Columbia Property Trust Inc
Annual Report 2017

Plain-text annual report

® ® I C O L U M B A P R O P E R T Y T R U S T | 2 0 1 7 A N N U A L R E P O R T 2017 Annual Report 2017 IN REVIEW MARKETS1 NEW YORK SAN FRANCISCO WASHINGTON, D.C. 41.4% 21.1% 20.3% ATLANTA OTHER 8.5% 8.7% $1 billion in Assets Sold $942 million Re-invested in Acquisitions in Key Markets Unless otherwise noted, all data herein is as of December 31,2017, and pro forma for the remaining Allianz obligation closed in February 2018 and the planned return of 263 Shuman to the lender. 1Based on gross real estate assets at 100% of all properties, including those held through joint ventures. E R A U Q S S E M T I COLUMBIA PROPERTY TRUST Annual Report 2017 2 2 million Square Feet Leased 96% Portfolio Leased Overall 33% Net Debt to Real-Estate Assets View from 114 Fifth Avenue NEW YORK H T U O S N W O T D M I COLUMBIA PROPERTY TRUST Annual Report 2017 3 TO OUR STOCKHOLDERS 2017 marked a turning point for Columbia Property Trust. Our strategic concentration of the portfolio into three key markets – New York, San Francisco, and Washington, D.C. – is now essentially complete. This portfolio transformation and our continued leasing success have positioned Columbia for significant growth in net operating income and funds from operations in 2018 and beyond. NELSON MILLS THREE KEY MARKETS DIFFERENTIATED ASSETS We hit the ground running in 2017 by completing the last of our major targeted dispositions of noncore assets – in Houston, Texas, and Cleveland, Ohio – all of which were sold by the end of January. We redeployed most of the capital generated by these sales into compelling new investments in our three key markets. We also created an exceptional opportunity to expand our scale and broaden our reach in these markets – without impacting our balance sheet – by establishing a joint venture with Allianz Real Estate, one of the world’s most respected real estate investors. This venture also allowed us to realize some of the substantial value we’ve created in the portfolio by selling Allianz a 45% stake in two of our San Francisco assets, University Circle and 333 Market Street. We in turn acquired an ownership stake in two core-quality, landmark assets: 114 Fifth Avenue in New York and 1800 M Street in Washington, D.C. In total, the venture now jointly owns $1.7 billion of real estate, with Columbia as the majority and managing partner. Later in the year, we re-invested the proceeds from our January dispositions into acquisitions in Midtown South Manhattan. These included two well-leased properties in Chelsea, 218 W. 18th Street and 245-249 W. 17th Street; and a redevelopment opportunity, 149 Madison Avenue. In total, Columbia invested $942 million in attractive properties in our target markets in 20171, and today, over 80% of our portfolio is concentrated in New York, San Francisco, and Washington, D.C.2 Why have we chosen to focus on these three high- barrier-to-entry, gateway cities? Because through decades of real estate cycles, each has sustained a healthy level of office demand with limited new supply, which has led to strong growth in rental rates and asset values over time. We believe those trends will continue for these three markets for years to come. However, to create value and stable cash flows in some of the world’s most competitive real estate markets, we must do more than just select the right cities. We endeavor to identify the strongest submarkets and neighborhoods in those cities, the best street corners, and the ideal properties that offer the amenities, transportation options, and building features that top tenants demand. We have invested in such properties throughout our portfolio, by either purchasing assets that fit our target profile and/or investing in the upgrades and amenities necessary to position our existing, well-located properties to best-in-class standards. Today, Columbia’s portfolio is hallmarked by architecturally distinct, modernized properties in amenity-rich, central business district locations. The value of this approach is evidenced by our continued leasing success over the past year. We leased more than 2 million square feet across the portfolio in 2017, with a 30% average roll-up in cash rents. The portfolio is now greater than 96% leased overall. COLUMBIA PROPERTY TRUST Annual Report 2017 4All of this combines to give Columbia the attractive growth profile we set out to achieve when we began our portfolio transition five years ago. GROWTH AND STABILITY All of this combines to give Columbia the attractive growth profile we set out to achieve when we began our portfolio transition five years ago. Our leasing accomplishments will generate strong growth in cash rents as signed leases convert to rent-paying occupancy. With in-place rents still approximately 10% below market on average across our portfolio, we expect substantial growth in net operating income to continue as we lease approximately 500,000 square feet of remaining availability and near-term roll in these desirable assets in very attractive submarkets. This strong growth is balanced by a healthy foundation of stability. Not only is our portfolio almost fully leased today, but we have only 5% of rent expiring across the portfolio through the end of 2019. And, apart from finishing current renovation projects and our redevelopment at 149 Madison in Manhattan this year, our current portfolio has few remaining capital requirements moving forward. 1800 M Street | WASHINGTON, D. C. Throughout the execution of all of these transactions and capital projects, we have maintained a strong balance sheet and a well-supported dividend, paying out $110 million to stockholders in 2017. That strength is affirmed not only by our continued investment-grade ratings but also by the commitments of our joint venture partners, providing us with broad access to cost- effective capital to expand the portfolio and support operations, in line with our strategy. We used a portion of our recent disposition proceeds to fund debt repayment, as well as to repurchase approximately $58 million of our shares, which we continue to believe are significantly discounted in comparison to their underlying net asset value. We will continue our work to enhance the value of our portfolio and to demonstrate this value to the public markets, in order to improve the price of our stock over time. N E D N N L E E O D D G L L O O G G E E E L G L L N G G A N N R A A T I I R R T T I Columbia is very well positioned for outperformance among office REITs in the years ahead. DEMONSTRATED ABILITY In 2018, we are continuing to build upon the track record of success that we’ve established. We will look for additional compelling investment opportunities in our three key markets – either with partners or independently – and may pursue the disposition of certain properties in order to preserve and recycle their value. We’ll continue to keep leasing and operations as our primary focus, in order to maximize occupancy and to capitalize on opportunities to drive rents. And we’ll maintain our long-standing commitment to a strong balance sheet to provide the capacity and flexibility to operate efficiently and to facilitate continued growth and value creation. As a result of focused determination and unwavering commitment to our strategy, Columbia is very well- positioned for outperformance among office REITs in the years ahead. I am grateful to our employees and our executive team for demonstrating that commitment, to our board of directors for their leadership, and to you, our stockholders, for your continued support as we continue moving our company successfully ahead. E. Nelson Mills President, Chief Executive Officer and Director March 30, 2018 1 At our share of those properties held through the joint venture with Allianz. 2 Based on gross real estate assets at 100% of property value, including properties held through joint ventures. I I T C R T S D L A C N A N F I I 650 California Street SAN FRANCISCO COLUMBIA PROPERTY TRUST Annual Report 2017 6 FORM 10-K I E L N G E N D A L O R G T Penn Quarter Capitol Riverfront . . C D , n o t g n h s a W i n w o t d M CHELSEA h t u o S i I I I I L A C N A N F T C H R T T R Silicon S O Valley N D San Francisco S F O q u H a T r U e O S T E K R A M T m e s i I I I R O N New York D F L S A T T R C T Midtown UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 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, 2017 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 001-36113 COLUMBIA PROPERTY TRUST, INC. (Exact name of registrant as specified in its charter) Maryland (State or other jurisdiction of incorporation or organization) 20-0068852 (I.R.S. Employer Identification Number) 1170 Peachtree Street NE, Suite 600 Atlanta, Georgia 30309 (Address of principal executive offices) (Zip Code) (404) 465-2200 (Registrant's telephone number, including area code) Securities registered pursuant to Section 12 (b) of the Act: Title of each class Common Stock Name of exchange on which registered New York Stock Exchange Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Securities registered pursuant to Section 12 (g) of the Act: None 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 No No Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes 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 (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes 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. Large accelerated filer Accelerated filer Non-accelerated filer Smaller reporting company Emerging Growth Company If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes No As of June 30, 2017, the aggregate market value of the common stock of Columbia Property Trust, Inc. held by non-affiliates was $2,286,239,000 based on the closing price as reported by the New York Stock Exchange. As of January 31, 2018, 119,897,777 shares of common stock were outstanding. Registrant incorporates by reference portions of the Columbia Property Trust, Inc. Definitive Proxy Statement for the 2018 Annual Meeting of Stockholders (Items 10, 11, 12, 13, and 14 of Part III) to be filed prior to April 30, 2018. FORM 10-K COLUMBIA PROPERTY TRUST, INC. TABLE OF CONTENTS PART I. Item 1. Business Item 1A. Risk Factors Item 1B. Unresolved Staff Comments Item 2. Properties Item 3. Legal Proceedings Item 4. Mine Safety Disclosures PART II. Item 5. Market for Registrant's Common Equity, Related Stockholder Matters, and Issuer Purchases of Equity Securities(cid:2) Item 6. Selected Financial Data Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations Item 7A. Quantitative and Qualitative Disclosures about Market Risk Item 8. Financial Statements and Supplementary Data Item 9. Changes 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 Shareholder Matters(cid:2)Certain Item 13. Relationships and Related Transactions, and Director Independence Item 14. Principal Accountant Fees and Services PART IV. Item 15. Exhibits and Financial Statement Schedules Signatures Page No. Page 4 Page 7 Page 16 Page 16 Page 18 Page 18 Page 19 Page 22 Page 23 Page 39 Page 40 Page 40 Page 40 Page 43 Page 44 Page 44 Page 44 Page 44 Page 44 Page 45 Page 48 Page 2 CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS Certain statements contained in this Form 10-K of Columbia Property Trust, Inc. and its subsidiaries ("Columbia Property Trust," "we," "our," or "us"), other than historical facts may constitute "forward-looking statements” within the meaning of the Private Litigation Reform Act of 1995 (set forth in Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934). We intend for all such forward-looking statements presented in this annual report on Form 10-K ("Form 10-K"), or that management may make orally or in writing from time to time, to be covered by the applicable safe harbor provisions for forward- looking statements contained in those acts. Such statements in this Form 10-K include, among other things, information about possible or assumed future results of the business and our financial condition, liquidity, results of operations, plans, strategies, prospects, and objectives. Such forward- looking statements can generally be identified by our use of forward-looking terminology such as "may," "will," "expect," "intend," "anticipate," "estimate," "believe," "continue," or other similar words. As forward-looking statements, these statements are subject to certain risks and uncertainties, including known and unknown risks, which could cause actual results to differ materially from those projected or anticipated. These risks, uncertainties, and other factors include, without limitation: • • • • • • • • • • • • • • • • • • risks affecting the real estate industry (such as the inability to enter into new leases, dependence on tenants’ financial condition, and competition from other owners of real estate); risks relating to our ability to maintain and increase property occupancy rates and rental rates; adverse economic or real estate developments in our target markets; risks relating to the use of debt to fund acquisitions; availability and terms of financing; ability to refinance indebtedness as it comes due; sensitivity of our operations and financing arrangements to fluctuations in interest rates; reductions in asset valuations and related impairment charges; risks associated with joint ventures; risks relating to repositioning our portfolio; risks relating to construction and development activities; risks relating to acquisition and disposition activities; risks associated with joint venture relationships; existence of complex regulations relating to our status as a real estate investment trust ("REIT"); risks associated with our potential failure to qualify as a REIT; potential liability for uninsured losses and environmental contamination; potential adverse impact of market interest rates on the market price for our securities; and risks associated with our dependence on key personnel whose continued service is not guaranteed. For further discussion of these and additional risks and uncertainties that may cause actual results to differ from expectation, see Item 1A, Risk Factors, and other information contained in this Form 10-K and our other periodic reports filed with the SEC. Although we believe that the expectations reflected in such forward-looking statements are based on reasonable assumptions, we can give no assurances that our expectations will be achieved. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date this Form 10-K is filed with the U.S. Securities and Exchange Commission ("SEC"). We do not intend to update or revise any forward-looking statement, whether as a result of new information, future events, or otherwise. Page 3 ITEM 1. BUSINESS General PART I Columbia Property Trust, Inc. ("Columbia Property Trust") (NYSE: CXP) is a Maryland corporation that operates as a real estate investment trust ("REIT") for federal income tax purposes and owns and operates commercial real estate properties. Columbia Property Trust was incorporated in 2003, commenced operations in 2004, and conducts business primarily through Columbia Property Trust Operating Partnership, L.P. ("Columbia Property Trust OP"), a Delaware limited partnership. Columbia Property Trust is the general partner and sole owner of Columbia Property Trust OP and possesses full legal control and authority over its operations. Columbia Property Trust OP acquires, redevelops, owns, leases, and operates real properties directly, through wholly owned subsidiaries, and through unconsolidated joint ventures. Unless otherwise noted herein, references to Columbia Property Trust, "we," "us," or "our" herein shall include Columbia Property Trust and all subsidiaries of Columbia Property Trust, direct and indirect. Columbia Property Trust typically invests in high-quality, income-generating office properties. As of December 31, 2017, Columbia Property Trust owned 19 operating properties, of which 14 were wholly owned and five were owned through unconsolidated joint ventures. These properties are located primarily in New York, San Francisco, Washington, D.C., and Atlanta, contain a total of 9.2 million rentable square feet, and were approximately 96.2% leased as of December 31, 2017. Real Estate Investment Objectives Columbia Property Trust seeks to invest in and manage a commercial real estate portfolio that provides the size, quality, and market specialization needed to deliver both income and long-term growth, as measured in the total return to our shareholders. Our primary strategic objective is to generate long-term shareholder returns from a combination of steadily growing cash flows and appreciation in our net asset values, through the acquisition and ownership of high-quality office buildings located principally in high-barrier- to-entry markets. Our value creation and growth strategies are founded in the following: Targeted Market Strategy Our portfolio consists of a combination of multi- and single-tenant office properties located primarily in Central Business Districts ("CBD"). We focus our acquisition efforts in select primary markets with strong fundamentals and liquidity, including CBD and urban in-fill locations. We believe that the major U.S. office markets provide the greatest opportunity for increasing net income and property values over time. We maintain a long-term goal of increasing our presence in our target markets in order to leverage our scale, efficiency, and market knowledge. New Investment Targets We look to acquire strategic and premier office assets with quality tenants in our target markets. We concentrate on office buildings that are competitive within the top tier of their markets or that can be repositioned as such through value-add initiatives. In addition, our investment objectives include optimizing our portfolio allocation between stabilized investments and more growth-oriented, value-add investments, with an emphasis on central business districts and multi-tenant buildings. Strong and Flexible Balance Sheet We are committed to maintaining an investment-grade balance sheet with a strong liquidity profile and proven access to capital. Our leverage level and other credit metrics provide the financial flexibility to pursue new acquisitions and other growth opportunities that will further our long-term performance objectives. Capital Recycling To date, we have primarily sold non-strategic assets to increase our concentration in our target markets. In the future, we also anticipate selling some assets from our target markets to maintain a well-balanced portfolio and to harvest capital from mature assets. Our goals are to foster long-term growth and capital appreciation in our portfolio by maintaining the following: an appropriate balance of core investments relative to value-add investments, building profiles that will continue to attract prospects for future rent growth, and activity levels that will continue to support our connections in the real estate community. We routinely evaluate our portfolio to identify assets that are good candidates for disposition in the furtherance of these goals. Proactive Asset Management We believe our team is well equipped to deliver operating results in all facets of the management process. Our leasing efforts are founded in understanding the varied and complex needs of tenants in the marketplace today. We pursue meeting those needs through new and renewal leases, as well as lease restructures that further our long-term goals. We are committed to prudent capital Page 4 investment in our assets to ensure their competitive positioning and status, and rigorously pursue efficient operations and cost containment at the property level. Transaction Activity In connection with repositioning our portfolio, and in furtherance of our real estate investment objectives, we have executed the following real estate transactions during 2017, 2016, and 2015: Acquisitions 2017 Property Location % Acquired Square Feet Acquisition Date Purchase Price (in thousands) 149 Madison Avenue 245-259 West 17th Street 218 West 18th Street New York, NY New York, NY New York, NY West 17th Street & West 18th Street Acquisition 1800 M Street 114 Fifth Avenue 2015 229 West 43rd Street 116 Huntington Avenue 315 Park Avenue South 1881 Campus Commons Washington, D.C. New York, NY New York, NY Boston, MA New York, NY Reston, VA 100.0% 100.0% 55.0% 49.5% 100.0 % 100.0 % 100.0 % 100.0 % 127,000 281,000 166,000 447,000 581,000 352,000 481,000 271,000 327,000 244,000 November 28, 2017 $ 87,700 October 11, 2017 October 11, 2017 July 6, 2017 August 4, 2015 January 8, 2015 January 7, 2015 January 7, 2015 $ $ $ $ $ $ $ 514,100 231,550 (1) 108,900 (1) 516,000 152,000 372,000 64,000 (1) Purchase price is for our partial interests in the properties. These properties are owned through unconsolidated joint ventures. Please refer to Note 3, Real Estate Transactions, and Note 4, Unconsolidated Joint Ventures, of the accompanying consolidated financial statements for more information. Page 5 $ $ $ $ $ $ $ $ $ $ $ $ $ 121,500 (1)(2) 112,500 (1)(2) 267,500 272,000 58,500 51,000 19,500 174,500 122,000 48,000 187,000 65,000 291,550 (3) Dispositions Property Location % Sold Rentable Square Feet Disposition Date Sale Price (in thousands) 2017 University Circle 333 Market Street Key Center Tower & Marriott 5 Houston Center Energy Center I 515 Post Oak San Francisco, CA San Francisco, CA 22.5% (2) 22.5% (2) 451,000 657,000 July 6, 2017 July 6, 2017 Cleveland, OH 100.0% 1,326,000 January 31, 2017 Houston, TX Houston, TX Houston, TX 581,000 332,000 274,000 Houston Property Sale 100.0% 1,187,000 January 6, 2017 2016 SanTan Corporate Center Phoenix, AZ Sterling Commerce Dallas, TX 9127 South Jamaica Street Denver, CO 80 Park Plaza Newark, NJ 9189, 9191 & 9193 South Jamaica Street 800 North Frederick 100 East Pratt Denver, CO Suburban MD Baltimore, MD 2015 1881 Campus Commons Reston, VA Market Square 170 Park Avenue 180 Park Avenue Washington, D.C. Northern NJ Northern NJ 1580 West Nursery Road Baltimore, MD Acxiom Highland Landmark III The Corridors III 215 Diehl Road 544 Lakeview Bannockburn Lake III Robbins Road 550 King Street 11 Property Sale Chicago, IL Chicago, IL Chicago, IL Chicago, IL Chicago, IL Chicago, IL Boston, MA Boston, MA 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 49.0 % December 15, 2016 November 30, 2016 October 12, 2016 September 30, 2016 September 22, 2016 July 8, 2016 March 31, 2016 December 10, 2015 October 28, 2015 267,000 310,000 108,000 961,000 370,000 393,000 653,000 244,000 698,000 145,000 224,000 315,000 322,000 273,000 222,000 162,000 139,000 106,000 458,000 490,000 100.0 % 2,856,000 July 1, 2015 $ 433,250 (1) Sale price is for the partial interests in the properties. After partial sale, these properties are owned through unconsolidated joint ventures. Please refer to Note 3, Real Estate Transactions, and Note 4, Unconsolidated Joint Ventures, of the accompanying consolidated financial statements for more information. (2) On February 1, 2018, we sold an additional 22.5% interest in both University Circle and 333 Market Street to our joint venture partner, Allianz for $235.3 million, as described in Note 3, Real Estate Transactions, of the accompanying consolidated financial statements. (3) Sale price is for our partial interest in the property. On October 28, 2015, Columbia Property Trust transferred the Market Square properties, valued at $595.0 million and subject to a $325.0 million mortgage note, to a joint venture and sold a 49% interest in that joint venture to Blackstone Property Partners for net proceeds of approximately $120.0 million. See Note 3, Real Estate Transactions, and Note 4, Unconsolidated Joint Ventures for additional information. Segment Information As of December 31, 2017, our reportable segments are determined based on the geographic markets in which we have significant investments. We consider geographic location when evaluating our portfolio composition and in assessing the ongoing operations and performance of our properties. See Note 14, Segment Information, to the accompanying consolidated financial statements. Page 6 Employees As of December 31, 2017, we employed 94 people. Competition Leasing real estate is highly competitive in the current market. As a result, we experience competition for high-quality tenants from owners and managers of competing projects. Therefore, we may experience delays in re-leasing vacant space; or we may have to provide rent concessions, incur charges for tenant improvements, or offer other inducements to enable us to timely lease vacant space, all of which may have an adverse impact on our results of operations. In addition, we are in competition with other potential buyers for the acquisition of the same properties, which may result in an increase in the amount we must pay to purchase a property. Further, at the time we elect to dispose of our properties, we will also be in competition with sellers of similar properties to locate suitable purchasers. Concentration of Credit Risk We are dependent upon the ability of our current tenants to pay their contractual rent amounts as they become due. The inability of a tenant to pay future rental amounts would have a negative impact on our results of operations. We are not aware of any reason why our current tenants would not be able to pay their contractual rental amounts as they become due in all material respects. Situations preventing our tenants from paying contractual rents could result in a material adverse impact on our results of operations. Based on our 2017 annualized lease revenue, no single tenant accounts for more than 6% of our portfolio. Website Address Access to copies of each of our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, proxy statements, and other documents filed with, or furnished to, the SEC, including amendments to such filings, may be obtained free of charge from our website, http://www.columbia.reit, or through a link to the http://www.sec.gov website. The information contained on our website is not incorporated by reference herein. These filings are available promptly after we file them with, or furnish them to, the SEC. ITEM 1A. RISK FACTORS Below are some of the risks and uncertainties that could cause our actual results to differ materially from those presented in our forward-looking statements. The risks and uncertainties described below are not the only ones we face but do represent those risks and uncertainties that we believe are material to our business, operating results, prospects, and financial condition. Additional risks and uncertainties not presently known to us or that we currently deem immaterial may also harm our business. Risks Related to Our Business and Properties If we are unable to find suitable investments or pay too much for properties, we may not be able to achieve our investment objectives, and the returns on our investments will be lower than they otherwise would be. We are competing for real estate investments with other REITs; real estate limited partnerships; pension funds and their advisors; bank and insurance company investment accounts; individuals; non U.S. investors; and other entities. The market for high-quality commercial real estate assets is highly competitive, given how infrequently those assets become available for purchase. As a result, many real estate investors, including us, face aggressive competition to purchase quality office real estate assets. A significant number of entities and resources competing for high-quality office properties support relatively high acquisition prices for such properties, which may reduce the number of acquisition opportunities available to, or affordable for, us and could put pressure on our profitability and our ability to pay distributions to stockholders. We cannot be sure that we will be successful in obtaining suitable investments on financially attractive terms or that, if we make investments, our objectives will be achieved. Economic conditions may cause the creditworthiness of our tenants to deteriorate and occupancy and market rental rates to decline. Although U.S. macroeconomic conditions continued to be relatively stable during 2017, several economic factors, including increases in interest rates, may adversely affect the financial condition and liquidity of many businesses, as well as the demand for office space generally. Should economic conditions worsen, our tenants' ability to honor their contractual obligations may suffer. Further, it may become increasingly difficult to maintain our occupancy rate and achieve future rental rates comparable to the rental rates of our currently in-place leases as we seek to re-lease space and/or renew existing leases. Our office properties were approximately 96.2% leased at December 31, 2017, and provisions for uncollectible tenant receivables, net of recoveries, were less than 0.1% of total revenues for the year then ended. As a percentage of 2017 annualized lease revenue, Page 7 approximately 2% of leases expire in 2018, 3% of leases expire in 2019, and 7% of leases expire in 2020 (see Item 2, Properties). No assurances can be given that economic conditions will not have a material adverse effect on our ability to re-lease space at favorable rates or on our ability to maintain our current occupancy rate and our low provisions for uncollectible tenant receivables. Changes in general economic conditions and regulatory matters germane to the real estate industry may cause our operating results to suffer and the value of our real estate properties to decline. Our operating results are subject to risks generally incident to the ownership of real estate, including: • • • • • • • • changes in general or local economic conditions; changes in supply of or demand for similar or competing properties in an area; changes in interest rates and availability of permanent mortgage funds, which may render the sale of a property difficult or unattractive; inability to finance property redevelopment or acquisitions on favorable terms; the relative illiquidity of real estate investments; changes in space utilization by our tenants due to technology, economic conditions, and business culture; changes in tax, real estate, environmental, and zoning laws; and periods of rising or higher interest rates and tight money supply. These and other reasons may prevent us from being profitable or from realizing growth or maintaining the value of our real estate properties. We are dependent upon the economic climates of our markets - New York; San Fransisco; Washington, D.C.; Boston; and Atlanta. In addition, market and economic conditions in the metropolitan areas in which we derive a substantial portion of our revenue such as New York City, New York; San Francisco, California; Washington, D.C.; Boston, Massachusetts; and Atlanta, Georgia, may have a significant impact on our overall occupancy levels and rental rates and, therefore, our profitability. Furthermore, our business strategy involves continued focus on select core markets, which will increase the impact of the local economic conditions in such markets on our results of operations in future periods. These and other reasons may prevent us from being profitable or from realizing growth or maintaining the value of our real estate properties. We depend on tenants for our revenue, and lease defaults or terminations could negatively affect our financial condition and results of operations and limit our ability to make distributions to our stockholders. The success of our investments materially depends on the financial stability of our tenants. A default or termination by a significant tenant on its lease payments to us would cause us to lose the revenue associated with such lease and require us to find an alternative source of revenue to meet mortgage payments and prevent a foreclosure if the property is subject to a mortgage, could cause us to violate our bank debt covenants, or impact our credit rating. In the event of a tenant default or bankruptcy, we may experience delays in enforcing our rights as landlord and may incur substantial costs in protecting our investment and re-letting our property. If a tenant defaults on or terminates a significant lease, we may be unable to lease the property for the rent previously received or sell the property without incurring a loss. In addition, significant expenditures for our properties and our company, such as real estate taxes, insurance and maintenance costs, together with general and administrative costs and debt payments, do not decrease when revenues decrease. Therefore, these events could have a material adverse effect on our results of operations or cause us to reduce the amount of distributions to stockholders. Future acquisitions may fail to perform in accordance with our expectations, may require renovation costs exceeding our estimates or expose us to unknown liabilities, and may be located in new markets where we may face risks associated with investing in an unfamiliar market. In the normal course of business, we typically evaluate potential acquisitions, enter into nonbinding letters of intent, and may, at any time, enter into contracts to acquire additional properties. Acquired properties may fail to perform in accordance with our expectations due to lease-up risk, renovation cost risks, and other factors. In addition, the renovation and improvement costs we incur in bringing an acquired property up to market standards may exceed our estimates. We may not have the financial resources to make suitable acquisitions or renovations on favorable terms or at all. The properties we acquire may be subject to liabilities for which 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. Unknown liabilities with respect to acquired properties might include: • • liabilities for clean-up of undisclosed environmental contamination; claims by tenants, vendors, or other persons against the former owners of the properties; Page 8 • • 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. Furthermore, we may acquire properties located in markets in which we do not have an established presence. We may face risks associated with a lack of market knowledge or understanding of the local economy, forging new business relationships in the area, and unfamiliarity with local government and permitting procedures. As a result, the operating performance of properties acquired in new markets may be less than we anticipate, and we may have difficulty integrating such properties into our existing portfolio. In addition, the time and resources that may be required to obtain market knowledge and/or integrate such properties into our existing portfolio could divert our management's attention from our existing business or other attractive opportunities in our established markets. Real estate investments are illiquid; our inability to sell a property when we plan to do so could limit our operational and financial flexibility, including our ability to pay cash distributions to our stockholders. Because real estate investments are relatively illiquid, our ability to sell promptly one or more properties in our portfolio in response to changing economic, financial, and investment conditions may be limited. Purchasers may not be willing to pay acceptable prices for properties that we wish to sell. General economic conditions, availability of financing, interest rates, and other factors, including supply and demand, all of which are beyond our control, affect the real estate market. Therefore, we may be unable to sell a property for the price, on the terms, or within the time frame that we want. That inability could reduce our cash flow and cause our results of operations to suffer, limiting our ability to make distributions to our stockholders. Furthermore, our properties' market values depend principally upon the value of the properties' leases. A property may incur vacancies either by the default of tenants under their leases or the expiration of tenant leases. If vacancies occur and continue for a prolonged period of time, it may become difficult to locate suitable buyers for any such property, and property resale values may suffer, which could result in lower returns for our stockholders. Uninsured losses relating to real property or excessively expensive premiums for insurance coverage could reduce our net income, and materially and adversely affect our business or financial condition. We may incur losses from time to time that are uninsurable or not economically feasible to insure, or may be insured subject to limitations, such as large deductibles or co-payments. Some of these losses could be catastrophic in nature, such as losses due to earthquakes, acts of terrorism, fire, floods, tornadoes, hurricanes, pollution, wars, or environmental matters. For example, we have properties located in San Francisco, California, an area especially susceptible to earthquakes, and, collectively, these properties represent approximately 28% of our 2017 annualized lease revenue, as described in Item 2, Properties. Because several of these properties are located in close proximity to one another, an earthquake in the San Francisco area could materially damage, destroy, or impair the use by tenants of all of these properties. Furthermore, insurance risks associated with potential terrorist acts could sharply increase the premiums we pay for coverage against property and casualty claims. Additionally, mortgage lenders in some cases insist that commercial property owners purchase coverage against terrorism as a condition of providing mortgage loans. Such insurance policies may not be available at a reasonable cost, if at all, which could inhibit our ability to finance or refinance our properties. In such instances, we may be required to provide other financial support, either through financial assurances or self-insurance, to cover potential losses. In addition, we may not have adequate coverage for losses. If any of our properties incur a loss that is not fully insured, the value of that asset will be reduced by such uninsured loss. Furthermore, other than any working capital reserves or other reserves that we may establish, or our existing line of credit, we do not have additional sources of funding specifically designated for repairs or reconstruction of any our properties. To the extent we incur significant uninsured losses, or are required to pay unexpectedly large amounts for insurance, our results of operations or financial condition could be adversely affected. If we are unable to fund the future capital needs of our properties, cash distributions to our stockholders and the value of our investments could decline. When tenants do not renew their leases or otherwise vacate their space, we often need to expend substantial funds for tenant improvements to the vacated space in order to attract replacement tenants. In addition, although we expect that our leases with tenants will require tenants to pay routine property maintenance costs, we will likely be responsible for any major structural repairs, such as repairs to the foundation, exterior walls, and rooftops. If we need significant capital in the future to improve or maintain our properties or for any other reason, we will have to obtain financing from sources such as cash flow from operations, borrowings, property sales, or future equity offerings. These sources of funding may not be available on attractive terms or at all. If we cannot procure the necessary funding for capital improvements, our investments may generate lower cash flows or decline in value, or both, which would limit our ability to make distributions to our stockholders. Page 9 We have incurred and are likely to continue to incur mortgage and other indebtedness, which may increase our business risks. As of February 2, 2018, our total consolidated indebtedness was approximately $1.5 billion, which includes a $150.0 million term loan, $700.0 million of bonds, and $71.9 million of mortgage loans, all with fixed interest rates, or with interest rates that are effectively fixed when considered in connection with an interest rate swap agreement; and $180.0 million outstanding on a bridge loan, a $300.0 million term loan, and $60.0 million in outstanding borrowings on our line of credit, all with variable interest rates. We are likely to incur additional indebtedness to acquire properties, to fund property improvements and other capital expenditures, to pay our distributions, and for other purposes. Significant borrowings by us increase the risks of an investment in us. If there is a shortfall between the cash flow from properties and the cash flow needed to service our indebtedness, then the amount available for distributions to stockholders may be reduced. In addition, incurring mortgage debt increases the risk of loss since defaults on indebtedness secured by a property may result in lenders initiating foreclosure actions. In that case, we could lose the property securing the loan that is in default. If any of our properties are foreclosed due to a default, our ability to pay cash distributions to our stockholders will be limited. For tax purposes, a foreclosure of any of our properties would be treated as a sale of the property for a purchase price equal to the outstanding balance of the debt secured by the mortgage. If the outstanding balance of the debt secured by the mortgage exceeds our tax basis in the property, we would recognize taxable income on foreclosure, but we would not receive any cash proceeds. We may give full or partial guarantees to lenders of mortgage debt on behalf of the entities that own our properties. When we give a guaranty on behalf of an entity that owns one of our properties, we are responsible to the lender for satisfaction of the debt if it is not paid by such entity. If any mortgages or other indebtedness contain cross-collateralization or cross-default provisions, a default on a single loan could affect multiple properties. Our unsecured credit facility (the "Revolving Credit Facility") and our three unsecured term loan facilities, each include a cross-default provision that provides that a payment default under any recourse obligation of $50 million or more by us, Columbia Property Trust OP, or any of our subsidiaries, constitutes a default under the line of credit and term loan facilities. Increases in interest rates could increase the amount of our debt payments and make it difficult for us to refinance our unsecured bank debt or bonds, to finance or refinance properties, which could reduce the number of properties we can acquire, our net income, and the amount of cash distributions we can make. We expect to incur additional indebtedness in the future, which may include mortgages, unsecured bonds, term loans, or borrowings under a credit facility. Increases in interest rates will increase interest costs on our variable-interest debt instruments, which would reduce our cash flows and our ability to pay distributions. If mortgage debt is unavailable at reasonable interest rates, we may not be able to finance the purchase of properties. If we place mortgage debt on properties, we run the risk of being unable to refinance the properties when the loans become due, or of being unable to refinance on favorable terms. In addition, if we need to repay existing debt during periods of higher interest rates, we may need to sell one or more of our investments in order to repay the debt, which sale at that time might not permit realization of the maximum return on such investments. If any of these events occur, our cash flow would be reduced. This, in turn, would reduce cash available for distribution to our stockholders and may hinder our ability to raise capital in the future through additional borrowings or debt or equity offerings. For additional information, please refer to Item 7A, Quantitative and Qualitative Disclosures About Market Risk, for additional information regarding interest rate risk. Lenders may require us to enter into restrictive covenants relating to our operations, which could limit our ability to make distributions to our stockholders. When providing financing, a lender may impose restrictions on us that affect our distribution and operating policies and our ability to incur additional debt. Loan documents we enter into may contain covenants that limit our ability to further mortgage the property or discontinue insurance coverage. These or other limitations may limit our flexibility and our ability to execute on our operating plans. A downgrade in the credit rating of our debt could materially adversely affect our business and financial condition. Our senior unsecured debt is rated investment grade by Standard & Poor's Corporation and Moody's Investors Service. In determining our credit ratings, the rating agencies consider a number of both quantitative and qualitative factors, including earnings, fixed charges, cash flows, total debt outstanding, total secured debt, off balance sheet obligations, total capitalization, and various ratios calculated from these factors. The rating agencies also consider predictability of cash flows, business strategy, property development risks, industry conditions, and contingencies. Therefore, any deterioration in our operating performance could cause our investment-grade rating to come under pressure. Our corporate credit rating at Standard & Poor's Ratings Service is currently "BBB" with a stable outlook, and our corporate credit rating at Moody's Investor Service is currently "Baa2" with a stable outlook. There can be no assurance that our credit ratings will not be lowered or withdrawn in their entirety. A negative change in our ratings outlook or any downgrade in our current investment-grade credit ratings by rating agencies could adversely affect our cost and Page 10 access to sources of liquidity and capital. Additionally, a downgrade could, among other things, increase the costs of borrowing under our credit facility and term loan, adversely impact our ability to obtain unsecured debt or refinance our unsecured debt on competitive terms in the future, or require us to take certain actions to support our obligations, any of which would adversely affect our business and financial condition. A breach of our privacy or information security systems could materially adversely affect our business and financial condition. Privacy and information security risks have generally increased in recent years because of the proliferation of new technologies and the increased sophistication and activities of perpetrators of cyber attacks. As our reliance on technology has increased, so have the risks to our systems, both internal and those we have outsourced. Risks that could directly result from the occurrence of a cyber incident include operational interruption, damage to our relationships with our tenants, potential errors from misstated financial reports, missed reporting deadlines, and private data exposure, among others. Any or all of the preceding risks could have a material adverse effect on our results of operations, financial condition, and cash flows. Although we make efforts to maintain the security and integrity of these types of information technology networks and related systems, there can be no assurance that our security efforts and measures will be effective or that attempted security breaches or disruptions would not be successful or damaging. As cyber threats continue to evolve, we may be required to expend additional resources to continue to enhance our information security measures and to investigate and remediate any information security vulnerabilities. We are and may continue to be subject to litigation, which could have a material adverse effect on our financial condition. We currently are, and are likely to continue to be, subject to a variety of claims arising in the ordinary course of business, including contract claims and claims alleging violations of federal and state law regarding workplace and employment matters, discrimination, and similar matters. Some of these claims may result in significant defense costs and potentially significant judgments against us, some of which are not, or cannot be, insured against. Although we defend ourselves against any such claims, we cannot be certain of the ultimate outcomes of currently asserted claims or of those that arise in the future. Resolution of these types of matters against us may result in our having to pay significant fines, judgments, or settlements, which, if uninsured, or if the fines, judgments, and settlements exceed insured levels, would adversely impact our earnings and cash flows, thereby impacting our ability to service debt and make distributions to our stockholders. Costs of complying with governmental laws and regulations may reduce our net income and the cash available for distributions to our stockholders. All real property and the operations conducted on real property are subject to federal, state, and local laws and regulations relating to environmental protection and human health and safety. Some of these laws and regulations may impose joint and several liability on tenants, owners, or operators for the costs to investigate or remediate contaminated properties, regardless of fault or whether the acts causing the contamination were legal. In addition, the presence of hazardous substances, or the failure to properly remediate these substances, may hinder our ability to sell, rent, or pledge such property as collateral for future borrowings. Compliance with new laws or regulations, or stricter interpretation of existing laws may require us to incur material expenditures. Future laws, ordinances, or regulations may impose material environmental liability. Additionally, our tenants' operations, the existing condition of land when we buy it, operations in the vicinity of our properties, such as the presence of underground storage tanks or activities of unrelated third parties may affect our properties. Furthermore, there are various local, state, and federal regulatory requirements, such as fire, health, life-safety, and similar regulations, and the Americans with Disabilities Act, with which we may be required to comply, and which may subject us to liability in the form of fines or damages for noncompliance. Any material expenditures, fines, or damages we must pay would adversely impact our earnings and cash flows, thereby impacting our ability to service debt and make distributions to our stockholders. Compliance or failure to comply with the Americans with Disabilities Act or other safety regulations and requirements could result in substantial costs. The Americans with Disabilities Act generally requires that certain buildings, including office buildings, be made accessible to disabled persons. Noncompliance could result in the imposition of fines by the federal government or the award of damages to private litigants. If, under the Americans with Disabilities Act, we are required to make substantial alterations and capital expenditures in one or more of our properties, including the removal of access barriers, it could adversely impact our earnings and cash flows, thereby impacting our ability to service debt and make distributions to our stockholders. Our properties are subject to various federal, state and local regulatory requirements, such as state and local fire and life safety requirements. If we fail to comply with these requirements, we could incur fines or private damage awards. We do not know whether existing requirements will change or whether compliance with future requirements will require significant unanticipated expenditures that will affect our cash flow and results of operations. Page 11 Discovery of previously undetected environmentally hazardous conditions may decrease our revenues and limit our ability to make distributions. Under various federal, state, and local environmental laws, ordinances, and regulations, a current or previous real property owner or operator may be liable for the cost to remove or remediate hazardous or toxic substances on, under, or in such property. These costs could be substantial. Such laws often impose liability whether or not the owner or operator knew of, or was responsible for, the presence of such hazardous or toxic substances. Environmental laws also may impose restrictions on the manner in which property may be used or businesses may be operated, and these restrictions may require substantial expenditures or prevent us from entering into leases with prospective tenants that may be impacted by such laws. Environmental laws provide for sanctions for noncompliance and may be enforced by governmental agencies or, in certain circumstances, by private parties. Certain environmental laws and common law principles could be used to impose liability for release of and exposure to hazardous substances, including asbestos-containing materials. Third parties may seek recovery from real property owners or operators for personal injury or property damage associated with exposure to released hazardous substances. The cost of defending against claims of liability, of complying with environmental regulatory requirements, of remediating any contaminated property, or of paying personal injury claims could have an adverse impact on our business and results of operations. Property ownership through joint ventures may limit our ability to act exclusively in our interest. We have entered into five joint venture arrangements and in the future may acquire properties in, or contribute properties to, joint ventures with other persons or entities when we believe circumstances warrant the use of such structures. We could become engaged in a dispute with one or more of our joint venture partners, which might affect our ability to operate a jointly-owned property. Moreover, joint venture partners may have business, economic, or other objectives that are inconsistent with our objectives, including objectives that relate to the appropriate timing and terms of any sale or refinancing of a property. In some instances, joint venture partners may have competing interests in our markets that could create conflicts of interest. Also, our joint venture partners might refuse to make capital contributions when due, and we may be responsible to our partners for indemnifiable losses. We and our partners may each have the right to trigger a buy-sell arrangement, which could cause us to sell our interest, or acquire our partners' interest, at a time when we otherwise would not have initiated such a transaction and may result in the valuation of our interest in the joint venture (if we are the seller) or of the other partner's interest in the joint venture (if we are the buyer) at levels which may not be representative of the valuation that would result from an arm's length marketing process. We are also subject to risk in cases where an institutional owner is our joint venture partner, including (i) a deadlock if we and our joint venture partner are unable to agree upon certain major and other decisions, (ii) the limitation of our ability to liquidate our position in the joint venture without the consent of the other joint venture partner, and (iii) the requirement to provide guarantees in favor of lenders with respect to the indebtedness of the joint venture. If we sell properties and provide financing to purchasers, defaults by the purchasers would decrease our cash flows and limit our ability to make distributions. In some instances we may sell our properties by providing financing to purchasers. When we provide financing to purchasers, we will bear the risk that the purchaser may default, which could negatively impact our liquidity and results of operations. Even in the absence of a purchaser default, the distribution of the proceeds of sales to our stockholders, or the reinvestment of proceeds in other assets, will be delayed until the promissory notes or other property we may accept upon a sale are actually paid, sold, refinanced, or otherwise disposed. We are dependent on our executive officers and employees. We rely on a small number of persons, particularly E. Nelson Mills and James A. Fleming, to carry out our business and investment strategies. Any of our senior management, including Messrs. Mills and Fleming, may cease to provide services to us at any time. The loss of the services of any of our key management personnel or our inability to recruit and retain qualified personnel in the future, could have an adverse effect on our business and financial results. We will continue to try to attract and retain qualified additional senior management and other employees, but may not be able to do so on acceptable terms. Our operating results may suffer because of potential development and construction risks and delays and resultant increased costs. We may acquire and redevelop properties, including unimproved real estate, upon which we will construct improvements. We will be subject to uncertainties associated with rezoning for development and our ability to obtain required permits and authorizations; environmental concerns of governmental entities and/or community groups; and our contractors' abilities to build in conformity with plans, specifications, budgeted costs, and timetables. If a contractor fails to perform, we may resort to legal action to rescind the purchase or the construction contract or to compel performance. A contractor's performance may also be affected or delayed by conditions beyond the contractor's control, and we may incur additional risks when we make periodic progress payments or other advances to contractors before they complete construction. Delays in completing construction could also give tenants the right to terminate preconstruction leases. These and other factors can result in increased costs of a project or loss of our investment. Page 12 In addition, we will be subject to normal lease-up risks relating to newly constructed projects. We must rely on rental income and expense projections and estimates of the fair market value of property upon completion of construction when agreeing upon a purchase price at the time we acquire the property. If our projections are inaccurate, we may pay too much for a property, and our return on our investment could suffer. If our disclosure controls or internal control over financial reporting are not effective, investors could lose confidence in our reported financial information, which could adversely affect the perception of our business and the trading price of our common stock. Section 404 of the Sarbanes-Oxley Act of 2002 requires that we evaluate the effectiveness of our internal control over financial reporting as of the end of each fiscal year and to include a management report assessing the effectiveness of our internal control over financial reporting. Deficiencies, including any material weakness, in our internal control over financial reporting that may occur in the future could result in misstatements of our results of operations, restatements of our financial statements, a decline in the trading price of our common stock, or otherwise materially adversely affect our business, reputation, results of operations, financial condition, or liquidity. Risks Related to Ownership of Our Common Stock We may be unable to pay or maintain cash distributions or increase distributions over time, which could reduce the funds we have available for investment and the return to our investors. There are many factors that can affect the availability and timing of distributions to stockholders. We expect to continue to fund distributions principally from cash flow from operations; however, from time to time, we may elect to fund a portion of our distributions from borrowings. If we fund distributions from financings, we will have fewer funds available for the investment in, and acquisition of, properties; thus, the overall return to our investors may be reduced. We can give no assurance that we will be able to pay or maintain cash distributions or increase distributions over time. Our stock price may be volatile or may decline regardless of our operating performance, and may impede our stockholders' ability to sell their shares at a desirable price. The market price of our common stock may vary significantly in response to a number of factors, most of which we cannot control, including those described under this section and the following: • • • • • • • changes in capital market conditions that could affect valuations of real estate companies in general or other adverse economic conditions; our failure to meet any earnings estimates or expectations; future sales of our common stock by our officers, directors, and significant stockholders; global economic, legal, and regulatory factors unrelated to our performance; investors' perceptions of our prospects; announcements by us or our competitors of significant contracts, acquisitions, joint ventures, or capital commitments; and investor perceptions of the investment opportunity associated with our common stock relative to other investment alternatives. In addition, from time to time, the New York Stock Exchange (the "NYSE"), has experienced extreme price and volume fluctuations that have affected the market prices of equity securities of many real estate companies. In the past, stockholders have instituted securities class action litigation following periods of market volatility. If we were involved in securities litigation, we could incur substantial costs, and our resources and the attention of management could be diverted from our business. Furthermore, we currently have limited research coverage by securities and industry analysts. If additional securities or industry analysts do not commence coverage of our company, the long-term trading price for our common stock could be negatively impacted. If one or more of present or future analysts who cover us downgrade our common stock or publish inaccurate or unfavorable research about our business, our stock price would likely decline. If one or more of these analysts cease coverage of us or fail to publish reports on us regularly, demand for our common stock could decrease, which could cause our stock price and trading volume to decline. Our charter limits the number of shares a person may own, which may discourage a takeover that could otherwise result in a premium price to our stockholders. Our charter, with certain exceptions, authorizes our directors to take such actions as are necessary and desirable to preserve our qualification as a REIT. Unless exempted by our board of directors, no person may own more than 9.8% of our outstanding common stock. This restriction may have the effect of delaying, deferring, or preventing a change in control, including an extraordinary Page 13 transaction (such as a merger, tender offer, or sale of all or substantially all of our assets) that might provide a premium price for holders of our common stock. Our organizational documents contain provisions that may discourage a takeover of us and could depress the price of our shares of common stock. Our organizational documents contain provisions that may discourage a takeover of us and could depress the price of our common stock. Our organizational documents contain provisions that may have an anti-takeover effect, inhibit a change of our management, or inhibit, in certain circumstances, tender offers for our common stock or proxy contests to change our board. These provisions include: ownership limits and restrictions on transferability that are intended to enable us to continue to qualify as a REIT; broad discretion of our board to take action, without stockholder approval, to issue new classes of securities that may discourage a third party from acquiring us; the ability, through board action or bylaw amendment to opt-in to certain provisions of Maryland law that may impede efforts to effect a change in control of us; advance notice requirements for stockholder proposals and stockholder nominations of directors; and the absence of cumulative voting rights. In addition, our board of directors may classify or reclassify any unissued preferred stock and establish the preferences; conversion; or other rights, voting powers, restrictions, or limitations as to distributions, qualifications, and terms or conditions of redemption of any such stock. Thus, our board of directors could authorize the issuance of preferred stock with terms and conditions that could have priority as to distributions and amounts payable upon liquidation over the rights of the holders of our common stock. Such preferred stock could also have the effect of delaying, deferring, or preventing a change in control of us, including an extraordinary transaction (such as a merger, tender offer, or sale of all or substantially all of our assets) that might provide a premium price to holders of our common stock. Maryland General Corporation Law provides certain protections relating to deterring or defending hostile takeovers, which may discourage others from trying to acquire control of us and may prevent our stockholders from receiving a premium price for their stock in connection with a business combination. Our board of directors has determined to opt out of certain provisions of Maryland law that may impede efforts to effect a change in control of us as further described below; in the case of the business combination provisions of Maryland law, by resolution of our board of directors; in the case of the control share provisions of Maryland law, pursuant to a provision in our bylaws; and in the case of certain provisions of the Maryland Unsolicited Takeover Act, pursuant to Articles Supplementary. Only upon stockholder approval of an amendment to our Articles of Incorporation, may our board of directors repeal the foregoing opt-outs from the anti- takeover provisions of Maryland General Corporation Law. Under Maryland law, "business combinations" between a Maryland corporation and certain interested stockholders or affiliates of interested stockholders are prohibited for five years after the most recent date on which the interested stockholder becomes an interested stockholder. These business combinations include a merger, consolidation, share exchange, or, in circumstances specified in the statute, an asset transfer or issuance or reclassification of equity securities. Also under Maryland law, control shares of a Maryland corporation acquired in a control share acquisition have no voting rights except to the extent approved by a vote of two- thirds of the votes entitled to be cast on the matter. Shares owned by the acquirer, an officer of the corporation, or an employee of the corporation who is also a director of the corporation are excluded from the vote on whether to accord voting rights to the control shares. These provisions may therefore discourage others from trying to acquire control of us and increase the difficulty of consummating any offer. Similarly, provisions of Title 3, Subtitle 8 of the Maryland General Corporation Law, commonly referred to as the "Maryland Unsolicited Takeover Act," could provide similar anti-takeover protection. Federal Income Tax Risks Failure to qualify as a REIT would reduce our net income and cash available for distributions. Our qualification as a REIT depends upon our ability to meet requirements regarding our organization and ownership, distributions of our income, the nature and diversification of our income and assets, and other tests imposed by the Internal Revenue Code (the "Code"). If we fail to qualify as a REIT for any taxable year, we will be subject to federal and state income tax on our taxable income at corporate rates, including interest and any applicable penalties. In addition, we would generally be disqualified from treatment as a REIT for the four taxable years following the year of losing our REIT status. Losing our REIT status would reduce our net earnings available for investment or distribution to stockholders because of the additional tax liability. In addition, distributions to stockholders would no longer qualify for the dividends-paid deduction, and we would no longer be required to make distributions. If this occurs, we might be required to borrow funds or liquidate some investments in order to pay the applicable tax. Recharacterization of sale-leaseback transactions may cause us to lose our REIT status, which would reduce the return to our stockholders. Page 14 We may purchase properties and lease them back to the sellers of such properties. While we will use our best efforts to structure any such sale-leaseback transaction such that the lease will be characterized as a "true lease," thereby allowing us to be treated as the owner of the property for federal income tax purposes, we can give no assurance that the Internal Revenue Service will not challenge such characterization. In the event that any such sale-leaseback transaction is challenged and recharacterized as a financing transaction or loan for federal income tax purposes, deductions for depreciation and cost recovery relating to such property would be disallowed. If a sale-leaseback transaction were so recharacterized, we might fail to satisfy the REIT qualification asset tests or income tests and, consequently, lose our REIT status. Alternatively, the amount of our REIT taxable income could be recalculated, which might also cause us to fail to meet the distribution requirement for a taxable year. Even if we qualify as a REIT for federal income tax purposes, we may be subject to other tax liabilities that reduce our cash flow and our ability to make distributions to our stockholders. Even if we remain qualified as a REIT for federal income tax purposes, we may be subject to some federal, state, and local taxes on our income or property. For example: • In order to qualify as a REIT, we must distribute annually at least 90% of our REIT taxable income to our stockholders (which is determined without regard to the dividends-paid deduction or net capital gain). To the extent that we satisfy the distribution requirement but distribute less than 100% of our REIT taxable income, we will be subject to federal and state corporate income tax on the undistributed income. • We will be subject to a 4% nondeductible excise tax on the amount, if any, by which distributions we pay in any calendar year are less than the sum of 85% of our ordinary income, 95% of our capital gains net income, and 100% of our undistributed income from prior years. • • If we have net income from the sale of foreclosure property that we hold primarily for sale to customers in the ordinary course of business or other nonqualifying income from foreclosure property, we must pay a tax on that income at the highest corporate income tax rate. If we sell a property, other than foreclosure property, that we hold primarily for sale to customers in the ordinary course of business, our gain would be subject to the 100% "prohibited transaction" tax. • We may perform additional, noncustomary services for tenants of our buildings through our taxable REIT subsidiary, including real estate or non-real-estate-related services; however, any earnings related to such services are subject to federal and state income taxes. Legislative or regulatory action could adversely affect investors. In recent years, numerous legislative, judicial, and administrative changes have been made in the provisions of federal and state income tax laws applicable to investments similar to an investment in our shares. In particular, H.R. 1, which generally takes effect for taxable years beginning on or after January 1, 2018 (subject to certain exceptions), makes many significant changes to the U.S. federal income tax laws that will profoundly impact the taxation of individuals and corporations (including both regular C corporations and corporations that have elected to be taxed as REITs). A number of changes that affect noncorporate taxpayers will expire at the end of 2025 unless Congress acts to extend them. These changes will impact us and our shareholders in various ways, some of which are adverse or potentially adverse compared to prior law. To date, the IRS has issued only limited guidance with respect to certain of the new provisions, and there are numerous interpretive issues that will require guidance. It is highly likely that technical corrections legislation will be needed to clarify certain aspects of the new law and give proper effect to Congressional intent. There can be no assurance, however, that technical clarifications or changes needed to prevent unintended or unforeseen tax consequences will be enacted by Congress in the near future. Additional changes to tax laws are likely to continue to occur in the future, and we cannot assure investors that any such changes will not adversely affect the taxation of our stockholders. Any such changes could have an adverse effect on an investment in shares or on the market value or the resale potential of our properties. Investors are urged to consult with their own tax advisor with respect to the impact of recent legislation on ownership of shares and the status of legislative, regulatory, or administrative developments and proposals, and their potential effect on ownership of shares. To maintain our REIT status, we may be forced to borrow funds or dispose of assets during unfavorable market conditions to make distributions to our stockholders, which could increase our operating costs and decrease the value of an investment in us. We intend to make distributions to our stockholders to comply with the requirements of the Code for REITs and to minimize or eliminate our corporate tax obligations; however, differences between the recognition of taxable income and the actual receipt of cash could require us to sell assets or borrow funds on a short-term or long-term basis to meet the distribution requirements of the Code. Certain types of assets generate substantial disparity between taxable income and available cash, such as real estate that has been financed through financing structures which require some or all of available cash flows to be used to service borrowings. In addition, changes made by H.R. 1 will require us to accrue certain income for U.S. federal income tax purposes no later than when such income is taken into account as revenue on our financial statements (subject to an exception for certain income that is already Page 15 subject to a special method of accounting under the Internal Revenue Code). This could cause us to recognize taxable income prior to the receipt of the associated cash. H.R. 1 also includes limitations on the deductibility of certain compensation paid to our executives, certain interest payments, and certain net operating loss carryforwards, each of which could potentially increase our taxable income and our required distributions. As a result, the requirement to distribute a substantial portion of our taxable income could cause us to: (1) sell assets in adverse market conditions, (2) borrow on unfavorable terms, or (3) distribute amounts that would otherwise be invested in future acquisitions, capital expenditures, or repayment of debt, in order to comply with REIT requirements. Any such actions could increase our costs and reduce the value of our common stock. Further, we may be required to make distributions to our stockholders when it would be more advantageous to reinvest cash in our business or when we do not have funds readily available for distribution. Compliance with REIT qualification requirements may, therefore, hinder our ability to operate solely on the basis of maximizing profits. To maintain our REIT status, we may be forced to forego otherwise attractive opportunities, which could delay or hinder our ability to meet our investment objectives and lower the return to our stockholders. To qualify as a REIT, we must satisfy tests on an ongoing basis concerning, among other things, the sources of our income, the nature of our assets, and the amounts we distribute to our stockholders. We may be required to make distributions to stockholders at times when it would be more advantageous to reinvest cash in our business or when we do not have funds readily available for distribution. Compliance with the REIT requirements may hinder our ability to operate solely on the basis of maximizing profits. ITEM 1B. UNRESOLVED STAFF COMMENTS Not applicable. ITEM 2. PROPERTIES Overview As of December 31, 2017, we owned 19 operating properties, of which 14 were wholly owned and five were owned through unconsolidated joint ventures. These properties are located primarily in New York, San Francisco, Washington, D.C., and Atlanta and were approximately 96.2% leased as of December 31, 2017. Property Statistics The tables below include statistics for the 14 operating properties that we own directly and our proportional share of the annualized lease revenue and rentable square feet for the five properties we own through unconsolidated joint ventures. Annualized lease revenue is an operating metric, calculated as (i) annualized rental payments (defined as base rent plus operating expense reimbursements, excluding rental abatements) for executed and commenced leases as of December 31, 2017, as well as leases executed but not yet commenced for vacant space, and (ii) annualized parking revenues, payable either under the terms of an executed lease or vendor contract ("Annualized Lease Revenue"). Annualized Lease Revenue excludes rental payments for executed leases that have not yet commenced for space covered by an existing lease. Page 16 The following table shows lease expirations of our office properties as of December 31, 2017, during each of the next 10 years and thereafter. This table assumes no exercise of renewal options or termination rights. Year of Lease Expiration Rentable Square Feet (in thousands) 2017 Annualized Lease Revenue (in thousands) Percentage of 2017 Annualized Lease Revenue Vacant 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 Thereafter 307 $ 94 167 532 1,787 475 529 256 783 786 185 2,257 8,158 $ — 6,315 12,583 25,317 64,317 24,978 31,631 18,701 56,036 35,399 13,777 94,123 383,177 —% 2% 3% 7% 17% 7% 8% 5% 15% 9% 4% 23% 100% The following table shows the geographic locations of our office properties as of December 31, 2017. For more information about our geographic locations, see Note 14, Segment Information, of the accompanying consolidated financial statements. Location New York San Francisco Washington, D.C. Atlanta Boston Los Angeles Other Leased Square Feet (in thousands) 2017 Annualized Lease Revenue (in thousands) Percentage of 2017 Annualized Lease Revenue $ $ 2,388 1,663 846 1,656 225 249 824 7,851 147,318 106,747 53,696 40,509 12,081 8,256 14,570 383,177 38% 28% 14% 11% 3% 2% 4% 100% The following table shows the industry breakdown of our office tenants as of December 31, 2017. Industry Business Services Depository Institutions Engineering & Management Services Communications Legal Services Nondepository Institutions Health Services Electric, Gas, and Sanitary Services Security & Commodity Brokers Real Estate Other(1) Leased Square Feet (in thousands) 2017 Annualized Lease Revenue (in thousands) Percentage of 2017 Annualized Lease Revenue $ $ 1,281 1,021 495 1,010 303 388 476 877 160 200 1,640 7,851 88,033 42,242 28,591 26,135 23,305 22,752 21,395 17,954 11,594 11,062 90,114 383,177 23% 11% 8% 7% 6% 6% 6% 5% 3% 3% 22% 100% (1) No more than 2% is attributable to any individual industry. Page 17 The following table shows the major tenants of our operating properties as of December 31, 2017. Tenant AT&T Wells Fargo Pershing Twitter NYU Westinghouse Electric Yahoo! Other(1) 2017 Annualized Lease Revenue (in thousands) Percentage of 2017 Annualized Lease Revenue $ $ 22,579 20,522 18,251 15,894 15,277 14,570 14,556 261,528 383,177 6% 5% 5% 4% 4% 4% 4% 68% 100% (1) No more than 2% is attributable to any individual tenant. ITEM 3. LEGAL PROCEEDINGS From time to time, we are party to legal proceedings, which arise in the ordinary course of our business. We are not currently involved in any legal proceedings of which the outcome is reasonably likely to have a material adverse effect on our results of operations or financial condition, nor are we aware of any such legal proceedings contemplated by governmental authorities. ITEM 4. MINE SAFETY DISCLOSURES Not applicable. Page 18 PART II ITEM 5. MARKET FOR REGISTRANT'S COMMON EQUITY, RELATED STOCKHOLDER MATTERS, AND ISSUER PURCHASES OF EQUITY SECURITIES Market Information and Holders Our common stock was listed on the NYSE, on October 10, 2013 under the symbol "CXP." Prior to October 10, 2013, our common stock was not listed on a national securities exchange, and there was no established public trading market for our shares. As of January 31, 2018, we had approximately 119.9 million shares of common stock outstanding held by approximately 54,000 stockholders of record. The closing high and low prices for our stock and dividends declared during 2017 and 2016 were as follows: 2017 Quarters: First Second Third Fourth 2016 Quarters: First Second Third Fourth Distributions High Low Dividends $ $ $ $ $ $ $ $ 23.43 23.13 22.63 23.16 23.20 22.77 24.63 22.22 $ $ $ $ $ $ $ $ 21.20 21.45 20.62 20.94 19.81 20.20 21.24 20.47 $ $ $ $ $ $ $ $ 0.20 0.20 0.20 0.20 0.30 0.30 0.30 0.30 We intend to make distributions each taxable year (not including a return of capital for federal income tax purposes) equal to at least 90% of our taxable income. One of our primary goals is to pay regular quarterly distributions to our stockholders. The amount of distributions paid and the taxable portion thereof in prior periods are not necessarily indicative of amounts anticipated in future periods. The amount of distributions to common stockholders is determined by our board of directors and is dependent upon a number of factors including funds deemed available for distribution, based principally on our current and future projected operating cash flows, reduced by capital requirements necessary to maintain our existing portfolio. In determining the amount of distributions to common stockholders, we also consider our future capital needs and future sources of liquidity, as well as the annual distribution requirements necessary to maintain our status as a REIT under the Code. Investments in new property acquisitions and first- generation capital improvements, as well as equity repurchases, are generally funded with recycled capital proceeds from property sales, debt, or cash on hand. Page 19 Performance Graph The following graph compares the cumulative total return of our common stock with the S&P 500 Index, Morgan Stanley REIT Index, and the FTSE NAREIT US Real Estate Index for the period beginning on October 10, 2013 (the date of our initial listing on the NYSE) through December 31, 2016. Beginning with the year-ended December 31, 2017, we have selected the FTSE NAREIT Equity Office Index to replace the FTSE NAREIT US Real Estate Index to measure our relative total stockholder return. The FTSE NAREIT Equity Office Index is used as the basis for measuring our equity compensation. The graph assumes a $100 investment in each of the indices on October 10, 2013, and the reinvestment of all dividends. Index Columbia Property Trust S&P 500 Index Morgan Stanley REIT Index FTSE NAREIT US Real Estate Index FTSE NAREIT Equity Office Index $ $ $ $ $ October 10, 2013 December 31, 2013 December 31, 2014 December 31, 2015 December 31, 2016 December 31, 2017 100.00 100.00 100.00 100.00 100.00 $ $ $ $ $ 112.10 109.70 97.70 97.68 99.42 $ $ $ $ $ 119.00 124.70 127.38 127.40 125.13 $ $ $ $ $ ` 115.70 126.40 130.60 131.30 125.49 $ $ $ $ $ 112.50 141.50 141.90 141.60 142.01 $ $ $ $ $ 124.00 172.40 149.00 147.10 149.46 Page 20 Share Repurchases Our board of directors approved a stock repurchase program, which authorized us to buy up to $200 million of our common stock from September 4, 2015 through September 4, 2017 (the "2015 Stock Repurchase Program"); and our board of directors authorized a second stock repurchase program to purchase up to an aggregate of $200.0 million of our common stock from September 4, 2017 through September 4, 2019 (the "2017 Stock Repurchase Program"). During the quarter ended December 31, 2017, we did not purchase or retire any shares in accordance with the 2017 Stock Repurchase Program. Activity relates to the remittance of shares for income taxes associated with accelerated vesting under the LTIP (see Note 8, Equity, to the accompanying consolidated financial statements). Period October 2017 November 2017(1) December 2017(1) Total Number of Shares Purchased Average Price Paid per Share Total Number of Shares Purchased as Part of Publicly Announced Plan Maximum Approximate Dollar Value Available for Future Purchase(2) — $ 336 15,885 $ $ — 22.77 22.95 — $ — $ — $ 194,826,742 194,826,742 194,826,742 (1) All activity for November and December 2017 relates to the remittance of shares for income taxes associated with accelerated vesting of certain stock grants made under the LTIP (See Note 8, Equity, to the accompanying consolidated financial statements). (2) Amounts available for future purchase relate only to our 2017 Stock Repurchase Program and represent the remainder of the $200 million authorized by our board of directors for share repurchases. Page 21 ITEM 6. SELECTED FINANCIAL DATA The following selected financial data for 2017, 2016, 2015, 2014, and 2013 should be read in conjunction with the accompanying consolidated financial statements and related notes in Item 8, Financial Statements and Supplementary Data, hereof (amounts in thousands, except per-share data). 2017 2016 2015 2014 2013 As of December 31, Total assets(1) Total stockholders' equity Outstanding debt Outstanding long-term debt Obligations under capital leases Total revenues(2) Revenues from discontinued operations(2) Income (loss) from unconsolidated joint venture Net income Net cash provided by operating activities Net cash provided by (used in) investing activities Net cash provided by (used in) financing activities Distributions paid(3) Net proceeds raised through issuance of our common stock(3) Stock repurchases(3)(4) Net debt and bond proceeds (repayments)(3) Acquisitions, earnest money paid, and investments in real estate(3) Per Weighted-Average Common Share Data: Net income – basic Net income – diluted Distributions declared Weighted-average common shares outstanding – basic Weighted-average common shares outstanding – diluted $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ 4,587,301 2,787,823 1,489,179 1,477,563 120,000 2013 526,578 60,046 — 15,720 218,329 4,511,539 2,531,936 1,674,176 1,302,000 120,000 $ $ $ $ $ 4,299,793 2,502,768 1,424,602 1,302,602 120,000 $ $ $ $ $ 4,678,118 2,614,194 1,735,063 1,577,063 120,000 $ $ $ $ $ 4,734,240 2,733,478 1,680,066 1,469,245 120,000 Years Ended December 31, 2017 2016 2015 2014 289,000 $ 473,543 $ 566,065 $ 540,797 — $ — $ — $ 119 $ $ $ $ $ $ $ 2,651 176,041 61,924 $ $ $ (7,561) $ (1,142) $ — $ 44,619 223,080 $ $ 92,635 236,906 $ $ 84,821 193,091 $ $ $ (347,723) $ 525,613 (576,699) $ (23,788) $ 495,389 79,281 109,561 $ $ (535,264) $ 148,474 $ 263,474 112,570 $ $ (163,183) $ (667,417) 149,962 $ 191,473 — $ — $ — $ (59,462) $ (53,986) $ (17,057) $ — $ — $ 249,573 $ (311,769) $ 378,995 $ (11,739) $ 46,402 (349,843) (160,940) (691,574) $ (39,521) $ (1,145,402) $ (416,991) $ (44,856) 1.45 1.45 0.80 $ $ $ 0.68 0.68 1.20 $ $ $ 0.36 0.36 1.20 $ $ $ 0.74 0.74 1.20 $ $ $ 0.12 0.12 1.44 120,795 123,130 124,757 124,860 134,085 121,159 123,228 124,847 124,918 134,085 (1) The amounts for 2014 and 2013 have been adjusted to conform with 2017, 2016, and 2015 presentation by reclassifying debt issuance costs, other than those related to our revolving credit facility, from total assets to an offset to outstanding debt. (2) The amounts for 2014 and 2013 have been adjusted to classify revenues generated by certain sold properties as discontinued operations. (3) Activity is presented on a cash basis. Please refer to our accompanying consolidated statements of cash flows. (4) Stock repurchases in 2013 relate to redemptions under a tender offer and a redemption plan in place prior to our listing. Stock repurchases in 2017, 2016, and 2015 were made under board-approved stock repurchase plans or in settlement of taxes related to stock compensation. Page 22 ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS The following discussion and analysis should be read in conjunction with the Selected Financial Data in Item 6, Selected Financial Data, above and our accompanying consolidated financial statements and notes thereto. See also Cautionary Note Regarding Forward-Looking Statements preceding Part I. Executive Summary Our primary strategic objective is to generate long-term shareholder returns from a combination of growing cash flows and appreciation in the values of our properties, by owning and operating high-quality office properties principally located in high- barrier-to-entry markets. We concentrate on office buildings that are competitive within the top tier of their markets or that will be repositioned as such through value-add initiatives. In addition, our investment objectives include optimizing our portfolio allocation between stabilized investments and more growth-oriented, value-add investments, with an emphasis on central business districts and multi-tenant buildings. We recently completed a multi-year capital recycling program that involved selling more than 50 properties in geographically dispersed markets for aggregate proceeds of $3.6 billion, and reinvested this capital in New York, San Francisco, Washington, D.C., and Boston. During the second half of 2017, we executed the following transactions: • • On July 6, 2017, we formed a strategic partnership with Allianz Real Estate of America LLC ("Allianz") to increase our operating scale in key markets by freeing-up capital for additional investment. We consummated the partnership by simultaneously selling a 22.5% interest in two of our San Francisco properties, 333 Market Street and University Circle, to Allianz for $234.0 million, and by acquiring a 49.5% interest in 114 Fifth Avenue in Manhattan from Allianz for $108.9 million. In February 2018, we sold an additional 22.5% interest in 333 Market Street and University Circle to Allianz for $235.3 million. On October 11, 2017, we acquired a 55% interest in 1800 M Street, a 10-story office building in Washington, D.C., for $231.6 million through a joint venture with Allianz. On October 11, 2017, we acquired 245-249 West 17th Street, two interconnected 12- and six-story towers totaling 281,000 square feet of office and retail space, and 218 West 18th Street, a 12-story, 166,000-square-foot office building, in New York for $514.1 million. On November 28, 2017, we acquired 149 Madison Avenue in New York, a 12-story, 127,000-square-foot office building for $87.7 million, subject to a ground lease that expired in January 2018. We are planning to redevelop this property. We will continue to pursue strategic investment opportunities in our target markets, as well as selective property dispositions. • • Leasing continues to be a key area of focus for both vacant space and upcoming expirations. During 2017, we have leased over 2.0 million square feet of space and addressed some of our most significant near-term expirations and vacancies: • • • • At University Circle, we executed a five-year, 119,000-square-foot lease renewal with DLA Piper to extend the lease to June 2023 and address our most significant 2018 expiration. At 650 California Street, we executed an eight-year, 86,000- square-foot lease with Affirm; a 22,000-square-foot renewal and expansion with an existing tenant; and a 12-year, 61,000- square-foot lease with WeWork. In New York, at 229 West 43rd Street, we expanded Snap Inc.'s leased space by 58,000 square feet to a total of 154,000 square feet, and extended the lease to 2032; and at 315 Park Avenue South, executed 68,000 square feet of new leasing, and a 17,000-square-foot lease expansion with Bustle Media Group. In Atlanta, at One Glenlake, we executed a 10-year, 66,000-square-foot lease, and an 11-year, 40,000-square-foot lease renewal and expansion along with several smaller leases. At Three Glenlake, we executed a 12-year, 161,000-square- foot lease with Arby's. This lease is for a portion of the space vacated by the exisiting tenant, whose lease is expiring in December 2018. As a result of this leasing activity, the One & Three Glenlake property is 99.3% leased at year end. In Pittsburgh, at Cranberry Woods, we executed a lease renewal and extension with Westinghouse, extending the 824,000- square-foot lease to 2032. Page 23 We continue to maintain a strong and flexible balance sheet with a weighted-average cost of borrowing of 3.35%(1) per annum as of December 31, 2017. Our debt capital allocation favors unsecured borrowings with 92%(1) of our portfolio unencumbered by mortgages. Our debt maturities are well-laddered over the next nine years, and $752.0 million of the borrowings outstanding at year-end may be repaid prior to maturity, in part or in full, without penalty. Our stock repurchase program allows us to take advantage of market opportunities from time to time when we believe our stock is undervalued. During 2017, we repurchased $57.6 million of our common stock (2.7 million shares at an average price of $21.46 per share). Since September 2015, under our stock repurchase programs, we have repurchased an aggregate of $121.4 million of common stock at an average price of $21.85 per share. (1) Statistics include our ownership interest in the gross real estate assets and debt at properties held through unconsolidated joint ventures as described in Note 4, Unconsolidated Joint Ventures, of the accompanying financial statements; and exclude the 263 Shuman mortgage note, as the note matured in July 2017 and we are in the process of transferring the property to the lender. Key Performance Indicators Our operating results depend primarily upon the level of income generated by the leases at our properties. Occupancy and rental rates are critical drivers of our lease income. Over the last year, our portfolio percentage leased ranged from 90.6% at December 31, 2016 to 96.2% at December 31, 2017. The following table sets forth details related to recent leasing activities, which drive changes in our rental revenues: Total number of leases Square feet of leasing – renewal(1) Square feet of leasing – new(1) Total square feet of leasing Average lease term (months) Tenant improvements, per square foot – renewal Tenant improvements, per square foot – new Tenant improvements, per square foot – all leases Leasing commissions, per square foot – renewal Leasing commissions, per square foot – new Leasing commissions, per square foot – all leases Rent leasing spread – renewal(2) Rent leasing spread – new(3) Rent leasing spread – all leases(2)(3) Years Ended December 31, 2017 2016 62 1,288,056 716,513 2,004,569 $ $ $ $ $ $ 103 20.17 85.55 55.09 12.37 27.76 20.59 28.2% 63.3% 43.6% 54 275,653 746,290 1,021,943 316 35.75 162.03 155.16 14.31 41.91 40.41 27.4% 18.5% 19.0% $ $ $ $ $ $ (1) Includes our proportionate share of renewal and new leasing at properties owned through unconsolidated joint ventures. (2) Rent leasing spreads for renewal leases are calculated based on the change in base rental income measured on a straight-line basis. (3) Rent leasing spreads for new leases are calculated only for space that has been vacant less than one year, and are measured on a straight- line basis. In 2017, rent leasing spreads have been significantly positive (43.6%) due to extending the 119,000-square-foot lease with DLA Piper at University Circle in San Francisco and leasing 230,000 square feet at 650 California Street in San Francisco. The leasing at 650 California Street has required significant tenant improvements; however, the net economic impact of leasing at 650 California Street is favorable. Positive rent leasing spreads for renewal leases are partially offset by a slight rent roll-down for the 824,000- square-foot lease extension and amendment executed with Westinghouse at Cranberry Woods in Pittsburgh in the fourth quarter of 2017. In 2016, we executed a new 390,000-square-foot, 30-year lease at our 222 East 41st Street property with NYU Langone Medical, which resulted in positive rent leasing spreads of 14.4%, tenant improvements of $180.10 per square foot, and leasing commissions of $44.90 per square foot. Over the next 12 months, approximately 94,000 square feet of our leases (approximately 2% of our office portfolio based on revenues) are scheduled to expire. Liquidity and Capital Resources Overview Cash flows generated from the operation of our properties are primarily used to fund recurring expenditures and stockholder dividends. The amount of distributions to common stockholders is determined by our board of directors and is dependent upon a Page 24 number of factors, including funds deemed available for distribution based principally on our current and future projected operating cash flows, reduced by capital requirements necessary to maintain our existing portfolio. In determining the amount of distributions to common stockholders, we also consider our future capital needs and future sources of liquidity, as well as the annual distribution requirements necessary to maintain our status as a REIT under the Code. We have transformed the composition of our portfolio by selling suburban assets and reinvesting in assets in high-barrier-to-entry markets that offer lower initial yields and higher potential for growth over time. As a result, our board of directors elected to adjust our payout level to be consistent with our current investment objectives, by reducing the quarterly stockholder distribution rate from $0.30 per share to $0.20 per share beginning with the first quarter of 2017. This rate has been maintained through the first quarter of 2018. We believe this dividend rate is sustainable over the near and medium term and offers the potential for growth over the long term. Investments in new property acquisitions and first-generation capital improvements are generally funded with capital proceeds from property sales, debt, or cash on hand. Short-Term Liquidity and Capital Resources During 2017, we generated net cash flows from operating activities of $61.9 million, which consists primarily of receipts from tenants for rent and reimbursements, reduced by payments for operating costs, administrative expenses, interest expense, and lease inducements. During the same period, we paid total distributions to stockholders of $109.6 million, which included dividend payments for four quarters ($36.7 million for the fourth quarter of 2016 and an aggregate of $72.9 million for the first three quarters of 2017). Distributions to stockholders exceeded net cash flow from operating activities for 2017 primarily due to the impact of timing differences between selling assets and redeploying capital, and of new and renewal leases in free rent periods. Properties acquired in 2017 and recent leases are expected to contribute to additional cash flow from operations in future periods. During 2017, we sold five wholly owned properties and partial interests in two additional properties for net proceeds of $737.6 million. We used these proceeds, along with a $300.0 million bridge loan and borrowings on our line of credit, to fund acquisitions of three wholly owned properties for $604.8 million and partial interests in two properties for $353.6 million; the repayment of $197.8 million of mortgage notes; leasing and capital projects at our consolidated and joint venture-owned properties of $129.0 million; and share repurchases of $59.5 million. Over the short-term, we expect our primary sources of capital to be operating cash flows and debt. We expect that our principal demands for funds will be property acquisitions, capital improvements to our existing portfolio, stock repurchases, stockholder distributions, operating expenses, and interest and principal payments on current and maturing debt. On February 1, 2018, we sold a second 22.5% interest in University Circle and 333 Market Street to our joint venture partner, Allianz, for $235.3 million. We used the proceeds from this transaction to reduce borrowing on our Revolving Credit Facility and the $300 Million Bridge Loan, both described below. We believe that we have adequate liquidity and capital resources to meet our other current obligations as they come due, including our remaining 2018 debt maturities of $202.9 million. As of February 2, 2018, we had access to $440 million of the borrowing capacity under the Revolving Credit Facility. Long-Term Liquidity and Capital Resources Over the long term, we expect that our primary sources of capital will include operating cash flows, select property dispositions, and proceeds from secured or unsecured borrowings. We expect that our primary uses of capital will continue to include stockholder distributions; repaying or refinancing debt; acquisitions; and capital expenditures, such as building improvements, tenant improvements, and leasing costs. Consistent with our financing objectives and operational strategy, we have generally maintained debt levels less than 40% of the cost of our assets. We believe that preserving investor capital while generating stable current income is in the best interest of our stockholders. Our debt-to-real-estate-asset ratio is calculated using the outstanding debt balance and real estate at cost. As of December 31, 2017, our debt-to-real-estate-asset ratio, including 51% of the debt and real estate at the Market Square Joint venture, which we own through an unconsolidated joint venture, was approximately 38.7%. Bridge Loan We have a $300.0 million, one-year, unsecured loan (the "$300 Million Bridge Loan"), which is set to mature on November 27, 2018. The $300 Million Bridge Loan bears interest at either (ii) LIBOR, plus an applicable margin ranging from 0.90% to 1.75% for LIBOR loans, or (ii) an alternate base rate, plus an applicable margin ranging from 0.00% to 0.75%. The $300 Million Bridge Loan provides for one six-month extension option to May 24, 2019, subject to certain fees and the satisfaction of certain other conditions. Page 25 Revolving Credit Facility Our Revolving Credit Facility has a capacity of $500.0 million and matures in July 2019, with two six-month extension options. As of December 31, 2017, we had $152.0 million in outstanding borrowings on the Revolving Credit Facility. Amounts outstanding under the Revolving Credit Facility bear interest at the London Interbank Office Rate ("LIBOR"), plus an applicable margin ranging from 0.875% to 1.55% for LIBOR borrowings, or an alternate base rate, plus an applicable margin ranging from 0.00% to 0.55% for base rate borrowings, based on our applicable credit rating. The per annum facility fee on the aggregate revolving commitment (used or unused) ranges from 0.125% to 0.30%, also based on our applicable credit rating. Additionally, we have the ability to increase the capacity of the Revolving Credit Facility, along with the $300 Million Term Loan, which provides for four accordion options for an aggregate additional amount of up to $400 million, subject to certain limitations. Term Loans We have a $300.0 million unsecured term loan, which matures in July 2020 (the "$300 Million Term Loan"), and, along with the Revolving Credit Facility, provides for four accordion options for an aggregate amount of up to $400 million, subject to certain conditions. The $300 Million Term Loan bears interest, at our option, at either (i) LIBOR, plus an applicable margin ranging from 0.90% to 1.75% for LIBOR loans, or (ii) an alternate base rate, plus an applicable margin ranging from 0.00% to 0.75% for base rate loans, based on our applicable credit rating. We have a $150.0 million unsecured term loan, which matures in July 2022 (the "$150 Million Term Loan"). The $150 Million Term Loan bears interest, at our option, at either (i) LIBOR, plus an applicable margin ranging from 0.90% to 1.75% for LIBOR loans, or (ii) alternative base rate, plus an applicable margin ranging from 0.00% to 0.75% for base rate loans. The interest rate on the $150 Million Term Loan is effectively fixed with an interest rate swap agreement, which is designated as a cash flow hedge. Based on the terms of the interest rate swap and our current credit rating, the interest rate on the $150 Million Term Loan is effectively fixed at 3.07%. Debt Covenants The $300 Million Term Loan, $300 Million Bridge Loan, the $150 Million Term Loan, and the Revolving Credit Facility contain the following restrictive covenants: • • • • • • limits the ratio of secured debt to total asset value, as defined therein, to 40% or less; requires the fixed charge coverage ratio, as defined therein, to be at least 1.50:1.00; limits the ratio of debt to total asset value, as defined therein, to 60% or less; requires the ratio of unencumbered adjusted net operating income, as defined therein, to unsecured interest expense, as defined therein, to be at least 1.75:1.00; requires the ratio of unencumbered asset value, as defined therein, to total unsecured debt, as defined therein, to be at least 1.66:1.00; and requires maintenance of certain minimum tangible net worth balances. As of December 31, 2017, we believe we were in compliance with the restrictive covenants on these outstanding debt obligations. Bonds Payable In August 2016, we issued $350.0 million of 10-year, unsecured 3.650% senior notes at 99.626% of their face value (the "2026 Bonds Payable"). We received proceeds from the 2026 Bonds Payable, net of fees, of $346.4 million, which were used to prepay our $250 million bonds payable, originally due in April of 2018. The 2026 Bonds Payable require semi-annual interest payments in February and August based on a contractual annual interest rate of 3.650%. The principal amount of the 2026 Bonds Payable is due and payable on the maturity date, August 15, 2026. In March 2015, we issued $350.0 million of 10-year, unsecured 4.150% senior notes at 99.859% of their face value (the "2025 Bonds Payable"). We received proceeds from the 2025 Bonds Payable, net of fees, of $347.2 million, a portion of which was used to repay a bridge loan, which was originated in January 2015. The 2025 Bonds Payable require semi-annual interest payments in April and October based on a contractual annual interest rate of 4.150%. The principal amount of the 2025 Bonds Payable is due and payable on the maturity date, April 1, 2025. The restrictive covenants on the 2026 Bonds Payable and the 2025 Bonds Payable as defined pursuant to an indenture include: • • a limitation on the ratio of debt to total assets, as defined, to 60%; limits to our ability to incur debt if the consolidated income available for debt service to annual debt service charge, as defined, for four previous consecutive fiscal quarters is less than 1.5:1 on a pro forma basis; Page 26 • • limits to our ability to incur liens if, on an aggregate basis for us, the secured debt amount would exceed 40% of the value of the total assets; and a requirement that the ratio of unencumbered asset value, as defined, to total unsecured debt be at least 150% at all times. As of December 31, 2017, we believe we were in compliance with the restrictive covenants on the 2026 Bonds Payable and the 2025 Bonds Payable. Debt Repayments, Maturities, and Interest Payments During 2017 and 2016, we made the following debt repayments: • • • • • • On August 17, 2017, we repaid the $124.8 million balance of the 650 California Street building mortgage note, which was originally scheduled to mature on July 1, 2019. Columbia Property Trust recognized a loss on early extinguishment of debt of $0.3 million related to unamortized deferred financing costs. On March 10, 2017, we repaid the $73.0 million balance of the 221 Main Street building mortgage note, which was originally scheduled to mature on May 10, 2017. Columbia Property Trust recognized a loss on early extinguishment of debt of $45,000 related to unamortized deferred financing costs. On October 3, 2016, a portion of the proceeds from the sale of the 80 Park Plaza Property was used to repay the $99.0 million remaining outstanding balance on our Revolving Credit Facility. On September 2, 2016, the proceeds from the 2026 Bonds Payable, as described above, were used to redeem $250.0 million of seven-year, unsecured 5.875% senior notes due April 2018, including a $17.9 million make-whole payment recorded as an early loss on extinguishment of debt in the accompanying consolidated statement of operations. On June 30, 2016, we used borrowings on the Revolving Credit Facility to repay the $39.0 million SanTan Corporate Center mortgage notes, which were scheduled to mature on October 11, 2016, resulting in the write-off of approximately $10,000 of related unamortized financing costs, which are included in loss on early extinguishment in the accompanying statements of operations. On April 1, 2016, we repaid the $119.0 million remaining on a $300 million, six-month, unsecured loan, which was used to finance a portion of the 229 West 43rd Street Building acquisition in August of 2015 (the "2015 Bridge Loan"). The 2015 Bridge Loan was scheduled to mature on August 4, 2016. We recognized a loss on early extinguishment of debt of $82,000 related to unamortized deferred financing costs. During 2017 and 2016, we made interest payments of approximately $21.5 million and $27.8 million, respectively, related to our term loans, line of credit, and notes payable. During 2017 and 2016, we made interest payments of $27.4 million and $28.0 million, respectively, on our bonds payable. Contractual Commitments and Contingencies As of December 31, 2017, our contractual obligations will become payable in the following periods (in thousands): Contractual Obligations Debt obligations(1)(2) Interest obligations on debt(1)(3) Capital lease obligations(4) Operating lease obligations(5) Total 2018 2019-2020 2021-2022 Thereafter $ 1,790,926 $ 323,176 $ 452,000 $ 150,000 $ 319,920 120,000 1,389,662 60,577 — 9,222 95,856 — 18,622 78,698 120,000 18,872 865,750 84,789 — 1,342,946 Total $ 3,620,508 $ 392,975 $ 566,478 $ 367,570 $ 2,293,485 (1) Includes 51% of the debt and interest obligations for the Market Square Joint Venture, which we own through an unconsolidated joint venture. The Market Square Joint Venture has a $325 million mortgage loan on the Market Square Buildings, which bears interest at 5.07% and matures on July 1, 2023. We guarantee $11.2 million of the Market Square Buildings mortgage loan (see Note 7, Commitments & Contingencies, to the accompanying financial statements). (2) Debt obligations exclude the $49.0 million 263 Shuman Boulevard mortgage note, which matured in July 2017. We are in the process of working to transfer this property to the lender in settlement of the mortgage note. (3) Interest obligations on variable-rate debt are measured at the rate at which they are effectively fixed with interest rate swap agreements (where applicable) or the rate in effect as of December 31, 2017. Interest obligations on all other debt instruments are measured at the contractual rate. See Item 7A, Quantitative and Qualitative Disclosure About Market Risk, for more information regarding our interest rate swaps. (4) Amounts include principal obligations only. We made interest payments on these obligations of $7.2 million during 2017, all of which was funded with interest income earned on the corresponding investments in development authority bonds. Page 27 (5) These obligations are related to ground leases at certain properties, including 49.5% of the ground lease obligation at 114 Fifth Avenue, based on our ownership interest in the unconsolidated joint venture that owns that property, and our corporate office lease. In addition to the amounts shown, certain lease agreements include provisions that, at the option of the tenant, may obligate us to expend capital to expand an existing property or provide other expenditures for the benefit of the tenant, including a commitment to contribute $54.7 million toward remaining leasehold improvements at our 222 East 41st Street property. Results of Operations Overview As of December 31, 2017, Columbia Property Trust owned 19 operating properties, of which 14 were wholly owned and five were owned through unconsolidated joint ventures. These properties are located primarily in New York, San Francisco, Washington, D.C., and Atlanta, and were approximately 96.2% leased as of December 31, 2017. Our period-over-period operating results are heavily impacted by the real estate activities set forth in the Transaction Activity section of Item 1, Business, including acquisitions and dispositions made directly and through unconsolidated joint ventures. Other than real estate transactions, we expect real estate operating income to vary, primarily based on leasing activity over the near term. Comparison of the Year Ended December 31, 2017 Versus the Year Ended December 31, 2016 Rental income was $257.1 million for 2017, which represents a decrease from $366.2 million for 2016. The decrease is primarily due to dispositions ($94.3 million) and transferring University Circle and 333 Market Street to unconsolidated joint ventures ($24.4 million), partially offset by the acquisitions in the fourth quarter of 2017 ($8.4 million). We expect future rental income to vary based on recent and future investing and leasing activities. Tenant reimbursements and property operating costs were $23.5 million and $87.8 million, respectively, for 2017, which represents a decrease from $69.8 million and $155.0 million, respectively, for 2016. The decrease in tenant reimbursements is primarily due to dispositions ($35.5 million), transferring University Circle and 333 Market Street to unconsolidated joint ventures ($4.9 million), and the new net lease at 222 East 41st Street ($3.3 million). The decrease in property operating costs is primarily due to dispositions ($58.3 million), the new net lease at 222 East 41st Street ($9.9 million), and transferring University Circle and 333 Market Street to unconsolidated joint ventures ($5.5 million), partially offset by the acquisitions in the fourth quarter of 2017 ($2.2 million). Tenant reimbursements and property operating costs are expected to vary with future leasing activities and other changes in our portfolio. Hotel income, net of hotel operating costs, was $(0.8) million for 2017, which represents a decrease as compared with $4.0 million for 2016, due to the sale of the Key Center Marriott on January 31, 2017. Asset and property management fee income was $3.8 million for 2017, which represents an increase as compared with $2.1 million for 2016. The increase is due to the asset and property management services we began to provide to several properties owned in unconsolidated joint ventures in 2017, including 333 Market Street, University Circle, and 1800 M Street. Asset and property management fees have also been earned for services provided to the Market Square Joint Venture since its inception in the fourth quarter of 2015. We anticipate future asset and property management fee income to increase as we earn fees from the newly established joint ventures for full periods (see Note 4, Unconsolidated Joint Ventures). Other property income was $3.3 million for 2017, which represents a decrease as compared with $12.8 million for 2016, primarily due to earning an early termination fee of $6.8 million at 222 East 41st Street in June 2016 and $4.0 million for other lease terminations in 2016. The terminated lease at 222 East 41st Street was replaced with a full-building lease, which commenced in the fourth quarter of 2016. Other property operating income is expected to vary in the future, based on additional lease restructuring activities. Asset and property management fee expenses were $0.9 million for 2017, which represents a decrease as compared with $1.4 million for 2016, primarily due to the sale of the Key Center Marriott in January 2017 ($0.4 million). Future asset and property management fee expenses are expected to remain stable in the near term and may increase as a result of future investing activities. Depreciation was $80.4 million for 2017, which represents a decrease as compared with $108.5 million for 2016. The decrease is primarily due to dispositions ($24.5 million) and transferring University Circle and 333 Market Street to unconsolidated joint ventures ($6.6 million), partially offset by acquisitions in the fourth quarter of 2017 ($2.3 million). Depreciation is expected to vary based on recent and future investing activities. Amortization was $32.4 million for 2017, which represents a decrease as compared with $56.8 million for 2016. The decrease is primarily due to intangibles written off due to the early termination or expiration of leases ($11.1 million), dispositions ($10.9 million), and transferring University Circle and 333 Market Street to unconsolidated joint ventures ($2.5 million). We expect future amortization to vary based on recent and future investing activities. Page 28 Effective July 1, 2017, we began to specifically identify general and administrative costs incurred to manage assets owned by our unconsolidated joint ventures. The method for measuring aggregate general and administrative expenses has not changed. Aggregate general and administrative expenses were $36.4 million for 2017, which represents an increase as compared to $33.9 million for 2016, primarily due to additional vesting under our stock-based incentive plan ($3.0 million) and expenses incurred for managing unconsolidated joint ventures ($1.5 million), partially offset by prior-year costs incurred related to the development of our regional management platform ($1.2 million), prior-year lease termination activity ($0.5 million), and prior period bad debt expenses ($0.2 million). General and administrative expenses – corporate are expected to remain at similar levels over the near term; and general and administrative expenses – unconsolidated joint ventures are expected to vary as a result of future joint venture activity. Interest expense was $60.5 million for 2017, which represents a decrease as compared with $67.6 million for 2016, primarily due to mortgage note payoffs ($5.4 million), bond interest savings resulting from the issuance of the 2026 Bonds Payable and redemption of the 2018 Bonds Payable in 2016 ($2.1 million), and an overall reduction in borrowings on our Revolving Credit Facility in the current period ($1.5 million). We expect interest expense to increase in the near term, due to borrowings to fund recent investing activities. Interest and other income was $9.5 million for 2017, which represents an increase as compared with $7.3 million for 2016. The increase is due to earning interest on our large cash balance for the first nine months of 2017 ($2.2 million). The majority of our interest income is earned on investments in development authority bonds with a remaining term of approximately four years as of December 31, 2017. Interest income earned on investments in development authority bonds is entirely offset by interest expense incurred on the corresponding capital leases. We expect interest and other income to decrease slightly over the near term as cash deposits were applied to recent investing activities. We recognized a loss on early extinguishment of debt of $0.3 million and $19.0 million in 2017 and 2016, respectively. In 2017, we repaid two mortgage notes. resulting in the write-off of the related deferred financing costs. In 2016, we incurred an early redemption premium on the settlement of the 2018 Bonds Payable of $17.9 million, and write-offs of deferred financing costs in connection with other early repayments. We expect future gains or losses on early extinguishments of debt to vary with financing activities. We recognized income from unconsolidated joint ventures of $2.7 million for 2017, which represents an increase from a loss on unconsolidated joint ventures of $(7.6) million for 2016. The increase is due to the July 2017 transfer of University Circle and 333 Market Street to unconsolidated joint ventures, in which we retained a 77.5% ownership interest; the July 2017 acquisition of a 49.5% interest in 114 Fifth Avenue; and the October 2017 acquisition of a 55.0% interest in 1800 M Street. Future income or loss from unconsolidated joint ventures will vary as a result of future investing activities and leasing at the properties held in unconsolidated joint ventures. We recognized gains on sales of real estate assets of $175.5 million in 2017, as a result of selling three properties in Houston, Texas, and the Key Center Tower and Marriott in Cleveland, Ohio in January 2017; and selling a 22.5% interest in each of the University Circle property and the 333 Market Street building in July 2017. We recognized gains on sales of real estate assets of $72.3 million in 2016, as a result of selling seven properties in separate transactions during the the year. See Note 3, Real Estate Transactions, of the accompanying financial statements, for additional details of these dispositions. We expect future gains on sales of real estate assets will vary with disposition activity. Net income was $176.0 million, or $1.45 per basic and diluted share, for 2017, which represents an increase from $84.3 million, or $0.68 per basic and diluted share, for 2016. The increase is due to gains on sale of real estate ($103.2 million) and financing activities resulting in interest savings in the current year and losses on early extinguishment of debt in the prior year ($25.8 million), partially offset by lost income from sold properties ($38.4 million). See the "Supplemental Performance Measures" section below for our same-store results compared with the prior year. We expect future earnings to vary as a result of leasing activity at our existing properties and investing activities. Comparison of the Year Ended December 31, 2016 Versus the Year Ended December 31, 2015 Rental income was $366.2 million for 2016, which represents a decrease from $436.0 million for 2015. The decrease is primarily due to current-year and prior-year dispositions ($53.0 million); transferring the Market Square Buildings to a joint venture in the fourth quarter of 2015 ($30.9 million); and vacancy at our 222 East 41st Street property for a portion of 2016 ($7.4 million) while the building was being prepared for NYU's Langone Medical lease to commence, partially offset by additional rental income from the acquisition of the 229 West 43rd Street Building in August 2015 ($19.9 million). Tenant reimbursements and property operating costs were $69.8 million and $155.0 million, respectively, for 2016, which represents an increase from $99.7 million and $188.1 million, respectively, for 2015. The decrease in property operating costs is due to dispositions ($23.4 million) and the transfer of the Market Square Buildings to a joint venture ($16.4 million), partially offset by Page 29 additional property operating costs from the acquisition of the 229 West 43rd Street Building ($6.6 million). The proportional decrease in tenant reimbursements is also due to dispositions ($17.3 million) and the transfer of the Market Square Buildings to a joint venture ($9.4 million), partially offset by additional tenant reimbursements from the acquisition of the 229 West 43rd Street Building ($2.9 million). Hotel income, net of hotel operating costs, was $4.0 million for 2016, which represents a decrease as compared with $4.7 million for 2015, due to additional group bookings and meetings at the hotel. Asset and property management fee income was $2.1 million for 2016, which represents an increase as compared with $0.6 million for 2015. We began earning such fees in October 2015, upon the formation of the Market Square Joint Venture. Other property income was $12.8 million for 2016, which represents an increase as compared with $5.4 million for 2015, primarily due to an early termination at our 222 East 41st Street property ($6.8 million). Asset and property management fees were $1.4 million for 2016, which represents a decrease as compared with $1.8 million for 2015, primarily due to transferring Market Square to a joint venture in the fourth quarter of 2015. Depreciation was $108.5 million for 2016, which represents a decrease as compared with $131.5 million for 2015, primarily due to dispositions ($16.3 million) and transferring Market Square to a joint venture ($11.6 million), partially offset by additional depreciation from the acquisition of 229 West 43rd Street in August 2015 ($5.4 million). Amortization was $56.8 million for 2016, which represents a decrease as compared with $87.1 million for 2015. The decrease is primarily due to dispositions ($16.1 million); intangibles written off related to the expiration or termination of leases ($9.8 million); and transferring Market Square to a joint venture ($5.9 million); partially offset by additional amortization from the acquisition of 229 West 43rd Street in August 2015 ($2.6 million). General and administrative expenses – corporate was $33.9 million for 2016, which represents an increase from $29.7 million for 2015. The increase is due to costs incurred to develop our regional management and investment platform ($2.9 million), and additional vesting under our stock-based incentive compensation plan ($1.0 million). We incurred acquisition expenses of $3.7 million for 2015 in connection with acquiring three properties in January 2015 and the 229 West 43rd Street Building in New York in August 2015. See Note 3, Real Estate Transactions, to the accompanying financial statements for additional details. We adopted Accounting Standards Update 2017-01, Clarifying the Definition of a Business, in the fourth quarter of 2017. (See Note 2, Summary of Significant Accounting Policies, of the accompanying consolidated financial statements.) As a result, we capitalized acquisition costs related to fourth quarter 2017 acquisitions and do not anticipate incurring future expenses related to acquisitions of properties. Interest expense was $67.6 million for 2016, which represents a decrease as compared with $85.3 million for 2015, primarily due to transferring the Market Square mortgage note to a joint venture ($13.6 million) and repaying mortgage loans ($5.4 million), partially offset by the 2025 Bonds Payable outstanding for the entire year ($3.0 million). Interest and other income was stable at $7.3 million for 2016 and 2015. We recognized a loss on interest rate swaps that do not qualify for hedge accounting treatment of approximately $1.1 million for 2015, primarily due to the settlement of the swap related to a $450 million term loan, which was replaced with other unsecured borrowings in July 2015. We recognized a loss on early extinguishment of debt of $19.0 million and $3.1 million in 2016 and 2015, respectively. In 2016, we incurred an early redemption premium on the settlement of the 2018 Bonds Payable of $17.9 million, and write-offs of deferred financing costs in connection with other early repayments. In 2015, we incurred a prepayment premium of $2.1 million related to the early repayment of the 215 Diehl Building mortgage note, approximately two years prior to its maturity and write-offs of deferred financing costs in connection with other early repayments. We recognized a loss from unconsolidated joint ventures of $7.6 million for 2016, which represents an increase as compared with a loss of $1.1 million for 2015. The Market Square Joint Venture was formed on October 28, 2015. Since inception, real estate operating income from Market Square has been reduced by interest incurred on the property's $325 million mortgage note, and Market Square experienced reduced occupancy levels throughout 2016 due to lease expirations. We recognized gains on sales of real estate assets of $72.3 million in 2016, as a result of selling six properties in separate transactions for an aggregate of $660.5 million, exclusive of transaction costs. We recognized gains on sales of real estate assets of $23.9 million in 2015, as a result of selling 12 properties for an aggregate of $498.3 million, exclusive of transaction costs, and the sale Page 30 of a 49% interest in Market Square for a gross sales price of $120.0 million. See Note 3, Real Estate Transactions, of the accompanying financial statements, for additional details of these dispositions. Net income was $84.3 million, or $0.68 per basic and diluted share, for 2016, which represents an increase from $44.6 million, or $0.36 per basic and diluted share, for 2015. The increase is due to additional year-over-year gains on sales of real estate ($48.5 million) and a decrease in interest expense and other financing costs ($17.7 million), partially offset by additional year-over-year losses on early extinguishment of debt ($15.8 million), lower earnings due to property sales ($5.3 million), and increase in equity in loss of unconsolidated joint ventures ($6.4 million) due to reduced occupancy at Market Square. See "Supplemental Performance Measures" section below for our same-store results compared with the prior year period. NOI by Geographic Segment We consider geographic location when evaluating our portfolio composition, and in assessing the ongoing operations and performance of our properties. As of December 31, 2017, we aggregated our properties into the following geographic segments: New York, San Francisco, Atlanta, Washington, D.C., Boston, Los Angeles, and all other office markets. All other office markets consists of properties in low-barrier-to-entry geographic locations, in which we do not have a substantial presence and do not plan to make further investments. See Note 14, Segment Information, to the accompanying consolidated financial statements. The following table presents NOI by geographic segment (in thousands): New York San Francisco Atlanta Washington, D.C. Boston Los Angeles All other office markets Total office segments Hotel Corporate Total For the Years Ended December 31, 2017 2016 2015 $ 73,893 $ 70,038 $ 76,163 33,603 18,496 5,380 4,529 18,550 230,614 (913) (826) 80,529 32,939 16,372 5,114 4,523 92,756 302,271 3,988 (158) 54,692 83,826 31,912 36,958 12,519 4,853 129,199 353,959 4,593 (586) $ 228,875 $ 306,101 $ 357,966 Comparison of the Year Ended December 31, 2017 Versus the Year Ended December 31, 2016 San Francisco NOI has decreased during 2017 due to the sale of a 22.5% interest in both University Circle and 333 Market Street. San Francisco NOI is expected to decrease in the near term as a result of the sale of an additional 22.5% interest in each of these properties, as described in Note 3, Real Estate Transactions, of the accompanying consolidated financial statements. Washington, D.C. NOI has increased during 2017 due to the October 2017 acquisition of a 55% interest in 1800 M Street, as described in Note 3, Real Estate Transactions, of the accompanying consolidated financial statements, which is partially offset by decreased occupancy at 80 M Street and Market Square earlier in the current year. Over the near term, Washington, D.C. NOI is expected to increase as a result of recent leasing activity at 80 M Street and Market Square and recognizing a full period for our interest in 1800 M Street. All other office markets NOI has decreased significantly year over year as a result of asset sales, as described in Note 3, Real Estate Transactions, of the accompanying consolidated financial statements. Hotel The Key Center Marriott, our only hotel, was sold on January 31, 2017. Comparison of the Year Ended December 31, 2016 versus the Year Ended December 31, 2015 Page 31 New York NOI increased year over year as a result of the acquisition of 229 West 43rd Street in August of 2015. San Francisco NOI decrease year over year as a result of decreased occupancy at 650 California Street. Washington, D.C. NOI decreased year over year as a result of selling a 49% interest in Market Square in October of 2015. Boston NOI decreased year over year as a result of selling 550 King Street and Robbins Road in the 11 Property Sale, as described in Note 3, Real Estate Transactions, of the accompanying consolidated financial statements. All other office markets NOI has decreased significantly year over year as a result of asset sales, as described in Note 3, Real Estate Transactions, of the accompanying consolidated financial statements. Supplemental Performance Measures In addition to net income, we measure the performance of the company using certain non-GAAP supplemental performance measures, including: (i) Funds From Operations ("FFO"), (ii) Net Operating Income ("NOI"), and (iii) Same Store Net Operating Income ("Same Store NOI"). These non-GAAP metrics are commonly used by industry analysts and investors as supplemental operation performance measures of REITs and are viewed by management to be useful indicators of operating performance. Historical cost accounting for real estate assets in accordance with GAAP implicitly assumes that the value of real estate assets diminishes predictably over time. Since real estate values instead have historically risen or fallen with market conditions, many industry analysts and investors have considered presentation of operating results for real estate companies using historical cost accounting alone to be insufficient. Management believes that the use of FFO, NOI, and Same Store NOI, combined with net income, improves the understanding of operating results of REITs among the investing public and makes comparisons of REIT operating results more meaningful. Net income is the most comparable GAAP measure to FFO, NOI, and Same Store NOI. Each of these supplemental performance measures exclude expenses that materially impact our overall results of operations and, therefore, should not be considered as a substitute for net income, income from continuing operations before income taxes, or any other measures derived in accordance with GAAP. Furthermore, these metrics may not be comparable to other similarly titled measures used by other companies. Funds From Operations FFO is a non-GAAP measure used by many investors and analysts who follow the real estate industry to measure the performance of an equity REIT. We consider FFO a useful measure of our performance because it principally adjusts for the effects of GAAP depreciation and amortization of real estate assets, which assumes that the value of real estate diminishes predictably over time. Since real estate values have historically risen or fallen with market conditions, we believe that FFO provides a meaningful supplemental measure of our performance. We believe that the use of FFO, combined with the required GAAP presentations, is beneficial in improving our investors' understanding of our operating results and allowing for comparisons among other companies who define FFO as we do. FFO, as defined by the National Association of Real Estate Investment Trusts ("NAREIT"), represents net income (computed in accordance with GAAP), excluding gains or losses on sales of real estate and impairments of real estate assets, plus real estate- related depreciation and amortization, and after adjustments for unconsolidated partnerships and joint ventures, for both continuing and discontinued operations. We compute FFO in accordance with NAREIT's definition, which may differ from the methodology for calculating FFO, or similarly titled measures, used by other companies, and this may not be comparable to those presentations. FFO does not represent amounts available for management's discretionary use because of needed capital replacement or expansion, debt service obligations, or other commitments and uncertainties, nor is it indicative of funds available to fund our cash needs, including our ability to make distributions. Our presentation of FFO should not be considered as an alternative to net income (computed in accordance with GAAP) as an indicator of financial performance. Page 32 Net income reconciles to FFO as follows (in thousands): Reconciliation of Net Income to Funds From Operations: Net income Adjustments: Depreciation of real estate assets Amortization of lease-related costs Depreciation and amortization included in loss from unconsolidated joint venture(1) Gains on sales of real estate assets Total funds from operations adjustments Years Ended December 31, 2017 2016 2015 $ 176,041 $ 84,281 $ 44,619 80,394 32,403 21,288 (175,518) (41,433) 108,543 56,775 8,776 (72,325) 101,769 131,490 87,128 1,606 (23,860) 196,364 240,983 Funds from operations $ 134,608 $ 186,050 $ (1) Reflects our ownership interest in depreciation and amortization for investments in unconsolidated joint ventures. Page 33 Net Operating Income As set forth below, NOI is calculated by deducting property operating costs from rental and other property revenues for continuing operations. As a performance metric consisting of only revenues and expenses directly related to ongoing real estate rental operations, which have been or will be settled in cash, NOI is narrower in scope than FFO. NOI, as we calculate it, may not be directly comparable to similarly titled, but differently calculated, measures for other REITs. We believe that NOI is another useful supplemental performance measure, as it is an input in many REIT valuation models, and it provides a means by which to evaluate the performance of the properties. The major factors influencing our NOI are property acquisitions and dispositions, occupancy levels, rental rate increases or decreases, and the recoverability of operating expenses. Same Store Net Operating Income We also evaluate the performance of our properties, on a "same store" basis, using a metric referred to as Same Store NOI. We view Same Store NOI as a useful supplemental performance measure because it improves comparability between periods by eliminating the effects of changes in the composition of our portfolio. On an individual property basis, Same Store NOI is computed in a consistent manner as NOI (as described in the previous section). For the periods presented, we have defined our same store portfolio as those properties that have been continuously owned and operating since January 1, 2016. NOI and Same Store NOI are calculated as follows for the years ended December 31, 2017 and 2016 (in thousands): Same-Store NOI - wholly-owned properties: Revenues: Rental income Tenant reimbursements Other property income Total revenues Operating expenses Same Store NOI – wholly-owned properties(1) Same Store NOI – joint-venture owned properties(2) Total Same-Store NOI NOI from acquisitions(3) NOI from dispositions(4) NOI Years Ended December 31, 2017 2016 $ $ 217,615 $ 18,221 3,242 239,078 (79,508) 159,570 51,665 211,235 10,793 6,847 228,875 $ 213,161 22,868 12,052 248,081 (83,742) 164,339 49,522 213,861 — 92,240 306,101 (1) Reflects NOI from properties that were wholly owned for the entirety of the periods presented. (2) For all periods presented, reflects our ownership interest in NOI for properties owned through unconsolidated joint ventures as of December 31, 2017 (Market Square, University Circle, 333 Market Street, 114 Fifth Avenue, and 1800 M Street). The NOI for properties held through unconsolidated joint ventures is included in income (loss) from unconsolidated joint ventures in our accompanying consolidated statements of operations. See Note 4, Unconsolidated Joint Ventures, of the accompanying consolidated financial statements, for more information. (3) Reflects activity for the following properties acquired since January 1, 2016: 55% of 1800 M Street, 218 West 18th Street, and 245-249 West 17th Street, and 49.5% of 114 Fifth Avenue. (4) Reflects activity for the following properties sold since January 1, 2016: 22.5% of University Circle, and 22.5% of 333 Market Street, Key Center Tower, Key Center Marriott, 515 Post Oak, Energy Center, 5 Houston Center, SanTan Corporate Center, Sterling Commerce, 80 Park Plaza, 9127, 9189, 9191 & 9193 South Jamaica Street, 800 North Frederick, and 100 East Pratt. The slight decline in Same Store NOI is due to a temporary decline in occupancy at 650 California Street in San Francisco and at 315 Park Avenue South in New York. Anticipated lease expirations at 650 California Street and at 315 Park Avenue South allowed us to roll below-market leases up to market rates with recent leasing activities. As a result, future Same Store NOI is expected to increase at these properties and across the portfolio. The slight decline in Same Store NOI from prior year is also impacted by a lease expiration at 263 Shuman Boulevard, which is in the process of being returned to the lender in settlement of the mortgage note. Page 34  A reconciliation of Net Income to NOI and Same Store NOI is presented below (in thousands): Years Ended December 31, 2017 2016 $ 176,041 $ Net income Depreciation Amortization General and administrative – corporate General and administrative – joint venture Net interest expense Interest income from development authority bonds Loss on early extinguishment of debt Income tax expense Asset and property management fee income Adjustment included in loss from unconsolidated joint venture Gains on sales of real estate assets Net operating income Same Store NOI – joint venture owned properties(1) NOI from acquisitions(2) NOI from dispositions(3) Same Store NOI - wholly owned properties(4) $ $ 80,394 32,403 34,966 1,454 58,187 (7,200) 325 (213) (3,782) 31,818 (175,518) 228,875 $ (51,665) (10,793) (6,847) 159,570 $ 84,281 108,543 56,775 33,876 — 67,538 (7,200) 18,997 445 (2,122) 17,293 (72,325) 306,101 (49,522) — (92,240) 164,339 (1) For all periods presented, reflects our ownership interest in NOI for properties owned through unconsolidated joint ventures as of December 31, 2017 (Market Square, University Circle, 333 Market Street, 114 Fifth Avenue, and 1800 M Street). The NOI for properties held through unconsolidated joint ventures is included in income (loss) from unconsolidated joint ventures in our accompanying consolidated statements of operations. See Note 4, Unconsolidated Joint Ventures, of the accompanying consolidated financial statements, for more information. (2) Reflects activity for the following properties acquired since January 1, 2016: 55% of 1800 M Street, 218 West 18th Street, and 245-249 West 17th Street, and 49.5% of 114 Fifth Avenue. (3) Reflects activity for the following properties sold since January 1, 2016: 22.5% of University Circle, and 22.5% of 333 Market Street, Key Center Tower, Key Center Marriott, 515 Post Oak, Energy Center, 5 Houston Center, SanTan Corporate Center, Sterling Commerce, 80 Park Plaza, 9127, 9189, 9191 & 9193 South Jamaica Street, 800 North Frederick, and 100 East Pratt. (4) Reflects NOI from properties that were wholly owned for the entirety of the periods presented. Page 35 Portfolio Information As of December 31, 2017, we owned 19 operating properties, of which 14 were wholly owned and five were owned through unconsolidated joint ventures. These properties are located primarily in New York, San Francisco, Washington, D.C., and Atlanta, contain a total of 9.2 million rentable square feet, and were approximately 96.2% leased as of December 31, 2017. As of December 31, 2017, our five highest geographic reportable segments, based on Annualized Lease Revenue, were as follows. For more information about our reportable segments, see Note 14, Segment Information, to the accompanying consolidated financial statements. Location New York San Francisco Washington, D.C. Atlanta Boston Leased Square Feet (in thousands) 2017 Annualized Lease Revenue (in thousands) Percentage of 2017 Annualized Lease Revenue $ $ 2,388 1,663 846 1,656 225 6,778 147,318 106,747 53,696 40,509 12,081 360,351 38% 28% 14% 11% 3% 94% As of December 31, 2017, our five highest tenant industry concentrations, based on Annualized Lease Revenue, were as follows: Industry Business Services Depository Institutions Engineering & Management Services Communications Legal Services Leased Square Feet (in thousands) 2017 Annualized Lease Revenue (in thousands) Percentage of 2017 Annualized Lease Revenue $ $ 1,281 1,021 495 1,010 303 4,110 88,033 42,242 28,591 26,135 23,305 208,306 23% 11% 8% 7% 6% 55% As of December 31, 2017, our five highest tenant concentrations, based on Annualized Lease Revenue, were as follows: Tenant AT&T Wells Fargo Pershing Twitter NYU 2017 Annualized Lease Revenue (in thousands) Percentage of 2017 Annualized Lease Revenue $ $ 22,579 20,522 18,251 15,894 15,277 92,523 6% 5% 5% 4% 4% 24% For more information on our portfolio, see Item 2, Properties. Election as a REIT We have elected to be taxed as a REIT under the Code, and have operated as such beginning with our taxable year ended December 31, 2003. To qualify as a REIT, we must meet certain organizational and operational requirements, including a requirement to distribute at least 90% of our adjusted taxable income, as defined in the Code, to our stockholders, computed without regard to the dividends-paid deduction and by excluding our net capital gain. As a REIT, we generally will not be subject to federal income tax on income that we distribute to our stockholders. If we fail to qualify as a REIT in any taxable year, we will then be subject to federal income taxes on our taxable income for that year and for the four years following the year during which qualification is lost, unless the Internal Revenue Service grants us relief under certain statutory provisions. Such an event could materially affect our net income and net cash available for distribution to our stockholders. However, we believe that we are organized and operate in such a manner as to qualify for treatment as a REIT for federal income tax purposes. Page 36 Columbia Property Trust TRS, LLC, Columbia KCP TRS, LLC, and Columbia Energy TRS, LLC (collectively, the "TRS Entities") are wholly owned subsidiaries of Columbia Property Trust and are organized as Delaware limited liability companies. The TRS Entities, among other things, provide tenant services that Columbia Property Trust, as a REIT, cannot otherwise provide. We have elected to treat the TRS Entities as taxable REIT subsidiaries. We may perform certain additional, noncustomary services for tenants of our buildings through the TRS Entities; however, any earnings related to such services are subject to federal and state income taxes. In addition, for us to continue to qualify as a REIT, we must limit our investments in taxable REIT subsidiaries to 25% of the value of our total assets. Deferred tax assets and liabilities are established for temporary differences between the financial reporting basis and the tax basis of assets and liabilities at the enacted rates expected to be in effect when the temporary differences reverse. No provisions for federal income taxes have been made in our accompanying consolidated financial statements, other than the provisions relating to the TRS Entities, as we made distributions in excess of taxable income for the periods presented. We are subject to certain state and local taxes related to property operations in certain locations, which have been provided for in our accompanying consolidated financial statements. Inflation We are exposed to inflation risk, as income from long-term leases is the primary source of our cash flows from operations. There are provisions in the majority of our tenant leases that are intended to protect us from, and mitigate the risk of, the impact of inflation. These provisions include rent steps, reimbursement billings for operating expense pass-through charges, real estate tax and insurance reimbursements on a per-square-foot basis, or in some cases, annual reimbursement of operating expenses above a certain per-square-foot allowance. However, due to the long-term nature of the leases, the leases may not reset frequently enough to fully cover inflation. Application of Critical Accounting Policies Our accounting policies have been established to conform with GAAP. The preparation of financial statements in conformity with GAAP requires management to use judgment in the application of accounting policies, including making estimates and assumptions. These judgments affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the dates of the financial statements and the reported amounts of revenue and expenses during the reporting periods. If our judgment or interpretation of the facts and circumstances relating to various transactions had been different, it is possible that different accounting policies would have been applied, thus resulting in a different presentation of the financial statements. Additionally, other companies may utilize different estimates that may impact the comparability of our results of operations to those of companies in similar businesses. Investment in Real Estate Assets We are required to make subjective assessments as to the useful lives of our depreciable assets. To determine the appropriate useful life of an asset, we consider the period of future benefit of the asset. These assessments have a direct impact on net income. The estimated useful lives of our assets by class are as follows: Buildings Building and site improvements Tenant improvements Intangible lease assets 40-45 years 5-25 years Shorter of economic life or lease term Lease term Evaluating the Recoverability of Real Estate Assets We continually monitor events and changes in circumstances that could indicate that the carrying amounts of the real estate and related intangible assets of both operating properties and properties under construction, may not be recoverable. When indicators of potential impairment are present that suggest that the carrying amounts of real estate assets and related intangible assets (liabilities) may not be recoverable, we assess the recoverability of these assets by determining whether the respective carrying values will be recovered through the estimated undiscounted future operating cash flows expected from the use of the assets and their eventual disposition. In the event that such expected undiscounted future cash flows do not exceed the carrying values, we adjust the carrying value of the real estate assets and related intangible assets to the estimated fair values, pursuant to the property, plant, and equipment accounting standard for the impairment or disposal of long-lived assets, and recognize an impairment loss. Estimated fair values are calculated based on the following hierarchy of information, depending upon availability: (Level 1) recently quoted market prices; (Level 2) market prices for comparable properties; or (Level 3) the present value of future cash flows, including estimated residual value. Certain of our assets may be carried at an amount that exceeds that which could be realized in a current disposition Page 37 transaction. We have determined that there is no impairment in the carrying values of our real estate assets and related intangible assets for the year ended December 31, 2017. Projections of expected future operating cash flows require that we estimate future market rental income amounts subsequent to the expiration of current lease agreements, property operating expenses, the number of months it takes to re-lease the property, and the number of years the property is held for investment, among other factors. Due to the inherent subjectivity of the assumptions used to project future cash flows, estimated fair values may differ from the values that would be realized in market transactions. Allocation of Purchase Price of Acquired Assets Upon the acquisition of real properties, we allocate the purchase price of properties to tangible assets, consisting of land and building, site improvements, and identified intangible assets and liabilities, including the value of in-place leases, based in each case on our estimate of their fair values. The fair values of the tangible assets of an acquired property (which includes land and building) are determined by valuing the property as if it were vacant, and the "as-if-vacant" value is then allocated to land and building based on our determination of the relative fair value of these assets. We determine the as-if-vacant fair value of a property using methods similar to those used by independent appraisers. Factors we consider in performing these analyses include an estimate of carrying costs during the expected lease-up periods considering current market conditions and costs to execute similar leases, including leasing commissions and other related costs. In estimating carrying costs, we include real estate taxes, insurance, and other operating expenses during the expected lease-up periods based on current market demand. Intangible Assets and Liabilities Arising From In-Place Leases Where We Are the Lessor As further described below, in-place leases where we are the lessor may have values related to direct costs associated with obtaining a new tenant, opportunity costs associated with lost rentals that are avoided by acquiring an in-place lease, tenant relationships, and effective contractual rental rates that are above or below market rates: • • • Direct costs associated with obtaining a new tenant, including commissions, tenant improvements, and other direct costs, are estimated based on management's consideration of current market costs to execute a similar lease. Such direct costs are included in intangible lease origination costs in the accompanying consolidated balance sheets and are amortized to expense over the remaining terms of the respective leases. The value of opportunity costs associated with lost rentals avoided by acquiring an in-place lease is calculated based on the contractual amounts to be paid pursuant to the in-place leases over a market absorption period for a similar lease. Such opportunity costs are included in intangible lease assets in the accompanying consolidated balance sheets and are amortized to expense over the remaining terms of the respective leases. The value of effective rental rates of in-place leases that are above or below the market rates of comparable leases is calculated based on the present value (using a discount rate that reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be received pursuant to the in-place leases and (ii) management's estimate of fair market lease rates for the corresponding in-place leases. This calculation includes significantly below- market renewal options for which exercise of the renewal option appears to be reasonably assured. These intangible assets or liabilities are measured over the actual or assumed (in the case of renewal options) remaining lease terms. The capitalized above-market and below-market lease values are recorded as intangible lease assets or liabilities and amortized as an adjustment to rental income over the remaining terms of the respective leases. Evaluating the Recoverability of Intangible Assets and Liabilities The values of intangible lease assets and liabilities are determined based on assumptions made at the time of acquisition and have defined useful lives, which correspond with the lease terms. There may be instances in which intangible lease assets and liabilities become impaired, and we are required to write off the remaining asset or liability immediately or over a shorter period of time. Lease restructurings, including lease terminations and lease extensions, may impact the value and useful life of in-place leases. In-place leases that are terminated, partially terminated, or modified will be evaluated for impairment if the original in-place lease terms have been modified. In the event that the discounted cash flows of the original in-place lease stream do not exceed the discounted modified in-place lease stream, we adjust the carrying value of the intangible lease assets to the discounted cash flows and recognize an impairment loss. For in-place lease extensions that are executed more than one year prior to the original in- place lease expiration date, the useful life of the in-place lease will be extended over the new lease term with the exception of those in-place lease components, such as lease commissions and tenant allowances, which have been renegotiated for the extended term. Renegotiated in-place lease components, such as lease commissions and tenant allowances, will be amortized over the shorter of the useful life of the asset or the new lease term. Page 38 Intangible Assets and Liabilities Arising From In-Place Leases Where We Are the Lessee In-place ground leases where we are the lessee may have value associated with effective contractual rental rates that are above or below market rates. Such values are calculated based on the present value (using a discount rate that reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be paid pursuant to the in-place lease and (ii) management's estimate of fair market lease rates for the corresponding in-place lease at the time of execution or assumption. This calculation includes significantly below market renewal options for which exercise of the renewal option appears to be reasonably assured. These intangible assets and liabilities are measured over the actual or assumed (in the case of renewal options) remaining lease terms. The capitalized above-market and below-market in-place lease values are recorded as intangible lease liabilities and assets, respectively, and are amortized as an adjustment to property operating cost over the remaining term of the respective ground leases. Related-Party Transactions and Agreements During 2017, 2016, and 2015, we did not have any related party transactions, except as described in Note 4, Unconsolidated Joint Venture, of the accompanying consolidated financial statements. Commitments and Contingencies We are subject to certain commitments and contingencies with regard to certain transactions. Refer to Note 7, Commitments & Contingencies, to the accompanying consolidated financial statements for further explanation. Examples of such commitments and contingencies include: • • • • • guaranty of debt of an unconsolidated joint venture of $11.2 million; obligations under operating leases; obligations under capital leases; commitments under existing lease agreements; and litigation. Subsequent Events We have evaluated subsequent events in connection with the preparation of our consolidated financial statements and notes thereto included in this report on Form 10-K and noted the following items in addition to those disclosed elsewhere in this report: • • • On February 7, 2018, the board of directors declared dividends for the first quarter of 2018 in the amount of $0.20 per share, payable on March 15, 2018, to stockholders of record on March 1, 2018. On February 1, 2018, Columbia Property Trust sold an additional 22.5% interest in University Circle and 333 Market Street to its joint venture partner, Allianz, as described in Note 3, Real Estate Transactions, to the accompanying consolidated financial statements. On January 4, 2018, we paid an aggregate amount of $24.0 million in dividends for the fourth quarter of 2017 to shareholders of record on December 1, 2017. ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK As a result of our debt facilities, we are exposed to interest rate changes. Our interest rate risk management objectives are to limit the impact of interest rate changes on earnings and cash flow, primarily through a moderate level of overall borrowings. However, we currently have a substantial amount of debt outstanding. The majority of our borrowings are in the form of effectively fixed- rate financings, which helps to insulate our portfolio from interest rate risk. We closely monitor interest rates and will continue to consider the sources and terms of our borrowing facilities to determine whether we have appropriately guarded ourselves against the fluctuation of interest rates in future periods. Additionally, we have entered into interest rate swaps, and may enter into other interest rate swaps, caps, or other arrangements to mitigate our interest rate risk on a related financial instrument. We do not enter into derivative or interest rate transactions for speculative purposes; however, certain of our derivatives may not qualify for hedge accounting treatment. All of our debt was entered into for other-than-trading purposes. As of December 31, 2017 and 2016, the estimated fair value of our consolidated line of credit and notes payable and bonds was $1.7 billion and $1.4 billion, respectively. Page 39 Our financial instruments, including bonds payable, consist of both fixed- and variable-rate debt. As of December 31, 2017, adjusting for 51% of the debt at the Market Square Joint Venture, which we own through an unconsolidated joint venture, our debt consisted of the following, in thousands: 2018 2019 2020 2021 2022 Thereafter Total $ 300,000 $ 152,000 $ 300,000 $ — $ — $ — $ 752,000 $ 23,176 $ — $ — $ — $ 150,000 $ 864,265 $ 1,037,441 Maturing Debt: Effectively variable-rate debt Effectively fixed-rate debt(1) Average Interest Rate: Effectively variable-rate debt Effectively fixed-rate debt(1) 2.60% 5.80% 2.57% —% 2.66% —% —% —% —% 3.07% —% 4.12% 2.62% 4.04% (1) Fixed-rate debt and the related average interest rates exclude the $49.0 million mortgage note for 263 Shuman Boulevard, which matured in July 2017. We are in the process of working to transfer this property to the lender in settlement of the mortgage note. Interest is being accrued at the default rate of 10.55%. Our variable-rate borrowings consist of the Revolving Credit Facility, the $300 Million Bridge Loan, the $300 Million Term Loan, and the $150 Million Term Loan. However, only the Revolving Credit Facility, the $300 Million Bridge Loan, and the $300 Million Term Loan bear interest at effectively variable rates, as the variable rate on the $150 Million Term Loan has been effectively fixed through the interest rate swap agreement described herein. As of December 31, 2017, we had $152.0 million outstanding borrowings under the Revolving Credit Facility; $150.0 million outstanding on the $150 Million Term Loan; $300.0 million outstanding on the $300 Million Bridge Loan; $300.0 million outstanding on the $300 Million Term Loan; $348.9 million in 2026 Bonds Payable outstanding; $349.6 million in 2025 Bonds Payable outstanding; and $72.2 million outstanding on fixed-rate, term mortgage loans. The weighted-average interest rate of all of our consolidated debt instruments was 3.47% as of December 31, 2017. Approximately $920.7 million of our consolidated debt outstanding as of December 31, 2017, is subject to fixed rates, either directly or when coupled with an interest rate swap agreement. As of December 31, 2017, these balances incurred interest expense at an average interest rate of 4.17% and have expirations ranging from 2018 through 2026. A change in the market interest rate impacts the net financial instrument position of our fixed-rate debt portfolio; however, it has no impact on interest incurred or cash flows. A 1 percent change in interest rates would have a $7.5 million annual impact on our interest payments. The amounts outstanding on our variable-rate debt facilities in the future will largely depend upon future acquisition and disposition activity and other financing activities. Our Market Square Joint Venture holds a $325 million mortgage note, which bears interest at 5.07%. Adjusting for 51% of the debt at the Market Square Joint Venture, which we own through an unconsolidated joint venture, our weighted-average interest rate of all of our debt instruments, including our share of the Market Square mortgage note is 3.62%. We do not believe there is any exposure to increases in interest rates related to the capital lease obligations of $120.0 million at December 31, 2017, as the obligations are at fixed interest rates. ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA The financial statements and supplementary data filed as part of this report are set forth beginning on page F-1 of this report. ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE There were no disagreements with our independent registered public accountants during 2017, 2016, or 2015. ITEM 9A. CONTROLS AND PROCEDURES Management's Conclusions Regarding the Effectiveness of Disclosure Controls and Procedures We carried out an evaluation, under the supervision and with the participation of management, including the Principal Executive Officer and Principal Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures pursuant to Rule 13a-15(e) under the Exchange Act as of the end of the period covered by this report. Based upon that evaluation, Page 40 the Principal Executive Officer and Principal Financial Officer concluded that our disclosure controls and procedures were effective as of the end of the period covered by this report in providing a reasonable level of assurance that information we are required to disclose in reports that we file or submit under the Exchange Act is recorded, processed, summarized, and reported within the time periods in SEC rules and forms, including providing a reasonable level of assurance that information required to be disclosed by us in such reports is accumulated and communicated to our management, including our Principal Executive Officer and our Principal Financial Officer, as appropriate, to allow timely decisions regarding required disclosure. Report of Management on Internal Control Over Financial Reporting Our management is responsible for establishing and maintaining adequate internal control over financial reporting, as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act, as a process designed by, or under the supervision of, the Principal Executive Officer and Principal Financial Officer and effected by our management and other personnel to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with GAAP and includes those policies and procedures that: • • • pertain to the maintenance of records that in reasonable detail accurately and fairly reflect the transactions and disposition of our assets; provide reasonable assurance that the transactions are recorded as necessary to permit preparation of financial statements in accordance with GAAP, and that our receipts and expenditures are being made only in accordance with authorizations of management and/or members of the board of directors; and 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 the inherent limitations of internal control over financial reporting, including the possibility of human error and the circumvention or overriding of controls, material misstatements may not be prevented or detected on a timely basis. In addition, projections of any evaluation of effectiveness to future periods are subject to the risks that controls may become inadequate because of changes and conditions or that the degree of compliance with policies or procedures may deteriorate. Accordingly, even internal controls determined to be effective can provide only reasonable assurance that the information required to be disclosed in reports filed under the Exchange Act is recorded, processed, summarized, and represented within the time periods required. Our management has assessed the effectiveness of our internal control over financial reporting at December 31, 2017. To make this assessment, we used the criteria for effective internal control over financial reporting described in the Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on this assessment, our management believes that our system of internal control over financial reporting met those criteria, and therefore our management has concluded that we maintained effective internal control over financial reporting as of December 31, 2017. The report of the Company's independent registered public accounting firm on internal control over financial reporting for the Company is included in Part IV, Item 15, of this annual report on Form 10-K and is incorporated herein by reference. Changes in Internal Control Over Financial Reporting There have been no changes in our internal control over financial reporting during the quarter ended December 31, 2017, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting. Page 41 REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM To the shareholders and the Board of Directors of Columbia Property Trust, Inc.: Opinion on Internal Control over Financial Reporting We have audited the internal control over financial reporting of Columbia Property Trust, Inc. and subsidiaries (the “Company”) as of December 31, 2017, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2017, based on criteria established in Internal Control - Integrated Framework (2013) issued by COSO. We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated financial statements and financial statement schedule as of and for the year ended December 31, 2017, of the Company and our report dated February 15, 2018, expressed an unqualified opinion on those consolidated financial statements and financial statement schedule. Basis for Opinion The Company’s management is responsible 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 Report of Management on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB. We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion. Definition and Limitations of Internal Control over Financial Reporting 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 (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) 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 (3) 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/ Deloitte & Touche LLP Atlanta, Georgia February 15, 2018 Page 42 ITEM 9B. OTHER INFORMATION During the fourth quarter of 2017, there was no information that was required to be disclosed in a report on Form 8-K that was not disclosed in a report on Form 8-K. Page 43 PART III We will file a definitive Proxy Statement for our 2018 Annual Meeting of Stockholders (the "2018 Proxy Statement") with the SEC, pursuant to Regulation 14A, not later than 120 days after the end of our fiscal year. Accordingly, certain information required by Part III has been omitted under General Instruction G(3) to Form 10-K. Only those sections of the 2018 Proxy Statement that specifically address the items required to be set forth herein are incorporated by reference. ITEM 10. DIRECTORS, EXECUTIVE OFFICERS, AND CORPORATE GOVERNANCE We have adopted a Code of Ethics that applies to all of our executive officers and directors, including but not limited to, our principal executive officer and principal financial officer. Our Code of Ethics may be found at http://www.columbia.reit. Any amendments to, or waivers of, the Code of Ethics for our principal executive officer, principal financial officer, principal accounting officer, or controller or persons performing similar functions will be disclosed on our website promptly following the date of such amendment or waiver. The other information required by this Item is incorporated by reference from our 2018 Proxy Statement. ITEM 11. EXECUTIVE COMPENSATION The information required by this Item is incorporated by reference from our 2018 Proxy Statement. ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED SHAREHOLDER MATTERS See the table below for securities authorized to be issued under our equity compensation plan as of December 31, 2017. The other information required by this Item is incorporated by reference from our 2018 Proxy Statement. Plan Category Equity compensation plans approved by security holders Equity compensation plans not approved by security holders Total Number of Securities to Be Issued Upon Exercise of Outstanding Options, Warrants, and Rights Weighted-Average Exercise Price of Outstanding Options, Warrants, and Rights Common Stock Issued Under the LTIP Number of Securities Remaining Available for Future Issuance Under Equity Compensation Plans — $ — — $ — — — 1,293,931 — 1,293,931 3,506,069 — 3,506,069 ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE The information required by this Item is incorporated by reference from our 2018 Proxy Statement. ITEM 14. PRINCIPAL ACCOUNTANT FEES AND SERVICES The information required by this Item is incorporated by reference from our 2018 Proxy Statement. Page 44 PART IV ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES (a) 1. A list of the financial statements contained herein is set forth on page F-1 hereof. (a) 2. Schedule III - Real Estate Assets and Accumulated Depreciation Information with respect to this item begins on page S-1 hereof. Other schedules are omitted because of the absence of conditions under which they are required or because the required information is given in the financial statements or notes thereto. (a) 3. The Exhibits filed in response to Item 601 of Regulation S-K are listed on the Exhibit Index attached hereto. (b) (c) See (a) 3 above. See (a) 2 above. EXHIBIT INDEX TO 2017 FORM 10-K OF COLUMBIA PROPERTY TRUST, INC. The following documents are filed as exhibits to this report. Exhibits that are not required for this report are omitted. Ex. 3.1 3.2 3.3 3.4 3.5 3.6 3.7 4.1 4.2 4.3 4.4 4.5 4.6 10.1 10.2 10.3 10.4+ 10.5+ Description Second Amended and Restated Articles of Incorporation as Amended by the First Articles of Amendment (incorporated by reference to Exhibit 3.1 to the Company's Annual Report on Form 10-K filed with the Commission on March 1, 2013). Second Articles of Amendment (incorporated by reference to Exhibit 3.1 to the Company's Current Report on Form 8-K filed with the Commission on August 15, 2013). Third Articles of Amendment (incorporated by reference to Exhibit 3.2 to the Company's Current Report on Form 8-K filed with the Commission on August 15, 2013). Fourth Articles of Amendment (incorporated by reference to Exhibit 3.1 to the Company's Current Report on Form 8-K filed with the Commission on July 1, 2014). Fifth Articles of Amendment (incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K filed with the Commission on May 3, 2017). Articles Supplementary (incorporated by reference to Exhibit 3.1 to the Company's Current Report on Form 8-K filed with the Commission on September 4, 2013). Third Amended and Restated Bylaws (incorporated by reference to Exhibit 3.1 to the Company's Current Report on Form 8-K filed with the Commission on February 13, 2017). Statement regarding restrictions on transferability of shares of common stock (to appear on stock certificate or to be sent upon request and without charge to stockholders issued shares without certificates) (incorporated by reference to Exhibit 4.1 to the Company's Annual Report on Form 10-K filed with the Commission on March 1, 2013). Indenture, dated March 12, 2015 (incorporated by reference to Exhibit 4.1 to the Company's Current Report on Form 8-K filed with the Commission on March 12, 2015). Supplemental Indenture, dated March 12, 2015 (incorporated by reference to Exhibit 4.2 to the Company's Current Report on Form 8-K filed with the Commission on March 12, 2015). Form of 4.150% Senior Notes due 2025 (incorporated by reference to in Exhibit 4.3 to the Company's Current Report on Form 8-K filed with the Commission on March 12, 2015). Supplemental Indenture, dated August 12, 2016 (incorporated by reference to Exhibit 4.1 to the Company's Current Report on Form 8-K filed with the Commission on August 12, 2016). Form of 3.650% Senior Notes due 2026 (incorporated by reference to Exhibit 4.2 to the Company's Current Report on Form 8-K filed with the Commission on August 12, 2016). Amended and Restated Term Loan Agreement dated as of August 21, 2013, by and among Columbia Property Trust Operating Partnership, L.P., as Borrower; J.P. Morgan Securities LLC and PNC Capital Markets LLC, as Joint Lead Arrangers and Joint Bookrunners; JPMorgan Chase Bank, N.A., as Administrative Agent; PNC Bank, National Association, as Syndication Agent; and Regions Bank, U.S. Bank National Association, and Union Bank, N.A., as Documentation Agents (incorporated by reference to Exhibit 10.4 to the Company's Quarterly Report on Form 10-Q filed with the Commission on November 5, 2013). Supplemental Indenture dated as of February 3, 2012, among Wells Operating Partnership II, L.P., the Guarantors Party Hereto, and U.S. Bank National Association, as Trustee (incorporated by reference to Exhibit 10.3 to the Company's Quarterly Report on Form 10-Q filed with the Commission on May 4, 2012). Columbia Property Trust, Inc. Amended and Restated 2013 Long-Term Incentive Plan (incorporated by reference to Exhibit A to the Company's Proxy Statement for its 2017 Annual Meeting of Stockholders filed with the Commission on March 17, 2017). Form of Restricted Stock Award Agreement under the Columbia Property Trust, Inc. Long-Term Incentive Plan (incorporated by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K filed with the Commission on January 24, 2014). Columbia Property Trust Executive Change in Control Plan (incorporated by reference to Exhibit 10.1 to the Company's Current Report on From 8-K filed with the Commission on December 19, 2016). Page 45 Ex. 10.6*+ 10.7*+ 10.8 10.9 10.10 10.11 10.12 10.13 10.14 10.15 10.16 10.17 10.18* 12.1* 21.1* 23.1* 31.1* 31.2* 32.1* 101.INS 101.SCH 101.CAL 101.DEF 101.LAB 101.PRE Description Form of 2018 Restricted Stock Award (Time-Based) under the Columbia Property Trust Inc. Amended and Restated 2013 Long-Term Incentive Plan. Form of 2018 Restricted Stock Award (Performance-Based) under the Columbia Property Trust Inc. Amended and Restated 2013 Long- Term Incentive Plan. Amended and Restated Credit Agreement dated as of August 21, 2013, by and among Columbia Property Trust Operating Partnership, L.P., as Borrower; J.P. Morgan Securities LLC and PNC Capital Markets LLC, as Joint Lead Arrangers and Joint Bookrunners; JPMorgan Chase Bank, N.A., as Administrative Agent; PNC Bank, National Association, as Syndication Agent; and Regions Bank, U.S. Bank National Association, and BMO Capital Market Financing, Inc., as Documentation Agents (incorporated by reference to Exhibit 10.3 to the Company's Quarterly Report on Form 10-Q filed with the Commission on November 5, 2013). Investor Services Agreement between the Company and Wells Real Estate Funds, Inc. dated February 28, 2013, and effective as of March 1, 2013 (incorporated by reference to Exhibit 10.3 to the Company's Quarterly Report on Form 10-Q filed with the Commission on May 8, 2013). Consulting Services Agreement between the Company and Wells Real Estate Funds, Inc. dated February 28, 2013, and effective as of March 1, 2013 (incorporated by reference to Exhibit 10.4 to the Company's Quarterly Report on Form 10-Q filed with the Commission on May 8, 2013). Assignment and Assumption Agreement between Wells Real Estate Funds, Inc. to Wells Operating Partnership II, L.P., dated as of February 28, 2013 (related to Wells Real Estate Advisory Services II, LLC) (incorporated by reference to Exhibit 10.5 to the Company's Quarterly Report on Form 10-Q filed with the Commission on May 8, 2013). Assignment and Assumption Agreement between Wells Real Estate Funds, Inc. to Wells Operating Partnership II, L.P. dated as of February 28, 2013 (related to Wells Real Estate Services, LLC) (incorporated by reference to Exhibit 10.6 to the Company's Quarterly Report on Form 10-Q filed with the Commission on May 8, 2013). Term Loan Agreement dated as of January 6, 2015, by and among the Columbia Property Trust Operating Partnership, L.P. as borrower; J.P. Morgan Securities LLC, as sole lead arranger and sole bookrunner; JPMorgan Chase Bank, N.A., as administrative agent; PNC Bank, National Association, as syndication agent; Morgan Stanley Bank, N.A., U.S. Bank National Association and Wells Fargo Bank, National Association, as documentation agents; and each of the financial institutions a signatory thereto, as lenders (incorporated by reference to Exhibit 10.1 to the Company's Annual Report on Form 10-K filed with the Commission on February 12, 2015). Amended and Restated Revolving Credit and Term Loan Agreement, dated July 30, 2015, by and among Columbia Property Trust Operating Partnership, L.P., as borrower; J.P. Morgan Securities LLC and PNC Capital Markets LLC, as joint lead arrangers and joint bookrunners; JPMorgan Chase Bank, N.A., as administrative agent; PNC Bank, National Association, as syndication agent; and Regions Bank, U.S. Bank National Association, MUFG Union Bank, N.A. and Wells Fargo Bank, N.A., as documentation agents, and each of the financial institutions a signatory thereto, as lenders (incorporated by reference to Exhibit 10.1 to the Company's Quarterly Report on Form 10-Q filed with the Commission on October 29, 2015). Term Loan Agreement, dated July 30, 2015, by and among Columbia Property Trust Operating Partnership, L.P., as borrower; the financial institutions party thereto, as lenders; Wells Fargo Bank, National Association, as administrative agent; Wells Fargo Securities, LLC, Regions Capital Markets and U.S. Bank National Association, as joint lead arrangers and joint bookrunners; Regions Bank and U.S. National Association, as syndication agents; and PNC Bank, National Association, as documentation agent (incorporated by reference to Exhibit 10.2 to the Company's Quarterly Report on Form 10-Q filed with the Commission on October 29, 2015). First Amendment to $150 Million Term Loan Agreement, dated as of July 25, 2017, by and among Columbia Property Trust Operating Partnership, L.P., as borrower; the financial institutions party thereto, as lenders; Wells Fargo Bank, National Association, as administrative agent; Wells Fargo Securities, LLC, Regions Capital Markets and U.S. Bank National Association, as joint lead arrangers and joint bookrunners; Regions Bank and U.S. National Association, as syndication agents; and PNC Bank, National Association, as documentation agent (incorporated by reference to Exhibit 10.2 to the Company's Quarterly Report on Form 10-Q filed with the Commission on October 26, 2017). Term Loan Agreement, dated August 4, 2015, by and among the Columbia Property Trust Operating Partnership, L.P., as borrower; J.P. Morgan Securities LLC, as joint lead arranger and sole bookrunner; JPMorgan Chase Bank, N.A., as administrative agent; PNC Bank, National Association, Capital One, National Association, and Wells Fargo Bank, N.A. as joint lead arrangers and co-syndication agents; and each of the financial institutions a signatory thereto, as lenders (incorporated by reference to Exhibit 10.3 to the Company's Quarterly Report on Form 10-Q filed with the Commission on October 29, 2015). Term Loan Agreement dated as of November 27, 2017, by and among Columbia Property Trust Operating Partnership, L.P., as borrower; JPMorgan Chase Bank, N.A., as joint lead arranger and sole bookrunner; PNC Capital Markets LLC, Regions Capital Markets, SunTrust Robinson Humphrey, Inc., U.S. Bank National Association, and Wells Fargo Securities LLC, as joint lead arrangers; JPMorgan Chase Bank, N.A., as administrative agent; PNC Bank, National Association, Regions Bank, SunTrust Bank, U.S. Bank National Association and Wells Fargo Bank, National Association as documentation agents; and each of the financial institutions a signatory thereto, as lenders. Calculation of Earnings to Fixed Charges. Subsidiaries of Columbia Property Trust, Inc. Consent of Deloitte & Touche LLP. Certification of the Principal Executive Officer of the Company, pursuant to Securities Exchange Act Rules 13a-14(a) as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. Certification of the Principal Financial Officer of the Company, pursuant to Securities Exchange Act Rules 13a-14(a) as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. Certification of the Principal Executive Officer and Principal Financial Officer of the Company, pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. XBRL Instance Document. XBRL Taxonomy Extension Schema. XBRL Taxonomy Extension Calculation Linkbase. XBRL Taxonomy Extension Definition Linkbase. XBRL Taxonomy Extension Label Linkbase. XBRL Taxonomy Extension Presentation Linkbase. Page 46 Ex. Description * Filed herewith. + Identifies each management contract or compensatory plan required to be filed. Page 47 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 COLUMBIA PROPERTY TRUST, INC. (Registrant) Dated: February 15, 2018 By: /s/ James A. Fleming JAMES A. FLEMING Executive Vice President and Chief Financial Officer (Principal Financial Officer) Dated: February 15, 2018 /s/ Wendy W. Gill WENDY W. GILL Principal Accounting Officer 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 capacity as and on the date indicated. Signature Title /s/ Carmen M. Bowser Independent Director Carmen M. Bowser /s/ Charles R. Brown Charles R. Brown Independent Director /s/ Richard W. Carpenter Independent Director Richard W. Carpenter /s/ John L. Dixon John L. Dixon /s/ David B. Henry David B. Henry /s/ Murray J. McCabe Murray J. McCabe /s/ E. Nelson Mills E. Nelson Mills Independent Director Independent Director Independent Director President, Chief Executive Officer and Director (Principal Executive Officer) /s/ Constance B. Moore Independent Director Constance B. Moore /s/ Michael S. Robb Michael S. Robb /s/ George W. Sands George W. Sands Independent Director Independent Director /s/ Thomas G. Wattles Independent Director Thomas G. Wattles Date February 15, 2018 February 15, 2018 February 15, 2018 February 15, 2018 February 15, 2018 February 15, 2018 February 15, 2018 February 15, 2018 February 15, 2018 February 15, 2018 February 15, 2018 Page 48 INDEX TO CONSOLIDATED FINANCIAL STATEMENTS Financial Statements Report of Independent Registered Public Accounting Firm Consolidated Balance Sheets as of December 31, 2017 and 2016 Consolidated Statements of Operations for the Years Ended December 31, 2017, 2016, and 2015(cid:2) Consolidated Statements of Comprehensive Income for the Years Ended December 31, 2017, 2016, and 2015(cid:2) Consolidated Statements of Equity for the Years Ended December 31, 2017, 2016, and 2015 Consolidated Statements of Cash Flows for the Years Ended December 31, 2017, 2016, and 2015 Notes to Consolidated Financial Statements Page F-2 F-3 F-4 F-5 F-6 F-7 F-8 F-1 REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM To the shareholders and the Board of Directors of Columbia Property Trust, Inc.: Opinion on the Financial Statements We have audited the accompanying consolidated balance sheets of Columbia Property Trust, Inc. and subsidiaries (the "Company") as of December 31, 2017 and 2016, the related consolidated statements of operations, comprehensive income, equity, and cash flows, for each of the three years in the period ended December 31, 2017, and the related notes and the schedule listed in the Index at Item 15(a)(2) (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2017 and 2016, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2017, in conformity with accounting principles generally accepted in the United States of America. We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company's internal control over financial reporting as of December 31, 2017, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February 15, 2018, expressed an unqualified opinion on the Company's internal control over financial reporting. Basis for Opinion These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the Company's financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB. We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion. /s/ Deloitte & Touche LLP Atlanta, Georgia February 15, 2018 We have served as the Company's auditor since 2008. F-2 COLUMBIA PROPERTY TRUST, INC. CONSOLIDATED BALANCE SHEETS (in thousands, except share and per-share amounts) Assets: Real Estate Assets, at Cost: Land December 31, 2017 2016 $ 825,208 $ 751,351 Buildings and improvements, less accumulated depreciation of $388,796 and $435,457, as of December 31, 2017 and 2016, respectively 2,063,419 2,121,150 Intangible lease assets, less accumulated amortization of $94,065 and $112,777, as of December 31, 2017 and 2016, respectively Construction in progress Real estate assets held for sale, less accumulated depreciation and amortization of $180,791 as of December 31, 2016 Total real estate assets Investment in unconsolidated joint ventures Cash and cash equivalents Tenant receivables, net of allowance for doubtful accounts of $0 and $31 as of December 31, 2017 and 2016, respectively Straight-line rent receivable Prepaid expenses and other assets Intangible lease origination costs, less accumulated amortization of $57,465 and $74,578, as of December 31, 2017 and 2016, respectively Deferred lease costs, less accumulated amortization of $26,464 and $22,753, as of December 31, 2017 and 2016, respectively Investment in development authority bonds Other assets held for sale, less accumulated amortization of $34,152 as of December 31, 2016 Total assets Liabilities: Line of credit and notes payable, net of deferred financing costs of $2,991 and $3,136, as of December 31, 2017 and 2016, respectively Bonds payable, net of discount of $1,484 and $1,664 and deferred financing costs of $4,760 and $5,364, as of December 31, 2017 and 2016, respectively Accounts payable, accrued expenses, and accrued capital expenditures Dividends payable Deferred income Intangible lease liabilities, less accumulated amortization of $19,660 and $44,564, as of December 31, 2017 and 2016, respectively Obligations under capital leases Liabilities held for sale, less accumulated amortization of $1,239 as of December 31, 2016 Total liabilities Commitments and Contingencies (Note 7) Equity: Common stock, $0.01 par value, 225,000,000 shares authorized, 119,789,106 and 122,184,193 shares issued and outstanding as of December 31, 2017 and 2016, respectively Additional paid-in capital Cumulative distributions in excess of earnings Accumulated other comprehensive income (loss) Total equity Total liabilities and equity 199,260 44,742 — 3,132,629 943,242 9,567 2,128 92,235 27,683 42,959 141,096 120,000 — 193,311 36,188 412,506 3,514,506 127,346 216,085 7,163 64,811 24,275 54,279 125,799 120,000 45,529 $ $ 4,511,539 $ 4,299,793 971,185 $ 721,466 693,756 125,002 23,961 18,481 27,218 120,000 — 692,972 131,028 36,727 19,694 33,375 120,000 41,763 1,979,603 1,797,025 — — 1,198 4,487,071 (1,957,236) 903 2,531,936 $ 4,511,539 $ 1,221 4,538,912 (2,036,482) (883) 2,502,768 4,299,793 See accompanying notes. F-3 COLUMBIA PROPERTY TRUST, INC. CONSOLIDATED STATEMENTS OF OPERATIONS (in thousands, except per-share amounts) Revenues: Rental income Tenant reimbursements Hotel income Asset and property management fee income Other property income Expenses: Property operating costs Hotel operating costs Asset and property management fee expenses Depreciation Amortization General and administrative – corporate General and administrative – unconsolidated joint ventures Acquisition expenses Other Income (Expense): Interest expense Interest and other income Loss on interest rate swaps Loss on the early extinguishment of debt Income (loss) before income tax, unconsolidated joint ventures, and gains on sales of real estate assets Income tax benefit (expense) Income (loss) from unconsolidated joint ventures Income before gains on sales of real estate assets Gains on sales of real estate assets Net income Per-Share Information – Basic: Net income Weighted-average common shares outstanding – basic Per-Share Information – Diluted: Net income Weighted-average common shares outstanding – diluted Years Ended December 31, 2017 2016 2015 $ 257,059 $ 366,186 $ 436,048 23,511 1,339 3,782 3,309 69,770 22,661 2,122 12,804 99,655 24,309 605 5,448 289,000 473,543 566,065 87,805 2,089 918 80,394 32,403 34,966 1,454 — 240,029 48,971 154,968 18,686 1,415 108,543 56,775 33,876 — — 374,263 99,280 (60,516) (67,609) 9,529 — (325) (51,312) (2,341) 213 2,651 523 175,518 176,041 1.45 120,795 $ $ 7,288 — (18,997) (79,318) 19,962 (445) (7,561) 11,956 72,325 84,281 0.68 123,130 $ $ 1.45 $ 0.68 $ 121,159 123,228 188,078 19,615 1,816 131,490 87,128 29,683 — 3,675 461,485 104,580 (85,296) 7,254 (1,110) (3,149) (82,301) 22,279 (378) (1,142) 20,759 23,860 44,619 0.36 124,757 0.36 124,847 $ $ $ See accompanying notes. F-4 COLUMBIA PROPERTY TRUST, INC. CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (in thousands) Net income Market value adjustment to interest rate swap Settlement of interest rate swap Comprehensive income Years Ended December 31, 2017 2016 2015 $ $ 176,041 $ 84,281 $ 1,786 — 1,553 — 177,827 $ 85,834 $ 44,619 (1,570) 1,102 44,151 See accompanying notes. F-5 ) 5 3 3 6 1 ( , 4 2 8 2 , ) 4 2 9 9 4 1 ( , 9 1 6 4 4 , ) 0 7 5 1 ( , 2 0 1 1 , , 8 7 4 3 3 7 2 , l a t o T , 4 9 1 4 1 6 2 , ) 1 0 8 2 5 ( , 8 8 3 3 , ) 7 4 8 7 4 1 ( , 1 8 2 4 8 , 3 5 5 1 , ) 8 2 6 7 5 ( , 8 6 7 2 0 5 , , 2 4 6 7 5 , ) 5 9 7 6 9 ( , 1 4 0 6 7 1 , 6 8 7 1 , , 6 3 9 1 3 5 2 , $ ) 8 6 9 1 ( , $ e v i s n e h e r p m o C ) s s o L ( e m o c n I — — — — ) 0 7 5 1 ( , 2 0 1 1 , ) 6 3 4 , 2 ( — — — — ) 3 8 8 ( 3 5 5 1 , — — — — $ 3 0 9 6 8 7 1 , $ d e t a l u m u c c A r e h t O e v i t a l u m u C s n o i t u b i r t s i D f o s s e c x E n i i s g n n r a E y t i u q E l a n o i t i d d A n I - d i a P l a t i p a C k c o t S n o m m o C t n u o m A s e r a h S . C N I , T S U R T Y T R E P O R P A I B M U L O C Y T I U Q E F O S T N E M E T A T S D E T A D I L O S N O C ) s t n u o m a e r a h s - r e p t p e c x e , s d n a s u o h t n i ( , ) 1 1 6 7 6 8 1 ( , $ 8 0 8 , 1 0 6 , 4 $ 9 4 2 , 1 $ 3 7 9 , 4 2 1 — — — — ) 4 2 9 9 4 1 ( , 9 1 6 4 4 , — — — — ) 8 2 3 , 6 1 ( 3 2 8 , 2 ) 7 ( 1 — — — — , ) 6 1 9 2 7 9 1 ( , — — ) 7 4 8 7 4 1 ( , — 1 8 2 4 8 , , ) 2 8 4 6 3 0 2 ( , — — — ) 5 9 7 6 9 ( , 1 4 0 6 7 1 , ) 7 7 7 , 2 5 ( 3 0 3 , 8 8 5 , 4 ) 4 2 ( 3 4 2 , 1 — — — 6 8 3 , 3 2 — — — ) 2 0 6 , 7 5 ( 2 1 9 , 8 3 5 , 4 ) 6 2 ( 1 2 2 , 1 — — — 1 6 7 , 5 3 — — — ) 1 2 7 ( 1 1 1 — — — — ) 9 9 3 , 2 ( 3 6 3 , 4 2 1 0 2 2 — — — ) 2 8 6 , 2 ( 4 8 1 , 2 2 1 7 8 2 — — — d e z i t r o m a d n a , s r o t c e r i d d n a s e e y o l p m e o t d e u s s i k c o t s n o m m o C ) s g n i d l o h t i w x a t e m o c n i f o t e n ( ) e r a h s r e p 0 2 . 1 $ ( s r e d l o h k c o t s n o m m o c o t s n o i t u b i r t s i D p a w s e t a r t s e r e t n i o t t n e m t s u j d a e u l a v t e k r a M e m o c n i t e N k c o t s n o m m o c f o s e s a h c r u p e R 4 1 0 2 , 1 3 r e b m e c e D , e c n a l a B p a w s e t a r t s e r e t n i f o t n e m e l t t e S k c o t s n o m m o c f o s e s a h c r u p e R 5 1 0 2 , 1 3 r e b m e c e D , e c n a l a B d e z i t r o m a d n a , s r o t c e r i d d n a s e e y o l p m e o t d e u s s i k c o t s n o m m o C ) s g n i d l o h t i w x a t e m o c n i f o t e n ( F-6 ) e r a h s r e p 0 2 . 1 $ ( s r e d l o h k c o t s n o m m o c o t s n o i t u b i r t s i D p a w s e t a r t s e r e t n i o t t n e m t s u j d a e u l a v t e k r a M e m o c n i t e N k c o t s n o m m o c f o s e s a h c r u p e R 6 1 0 2 , 1 3 r e b m e c e D , e c n a l a B d n a , s r o t c e r i d d n a s e e y o l p m e o t d e u s s i k c o t s n o m m o C ) s g n i d l o h t i w x a t e m o c n i f o t e n ( d e z i t r o m a ) e r a h s r e p 0 8 . 0 $ ( s r e d l o h k c o t s n o m m o c o t s n o i t u b i r t s i D p a w s e t a r t s e r e t n i o t t n e m t s u j d a e u l a v t e k r a M e m o c n i t e N , ) 6 3 2 7 5 9 1 ( , . s e t o n g n i y n a p m o c c a e e S $ 1 7 0 , 7 8 4 , 4 $ 8 9 1 , 1 $ 9 8 7 , 9 1 1 7 1 0 2 , 1 3 r e b m e c e D , e c n a l a B COLUMBIA PROPERTY TRUST, INC. CONSOLIDATED STATEMENTS OF CASH FLOWS (in thousands) Cash Flows from Operating Activities: Net income Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities: Straight-line rental income Depreciation Amortization Noncash interest expense Loss on early extinguishment of debt Gain on interest rate swaps Gains on sales of real estate assets Loss (income) from unconsolidated joint ventures Distributions of earnings from unconsolidated joint ventures Stock-based compensation expense Changes in Assets and Liabilities, Net of Acquisitions and Dispositions: Decrease (increase) in tenant receivables, net Decrease (increase) in prepaid expenses and other assets Increase (decrease) in accounts payable and accrued expenses Increase (decrease) in deferred income Net cash provided by operating activities Cash Flows From Investing Activities: Net proceeds from the sale of real estate Real estate acquisitions Deposits Capital improvements and development costs Deferred lease costs paid Investments in unconsolidated joint ventures Distributions in excess of earnings from unconsolidated joint ventures Years Ended December 31, 2017 2016 2015 $ 176,041 $ 84,281 $ 44,619 (32,737) 80,394 31,907 3,009 325 — (175,518) (2,651) 3,681 7,580 4,222 (1,754) (28,133) (4,442) 61,924 737,631 (604,769) — (86,805) (26,722) (369,043) 1,985 (21,875) 108,543 52,530 3,549 18,997 — (72,325) 7,561 — 4,558 4,251 5,533 (1,607) (905) (16,632) 131,490 78,000 4,335 3,149 (1,532) (23,860) 1,142 — 3,548 (4,414) (2,155) 3,330 2,060 193,091 223,080 603,732 596,734 — (1,062,031) 10,000 (39,521) (32,386) (16,212) — — (83,371) (22,531) (5,500) — Net cash provided by (used in) investing activities (347,723) 525,613 (576,699) Cash Flows From Financing Activities: Financing costs paid Prepayments to settle debt and interest rate swap Proceeds from lines of credit and notes payable Repayments of lines of credit and notes payable Proceeds from issuance of bonds payable Repayment of bonds payable Distributions paid to stockholders Redemptions of common stock Net cash provided by (used in) financing activities Net increase (decrease) in cash and cash equivalents Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period See accompanying notes. F-7 (1,269) — 783,000 (533,427) — — (109,561) (59,462) 79,281 (206,518) 216,085 (3,114) (17,921) 435,000 (9,729) (3,165) 1,884,000 (845,460) (1,854,512) 348,691 (250,000) (148,474) (53,986) (535,264) 183,440 32,645 349,507 — (112,570) (17,057) 236,474 (117,145) 149,790 32,645 $ 9,567 $ 216,085 $ COLUMBIA PROPERTY TRUST, INC. NOTES TO CONSOLIDATED FINANCIAL STATEMENTS DECEMBER 31, 2017, 2016, AND 2015 1. Organization Columbia Property Trust, Inc. ("Columbia Property Trust") (NYSE: CXP) is a Maryland corporation that operates as a real estate investment trust ("REIT") for federal income tax purposes and owns and operates commercial real estate properties. Columbia Property Trust was incorporated in 2003, commenced operations in 2004, and conducts business primarily through Columbia Property Trust Operating Partnership, L.P. ("Columbia Property Trust OP"), a Delaware limited partnership. Columbia Property Trust is the general partner and sole owner of Columbia Property Trust OP and possesses full legal control and authority over its operations. Columbia Property Trust OP acquires, redevelops, owns, leases, and operates real properties directly, through wholly owned subsidiaries, or through unconsolidated joint ventures. Unless otherwise noted, references to Columbia Property Trust, "we," "us," or "our" herein shall include Columbia Property Trust and all subsidiaries of Columbia Property Trust, direct and indirect. Columbia Property Trust typically invests in high-quality, income-generating office properties. As of December 31, 2017, Columbia Property Trust owned 19 operating properties, of which 14 were wholly owned and five were owned through unconsolidated joint ventures. These properties are located primarily in New York, San Francisco, Washington, D.C., and Atlanta, contain a total of 9.2 million rentable square feet, and were approximately 96.2% leased as of December 31, 2017. 2. Summary of Significant Accounting Policies Basis of Presentation The consolidated financial statements of Columbia Property Trust have been prepared in accordance with U.S. generally accepted accounting principles ("GAAP") and include the accounts of Columbia Property Trust, Columbia Property Trust OP, and any variable interest entity ("VIE") in which Columbia Property Trust or Columbia Property Trust OP was deemed the primary beneficiary. With respect to entities that are not VIEs, Columbia Property Trust's consolidated financial statements shall also include the accounts of any entity in which Columbia Property Trust, Columbia Property Trust OP, or its subsidiaries own a controlling financial interest and any limited partnership in which Columbia Property Trust, Columbia Property Trust OP, or its subsidiaries own a controlling general partnership interest. In determining whether Columbia Property Trust or Columbia Property Trust OP has a controlling interest, the following factors are considered, among other things: the ownership of voting interests, protective rights, and participatory rights of the investors. All intercompany balances and transactions have been eliminated in consolidation. Use of Estimates The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the accompanying consolidated financial statements and the accompanying notes. Actual results could differ from those estimates. Fair Value Measurements Columbia Property Trust estimates the fair value of its assets and liabilities (where currently required under GAAP) consistent with the provisions of Accounting Standard Codification 820, Fair Value Measurements ("ASC 820"). Under this standard, fair value is defined as the price that would be received upon sale of an asset or paid upon transfer of a liability in an orderly transaction between market participants at the measurement date. While various techniques and assumptions can be used to estimate fair value depending on the nature of the asset or liability, the accounting standard for fair value measurements and disclosures provides the following fair value technique parameters and hierarchy, depending upon availability: Level 1 – Assets or liabilities for which the identical term is traded on an active exchange, such as publicly traded instruments or futures contracts. Level 2 – Assets and liabilities valued based on observable market data for similar instruments. Level 3 – Assets or liabilities for which significant valuation assumptions are not readily observable in the market. Such assets or liabilities are valued based on the best available data, some of which may be internally developed. Significant assumptions may include risk premiums that a market participant would consider. F-8 Real Estate Assets Real estate assets are stated at cost, less accumulated depreciation and amortization. Amounts capitalized to real estate assets consist of the cost of acquisition or construction, and any tenant improvements or major improvements and betterments that extend the useful life of the related asset. All repairs and maintenance are expensed as incurred. Additionally, Columbia Property Trust capitalizes interest while the development of a real estate asset is in progress. During the years ended December 31, 2017 and 2016, $0.7 million and $0.3 million of interest was capitalized, respectively. Columbia Property Trust is required to make subjective assessments as to the useful lives of its depreciable assets. To determine the appropriate useful life of an asset, Columbia Property Trust considers the period of future benefit of the asset. These assessments have a direct impact on net income. The estimated useful lives of its assets by class are as follows: Buildings Building and site improvements Tenant improvements Intangible lease assets 40-45 years 5-25 years Shorter of economic life or lease term Lease term Evaluating the Recoverability of Real Estate Assets Columbia Property Trust continually monitors events and changes in circumstances that could indicate that the carrying amounts of its real estate and related intangible assets, of both operating properties and properties under construction, may not be recoverable. When indicators of potential impairment are present that suggest that the carrying amounts of real estate assets and related intangible assets (liabilities) may not be recoverable, Columbia Property Trust assesses the recoverability of these assets by determining whether the respective carrying values will be recovered through the estimated undiscounted future operating cash flows expected from the use of the assets and their eventual disposition. In the event that such expected undiscounted future cash flows do not exceed the carrying values, Columbia Property Trust adjusts the carrying value of the real estate assets and related intangible assets to the estimated fair values, pursuant to the property, plant, and equipment accounting standard for the impairment or disposal of long-lived assets, and recognizes an impairment loss. Estimated fair values are calculated based on the following hierarchy of information: (Level 1) recently quoted market prices, (Level 2) market prices for comparable properties, or (Level 3) the present value of future cash flows, including estimated residual value. Certain of Columbia Property Trust's assets may be carried at an amount that exceeds that which could be realized in a current disposition transaction. Columbia Property Trust has determined that the carrying values of its real estate assets and related intangible assets are recoverable as of December 31, 2017. Projections of expected future operating cash flows require that Columbia Property Trust estimates future market rental income amounts subsequent to the expiration of current lease agreements, property operating expenses, the number of months it takes to re-lease the property, and the number of years the property is held for investment, among other factors. Due to the inherent subjectivity of the assumptions used to project future cash flows, estimated fair values may differ from the values that would be realized in market transactions. Assets Held for Sale Columbia Property Trust classifies properties as held for sale according to Accounting Standard Codification 360, Accounting for the Impairment or Disposal of Long-Lived Assets ("ASC 360"). According to ASC 360, properties, having separately identifiable operations and cash flows, are considered held for sale when the following criteria are met: • Management, having the authority to approve the action, commits to a plan to sell the property. • The property is available for immediate sale in its present condition subject only to terms that are usual and customary for sales of such property. An active program to locate a buyer and other actions required to complete the plan to sell the property have been initiated. The property is being actively marketed for sale at a price that is reasonable in relation to its current fair value. Actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn. The sale of the property is probable (i.e. typically subject to a binding sale contract with a non-refundable deposit), and transfer of the property is expected to qualify for recognition as a completed sale, within one year. • • • • At such time that a property is determined to be held for sale, its carrying amount is adjusted to the lower of its depreciated book value or its estimated fair value, less costs to sell, and depreciation is no longer recognized; and assets and liabilities are required F-9 to be classified as held for sale on the accompanying consolidated balance sheet. As of December 31, 2017, none of Columbia Property Trust's properties met the criteria to be classified as held for sale in the accompanying consolidated balance sheet. As of December 31, 2016, Key Center Tower, Key Center Marriott, 5 Houston Center, Energy Center I, and 515 Post Oak were subject to binding sale contracts and met the other aforementioned criteria; thus, these properties are classified as held for sale in the accompanying consolidated balance sheet as of that date. The sale of 5 Houston Center, Energy Center I, and 515 Post Oak closed on January 6, 2017, and the sale of Key Center Tower and Key Center Marriott closed on January 31, 2017 (see Note 3, Real Estate Transactions). The major classes of assets and liabilities classified as held for sale as of December 31, 2016, are provided below (in thousands): December 31, 2016 Real Estate Assets Held for Sale: Real Estate Assets, at Cost: Land Buildings and improvements, less accumulated depreciation of $152,246 Intangible lease assets, less accumulated amortization of $28,545 Construction in progress Total real estate assets held for sale, net Other Assets Held for Sale: Tenant receivables, net of allowance for doubtful accounts Straight-line rent receivable Prepaid expenses and other assets Intangible lease origination costs, less accumulated amortization of $22,949 Deferred lease costs, less accumulated amortization of $11,203 Total other assets held for sale, net Liabilities Held for Sale: Accounts payable, accrued expenses, and accrued capital expenditures Deferred income Intangible lease liabilities, less accumulated amortization of $1,239 Total liabilities held for sale, net Allocation of Purchase Price of Acquired Assets $ $ $ $ $ $ 30,243 366,126 13,365 2,772 412,506 1,722 20,221 3,184 1,815 18,587 45,529 34,812 4,214 2,737 41,763 Upon the acquisition of real properties, Columbia Property Trust allocates the purchase price of properties to tangible assets, consisting of land, building, site improvements, and identified intangible assets and liabilities, including the value of in-place leases, based in each case on Columbia Property Trust's estimate of their fair values in accordance with ASC 820 (see Fair Value Measurements section above for additional details). Columbia Property Trust adopted ASU 2017-01, as described in the Recent Accounting Pronouncements section below, effective October 1, 2017. As a result, transaction costs for properties acquired in the fourth quarter have been capitalized and included in the purchase price allocated for properties acquired in the period. Prior to October 1, 2017, transaction costs were expensed and included in acquisition expense on the accompanying statements of operations. The fair values of the tangible assets of an acquired property (which includes land, building, and site improvements) are determined by valuing the property as if it were vacant, and the "as-if-vacant" value is then allocated to land, building, and site improvements based on management's determination of the relative fair value of these assets. Management determines the as-if-vacant fair value of a property using methods similar to those used by independent appraisers. Factors considered by management in performing these analyses include an estimate of carrying costs during the expected lease-up periods considering current market conditions and costs to execute similar leases, including leasing commissions and other related costs. In estimating carrying costs, management includes real estate taxes, insurance, and other operating expenses during the expected lease-up periods based on current market demand. Intangible Assets and Liabilities Arising From In-Place Leases Where Columbia Property Trust Is the Lessor As further described below, in-place leases with Columbia Property Trust as the lessor may have values related to: direct costs associated with obtaining a new tenant, opportunity costs associated with lost rentals that are avoided by acquiring an in-place lease, tenant relationships, and effective contractual rental rates that are above or below market rates: F-10 • • • Direct costs associated with obtaining a new tenant, including commissions, tenant improvements, and other direct costs, are estimated based on management's consideration of current market costs to execute a similar lease. Such direct costs are included in intangible lease origination costs in the accompanying consolidated balance sheets and are amortized to expense over the remaining terms of the respective leases. The value of opportunity costs associated with lost rentals avoided by acquiring an in-place lease is calculated based on contractual amounts to be paid pursuant to the in-place leases over a market absorption period for a similar lease. Such opportunity costs ("Absorption Period Costs") are included in intangible lease assets in the accompanying consolidated balance sheets and are amortized to expense over the remaining terms of the respective leases. The value of effective rental rates of in-place leases that are above or below the market rates of comparable leases is calculated based on the present value (using a discount rate that reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be received pursuant to the in-place leases and (ii) management's estimate of fair market lease rates for the corresponding in-place leases. This calculation includes significantly below- market renewal options for which exercise of the renewal option appears to be reasonably assured. These intangible assets or liabilities are measured over the actual or assumed (in the case of renewal options) remaining lease terms. The capitalized above-market and below-market lease values are recorded as intangible lease assets or liabilities and amortized as an adjustment to rental income over the remaining terms of the respective leases. As of December 31, 2017 and 2016, Columbia Property Trust had the following gross intangible in-place lease assets and liabilities, excluding amounts held for sale (in thousands): December 31, 2017 Gross Accumulated Amortization December 31, 2016 Net Gross Accumulated Amortization Net Intangible Lease Assets Above-Market In-Place Lease Assets Absorption Period Costs Intangible Lease Origination Costs Intangible Below-Market In-Place Lease Liabilities $ $ $ $ 2,481 (833) 1,648 10,589 (9,305) 1,284 $ $ $ $ 149,927 (70,465) 79,462 154,582 (83,254) 71,328 $ $ $ $ 100,424 (57,465) 42,959 128,857 (74,578) 54,279 $ $ $ $ 46,878 (19,660) 27,218 77,939 (44,564) 33,375 During 2017, 2016, and 2015, Columbia Property Trust recognized the following amortization of intangible lease assets and liabilities (in thousands): For the Years Ended December 31, 2017 2016 2015 Intangible Lease Assets Above-Market In-Place Lease Assets Absorption Period Costs Intangible Lease Origination Costs Intangible Below-Market In-Place Lease Liabilities $ $ $ 519 2,513 4,412 $ $ $ 16,807 28,718 45,972 $ $ $ 10,124 17,501 28,530 $ $ $ 6,883 12,996 19,345 F-11 The remaining net intangible assets and liabilities as of December 31, 2017, excluding amounts held for sale, will be amortized as follows (in thousands): For the Years Ending December 31, 2018 2019 2020 2021 2022 Thereafter Weighted-average amortization period Intangible Lease Assets Above-Market In-Place Lease Assets Absorption Period Costs Intangible Lease Origination Costs Intangible Below-Market In-Place Lease Liabilities $ 203 203 203 203 203 633 $ 16,898 $ 9,566 $ 14,665 12,800 8,112 6,585 20,402 8,651 7,770 3,727 2,708 10,537 $ 1,648 $ 79,462 $ 42,959 $ 8 years 5 years 5 years 6,325 5,968 4,535 1,591 1,287 7,512 27,218 6 years Intangible Assets and Liabilities Arising From In-Place Leases Where Columbia Property Trust Is the Lessee In-place ground leases where Columbia Property Trust is the lessee may have positive or negative value associated with effective contractual rental rates that are above or below market rates at the time of execution or assumption. Such values are calculated based on the present value (using a discount rate that reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be paid pursuant to the in-place lease and (ii) management's estimate of fair market lease rates for the corresponding in-place lease at the time of execution or assumption. This calculation includes significantly below-market renewal options for which exercise of the renewal option appears to be reasonably assured. These intangible assets and liabilities are measured over the actual or assumed (in the case of renewal options) remaining lease terms. The capitalized above-market and below-market in-place lease values are recorded as intangible lease liabilities and assets, respectively, and are amortized as an adjustment to property operating cost over the remaining term of the respective leases. Columbia Property Trust had gross below- market lease assets of approximately $140.9 million as of December 31, 2017 and 2016, net of accumulated amortization of $22.8 million and $20.2 million as of December 31, 2017 and 2016, respectively. Columbia Property Trust recognized amortization expense related to these assets of approximately $2.5 million for 2017, 2016, and 2015. As of December 31, 2017, the remaining net below-market lease asset will be amortized as follows (in thousands): For the Years Ending December 31: 2018 2019 2020 2021 2022 Thereafter Weighted-average amortization period Cash and Cash Equivalents $ $ 2,549 2,549 2,549 2,549 2,549 105,405 118,150 47 years Columbia Property Trust considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents. Cash equivalents may include cash and short-term investments. Short-term investments are stated at cost, which approximates fair value as of December 31, 2017 and 2016. Tenant Receivables, Net Tenant receivables consist of rental and reimbursement billings due from tenants. Tenant receivables are recorded at the original amount earned, less an allowance for any doubtful accounts, which approximates fair value. Management assesses the realizability of tenant receivables on an ongoing basis and provides for allowances as such balances, or portions thereof, become uncollectible. F-12 Columbia Property Trust adjusted the allowance for doubtful accounts by recording a provision for doubtful accounts, net of recoveries, in general and administrative expenses in the accompanying consolidated statements of operations of approximately $26,000 and $289,000 for 2017 and 2016, respectively. Straight Line Rent Receivable Straight line rent receivable reflects the amount of cumulative adjustments necessary to present rental income on a straight-line basis. Columbia Property Trust recognizes revenues on a straight-line basis, ratably over the term of each lease; however, leases often provide for payment terms that differ from the revenue recognized. When the amount of cash received is less than the amount of revenue recognized, typically early in the lease, straight line rent receivable is recorded for the difference. The receivable is depleted during periods later in the lease when the amount of cash paid by the tenant is greater than the amount of revenue recognized. Prepaid Expenses and Other Assets Prepaid expenses and other assets primarily include earnest money deposits, escrow accounts held by lenders to pay future real estate taxes, insurance and tenant improvements, notes receivable, nontenant receivables, prepaid taxes, insurance and operating costs, unamortized deferred financing costs related to the line of credit (the "Revolving Credit Facility"), interest rate swaps (when in an asset position), certain corporate assets, hotel inventory, and deferred tax assets. Prepaid expenses are recognized over the period to which the good or service relates. Other assets are written off when the asset no longer has future value, or when the company is no longer obligated for the corresponding liability. Deferred Financing Costs Deferred financing costs include costs incurred to secure debt from third-party lenders. Deferred financing costs, except for costs related to the Revolving Credit Facility, are presented as a direct reduction to the carrying amount of the related debt for all periods presented. Deferred financing costs related to the Revolving Credit Facility are included in prepaid expenses and other assets. Columbia Property Trust recognized amortization of deferred financing costs for the years ended December 31, 2017, 2016, and 2015 of approximately $2.8 million, $3.3 million, and $4.4 million, respectively, which is included in interest expense in the accompanying consolidated statements of operations. Deferred Lease Costs Deferred lease costs include costs incurred to procure leases that are paid to third parties or tenants, and incentives that are provided to tenants under the terms of their leases. These costs are capitalized and amortized on a straight-line basis over the terms of the lease. Amortization of third-party leasing costs is reflected as amortization expense, and amortization of lease incentives is reflected as an adjustment to rental income. During 2017, 2016, and 2015, Columbia Property Trust recognized amortization expense for deferred lease costs of $5.2 million, $9.3 million, and $8.9 million, respectively. During 2017, 2016, and 2015, Columbia Property Trust recognized adjustments to rental income for amortization of deferred lease costs of $3.3 million, $3.9 million, and $3.7 million, respectively. Upon receiving notification of a tenant's intention to terminate a lease, unamortized deferred lease costs are amortized over the shortened lease period. As of December 31, 2017 and 2016, deferred lease costs includes $68.4 million and $69.0 million, respectively, in unamortized lease incentives for a lease at the 222 East 41st Street Property, which will continue to be amortized to rental income over the approximately 30-year remaining lease term. Investments in Development Authority Bonds and Obligations Under Capital Leases In connection with the acquisition of certain real estate assets, Columbia Property Trust has assumed investments in development authority bonds and corresponding obligations under capital leases of land or buildings. The county development authority issued bonds to developers to finance the initial development of these projects, a portion of which was then leased back to the developer under a capital lease. This structure enabled the developer to receive property tax abatements over the concurrent terms of the development authority bonds and capital leases. The remaining property tax abatement benefits transferred to Columbia Property Trust upon assumption of the bonds and corresponding capital leases at acquisition. The development authority bonds and the obligations under the capital leases are both recorded at their net present values, which Columbia Property Trust believes approximates fair value. The related amounts of interest income and expense are recognized as earned in equal amounts and, accordingly, do not impact net income. Accounts Payable, Accrued Expenses, and Accrued Capital Expenditures Accounts payable, accrued expenses, and accrued capital expenditures primarily include payables related to property operations, capital projects, and interest rate swaps (when in a liability position). As of December 31, 2017 and 2016, accounts payable, accrued F-13 expenses, and accrued capital expenditures includes approximately $54.7 million and $69.0 million in lease incentives related to a lease at the 222 East 41st Street Property. Line of Credit and Notes Payable Certain mortgage notes included in line of credit and notes payable in the accompanying consolidated balance sheets were assumed upon the acquisition of real properties. When debt is assumed, Columbia Property Trust records the loan at fair value. The fair value adjustment is amortized to interest expense over the term of the loan using the effective interest method. As described in the Deferred Financing Costs section above, line of credit and notes payable is presented on the accompanying consolidated balance sheet net of deferred financing costs related to term loans and notes payable of $3.0 million and $3.1 million as of December 31, 2017 and December 31, 2016, respectively. Bonds Payable In August 2016, Columbia Property Trust issued $350 million of its 10-year unsecured 3.650% senior notes at 99.626% of their face value (the "2026 Bonds Payable"). In March 2015, Columbia Property Trust issued $350.0 million of its 10-year unsecured 4.150% senior notes at 99.859% of their face value (the "2025 Bonds Payable"). The discount on the 2026 Bonds Payable and the 2025 Bonds Payable is amortized to interest expense over the term of the bonds using the effective-interest method. As described in the Deferred Financing Costs section above, bonds payable are presented on the accompanying consolidated balance sheet net of deferred financing costs related to bonds payable of $4.8 million and $5.4 million as of December 31, 2017 and December 31, 2016, respectively. Common Stock Repurchase Program Columbia Property Trust's board of directors has authorized the repurchases of its common stock, par value $0.01 per share, subject to certain limitations, as described in Note 8, Equity. Columbia Property Trust expects to acquire shares primarily through open market transactions, subject to market conditions and other factors. As of December 31, 2017, $194.8 million remains available for repurchases under the current stock repurchase program. Common stock repurchases are charged against equity as incurred, and the repurchased shares are retired. See Note 8, Equity, for additional details. Preferred Stock Columbia Property Trust is authorized to issue up to 100.0 million shares of one or more classes or series of preferred stock with a par value of $0.01 per share. Columbia Property Trust's board of directors may determine the relative rights, preferences, and privileges of each class or series of preferred stock issued, which may be more beneficial than the rights, preferences, and privileges attributable to Columbia Property Trust's common stock. To date, Columbia Property Trust has not issued any shares of preferred stock. Common Stock The par value of Columbia Property Trust's issued and outstanding shares of common stock is classified as common stock, with the remainder allocated to additional paid-in capital. Distributions To maintain its status as a REIT, Columbia Property Trust is required by the Internal Revenue Code of 1986, as amended (the "Code"), to make distributions to stockholders each taxable year equal to at least 90% of its REIT taxable income, computed without regard to the dividends-paid deduction and by excluding net capital gains attributable to stockholders ("REIT taxable income"). Distributions to the stockholders are determined by the board of directors of Columbia Property Trust and are dependent upon a number of factors relating to Columbia Property Trust, including funds available for payment of distributions, financial condition, the timing of property acquisitions, capital expenditure requirements, and annual distribution requirements in order to maintain Columbia Property Trust's status as a REIT under the Code. Interest Rate Swap Agreements Columbia Property Trust enters into interest rate swap contracts to mitigate its interest rate risk on the related financial instruments. Columbia Property Trust does not enter into derivative or interest rate transactions for speculative purposes; however, certain of its derivatives may not qualify for hedge accounting treatment. Columbia Property Trust records the fair value of its interest rate swaps on its consolidated balance sheet either as prepaid expenses and other assets or as accounts payable, accrued expenses, and accrued capital expenditures. Changes in the fair value of the effective portion of interest rate swaps that are designated as cash F-14 flow hedges are recorded as other comprehensive income, while changes in the fair value of the ineffective portion of a hedge, if any, is recognized currently in earnings. Changes in the fair value of interest rate swaps that do not qualify for hedge accounting treatment are recorded as gain or loss on interest rate swaps. Amounts received or paid under interest rate swap agreements are recorded as interest expense for contracts that qualify for hedge accounting treatment and as loss on interest rate swaps for contracts that do not qualify for hedge accounting treatment. The following tables provide additional information related to Columbia Property Trust's interest rate swaps as of December 31, 2017 and 2016 (in thousands): Instrument Type Derivatives Designated as Hedging Instruments: Interest rate contracts Interest rate contracts Balance Sheet Classification 2017 2016 Estimated Fair Value as of December 31, Prepaid expenses and other assets Accounts payable $ $ 903 $ — $ — (882) Columbia Property Trust applied the provisions of ASC 820 in recording its interest rate swaps at fair value. The fair values of the interest rate swaps, classified under Level 2, were determined using a third-party proprietary model that is based on prevailing market data for contracts with matching durations, current and anticipated London Interbank Offered Rate ("LIBOR") information, and reasonable estimates about relevant future market conditions. Columbia Property Trust has determined that the fair value, as determined by the third party, is reasonable. Years Ended December 31, 2017 2016 2015 Market value adjustment to interest rate swaps designated as hedging instruments and included in other comprehensive income Loss on interest rate swap recognized through earnings $ $ 1,786 $ — $ 1,553 $ — $ (1,570) (1,110) In July 2015, Columbia Property Trust paid $1.1 million to settle the interest rate swap on a $450 million term loan, which is reflected in earnings. During the periods presented, there was no other hedge ineffectiveness required to be recognized into earnings on the interest rate swaps that qualified for hedge accounting treatment. Revenue Recognition All leases on real estate assets held by Columbia Property Trust are classified as operating leases, and the related base rental income is generally recognized on a straight-line basis over the terms of the respective leases. Tenant reimbursements are recognized as revenue in the period that the related operating cost is incurred and are billed to tenants pursuant to the terms of the underlying leases. Rental income and tenant reimbursements collected in advance are recorded as deferred income in the accompanying consolidated balance sheets. Management fees earned by Columbia Property Trust for services provided to certain of its unconsolidated joint ventures are recorded as asset and property management fee income during the period in which such services are provided. Lease termination fees are recorded as other property income and recognized on a straight-line basis from when Columbia Property Trust receives notification of termination through the date the tenant has lost the right to lease the space and Columbia Property Trust has satisfied all obligations under the related lease or lease termination agreement. In conjunction with certain acquisitions, Columbia Property Trust has entered into master lease agreements with various sellers, whereby the sellers are obligated to pay rent pertaining to certain nonrevenue-producing spaces either at the time of, or subsequent to, the property acquisition. These master leases were established at the time of acquisition to mitigate the potential negative effects of lost rental revenues and expense reimbursement income. Columbia Property Trust records payments received under master lease agreements as a reduction of the basis of the underlying property rather than rental income. There were no proceeds received from master leases during 2017, 2016, or 2015. Prior to disposition on January 31, 2017, Columbia Property Trust owned the Key Center Marriott, a full-service hotel, through a taxable REIT subsidiary. Revenues derived from the operations of the hotel include, but are not limited to, revenues from rental of rooms, food and beverage sales, telephone usage, and other service revenues. Revenue was recognized when rooms were occupied, when services performed, and when products were delivered. F-15 Income Taxes Columbia Property Trust has elected to be taxed as a REIT under the Code, and has operated as such beginning with its taxable year ended December 31, 2003. To qualify as a REIT, Columbia Property Trust must meet certain organizational and operational requirements, including a requirement to distribute at least 90% of its REIT taxable income, as defined by the Code, to its stockholders. As a REIT, Columbia Property Trust generally is not subject to income tax on income it distributes to stockholders. Columbia Property Trust's stockholder distributions typically exceed its taxable income due to the inclusion of noncash expenses, such as depreciation, in taxable income. As a result, Columbia Property Trust typically does not incur federal income taxes other than as described in the following paragraph. Columbia Property Trust is, however, subject to certain state and local taxes related to the operations of properties in certain locations, which have been provided for in the accompanying consolidated financial statements. Columbia Property Trust TRS, LLC, Columbia KCP TRS, LLC, and Columbia Energy TRS, LLC (collectively, the "TRS Entities") are wholly owned subsidiaries of Columbia Property Trust and are organized as Delaware limited liability companies. The TRS Entities, among other things, provide tenant services that Columbia Property Trust, as a REIT, cannot otherwise provide. Columbia Property Trust has elected to treat the TRS Entities as taxable REIT subsidiaries. Columbia Property Trust may perform certain additional, noncustomary services for tenants of its buildings through the TRS Entities; however, any earnings related to such services are subject to federal and state income taxes. In addition, for Columbia Property Trust to continue to qualify as a REIT, Columbia Property Trust must limit its investments in taxable REIT subsidiaries to 25% of the value of the total assets. The TRS Entities' deferred tax assets and liabilities represent temporary differences between the financial reporting basis and the tax basis of assets and liabilities based on the enacted rates expected to be in effect when the temporary differences reverse. If applicable, Columbia Property Trust records interest and penalties related to uncertain tax positions as general and administrative expense in the accompanying consolidated statements of operations. Segment Information As of December 31, 2017, Columbia Property Trust's reportable segments are determined based on the geographic markets in which it has significant investments. Columbia Property Trust considers geographic location when evaluating its portfolio composition, and in assessing the ongoing operations and performance of its properties (see Note 14, Segment Information). Reclassification Certain prior period amounts may be reclassified to conform to the current-period financial statement presentation. Within revenues on the accompanying consolidated statements of operations, management fees earned from unconsolidated joint ventures have been reclassified from other property income to a dedicated line item, asset and property management fee income, for all periods presented. Recent Accounting Pronouncements In August 2017, the Financial Accounting Standards Board (the "FASB") issued Accounting Standard Update 2017-12, Targeted Improvements to Accounting for Hedging Activities ("ASU 2017-12"). ASU 2017-12 aligns reporting requirements for hedging relationships with risk management activities and simplifies the application of hedge accounting. ASU 2017-12 eliminates the concept of recognizing periodic hedge ineffectiveness for cash flow hedges and allows for ongoing qualitative, rather than quantitative, testing of hedge effectiveness. ASU 2017-12 will be effective for Columbia Property Trust on January 1, 2019, with early adoption permitted. Columbia Property Trust elected to early adopt ASU 2017-12 effective December 1, 2017. The adoption of ASU 2017-12 resulted in a simplified process to determine the ongoing effectiveness of its cash flow hedge with no material impact on its consolidated financial statements or other disclosures. In February 2017, the FASB issued Accounting Standard Update 2017-05, Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Non-Financial Assets ("ASU 2017-05"), which will apply to the partial sale of non-financial assets, including real estate assets, to unconsolidated joint ventures. ASU 2017-05 will require Columbia Property Trust to measure its residual joint venture interest in the properties transferred to unconsolidated joint ventures at fair value as of the transaction date by recognizing a gain or loss on 100% of the asset transferred (i.e. to fully step-up the basis of the residual investment in the joint venture). Columbia Property Trust will adopt the new rule effective January 1, 2018 on a modified retrospective basis by recording a cumulative-effect adjustment to equity equal to the original gain or loss as of the respective transaction dates, adjusted to reflect the impact of depreciating the additional step-ups through January 1, 2018. The adoption of this standard will result in an increase to investment in unconsolidated joint ventures and equity by $357.8 million for the investments in the Market Square, 333 Market Street, and University Circle properties. F-16 In January 2017, the FASB issued Accounting Standards Update 2017-01, Clarifying the Definition of a Business ("ASU 2017-01"), which provides a more narrow definition of a business to be used in determining the accounting treatment of acquisitions. As a result, under the new standard, many acquisitions previously classified as business combinations will be treated as asset acquisitions. For asset acquisitions, unlike business combinations, transaction costs may be capitalized, and purchase price may be allocated on a relative fair-value basis. Columbia Property Trust elected to early adopt ASU 2017-01 as of October 1, 2017. As a result, transaction costs of $2.2 million were capitalized during the fourth quarter related to the acquisitions of 245-249 West 17th Street, 218 West 18th Street, and 149 Madison Avenue. See Note 3, Real Estate Transactions, for more information about these acquisitions. In February 2016, the FASB issued Accounting Standards Update 2016-02, Leases ("ASU 2016-02"), which amends the existing standards for lease accounting by requiring lessees to recognize most leases on their balance sheets and by making targeted changes to lessor accounting and reporting. The new standard will require lessees to record a right-of-use asset and a lease liability for all leases with a term of greater than 12 months, and classify such leases as either finance or operating leases based on the principle of whether or not the lease is effectively a financed purchase of the leased asset by the lessee, or not. This classification will determine whether the lease expense is recognized based on an effective interest method (finance leases) or on a straight-line basis over the term of the lease (operating leases). Leases with a term of 12 months or less will be accounted for using an approach that is similar to existing guidance for operating leases today. The new standard requires lessors to account for leases, using an approach that is substantially equivalent to existing guidance as applies to sales-type leases, direct financing leases, and operating leases. ASU 2016-02 will be effective for Columbia Property Trust on January 1, 2019 and supersedes previous leasing standards. Columbia Property Trust is primarily a lessor and is monitoring additional clarification regarding the treatment of certain features of its lease agreements that might be classified as non-lease components. Columbia Property Trust is also a lessee, primarily on ground leases, and it is evaluating the impact of ASU 2016-02 on accounting for such leases. In May 2014, the FASB issued Accounting Standards Update 2014-09, Revenue from Contracts with Customers ("ASU 2014-09"), which establishes a comprehensive model to account for revenues arising from contracts with customers. ASU 2014-09 applies to all contracts with customers, except those that are within the scope of other topics in the FASB's Accounting Standards Codification, such as real estate leases. ASU 2014-09 will require companies to perform a five-step analysis of transactions to determine when and how revenue is recognized. Columbia Property Trust expects the new standard to apply primarily to fees earned from managing properties owned by its unconsolidated joint ventures and certain parking agreements. Revenues for such services represented $6.7 million, $3.6 million, and $1.8 million, or 2.3%, 0.8%, and 0.3% of total revenues, for the years ended December 31, 2017, 2016, and 2015, respectively. Revenues derived from leases, which are excluded from ASU 2014-09 represented $281.0 million, $447.3 million, and $539.9 million, or 97.2%, 94.5%, and 95.4% of total revenues for the years ended December 31, 2017, 2016, and 2015, respectively. Given the structure of the asset and property management agreements currently in place with unconsolidated joint ventures and the parking agreements currently in place with existing tenants, Columbia Property Trust does not expect ASU 2014-09 to materially impact the timing or amount of revenue recognition; however, Columbia Property Trust will be required to provide more extensive disclosures about its revenue streams and contracts with customers. ASU 2014-09 was effective for Columbia Property Trust on January 1, 2018. Columbia Property Trust will use the modified retrospective approach of adoption, which will result in the recognition of a cumulative effect adjustment to equity, with no retrospective adjustments to prior periods. F-17 3. Real Estate Transactions Acquisitions During 2017, 2016, and 2015, Columbia Property Trust acquired the following properties and partial interests in properties: Property 2017 Location Date Percent Acquired Purchase Price (in thousands)(1) 149 Madison Avenue 1800 M Street New York, NY Washington, D.C. November 28, 2017 October 11, 2017 245-249 West 17th Street & 218 West 18th Street 114 Fifth Avenue 2015 229 West 43rd Street 116 Huntington Avenue 315 Park Avenue South & 1881 Campus Commons New York, NY New York, NY New York NY Boston, MA New York, NY & Reston, VA 100.0% $ 55.0% $ 100.0% $ 49.5% $ 87,700 231,550 (2) 514,100 108,900 (2) October 11, 2017 July 6, 2017 August 4, 2015 January 8, 2015 100.0 % $ 100.0 % $ 516,000 152,000 January 7, 2015 100.0 % $ 436,000 (1) Exclusive of transaction costs and price adjustments. See purchase price allocation table below for a breakout of the net purchase price for wholly-owned properties. (2) Purchase price is for our partial interests in the properties. These properties are owned through unconsolidated joint ventures. 149 Madison Avenue 149 Madison Avenue is a 12-story, 127,000-square-foot office building, which was vacant at the time of acquisition. Columbia Property Trust acquired 149 Madison Avenue subject to a ground lease which expired in January 2018. Columbia Property Trust plans to redevelop this property. For the period from November 28, 2017 to December 31, 2017, Columbia Property Trust recognized $10,300 of revenues and net income of $9,200 from 149 Madison Avenue. 1800 M Street Joint Venture Columbia Property Trust entered a new joint venture partnership with Allianz Real Estate of America LLC ("Allianz"), which simultaneously acquired 1800 M Street, a 10-story, 581,000-square-foot office building in Washington, D.C., that is 94% leased, for a total of $421.0 million (the "1800 M Street Joint Venture"). Columbia Property Trust owns a 55% interest in the 1800 M Street Joint Venture, and Allianz owns the remaining 45%. 245-249 West 17th Street & 218 West 18th Street 245-249 West 17th Street is made up of two interconnected 12- and six-story towers, totaling 281,000 square feet of office and retail space and 218 West 18th Street is a 12-story, 166,000-square-foot office building. As of the acquisition date, 245-249 West 17th Street was 100% leased to four tenants, including Twitter, Inc. (76%) and Room & Board, Inc. (21%); and, as of the acquisition date, 218 West 18th Street was 100% leased to seven tenants, including Red Bull North America, Inc. (25%), Company 3 (18%), SY Partners (16%), and SAE (16%). For the period from October 11, 2017 to December 31, 2017, Columbia Property Trust recognized revenues of $5.9 million and a net income of $1.8 million from 245-249 West 17th Street, and revenues of $3.0 million and net income of $0.8 million from 218 West 18th Street. 114 Fifth Avenue Joint Venture Columbia Property Trust acquired a 49.5% equity interest in a joint venture that owns the 114 Fifth Avenue property from Allianz (the "114 Fifth Avenue Joint Venture"). 114 Fifth Avenue is a 19-story, 352,000-square-foot building located in Manhattan’s Flatiron District that is 100% leased, and is unencumbered by debt. The 114 Fifth Avenue Joint Venture is owned by Columbia Property Trust (49.5%), Allianz (49.5%), and L&L Holding Company (1.0%). L&L Holding Company is the general partner and will continue to perform asset and property management services for the property. 229 West 43rd Street On August 4, 2015, Columbia Property Trust acquired the 481,000-square-foot office portion of the 229 West 43rd Street, a 16- story, 732,000-square-foot building located in the Times Square sub-market of Manhattan in New York, New York, for $516.0 million, exclusive of transaction costs and purchase price adjustments. As of the acquisition date, the 229 West 43rd Street Building F-18 was 98.0% leased to nine tenants, including Yahoo! (40%), Snapchat (13%), Collective, Inc. (12%), and MongoDB (10%). For the period from August 4, 2015 to December 31, 2015, Columbia Property Trust recognized revenues of $15.3 million and net income of $2.2 million from the 229 West 43rd Street. The net income includes acquisition expenses of $1.7 million. 116 Huntington Avenue On January 8, 2015, Columbia Property Trust acquired 116 Huntington Avenue, a 271,000-square-foot office building in Boston, Massachusetts, for $152.0 million, inclusive of capital credits. As of the acquisition date, the 116 Huntington Avenue Building was 78.0% leased to 17 tenants, including American Tower (21%), GE Healthcare (13%), and Brigham and Women's (12%). For the period from January 8, 2015 to December 31, 2015, Columbia Property Trust recognized revenues of $11.3 million and a net loss of $0.7 million from the 116 Huntington Avenue. The net loss includes acquisition expenses of $0.3 million. 315 Park Avenue South Building & 1881 Campus Commons Building On January 7, 2015, Columbia Property Trust acquired a portfolio of two assets, which included 315 Park Avenue South, a 327,000- square-foot office building in New York, New York, and 1881 Campus Commons, a 244,000-square-foot office building in Reston, Virginia. This portfolio was acquired for $436.0 million, exclusive of transaction costs and purchase price adjustments. As of the acquisition date, the 315 Park Avenue South was 94.9% leased to nine tenants, including Credit Suisse (74%). For the period from January 7, 2015 to December 31, 2015, Columbia Property Trust recognized revenues of $25.1 million and a net loss of $6.6 million from the 315 Park Avenue South. The net loss includes acquisition expenses of $1.2 million. As of the acquisition date, the 1881 Campus Commons was 78.0% leased to 15 tenants, including SOS International (15%) and Siemens (12%). For the period from January 7, 2015 to December 31, 2015, Columbia Property Trust recognized revenues of $5.8 million and a net loss of $1.3 million from the 1881 Campus Commons. The net loss includes acquisition expenses of $0.5 million. Columbia Property Trust sold 1881 Campus Commons on December 10, 2015, as described in the Dispositions section below. Purchase Price Allocations for Consolidated Property Acquisitions: 149 Madison Avenue 245-249 West 17th Street 218 West 18th Street 229 West 43rd Street 116 Huntington Avenue 315 Park Avenue South 1881 Campus Commons Location New York, NY New York, NY New York, NY New York, NY Boston, MA New York, NY Reston, VA Date Acquired November 28, 2017 October 11, 2017 October 11, 2017 August 4, 2015 January 8, 2015 January 7, 2015 January 7, 2015 Purchase Price: Land Building and improve- ments Intangible lease assets Intangible below market ground lease assets Intangible lease origin- ation costs Intangible below market lease liability Total purchase price $ 59,112 $ 113,149 $ 43,836 $ 207,233 — $ 119,633 $ 7,179 28,989 194,109 126,957 265,952 108,383 232,598 49,273 — — — — 27,408 12,120 27,039 7,907 16,912 4,643 — — — 30,244 — — 13,062 4,168 10,059 2,669 4,148 1,603 (7,131) (11,757) — (1,878) (7,487) (97) $ 88,101 $ 340,597 $ 175,324 $ 510,283 147,325 $ 365,804 $ 62,601 Note 2, Summary of Significant Accounting Policies, provides a discussion of the estimated useful life for each asset class. Pro Forma Financial Information: The following unaudited pro forma statements of operations presented for 2017, 2016, and 2015, have been prepared for Columbia Property Trust to give effect to the acquisitions of 245-249 West 17th Street, 218 West 18th Street, and 149 Madison Avenue as if the acquisitions had occurred on January 1, 2016; and 315 Park Avenue South, 1881 Campus Commons, 116 Huntington Avenue, F-19 and 229 West 43rd Street as if the acquisitions had occurred on January 1, 2014. The following unaudited pro forma financial results for Columbia Property Trust have been prepared for informational purposes only and are not necessarily indicative of future results or of actual results that would have been achieved had these acquisitions been consummated as of January 1, 2016 and January 1, 2014 (in thousands): Revenues Net income Net income per share – basic Net income per share – diluted Dispositions 2017 2016 2015 $ $ $ $ 319,064 183,318 1.51 1.51 $ $ $ $ 511,306 93,537 0.76 0.76 $ $ $ $ 582,699 46,363 0.37 0.37 During 2017, 2016, and 2015, Columbia Property Trust sold the following properties and partial interest in properties: Location Date % Sold Sales Price(1) (in thousands) Gain (Loss) on Sale (rounded, in thousands) Property 2017 University Circle & 333 Market Street(2) Key Center Tower & Marriott(4) Houston Properties(5) 2016 San Francisco, CA July 6, 2017 22.5% (3) $ 234,000 (2)(3) Cleveland, OH January 31, 2017 Houston, TX January 6, 2017 100.0% 100.0% $ 267,500 $ 272,000 SanTan Corporate Center Phoenix, AZ December 15, 2016 Sterling Commerce Dallas, TX November 30, 2016 9127 South Jamaica Street Denver, CO October 12, 2016 80 Park Plaza Newark, NJ September 30, 2016 9189, 9191 & 9193 South Jamaica Street 800 North Frederick 100 East Pratt(7) 2015 Denver, CO September 22, 2016 Suburban, MD Baltimore, MD July 8, 2016 March 31, 2016 1881 Campus Commons(8) Market Square(9) 11 Property Sale(10) Reston, VA December 10, 2015 Washington, D.C. Various(10) October 28, 2015 July 1, 2015 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 49.0 % 100.0 % $ $ $ 58,500 51,000 19,500 $ 174,500 $ 122,000 $ 48,000 $ 187,000 65,000 $ $ 291,600 (9) $ 433,300 $ $ $ $ $ $ $ $ $ $ $ $ $ 102,400 9,500 63,700 9,800 12,500 — (6) 21,600 27,200 2,100 (300) 500 3,100 20,200 (1) Exclusive of transaction costs and price adjustments. (2) Sales price is for the partial interests in the properties that were sold. Columbia Property Trust contributed the 333 Market Street building and the University Circle property to joint ventures, and simultaneously sold a 22.5% interest in those joint ventures for $234.0 million to Allianz, an unrelated third party (collectively, the "San Francisco Joint Ventures"). (3) On February 1, 2018, Allianz acquired another 22.5% interest in each of the San Francisco Joint Ventures at an aggregate price of $235.3 million, thereby reducing Columbia Property Trust's equity interest in each joint venture to 55.0%. These proceeds were used to reduce the balance on the $300 Million Bridge Loan and the Revolving Credit Facility, as described in Note 5, Line of Credit and Notes Payable. (4) Key Center Tower & Marriott were sold in one transaction for $254.5 million of gross proceeds and a $13.0 million, 10-year accruing note receivable from the principal of the buyer. As a result, Columbia Property Trust has applied the installment method to account for this transaction, and deferred $13.0 million of the total $22.5 million gain on sale. The Key Center Tower and Key Center Marriott generated net income of $14.5 million and $12.1 million for the years ended December 31, 2016 and 2015, respectively; and a net loss of $1.9 million for the first 31 days of 2017, excluding the gain on sale. (5) 5 Houston Center, Energy Center I, and 515 Post Oak were sold in one transaction. These properties generated net income of $11.1 million and $12.9 million for the years ended December 31, 2016 and 2015, respectively; and a net loss of $14.9 thousand for the first six days of 2017, excluding the gain on sale. (6) Columbia Property Trust recorded a de minimus loss on the sale of 9127 South Jamaica Street. (7) The net sale proceeds of $159.4 million from 100 East Pratt were used to repay the $119.0 million remaining on the 2015 Bridge Loan on April 1, 2016. F-20 (8) The net proceeds from the sale of 1881 Campus Commons were used to reduce the outstanding balance of the 2015 Bridge Loan. (9) Sale price is for our partial interest in the property. On October 28, 2015, Columbia Property Trust transferred the Market Square properties, valued at $595.0 million and subject to a $325.0 million mortgage note, to a joint venture and sold a 49% interest in that joint venture to Blackstone Property Partners for net proceeds of approximately $120.0 million. Columbia Property Trust retains a 51% interest in the Market Square Joint Venture. See Note 4, Unconsolidated Joint Ventures, for additional information. (10) Columbia Property Trust closed on the sale of 11 properties on July 1, 2015 (the "11 Property Sale"). The 11 Property Sale included 170 and 180 Park Avenue in Northern New Jersey; 1580 West Nursery Road in Baltimore; Acxiom, Highland Landmark III, The Corridors III, 215 Diehl Road, 544 Lakeview, and Bannockburn Lake III in Chicago; and Robbins Road and 550 King Street in Boston. The proceeds for 10 of the properties were available on July 1, 2015, and the remaining proceeds were available on August 3, 2015. For the period from January 1, 2015 through July 1, 2015, the aggregate net income, excluding the gain on sale, for the properties included in the 11 Property Sale was $6.5 million; and for the year ended December 31, 2015, the net income for the properties included in the 11 Property Sale was $3.0 million, excluding the gain on sale. 4. Unconsolidated Joint Ventures As of December 31, 2017 and December 31, 2016, Columbia Property Trust owns interests in the following properties through joint ventures, which are accounted for using the equity method of accounting: Joint Venture(1) Property Name Geographic Market Market Square Joint Venture Market Square Washington, D.C. University Circle Joint Venture University Circle San Francisco 333 Market Street Joint Venture 333 Market Street San Francisco 114 Fifth Avenue Joint Venture 114 Fifth Avenue New York 1800 M Street Joint Venture 1800 M Street Washington, D.C. Carrying Value of Investment Ownership Interest December 31, 2017 December 31, 2016 51.0% 77.5% (2) 77.5% (2) 49.5% 55.0% $ 128,411 $ 127,346 173,798 288,236 110,311 242,486 — — — — $ 943,242 $ 127,346 (1) See Note 3, Real Estate Transactions, for a description of the formation of these joint ventures. (2) On February 1, 2018, Allianz acquired from Columbia Property Trust an additional 22.5% interest in each of the University Circle Joint Venture and the 333 Market Street Joint Venture, thereby reducing Columbia Property Trust's equity interest in each joint venture to 55.0%. Columbia Property Trust has determined that each of the joint ventures do not qualify as variable interest entities. However, Columbia Property Trust and its partners have substantive participation rights in the joint ventures, including management selection and termination, and the approval of operating and capital decisions. As such, Columbia Property Trust uses the equity method of accounting to record its investment in these joint ventures. Under the equity method, the investment in the joint ventures is recorded at cost and adjusted for cash contributions and distributions, and allocations of income or loss. Columbia Property Trust evaluates the recoverability of its investment in unconsolidated joint ventures in accordance with accounting standards for equity investments by first reviewing the investment for any indicators of impairment. If indicators are present, Columbia Property Trust estimates the fair value of the investment. If the carrying value of the investment is greater than the estimated fair value, management makes an assessment of whether the impairment is "other-than-temporary." In making this assessment, management considers the following: (1) the length of time and the extent to which fair value has been less than cost, and (2) Columbia Property Trust's intent and ability to retain its interest long enough for a recovery in market value. Based on the assessment as described above, Columbia Property Trust has determined that none of its investments in joint ventures are other- than-temporarily impaired as of December 31, 2017. Mortgage Debt and Related Guaranty The Market Square Joint Venture is the only joint venture with mortgage debt. As of December 31, 2017 and December 31, 2016, the outstanding balance on the interest-only Market Square mortgage note is $325.0 million, bearing interest at 5.07%. The Market Square mortgage note matures on July 1, 2023. Columbia Property Trust guarantees a portion of the Market Square mortgage note, the amount of which has been reduced to $11.2 million as of December 31, 2017 from $16.1 million as of December 31, 2016, as a result of leasing at the property. The amount of the guaranty will continue to be reduced as space is leased. F-21 Condensed Combined Financial Information Summarized balance sheet information for each of the unconsolidated joint ventures is as follows (in thousands): Total Assets Total Debt Total Equity(1) December 31, 2017 December 31, 2016 December 31, 2017 December 31, 2016 December 31, 2017 December 31, 2016 Market Square Joint Venture $ 590,115 $ 587,344 $ 324,708 $ 324,656 $ 244,506 $ 242,802 University Circle Joint Venture 333 Market Street Joint Venture 114 Fifth Avenue Joint Venture 1800 M Street Joint Venture 227,368 385,297 392,486 458,964 — — — — — — — — — — — — 221,154 368,994 170,525 438,227 — — — — $ 2,054,230 $ 587,344 $ 324,708 $ 324,656 $ 1,443,406 $ 242,802 (1) There is an aggregate basis difference of $32.0 million, which represents the differences between the historical costs recorded at the joint venture level, and Columbia Property Trust's investment in the joint ventures and results from differences in the timing of each partner's interest acquisition and formation costs incurred by Columbia Property Trust. The basis difference is being amortized to income (loss) from unconsolidated joint ventures over the lives of the related assets or liabilities. Summarized income statement information for the unconsolidated joint ventures for the years ended December 31, 2017, 2016 and 2015 is as follows (in thousands): Total Revenues Net Income (Loss) Columbia Property Trust's Share of Net Income (Loss) 2017 2016 2015 2017 2016 2015 2017 2016 2015 Market Square Joint Venture $ 41,749 $ 41,230 $ 7,962 $ (15,192) $ (14,825) $ (2,239) $ (7,747) $ (7,561) $ (1,142) University Circle Joint Venture 333 Market Street Joint Venture 114 Fifth Avenue Joint Venture 1800 M Street Joint Venture 19,386 12,971 20,133 8,005 — — — — — — — — 9,826 6,948 (4,885) 619 — — — — — — — — 7,561 5,331 (2,820) 326 — — — — — — — — $ 102,244 $ 41,230 $ 7,962 $ (2,684) $ (14,825) $ (2,239) $ 2,651 $ (7,561) $ (1,142) Property and Asset Management Fees Columbia Property Trust provides property and asset management services to the Market Square Joint Venture, the University Circle Joint Venture, the 333 Market Street Joint Venture, and the 1800 M Street Joint Venture. Under these agreements, Columbia Property Trust oversees the day-to-day operations of these joint ventures and their properties, including property management, property accounting, and other administrative services. During the years ended December 31, 2017, 2016, and 2015, Columbia Property Trust earned the following fees from these unconsolidated joint ventures: Market Square Joint Venture University Circle Joint Venture 333 Market Street Joint Venture 1800 M Street Joint Venture 2017 2016 2015 1,998 $ 2,122 $ 1,000 367 417 — — — 3,782 $ 2,122 $ 213 — — — 213 $ $ Columbia Property Trust also received reimbursements of property operating costs of $2.0 million and $0.5 million for the years ended December 31, 2017 and 2016, respectively, and none for the year ended December 31, 2015, which are included in other property income revenues in the accompanying consolidated statements of operations. Property management fees of $0.4 million, and $0.1 million, respectively, were due to Columbia Property Trust from the joint ventures and are included in prepaid expenses and other assets on the accompanying consolidated balance sheets as of December 31, 2017 and December 31, 2016, respectively. F-22 5. Line of Credit and Notes Payable As of December 31, 2017 and 2016, Columbia Property Trust had the following line of credit and notes payable indebtedness outstanding (excluding bonds payable; see Note 6, Bonds Payable) in thousands: Term Debt or Interest Only Outstanding Balance as of December 31, Maturity 2017 2016 Interest only 7/31/2020 $ 300,000 $ 300,000 Facility $300 Million Term Loan $300 Million Bridge Loan Revolving Credit Facility $150 Million Term Loan 263 Shuman Boulevard Building mortgage note(5) One Glenlake Building mortgage note 650 California Street Building mortgage note 221 Main Building mortgage note Less: Deferred financing costs related to term loans, bridge loan, and mortgage notes payable Total indebtedness Rate as of December 31, 2017 LIBOR + 110 bp (1) LIBOR + 110 bp (2) LIBOR + 100 bp (3) LIBOR + 110 bp (4) Interest only 11/27/2018 Interest only Interest only Term debt Term debt 7/31/2019 7/29/2022 7/1/2017 12/10/2018 7/1/2019 Interest only 5/10/2017 10.55% Interest only 5.80% 3.60% 3.95% 300,000 152,000 150,000 49,000 23,176 — — (2,991) $ 971,185 $ — — 150,000 49,000 26,315 126,287 73,000 (3,136) 721,466 (1) The $300 Million Term Loan bears interest, at Columbia Property Trust's option, at LIBOR, plus an applicable margin ranging from 0.90% to 1.75% for LIBOR loans, or an alternate base rate, plus an applicable margin ranging from 0.00% to 0.75% for base-rate loans, based on Columbia Property Trust's applicable credit rating. (2) The $300 Million Bridge Loan bears interest, at Columbia Property Trust's option, at LIBOR, plus an applicable margin ranging from 0.90% to 1.75% for LIBOR loans, or an alternate base rate, plus an applicable margin ranging from 0.00% to 0.75% for base-rate loans, based on Columbia Property Trust's applicable credit rating. (3) Borrowings under the Revolving Credit Facility, as described below, bear interest at the option of Columbia Property Trust at LIBOR, plus an applicable margin ranging from 0.875% to 1.55% for LIBOR-based borrowings, or an alternate base rate, plus an applicable margin ranging from 0.00% to 0.55% for base-rate borrowings, based on Columbia Property Trust's applicable credit rating. (4) Columbia Property Trust is party to an interest rate swap agreement with a notional amount of $150.0 million, which effectively fixes its interest rate on the $150 Million Term Loan, as further described below, at 3.07% and terminates on July 29, 2022. This interest rate swap agreement qualifies for hedge accounting treatment; therefore, changes in the fair value are recorded as a market value adjustment to interest rate swap in the accompanying consolidated statement of other comprehensive income. (5) The OfficeMax lease at 263 Shuman Boulevard expired in May 2017, and the mortgage note matured in July 2017. Columbia Property Trust is working with the special-servicer to effect the transfer of the property to the lender in settlement of the loan principal, accrued interest expense and accrued property operating expenses. In the third and fourth quarters of 2017, Columbia Property Trust accrued related interest expense of $2.6 million at the default rate of 10.55%, and property operating expenses of $0.9 million, primarily related to property taxes and repairs and maintenance. $300 Million Bridge Loan On November 27, 2017, Columbia Property Trust entered into a $300.0 million, one-year, unsecured loan with a syndicate of banks led by JPMorgan Chase Bank, N.A. (the "$300 Million Bridge Loan"). The proceeds from the $300 Million Bridge were used to repay borrowings under the Revolving Credit Facility, which were used to fund real estate acquisitions. At Columbia Property Trust's option, borrowings under the $300 Million Bridge Loan bear interest at either (i) an alternate base rate, plus an applicable margin based on five stated pricing levels ranging from 0.00% to 0.75% or (ii) LIBOR, plus an applicable margin based on five stated pricing levels ranging from 0.90% to 1.75%, in each case based on Columbia Property Trust's credit rating. The $300 Million Bridge Loan provides for one six-month extension option to May 24, 2019, subject to certain fees and the satisfaction of certain other conditions. Term Loan Amendment On July 25, 2017, Columbia Property Trust amended the terms of its $150 Million Term Loan, to reduce the current interest rate from 3.52% to 3.07% per annum. The amendment reduced the interest rate from LIBOR, plus an applicable margin ranging from 1.40% to 2.35%, to LIBOR, plus an applicable margin ranging from 0.90% to 1.75%. The maturity date, debt covenants, and other terms of the $150 Million Term Loan are unchanged. The interest rate is effectively fixed with an interest rate swap agreement, which is designated as a cash flow hedge. F-23 Debt Covenants The $300 Million Term Loan, the $300 Million Bridge Loan, the $150 Million Term Loan, and the Revolving Credit Facility (collectively, the "Debt Facilities") contain representations and warranties, financial and other affirmative and negative covenants, events of defaults, and remedies typical for these types of facilities. The financial covenants in the Debt Facilities: (a) limit the ratio of secured debt to total asset value, as defined therein, to 40% or less; (b) require the fixed charge coverage ratio, as defined therein, to be at least 1.50:1.00; limit the ratio of debt to total asset value, as defined therein, to 60% or less; (c) (d) require the ratio of unencumbered adjusted net operating income, as defined therein, to unsecured interest expense, as defined therein, to be at least 1.75:1.00; (e) require the ratio of unencumbered asset value, as defined therein, to total unsecured debt, as defined therein, to be at least 1.66:1.00; and (f) require maintenance of certain minimum tangible net worth balances. As of December 31, 2017, Columbia Property Trust believes it was in compliance with the restrictive financial covenants on its Debt Facilities and notes payable obligations. Fair Value of Debt The estimated fair value of Columbia Property Trust's consolidated line of credit and notes payable as of December 31, 2017 and 2016, was approximately $975.3 million and $728.5 million, respectively. The related carrying value of the line of credit and notes payable as of December 31, 2017 and 2016, was $974.2 million and $724.6 million, respectively. Columbia Property Trust estimated the fair value of its line of credit by obtaining estimates for similar facilities from multiple market participants as of the respective reporting dates. Therefore, the fair values determined are considered to be based on observable market data for similar instruments (Level 2). The fair values of all other debt instruments were estimated based on discounted cash flow analyses using the current incremental borrowing rates for similar types of borrowing arrangements as of the respective reporting dates (Level 3). Interest Paid and Capitalized As of December 31, 2017 and 2016, Columbia Property Trust's weighted-average interest rate on its consolidated line of credit and notes payable was approximately 3.16% and 3.09%, respectively. Columbia Property Trust made interest payments of approximately $21.5 million, $27.8 million, and $54.0 million during 2017, 2016, and 2015, respectively, of which approximately $0.7 million, $0.3 million, and $0.6 million was capitalized during 2017, 2016, and 2015, respectively. Debt Repayments and Maturities During 2017 and 2016 Columbia Property Trust made the following debt repayments: • • • • • On August 17, 2017, Columbia Property Trust repaid the $124.8 million balance of the 650 California Street building mortgage note, which was originally scheduled to mature on July 1, 2019. Columbia Property Trust recognized a loss on early extinguishment of debt of $0.3 million related to unamortized deferred financing costs. On March 10, 2017, Columbia Property Trust repaid the $73.0 million balance of the 221 Main Street building mortgage note, which was originally scheduled to mature on May 10, 2017. Columbia Property Trust recognized a loss on early extinguishment of debt of $45,000 related to unamortized deferred financing costs. On October 3, 2016, a portion of the proceeds from the sale of the 80 Park Plaza Property was used to repay the $99.0 million remaining outstanding balance on the Revolving Credit Facility. On June 30, 2016, Columbia Property Trust used borrowings on the Revolving Credit Facility to repay the $39.0 million SanTan Corporate Center mortgage notes, which were scheduled to mature on October 11, 2016. Columbia Property Trust recognized a loss on early extinguishment of debt of $10,000 related to unamortized deferred financing costs. On April 1, 2016, Columbia Property Trust repaid the $119.0 million remaining on the 2015 Bridge Loan, which was used to finance a portion of the 229 West 43rd Street Building acquisition in August of 2015. The 2015 Bridge Loan was scheduled to mature on August 4, 2016. Columbia Property Trust recognized a loss on early extinguishment of debt of $82,000 related to unamortized deferred financing costs. F-24 The following table summarizes the aggregate maturities of Columbia Property Trust's line of credit and notes payable as of December 31, 2017 (in thousands): 2018 2019 2020 2021 2022 Thereafter Total(1) $ 323,176 152,000 300,000 — 150,000 — $ 925,176 (1) The $49.0 million 263 Shuman mortgage note is excluded from this table. The mortgage note matured in July 2017. Columbia Property Trust is working with the special-servicer to effect the transfer of the property to the lender in settlement of the loan principal, accrued interest expense, and accrued property operating expenses. 6. Bonds Payable On August 12, 2016, Columbia Property Trust OP issued $350 million of 10-year, unsecured 3.650% senior notes, which are guaranteed by Columbia Property Trust, at 99.626% of its face value (the "2026 Bonds Payable"), pursuant to a shelf registration statement. Columbia Property Trust OP received net proceeds from the 2026 Bonds Payable of $346.4 million, which were used to redeem $250.0 million of seven-year, unsecured 5.875% senior notes due April 2018 (the "2018 Bonds Payable"). The 2026 Bonds Payable require semi-annual interest payments in February and August based on a contractual annual interest rate of 3.650%. In the accompanying consolidated balance sheets, the 2026 Bonds Payable are shown net of the initial issuance discount of approximately $1.3 million, which will be amortized to interest expense over the term of the 2026 Bonds Payable using the effective interest method. The principal amount of the 2026 Bonds Payable is due and payable on the maturity date, August 15, 2026. In March 2015, Columbia Property Trust OP issued $350.0 million of 10-year, unsecured 4.150% senior notes, which are guaranteed by Columbia Property Trust, at 99.859% of their face value (the "2025 Bonds Payable"), pursuant to a shelf registration statement. Columbia Property Trust OP received proceeds from the 2025 Bonds Payable, net of fees, of $347.2 million. The 2025 Bonds Payable require semi-annual interest payments in April and October based on a contractual annual interest rate of 4.150%. In the accompanying consolidated balance sheets, the 2025 Bonds Payable are shown net of the initial issuance discount of approximately $0.5 million, which will be amortized to interest expense over the term of the 2025 Bonds Payable using the effective interest method. The principal amount of the 2025 Bonds Payable is due and payable on the maturity date, April 1, 2025. During the year ended December 31, 2017, Columbia Property Trust made interest payments of $27.4 million on the 2025 Bonds Payable and 2026 Bonds Payable; and during the year ended December 31, 2016, Columbia Property Trust made interest payments of $28.0 million on the 2025 Bonds Payable and the 2018 Bonds Payable. Interest payments on the 2026 Bonds Payable began in February 2017. The restrictive covenants on the 2026 Bonds Payable and the 2025 Bonds Payable, as defined, pursuant to an indenture include: • • • • a limitation on the ratio of debt to total assets, as defined, to 60%; limits to Columbia Property Trust's ability to incur debt if the consolidated income available for debt service to annual debt service charge, as defined, for four previous consecutive fiscal quarters is less than 1.5:1 on a pro forma basis; limits to Columbia Property Trust's ability to incur liens if, on an aggregate basis for Columbia Property Trust, the secured debt amount would exceed 40% of the value of the total assets; and a requirement that the ratio of unencumbered asset value, as defined, to total unsecured debt be at least 150% at all times. As of December 31, 2017, Columbia Property Trust believes it was in compliance with the restrictive financial covenants on its 2026 Bonds Payable and 2025 Bonds Payable. The estimated fair value of the 2025 Bonds Payable and the 2026 Bonds Payable as of December 31, 2017 and 2016, was approximately $702.8 million and $703.1 million, respectively. The related carrying value of the bonds payable, net of discounts, as of December 31, 2017 and 2016, was $698.5 million and $698.3 million, respectively. The fair value of the bonds payable was estimated based on discounted cash flow analyses using the current incremental borrowing rates for similar types of borrowing as of the respective reporting dates (Level 2). The discounted cash flow method of assessing fair value results in a general approximation of value, which may differ from the price that could be achieved in a market transaction. F-25 7. Commitments and Contingencies Commitments Under Existing Lease Agreements Certain lease agreements include provisions that, at the option of the tenant, may obligate Columbia Property Trust to expend capital to expand an existing property or provide other expenditures for the benefit of the tenant. As of December 31, 2017, no tenants have exercised such options that have not been materially satisfied or recorded as a liability in the accompanying consolidated balance sheets. Obligations Under Operating Leases Columbia Property Trust owns three properties that are subject to ground leases with expiration dates of February 28, 2062, December 14, 2077, and July 31, 2099, respectively. The lease expiring on December 14, 2077, has been fully prepaid. Columbia Property Trust also leases space for its corporate office. Columbia Property Trust incurred $2.6 million in rent expense related to such leases in 2017, 2016, and 2015. As of December 31, 2017, the required payments under the terms of the remaining two consolidated ground leases and the corporate office lease are as follows (in thousands): 2018 2019 2020 2021 2022 Thereafter Total $ $ 3,282 3,360 3,382 3,405 3,587 192,352 209,368 Obligations Under Capital Leases The building at Three Glenlake is subject to a capital lease of land. This obligation requires payments equal to the amounts of principal and interest receivable from related investments in development authority bonds, which mature in 2021. The required payments under the terms of the leases are as follows as of December 31, 2017 (in thousands): 2018 2019 2020 2021 2022 Thereafter Amounts representing interest Total Guaranty of Debt of Unconsolidated Joint Venture $ 7,200 7,200 7,200 127,200 — — 148,800 (28,800) $ 120,000 Upon entering into the Market Square Joint Venture in October 2015, Columbia Property Trust entered into a guaranty of a $25.0 million portion of the Market Square mortgage note, the amount of which is reduced as space is leased. As a result of leasing, the guaranty has been reduced to $11.2 million as of December 31, 2017. Columbia Property Trust believes that the likelihood of making a payment under this guaranty is remote; therefore, no liability has been recorded related to this guaranty as of December 31, 2017. Litigation Columbia Property Trust is subject to various legal proceedings, claims, and administrative proceedings arising in the ordinary course of business, some of which are expected to be covered by liability insurance. Management makes assumptions and estimates concerning the likelihood and amount of any reasonably possible loss relating to these matters using the latest information available. Columbia Property Trust records a liability for litigation if an unfavorable outcome is probable and the amount of loss or range of loss can be reasonably estimated. If an unfavorable outcome is probable and a reasonable estimate of the loss is a range, Columbia F-26 Property Trust accrues the best estimate within the range. If no amount within the range is a better estimate than any other amount, Columbia Property Trust accrues the minimum amount within the range. If an unfavorable outcome is probable but the amount of the loss cannot be reasonably estimated, Columbia Property Trust discloses the nature of the litigation and indicates that an estimate of the loss or range of loss cannot be made. If an unfavorable outcome is reasonably possible and the estimated loss is material, Columbia Property Trust discloses the nature and estimate of the possible loss of the litigation. Columbia Property Trust does not disclose information with respect to litigation where the possibility of an unfavorable outcome is considered to be remote. Based on current expectations, such matters, both individually and in the aggregate, are not expected to have a material adverse effect on the liquidity, results of operations, business, or financial condition of Columbia Property Trust. Columbia Property Trust is not currently involved in any legal proceedings of which management would consider the outcome to be reasonably likely to have a material adverse effect on the results of operations or financial condition of Columbia Property Trust. 8. Equity Common Stock Repurchase Program Columbia Property Trust's board of directors authorized the repurchase of up to an aggregate of $200.0 million of its common stock, par value $0.01 per share, from September 4, 2015 through September 4, 2017 (the "2015 Stock Repurchase Program"). Under the 2015 Stock Repurchase Program, Columbia Property Trust acquired 5.6 million shares at an average price of $21.85 per share, for aggregate purchases of $121.4 million. Columbia Property Trust's board of directors authorized a second stock repurchase program to purchase up to an aggregate of $200.0 million of its common stock, par value $0.01 per share, from September 4, 2017 through September 4, 2019 (the "2017 Stock Repurchase Program"). During the year ended December 31, 2017, Columbia Property Trust repurchased 2.7 million shares at an average price of $21.46 per share, for aggregate purchases of $57.6 million under the 2015 Stock Repurchase Program and the 2017 Stock Repurchase Program. As of December 31, 2017, $194.8 million remains available for repurchases under the 2017 Stock Repurchase Program. Common stock repurchases are charged against equity as incurred, and the repurchased shares are retired. Columbia Property Trust will continue to evaluate the purchase of shares, primarily through open market transactions, which are subject to market conditions and other factors. Long-Term Incentive Plan Columbia Property Trust maintains a shareholder-approved, long-term incentive plan that provides for grants of stock to be made to certain employees and independent directors of Columbia Property Trust (as amended and restated, the "LTIP"). In May 2017, Columbia Property Trust's shareholders approved the LTIP, and 4.8 million shares are authorized and reserved for issuance under the LTIP. On January 20, 2017, Columbia Property Trust granted 193,535 shares of common stock to employees, net of 17,938 shares withheld to settle the related tax liability, under the LTIP for 2016 performance, of which 25% vested upon grant; the remaining shares will vest ratably, with the passage of time, on January 31, 2018, 2019, and 2020. Employees receive quarterly dividends related to their entire grant, including the unvested shares, on each dividend payment date. For 2017, Columbia Property Trust modified the structure of awards granted under the LTIP to include both time-based awards and performance-based awards for all participants. For the 2017 time-based awards, Columbia Property Trust issued 139,825 shares of common stock to employees, which will vest ratably on each anniversary of the grant date over the next four years. For the 2017 performance-based awards, Columbia Property Trust granted 193,219 restricted share units (the "Performance-Based RSUs"), of which 75% will vest at the conclusion of a three-year performance period, and the remaining 25% will vest one year later. In addition, Columbia Property Trust granted 45,076 and 92,585 one-time transitional Performance-Based RSUs, which will fully vest at the conclusion of one-year and two-year performance periods, respectively. Upon reaching a predefined performance threshold, the payout of the Performance-Based RSUs will range from 50% to 150% of the Performance-Based RSUs granted, depending on Columbia Property Trust’s total stockholder return relative to the FTSE NAREIT Equity Office Index. All awards are expensed over the vesting period based on their estimated fair values. The fair-value of time-based awards is estimated using the closing stock price on the grant date; and fair values of performance-based awards are estimated using a Monte Carlo valuation method. The 2018 LTIP awards are consistent with the 2017 LTIP awards. On January 1, 2018, Columbia Property Trust granted 128,486 shares of time-based stock awards to employees, which will vest ratably on each anniversary of the grant over the next four years. On January 1, 2018, Columbia Property Trust granted 176,702 Performance-Based RSUs, of which 75% will vest at the conclusion of a three-year performance period, and the remaining 25% will vest one year later. Consistent with the 2017 plan, the payout of the 2018 Performance-Based RSUs will be determined based on Columbia Property Trust’s total shareholder return relative to the FTSE NAREIT Equity Office Index. F-27 Below is a summary of the shares of stock issued under the LTIP for the years ended December 31, 2017, 2016, and 2015: Unvested shares as of January 1, 2015 Granted Vested Forfeited Unvested shares as of December 31, 2015 Granted Vested Forfeited Unvested shares as of December 31, 2016 Granted Vested Forfeited Unvested shares as of December 31, 2017 Shares (in thousands) Weighted-Average, Grant-Date Fair Value(1) 104 123 (74) (2) 151 247 (138) (4) 256 333 (193) $ $ $ $ $ $ $ $ $ $ $ (7) $ 389 (2) $ 24.82 24.40 24.60 24.56 24.59 21.79 23.32 21.90 22.62 21.59 22.42 21.81 21.85 (1) Columbia Property Trust determined the weighted-average grant-date fair value using the market closing price on the date of the grant. (2) As of December 31, 2017, Columbia Property Trust expects approximately 370,000 of the 389,000 unvested shares to ultimately vest, assuming a forfeiture rate of 5%, which was determined based on peer company data, adjusted for the specifics of the LTIP. A summary of the activity for the Performance-Based RSUs under the LTIP follows: Unvested performance-based share awards as of December 31, 2016 Granted Vested Forfeited Unvested performance-based share awards as of December 31, 2017 Performance-Based RSU Awards (in thousands) Weighted-Average, Grant-Date Fair Value(1) — 331 — $ $ $ (2) $ 329 (2) $ — 18.78 — 19.01 18.78 (1) Columbia Property Trust determined the weighted-average grant-date fair value using the estimated fair value on the date of grant. (2) As of December 31, 2017, Columbia Property Trust expects approximately 303,000 of the 329,000 unvested performance-based restricted share units to ultimately vest, assuming a forfeiture rate of 8%, which was determined based on peer company data, adjusted for the specifics of the LTIP. F-28 Director Stock Grants In May 2017, Columbia Property Trust began paying its directors' equity retainers on an annual basis for the ensuing period. From January 2014 through January 3, 2017, Columbia Property Trust paid these equity retainers in quarterly installments. The equity retainers vest at the time of grant. A summary of these grants, made under the LTIP, follows: Date of Grant 2017 Director Grants: January 3, 2017 May 2, 2017 November 27, 2017(1) 2016 Director Grants: January 4, 2016 April 1, 2016 July 1, 2016 October 3, 2016 2015 Director Grants: January 2, 2015 April 1, 2015 July 1, 2015 October 1, 2015 Shares Weighted-Average Grant-Date Fair Value 8,279 33,581 1,596 7,439 8,120 8,158 7,727 5,850 4,995 4,144 4,571 $ $ $ $ $ $ $ $ $ $ $ 21.58 22.57 23.07 23.00 21.89 21.52 22.19 25.75 27.16 24.84 23.40 (1) In November 2017, a new director was appointed to the board of directors of Columbia Property Trust. The new director received a pro-rated annual equity retainer grant at appointment. Stock-Based Compensation Expense Columbia Property Trust incurred stock-based compensation expense related to the following events (in thousands): Amortization of unvested LTIP awards Future employee awards(1) Issuance of shares to independent directors Total stock-based compensation expense 2017 2016 2015 $ $ 4,098 $ 2,856 $ 2,509 973 1,006 696 7,580 $ 4,558 $ 1,699 1,353 496 3,548 (1) Reflects amortization of LTIP awards for service during the current period, for which shares will be issued in future periods. These expenses are included in general and administrative expenses in the accompanying consolidated statements of operations. There were $8.1 million and $3.2 million of unrecognized compensation costs related to unvested awards under the LTIP as of December 31, 2017 and December 31, 2016, respectively. This amount will be amortized over the respective vesting period, ranging from one year to four years at the time of grant. Effective in 2017, Columbia Property Trust changed from an LTIP measured over a one-year performance period to an LTIP measured over a three-year performance period and, as a result, has issued additional unvested shares in 2017. Independent Director Stock Option Plan Columbia Property Trust previously maintained an independent director stock option plan that provides for grants of stock to be made to independent directors of Columbia Property Trust (the "Director Plan"). A total of 25,000 shares were authorized and reserved for issuance under the Director Plan, which was suspended in April of 2008. Under the Director Plan, options were granted upon appointment to the board and on each annual meeting date. All options granted under the Director Plan have expired. F-29 A summary of stock option activity under the Director Plan during 2017, 2016, and 2015, follows: Outstanding as of December 31, 2014 Granted Expired Number Exercise Price Exercisable 3,875 $ 48.00 3,875 — (2,000) Outstanding as of December 31, 2015 1,875 $ 48.00 1,875 Granted Expired — (500) Outstanding as of December 31, 2016 1,375 $ 48.00 1,375 Granted Expired — (1,375) Outstanding as of December 31, 2017 — $ — — Columbia Property Trust has evaluated the fair values of options granted under the Director Plan using the Black-Scholes-Merton model and concluded that such values are insignificant as of the end of the period presented. 9. Operating Leases Columbia Property Trust's real estate assets are leased to tenants under operating leases for which the terms vary, including certain provisions to extend the lease agreement, options for early terminations, subject to specified penalties, and other terms and conditions as negotiated. Columbia Property Trust retains substantially all of the risks and benefits of ownership of the real estate assets leased to tenants. Amounts required as security deposits vary depending upon the terms of the respective leases and the creditworthiness of the tenant; however, such deposits generally are not significant. Therefore, exposure to credit risk exists to the extent that the receivables exceed this amount. Security deposits related to tenant leases are included in accounts payable, accrued expenses, and accrued capital expenditures in the accompanying consolidated balance sheets. Based on 2017 annualized lease revenue, as defined, none of Columbia Property Trust's tenants represent more than 6% of Columbia Property Trust's portfolio. Tenants in business services, depository institutions, and engineering and management services represent 23%, 11%, and 8%, respectively, of Columbia Property Trust's annualized lease revenue. Columbia Property Trust's properties are located primarily in New York, San Francisco, Washington, D.C., and Atlanta. As of December 31, 2017, approximately 38%, 28%, and 14% of Columbia Property Trust's office properties are located in New York, San Francisco, and Washington, D.C., respectively, based on annualized lease revenue. The future minimum rental income from Columbia Property Trust's investment in real estate assets under noncancelable operating leases, excluding lease incentives, as of December 31, 2017, is as follows (in thousands): 2018 2019 2020 2021 2022 Thereafter Total $ $ 231,641 247,774 243,053 207,919 192,322 1,440,917 2,563,626 As of December 31, 2017, Columbia Property Trust has recognized lease incentive obligations of $66.3 million, which will be amortized against rental income over the 30-year life of the related lease. F-30 10. Supplemental Disclosures of Noncash Investing and Financing Activities Outlined below are significant noncash investing and financing activities for the years ended December 31, 2017, 2016, and 2015 (in thousands): Investment in real estate funded with other assets Deposits applied to sales of real estate Other assets assumed upon acquisition Other liabilities assumed upon acquisition Real estate assets transferred to unconsolidated joint venture Mortgage note transferred to unconsolidated joint venture Other assets transferred to unconsolidated joint venture Other liabilities transferred to unconsolidated joint venture Discount on issuance of bonds payable Amortization of discounts (premiums) on debt $ $ $ $ $ $ $ $ $ $ Market value adjustment to interest rate swaps that qualify for hedge accounting treatment $ Accrued capital expenditures and deferred lease costs Accrued dividends payable Common stock issued to employees and directors, and amortized (net of income tax witholdings) $ $ $ 11. Income Taxes Years Ended December 31, 2017 2016 2015 311 10,000 1,014 268 558,122 $ $ $ $ $ — $ 43,700 21,347 $ $ — $ 180 1,786 25,069 23,961 5,764 $ $ $ $ $ 1,442 $ 27,000 — $ — $ — $ — $ — $ — $ — $ 1,309 267 1,553 15,042 36,727 3,388 $ $ $ $ $ $ — 7,785 4,765 531,696 325,000 37,987 20,595 494 (18) (1,570) 19,324 37,354 3,548 Columbia Property Trust's income tax basis net income during 2017, 2016, and 2015 (in thousands) follows: GAAP basis financial statement net income attributable to the common stockholders of Columbia Property Trust, Inc. Increase (Decrease) in Net Income Resulting From: Depreciation and amortization expense for financial reporting purposes in excess of amounts for income tax purposes Rental income accrued for financial reporting purposes in excess of amounts for income tax purposes Net amortization of above-/below-market lease intangibles for financial reporting purposes less than amounts for income tax purposes Gain on interest rate swaps that do not qualify for hedge accounting treatment for financial reporting purposes in excess of amounts for income tax purposes Bad debt expense for financial reporting purposes less than amounts for income tax purposes Income from unconsolidated joint ventures for financial reporting purchases in excess of amount for income tax purposes Gains or losses on disposition of real property for financial reporting purposes that are more favorable than amounts for income tax purposes 2017 2016 2015 $ 176,041 $ 84,281 $ 44,619 33,918 34,569 81,559 (38,426) (26,900) (13,409) (6,091) (9,013) — (31) 13,902 — (261) — (6,626) (2,633) 5 — (126,770) (71,701) (117,857) Other expenses for financial reporting purposes in excess of amounts for income tax purposes 11,331 Income tax basis net income, prior to dividends-paid deduction $ 63,874 $ (2,707) 8,268 $ 14,342 — F-31 As of December 31, 2017, the tax basis carrying value of Columbia Property Trust's total assets was approximately $4.6 billion. For income tax purposes, distributions to common stockholders are characterized as ordinary income, capital gains, or as a return of a stockholder's invested capital. Columbia Property Trust's distributions per common share are summarized as follows: Ordinary income Capital gains Return of capital Total 2017 2016 2015 58.5% —% 41.5% 100.0% 5.6% —% 94.4% 100.0% —% —% 100.0% 100.0% As of December 31, 2017, returns for the calendar years 2013 through 2017 remain subject to examination by U.S. or various state tax jurisdictions. No provisions for federal income taxes have been made in the accompanying consolidated financial statements, other than the provisions relating to the TRS Entities, as Columbia Property Trust made distributions in excess of taxable income for the periods presented. Columbia Property Trust is subject to certain state and local taxes related to property operations in certain locations, which have been provided for in the accompanying consolidated financial statements. The income taxes recorded by the TRS Entities for the years ended December 31, 2017, 2016, and 2015, are as follows: Federal income tax State income tax Total income tax Years Ended December 31, 2017 2016 2015 $ $ 188 38 226 $ $ 255 21 276 $ $ 17 25 42 As of December 31, 2017, Columbia Property Trust had a deferred tax asset of $205,000, and as of December 31, 2016, Columbia Property Trust had a deferred tax liability of $22,000, which are included in prepaid expenses and other assets in the accompanying consolidated balance sheets. F-32 12. Earnings Per Share The basic and diluted earnings-per-share computations and net income have been reduced for the dividends paid on unvested shares related to the LTIP grants, as described in Note 8, Equity. The following table reconciles the numerator for the basic and diluted earnings-per-share computations shown on the consolidated statements of income (in thousands): Net income Distributions paid on unvested shares Net income used to calculate basic and diluted earnings per share 2017 2016 2015 $ $ 176,041 (337) 175,704 $ $ 84,281 (314) 83,967 $ $ 44,619 (185) 44,434 The following table reconciles the denominator for the basic and diluted earnings-per-share computations shown on the consolidated statements of income (in thousands): Weighted-average common shares – basic Plus Incremental Weighted-Average Shares From Time-Vested Conversions Less Assumed Share Repurchases: Previously granted LTIP awards, unvested Future LTIP awards 2017 2016 2015 120,795 123,130 124,757 116 248 58 40 33 57 Weighted-average common shares – diluted 121,159 123,228 124,847 F-33 13. Quarterly Results (Unaudited) Presented below is a summary of the unaudited quarterly financial information for the years ended December 31, 2017 and 2016 (in thousands, except per-share data): Revenues Net income Net income per share – basic Net income per share – diluted Dividends declared per share Revenues Net income Net income per share – basic Net income per share – diluted Dividends declared per share First Quarter 82,156 74,722 (1) 0.61 0.61 0.20 $ $ $ $ $ 2017 Second Quarter Third Quarter Fourth Quarter 74,857 1,133 0.01 0.01 0.20 $ 60,362 $ 101,534 (2) 0.84 $ $ $ 0.84 0.20 $ $ $ $ $ 71,625 (1,348) (0.01) (0.01) 0.20 2016 First Quarter Second Quarter Third Quarter Fourth Quarter 126,579 $ 127,930 $ 113,266 $ 105,768 6,697 0.05 0.05 0.30 $ $ $ $ 13,286 (3) 0.11 0.11 0.30 $ $ $ $ 36,898 (4) 0.30 0.30 0.30 $ $ $ $ 27,400 (5) 0.22 0.22 0.30 $ $ $ $ $ $ $ $ $ $ (1) Net income for the first quarter of 2017 includes gains on sales of real estate assets of $73.2 million related to the sales of real estate assets as described in Note 3, Real Estate Transactions. (2) Net income for the third quarter of 2017 includes gains on sales of real estate assets of $102.4 million related to the sales of real estate assets as described in Note 3, Real Estate Transactions. (3) Net income for the second quarter of 2016 includes an early termination payment at 222 East 41st Street of $6.2 million. (4) Net income for the third quarter of 2016 includes gains on sales of real estate assets of $50.4 million related to the sales of real estate assets as described in Note 3, Real Estate Transactions; partially offset by losses on early extinguishment of debt of $18.9 million related to the early repayment of the 2018 Bonds Payable. (5) Net income for the fourth quarter of 2016 includes gains on sales of real estate assets of $22.2 million related to the sales of real estate assets as described in Note 3, Real Estate Transactions. F-34 14. Segment Information Columbia Property Trust establishes operating segments at the property level, and aggregates individual properties into reportable segments for geographic locations in which Columbia Property Trust has significant investments. Columbia Property Trust considers geographic location when evaluating its portfolio composition, and in assessing the ongoing operations and performance of its properties. As of December 31, 2017, Columbia Property Trust had the following reportable segments: New York, San Francisco, Atlanta, Washington, D.C., Boston, Los Angeles, and all other office markets. The all other office markets reportable segment consists of properties in similar low-barrier-to-entry geographic locations in which Columbia Property Trust does not have a substantial presence and does not plan to make further investments. During the periods presented, there have been no material inter-segment transactions. Net operating income ("NOI") is a non-GAAP financial measure and is not considered a measure of operating results or cash flows from operations under GAAP. NOI is the primary performance measure reviewed by management to assess operating performance of properties and is calculated by deducting operating expenses from operating revenues. Operating revenues include rental income, tenant reimbursements, hotel income, and other property income; and operating expenses include property and hotel operating costs. The NOI performance metric consists of only revenues and expenses directly related to real estate rental operations. NOI reflects property acquisitions and dispositions, occupancy levels, rental rate increases or decreases, and the recoverability of operating expenses. NOI, as Columbia Property Trust calculates it, may not be directly comparable to similarly titled, but differently calculated, measures for other REITs. Asset information and capital expenditures by segment are not reported because Columbia Property Trust does not use these measures to assess performance. Depreciation and amortization expense, along with other expense and income items, are not allocated among segments. The following table presents property operating revenues by geographic reportable segment (in thousands): New York(1) San Francisco(2) Atlanta Washington, D.C.(3) Boston Los Angeles All other office markets Total office segments Hotel Corporate(4) For the Years Ended December 31, 2017 2016 2015 $ 123,280 $ 105,550 37,803 36,934 11,559 7,462 21,460 344,048 1,328 579 117,235 $ 109,995 36,742 33,024 11,796 7,443 152,858 469,093 22,958 397 $ 345,955 $ 492,448 $ 97,643 112,696 35,715 62,766 20,895 7,588 207,367 544,670 24,583 267 569,520 Total (1) (2) (3) Includes operating revenues for 49.5% of 114 Fifth Avenue based on Columbia Property Trust's ownership interest, from July 6, 2017 through December 31, 2017. These operating revenues are included in equity in income (loss) of unconsolidated joint ventures in the accompanying consolidated statements of operations. Includes operating revenues for 100.0% of 333 Market Street and University Circle through July 5, 2017. Includes operating revenues for 77.5% of 333 Market Street and University Circle based on Columbia Property Trust's ownership interest, from July 6, 2017 through December 31, 2017, which are included in equity in income (loss) of unconsolidated joint ventures in the accompanying consolidated statements of operations. Includes operating revenues for 100.0% of Market Square through October 28, 2015. Includes operating revenues for 51.0% of the Market Square buildings based on Columbia Property Trust's ownership interest, from October 28, 2015 through December 31, 2017; and includes operating revenues for 55.0% of 1800 M Street based on Columbia Property Trust's ownership interest, from October 11, 2017 through December 31, 2017, which are included in equity in income (loss) of unconsolidated joint ventures in the accompanying consolidated statements of operations. (4) The amounts for 2016 and 2015 have been adjusted to conform with 2017 presentation by removing asset and property management fee income. F-35 A reconciliation of GAAP revenues to operating revenues is presented below (in thousands): Total revenues Operating revenues included in income (loss) from unconsolidated joint ventures(1) Asset and property management fee income(2) Total property operating revenues $ $ For the Years Ended December 31, 2017 2016 2015 289,000 $ 473,543 $ 566,065 60,737 (3,782) 21,027 (2,122) 345,955 $ 492,448 $ 4,060 (605) 569,520 (1) Columbia Property Trust records its interest in properties held through unconsolidated joint ventures using the equity method of accounting, and reflects its interest in the operating revenues of these properties in income (loss) from unconsolidated joint ventures in the accompanying consolidated statements of operations. (2) See Note 4, Unconsolidated Joint Ventures, of the accompanying consolidated financial statements. The following table presents net operating income by geographic reportable segment (in thousands): New York(1) San Francisco(2) Atlanta Washington, D.C.(3) Boston Los Angeles All other office markets Total office segments Hotel Corporate(4) Total For the Years Ended December 31, 2017 2016 2015 $ 73,893 $ 70,038 $ 76,163 33,603 18,496 5,380 4,529 18,550 230,614 (913) (826) 80,529 32,939 16,372 5,114 4,523 92,756 302,271 3,988 (158) $ 228,875 $ 306,101 $ 54,692 83,826 31,912 36,958 12,519 4,853 129,199 353,959 4,593 (586) 357,966 (1) (2) (3) Includes net operating income for 49.5% of 114 Fifth Avenue based on Columbia Property Trust's ownership interest, from July 6, 2017 through December 31, 2017. This net operating income is included in equity in income (loss) of unconsolidated joint ventures in the accompanying consolidated statements of operations. Includes net operating income for 100.0% of 333 Market Street and University Circle through July 5, 2017. Includes net operating income for 77.5% of 333 Market Street and University Circle based on Columbia Property Trust's ownership interest, from July 6, 2017 through December 31, 2017, which is included in equity in income (loss) of unconsolidated joint ventures in the accompanying consolidated statements of operations. Includes net operating income for 100.0% of Market Square through October 28, 2015. Includes net operating income for 51.0% of the Market Square buildings based on Columbia Property Trust's ownership interest, from October 28, 2015 through December 31, 2017; and includes net operating income for 55.0% of 1800 M Street based on Columbia Property Trust's ownership interest, from October 11, 2017 through December 31, 2017. This net operating income is included in equity in income (loss) of unconsolidated joint ventures in the accompanying consolidated statements of operations. (4) The amounts for 2016 and 2015 have been adjusted to conform with 2017 presentation by removing asset and property management fee income. F-36 A reconciliation of GAAP net income to NOI is presented below (in thousands): For the Years Ended December 31, 2017 2016 2015 $ 176,041 $ 84,281 $ Net income Depreciation Amortization General and administrative – corporate General and administrative – joint venture Real estate acquisition costs Net interest expense Interest income from development authority bonds Interest rate swap valuation adjustment Interest expense associated with interest rate swap Settlement of interest rate swap Loss on early extinguishment of debt Income tax expense Asset and property management fee income Adjustments included in loss from unconsolidated joint venture 80,394 32,403 34,966 1,454 — 58,187 (7,200) — — — 325 (213) (3,782) 31,818 108,543 56,775 33,876 — — 67,538 (7,200) — — — 18,997 445 (2,122) 17,293 (72,325) 306,101 $ 44,619 131,490 87,128 29,683 — 3,675 85,265 (7,200) (2,634) 2,642 1,102 3,149 378 (605) 3,134 (23,860) 357,966 Gains on sales of real estate assets Net operating income $ (175,518) 228,875 $ 15. Financial Information for Parent Guarantor, Other Guarantor Subsidiaries, and Non-Guarantor Subsidiaries The 2026 Bonds Payable and the 2025 Bonds Payable (see Note 6, Bonds Payable) were issued by Columbia Property Trust OP, and are guaranteed by Columbia Property Trust. In accordance with SEC Rule 3-10(c), Columbia Property Trust includes herein condensed consolidating financial information in lieu of separate financial statements of the subsidiary issuer (Columbia Property Trust OP), as defined in the bond indentures, because all of the following criteria are met: (1) the subsidiary issuer (Columbia Property Trust OP) is 100% owned by the parent company guarantor (Columbia Property Trust); (2) the guarantees are full and unconditional; and (3) no other subsidiary of the parent company guarantor (Columbia Property Trust) guarantees the 2025 Bonds Payable or the 2018 Bonds Payable. Columbia Property Trust uses the equity method with respect to its investment in subsidiaries included in its condensed consolidating financial statements. Columbia Property Trust has corrected the presentation of intercompany cash transfers between the REIT Parent and its subsidiaries in the consolidating statements of cash flow. Instead of showing one amount for intercompany transfers between each entity group, intercompany transfers are broken out by cash flow type (i.e. operating, investing, and financing) for all periods presented, consistent with the equity method of accounting. All such changes are eliminated in consolidation, and therefore do not impact Columbia Property Trust's consolidated financial statement totals. Management has concluded that the effect of this correction is not material to the consolidated financial statements. This change had the following impact to the condensed consolidating statement of cash flows for the years ended December 31, 2016: increase to operating cash flows for the parent and issuer of $53.1 million and $136.7 million, respectively; and increase (decrease) in investing cash flows for the parent, issuer, and non-guarantors of $(281.8) million, $568.5 million and $603.7 million, respectively; and increase (decrease) in financing cash flows for the parent, issuer, and non-guarantors of $228.7 million, $(705.2) million, and $(603.7) million, respectively. This change had the following impact to the condensed consolidating statement of cash flows for the years ended December 31, 2015: increase to operating cash flows for the parent of $15.7 million; and increase (decrease) in investing cash flows for the parent, issuer, and non-guarantors of $1,045.9 million, $(145.3) million and $(468.0) million, respectively; and increase (decrease) in financing cash flows for the parent, issuer, and non-guarantors of $(1,061.6) million, $145.3 million and $468.0 million, respectively. The impact to individual financial statement captions within the condensed consolidating statement of cash flows is footnoted below. Set forth below are Columbia Property Trust's condensed consolidating balance sheets as of December 31, 2017 and 2016 (in thousands), as well as its condensed consolidating statements of operations and its condensed consolidating statements of F-37 comprehensive income for 2017, 2016, and 2015 (in thousands); and its condensed consolidating statements of cash flows for 2017, 2016, and 2015 (in thousands). Condensed Consolidating Balance Sheets (in thousands) As of December 31, 2017 Columbia Property Trust (Parent) Columbia Property Trust OP (the Issuer) Non- Guarantors Consolidating Adjustments Columbia Property Trust (Consolidated) Assets: Real Estate Assets, at Cost: Land $ — $ — $ 825,208 $ — $ (4,070,825) $ 4,511,539 825,208 2,063,419 199,260 44,742 3,132,629 943,242 9,567 — 2,128 92,235 27,683 42,959 141,096 120,000 971,185 693,756 125,002 23,961 — 18,481 27,218 120,000 1,979,603 2,531,936 4,511,539 Buildings and improvements, net Intangible lease assets, net Construction in progress Total real estate assets Investment in unconsolidated joint ventures Cash and cash equivalents Investment in subsidiaries Tenant receivables, net of allowance Straight-line rent receivable 2,110 2,061,309 — — 199,260 44,742 2,110 3,130,519 — — — — — 692 943,241 5,079 2,238,577 1,186,594 — — 30 — Prepaid expenses and other assets 317,364 336,598 Intangible lease origination costs, net Deferred lease costs, net Investment in development authority bonds Total assets Liabilities: Line of credit and notes payable, net Bonds payable, net Accounts payable, accrued expenses, and accrued capital expenditures $ $ Dividends payable Due to affiliates Deferred income Intangible lease liabilities, net Obligations under capital leases $ $ — — — — — — 2,556,633 $ 2,473,652 — $ — 732 23,961 — 4 — — 899,168 693,756 10,325 — — 81 — — Total liabilities 24,697 1,603,330 — — — — — — (3,425,171) — — (645,654) — — — (643,310) $ — (4) — (2,340) — — — (645,654) 1 3,796 — 2,098 92,235 19,375 42,959 141,096 120,000 3,552,079 715,327 — 113,949 — 2,340 18,396 27,218 120,000 997,230 $ $ Equity: Total equity 2,531,936 870,322 2,554,849 (3,425,171) Total liabilities and equity $ 2,556,633 $ 2,473,652 $ 3,552,079 $ (4,070,825) $ F-38 Condensed Consolidating Balance Sheets (in thousands) As of December 31, 2016 Columbia Property Trust (Parent) Columbia Property Trust OP (the Issuer) Non- Guarantors Consolidating Adjustments Columbia Property Trust (Consolidated) Assets: Real Estate Assets, at Cost: Land $ — $ — $ 751,351 $ — $ 751,351 2,121,150 193,311 36,188 412,506 3,514,506 127,346 216,085 — 7,163 64,811 24,275 54,279 125,799 120,000 45,529 721,466 692,972 131,028 36,727 — 19,694 33,375 120,000 41,763 1,797,025 2,502,768 4,299,793 Building and improvements, net Intangible lease assets, net Construction in progress Real estate assets held for sale, net Total real estate assets Investment in unconsolidated joint ventures Cash and cash equivalents Investment in subsidiaries Tenant receivables, net of allowance Straight-line rent receivable — — — — — — 174,420 2,047,922 — — 219 — — 34,956 35,175 127,346 16,509 1,782,752 — — Prepaid expenses and other assets 317,153 262,216 $ $ Intangible lease origination costs, net Deferred lease costs, net Investment in development authority bonds Other assets held for sale, net Total assets Liabilities: Lines of credit and notes payable, net Bonds payable, net Accounts payable, accrued expenses, and accrued capital expenditures Dividends payable Due to affiliates Deferred income Intangible lease liabilities, net Obligations under capital leases Liabilities held for sale, net $ $ — — — — — — — 3,767 2,539,495 $ 2,227,765 — $ — — 36,727 — — — — — 447,643 692,972 10,395 — 58 — — — 2,651 2,120,931 193,311 36,188 377,550 3,479,331 — 25,156 — 7,163 64,811 15,593 54,279 125,799 120,000 41,814 3,933,946 704,585 — 120,633 — 1,534 19,694 33,375 120,000 177,497 $ $ Total liabilities 36,727 1,153,719 1,177,318 Equity: — — — — — — — (3,830,674) — — (570,687) — — — (52) (430,762) $ — — — (1,592) — — — (138,385) (570,739) Total equity 2,502,768 1,074,046 2,756,628 (3,830,674) Total liabilities and equity $ 2,539,495 $ 2,227,765 $ 3,933,946 $ (4,401,413) $ F-39 (4,401,413) $ 4,299,793 Consolidating Statements of Operations (in thousands) Revenues: Rental income Tenant reimbursements Hotel income Asset and property management fee income Other property income Expenses: Property operating costs Hotel operating costs Asset and Property Management Fee Expenses: Related-party Other Depreciation Amortization General and administrative – corporate General and administrative – joint ventures Other Income (Expense): Interest expense Interest and other income Loss on early extinguishment of debt Income (loss) before income taxes, unconsolidated entities, and gains on sales of real estate assets Income tax expense Income (loss) from unconsolidated entities Income before gains on sales of real estate assets Gains on sales of real estate assets For the Year Ended December 31, 2017 Columbia Property Trust (Parent) Columbia Property Trust OP (the Issuer) Non- Guarantors Consolidating Adjustments Columbia Property Trust (Consolidated) $ — $ 51 $ 257,368 $ (360) $ 257,059 — — 1,908 — 1,908 — — — — — — 259 — 259 1,649 — 16,535 — 16,535 18,184 — (60) — — — (9) 308 — 3 — 869 5 9,048 — 10,233 (10,242) (44,259) 7,762 — (36,497) (46,739) (1) 23,571 1,339 1,874 3,327 287,479 87,857 2,089 — 918 79,525 32,398 25,674 1,454 229,915 57,564 (38,238) 7,213 (325) (31,350) 26,214 214 — — — (18) (378) (360) — (3) — — — (15) — (378) — 21,981 (21,981) — — — — 157,857 198,620 — (353,826) 176,041 — 151,880 11,050 26,428 164,468 (353,826) — 23,511 1,339 3,782 3,309 289,000 87,805 2,089 — 918 80,394 32,403 34,966 1,454 240,029 48,971 (60,516) 9,529 (325) (51,312) (2,341) 213 2,651 523 175,518 176,041 Net income $ 176,041 $ 162,930 $ 190,896 $ (353,826) $ F-40 Consolidating Statements of Operations (in thousands) For the Year Ended December 31, 2016 Columbia Property Trust (Parent) Columbia Property Trust OP (the Issuer) Non- Guarantors Consolidating Adjustments Columbia Property Trust (Consolidated) $ — $ 3,622 $ 362,947 $ (383) $ 366,186 Revenues: Rental income Tenant reimbursements Hotel income Asset and property management fee income Other property income Expenses: Property operating costs Hotel operating costs Asset and Property Management Fee Expenses: Related-party Other Depreciation Amortization General and administrative – corporate Other Income (Expense): Interest expense Interest and other income Loss on early extinguishment of debt Income (loss) before income taxes, unconsolidated entities, and gains on sales of real estate assets Income tax expense Income (loss) from unconsolidated entities Income before gains (loss) on sales of real estate assets Gains (loss) on sales of real estate assets — — 574 406 980 — — — — — — 154 154 826 — 14,268 — 14,268 15,094 — 1,963 — — — 5,585 3,209 — 154 — 2,760 364 8,566 15,053 (9,468) (46,797) 15,272 (18,987) (50,512) (59,980) (20) 67,807 22,661 1,548 12,804 467,767 152,142 18,686 — 1,415 105,783 56,411 25,408 359,845 107,922 (50,302) 7,238 (10) (43,074) 64,848 (425) — — — (406) (789) (383) — (154) — — — (252) (789) — 29,490 (29,490) — — — — 69,187 113,105 — (189,853) 84,281 53,105 — — 64,423 72,325 (189,853) — 69,770 22,661 2,122 12,804 473,543 154,968 18,686 — 1,415 108,543 56,775 33,876 374,263 99,280 (67,609) 7,288 (18,997) (79,318) 19,962 (445) (7,561) 11,956 72,325 84,281 Net income $ 84,281 $ 53,105 $ 136,748 $ (189,853) $ F-41 Consolidating Statements of Operations (in thousands) For the Year Ended December 31, 2015 Columbia Property Trust (Parent) Columbia Property Trust OP (the Issuer) Non- Guarantors Consolidating Adjustments Columbia Property Trust (Consolidated) $ — $ 2,662 $ 433,763 $ (377) $ 436,048 Revenues: Rental income Tenant reimbursements Hotel income Asset and property management fee income Other property income Expenses: Property operating costs Hotel operating costs Asset and Property Management Fee Expenses: Related-party Other Depreciation Amortization General and administrative – corporate Acquisition expenses Other Income (Expense): Interest expense Interest and other income Loss on interest rate swaps Loss on early extinguishment of debt Income before income taxes, unconsolidated entities, and gains on sales of real estate assets Income tax expense Income (loss) from unconsolidated entities Income before gains on sales of real estate assets Gains on sales of real estate assets — — 171 — 171 — — — — — — 152 — 152 19 — 14,141 — — 14,141 14,160 — 30,459 44,619 — 1,316 — — — 3,978 3,065 — 100 — 2,571 237 8,754 11 14,738 (10,760) (44,919) 12,565 (1,101) (1,050) (34,505) (45,265) (25) 59,165 13,875 (19) 98,339 24,309 434 5,781 562,626 185,390 19,615 — 1,816 128,919 86,891 21,010 3,664 447,305 115,321 (67,076) 7,247 (9) (2,099) (61,937) 53,384 (353) — — — (333) (710) (377) — (100) — — — (233) — (710) — 26,699 (26,699) — — — — — — (90,766) 53,031 23,879 (90,766) — 99,655 24,309 605 5,448 566,065 188,078 19,615 — 1,816 131,490 87,128 29,683 3,675 461,485 104,580 (85,296) 7,254 (1,110) (3,149) (82,301) 22,279 (378) (1,142) 20,759 23,860 44,619 Net income $ 44,619 $ 13,856 $ 76,910 $ (90,766) $ F-42 Consolidating Statements of Comprehensive Income (in thousands) For the Year Ended December 31, 2017 Columbia Property Trust (Parent) Columbia Property Trust OP (the Issuer) Non- Guarantors Consolidating Adjustments Columbia Property Trust (Consolidated) Net income Market value adjustment to interest rate swap Comprehensive income $ $ 176,041 $ 162,930 $ 190,896 $ (353,826) $ 176,041 1,786 1,786 — (1,786) 177,827 $ 164,716 $ 190,896 $ (355,612) $ 1,786 177,827 For the Year Ended December 31, 2016 Columbia Property Trust (Parent) Columbia Property Trust OP (the Issuer) Non- Guarantors Consolidating Adjustments Columbia Property Trust (Consolidated) Net income Market value adjustment to interest rate swap Comprehensive income $ $ 84,281 $ 53,105 $ 136,748 $ (189,853) $ 84,281 1,553 1,553 — (1,553) 85,834 $ 54,658 $ 136,748 $ (191,406) $ 1,553 85,834 For the Year Ended December 31, 2015 Columbia Property Trust (Parent) Columbia Property Trust OP (the Issuer) Non- Guarantors Consolidating Adjustments Columbia Property Trust (Consolidated) Net income Market value adjustment to interest rate swap Settlement of interest rate swap Comprehensive income $ $ 44,619 $ 13,856 $ 76,910 $ (90,766) $ 44,619 (1,570) 1,102 (1,570) 1,102 — — 1,570 (1,102) 44,151 $ 13,388 $ 76,910 $ (90,298) $ (1,570) 1,102 44,151 F-43 Consolidating Statements of Cash Flows (in thousands) For the Year Ended December 31, 2017 Columbia Property Trust (Parent) Columbia Property Trust OP (the Issuer) Non- Guarantors Consolidating Adjustments Columbia Property Trust (Consolidated) Cash flows from operating activities $ 3,966 $ (46,268) $ 104,226 $ — $ 61,924 Cash Flows From Investing Activities: Net proceeds from the sale of real estate Investment in real estate and related assets Investment in unconsolidated joint ventures Distributions in excess of earnings from unconsolidated joint ventures — — — — Investments in subsidiaries (8,671) 49,531 688,100 (2,203) (716,093) (369,043) 1,985 (97,505) — — — — — — — 106,176 737,631 (718,296) (369,043) 1,985 — Net cash provided by (used in) investing activities Cash Flows From Financing Activities: Borrowings, net of fees Repayments Redemptions of common stock Distributions Net cash provided by (used in) financing activities Net decrease in cash and cash equivalents Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period (8,671) (417,235) (27,993) 106,176 (347,723) — — (59,462) (109,561) 781,731 (331,000) — 1,342 — (202,427) — 104,834 — — — (106,176) 781,731 (533,427) (59,462) (109,561) (169,023) 452,073 (97,593) (106,176) 79,281 (173,728) (11,430) (21,360) 174,420 16,509 25,156 — — (206,518) 216,085 $ 692 $ 5,079 $ 3,796 $ — $ 9,567 F-44 Consolidating Statements of Cash Flows (in thousands) For the Year Ended December 31, 2016 Columbia Property Trust (Parent) Columbia Property Trust OP (the Issuer) Non- Guarantors Consolidating Adjustments Columbia Property Trust (Consolidated) Cash flows from operating activities $ 53,980 $ 86,846 $ 242,118 $ (189,853) $ 193,091 Cash Flows From Investing Activities: Net proceeds from the sale of real estate(1) Investment in real estate and related assets Investment in unconsolidated joint ventures Distributions from subsidiaries(2) Net cash provided by investing activities Cash Flows From Financing Activities: Borrowings, net of fees(3) Repayments(4) Prepayments to settle debt and interest rate swap(5) Redemptions of common stock Distributions(6) Net cash used in financing activities Net increase in cash and cash equivalents Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period — — — 321,911 — 613,732 (2,157) (69,750) (16,212) 568,480 — — — — — (890,391) 613,732 (71,907) (16,212) — 321,911 550,111 543,982 (890,391) 525,613 — — — (53,986) (148,474) 780,577 (1,051,000) (17,921) — (347,073) — (44,460) — — — — — — (733,171) 1,080,244 780,577 (1,095,460) (17,921) (53,986) (148,474) (202,460) (635,417) (777,631) 1,080,244 (535,264) 173,431 1,540 989 14,969 8,469 16,687 — — 183,440 32,645 $ 174,420 $ 16,509 $ 25,156 $ — $ 216,085 (1) Net proceeds from the sale of real estate increased (decreased) by $(603.7) million and $603.7 million for the parent and non-guarantors, respectively. (2) Distributions from subsidiaries increased (decreased) by $321.9 million, $568.5 million, and $(890.4) million for the parent, issuer, and eliminations, respectively. (3) Borrowings, net of fees, increased (decreased) by $(781.4) million and $781.4 million for the parent and issuer, respectively. (4) Repayments increased (decreased) by $1,090.0 million, $(1,051.0) million, and $(39.0) million for the parent, issuer, and non-guarantors respectively. (5) Prepayments to settle debt and interest rate swap increased (decreased) by $17.9 million and $(17.9) million for the parent and issuer, respectively. (6) Distributions (increased) decreased by $(347.1) million, $(733.2) million, and $1,080.3 million, for the issuer, non-guarantors, and eliminations, respectively. The intercompany transfers, net line item is no longer presented based on the changes to the other line items described herein. F-45 For the Year Ended December 31, 2015 Columbia Property Trust (Parent) Columbia Property Trust OP (the Issuer) Non- Guarantors Consolidating Adjustments Columbia Property Trust (Consolidated) Cash flows from operating activities $ 15,743 $ (50,601) $ 273,655 $ (15,717) $ 223,080 Cash Flows From Investing Activities: Net proceeds from the sale of real estate(1) Investments in real estate and related assets(2) Investment in unconsolidated joint ventures Investments in subsidiaries(3) Net cash used in investing activities Cash Flows From Financing Activities: Borrowings, net of fees(3) Repayments Prepayments to settle debt and interest rate swap Redemptions of common stock Distributions(4) Net cash provided by (used in) financing activities Net increase (decrease) in cash and cash equivalents Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period — — — (4,615) (4,615) — — — (17,057) (112,570) — — 596,734 (1,167,933) (5,500) (628,393) (633,893) 2,223,778 (1,518,000) (1,102) — (15,717) — — (571,199) — (336,512) (2,063) — 633,008 — — — 633,008 633,008 — — — — (617,291) 596,734 (1,167,933) (5,500) — (576,699) 2,223,778 (1,854,512) (3,165) (17,057) (112,570) (129,627) 688,959 294,433 (617,291) 236,474 (118,499) 119,488 4,465 10,504 (3,111) 19,798 — — (117,145) 149,790 $ 989 $ 14,969 $ 16,687 $ — $ 32,645 (1) Net proceeds from the sales of real estate increased (decreased) by $(72.4) million, $(524.4) million, and $596.7 million for the parent, issuer, and non-guarantors, respectively. (2) (3) Investments in real estate and related assets increased (decrease) by $57.2 million, $1,007.5 million, and $(1,064.7) million for the parent, issuer, and non-guarantors, respectively. Investments in subsidiaries increased (decreased) by $1,061.1 million, $(628.4) million, and $(432.7) million for the parent, issuer, and eliminations, respectively. (4) Distributions (increased) decreased by $(15.7) million, $633.0 million, and $(617.3) million, for the issuer, non-guarantors, and eliminations, respectively. The intercompany transfers, net line item is no longer presented based on the changes to the other line items described herein. 16. Subsequent Events Columbia Property Trust has evaluated subsequent events in connection with the preparation of its consolidated financial statements and notes thereto included in this report on Form 10-K and noted the following items in addition to those disclosed elsewhere in this report: • • • On February 7, 2018, the board of directors declared dividends for the first quarter of 2018 in the amount of $0.20 per share, payable on March 15, 2018, to stockholders of record on March 1, 2018. On February 1, 2018, Columbia Property Trust sold an additional 22.5% interest in University Circle and 333 Market Street to its joint venture partner, Allianz, as described in Note 3, Real Estate Transactions. On January 5, 2018, Columbia Property Trust paid an aggregate amount of $24.0 million in dividends for the fourth quarter of 2017 to shareholders of record on December 1, 2017. 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C D , n o t g n i h s a W Y N , k r o Y w e N I E L C R C Y T I S R E V N U I T E E R T S T E K R A M 3 3 3 E V A H T F I F 4 1 1 T E E R T S M 0 0 8 1 r e v o d e z i t r o m a e r a s e l b i g n a t n i e s a e l , m r e t e s a e l r o e f i l c i m o n o c e f o r e t r o h s e h t r e v o d e z i t r o m a e r a s t n e m e v o r p m i t n a n e t , y l l a r e n e G . s s a l c y b s t e s s a e h t f o s e v i l l u f e s u e h t r e v o d o h t e m e n i l - t h g i a r t s e h t g n i s u d e z i t r o m a r o d e t a i c e r p e d e r a s t e s s a t s u r T y t r e p o r P a i b m u l o C . s r a e y 5 4 - 0 4 r e v o d e t a i c e r p e d e r a s g n i d l i u b d n a , s r a e y 5 2 - 5 r e v o d e t a i c e r p e d e r a s t n e m e v o r p m i g n i d l i u b , m r e t e s a e l e v i t c e p s e r e h t 0 . 0 2 1 $ f o t n u o m a e h t n i s e s a e l l a t i p a c r e d n u s n o i t a g i l b o n i a t r e c d n a s d n o b n i s t n e m t s e v n i d e r i u q c a t s u r T y t r e p o r P a i b m u l o C , g n i d l i u B e k a l n e l G e e r h T e h t f o n o i t i s i u q c a e h t f o t l u s e r a s A . e t o n e g a g t r o m n o i l l i m 7 . 3 2 $ a o t t c e j b u s s i g n i d l i u B e k a l n e l G e n O e h T . n o i l l i b 3 3 9 . 3 $ y l e t a m i x o r p p a s i s e s o p r u p x a t e m o c n i l a r e d e f r o f s t n e m e v o r p m i d n a s g n i d l i u b d n a d n a l d e t a d i l o s n o c f o t s o c e t a g e r g g a e h T . n o i l l i b 5 2 0 . 2 $ y l e t a m i x o r p p a s i s e s o p r u p x a t e m o c n i l a r e d e f r o f s e r u t n e v t n i o j d e t a d i l o s n o c n u y b d l e h , t b e d f o t e n , s t n e m e v o r p m i d n a s g n i d l i u b d n a d n a l e h t f o % 0 0 1 f o t s o c e t a g e r g g a e h T . e s a e l d n u o r g d i a p - e r p , m r e t - g n o l a o t t c e j b u s d e n w o s i e u n e v A n o t g n i t n u H 6 1 1 . s t e s s a e t a r o p r o c f o n o i l l i m 2 . 3 $ s e d u l c x e s t e s s a e t a t s e l a e r d e t a d i l o s n o C . e s a e l d n u o r g m r e t - g n o l a o t t c e j b u s d e n w o s i y t r e p o r P . n o i l l i m ) a ( ) b ( ) c ( ) d ( ) e ( ) f ( ) g ( 8 8 3 , 7 6 $ 5 9 2 , 9 4 9 , 1 $ 0 9 6 , 8 2 5 , 1 $ 5 0 6 , 0 2 4 $ ) 7 7 9 , 8 4 1 ( $ 2 7 2 , 8 9 0 , 2 $ 2 3 9 , 7 7 6 , 1 $ 0 4 3 , 0 2 4 S T E S S A E T A T S E L A E R D E T A D I L O S N O C N U L A T O T 1 - S . c n I , t s u r T y t r e p o r P a i b m u l o C n o i t a z i t r o m A d n a n o i t a i c e r p e D d e t a l u m u c c A d n a s t e s s A e t a t s E l a e R – I I I e l u d e h c S ) s d n a s u o h t n i ( 7 1 0 2 , 1 3 r e b m e c e D n o i t c u r t s n o C n o i t a z i t r o m A f o e t a D d e t a l u m u c c A n o i t a i c e r p e D d n a t a d e i r r a C h c i h W t a t n u o m A s s o r G 7 1 0 2 , 1 3 r e b m e c e D ) a ( l a t o T d n a s g n i d l i u B s t n e m e v o r p m I d n a L s t s o C d e z i l a t i p a C t n e u q e s b u S o t n o i t i s i u q c A l a t o T s t s o C l a i t i n I d n a s g n i d l i u B s t n e m e v o r p m I d n a L - m u c n E s e c n a r b - r e n w O % p i h s n o i t a c o L n o i t p i r c s e D  Columbia Property Trust, Inc. Schedule III – Real Estate Assets and Accumulated Depreciation and Amortization (in thousands) Real Estate: Balance at beginning of year Additions to/improvements of real estate Sale/transfer of real estate Write-offs of building and tenant improvements Write-offs of intangible assets(3) Write-offs of fully depreciated assets Balance at end of year Accumulated Depreciation and Amortization: Balance at beginning of year Depreciation and amortization expense Sale/transfer of real estate Write-offs of tenant improvements Write-offs of intangible assets(3) Write-offs of fully depreciated assets For the Years Ended December 31, 2017 2016 2015 $ 4,243,531 $ 4,948,605 $ 5,050,482 $ $ 698,567 (1,285,915) (1) (3,087) (14,432) (26,370) 3,612,294 729,025 97,732 (302,157) (1) (1,406) (14,197) (26,370) $ $ 41,848 (673,164) (5,559) (30,435) (37,764) 4,243,531 863,724 140,823 (203,248) (4,336) (30,174) (37,764) $ $ 1,162,068 (1,188,083) (2) (1,552) (12,614) (61,696) 4,948,605 973,920 183,492 (221,481) (2) (948) (9,563) (61,696) Balance at end of year $ 482,627 $ 729,025 $ 863,724 (1) (2) Includes the transfer of 100% of University Circle and 333 Market Street to unconsolidated joint ventures, in which Columbia Property Trust currently owns a 77.5% interest. Includes the transfer of 100% of the Market Square Buildings to an unconsolidated joint venture, in which Columbia Property Trust currently owns a 51% interest. (3) Consists of write-offs of intangible lease assets related to lease restructurings, amendments, and terminations. S-2 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in Registration Statement No. 333-217720 on Form S-8 of our reports dated February 15, 2018, relating to the consolidated financial statements and financial statement schedule of Columbia Property Trust, Inc. and subsidiaries (the “Company”), and the effectiveness of the Company’s internal control over financial reporting, appearing in this Annual Report on Form 10-K of Columbia Property Trust, Inc. and subsidiaries for the year ended December 31, 2017. Exhibit 23.1 /s/ Deloitte & Touche LLP Atlanta, Georgia February 15, 2018 EXHIBIT 31.1 PRINCIPAL EXECUTIVE OFFICER CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 (18 U.S.C. 1350) I, E. Nelson Mills, certify that: 1. 2. 3. 4. I have reviewed this annual report on Form 10-K of Columbia Property Trust, Inc. for the year ended December 31, 2017; Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report; Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report; The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have: a. b. c. d. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared; Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, 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; Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and 5. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions): a. b. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting. Dated: February 15, 2018 By: /s/ E. Nelson Mills E. Nelson Mills Principal Executive Officer EXHIBIT 31.2 PRINCIPAL FINANCIAL OFFICER CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 (18 U.S.C. 1350) I, James A. Fleming, certify that: 1. 2. 3. 4. I have reviewed this annual report on Form 10-K of Columbia Property Trust, Inc. for the year ended December 31, 2017; Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report; Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report; The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have: a. b. c. d. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared; Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, 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; Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and 5. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions): a. b. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting. Dated: February 15, 2018 By: /s/ James A. Fleming James A. Fleming Principal Financial Officer EXHIBIT 32.1 CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER AND PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 (18 U.S.C. 1350) In connection with the Annual Report of Columbia Property Trust, Inc. (the “Registrant”) on Form 10-K for the year ended December 31, 2017, as filed with the Securities and Exchange Commission (the “Report”), the undersigned, E. Nelson Mills, Principal Executive Officer of the Registrant, and James A. Fleming, Principal Financial Officer of the Registrant, hereby certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. 1350) that, to the best of our knowledge and belief: (1) (2) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, and The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant. /s/ E. NELSON MILLS E. Nelson Mills Principal Executive Officer February 15, 2018 /s/ JAMES A. FLEMING James A. Fleming Principal Financial Officer February 15, 2018 (cid:60)(cid:53)(cid:73)(cid:74)(cid:84)(cid:1)(cid:81)(cid:66)(cid:72)(cid:70)(cid:1)(cid:74)(cid:79)(cid:85)(cid:70)(cid:79)(cid:85)(cid:74)(cid:80)(cid:79)(cid:66)(cid:77)(cid:77)(cid:90)(cid:1)(cid:77)(cid:70)(cid:71)(cid:85)(cid:1)(cid:67)(cid:77)(cid:66)(cid:79)(cid:76)(cid:62) (cid:60)(cid:53)(cid:73)(cid:74)(cid:84)(cid:1)(cid:81)(cid:66)(cid:72)(cid:70)(cid:1)(cid:74)(cid:79)(cid:85)(cid:70)(cid:79)(cid:85)(cid:74)(cid:80)(cid:79)(cid:66)(cid:77)(cid:77)(cid:90)(cid:1)(cid:77)(cid:70)(cid:71)(cid:85)(cid:1)(cid:67)(cid:77)(cid:66)(cid:79)(cid:76)(cid:62) Board of Directors Senior Management Company Information E. Nelson Mills President and Chief Executive Officer E. Nelson Mills President and Chief Executive Officer Inquiries: 1170 Peachtree Street Suite 600 Atlanta, GA 30309 Independent Accountants Deloitte & Touche LLP Atlanta, Georgia Corporate Counsel King & Spalding LLP Atlanta, Georgia Annual Meeting The 2018 Annual Meeting of Stockholders of Columbia Property Trust, Inc., will be held at the Conrad New York at 102 North End Avenue in New York, New York, at 1:30 pm ET on May 14, 2018. Investor Relations Address inquiries to Investor Relations at the Company’s Atlanta office or by email to ir@columbia.reit. Shares Listed New York Stock Exchange Symbol: CXP Stockholder Services & Transfer Agent/Registrar American Stock Transfer & Trust Company, LLC 6201 15th Avenue Brooklyn, NY 11219 855.347.0042 Internet Access to SEC Filings A copy of the Company’s Annual Report on Form 10-K for the year ended December 31, 2017, which has been filed with the U.S. Securities and Exchange Commission (SEC), forms part of this annual report. All reports filed electronically by Columbia Property Trust with the SEC, including the Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, and Current Reports on Form 8-K, are accessible at www.columbia.reit. James A. Fleming Executive Vice President and Chief Financial Officer Linda M. Bolan Senior Vice President, Property Management and Sustainability David S. Dowdney Senior Vice President, Head of Leasing Wendy W. Gill Senior Vice President, Corporate Operations and Chief Accounting Officer Kevin A. Hoover Senior Vice President, Portfolio Management and Transactions Amy C. Tabb Senior Vice President, Business Development John L. Dixon Chairman of the Board; Former President and Director, Pacific Select Group, LLC Carmen M. Bowser Former Managing Vice President, Capital One Bank, New York Charles R. Brown* Chairman, CRB Realty Associates Richard W. Carpenter Director, Carpenter Properties, L.P. David B. Henry Chairman and Co-Founder, Peaceable Street Capital; Former Chief Executive Officer, Kimco Realty Corporation Murray J. McCabe Managing Partner, Blum Capital Partners, L.P. Constance B. Moore Former Chief Executive Officer, BRE Properties, Inc. Michael S. Robb Former Executive Vice President, Real Estate Division, Pacific Life Insurance Company George W. Sands Former Partner, KPMG LLP Thomas G. Wattles Former Executive Chairman, DCT Industrial Trust, Inc. * Mr. Brown will retire from the board as of our 2018 annual meeting. We are grateful for his service to Columbia. 249 W. 17th Street NEW YORK A E S L E H C I C O L U M B A P R O P E R T Y T R U S T | 2 0 1 7 A N N U A L R E P O R T ® NYSE: CXP | www.columbia.reit 002-CORPREPT1801 

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