilities; Level 2 inputs include (1) quoted prices for similar assets or liabilities in active markets, (2) quoted prices for 
identical or similar assets or liabilities in markets that are not active and (3) inputs (other than quoted prices) that are observable 
for the asset or liability, either directly or indirectly; and Level 3 inputs are unobservable inputs for the asset or liability.
Categorization within the valuation hierarchy is based upon the lowest level of input that is most significant to the fair value 
measurement.

The assets held in connection with our non-qualified elective deferred compensation plan (comprised primarily of mutual 
funds and equity securities) and the corresponding liability to the participants are measured at fair value on a recurring basis on 
our consolidated balance sheet using quoted market prices, as are other marketable securities that we hold. The deferred 
compensation plan assets and other marketable securities are included in the line entitled restricted cash and marketable 
securities on our consolidated balance sheets. The offsetting liability associated with the deferred compensation plan is 

F-18

 
 
 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

adjusted to fair value at the end of each accounting period based on the fair value of the plan assets and reported in other 
liabilities on our consolidated balance sheets. The assets and corresponding liability of our non-qualified elective deferred 
compensation plan and other marketable securities that we hold are classified in Level 1 of the fair value hierarchy.

The fair values of our interest rate derivatives are determined using widely accepted valuation techniques, including 
discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the 
derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate market data and 
implied volatilities in such interest rates. While we determined that the majority of the inputs used to value our derivatives fall 
within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with our interest rate derivatives also 
utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default.  However, as of 
December 31, 2012, we assessed the significance of the impact of the credit valuation adjustments on the overall valuation of 
our derivatives and determined that these adjustments are not significant. As a result, we determined that our interest rate 
derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy.

At December 31, 2012 and 2011, we owned warrants to purchase 50,000 common shares in The KEYW Holding 
Corporation (“KEYW”) at an exercise price of $9.25 per share.  KEYW is an entity supporting the intelligence community's 
operations and transformation to Cyber Age mission by providing engineering services and integrated platforms that support the 
intelligence process. We acquired these warrants in March 2010 and began accounting for such warrants as derivatives in 
November 2010 when KEYW became a publicly-traded company. We compute the fair value of these warrants using the 
Black-Scholes option-pricing model.  Under that model, the risk-free interest rate is based on the U.S. Treasury yield curve in 
effect as of the valuation date. The expected life is based on the period of time until the expiration of the warrants.  Expected 
volatility is based on an average of the historical volatility of companies in KEYW's industry that we deem to be comparable.
Expected dividend yield is based on the dividend yield on KEYW's common shares as of the date of valuation. The warrants 
are classified in Level 2 of the fair value hierarchy.

In addition to the warrants in KEYW described above, we also owned 1.9 million shares, or approximately 7%, of KEYW's 

common stock at December 31, 2011 and 3.1 million shares, or approximately 12%, at December 31, 2010.  Our investment in 
these common shares had a fair value of $13.8 million at December 31, 2011 based on the closing price of KEYW's common 
stock on the NASDAQ Stock Market on that date and is included in the line entitled "restricted cash and marketable securities" 
on our consolidated balance sheet. We sold 1.2 million of these shares in 2011, resulting in $2.1 million in gain recognized.
We used the equity method of accounting for our investment in the common stock until the resignation of our then Chief 
Executive Officer from the Board of Directors of KEYW effective July 1, 2011, at which time we began accounting for our 
investment in KEYW's common stock as a trading marketable equity security to be reported at fair value, with unrealized gains 
and losses recognized through earnings. We sold our remaining 1.9 million shares in 2012 for $14.0 million. We recognized 
revenue from a lease with KEYW in one of our properties of $2.4 million in 2012, $780,000 in 2011 and $668,000 in 2010.

As discussed further in Note 6, our partner in a real estate joint venture has the right to require us to acquire its interest at 

fair value beginning in March 2020; accordingly, we classify the fair value of our partner’s interest as a redeemable 
noncontrolling interest in the mezzanine section of our consolidated balance sheet. We determine the fair value of the interest 
based on unobservable inputs after considering the assumptions that market participants would make in pricing the interest. We
apply a discount rate to the estimated future cash flows allocable to our partner from the properties underlying the joint venture.
Estimated cash flows used in such analyses are based on our plans for the properties and our views of market and economic 
conditions, and consider items such as current and future rental rates, occupancies for the properties and comparable properties 
and estimated operating and capital expenditures.  In determining the fair value of our partner’s interest, we used a discount rate 
of 15.6%, which factored in risk appropriate to the level of future property development expected to be undertaken by the joint 
venture; a significant increase (decrease) in the discount rate used in determining the fair value would result in a significantly 
(lower) higher fair value.  Given our reliance on the unobservable inputs, the valuations are classified in Level 3 of the fair 
value hierarchy.

F-19

 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

Recurring Fair Value Measurements

The tables below set forth our financial assets and liabilities that are accounted for at fair value on a recurring basis as of 
December 31, 2012 and 2011 and the hierarchy level of inputs used in measuring their respective fair values under applicable 
accounting standards (in thousands):

Description
December 31, 2012:
Assets:

Marketable securities in deferred compensation plan (1)

Mutual funds
Common stocks
Other

Common stock (1)
Warrants to purchase common shares in KEYW (2)

Assets
Liabilities:

Deferred compensation plan liability (3)
Interest rate derivatives

Liabilities
Redeemable noncontrolling interest

December 31, 2011:
Assets:

Marketable securities in deferred compensation plan (1)

Mutual funds
Common stocks
Other

Common stock (1)
Interest rate derivative (2)
Warrants to purchase common shares in KEYW (2)

Assets
Liabilities:

Deferred compensation plan liability (3)
Interest rate derivatives

Liabilities
Redeemable noncontrolling interest

Quoted Prices in
Active Markets for
Identical Assets
(Level 1)

Significant Other
Observable Inputs
(Level 2)

Significant
Unobservable Inputs
(Level 3)

Total

$

$

$

$
$

$

$

$

$
$

$

$

$

$

$

$

6,275
298
203
809
—
7,585

6,776
—
6,776

$
— $

5,878
909
801
13,928
—
—
21,516

7,588
—
7,588

$
— $

— $
—
—
—
294
294

$

— $

6,185
6,185

$
— $

— $
—
—
—
716
125
841

$

— $

30,863
30,863

$
— $

— $
—
—
—
—
— $

— $
—
— $
$

10,298

— $
—
—
—

—
— $

— $
—
— $
$

8,908

6,275
298
203
809
294
7,879

6,776
6,185
12,961
10,298

5,878
909
801
13,928
716
125
22,357

7,588
30,863
38,451
8,908

(1)          Included in the line entitled “restricted cash and marketable securities” on our consolidated balance sheet.
(2)          Included in the line entitled “prepaid expenses and other assets” on our consolidated balance sheet.
(3)          Included in the line entitled “other liabilities” on our consolidated balance sheet.

The carrying values of cash and cash equivalents, restricted cash, accounts receivable, other assets (excluding mortgage 

loans receivable) and accounts payable and accrued expenses are reasonable estimates of their fair values because of the short 
maturities of these instruments.  We estimated the fair values of our mortgage loans receivable as discussed in Note 9 based on 
the discounted estimated future cash flows of the loans (categorized within Level 3 of the fair value hierarchy); the discount 
rates used approximate current market rates for loans with similar maturities and credit quality, and the estimated cash 
payments include scheduled principal and interest payments.  For our disclosure of debt fair values in Note 10 to the 
consolidated financial statements, we estimated the fair value of our exchangeable senior notes based on quoted market prices 
for publicly-traded debt (categorized within Level 2 of the fair value hierarchy) and estimated the fair value of our other debt 
based on the discounted estimated future cash payments to be made on such debt (categorized within Level 3 of the fair value 
hierarchy); the discount rates used approximate current market rates for loans, or groups of loans, with similar maturities and 
credit quality, and the estimated future payments include scheduled principal and interest payments.  Fair value estimates are 

F-20

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

made at a specific point in time, are subjective in nature and involve uncertainties and matters of significant judgment.  
Settlement of such fair value amounts may not be possible and may not be a prudent management decision.

For additional fair value information, please refer to Note 9 for mortgage loans receivable, Note 10 for debt and Note 11

for interest rate derivatives.

Nonrecurring Fair Value Measurements

We recognized impairment losses on certain properties and other assets associated with such properties in 2011 and 2012.  
Accordingly, certain properties and related assets were adjusted to fair value.  The table below sets forth the fair value hierarchy 
of the valuation techniques used by us in determining such fair values for the year ended December 31, 2012 (dollars in 
thousands):

Quoted Prices in
Active Markets for
Identical Assets
(Level 1)

Significant Other
Observable Inputs
(Level 2)

Significant
Unobservable
Inputs
(Level 3)

Impairment
Losses
Recognized in
2012 (1)

Total

Description
Assets (2):

Properties, net

$

— $

— $

379,684

$ 379,684

$

62,702

(1) Represents impairment losses, excluding exit costs incurred of $4.2 million in 2012.
(2) Reflects balance sheet classifications of assets at time of fair value measurement, excluding the effect of held for sale classifications.

The table below sets forth quantitative information about significant unobservable inputs used for the Level 3 fair value 
measurements reported above (dollars in thousands):

Description
Properties on which

impairment losses were
recognized

Fair Value on 
Measurement Date

Valuation Technique

 Unobservable Input

Range (Weighted Average)

$

379,684

indicative of value

Bid for properties

Contract of sale
Discounted cash flow Discount rate

Indicative bid (1)
Contract price (1)

(1)
(1)
10.0% to 11.0% (10.4%)

Terminal

capitalization rate

8.7% to 10.0% (8.9%)

Market rent growth

rate

Expense growth rate
Yield
Market rent rate
Leasing costs

3.0% (2)
3.0% (2)
12% (2)
$8.50 per square foot (2)
$20.00 per square foot (2)

Yield Analysis

(1) These fair value measurements were developed by third party sources, subject to our corroboration for reasonableness.
(2) Only one value applied for this unobservable input.

The table below sets forth the fair value hierarchy of the valuation techniques used by us in determining such fair values for the 
year ended December 31, 2011 (dollars in thousands):

Description
Assets (1):

Quoted Prices in
Active Markets for
Identical Assets
(Level 1)

Significant Other
Observable Inputs
(Level 2)

Significant
Unobservable
Inputs
(Level 3)

Impairment
Losses
Recognized in
2011

Total

Properties, net
Prepaid and other assets

$

— $
—

— $
—

320,894
163

$ 320,894
163

$

150,093
928

(1) Reflects balance sheet classifications of assets at time of fair value measurement, excluding the effect of held for sale classifications.

F-21

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

4.

Concentration of Rental Revenue

We derived large concentrations of our revenue from real estate operations from certain tenants during the periods set forth 

in our consolidated statements of operations. The following table summarizes the percentage of our rental revenue (which 
excludes tenant recoveries and other real estate operations revenue) earned from (1) individual tenants that accounted for at 
least 5% of our rental revenue from continuing and discontinued operations and (2) the aggregate of the five tenants from which 
we recognized the most rental revenue in the respective years: 

United States Government
Northrop Grumman Corporation (1)
Booz Allen Hamilton, Inc.
Computer Sciences Corporation
Five largest tenants

For the Years Ended December 31,

2012

2011

2010

18%
7%
6%
5%
39%

17%
8%
6%
N/A
38%

16%
9%
5%
N/A
35%

(1) Includes affiliated organizations and agencies and predecessor companies.

We also derived in excess of 90% of our construction contract revenue from the United States Government in each of the 

years set forth on the consolidated statements of operations.

In addition, we derived large concentrations of our total revenue from real estate operations (defined as the sum of rental 

revenue and tenant recoveries and other real estate operations revenue) from certain geographic regions. These concentrations 
are set forth in the segment information provided in Note 15.  Several of these regions, including the Baltimore/Washington
Corridor, Northern Virginia, Washington, DC - Capitol Riverfront, St. Mary's & King George Counties, Greater Baltimore, 
Maryland (“Greater Baltimore”) and Suburban Maryland, are within close proximity to each other, and all but two of our 
regions with real estate operations (San Antonio, Texas (“San Antonio”) and Colorado Springs, Colorado (“Colorado Springs”)) 
are located in the Mid-Atlantic region of the United States.

5.

Properties, net

Operating properties, net consisted of the following (in thousands): 

Land
Buildings and improvements
Less: accumulated depreciation
Operating properties, net

December 31,

$

2012
427,766
2,725,875
(555,975)
$ 2,597,666

$

2011
472,483
2,801,252
(559,679)
$ 2,714,056

Projects we had in development or held for future development consisted of the following (in thousands): 

Land
Construction in progress, excluding land
Projects in development or held for future development

2012 Dispositions and Impairments

December 31,

2012
236,324
329,054
565,378

$

$

2011
229,833
409,086
638,919

$

$

 In April 2011, we completed a review of our portfolio and identified a number of properties that are no longer closely 
aligned with our strategy, and our Board of Trustees approved a plan by Management to dispose of some of these properties 
(the “Strategic Reallocation Plan”).  In December 2011, we identified additional properties for disposal, and our Board of 
Trustees approved a plan by management to increase the scope of the Strategic Reallocation Plan to include the disposition of 

F-22

 
 
 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

additional properties.  We completed dispositions of the following properties in 2012 primarily in connection with the Strategic 
Reallocation Plan (dollars in thousands):

Location

Project Name
White Marsh Portfolio Disposition White Marsh, Maryland
1101 Sentry Gateway
222 and 224 Schilling Circle
15 and 45 West Gude Drive
11800 Tech Road
400 Professional Drive
July 2012 Portfolio Disposition

San Antonio, Texas
Hunt Valley, Maryland
Rockville, Maryland
Silver Spring, Maryland
Gaithersburg, Maryland
Baltimore/Washington
Corridor and Greater
Baltimore

Date of Sale
1/30/2012
1/31/2012
2/10/2012
5/2/2012
6/14/2012
7/2/2012
7/24/2012

Number
of
Buildings
5
1
2
2
1
1
23

Total
Rentable
Square Feet
163,000
95,000
56,000
231,000
240,000
130,000
1,387,000

Transaction
Value
$ 19,100
13,500
4,400
49,107
21,300
16,198
161,901

Gain on
Disposition
2,445
$
1,739
102
—
—
—
16,900

35

2,302,000

$ 285,506

$ 21,186

Each of the above dispositions represent property sales except for 400 Professional Drive, the disposition of which was 
completed in connection with a debt extinguishment, as described further below. We also had dispositions of non-operating 
properties during the year ended December 31, 2012 for aggregate transaction values totaling $28.1 million; in addition to the 
gain on sales reflected above, we also recognized impairment losses on certain of these sales that are disclosed below.

On July 2, 2012, the mortgage lender on a $15 million nonrecourse mortgage loan that was secured by our 400 Professional 

Drive property accepted a deed in lieu of foreclosure on the property. As a result, we transferred title to the property to the 
mortgage lender and we were relieved of the debt obligation plus accrued interest. As of the transfer date, the property had an 
estimated fair value of $11 million.  Upon completion of this transfer, we recognized a gain on extinguishment of debt of $3.7
million, representing the difference between the mortgage loan and interest payable extinguished over the carrying value of the 
property transferred as of the transfer date, which included the effect of previous impairments taken.

We recognized impairment losses in 2012 in connection with the following:

•

•

•

our office properties and developable land in Greater Philadelphia, Pennsylvania.  Our Board of Trustees approved a plan 
by Management to shorten the holding period for these properties because they no longer meet our strategic investment 
criteria. We determined that the carrying amounts of these properties will not likely be recovered from the cash flows from 
the operations and sales of such properties over the likely remaining holding period. Accordingly, we recognized aggregate 
non-cash impairment losses of $46.1 million in 2012 for the amounts by which the carrying values of the properties 
exceeded their respective estimated fair values. These losses contemplate our expectation that we will incur future cash 
expenditures of approximately $25 million to complete the redevelopment of certain of these properties;
the Strategic Reallocation Plan of $19.0 million ($23.7 million classified as discontinued operations and including $4.2
million in exit costs), including $6.9 million pertaining to certain properties in Colorado Springs, Colorado classified as 
held for sale at December 31, 2012 and approximately $5.1 million related to our disposition of an additional property from 
which the cash flows were not sufficient to recover its carrying value; and 
construction costs incurred on a property held for future development of $1.9 million.

The table below sets forth the impairment losses and exit costs recognized in 2012 by period of recognition and by property 

classification (in thousands):

Operating properties
Non-operating properties
Total

3/31/2012
11,833
(5,246)
6,587

$

$

Three Months Ended
9/30/2012
$ 55,829
—
$ 55,829

6/30/2012
2,354
$
—
2,354

$

12/31/2012
247
$
1,893
2,140

$

Total
$ 70,263
(3,353)
$ 66,910

F-23

 
 
 
 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

2012 Acquisition

On July 11, 2012, we acquired 13857 McLearen Road, a 202,000 square foot office property in Herndon, Virginia that was 
100% leased, for $48.3 million. The table below sets forth the allocation of the acquisition costs of this property (in thousands):

Land, operating properties
Building and improvements
Intangible assets on real estate acquisitions
Total assets
Below-market leases
Total acquisition cost

$

$

3,507
30,177
14,993
48,677
(369)
48,308

Intangible assets recorded in connection with the above acquisition included the following (dollars in thousands):

Tenant relationship value
In-place lease value
Above-market leases

 Weighted
Average
Amortization
Period (in Years)
10
5
5
7

$

$

7,472
7,109
412
14,993

We expensed $229,000 in operating property acquisition costs in 2012 that are included in business development expenses and 
land carry costs on our consolidated statements of operations.

2012 Construction Activities

During 2012, we placed into service an aggregate of 371,000 square feet in four newly constructed office properties, 
including two properties in the Baltimore/Washington Corridor, one in Greater Baltimore and one in Northern Virginia. As of 
December 31, 2012, we had 11 office properties under construction, or for which we were contractually committed to construct, 
that we estimate will total 1.4 million square feet upon completion, including four in the Baltimore/Washington Corridor, four
in Huntsville, Alabama and three in Northern Virginia. We also had redevelopment underway on two office properties in 
Greater Philadelphia that we estimate will total 297,000 square feet upon completion.

F-24

Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

2011 Dispositions and Impairment

As discussed above, we implemented the Strategic Reallocation Plan in 2011 to dispose of office properties and land that 
are no longer closely aligned with our strategy. We determined that the carrying amounts of certain of the properties included 
in the Strategic Reallocation Plan (the “Impaired Properties”) were not likely to be recovered from the cash flows from the 
operations and sales of such properties over the shorter holding periods. Accordingly, we recognized aggregate non-cash 
impairment losses in 2011 of $122.5 million (including $67.5 million classified as discontinued operations and excluding $4.8
million in related income tax benefit) for the amounts by which the carrying values of the Impaired Properties exceeded their 
respective estimated fair values. We completed the sale of the following properties under the Strategic Reallocation Plan in 
2011 (dollars in thousands):

Project Name

Location

Date of Sale

1344 & 1348 Ashton Road and 

1350 Dorsey Road
216 Schilling Circle
Towson Portfolio
11011 McCormick Road
10001 Franklin Square Drive

Rutherford Business Center 

Portfolio

Hanover, Maryland
Hunt Valley, Maryland
Towson, Maryland
Hunt Valley, Maryland
White Marsh, Maryland

5/24/2011
8/23/2011
9/29/2011
11/1/2011
12/13/2011

Woodlawn, Maryland

12/15/2011

Number of
Buildings

Total
Rentable
Square Feet

Transaction
Value

Gain on
Disposition

3
1
4
1
1

13
23

$

39,000
36,000
179,000
57,000
218,000

$

3,800
4,700
16,000
3,450
16,250

365,000
894,000

$

32,460
76,660

$

150
175
1,134
822
305

2,221
4,807

On February 15 and 17, 2011, the United States Army (the “Army”) provided us disclosures regarding the past testing and 

use of tactical defoliants/herbicides at a property we owned and subsequently disposed of in Cascade, Maryland that was 
formerly an Army base known as Fort Ritchie (“Fort Ritchie”).  Upon receipt of these disclosures, we commenced a review of 
our development plans and prospects for the property. We believed that these disclosures by the Army were likely to cause 
further delays in the resolution of certain existing litigation related to the property, and that they also increased the level of 
uncertainty as to our ultimate development rights at the property and future residential and commercial demand for the property.
We analyzed various possible outcomes and resulting cash flows expected from the operations and ultimate disposition of the 
property. After determining that the carrying amount of the property was not likely to be recovered from those cash flows, we 
recognized a non-cash impairment loss of $27.7 million in March 2011 for the amount by which the carrying value of the 
property exceeded its estimated fair value.

In 2011, we also recognized additional impairment losses of $803,000 on goodwill associated with operating properties.

The table below sets forth the impairment losses recognized in 2011 by period of recognition and by property classification

(in thousands):

Non-operating properties
Operating properties
Total

Three Months Ended

3/31/2011
27,742
—
27,742

$

$

6/30/2011
$ 13,574
31,031
$ 44,605

12/31/2011
$ 39,193
39,481
$ 78,674

Total
$ 80,509
70,512
$ 151,021

F-25

Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

2011 Acquisition

On August 9, 2011, we acquired 310 The Bridge Street, a 138,000 square foot office property in Huntsville, Alabama that 

was 100% leased, for $33.4 million. The table below sets forth the allocation of the acquisition costs of this property (in 
thousands):

Land, operating properties
Building and improvements
Intangible assets on real estate acquisitions
Total acquisition cost

$

$

261
26,577
6,575
33,413

Intangible assets recorded in connection with the above acquisitions included the following (in thousands):

Tenant relationship value
In-place lease value
Above-market leases

 Weighted
Average
Amortization
Period (in Years)
8
3
3
6

$

$

3,187
2,904
484
6,575

We expensed $156,000 in 2011 in connection with acquisitions of operating properties that are included in business 

development expenses on our consolidated statements of operations.

2011 Construction Activities

During 2011, we placed into service an aggregate of 566,000 square feet in seven newly constructed office properties, 
including three in the Baltimore/Washington Corridor, two in Greater Baltimore, one in San Antonio and one in St. Mary’s
County.

6.

Real Estate Joint Ventures

During the periods included herein, we had an investment in one unconsolidated real estate joint venture accounted for 
using the equity method of accounting.  Information pertaining to this joint venture investment is set forth below (dollars in 
thousands):

Investment Balance at (1)
December 31, 2012 December 31, 2011
$

Date
Acquired
(6,071) 9/29/2005

(6,420) $

Ownership
20%

Nature of
Activity
Operates 16 Buildings

Maximum Exposure
to Loss (2)

$

—

(1)   The carrying amount of our investment in this joint venture was lower than our share of the equity in the joint venture by $4.5 million at 
December 31, 2012 and $5.2 million at December 31, 2011 due to our deferral of gain on the contribution by us of real estate into the 
joint venture upon its formation and our discontinuance of the equity method effective October 2012, as discussed below.  A difference
will continue to exist to the extent the nature of our continuing involvement in the joint venture remains the same.

(2)   Derived from the sum of our investment balance and maximum additional unilateral capital contributions or loans required from us.  Not 
reported above are additional amounts that we and our partner are required to fund when needed by this joint venture; these funding 
requirements are proportional to our respective ownership percentages.  Also not reported above are additional unilateral contributions or 
loans from us, the amounts of which are uncertain, that we would be required to make if certain contingent events occur (see Note 20).

Net cash flows of the joint venture are distributed to the partners in proportion to their respective ownership interests. We
did not recognized fees from the joint venture for property management, construction and leasing services we provided in 2012, 
2011 and 2010.

F-26

 
 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

The following table sets forth condensed balance sheets for this unconsolidated real estate joint venture (in thousands):

Properties, net
Other assets
Total assets

Liabilities (primarily debt)
Owners’ equity

Total liabilities and owners’ equity

December 31,

2012
$ 58,460
4,376
$ 62,836

2011
$ 59,792
3,529
$ 63,321

$ 72,693
(9,857)
$ 62,836

$ 67,710
(4,389)
$ 63,321

The following table sets forth condensed statements of operations for this unconsolidated real estate joint venture (in 
thousands):

Revenues
Property operating expenses
Interest expense
Depreciation and amortization expense
Net loss

For the Years Ended December 31,

2012

2011

2010

$

$

$

7,316
(2,829)
(7,672)
(2,283)
(5,468) $

$

7,577
(3,673)
(3,913)
(2,463)
(2,472) $

8,405
(3,600)
(3,937)
(3,154)
(2,286)

We historically accounted for the investment in our one unconsolidated real estate joint venture using the equity method of 
accounting primarily because: (1) we share with our partner the power to direct the matters that most significantly impact the 
activities of the joint venture, including the management and operations of the properties and disposal rights with respect to 
such properties; and (2) our partner has the right to receive benefits and absorb losses that could be significant to the VIE
through its proportionately larger investment. We deferred gain in a prior period on our initial contribution of property to the 
joint venture due to certain guarantees described in Note 20, and we subsequently recognized losses in excess of our investment 
due to such guarantees and our intent to support the joint venture.  During the fourth quarter of 2012, the holder of mortgage 
debt encumbering all of the joint venture’s properties notified us of the debt’s default, initiated foreclosure proceedings and 
terminated our property management responsibilities; accordingly, we discontinued our application of the equity method to this 
investment effective in October 2012 due to our having neither the obligation nor intent to support the joint venture.

The table below sets forth information pertaining to our investments in consolidated real estate joint ventures at 

December 31, 2012 (dollars in thousands):

LW Redstone Company, LLC

M Square Associates, LLC

Arundel Preserve #5, LLC

Date
Acquired
3/23/2010

6/26/2007

7/2/2007

COPT-FD Indian Head, LLC

10/23/2006

MOR Forbes 2 LLC

12/24/2002

Nominal
Ownership
% at
12/31/2012
85%

50%

50%

75%

50%

Nature of Activity

Developing business park (2)

Operating two buildings and developing others (3)

Operating one building (4)

Holding land parcel (5)

Operating one building (6)

December 31, 2012 (1)
Encumbered
Assets

Total
Assets
$ 76,295

60,798

39,581

6,436

3,879

$

16,809

47,360

36,811

—

—

Total
Liabilities
12,990
$

43,149

17,722

16

96

(1) Excludes amounts eliminated in consolidation.
(2) This joint venture’s property is in Huntsville, Alabama.
(3) This joint venture’s properties are in College Park, Maryland (in the Suburban Maryland region).
(4) This joint venture’s property is in Hanover, Maryland (in the Baltimore/Washington Corridor).
(5) This joint venture’s property is in Charles County, Maryland.  In 2012, the joint venture exercised its option under a development agreement to require 
Charles County to repurchase the land parcel at its original acquisition cost.  Under the terms of the agreement with Charles County, the repurchase is 
expected to occur by August 2014.

(6) This joint venture’s property is in Lanham, Maryland (in the Suburban Maryland region).

$ 186,989

$

100,980

$

73,973

F-27

 
 
 
 
 
 
 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

With regard to our consolidated joint ventures:

•

•

•

•

•

For LW Redstone, LLC, we anticipate funding certain infrastructure costs (up to a maximum of $76.0 million) that we 
expect will be reimbursed by the City of Huntsville; as of December 31, 2012, we had advanced $33.3 million to the City 
to fund such costs (included in prepaid expenses and other assets on our consolidated balance sheet).  We also expect to 
fund additional development and construction costs through equity contributions to the extent that third party financing is 
not obtained.  Our partner was credited with a $9.0 million capital account upon formation and is not required to make any 
future equity contributions. While net cash flow distributions to the partners vary depending on the source of the funds 
distributed, cash flows are generally distributed as follows:
•

cumulative preferred returns on capital invested to fund the project’s infrastructure costs on a pro rata basis to us and 
our partner;
cumulative preferred returns on our capital invested to fund the project’s vertical construction;
return of our invested capital;
return of our partner’s capital;
any remaining residual 85% to us and 15% to our partner.

•
•
•
•
Our partner has the right to require us to acquire its interest for fair value beginning in March 2020; accordingly, we 
classify the fair value of our partner’s interest as redeemable noncontrolling interests in the mezzanine section of our 
consolidated balance sheet. We have the right to purchase our partner’s interest at fair value upon the earlier of five years 
following the project’s achievement of a construction commencement threshold of 4.4 million square feet or March 2040.
For M Square Associates, LLC, net cash flows of this entity will be distributed to the partners as follows: (1) member loans 
and accrued interest; (2) our preferred return and capital contributions used to fund infrastructure costs; (3) the partners' 
preferred returns and capital contributions used to fund all other costs, including the base land value credit, in proportion to 
the accrued returns and capital accounts; and (4) residual amounts distributed 50% to each member.
For Arundel Preserve #5, LLC, net cash flows will be distributed to the partners as follows: (1) member loans and accrued 
interest; (2) preferred returns in proportion to the partners' respective capital accounts; (3) repayment of any building 
operating reserves funded by us; and (4) residual cash flows in proportion to the partners' respective ownership interests.
For COPT-FD Indian Head, LLC, net cash flows will be distributed to the partners in proportion to their respective 
ownership interests.
For MOR Forbes 2 LLC, net cash flows will be distributed to the partners in proportion to their respective ownership 
interests.

We consolidate these real estate joint ventures because we have: (1) the power to direct the matters that most significantly 
impact the activities of the joint ventures, including development, leasing and management of the properties constructed by the 
VIEs; and (2) the right to receive returns on our fundings and, in many cases, the obligation to fund the activities of the ventures 
to the extent that third-party financing is not obtained, both of which could be potentially significant to the VIEs.

Our commitments and contingencies pertaining to our real estate joint ventures are disclosed in Note 20.

7.

Intangible Assets on Real Estate Acquisitions

Intangible assets on real estate acquisitions consisted of the following (in thousands): 

In-place lease value
Tenant relationship value
Above-market cost arrangements
Above-market leases
Market concentration premium

December 31, 2012

December 31, 2011

Gross
Carrying
Amount

134,964
46,828
12,416
8,925
1,333
204,466

$

$

Accumulated
Amortization
93,362
$
23,346
4,100
7,432
347
128,587

$

Net
 Carrying 
Amount

Gross
Carrying
Amount

$

$

41,602
23,482
8,316
1,493
986
75,879

$

$

151,361
45,940
12,416
10,118
1,333
221,168

Accumulated
Amortization
97,594
$
23,246
2,857
8,037
314
132,048

$

Net
Carrying
Amount

$

$

53,767
22,694
9,559
2,081
1,019
89,120

Amortization of the intangible asset categories set forth above totaled $21.4 million in 2012, $28.3 million in 2011 and $28.3
million in 2010. The approximate weighted average amortization periods of the categories set forth above follow: in-place 
lease value: seven years; tenant relationship value: eight years; above-market cost arrangements: 28 years; above-market leases: 
four years; and market concentration premium: 30 years. The approximate weighted average amortization period for all of the 

F-28

Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

categories combined is ten years.  Estimated amortization expense associated with the intangible asset categories set forth 
above for the next five years is: $14.4 million for 2013; $12.3 million for 2014; $10.6 million for 2015; $9.5 million for 2016; 
and $7.1 million for 2017. 

8.

Deferred Leasing and Financing Costs

Deferred leasing and financing costs, net consisted of the following (in thousands):

Deferred leasing costs
Deferred financing costs
Accumulated amortization
Deferred leasing and financing costs, net

9.

Prepaid Expenses and Other Assets

December 31,

2012
97,852
30,520
(68,420)
59,952

$

$

2011
96,140
44,159
(73,784)
66,515

$

$

Prepaid expenses and other assets consisted of the following (in thousands):

Mortgage and other investing receivables
Prepaid expenses
Furniture, fixtures and equipment, net
Deferred tax asset
Lease incentives
Other assets
Prepaid expenses and other assets

Mortgage and Other Investing Receivables

December 31,

2012
33,396
19,270
7,991
6,612
5,578
4,608
77,455

$

$

2011
27,998
20,035
10,177
6,923
5,233
13,284
83,650

$

$

Mortgage and other investing receivables consisted of the following (in thousands):

Notes receivable from City of Huntsville
Mortgage loans receivable

December 31,

2012
33,252
144
33,396

$

$

2011
17,741
10,257
27,998

$

$

Our notes receivable from the City of Huntsville funded infrastructure costs in connection with our LW Redstone Company,
LLC joint venture (see Note 6).  As of December 31, 2012, our mortgage loans receivable reflected above consisted of one loan 
secured by a property in Greater Baltimore.  We did not have an allowance for credit losses in connection with these receivables 
at December 31, 2012 or December 31, 2011.  The fair value of our mortgage and other investing receivables totaled $33.4
million at December 31, 2012 and $28.0 million at December 31, 2011.

Operating Notes Receivable

We had operating notes receivable due from tenants with terms exceeding one year totaling $271,000 at December 31,

2012 and $530,000 at December 31, 2011.  We carried allowances for estimated losses for most of these balances.

F-29

 
 
 
 
 
 
 
 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

10.

Debt

Our debt consisted of the following (dollars in thousands):

Maximum
 Availability at
December 31,
2012

Carrying Value at

December 31,
2012

December 31,
2011

Stated Interest Rates at
December 31, 2012

Scheduled Maturity
 Dates at
December 31, 2012

Mortgage and Other Secured Loans:

Fixed rate mortgage loans (1)

Variable rate secured loans

N/A $

948,414

$ 1,052,421

5.20% - 7.87% (2)

N/A

39,213

LIBOR + 2.25% (3)

2013-2034

2015

38,475

29,557

Other construction loan facilities

$

123,802

40,336

LIBOR + 1.95% to 2.75% (4)

2013-2015

Total mortgage and other secured loans

1,016,446

1,131,970

Revolving Credit Facility 

Term Loan Facilities 

Unsecured notes payable

4.25% Exchangeable Senior Notes

Total debt

800,000

770,000

N/A

N/A

—

662,000

LIBOR + 1.75% to 2.50%

September 1, 2014

770,000

1,788

230,934

400,000

LIBOR + 1.65% to 2.60% (5)

2015-2019

5,050

227,283

0% (6)

4.25%

2026

April 2030 (7)

$

2,019,168

$ 2,426,303

(1)   Several of the fixed rate mortgages carry interest rates that were above or below market rates upon assumption and therefore were 
recorded at their fair value based on applicable effective interest rates.  The carrying values of these loans reflect net unamortized 
premiums totaling $1.3 million at December 31, 2012 and $2.4 million at December 31, 2011.

(2) The weighted average interest rate on these loans was 6.01% at December 31, 2012.
(3)  The interest rate on the loan outstanding was 2.46% at December 31, 2012.
(4)  The weighted average interest rate on these loans was 2.66% at December 31, 2012.
(5)  The weighted average interest rate on these loans was 2.17% at December 31, 2012.
(6)   These notes carry interest rates that were below market rates upon assumption and therefore were recorded at their fair value based on 

applicable effective interest rates.  The carrying value of these notes reflects an unamortized discount totaling $873,000 at December 31,
2012 and $1.8 million at December 31, 2011.

(7) Refer to the paragraph below for descriptions of provisions for early redemption and repurchase of these notes.

Effective September 1, 2011, we entered into a credit agreement providing for an unsecured revolving credit facility (the 
“Revolving Credit Facility”) with a group of lenders for which J.P. Morgan Securities LLC and KeyBanc Capital Markets acted 
as join lead arrangers and joint book runners, KeyBank National Association acted as administrative agent and JPMorgan Chase 
Bank, N.A. and Bank of America, N.A. acted as co-syndication agents. The lenders’ aggregate commitment under the facility 
was $1.0 billion, with the ability for us to increase the lenders’ aggregate commitment to $1.5 billion, provided that there is no 
default under the facility and subject to the approval of the lenders.  Effective August 10, 2012, we exercised our right to reduce 
the lenders’ aggregate commitment under the facility from $1.0 billion to $800 million, with the ability for us to increase the 
lenders’ aggregate commitment to $1.3 billion, provided that there is no default under the facility and subject to the approval of 
the lenders. Amounts available under the facility are computed based on 60% of our unencumbered asset value, as defined in 
the agreement.  The facility matures on September 1, 2014, and may be extended by one year at our option, provided that there 
is no default under the facility and we pay an extension fee of 0.20% of the total availability of the facility.  The interest rate on 
the facility is based on LIBOR (customarily the 30-day rate) plus 1.75% to 2.50%, as determined by our leverage levels. The
facility also carries a quarterly fee that is based on the unused amount of the facility multiplied by a per annum rate of 0.25% to 
0.35%, as determined by the level of our unused amount. As of December 31, 2012, the maximum borrowing capacity under 
this facility totaled $800.0 million, of which $792.3 million was available.

Effective September 1, 2011, we entered into an unsecured term loan agreement with the same group of lenders as the 
Revolving Credit Facility under which we borrowed $400.0 million, with a right for us to borrow an additional $100.0 million,
provided that there is no default under the agreement. The term loan matures on September 1, 2015, and may be extended by 
one year at our option, provided that there is no default and we pay an extension fee of 0.20% of the total availability of the 
agreement. The variable interest rate on the term loan is based on LIBOR rate (customarily the 30-day rate) plus 1.65% to 
2.40%, as determined by our leverage levels.

Upon entry into the Revolving Credit Facility and term loan on September 1, 2011, we repaid and extinguished our 
previously existing Revolving Credit Facility and Revolving Construction Facility and used most of the remaining proceeds to 

F-30

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

repay two variable rate secured loans totaling $270.3 million.  Upon the early extinguishment of this debt, we recognized a loss 
of $1.7 million, representing unamortized issuance costs.

Effective February 14, 2012, we entered into an unsecured term loan agreement with a group of lenders for which J.P.
Morgan Securities LLC and KeyBank Capital Markets acted as joint lead arrangers and joint book runners, KeyBank National 
Association acted as administrative agent and JPMorgan Chase Bank, N.A. acted as syndication agent.  We borrowed $250.0
million under the term loan.  The term loan matures on February 14, 2017.  The variable interest rate on the loan is based on the 
LIBOR rate (customarily the 30-day rate) plus 1.65% to 2.40%, as determined by our leverage levels.

Effective August 3, 2012, we entered into an unsecured term loan agreement with a group of lenders for which Wells Fargo

Securities, LLC acted as sole arranger and sole book runner, Wells Fargo Bank, National Association acted as administrative 
agent and Capital One, N.A. acted as documentation agent.  We borrowed $120.0 million under the term loan, with the ability 
for us to borrow an additional $80.0 million, provided that there is no default under the loan and subject to the approval of the 
lenders.  The term loan matures on August 2, 2019.  The variable interest rate on the loan is based on the LIBOR rate 
(customarily the 30-day rate) plus 2.10% to 2.60%, as determined by our leverage levels.

In 2010, the Operating Partnership issued a $240.0 million aggregate principal amount of 4.25% Exchangeable Senior 

Notes due 2030.  Interest on the notes is payable on April 15 and October 15 of each year.  These notes have an exchange 
settlement feature that provides that the notes may, under certain circumstances, be exchangeable for cash and, at the Operating 
Partnership’s discretion, our common shares at an exchange rate (subject to adjustment) of 20.8513 shares per one thousand
dollar principal amount of the notes (exchange rate is as of December 31, 2012 and is equivalent to an exchange price of $47.96
per common share) (the initial exchange rate of the notes was based on a 20% premium over the closing price on the NYSE on 
the transaction pricing date).  On or after April 20, 2015, the Operating Partnership may redeem the notes in cash in whole or in 
part. The holders of the notes have the right to require us to repurchase the notes in cash in whole or in part on each of 
April 15, 2015, April 15, 2020 and April 15, 2025, or in the event of a “fundamental change,” as defined under the terms of the 
notes, for a repurchase price equal to 100% of the principal amount of the notes plus accrued and unpaid interest.  The notes are 
general unsecured senior obligations of the Operating Partnership and rank equally in right of payment with all other senior 
unsecured indebtedness of the Operating Partnership and are guaranteed by us. The carrying value of these notes included a 
principal amount of $240 million and an unamortized discount totaling $9.1 million at December 31, 2012 and $12.7 million at 
December 31, 2011.  The effective interest rate under the notes, including amortization of the issuance costs, was 6.05%. 
Because the closing price of our common shares at December 31, 2012 and 2011 was less than the exchange price per common 
share applicable to these notes, the if-converted value of the notes did not exceed the principal amount.  The table below sets 
forth interest expense recognized on these notes before deductions for amounts capitalized (in thousands):

Interest expense at stated interest rate
Interest expense associated with amortization of

discount

Total

For the Years Ended December 31,

2012
$ 10,200

2011
$ 10,200

3,651
$ 13,851

3,437
$ 13,637

2010
7,480

2,445
9,925

$

$

F-31

 
 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

Until September 15, 2011, the Operating Partnership had $162.5 million aggregate principal amount of 3.50%

Exchangeable Senior Notes due 2026. These notes had an exchange settlement feature that provided that the notes were, under 
certain circumstances, exchangeable for cash (up to the principal amount of the notes) and, with respect to any excess exchange 
value, were exchangeable into (at our option) cash, our common shares or a combination of cash and our common shares.  On 
September 15, 2011, we repurchased these notes at 100% of the principal amount of $162.5 million after the holders of such 
notes surrendered them for repurchase pursuant to the terms of the notes and the related Indenture. The effective interest rate 
under the notes, including amortization of the issuance costs, was 5.97%.  Because the closing price of our common shares at 
December 31, 2011 was less than the exchange price per common share applicable to these notes, the if-converted value of the 
notes did not exceed the principal amount. The table below sets forth interest expense recognized on these notes before 
deductions for amounts capitalized:

Interest expense at stated interest rate
Interest expense associated with amortization of

discount

Total

For the Years Ended
December 31,

2011
4,013

2,617
6,630

$

$

2010
5,687

3,736
9,423

$

$

Certain of our debt instruments require that we comply with a number of restrictive financial covenants, including 

maximum leverage ratio, unencumbered leverage ratio, minimum net worth, minimum fixed charge coverage, minimum 
unencumbered interest coverage ratio, minimum debt service and maximum secured indebtedness ratio. As of December 31,
2012, we were within the compliance requirements of these financial covenants.

Our debt matures on the following schedule (in thousands):

2013
2014
2015
2016
2017
Thereafter
Total

$

121,129 (1)
158,341
795,802 (2)
278,642
551,388
122,490

$

2,027,792 (3)

(1) Includes $17.5 million that may be extended for one year, subject to certain conditions.
(2) Includes $411.1 million that may be extended for one year, subject to certain conditions.
(3) Represents scheduled principal amortization and maturities only and therefore excludes net discounts of $8.6 million.

Weighted average borrowings under our Revolving Credit Facilities totaled $276.5 million in 2012 and $482.3 million in 

2011. The weighted average interest rate on our Revolving Credit Facilities was 2.27% in 2012 and 1.65% in 2011.

We capitalized interest costs of $13.9 million in 2012, $17.4 million in 2011 and $16.5 million in 2010.

The following table sets forth information pertaining to the fair value of our debt (in thousands): 

Fixed-rate debt

4.25% Exchangeable Senior Notes
Other fixed-rate debt

Variable-rate debt

December 31, 2012

December 31, 2011

Carrying
Amount

Estimated
Fair Value

Carrying
Amount

Estimated
Fair Value

$

230,934
950,202
838,032
$ 2,019,168

$

240,282
968,180
845,558
$ 2,054,020

$

227,283
1,057,471
1,141,549
$ 2,426,303

$

238,077
1,054,424
1,139,856
$ 2,432,357  

F-32

 
 
 
 
 
 
 
 
 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

11.

Interest Rate Derivatives

The following table sets forth the key terms and fair values of our interest rate swap derivatives (dollars in thousands):

$

Notional
Amount

100,000  
100,000  
100,000  
100,000  
38,475 (1)
100,000
100,000
100,000
100,000
50,000  
50,000  
120,000  
100,000  
100,000 (2)
75,000 (2)
100,000 (2)
75,000 (2)

Fixed Rate

Floating Rate Index

0.6123% One-Month LIBOR
0.6100% One-Month LIBOR
0.8320% One-Month LIBOR
0.8320% One-Month LIBOR
3.8300% One-Month LIBOR + 2.25%
0.8055% One-Month LIBOR
0.8100% One-Month LIBOR
1.6730% One-Month LIBOR
1.7300% One-Month LIBOR
0.5025% One-Month LIBOR
0.5025% One-Month LIBOR
1.7600% One-Month LIBOR
1.9750% One-Month LIBOR
3.8415% Three-Month LIBOR
3.8450% Three-Month LIBOR
2.0525% Three-Month LIBOR-Reverse
2.0525% Three-Month LIBOR-Reverse

Effective
Date
1/3/2012
1/3/2012
1/3/2012
1/3/2012
11/2/2010
9/2/2014
9/2/2014
9/1/2015
9/1/2015
1/3/2011
1/3/2011
1/2/2009
1/1/2010
9/30/2011
9/30/2011
12/30/2011
12/30/2011

Expiration
Date
9/1/2014
9/1/2014
9/1/2015
9/1/2015
11/2/2015
9/1/2016
9/1/2016
8/1/2019
8/1/2019
1/3/2012
1/3/2012
5/1/2012
5/1/2012
9/30/2021
9/30/2021
9/30/2021
9/30/2021

$

  $

Fair Value at
December 31,

2012

2011

(594) $
(591)
(1,313)
(1,313)
(1,268)
(263)
(272)
(154)
(417)
—
—
—
—
—
—
—
—

55
56
(66)
(49)
(1,054)
—
—
—
—
(1)
(1)
(552)
(532)
(16,333)
(12,275)
345
260
(6,185) $ (30,147)

(1) The notional amount of this instrument is scheduled to amortize to $36.2 million.
(2) As described below, we settled these instruments on January 5, 2012, along with interest accrued thereon, for an aggregate of $29.7
million.  Our policy is to present payments to terminate interest rate swaps entered into in order to hedge forecasted interest 
payments as operating activities on our consolidated statement of cash flows.  Accordingly, the payments to settle these instruments 
were included in net cash provided by operating activities on our consolidated statement of cash flows.

Each of the one-month LIBOR interest rate swaps set forth in the table above was designated as a cash flow hedge of 

interest rate risk.

On April 5, 2011, we entered into the two forward starting three-month LIBOR swaps set forth above with an effective date 

of September 30, 2011 for an aggregate notional amount of $175 million. We designated these swaps as cash flow hedges of 
interest payments on ten-year, fixed-rate borrowings forecasted to occur between August 2011 and April 2012.  After meeting 
with our Board of Trustees on December 21, 2011, we determined that we would pursue other financing options and concluded 
that the originally forecasted borrowings were expected not to occur.  Accordingly, the swaps no longer qualified for hedge 
accounting.  On December 22, 2011, we entered into the two reverse three-month LIBOR swaps set forth above with an 
effective date of December 30, 2011 for an aggregate notional amount of $175 million in order to remove the majority of the 
variability in the termination value of the forward starting swaps entered into on April 5, 2011. We recognized aggregate net 
losses of $29.8 million on these interest rate swaps in December 2011.  On January 5, 2012, we settled all of the forward 
starting swaps entered into on April 5, 2011 and December 22, 2011 and interest accrued thereon for an aggregate of $29.7
million.

F-33

 
 
 
 
 
 
 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

The table below sets forth the fair value of our interest rate derivatives as well as their classification on our consolidated 

balance sheet (in thousands):

December 31, 2012

December 31, 2011

Derivatives
Interest rate swaps designated as cash flow hedges

Interest rate swaps not designated as hedges

Interest rate swaps designated as cash flow hedges
Interest rate swaps not designated as hedges

Balance Sheet Location
Prepaid expenses and
other assets

N/A
Interest rate derivatives
N/A

$

Fair Value

—

Balance Sheet Location
Prepaid expenses and
other assets
Prepaid expenses and
other assets
Interest rate derivatives
— Interest rate derivatives

—
(6,185)

Fair Value

$

111

605
(2,255)
(28,608)

The table below presents the effect of our interest rate derivatives on our consolidated statements of operations and 

comprehensive income (in thousands):

For the Years Ended December 31,
2011

2010

2012

Amount of loss recognized in accumulated other comprehensive

loss (“AOCL”) (effective portion)

Amount of loss reclassified from AOCL into interest expense

(effective portion)

Amount of loss reclassified from AOCL to loss on interest rate

derivatives upon discontinuing hedge accounting

Amount of loss on interest rate derivatives recognized subsequent to

such derivatives no longer being designated as hedges

$

(7,676) $

(31,531) $

(5,473)

(3,697)

(4,601)

(3,689)

—

—

28,430

1,375

—

—

Over the next 12 months, we estimate that approximately $2.6 million will be reclassified from AOCL as an increase to interest 
expense.

We have agreements with each of our interest rate derivative counterparties that contain provisions under which, if we 
default or are capable of being declared in default on any of our indebtedness, we could also be declared in default on our 
derivative obligations.  These agreements also incorporate the loan covenant provisions of our indebtedness with a lender 
affiliate of the derivative counterparties.  Failure to comply with the loan covenant provisions could result in our being declared 
in default on any derivative instrument obligations covered by the agreements.  As of December 31, 2012, the fair value of 
interest rate derivatives in a liability position related to these agreements was $6.2 million, excluding the effects of accrued 
interest. As of December 31, 2012, we had not posted any collateral related to these agreements.  We are not in default with any 
of these provisions.  If we breached any of these provisions, we could be required to settle our obligations under the agreements 
at their termination value of $6.4 million.

12.

Shareholders’ Equity

Preferred Shares

At December 31, 2012, we had 25.0 million preferred shares of beneficial interest (“preferred shares”) authorized at $0.01
par value. The table below sets forth additional information pertaining to our preferred shares (dollars in thousands, except per 
share data):

Series
Series H
Series J
Series K
Series L

# of Shares
Issued
2,000,000
3,390,000
531,667
6,900,000
12,821,667

Aggregate
Liquidation
Preference
$

Month of Issuance
50,000 December 2003
84,750
26,583
172,500
$ 333,833

July 2006
January 2007
June 2012

Annual
 Annual
Dividend
Dividend
Per Share
Yield
7.500% $1.87500
7.625% $1.90625
5.600% $2.80000
7.375% $1.84375

Earliest
Redemption
Date
12/18/2008
7/20/2011
1/9/2017
6/27/2017

Each series of preferred shares is nonvoting and redeemable for cash in the amount of its liquidation preference at our 

option on or after the earliest redemption date. The Series K Cumulative Redeemable Preferred Shares are also convertible, 

F-34

 
 
 
 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

subject to certain conditions, into common shares on the basis of 0.8163 common shares for each preferred share.  Holders of 
all preferred shares are entitled to cumulative dividends, payable quarterly (as and if declared by our Board of Trustees).  In the 
case of each series of preferred shares, there is a series of preferred units in the Operating Partnership owned by us that carries 
substantially the same terms.

On June 27, 2012, we completed the public offering of 6.9 million Series L Cumulative Preferred Shares of beneficial 

interest (“Series L Preferred Shares”) at a price of $25.00 per share for net proceeds of $165.7 million after underwriting 
discounts but before offering expenses. We contributed the net proceeds from the sale to our Operating Partnership in exchange 
for 6.9 million Series L Preferred Units. The Series L Preferred Units carry terms that are substantially the same as the Series L
Preferred Shares.

On August 6, 2012, we redeemed all of our outstanding 8% Series G Preferred Shares of beneficial interest (the “Series G 
Preferred Shares”) at a price of $25.00 per share, or $55.0 million in the aggregate, plus accrued and unpaid dividends thereon 
through the date of redemption. We recognized a $1.8 million decrease to net income available to common shareholders 
pertaining to the original issuance costs incurred on the Series G Preferred Shares at the time of the redemption.

Common Shares

During 2011 and 2012, we completed the following public offerings of common shares:

•

•

4.6 million common shares in May 2011 at a public offering price of $33.00 per share for net proceeds of $145.7 million
after underwriter discounts but before offering expenses; and
8.6 million common shares in October 2012 at a public offering price of $24.75 per share for net proceeds of $204.9
million after underwriter discounts but before offering expenses.

In October 2012, we established an at-the-market (“ATM”) stock offering program under which we may, from time to time, 

offer and sell common shares in “at the market” stock offerings having an aggregate gross sales price of up to $150.0 million.
We completed no sales of shares under this program in 2012.

Holders of common units in our Operating Partnership converted their units into common shares on the basis of one

common share for each common unit in the amount of 234,246 in 2012 and 100,939 in 2011.

We declared dividends per common share of $1.10 in 2012, $1.65 in 2011 and $1.61 in 2010.

See Note 13 for disclosure of common share activity pertaining to our share-based compensation plans.

13.

Share-Based Compensation and Employee Benefit Plans

Share-Based Compensation Plans

In May 2010, we adopted the Amended and Restated 2008 Omnibus Equity and Incentive Plan. We may issue equity-

based awards under this plan to officers, employees, non-employee trustees and any other key persons of us and our 
subsidiaries, as defined in the plan. The plan provides for a maximum of 5,900,000 common shares of beneficial interest to be 
issued in the form of options, share appreciation rights, deferred share awards, restricted share awards, unrestricted share 
awards, performance shares, dividend equivalent rights and other equity-based awards and for the granting of cash-based 
awards. The plan expires on May 13, 2020.

In March 1998, we adopted a long-term incentive plan for our Trustees and employees. This plan, which expired in March 

2008, provided for the award of options, restricted shares and dividend equivalents.

Grants of restricted shares and options under these plans to nonemployee Trustees generally vest on the first anniversary of 
the grant date provided that the Trustee remains in his or her position.  Restricted shares and options granted to employees vest 
based on increments and over periods of time set forth under the terms of the respective awards provided that the employees 
remain employed by us.  Options expire ten years after the date of grant.  Shares for each of our share-based compensation 
plans are issued under registration statements on Form S-8 that became effective upon filing with the Securities and Exchange 
Commission.

F-35

 
 
 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

The following table summarizes restricted share transactions under our share-based compensation plans for 2010, 2011 and 

2012:

Unvested at December 31, 2009
Granted
Forfeited
Vested
Unvested at December 31, 2010
Granted
Forfeited
Vested
Unvested at December 31, 2011
Granted
Forfeited
Vested
Unvested at December 31, 2012
Restricted shares expected to vest

Weighted
Average
Grant Date
Fair Value

30.43
37.74
34.38
32.24
32.77
33.68
34.23
32.86
33.13
23.64
31.43
32.72
29.67
29.73

 Shares

668,990
290,956
(13,986)
(276,102)
669,858
320,284
(18,058)
(323,706)
648,378
177,662
(17,019)
(374,378)
434,643
419,014

$

$
$

The aggregate intrinsic value of restricted shares that vested was $9.0 million in 2012, $11.2 million in 2011 and $10.3

million in 2010.

Our Board of Trustees made the following grants of Performance Share Units (“PSUs”) to executives:

•

•

•

100,645 PSUs on March 4, 2010 (the “2010 PSU Grants”) with an aggregate grant date fair value of $5.4 million.  Certain 
executives voluntarily cancelled 58,105 of these PSUs in 2011; we recognized a non-cash compensation charge of $1.2
million in 2011 in connection with these PSU cancellations. The remaining PSUs at December 31, 2011 were held by Mr.
Randall M. Griffin, our former Chief Executive Officer, and were terminated upon his retirement on March 31, 2012;
based on the Company’s total shareholder return relative to its peer group of companies, there was no payout value in 
connection with the termination of the PSUs;
56,883 PSUs on March 3, 2011 (the “2011 PSU Grants”) with an aggregate grant date fair value of $2.8 million which 
were all outstanding at December 31, 2012; and
54,070 PSUs on March 1, 2012, (the “2012 PSU Grants”) with an aggregate grant date fair value of $1.8 million which 
were all outstanding at December 31, 2012. 

The PSUs have a performance period beginning on the respective grant dates and concluding on the earlier of three years 

from the respective grant dates or the date of: (1) termination by the Company without cause, death or disability of the 
executive or constructive discharge of the executive (collectively, “qualified termination”); or (2) a sale event.  The number of 
PSUs earned (“earned PSUs”) at the end of the performance period will be determined based on the percentile rank of the 
Company’s total shareholder return relative to a peer group of companies, as set forth in the following schedule:

Percentile Rank
75th or greater
50th or greater
25th
Below 25th

  Earned PSUs Payout %
  200% of PSUs granted
  100% of PSUs granted
  50% of PSUs granted
  0% of PSUs granted

If the percentile rank exceeds the 25th percentile and is between two of the percentile ranks set forth in the table above, then the 
percentage of the earned PSUs will be interpolated between the ranges set forth in the table above to reflect any performance 
between the listed percentiles.  At the end of the performance period, we, in settlement of the award, will issue a number of 
fully-vested common shares equal to the sum of:

F-36

Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

•
•

the number of earned PSUs in settlement of the award plan; plus
the aggregate dividends that would have been paid with respect to the common shares issued in settlement of the earned 
PSUs through the date of settlement had such shares been issued on the grant date, divided by the share price on such 
settlement date, as defined under the terms of the agreement.

If a performance period ends due to a sale event or qualified termination, the number of earned PSUs is prorated based on 

the portion of the three-year performance period that has elapsed.  If employment is terminated by the employee or by the 
Company for cause, all PSUs are forfeited.  PSUs do not carry voting rights.

We computed grant date fair values for PSUs using Monte Carlo models and are recognizing these values over three-year 

periods that commenced on the respective grant dates. The grant date fair value and certain of the assumptions used in the 
Monte Carlo models for PSUs granted in 2010, 2011 and 2012 are set forth below: 

Grant date fair value
Baseline common share value
Expected volatility of common shares
Risk-free interest rate

For the Years Ended December 31, 
2010
2011
2012
$ 53.31
$ 49.15
$ 32.77
$ 37.84
$ 35.17
$ 24.39

43.2%
0.41%

61.1%
1.32%

62.2%
1.38%

The following table summarizes option transactions under our share-based compensation plans for 2010, 2011 and 2012 

(dollars in thousands, except per share data): 

Outstanding at December 31, 2009
Forfeited/Expired – 2010
Exercised – 2010
Outstanding at December 31, 2010
Forfeited/Expired – 2011
Exercised – 2011
Outstanding at December 31, 2011
Forfeited/Expired – 2012
Exercised – 2012
Outstanding at December 31, 2012
Exercisable at December 31, 2010
Exercisable at December 31, 2011
Exercisable at December 31, 2012

 Shares
1,501,906
(34,966)
(278,656)
1,188,284
(51,598)
(191,264)
945,422
(85,588)
(61,624)
798,210
1,188,284
945,422
798,210

Range of Exercise
Price per Share
$8.63 - $57.00
$41.33 - $49.60
$8.63 - $42.07
$9.54 - $57.00
$22.49 - $50.59
$9.54 - $30.25
$13.40 - $57.00
$25.52 - $57.00
$13.40 - $22.49
$13.60 - $57.00

(1)

(2)

(3)

Weighted
Average
Exercise
Price per
Share

$
$
$
$
$
$
$
$
$
$
$
$
$

30.29
46.59
16.42
33.07
42.82
12.82
36.63
42.98
15.08
37.62
33.07
36.63
37.62

Weighted
Average
Remaining
Contractual
Term
(in Years)
5

5

4

3

Aggregate
Intrinsic
Value
$ 14,579

$ 7,987

$

510

$

325

(1) 231,946 of these options had an exercise price ranging from $9.54 to $16.73; 246,103 had an exercise price ranging from 
$16.74 to $30.04; 205,012 had an exercise price ranging from $30.05 to $41.28; 253,607 had an exercise price ranging 
from $41.29 to $45.24; and 251,616 had an exercise price ranging from $45.25 to $57.00.

(2) 53,957 of these options had an exercise price ranging from $13.40 to $16.73; 225,903 had an exercise price ranging from 

$16.74 to $30.04; 198,762 had an exercise price ranging from $30.05 to $41.28; and 466,800 had an exercise price ranging 
from $41.29 to $57.00.

(3) 9,500 of these options had an exercise price ranging from $13.60 to $16.73; 204,736 had an exercise price ranging from 

$16.74 to $30.04; 180,962 had an exercise price ranging from $30.05 to $41.28; and 403,012 had an exercise price ranging 
from $41.29 to $57.00.

The aggregate intrinsic value of options exercised was $553,000 in 2012, $4.0 million in 2011 and $5.9 million in 2010.

F-37

 
 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

We own a taxable REIT subsidiary that is subject to Federal and state income taxes. We realized a windfall tax benefit of 
$43,000  in 2012 and $47,000 in 2011 on options exercised and vesting restricted shares in connection with employees of that 
subsidiary.

The table below sets forth our reporting for share based compensation expense (in thousands):

General, administrative and leasing expenses
Property operating expenses
Capitalized to development activities
Share-based compensation expense

 For the Years Ended December 31,

2012

2011

2010

$

$

8,611
1,371
1,202
11,184

$

$

9,077
2,843
2,347
14,267

$

$

7,511
2,543
1,791
11,845

The amounts included in our consolidated statements of operations for share-based compensation reflected an estimate of 

pre-vesting forfeitures of: 0% for all PSUs; 0% to 5% for restricted shares for 2012; and 0% to 4% for restricted shares for 2011
and 2010.

As of December 31, 2012, all of our options are vested and fully expensed. As of December 31, 2012, there was $6.8

million of unrecognized compensation cost related to unvested restricted shares that is expected to be recognized over a 
weighted average period of approximately two years. As of December 31, 2012, there was $2.3 million of unrecognized 
compensation cost related to PSUs that is expected to be recognized over a weighted average performance period of 
approximately two years.

401(k) Plan

We have a 401(k) defined contribution plan covering substantially all of our employees that permits participants to 
contribute up to 90% of their compensation, as defined in the Plan, per pay period on a before-tax basis or after-tax basis, or a 
combination of both, subject to limitations under the Internal Revenue Code of 1986 ( the “IRC”), as amended.  Participants 
who are 50 years of age or older by the end of a particular plan year and have contributed the maximum 401(k) deferral amount 
allowed under the plan for that year are eligible to contribute an additional portion of their annual compensation on a before-tax 
basis as catch-up contributions, up to the annual limit under the IRC. We match 100% of the first 1% of pre-tax and/or after-tax
contributions that participants contribute to the plan and 50% of the next 5% in participant contributions to the plan 
(representing an aggregate match by us of 3.5% on the first 6% of participant pre-tax and/or after-tax contributions to the plan).  
Participants’ contributions are fully vested.  Participants are 50% vested in Company matching contributions after one year of 
credited service and 100% vested after two years of credited service. We fund all contributions with cash.  Our matching 
contributions under the plan totaled approximately $1.1 million in 2012, $1.1 million in 2011 and $1.0 million in 2010. The
401(k) plan is fully funded at December 31, 2012.

Deferred Compensation Plan

We have a non-qualified elective deferred compensation plan for certain members of our management team that permits 
participants to defer up to 100% of their compensation on a pre-tax basis and receive a tax-deferred return on such deferrals.
The balance of the plan, which was fully funded, totaled $6.8 million at December 31, 2012 and $7.6 million at December 31,
2011, and is included in the accompanying consolidated balance sheets.

F-38

Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

14.

Operating Leases

We lease our properties to tenants under operating leases with various expiration dates extending to the year 2025.  Gross 

minimum future rentals on noncancelable leases in our properties at December 31, 2012 were as follows (in thousands):

Year Ending December 31,
2013
2014
2015
2016
2017
Thereafter

$

352,149
310,422
261,123
208,483
168,585
373,283
$ 1,674,045

F-39

15.

Information by Business Segment

Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

We have ten reportable operating office property segments (comprised of: the Baltimore/Washington Corridor; Northern Virginia; San Antonio; Washington, DC — Capitol 

Riverfront; St. Mary’s and King George Counties; Greater Baltimore; Suburban Maryland; Colorado Springs; Greater Philadelphia; and other). We also have an operating 
wholesale data center segment.  On January 1, 2012, we revised our reportable segments to include only operating properties.  Accordingly, we revised net operating income from 
real estate operations (“NOI from real estate operations”) to exclude operating expenses not related to operating properties, revised our definition of segment assets to include only 
long-lived assets associated with operating properties and revised our definition of additions to long-lived assets to include only additions to existing operating properties 
(excluding acquisitions and transfers from non-operating properties).  In 2012, we also reclassified costs expensed in connection with marketing space for lease to prospective 
tenants from property operating expenses to general, administrative and leasing expenses, the result of which is the exclusion of such expenses from NOI from real estate 
operations.  Financial information for prior periods has been presented in conformity with these revisions.

The table below reports segment financial information for our reportable segments (in thousands).  We measure the performance of our segments through the measure we 

define as NOI from real estate operations, which is derived by subtracting property operating expenses from revenues from real estate operations.

Baltimore/
Washington
Corridor

Northern
Virginia

San
Antonio

Washington,
DC - Capitol
Riverfront

St. Mary’s & 
King George
Counties

Greater
Baltimore

Suburban
Maryland

Colorado
Springs

Greater
Philadelphia

Other

Operating
Wholesale
Data Center

Total

Operating Office Property Segments

Year Ended December 31, 2012

Revenues from real estate operations

Property operating expenses

NOI from real estate operations

Additions to long-lived assets

Transfers from non-operating properties

Segment assets at December 31, 2012

Year Ended December 31, 2011

Revenues from real estate operations

Property operating expenses

NOI from real estate operations

Additions to long-lived assets

Transfers from non-operating properties

Segment assets at December 31, 2011

$

$
$
$
$

$

$

224,959
77,295
147,664
$
24,599
$
64,318
$
$ 1,214,105

$

79,574
29,103
50,471
$
65,157
$
44,250
$
$ 569,860

$ 32,018
16,499
$ 15,519
280
$
468
$
$119,369

$

16,697
7,555
$
9,142
317
$
— $
$

104,544

$

218,051
78,631
139,420
$
20,974
$
$
67,357
$ 1,216,770

$

74,214
28,518
45,696
$
14,770
$
$
4
$ 484,392

$ 30,066
14,371
$ 15,695
$
$ 17,638
$131,412

$
— $
$
$

17,878
6,762
11,116
2,794

$
$
— $
$

111,318

Year Ended December 31, 2010

Revenues from real estate operations

Property operating expenses

NOI from real estate operations
Additions to long-lived assets

Transfers from non-operating properties

Segment assets at December 31, 2010

$

207,456
74,365
133,091
$
21,629
$
$
48,549
$ 1,182,659

$

75,063
26,688
48,375
91,919

$ 21,673
10,260
$ 11,413
$
17
(42) $ 40,500
$114,850

$
$
$
$ 492,005

$

$
$
$
$

4,678
1,736
2,942
92,827

$
$
— $
$

119,927

$

$

16,392
4,745
11,647
1,844
289
98,027

$ 52,616
19,917
$ 32,699
$
9,690
$ 37,558
$ 320,548

$ 15,016
6,295
8,721
$
1,319
$
790
$
$ 53,252

$ 25,189
9,283
$ 15,906
2,977
$
4,295
$
$ 176,726

14,366
4,142
10,224
1,638
16,858
100,818

$ 70,668
29,543
$ 41,125
$ 21,086
$ 16,307
$ 402,067

$ 21,982
9,174
$ 12,808
$ 12,267
$
395
$ 148,635

$ 23,860
8,800
$ 15,060
4,116
$
$
214
$ 182,758

13,967
4,176
9,791
1,103

$ 71,850
30,406
$ 41,444
$ 11,501
— $ 15,289
$ 473,977

88,221

$ 21,759
9,455
$ 12,304
1,959
$
$
5,623
$ 145,646

$ 24,897
8,231
$ 16,666
$
1,626
$ 32,438
$ 215,801

$

$
$
$
$

$

$
$
$
$

$

$
$
$
$

F-40

9,698
2,562
7,136
286
10,626
78,798

$ 14,294
2,666
$ 11,628
133
$
394
$
$109,924

7,458
1,402
6,056
516
5,446
102,572

$ 12,235
3,048
$ 9,187
$ 26,889
$
$115,048

$
$
— $
$

$

$
$
$
$

$

6,647
4,815
1,832
199
58,009
100,777

$ 493,100
180,735
$ 312,365
$ 106,801
$ 220,997
$2,945,930

5,054
3,429
1,625
59
20,169
43,650

$ 495,832
187,820
$ 308,012
$ 105,109
$ 144,388
$3,039,440

6,299
2,131
4,168
30
23,119
99,701

$

$ 13,024
4,105
$
$ 8,919
$ (2,012) $
$
$
14
$
$ 85,633

$ 461,728
1,062
1,216
172,769
(154) $ 288,959
$ 220,968
369
$ 185,288
19,798
$3,042,647
24,227

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

The following table reconciles our segment revenues to total revenues as reported on our consolidated statements of 

operations (in thousands):

Segment revenues from real estate operations
Construction contract and other service revenues
Less: Revenues from discontinued operations (Note 17)
Total revenues

For the Years Ended December 31,

2012
$ 493,100
73,836
(38,929)
$ 528,007

2011
$ 495,832
84,345
(67,336)
$ 512,841

2010
$ 461,728
104,675
(74,169)
$ 492,234

The following table reconciles our segment property operating expenses to property operating expenses as reported on our 

consolidated statements of operations (in thousands):

Segment property operating expenses
Less: Property operating expenses from discontinued operations (Note 17)
Total property operating expenses

For the Years Ended December 31,
2010
2011
2012
$ 172,769
$ 187,820
$ 180,735
(26,152)
(25,423)
(13,574)
$ 146,617
$ 162,397
$ 167,161

As previously discussed, we provide real estate services such as property management and construction and development 

services primarily for our properties but also for third parties.  The primary manner in which we evaluate the operating 
performance of our service activities is through a measure we define as net operating income from service operations (“NOI 
from service operations”), which is based on the net of revenues and expenses from these activities.  Construction contract and 
other service revenues and expenses consist primarily of subcontracted costs that are reimbursed to us by the customer along 
with a management fee. The operating margins from these activities are small relative to the revenue.  We believe NOI from 
service operations is a useful measure in assessing both our level of activity and our profitability in conducting such operations. 
The table below sets forth the computation of our NOI from service operations (in thousands):

Construction contract and other service revenues
Construction contract and other service expenses
NOI from service operations

For the Years Ended December 31,
2010
2011
2012
$ 104,675
$ 84,345
$ 73,836
(102,302)
(81,639)
(70,576)
2,373
2,706
3,260

$

$

$

The following table reconciles our NOI from real estate operations for reportable segments and NOI from service 

operations to (loss) income from continuing operations as reported on our consolidated statements of operations (in thousands):

NOI from real estate operations
NOI from service operations
Interest and other income
Equity in (loss) income of unconsolidated entities
Income tax (expense) benefit
Other adjustments:

Depreciation and other amortization associated with real estate

operations

Impairment losses
General, administrative and leasing expenses
Business development expenses and land carry costs
Interest expense on continuing operations
NOI from discontinued operations
Loss on interest rate derivatives
Loss on early extinguishment of debt
Income (loss) from continuing operations

F-41

For the Years Ended December 31,
2010
2011
2012
$ 288,959
$ 308,012
$ 312,365
2,373
2,706
3,260
9,568
5,603
7,172
(331)
(546)
1,376
(108)
(381)
6,710

—

(113,480)
(43,214)
(31,900)
(5,711)
(94,624)
(25,355)
—
(943)
6,643

$

(113,111)
(83,478)
(30,314)
(6,122)
(98,222)
(41,913)
(29,805)
(1,639)

(97,897)
—
(28,501)
(6,403)
(95,729)
(48,017)
—
—
$ (81,904) $ 25,621

 
 
 
 
 
 
 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

The following table reconciles our segment assets to total assets (in thousands):

Segment assets
Non-operating property assets
Other assets
Total assets

As of December 31,

2012
$ 2,945,930
570,402
137,427
$ 3,653,759

2011
$ 3,039,440
658,900
165,215
$ 3,863,555

The accounting policies of the segments are the same as those used to prepare our consolidated financial statements, except 
that discontinued operations are not presented separately for segment purposes.  In the segment reporting presented above, we 
did not allocate interest expense, depreciation and amortization and impairment losses to our real estate segments since they are 
not included in the measure of segment profit reviewed by management.  We also did not allocate general and administrative 
expenses, business development expenses and land carry costs, interest and other income, equity in loss of unconsolidated 
entities, income taxes and noncontrolling interests because these items represent general corporate or non-operating property 
items not attributable to segments.

16.

Income Taxes

We elected to be treated as a REIT under Sections 856 through 860 of the Internal Revenue Code. To qualify as a REIT,
we must meet a number of organizational and operational requirements, including a requirement that we distribute at least 90%
of our adjusted taxable income to our shareholders. As a REIT, we generally will not be subject to Federal income tax on 
taxable income that we distribute to our shareholders.  If we fail to qualify as a REIT in any tax year, we will be subject to 
Federal income tax on our taxable income at regular corporate rates and may not be able to qualify as a REIT for four
subsequent tax years.

The differences between taxable income reported on our income tax return (estimated 2012 and actual 2011 and 2010) and 

net income as reported on our consolidated statements of operations are set forth below (in thousands): 

Net income (loss)
Adjustments:

Rental revenue recognition
Compensation expense recognition
Operating expense recognition
Gain on sales of properties
Impairment losses
Loss on interest rate derivatives
Gains from non-real estate investments
Income from service operations
Income tax expense
Depreciation and amortization
Discounts/premiums included in interest 

expense

Income from unconsolidated entities
Noncontrolling interests, gross
Other

Taxable income

$

For the Years Ended December 31,
2010
2011
2012

 (Estimated)
20,341
$

$ (127,576) $

45,504

(12,575)
(2,098)
1,148
(45,323)
66,910
(29,805)
2,843
1,500
381
25,410

3,194
(725)
(463)
836
31,574

(10,708)
(1,298)
751
1,154
151,021
29,805
4,447
(12,078)
6,710
44,070

5,548
(374)
(7,502)
80
84,050

$

$

(9,192)
(4,820)
280
6,548
—
—
(6,994)
(1,628)
119
42,365

5,841
(244)
(3,288)
2,173
76,664

F-42

 
 
 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

For Federal income tax purposes, dividends to shareholders may be characterized as ordinary income, capital gains or 
return of capital. The characterization of dividends declared on our common and preferred shares during each of the last three 
years was as follows:

Ordinary income
Long term capital gain
Return of capital

Common Shares
For the Years Ended December 31,
2011
56.9%
9.4%
33.7%

2012
33.2%
0.0%
66.8%

2010
59.7%
8.0%
32.3%

Preferred Shares
For the Years Ended December 31,
2011
85.9%
14.1%
0.0%

2012
100.0%
0.0%
0.0%

2010
88.3%
11.7%
0.0%

We distributed all of our REIT taxable income in 2012, 2011 and 2010 and, as a result, did not incur Federal income tax in 

those years on such income. 

The net basis of our consolidated assets and liabilities for tax reporting purposes is approximately $387 million lower than 
the amount reported on our consolidated balance sheet at December 31, 2012, which is primarily related to differences in basis 
for net properties, intangible assets on property acquisitions and deferred rent receivable.

We own a taxable REIT subsidiary (“TRS”) that is subject to Federal and state income taxes.  Our TRS had income (loss) 

before income taxes under GAAP of $11.3 million in 2012, $(27.7) million in 2011 and $345,000 in 2010.  Our TRS’ provision 
for income tax consisted of the following (in thousands):

Deferred
Federal
State

Current

Federal
State

Total income tax (expense) benefit
Reported on line entitled income tax (expense) benefit
Reported on line entitled gain on sales of real estate, net
Total income tax (expense) benefit

For the Years Ended December 31,
2010
2011
2012

$

$
$

$

(312) $
(69)
(381)

5,510
1,219
6,729

—
—
—
(381) $
(381) $
—
(381) $

(16)
(3)
(19)
6,710
6,710
—
6,710

$

$
$

$

64
14
78

(161)
(36)
(197)
(119)
(108)
(11)
(119)

A reconciliation of our TRS’ Federal statutory rate to the effective tax rate for income tax reported on our statements of 

operations is set forth below:

Income taxes at U.S. statutory rate
State and local, net of U.S. Federal tax benefit
Other
Effective tax rate

2010

For the Years Ended December 31,
2011
34.0% 34.0 %
4.6%
4.2 %
0.0% (3.5)%
38.6% 34.7 %

2012
34.0%
4.6%
0.0%
38.6%

Items in our TRS contributing to temporary differences that lead to deferred taxes include depreciation and amortization, 

share-based compensation, certain accrued compensation, compensation paid in the form of contributions to a deferred 
nonqualified compensation plan, impairment losses and net operating losses that are not deductible until future periods. As of 
December 31, 2012, our TRS had a net operating loss carryforward for federal income tax purposes of approximately $16
million expiring in 2033.

The table below sets forth the tax effects of temporary differences and carry forwards included in the net deferred tax asset 

of our TRS (in thousands):

F-43

 
 
 
 
 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

Operating loss and interest deduction carry forwards
Share-based compensation
Property (1)
Net deferred tax asset

December 31,

2012

2011

$

$

6,014
598
—
6,612

$

$

1,758
497
4,668
6,923

(1) Difference primarily pertains to depreciation and amortization, basis of contributed assets and the capitalization of interest and certain 

other costs.

 We are subject to certain state and local income and franchise taxes. The expense associated with these state and local 
taxes is included in general and administrative expense and property operating expenses on our consolidated statements of 
operations. We did not separately state these amounts on our consolidated statements of operations because they are 
insignificant.

17.

Discontinued Operations and Assets Held for Sale

Income from discontinued operations primarily includes revenues and expenses associated with the following:

•
•
•
•
•
•
•
•

•
•
•
•
•
•

•

•

11101 McCormick Road in Greater Baltimore that was sold on February 1, 2010; 
431 and 437 Ridge Road in Central New Jersey (included in the Other region) that were sold on September 8, 2010;
1344 and 1348 Ashton Road and 1350 Dorsey Road in the Baltimore/Washington Corridor that were sold on May 24, 2011;
216 Schilling Circle in Greater Baltimore that was sold on August 23, 2011;
four properties comprising the Towson Portfolio in Greater Baltimore that were sold on September 29, 2011;
11011 McCormick Road in Greater Baltimore that was sold on November 1, 2011;
10001 Franklin Square Drive in Greater Baltimore that was sold on December 13, 2011;
13 properties comprising the Rutherford Business Center portfolio in Greater Baltimore that were sold on December 15, 
2011;
five properties in White Marsh, Maryland (in the Greater Baltimore region) that were sold on January 30, 2012;
1101 Sentry Gateway in San Antonio that was sold on January 31, 2012;
222 and 224 Schilling Circle in Greater Baltimore that were sold on February 10, 2012;
15 and 45 West Gude Drive in Suburban Maryland that were sold on May 2, 2012;
11800 Tech Road in Suburban Maryland that was sold on June 14, 2012;
400 Professional Drive in Suburban Maryland for which the title to the property was transferred to the mortgage lender on 
July 2, 2012 (see Note 5);
23 operating properties in the Baltimore/Washington Corridor and Greater Baltimore regions that were sold on July 24, 
2012; and
16 operating properties in Colorado Springs and an operating property in Suburban Maryland classified as held for sale at 
December 31, 2012.

F-44

 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

The table below sets forth the components of discontinued operations reported on our consolidated statements of operations 

(in thousands):

Revenue from real estate operations
Property operating expenses
Depreciation and amortization
Impairment losses
General, administrative and leasing expenses
Business development and land carry costs
Interest expense
Gain on sales of real estate
Gain (loss) on early extinguishment of debt
Discontinued operations

$

$

$

$

For the Years Ended December 31,
2010
2011
2012
74,169
67,336
38,929
(26,152)
(25,423)
(13,574)
(25,346)
(21,020)
(8,457)
(67,543)
(23,696)
—
(223)
(12)
(3)
(72)
(75)
(24)
(6,399)
(6,079)
(2,174)
1,077
4,796
20,940
(384)
—
1,736
17,054
13,677

$ (48,404) $

The table below sets forth the components of assets held for sale on our consolidated balance sheets (in thousands):

Properties, net
Deferred rent receivable
Intangible assets on real estate acquisitions, net
Deferred leasing costs, net
Lease incentives
Assets held for sale, net

18.

Earnings Per Share (“EPS”)

As of December 31,
2012
2011
$ 108,356
$ 128,740
2,800
4,068
1,737
4,409
3,723
2,923
—
89
$ 116,616
$ 140,229

We present both basic and diluted EPS.  We compute basic EPS by dividing net income available to common shareholders 
allocable to unrestricted common shares under the two-class method by the weighted average number of unrestricted common 
shares outstanding during the period.  Our computation of diluted EPS is similar except that:

•

•

the denominator is increased to include: (1) the weighted average number of potential additional common shares that 
would have been outstanding if securities that are convertible into our common shares were converted; and (2) the effect of 
dilutive potential common shares outstanding during the period attributable to share-based compensation using the treasury 
stock or if-converted methods; and
the numerator is adjusted to add back any changes in income or loss that would result from the assumed conversion into 
common shares that we added to the denominator.

F-45

 
 
 
 
 
 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

Summaries of the numerator and denominator for purposes of basic and diluted EPS calculations are set forth below (in 
thousands, except per share data):

Numerator:
Income (loss) from continuing operations
Gain on sales of real estate, net
Preferred share dividends
Issuance costs associated with redeemed preferred shares
Loss (income) from continuing operations attributable to 

noncontrolling interests

Income from continuing operations attributable to restricted shares
Numerator for basic and diluted EPS from continuing operations

attributable to COPT common shareholders

Numerator for basic and diluted EPS from continuing operations 

attributable to COPT common shareholders

Discontinued operations
Discontinued operations attributable to noncontrolling interests
Numerator for basic and diluted EPS on net (loss) income 

attributable to COPT common shareholders

Denominator (all weighted averages):
Denominator for basic EPS (common shares)
Dilutive effect of share-based compensation awards
Denominator for diluted EPS
Basic EPS:

(Loss) income from continuing operations attributable to COPT

common shareholders

Discontinued operations attributable to COPT common

shareholders

Net (loss) income attributable to COPT common shareholders

Diluted EPS:

(Loss) income from continuing operations attributable to COPT

common shareholders

Discontinued operations attributable to COPT common

shareholders

Net (loss) income attributable to COPT common shareholders

For the Years Ended December 31,
2010
2011
2012

$

6,643
21
(20,844)
(1,827)

$ (81,904) $
2,732
(16,102)
—

25,621
2,829
(16,102)
—

1,387
(469)

5,288
(1,037)

(1,421)
(1,071)

$ (15,089) $ (91,023) $

9,856

$ (15,089) $ (91,023) $

13,677
(751)

(48,404)
2,860

9,856
17,054
(1,323)

$

(2,163) $ (136,567) $

25,587

73,454
—
73,454

69,382
—
69,382

59,611
333
59,944

$

$

$

$

(0.21) $

(1.31) $

0.17

0.18
(0.03) $

(0.66)
(1.97) $

0.26
0.43

(0.21) $

(1.31) $

0.17

0.18
(0.03) $

(0.66)
(1.97) $

0.26
0.43

Our diluted EPS computations do not include the effects of the following securities since the conversions of such securities 
would increase diluted EPS for the respective periods (in thousands):

Conversion of common units
Conversion of convertible preferred units
Conversion of convertible preferred shares

Weighted Average Shares Excluded from
Denominator for the Years Ended
December 31,

2012

2011

2010

4,235
176
434

4,355
176
434

4,608
176
434

The following share-based compensation securities were excluded from the computation of diluted EPS because their effect
was antidilutive:

•
•

weighted average restricted shares of 461,000 for 2012, 638,000 for 2011 and 666,000 for 2010; and
weighted average options of 772,000 for 2012, 712,000 for 2011 and 653,000 for 2010, respectively.

F-46

 
 
 
 
 
 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

As discussed in Note 10, we have outstanding senior notes that have an exchange settlement feature but did not affect our 
diluted EPS reported above since the weighted average closing price of our common shares during each of the periods was less 
than the exchange prices per common share applicable for such periods.

19.

Quarterly Data (Unaudited)

The tables below set forth selected quarterly information for the years ended December 31, 2012 and 2011 (in thousands, 
except per share data).  Certain of the amounts below have been reclassified to conform to the current period presentation of our 
consolidated financial statements.

For the Year Ended December 31, 2012

Revenues
Operating income (loss)
Income (loss) from continuing operations
Discontinued operations
Net income (loss)
Net loss (income) attributable to noncontrolling interests
Net income (loss) attributable to COPT
Preferred share dividends
Issuance costs associated with redeemed preferred shares
Net income (loss) attributable to COPT common shareholders
Basic earnings per common share

First
Quarter
$ 132,195
36,192
$
12,685
$
(2,450)
$
10,235
$
60
10,295
(4,025)
—
6,270
0.09

$
$

Second
Quarter
$ 128,163
$ 33,837
$ 10,065
1,775
$
$ 11,861
(556)
11,305
(4,167)
—
7,138
0.10

$
$

Diluted earnings per common share

$

0.09

$

0.10

Third
Quarter
$ 130,144
(8,586)
$
$ (31,850)
$ 11,085
$ (20,765)
1,603
(19,162)
(6,546)
(1,827)
$ (27,535)
(0.39)
$
(0.39)

$

Fourth
Quarter
$ 137,505
34,522
$
15,743
$
3,267
$
19,010
$
(471)
18,539
(6,106)
—
12,433
0.16

$
$

$

0.16

Revenues
Operating income (loss)
(Loss) income from continuing operations
Discontinued operations
Net (loss) income
Net loss (income) attributable to noncontrolling interests
Net (loss) income attributable to COPT
Preferred share dividends
Net (loss) income attributable to COPT common shareholders
Basic earnings per common share

Diluted earnings per common share

For the Year Ended December 31, 2011

First
Quarter
$ 126,320
$
787
$ (22,851)
1,584
$
$ (18,566)
1,204
(17,362)
(4,025)
$ (21,387)
(0.33)
$
(0.33)

$

Second
Quarter
$ 131,840
$ 16,600
(397)
$
$ (25,008)
$ (25,378)
1,964
(23,414)
(4,026)
$ (27,440)
(0.40)
$
(0.41)

$

Third
Quarter
$ 126,707
$ 27,400
1,669
$
5,801
$
7,470
$
(626)
6,844
(4,025)
2,819
0.04

$
$

$

0.04

Fourth
Quarter
$ 127,974
(9,007)
$
$ (60,325)
$ (30,781)
$ (91,102)
5,606
(85,496)
(4,026)
$ (89,522)
(1.26)
$
(1.26)

$

F-47

Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

The amounts reported above were revised for the error corrections described in Note 2. The tables below set forth the revisions 
to the selected quarterly information (the “Previously Reported” columns include the effects of other reclassifications and 
retrospective changes in presentation discussed in Note 2)(in thousands):

Income (loss) from continuing operations

Net income (loss)

Net (income) loss attributable to noncontrolling interests

Net income (loss) attributable to COPT

Net income (loss) attributable to COPT common 

shareholders

Basic and diluted earnings per common share

3/31/2012

Three Months Ended
6/30/2012

9/30/2012

Previously
Reported

As Revised

Previously
Reported

As Revised

Previously
Reported

As Revised

$

$

$

$

$

9,427

6,977

(300)

6,677

2,652

0.04

$

$

$

$

$

12,685

10,235

60

10,295

6,270

0.09

$

$

$

$

$

10,065

11,861

(1,107)

10,754

6,587

0.09

$

$

$

$

$

10,065

11,861

(556)

11,305

7,138

0.10

$

$

$

$

$

(31,850) $

(31,850)

(20,765) $

(20,765)

993

1,603

(19,772) $

(19,162)

(28,145) $

(27,535)

(0.39) $

(0.39)

3/31/2011

6/30/2011

9/30/2011

12/31/2011

Previously
Reported

As Revised

Previously
Reported

As Revised

Previously
Reported

As Revised

Previously
Reported

As Revised

Three Months Ended

(Loss) income from continuing 

operations

Net (loss) income

Net loss (income) attributable to 

noncontrolling interests

$

$

(22,851) $

(22,851) $

(1,026) $

(397) $

(18,566) $

(18,566) $

(26,007) $

(25,378) $

1,669

7,470

776

1,204

1,783

1,964

(904)

Net (loss) income attributable to COPT $

(17,790) $

(17,362) $

(24,224) $

(23,414) $

6,566

Net (loss) income attributable to COPT

common shareholders

Basic earnings per common share

Diluted earnings per common share

$

$

$

(21,815) $

(21,387) $

(28,250) $

(27,440) $

2,541

(0.33) $

(0.33) $

(0.42) $

(0.40) $

(0.33) $

(0.33) $

(0.42) $

(0.41) $

0.03

0.03

$

$

$

$

$

$

1,669

7,470

(626)

6,844

2,819

0.04

0.04

$

$

$

$

$

$

(56,438) $

(60,325)

(87,215) $

(91,102)

4,988

5,606

(82,227) $

(85,496)

(86,253) $

(89,522)

(1.21) $

(1.21) $

(1.26)

(1.26)

20.

Commitments and Contingencies

Litigation

In the normal course of business, we are involved in legal actions arising from our ownership and administration of 
properties.  We establish reserves for specific legal proceedings when we determine that the likelihood of an unfavorable 
outcome is probable and the amount of loss can be reasonably estimated.  Management does not anticipate that any liabilities 
that may result from such proceedings will have a materially adverse effect on our financial position, operations or liquidity. 
Our assessment of the potential outcomes of these matters involves significant judgment and is subject to change based on 
future developments.

Environmental

We are subject to various Federal, state and local environmental regulations related to our property ownership and 
operation.  We have performed environmental assessments of our properties, the results of which have not revealed any 
environmental liability that we believe would have a materially adverse effect on our financial position, operations or liquidity.

Joint Ventures

In connection with our 2005 contribution of properties to an unconsolidated partnership in which we hold a partnership 
interest, we entered into standard nonrecourse loan guarantees (environmental indemnifications and guarantees against fraud 
and misrepresentation, and springing guarantees of partnership debt in the event of a voluntary bankruptcy of the partnership).  
The maximum amount we could be required to pay under the guarantees is approximately $64 million.  We are entitled to 
recover 80% of any amounts paid under the guarantees from an affiliate of our partner pursuant to an indemnity agreement.  In 
2012, the holder of the mortgage debt encumbering all of the joint venture’s properties initiated foreclosure proceedings.

F-48

 
 
 
 
 
Corporate Office Properties Trust and Subsidiaries
Notes to Consolidated Financial Statements (Continued)

Management considered this event and estimates that the aggregate fair value of the guarantees would not exceed the amounts 
included in distributions received in excess of investment in unconsolidated real estate joint venture reported on the 
consolidated balance sheets.

We are party to a contribution agreement that formed a joint venture relationship with a limited partnership to develop up 

to 1.3 million square feet of office space on 92 acres of land located in Hanover, Maryland.  As we and the joint venture partner 
agree to proceed with the construction of buildings in the future, our joint venture partner would contribute land into newly-
formed entities and we would make cash capital contributions into such entities to fund development and construction activities 
for which financing is not obtained.  We owned a 50% interest in one such joint venture as of December 31, 2012.

We may be required to make our pro rata share of additional investments in our real estate joint ventures (generally based 
on our percentage ownership) in the event that additional funds are needed.  In the event that the other members of these joint 
ventures do not pay their share of investments when additional funds are needed, we may then deem it appropriate to make 
even larger investments in these joint ventures.

Tax Incremental Financing Obligation

In August 2010, Anne Arundel County, Maryland issued $30 million in tax incremental financing bonds to third-party 
investors in order to finance public improvements needed in connection with our project known as National Business Park 
North.  The real estate taxes on increases in assessed value of a development district encompassing National Business Park 
North are to be transferred to a special fund pledged to the repayment of the bonds.  We recognized a $3.6 million liability 
through December 31, 2012 representing the estimated fair value of our obligation to fund through a special tax any future 
shortfalls between debt service on the bonds and real estate taxes available to repay the bonds.

Ground Leases

We are obligated as lessee under ground leases with various lease expiration dates extending to the year 2100.  Future 

minimum rental payments due under the terms of these leases as of December 31, 2012 follow (in thousands):

Year Ending December 31,
2013
2014
2015
2016
2017
Thereafter

$

919
973
974
974
974
81,700
$ 86,514

Environmental Indemnity Agreement

We agreed to provide certain environmental indemnifications in connection with a lease and subsequent sale of three New 
Jersey properties. The prior owner of the properties, a Fortune 100 company that is responsible for groundwater contamination 
at such properties, previously agreed to indemnify us for (1) direct losses incurred in connection with the contamination and 
(2) its failure to perform remediation activities required by the State of New Jersey, up to the point that the state declares the 
remediation to be complete.  Under the environmental indemnification agreement, we agreed to the following:

•

•

•

to indemnify the tenant against losses covered under the prior owner’s indemnity agreement if the prior owner fails to 
indemnify the tenant for such losses.  This indemnification is capped at $5.0 million in perpetuity after the State of New 
Jersey declares the remediation to be complete;
to indemnify the tenant for consequential damages (e.g., business interruption) at one of the buildings in perpetuity and 
another of the buildings through 2025.  This indemnification is limited to $12.5 million; and
to pay 50% of additional costs related to construction and environmental regulatory activities incurred by the tenant as a 
result of the indemnified environmental condition of the properties.  This indemnification is limited to $300,000 annually 
and $1.5 million in the aggregate.

F-49

 
 
 
 
 
 
Corporate Office Properties Trust
Schedule III—Real Estate and Accumulated Depreciation
December 31, 2012
(Dollars in thousands) 

Property (Type) (1)

Location

Initial Cost

Gross Amounts Carried
At Close of Period

Encumbrances
(2)

Land

Building
and Land
Improvements

Costs
Capitalized
Subsequent
to Acquisition

Building
and Land
Improvements

Total
(3)(4)

Accumulated
Depreciation
(5)

Land

1000 Redstone Gateway (O)

Huntsville, AL

$

11,078 $

— $

18,582 $

— $

— $

18,582 $

18,582 $

1055 North Newport Road (O)(10)

Colorado Springs, CO

10807 New Allegiance Drive (O)(10) Colorado Springs, CO

1099 Winterson Road (O)

1100 Redstone Gateway (O)

Linthicum, MD

Huntsville, AL

114 National Business Parkway (O)

Annapolis Junction, MD

11751 Meadowville Lane (O)

1190 Winterson Road (O)

1199 Winterson Road (O)

1200 Redstone Gateway (O)

1201 M Street (O)

1201 Winterson Road (O)

1220 12th Street, SE (O)

1243 Winterson Road (L)

Richmond, VA

Linthicum, MD

Linthicum, MD

Huntsville, AL

Washington, DC

Linthicum, MD

Washington, DC

Linthicum, MD

12515 Academy Ridge View (O)(10) Colorado Springs, CO

1302 Concourse Drive (O)

1304 Concourse Drive (O)
1306 Concourse Drive (O)

Linthicum, MD

Linthicum, MD
Linthicum, MD

131 National Business Parkway (O)

Annapolis Junction, MD

132 National Business Parkway (O)

Annapolis Junction, MD

13200 Woodland Park Road (O)

Herndon, VA

133 National Business Parkway (O)

Annapolis Junction, MD

1331 Ashton Road (O)

1334 Ashton Road (O)

Hanover, MD

Hanover, MD

—

—

12,012

—

—

—

11,291

18,578

—

36,659

972

1,840

1,323

—

364

1,305

1,335

1,599

—

—

—

1,288

30,153

—

—

—

—
—

6,922

—

—

630

2,612

2,078

1,999
2,796

1,906

2,917

— 10,428

9,262

2,517

—

—

587

736

134 National Business Parkway (O)

Annapolis Junction, MD

19,200

3,684

1340 Ashton Road (O)

1341 Ashton Road (O)

1343 Ashton Road (O)

13450 Sunrise Valley Road (O)

Hanover, MD

Hanover, MD

Hanover, MD

Herndon, VA

13454 Sunrise Valley Road (O)
135 National Business Parkway (O)

Herndon, VA
Annapolis Junction, MD

1362 Mellon Road (O)

13857 McLearen Road (O)

Hanover, MD

Herndon, VA

140 National Business Parkway (O)

Annapolis Junction, MD

—

—

—

—

—
9,925

—

—

—

905

306

193

1,386

2,899
2,484

1,706

3,507

3,407

—

122

2,499

—

21

112

4,025

3,266

—

1,959

460

733

—

—

2,991

1,202
2,837

2,657

2,895

13,831

4,821

677

2,301

2,230

1,067

588

405

2,722

3,909
2,882

18

1,724

643

972

1,840

1,323

—

364

1,305

1,335

1,599

—

—

1,288

—

630

2,612

2,078

1,999
2,796

1,906

2,917

10,428

2,517

587

736

3,684

905

306

193

1,386

2,899
2,484

1,706

3,507

3,407

5,708

15,561

7,792

924

3,130

52,210

9,365

9,661

2,297

51,744

5,614

43,197

—

6,087

11,304

14,136
14,023

10,280

15,154

55,542

14,889

3,024

3,789

9,747

4,687

1,811

1,179

8,298

15,895
12,632

8,430

31,901

24,810

6,680

17,401

9,115

924

3,494

53,515

10,700

11,260

2,297

51,744

6,902

43,197

630

8,699

13,382

16,135
16,819

12,186

18,071

65,970

17,406

3,611

4,525

13,431

5,592

2,117

1,372

9,684

18,794
15,116

10,136

35,408

28,217

5,708

15,439

5,293

924

3,109

52,098

5,340

6,395

2,297

49,785

5,154

42,464

—

6,087

8,313

12,934
11,186

7,623

12,259

41,711

10,068

2,347

1,488

7,517

3,620

1,223

774

5,576

11,986
9,750

8,412

30,177

24,167

F-50

—
(178)
(298)
(3,348)
—
(878)
(7,278)
(5,111)
(4,665)
—
(3,939)
(2,068)
(3,914)
—
(441)
(4,626)
(4,657)
(4,998)
(3,876)
(6,563)
(19,432)
(6,167)
(939)
(1,468)
(4,138)
(1,874)
(727)
(435)
(2,853)
(4,605)
(4,932)
(841)
(973)
(5,748)

Year Built or
Renovated

(7)

2007-2008

2009

1988

(7)

2002

2007

1987

1988

(7)

2001

1985

2003

(8)

2006

1996

2002
1990

1990

2000

2002

1997

1989

1989

1999

1989

1989

1989

1998

1998
1998

2006

2007

2003

Date
Acquired
(6)

3/23/2010

5/19/2006

9/28/2005

4/30/1998

3/23/2010

6/30/2000

9/15/2006

4/30/1998

4/30/1998

3/23/2010

9/28/2010

4/30/1998

9/28/2010

12/19/2001

6/26/2009

11/18/1999

11/18/1999
11/18/1999

9/28/1998

5/28/1999

6/2/2003

9/28/1998

4/28/1999

4/28/1999

11/13/1998

4/28/1999

4/28/1999

4/28/1999

7/25/2003

7/25/2003
12/30/1998

2/10/2006

7/11/2012

12/31/2003

Property (Type) (1)

Location

141 National Business Parkway (O)
14280 Park Meadow Drive (O)

Annapolis Junction, MD
Chantilly, VA

1460 Dorsey Road (L)

Hanover, MD

14840 Conference Center Drive (O)

Chantilly, VA

14850 Conference Center Drive (O)

Chantilly, VA

14900 Conference Center Drive (O)

Chantilly, VA

15000 Conference Center Drive (O)

Chantilly, VA

1501 South Clinton Street (O)

Baltimore, MD

15010 Conference Center Drive (O)

Chantilly, VA

15049 Conference Center Drive (O)

Chantilly, VA

15059 Conference Center Drive (O)

Chantilly, VA

1550 West Nursery Road (O)

1550 Westbranch Drive (O)

1560A Cable Ranch Road (O)

1560B Cable Ranch Road (O)

16442 Commerce Drive (O)

16480 Commerce Drive (O)

16501 Commerce Drive (O)

16539 Commerce Drive (O)

16541 Commerce Drive (O)

16543 Commerce Drive (O)

Linthicum, MD

McLean, VA

San Antonio, TX

San Antonio, TX

Dahlgren, VA

Dahlgren, VA

Dahlgren, VA

Dahlgren, VA

Dahlgren, VA

Dahlgren, VA

1670 North Newport Road (O)(10)

Colorado Springs, CO

1751 Pinnacle Drive (O)

1753 Pinnacle Drive (O)

1915 Aerotech Drive (O)

1925 Aerotech Drive (O)

201 Technology Drive (O)

206 Research Boulevard (O)

209 Research Boulevard (O)

210 Research Boulevard (O)

22289 Exploration Drive (O)

22299 Exploration Drive (O)

22300 Exploration Drive (O)

22309 Exploration Drive (O)
23535 Cottonwood Parkway (O)

2500 Riva Road (O)

McLean, VA

McLean, VA

Colorado Springs, CO

Colorado Springs, CO

Lebanon, VA

Aberdeen, MD

Aberdeen, MD

Aberdeen, MD

Lexington Park, MD

Lexington Park, MD

Lexington Park, MD

Lexington Park, MD
California, MD

Annapolis, MD

Initial Cost

Gross Amounts Carried
At Close of Period

Encumbrances
(2)

Land

Building
and Land
Improvements

Costs
Capitalized
Subsequent
to Acquisition

Building
and Land
Improvements

Total
(3)(4)

Accumulated
Depreciation
(5)

Land

Year Built or
Renovated

9,725
—

—

—

—

—

54,000

2,398
3,731

1,800

1,572

1,615

3,436

5,193

— 27,964

96,000

—

—

3,500

4,415

5,753

— 14,071

—

—

—

2,305

—

1,885

—

—

1,571

4,383

30,283

24,438

3,394

3,717

—

—

—

—

—

—

—

—
—

—

5,595

1,097

2,299

613

1,856

522

688

773

436

853

10,486

8,275

556

556

726

1,813

1,045

1,065

1,422

1,362

1,094

2,243
692

2,791

2,098

1,737

2,251

2,389
1,009

—

508

539

3,560

18,198

2,398
3,731

1,800

1,572

1,615

3,436

5,193

5,222

27,964

344

726

1,423

3,500

4,415

5,753

— 14,071

116

28

11

555

164

185

1,443

1,321

12

763

12,461

8,736

539

343

60

—

—

—

1,005

682

169

227
223

1

5,096

306

1,075

5,595

1,097

2,299

613

1,856

522

688

773

436

853

10,486

8,275

556

556

726

1,813

1,045

1,065

1,422

1,362

1,094

2,243
692

2,791

2,098

1,737

2,251

11,979
16,962

—

8,683

8,897

17,962

65,243

55,637

42,265

21,091

15,038

16,930

26,328

3,798

6,556

3,137

7,589

2,275

4,303

4,415

1,754

5,951

54,800

43,089

3,633

3,410

31,151

17,334

16,063

13,144

6,724

6,473

5,207

10,646
3,274

12,146

22,430

15,572

22,686

14,377
20,693

1,800

10,255

10,512

21,398

70,436

83,601

45,765

25,506

20,791

31,001

31,923

4,895

8,855

3,750

9,445

2,797

4,991

5,188

2,190

6,804

65,286

51,364

4,189

3,966

31,877

19,147

17,108

14,209

8,146

7,835

6,301

12,889
3,966

14,937

24,528

17,309

24,937

(4,354)
(4,529)
—
(3,385)
(3,434)
(5,796)
(20,752)
(5,696)
(6,503)
(7,276)
(4,891)
(1,862)
(2,354)
(667)
(1,120)
(761)
(1,649)
(594)
(1,224)
(1,149)
(349)
(776)
(16,190)
(10,657)
(1,037)
(759)
(4,021)
(107)
(859)
(519)
(1,951)
(2,026)
(1,569)
(3,459)
(789)
(3,384)
(5,167)
(5,403)
(7,961)

1990
1999

(8)

2000

2000

1999

1989

2006

2006

1997

2000

2009

2002

1985/2007

1985/2006

2002

2000

2002

1990

1996

2002

1986/1987

1989/1995

1976/2004

1985

1985

2007

2012

2010

2010

2000

1998

1997

1984/1997
1984

2000

2005

2001

2002

9,590
15,953

—

8,175

8,358

14,402

47,045

50,415

41,921

20,365

13,615

16,930

26,212

3,770

6,545

2,582

7,425

2,090

2,860

3,094

1,742

5,188

42,339

34,353

3,094

3,067

31,091

17,334

16,063

13,144

5,719

5,791

5,038

10,419
3,051

12,145

17,334

15,266

21,611

F-51

Date
Acquired
(6)

9/28/1998
9/29/2004

2/28/2006

7/25/2003

7/25/2003

7/25/2003

11/30/2001

10/27/2009

11/30/2001

8/14/2002

8/14/2002

10/28/2009

6/28/2010

6/19/2008

6/19/2008

12/21/2004

12/28/2004

12/21/2004

12/21/2004

12/21/2004

12/21/2004

9/30/2005

9/23/2004

9/23/2004

6/8/2006

6/8/2006

10/5/2007

9/14/2007

9/14/2007

9/14/2007

3/24/2004

3/24/2004

11/9/2004

3/24/2004
3/24/2004

3/4/2003

5/26/2000

5/26/2000

11/13/2000

2691 Technology Drive (O)

Annapolis Junction, MD

2701 Technology Drive (O)

Annapolis Junction, MD

2711 Technology Drive (O)

Annapolis Junction, MD

24,000

13,794

19,359

Property (Type) (1)

Location

2720 Technology Drive (O)
2721 Technology Drive (O)

2730 Hercules Road (O)

Annapolis Junction, MD
Annapolis Junction, MD

Annapolis Junction, MD

2900 Towerview Road (O)

Herndon, VA

300 Sentinel Drive (O)

302 Sentinel Drive (O)

304 Sentinel Drive (O)

306 Sentinel Drive (O)

308 Sentinel Drive (O)

Annapolis Junction, MD

Annapolis Junction, MD

Annapolis Junction, MD

Annapolis Junction, MD

Annapolis Junction, MD

310 The Bridge Street (O)

Huntsville, AL

312 Sentinel Way (O)

Annapolis Junction, MD

3120 Fairview Park Drive (O)

Falls Church, VA

314 Sentinel Way (O)

316 Sentinel Way (O)

318 Sentinel Way (O)

320 Sentinel Way (O)

322 Sentinel Way (O)

324 Sentinel Way (O)

Annapolis Junction, MD

Annapolis Junction, MD

Annapolis Junction, MD

Annapolis Junction, MD

Annapolis Junction, MD

Annapolis Junction, MD

3535 Northrop Grumman Pt. (O)(10) Colorado Springs, CO

375 West Padonia Road (O)

Timonium, MD

410 National Business Parkway (O)

Annapolis Junction, MD

420 National Business Parkway (O)

Annapolis Junction, MD

4230 Forbes Boulevard (O)(10)

Lanham, MD

430 National Business Parkway (O)

Annapolis Junction, MD

44408 Pecan Court (O)

44414 Pecan Court (O)

44417 Pecan Court (O)

44420 Pecan Court (O)

44425 Pecan Court (O)

45310 Abell House Lane (O)

46579 Expedition Drive (O)

46591 Expedition Drive (O)

California, MD

California, MD

California, MD

California, MD

California, MD

California, MD

Lexington Park, MD

Lexington Park, MD

4851 Stonecroft Boulevard (O)

Chantilly, VA

4940 Campbell Drive (O)
4969 Mercantile Road (O)

4979 Mercantile Road (O)

5020 Campbell Boulevard (O)

5022 Campbell Boulevard (O)

5024 Campbell Boulevard (O)

White Marsh, MD
White Marsh, MD

White Marsh, MD

White Marsh, MD

White Marsh, MD

White Marsh, MD

Initial Cost

Gross Amounts Carried
At Close of Period

Encumbrances
(2)

Land

Building
and Land
Improvements

Costs
Capitalized
Subsequent
to Acquisition

Building
and Land
Improvements

Total
(3)(4)

Accumulated
Depreciation
(5)

Land

Year Built or
Renovated

24,068
—

32,734

—

—

22,693

37,280

20,973

—

—

—

—

—

—

22,240

—

21,912

—

17,982

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—
—

—

—

—

—

3,863
4,611

8,737

3,207

1,517

2,648

3,411

3,260

1,422

261

3,138

6,863

1,254

2,748

2,185

2,067

2,605

1,656

—

2,483

1,831

2,370

511

1,852

817

405

434

344

1,309

2,272

1,406

1,200

1,878

1,379
1,308

1,299

1,014

624

767

29,272
14,597

31,612

16,344

58,642

29,398

24,917

22,592

26,197

26,576

9,128

35,606

1,325

31,861

28,426

21,623

22,827

23,005

18,388

10,415

16,569

15,673

4,346

21,038

1,583

1,619

1,939

890

3,506

13,794

5,796

7,199

11,558

3,858
4,456

4,686

3,136

1,924

2,420

F-52

88
1,497

5,277

5,607

119

380

132

110

—

26

—

5,406

—

131

—

—

—

—

121

4,821

—

—

192

—

118

336

88

126

1,217

—

1,078

656

21

987
62

84

781

332

250

3,863
4,611

8,737

3,207

1,517

2,648

3,411

3,260

1,422

261

3,138

6,863

1,254

2,748

2,185

2,067

2,605

1,656

—

2,483

1,831

2,370

511

1,852

817

405

434

344

1,309

2,272

1,406

1,200

1,878

1,379
1,308

1,299

1,014

624

767

29,360
16,094

36,889

21,951

58,761

29,778

25,049

22,702

26,197

26,602

9,128

41,012

1,325

31,992

28,426

21,623

22,827

23,005

18,509

15,236

16,569

15,673

4,538

21,038

1,701

1,955

2,027

1,016

4,723

33,223
20,705

45,626

25,158

60,278

32,426

28,460

25,962

27,619

26,863

12,266

47,875

2,579

34,740

30,611

23,690

25,432

24,661

18,509

17,719

18,400

18,043

5,049

22,890

2,518

2,360

2,461

1,360

6,032

13,794

16,066

6,874

7,855

8,280

9,055

11,579

13,457

4,845
4,518

4,770

3,917

2,256

2,670

6,224
5,826

6,069

4,931

2,880

3,437

(6,102)
(4,841)
(11,825)
(3,785)
(4,026)
(3,642)
(4,361)
(3,541)
(1,085)
(2,028)
—
(2,247)
(149)
(830)
(4,849)
(2,688)
(3,431)
(1,352)
(1,555)
(5,242)
(34)
—
(1,837)
(449)
(161)
(475)
(636)
(90)
(921)
(368)
(2,147)
(1,083)
(2,379)
(933)
(678)
(727)
(673)
(496)
(702)

Date
Acquired
(6)

1/31/2002
10/21/1999

9/28/1998

2004
2000

1990

1982/2008

12/20/2005

2009

2007

2005

2006

2010

2009

(7)

2008

2008

2011

2005

2007

2006

2010

2008

1986

2012

(7)

2003

2011

1986

1986

1989

1989

1997

2011

2002

2005

2004

1990
1983

1985

1986-1988

1986-1988

1986-1988

11/14/2003

11/14/2003

11/14/2003

11/14/2003

11/14/2003

8/4/2011

11/14/2003

11/23/2010

11/14/2003

11/14/2003

11/14/2003

11/14/2003

11/14/2003

6/29/2006

6/10/2008

12/21/1999

6/29/2003

6/29/2006

12/24/2002

6/29/2006

3/24/2004

3/24/2004

3/24/2004

11/9/2004

5/5/2004

8/30/2010

3/24/2004

3/24/2004

8/14/2002

1/9/2007
1/9/2007

1/9/2007

1/9/2007

1/9/2007

1/9/2007

Property (Type) (1)

Location

5026 Campbell Boulevard (O)
525 Babcock Road (O)(10)

5325 Nottingham Drive (O)

5355 Nottingham Drive (O)

5520 Research Park Drive (O)

5522 Research Park Drive (O)

White Marsh, MD
Colorado Springs, CO

White Marsh, MD

White Marsh, MD

Catonsville, MD

Catonsville, MD

565 Space Center Drive (O)(10)

Colorado Springs, CO

5725 Mark Dabling Boulevard (O)

Colorado Springs, CO

5755 Mark Dabling Boulevard (O)

Colorado Springs, CO

5775 Mark Dabling Boulevard (O)

Colorado Springs, CO

5825 University Research Court (O)

College Park, MD

5850 University Research Court (O)

College Park, MD

655 Space Center Drive (O)(10)

Colorado Springs, CO

6700 Alexander Bell Drive (O)

6708 Alexander Bell Drive (O)

Columbia, MD

Columbia, MD

6711 Columbia Gateway Drive (O)

Columbia, MD

6716 Alexander Bell Drive (O)

Columbia, MD

6721 Columbia Gateway Drive (O)

Columbia, MD

6724 Alexander Bell Drive (O)

Columbia, MD

6731 Columbia Gateway Drive (O)

Columbia, MD

6740 Alexander Bell Drive (O)

Columbia, MD

6741 Columbia Gateway Drive (O)

Columbia, MD

6750 Alexander Bell Drive (O)

6760 Alexander Bell Drive (O)

Columbia, MD

Columbia, MD

6940 Columbia Gateway Drive (O)

Columbia, MD

6950 Columbia Gateway Drive (O)

Columbia, MD

7000 Columbia Gateway Drive (O)

Columbia, MD

7015 Albert Einstein Drive (O)

Columbia, MD

7061 Columbia Gateway Drive (O)

Columbia, MD

7063 Columbia Gateway Drive (O)

Columbia, MD

7065 Columbia Gateway Drive (O)

Columbia, MD

7067 Columbia Gateway Drive (O)

Columbia, MD

7125 Columbia Gateway Drive (L)

Columbia, MD

7125 Columbia Gateway Drive (O)
7130 Columbia Gateway Drive (O)

Columbia, MD
Columbia, MD

7134 Columbia Gateway Drive (O)

Columbia, MD

7138 Columbia Gateway Drive (O)

Columbia, MD

7142 Columbia Gateway Drive (O)

Columbia, MD

7150 Columbia Gateway Drive (O)

Columbia, MD

Initial Cost

Gross Amounts Carried
At Close of Period

Encumbrances
(2)

Land

Building
and Land
Improvements

Costs
Capitalized
Subsequent
to Acquisition

Building
and Land
Improvements

Total
(3)(4)

Accumulated
Depreciation
(5)

Land

—
—

—

—

—

—

—

12,882

10,208

12,477

16,292

22,183

—

4,000

6,320

—

—

29,252

10,939

—

—

—

—

—

17,300

—

15,800

2,486

—

—

—

—

—

33,779
6,519

2,949

5,406

6,280

4,850

700
355

816

761

—

—

644

900

799

1,035

—

—

745

1,755

897

2,683

1,242

1,753

449

2,807

1,424

675

1,263

890

3,545

3,596

3,131

2,058

729

902

919

1,829

3,361

17,126
1,350

704

1,104

1,342

1,032

2,138
397

3,976

3,562

20,066

4,550

6,284

11,397

10,324

12,440

22,190

30,273

15,445

7,019

3,588

23,239

4,969

34,090

5,039

19,098

5,696

1,711

12,461

3,561

9,916

14,269

12,103

6,093

3,094

3,684

3,763

11,823

128

46,994
4,359

1,971

3,518

3,978

3,429

F-53

45
79

485

1,616

—

—

352

2,832

3,597

1,658

11

57

59

4,628

1,592

314

2,525

—

579

1,648

3,045

114

3,351

1,979

3,162

1,033

622

826

571

1,043

1,263

2,415

279

6,583
1,784

299

1,961

1,326

321

700
355

816

761

—

—

644

900

799

1,035

—

—

745

1,755

897

2,683

1,242

1,753

449

2,807

1,424

675

1,263

890

3,545

3,596

3,131

2,058

729

902

919

1,829

3,361

17,126
1,350

704

1,104

1,342

1,032

2,183
476

4,461

5,178

2,883
831

5,277

5,939

20,066

20,066

4,550

6,636

14,229

13,921

14,098

22,201

30,330

15,504

11,647

5,180

23,553

7,494

34,090

5,618

20,746

8,741

1,825

15,812

5,540

13,078

15,302

12,725

6,919

3,665

4,727

5,026

14,238

407

53,577
6,143

2,270

5,479

5,304

3,750

4,550

7,280

15,129

14,720

15,133

22,201

30,330

16,249

13,402

6,077

26,236

8,736

35,843

6,067

23,553

10,165

2,500

17,075

6,430

16,623

18,898

15,856

8,977

4,394

5,629

5,945

16,067

3,768

70,703
7,493

2,974

6,583

6,646

4,782

Year Built or
Renovated

1986-1988
1967

2002

2005

2009

2007

2009

1984

1989

1984

2008

2008

2008

1988

1988

2006-2007

1990

2009

2001

2002

1992

2008

2001

1991

1999

1998

1999

1999

2000

2000

2000

2001

(396)
(89)
(763)
(1,380)
(1,679)
(614)
(107)
(4,567)
(3,464)
(4,260)
(2,118)
(2,236)
—
(4,568)
(2,440)
(3,503)
(3,394)
(3,233)
(1,787)
(6,546)
(3,933)
(195)
(5,893)
(2,582)
(5,274)
(5,975)
(3,246)
(2,179)
(1,460)
(2,058)
(1,923)
(4,340)

— 1973/1999(8)

(10,556)
(1,577)
(499)
(2,174)
(1,406)
(867)

1973/1999
1989

1990

1990

1994

1991

Date
Acquired
(6)

1/9/2007
7/12/2007

1/9/2007

1/9/2007

4/4/2006

3/8/2006

7/8/2005

5/18/2006

5/18/2006

5/18/2006

1/29/2008

1/29/2008

7/8/2005

5/14/2001

5/14/2001

9/28/2000

12/31/1998

9/28/2000

5/14/2001

3/29/2000

12/31/1998

9/28/2000

12/31/1998

12/31/1998

11/13/1998

10/22/1998

5/31/2002

12/1/2005

8/30/2001

8/30/2001

8/30/2001

8/30/2001

6/29/2006

6/29/2006
9/19/2005

9/19/2005

9/19/2005

9/19/2005

9/19/2005

Property (Type) (1)

Location

7150 Riverwood Drive (O)
7160 Riverwood Drive (O)

7170 Riverwood Drive (O)

7175 Riverwood Drive (O)

7200 Redstone Gateway (O)

7200 Riverwood Road (O)

7205 Riverwood Drive (O)

7272 Park Circle Drive (O)

7318 Parkway Drive (O)

7320 Parkway Drive (O)

Columbia, MD
Columbia, MD

Columbia, MD

Columbia, MD

Huntsville, MD

Columbia, MD

Columbia, MD

Hanover, MD

Hanover, MD

Hanover, MD

745 Space Center Drive (O)(10)

Colorado Springs, CO

7467 Ridge Road (O)

7700 Potranco Road (O)

7700-1 Potranco Road (O)

7700-5 Potranco Road (O)

7740 Milestone Parkway (O)

7770 Backlick Road (O)

800 International Drive (O)

8000 Potranco Road (O)

8003 Corporate Drive (O)

8007 Corporate Drive (O)

8010 Corporate Drive (O)

8013 Corporate Drive (O)

8015 Corporate Drive (O)

8019 Corporate Drive (O)

8020 Corporate Drive (O)

8023 Corporate Drive (O)

8030 Potranco Road (O)

8094 Sandpiper Circle (O)

8098 Sandpiper Circle (O)

8100 Potranco Road (L)

8110 Corporate Drive (O)

8140 Corporate Drive (O)

849 International Drive (O)
8621 Robert Fulton Drive (O)

8661 Robert Fulton Drive (O)

8671 Robert Fulton Drive (O)

870 Elkridge Landing Road (O)

881 Elkridge Landing Road (O)

Hanover, MD

San Antonio, TX

San Antonio, TX

San Antonio, TX

Hanover, MD

Springfield, VA

Linthicum, MD

San Antonio, TX

White Marsh, MD

White Marsh, MD

White Marsh, MD

White Marsh, MD

White Marsh, MD

White Marsh, MD

White Marsh, MD

White Marsh, MD

San Antonio, TX

White Marsh, MD

White Marsh, MD

San Antonio, TX

White Marsh, MD

White Marsh, MD

Linthicum, MD
Columbia, MD

Columbia, MD

Columbia, MD

Linthicum, MD

Linthicum, MD

Initial Cost

Gross Amounts Carried
At Close of Period

Encumbrances
(2)

Land

Building
and Land
Improvements

Costs
Capitalized
Subsequent
to Acquisition

Building
and Land
Improvements

Total
(3)(4)

Accumulated
Depreciation
(5)

Land

Year Built or
Renovated

—
—

—

—

—

—

—

5,232

—

7,000

—

—

1,821
2,732

1,283

1,788

—

4,089

1,367

1,479

972

905

654

1,629

— 14,020

—

—

17,548

931

8,408

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

11,692
11,000

6,200

7,600

18,900

11,812

—

—

3,825

6,387

775

1,964

611

1,434

1,349

642

446

680

2,184

651

1,964

1,960

1,797

1,964

2,285

2,158

1,356
2,317

1,510

1,718

2,003

1,034

4,388
7,006

3,096

4,133

4,531

16,356

14,300

6,300

3,888

3,570

7,521

6,517

38,804

1,066

1,884

34,363

71,600

3,099

21,178

1,611

3,336

3,262

1,536

1,116

1,898

3,767

1,603

21,298

3,716

3,651

1,396

10,117

8,457

5,426
12,642

3,764

4,280

9,442

4,137

F-54

972
1,503

594

—

—

3,001

—

1,798

812

1,575

15

1,924

7

—

—

61

8

947

—

53

307

1,672

1,809

243

738

2,199

5

—

369

633

—

489

2,018

3,081
199

1,042

1,941

6,689

1,049

1,821
2,732

1,283

1,788

—

4,089

1,367

1,479

972

905

654

1,629

14,020

—

—

3,825

6,387

775

1,964

611

1,434

1,349

642

446

680

2,184

651

1,964

1,960

1,797

1,964

2,285

2,158

1,356
2,317

1,510

1,718

2,003

1,034

5,360
8,509

3,690

4,133

4,531

19,357

14,300

8,098

4,700

5,145

7,536

8,441

38,811

1,066

1,884

34,424

71,608

4,046

21,178

1,664

3,643

4,934

3,345

1,359

2,636

5,966

1,608

7,181
11,241

4,973

5,921

4,531

23,446

15,667

9,577

5,672

6,050

8,190

10,070

52,831

1,066

1,884

38,249

77,995

4,821

23,142

2,275

5,077

6,283

3,987

1,805

3,316

8,150

2,259

21,298

23,262

4,085

4,284

1,396

10,606

10,475

8,507
12,841

4,806

6,221

16,131

5,186

6,045

6,081

3,360

12,891

12,633

9,863
15,158

6,316

7,939

18,134

6,220

(1,163)
(2,688)
(726)
—

—
(6,741)
—
(1,663)
(1,582)
(1,557)
(171)
(3,346)
(5,703)
(108)
(154)
(2,265)
(157)
(1,662)
(1,149)
(311)
(727)
(842)
(432)
(306)
(555)
(954)
(267)
(1,148)
(820)
(558)
—
(2,202)
(3,046)
(4,043)
(2,314)
(1,518)
(2,148)
(7,148)
(1,991)

2000
2000

2000

1996(7)

(7)

1986

(7)

1991/1996

1984

1983

2006

1990

1982/1985

2007

2009

2009

2012(7)

1988

2010

1999

1995

1998

1990

1990

1990

1997

1990

2010

1998

1998

(8)

2001

2003

1988
2005-2006

2002

2002

1981

1986

Date
Acquired
(6)

1/10/2007
1/10/2007

1/10/2007

7/27/2005

3/23/2010

10/13/1998

7/27/2005

1/10/2007

4/16/1999

4/4/2002

7/8/2005

4/28/1999

3/30/2005

3/30/2005

3/30/2005

7/2/2007

3/10/2010

4/30/1998

1/20/2006

1/9/2007

1/9/2007

1/9/2007

1/9/2007

1/9/2007

1/9/2007

1/9/2007

1/9/2007

1/20/2006

1/9/2007

1/9/2007

6/14/2005

1/9/2007

1/9/2007

2/23/1999
6/10/2005

12/30/2003

12/30/2003

8/3/2001

4/30/1998

Initial Cost

Gross Amounts Carried
At Close of Period

Encumbrances
(2)

Land

Building
and Land
Improvements

Costs
Capitalized
Subsequent
to Acquisition

Building
and Land
Improvements

Total
(3)(4)

Accumulated
Depreciation
(5)

Land

Year Built or
Renovated

Date
Acquired
(6)

—
—

8,008

—

—

—

—

8,488

—

—

—

—

—

—

—

—

1,165
1,993

981

1,156

1,215

2,081

1,044

1,013

1,209

939

1,104

6,050

3,415

526

777

979

1,219

1,058

1,129

1,137

1,052

1,854

877

695

466

1,401

1,187

900

Property (Type) (1)

Location

891 Elkridge Landing Road (O)
900 Elkridge Landing Road (O)

900 International Drive (O)

901 Elkridge Landing Road (O)

911 Elkridge Landing Road (O)

920 Elkridge Landing Road (O)

921 Elkridge Landing Road (O)

930 International Drive (O)

938 Elkridge Landing Road (O)

939 Elkridge Landing Road (O)

940 Elkridge Landing Road (L)

9651 Hornbaker Road (D)

9690 Deereco Road (O)

Linthicum, MD
Linthicum, MD

Linthicum, MD

Linthicum, MD

Linthicum, MD

Linthicum, MD

Linthicum, MD

Linthicum, MD

Linthicum, MD

Linthicum, MD

Linthicum, MD

Manassas, VA

Timonium, MD

980 Technology Court (O)(10)

Colorado Springs, CO

985 Space Center Drive (O)(10)

Colorado Springs, CO

9900 Franklin Square Drive (O)

White Marsh, MD

9910 Franklin Square Drive (O)

White Marsh, MD

5,040

9920 Franklin Square Drive (O)

White Marsh, MD

9925 Federal Drive (O)(10)

Colorado Springs, CO

9930 Franklin Square Drive (O)

White Marsh, MD

9940 Franklin Square Drive (O)

White Marsh, MD

9945 Federal Drive (O)(10)

9950 Federal Drive (O)(10)

9960 Federal Drive (O)(10)

9965 Federal Drive (L)(10)

9965 Federal Drive (O)(10)

Colorado Springs, CO

Colorado Springs, CO

Colorado Springs, CO

Colorado Springs, CO

Colorado Springs, CO

—

—

—

—

—

—

—

—

—

999 Corporate Boulevard (O)

Linthicum, MD

Aerotech Commerce (L)

Colorado Springs, CO

13,533

—

Arborcrest (O)

Arundel Preserve (L)

Ashburn Crossing - DC-8 (O)

Ashburn Crossing - DC-9 (O)

Ashburn Crossing (L)

Blue Bell, PA

Hanover, MD

Ashburn, VA

Ashburn, VA

Ashburn, VA

Canton Crossing Land (L)
Canton Crossing Util Distr Ctr (O)

Baltimore, MD
Baltimore, MD

Columbia Gateway - Southridge (L)

Columbia, MD

Dahlgren Technology Center (L)

Dahlgren, VA

Expedition VII (L)

Indian Head (L)

Lexington Park, MD

Bryans Road, MD

— 21,969

—

—

—

—

—

7,291

4,192

4,309

— 16,085
7,300
—

—

—

—

—

6,387

1,083

705

6,436

4,772
7,972

3,922

4,437

4,861

9,683

4,176

4,053

4,748

3,756

4,718

196,428

13,723

2,046

12,287

3,466

6,590

5,293

4,334

3,921

3,382

849

5,045

2,286

—

6,061

8,332

—

83,529

5,886

—

—

3

1,820
15,550

2,938

178

726

—

F-55

1,777
2,887

834

1,558

2,024

687

639

1,100

476

1,790

170

253

5,833

442

1,569

202

65

1,429

80

36

281

—

1,501

291

—

565

556

—

1,165
1,993

981

1,156

1,215

2,081

1,044

1,013

1,209

939

1,104

6,050

3,415

526

777

979

1,219

1,058

1,129

1,137

1,052

1,854

877

695

466

1,401

1,187

900

1,094

21,969

—

—

—

—

—

7,291

4,192

4,309

— 16,085
7,300
722

—

—

—

—

6,387

1,083

705

6,436

6,549
10,859

4,756

5,995

6,885

7,714
12,852

5,737

7,151

8,100

10,370

12,451

4,815

5,153

5,224

5,546

4,888

5,859

6,166

6,433

6,485

5,992

196,681

202,731

19,556

2,488

13,856

3,668

6,655

6,722

4,414

3,957

3,663

849

6,546

2,577

—

6,626

8,888

—

84,623

5,886

—

—

3

1,820
16,272

2,938

178

726

—

22,971

3,014

14,633

4,647

7,874

7,780

5,543

5,094

4,715

2,703

7,423

3,272

466

8,027

10,075

900

106,592

5,886

7,291

4,192

4,312

17,905
23,572

9,325

1,261

1,431

6,436

(2,674)
(4,722)
(1,964)
(2,148)
(2,789)
(4,084)
(1,989)
(2,203)
(1,615)
(2,452)
(4,884)
(2,809)
(7,927)
(585)
(2,948)
(734)
(1,457)
(1,470)
(97)
(795)
(732)
(13)
(1,944)
(256)
—
(907)
(3,230)
—
(2,686)
—

—

—

—

—
(1,655)
—

—

—

—

1984
1982

1986

1984

1985

1982

1983

1986

1984

1983

(8)

2010

1988

1995

1989

1999

2005

2006

2008

2001

2000

2009

2001

2001

(8)

1983/2007

2000

(8)

7/2/2001
4/30/1998

4/30/1998

7/2/2001

4/30/1998

7/2/2001

4/30/1998

4/30/1998

7/2/2001

4/30/1998

7/2/2001

9/14/2010

12/21/1999

9/28/2005

9/28/2005

1/9/2007

1/9/2007

1/9/2007

9/28/2005

1/9/2007

1/9/2007

9/28/2005

12/22/2005

12/22/2005

12/22/2005

1/19/2006

8/1/1999

5/19/2006

1991(6)(7)

10/14/1997

(8)

(7)

(7)

(8)

(8)
2005

(8)

(8)

(8)

(8)

(9)

12/27/2012

12/27/2012

12/27/2012

10/27/2009
10/27/2009

9/20/2004

3/16/2005

3/24/2004

10/23/2006

Property (Type) (1)

Location

InterQuest (L)

Colorado Springs, CO

M Square Research Park (L)

College Park, MD

National Business Park (L)

Annapolis Junction, MD

National Business Park North (L)

Jessup, MD

North Gate Business Park (L)

Aberdeen, MD

Northwest Crossroads (L)

Old Annapolis Road (O)

Patriot Park (L)

Patriot Ridge (L)

Redstone Gateway (L)

Route 15/Biggs Ford Road (L)

Sentry Gateway (L)

West Nursery Road (L)

Westfields - Park Center (L)

Westfields Corporate Center (L)

White Marsh (L)

Woodland Park (L)

San Antonio, TX

Columbia, MD

Colorado Springs, CO

Springfield, VA

Huntsville, AL

Frederick, MD

San Antonio, TX

Linthicum, MD

Herndon, VA

Herndon, VA

White Marsh, MD

Herndon, VA

Other Developments, including 

intercompany eliminations (V)

Various

— 14,515

—

—

—

2,372

— 25,654

—

—

—

—

6,486

7,430

1,637

8,768

— 18,517

—

—

—

—

—

—

—

8,703

8,275

1,441

3,609

7,141

— 30,322

9,614

—

—

Initial Cost

Gross Amounts Carried
At Close of Period

Encumbrances
(2)

Land

Building
and Land
Improvements

Costs
Capitalized
Subsequent
to Acquisition

Building
and Land
Improvements

Total
(3)(4)

Accumulated
Depreciation
(5)

Land

Year Built or
Renovated

8

3,602

6,354

25,069

10,717

836

5,500

248

10,873

13,700

526

3,621

53

2,640

1,342

10,385

81

— 14,515

—

—

—

2,372

— 25,654

—

—

2,103

—

6,486

7,430

1,637

8,768

— 18,517

—

—

—

—

—

—

—

8,703

8,275

1,441

3,609

7,141

— 30,322

—

9,614

8

14,523

3,602

6,354

25,069

10,717

836

7,603

248

10,873

13,700

526

3,621

53

2,640

1,342

10,385

81

3,602

8,726

50,723

17,203

8,266

9,240

9,016

29,390

13,700

9,229

11,896

1,494

6,249

8,483

40,707

9,695

—

—

—

—

—

—
(2,333)
—

—

—

—

—

—

—

—

—

—

Date
Acquired
(6)

9/28/2005

1/29/2008

11/14/2003

6/29/2006

9/14/2007

1/20/2006

(8)

(8)

(8)

(8)

(8)

(8)

1974/1985

12/14/2000

(8)

(8)

(8)

(8)

(8)

(8)

(8)

(8)

(8)

(8)

7/8/2005

3/10/2010

3/23/2010

8/28/2008

3/30/2005

10/28/2009

7/18/2002

7/31/2002

1/9/2007

4/29/2004

7

(152)

(438)

7

(590)

(583)

689

Various

Various

(1) A legend for the Property Type follows:  (O) = Office Property; (L) = Land held or pre-construction; (D) = Data Center; and (V) = Various.
(2) Excludes our  term loan facilities of $770.0 million, senior exchangeable notes of $230.9 million, unsecured notes payable of $1.8 million, and net premiums on the remaining loans of $1.3 million.
(3) The aggregate cost of these assets for Federal income tax purposes was approximately $3.4 billion at December 31, 2012.
(4) As discussed in Note 5 to our Consolidated Financial Statements, we recognized impairment losses of $46.1 million in connection with our property in Greater Philadelphia, Pennsylvania and $19.0 million, including 

$

1,015,130 $681,001 $

2,893,547 $

285,412 $ 681,001 $

3,178,959 $3,859,960 $

(568,176)

exit costs, in connection with certain properties included in our Strategic Reallocation Plan.

(5) The estimated lives over which depreciation is recognized follow:  Building and land improvements: 10-40 years; and tenant improvements: related lease terms.
(6) The acquisition date of multi-parcel properties reflects the date of the earliest parcel acquisition.
(7) Under construction or redevelopment at December 31, 2012.
(8) Held or under pre-construction at December 31, 2012.
(9) Development in progress in anticipation of acquisition at December 31, 2012.
(10) Included in our Strategic Reallocation Plan and classified as held for sale as of December 31, 2012.

F-56

The following table summarizes our changes in cost of properties for the years ended December 31, 2012, 2011 and 2010 (in thousands):

Beginning balance

Acquisitions of operating properties

Improvements and other additions

Sales

Impairments

Other dispositions

Other

Ending balance

2012

2011

2010

$ 4,038,932

$ 3,948,487

$ 3,452,512

33,684

214,418

(291,491)

(121,557)

(13,891)

(135)

26,887

304,079

(75,315)

(165,206)

—

—

187,052

338,358

(29,430)

—

—

(5)

$ 3,859,960

$ 4,038,932

$ 3,948,487

The following table summarizes our changes in accumulated depreciation for the same time periods (in thousands):

Beginning balance

Depreciation expense

Sales

Impairments

Other dispositions

Other

Ending balance

2012

2011

2010

$

577,601

$

503,032

$

422,612

93,158

(40,346)

(58,855)

(3,247)

(135)

99,173

(9,640)

(15,039)

—

75

88,048

(7,764)

—
—
136

$

568,176

$

577,601

$

503,032

F-57

(cid:44)(cid:95)(cid:76)(cid:74)(cid:92)(cid:91)(cid:80)(cid:93)(cid:76)(cid:3)(cid:54)(cid:585)(cid:74)(cid:76)(cid:90)
(cid:29)(cid:30)(cid:24)(cid:24)(cid:3)(cid:42)(cid:86)(cid:83)(cid:92)(cid:84)(cid:73)(cid:80)(cid:72)(cid:3)(cid:46)(cid:72)(cid:91)(cid:76)(cid:94)(cid:72)(cid:96)(cid:3)(cid:43)(cid:89)(cid:80)(cid:93)(cid:76)(cid:19)(cid:3)(cid:58)(cid:92)(cid:80)(cid:91)(cid:76)(cid:3)(cid:26)(cid:23)(cid:23)
(cid:42)(cid:86)(cid:83)(cid:92)(cid:84)(cid:73)(cid:80)(cid:72)(cid:19)(cid:3)(cid:52)(cid:72)(cid:89)(cid:96)(cid:83)(cid:72)(cid:85)(cid:75)(cid:3)(cid:25)(cid:24)(cid:23)(cid:27)(cid:29)
(cid:59)(cid:76)(cid:83)(cid:76)(cid:87)(cid:79)(cid:86)(cid:85)(cid:76)(cid:33)(cid:3)(cid:27)(cid:27)(cid:26)(cid:21)(cid:25)(cid:31)(cid:28)(cid:21)(cid:28)(cid:27)(cid:23)(cid:23)(cid:3)(cid:3)(cid:3)(cid:99)(cid:3)(cid:3)(cid:3)(cid:45)(cid:72)(cid:74)(cid:90)(cid:80)(cid:84)(cid:80)(cid:83)(cid:76)(cid:33)(cid:3)(cid:27)(cid:27)(cid:26)(cid:21)(cid:25)(cid:31)(cid:28)(cid:21)(cid:30)(cid:29)(cid:28)(cid:23)
(cid:94)(cid:94)(cid:94)(cid:21)(cid:74)(cid:86)(cid:87)(cid:91)(cid:21)(cid:74)(cid:86)(cid:84)(cid:3)(cid:3)(cid:3)(cid:99)(cid:3)(cid:3)(cid:3)(cid:53)(cid:64)(cid:58)(cid:44)(cid:33)(cid:3)(cid:54)(cid:45)(cid:42)

Corporate Information

ANNUAL MEETING

The 2013 annual meeting of shareholders will be held at 9:30 a.m. Eastern Time on May 9, 2013, at the corporate 
(cid:79)(cid:76)(cid:72)(cid:75)(cid:88)(cid:92)(cid:72)(cid:89)(cid:91)(cid:76)(cid:89)(cid:90)(cid:3)(cid:86)(cid:77)(cid:3)(cid:42)(cid:86)(cid:89)(cid:87)(cid:86)(cid:89)(cid:72)(cid:91)(cid:76)(cid:3)(cid:54)(cid:585)(cid:74)(cid:76)(cid:3)(cid:55)(cid:89)(cid:86)(cid:87)(cid:76)(cid:89)(cid:91)(cid:80)(cid:76)(cid:90)(cid:3)(cid:59)(cid:89)(cid:92)(cid:90)(cid:91)(cid:3)(cid:72)(cid:91)(cid:3)(cid:29)(cid:30)(cid:24)(cid:24)(cid:3)(cid:42)(cid:86)(cid:83)(cid:92)(cid:84)(cid:73)(cid:80)(cid:72)(cid:3)(cid:46)(cid:72)(cid:91)(cid:76)(cid:94)(cid:72)(cid:96)(cid:3)(cid:43)(cid:89)(cid:80)(cid:93)(cid:76)(cid:19)(cid:3)(cid:58)(cid:92)(cid:80)(cid:91)(cid:76)(cid:3)(cid:26)(cid:23)(cid:23)(cid:19)(cid:3)(cid:42)(cid:86)(cid:83)(cid:92)(cid:84)(cid:73)(cid:80)(cid:72)(cid:19)(cid:3)(cid:52)(cid:72)(cid:89)(cid:96)(cid:83)(cid:72)(cid:85)(cid:75)(cid:3)(cid:25)(cid:24)(cid:23)(cid:27)(cid:29)(cid:21)

Board of Trustees

(cid:44)(cid:95)(cid:76)(cid:74)(cid:92)(cid:91)(cid:80)(cid:93)(cid:76)(cid:3)(cid:54)(cid:585)(cid:74)(cid:76)(cid:89)(cid:90)

Investor Relations

Jay H. Shidler
Chairman

Clay W. Hamlin, III
Vice Chairman

Thomas F. Brady
Robert L. Denton
Elizabeth A. Hight
David M. Jacobstein
Steven D. Kesler
Richard Szafranski
Roger A. Waesche, Jr.
Kenneth D. Wethe 

Roger A. Waesche, Jr.
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Stephen E. Budorick
Executive Vice President & 
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Wayne H. Lingafelter
Executive Vice President,
Development & Construction

Stephen E. Riffee
Executive Vice President &
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For help with questions about the 
Company, or for additional corporate 
information, please contact:

Stephanie Krewson
Vice President, Investor Relations
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Email: ir@copt.com

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