10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

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

For the quarterly period ended September 30, 2018

OR

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

For the transition period from                  to                 

Commission File Number: 1-12675 (Kilroy Realty Corporation)

Commission File Number: 000-54005 (Kilroy Realty, L.P.)

KILROY REALTY CORPORATION

KILROY REALTY, L.P.

(Exact name of registrant as specified in its charter)

Kilroy Realty Corporation	Maryland	95-4598246
	(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
Kilroy Realty, L.P.	Delaware	95-4612685
	(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
12200 W. Olympic Boulevard, Suite 200, Los Angeles, California 90064
(Address of principal executive offices) (Zip Code)
(310) 481-8400
(Registrant's telephone number, including area code)
N/A
(Former name, former address and former fiscal year, if changed since last report)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    

Kilroy Realty Corporation    Yes  þ    No   o

Kilroy Realty, L.P.         Yes  þ    No   o

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted 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 such files).    

Kilroy Realty Corporation     Yes  þ    No   o

Kilroy Realty, L.P.         Yes  þ    No   o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Kilroy Realty Corporation
Large accelerated filer     þ	Accelerated filer     o
Non-accelerated filer     o	Smaller reporting company     o
Emerging growth company    o 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. o
Kilroy Realty, L.P.
Large accelerated filer     o	Accelerated filer     o
Non-accelerated filer     þ	Smaller reporting company     o
Emerging growth company    o 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. o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    

Kilroy Realty Corporation Yes  o     No   þ

Kilroy Realty, L.P. Yes  o     No   þ

As of October 19, 2018, 100,746,988shares of Kilroy Realty Corporation common stock, par value $.01 per share, were outstanding.

EXPLANATORY NOTE

This report combines the quarterly reports on Form 10-Q for the period ended September 30, 2018 of Kilroy Realty Corporation and Kilroy Realty, L.P. Unless stated otherwise or the context otherwise requires, references to “Kilroy Realty Corporation” or the “Company,” “we,” “our,” and “us” mean Kilroy Realty Corporation, a Maryland corporation, and its controlled and consolidated subsidiaries, and references to “Kilroy Realty, L.P.” or the “Operating Partnership” mean Kilroy Realty, L.P., a Delaware limited partnership and its controlled and consolidated subsidiaries.

The Company is a real estate investment trust, or REIT, and the general partner of the Operating Partnership. As of September 30, 2018, the Company owned an approximate 98.0% common general partnership interest in the Operating Partnership. The remaining approximate 2.0% common limited partnership interests are owned by non-affiliated investors and certain directors and officers of the Company. As the sole general partner of the Operating Partnership, the Company exercises exclusive and complete discretion over the Operating Partnership’s day-to-day management and control and can cause it to enter into certain major transactions, including acquisitions, dispositions, and refinancings and cause changes in its line of business, capital structure and distribution policies.

There are a few differences between the Company and the Operating Partnership that are reflected in the disclosures in this Form 10-Q. We believe it is important to understand the differences between the Company and the Operating Partnership in the context of how the Company and the Operating Partnership operate as an interrelated, consolidated company. The Company is a REIT, the only material asset of which is the partnership interests it holds in the Operating Partnership. As a result, the Company generally does not conduct business itself, other than acting as the sole general partner of the Operating Partnership, issuing equity from time to time and guaranteeing certain debt of the Operating Partnership. The Company itself is not directly obligated under any indebtedness, but generally guarantees all of the debt of the Operating Partnership. The Operating Partnership owns substantially all of the assets of the Company either directly or through its subsidiaries, conducts the operations of the Company’s business and is structured as a limited partnership with no publicly traded equity. Except for net proceeds from equity issuances by the Company, which the Company generally contributes to the Operating Partnership in exchange for units of partnership interest, the Operating Partnership generates the capital required by the Company’s business through the Operating Partnership’s operations, by the Operating Partnership’s incurrence of indebtedness or through the issuance of units of partnership interest.

Noncontrolling interests, stockholders’ equity and partners’ capital are the main areas of difference between the consolidated financial statements of the Company and those of the Operating Partnership. The common limited partnership interests in the Operating Partnership are accounted for as partners’ capital in the Operating Partnership’s financial statements and, to the extent not held by the Company, as noncontrolling interests in the Company’s financial statements. The Operating Partnership’s financial statements reflect the noncontrolling interest in Kilroy Realty Finance Partnership, L.P., a Delaware limited partnership (the “Finance Partnership”). This noncontrolling interest represents the Company’s 1% indirect general partnership interest in the Finance Partnership, which is directly held by Kilroy Realty Finance, Inc., a wholly owned subsidiary of the Company. The differences between stockholders’ equity, partners’ capital and noncontrolling interest result from the differences in the equity issued by the Company and the Operating Partnership, and in the Operating Partnership’s noncontrolling interest in the Finance Partnership.

We believe combining the quarterly reports on Form 10-Q of the Company and the Operating Partnership into this single report results in the following benefits:

• Combined reports better reflect how management and the analyst community view the business as a single operating unit;

• Combined reports enhance investors’ understanding of the Company and the Operating Partnership by enabling them to view the business as a whole and in the same manner as management;

• Combined reports are more efficient for the Company and the Operating Partnership and result in savings in time, effort and expense; and

• Combined reports are more efficient for investors by reducing duplicative disclosure and providing a single document for their review.

To help investors understand the significant differences between the Company and the Operating Partnership, this report presents the following separate sections for each of the Company and the Operating Partnership:

• consolidated financial statements;

• the following notes to the consolidated financial statements:

◦ Note 6, Stockholders’ Equity of the Company;

◦ Note 8, Partners’ Capital of the Operating Partnership;

i

◦ Note 13, Net Income Available to Common Stockholders Per Share of the Company;

◦ Note 14, Net Income Available to Common Unitholders Per Unit of the Operating Partnership;

◦ Note 15, Supplemental Cash Flow Information of the Company; and

◦ Note 16, Supplemental Cash Flow Information of the Operating Partnership;

• “Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

◦ —Liquidity and Capital Resources of the Company;” and

◦ —Liquidity and Capital Resources of the Operating Partnership.”

This report also includes separate sections under Part I, Item 4. Controls and Procedures and separate Exhibit 31 and Exhibit 32 certifications for the Company and the Operating Partnership to establish that the Chief Executive Officer and the Chief Financial Officer of each entity have made the requisite certifications and that the Company and Operating Partnership are compliant with Rule 13a-15 or Rule 15d-15 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and 18 U.S.C. §1350.

ii

KILROY REALTY CORPORATION AND KILROY REALTY, L.P.

QUARTERLY REPORT FOR THE THREE AND NINE MONTHS ENDED SEPTEMBER 30, 2018

TABLE OF CONTENTS

		Page
	PART I – FINANCIAL INFORMATION
Item 1.	FINANCIAL STATEMENTS OF KILROY REALTY CORPORATION	1
	Consolidated Balance Sheets as of September 30, 2018 (unaudited) and December 31, 2017	1
	Consolidated Statements of Operations for the Three and Nine Months ended September 30, 2018 and 2017 (unaudited)	2
	Consolidated Statements of Equity for the Nine Months ended September 30, 2018 and 2017 (unaudited)	3
	Consolidated Statements of Cash Flows for the Nine Months ended September 30, 2018 and 2017 (unaudited)	4
Item 1.	FINANCIAL STATEMENTS OF KILROY REALTY, L.P.	5
	Consolidated Balance Sheets as of September 30, 2018 (unaudited) and December 31, 2017	5
	Consolidated Statements of Operations for the Three and Nine Months ended September 30, 2018 and 2017 (unaudited)	6
	Consolidated Statements of Capital for the Nine Months ended September 30, 2018 and 2017 (unaudited)	7
	Consolidated Statements of Cash Flows for the Nine Months ended September 30, 2018 and 2017 (unaudited)	8
	Notes to Unaudited Consolidated Financial Statements	9
Item 2.	MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS	26
Item 3.	QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK	53
Item 4.	CONTROLS AND PROCEDURES (KILROY REALTY CORPORATION AND KILROY REALTY, L.P.)	54
	PART II – OTHER INFORMATION
Item 1.	LEGAL PROCEEDINGS	55
Item 1A.	RISK FACTORS	55
Item 2.	UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS	55
Item 3.	DEFAULTS UPON SENIOR SECURITIES	55
Item 4.	MINE SAFETY DISCLOSURES	55
Item 5.	OTHER INFORMATION	55
Item 6.	EXHIBITS	56
SIGNATURES		57

PART I – FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS (UNAUDITED) OF KILROY REALTY CORPORATION

KILROY REALTY CORPORATION

CONSOLIDATED BALANCE SHEETS

(in thousands, except share data)

	September 30, 2018			December 31, 2017
ASSETS	(unaudited)
REAL ESTATE ASSETS (Note 2):
Land and improvements	$	1,127,100		$	1,076,172
Buildings and improvements	5,056,050			4,908,797
Undeveloped land and construction in progress	2,146,430			1,432,808
Total real estate assets held for investment	8,329,580			7,417,777
Accumulated depreciation and amortization	(1,411,529		)	(1,264,162		)
Total real estate assets held for investment, net	6,918,051			6,153,615
CASH AND CASH EQUIVALENTS	86,517			57,649
RESTRICTED CASH	—			9,149
MARKETABLE SECURITIES (Note 11)	23,353			20,674
CURRENT RECEIVABLES, NET (Note 3)	17,519			16,926
DEFERRED RENT RECEIVABLES, NET (Note 3)	261,003			246,391
DEFERRED LEASING COSTS AND ACQUISITION-RELATED INTANGIBLE ASSETS, NET	183,118			183,728
PREPAID EXPENSES AND OTHER ASSETS, NET (Note 4)	72,675			114,706
TOTAL ASSETS	$	7,562,236		$	6,802,838
LIABILITIES AND EQUITY
LIABILITIES:
Secured debt, net (Notes 5 and 11)	$	336,866		$	340,800
Unsecured debt, net (Notes 5 and 11)	2,207,049			2,006,263
Unsecured line of credit (Notes 5, 11 and 17)	330,000			—
Accounts payable, accrued expenses and other liabilities	360,674			249,637
Accrued dividends and distributions (Note 17)	47,411			43,448
Deferred revenue and acquisition-related intangible liabilities, net	149,059			145,890
Rents received in advance and tenant security deposits	56,258			56,484
Total liabilities	3,487,317			2,842,522
COMMITMENTS AND CONTINGENCIES (Note 10)
EQUITY:
Stockholders’ Equity (Note 6):
Common stock, $.01 par value, 150,000,000 shares authorized, 100,746,988 and 98,620,333 shares issued and outstanding, respectively	1,007			986
Additional paid-in capital	3,965,405			3,822,492
Distributions in excess of earnings	(161,654		)	(122,685		)
Total stockholders’ equity	3,804,758			3,700,793
Noncontrolling Interests (Notes 1 and 7):
Common units of the Operating Partnership	76,486			77,948
Noncontrolling interests in consolidated property partnerships	193,675			181,575
Total noncontrolling interests	270,161			259,523
Total equity	4,074,919			3,960,316
TOTAL LIABILITIES AND EQUITY	$	7,562,236		$	6,802,838

See accompanying notes to consolidated financial statements.

1

KILROY REALTY CORPORATION

CONSOLIDATED STATEMENTS OF OPERATIONS

(Unaudited; in thousands, except share and per share data)

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
REVENUES
Rental income	$	162,288		$	159,954		$	489,674		$	475,527
Tenant reimbursements	21,754			19,665			60,471			58,228
Other property income	2,520			1,915			6,311			7,685
Total revenues	186,562			181,534			556,456			541,440
EXPENSES
Property expenses	35,163			33,070			99,401			97,615
Real estate taxes	17,462			16,371			52,421			50,878
Provision for bad debts (Note 12)	1,338			1,036			6,714			2,743
Ground leases	1,579			1,562			4,726			4,751
General and administrative expenses	19,277			14,514			56,599			43,750
Depreciation and amortization	62,700			62,567			189,421			185,737
Total expenses	137,519			129,120			409,282			385,474
OTHER (EXPENSES) INCOME
Interest income and other net investment gain/loss (Note 11)	342			1,526			1,147			3,629
Interest expense (Note 5)	(11,075		)	(16,151		)	(37,285		)	(51,476		)
Total other (expenses) income	(10,733		)	(14,625		)	(36,138		)	(47,847		)
INCOME FROM OPERATIONS BEFORE GAINS ON SALES OF REAL ESTATE	38,310			37,789			111,036			108,119
Net gain on sale of land	—			449			—			449
Gains on sales of depreciable operating properties	—			37,250			—			39,507
NET INCOME	38,310			75,488			111,036			148,075
Net income attributable to noncontrolling common units of the Operating Partnership	(691		)	(1,394		)	(2,008		)	(2,633		)
Net income attributable to noncontrolling interests in consolidated property partnerships	(3,219		)	(2,984		)	(10,833		)	(9,359		)
Total income attributable to noncontrolling interests	(3,910		)	(4,378		)	(12,841		)	(11,992		)
NET INCOME ATTRIBUTABLE TO KILROY REALTY CORPORATION	34,400			71,110			98,195			136,083
Preferred dividends	—			(808		)	—			(5,774		)
Original issuance costs of redeemed preferred stock and preferred units	—			(3,744		)	—			(7,589		)
Total preferred dividends	—			(4,552		)	—			(13,363		)
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$	34,400		$	66,558		$	98,195		$	122,720
Net income available to common stockholders per share – basic (Note 13)	$	0.34		$	0.67		$	0.97		$	1.24
Net income available to common stockholders per share – diluted (Note 13)	$	0.33		$	0.67		$	0.97		$	1.23
Weighted average common shares outstanding – basic (Note 13)	100,676,778			98,352,139			99,711,312			98,008,780
Weighted average common shares outstanding – diluted (Note 13)	101,228,334			98,911,612			100,208,645			98,591,048
Dividends declared per common share	$	0.455		$	0.425		$	1.335		$	1.225

See accompanying notes to consolidated financial statements.

2

KILROY REALTY CORPORATION

CONSOLIDATED STATEMENTS OF EQUITY

(Unaudited; in thousands, except share and per share/unit data)

				Common Stock											Total Stock- holders’ Equity			Noncontrolling Interests			Total Equity
	Preferred Stock			Number of Shares		Common Stock			Additional Paid-in Capital			Retained Earnings / (Distributions in Excess of Earnings)
BALANCE AS OF DECEMBER 31, 2016	$	192,411		93,219,439		$	932		3,457,649			$	(107,997	)	$	3,542,995		$	216,322		$	3,759,317
Net income												136,083			136,083			11,992			148,075
Redemption of Series G and H Preferred stock	(192,411		)									(7,589		)	(200,000		)				(200,000		)
Issuance of common stock				4,427,500		44			308,768						308,812						308,812
Issuance of share-based compensation awards									5,291						5,291						5,291
Non-cash amortization of share-based compensation									19,013						19,013						19,013
Exercise of stock options				282,000		4			12,047						12,051						12,051
Settlement of restricted stock units for shares of common stock				317,848		3			(3		)				—						—
Repurchase of common stock, stock options and restricted stock units				(168,881	)	(2		)	(12,984		)				(12,986		)				(12,986		)
Exchange of common units of the Operating Partnership				304,350		3			10,936						10,939			(10,939		)	—
Contributions from noncontrolling interests in consolidated property partnerships															—			250			250
Distributions to noncontrolling interests in consolidated property partnerships															—			(12,234		)	(12,234		)
Adjustment for noncontrolling interest									(3,171		)				(3,171		)	3,171			—
Preferred dividends												(5,774		)	(5,774		)				(5,774		)
Dividends declared per common share and common unit ($1.225 per share/unit)												(123,390		)	(123,390		)	(2,545		)	(125,935		)
BALANCE AS OF SEPTEMBER 30, 2017	$	—		98,382,256		$	984		$	3,797,546		$	(108,667	)	$	3,689,863		$	206,017		$	3,895,880

	Common Stock											Total Stock- holders’ Equity			Noncontrolling Interests			Total Equity
	Number of Shares		Common Stock			Additional Paid-in Capital			Distributions in Excess of Earnings
BALANCE AS OF DECEMBER 31, 2017	98,620,333		$	986		$	3,822,492		$	(122,685	)	$	3,700,793		$	259,523		$	3,960,316
Net income									98,195			98,195			12,841			111,036
Issuance of common stock (Note 6)	1,817,195		18			130,726						130,744						130,744
Issuance of share-based compensation awards						3,298						3,298						3,298
Non-cash amortization of share-based compensation						24,678						24,678						24,678
Exercise of stock options	1,000		—			41						41						41
Settlement of restricted stock units for shares of common stock	488,354		4			(4		)				—						—
Repurchase of common stock, stock options and restricted stock units	(231,800	)	(2		)	(16,551		)				(16,553		)				(16,553		)
Exchange of common units of the Operating Partnership	51,906		1			1,961						1,962			(1,962		)	—
Contributions from noncontrolling interests in consolidated property partnerships												—			8,273			8,273
Distributions to noncontrolling interests in consolidated property partnerships												—			(7,006		)	(7,006		)
Adjustment for noncontrolling interest						(1,236		)				(1,236		)	1,236			—
Dividends declared per common share and common unit ($1.335 per share/unit)									(137,164		)	(137,164		)	(2,744		)	(139,908		)
BALANCE AS OF SEPTEMBER 30, 2018	100,746,988		$	1,007		$	3,965,405		$	(161,654	)	$	3,804,758		$	270,161		$	4,074,919

See accompanying notes to consolidated financial statements.

3

KILROY REALTY CORPORATION

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited; in thousands)

	Nine Months Ended September 30,
	2018			2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$	111,036		$	148,075
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of real estate assets and leasing costs	186,242			181,875
Depreciation of non-real estate furniture, fixtures and equipment	3,179			3,862
Increase in provision for bad debts (Note 12)	6,714			2,743
Non-cash amortization of share-based compensation awards	18,901			13,617
Non-cash amortization of deferred financing costs and debt discounts and premiums	816			2,398
Non-cash amortization of net below market rents	(7,647		)	(6,026		)
Gain on sale of depreciable operating properties	—			(39,507		)
Gain on sale of land	—			(449		)
Non-cash amortization of deferred revenue related to tenant-funded tenant improvements	(13,680		)	(12,394		)
Straight-line rents	(16,293		)	(25,537		)
Net change in other operating assets	(9,163		)	(16,970		)
Net change in other operating liabilities	37,110			24,855
Net cash provided by operating activities	317,215			276,542
CASH FLOWS FROM INVESTING ACTIVITIES:
Expenditures for acquisition of undeveloped land (Note 2)	(311,299		)	—
Expenditures for development properties and undeveloped land	(311,347		)	(270,839		)
Expenditures for acquisition of operating properties (Note 2)	(111,029		)	—
Expenditures for operating properties	(107,825		)	(61,875		)
Net proceeds received from dispositions	—			182,492
Net decrease (increase) in acquisition-related deposits	21,000			(30,490		)
Proceeds received from repayment of note receivable (Note 4)	15,100			—
Net cash used in investing activities	(805,400		)	(180,712		)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings on unsecured revolving credit facility (Note 5)	645,000			70,000
Repayments on unsecured revolving credit facility (Note 5)	(285,000		)	(10,000		)
Borrowings on unsecured debt (Note 5)	120,000			—
Principal payments on secured debt	(2,670		)	(5,740		)
Proceeds from the issuance of unsecured debt (Note 5)	50,000			250,000
Repayments of unsecured debt	—			(189,000		)
Financing costs	(2,278		)	(7,480		)
Net proceeds from issuance of common stock (Note 6)	130,744			308,812
Redemption of Series G and H Preferred stock	—			(200,000		)
Repurchase of common stock and restricted stock units	(16,553		)	(12,986		)
Proceeds from exercise of stock options	41			12,051
Distributions to noncontrolling interests in consolidated property partnerships	(7,014		)	(12,234		)
Contributions from noncontrolling interests in consolidated property partnerships	8,273			250
Dividends and distributions paid to common stockholders and common unitholders	(132,639		)	(297,993		)
Dividends and distributions paid to preferred stockholders and preferred unitholders	—			(7,409		)
Net cash provided by (used in) financing activities	507,904			(101,729		)
Net increase (decrease) in cash and cash equivalents and restricted cash	19,719			(5,899		)
Cash and cash equivalents and restricted cash, beginning of period	66,798			250,129
Cash and cash equivalents and restricted cash, end of period	$	86,517		$	244,230

See accompanying notes to consolidated financial statements.

4

ITEM 1: FINANCIAL STATEMENTS (UNAUDITED) OF KILROY REALTY, L.P.

KILROY REALTY, L.P.

CONSOLIDATED BALANCE SHEETS

(in thousands, except unit data)

	September 30, 2018			December 31, 2017
ASSETS	(unaudited)
REAL ESTATE ASSETS (Note 2):
Land and improvements	$	1,127,100		$	1,076,172
Buildings and improvements	5,056,050			4,908,797
Undeveloped land and construction in progress	2,146,430			1,432,808
Total real estate assets held for investment	8,329,580			7,417,777
Accumulated depreciation and amortization	(1,411,529		)	(1,264,162		)
Total real estate assets held for investment, net	6,918,051			6,153,615
CASH AND CASH EQUIVALENTS	86,517			57,649
RESTRICTED CASH	—			9,149
MARKETABLE SECURITIES (Note 11)	23,353			20,674
CURRENT RECEIVABLES, NET (Note 3)	17,519			16,926
DEFERRED RENT RECEIVABLES, NET (Note 3)	261,003			246,391
DEFERRED LEASING COSTS AND ACQUISITION-RELATED INTANGIBLE ASSETS, NET	183,118			183,728
PREPAID EXPENSES AND OTHER ASSETS, NET (Note 4)	72,675			114,706
TOTAL ASSETS	$	7,562,236		$	6,802,838
LIABILITIES AND CAPITAL
LIABILITIES:
Secured debt, net (Notes 5 and 11)	$	336,866		$	340,800
Unsecured debt, net (Notes 5 and 11)	2,207,049			2,006,263
Unsecured line of credit (Notes 5, 11 and 17)	330,000			—
Accounts payable, accrued expenses and other liabilities	360,674			249,637
Accrued distributions (Note 17)	47,411			43,448
Deferred revenue and acquisition-related intangible liabilities, net	149,059			145,890
Rents received in advance and tenant security deposits	56,258			56,484
Total liabilities	3,487,317			2,842,522
COMMITMENTS AND CONTINGENCIES (Note 10)
CAPITAL:
Common units, 100,746,988 and 98,620,333 held by the general partner and 2,025,287 and 2,077,193 held by common limited partners issued and outstanding, respectively (Note 8)	3,876,142			3,773,941
Noncontrolling interests in consolidated property partnerships and subsidiaries (Note 1)	198,777			186,375
Total capital	4,074,919			3,960,316
TOTAL LIABILITIES AND CAPITAL	$	7,562,236		$	6,802,838

See accompanying notes to consolidated financial statements.

5

KILROY REALTY, L.P.

CONSOLIDATED STATEMENTS OF OPERATIONS

(Unaudited; in thousands, except unit and per unit data)

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
REVENUES
Rental income	$	162,288		$	159,954		$	489,674		$	475,527
Tenant reimbursements	21,754			19,665			60,471			58,228
Other property income	2,520			1,915			6,311			7,685
Total revenues	186,562			181,534			556,456			541,440
EXPENSES
Property expenses	35,163			33,070			99,401			97,615
Real estate taxes	17,462			16,371			52,421			50,878
Provision for bad debts (Note 12)	1,338			1,036			6,714			2,743
Ground leases	1,579			1,562			4,726			4,751
General and administrative expenses	19,277			14,514			56,599			43,750
Depreciation and amortization	62,700			62,567			189,421			185,737
Total expenses	137,519			129,120			409,282			385,474
OTHER (EXPENSES) INCOME
Interest income and other net investment gain/loss (Note 11)	342			1,526			1,147			3,629
Interest expense (Note 5)	(11,075		)	(16,151		)	(37,285		)	(51,476		)
Total other (expenses) income	(10,733		)	(14,625		)	(36,138		)	(47,847		)
INCOME FROM OPERATIONS BEFORE GAINS ON SALES OF REAL ESTATE	38,310			37,789			111,036			108,119
Net gain on sale of land	—			449			—			449
Gains on sales of depreciable operating properties	—			37,250			—			39,507
NET INCOME	38,310			75,488			111,036			148,075
Net income attributable to noncontrolling interests in consolidated property partnerships and subsidiaries	(3,317		)	(3,086		)	(11,135		)	(9,648		)
NET INCOME ATTRIBUTABLE TO KILROY REALTY, L.P.	34,993			72,402			99,901			138,427
Preferred distributions	—			(808		)	—			(5,774		)
Original issuance costs of redeemed preferred units	—			(3,744		)	—			(7,589		)
Total preferred distributions	—			(4,552		)	—			(13,363		)
NET INCOME AVAILABLE TO COMMON UNITHOLDERS	$	34,993		$	67,850		$	99,901		$	125,064
Net income available to common unitholders per unit – basic (Note 14)	$	0.34		$	0.67		$	0.97		$	1.23
Net income available to common unitholders per unit – diluted (Note 14)	$	0.33		$	0.67		$	0.96		$	1.23
Weighted average common units outstanding – basic (Note 14)	102,721,806			100,429,332			101,773,540			100,160,595
Weighted average common units outstanding – diluted (Note 14)	103,273,362			100,988,805			102,270,873			100,742,863
Dividends declared per common unit	$	0.455		$	0.425		$	1.335		$	1.225

See accompanying notes to consolidated financial statements.

6

KILROY REALTY, L.P.

CONSOLIDATED STATEMENTS OF CAPITAL

(Unaudited; in thousands, except unit and per unit data)

	Partners’ Capital								Total Partners’ Capital			Noncontrolling Interests in Consolidated Property Partnerships and Subsidiaries
	Preferred Units			Number of Common Units		Common Units									Total Capital
BALANCE AS OF DECEMBER 31, 2016	$	192,411		95,600,982		$	3,431,768		$	3,624,179		$	135,138		$	3,759,317
Net income						138,427			138,427			9,648			148,075
Redemption of Series G and H Preferred units	(192,411		)			(7,589		)	(200,000		)				(200,000		)
Issuance of common units				4,427,500		308,812			308,812						308,812
Issuance of share-based compensation awards						5,291			5,291						5,291
Non-cash amortization of share-based compensation						19,013			19,013						19,013
Exercise of stock options				282,000		12,051			12,051						12,051
Settlement of restricted stock units				317,848		—			—						—
Repurchase of common units, stock options and restricted stock units				(168,881	)	(12,986		)	(12,986		)				(12,986		)
Contributions from noncontrolling interests in consolidated property partnerships												250			250
Distributions to noncontrolling interests in consolidated property partnerships												(12,234		)	(12,234		)
Preferred distributions						(5,774		)	(5,774		)				(5,774		)
Distributions declared per common unit ($1.225 per unit)						(125,935		)	(125,935		)				(125,935		)
BALANCE AS OF SEPTEMBER 30, 2017	$	—		100,459,449		$	3,763,078		$	3,763,078		$	132,802		$	3,895,880

	Partners’ Capital					Noncontrolling Interests in Consolidated Property Partnerships and Subsidiaries
	Number of Common Units		Common Units						Total Capital
BALANCE AS OF DECEMBER 31, 2017	100,697,526		$	3,773,941		$	186,375		$	3,960,316
Net income			99,901			11,135			111,036
Issuance of common units (Note 8)	1,817,195		130,744						130,744
Issuance of share-based compensation awards			3,298						3,298
Non-cash amortization of share-based compensation			24,678						24,678
Exercise of stock options	1,000		41						41
Settlement of restricted stock units	488,354		—						—
Repurchase of common units, stock options and restricted stock units	(231,800	)	(16,553		)				(16,553		)
Contributions from noncontrolling interests in consolidated property partnerships			—			8,273			8,273
Distributions to noncontrolling interests in consolidated property partnerships						(7,006		)	(7,006		)
Distributions declared per common unit ($1.335 per unit)			(139,908		)				(139,908		)
BALANCE AS OF SEPTEMBER 30, 2018	102,772,275		$	3,876,142		$	198,777		$	4,074,919

See accompanying notes to consolidated financial statements.

7

KILROY REALTY, L.P.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited; in thousands)

	Nine Months Ended September 30,
	2018			2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$	111,036		$	148,075
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of real estate assets and leasing costs	186,242			181,875
Depreciation of non-real estate furniture, fixtures and equipment	3,179			3,862
Increase in provision for bad debts (Note 12)	6,714			2,743
Non-cash amortization of share-based compensation awards	18,901			13,617
Non-cash amortization of deferred financing costs and debt discounts and premiums	816			2,398
Non-cash amortization of net below market rents	(7,647		)	(6,026		)
Gain on sale of depreciable operating properties	—			(39,507		)
Gain on sale of land	—			(449		)
Non-cash amortization of deferred revenue related to tenant-funded tenant improvements	(13,680		)	(12,394		)
Straight-line rents	(16,293		)	(25,537		)
Net change in other operating assets	(9,163		)	(16,970		)
Net change in other operating liabilities	37,110			24,855
Net cash provided by operating activities	317,215			276,542
CASH FLOWS FROM INVESTING ACTIVITIES:
Expenditures for acquisition of undeveloped land (Note 2)	(311,299		)	—
Expenditures for development properties and undeveloped land	(311,347		)	(270,839		)
Expenditures for acquisition of operating properties (Note 2)	(111,029		)	—
Expenditures for operating properties	(107,825		)	(61,875		)
Net proceeds received from dispositions	—			182,492
Net decrease (increase) in acquisition-related deposits	21,000			(30,490		)
Proceeds received from repayment of note receivable (Note 4)	15,100			—
Net cash used in investing activities	(805,400		)	(180,712		)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings on unsecured revolving credit facility (Note 5)	645,000			70,000
Repayments on unsecured revolving credit facility (Note 5)	(285,000		)	(10,000		)
Borrowings on unsecured debt (Note 5)	120,000			—
Principal payments on secured debt	(2,670		)	(5,740		)
Proceeds from the issuance of unsecured debt (Note 5)	50,000			250,000
Repayments of unsecured debt	—			(189,000		)
Financing costs	(2,278		)	(7,480		)
Net proceeds from issuance of common units (Note 8)	130,744			308,812
Redemption of Series G and H Preferred units	—			(200,000		)
Repurchase of common units and restricted stock units	(16,553		)	(12,986		)
Proceeds from exercise of stock options	41			12,051
Distributions to noncontrolling interests in consolidated property partnerships	(7,014		)	(12,234		)
Contributions from noncontrolling interests in consolidated property partnerships	8,273			250
Distributions paid to common unitholders	(132,639		)	(297,993		)
Distributions paid to preferred unitholders	—			(7,409		)
Net cash provided by (used in) financing activities	507,904			(101,729		)
Net increase (decrease) in cash and cash equivalents and restricted cash	19,719			(5,899		)
Cash and cash equivalents and restricted cash, beginning of period	66,798			250,129
Cash and cash equivalents and restricted cash, end of period	$	86,517		$	244,230

See accompanying notes to consolidated financial statements.

8

KILROY REALTY CORPORATION AND KILROY REALTY, L.P.

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

1.    Organization, Ownership and Basis of Presentation

Organization and Ownership

Kilroy Realty Corporation (the “Company”) is a self-administered real estate investment trust (“REIT”) active in premier office and mixed-use submarkets along the West Coast. We own, develop, acquire and manage real estate assets, consisting primarily of Class A properties in the coastal regions of Greater Los Angeles, Orange County, San Diego County, the San Francisco Bay Area and Greater Seattle, which we believe have strategic advantages and strong barriers to entry. Class A real estate encompasses attractive and efficient buildings of high quality that are attractive to tenants, are well-designed and constructed with above-average material, workmanship and finishes and are well-maintained and managed. We qualify as a REIT under the Internal Revenue Code of 1986, as amended (the “Code”). The Company’s common stock is publicly traded on the New York Stock Exchange (“NYSE”) under the ticker symbol “KRC.”

We own our interests in all of our real estate assets through Kilroy Realty, L.P. (the “Operating Partnership”) and Kilroy Realty Finance Partnership, L.P. (the “Finance Partnership”). We generally conduct substantially all of our operations through the Operating Partnership. Unless stated otherwise or the context indicates otherwise, the terms “Kilroy Realty Corporation” or the “Company,” “we,” “our,” and “us” refer to Kilroy Realty Corporation and its consolidated subsidiaries and the term “Operating Partnership” refers to Kilroy Realty, L.P. and its consolidated subsidiaries. The descriptions of our business, employees and properties apply to both the Company and the Operating Partnership.

Our stabilized portfolio of operating properties was comprised of the following properties at September 30, 2018:

	Number of Buildings	Rentable Square Feet (unaudited)	Number of Tenants	Percentage  Occupied (unaudited)		Percentage Leased (unaudited)
Stabilized Office Properties	104	13,891,493	524	93.5	%	96.6	%

	Number of Buildings	Number of Units	2018 Average Occupancy (unaudited)
Stabilized Residential Property	1	200	83.3	%

Our stabilized portfolio includes all of our properties with the exception of development and redevelopment properties currently committed for construction, under construction, or in the tenant improvement phase, undeveloped land and real estate assets held for sale. We define redevelopment properties as those properties for which we expect to spend significant development and construction costs on the existing or acquired buildings pursuant to a formal plan, the intended result of which is a higher economic return on the property. We define properties in the tenant improvement phase as properties that we are developing or redeveloping where the project has reached cold shell condition and is ready for tenant improvements, which may require additional major base building construction before being placed in service. Projects in the tenant improvement phase are added to our stabilized portfolio once the project reaches the earlier of 95% occupancy or one year from the date of the cessation of major base building construction activities. Costs capitalized to construction in progress for development and redevelopment properties are transferred to land and improvements, buildings and improvements, and deferred leasing costs on our consolidated balance sheets at the historical cost of the property as the projects are placed in service.

As of September 30, 2018, the following properties were excluded from our stabilized portfolio. We did not have any redevelopment properties or properties held for sale at September 30, 2018.

	Number of Properties/Projects	Estimated Rentable Square Feet (1) (unaudited)
In-process development projects - tenant improvement (2)	2	1,150,000
In-process development projects - under construction (3)	3	956,000

________________________

(1) Estimated rentable square feet upon completion.

(2) Includes 86,000 square feet of Production, Distribution, and Repair (“PDR”) space at 100 Hooper.

(3) In addition to the estimated office and PDR rentable square feet noted above, development projects under construction also include 120,000 square feet of retail space and 608 residential units.

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KILROY REALTY CORPORATION AND KILROY REALTY, L.P.

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Our stabilized portfolio also excludes our future development pipeline, which as of September 30, 2018 was comprised of sevenpotential development sites, representing approximately 80 gross acres of undeveloped land.

As of September 30, 2018, all of our properties and development projects were owned and all of our business was conducted in the state of California with the exception of twelve office properties and one development project under construction located in the state of Washington. All of our properties and development projects are 100% owned, excluding four office properties owned by three consolidated property partnerships and a development site held by consolidated variable interest entities for future transactions intended to qualify as like-kind exchanges pursuant to Section 1031 of the Code (“Section 1031 Exchanges”).

Two of the three property partnerships, 100 First Street Member, LLC (“100 First LLC”) and 303 Second Street Member, LLC (“303 Second LLC”), each owned one office property in San Francisco, California through subsidiary REITs. As of September 30, 2018, the Company owned a 56% common equity interest in both 100 First LLC and 303 Second LLC. The third property partnership, Redwood City Partners, LLC (“Redwood LLC”) owned two office properties in Redwood City, California. As of September 30, 2018, the Company owned an approximate 93% common equity interest in Redwood LLC. The remaining interests in all three property partnerships were owned by unrelated third parties.

Ownership and Basis of Presentation

The consolidated financial statements of the Company include the consolidated financial position and results of operations of the Company, the Operating Partnership, the Finance Partnership, 303 Second LLC, 100 First LLC, Redwood LLC and all of our wholly-owned and controlled subsidiaries. The consolidated financial statements of the Operating Partnership include the consolidated financial position and results of operations of the Operating Partnership, the Finance Partnership, 303 Second LLC, 100 First LLC, Redwood LLC and all of our wholly-owned and controlled subsidiaries. All intercompany balances and transactions have been eliminated in the consolidated financial statements.

As of September 30, 2018, the Company owned an approximate 98.0% common general partnership interest in the Operating Partnership. The remaining approximate 2.0% common limited partnership interest in the Operating Partnership as of September 30, 2018 was owned by non-affiliated investors and certain of our executive officers and directors. Both the general and limited common partnership interests in the Operating Partnership are denominated in common units. Generally, the number of common units held by the Company is equivalent to the number of outstanding shares of the Company’s common stock, and the rights of all the common units to quarterly distributions and payments in liquidation mirror those of the Company’s common stockholders. The common limited partners have certain redemption rights as provided in the Operating Partnership’s Seventh Amended and Restated Agreement of Limited Partnership, as amended, the “Partnership Agreement.”

Kilroy Realty Finance, Inc., which is a wholly-owned subsidiary of the Company, is the sole general partner of the Finance Partnership and owns a 1.0% common general partnership interest in the Finance Partnership. The Operating Partnership owns the remaining 99.0% common limited partnership interest. With the exception of the Operating Partnership and our consolidated property partnerships, all of our subsidiaries are wholly-owned.

The accompanying interim financial statements have been prepared by management in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and in conjunction with the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures required for annual financial statements have been condensed or excluded pursuant to SEC rules and regulations. Accordingly, the interim financial statements do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, the accompanying interim financial statements reflect all adjustments of a normal and recurring nature that are considered necessary for a fair presentation of the results for the interim periods presented. However, the results of operations for the interim periods are not necessarily indicative of the results that may be expected for the year ending December 31, 2018. The interim financial statements for the Company and the Operating Partnership should be read in conjunction with the audited consolidated financial statements and notes thereto included in our annual report on Form 10-K for the year ended December 31, 2017.

Variable Interest Entities

The Operating Partnership is a variable interest entity (“VIE”) that is consolidated by the Company as the primary beneficiary as the Operating Partnership is a limited partnership in which the common limited partners do not have substantive kick-out or participating rights. At September 30, 2018, the consolidated financial statements of the Company included five VIEs in addition to the Operating Partnership: 100 First LLC, 303 Second LLC and three entities established during the second quarter of 2018 to facilitate potential future Section 1031 Exchanges. At September 30, 2018, the Operating Partnership was determined to be the

10

KILROY REALTY CORPORATION AND KILROY REALTY, L.P.

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

primary beneficiary of these five VIEs since the Operating Partnership had the ability to control the activities that most significantly impact each of the VIE’s economic performance. As of September 30, 2018, the five VIEs’ total assets, liabilities and noncontrolling interests included on our consolidated balance sheet were approximately $828.3 million (of which $753.8 million related to real estate held for investment), approximately $86.2 million and approximately $187.6 million, respectively. Revenues, income and net assets generated by 100 First LLC and 303 Second LLC may only be used to settle their contractual obligations, which primarily consist of operating expenses, capital expenditures and required distributions.

At December 31, 2017, the consolidated financial statements of the Company and the Operating Partnership included two VIEs in which we were deemed to be the primary beneficiary: 100 First LLC and 303 Second LLC. At December 31, 2017, the impact of consolidating the VIEs increased the Company’s total assets, liabilities and noncontrolling interests on our consolidated balance sheet by approximately $426.5 million (of which $382.1 million related to real estate held for investment), approximately $27.3 million and approximately $175.4 million, respectively.

Accounting Pronouncements Adopted January 1, 2018

Effective January 1, 2018, we adopted Financial Accounting Standards Board (“FASB”) ASU No. 2014-09 “Revenue From Contracts with Customers (Topic 606)” (“ASU 2014-09”) and the related FASB ASU Nos. 2016-12 and 2016-20, which provide practical expedients, technical corrections, and improvements for certain aspects of ASU 2014-09, on a modified retrospective basis. ASU 2014-09 establishes a single comprehensive model for entities to use in accounting for revenue from contracts with customers and supersedes most of the existing revenue recognition guidance.

We evaluated each of the Company’s revenue streams to determine the sources of revenue that are impacted by ASU 2014-09 and concluded that two revenue streams, sales of real estate and revenue from our multi-tenant parking arrangements, fall within the scope of Topic 606. We evaluated the impact of the adoption of the guidance on the timing of gain recognition for our historical dispositions and concluded there was no significant impact to our consolidated financial statements given the straight forward nature of our historical disposition transactions. We also evaluated the impact of the guidance on the timing and pattern of revenue recognition for our multi-tenant parking arrangements and determined there was no significant impact to our consolidated financial statements. We generally provide parking for our multi-tenant properties based on the prevailing market rate per parking space, which adjusts based on prevailing market rates during the tenant’s occupancy, and we recognize parking revenue as parking spaces are utilized by the tenant. Given the structure of these arrangements whereby the amount of parking revenue we recognize corresponds directly to the tenant’s use, we were able to apply the practical expedient provided in Accounting Standards Codification (“ASC”) 606-10-50-14(b) (the “right to invoice” practical expedient). As a result of applying this practical expedient, we are not required to disclose the transaction price allocated to future performance obligations for multi-tenant parking since we cannot predict or estimate the use of such parking spaces. During the three months ended September 30, 2018 and 2017, we recognized $6.7 million and $6.6 million, respectively, of parking revenue for arrangements that are within the scope of Topic 606, which is included in rental revenues on our consolidated statements of operations. During the nine months ended September 30, 2018 and 2017, we recognized$20.2 millionand $20.3 million, respectively, of parking revenue for arrangements that are within the scope of Topic 606, which is included in rental revenues on our consolidated statements of operations. We concluded that the adoption of Topic 606 did not have a material impact on our consolidated financial statements or a material impact on the notes to our consolidated financial statements.

Effective January 1, 2018, we adopted FASB ASU No. 2017-09 “Compensation - Stock Compensation (Topic 718)” on a prospective basis. Under the guidance, an entity will not apply modification accounting to a share-based payment award if the award’s fair value, vesting conditions, and classification as an equity or liability instrument remain the same immediately before and after the change. The adoption of this guidance did not have an impact on our consolidated financial statements or notes to our consolidated financial statements.

Effective January 1, 2018, we adopted FASB ASU No. 2017-05 “Other Income - Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20)” (“ASU 2017-05”) on a retrospective basis. This standard clarifies the scope of the original guidance within Subtopic 610-20 “Gains and Losses from the Derecognition of Nonfinancial Assets” that was issued in connection with ASU 2014-09 which provided guidance for recognizing gains and losses from the transfer of nonfinancial assets in transactions with noncustomers. Additionally, ASU 2017-05 adds guidance pertaining to the partial sales of real estate and clarifies that nonfinancial assets within the scope of ASC 610-20 may include nonfinancial assets transferred within a legal entity to a counterparty. For example, a parent may transfer control of nonfinancial assets by transferring ownership interests in a consolidated subsidiary. We evaluated the impact of the new amendments on our historical transactions and concluded that there was no impact. As such, the adoption of this guidance did not have an impact on our consolidated financial statements or notes to our consolidated financial statements.

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KILROY REALTY CORPORATION AND KILROY REALTY, L.P.

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Effective January 1, 2018, we adopted FASB ASU No. 2016-15 (“ASU 2016-15”) which provides guidance where there is diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows, on a retrospective basis. The adoption of this guidance did not have an impact on our consolidated financial statements or notes to our consolidated financial statements.

Effective January 1, 2018, we adopted FASB ASU No. 2016-01 (“ASU 2016-01”) which amends the accounting guidance on the classification and measurement of financial instruments and FASB ASU No. 2018-03 (“ASU 2018-03”) which provides technical corrections and improvements to ASU 2016-01, on a modified retrospective basis. The amendments require that all investments in equity securities, including other ownership interests, are reported at fair value with changes in fair value reported in net income. This requirement does not apply to investments that qualify for equity method accounting or to those that result in consolidation of the investee or for which the entity has elected the predictability exception to fair value measurement. Additionally, the amendments require that the portion of the total fair value change caused by a change in instrument-specific credit risk for financial liabilities for which the fair value option has been elected would be recognized in other comprehensive income. Any accumulated amount remaining in other comprehensive income is reclassified to earnings when the liability is extinguished. The adoption of this guidance did not have an impact on our consolidated financial statements or notes to our consolidated financial statements since our only financial instruments within the scope of ASU 2016-01 and 2018-03 are the marketable securities related to our deferred compensation plan which are classified as trading securities and marked to market at fair value through earnings each reporting period.

Accounting Pronouncements Effective January 1, 2019

ASU No. 2016-02 “Leases (Topic 842)”

On February 25, 2016, the FASB issued ASU No. 2016-02 “Leases (Topic 842)” (“ASU 2016-02”) to amend the accounting guidance for leases. The accounting applied by a lessor is largely unchanged under ASU 2016-02. However, the standard requires lessees to recognize lease assets and lease liabilities for leases classified as operating leases on the balance sheet. Lessees will recognize in the statement of financial position a liability to make lease payments and a right-of-use asset representing its right to use the underlying asset for the lease term. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and lease liabilities. If a lessee makes this election, it will recognize lease expense for such leases generally on a straight-line basis over the lease term. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018. Early adoption is permitted.

In July 2018, the FASB issued ASU No. 2018-11 which (1) simplifies transition requirements for both lessees and lessors by adding an option that permits an organization to apply the transition provisions of the new standard at its adoption date instead of at the earliest comparative period presented in its financial statements and (2) provides a practical expedient for lessors that permits lessors to make an accounting policy election to not separate nonlease components from the associated lease components, if the following two criteria are met: (1) the timing and pattern of transfer of the lease and nonlease components are the same and (2) the lease component would be classified as an operating lease if accounted for separately. For leases where we are the lessor, we plan to elect the optional transition relief and apply the practical expedients provided by ASU 2018-11. As a result, leases where we are the lessor will be accounted for in a similar method to existing standards with the underlying leased asset being reported and recognized as a real estate asset.

In August 2018, the FASB released an exposure draft to amend ASU 2016-02 that clarifies lessor treatment of sales taxes and other similar taxes collected from lessees, lessor costs paid directly by lessees and recognition of variable payments for contracts with lease and nonlease components. If the amendments are codified as currently drafted, we do not expect the amendments to have an impact on our consolidated financial statements.

ASU 2016-02 also specifies that upon adoption, lessors will no longer be able to capitalize and amortize certain leasing related costs and instead will only be permitted to capitalize and amortize incremental direct leasing costs. As a result, we have concluded that upon the adoption of the standard, we will be required to expense as incurred certain leasing costs we are currently able to capitalize and amortize as deferred leasing costs under existing guidance. We continue to evaluate the impact of this change in the guidance and we currently expect this change will have a material impact to the Company’s consolidated financial statements and results of operations upon adoption of the standard on January 1, 2019.

For leases where we are the lessee, specifically for our ground leases, the adoption of the standard will significantly change the accounting on our consolidated balance sheets since both existing ground leases and any future ground leases will be required to be recorded on the Company’s consolidated balance sheets as an obligation of the Company. Existing ground leases executed before the January 1, 2019 adoption date will continue to be accounted for as operating leases and the new guidance will not have a material impact on our recognition of ground lease expense or our results of operations. However, we will be required to recognize

12

KILROY REALTY CORPORATION AND KILROY REALTY, L.P.

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

a right of use asset and a lease liability on our consolidated balance sheets equal to the present value of the minimum lease payments required in accordance with each ground lease. As of September 30, 2018, our future undiscounted minimum rental payments under these leases totaled$248.6 million, with several of the leases containing provisions for rental payments to fluctuate based on fair market value and operating income measurements with expirations through 2093. In addition, we currently believe that for new ground leases entered into after the adoption date of the new standard, such leases could be required to be accounted for as financing type leases, resulting in ground lease expense recorded using the effective interest method instead of on a straight-line basis over the term of the lease. This could have a significant impact on our results of operations if we enter into material new ground leases after the date of adoption since ground lease expense calculated using the effective interest method results in an increased amount of ground lease expense in the earlier years of a ground lease as compared to the current straight-line method.

Accounting Pronouncements Effective in 2020 and Beyond

ASU No. 2016-13 “Financial Instruments - Credit Losses (Topic 326)”

On June 16, 2016, the FASB issued ASU No. 2016-13 (“ASU 2016-13”) to amend the accounting for credit losses for certain financial instruments. Under the new guidance, an entity recognizes its estimate of expected credit losses as an allowance, which the FASB believes will result in more timely recognition of such losses.  In August 2018, the FASB released an exposure draft to amend ASU 2016-03. The proposed amendment would clarify that receivables arising from operating leases are not within the scope of Subtopic 326-20 “Financial Instruments – Credit Losses.” Instead, impairment of receivables arising from operating leases should be accounted for under Subtopic 842-30 “Leases – Lessor.” ASU 2016-13 is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The Company does not currently anticipate that the guidance will have a material impact on the consolidated financial statements or notes to the consolidated financial statements.

ASU No. 2018-13 “Fair Value Measurement (Topic 820)”

On August 28, 2018, the FASB issued ASU No. 2018-13 (“ASU 2018-13”) to amend the disclosure requirements for fair value measurements. The amendments in ASU 2018-13 include new, modified and eliminated disclosure requirements and are the result of a broader disclosure project called FASB Concepts Statement, Conceptual Framework for Financial Reporting - Chapter 8: Notes to Financial Statements, which the Board finalized on August 28, 2018. The Board used the guidance in the Concepts Statement to improve the effectiveness of ASC 820’s disclosure requirements. ASU 2018-13 is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for any eliminated or modified disclosures. The Company currently anticipates that the guidance will not have a significant impact on the disclosures in the notes to the consolidated financial statements.

ASU No. 2018-15 “Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40)”

On August 29, 2018, the FASB issued ASU No. 2018-15 (“ASU 2018-15”) to amend a customer’s accounting for implementation costs incurred in a cloud computing arrangement that is a service contract. ASU 2018-15 aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). ASU 2018-15 is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted, including adoption in any interim period. ASU 2018-15 can be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. The Company is currently evaluating the impact of ASU 2018-15 on the consolidated financial statements and notes to the consolidated financial statements.

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2.    Acquisitions

Operating Property Acquisitions

During the nine months ended September 30, 2018, we acquired the three operating properties listed below from an unrelated third party. The acquisition was funded with proceeds from the Company’s unsecured revolving credit facility and unsecured term loan facility.

Property	Date of Acquisition	Number of Buildings	Rentable Square Feet (unaudited)	Purchase Price (in millions) (1)
345, 347 & 349 Oyster Point Boulevard, South San Francisco, CA	January 31, 2018	3	145,530	$	111.0

________________________ 

(1) Excludes acquisition-related costs.

The related assets, liabilities and results of operations of the acquired properties are included in the consolidated financial statements as of the date of acquisition. The following table summarizes the assets acquired and liabilities assumed as of the date of acquisition, excluding acquisition-related costs:

	Total 2018 Operating Property Acquisitions
Assets
Land and improvements	$	50,928
Buildings and improvements (1)	59,123
Deferred leasing costs and acquisition-related intangible assets (2)	4,470
Total assets acquired	$	114,521
Liabilities
Deferred revenue and acquisition-related intangible liabilities (3)	$	3,521
Total liabilities assumed	3,521
Net assets and liabilities acquired	$	111,000

________________________ 

(1) Represents buildings, building improvements and tenant improvements.

(2) Represents in-place leases (approximately $3.8 million with a weighted average amortization period of 2.6 years) and leasing commissions (approximately $0.7 million with a weighted average amortization period of 3.5 years).

(3) Represents below-market leases (approximately $3.5 million with a weighted average amortization period of 9.8 years).

Development Project Acquisitions

During the nine months ended September 30, 2018, we acquired the following development site, which is located adjacent to the three operating properties we acquired in January 2018, from an unrelated third party. The acquisition was funded with proceeds from the Company’s unsecured revolving credit facility and the Company’s at-the-market stock offering program.

Project	Date of Acquisition	City/Submarket	Type	Purchase Price (in millions) (1)
Kilroy Oyster Point	June 1, 2018	South San Francisco	Land	$	308.2

________________________ 

(1) Excludes acquisition-related costs. In connection with this acquisition, we also recorded $40.6 million in accrued liabilities and environmental remediation liabilities at the date of acquisition, which are not included in the purchase price above. As of September 30, 2018, the purchase price and assumed liabilities are included in undeveloped land and construction in progress and the assumed liabilities are included in accounts payable, accrued expenses and other liabilities on the Company’s consolidated balance sheets.

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KILROY REALTY CORPORATION AND KILROY REALTY, L.P.

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

3.    Receivables

Current Receivables, net

Current receivables, net consisted of the following as of September 30, 2018 and December 31, 2017:

	September 30, 2018			December 31, 2017
	(in thousands)
Current receivables	$	21,674		$	19,235
Allowance for uncollectible tenant receivables	(4,155		)	(2,309		)
Current receivables, net	$	17,519		$	16,926

Deferred Rent Receivables, net

Deferred rent receivables, net consisted of the following as of September 30, 2018 and December 31, 2017:

	September 30, 2018			December 31, 2017
	(in thousands)
Deferred rent receivables	$	265,858		$	249,629
Allowance for deferred rent receivables	(4,855		)	(3,238		)
Deferred rent receivables, net	$	261,003		$	246,391

4.    Prepaid Expenses and Other Assets, Net

Prepaid expenses and other assets, net consisted of the following at September 30, 2018 and December 31, 2017:

	September 30, 2018		December 31, 2017
	(in thousands)
Furniture, fixtures and other long-lived assets, net	$	36,717	$	39,686
Notes receivable, net (1)	2,046		19,912
Prepaid expenses & acquisition deposits	33,912		55,108
Total prepaid expenses and other assets, net	$	72,675	$	114,706

________________________ 

(1) During the nine months ended September 30, 2018, a note receivable with a balance of $15.1 million was repaid to the Company. Notes receivable are shown net of a valuation allowance of approximately $2.9 million as of September 30, 2018.

5.    Secured and Unsecured Debt of the Operating Partnership

The Company generally guarantees all of the Operating Partnership’s unsecured debt obligations including the unsecured revolving credit facility, the unsecured term loan facility and all of the unsecured senior notes.

Unsecured Senior Notes - Private Placement

On May 11, 2018, the Operating Partnership entered into a Note Purchase Agreement (the “Note Purchase Agreement”) in connection with the issuance and sale of $50.0 million principal amount of the Operating Partnership’s 4.30% Senior Notes, Series A, due July 18, 2026 (the “Series A Notes”), and $200.0 million principal amount of the Operating Partnership’s 4.35% Senior Notes, Series B, due October 18, 2026 (the “Series B Notes” and, together with the Series A Notes, the “Series A and B Notes”), pursuant to a private placement. The Company drew the full amount of the Series A Notes on July 18, 2018. As of September 30, 2018, there were no amounts issued or outstanding under the Series B Notes. On October 22, 2018, the Company drew the full amount of the Series B Notes, the proceeds of which were used to repay a portion of the outstanding balance on our unsecured revolving credit facility. The Series A and B Notes mature on their respective due dates, unless earlier redeemed or prepaid pursuant to the terms of the Note Purchase Agreement. Interest on the Series A and B Notes is payable semi-annually in arrears on April 18 and October 18 of each year beginning April 18, 2019.

The Operating Partnership may, at its option and upon notice to the purchasers of the Series A and B Notes, prepay at any time all, or from time to time any part of the Series A and B Notes then outstanding (in an amount not less than 5% of the aggregate

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KILROY REALTY CORPORATION AND KILROY REALTY, L.P.

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

principal amount of the Series A and B Notes then outstanding in the case of a partial prepayment), at 100% of the principal amount so prepaid, plus the make-whole amount determined for the prepayment date with respect to such principal amount as set forth in the Note Purchase Agreement.

In connection with the issuance of the Series A and B Notes, the Company will enter into an agreement whereby it will guarantee the payment by the Operating Partnership of all amounts due with respect to the Series A and B Notes and the performance by the Operating Partnership of its obligations under the Note Purchase Agreement.

Unsecured Revolving Credit Facility and Term Loan Facility

The following table summarizes the balance and terms of our unsecured revolving credit facility as of September 30, 2018 and December 31, 2017:

	September 30, 2018			December 31, 2017
	(in thousands)
Outstanding borrowings	$	330,000		$	—
Remaining borrowing capacity	420,000			750,000
Total borrowing capacity (1)	$	750,000		$	750,000
Interest rate (2)	3.23		%	2.56		%
Facility fee-annual rate (3)	0.200%
Maturity date	July 2022

________________________

(1) We may elect to borrow, subject to bank approval and obtaining commitments for any additional borrowing capacity, up to an additional $600.0 million under an accordion feature under the terms of the unsecured revolving credit facility and unsecured term loan facility.

(2) Our unsecured revolving credit facility interest rate was calculated based on an annual rate of LIBOR plus 1.000% as of September 30, 2018 and December 31, 2017.

(3) Our facility fee is paid on a quarterly basis and is calculated based on the total borrowing capacity. In addition to the facility fee, we incurred debt origination and legal costs. As of September 30, 2018 and December 31, 2017, $5.0 millionand $6.0 million of unamortized deferred financing costs, respectively, which are included in prepaid expenses and other assets, net on our consolidated balance sheets, remained to be amortized through the maturity date of our unsecured revolving credit facility.

The Company intends to borrow under the unsecured revolving credit facility from time to time for general corporate purposes, to finance development and redevelopment expenditures, to fund potential acquisitions and to potentially repay long-term debt. Refer to Note 17 for repayments of outstanding borrowings under the unsecured revolving credit facility subsequent to September 30, 2018.

During the first quarter of 2018, we borrowed the full $150.0 million borrowing capacity of our unsecured term loan facility. In connection with the funding of the outstanding borrowings, we transferred $30.0 million of outstanding borrowings under the unsecured revolving credit facility to the balance of our unsecured term loan facility. As a result, only $120.0 million of cash proceeds were received from the funding of the unsecured term loan facility. The following table summarizes the balance and terms of our unsecured term loan facility as of September 30, 2018 and December 31, 2017:

	September 30, 2018			December 31, 2017
	(in thousands)
Outstanding borrowings	$	150,000		$	—
Remaining borrowing capacity	—			150,000
Total borrowing capacity (1)	$	150,000		$	150,000
Interest rate (2)	3.23		%	2.66		%
Undrawn facility fee-annual rate (3)	0.200%
Maturity date	July 2022

________________________

(1) As of September 30, 2018 and December 31, 2017, $1.0 million and $1.2 million of unamortized deferred financing costs, respectively, remained to be amortized through the maturity date of our unsecured term loan facility.

(2) Our unsecured term loan facility interest rate was calculated based on an annual rate of LIBOR plus 1.100% as of September 30, 2018 and December 31, 2017.

(3) Prior to borrowing the full capacity of our unsecured term loan facility, the undrawn facility fee was calculated based on any unused borrowing capacity and was paid on a quarterly basis.

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KILROY REALTY CORPORATION AND KILROY REALTY, L.P.

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Debt Covenants and Restrictions

The unsecured revolving credit facility, unsecured term loan facility, unsecured senior notes, and certain other secured debt arrangements contain covenants and restrictions requiring us to meet certain financial ratios and reporting requirements. Some of the more restrictive financial covenants include a maximum ratio of total debt to total asset value, a minimum fixed-charge coverage ratio, a minimum unsecured debt ratio and a minimum unencumbered asset pool debt service coverage ratio. Noncompliance with one or more of the covenants and restrictions could result in the full principal balance of the associated debt becoming immediately due and payable. We believe we were in compliance with all of our debt covenants as of September 30, 2018.

Debt Maturities

The following table summarizes the stated debt maturities and scheduled amortization payments of our issued and outstanding debt, excluding unamortized debt discounts, premiums and deferred financing costs, as of September 30, 2018:

Year	(in thousands)
Remaining 2018	$	914
2019	76,309
2020	255,137
2021	5,342
2022	485,554
Thereafter	2,068,469
Total (1)	$	2,891,725

________________________

(1) Includes gross principal balance of outstanding debt before the effect of the following at September 30, 2018: $13.3 millionof unamortized deferred financing costs for the unsecured term loan facility, unsecured senior notes and secured debt, $5.7 million of unamortized discounts for the unsecured senior notes and $1.2 million of unamortized premiums for the secured debt.

Capitalized Interest and Loan Fees

The following table sets forth gross interest expense, including debt discount/premium and deferred financing cost amortization, net of capitalized interest, for the three and nine months ended September 30, 2018 and 2017. The interest expense capitalized was recorded as a cost of development and increased the carrying value of undeveloped land and construction in progress.

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
	(in thousands)
Gross interest expense	$	30,231		$	28,331		$	85,834		$	84,577
Capitalized interest and deferred financing costs	(19,156		)	(12,180		)	(48,549		)	(33,101		)
Interest expense	$	11,075		$	16,151		$	37,285		$	51,476

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KILROY REALTY CORPORATION AND KILROY REALTY, L.P.

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

6.    Stockholders’ Equity of the Company

Forward Equity Offering

On August 8, 2018, the Company entered into forward equity sale agreements with certain financial institutions acting as forward purchasers in connection with an offering of5,000,000 common shares at an initial gross offering price of $360.5 million, or $72.10 per share, before underwriting discounts, commissions and offering expenses. The forward purchasers borrowed and sold an aggregate of 5,000,000 shares in the offering. The Company did not receive any proceeds from the sale of its common shares by the forward purchasers in the offering. The Company currently expects to fully physically settle the forward sale agreements and receive cash proceeds upon one or more settlement dates, at the Company’s discretion, prior to the final settlement date under the forward sale agreements of August 1, 2019. The forward sale price that we expect to receive upon physical settlement of the agreements will be subject to adjustment for (i) the forward purchasers’ stock borrowing costs and (ii) scheduled dividends during the term of the agreements. The full amount of this offering remains available for future settlement as of the date of this filing. Upon issuance of shares, the Company will contribute the net proceeds from these issuances to the Operating Partnership in exchange for an equal number of units in the Operating Partnership.

At-The-Market Stock Offering Program

In May 2018, the Company completed its then existing at-the-market stock offering program, under which we sold an aggregate of $300.0 million in gross sales of shares. In June 2018, the Company commenced a new at-the-market stock offering program (the “2018 At-The-Market Program”), under which we may currently offer and sell shares of our common stock with an aggregate gross sales price of up to $500.0 million. In connection with the 2018 At-The-Market-Program, the Company also entered into related forward purchase agreements whereby, at our discretion, we may sell shares of our common stock under the 2018 At-The-Market-Program under forward equity sale agreements. The use of a forward equity sale agreement would allow the Company to lock in a share price on the sale of shares of our common stock at the time the agreement is executed, but defer receiving the proceeds from the sale of shares until a later date. This also allows us to defer the potential dilutive impact of such offering of shares until such time as we settle the forward equity sale agreements.

Since commencement of our 2018 At-The-Market Program in June 2018, we have sold447,466shares of common stock through September 30, 2018, none of which were sold under forward equity sale agreements. Approximately$466.2 million remains available to be sold under this program.

The following table sets forth information regarding sales of common stock under our at-the-market offering programs for the nine months ended September 30, 2018:

	Nine Months Ended September 30, 2018
	(in millions, except share and per share data)
Shares of common stock sold during the period	1,817,195
Weighted average price per common share	$	73.64
Aggregate gross proceeds	$	133.8
Aggregate net proceeds after selling commissions	$	132.1

The proceeds from sales were used to fund acquisitions, development expenditures and general corporate purposes. Actual future sales will depend upon a variety of factors, including but not limited to, market conditions, the trading price of the Company’s common stock and our capital needs. We have no obligation to sell the remaining shares available for sale under this program.

7.    Noncontrolling Interests on the Company’s Consolidated Financial Statements

Common Units of the Operating Partnership

The Company owned an approximate 98.0%, 97.9%, and 97.9% common general partnership interest in the Operating Partnership as of September 30, 2018, December 31, 2017 and September 30, 2017, respectively. The remaining approximate 2.0%, 2.1%, and 2.1% common limited partnership interest as of September 30, 2018, December 31, 2017 and September 30, 2017, respectively, was owned by non-affiliated investors and certain of our executive officers and directors in the form of noncontrolling common units. There were 2,025,287, 2,077,193 and 2,077,193common units outstanding held by these investors, executive officers and directors as of September 30, 2018, December 31, 2017 and September 30, 2017, respectively.

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KILROY REALTY CORPORATION AND KILROY REALTY, L.P.

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

The noncontrolling common units may be redeemed by unitholders for cash. Except under certain circumstances, we, at our option, may satisfy the cash redemption obligation with shares of the Company’s common stock on a one-for-one basis. If satisfied in cash, the value for each noncontrolling common unit upon redemption is the amount equal to the average of the closing quoted price per share of the Company’s common stock, par value $.01 per share, as reported on the NYSE for the ten trading days immediately preceding the applicable redemption date. The aggregate value upon redemption of the then-outstanding noncontrolling common units was $143.4 millionand $154.5 million as of September 30, 2018 and December 31, 2017, respectively. This redemption value does not necessarily represent the amount that would be distributed with respect to each noncontrolling common unit in the event of our termination or liquidation. In the event of our termination or liquidation, it is expected in most cases that each common unit would be entitled to a liquidating distribution equal to the liquidating distribution payable in respect of each share of the Company’s common stock.

8.    Partners’ Capital of the Operating Partnership

At-The-Market Stock Offering Program

During the nine months ended September 30, 2018, the Company utilized its at-the-market stock offering programs to issue shares of common stock (see Note 6 “Stockholders’ Equity of the Company” for additional information). The net offering proceeds were contributed by the Company to the Operating Partnership in exchange for common units for the nine months ended September 30, 2018 as follows:

	Nine Months Ended September 30, 2018
	(in millions, except share data)
Shares of common stock contributed by the Company	1,817,195
Common units exchanged for share of common stock by the Company	1,817,195
Aggregate gross proceeds	$	133.8
Aggregate net proceeds after selling commissions	$	132.1

Common Units Outstanding

The following table sets forth the number of common units held by the Company and the number of common units held by non-affiliated investors and certain of our executive officers and directors in the form of noncontrolling common units as well as the ownership interest held on each respective date:

	September 30, 2018		December 31, 2017		September 30, 2017
Company owned common units in the Operating Partnership	100,746,988		98,620,333		98,382,256
Company owned general partnership interest	98.0	%	97.9	%	97.9	%
Noncontrolling common units of the Operating Partnership	2,025,287		2,077,193		2,077,193
Ownership interest of noncontrolling interest	2.0	%	2.1	%	2.1	%

For further discussion of the noncontrolling common units as of September 30, 2018 and December 31, 2017, refer to Note 7.

9.    Share-Based Compensation

Stockholder Approved Equity Compensation Plans

As of September 30, 2018, we maintained one share-based incentive compensation plan, the Kilroy Realty 2006 Incentive Award Plan, as amended (the “2006 Plan”). As of September 30, 2018, approximately 1.8 million shares were available for grant under the 2006 Plan. The calculation of shares available for grant is presented after taking into account a reserve for a sufficient number of shares to cover the vesting and payment of 2006 Plan awards that were outstanding on that date, including performance-based vesting awards at (i) levels actually achieved for the performance or market conditions (as defined below) for which the performance period has been completed and (ii) at target levels for the performance or market conditions (as defined below) for awards still in a performance period.

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KILROY REALTY CORPORATION AND KILROY REALTY, L.P.

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

2018 Share-Based Compensation Grants

In January and February 2018, the Executive Compensation Committee of the Company’s Board of Directors awarded 282,038 restricted stock units (“RSUs”) to certain officers of the Company under the 2006 Plan, which included 158,205 RSUs (at the target level of performance) that are subject to market and/or performance-based vesting requirements (the “2018 Performance-Based RSUs”) and 123,833 RSUs that are subject to time-based vesting requirements (the “2018 Time-Based RSUs”).

2018 Performance-Based RSU Grant

The 2018 Performance-Based RSUs are scheduled to vest at the end of a three-year period (consisting of calendar years 2018-2020). A target number of 2018 Performance-Based RSUs were awarded, and the final number of 2018 Performance-Based RSUs that vest (which may be more or less than the target number) will be based upon (1) the achievement of pre-set FFO per share goals for the year ending December 31, 2018 that applies to 100% of the Performance-Based RSUs awarded (the “FFO performance condition”) and (2) a performance measure that applies to 50% of the award based upon a measure of the Company’s average debt to EBITDA ratio for the three-year performance period (the “debt to EBITDA ratio performance condition”) and a market measure that applies to the other 50% of the award based upon the relative ranking of the Company’s total stockholder return for the three-year performance period compared to the total stockholder returns of an established comparison group of companies over the same period (the “market condition”). The 2018 Performance-Based RSUs are also subject to a three-year service vesting provision and are scheduled to cliff vest on the date the final vesting percentage is determined following the end of the three-year performance period under the awards. The number of 2018 Performance-Based RSUs ultimately earned could fluctuate from the target number of 2018 Performance-Based RSUs granted based upon the levels of achievement for the FFO performance condition, the debt to EBITDA ratio performance condition, the market condition, and the extent to which the service vesting condition is satisfied. The estimate of the number of 2018 Performance-Based RSUs earned is evaluated quarterly during the performance period based on our estimate for each of the performance conditions measured against the applicable goals. As of September 30, 2018, the number of 2018 Performance-Based RSUs estimated to be earned based on the Company’s estimate of the performance conditions measured against the applicable goals was 180,931, and the compensation cost recorded to date for this program was based on that estimate. Compensation expense for the 2018 Performance-Based RSU grant is recognized on a straight-line basis over the requisite service period for each participant, which is generally the three-year service period.

Each 2018 Performance-Based RSU represents the right, subject to the applicable vesting conditions, to receive one share of our common stock in the future. The determination of the grant date fair value of the portion of the 2018 Performance-Based RSU grants covered by the debt to EBITDA ratio performance condition was based on the $66.46 share price on the grant date. The determination of the grant date fair value of the portion of the 2018 Performance-Based RSU grants covered by the market condition was calculated using a Monte Carlo simulation pricing model based on the assumptions in the table below, which resulted in a $70.08 grant date fair value per share.

	Fair Value Assumptions
Expected share price volatility	20.00%
Risk-free interest rate	2.37%
Expected life	2.9 years

The computation of expected volatility is based on a blend of the historical volatility of our shares of common stock over approximately 5.8 years, as that is expected to be most consistent with future volatility and equates to a time period twice as long as the approximate 2.9-year performance period of the RSUs, and implied volatility data based on the observed pricing of six month publicly-traded options on our shares of common stock. The risk-free interest rate is based on the yield curve on zero-coupon U.S. Treasury STRIP securities in effect at February 14, 2018. The expected life of the 2018 Performance-Based RSUs is equal to the remaining 2.9-year vesting period as of February 14, 2018.

The total grant date fair value of the 2018 Performance-Based RSU awards was $10.8 million on the February 14, 2018 grant date of the awards. For the nine months ended September 30, 2018, we recorded compensation expense based upon the grant date fair value per share for each component multiplied by the estimated number of RSUs to be earned as discussed above.

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KILROY REALTY CORPORATION AND KILROY REALTY, L.P.

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

2018 Time-Based RSU Grant

The 2018 Time-Based RSUs are scheduled to vest in three equal annual installments beginning on January 5, 2019 through January 5, 2021. Compensation expense for the 2018 Time-Based RSUs is recognized on a straight-line basis over the requisite service period for each participant, which is generally the three-year service vesting period. Each 2018 Time-Based RSU represents the right to receive one share of our common stock in the future. The total grant date fair value of the 2018 Time-Based RSU awards was $8.4 million, which was based on the $70.37 and $66.46 closing share prices of the Company’s common stock on the NYSE on the January 29, 2018 and February 14, 2018, respectively, grant dates of the awards.

Share-Based Compensation Cost Recorded During the Period

The total compensation cost for all share-based compensation programs was $8.1 million and $6.4 million for the three months ended September 30, 2018 and 2017, respectively, and $24.7 million and $19.0 million for the nine months ended September 30, 2018 and 2017, respectively. Of the total share-based compensation costs, $1.5 million and $1.7 million was capitalized as part of real estate assets and deferred leasing costs for the three months ended September 30, 2018 and 2017, respectively, and $5.8 million and $5.4 million for the nine months ended September 30, 2018 and 2017, respectively. As of September 30, 2018, there was approximately $24.3 million of total unrecognized compensation cost related to nonvested incentive awards granted under share-based compensation arrangements that is expected to be recognized over a weighted-average period of 1.8 years. The remaining compensation cost related to these nonvested incentive awards had been recognized in periods prior to September 30, 2018.

10.    Commitments and Contingencies

General

As of September 30, 2018, we had commitments of approximately $776.5 million, excluding our ground lease commitments, for contracts and executed leases directly related to our operating properties and development projects.

Environmental Matters

We follow the policy of monitoring all of our properties, both acquisition and existing stabilized portfolio properties, for the presence of hazardous or toxic substances. While there can be no assurance that a material environmental liability does not exist, we are not currently aware of any environmental liability with respect to our stabilized portfolio properties that would have a material adverse effect on our financial condition, results of operations and cash flow, or that we believe would require additional disclosure or the recording of a loss contingency.

As of September 30, 2018, we had accrued environmental remediation liabilities of approximately $79.6 millionrecorded on our consolidated balance sheets in connection with certain of our in-process and future development projects. The accrued environmental remediation liabilities represent the remaining costs we estimate we will incur when we commence development at various development acquisition sites. These estimates, which we developed with the assistance of third party experts, consist primarily of the removal of contaminated soil and other related costs since we are required to dispose of any existing contaminated soil when we develop new properties at these sites.

We record estimated environmental remediation obligations for acquired properties at the acquisition date when we are aware of such costs and when such costs are probable of being incurred and can be reasonably estimated. Estimated costs related to development environmental remediation liabilities are recorded as an increase to the cost of the development project. Actual costs are recorded as a decrease to the liability when incurred. These accruals are adjusted as an increase or decrease to the development project costs and as an increase or decrease to the accrued environmental remediation liability if we obtain further information or circumstances change. The environmental remediation obligation recorded at September 30, 2018 was not discounted to its present value since we expect to complete the remediation activities in the next one to five years in connection with development activities at the various sites. It is possible that we could incur additional environmental remediation costs in connection with these future development projects.  However, given we are in the pre-development phase on these future development projects, potential additional environmental costs cannot be reasonably estimated at this time and certain changes in estimates could occur as the site conditions, final project timing, design elements, actual soil conditions and other aspects of the projects, which may depend upon municipal and other approvals beyond the control of the Company, are determined.

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KILROY REALTY CORPORATION AND KILROY REALTY, L.P.

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Other than the accrued environmental liabilities discussed above, we are not aware of any unasserted claims and assessments with respect to an environmental liability that we believe would require additional disclosure or the recording of an additional loss contingency.

11.    Fair Value Measurements and Disclosures

Assets and Liabilities Reported at Fair Value

The only assets we record at fair value on our consolidated financial statements are the marketable securities related to our Deferred Compensation Plan. The following table sets forth the fair value of our marketable securities as of September 30, 2018 and December 31, 2017:

	Fair Value (Level 1) (1)
	September 30, 2018		December 31, 2017
Description	(in thousands)
Marketable securities (2)	$	23,353	$	20,674

________________________

(1) Based on quoted prices in active markets for identical securities.

(2) The marketable securities are held in a limited rabbi trust.

We report the change in the fair value of the marketable securities at the end of each accounting period in interest income and other net investment gain/loss in the consolidated statements of operations. We also adjust the related Deferred Compensation Plan liability to fair value at the end of each accounting period based on the performance of the benchmark funds selected by each participant, which results in a corresponding increase or decrease to compensation cost for the period.

The following table sets forth the net gain on marketable securities recorded during the three and nine months ended September 30, 2018 and 2017:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Description	(in thousands)				(in thousands)
Net gain on marketable securities	$	271	$	536	$	289	$	1,719

Financial Instruments Disclosed at Fair Value

The following table sets forth the carrying value and the fair value of our other financial instruments as of September 30, 2018 and December 31, 2017:

	September 30, 2018				December 31, 2017
	Carrying Value		Fair Value (1)		Carrying Value		Fair Value (1)
	(in thousands)
Liabilities
Secured debt, net	$	336,866	$	331,313	$	340,800	$	346,858
Unsecured debt, net	2,207,049		2,173,366		2,006,263		2,077,199
Unsecured line of credit	330,000		330,221		—		—

________________________

(1) Fair value calculated using Level II inputs, which are based on model-derived valuations in which significant inputs and significant value drivers are observable in active markets.

12.    Other Significant Events

During the nine months ended September 30, 2018, we recognized $6.7 million of provision for bad debts. The provision for bad debts is primarily due to a $7.0 million increase in the provision for one tenant recognized during the second quarter of 2018.

22

KILROY REALTY CORPORATION AND KILROY REALTY, L.P.

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

13.    Net Income Available to Common Stockholders Per Share of the Company

The following table reconciles the numerator and denominator in computing the Company’s basic and diluted per-share computations for net income available to common stockholders for the three and nine months ended September 30, 2018 and 2017:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
	(in thousands, except share and per share amounts)
Numerator:
Net income attributable to Kilroy Realty Corporation	$	34,400		$	71,110		$	98,195		$	136,083
Total preferred dividends	—			(4,552		)	—			(13,363		)
Allocation to participating securities (1)	(507		)	(501		)	(1,492		)	(1,460		)
Numerator for basic and diluted net income available to common stockholders	$	33,893		$	66,057		$	96,703		$	121,260
Denominator:
Basic weighted average vested shares outstanding	100,676,778			98,352,139			99,711,312			98,008,780
Effect of dilutive securities	551,556			559,473			497,333			582,268
Diluted weighted average vested shares and common share equivalents outstanding	101,228,334			98,911,612			100,208,645			98,591,048
Basic earnings per share:
Net income available to common stockholders per share	$	0.34		$	0.67		$	0.97		$	1.24
Diluted earnings per share:
Net income available to common stockholders per share	$	0.33		$	0.67		$	0.97		$	1.23

________________________

(1) Participating securities include nonvested shares, certain time-based RSUs and vested market measure-based RSUs.

Share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are considered participating securities. The impact of potentially dilutive common shares, including stock options, RSUs, shares issuable under forward equity sale agreements and other securities are considered in our diluted earnings per share calculation for the three and nine months ended September 30, 2018 and 2017. Certain market measure-based RSUs are not included in dilutive securities for the three and nine months ended September 30, 2018 and 2017, as not all performance metrics had been met by the end of the applicable reporting periods.

See Note 9 “Share-Based Compensation” for additional information regarding share-based compensation.

23

KILROY REALTY CORPORATION AND KILROY REALTY, L.P.

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

14.    Net Income Available to Common Unitholders Per Unit of the Operating Partnership

The following table reconciles the numerator and denominator in computing the Operating Partnership’s basic and diluted per-unit computations for net income available to common unitholders for the three and nine months ended September 30, 2018 and 2017:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
	(in thousands, except unit and per unit amounts)
Numerator:
Net income attributable to Kilroy Realty, L.P.	$	34,993		$	72,402		$	99,901		$	138,427
Total preferred distributions	—			(4,552		)	—			(13,363		)
Allocation to participating securities (1)	(507		)	(501		)	(1,492		)	(1,460		)
Numerator for basic and diluted net income available to common unitholders	$	34,486		$	67,349		$	98,409		$	123,604
Denominator:
Basic weighted average vested units outstanding	102,721,806			100,429,332			101,773,540			100,160,595
Effect of dilutive securities	551,556			559,473			497,333			582,268
Diluted weighted average vested units and common unit equivalents outstanding	103,273,362			100,988,805			102,270,873			100,742,863
Basic earnings per unit:
Net income available to common unitholders per unit	$	0.34		$	0.67		$	0.97		$	1.23
Diluted earnings per unit:
Net income available to common unitholders per unit	$	0.33		$	0.67		$	0.96		$	1.23

________________________

(1) Participating securities include nonvested shares, certain time-based RSUs and vested market measure-based RSUs.

Share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are considered participating securities. The impact of potentially dilutive common units, including stock options, RSUs, shares issuable under forward equity sale agreements and other securities are considered in our diluted earnings per share calculation for the three and nine months ended September 30, 2018 and 2017. Certain market measure-based RSUs are not included in dilutive securities for the three and nine months ended September 30, 2018 and 2017, as not all performance metrics had been met by the end of the applicable reporting periods.

See Note 9 “Share-Based Compensation” for additional information regarding share-based compensation.

15.    Supplemental Cash Flow Information of the Company

Supplemental cash flow information is included as follows (in thousands):

	Nine Months Ended September 30,
	2018		2017
SUPPLEMENTAL CASH FLOWS INFORMATION:
Cash paid for interest, net of capitalized interest of $46,761 and $31,880 as of September 30, 2018 and 2017, respectively	$	32,175	$	46,878
NON-CASH INVESTING TRANSACTIONS:
Accrual for expenditures for operating properties and development properties	$	142,133	$	104,409
Assumption of accrued liabilities in connection with acquisitions (Note 2)	$	40,624	$	—
Tenant improvements funded directly by tenants	$	7,211	$	10,361
NON-CASH FINANCING TRANSACTIONS:
Accrual of dividends and distributions payable to common stockholders and common unitholders	$	47,411	$	43,324
Exchange of common units of the Operating Partnership into shares of the Company’s common stock	$	1,962	$	10,939

24

KILROY REALTY CORPORATION AND KILROY REALTY, L.P.

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

The following is a reconciliation of our cash and cash equivalents and restricted cash at the beginning and end of the nine months ended September 30, 2018 and 2017.

	Nine Months Ended September 30,
	2018		2017
RECONCILIATION OF CASH AND CASH EQUIVALENTS AND RESTRICTED CASH:
Cash and cash equivalents at beginning of period	$	57,649	$	193,418
Restricted cash at beginning of period	9,149		56,711
Cash and cash equivalents and restricted cash at beginning of period	$	66,798	$	250,129
Cash and cash equivalents at end of period	$	86,517	$	64,954
Restricted cash at end of period	—		179,276
Cash and cash equivalents and restricted cash at end of period	$	86,517	$	244,230

16.    Supplemental Cash Flow Information of the Operating Partnership:

Supplemental cash flow information is included as follows (in thousands):

	Nine Months Ended September 30,
	2018		2017
SUPPLEMENTAL CASH FLOWS INFORMATION:
Cash paid for interest, net of capitalized interest of $46,761 and $31,880 as of September 30, 2018 and 2017, respectively	$	32,175	$	46,878
NON-CASH INVESTING TRANSACTIONS:
Accrual for expenditures for operating properties and development properties	$	142,133	$	104,409
Assumption of accrued liabilities in connection with acquisitions (Note 2)	$	40,624	$	—
Tenant improvements funded directly by tenants	$	7,211	$	10,361
NON-CASH FINANCING TRANSACTIONS:
Accrual of distributions payable to common unitholders	$	47,411	$	43,324

The following is a reconciliation of our cash and cash equivalents and restricted cash at the beginning and end of the nine months ended September 30, 2018 and 2017.

	Nine Months Ended September 30,
	2018		2017
RECONCILIATION OF CASH AND CASH EQUIVALENTS AND RESTRICTED CASH:
Cash and cash equivalents at beginning of period	$	57,649	$	193,418
Restricted cash at beginning of period	9,149		56,711
Cash and cash equivalents and restricted cash at beginning of period	$	66,798	$	250,129
Cash and cash equivalents at end of period	$	86,517	$	64,954
Restricted cash at end of period	—		179,276
Cash and cash equivalents and restricted cash at end of period	$	86,517	$	244,230

17.    Subsequent Events

On October 17, 2018, aggregate dividends, distributions and dividend equivalents of $47.4 millionwere paid to common stockholders, common unitholders and RSU holders of record on September 28, 2018.

On October 22, 2018, the Operating Partnership issued $200.0 million principal amount of its 4.35% Senior Notes, Series B, due October 18, 2026 pursuant to the Note Purchase Agreement, the proceeds of which were used to repay a portion of the outstanding balance on our unsecured revolving credit facility. As of the date of this report, the outstanding balance on our unsecured revolving credit facility was approximately $165.0 million.

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ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF

OPERATIONS

The following discussion relates to our consolidated financial statements and should be read in conjunction with the financial statements and notes thereto appearing elsewhere in this report. The results of operations discussion is combined for the Company and the Operating Partnership because there are no material differences in the results of operations between the two reporting entities.

Forward-Looking Statements

Statements contained in this “Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations” that are not historical facts may be forward-looking statements. Forward-looking statements include, among other things, statements or information concerning our plans, objectives, capital resources, portfolio performance, results of operations, projected future occupancy and rental rates, lease expirations, debt maturities, potential investments, strategies such as capital recycling, development and redevelopment activity, projected construction costs, projected construction commencement and completion dates, projected square footage of space that could be constructed on undeveloped land that we own, projected rentable square footage of or number of units in properties under construction or in the development pipeline, anticipated proceeds from capital recycling activity or other dispositions and anticipated dates of those activities or dispositions, resolution of our discussions with tenants on our internal watch list, projected increases in the value of properties, dispositions, future executive incentive compensation, pending, potential or proposed acquisitions, plans to grow our Net Operating Income and FFO, our ability to re-lease properties at or above current market rates, anticipated market conditions and demographics and other forward-looking financial data, as well as the discussion in “—Factors That May Influence Future Results of Operations,” “—Liquidity and Capital Resource of the Company,” and “—Liquidity and Capital Resources of the Operating Partnership.” Forward-looking statements can be identified by the use of words such as “believes,” “expects,” “projects,” “may,” “will,” “should,” “seeks,” “approximately,” “intends,” “plans,” “pro forma,” “estimates” or “anticipates” and the negative of these words and phrases and similar expressions that do not relate to historical matters. Forward-looking statements are based on our current expectations, beliefs and assumptions, and are not guarantees of future performance. Forward-looking statements are inherently subject to uncertainties, risks, changes in circumstances, trends and factors that are difficult to predict, many of which are outside of our control. Accordingly, actual performance, results and events may vary materially from those indicated in the forward-looking statements, and you should not rely on the forward-looking statements as predictions of future performance, results or events. Numerous factors could cause actual future performance, results and events to differ materially from those indicated in the forward-looking statements, including, among others: global market and general economic conditions and their effect on our liquidity and financial conditions and those of our tenants; adverse economic or real estate conditions generally, and specifically, in the States of California and Washington; risks associated with our investment in real estate assets, which are illiquid and with trends in the real estate industry; defaults on or non-renewal of leases by tenants; any significant downturn in tenants' businesses; our ability to re-lease property at or above current market rates; costs to comply with government regulations, including environmental remediation; the availability of cash for distribution and debt service and exposure to risk of default under debt obligations; increases in interest rates and our ability to manage interest rate exposure; the availability of financing on attractive terms or at all, which may adversely impact our future interest expense and our ability to pursue development, redevelopment and acquisition opportunities and refinance existing debt; a decline in real estate asset valuations, which may limit our ability to dispose of assets at attractive prices or obtain or maintain debt financing, and which may result in write offs or impairment charges; significant competition, which may decrease the occupancy and rental rates of properties; potential losses that may not be covered by insurance; the ability to successfully complete acquisitions and dispositions on announced terms; the ability to successfully operate acquired, developed and redeveloped properties; the ability to successfully complete development and redevelopment projects on schedule and within budgeted amounts; delays or refusals in obtaining all necessary zoning, land use and other required entitlements, governmental permits and authorizations for our development and redevelopment properties; increases in anticipated capital expenditures, tenant improvement and/or leasing costs; defaults on leases for land on which some of our properties are located; adverse changes to, or implementations of, applicable laws, regulations or legislation, as well as business and consumer reactions to such changes; risks associated with joint venture investments, including our lack of sole decision-making authority, our reliance on co-venturers’ financial condition and disputes between us and our co-venturers; environmental uncertainties and risks related to natural disasters; and our ability to maintain our status as a REIT. The factors included in this report are not exhaustive and additional factors could adversely affect our business and financial performance. For a discussion of additional factors that could materially adversely affect the Company's and the Operating Partnership's business and financial performance, see the discussion below as well as “Item 1A. Risk Factors,” and in our “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations” in the Company’s and the Operating Partnership’s annual report on Form 10-K for the year ended December 31, 2017 and their respective other filings with the SEC. All forward-looking statements are based on information that was available and speak only as of the date on which they were made. We assume no obligation to update any forward-looking statement that becomes untrue because of

26

subsequent events, new information or otherwise, except to the extent we are required to do so in connection with our ongoing requirements under federal securities laws.

Overview and Background

We are a self-administered REIT active in premier office and mixed-use submarkets along the West Coast. We own, develop, acquire and manage real estate assets, consisting primarily of Class A properties in the coastal regions of Greater Los Angeles, Orange County, San Diego County, the San Francisco Bay Area and Greater Seattle, which we believe have strategic advantages and strong barriers to entry. We own our interests in all of our properties through the Operating Partnership and the Finance Partnership and generally conduct substantially all of our operations through the Operating Partnership. We owned an approximate 98.0%, 97.9%, and 97.9% general partnership interest in the Operating Partnership as of September 30, 2018, December 31, 2017 and September 30, 2017. All of our properties are held in fee except for the thirteen office buildings that are held subject to long-term ground leases for the land.

Factors That May Influence Future Results of Operations

Development Program

We believe that a portion of our long-term future growth will continue to come from the completion of our in-process development projects and, subject to market conditions, executing on our future development pipeline, including expanding entitlements. Over the past several years, we increased our focus on development opportunities and expanded our future development pipeline through targeted acquisitions of development opportunities on the West Coast. This includes the acquisition of a 39-acre development site in South San Francisco, California on June 1, 2018 for a cash purchase price of approximately $308.2 million as discussed in “– Acquisitions” below.

We have a proactive planning process by which we continually evaluate the size, timing, costs and scope of our development program and, as necessary, scale activity to reflect the economic conditions and the real estate fundamentals that exist in our submarkets. We expect to execute on our development program with prudence and will be pursuing opportunities with attractive economic returns in strategic locations with proximity to public transportation or transportation access and retail amenities and in markets with strong fundamentals and visible demand. We plan to develop in phases and we generally favor starting projects with pre-leasing activity, as appropriate.

In-Process Development Projects - Tenant Improvement

During the nine months ended September 30, 2018, the following two development projects were moved from the under construction phase to the tenant improvement phase:

• 100 Hooper, SOMA, San Francisco, California, which we acquired in July 2015 and commenced construction on in November 2016. This project encompasses approximately 312,000 square feet of office and approximately 88,000 square feet of production, distribution and repair (“PDR”) space configured in two buildings with a total estimated investment of approximately $270.0 million. The office portion of the project is 100% pre-leased to Adobe Systems Inc. and the PDR space is38% leasedas of the date of this report. We commenced revenue recognition on the lease with Adobe Systems Inc. on October 1, 2018 and cash rents will commence in the first quarter of 2019 through the second quarter of 2020. The project is currently expected to be stabilized in the second quarter of 2019.

• The Exchange on 16th, Mission Bay, San Francisco, California, which we acquired in May 2014 and commenced construction on in June 2015. This project will encompass approximately 750,000 gross rentable square feet consisting of 736,000 square feet of office space and 14,000 square feet of retail space at a total estimated investment of $570.0 million. The office space in the project is 100% pre-leased to Dropbox, Inc. The lease with Dropbox, Inc. will commence in phases beginning in the fourth quarter of 2018 through the fourth quarter of 2019 with cash rents commencing in the third quarter of 2019 through the first quarter of 2020. The estimated stabilization dates for Phase I, Phase II, and Phase III are the second quarter of 2019, the fourth quarter of 2019, and the third quarter of 2020, respectively.

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In-Process Development Projects - Under Construction

As of September 30, 2018, we had threeprojects in our in-process development pipeline that were under construction.

• Academy on Vine - Phase I (Office and Retail) in Hollywood, California, which we acquired in 2013 and commenced construction on in January 2018. Phase I of this mixed-use project includes the project’s overall infrastructure and site work, approximately 306,000 square feet of office space and approximately 24,000 square feet of retail space for a total estimated investment of $260.0 million. Construction is currently in progress and the cold shell is currently expected to be ready for tenant improvements in the first half of 2020.

• 333 Dexter, South Lake Union, Washington, which we acquired in February 2015 and commenced construction on in June 2017. This project encompasses approximately 650,000 square feet of office space at a total estimated investment of $380.0 million. Construction is currently in progress and the cold shell is currently estimated to be ready for tenant improvements in the second half of 2019.

• One Paseo - Phases I & II (Retail and Residential), Del Mar Heights, San Diego, California, which we acquired in November 2007 and commenced construction on in December 2016. Phases I & II of this mixed-use project includes site work and related infrastructure for the entire project, as well as 608 residential units and approximately 96,000 square feet of retail space. The total estimated investment for these phases of the project is approximately $465.0 million. The project is expected to be stabilized in phases beginning in the first quarter of 2019 for the retail space through the third quarter of 2020 for the residential units. As of the date of this report, the retail space of the project was 82% leased.

Future Development Pipeline

As of September 30, 2018, our future development pipeline included seven future projects located in the San Francisco Bay Area, Greater Los Angeles and San Diego County with an aggregate cost basis of approximately $868.7 million at which we believe we could develop from 5.5 million rentable square feet to 6.5 million rentable square feet for a total estimated investment of $5.0 billion to $6.0 billion, depending on successfully obtaining entitlements and market conditions.

The following table sets forth information about our future development pipeline.

Future Development Pipeline (1)	Location	Approx. Developable Square Feet / Resi Units (1)	Total Costs as of 9/30/2018 ($ in millions)(2)
Greater Los Angeles
Academy on Vine - Phase II (Residential)	Hollywood	200 Resi Units	$	41.9
San Diego County
One Paseo - Phase III (Office)	Del Mar	285,000	72.8
2100 Kettner	Little Italy	175,000	24.6
9455 Towne Centre Drive	University Towne Center	150,000	15.7
Santa Fe Summit – Phases II and III	56 Corridor	600,000	79.9
San Francisco Bay Area
Kilroy Oyster Point	South San Francisco	2,500,000	386.2
Flower Mart	SOMA	TBD	247.6
TOTAL:			$	868.7

________________________

(1) The developable square feet and scope of projects could change materially from estimated data provided due to one or more of the following: any significant changes in the economy, market conditions, our markets, tenant requirements and demands, construction costs, new supply, regulatory and entitlement processes or project design.

(2) Represents cash paid and costs incurred, including accrued liabilities in accordance with GAAP, as of September 30, 2018.

Fluctuations in our development activities could cause fluctuations in the average development asset balances qualifying for interest and other carrying cost and internal cost capitalization in future periods. During the three and ninemonths ended September 30, 2018, we capitalized interest on in-process development projects and development pipeline projects with an average aggregate cost basis of approximately $1.8 billion and $1.5 billion, respectively, asit was determined these projects qualified for interest and other carrying cost capitalization under GAAP. During the three and ninemonths ended September 30, 2017, we capitalized interest on in-process development projects and future development pipeline projects with an average aggregate cost basis of approximately $1.0 billion, asit was determined these projects qualified for interest and other carrying cost capitalization under GAAP. For the three and ninemonths ended September 30, 2018, we capitalized $19.2 million and $48.5 million,

28

respectively, of interest to our qualifying development projects. For the three and ninemonths ended September 30, 2017, we capitalized $12.2 million and $33.1 million, respectively, of interest to our qualifying development projects. For the three and ninemonths ended September 30, 2018, we capitalized $5.3 million and $18.6 million, respectively, of internal costs to our qualifying development projects. For the three and ninemonths ended September 30, 2017, we capitalized $4.9 million and $15.7 million, respectively, of internal costs to our qualifying development projects.

Capital Recycling Program. We continuously evaluate opportunities for the potential disposition of properties and undeveloped land in our portfolio or the formation of strategic ventures with the intent of recycling the proceeds generated into capital used to fund new operating and development acquisitions, to finance development and redevelopment expenditures, to repay long-term debt and for other general corporate purposes. As part of this strategy, we attempt to enter into Section 1031 Exchanges and other tax deferred transaction structures, when possible, to defer some or all of the taxable gains on the sales, if any, for federal and state income tax purposes. See the “Liquidity and Capital Resources of the Operating Partnership – Liquidity Sources” section for further discussion of the program.

The timing of any potential future disposition or strategic venture transactions will depend on market conditions and other factors, including but not limited to our capital needs and our ability to defer some or all of the taxable gains on the sales. We cannot assure that we will dispose of any additional properties, enter into any additional strategic ventures, or that we will be able to identify and complete the acquisition of a suitable replacement property to effect a Section 1031 Exchange or be able to use other tax deferred structures in connection with our strategy.

Acquisitions. During the nine months ended September 30, 2018, we acquired three office buildings in South San Francisco, California for a purchase price of $111.0 million. In addition, we separately acquired a 39-acre development site adjacent to these office buildings for a cash purchase price of approximately $308.2 million from an unrelated seller.

As part of our growth strategy, which is highly dependent on market conditions and business cycles, among other factors, we continue to evaluate strategic opportunities and remain a disciplined buyer of development and redevelopment opportunities as well as value-add or strategic operating properties.  We continue to focus on growth opportunities in West Coast markets populated by knowledge and creative based tenants in a variety of industries, including technology, media, healthcare, life sciences, entertainment and professional services.  Against the backdrop of market volatility, we expect to manage a strong balance sheet, execute on our development program and selectively evaluate opportunities that either add immediate Net Operating Income to our portfolio or play a strategic role in our future growth.

In connection with our growth strategy, we often have one or more potential acquisitions of properties and/or undeveloped land under consideration that are in varying stages of negotiation and due diligence review, or under contract, at any point in time. However, we cannot provide assurance that we will enter into any agreements to acquire those properties or undeveloped land or, if we do, that those will be completed. In addition, acquisitions are subject to various risks and uncertainties and we may be unable to complete an acquisition after making a nonrefundable deposit or incurring acquisition-related costs. As of September 30, 2018, we had nonrefundable deposits of $15.0 million related to the future acquisition of an operating property with a purchase price of $146.0 million that is currently expected to close in December 2018.

Incentive Compensation. Our Executive Compensation Committee determines compensation, including cash bonuses and equity incentives, for our executive officers. For 2018, the annual cash bonus program was structured to allow the Executive Compensation Committee to evaluate a variety of key quantitative and qualitative metrics at the end of the year and make a determination based on the Company’s and management’s overall performance. Our Executive Compensation Committee also grants equity incentive awards from time to time that include performance-based and/or market-measure based vesting requirements and/or time-based vesting requirements. As a result, accrued incentive compensation and compensation expense for future awards may be affected by our operating and development performance, financial results, stock price, performance against applicable performance-based vesting goals, market conditions, liquidity measures, and other factors. Consequently, we cannot predict the amounts that will be recorded in future periods related to such incentive compensation.

As of September 30, 2018, there was approximately $24.3 million of total unrecognized compensation cost related to outstanding nonvested shares of restricted common stock and RSUs issued under share-based compensation arrangements. Those costs are expected to be recognized over a weighted-average period of 1.8 years. The $24.3 million of unrecognized compensation cost is subject to fluctuation based on the ultimate outcome of performance measures for awards that are still in the performance period and also does not reflect the future compensation cost for any potential share-based awards that may be issued subsequent to September 30, 2018. Share-based compensation expense for potential future awards could be affected by our operating and development performance, financial results, stock price, performance against applicable performance-based vesting goals, market conditions and other factors.

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Information on Leases Commenced and Executed

Leasing Activity and Changes in Rental Rates. The amount of net rental income generated by our properties depends principally on our ability to maintain the occupancy rates of currently leased space and to lease currently available space, newly developed or redeveloped properties, newly acquired properties with vacant space, and space available from unscheduled lease terminations. The amount of rental income we generate also depends on our ability to maintain or increase rental rates in our submarkets. Negative trends in one or more of these factors could adversely affect our rental income in future periods. The following tables set forth certain information regarding leasing activity for our stabilized portfolio during the three and nine months ended September 30, 2018.

For Leases Commenced

	1st & 2nd Generation (1)(2)						2nd Generation (1)(2)
	Number of Leases (3)		Rentable Square Feet (3)		Retention Rates (4)		TI/LC per Sq. Ft. (5)		TI/LC Per Sq. Ft. / Year		Changes in Rents (6)(7)		Changes in Cash Rents (8)		Weighted Average Lease Term (in months)
	New	Renewal	New	Renewal
Three Months Ended September 30, 2018	14	9	231,514	154,549	33.0	%	$	39.31	$	6.94	(2.8	)%	(13.6	)%	68
Nine Months Ended September 30, 2018	57	40	630,883	846,490	48.9	%	$	47.65	$	7.15	20.7	%	7.0	%	80

For Leases Executed ⁽⁹⁾  

	1st & 2nd Generation (1)(2)				2nd Generation (1)(2)
	Number of Leases (3)		Rentable Square Feet (3)		TI/LC per Sq. Ft. (5)		TI/LC Per Sq. Ft. / Year		Changes in Rents (6)(7)		Changes in Cash Rents (8)		Weighted Average Lease Term (in months)
	New	Renewal	New	Renewal
Three Months Ended September 30, 2018	20	9	180,408	154,549	$	61.54	$	7.94	35.2	%	16.0	%	93
Nine Months Ended September 30, 2018 (10)	65	40	1,104,906	846,490	$	53.72	$	6.65	30.6	%	11.0	%	97

________________________

(1) Includes 100% of consolidated property partnerships.

(2) First generation leasing includes space where we have made capital expenditures that result in additional revenue generated when the space is re-leased. Second generation leasing includes space where we have made capital expenditures to maintain the current market revenue stream.

(3) Represents leasing activity for leases that commenced or were signed during the period, including first and second generation space, net of month-to-month leases. Excludes leasing on new construction.

(4) Calculated as the percentage of space either renewed or expanded into by existing tenants or subtenants at lease expiration.

(5) Tenant improvements and leasing commissions per square foot excluding tenant-funded tenant improvements and certain tenant improvements used to fund base building improvements.

(6) Calculated as the change between GAAP rents for new/renewed leases and the expiring GAAP rents for the same space. Excludes leases for which the space was vacant longer than one year or vacant when the property was acquired.

(7) Excludes commenced and executed leases of approximately 49,557 and 28,205 rentable square feet, respectively, for the three months ended September 30, 2018, and 179,177 and 189,847 rentable square feet, respectively, for the nine months ended September 30, 2018, for which the space was vacant longer than one year or being leased for the first time. Space vacant for more than one year is excluded from our change in rents calculations to provide a more meaningful market comparison.

(8) Calculated as the change between stated rents for new/renewed leases and the expiring stated rents for the same space. Excludes leases for which the space was vacant longer than one year or vacant when the property was acquired.

(9) For the three months ended September 30, 2018, 15 leases totaling 155,396 rentable square feet were signed but not commenced as of September 30, 2018. For the nine months ended September 30, 2018, 35 leases totaling 783,649 rentable square feet were signed but not commenced as of September 30, 2018.

(10) Excludes a 110,000 square foot lease executed at a property located San Francisco that the Company expects to acquire by the end of 2018.

As of September 30, 2018, we believe that the weighted average cash rental rates for our total stabilized portfolio are approximately 19% below the current average market rental rates. Individual properties within any particular submarket presently may be leased either above, below, or at the current market rates within that submarket, and the average rental rates for individual submarkets may be above, below, or at the average cash rental rate of our portfolio.

Our rental rates and occupancy are impacted by general economic conditions, including the pace of regional economic growth and access to capital. Therefore, we cannot give any assurance that leases will be renewed or that available space will be re-leased at rental rates equal to or above the current market rates. Additionally, decreased demand and other negative trends or unforeseeable events that impair our ability to timely renew or re-lease space could have further negative effects on our future financial condition, results of operations, and cash flows.

Scheduled Lease Expirations. The following tables set forth certain information regarding our lease expirations for our stabilized portfolio for the remainder of 2018 and the next five years and by region for the remainder of 2018 and in 2019.

30

Lease Expirations ⁽¹⁾ 

Year of Lease Expiration	Number of Expiring Leases	Total Square Feet	% of Total Leased Sq. Ft.		Annualized Base Rent (2)(3)		% of Total Annualized Base Rent (2)		Annualized Base Rent per Sq. Ft. (2)
					(in thousands)
Remainder of 2018 (4)	22	296,036	2.4	%	$	11,868	2.1	%	$	40.09
2019 (4)	105	1,460,791	11.5	%	60,539		10.6	%	$	41.44
2020	106	1,597,639	12.6	%	65,828		11.4	%	$	41.20
2021	91	921,638	7.2	%	39,862		7.0	%	$	43.25
2022	62	771,631	6.1	%	31,713		5.5	%	$	41.10
2023	75	1,290,842	10.2	%	67,023		11.7	%	$	51.92
Total	461	6,338,577	50.0	%	$	276,833	48.3	%	$	43.67

Year (4)	Region	# of Expiring Leases	Total Square Feet	% of Total Leased Sq. Ft.		Annualized Base Rent (2)(3)		% of Total Annualized Base Rent (2)		Annualized Rent per Sq. Ft. (2)
2018	Greater Los Angeles	11	59,298	0.5	%	$	2,263	0.4	%	$	38.16
	Orange County	—	—	—	%	—		—	%	$	—
	San Diego	3	102,189	0.8	%	3,874		0.7	%	$	37.91
	San Francisco Bay Area	4	76,849	0.6	%	4,103		0.7	%	$	53.39
	Greater Seattle	4	57,700	0.5	%	1,628		0.3	%	$	28.21
	Total	22	296,036	2.4	%	$	11,868	2.1	%	$	40.09
2019	Greater Los Angeles	50	305,503	2.4	%	$	10,679	1.9	%	$	34.96
	Orange County	6	77,875	0.6	%	3,235		0.6	%	$	41.54
	San Diego	15	199,286	1.6	%	7,293		1.3	%	$	36.60
	San Francisco Bay Area	18	683,090	5.4	%	32,840		5.7	%	$	48.08
	Greater Seattle	16	195,037	1.5	%	6,492		1.1	%	$	33.29
	Total	105	1,460,791	11.5	%	$	60,539	10.6	%	$	41.44

________________________ 

(1) For leases that have been renewed early with existing tenants, the expiration date and annualized base rent information presented takes into consideration the renewed lease terms. Excludes leases not commenced as of September 30, 2018, space leased under month-to-month leases, storage leases, vacant space and future lease renewal options not executed as of September 30, 2018.

(2) Annualized base rent includes the impact of straight-lining rent escalations and the amortization of free rent periods and excludes the impact of the following: amortization of deferred revenue related tenant-funded tenant improvements, amortization of above/below market rents, amortization for lease incentives due under existing leases and expense reimbursement revenue. Additionally, the underlying leases contain various expense structures including full service gross, modified gross and triple net. Percentages represent percentage of total portfolio annualized contractual base rental revenue. For additional information on tenant improvement and leasing commission costs incurred by the Company for the current reporting period, please see further discussion under the caption “Information on Leases Commenced and Executed.”

(3) Includes 100% of annualized base rent of consolidated property partnerships.

(4) Adjusting for leases executed as of September 30, 2018 but not yet commenced, the remaining 2018 and 2019 expirations would be reduced by 93,993 square feet and 598,491 square feet, respectively.

In addition to the 0.9 million rentable square feet, or 6.5%, of currently available space in our stabilized portfolio, leases representing approximately 2.4% and 11.5% of the occupied square footage of our stabilized portfolio are scheduled to expire during the remainder of 2018 and in 2019, respectively. The leases scheduled to expire during the remainder of 2018 and in 2019 represent approximately 1.8 million rentable square feet or 12.7% of our total annualized base rental revenue. Individual properties within any particular submarket presently may be leased either above, below, or at the current quoted market rates within that submarket. Our ability to re-lease available space depends upon both general market conditions and the market conditions in the specific regions in which individual properties are located.

For the approximately 0.3 million rentable square feet or 2.1% of our total annualized base rental revenue scheduled to expire during the remainder of 2018, we believe that the weighted average cash rental rates are approximately 5% below market.

For the approximately 1.5 million rentable square feet or 10.6% of our total annualized base rental revenue scheduled to expire in 2019 we believe that the weighted average cash rental rates are overall approximately 20% below current average market rental rates, primarily due to our Los Angeles and San Francisco submarkets where we currently believe these expiring leases are approximately 20% below market and 35% below market, respectively.

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Stabilized Portfolio Information

As of September 30, 2018, our stabilized portfolio was comprised of 104 office properties encompassing an aggregate of approximately 13.9 million rentable square feet and 200 residential units at our residential tower in Hollywood, California. Our stabilized portfolio includes all of our properties with the exception of development and redevelopment properties currently committed for construction, under construction, or in the tenant improvement phase, undeveloped land and real estate assets held for sale. We define redevelopment properties as those properties for which we expect to spend significant development and construction costs on the existing or acquired buildings pursuant to a formal plan, the intended result of which is a higher economic return on the property. We define properties in the tenant improvement phase as properties that we are developing or redeveloping where the project has reached cold shell condition and is ready for tenant improvements, which may require additional major base building construction before being placed in service. Projects in the tenant improvement phase are added to our stabilized portfolio once the project reaches the earlier of 95% occupancy or one year from the date of the cessation of major base building construction activities. Costs capitalized to construction in progress for development and redevelopment properties are transferred to land and improvements, buildings and improvements, and deferred leasing costs on our consolidated balance sheets as the historical cost of the property as the projects are placed in service.

We did not have any redevelopment or held for sale properties at September 30, 2018. Our stabilized portfolio also excludes our future development pipeline, which as of September 30, 2018 was comprised of seven potential development sites, representing approximately 80 gross acres of undeveloped land on which we believe we have the potential to develop from 5.5 million rentable square feet to 6.5 million rentable square feet, depending upon economic conditions.

As of September 30, 2018, the following properties were excluded from our stabilized portfolio:

	Number of Properties/Projects	Estimated Rentable Square Feet (1)
In-process development projects - tenant improvement (2)	2	1,150,000
In-process development projects - under construction (3)	3	956,000

________________________

(1) Estimated rentable square feet upon completion.

(2) Includes 86,000 square feet of Production, Distribution, and Repair (“PDR”) space at 100 Hooper.

(3) In addition to the estimated office and PDR rentable square feet noted above, development projects under construction also include 120,000 square feet of retail space and 608 residential units.

The following table reconciles the changes in the rentable square feet in our stabilized office portfolio of operating properties from September 30, 2017 to September 30, 2018:

	Number of Buildings	Rentable Square Feet
Total as of September 30, 2017	101	13,720,598
Acquisitions	3	145,530
Remeasurement	—	25,365
Total as of September 30, 2018 (1)	104	13,891,493

________________________

(1) Includes four properties owned by consolidated property partnerships.

Occupancy Information

The following table sets forth certain information regarding our stabilized portfolio:

Region	Number of Buildings	Rentable Square Feet	Occupancy at (1)
			9/30/2018		6/30/2018		12/31/2017
Greater Los Angeles	36	4,181,805	94.7	%	94.3	%	93.3	%
Orange County	1	271,556	89.6	%	89.6	%	86.6	%
San Diego County	21	2,054,693	92.6	%	98.5	%	97.4	%
San Francisco Bay Area	34	5,317,300	93.8	%	93.8	%	96.1	%
Greater Seattle	12	2,066,139	91.5	%	90.4	%	95.4	%
Total Stabilized Portfolio	104	13,891,493	93.5	%	94.0	%	95.2	%

32

	Average Occupancy
	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Stabilized Portfolio(1)	92.9	%	93.9	%	94.1	%	94.1	%
Same Store Portfolio(2)	92.9	%	94.3	%	94.2	%	94.8	%
Residential Portfolio(3)	83.1	%	76.3	%	83.3	%	68.2	%

________________________

(1) Occupancy percentages reported are based on our stabilized office portfolio as of the end of the period presented.

(2) Occupancy percentages reported are based on office properties owned and stabilized as of January 1, 2017 and still owned and stabilized as of September 30, 2018 and exclude our residential tower. See discussion under “Results of Operations” for additional information.

(3) Our residential portfolio consists of our 200-unit residential tower located in Hollywood, California.

Significant Tenants

The following table sets forth information about our fifteen largest tenants based upon annualized base rental revenues, as defined below, as of September 30, 2018.

Tenant Name	Region	Annualized Base Rental Revenue(1)(2)		Rentable Square Feet	Percentage of Total Annualized Base Rental Revenue(2)		Percentage of Total Rentable Square Feet
Adobe Systems, Inc. (3)	San Francisco Bay Area / Greater Seattle	$	28,625	412,302	5.0	%	3.0	%
LinkedIn Corporation	San Francisco Bay Area	28,344		663,239	5.0	%	4.8	%
salesforce.com, inc.	San Francisco Bay Area	23,449		444,273	4.1	%	3.2	%
DIRECTV, LLC	Greater Los Angeles	23,152		684,411	4.0	%	4.9	%
Box, Inc.	San Francisco Bay Area	22,441		371,792	3.9	%	2.7	%
Riot Games, Inc.	Greater Los Angeles	15,514		251,509	2.7	%	1.8	%
Synopsys, Inc.	San Francisco Bay Area	15,492		340,913	2.7	%	2.5	%
Dropbox, Inc.	San Francisco Bay Area	13,960		264,888	2.4	%	1.9	%
Viacom International, Inc.	Greater Los Angeles	13,718		211,343	2.4	%	1.5	%
AppDynamics, Inc.	San Francisco Bay Area	10,792		147,288	1.9	%	1.1	%
Concur Technologies	Greater Seattle	10,643		288,322	1.9	%	2.1	%
Capital One, N.A.	San Francisco Bay Area	9,170		117,993	1.6	%	0.8	%
AMN Healthcare, Inc.	San Diego County	9,001		176,075	1.6	%	1.3	%
Stanford University School of Medicine	San Francisco Bay Area	8,461		128,688	1.5	%	0.9	%
Neurocrine Biosciences, Inc.	San Diego County	7,246		161,093	1.3	%	1.2	%
Total Top Fifteen Tenants		$	240,008	4,664,129	42.0	%	33.7	%

________________________

(1) Includes 100% of annualized base rental revenues of consolidated property partnerships.

(2) Annualized base rental revenue includes the impact of straight-lining rent escalations and the amortization of free rent periods and excludes the impact of the following: amortization of deferred revenue related tenant-funded tenant improvements, amortization of above/below market rents, amortization for lease incentives due under existing leases, and expense reimbursement revenue. Excludes month-to-month leases and vacant space as of September 30, 2018.

(3) Includes annualized base rental revenues from the lease at 100 Hooper, which commenced in October 2018.

33

Results of Operations

Net Operating Income

Management internally evaluates the operating performance and financial results of our stabilized portfolio based on Net Operating Income. We define “Net Operating Income” as consolidated operating revenues (rental income, tenant reimbursements and other property income) less consolidated operating expenses (property expenses, real estate taxes, provision for bad debts and ground leases).

Net Operating Income is considered by management to be an important and appropriate supplemental performance measure to net income because we believe it helps both investors and management to understand the core operations of our properties excluding corporate and financing-related costs and non-cash depreciation and amortization. Net Operating Income is an unlevered operating performance metric of our properties and allows for a useful comparison of the operating performance of individual assets or groups of assets. This measure thereby provides an operating perspective not immediately apparent from GAAP income from operations or net income. In addition, Net Operating Income is considered by many in the real estate industry to be a useful starting point for determining the value of a real estate asset or group of assets. Other real estate companies may use different methodologies for calculating Net Operating Income, and accordingly, our presentation of Net Operating Income may not be comparable to other real estate companies. Because of the exclusion of the items shown in the reconciliation below, Net Operating Income should only be used as a supplemental measure of our financial performance and not as an alternative to GAAP income from operations or net income.

Management further evaluates Net Operating Income by evaluating the performance from the following property groups:

• Same Store Properties – includes the consolidated results of all of the properties that were owned and included in our stabilized portfolio for two comparable reporting periods, i.e., owned and included in our stabilized portfolio as of January 1, 2017 and still owned and included in the stabilized portfolio as of September 30, 2018, including our residential tower in Hollywood, California;

• Stabilized Development Properties – includes the results generated by the one office development project that was added to the stabilized portfolio in the first quarter of 2017;

• Acquisition Properties – includes the results, from the dates of acquisition through the periods presented, for the three office buildings we acquired in January 2018; and

• Dispositions and Other Properties – includes the results of the ten properties disposed of in the third quarter of 2017, the one property disposed of during the first quarter of 2017 and expenses for certain of our in-process and future development projects.

The following table sets forth certain information regarding the property groups within our stabilized office portfolio as of September 30, 2018:

Group	# of Buildings	Rentable Square Feet
Same Store Properties	98	13,380,604
Stabilized Development Properties	3	365,359
Acquisition Properties	3	145,530
Total Stabilized Office Portfolio	104	13,891,493

34

Comparison of the Three Months Ended September 30, 2018 to the Three Months Ended September 30, 2017

The following table summarizes our Net Operating Income, as defined, for our total portfolio for the three months ended September 30, 2018 and 2017.

	Three Months Ended September 30,						Dollar Change			Percentage Change
	2018			2017
	($ in thousands)
Reconciliation of Net Income Available to Common Stockholders to Net Operating Income, as defined:
Net Income Available to Common Stockholders	$	34,400		$	66,558		$	(32,158	)	(48.3	)%
Preferred dividends	—			808			(808		)	(100.0	)%
Original issuance costs of redeemed preferred stock and preferred units	—			3,744			(3,744		)	(100.0	)%
Net income attributable to Kilroy Realty Corporation	$	34,400		$	71,110		$	(36,710	)	(51.6	)%
Net income attributable to noncontrolling common units of the Operating Partnership	691			1,394			(703		)	(50.4	)%
Net income attributable to noncontrolling interests in consolidated property partnerships	3,219			2,984			235			7.9	%
Net income	$	38,310		$	75,488		$	(37,178	)	(49.3	)%
Unallocated expense (income):
General and administrative expenses	19,277			14,514			4,763			32.8	%
Depreciation and amortization	62,700			62,567			133			0.2	%
Interest income and other net investment gain/loss	(342		)	(1,526		)	1,184			(77.6	)%
Interest expense	11,075			16,151			(5,076		)	(31.4	)%
Net gain on sale of land	—			(449		)	449			(100.0	)%
Gains on sales of depreciable operating properties	—			(37,250		)	37,250			(100.0	)%
Net Operating Income, as defined	$	131,020		$	129,495		$	1,525		1.2	%

The following tables summarize our Net Operating Income, as defined, for our total portfolio for the three months ended September 30, 2018 and 2017.

	Three Months Ended September 30,
	2018											2017
	Same Store		Stabilized Develop-ment		Acquisi-tion Properties		Disposi-tions & Other			Total		Same Store		Stabilized Develop-ment		Acquisi-tion Properties		Disposi-tions & Other		Total
	(in thousands)
Operating revenues:
Rental income	$	154,024	$	6,603	$	1,661	$	—		$	162,288	$	150,661	$	5,354	$	—	$	3,939	$	159,954
Tenant reimbursements	21,185		242		327		—			21,754		19,211		—		—		454		19,665
Other property income	2,515		5		—		—			2,520		1,693		—		—		222		1,915
Total	177,724		6,850		1,988		—			186,562		171,565		5,354		—		4,615		181,534
Property and related expenses:
Property expenses	33,502		1,354		136		171			35,163		31,148		1,106		—		816		33,070
Real estate taxes	16,892		133		309		128			17,462		14,983		731		—		657		16,371
Provision for bad debts	107		1,239		—		(8		)	1,338		1,020		—		—		16		1,036
Ground leases	1,579		—		—		—			1,579		1,562		—		—		—		1,562
Total	52,080		2,726		445		291			55,542		48,713		1,837		—		1,489		52,039
Net Operating Income, as defined	$	125,644	$	4,124	$	1,543	$	(291	)	$	131,020	$	122,852	$	3,517	$	—	$	3,126	$	129,495

35

	Three Months Ended September 30, 2018 as compared to the Three Months Ended September 30, 2017
	Same Store					Stabilized Development					Acquisition Properties				Dispositions & Other					Total
	Dollar Change			Percent Change		Dollar Change			Percent Change		Dollar Change		Percent Change		Dollar Change			Percent Change		Dollar Change		Percent Change
	($ in thousands)
Operating revenues:
Rental income	$	3,363		2.2	%	$	1,249		23.3	%	$	1,661	100.0	%	$	(3,939	)	(100.0	)%	$	2,334	1.5	%
Tenant reimbursements	1,974			10.3	%	242			—	%	327		100.0	%	(454		)	(100.0	)%	2,089		10.6	%
Other property income	822			48.6	%	5			100.0	%	—		—	%	(222		)	(100.0	)%	605		31.6	%
Total	6,159			3.6	%	1,496			27.9	%	1,988		100.0	%	(4,615		)	(100.0	)%	5,028		2.8	%
Property and related expenses:
Property expenses	2,354			7.6	%	248			22.4	%	136		100.0	%	(645		)	(79.0	)%	2,093		6.3	%
Real estate taxes	1,909			12.7	%	(598		)	(81.8	)%	309		100.0	%	(529		)	(80.5	)%	1,091		6.7	%
Provision for bad debts	(913		)	(89.5	)%	1,239			100.0	%	—		—	%	(24		)	(150.0	)%	302		29.2	%
Ground leases	17			1.1	%	—			—	%	—		—	%	—			—	%	17		1.1	%
Total	3,367			6.9	%	889			48.4	%	445		100.0	%	(1,198		)	(80.5	)%	3,503		6.7	%
Net Operating Income, as defined	$	2,792		2.3	%	$	607		17.3	%	$	1,543	100.0	%	$	(3,417	)	(109.3	)%	$	1,525	1.2	%

Net Operating Income increased $1.5 million, or 1.2%, for the three months ended September 30, 2018 as compared to the three months ended September 30, 2017 resulting from:

• An increase of $2.8 million attributable to the Same Store Properties driven by the following activity:

• An increase in rental income of $3.4 million primarily due to:

• $4.9 million increase from new leases and renewals at higher rates across all regions; partially offset by

• $1.4 million decrease primarily due to an early lease termination for one tenant in San Diego County and lease expirations for two tenants at two properties in the Greater Seattle and San Francisco Bay Area;

• An increase in tenant reimbursements of $2.0 million primarily due to higher operating expenses and real estate taxes at a number of properties across the portfolio;

• An increase in other property income of $0.8 million primarily due to higher early termination fee income from two tenants at two properties in the San Francisco Bay Area and Greater Seattle in 2018; partially offset by

• An increase in property and related expenses of $3.4 million primarily due to the following:

• $2.4 million increase in property expenses primarily due to an increase in reimbursable expenses such as contract services, security, janitorial, insurance, repairs and maintenance, including a $0.4 million increase in non-recurring expenses;

• $1.9 million increase in real estate taxes primarily due to the following:

• $0.6 million of higher real estate taxes in 2018 due to regular annual property tax increases;

• One property’s 2017 real estate taxes being lower in 2017 by $2.5 million as a result of improvements determined to be non-assessable, partially offset by $1.2 million of higher supplemental tax adjustments made in 2017;

• $0.9 million decrease in the provision for bad debts primarily due to a $0.4 million decrease in the provision for one tenant due to the assignment of its lease to a credit tenant and an overall net decrease in the provision based on our evaluation of outstanding receivables at the end of each period;

• An increase in Net Operating Income of $0.6 million attributable to the Stabilized Development Properties primarily due to the following:

36

• $1.2 million increase in rental income resulting from full occupancy in 2018 compared to partial occupancy in 2017;

• $0.6 million decrease in real estate taxes primarily due to a reversal of real estate taxes in 2018 resulting from favorable timing of supplemental tax assessments; offset by

• $1.2 million increase in the provision for bad debts primarily due to a provision recorded for one tenant;

• An increase in Net Operating Income of $1.5 million attributable to the Acquisition Properties; and

• A decrease in Net Operating Income of $3.4 million attributable to the Dispositions and Other Properties.

Other Expenses and Income

General and Administrative Expenses

General and administrative expenses increased by approximately $4.8 million, or 32.8%, for the three months ended September 30, 2018 compared to the three months ended September 30, 2017 primarily due to the following:

• An increase of approximately $1.9 million resulting from higher professional service costs primarily related to legal costs incurred in connection with a previously disclosed litigation matter; and

• An increase of approximately $2.9 million due to higher stock compensation amortization as well as higher compensation and office expenses primarily related to the growth of the Company.

Interest Expense

The following table sets forth our gross interest expense, including debt discounts/premiums and deferred financing cost amortization, and capitalized interest, including capitalized debt discounts/premiums and deferred financing cost amortization for the three months ended September 30, 2018 and 2017:

	Three Months Ended September 30,
	2018			2017			Dollar Change			Percentage Change
	(in thousands)
Gross interest expense	$	30,231		$	28,331		$	1,900		6.7	%
Capitalized interest and deferred financing costs	(19,156		)	(12,180		)	(6,976		)	57.3	%
Interest expense	$	11,075		$	16,151		$	(5,076	)	(31.4	)%

Gross interest expense, before the effect of capitalized interest and deferred financing costs, increased $1.9 million, or 6.7%, for the three months ended September 30, 2018 as compared to the three months ended September 30, 2017 due to an increase in our weighted average debt balance for the three months ended September 30, 2018.

Capitalized interest and deferred financing costs increased $7.0 million, or 57.3%, for the three months ended September 30, 2018 compared to the three months ended September 30, 2017 primarily due to an increase in the average development asset balances qualifying for interest capitalization during the three months ended September 30, 2018. During the threemonths ended September 30, 2018 and 2017, we capitalized interest on in-process development projects and future development pipeline projects with an average aggregate cost basis of approximately $1.8 billion and $1.0 billion, respectively.

Net Income Attributable to Noncontrolling Interests in Consolidated Property Partnerships

Net income attributable to noncontrolling interests in consolidated property partnerships remained generally consistent for the three months ended September 30, 2018 compared to the three months ended September 30, 2017. The amounts reported for the three months ended September 30, 2018 and 2017 are comprised of the noncontrolling interests’ share of net income for 100 First Street Member, LLC (“100 First LLC”), 303 Second Street Member (“303 Second LLC”) and Redwood City Partners, LLC (“Redwood LLC”).

37

Comparison of the Nine Months Ended September 30, 2018 to the Nine Months Ended September 30, 2017

The following table summarizes our Net Operating Income, as defined, for our total portfolio for the nine months ended September 30, 2018 and 2017.

	Nine Months Ended September 30,						Dollar Change			Percentage Change
	2018			2017
	($ in thousands)
Reconciliation of Net Income Available to Common Stockholders to Net Operating Income, as defined:
Net Income Available to Common Stockholders	$	98,195		$	122,720		$	(24,525	)	(20.0	)%
Preferred dividends	—			5,774			(5,774		)	(100.0	)%
Original issuance costs of redeemed preferred stock and preferred units	—			7,589			(7,589		)	(100.0	)%
Net income attributable to Kilroy Realty Corporation	$	98,195		$	136,083		$	(37,888	)	(27.8	)%
Net income attributable to noncontrolling common units of the Operating Partnership	2,008			2,633			(625		)	(23.7	)%
Net income attributable to noncontrolling interests in consolidated property partnerships	10,833			9,359			1,474			15.7	%
Net income	$	111,036		$	148,075		$	(37,039	)	(25.0	)%
Unallocated expense (income):
General and administrative expenses	56,599			43,750			12,849			29.4	%
Depreciation and amortization	189,421			185,737			3,684			2.0	%
Interest income and other net investment gains	(1,147		)	(3,629		)	2,482			(68.4	)%
Interest expense	37,285			51,476			(14,191		)	(27.6	)%
Net gain on sale of land	—			(449		)	449			(100.0	)%
Gains on sales of depreciable operating properties	—			(39,507		)	39,507			(100.0	)%
Net Operating Income, as defined	$	393,194		$	385,453		$	7,741		2.0	%

The following tables summarize our Net Operating Income, as defined, for our total portfolio for the nine months ended September 30, 2018 and 2017.

	Nine Months Ended September 30,
	2018											2017
	Same Store		Stabilized Develop-ment		Acquisi-tion Properties		Dispositi-ons & Other			Total		Same Store		Stabilized Develop-ment		Acquisi-tion Properties		Dispositi-ons & Other		Total
	(in thousands)
Operating revenues:
Rental income	$	465,886	$	19,291	$	4,497	$	—		$	489,674	$	448,457	$	15,255	$	—	$	11,815	$	475,527
Tenant reimbursements	59,313		323		911		(76		)	60,471		56,794		—		—		1,434		58,228
Other property income	6,303		4		—		4			6,311		6,390		9		—		1,286		7,685
Total	531,502		19,618		5,408		(72		)	556,456		511,641		15,264		—		14,535		541,440
Property and related expenses:
Property expenses	95,114		3,653		387		247			99,401		92,003		2,971		—		2,641		97,615
Real estate taxes	49,486		1,586		751		598			52,421		46,919		2,126		—		1,833		50,878
Provision for bad debts	5,458		1,239		—		17			6,714		2,651		—		—		92		2,743
Ground leases	4,726		—		—		—			4,726		4,751		—		—		—		4,751
Total	154,784		6,478		1,138		862			163,262		146,324		5,097		—		4,566		155,987
Net Operating Income, as defined	$	376,718	$	13,140	$	4,270	$	(934	)	$	393,194	$	365,317	$	10,167	$	—	$	9,969	$	385,453

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	Nine Months Ended September 30, 2018 as compared to the Nine Months Ended September 30, 2017
	Same Store					Stabilized Development					Acquisition Properties				Dispositions & Other					Total
	Dollar Change			Percent Change		Dollar Change			Percent Change		Dollar Change		Percent Change		Dollar Change			Percent Change		Dollar Change			Percent Change
	($ in thousands)
Operating revenues:
Rental income	$	17,429		3.9	%	$	4,036		26.5	%	$	4,497	100.0	%	$	(11,815	)	(100.0	)%	$	14,147		3.0	%
Tenant reimbursements	2,519			4.4	%	323			100.0	%	911		100.0	%	(1,510		)	(105.3	)%	2,243			3.9	%
Other property income	(87		)	(1.4	)%	(5		)	(55.6	)%	—		—	%	(1,282		)	(99.7	)%	(1,374		)	(17.9	)%
Total	19,861			3.9	%	4,354			28.5	%	5,408		100.0	%	(14,607		)	(100.5	)%	15,016			2.8	%
Property and related expenses:
Property expenses	3,111			3.4	%	682			23.0	%	387		100.0	%	(2,394		)	(90.6	)%	1,786			1.8	%
Real estate taxes	2,567			5.5	%	(540		)	(25.4	)%	751		100.0	%	(1,235		)	(67.4	)%	1,543			3.0	%
Provision for bad debts	2,807			105.9	%	1,239			100.0	%	—		—	%	(75		)	(81.5	)%	3,971			144.8	%
Ground leases	(25		)	(0.5	)%	—			—	%	—		—	%	—			—	%	(25		)	(0.5	)%
Total	8,460			5.8	%	1,381			27.1	%	1,138		100.0	%	(3,704		)	(81.1	)%	7,275			4.7	%
Net Operating Income, as defined	$	11,401		3.1	%	$	2,973		29.2	%	$	4,270	100.0	%	$	(10,903	)	(109.4	)%	$	7,741		2.0	%

Net Operating Income increased $7.7 million, or 2.0%, for the nine months ended September 30, 2018 as compared to the nine months ended September 30, 2017 primarily resulting from:

• An increase of $11.4 million attributable to the Same Store Properties primarily resulting from:

• An increase in rental income of $17.4 million primarily due to the following:

• $17.2 million increase due to new leases and renewals at higher rates across all regions;

• $0.6 million increase due to an increase in occupancy primarily related to three properties, each in different submarkets; partially offset by

• $0.4 million decrease in parking income primarily due to lower occupancy at one property;

• An increase in tenant reimbursements of $2.5 million primarily due to $3.0 million of higher operating expenses and $0.3 million of higher reimbursable real estate taxes offset by a $0.8 million decrease due to lower occupancy, partially offset by

• An increase in property and related expenses of $8.5 million primarily due to the following:

• $3.1 million increase in property expenses primarily due to an increase in certain recurring reimbursable operating costs related to security, parking, janitorial, contract services, insurance, repairs and maintenance, and various other reimbursable expenses;

• $2.6 million increase in real estate taxes primarily comprised of:

◦ $1.6 million of regular annual property tax increases in 2018;

◦ $2.2 million due to real estate taxes in 2017 being lower at one property as a result of tenant improvements determined to be non-assessable in 2017; partially offset by

◦ $1.4 million of lower real estate taxes in 2018 due to supplemental property tax adjustments in 2017 at five properties; and

• $2.8 million increase in the provision for bad debts primarily due to a $7.0 million increase in the provision for one tenant (see further discussion below), partially offset by a $1.4 million reversal of a straight line rent reserve for one tenant resulting from the assignment of its lease to a credit tenant and a net $2.8 million decrease in the provision based on our evaluation of outstanding receivables at the end of each period;

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• An increase of $3.0 million attributable to the Stabilized Development Properties primarily due to the following:

• $4.0 million increase in rental income and a $0.3 million increase in tenant reimbursements resulting from full occupancy in 2018 compared to partial occupancy in 2017;

• $0.5 million decrease in real estate taxes primarily due to adjustments in 2018 resulting from favorable timing of supplemental tax assessments; offset by

• $0.7 million increase in property expenses resulting from full occupancy in 2018 compared to partial occupancy in 2017; and

• $1.2 million increase in the provision for bad debts due to a provision recorded for one tenant;

• An increase of $4.3 million attributable to the Acquisition Properties; partially offset by

• A decrease of $10.9 million attributable to the Dispositions & Other Properties.

As noted above and previously disclosed, during the nine months ended September 30, 2018, we recorded a $7.0 million increase in the provision for bad debts related to one tenant based on our discussions with this tenant and consistent with our accounting policies.  As of September 30, 2018, our lease with this tenant represented approximately 1% of our total annualized base rental revenues. We cannot provide any assurance that any of this tenant’s lease or other obligations payable to us will not be reduced or, possibly, extinguished as a result of future discussions with this tenant or that our evaluation of other factors (including future increases in current tenant receivables and deferred rent receivables) will not result in us recording a further incremental provision for bad debts with respect to this tenant in the future.

Other Expenses and Income

General and Administrative Expenses

General and administrative expenses increased $12.8 million, or 29.4%, for the nine months ended September 30, 2018 compared to the nine months ended September 30, 2017 primarily due to the following:

• An increase of approximately $5.2 million resulting from higher professional service costs primarily related to legal costs incurred in connection with a previously disclosed litigation matter; and

• An increase of approximately $7.6 million due to higher stock compensation amortization as well as higher compensation and office expenses related to the growth of the Company.

Interest Expense

The following table sets forth our gross interest expense, including debt discounts/premiums and deferred financing cost amortization, and capitalized interest, including capitalized debt discounts/premiums and deferred financing cost amortization for the nine months ended September 30, 2018 and 2017:

	Nine Months Ended September 30,
	2018			2017			Dollar Change			Percentage Change
	(in thousands)
Gross interest expense	$	85,834		$	84,577		$	1,257		1.5	%
Capitalized interest and deferred financing costs	(48,549		)	(33,101		)	(15,448		)	46.7	%
Interest expense	$	37,285		$	51,476		$	(14,191	)	(27.6	)%

Gross interest expense, before the effect of capitalized interest and deferred financing costs, increased $1.3 million or 1.5% for the nine months ended September 30, 2018 as compared to the nine months ended September 30, 2017 due to an increase in our weighted average debt balance for the nine months ended September 30, 2018.

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Capitalized interest and deferred financing costs increased $15.4 million or 46.7%, for the nine months ended September 30, 2018 compared to the nine months ended September 30, 2017 primarily due to an increase in the average development asset balances qualifying for interest capitalization for the nine months ended September 30, 2018. During the ninemonths ended September 30, 2018 and 2017, we capitalized interest on in-process development projects and future development pipeline projects with an average aggregate cost basis of approximately $1.5 billion and $1.0 billion, respectively.

Net Income Attributable to Noncontrolling Interests in Consolidated Property Partnerships

Net income attributable to noncontrolling interests in consolidated property partnerships increased $1.5 million or 15.7% for the nine months ended September 30, 2018 compared to the nine months ended September 30, 2017 due to the inclusion of interest expense in 2017 for a mortgage note secured by one of the properties held by the property partnerships that was repaid in the fourth quarter of 2017. The amounts reported for the nine months ended September 30, 2018 and 2017 are comprised of the noncontrolling interests’ share of net income for 100 First LLC, 303 Second LLC and Redwood LLC.

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Liquidity and Capital Resources of the Company

In this “Liquidity and Capital Resources of the Company” section, the term the “Company” refers only to Kilroy Realty Corporation on an unconsolidated basis and excludes the Operating Partnership and all other subsidiaries.

The Company’s business is operated primarily through the Operating Partnership. Distributions from the Operating Partnership are the Company’s primary source of capital. The Company believes the Operating Partnership’s sources of working capital, specifically its cash flow from operations and borrowings available under its unsecured revolving credit facility and funds from its capital recycling program, including strategic ventures, are adequate for it to make its distribution payments to the Company and, in turn, for the Company to make its dividend payments to its common stockholders for the next twelve months. Cash flows from operating activities generated by the Operating Partnership for the nine months ended September 30, 2018 were sufficient to cover the Company’s payment of cash dividends to its stockholders. However, there can be no assurance that the Operating Partnership’s sources of capital will continue to be available at all or in amounts sufficient to meet its needs, including its ability to make distributions to the Company. The unavailability of capital could adversely affect the Operating Partnership’s ability to make distributions to the Company, which would in turn, adversely affect the Company’s ability to pay cash dividends to its stockholders.

The Company is a well-known seasoned issuer and the Company and the Operating Partnership have an effective shelf registration statement that provides for the public offering and sale from time to time by the Company of its preferred stock, common stock, depositary shares, warrants and guarantees of debt securities and by the Operating Partnership of its debt securities, in each case in unlimited amounts. The Company evaluates the capital markets on an ongoing basis for opportunities to raise capital, and, as circumstances warrant, the Company and the Operating Partnership may issue securities of all of these types in one or more offerings at any time and from time to time on an opportunistic basis, depending upon, among other things, market conditions, available pricing and capital needs. When the Company receives proceeds from the sales of its preferred or common stock, it generally contributes the net proceeds from those sales to the Operating Partnership in exchange for corresponding preferred or common partnership units of the Operating Partnership. The Operating Partnership may use these proceeds and proceeds from the sale of its debt securities to repay debt, including borrowings under its unsecured revolving credit facility, to develop new or existing properties, to make acquisitions of properties or portfolios of properties, or for general corporate purposes.

As the sole general partner with control of the Operating Partnership, the Company consolidates the Operating Partnership for financial reporting purposes, and the Company does not have significant assets other than its investment in the Operating Partnership. Therefore, the assets and liabilities and the revenues and expenses of the Company and the Operating Partnership are substantially the same on their respective financial statements. The section entitled “Liquidity and Capital Resources of the Operating Partnership” should be read in conjunction with this section to understand the liquidity and capital resources of the Company on a consolidated basis and how the Company is operated as a whole.

Distribution Requirements

The Company is required to distribute 90% of its taxable income (subject to certain adjustments and excluding net capital gains) on an annual basis to maintain qualification as a REIT for federal income tax purposes and is required to pay income tax at regular corporate rates to the extent it distributes less than 100% of its taxable income (including capital gains). As a result of these distribution requirements, the Operating Partnership cannot rely on retained earnings to fund its on-going operations to the same extent as other companies whose parent companies are not REITs. In addition, the Company may be required to use borrowings under the Operating Partnership’s revolving credit facility, if necessary, to meet REIT distribution requirements and maintain its REIT status. The Company may also need to continue to raise capital in the equity markets to fund the Operating Partnership’s working capital needs, as well as potential developments of new or existing properties or acquisitions.

The Company intends to continue to make, but has not committed to make, regular quarterly cash distributions to common stockholders, and through the Operating Partnership, common unitholders from the Operating Partnership’s cash flow from operating activities. All such distributions are at the discretion of the Board of Directors. As the Company intends to maintain distributions at a level sufficient to meet the REIT distribution requirements and minimize its obligation to pay income and excise taxes, it will continue to evaluate whether the current levels of distribution are sufficient to do so throughout 2018. In addition, in the event the Company is unable to identify and complete the acquisition of suitable replacement properties to effect Section 1031 Exchanges or is unable to successfully complete Section 1031 Exchanges to defer some or all of the taxable gains related to property dispositions, the Company may elect to distribute a special dividend to its common stockholders and common unitholders in order to minimize or eliminate income taxes on such gains. The Company considers market factors and its performance in addition to REIT requirements in determining its distribution levels. Amounts accumulated for distribution to stockholders are invested primarily in interest-bearing accounts and short-term interest-bearing securities, which is consistent with the Company’s

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intention to maintain its qualification as a REIT. Such investments may include, for example, obligations of the Government National Mortgage Association, other governmental agency securities, certificates of deposit, and interest-bearing bank deposits.

On September 5, 2018, the Board of Directors declared a regular quarterly cash dividend of $0.455 per share of common stock. The regular quarterly cash dividend is payable to stockholders of record on September 28, 2018 and a corresponding cash distribution of $0.455 per Operating Partnership units is payable to holders of the Operating Partnership’s common limited partnership interests of record on September 28, 2018, including those owned by the Company. The total cash quarterly dividends and distributions paid on October 17, 2018 were $46.8 million.

Debt Covenants

The covenants contained within certain of our unsecured debt obligations generally prohibit the Company from paying dividends during an event of default in excess of an amount which results in distributions to us in an amount sufficient to permit us to pay dividends to our stockholders that we reasonably believe are necessary to (a) maintain our qualification as a REIT for federal and state income tax purposes and (b) avoid the payment of federal or state income or excise tax.

Capitalization

As of September 30, 2018, our total debt as a percentage of total market capitalization was 28.2%, which was calculated based on the closing price per share of the Company’s common stock of $71.69 on September 30, 2018 as shown in the following table:

	Shares/Units at  September 30, 2018	Aggregate Principal Amount or $ Value Equivalent		% of Total Market Capitalization
	($ in thousands)
Debt: (1) (2)
Unsecured Line of Credit		$	330,000	3.2	%
Unsecured Term Loan Facility		150,000		1.5	%
Unsecured Senior Notes due 2020		250,000		2.4	%
Unsecured Senior Notes due 2023		300,000		2.9	%
Unsecured Senior Notes due 2024		425,000		4.2	%
Unsecured Senior Notes due 2025		400,000		3.9	%
Unsecured Senior Notes Series A due 2026		50,000		0.5	%
Unsecured Senior Notes due 2029		400,000		3.9	%
Unsecured Senior Notes Series A & B due 2027 & 2029		250,000		2.4	%
Secured debt		336,725		3.3	%
Total debt		$	2,891,725	28.2	%
Equity and Noncontrolling Interest in the Operating Partnership: (3)
Common limited partnership units outstanding (4)	2,025,287	$	145,193	1.4	%
Common shares outstanding (3) (5)	100,746,988	7,222,552		70.4	%
Total equity and noncontrolling interest in the Operating Partnership		$	7,367,745	71.8	%
Total Market Capitalization		$	10,259,470	100.0	%

________________________ 

(1) In May, the Company completed a private placement of $200.0 million of eight-year, 4.35% unsecured senior notes with a delayed draw option. The table above does not reflect any amounts pertaining to these notes since there were no amounts drawn or outstanding as of September 30, 2018. In October, the Company drew the full amount of these notes, the proceeds of which were used to repay a portion of the outstanding balance on our unsecured line of credit. As of the date of this report, $165.0 million was outstanding on our unsecured line of credit.

(2) Represents gross aggregate principal amount due at maturity before the effect of the following at September 30, 2018: $13.3 million of unamortized deferred financing costs on the unsecured term loan facility, unsecured senior notes, and secured debt, $5.7 million of unamortized discounts for the unsecured senior notes and $1.2 million of unamortized premiums for the secured debt.

(3) Value based on closing price per share of our common stock of $71.69as of September 30, 2018.

(4) Includes common units of the Operating Partnership not owned by the Company; does not include noncontrolling interests in consolidated property partnerships.

(5) In August, the Company completed a public offering of 5,000,000 shares of common stock priced at $72.10 per share structured as a 12-month forward sale. Shares of common stock outstanding do not include any amounts related to this public offering as the Company has not sold any shares under the forward structure as of the date of this report.

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Liquidity and Capital Resources of the Operating Partnership

In this “Liquidity and Capital Resources of the Operating Partnership” section, the terms “we,” “our,” and “us” refer to the Operating Partnership or the Operating Partnership and the Company together, as the context requires.

General

Our primary liquidity sources and uses are as follows:

Liquidity Sources

• Net cash flow from operations;

• Borrowings under the Operating Partnership’s unsecured revolving credit facility and term loan facility;

• Proceeds from our capital recycling program, including the disposition of less strategic or core assets and the formation of strategic ventures;

• Proceeds from additional secured or unsecured debt financings; and

• Proceeds from public or private issuance of debt or equity securities.

Liquidity Uses

• Development and redevelopment costs;

• Operating property or undeveloped land acquisitions;

• Property operating and corporate expenses;

• Capital expenditures, tenant improvement and leasing costs;

• Debt service and principal payments, including debt maturities;

• Distributions to common and preferred security holders;

• Repurchases and redemptions of outstanding common or preferred stock of the Company; and

• Outstanding debt repurchases, redemptions and repayments.

General Strategy

Our general strategy is to maintain a conservative balance sheet with a strong credit profile and to maintain a capital structure that allows for financial flexibility and diversification of capital resources. We manage our capital structure to reflect a long-term investment approach and utilize multiple sources of capital to meet our long-term capital requirements. We believe that our current projected liquidity requirements for the next twelve-month period, as set forth above under the caption “—Liquidity Uses,” will be satisfied using a combination of the liquidity sources listed above, although there can be no assurance in this regard. We believe our conservative leverage and staggered debt maturities provide us with financial flexibility and enhance our ability to obtain additional sources of liquidity if necessary, and, therefore, we are well-positioned to refinance or repay maturing debt and to pursue our strategy of seeking attractive acquisition opportunities, which we may finance, as necessary, with future public and private issuances of debt and equity securities.

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Liquidity Sources

Unsecured Revolving Credit Facility and Term Loan Facility

The following table summarizes the balance and terms of our unsecured revolving credit facility as of September 30, 2018 and December 31, 2017:

	September 30, 2018			December 31, 2017
	(in thousands)
Outstanding borrowings	$	330,000		$	—
Remaining borrowing capacity	420,000			750,000
Total borrowing capacity (1)	$	750,000		$	750,000
Interest rate (2)	3.23		%	2.56		%
Facility fee-annual rate (3)	0.200%
Maturity date	July 2022

________________________

(1) We may elect to borrow, subject to bank approval and obtaining commitments for any additional borrowing capacity, up to an additional $600.0 million under an accordion feature under the terms of the unsecured revolving credit facility and unsecured term loan facility.

(2) Our unsecured revolving credit facility interest rate was calculated based on an annual rate of LIBOR plus 1.000% as of September 30, 2018 and December 31, 2017.

(3) Our facility fee is paid on a quarterly basis and is calculated based on the total borrowing capacity. In addition to the facility fee, we incurred debt origination and legal costs. As of September 30, 2018 and December 31, 2017, $5.0 millionand $6.0 million of unamortized deferred financing costs, respectively, which are included in prepaid expenses and other assets, net on our consolidated balance sheets, remained to be amortized through the maturity date of our unsecured revolving credit facility.

We intend to borrow under the unsecured revolving credit facility as necessary for general corporate purposes, to finance development and redevelopment expenditures, to fund potential acquisitions and to potentially repay long-term debt.

In the first quarter of 2018, we borrowed the full $150.0 million borrowing capacity of our unsecured term loan facility. In connection with the funding of the outstanding borrowings, we transferred $30.0 million of outstanding borrowings under the unsecured revolving credit facility to the balance of our unsecured term loan facility. As a result, only $120.0 million of cash proceeds were received from the funding of the unsecured term loan facility. The following table summarizes the balance and terms of our unsecured term loan facility as of September 30, 2018 and December 31, 2017:

	September 30, 2018			December 31, 2017
	(in thousands)
Outstanding borrowings	$	150,000		$	—
Remaining borrowing capacity	—			150,000
Total borrowing capacity (1)	$	150,000		$	150,000
Interest rate (2)	3.23		%	2.66		%
Undrawn facility fee-annual rate (3)	0.200%
Maturity date	July 2022

________________________

(1) As of September 30, 2018 and December 31, 2017, $1.0 million and $1.2 million of unamortized deferred financing costs, respectively, remained to be amortized through the maturity date of our unsecured term loan facility.

(2) Our unsecured term loan facility interest rate was calculated based on an annual rate of LIBOR plus 1.100% as of September 30, 2018 and December 31, 2017.

(3) Prior to borrowing the full capacity of our unsecured term loan facility, the undrawn facility fee was calculated based on any unused borrowing capacity and was paid on a quarterly basis.

Unsecured Senior Notes - Private Placement

On May 11, 2018, the Operating Partnership entered into a Note Purchase Agreement (the “Note Purchase Agreement”), in connection with the issuance and sale of $50.0 million principal amount of the Operating Partnership’s 4.30% Senior Notes, Series A, due July 18, 2026 (the “Series A Notes”), and $200.0 million principal amount of the Operating Partnership’s 4.35% Senior Notes, Series B, due October 18, 2026 (the “Series B Notes” and, together with the Series A Notes, the “Series A and B Notes”), pursuant to a private placement. The Company drew the full amount of the Series A Notes on July 18, 2018. As of September 30, 2018, there were no amounts issued or outstanding under the Series B Notes. On October 22, 2018, the Company drew the full amount of the Series B Notes, the proceeds of which were used to repay a portion of the outstanding balance on our unsecured revolving credit facility. The Series A and B Notes mature on their respective due dates, unless earlier redeemed or prepaid pursuant to the terms of the Note Purchase Agreement. Interest on the Series A and B Notes is payable semi-annually in arrears on April 18 and October 18 of each year beginning April 18, 2019.

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Capital Recycling Program

As discussed in the section “Factors That May Influence Future Results of Operations - Capital Recycling Program,” we continuously evaluate opportunities for the potential disposition of properties and undeveloped land in our portfolio or the formation of strategic ventures with the intent of recycling the proceeds generated from the disposition of less strategic or core assets into capital used to finance development expenditures, to fund new acquisitions, to repay long-term debt and for other general corporate purposes. As part of this strategy, we attempt to enter into Section 1031 Exchanges, when possible, to defer some or all of the taxable gains on the sales, if any, for federal and state income tax purposes.

We currently anticipate that, for the remainder of 2018, we could raise approximately $375.0 million of additional capital through our dispositions program. However, any potential future disposition transactions and the timing of any potential future capital recycling transactions will depend on market conditions and other factors, including but not limited to our capital needs and our ability to defer some or all of the taxable gains on the sales. In addition, we cannot assure you that we will dispose of any additional properties, or that we will be able to identify and complete the acquisitions of suitable replacement properties to effect Section 1031 Exchanges to defer some or all of the taxable gains related to our capital recycling program.

Forward Equity Offering

On August 8, 2018, the Company entered into forward equity sale agreements with certain financial institutions acting as forward purchasers in connection with an offering of 5,000,000 common shares at an initial gross offering price of $360.5 million, or $72.10 per share, before underwriting discounts, commissions and offering expenses. The forward purchasers borrowed and sold an aggregate of 5,000,000 shares in the offering. The Company did not receive any proceeds from the sale of its common shares by the forward purchasers in the offering. The Company currently expects to fully physically settle the forward sale agreements and receive cash proceeds upon one or more settlement dates, at the Company’s discretion, prior to the final settlement date under the forward sale agreements of August 1, 2019. The forward sale price that we expect to receive upon physical settlement of the agreements will be subject to adjustment for (i) the forward purchasers’ stock borrowing costs and (ii) scheduled dividends during the term of the agreements. The full amount of this offering remains available for future settlement as of the date of this filing.

At-The-Market Stock Offering Program

During the nine months ended September 30, 2018, the Company completed its then existing at-the-market stock offering program (the “2014 At-The-Market Program”) and commenced a new at-the-market stock offering program (the “2018 At-The-Market Program”) under which we may offer and sell shares of our common stock with an aggregate gross sales price of up to $500.0 million. Under the 2018 At-The-Market-Program, the Company may sell shares under forward equity sale agreements (see “Note 6. Stockholders’ Equity of the Company” to our consolidated financial statements included in this report for additional information). During the nine months ended September 30, 2018, under the 2014 At-The-Market Program, we sold 1,369,729 shares of common stock and completed the program. Since commencement of our 2018 At-The-Market Program, as of September 30, 2018, we sold447,466 shares of common stock, none of which were sold under forward equity sale agreements. Approximately $466.2 million remains available to be sold under this program.

The following table sets forth information regarding sales of common stock under our at-the-market offering programs for the nine months ended September 30, 2018:

	Nine Months Ended September 30, 2018
	(in millions, except share and per share data)
Shares of common stock sold during the period	1,817,195
Weighted average price per common share	$	73.64
Aggregate gross proceeds	$	133.8
Aggregate net proceeds after selling commissions	$	132.1

The proceeds from sales were used to fund acquisitions, development expenditures and general corporate purposes. Actual future sales will depend upon a variety of factors, including but not limited to, market conditions, the trading price of the Company’s common stock and our capital needs. We have no obligation to sell the remaining shares available for sale under this program.

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Shelf Registration Statement

As discussed above under “—Liquidity and Capital Resources of the Company,” the Company is a well-known seasoned issuer and the Company and the Operating Partnership have an effective shelf registration statement that provides for the public offering and sale from time to time by the Company of its preferred stock, common stock, depository shares and guarantees of debt securities and by the Operating Partnership of its debt securities, in each case in unlimited amounts. The Company evaluates the capital markets on an ongoing basis for opportunities to raise capital, and, as circumstances warrant, the Company and the Operating Partnership may issue securities of all of these types in one or more offerings at any time and from time to time on an opportunistic basis, depending upon, among other things, market conditions, available pricing and capital needs. When the Company receives proceeds from the sales of its preferred or common stock, it generally contributes the net proceeds from those sales to the Operating Partnership in exchange for corresponding preferred or common partnership units of the Operating Partnership. The Operating Partnership may use these proceeds and proceeds from the sale of its debt securities to repay debt, including borrowings under its unsecured revolving credit facility, to develop new or existing properties, to make acquisitions of properties or portfolios of properties, or for general corporate purposes.

Unsecured and Secured Debt

The aggregate principal amount of the unsecured debt and secured debt of the Operating Partnership outstanding as of September 30, 2018 was as follows:

	Aggregate Principal  Amount Outstanding (1)
	(in thousands)
Unsecured Line of Credit	$	330,000
Unsecured Term Loan Facility	150,000
Unsecured Senior Notes due 2020	250,000
Unsecured Senior Notes due 2023	300,000
Unsecured Senior Notes due 2024	425,000
Unsecured Senior Notes due 2025	400,000
Unsecured Senior Notes Series A due 2026	50,000
Unsecured Senior Notes due 2029	400,000
Unsecured Senior Notes Series A & B due 2027 & 2029	250,000
Secured Debt	336,725
Total Unsecured and Secured Debt	$	2,891,725
Less: Unamortized Net Discounts and Deferred Financing Costs (2)	(17,810		)
Total Debt, Net	$	2,873,915

________________________ 

(1) In May, the Company completed a private placement of $200.0 million of eight-year, 4.35% unsecured senior notes with a delayed draw option. The table above does not reflect any amounts pertaining to these notes since there were no amounts drawn or outstanding as of September 30, 2018. In October, the Company drew the full amount of these notes, the proceeds of which were used to repay a portion of the outstanding balance on our unsecured line of credit. As of the date of this report, $165.0 million was outstanding on our unsecured line of credit.

(2) Includes $13.3 million of unamortized deferred financing costs of unamortized deferred financing costs on the unsecured term loan facility, unsecured senior notes, and secured debt, $5.7 million of unamortized discounts for the unsecured senior notes and $1.2 million of unamortized premiums for the secured debt. Excludes unamortized deferred financing costs on the unsecured revolving credit facility.

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Debt Composition

The composition of the Operating Partnership’s aggregate debt balances between secured and unsecured and fixed-rate and variable-rate debt as of September 30, 2018 and December 31, 2017 was as follows:

	Percentage of Total Debt (1) (2)				Weighted Average Interest Rate(1) (2)
	September 30, 2018		December 31, 2017		September 30, 2018		December 31, 2017
Secured vs. unsecured:
Unsecured (3)	88.4	%	85.6	%	4.0	%	4.2	%
Secured	11.6	%	14.4	%	4.4	%	4.4	%
Variable-rate vs. fixed-rate:
Variable-rate	16.6	%	—	%	3.2	%	—	%
Fixed-rate (3)	83.4	%	100.0	%	4.2	%	4.2	%
Stated rate (3)					4.1	%	4.2	%
GAAP effective rate (4)					4.0	%	4.2	%
GAAP effective rate including debt issuance costs					4.2	%	4.4	%

________________________

(1) As of the end of the period presented.

(2) In May, the Company completed a private placement of $200.0 million of eight-year, 4.35% unsecured senior notes with a delayed draw option. The table above does not reflect any amounts pertaining to these notes since there were no amounts drawn or outstanding as of September 30, 2018. In October, the Company drew the full amount of these notes, the proceeds of which were used to repay a portion of the outstanding balance on our unsecured line of credit. As of the date of this report, $165.0 million was outstanding on our unsecured line of credit.

(3) Excludes the impact of the amortization of any debt discounts/premiums and deferred financing costs.

(4) Includes the impact of the amortization of any debt discounts/premiums, excluding deferred financing costs.

Liquidity Uses

Contractual Obligations

Refer to our 2017 Annual Report on Form 10-K for a discussion of our contractual obligations. There have been no material changes, outside of the ordinary course of business, to these contractual obligations during the nine months ended September 30, 2018.

Other Liquidity Uses

Development

As of September 30, 2018, we had three development projects under construction.  These projects have a total estimated investment of approximately $1.1 billion of which we have incurred approximately $563.8 millionand committed an additional $424.0 millionas of September 30, 2018, of which $323.0 million is expected to be spent through the end of 2019.In addition, as of September 30, 2018, we had two development projects in the tenant improvement phase. These projects have a total estimated investment of approximately $840.0 million of which we have incurred approximately $692.6 million and committed an additional $172.0 million as of September 30, 2018, of which $125.0 million is expected to be spent through the end of 2019. Furthermore, we currently believe we may spend up to $50.0 million on potential future development pipeline projects that we expect we may commence construction on throughout the remainder of 2018.  Ultimate timing of these expenditures may fluctuate given construction progress and leasing status of the projects.  We expect that any material additional development activities will be funded with borrowings under the unsecured revolving credit facility, the public or private issuance of debt or equity securities, the disposition of assets under our capital recycling program, or strategic venture opportunities.

Future Acquisitions

As discussed in the section “Factors That May Influence Future Results of Operations - Acquisitions,”we continue to evaluate strategic opportunities and remain a disciplined buyer of development and redevelopment opportunities as well as value-add operating properties, dependent on market conditions and business cycles, among other factors.  We continue to focus on growth opportunities in West Coast markets populated by knowledge and creative based tenants in a variety of industries, including technology, media, healthcare, life sciences, entertainment and professional services.  Any material acquisitions will be funded with borrowings under the unsecured revolving credit facility, the public or private issuance of debt or equity securities, the disposition of assets under our capital recycling program, the formation of strategic ventures or through the assumption of existing debt. As of September 30, 2018, we had $15.0 million of acquisition deposits that are nonrefundable related to the future acquisition of an operating property with a purchase price of $146.0 million that is currently expected to close in December 2018. We cannot

48

provide assurance that we will enter into any agreements to acquire properties, or undeveloped land, or that the potential acquisitions contemplated by any agreements we may enter into in the future will be completed.

Debt Maturities

We believe our conservative leverage and staggered debt maturities provide us with financial flexibility and enhance our ability to obtain additional sources of liquidity if necessary, and, therefore, we believe we are well-positioned to refinance or repay maturing debt and to pursue our strategy of seeking attractive acquisition opportunities, which we may finance, as necessary, with future public and private issuances of debt and equity securities. However, we can provide no assurance that we will have access to the public or private debt or equity markets in the future on favorable terms or at all. Our next debt maturity with a balance of $74.9 million at September 30, 2018 occurs in June 2019.

Share Repurchases

On February 23, 2016, the Company’s Board of Directors approved a 4,000,000 share increase to the Company’s existing share repurchase program bringing the total current repurchase authorization to 4,988,025 shares. As of September 30, 2018, 4,935,826 shares remain eligible for repurchase under the Company’s share repurchase program. Under this program, repurchases may be made in open market transactions at prevailing prices or through privately negotiated transactions. We may elect to repurchase shares of our common stock under this program in the future depending upon various factors, including market conditions, the trading price of our common stock and our other uses of capital. This program does not have a termination date, and repurchases may be discontinued at any time. We intend to fund repurchases, if any, primarily with the proceeds from property dispositions.

Other Potential Future Liquidity Uses

The amounts we are required to spend on tenant improvements and leasing costs we ultimately incur will depend on actual leasing activity. Tenant improvements and leasing costs generally fluctuate in any given period depending on factors such as the type and condition of the property, the term of the lease, the type of the lease, the involvement of external leasing agents, and overall market conditions. Capital expenditures may fluctuate in any given period subject to the nature, extent and timing of improvements required to maintain our properties.

Factors That May Influence Future Sources of Capital and Liquidity of the Company and the Operating Partnership

We continue to evaluate sources of financing for our business activities, including borrowings under the unsecured revolving credit facility, issuance of public and private equity securities, unsecured debt and fixed-rate secured mortgage financing, proceeds from the disposition of selective assets through our capital recycling program, and the formation of strategic ventures. However, our ability to obtain new financing or refinance existing borrowings on favorable terms could be impacted by various factors, including the state of the macro economy, the state of the credit and equity markets, significant tenant defaults, a decline in the demand for office properties, a decrease in market rental rates or market values of real estate assets in our submarkets, and the amount of our future borrowings. These events could result in the following:

• Decreases in our cash flows from operations, which could create further dependence on the unsecured revolving credit facility;

• An increase in the proportion of variable-rate debt, which could increase our sensitivity to interest rate fluctuations in the future; and

• A decrease in the value of our properties, which could have an adverse effect on the Operating Partnership’s ability to incur additional debt, refinance existing debt at competitive rates, or comply with its existing debt obligations.

In addition to the factors noted above, the Operating Partnership’s credit ratings are subject to ongoing evaluation by credit rating agencies and may be changed or withdrawn by a rating agency in the future if, in its judgment, circumstances warrant. In the event that the Operating Partnership’s credit ratings are downgraded, we may incur higher borrowing costs and may experience difficulty in obtaining additional financing or refinancing existing indebtedness.

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Debt Covenants

The unsecured revolving credit facility, unsecured term loan facility, unsecured term loan, unsecured senior notes, and certain other secured debt arrangements contain covenants and restrictions requiring us to meet certain financial ratios and reporting requirements. Key existing financial covenants and their covenant levels include:

Unsecured Credit and Term Loan Facility and Private Placement Notes (as defined in the applicable Credit Agreements): (1)	Covenant Level	Actual Performance as of September 30, 2018
Total debt to total asset value	less than 60%	28%
Fixed charge coverage ratio	greater than 1.5x	3.7x
Unsecured debt ratio	greater than 1.67x	3.18x
Unencumbered asset pool debt service coverage	greater than 1.75x	5.02x
Unsecured Senior Notes due 2020, 2023, 2024, 2025 and 2029 (as defined in the applicable Indentures):
Total debt to total asset value	less than 60%	34%
Interest coverage	greater than 1.5x	9.2x
Secured debt to total asset value	less than 40%	4%
Unencumbered asset pool value to unsecured debt	greater than 150%	300%

________________________

(1) In May, the Company completed a private placement of $200.0 million of eight-year, 4.35% unsecured senior notes with a delayed draw option. The table above does not reflect any amounts pertaining to these notes since there were no amounts drawn or outstanding as of September 30, 2018. In October, the Company drew the full amount of these notes, the proceeds of which were used to repay a portion of the outstanding balance on our unsecured line of credit. As of the date of this report, $165.0 million was outstanding on our unsecured line of credit.

The Operating Partnership was in compliance with all of its debt covenants as of September 30, 2018. Our current expectation is that the Operating Partnership will continue to meet the requirements of its debt covenants in both the short and long term. However, in the event of an economic slowdown or continued volatility in the credit markets, there is no certainty that the Operating Partnership will be able to continue to satisfy all of the covenant requirements.

Consolidated Historical Cash Flow Summary

The following summary discussion of our consolidated historical cash flow is based on the consolidated statements of cash flows in Item 1. “Financial Statements” and is not meant to be an all-inclusive discussion of the changes in our cash flow for the periods presented below. Changes in our cash flow include changes in cash and cash equivalents and restricted cash. Our historical cash flow activity for the nine months ended September 30, 2018 as compared to the nine months ended September 30, 2017 is as follows:

	Nine Months Ended September 30,
	2018			2017			Dollar Change			Percentage Change
	($ in thousands)
Net cash provided by operating activities	$	317,215		$	276,542		$	40,673		14.7	%
Net cash used in investing activities	(805,400		)	(180,712		)	(624,688		)	345.7	%
Net cash provided by (used in) financing activities	507,904			(101,729		)	609,633			599.3	%

Operating Activities

Our cash flows from operating activities depends on numerous factors including the occupancy level of our portfolio, the rental rates achieved on our leases, the collectability of rent and recoveries from our tenants, the level of operating expenses, the impact of property acquisitions, completed development projects and related financing activities, and other general and administrative costs. Our net cash provided by operating activities increased by $40.7 million, or 14.7%, for the nine months ended September 30, 2018 compared to the nine months ended September 30, 2017 primarily as a result of an increase in cash Net Operating Income generated from our Same Store, Acquisition and Stabilized Development Portfolios. See additional information under the caption “—Results of Operations”).

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Investing Activities

Our cash flows from investing activities is generally used to fund development and operating property acquisitions, expenditures for development projects, and recurring and nonrecurring capital expenditures for our operating properties, net of proceeds received from dispositions of real estate assets. Our net cash used in investing activities increased by $624.7 million or 345.7% for the nine months ended September 30, 2018 compared to the nine months ended September 30, 2017 primarily due to development and operating property acquisitions totaling $422.3 million completed during the nine months ended September 30, 2018 compared to no acquisition activity during the nine months ended September 30, 2017, as well as an increase in spending on development projects and operating property leasing and capital expenditures during the nine months ended September 30, 2018 as compared to the nine months ended September 30, 2017. In addition, cash flows from investing activities was impacted by the timing of asset dispositions under our capital recycling program. The Company did not have any disposition transactions during the nine months ended September 30, 2018 compared to proceeds received from dispositions of $182.5 million during the nine months ended September 30, 2017.

Financing Activities

Our cash flows from financing activities is principally impacted by our capital raising activities, net of dividends and distributions paid to common and preferred security holders. During the nine months ended September 30, 2018, we had net cash provided by financing activities of $507.9 million compared to net cash used in financing activities of $101.7 million during the nine months ended September 30, 2017, primarily due to increased borrowings on our unsecured revolving credit facility during the nine months ended September 30, 2018 in order to fund acquisitions and development expenditures. In 2017 the Company had lower borrowings on our unsecured revolving credit facility due to increased capital recycling during the nine months ended September 30, 2017 as compared to the nine months ended September 30, 2018. Further, during the nine months ended September 30, 2017, we used $200.0 million of cash to redeem the Company’s Series G and H Preferred stock and paid a special dividend resulting in increased dividend payments of $165.4 million during the nine months ended September 30, 2017 as compared to the nine months ended September 30, 2018.

Off-Balance Sheet Arrangements

As of September 30, 2018 and as of the date this report was filed, we did not have any off-balance sheet transactions, arrangements or obligations, including contingent obligations.

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Non-GAAP Supplemental Financial Measure: Funds From Operations

We calculate FFO in accordance with the White Paper on FFO approved by the Board of Governors of NAREIT. The White Paper defines FFO as net income or loss calculated in accordance with GAAP, excluding extraordinary items, as defined by GAAP, gains and losses from sales of depreciable real estate and impairment write-downs associated with depreciable real estate, plus real estate-related depreciation and amortization (excluding amortization of deferred financing costs and depreciation of non-real estate assets) and after adjustment for unconsolidated partnerships and joint ventures. Our calculation of FFO includes the amortization of deferred revenue related to tenant-funded tenant improvements and excludes the depreciation of the related tenant improvement assets. We also add back net income attributable to noncontrolling common units of the Operating Partnership because we report FFO attributable to common stockholders and common unitholders.

We believe that FFO is a useful supplemental measure of our operating performance. The exclusion from FFO of gains and losses from the sale of operating real estate assets allows investors and analysts to readily identify the operating results of the assets that form the core of our activity and assists in comparing those operating results between periods. Also, because FFO is generally recognized as the industry standard for reporting the operations of REITs, it facilitates comparisons of operating performance to other REITs. However, other REITs may use different methodologies to calculate FFO, and accordingly, our FFO may not be comparable to all other REITs.

Implicit in historical cost accounting for real estate assets in accordance with GAAP is the assumption that the value of real estate assets diminishes predictably over time. Since real estate values have historically risen or fallen with market conditions, many industry investors and analysts have considered presentations of operating results for real estate companies using historical cost accounting alone to be insufficient. Because FFO excludes depreciation and amortization of real estate assets, we believe that FFO along with the required GAAP presentations provides a more complete measurement of our performance relative to our competitors and a more appropriate basis on which to make decisions involving operating, financing and investing activities than the required GAAP presentations alone would provide.

However, FFO should not be viewed as an alternative measure of our operating performance because it does not reflect either depreciation and amortization costs or the level of capital expenditures and leasing costs necessary to maintain the operating performance of our properties, which are significant economic costs and could materially impact our results from operations.

The following table presents our FFO for the three and nine months ended September 30, 2018 and 2017:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
	(in thousands)
Net income available to common stockholders	$	34,400		$	66,558		$	98,195		$	122,720
Adjustments:
Net income attributable to noncontrolling common units of the Operating Partnership	691			1,394			2,008			2,633
Net income attributable to noncontrolling interests in consolidated property partnerships	3,219			2,984			10,833			9,359
Depreciation and amortization of real estate assets	61,609			61,141			186,242			181,875
Gains on sales of depreciable real estate	—			(37,250		)	—			(39,507		)
Funds From Operations attributable to noncontrolling interests in consolidated property partnerships	(5,672		)	(5,280		)	(18,117		)	(16,832		)
Funds From Operations (1)(2)	$	94,247		$	89,547		$	279,161		$	260,248

________________________

(1) Reported amounts are attributable to common stockholders, common unitholders and restricted stock unitholders.

(2) FFO available to common stockholders and unitholders includes amortization of deferred revenue related to tenant-funded tenant improvements of $4.8 millionand $4.2 million for the three months ended September 30, 2018 and 2017, respectively, and $13.7 million and $12.4 million for the nine months ended September 30, 2018 and 2017, respectively.

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ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

The primary market risk we face is interest rate risk. We seek to mitigate this risk by following established risk management policies and procedures. These policies include maintaining prudent amounts of debt, including a greater amount of fixed-rate debt as compared to variable-rate debt in our portfolio, and may include the periodic use of derivative instruments. As of September 30, 2018 and December 31, 2017, we did not have any interest-rate sensitive derivative assets or liabilities. Information about our changes in interest rate risk exposures from December 31, 2017 to September 30, 2018 is incorporated herein by reference from “Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations —Liquidity and Capital Resources of the Operating Partnership.”

Market Risk

As of September 30, 2018, approximately 16.6% of our total outstanding debt of $2.9 billion (before the effects of debt discounts, premiums and deferred financing costs) was subject to variable interest rates. The remaining 83.4% bore interest at fixed rates. All of our interest rate sensitive financial instruments are held for purposes other than trading purposes. In general, interest rate fluctuations applied to our variable-rate debt will impact our future earnings and cash flows. Conversely, interest rate fluctuations applied to our fixed-rate debt will generally not impact our future earnings and cash flows, unless such instruments mature or are otherwise terminated and need to be refinanced. However, interest rate fluctuations will impact the fair value of the fixed-rate debt instruments.

We generally determine the fair value of our secured debt, unsecured revolving credit facility and unsecured term loan facility by performing discounted cash flow analyses using an appropriate market discount rate. We calculate the market rate by obtaining period-end treasury rates for maturities that correspond to the maturities of our fixed-rate debt and then adding an appropriate credit spread based on information obtained from third-party financial institutions. We calculate the market rate of our unsecured revolving credit facility and unsecured term loan facility by obtaining the period-end LIBOR rate and then adding an appropriate credit spread based on information obtained from third-party financial institutions. These credit spreads take into account factors, including but not limited to, our credit profile, the tenure of the debt, amortization period, whether the debt is secured or unsecured, and the loan-to-value ratio of the debt to the collateral. These calculations are significantly affected by the assumptions used, including the discount rate, credit spreads, and estimates of future cash flow. We determine the fair value of each of our publicly traded unsecured senior notes based on their quoted trading price at the end of the reporting period. See Note 11 “Fair Value Measurements and Disclosures” in the consolidated financial statements included in this report for additional information on the fair value of our financial assets and liabilities as of September 30, 2018 and December 31, 2017.

As of September 30, 2018, the total outstanding balance of our variable-rate debt was comprised of borrowings on our unsecured revolving credit facility of $330.0 million and unsecured term loan facility of $150.0 million, which were indexed to LIBOR plus a spread of 1.00% (weighted average interest rate of 3.23%) and LIBOR plus a spread of 1.10% (weighted average interest rate of 3.23%), respectively. At December 31, 2017, there were no outstanding balances on both our $750.0 million unsecured revolving credit facility and our $150.0 million unsecured term loan facility, but both were available for borrowing at the following variable rates: LIBOR plus a spread of 1.00% (weighted average interest rate of 2.56%) and LIBOR plus a spread of 1.10% (weighted average interest rate of 2.66%), respectively. Assuming no changes in the outstanding balance of our existing variable-rate debt as of September 30, 2018, a 100 basis point increase in the LIBOR rate would increase our projected annual interest expense, before the effect of capitalization, by approximately $4.8 million.

The total carrying value of our fixed-rate debt was approximately $2.4 billion and $2.3 billion as of September 30, 2018 and December 31, 2017, respectively. The total estimated fair value of our fixed-rate debt was approximately $2.4 billion as of September 30, 2018 and December 31, 2017. For sensitivity purposes, a 100 basis point increase in the discount rate equates to a decrease in the total fair value of our fixed-rate debt of approximately $127.4 million, or 5.4%, as of September 30, 2018.Comparatively, a 100 basis point increase in the discount rate equates to a decrease in the total fair value of our fixed-rate debt of approximately $145.0 million, or 6.0%, as of December 31, 2017.

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ITEM 4. CONTROLS AND PROCEDURES

Kilroy Realty Corporation

The Company maintains disclosure controls and procedures (as defined in Rule 13a-15(e) or Rule 15d-15(e) under the Exchange Act) that are designed to ensure that information required to be disclosed in the Company’s reports under the Exchange Act is processed, recorded, summarized and reported within the time periods specified in the SEC’s rules and forms and that such information is accumulated and communicated to management, including the Chief Executive Officer and Chief Financial Officer, as appropriate, to allow for timely decisions regarding required disclosure. In designing and evaluating the disclosure controls and procedures, management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and management is required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures.

As required by SEC Rule 13a-15(b), the Company carried out an evaluation, under the supervision and with the participation of management, including the Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of the disclosure controls and procedures as of September 30, 2018, the end of the period covered by this report. Based on the foregoing, the Company’s Chief Executive Officer and Chief Financial Officer concluded, as of that time, the disclosure controls and procedures were effective at the reasonable assurance level.

There have been no significant changes that occurred during the quarter covered by this report in the Company’s internal control over financial reporting identified in connection with the evaluation referenced above that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Kilroy Realty, L.P.

The Operating Partnership maintains disclosure controls and procedures (as defined in Rule 13a-15(e) or Rule 15d-15(e) under the Exchange Act) that are designed to ensure that information required to be disclosed in the Operating Partnership’s reports under the Exchange Act is processed, recorded, summarized and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to management, including the Chief Executive Officer and Chief Financial Officer, as appropriate, to allow for timely decisions regarding required disclosure. In designing and evaluating the disclosure controls and procedures, management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and management is required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures.

As required by SEC Rule 13a-15(b), the Operating Partnership carried out an evaluation, under the supervision and with the participation of management, including the Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of the disclosure controls and procedures as of September 30, 2018, the end of the period covered by this report. Based on the foregoing, the Operating Partnership’s Chief Executive Officer and Chief Financial Officer concluded, as of that time, the disclosure controls and procedures were effective at the reasonable assurance level.

There have been no significant changes that occurred during the quarter covered by this report in the Operating Partnership’s internal control over financial reporting identified in connection with the evaluation referenced above that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II – OTHER INFORMATION

ITEM 1.    LEGAL PROCEEDINGS

We and our properties are subject to routine litigation incidental to our business. These matters are generally covered by insurance. As of September 30, 2018, we are not a defendant in, and our properties are not subject to, any legal proceedings that we believe, if determined adversely to us, would have a material adverse effect upon our financial condition, results of operations or cash flows.

ITEM 1A. RISK FACTORS

There have been no material changes to the risk factors included in the Company’s and the Operating Partnership’s annual report on Form 10-K for the year ended December 31, 2017.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

(a) Recent Sales of Unregistered Securities: None.

(b) Use of Proceeds from Registered Securities: None.

(c) Purchases of Equity Securities by the Issuer and Affiliated Purchasers:

The table below reflects our purchases of common stock during each of the three months in the three-month period ended

September 30, 2018.

Period	Total Number of Shares of Stock Purchased (1)	Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Maximum Number (or Approximate Dollar Value) that May Yet be Purchased Under the Plans or Programs
July 1, 2018 - July 31, 2018	39,605	$	73.52	—	—
August 1, 2018 - August 31, 2018	—	—		—	—
September 1, 2018 - September 30, 2018	—	—		—	—
Total	39,605	$	73.52	—	—

_______________

(1) Includes shares of common stock remitted to the Company to satisfy tax withholding obligations in connection with the distribution of, or the vesting and distribution of, restricted stock units or restricted stock in shares of common stock. The value of such shares of common stock remitted to the Company was based on the closing price of the Company’s common stock on the applicable withholding date.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4. MINE SAFETY DISCLOSURES

None.

ITEM 5. OTHER INFORMATION

None.

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ITEM 6. EXHIBITS

Exhibit Number	Description
3.(i)1	Kilroy Realty Corporation Articles of Restatement (previously filed by Kilroy Realty Corporation as an exhibit on Form 10-Q for the quarter ended June 30, 2012)
3.(i)2	Certificate of Limited Partnership of Kilroy Realty, L.P. (previously filed by Kilroy Realty, L.P., as an exhibit to the General Form for Registration of Securities on Form 10 as filed with the Securities and Exchange Commission on August 18, 2010)
3.(i)3	Amendment to the Certificate of Limited Partnership of Kilroy Realty, L.P. (previously filed by Kilroy Realty, L.P., as an exhibit to the General Form for Registration of Securities on Form 10 as filed with the Securities and Exchange Commission on August 18, 2010)
3.(i)4	Articles Supplementary reclassifying shares of the Series G Preferred Stock of the Company (previously filed by Kilroy Realty Corporation as an exhibit on Form 8-K as filed with the Securities and Exchange Commission on August 23, 2017)
3.(i)5	Articles Supplementary reclassifying shares of the Series H Preferred Stock of the Company (previously filed by Kilroy Realty Corporation as an exhibit on Form 8-K as filed with the Securities and Exchange Commission on August 23, 2017)
3.(ii)1	Fifth Amended and Restated Bylaws of Kilroy Realty Corporation (previously filed by Kilroy Realty Corporation as an exhibit on Form 8-K as filed with the Securities and Exchange Commission on February 1, 2017)
3.(ii)2	Seventh Amended and Restated Agreement of Limited Partnership of Kilroy Realty, L.P. dated as of August 15, 2012, as amended (previously filed by Kilroy Realty Corporation on Form 10-Q for the quarter ended June 30, 2014)
31.1*	Rule 13a-14(a)/15d-14(a) Certification of Chief Executive Officer of Kilroy Realty Corporation
31.2*	Rule 13a-14(a)/15d-14(a) Certification of Chief Financial Officer of Kilroy Realty Corporation
31.3*	Rule 13a-14(a)/15d-14(a) Certification of Chief Executive Officer of Kilroy Realty, L.P.
31.4*	Rule 13a-14(a)/15d-14(a) Certification of Chief Financial Officer of Kilroy Realty, L.P.
32.1*	Section 1350 Certification of Chief Executive Officer of Kilroy Realty Corporation
32.2*	Section 1350 Certification of Chief Financial Officer of Kilroy Realty Corporation
32.3*	Section 1350 Certification of Chief Executive Officer of Kilroy Realty, L.P.
32.4*	Section 1350 Certification of Chief Financial Officer of Kilroy Realty, L.P.
101.1	The following Kilroy Realty Corporation and Kilroy Realty, L.P. financial information for the quarter ended September 30, 2018, formatted in XBRL (eXtensible Business Reporting Language): (i) Consolidated Balance Sheets (unaudited), (ii) Consolidated Statements of Operations (unaudited), (iii) Consolidated Statements of Equity (unaudited), (iv) Consolidated Statements of Capital (unaudited), (v) Consolidated Statements of Cash Flows (unaudited) and (vi) Notes to the Consolidated Financial Statements (unaudited).(1)

_______________

*	Filed herewith.
†	Management contract or compensatory plan or arrangement.
(1)	Pursuant to Rule 406T of Regulation S-T, these interactive data files are deemed not filed or part of a registration statement or prospectus for purposes of Sections 11 or 12 of the Securities Act of 1933 or Section 18 of the Securities Exchange Act of 1934 and otherwise are not subject to liability under these sections.

56

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized on October 25, 2018.

KILROY REALTY CORPORATION
	By:	/s/ John Kilroy
		John Kilroy President and Chief Executive Officer (Principal Executive Officer)
	By:	/s/ Tyler H. Rose
		Tyler H. Rose Executive Vice President and Chief Financial Officer (Principal Financial Officer)
	By:	/s/ Heidi R. Roth
		Heidi R. Roth Executive Vice President and Chief Accounting Officer (Principal Accounting Officer)

57

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized on October 25, 2018.

KILROY REALTY, L.P.
BY:	KILROY REALTY CORPORATION
	Its general partner
	By:	/s/ John Kilroy
		John Kilroy President and Chief Executive Officer (Principal Executive Officer)
	By:	/s/ Tyler H. Rose
		Tyler H. Rose Executive Vice President and Chief Financial Officer (Principal Financial Officer)
	By:	/s/ Heidi R. Roth
		Heidi R. Roth Executive Vice President and Chief Accounting Officer (Principal Accounting Officer)

58

EX-31.1

Exhibit 31.1

Certification of Chief Executive Officer

Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, John Kilroy, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Kilroy Realty Corporation;

2. 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;

3. 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;

4. The registrant’s other certifying officer 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. 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;

b. 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;

c. 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

d. 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 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. 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

b. 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.

/s/ John Kilroy

John Kilroy

President and Chief Executive Officer

Date: October 25, 2018

EX-31.2

Exhibit 31.2

Certification of Chief Financial Officer

Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Tyler H. Rose, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Kilroy Realty Corporation;

2. 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;

3. 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;

4. The registrant’s other certifying officer 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. 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;

b. 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;

c. 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

d. 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 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. 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

b. 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.

/s/ Tyler H. Rose

Tyler H. Rose

Executive Vice President and Chief Financial Officer

Date: October 25, 2018

EX-31.3

Exhibit 31.3

Certification of Chief Executive Officer

Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, John Kilroy, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Kilroy Realty, L.P.;

2. 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;

3. 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;

4. The registrant’s other certifying officer 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. 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;

b. 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;

c. 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

d. 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 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. 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

b. 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.

/s/ John Kilroy

John Kilroy

President and Chief Executive Officer

Kilroy Realty Corporation, sole general partner of

  Kilroy Realty, L.P.

Date: October 25, 2018

EX-31.4

Exhibit 31.4

Certification of Chief Financial Officer

Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Tyler H. Rose, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Kilroy Realty, L.P.;

2. 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;

3. 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;

4. The registrant's other certifying officer 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. 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;

b. 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;

c. 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

d. 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 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. 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

b. 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.

/s/ Tyler H. Rose

Tyler H. Rose

Executive Vice President and Chief Financial Officer

Kilroy Realty Corporation, sole general partner of

Kilroy Realty, L.P.

Date: October 25, 2018

EX-32.1

Exhibit 32.1

Certification of Chief Executive Officer

Pursuant to 18 U.S.C. § 1350, as created by Section 906 of the Sarbanes-Oxley Act of 2002, the undersigned officer of Kilroy Realty Corporation (the “Company”) hereby certifies, to his knowledge, that:

(i) the accompanying Quarterly Report on Form 10-Q of the Company for the quarter ended September 30, 2018 (the “Report”) fully complies with the requirements of Section 13(a) or Section 15(d), as applicable, of the Securities Exchange Act of 1934, as amended; and

(ii) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ John Kilroy
John Kilroy
President and Chief Executive Officer
Date:	October 25, 2018

The foregoing certification is being furnished solely pursuant to 18 U.S.C. § 1350, is not being filed as part of the Report or as a separate disclosure document, and is not being incorporated by reference into any filing of the Company or Kilroy Realty, L.P. under the Securities Act of 1933, as amended, or the Securities Act of 1934, as amended, (whether made before or after the date of the Report) irrespective of any general incorporation language contained in such filing. The signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

Exhibit 32.2

Certification of Chief Financial Officer

Pursuant to 18 U.S.C. § 1350, as created by Section 906 of the Sarbanes-Oxley Act of 2002, the undersigned officer of Kilroy Realty Corporation (the “Company”) hereby certifies, to his knowledge, that:

(i) the accompanying Quarterly Report on Form 10-Q of the Company for the quarter ended September 30, 2018 (the “Report”) fully complies with the requirements of Section 13(a) or Section 15(d), as applicable, of the Securities Exchange Act of 1934, as amended; and

(ii) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Tyler H. Rose
Tyler H. Rose
Executive Vice President and Chief Financial Officer
Date:	October 25, 2018

The foregoing certification is being furnished solely pursuant to 18 U.S.C. § 1350, is not being filed as part of the Report or as a separate disclosure document, and is not being incorporated by reference into any filing of the Company or Kilroy Realty, L.P. under the Securities Act of 1933, as amended, or the Securities Act of 1934, as amended, (whether made before or after the date of the Report) irrespective of any general incorporation language contained in such filing. The signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.3

Exhibit 32.3

Certification of Chief Executive Officer

Pursuant to 18 U.S.C. § 1350, as created by Section 906 of the Sarbanes-Oxley Act of 2002, the undersigned officer of Kilroy Realty Corporation, the sole general partner of Kilroy Realty, L.P. (the “Operating Partnership”), hereby certifies, to his knowledge, that:

(i) the accompanying Quarterly Report on Form 10-Q of the Operating Partnership for the quarter ended September 30, 2018 (the “Report”) fully complies with the requirements of Section 13(a) or Section 15(d), as applicable, of the Securities Exchange Act of 1934, as amended; and

(ii) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Operating Partnership.

/s/ John Kilroy
John Kilroy
President and Chief Executive Officer
Kilroy Realty Corporation, sole general partner of Kilroy Realty, L.P.
Date:	October 25, 2018

The foregoing certification is being furnished solely pursuant to 18 U.S.C. § 1350, is not being filed as part of the Report or as a separate disclosure document, and is not being incorporated by reference into any filing of Kilroy Realty Corporation or the Operating Partnership under the Securities Act of 1933, as amended, or the Securities Act of 1934, as amended, (whether made before or after the date of the Report) irrespective of any general incorporation language contained in such filing. The signed original of this written statement required by Section 906 has been provided to the Operating Partnership and will be retained by the Operating Partnership and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.4

Exhibit 32.4

Certification of Chief Financial Officer

Pursuant to 18 U.S.C. § 1350, as created by Section 906 of the Sarbanes-Oxley Act of 2002, the undersigned officer of Kilroy Realty Corporation, the sole general partner of Kilroy Realty, L.P. (the "Operating Partnership"), hereby certifies, to his knowledge, that:

(i) the accompanying Quarterly Report on Form 10-Q of the Operating Partnership for the quarter ended September 30, 2018 (the “Report”) fully complies with the requirements of Section 13(a) or Section 15(d), as applicable, of the Securities Exchange Act of 1934, as amended; and

(ii) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Operating Partnership.

/s/ Tyler H. Rose
Tyler H. Rose
Executive Vice President and Chief Financial Officer
Kilroy Realty Corporation, sole general partner of Kilroy Realty, L.P.
Date:	October 25, 2018

The foregoing certification is being furnished solely pursuant to 18 U.S.C. § 1350, is not being filed as part of the Report or as a separate disclosure document, and is not being incorporated by reference into any filing of Kilroy Realty Corporation or the Operating Partnership under the Securities Act of 1933, as amended, or the Securities Act of 1934, as amended, (whether made before or after the date of the Report) irrespective of any general incorporation language contained in such filing. The signed original of this written statement required by Section 906 has been provided to the Operating Partnership and will be retained by the Operating Partnership and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Oct. 19, 2018
Entity Registrant Name	KILROY REALTY CORP
Entity Central Index Key	0001025996
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		100,746,988
Entity Emerging Growth Company	false
Entity Small Business	false
Kilroy Realty L.P. [Member]
Entity Registrant Name	Kilroy Realty, L.P.
Entity Central Index Key	0001493976
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Emerging Growth Company	false
Entity Small Business	false

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
REAL ESTATE ASSETS (Note 2):
Land and improvements	$ 1,127,100	$ 1,076,172
Buildings and improvements	5,056,050	4,908,797
Undeveloped land and construction in progress	2,146,430	1,432,808
Total real estate assets held for investment	8,329,580	7,417,777
Accumulated depreciation and amortization	(1,411,529)	(1,264,162)
Total real estate assets held for investment, net	6,918,051	6,153,615
CASH AND CASH EQUIVALENTS	86,517	57,649
RESTRICTED CASH	0	9,149
MARKETABLE SECURITIES (Note 11)	23,353	20,674
CURRENT RECEIVABLES, NET (Note 3)	17,519	16,926
DEFERRED RENT RECEIVABLES, NET (Note 3)	261,003	246,391
DEFERRED LEASING COSTS AND ACQUISITION-RELATED INTANGIBLE ASSETS, NET	183,118	183,728
PREPAID EXPENSES AND OTHER ASSETS, NET (Note 4)	72,675	114,706
TOTAL ASSETS	7,562,236	6,802,838
LIABILITIES:
Secured debt, net (Notes 5 and 11)	336,866	340,800
Unsecured debt, net (Notes 5 and 11)	2,207,049	2,006,263
Unsecured line of credit (Notes 5, 11 and 17)	330,000	0
Accounts payable, accrued expenses and other liabilities	360,674	249,637
Accrued dividends and distributions (Note 17)	47,411	43,448
Deferred revenue and acquisition-related intangible liabilities, net	149,059	145,890
Rents received in advance and tenant security deposits	56,258	56,484
Total liabilities	3,487,317	2,842,522
COMMITMENTS AND CONTINGENCIES (Note 10)
Stockholders’ Equity (Note 6):
Common stock, $.01 par value, 150,000,000 shares authorized, 100,746,988 and 98,620,333 shares issued and outstanding, respectively	1,007	986
Additional paid-in capital	3,965,405	3,822,492
Distributions in excess of earnings	(161,654)	(122,685)
Total stockholders’ equity	3,804,758	3,700,793
Noncontrolling Interests (Notes 1 and 7):
Common units of the Operating Partnership	76,486	77,948
Noncontrolling interests in consolidated property partnerships	193,675	181,575
Total noncontrolling interests	270,161	259,523
Total equity	4,074,919	3,960,316
TOTAL LIABILITIES AND EQUITY (CAPITAL)	$ 7,562,236	$ 6,802,838

XML

Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	150,000,000	150,000,000
Common stock, shares issued (in shares)	100,746,988	98,620,333
Common stock, shares outstanding (in shares)	100,746,988	98,620,333

XML

Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
REVENUES
Revenue	$ 186,562	$ 181,534	$ 556,456	$ 541,440
EXPENSES
Real estate taxes	17,462	16,371	52,421	50,878
Provision for bad debts (Note 12)	1,338	1,036	6,714	2,743
Ground leases	1,579	1,562	4,726	4,751
General and administrative expenses	19,277	14,514	56,599	43,750
Depreciation and amortization	62,700	62,567	189,421	185,737
Total expenses	137,519	129,120	409,282	385,474
OTHER (EXPENSES) INCOME
Interest income and other net investment gain/loss (Note 11)	342	1,526	1,147	3,629
Interest expense (Note 5)	(11,075)	(16,151)	(37,285)	(51,476)
Total other (expenses) income	(10,733)	(14,625)	(36,138)	(47,847)
INCOME FROM OPERATIONS BEFORE GAINS ON SALES OF REAL ESTATE	38,310	37,789	111,036	108,119
Net gain on sale of land	0	449	0	449
Gains on sales of depreciable operating properties	0	37,250	0	39,507
NET INCOME	38,310	75,488	111,036	148,075
Net income attributable to noncontrolling common units of the Operating Partnership	(691)	(1,394)	(2,008)	(2,633)
Net income attributable to noncontrolling interests in consolidated property partnerships	(3,219)	(2,984)	(10,833)	(9,359)
Total income attributable to noncontrolling interests	(3,910)	(4,378)	(12,841)	(11,992)
NET INCOME ATTRIBUTABLE TO KILROY REALTY CORPORATION (KILROY REALTY, L.P.)	34,400	71,110	98,195	136,083
Preferred dividends	0	(808)	0	(5,774)
Original issuance costs of redeemed preferred stock and preferred units	0	(3,744)	0	(7,589)
Total preferred dividends	0	(4,552)	0	(13,363)
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS (UNITHOLDERS)	$ 34,400	$ 66,558	$ 98,195	$ 122,720
Net income available to common stockholders per share – basic (in dollars per share) (Note 13)	$ 0.34	$ 0.67	$ 0.97	$ 1.24
Net income available to common stockholders per share – diluted (in dollars per share) (Note 13)	$ 0.33	$ 0.67	$ 0.97	$ 1.23
Weighted average common shares outstanding – basic (in shares) (Note 13)	100,676,778	98,352,139	99,711,312	98,008,780
Weighted average common shares outstanding – diluted (in shares) (Note 13)	101,228,334	98,911,612	100,208,645	98,591,048
Dividends declared per common share (in dollars per share)	$ 0.455000	$ 0.425000	$ 1.335	$ 1.225
Rental [Member]
REVENUES
Revenue	$ 162,288	$ 159,954	$ 489,674	$ 475,527
Tenant reimbursements [Member]
REVENUES
Revenue	21,754	19,665	60,471	58,228
Other property income [Member]
REVENUES
Revenue	2,520	1,915	6,311	7,685
Property [Member]
EXPENSES
Property expenses	$ 35,163	$ 33,070	$ 99,401	$ 97,615

XML

Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Common Stock Additional Paid-in Capital [Member]	Common Stock Distributions in Excess of Earnings [Member]	Total Stockholders' Equity [Member]	Noncontrolling Interests [Member]
Beginning balance at Dec. 31, 2016	$ 3,759,317	$ 192,411	$ 932	$ 3,457,649	$ (107,997)	$ 3,542,995	$ 216,322
Beginning balance (in shares) at Dec. 31, 2016			93,219,439
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	148,075				136,083	136,083	11,992
Redemption of Series G and H Preferred stock	(200,000)	(192,411)			(7,589)	(200,000)
Issuance of common stock (in shares)			4,427,500
Issuance of common stock	308,812		$ 44	308,768		308,812
Issuance of share-based compensation awards	5,291			5,291		5,291
Non-cash amortization of share-based compensation	19,013			19,013		19,013
Exercise of stock options (in shares)			282,000
Exercise of stock options	12,051		$ 4	12,047		12,051
Settlement of restricted stock units for shares of common stock (in shares)			317,848
Settlement of restricted stock units for shares of common stock	0		$ 3	(3)		0
Repurchase of common stock, stock options and restricted stock units (in shares)			(168,881)
Repurchase of common stock, stock options and restricted stock units	(12,986)		$ (2)	(12,984)		(12,986)
Exchange of common units of the Operating Partnership (in shares)			304,350
Exchange of common units of the Operating Partnership	0		$ 3	10,936		10,939	(10,939)
Contributions from noncontrolling interests in consolidated property partnerships	250					0	250
Distributions to noncontrolling interests in consolidated property partnerships	(12,234)					0	(12,234)
Adjustment for noncontrolling interest	0			(3,171)		(3,171)	3,171
Preferred dividends	(5,774)				(5,774)	(5,774)
Dividends declared per common share and common unit ($1.335 and $1.225 per share/unit for the nine months ended September 2018 and 2017, respectively)	(125,935)				(123,390)	(123,390)	(2,545)
Ending balance at Sep. 30, 2017	3,895,880	$ 0	$ 984	3,797,546	(108,667)	3,689,863	206,017
Ending balance (in shares) at Sep. 30, 2017			98,382,256
Beginning balance at Dec. 31, 2017	$ 3,960,316		$ 986	3,822,492	(122,685)	3,700,793	259,523
Beginning balance (in shares) at Dec. 31, 2017	98,620,333		98,620,333
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 111,036				98,195	98,195	12,841
Issuance of common stock (in shares)			1,817,195
Issuance of common stock	130,744		$ 18	130,726		130,744
Issuance of share-based compensation awards	3,298			3,298		3,298
Non-cash amortization of share-based compensation	24,678			24,678		24,678
Exercise of stock options (in shares)			1,000
Exercise of stock options	41		$ 0	41		41
Settlement of restricted stock units for shares of common stock (in shares)			488,354
Settlement of restricted stock units for shares of common stock	0		$ 4	(4)		0
Repurchase of common stock, stock options and restricted stock units (in shares)			(231,800)
Repurchase of common stock, stock options and restricted stock units	(16,553)		$ (2)	(16,551)		(16,553)
Exchange of common units of the Operating Partnership (in shares)			51,906
Exchange of common units of the Operating Partnership	0		$ 1	1,961		1,962	(1,962)
Contributions from noncontrolling interests in consolidated property partnerships	8,273					0	8,273
Distributions to noncontrolling interests in consolidated property partnerships	(7,006)					0	(7,006)
Adjustment for noncontrolling interest	0			(1,236)		(1,236)	1,236
Dividends declared per common share and common unit ($1.335 and $1.225 per share/unit for the nine months ended September 2018 and 2017, respectively)	(139,908)				(137,164)	(137,164)	(2,744)
Ending balance at Sep. 30, 2018	$ 4,074,919		$ 1,007	$ 3,965,405	$ (161,654)	$ 3,804,758	$ 270,161
Ending balance (in shares) at Sep. 30, 2018	100,746,988		100,746,988

XML

Consolidated Statements of Equity (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Stockholders' Equity [Abstract]
Dividends declared per common share and common unit (in dollars per share)	$ 0.455000	$ 0.425000	$ 1.335	$ 1.225

XML

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 111,036	$ 148,075
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of real estate assets and leasing costs	186,242	181,875
Depreciation of non-real estate furniture, fixtures and equipment	3,179	3,862
Increase in provision for bad debts (Note 12)	6,714	2,743
Non-cash amortization of share-based compensation awards	18,901	13,617
Non-cash amortization of deferred financing costs and debt discounts and premiums	816	2,398
Non-cash amortization of net below market rents	(7,647)	(6,026)
Gain on sale of depreciable operating properties	0	(39,507)
Gain on sale of land	0	(449)
Non-cash amortization of deferred revenue related to tenant-funded tenant improvements	(13,680)	(12,394)
Straight-line rents	(16,293)	(25,537)
Net change in other operating assets	(9,163)	(16,970)
Net change in other operating liabilities	37,110	24,855
Net cash provided by operating activities	317,215	276,542
CASH FLOWS FROM INVESTING ACTIVITIES:
Expenditures for acquisition of undeveloped land (Note 2)	(311,299)	0
Expenditures for development properties and undeveloped land	(311,347)	(270,839)
Expenditures for acquisition of operating properties (Note 2)	(111,029)	0
Expenditures for operating properties	(107,825)	(61,875)
Net proceeds received from dispositions	0	182,492
Net decrease (increase) in acquisition-related deposits	21,000
Net decrease (increase) in acquisition-related deposits		(30,490)
Proceeds received from repayment of note receivable (Note 4)	15,100	0
Net cash used in investing activities	(805,400)	(180,712)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings on unsecured revolving credit facility (Note 5)	645,000	70,000
Repayments on unsecured revolving credit facility (Note 5)	(285,000)	(10,000)
Borrowings on unsecured debt (Note 5)	120,000	0
Principal payments on secured debt	(2,670)	(5,740)
Proceeds from the issuance of unsecured debt (Note 5)	50,000	250,000
Repayments of unsecured debt	0	(189,000)
Financing costs	(2,278)	(7,480)
Net proceeds from issuance of common stock (Note 6)	130,744	308,812
Redemption of Series G and H Preferred stock	0	(200,000)
Repurchase of common stock and restricted stock units	(16,553)	(12,986)
Proceeds from exercise of stock options	41	12,051
Distributions to noncontrolling interests in consolidated property partnerships	(7,014)	(12,234)
Contributions from noncontrolling interests in consolidated property partnerships	8,273	250
Dividends and distributions paid to common stockholders and common unitholders	(132,639)	(297,993)
Dividends and distributions paid to preferred stockholders and preferred unitholders	0	(7,409)
Net cash provided by (used in) financing activities	507,904	(101,729)
Net increase (decrease) in cash and cash equivalents and restricted cash	19,719	(5,899)
Cash and cash equivalents and restricted cash, beginning of period	66,798	250,129
Cash and cash equivalents and restricted cash, end of period	$ 86,517	$ 244,230

XML

Consolidated Balance Sheets (KILROY REALTY, L.P.) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
REAL ESTATE ASSETS (Note 2):
Land and improvements	$ 1,127,100	$ 1,076,172
Buildings and improvements	5,056,050	4,908,797
Undeveloped land and construction in progress	2,146,430	1,432,808
Total real estate assets held for investment	8,329,580	7,417,777
Accumulated depreciation and amortization	(1,411,529)	(1,264,162)
Total real estate assets held for investment, net	6,918,051	6,153,615
CASH AND CASH EQUIVALENTS	86,517	57,649
RESTRICTED CASH	0	9,149
MARKETABLE SECURITIES (Note 11)	23,353	20,674
CURRENT RECEIVABLES, NET (Note 3)	17,519	16,926
DEFERRED RENT RECEIVABLES, NET (Note 3)	261,003	246,391
DEFERRED LEASING COSTS AND ACQUISITION-RELATED INTANGIBLE ASSETS, NET	183,118	183,728
PREPAID EXPENSES AND OTHER ASSETS, NET (Note 4)	72,675	114,706
TOTAL ASSETS	7,562,236	6,802,838
LIABILITIES:
Secured debt, net (Notes 5 and 11)	336,866	340,800
Unsecured debt, net (Notes 5 and 11)	2,207,049	2,006,263
Unsecured line of credit (Notes 5, 11 and 17)	330,000	0
Accounts payable, accrued expenses and other liabilities	360,674	249,637
Accrued distributions (Note 17)	47,411	43,448
Deferred revenue and acquisition-related intangible liabilities, net	149,059	145,890
Rents received in advance and tenant security deposits	56,258	56,484
Total liabilities	3,487,317	2,842,522
COMMITMENTS AND CONTINGENCIES (Note 10)
CAPITAL:
TOTAL LIABILITIES AND EQUITY (CAPITAL)	7,562,236	6,802,838
Kilroy Realty L.P. [Member]
REAL ESTATE ASSETS (Note 2):
Land and improvements	1,127,100	1,076,172
Buildings and improvements	5,056,050	4,908,797
Undeveloped land and construction in progress	2,146,430	1,432,808
Total real estate assets held for investment	8,329,580	7,417,777
Accumulated depreciation and amortization	(1,411,529)	(1,264,162)
Total real estate assets held for investment, net	6,918,051	6,153,615
CASH AND CASH EQUIVALENTS	86,517	57,649
RESTRICTED CASH	0	9,149
MARKETABLE SECURITIES (Note 11)	23,353	20,674
CURRENT RECEIVABLES, NET (Note 3)	17,519	16,926
DEFERRED RENT RECEIVABLES, NET (Note 3)	261,003	246,391
DEFERRED LEASING COSTS AND ACQUISITION-RELATED INTANGIBLE ASSETS, NET	183,118	183,728
PREPAID EXPENSES AND OTHER ASSETS, NET (Note 4)	72,675	114,706
TOTAL ASSETS	7,562,236	6,802,838
LIABILITIES:
Secured debt, net (Notes 5 and 11)	336,866	340,800
Unsecured debt, net (Notes 5 and 11)	2,207,049	2,006,263
Unsecured line of credit (Notes 5, 11 and 17)	330,000	0
Accounts payable, accrued expenses and other liabilities	360,674	249,637
Accrued distributions (Note 17)	47,411	43,448
Deferred revenue and acquisition-related intangible liabilities, net	149,059	145,890
Rents received in advance and tenant security deposits	56,258	56,484
Total liabilities	3,487,317	2,842,522
COMMITMENTS AND CONTINGENCIES (Note 10)
CAPITAL:
Common units, 100,746,988 and 98,620,333 held by the general partner and 2,025,287 and 2,077,193 held by common limited partners issued and outstanding, respectively (Note 8)	3,876,142	3,773,941
Noncontrolling interests in consolidated property partnerships and subsidiaries (Note 1)	198,777	186,375
Total capital	4,074,919	3,960,316
TOTAL LIABILITIES AND EQUITY (CAPITAL)	$ 7,562,236	$ 6,802,838

XML

Consolidated Balance Sheets (KILROY REALTY, L.P.) (Parenthetical) - Common units [Member] - Kilroy Realty L.P. [Member] - shares	Sep. 30, 2018	Dec. 31, 2017
General partner, units issued	100,746,988	98,620,333
General partners, units outstanding	100,746,988	98,620,333
Limited partners, units issued	2,025,287	2,077,193
Noncontrolling common units of the Operating Partnership	2,025,287	2,077,193

XML

Consolidated Statements of Operations (KILROY REALTY, L.P.) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
REVENUES
Revenue	$ 186,562	$ 181,534	$ 556,456	$ 541,440
EXPENSES
Real estate taxes	17,462	16,371	52,421	50,878
Provision for bad debts (Note 12)	1,338	1,036	6,714	2,743
Ground leases	1,579	1,562	4,726	4,751
General and administrative expenses	19,277	14,514	56,599	43,750
Depreciation and amortization	62,700	62,567	189,421	185,737
Total expenses	137,519	129,120	409,282	385,474
OTHER (EXPENSES) INCOME
Interest income and other net investment gain/loss (Note 11)	342	1,526	1,147	3,629
Interest expense (Note 5)	(11,075)	(16,151)	(37,285)	(51,476)
Total other (expenses) income	(10,733)	(14,625)	(36,138)	(47,847)
INCOME FROM OPERATIONS BEFORE GAINS ON SALES OF REAL ESTATE	38,310	37,789	111,036	108,119
Net gain on sale of land	0	449	0	449
Gains on sales of depreciable operating properties	0	37,250	0	39,507
NET INCOME	38,310	75,488	111,036	148,075
Net income attributable to noncontrolling interests in consolidated property partnerships and subsidiaries	(3,910)	(4,378)	(12,841)	(11,992)
NET INCOME ATTRIBUTABLE TO KILROY REALTY CORPORATION (KILROY REALTY, L.P.)	34,400	71,110	98,195	136,083
Preferred distributions	0	(808)	0	(5,774)
Original issuance costs of redeemed preferred stock and preferred units	0	(3,744)	0	(7,589)
Total preferred distributions	0	(4,552)	0	(13,363)
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS (UNITHOLDERS)	$ 34,400	$ 66,558	$ 98,195	$ 122,720
Net income available to common unitholders per unit-basic (in dollars per unit) (Note 14)	$ 0.34	$ 0.67	$ 0.97	$ 1.24
Net income available to common unitholders per unit-diluted (in dollars per unit) (Note 14)	$ 0.33	$ 0.67	$ 0.97	$ 1.23
Weighted average common shares outstanding – basic (in units) (Note 14)	100,676,778	98,352,139	99,711,312	98,008,780
Weighted average common units outstanding - diluted (in units) (Note 14)	101,228,334	98,911,612	100,208,645	98,591,048
Rental [Member]
REVENUES
Revenue	$ 162,288	$ 159,954	$ 489,674	$ 475,527
Tenant reimbursements [Member]
REVENUES
Revenue	21,754	19,665	60,471	58,228
Other property income [Member]
REVENUES
Revenue	2,520	1,915	6,311	7,685
Property [Member]
EXPENSES
Property expenses	35,163	33,070	99,401	97,615
Kilroy Realty L.P. [Member]
REVENUES
Revenue	186,562	181,534	556,456	541,440
EXPENSES
Real estate taxes	17,462	16,371	52,421	50,878
Provision for bad debts (Note 12)	1,338	1,036	6,714	2,743
Ground leases	1,579	1,562	4,726	4,751
General and administrative expenses	19,277	14,514	56,599	43,750
Depreciation and amortization	62,700	62,567	189,421	185,737
Total expenses	137,519	129,120	409,282	385,474
OTHER (EXPENSES) INCOME
Interest income and other net investment gain/loss (Note 11)	342	1,526	1,147	3,629
Interest expense (Note 5)	(11,075)	(16,151)	(37,285)	(51,476)
Total other (expenses) income	(10,733)	(14,625)	(36,138)	(47,847)
INCOME FROM OPERATIONS BEFORE GAINS ON SALES OF REAL ESTATE	38,310	37,789	111,036	108,119
Net gain on sale of land	0	449	0	449
Gains on sales of depreciable operating properties	0	37,250	0	39,507
NET INCOME	38,310	75,488	111,036	148,075
Net income attributable to noncontrolling interests in consolidated property partnerships and subsidiaries	(3,317)	(3,086)	(11,135)	(9,648)
NET INCOME ATTRIBUTABLE TO KILROY REALTY CORPORATION (KILROY REALTY, L.P.)	34,993	72,402	99,901	138,427
Preferred distributions	0	(808)	0	(5,774)
Original issuance costs of redeemed preferred stock and preferred units	0	(3,744)	0	(7,589)
Total preferred distributions	0	(4,552)	0	(13,363)
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS (UNITHOLDERS)	$ 34,993	$ 67,850	$ 99,901	$ 125,064
Net income available to common unitholders per unit-basic (in dollars per unit) (Note 14)	$ 0.34	$ 0.67	$ 0.97	$ 1.23
Net income available to common unitholders per unit-diluted (in dollars per unit) (Note 14)	$ 0.33	$ 0.67	$ 0.96	$ 1.23
Weighted average common shares outstanding – basic (in units) (Note 14)	102,721,806	100,429,332	101,773,540	100,160,595
Weighted average common units outstanding - diluted (in units) (Note 14)	103,273,362	100,988,805	102,270,873	100,742,863
Dividends declared per common unit (in dollars per unit)	$ 0.455000	$ 0.425000	$ 1.335000	$ 1.225000
Kilroy Realty L.P. [Member] | Rental [Member]
REVENUES
Revenue	$ 162,288	$ 159,954	$ 489,674	$ 475,527
Kilroy Realty L.P. [Member] | Tenant reimbursements [Member]
REVENUES
Revenue	21,754	19,665	60,471	58,228
Kilroy Realty L.P. [Member] | Other property income [Member]
REVENUES
Revenue	2,520	1,915	6,311	7,685
Kilroy Realty L.P. [Member] | Property [Member]
EXPENSES
Property expenses	$ 35,163	$ 33,070	$ 99,401	$ 97,615

XML

Consolidated Statements of Capital (KILROY REALTY, L.P.) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2018	Mar. 31, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 38,310		$ 75,488	$ 111,036	$ 148,075
Redemption of Series G and H Preferred units					(200,000)
Non-cash amortization of share-based compensation				24,678	19,013
Exercise of stock options				0	0
Distributions to noncontrolling interests in consolidated property partnerships				(7,006)	(12,234)
Preferred distributions					(5,774)
Noncontrolling Interests [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				12,841	11,992
Distributions to noncontrolling interests in consolidated property partnerships				(7,006)	(12,234)
Kilroy Realty L.P. [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance		$ 3,960,316		3,960,316	3,759,317
Net income	38,310		75,488	111,036	148,075
Redemption of Series G and H Preferred units					(200,000)
Issuance of common units				130,744	308,812
Issuance of share-based compensation awards				3,298	5,291
Non-cash amortization of share-based compensation				24,678	19,013
Exercise of stock options				41	12,051
Exercise of stock options				0	0
Repurchase of common units, stock options and restricted stock units				(16,553)	(12,986)
Contributions from noncontrolling interests in consolidated property partnerships		8,273			250
Distributions to noncontrolling interests in consolidated property partnerships				(7,006)	(12,234)
Preferred distributions					(5,774)
Distributions declared per common unit ($1.335 and $1.225 per unit for the nine months ended September 2018 and 2017, respectively)				(139,908)	(125,935)
Ending balance	4,074,919		3,895,880	4,074,919	3,895,880
Kilroy Realty L.P. [Member] | Partners Capital Preferred Units [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance					192,411
Redemption of Series G and H Preferred units					(192,411)
Ending balance			0		0
Kilroy Realty L.P. [Member] | Partners Capital Common Unit [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance		$ 3,773,941		$ 3,773,941	$ 3,431,768
Beginning balance (in units)		100,697,526		100,697,526	95,600,982
Net income				$ 99,901	$ 138,427
Redemption of Series G and H Preferred units					$ (7,589)
Issuance of common units (in units)				1,817,195	4,427,500
Issuance of common units				$ 130,744	$ 308,812
Issuance of share-based compensation awards				3,298	5,291
Non-cash amortization of share-based compensation				$ 24,678	$ 19,013
Exercise of stock options (in shares)				1,000	282,000
Exercise of stock options				$ 41	$ 12,051
Settlement of restricted stock units (in units)				488,354	317,848
Exercise of stock options				$ 0	$ 0
Repurchase of common units and restricted stock units (in units)				(231,800)	(168,881)
Repurchase of common units, stock options and restricted stock units				$ (16,553)	$ (12,986)
Contributions from noncontrolling interests in consolidated property partnerships		$ 0
Preferred distributions					(5,774)
Distributions declared per common unit ($1.335 and $1.225 per unit for the nine months ended September 2018 and 2017, respectively)				(139,908)	(125,935)
Ending balance	$ 3,876,142		$ 3,763,078	$ 3,876,142	$ 3,763,078
Ending balance (in units)	102,772,275		100,459,449	102,772,275	100,459,449
Kilroy Realty L.P. [Member] | Total Partners Capital [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance					$ 3,624,179
Net income					138,427
Redemption of Series G and H Preferred units					(200,000)
Issuance of common units					308,812
Issuance of share-based compensation awards					5,291
Non-cash amortization of share-based compensation					19,013
Exercise of stock options					12,051
Exercise of stock options					0
Repurchase of common units, stock options and restricted stock units					(12,986)
Contributions from noncontrolling interests in consolidated property partnerships
Preferred distributions					(5,774)
Distributions declared per common unit ($1.335 and $1.225 per unit for the nine months ended September 2018 and 2017, respectively)					(125,935)
Ending balance			$ 3,763,078		3,763,078
Kilroy Realty L.P. [Member] | Noncontrolling Interests [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance		186,375		$ 186,375	135,138
Net income				11,135	9,648
Contributions from noncontrolling interests in consolidated property partnerships		$ 8,273			250
Distributions to noncontrolling interests in consolidated property partnerships				(7,006)	(12,234)
Ending balance	$ 198,777		$ 132,802	$ 198,777	$ 132,802

XML

Consolidated Statements of Capital (KILROY REALTY, L.P.) (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Kilroy Realty L.P. [Member]
Dividends declared per common unit (in dollars per unit)	$ 0.455000	$ 0.425000	$ 1.335000	$ 1.225000

XML

Consolidated Statements of Cash Flows (KILROY REALTY, L.P.) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 111,036	$ 148,075
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of real estate assets and leasing costs	186,242	181,875
Depreciation of non-real estate furniture, fixtures and equipment	3,179	3,862
Increase in provision for bad debts (Note 12)	6,714	2,743
Non-cash amortization of share-based compensation awards	18,901	13,617
Non-cash amortization of deferred financing costs and debt discounts and premiums	816	2,398
Non-cash amortization of net below market rents	(7,647)	(6,026)
Gain on sale of depreciable operating properties	0	(39,507)
Gain on sale of land	0	(449)
Non-cash amortization of deferred revenue related to tenant-funded tenant improvements	(13,680)	(12,394)
Straight-line rents	(16,293)	(25,537)
Net change in other operating assets	(9,163)	(16,970)
Net change in other operating liabilities	37,110	24,855
Net cash provided by operating activities	317,215	276,542
CASH FLOWS FROM INVESTING ACTIVITIES:
Expenditures for acquisition of undeveloped land (Note 2)	(311,299)	0
Expenditures for development properties and undeveloped land	(311,347)	(270,839)
Expenditures for acquisition of operating properties (Note 2)	(111,029)	0
Expenditures for operating properties	(107,825)	(61,875)
Net proceeds received from dispositions	0	182,492
Net decrease (increase) in acquisition-related deposits	21,000
Net decrease (increase) in acquisition-related deposits		(30,490)
Proceeds received from repayment of note receivable (Note 4)	15,100	0
Net cash used in investing activities	(805,400)	(180,712)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings on unsecured revolving credit facility (Note 5)	645,000	70,000
Repayments on unsecured revolving credit facility (Note 5)	(285,000)	(10,000)
Borrowings on unsecured debt (Note 5)	120,000	0
Principal payments on secured debt	(2,670)	(5,740)
Proceeds from the issuance of unsecured debt (Note 5)	50,000	250,000
Repayments of unsecured debt	0	(189,000)
Financing costs	(2,278)	(7,480)
Net proceeds from issuance of common units (Note 8)	130,744	308,812
Redemption of Series G and H Preferred units	0	(200,000)
Repurchase of common units and restricted stock units	(16,553)	(12,986)
Proceeds from exercise of stock options	41	12,051
Distributions to noncontrolling interests in consolidated property partnerships	(7,014)	(12,234)
Contributions from noncontrolling interests in consolidated property partnerships	8,273	250
Distributions paid to common unitholders	(132,639)	(297,993)
Distributions paid to preferred unitholders	0	(7,409)
Net cash provided by (used in) financing activities	507,904	(101,729)
Net increase (decrease) in cash and cash equivalents and restricted cash	19,719	(5,899)
Cash and cash equivalents and restricted cash, beginning of period	66,798	250,129
Cash and cash equivalents and restricted cash, end of period	86,517	244,230
Kilroy Realty L.P. [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	111,036	148,075
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of real estate assets and leasing costs	186,242	181,875
Depreciation of non-real estate furniture, fixtures and equipment	3,179	3,862
Increase in provision for bad debts (Note 12)	6,714	2,743
Non-cash amortization of share-based compensation awards	18,901	13,617
Non-cash amortization of deferred financing costs and debt discounts and premiums	816	2,398
Non-cash amortization of net below market rents	(7,647)	(6,026)
Gain on sale of depreciable operating properties	0	(39,507)
Gain on sale of land	0	(449)
Non-cash amortization of deferred revenue related to tenant-funded tenant improvements	(13,680)	(12,394)
Straight-line rents	(16,293)	(25,537)
Net change in other operating assets	(9,163)	(16,970)
Net change in other operating liabilities	37,110	24,855
Net cash provided by operating activities	317,215	276,542
CASH FLOWS FROM INVESTING ACTIVITIES:
Expenditures for acquisition of undeveloped land (Note 2)	(311,299)	0
Expenditures for development properties and undeveloped land	(311,347)	(270,839)
Expenditures for acquisition of operating properties (Note 2)	(111,029)	0
Expenditures for operating properties	(107,825)	(61,875)
Net proceeds received from dispositions	0	182,492
Net decrease (increase) in acquisition-related deposits	21,000
Net decrease (increase) in acquisition-related deposits		(30,490)
Proceeds received from repayment of note receivable (Note 4)	15,100	0
Net cash used in investing activities	(805,400)	(180,712)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings on unsecured revolving credit facility (Note 5)	645,000	70,000
Repayments on unsecured revolving credit facility (Note 5)	(285,000)	(10,000)
Borrowings on unsecured debt (Note 5)	120,000	0
Principal payments on secured debt	(2,670)	(5,740)
Proceeds from the issuance of unsecured debt (Note 5)	50,000	250,000
Repayments of unsecured debt	0	(189,000)
Financing costs	(2,278)	(7,480)
Net proceeds from issuance of common units (Note 8)	130,744	308,812
Redemption of Series G and H Preferred units	0	(200,000)
Repurchase of common units and restricted stock units	(16,553)	(12,986)
Proceeds from exercise of stock options	41	12,051
Distributions to noncontrolling interests in consolidated property partnerships	(7,014)	(12,234)
Contributions from noncontrolling interests in consolidated property partnerships	8,273	250
Distributions paid to common unitholders	(132,639)	(297,993)
Distributions paid to preferred unitholders	0	(7,409)
Net cash provided by (used in) financing activities	507,904	(101,729)
Net increase (decrease) in cash and cash equivalents and restricted cash	19,719	(5,899)
Cash and cash equivalents and restricted cash, beginning of period	66,798	250,129
Cash and cash equivalents and restricted cash, end of period	$ 86,517	$ 244,230

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Organization, Ownership and Basis of Presentation

9 Months Ended

Sep. 30, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization, Ownership and Basis of Presentation

Organization, Ownership and Basis of Presentation

Organization and Ownership

Kilroy Realty Corporation (the “Company”) is a self-administered real estate investment trust (“REIT”) active in premier office and mixed-use submarkets along the West Coast. We own, develop, acquire and manage real estate assets, consisting primarily of Class A properties in the coastal regions of Greater Los Angeles, Orange County, San Diego County, the San Francisco Bay Area and Greater Seattle, which we believe have strategic advantages and strong barriers to entry. Class A real estate encompasses attractive and efficient buildings of high quality that are attractive to tenants, are well-designed and constructed with above-average material, workmanship and finishes and are well-maintained and managed. We qualify as a REIT under the Internal Revenue Code of 1986, as amended (the “Code”). The Company’s common stock is publicly traded on the New York Stock Exchange (“NYSE”) under the ticker symbol “KRC.”

We own our interests in all of our real estate assets through Kilroy Realty, L.P. (the “Operating Partnership”) and Kilroy Realty Finance Partnership, L.P. (the “Finance Partnership”). We generally conduct substantially all of our operations through the Operating Partnership. Unless stated otherwise or the context indicates otherwise, the terms “Kilroy Realty Corporation” or the “Company,” “we,” “our,” and “us” refer to Kilroy Realty Corporation and its consolidated subsidiaries and the term “Operating Partnership” refers to Kilroy Realty, L.P. and its consolidated subsidiaries. The descriptions of our business, employees and properties apply to both the Company and the Operating Partnership.

Our stabilized portfolio of operating properties was comprised of the following properties at September 30, 2018:

	Number of Buildings	Rentable Square Feet (unaudited)	Number of Tenants	Percentage  Occupied (unaudited)		Percentage Leased (unaudited)
Stabilized Office Properties	104	13,891,493	524	93.5	%	96.6	%

	Number of Buildings	Number of Units	2018 Average Occupancy (unaudited)
Stabilized Residential Property	1	200	83.3	%

Our stabilized portfolio includes all of our properties with the exception of development and redevelopment properties currently committed for construction, under construction, or in the tenant improvement phase, undeveloped land and real estate assets held for sale. We define redevelopment properties as those properties for which we expect to spend significant development and construction costs on the existing or acquired buildings pursuant to a formal plan, the intended result of which is a higher economic return on the property. We define properties in the tenant improvement phase as properties that we are developing or redeveloping where the project has reached cold shell condition and is ready for tenant improvements, which may require additional major base building construction before being placed in service. Projects in the tenant improvement phase are added to our stabilized portfolio once the project reaches the earlier of 95% occupancy or one year from the date of the cessation of major base building construction activities. Costs capitalized to construction in progress for development and redevelopment properties are transferred to land and improvements, buildings and improvements, and deferred leasing costs on our consolidated balance sheets at the historical cost of the property as the projects are placed in service.

As of September 30, 2018, the following properties were excluded from our stabilized portfolio. We did not have any redevelopment properties or properties held for sale at September 30, 2018.

	Number of Properties/Projects	Estimated Rentable Square Feet (1) (unaudited)
In-process development projects - tenant improvement (2)	2	1,150,000
In-process development projects - under construction (3)	3	956,000

________________________

(1) Estimated rentable square feet upon completion.

(2) Includes 86,000 square feet of Production, Distribution, and Repair (“PDR”) space at 100 Hooper.

(3) In addition to the estimated office and PDR rentable square feet noted above, development projects under construction also include 120,000 square feet of retail space and 608 residential units.

Our stabilized portfolio also excludes our future development pipeline, which as of September 30, 2018 was comprised of sevenpotential development sites, representing approximately 80 gross acres of undeveloped land.

As of September 30, 2018, all of our properties and development projects were owned and all of our business was conducted in the state of California with the exception of twelve office properties and one development project under construction located in the state of Washington. All of our properties and development projects are 100% owned, excluding four office properties owned by three consolidated property partnerships and a development site held by consolidated variable interest entities for future transactions intended to qualify as like-kind exchanges pursuant to Section 1031 of the Code (“Section 1031 Exchanges”).

Two of the three property partnerships, 100 First Street Member, LLC (“100 First LLC”) and 303 Second Street Member, LLC (“303 Second LLC”), each owned one office property in San Francisco, California through subsidiary REITs. As of September 30, 2018, the Company owned a 56% common equity interest in both 100 First LLC and 303 Second LLC. The third property partnership, Redwood City Partners, LLC (“Redwood LLC”) owned two office properties in Redwood City, California. As of September 30, 2018, the Company owned an approximate 93% common equity interest in Redwood LLC. The remaining interests in all three property partnerships were owned by unrelated third parties.

Ownership and Basis of Presentation

The consolidated financial statements of the Company include the consolidated financial position and results of operations of the Company, the Operating Partnership, the Finance Partnership, 303 Second LLC, 100 First LLC, Redwood LLC and all of our wholly-owned and controlled subsidiaries. The consolidated financial statements of the Operating Partnership include the consolidated financial position and results of operations of the Operating Partnership, the Finance Partnership, 303 Second LLC, 100 First LLC, Redwood LLC and all of our wholly-owned and controlled subsidiaries. All intercompany balances and transactions have been eliminated in the consolidated financial statements.

As of September 30, 2018, the Company owned an approximate 98.0% common general partnership interest in the Operating Partnership. The remaining approximate 2.0% common limited partnership interest in the Operating Partnership as of September 30, 2018 was owned by non-affiliated investors and certain of our executive officers and directors. Both the general and limited common partnership interests in the Operating Partnership are denominated in common units. Generally, the number of common units held by the Company is equivalent to the number of outstanding shares of the Company’s common stock, and the rights of all the common units to quarterly distributions and payments in liquidation mirror those of the Company’s common stockholders. The common limited partners have certain redemption rights as provided in the Operating Partnership’s Seventh Amended and Restated Agreement of Limited Partnership, as amended, the “Partnership Agreement.”

Kilroy Realty Finance, Inc., which is a wholly-owned subsidiary of the Company, is the sole general partner of the Finance Partnership and owns a 1.0% common general partnership interest in the Finance Partnership. The Operating Partnership owns the remaining 99.0% common limited partnership interest. With the exception of the Operating Partnership and our consolidated property partnerships, all of our subsidiaries are wholly-owned.

The accompanying interim financial statements have been prepared by management in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and in conjunction with the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures required for annual financial statements have been condensed or excluded pursuant to SEC rules and regulations. Accordingly, the interim financial statements do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, the accompanying interim financial statements reflect all adjustments of a normal and recurring nature that are considered necessary for a fair presentation of the results for the interim periods presented. However, the results of operations for the interim periods are not necessarily indicative of the results that may be expected for the year ending December 31, 2018. The interim financial statements for the Company and the Operating Partnership should be read in conjunction with the audited consolidated financial statements and notes thereto included in our annual report on Form 10-K for the year ended December 31, 2017.

Variable Interest Entities

The Operating Partnership is a variable interest entity (“VIE”) that is consolidated by the Company as the primary beneficiary as the Operating Partnership is a limited partnership in which the common limited partners do not have substantive kick-out or participating rights. At September 30, 2018, the consolidated financial statements of the Company included five VIEs in addition to the Operating Partnership: 100 First LLC, 303 Second LLC and three entities established during the second quarter of 2018 to facilitate potential future Section 1031 Exchanges. At September 30, 2018, the Operating Partnership was determined to be the primary beneficiary of these five VIEs since the Operating Partnership had the ability to control the activities that most significantly impact each of the VIE’s economic performance. As of September 30, 2018, the five VIEs’ total assets, liabilities and noncontrolling interests included on our consolidated balance sheet were approximately $828.3 million (of which $753.8 million related to real estate held for investment), approximately $86.2 million and approximately $187.6 million, respectively. Revenues, income and net assets generated by 100 First LLC and 303 Second LLC may only be used to settle their contractual obligations, which primarily consist of operating expenses, capital expenditures and required distributions.

At December 31, 2017, the consolidated financial statements of the Company and the Operating Partnership included two VIEs in which we were deemed to be the primary beneficiary: 100 First LLC and 303 Second LLC. At December 31, 2017, the impact of consolidating the VIEs increased the Company’s total assets, liabilities and noncontrolling interests on our consolidated balance sheet by approximately $426.5 million (of which $382.1 million related to real estate held for investment), approximately $27.3 million and approximately $175.4 million, respectively.

Accounting Pronouncements Adopted January 1, 2018

Effective January 1, 2018, we adopted Financial Accounting Standards Board (“FASB”) ASU No. 2014-09 “Revenue From Contracts with Customers (Topic 606)” (“ASU 2014-09”) and the related FASB ASU Nos. 2016-12 and 2016-20, which provide practical expedients, technical corrections, and improvements for certain aspects of ASU 2014-09, on a modified retrospective basis. ASU 2014-09 establishes a single comprehensive model for entities to use in accounting for revenue from contracts with customers and supersedes most of the existing revenue recognition guidance.

We evaluated each of the Company’s revenue streams to determine the sources of revenue that are impacted by ASU 2014-09 and concluded that two revenue streams, sales of real estate and revenue from our multi-tenant parking arrangements, fall within the scope of Topic 606. We evaluated the impact of the adoption of the guidance on the timing of gain recognition for our historical dispositions and concluded there was no significant impact to our consolidated financial statements given the straight forward nature of our historical disposition transactions. We also evaluated the impact of the guidance on the timing and pattern of revenue recognition for our multi-tenant parking arrangements and determined there was no significant impact to our consolidated financial statements. We generally provide parking for our multi-tenant properties based on the prevailing market rate per parking space, which adjusts based on prevailing market rates during the tenant’s occupancy, and we recognize parking revenue as parking spaces are utilized by the tenant. Given the structure of these arrangements whereby the amount of parking revenue we recognize corresponds directly to the tenant’s use, we were able to apply the practical expedient provided in Accounting Standards Codification (“ASC”) 606-10-50-14(b) (the “right to invoice” practical expedient). As a result of applying this practical expedient, we are not required to disclose the transaction price allocated to future performance obligations for multi-tenant parking since we cannot predict or estimate the use of such parking spaces. During the three months ended September 30, 2018 and 2017, we recognized $6.7 million and $6.6 million, respectively, of parking revenue for arrangements that are within the scope of Topic 606, which is included in rental revenues on our consolidated statements of operations. During the nine months ended September 30, 2018 and 2017, we recognized$20.2 millionand $20.3 million, respectively, of parking revenue for arrangements that are within the scope of Topic 606, which is included in rental revenues on our consolidated statements of operations. We concluded that the adoption of Topic 606 did not have a material impact on our consolidated financial statements or a material impact on the notes to our consolidated financial statements.

Effective January 1, 2018, we adopted FASB ASU No. 2017-09 “Compensation - Stock Compensation (Topic 718)” on a prospective basis. Under the guidance, an entity will not apply modification accounting to a share-based payment award if the award’s fair value, vesting conditions, and classification as an equity or liability instrument remain the same immediately before and after the change. The adoption of this guidance did not have an impact on our consolidated financial statements or notes to our consolidated financial statements.

Effective January 1, 2018, we adopted FASB ASU No. 2017-05 “Other Income - Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20)” (“ASU 2017-05”) on a retrospective basis. This standard clarifies the scope of the original guidance within Subtopic 610-20 “Gains and Losses from the Derecognition of Nonfinancial Assets” that was issued in connection with ASU 2014-09 which provided guidance for recognizing gains and losses from the transfer of nonfinancial assets in transactions with noncustomers. Additionally, ASU 2017-05 adds guidance pertaining to the partial sales of real estate and clarifies that nonfinancial assets within the scope of ASC 610-20 may include nonfinancial assets transferred within a legal entity to a counterparty. For example, a parent may transfer control of nonfinancial assets by transferring ownership interests in a consolidated subsidiary. We evaluated the impact of the new amendments on our historical transactions and concluded that there was no impact. As such, the adoption of this guidance did not have an impact on our consolidated financial statements or notes to our consolidated financial statements.

Effective January 1, 2018, we adopted FASB ASU No. 2016-15 (“ASU 2016-15”) which provides guidance where there is diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows, on a retrospective basis. The adoption of this guidance did not have an impact on our consolidated financial statements or notes to our consolidated financial statements.

Effective January 1, 2018, we adopted FASB ASU No. 2016-01 (“ASU 2016-01”) which amends the accounting guidance on the classification and measurement of financial instruments and FASB ASU No. 2018-03 (“ASU 2018-03”) which provides technical corrections and improvements to ASU 2016-01, on a modified retrospective basis. The amendments require that all investments in equity securities, including other ownership interests, are reported at fair value with changes in fair value reported in net income. This requirement does not apply to investments that qualify for equity method accounting or to those that result in consolidation of the investee or for which the entity has elected the predictability exception to fair value measurement. Additionally, the amendments require that the portion of the total fair value change caused by a change in instrument-specific credit risk for financial liabilities for which the fair value option has been elected would be recognized in other comprehensive income. Any accumulated amount remaining in other comprehensive income is reclassified to earnings when the liability is extinguished. The adoption of this guidance did not have an impact on our consolidated financial statements or notes to our consolidated financial statements since our only financial instruments within the scope of ASU 2016-01 and 2018-03 are the marketable securities related to our deferred compensation plan which are classified as trading securities and marked to market at fair value through earnings each reporting period.

Accounting Pronouncements Effective January 1, 2019

ASU No. 2016-02 “Leases (Topic 842)”

On February 25, 2016, the FASB issued ASU No. 2016-02 “Leases (Topic 842)” (“ASU 2016-02”) to amend the accounting guidance for leases. The accounting applied by a lessor is largely unchanged under ASU 2016-02. However, the standard requires lessees to recognize lease assets and lease liabilities for leases classified as operating leases on the balance sheet. Lessees will recognize in the statement of financial position a liability to make lease payments and a right-of-use asset representing its right to use the underlying asset for the lease term. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and lease liabilities. If a lessee makes this election, it will recognize lease expense for such leases generally on a straight-line basis over the lease term. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018. Early adoption is permitted.

In July 2018, the FASB issued ASU No. 2018-11 which (1) simplifies transition requirements for both lessees and lessors by adding an option that permits an organization to apply the transition provisions of the new standard at its adoption date instead of at the earliest comparative period presented in its financial statements and (2) provides a practical expedient for lessors that permits lessors to make an accounting policy election to not separate nonlease components from the associated lease components, if the following two criteria are met: (1) the timing and pattern of transfer of the lease and nonlease components are the same and (2) the lease component would be classified as an operating lease if accounted for separately. For leases where we are the lessor, we plan to elect the optional transition relief and apply the practical expedients provided by ASU 2018-11. As a result, leases where we are the lessor will be accounted for in a similar method to existing standards with the underlying leased asset being reported and recognized as a real estate asset.

In August 2018, the FASB released an exposure draft to amend ASU 2016-02 that clarifies lessor treatment of sales taxes and other similar taxes collected from lessees, lessor costs paid directly by lessees and recognition of variable payments for contracts with lease and nonlease components. If the amendments are codified as currently drafted, we do not expect the amendments to have an impact on our consolidated financial statements.

ASU 2016-02 also specifies that upon adoption, lessors will no longer be able to capitalize and amortize certain leasing related costs and instead will only be permitted to capitalize and amortize incremental direct leasing costs. As a result, we have concluded that upon the adoption of the standard, we will be required to expense as incurred certain leasing costs we are currently able to capitalize and amortize as deferred leasing costs under existing guidance. We continue to evaluate the impact of this change in the guidance and we currently expect this change will have a material impact to the Company’s consolidated financial statements and results of operations upon adoption of the standard on January 1, 2019.

For leases where we are the lessee, specifically for our ground leases, the adoption of the standard will significantly change the accounting on our consolidated balance sheets since both existing ground leases and any future ground leases will be required to be recorded on the Company’s consolidated balance sheets as an obligation of the Company. Existing ground leases executed before the January 1, 2019 adoption date will continue to be accounted for as operating leases and the new guidance will not have a material impact on our recognition of ground lease expense or our results of operations. However, we will be required to recognize a right of use asset and a lease liability on our consolidated balance sheets equal to the present value of the minimum lease payments required in accordance with each ground lease. As of September 30, 2018, our future undiscounted minimum rental payments under these leases totaled$248.6 million, with several of the leases containing provisions for rental payments to fluctuate based on fair market value and operating income measurements with expirations through 2093. In addition, we currently believe that for new ground leases entered into after the adoption date of the new standard, such leases could be required to be accounted for as financing type leases, resulting in ground lease expense recorded using the effective interest method instead of on a straight-line basis over the term of the lease. This could have a significant impact on our results of operations if we enter into material new ground leases after the date of adoption since ground lease expense calculated using the effective interest method results in an increased amount of ground lease expense in the earlier years of a ground lease as compared to the current straight-line method.

Accounting Pronouncements Effective in 2020 and Beyond

ASU No. 2016-13 “Financial Instruments - Credit Losses (Topic 326)”

On June 16, 2016, the FASB issued ASU No. 2016-13 (“ASU 2016-13”) to amend the accounting for credit losses for certain financial instruments. Under the new guidance, an entity recognizes its estimate of expected credit losses as an allowance, which the FASB believes will result in more timely recognition of such losses.  In August 2018, the FASB released an exposure draft to amend ASU 2016-03. The proposed amendment would clarify that receivables arising from operating leases are not within the scope of Subtopic 326-20 “Financial Instruments – Credit Losses.” Instead, impairment of receivables arising from operating leases should be accounted for under Subtopic 842-30 “Leases – Lessor.” ASU 2016-13 is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The Company does not currently anticipate that the guidance will have a material impact on the consolidated financial statements or notes to the consolidated financial statements.

ASU No. 2018-13 “Fair Value Measurement (Topic 820)”

On August 28, 2018, the FASB issued ASU No. 2018-13 (“ASU 2018-13”) to amend the disclosure requirements for fair value measurements. The amendments in ASU 2018-13 include new, modified and eliminated disclosure requirements and are the result of a broader disclosure project called FASB Concepts Statement, Conceptual Framework for Financial Reporting - Chapter 8: Notes to Financial Statements, which the Board finalized on August 28, 2018. The Board used the guidance in the Concepts Statement to improve the effectiveness of ASC 820’s disclosure requirements. ASU 2018-13 is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for any eliminated or modified disclosures. The Company currently anticipates that the guidance will not have a significant impact on the disclosures in the notes to the consolidated financial statements.

ASU No. 2018-15 “Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40)”

On August 29, 2018, the FASB issued ASU No. 2018-15 (“ASU 2018-15”) to amend a customer’s accounting for implementation costs incurred in a cloud computing arrangement that is a service contract. ASU 2018-15 aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). ASU 2018-15 is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted, including adoption in any interim period. ASU 2018-15 can be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. The Company is currently evaluating the impact of ASU 2018-15 on the consolidated financial statements and notes to the consolidated financial statements.

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Acquisitions

9 Months Ended

Sep. 30, 2018

Asset Acquisitions [Abstract]

Acquisitions

Acquisitions

Operating Property Acquisitions

During the nine months ended September 30, 2018, we acquired the three operating properties listed below from an unrelated third party. The acquisition was funded with proceeds from the Company’s unsecured revolving credit facility and unsecured term loan facility.

Property	Date of Acquisition	Number of Buildings	Rentable Square Feet (unaudited)	Purchase Price (in millions) (1)
345, 347 & 349 Oyster Point Boulevard, South San Francisco, CA	January 31, 2018	3	145,530	$	111.0

________________________ 

(1) Excludes acquisition-related costs.

The related assets, liabilities and results of operations of the acquired properties are included in the consolidated financial statements as of the date of acquisition. The following table summarizes the assets acquired and liabilities assumed as of the date of acquisition, excluding acquisition-related costs:

	Total 2018 Operating Property Acquisitions
Assets
Land and improvements	$	50,928
Buildings and improvements (1)	59,123
Deferred leasing costs and acquisition-related intangible assets (2)	4,470
Total assets acquired	$	114,521
Liabilities
Deferred revenue and acquisition-related intangible liabilities (3)	$	3,521
Total liabilities assumed	3,521
Net assets and liabilities acquired	$	111,000

________________________ 

(1) Represents buildings, building improvements and tenant improvements.

(2) Represents in-place leases (approximately $3.8 million with a weighted average amortization period of 2.6 years) and leasing commissions (approximately $0.7 million with a weighted average amortization period of 3.5 years).

(3) Represents below-market leases (approximately $3.5 million with a weighted average amortization period of 9.8 years).

Development Project Acquisitions

During the nine months ended September 30, 2018, we acquired the following development site, which is located adjacent to the three operating properties we acquired in January 2018, from an unrelated third party. The acquisition was funded with proceeds from the Company’s unsecured revolving credit facility and the Company’s at-the-market stock offering program.

Project	Date of Acquisition	City/Submarket	Type	Purchase Price (in millions) (1)
Kilroy Oyster Point	June 1, 2018	South San Francisco	Land	$	308.2

________________________ 

(1) Excludes acquisition-related costs. In connection with this acquisition, we also recorded $40.6 million in accrued liabilities and environmental remediation liabilities at the date of acquisition, which are not included in the purchase price above. As of September 30, 2018, the purchase price and assumed liabilities are included in undeveloped land and construction in progress and the assumed liabilities are included in accounts payable, accrued expenses and other liabilities on the Company’s consolidated balance sheets.

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Receivables

9 Months Ended

Sep. 30, 2018

Receivables [Abstract]

Receivables

Receivables

Current Receivables, net

Current receivables, net consisted of the following as of September 30, 2018 and December 31, 2017:

	September 30, 2018			December 31, 2017
	(in thousands)
Current receivables	$	21,674		$	19,235
Allowance for uncollectible tenant receivables	(4,155		)	(2,309		)
Current receivables, net	$	17,519		$	16,926

Deferred Rent Receivables, net

Deferred rent receivables, net consisted of the following as of September 30, 2018 and December 31, 2017:

	September 30, 2018			December 31, 2017
	(in thousands)
Deferred rent receivables	$	265,858		$	249,629
Allowance for deferred rent receivables	(4,855		)	(3,238		)
Deferred rent receivables, net	$	261,003		$	246,391

Other Significant Events

During the nine months ended September 30, 2018, we recognized $6.7 million of provision for bad debts. The provision for bad debts is primarily due to a $7.0 million increase in the provision for one tenant recognized during the second quarter of 2018.

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Prepaid Expenses and Other Assets, Net

9 Months Ended

Sep. 30, 2018

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Prepaid Expenses and Other Assets, Net

Prepaid Expenses and Other Assets, Net

Prepaid expenses and other assets, net consisted of the following at September 30, 2018 and December 31, 2017:

	September 30, 2018		December 31, 2017
	(in thousands)
Furniture, fixtures and other long-lived assets, net	$	36,717	$	39,686
Notes receivable, net (1)	2,046		19,912
Prepaid expenses & acquisition deposits	33,912		55,108
Total prepaid expenses and other assets, net	$	72,675	$	114,706

________________________ 

(1) During the nine months ended September 30, 2018, a note receivable with a balance of $15.1 million was repaid to the Company. Notes receivable are shown net of a valuation allowance of approximately $2.9 million as of September 30, 2018.

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Secured and Unsecured Debt of the Operating Partnership

9 Months Ended

Sep. 30, 2018

Kilroy Realty L.P. [Member]

Debt Instrument [Line Items]

Secured and Unsecured Debt of the Operating Partnership

Secured and Unsecured Debt of the Operating Partnership

The Company generally guarantees all of the Operating Partnership’s unsecured debt obligations including the unsecured revolving credit facility, the unsecured term loan facility and all of the unsecured senior notes.

Unsecured Senior Notes - Private Placement

On May 11, 2018, the Operating Partnership entered into a Note Purchase Agreement (the “Note Purchase Agreement”) in connection with the issuance and sale of $50.0 million principal amount of the Operating Partnership’s 4.30% Senior Notes, Series A, due July 18, 2026 (the “Series A Notes”), and $200.0 million principal amount of the Operating Partnership’s 4.35% Senior Notes, Series B, due October 18, 2026 (the “Series B Notes” and, together with the Series A Notes, the “Series A and B Notes”), pursuant to a private placement. The Company drew the full amount of the Series A Notes on July 18, 2018. As of September 30, 2018, there were no amounts issued or outstanding under the Series B Notes. On October 22, 2018, the Company drew the full amount of the Series B Notes, the proceeds of which were used to repay a portion of the outstanding balance on our unsecured revolving credit facility. The Series A and B Notes mature on their respective due dates, unless earlier redeemed or prepaid pursuant to the terms of the Note Purchase Agreement. Interest on the Series A and B Notes is payable semi-annually in arrears on April 18 and October 18 of each year beginning April 18, 2019.

The Operating Partnership may, at its option and upon notice to the purchasers of the Series A and B Notes, prepay at any time all, or from time to time any part of the Series A and B Notes then outstanding (in an amount not less than 5% of the aggregate principal amount of the Series A and B Notes then outstanding in the case of a partial prepayment), at 100% of the principal amount so prepaid, plus the make-whole amount determined for the prepayment date with respect to such principal amount as set forth in the Note Purchase Agreement.

In connection with the issuance of the Series A and B Notes, the Company will enter into an agreement whereby it will guarantee the payment by the Operating Partnership of all amounts due with respect to the Series A and B Notes and the performance by the Operating Partnership of its obligations under the Note Purchase Agreement.

Unsecured Revolving Credit Facility and Term Loan Facility

The following table summarizes the balance and terms of our unsecured revolving credit facility as of September 30, 2018 and December 31, 2017:

	September 30, 2018			December 31, 2017
	(in thousands)
Outstanding borrowings	$	330,000		$	—
Remaining borrowing capacity	420,000			750,000
Total borrowing capacity (1)	$	750,000		$	750,000
Interest rate (2)	3.23		%	2.56		%
Facility fee-annual rate (3)	0.200%
Maturity date	July 2022

________________________

(1) We may elect to borrow, subject to bank approval and obtaining commitments for any additional borrowing capacity, up to an additional $600.0 million under an accordion feature under the terms of the unsecured revolving credit facility and unsecured term loan facility.

(2) Our unsecured revolving credit facility interest rate was calculated based on an annual rate of LIBOR plus 1.000% as of September 30, 2018 and December 31, 2017.

(3) Our facility fee is paid on a quarterly basis and is calculated based on the total borrowing capacity. In addition to the facility fee, we incurred debt origination and legal costs. As of September 30, 2018 and December 31, 2017, $5.0 millionand $6.0 million of unamortized deferred financing costs, respectively, which are included in prepaid expenses and other assets, net on our consolidated balance sheets, remained to be amortized through the maturity date of our unsecured revolving credit facility.

The Company intends to borrow under the unsecured revolving credit facility from time to time for general corporate purposes, to finance development and redevelopment expenditures, to fund potential acquisitions and to potentially repay long-term debt. Refer to Note 17 for repayments of outstanding borrowings under the unsecured revolving credit facility subsequent to September 30, 2018.

During the first quarter of 2018, we borrowed the full $150.0 million borrowing capacity of our unsecured term loan facility. In connection with the funding of the outstanding borrowings, we transferred $30.0 million of outstanding borrowings under the unsecured revolving credit facility to the balance of our unsecured term loan facility. As a result, only $120.0 million of cash proceeds were received from the funding of the unsecured term loan facility. The following table summarizes the balance and terms of our unsecured term loan facility as of September 30, 2018 and December 31, 2017:

	September 30, 2018			December 31, 2017
	(in thousands)
Outstanding borrowings	$	150,000		$	—
Remaining borrowing capacity	—			150,000
Total borrowing capacity (1)	$	150,000		$	150,000
Interest rate (2)	3.23		%	2.66		%
Undrawn facility fee-annual rate (3)	0.200%
Maturity date	July 2022

________________________

(1) As of September 30, 2018 and December 31, 2017, $1.0 million and $1.2 million of unamortized deferred financing costs, respectively, remained to be amortized through the maturity date of our unsecured term loan facility.

(2) Our unsecured term loan facility interest rate was calculated based on an annual rate of LIBOR plus 1.100% as of September 30, 2018 and December 31, 2017.

(3) Prior to borrowing the full capacity of our unsecured term loan facility, the undrawn facility fee was calculated based on any unused borrowing capacity and was paid on a quarterly basis.

Debt Covenants and Restrictions

The unsecured revolving credit facility, unsecured term loan facility, unsecured senior notes, and certain other secured debt arrangements contain covenants and restrictions requiring us to meet certain financial ratios and reporting requirements. Some of the more restrictive financial covenants include a maximum ratio of total debt to total asset value, a minimum fixed-charge coverage ratio, a minimum unsecured debt ratio and a minimum unencumbered asset pool debt service coverage ratio. Noncompliance with one or more of the covenants and restrictions could result in the full principal balance of the associated debt becoming immediately due and payable. We believe we were in compliance with all of our debt covenants as of September 30, 2018.

Debt Maturities

The following table summarizes the stated debt maturities and scheduled amortization payments of our issued and outstanding debt, excluding unamortized debt discounts, premiums and deferred financing costs, as of September 30, 2018:

Year	(in thousands)
Remaining 2018	$	914
2019	76,309
2020	255,137
2021	5,342
2022	485,554
Thereafter	2,068,469
Total (1)	$	2,891,725

________________________

(1) Includes gross principal balance of outstanding debt before the effect of the following at September 30, 2018: $13.3 millionof unamortized deferred financing costs for the unsecured term loan facility, unsecured senior notes and secured debt, $5.7 million of unamortized discounts for the unsecured senior notes and $1.2 million of unamortized premiums for the secured debt.

Capitalized Interest and Loan Fees

The following table sets forth gross interest expense, including debt discount/premium and deferred financing cost amortization, net of capitalized interest, for the three and nine months ended September 30, 2018 and 2017. The interest expense capitalized was recorded as a cost of development and increased the carrying value of undeveloped land and construction in progress.

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
	(in thousands)
Gross interest expense	$	30,231		$	28,331		$	85,834		$	84,577
Capitalized interest and deferred financing costs	(19,156		)	(12,180		)	(48,549		)	(33,101		)
Interest expense	$	11,075		$	16,151		$	37,285		$	51,476

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Stockholders' Equity of the Company

9 Months Ended

Sep. 30, 2018

Equity [Abstract]

Stockholders' Equity of the Company

Stockholders’ Equity of the Company

Forward Equity Offering

On August 8, 2018, the Company entered into forward equity sale agreements with certain financial institutions acting as forward purchasers in connection with an offering of5,000,000 common shares at an initial gross offering price of $360.5 million, or $72.10 per share, before underwriting discounts, commissions and offering expenses. The forward purchasers borrowed and sold an aggregate of 5,000,000 shares in the offering. The Company did not receive any proceeds from the sale of its common shares by the forward purchasers in the offering. The Company currently expects to fully physically settle the forward sale agreements and receive cash proceeds upon one or more settlement dates, at the Company’s discretion, prior to the final settlement date under the forward sale agreements of August 1, 2019. The forward sale price that we expect to receive upon physical settlement of the agreements will be subject to adjustment for (i) the forward purchasers’ stock borrowing costs and (ii) scheduled dividends during the term of the agreements. The full amount of this offering remains available for future settlement as of the date of this filing. Upon issuance of shares, the Company will contribute the net proceeds from these issuances to the Operating Partnership in exchange for an equal number of units in the Operating Partnership.

At-The-Market Stock Offering Program

In May 2018, the Company completed its then existing at-the-market stock offering program, under which we sold an aggregate of $300.0 million in gross sales of shares. In June 2018, the Company commenced a new at-the-market stock offering program (the “2018 At-The-Market Program”), under which we may currently offer and sell shares of our common stock with an aggregate gross sales price of up to $500.0 million. In connection with the 2018 At-The-Market-Program, the Company also entered into related forward purchase agreements whereby, at our discretion, we may sell shares of our common stock under the 2018 At-The-Market-Program under forward equity sale agreements. The use of a forward equity sale agreement would allow the Company to lock in a share price on the sale of shares of our common stock at the time the agreement is executed, but defer receiving the proceeds from the sale of shares until a later date. This also allows us to defer the potential dilutive impact of such offering of shares until such time as we settle the forward equity sale agreements.

Since commencement of our 2018 At-The-Market Program in June 2018, we have sold447,466shares of common stock through September 30, 2018, none of which were sold under forward equity sale agreements. Approximately$466.2 million remains available to be sold under this program.

The following table sets forth information regarding sales of common stock under our at-the-market offering programs for the nine months ended September 30, 2018:

	Nine Months Ended September 30, 2018
	(in millions, except share and per share data)
Shares of common stock sold during the period	1,817,195
Weighted average price per common share	$	73.64
Aggregate gross proceeds	$	133.8
Aggregate net proceeds after selling commissions	$	132.1

The proceeds from sales were used to fund acquisitions, development expenditures and general corporate purposes. Actual future sales will depend upon a variety of factors, including but not limited to, market conditions, the trading price of the Company’s common stock and our capital needs. We have no obligation to sell the remaining shares available for sale under this program.

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Noncontrolling Interests on the Company's Consolidated Financial Statements

9 Months Ended

Sep. 30, 2018

Noncontrolling Interest [Abstract]

Noncontrolling Interests on the Company's Consolidated Financial Statements

Noncontrolling Interests on the Company’s Consolidated Financial Statements

Common Units of the Operating Partnership

The Company owned an approximate 98.0%, 97.9%, and 97.9% common general partnership interest in the Operating Partnership as of September 30, 2018, December 31, 2017 and September 30, 2017, respectively. The remaining approximate 2.0%, 2.1%, and 2.1% common limited partnership interest as of September 30, 2018, December 31, 2017 and September 30, 2017, respectively, was owned by non-affiliated investors and certain of our executive officers and directors in the form of noncontrolling common units. There were 2,025,287, 2,077,193 and 2,077,193common units outstanding held by these investors, executive officers and directors as of September 30, 2018, December 31, 2017 and September 30, 2017, respectively.

The noncontrolling common units may be redeemed by unitholders for cash. Except under certain circumstances, we, at our option, may satisfy the cash redemption obligation with shares of the Company’s common stock on a one-for-one basis. If satisfied in cash, the value for each noncontrolling common unit upon redemption is the amount equal to the average of the closing quoted price per share of the Company’s common stock, par value $.01 per share, as reported on the NYSE for the ten trading days immediately preceding the applicable redemption date. The aggregate value upon redemption of the then-outstanding noncontrolling common units was $143.4 millionand $154.5 million as of September 30, 2018 and December 31, 2017, respectively. This redemption value does not necessarily represent the amount that would be distributed with respect to each noncontrolling common unit in the event of our termination or liquidation. In the event of our termination or liquidation, it is expected in most cases that each common unit would be entitled to a liquidating distribution equal to the liquidating distribution payable in respect of each share of the Company’s common stock.

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Partners' Capital of the Operating Partnership

9 Months Ended

Sep. 30, 2018

Partners' Capital Notes [Abstract]

Partners’ Capital of the Operating Partnership

Partners’ Capital of the Operating Partnership

At-The-Market Stock Offering Program

During the nine months ended September 30, 2018, the Company utilized its at-the-market stock offering programs to issue shares of common stock (see Note 6 “Stockholders’ Equity of the Company” for additional information). The net offering proceeds were contributed by the Company to the Operating Partnership in exchange for common units for the nine months ended September 30, 2018 as follows:

	Nine Months Ended September 30, 2018
	(in millions, except share data)
Shares of common stock contributed by the Company	1,817,195
Common units exchanged for share of common stock by the Company	1,817,195
Aggregate gross proceeds	$	133.8
Aggregate net proceeds after selling commissions	$	132.1

Common Units Outstanding

The following table sets forth the number of common units held by the Company and the number of common units held by non-affiliated investors and certain of our executive officers and directors in the form of noncontrolling common units as well as the ownership interest held on each respective date:

	September 30, 2018		December 31, 2017		September 30, 2017
Company owned common units in the Operating Partnership	100,746,988		98,620,333		98,382,256
Company owned general partnership interest	98.0	%	97.9	%	97.9	%
Noncontrolling common units of the Operating Partnership	2,025,287		2,077,193		2,077,193
Ownership interest of noncontrolling interest	2.0	%	2.1	%	2.1	%

For further discussion of the noncontrolling common units as of September 30, 2018 and December 31, 2017, refer to Note 7.

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Share-Based Compensation

9 Months Ended

Sep. 30, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Share-Based Compensation

Share-Based Compensation

Stockholder Approved Equity Compensation Plans

As of September 30, 2018, we maintained one share-based incentive compensation plan, the Kilroy Realty 2006 Incentive Award Plan, as amended (the “2006 Plan”). As of September 30, 2018, approximately 1.8 million shares were available for grant under the 2006 Plan. The calculation of shares available for grant is presented after taking into account a reserve for a sufficient number of shares to cover the vesting and payment of 2006 Plan awards that were outstanding on that date, including performance-based vesting awards at (i) levels actually achieved for the performance or market conditions (as defined below) for which the performance period has been completed and (ii) at target levels for the performance or market conditions (as defined below) for awards still in a performance period.

2018 Share-Based Compensation Grants

In January and February 2018, the Executive Compensation Committee of the Company’s Board of Directors awarded 282,038 restricted stock units (“RSUs”) to certain officers of the Company under the 2006 Plan, which included 158,205 RSUs (at the target level of performance) that are subject to market and/or performance-based vesting requirements (the “2018 Performance-Based RSUs”) and 123,833 RSUs that are subject to time-based vesting requirements (the “2018 Time-Based RSUs”).

2018 Performance-Based RSU Grant

The 2018 Performance-Based RSUs are scheduled to vest at the end of a three-year period (consisting of calendar years 2018-2020). A target number of 2018 Performance-Based RSUs were awarded, and the final number of 2018 Performance-Based RSUs that vest (which may be more or less than the target number) will be based upon (1) the achievement of pre-set FFO per share goals for the year ending December 31, 2018 that applies to 100% of the Performance-Based RSUs awarded (the “FFO performance condition”) and (2) a performance measure that applies to 50% of the award based upon a measure of the Company’s average debt to EBITDA ratio for the three-year performance period (the “debt to EBITDA ratio performance condition”) and a market measure that applies to the other 50% of the award based upon the relative ranking of the Company’s total stockholder return for the three-year performance period compared to the total stockholder returns of an established comparison group of companies over the same period (the “market condition”). The 2018 Performance-Based RSUs are also subject to a three-year service vesting provision and are scheduled to cliff vest on the date the final vesting percentage is determined following the end of the three-year performance period under the awards. The number of 2018 Performance-Based RSUs ultimately earned could fluctuate from the target number of 2018 Performance-Based RSUs granted based upon the levels of achievement for the FFO performance condition, the debt to EBITDA ratio performance condition, the market condition, and the extent to which the service vesting condition is satisfied. The estimate of the number of 2018 Performance-Based RSUs earned is evaluated quarterly during the performance period based on our estimate for each of the performance conditions measured against the applicable goals. As of September 30, 2018, the number of 2018 Performance-Based RSUs estimated to be earned based on the Company’s estimate of the performance conditions measured against the applicable goals was 180,931, and the compensation cost recorded to date for this program was based on that estimate. Compensation expense for the 2018 Performance-Based RSU grant is recognized on a straight-line basis over the requisite service period for each participant, which is generally the three-year service period.

Each 2018 Performance-Based RSU represents the right, subject to the applicable vesting conditions, to receive one share of our common stock in the future. The determination of the grant date fair value of the portion of the 2018 Performance-Based RSU grants covered by the debt to EBITDA ratio performance condition was based on the $66.46 share price on the grant date. The determination of the grant date fair value of the portion of the 2018 Performance-Based RSU grants covered by the market condition was calculated using a Monte Carlo simulation pricing model based on the assumptions in the table below, which resulted in a $70.08 grant date fair value per share.

	Fair Value Assumptions
Expected share price volatility	20.00%
Risk-free interest rate	2.37%
Expected life	2.9 years

The computation of expected volatility is based on a blend of the historical volatility of our shares of common stock over approximately 5.8 years, as that is expected to be most consistent with future volatility and equates to a time period twice as long as the approximate 2.9-year performance period of the RSUs, and implied volatility data based on the observed pricing of six month publicly-traded options on our shares of common stock. The risk-free interest rate is based on the yield curve on zero-coupon U.S. Treasury STRIP securities in effect at February 14, 2018. The expected life of the 2018 Performance-Based RSUs is equal to the remaining 2.9-year vesting period as of February 14, 2018.

The total grant date fair value of the 2018 Performance-Based RSU awards was $10.8 million on the February 14, 2018 grant date of the awards. For the nine months ended September 30, 2018, we recorded compensation expense based upon the grant date fair value per share for each component multiplied by the estimated number of RSUs to be earned as discussed above.

2018 Time-Based RSU Grant

The 2018 Time-Based RSUs are scheduled to vest in three equal annual installments beginning on January 5, 2019 through January 5, 2021. Compensation expense for the 2018 Time-Based RSUs is recognized on a straight-line basis over the requisite service period for each participant, which is generally the three-year service vesting period. Each 2018 Time-Based RSU represents the right to receive one share of our common stock in the future. The total grant date fair value of the 2018 Time-Based RSU awards was $8.4 million, which was based on the $70.37 and $66.46 closing share prices of the Company’s common stock on the NYSE on the January 29, 2018 and February 14, 2018, respectively, grant dates of the awards.

Share-Based Compensation Cost Recorded During the Period

The total compensation cost for all share-based compensation programs was $8.1 million and $6.4 million for the three months ended September 30, 2018 and 2017, respectively, and $24.7 million and $19.0 million for the nine months ended September 30, 2018 and 2017, respectively. Of the total share-based compensation costs, $1.5 million and $1.7 million was capitalized as part of real estate assets and deferred leasing costs for the three months ended September 30, 2018 and 2017, respectively, and $5.8 million and $5.4 million for the nine months ended September 30, 2018 and 2017, respectively. As of September 30, 2018, there was approximately $24.3 million of total unrecognized compensation cost related to nonvested incentive awards granted under share-based compensation arrangements that is expected to be recognized over a weighted-average period of 1.8 years. The remaining compensation cost related to these nonvested incentive awards had been recognized in periods prior to September 30, 2018.

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Commitments and Contingencies

9 Months Ended

Sep. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

General

As of September 30, 2018, we had commitments of approximately $776.5 million, excluding our ground lease commitments, for contracts and executed leases directly related to our operating properties and development projects.

Environmental Matters

We follow the policy of monitoring all of our properties, both acquisition and existing stabilized portfolio properties, for the presence of hazardous or toxic substances. While there can be no assurance that a material environmental liability does not exist, we are not currently aware of any environmental liability with respect to our stabilized portfolio properties that would have a material adverse effect on our financial condition, results of operations and cash flow, or that we believe would require additional disclosure or the recording of a loss contingency.

As of September 30, 2018, we had accrued environmental remediation liabilities of approximately $79.6 millionrecorded on our consolidated balance sheets in connection with certain of our in-process and future development projects. The accrued environmental remediation liabilities represent the remaining costs we estimate we will incur when we commence development at various development acquisition sites. These estimates, which we developed with the assistance of third party experts, consist primarily of the removal of contaminated soil and other related costs since we are required to dispose of any existing contaminated soil when we develop new properties at these sites.

We record estimated environmental remediation obligations for acquired properties at the acquisition date when we are aware of such costs and when such costs are probable of being incurred and can be reasonably estimated. Estimated costs related to development environmental remediation liabilities are recorded as an increase to the cost of the development project. Actual costs are recorded as a decrease to the liability when incurred. These accruals are adjusted as an increase or decrease to the development project costs and as an increase or decrease to the accrued environmental remediation liability if we obtain further information or circumstances change. The environmental remediation obligation recorded at September 30, 2018 was not discounted to its present value since we expect to complete the remediation activities in the next one to five years in connection with development activities at the various sites. It is possible that we could incur additional environmental remediation costs in connection with these future development projects.  However, given we are in the pre-development phase on these future development projects, potential additional environmental costs cannot be reasonably estimated at this time and certain changes in estimates could occur as the site conditions, final project timing, design elements, actual soil conditions and other aspects of the projects, which may depend upon municipal and other approvals beyond the control of the Company, are determined.

Other than the accrued environmental liabilities discussed above, we are not aware of any unasserted claims and assessments with respect to an environmental liability that we believe would require additional disclosure or the recording of an additional loss contingency.

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Fair Value Measurements and Disclosures

9 Months Ended

Sep. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurements and Disclosures

Fair Value Measurements and Disclosures

Assets and Liabilities Reported at Fair Value

The only assets we record at fair value on our consolidated financial statements are the marketable securities related to our Deferred Compensation Plan. The following table sets forth the fair value of our marketable securities as of September 30, 2018 and December 31, 2017:

	Fair Value (Level 1) (1)
	September 30, 2018		December 31, 2017
Description	(in thousands)
Marketable securities (2)	$	23,353	$	20,674

________________________

(1) Based on quoted prices in active markets for identical securities.

(2) The marketable securities are held in a limited rabbi trust.

We report the change in the fair value of the marketable securities at the end of each accounting period in interest income and other net investment gain/loss in the consolidated statements of operations. We also adjust the related Deferred Compensation Plan liability to fair value at the end of each accounting period based on the performance of the benchmark funds selected by each participant, which results in a corresponding increase or decrease to compensation cost for the period.

The following table sets forth the net gain on marketable securities recorded during the three and nine months ended September 30, 2018 and 2017:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Description	(in thousands)				(in thousands)
Net gain on marketable securities	$	271	$	536	$	289	$	1,719

Financial Instruments Disclosed at Fair Value

The following table sets forth the carrying value and the fair value of our other financial instruments as of September 30, 2018 and December 31, 2017:

	September 30, 2018				December 31, 2017
	Carrying Value		Fair Value (1)		Carrying Value		Fair Value (1)
	(in thousands)
Liabilities
Secured debt, net	$	336,866	$	331,313	$	340,800	$	346,858
Unsecured debt, net	2,207,049		2,173,366		2,006,263		2,077,199
Unsecured line of credit	330,000		330,221		—		—

________________________

(1) Fair value calculated using Level II inputs, which are based on model-derived valuations in which significant inputs and significant value drivers are observable in active markets.

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Other Significant Events

9 Months Ended

Sep. 30, 2018

Receivables [Abstract]

Other Significant Events

Receivables

Current Receivables, net

Current receivables, net consisted of the following as of September 30, 2018 and December 31, 2017:

	September 30, 2018			December 31, 2017
	(in thousands)
Current receivables	$	21,674		$	19,235
Allowance for uncollectible tenant receivables	(4,155		)	(2,309		)
Current receivables, net	$	17,519		$	16,926

Deferred Rent Receivables, net

Deferred rent receivables, net consisted of the following as of September 30, 2018 and December 31, 2017:

	September 30, 2018			December 31, 2017
	(in thousands)
Deferred rent receivables	$	265,858		$	249,629
Allowance for deferred rent receivables	(4,855		)	(3,238		)
Deferred rent receivables, net	$	261,003		$	246,391

Other Significant Events

During the nine months ended September 30, 2018, we recognized $6.7 million of provision for bad debts. The provision for bad debts is primarily due to a $7.0 million increase in the provision for one tenant recognized during the second quarter of 2018.

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Net Income Available to Common Stockholders Per Share of the Company

9 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Net Income Available to Common Stockholders Per Share of the Company

Net Income Available to Common Stockholders Per Share of the Company

The following table reconciles the numerator and denominator in computing the Company’s basic and diluted per-share computations for net income available to common stockholders for the three and nine months ended September 30, 2018 and 2017:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
	(in thousands, except share and per share amounts)
Numerator:
Net income attributable to Kilroy Realty Corporation	$	34,400		$	71,110		$	98,195		$	136,083
Total preferred dividends	—			(4,552		)	—			(13,363		)
Allocation to participating securities (1)	(507		)	(501		)	(1,492		)	(1,460		)
Numerator for basic and diluted net income available to common stockholders	$	33,893		$	66,057		$	96,703		$	121,260
Denominator:
Basic weighted average vested shares outstanding	100,676,778			98,352,139			99,711,312			98,008,780
Effect of dilutive securities	551,556			559,473			497,333			582,268
Diluted weighted average vested shares and common share equivalents outstanding	101,228,334			98,911,612			100,208,645			98,591,048
Basic earnings per share:
Net income available to common stockholders per share	$	0.34		$	0.67		$	0.97		$	1.24
Diluted earnings per share:
Net income available to common stockholders per share	$	0.33		$	0.67		$	0.97		$	1.23

________________________

(1) Participating securities include nonvested shares, certain time-based RSUs and vested market measure-based RSUs.

Share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are considered participating securities. The impact of potentially dilutive common shares, including stock options, RSUs, shares issuable under forward equity sale agreements and other securities are considered in our diluted earnings per share calculation for the three and nine months ended September 30, 2018 and 2017. Certain market measure-based RSUs are not included in dilutive securities for the three and nine months ended September 30, 2018 and 2017, as not all performance metrics had been met by the end of the applicable reporting periods.

See Note 9 “Share-Based Compensation” for additional information regarding share-based compensation.

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Net Income Available to Common Unitholders Per Unit of the Operating Partnership

9 Months Ended

Sep. 30, 2018

Net Income Available To Common Unitholders [Line Items]

Net Income Available to Common Unitholders Per Unit of the Operating Partnership

Net Income Available to Common Stockholders Per Share of the Company

The following table reconciles the numerator and denominator in computing the Company’s basic and diluted per-share computations for net income available to common stockholders for the three and nine months ended September 30, 2018 and 2017:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
	(in thousands, except share and per share amounts)
Numerator:
Net income attributable to Kilroy Realty Corporation	$	34,400		$	71,110		$	98,195		$	136,083
Total preferred dividends	—			(4,552		)	—			(13,363		)
Allocation to participating securities (1)	(507		)	(501		)	(1,492		)	(1,460		)
Numerator for basic and diluted net income available to common stockholders	$	33,893		$	66,057		$	96,703		$	121,260
Denominator:
Basic weighted average vested shares outstanding	100,676,778			98,352,139			99,711,312			98,008,780
Effect of dilutive securities	551,556			559,473			497,333			582,268
Diluted weighted average vested shares and common share equivalents outstanding	101,228,334			98,911,612			100,208,645			98,591,048
Basic earnings per share:
Net income available to common stockholders per share	$	0.34		$	0.67		$	0.97		$	1.24
Diluted earnings per share:
Net income available to common stockholders per share	$	0.33		$	0.67		$	0.97		$	1.23

________________________

(1) Participating securities include nonvested shares, certain time-based RSUs and vested market measure-based RSUs.

Share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are considered participating securities. The impact of potentially dilutive common shares, including stock options, RSUs, shares issuable under forward equity sale agreements and other securities are considered in our diluted earnings per share calculation for the three and nine months ended September 30, 2018 and 2017. Certain market measure-based RSUs are not included in dilutive securities for the three and nine months ended September 30, 2018 and 2017, as not all performance metrics had been met by the end of the applicable reporting periods.

See Note 9 “Share-Based Compensation” for additional information regarding share-based compensation.

Kilroy Realty L.P. [Member]

Net Income Available To Common Unitholders [Line Items]

Net Income Available to Common Unitholders Per Unit of the Operating Partnership

Net Income Available to Common Unitholders Per Unit of the Operating Partnership

The following table reconciles the numerator and denominator in computing the Operating Partnership’s basic and diluted per-unit computations for net income available to common unitholders for the three and nine months ended September 30, 2018 and 2017:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
	(in thousands, except unit and per unit amounts)
Numerator:
Net income attributable to Kilroy Realty, L.P.	$	34,993		$	72,402		$	99,901		$	138,427
Total preferred distributions	—			(4,552		)	—			(13,363		)
Allocation to participating securities (1)	(507		)	(501		)	(1,492		)	(1,460		)
Numerator for basic and diluted net income available to common unitholders	$	34,486		$	67,349		$	98,409		$	123,604
Denominator:
Basic weighted average vested units outstanding	102,721,806			100,429,332			101,773,540			100,160,595
Effect of dilutive securities	551,556			559,473			497,333			582,268
Diluted weighted average vested units and common unit equivalents outstanding	103,273,362			100,988,805			102,270,873			100,742,863
Basic earnings per unit:
Net income available to common unitholders per unit	$	0.34		$	0.67		$	0.97		$	1.23
Diluted earnings per unit:
Net income available to common unitholders per unit	$	0.33		$	0.67		$	0.96		$	1.23

________________________

(1) Participating securities include nonvested shares, certain time-based RSUs and vested market measure-based RSUs.

Share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are considered participating securities. The impact of potentially dilutive common units, including stock options, RSUs, shares issuable under forward equity sale agreements and other securities are considered in our diluted earnings per share calculation for the three and nine months ended September 30, 2018 and 2017. Certain market measure-based RSUs are not included in dilutive securities for the three and nine months ended September 30, 2018 and 2017, as not all performance metrics had been met by the end of the applicable reporting periods.

See Note 9 “Share-Based Compensation” for additional information regarding share-based compensation.

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Supplemental Cash Flow Information of the Company

9 Months Ended

Sep. 30, 2018

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information of the Company

Supplemental Cash Flow Information of the Company

Supplemental cash flow information is included as follows (in thousands):

	Nine Months Ended September 30,
	2018		2017
SUPPLEMENTAL CASH FLOWS INFORMATION:
Cash paid for interest, net of capitalized interest of $46,761 and $31,880 as of September 30, 2018 and 2017, respectively	$	32,175	$	46,878
NON-CASH INVESTING TRANSACTIONS:
Accrual for expenditures for operating properties and development properties	$	142,133	$	104,409
Assumption of accrued liabilities in connection with acquisitions (Note 2)	$	40,624	$	—
Tenant improvements funded directly by tenants	$	7,211	$	10,361
NON-CASH FINANCING TRANSACTIONS:
Accrual of dividends and distributions payable to common stockholders and common unitholders	$	47,411	$	43,324
Exchange of common units of the Operating Partnership into shares of the Company’s common stock	$	1,962	$	10,939

The following is a reconciliation of our cash and cash equivalents and restricted cash at the beginning and end of the nine months ended September 30, 2018 and 2017.

	Nine Months Ended September 30,
	2018		2017
RECONCILIATION OF CASH AND CASH EQUIVALENTS AND RESTRICTED CASH:
Cash and cash equivalents at beginning of period	$	57,649	$	193,418
Restricted cash at beginning of period	9,149		56,711
Cash and cash equivalents and restricted cash at beginning of period	$	66,798	$	250,129
Cash and cash equivalents at end of period	$	86,517	$	64,954
Restricted cash at end of period	—		179,276
Cash and cash equivalents and restricted cash at end of period	$	86,517	$	244,230

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Supplemental Cash Flow Information of the Operating Partnership

9 Months Ended

Sep. 30, 2018

Other Significant Noncash Transactions [Line Items]

Supplemental Cash Flow Information of the Operating Partnership

Supplemental Cash Flow Information of the Company

Supplemental cash flow information is included as follows (in thousands):

	Nine Months Ended September 30,
	2018		2017
SUPPLEMENTAL CASH FLOWS INFORMATION:
Cash paid for interest, net of capitalized interest of $46,761 and $31,880 as of September 30, 2018 and 2017, respectively	$	32,175	$	46,878
NON-CASH INVESTING TRANSACTIONS:
Accrual for expenditures for operating properties and development properties	$	142,133	$	104,409
Assumption of accrued liabilities in connection with acquisitions (Note 2)	$	40,624	$	—
Tenant improvements funded directly by tenants	$	7,211	$	10,361
NON-CASH FINANCING TRANSACTIONS:
Accrual of dividends and distributions payable to common stockholders and common unitholders	$	47,411	$	43,324
Exchange of common units of the Operating Partnership into shares of the Company’s common stock	$	1,962	$	10,939

The following is a reconciliation of our cash and cash equivalents and restricted cash at the beginning and end of the nine months ended September 30, 2018 and 2017.

	Nine Months Ended September 30,
	2018		2017
RECONCILIATION OF CASH AND CASH EQUIVALENTS AND RESTRICTED CASH:
Cash and cash equivalents at beginning of period	$	57,649	$	193,418
Restricted cash at beginning of period	9,149		56,711
Cash and cash equivalents and restricted cash at beginning of period	$	66,798	$	250,129
Cash and cash equivalents at end of period	$	86,517	$	64,954
Restricted cash at end of period	—		179,276
Cash and cash equivalents and restricted cash at end of period	$	86,517	$	244,230

Kilroy Realty L.P. [Member]

Other Significant Noncash Transactions [Line Items]

Supplemental Cash Flow Information of the Operating Partnership

Supplemental Cash Flow Information of the Operating Partnership:

Supplemental cash flow information is included as follows (in thousands):

	Nine Months Ended September 30,
	2018		2017
SUPPLEMENTAL CASH FLOWS INFORMATION:
Cash paid for interest, net of capitalized interest of $46,761 and $31,880 as of September 30, 2018 and 2017, respectively	$	32,175	$	46,878
NON-CASH INVESTING TRANSACTIONS:
Accrual for expenditures for operating properties and development properties	$	142,133	$	104,409
Assumption of accrued liabilities in connection with acquisitions (Note 2)	$	40,624	$	—
Tenant improvements funded directly by tenants	$	7,211	$	10,361
NON-CASH FINANCING TRANSACTIONS:
Accrual of distributions payable to common unitholders	$	47,411	$	43,324

The following is a reconciliation of our cash and cash equivalents and restricted cash at the beginning and end of the nine months ended September 30, 2018 and 2017.

	Nine Months Ended September 30,
	2018		2017
RECONCILIATION OF CASH AND CASH EQUIVALENTS AND RESTRICTED CASH:
Cash and cash equivalents at beginning of period	$	57,649	$	193,418
Restricted cash at beginning of period	9,149		56,711
Cash and cash equivalents and restricted cash at beginning of period	$	66,798	$	250,129
Cash and cash equivalents at end of period	$	86,517	$	64,954
Restricted cash at end of period	—		179,276
Cash and cash equivalents and restricted cash at end of period	$	86,517	$	244,230

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Subsequent Events

9 Months Ended

Sep. 30, 2018

Subsequent Events [Abstract]

Subsequent Events

Subsequent Events

On October 17, 2018, aggregate dividends, distributions and dividend equivalents of $47.4 millionwere paid to common stockholders, common unitholders and RSU holders of record on September 28, 2018.

On October 22, 2018, the Operating Partnership issued $200.0 million principal amount of its 4.35% Senior Notes, Series B, due October 18, 2026 pursuant to the Note Purchase Agreement, the proceeds of which were used to repay a portion of the outstanding balance on our unsecured revolving credit facility. As of the date of this report, the outstanding balance on our unsecured revolving credit facility was approximately $165.0 million.

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Organization, Ownership and Basis of Presentation (Policies)

9 Months Ended

Sep. 30, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Consolidation policy

The consolidated financial statements of the Company include the consolidated financial position and results of operations of the Company, the Operating Partnership, the Finance Partnership, 303 Second LLC, 100 First LLC, Redwood LLC and all of our wholly-owned and controlled subsidiaries. The consolidated financial statements of the Operating Partnership include the consolidated financial position and results of operations of the Operating Partnership, the Finance Partnership, 303 Second LLC, 100 First LLC, Redwood LLC and all of our wholly-owned and controlled subsidiaries. All intercompany balances and transactions have been eliminated in the consolidated financial statements.

Basis of accounting

The accompanying interim financial statements have been prepared by management in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and in conjunction with the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures required for annual financial statements have been condensed or excluded pursuant to SEC rules and regulations. Accordingly, the interim financial statements do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, the accompanying interim financial statements reflect all adjustments of a normal and recurring nature that are considered necessary for a fair presentation of the results for the interim periods presented. However, the results of operations for the interim periods are not necessarily indicative of the results that may be expected for the year ending December 31, 2018. The interim financial statements for the Company and the Operating Partnership should be read in conjunction with the audited consolidated financial statements and notes thereto included in our annual report on Form 10-K for the year ended December 31, 2017.

Revenue

Effective January 1, 2018, we adopted Financial Accounting Standards Board (“FASB”) ASU No. 2014-09 “Revenue From Contracts with Customers (Topic 606)” (“ASU 2014-09”) and the related FASB ASU Nos. 2016-12 and 2016-20, which provide practical expedients, technical corrections, and improvements for certain aspects of ASU 2014-09, on a modified retrospective basis. ASU 2014-09 establishes a single comprehensive model for entities to use in accounting for revenue from contracts with customers and supersedes most of the existing revenue recognition guidance.

We evaluated each of the Company’s revenue streams to determine the sources of revenue that are impacted by ASU 2014-09 and concluded that two revenue streams, sales of real estate and revenue from our multi-tenant parking arrangements, fall within the scope of Topic 606. We evaluated the impact of the adoption of the guidance on the timing of gain recognition for our historical dispositions and concluded there was no significant impact to our consolidated financial statements given the straight forward nature of our historical disposition transactions. We also evaluated the impact of the guidance on the timing and pattern of revenue recognition for our multi-tenant parking arrangements and determined there was no significant impact to our consolidated financial statements. We generally provide parking for our multi-tenant properties based on the prevailing market rate per parking space, which adjusts based on prevailing market rates during the tenant’s occupancy, and we recognize parking revenue as parking spaces are utilized by the tenant. Given the structure of these arrangements whereby the amount of parking revenue we recognize corresponds directly to the tenant’s use, we were able to apply the practical expedient provided in Accounting Standards Codification (“ASC”) 606-10-50-14(b) (the “right to invoice” practical expedient). As a result of applying this practical expedient, we are not required to disclose the transaction price allocated to future performance obligations for multi-tenant parking since we cannot predict or estimate the use of such parking spaces. During the three months ended September 30, 2018 and 2017, we recognized $6.7 million and $6.6 million, respectively, of parking revenue for arrangements that are within the scope of Topic 606, which is included in rental revenues on our consolidated statements of operations. During the nine months ended September 30, 2018 and 2017, we recognized$20.2 millionand $20.3 million, respectively, of parking revenue for arrangements that are within the scope of Topic 606, which is included in rental revenues on our consolidated statements of operations. We concluded that the adoption of Topic 606 did not have a material impact on our consolidated financial statements or a material impact on the notes to our consolidated financial statements.

New accounting pronouncements

Accounting Pronouncements Adopted January 1, 2018

Effective January 1, 2018, we adopted Financial Accounting Standards Board (“FASB”) ASU No. 2014-09 “Revenue From Contracts with Customers (Topic 606)” (“ASU 2014-09”) and the related FASB ASU Nos. 2016-12 and 2016-20, which provide practical expedients, technical corrections, and improvements for certain aspects of ASU 2014-09, on a modified retrospective basis. ASU 2014-09 establishes a single comprehensive model for entities to use in accounting for revenue from contracts with customers and supersedes most of the existing revenue recognition guidance.

We evaluated each of the Company’s revenue streams to determine the sources of revenue that are impacted by ASU 2014-09 and concluded that two revenue streams, sales of real estate and revenue from our multi-tenant parking arrangements, fall within the scope of Topic 606. We evaluated the impact of the adoption of the guidance on the timing of gain recognition for our historical dispositions and concluded there was no significant impact to our consolidated financial statements given the straight forward nature of our historical disposition transactions. We also evaluated the impact of the guidance on the timing and pattern of revenue recognition for our multi-tenant parking arrangements and determined there was no significant impact to our consolidated financial statements. We generally provide parking for our multi-tenant properties based on the prevailing market rate per parking space, which adjusts based on prevailing market rates during the tenant’s occupancy, and we recognize parking revenue as parking spaces are utilized by the tenant. Given the structure of these arrangements whereby the amount of parking revenue we recognize corresponds directly to the tenant’s use, we were able to apply the practical expedient provided in Accounting Standards Codification (“ASC”) 606-10-50-14(b) (the “right to invoice” practical expedient). As a result of applying this practical expedient, we are not required to disclose the transaction price allocated to future performance obligations for multi-tenant parking since we cannot predict or estimate the use of such parking spaces. During the three months ended September 30, 2018 and 2017, we recognized $6.7 million and $6.6 million, respectively, of parking revenue for arrangements that are within the scope of Topic 606, which is included in rental revenues on our consolidated statements of operations. During the nine months ended September 30, 2018 and 2017, we recognized$20.2 millionand $20.3 million, respectively, of parking revenue for arrangements that are within the scope of Topic 606, which is included in rental revenues on our consolidated statements of operations. We concluded that the adoption of Topic 606 did not have a material impact on our consolidated financial statements or a material impact on the notes to our consolidated financial statements.

Effective January 1, 2018, we adopted FASB ASU No. 2017-09 “Compensation - Stock Compensation (Topic 718)” on a prospective basis. Under the guidance, an entity will not apply modification accounting to a share-based payment award if the award’s fair value, vesting conditions, and classification as an equity or liability instrument remain the same immediately before and after the change. The adoption of this guidance did not have an impact on our consolidated financial statements or notes to our consolidated financial statements.

Effective January 1, 2018, we adopted FASB ASU No. 2017-05 “Other Income - Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20)” (“ASU 2017-05”) on a retrospective basis. This standard clarifies the scope of the original guidance within Subtopic 610-20 “Gains and Losses from the Derecognition of Nonfinancial Assets” that was issued in connection with ASU 2014-09 which provided guidance for recognizing gains and losses from the transfer of nonfinancial assets in transactions with noncustomers. Additionally, ASU 2017-05 adds guidance pertaining to the partial sales of real estate and clarifies that nonfinancial assets within the scope of ASC 610-20 may include nonfinancial assets transferred within a legal entity to a counterparty. For example, a parent may transfer control of nonfinancial assets by transferring ownership interests in a consolidated subsidiary. We evaluated the impact of the new amendments on our historical transactions and concluded that there was no impact. As such, the adoption of this guidance did not have an impact on our consolidated financial statements or notes to our consolidated financial statements.

Effective January 1, 2018, we adopted FASB ASU No. 2016-15 (“ASU 2016-15”) which provides guidance where there is diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows, on a retrospective basis. The adoption of this guidance did not have an impact on our consolidated financial statements or notes to our consolidated financial statements.

Effective January 1, 2018, we adopted FASB ASU No. 2016-01 (“ASU 2016-01”) which amends the accounting guidance on the classification and measurement of financial instruments and FASB ASU No. 2018-03 (“ASU 2018-03”) which provides technical corrections and improvements to ASU 2016-01, on a modified retrospective basis. The amendments require that all investments in equity securities, including other ownership interests, are reported at fair value with changes in fair value reported in net income. This requirement does not apply to investments that qualify for equity method accounting or to those that result in consolidation of the investee or for which the entity has elected the predictability exception to fair value measurement. Additionally, the amendments require that the portion of the total fair value change caused by a change in instrument-specific credit risk for financial liabilities for which the fair value option has been elected would be recognized in other comprehensive income. Any accumulated amount remaining in other comprehensive income is reclassified to earnings when the liability is extinguished. The adoption of this guidance did not have an impact on our consolidated financial statements or notes to our consolidated financial statements since our only financial instruments within the scope of ASU 2016-01 and 2018-03 are the marketable securities related to our deferred compensation plan which are classified as trading securities and marked to market at fair value through earnings each reporting period.

Accounting Pronouncements Effective January 1, 2019

ASU No. 2016-02 “Leases (Topic 842)”

On February 25, 2016, the FASB issued ASU No. 2016-02 “Leases (Topic 842)” (“ASU 2016-02”) to amend the accounting guidance for leases. The accounting applied by a lessor is largely unchanged under ASU 2016-02. However, the standard requires lessees to recognize lease assets and lease liabilities for leases classified as operating leases on the balance sheet. Lessees will recognize in the statement of financial position a liability to make lease payments and a right-of-use asset representing its right to use the underlying asset for the lease term. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and lease liabilities. If a lessee makes this election, it will recognize lease expense for such leases generally on a straight-line basis over the lease term. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018. Early adoption is permitted.

In July 2018, the FASB issued ASU No. 2018-11 which (1) simplifies transition requirements for both lessees and lessors by adding an option that permits an organization to apply the transition provisions of the new standard at its adoption date instead of at the earliest comparative period presented in its financial statements and (2) provides a practical expedient for lessors that permits lessors to make an accounting policy election to not separate nonlease components from the associated lease components, if the following two criteria are met: (1) the timing and pattern of transfer of the lease and nonlease components are the same and (2) the lease component would be classified as an operating lease if accounted for separately. For leases where we are the lessor, we plan to elect the optional transition relief and apply the practical expedients provided by ASU 2018-11. As a result, leases where we are the lessor will be accounted for in a similar method to existing standards with the underlying leased asset being reported and recognized as a real estate asset.

In August 2018, the FASB released an exposure draft to amend ASU 2016-02 that clarifies lessor treatment of sales taxes and other similar taxes collected from lessees, lessor costs paid directly by lessees and recognition of variable payments for contracts with lease and nonlease components. If the amendments are codified as currently drafted, we do not expect the amendments to have an impact on our consolidated financial statements.

ASU 2016-02 also specifies that upon adoption, lessors will no longer be able to capitalize and amortize certain leasing related costs and instead will only be permitted to capitalize and amortize incremental direct leasing costs. As a result, we have concluded that upon the adoption of the standard, we will be required to expense as incurred certain leasing costs we are currently able to capitalize and amortize as deferred leasing costs under existing guidance. We continue to evaluate the impact of this change in the guidance and we currently expect this change will have a material impact to the Company’s consolidated financial statements and results of operations upon adoption of the standard on January 1, 2019.

For leases where we are the lessee, specifically for our ground leases, the adoption of the standard will significantly change the accounting on our consolidated balance sheets since both existing ground leases and any future ground leases will be required to be recorded on the Company’s consolidated balance sheets as an obligation of the Company. Existing ground leases executed before the January 1, 2019 adoption date will continue to be accounted for as operating leases and the new guidance will not have a material impact on our recognition of ground lease expense or our results of operations. However, we will be required to recognize a right of use asset and a lease liability on our consolidated balance sheets equal to the present value of the minimum lease payments required in accordance with each ground lease. As of September 30, 2018, our future undiscounted minimum rental payments under these leases totaled$248.6 million, with several of the leases containing provisions for rental payments to fluctuate based on fair market value and operating income measurements with expirations through 2093. In addition, we currently believe that for new ground leases entered into after the adoption date of the new standard, such leases could be required to be accounted for as financing type leases, resulting in ground lease expense recorded using the effective interest method instead of on a straight-line basis over the term of the lease. This could have a significant impact on our results of operations if we enter into material new ground leases after the date of adoption since ground lease expense calculated using the effective interest method results in an increased amount of ground lease expense in the earlier years of a ground lease as compared to the current straight-line method.

Accounting Pronouncements Effective in 2020 and Beyond

ASU No. 2016-13 “Financial Instruments - Credit Losses (Topic 326)”

On June 16, 2016, the FASB issued ASU No. 2016-13 (“ASU 2016-13”) to amend the accounting for credit losses for certain financial instruments. Under the new guidance, an entity recognizes its estimate of expected credit losses as an allowance, which the FASB believes will result in more timely recognition of such losses.  In August 2018, the FASB released an exposure draft to amend ASU 2016-03. The proposed amendment would clarify that receivables arising from operating leases are not within the scope of Subtopic 326-20 “Financial Instruments – Credit Losses.” Instead, impairment of receivables arising from operating leases should be accounted for under Subtopic 842-30 “Leases – Lessor.” ASU 2016-13 is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The Company does not currently anticipate that the guidance will have a material impact on the consolidated financial statements or notes to the consolidated financial statements.

ASU No. 2018-13 “Fair Value Measurement (Topic 820)”

On August 28, 2018, the FASB issued ASU No. 2018-13 (“ASU 2018-13”) to amend the disclosure requirements for fair value measurements. The amendments in ASU 2018-13 include new, modified and eliminated disclosure requirements and are the result of a broader disclosure project called FASB Concepts Statement, Conceptual Framework for Financial Reporting - Chapter 8: Notes to Financial Statements, which the Board finalized on August 28, 2018. The Board used the guidance in the Concepts Statement to improve the effectiveness of ASC 820’s disclosure requirements. ASU 2018-13 is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for any eliminated or modified disclosures. The Company currently anticipates that the guidance will not have a significant impact on the disclosures in the notes to the consolidated financial statements.

ASU No. 2018-15 “Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40)”

On August 29, 2018, the FASB issued ASU No. 2018-15 (“ASU 2018-15”) to amend a customer’s accounting for implementation costs incurred in a cloud computing arrangement that is a service contract. ASU 2018-15 aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). ASU 2018-15 is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted, including adoption in any interim period. ASU 2018-15 can be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. The Company is currently evaluating the impact of ASU 2018-15 on the consolidated financial statements and notes to the consolidated financial statements.

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Organization, Ownership and Basis of Presentation (Tables)

9 Months Ended

Sep. 30, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Summary of real estate properties

Our stabilized portfolio of operating properties was comprised of the following properties at September 30, 2018:

	Number of Buildings	Rentable Square Feet (unaudited)	Number of Tenants	Percentage  Occupied (unaudited)		Percentage Leased (unaudited)
Stabilized Office Properties	104	13,891,493	524	93.5	%	96.6	%

	Number of Buildings	Number of Units	2018 Average Occupancy (unaudited)
Stabilized Residential Property	1	200	83.3	%

As of September 30, 2018, the following properties were excluded from our stabilized portfolio. We did not have any redevelopment properties or properties held for sale at September 30, 2018.

	Number of Properties/Projects	Estimated Rentable Square Feet (1) (unaudited)
In-process development projects - tenant improvement (2)	2	1,150,000
In-process development projects - under construction (3)	3	956,000

________________________

(1) Estimated rentable square feet upon completion.

(2) Includes 86,000 square feet of Production, Distribution, and Repair (“PDR”) space at 100 Hooper.

(3) In addition to the estimated office and PDR rentable square feet noted above, development projects under construction also include 120,000 square feet of retail space and 608 residential units.

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Acquisitions (Tables)

9 Months Ended

Sep. 30, 2018

Asset Acquisitions [Abstract]

Schedule of acquisitions

During the nine months ended September 30, 2018, we acquired the three operating properties listed below from an unrelated third party. The acquisition was funded with proceeds from the Company’s unsecured revolving credit facility and unsecured term loan facility.

Property	Date of Acquisition	Number of Buildings	Rentable Square Feet (unaudited)	Purchase Price (in millions) (1)
345, 347 & 349 Oyster Point Boulevard, South San Francisco, CA	January 31, 2018	3	145,530	$	111.0

________________________ 

(1) Excludes acquisition-related costs.

During the nine months ended September 30, 2018, we acquired the following development site, which is located adjacent to the three operating properties we acquired in January 2018, from an unrelated third party. The acquisition was funded with proceeds from the Company’s unsecured revolving credit facility and the Company’s at-the-market stock offering program.

Project	Date of Acquisition	City/Submarket	Type	Purchase Price (in millions) (1)
Kilroy Oyster Point	June 1, 2018	South San Francisco	Land	$	308.2

________________________ 

(1) Excludes acquisition-related costs. In connection with this acquisition, we also recorded $40.6 million in accrued liabilities and environmental remediation liabilities at the date of acquisition, which are not included in the purchase price above. As of September 30, 2018, the purchase price and assumed liabilities are included in undeveloped land and construction in progress and the assumed liabilities are included in accounts payable, accrued expenses and other liabilities on the Company’s consolidated balance sheets.

Schedule of estimated fair values of the assets acquired and liabilities assumed

The following table summarizes the assets acquired and liabilities assumed as of the date of acquisition, excluding acquisition-related costs:

	Total 2018 Operating Property Acquisitions
Assets
Land and improvements	$	50,928
Buildings and improvements (1)	59,123
Deferred leasing costs and acquisition-related intangible assets (2)	4,470
Total assets acquired	$	114,521
Liabilities
Deferred revenue and acquisition-related intangible liabilities (3)	$	3,521
Total liabilities assumed	3,521
Net assets and liabilities acquired	$	111,000

________________________ 

(1) Represents buildings, building improvements and tenant improvements.

(2) Represents in-place leases (approximately $3.8 million with a weighted average amortization period of 2.6 years) and leasing commissions (approximately $0.7 million with a weighted average amortization period of 3.5 years).

(3) Represents below-market leases (approximately $3.5 million with a weighted average amortization period of 9.8 years).

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Receivables (Tables)

9 Months Ended

Sep. 30, 2018

Receivables [Abstract]

Current receivables, net

Current receivables, net consisted of the following as of September 30, 2018 and December 31, 2017:

	September 30, 2018			December 31, 2017
	(in thousands)
Current receivables	$	21,674		$	19,235
Allowance for uncollectible tenant receivables	(4,155		)	(2,309		)
Current receivables, net	$	17,519		$	16,926

Deferred rent receivables, net

Deferred rent receivables, net consisted of the following as of September 30, 2018 and December 31, 2017:

	September 30, 2018			December 31, 2017
	(in thousands)
Deferred rent receivables	$	265,858		$	249,629
Allowance for deferred rent receivables	(4,855		)	(3,238		)
Deferred rent receivables, net	$	261,003		$	246,391

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Prepaid Expenses and Other Assets, Net (Tables)

9 Months Ended

Sep. 30, 2018

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Prepaid expenses and other assets, net

Prepaid expenses and other assets, net consisted of the following at September 30, 2018 and December 31, 2017:

	September 30, 2018		December 31, 2017
	(in thousands)
Furniture, fixtures and other long-lived assets, net	$	36,717	$	39,686
Notes receivable, net (1)	2,046		19,912
Prepaid expenses & acquisition deposits	33,912		55,108
Total prepaid expenses and other assets, net	$	72,675	$	114,706

________________________ 

(1) During the nine months ended September 30, 2018, a note receivable with a balance of $15.1 million was repaid to the Company. Notes receivable are shown net of a valuation allowance of approximately $2.9 million as of September 30, 2018.

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Secured and Unsecured Debt of the Operating Partnership (Tables) - Kilroy Realty L.P. [Member]

9 Months Ended

Sep. 30, 2018

Debt Instrument [Line Items]

Unsecured revolving credit facility

The following table summarizes the balance and terms of our unsecured revolving credit facility as of September 30, 2018 and December 31, 2017:

	September 30, 2018			December 31, 2017
	(in thousands)
Outstanding borrowings	$	330,000		$	—
Remaining borrowing capacity	420,000			750,000
Total borrowing capacity (1)	$	750,000		$	750,000
Interest rate (2)	3.23		%	2.56		%
Facility fee-annual rate (3)	0.200%
Maturity date	July 2022

________________________

(1) We may elect to borrow, subject to bank approval and obtaining commitments for any additional borrowing capacity, up to an additional $600.0 million under an accordion feature under the terms of the unsecured revolving credit facility and unsecured term loan facility.

(2) Our unsecured revolving credit facility interest rate was calculated based on an annual rate of LIBOR plus 1.000% as of September 30, 2018 and December 31, 2017.

(3) Our facility fee is paid on a quarterly basis and is calculated based on the total borrowing capacity. In addition to the facility fee, we incurred debt origination and legal costs. As of September 30, 2018 and December 31, 2017, $5.0 millionand $6.0 million of unamortized deferred financing costs, respectively, which are included in prepaid expenses and other assets, net on our consolidated balance sheets, remained to be amortized through the maturity date of our unsecured revolving credit facility

The following table summarizes the balance and terms of our unsecured term loan facility as of September 30, 2018 and December 31, 2017:

	September 30, 2018			December 31, 2017
	(in thousands)
Outstanding borrowings	$	150,000		$	—
Remaining borrowing capacity	—			150,000
Total borrowing capacity (1)	$	150,000		$	150,000
Interest rate (2)	3.23		%	2.66		%
Undrawn facility fee-annual rate (3)	0.200%
Maturity date	July 2022

________________________

(1) As of September 30, 2018 and December 31, 2017, $1.0 million and $1.2 million of unamortized deferred financing costs, respectively, remained to be amortized through the maturity date of our unsecured term loan facility.

(2) Our unsecured term loan facility interest rate was calculated based on an annual rate of LIBOR plus 1.100% as of September 30, 2018 and December 31, 2017.

(3) Prior to borrowing the full capacity of our unsecured term loan facility, the undrawn facility fee was calculated based on any unused borrowing capacity and was paid on a quarterly basis.

Schedule of debt maturities

The following table summarizes the stated debt maturities and scheduled amortization payments of our issued and outstanding debt, excluding unamortized debt discounts, premiums and deferred financing costs, as of September 30, 2018:

Year	(in thousands)
Remaining 2018	$	914
2019	76,309
2020	255,137
2021	5,342
2022	485,554
Thereafter	2,068,469
Total (1)	$	2,891,725

________________________

(1) Includes gross principal balance of outstanding debt before the effect of the following at September 30, 2018: $13.3 millionof unamortized deferred financing costs for the unsecured term loan facility, unsecured senior notes and secured debt, $5.7 million of unamortized discounts for the unsecured senior notes and $1.2 million of unamortized premiums for the secured debt.

Capitalized interest and loan fees

The following table sets forth gross interest expense, including debt discount/premium and deferred financing cost amortization, net of capitalized interest, for the three and nine months ended September 30, 2018 and 2017. The interest expense capitalized was recorded as a cost of development and increased the carrying value of undeveloped land and construction in progress.

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
	(in thousands)
Gross interest expense	$	30,231		$	28,331		$	85,834		$	84,577
Capitalized interest and deferred financing costs	(19,156		)	(12,180		)	(48,549		)	(33,101		)
Interest expense	$	11,075		$	16,151		$	37,285		$	51,476

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Stockholders' Equity of the Company (Tables)

9 Months Ended

Sep. 30, 2018

Equity [Abstract]

Common stock under at-the-market offering programs

The following table sets forth information regarding sales of common stock under our at-the-market offering programs for the nine months ended September 30, 2018:

	Nine Months Ended September 30, 2018
	(in millions, except share and per share data)
Shares of common stock sold during the period	1,817,195
Weighted average price per common share	$	73.64
Aggregate gross proceeds	$	133.8
Aggregate net proceeds after selling commissions	$	132.1

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Partners' Capital of the Operating Partnership (Tables)

9 Months Ended

Sep. 30, 2018

Partners' Capital Notes [Abstract]

Schedule of Operating Partnership

The net offering proceeds were contributed by the Company to the Operating Partnership in exchange for common units for the nine months ended September 30, 2018 as follows:

	Nine Months Ended September 30, 2018
	(in millions, except share data)
Shares of common stock contributed by the Company	1,817,195
Common units exchanged for share of common stock by the Company	1,817,195
Aggregate gross proceeds	$	133.8
Aggregate net proceeds after selling commissions	$	132.1

Schedule of Common Units Outstanding

The following table sets forth the number of common units held by the Company and the number of common units held by non-affiliated investors and certain of our executive officers and directors in the form of noncontrolling common units as well as the ownership interest held on each respective date:

	September 30, 2018		December 31, 2017		September 30, 2017
Company owned common units in the Operating Partnership	100,746,988		98,620,333		98,382,256
Company owned general partnership interest	98.0	%	97.9	%	97.9	%
Noncontrolling common units of the Operating Partnership	2,025,287		2,077,193		2,077,193
Ownership interest of noncontrolling interest	2.0	%	2.1	%	2.1	%

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Share-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of share-based payment award, restricted stock units, valuation assumptions

	Fair Value Assumptions
Expected share price volatility	20.00%
Risk-free interest rate	2.37%
Expected life	2.9 years

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Fair Value Measurements and Disclosures (Tables)

9 Months Ended

Sep. 30, 2018

Fair Value Disclosures [Abstract]

Fair value of the company's marketable securities

The following table sets forth the fair value of our marketable securities as of September 30, 2018 and December 31, 2017:

	Fair Value (Level 1) (1)
	September 30, 2018		December 31, 2017
Description	(in thousands)
Marketable securities (2)	$	23,353	$	20,674

________________________

(1) Based on quoted prices in active markets for identical securities.

(2) The marketable securities are held in a limited rabbi trust.

Fair value adjustment of marketable securities and deferred compensation plan liability

The following table sets forth the net gain on marketable securities recorded during the three and nine months ended September 30, 2018 and 2017:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Description	(in thousands)				(in thousands)
Net gain on marketable securities	$	271	$	536	$	289	$	1,719

Carrying value and fair value of company's remaining financial assets and liabilities

The following table sets forth the carrying value and the fair value of our other financial instruments as of September 30, 2018 and December 31, 2017:

	September 30, 2018				December 31, 2017
	Carrying Value		Fair Value (1)		Carrying Value		Fair Value (1)
	(in thousands)
Liabilities
Secured debt, net	$	336,866	$	331,313	$	340,800	$	346,858
Unsecured debt, net	2,207,049		2,173,366		2,006,263		2,077,199
Unsecured line of credit	330,000		330,221		—		—

________________________

(1) Fair value calculated using Level II inputs, which are based on model-derived valuations in which significant inputs and significant value drivers are observable in active markets.

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Net Income Available to Common Stockholders Per Share of the Company (Tables)

9 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Net income available to common stockholders

The following table reconciles the numerator and denominator in computing the Company’s basic and diluted per-share computations for net income available to common stockholders for the three and nine months ended September 30, 2018 and 2017:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
	(in thousands, except share and per share amounts)
Numerator:
Net income attributable to Kilroy Realty Corporation	$	34,400		$	71,110		$	98,195		$	136,083
Total preferred dividends	—			(4,552		)	—			(13,363		)
Allocation to participating securities (1)	(507		)	(501		)	(1,492		)	(1,460		)
Numerator for basic and diluted net income available to common stockholders	$	33,893		$	66,057		$	96,703		$	121,260
Denominator:
Basic weighted average vested shares outstanding	100,676,778			98,352,139			99,711,312			98,008,780
Effect of dilutive securities	551,556			559,473			497,333			582,268
Diluted weighted average vested shares and common share equivalents outstanding	101,228,334			98,911,612			100,208,645			98,591,048
Basic earnings per share:
Net income available to common stockholders per share	$	0.34		$	0.67		$	0.97		$	1.24
Diluted earnings per share:
Net income available to common stockholders per share	$	0.33		$	0.67		$	0.97		$	1.23

________________________

(1) Participating securities include nonvested shares, certain time-based RSUs and vested market measure-based RSUs.

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Net Income Available to Common Unitholders Per Unit of the Operating Partnership (Tables)

9 Months Ended

Sep. 30, 2018

Net Income Available To Common Unitholders [Line Items]

Net income (loss) available to common unitholders

The following table reconciles the numerator and denominator in computing the Company’s basic and diluted per-share computations for net income available to common stockholders for the three and nine months ended September 30, 2018 and 2017:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
	(in thousands, except share and per share amounts)
Numerator:
Net income attributable to Kilroy Realty Corporation	$	34,400		$	71,110		$	98,195		$	136,083
Total preferred dividends	—			(4,552		)	—			(13,363		)
Allocation to participating securities (1)	(507		)	(501		)	(1,492		)	(1,460		)
Numerator for basic and diluted net income available to common stockholders	$	33,893		$	66,057		$	96,703		$	121,260
Denominator:
Basic weighted average vested shares outstanding	100,676,778			98,352,139			99,711,312			98,008,780
Effect of dilutive securities	551,556			559,473			497,333			582,268
Diluted weighted average vested shares and common share equivalents outstanding	101,228,334			98,911,612			100,208,645			98,591,048
Basic earnings per share:
Net income available to common stockholders per share	$	0.34		$	0.67		$	0.97		$	1.24
Diluted earnings per share:
Net income available to common stockholders per share	$	0.33		$	0.67		$	0.97		$	1.23

________________________

(1) Participating securities include nonvested shares, certain time-based RSUs and vested market measure-based RSUs.

Kilroy Realty L.P. [Member]

Net Income Available To Common Unitholders [Line Items]

Net income (loss) available to common unitholders

The following table reconciles the numerator and denominator in computing the Operating Partnership’s basic and diluted per-unit computations for net income available to common unitholders for the three and nine months ended September 30, 2018 and 2017:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
	(in thousands, except unit and per unit amounts)
Numerator:
Net income attributable to Kilroy Realty, L.P.	$	34,993		$	72,402		$	99,901		$	138,427
Total preferred distributions	—			(4,552		)	—			(13,363		)
Allocation to participating securities (1)	(507		)	(501		)	(1,492		)	(1,460		)
Numerator for basic and diluted net income available to common unitholders	$	34,486		$	67,349		$	98,409		$	123,604
Denominator:
Basic weighted average vested units outstanding	102,721,806			100,429,332			101,773,540			100,160,595
Effect of dilutive securities	551,556			559,473			497,333			582,268
Diluted weighted average vested units and common unit equivalents outstanding	103,273,362			100,988,805			102,270,873			100,742,863
Basic earnings per unit:
Net income available to common unitholders per unit	$	0.34		$	0.67		$	0.97		$	1.23
Diluted earnings per unit:
Net income available to common unitholders per unit	$	0.33		$	0.67		$	0.96		$	1.23

________________________

(1) Participating securities include nonvested shares, certain time-based RSUs and vested market measure-based RSUs.

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Supplemental Cash Flow Information of the Company (Tables)

9 Months Ended

Sep. 30, 2018

Supplemental Cash Flow Elements [Abstract]

Schedule of supplemental cash flows

Supplemental cash flow information is included as follows (in thousands):

	Nine Months Ended September 30,
	2018		2017
SUPPLEMENTAL CASH FLOWS INFORMATION:
Cash paid for interest, net of capitalized interest of $46,761 and $31,880 as of September 30, 2018 and 2017, respectively	$	32,175	$	46,878
NON-CASH INVESTING TRANSACTIONS:
Accrual for expenditures for operating properties and development properties	$	142,133	$	104,409
Assumption of accrued liabilities in connection with acquisitions (Note 2)	$	40,624	$	—
Tenant improvements funded directly by tenants	$	7,211	$	10,361
NON-CASH FINANCING TRANSACTIONS:
Accrual of dividends and distributions payable to common stockholders and common unitholders	$	47,411	$	43,324
Exchange of common units of the Operating Partnership into shares of the Company’s common stock	$	1,962	$	10,939

Reconciliation of cash and cash equivalents and restricted cash

The following is a reconciliation of our cash and cash equivalents and restricted cash at the beginning and end of the nine months ended September 30, 2018 and 2017.

	Nine Months Ended September 30,
	2018		2017
RECONCILIATION OF CASH AND CASH EQUIVALENTS AND RESTRICTED CASH:
Cash and cash equivalents at beginning of period	$	57,649	$	193,418
Restricted cash at beginning of period	9,149		56,711
Cash and cash equivalents and restricted cash at beginning of period	$	66,798	$	250,129
Cash and cash equivalents at end of period	$	86,517	$	64,954
Restricted cash at end of period	—		179,276
Cash and cash equivalents and restricted cash at end of period	$	86,517	$	244,230

Reconciliation of cash and cash equivalents and restricted cash

The following is a reconciliation of our cash and cash equivalents and restricted cash at the beginning and end of the nine months ended September 30, 2018 and 2017.

	Nine Months Ended September 30,
	2018		2017
RECONCILIATION OF CASH AND CASH EQUIVALENTS AND RESTRICTED CASH:
Cash and cash equivalents at beginning of period	$	57,649	$	193,418
Restricted cash at beginning of period	9,149		56,711
Cash and cash equivalents and restricted cash at beginning of period	$	66,798	$	250,129
Cash and cash equivalents at end of period	$	86,517	$	64,954
Restricted cash at end of period	—		179,276
Cash and cash equivalents and restricted cash at end of period	$	86,517	$	244,230

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Supplemental Cash Flow Information of the Operating Partnership (Tables)

9 Months Ended

Sep. 30, 2018

Other Significant Noncash Transactions [Line Items]

Schedule of supplemental cash flows

Supplemental cash flow information is included as follows (in thousands):

	Nine Months Ended September 30,
	2018		2017
SUPPLEMENTAL CASH FLOWS INFORMATION:
Cash paid for interest, net of capitalized interest of $46,761 and $31,880 as of September 30, 2018 and 2017, respectively	$	32,175	$	46,878
NON-CASH INVESTING TRANSACTIONS:
Accrual for expenditures for operating properties and development properties	$	142,133	$	104,409
Assumption of accrued liabilities in connection with acquisitions (Note 2)	$	40,624	$	—
Tenant improvements funded directly by tenants	$	7,211	$	10,361
NON-CASH FINANCING TRANSACTIONS:
Accrual of dividends and distributions payable to common stockholders and common unitholders	$	47,411	$	43,324
Exchange of common units of the Operating Partnership into shares of the Company’s common stock	$	1,962	$	10,939

Reconciliation of cash and cash equivalents and restricted cash

The following is a reconciliation of our cash and cash equivalents and restricted cash at the beginning and end of the nine months ended September 30, 2018 and 2017.

	Nine Months Ended September 30,
	2018		2017
RECONCILIATION OF CASH AND CASH EQUIVALENTS AND RESTRICTED CASH:
Cash and cash equivalents at beginning of period	$	57,649	$	193,418
Restricted cash at beginning of period	9,149		56,711
Cash and cash equivalents and restricted cash at beginning of period	$	66,798	$	250,129
Cash and cash equivalents at end of period	$	86,517	$	64,954
Restricted cash at end of period	—		179,276
Cash and cash equivalents and restricted cash at end of period	$	86,517	$	244,230

Reconciliation of cash and cash equivalents and restricted cash

The following is a reconciliation of our cash and cash equivalents and restricted cash at the beginning and end of the nine months ended September 30, 2018 and 2017.

	Nine Months Ended September 30,
	2018		2017
RECONCILIATION OF CASH AND CASH EQUIVALENTS AND RESTRICTED CASH:
Cash and cash equivalents at beginning of period	$	57,649	$	193,418
Restricted cash at beginning of period	9,149		56,711
Cash and cash equivalents and restricted cash at beginning of period	$	66,798	$	250,129
Cash and cash equivalents at end of period	$	86,517	$	64,954
Restricted cash at end of period	—		179,276
Cash and cash equivalents and restricted cash at end of period	$	86,517	$	244,230

Kilroy Realty L.P. [Member]

Other Significant Noncash Transactions [Line Items]

Schedule of supplemental cash flows

Supplemental cash flow information is included as follows (in thousands):

	Nine Months Ended September 30,
	2018		2017
SUPPLEMENTAL CASH FLOWS INFORMATION:
Cash paid for interest, net of capitalized interest of $46,761 and $31,880 as of September 30, 2018 and 2017, respectively	$	32,175	$	46,878
NON-CASH INVESTING TRANSACTIONS:
Accrual for expenditures for operating properties and development properties	$	142,133	$	104,409
Assumption of accrued liabilities in connection with acquisitions (Note 2)	$	40,624	$	—
Tenant improvements funded directly by tenants	$	7,211	$	10,361
NON-CASH FINANCING TRANSACTIONS:
Accrual of distributions payable to common unitholders	$	47,411	$	43,324

Reconciliation of cash and cash equivalents and restricted cash

The following is a reconciliation of our cash and cash equivalents and restricted cash at the beginning and end of the nine months ended September 30, 2018 and 2017.

	Nine Months Ended September 30,
	2018		2017
RECONCILIATION OF CASH AND CASH EQUIVALENTS AND RESTRICTED CASH:
Cash and cash equivalents at beginning of period	$	57,649	$	193,418
Restricted cash at beginning of period	9,149		56,711
Cash and cash equivalents and restricted cash at beginning of period	$	66,798	$	250,129
Cash and cash equivalents at end of period	$	86,517	$	64,954
Restricted cash at end of period	—		179,276
Cash and cash equivalents and restricted cash at end of period	$	86,517	$	244,230

Reconciliation of cash and cash equivalents and restricted cash

The following is a reconciliation of our cash and cash equivalents and restricted cash at the beginning and end of the nine months ended September 30, 2018 and 2017.

	Nine Months Ended September 30,
	2018		2017
RECONCILIATION OF CASH AND CASH EQUIVALENTS AND RESTRICTED CASH:
Cash and cash equivalents at beginning of period	$	57,649	$	193,418
Restricted cash at beginning of period	9,149		56,711
Cash and cash equivalents and restricted cash at beginning of period	$	66,798	$	250,129
Cash and cash equivalents at end of period	$	86,517	$	64,954
Restricted cash at end of period	—		179,276
Cash and cash equivalents and restricted cash at end of period	$	86,517	$	244,230

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Organization, Ownership and Basis of Presentation (Details) - Sep. 30, 2018	ft²	Total	tenant	building	number_of_residential_units	project	property
Stabilized office properties [Member]
Real Estate Properties [Line Items]
Number of Buildings				104			4
Rentable Square Feet (unaudited)	13,891,493
Number of Tenants | tenant			524
Percentage Occupied (unaudited)		93.50%
Percentage Leased (unaudited)		96.60%
Stabilized residential properties [Member]
Real Estate Properties [Line Items]
Number of Buildings | building				1
Percentage Occupied (unaudited)		83.30%
Number of Units | building				200
In-process development projects - tenant improvement [Member]
Real Estate Properties [Line Items]
Number of Buildings | project						2
Rentable Square Feet (unaudited)	1,150,000
In-process development projects - under construction [Member]
Real Estate Properties [Line Items]
Number of Buildings | project						3
Rentable Square Feet (unaudited)	956,000
Number of residential units | number_of_residential_units					608
Retail site [Member] | In-process development projects - under construction [Member]
Real Estate Properties [Line Items]
Rentable Square Feet (unaudited)	120,000
Retail site [Member] | Production, Distribution and Repair (PDR) [Member]
Real Estate Properties [Line Items]
Rentable Square Feet (unaudited)	86,000

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Organization, Ownership and Basis of Presentation (Details Textual) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018 USD ($) VIE	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2018 building	Sep. 30, 2018 VIE	Sep. 30, 2018 property_partnership	Sep. 30, 2018 project	Sep. 30, 2018 a	Sep. 30, 2018 property	Dec. 31, 2017 USD ($) VIE
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Lease-up properties occupancy percentage			95.00%
Lease-up properties occupancy duration			1 year
Common limited partnership interest in the Operating Partnership	2.00%	2.10%	2.00%	2.10%								2.10%
Number of VIEs | VIE							5					2
Number of entities, increase (decrease) | VIE	3
VIE assets					$ 828,300							$ 426,500
VIE liabilities					86,200							27,300
Noncontrolling interest in VIE					193,675							181,575
Ground leases, future minimum payments receivable					248,600
San Francisco, California [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Number of Buildings | building						1
Office properties [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Number of Buildings						104					4
Area of land | a										80
Office properties [Member] | Washington [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Number of Buildings | property											12
Development properties [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Number of Buildings | project									3
Number of property partnerships | property_partnership								3
Development properties [Member] | Washington [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Number of Buildings | property											1
Development sites [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Number of Buildings | project									7
Properties and development projects [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Property ownership percentage			100.00%
Real estate investment [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
VIE assets					753,800							382,100
Fixed-price contract [Member] | Parking revenue [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Revenue	$ 6,700	$ 6,600	$ 20,200	$ 20,300
101 First LLC and 303 Second LLC [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Common general partnership interest in the Operating Partnership	56.00%		56.00%
Noncontrolling interest in VIE					$ 187,600							$ 175,400
101 First LLC and 303 Second LLC [Member] | Development properties [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Number of property partnerships | property_partnership								2
Redwood LLC [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Number of Buildings | building						2
Common general partnership interest in the Operating Partnership	93.00%		93.00%
Kilroy Realty Finance, Inc. [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Common general partnership interest in the Finance Partnership (percentage)			1.00%
Kilroy Realty L.P. [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Percentage of limited partnership interest owned by Operating Partnership			99.00%

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Acquisitions (Details) $ in Thousands			9 Months Ended
	Jun. 01, 2018 USD ($)	Jan. 31, 2018 USD ($) ft²	Sep. 30, 2018 USD ($) building
Assets
Land and improvements			$ 50,928
Buildings and improvements			59,123
Deferred leasing costs and acquisition-related intangible assets			4,470
Total assets acquired			114,521
Liabilities
Deferred revenue and acquisition-related intangible liabilities (3)			3,521
Total liabilities assumed			3,521
Net assets and liabilities acquired			111,000
Below market lease, acquired			$ 3,500
Acquired finite lived intangible liabilities weighted average useful life			9 years 9 months
In-place leases [Member]
Assets
Deferred leasing costs and acquisition-related intangible assets			$ 3,800
Liabilities
Acquired finite-lived intangible assets, weighted average useful life			2 years 7 months
Deferred leasing costs and acquisition-related intangible assets, net [Member]
Assets
Deferred leasing costs and acquisition-related intangible assets			$ 700
Liabilities
Acquired finite-lived intangible assets, weighted average useful life			3 years 6 months
345, 347 & 349 Oyster Point Boulevard, South San Francisco, CA [Member]
Schedule of Asset Acquisitions, by Acquisition [Line Items]
Number of Buildings | building			3
Rentable Square Feet (unaudited) | ft²		145,530
Purchase Price (in millions)		$ 111,000
Kilroy Oyster Point [Member]
Schedule of Asset Acquisitions, by Acquisition [Line Items]
Purchase Price (in millions)	$ 308,200
Liabilities
Total liabilities assumed	$ 40,600

XML

Receivables (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current Receivables, net
Current receivables	$ 21,674	$ 19,235
Allowance for uncollectible tenant receivables	(4,155)	(2,309)
Current receivables, net	17,519	16,926
Deferred Rent Receivables, net
Deferred rent receivables	265,858	249,629
Allowance for deferred rent receivables	(4,855)	(3,238)
Deferred rent receivables, net	$ 261,003	$ 246,391

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Prepaid Expenses and Other Assets, Net (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Furniture, fixtures and other long-lived assets, net	$ 36,717	$ 39,686
Note receivable	2,046	19,912
Prepaid expenses & acquisition deposits	33,912	55,108
Total prepaid expenses and other assets, net	72,675	$ 114,706
Proceeds received from repayment of note receivable (Note 3)	15,100
Notes receivable, valuation allowance	$ 2,900

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Secured and Unsecured Debt of the Operating Partnership - Unsecured Senior Notes - Private Placement (Details) - Kilroy Realty L.P. [Member] - USD ($)		9 Months Ended
	May 11, 2018	Sep. 30, 2018
Debt Instrument [Line Items]
Long-term debt, gross		$ 2,891,725,000
Unsecured debt [Member] | 4.30% Series A Senior Note
Debt Instrument [Line Items]
Debt, principal	$ 50,000,000	0
Debt issuance		0
Stated coupon rate	4.30%
Debt instrument, maturity date	Jul. 18, 2026
Unsecured debt [Member] | 4.35% Series B Senior Note [Member]
Debt Instrument [Line Items]
Debt, principal		0
Debt issuance		$ 0
Long-term debt, gross	$ 200,000,000
Stated coupon rate	4.35%
Debt instrument, maturity date	Oct. 18, 2026
Private placement [Member] | Unsecured debt [Member] | Series A and B Unsecured Senior Notes [Member]
Debt Instrument [Line Items]
Operating partnership, payment percent		5.00%
Operating partnership, total payment percentage		100.00%

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Secured and Unsecured Debt of the Operating Partnership - Unsecured Revolving Credit Facility and Term Loan Facility (Details) - USD ($)	9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Debt Instrument [Line Items]
Borrowings on unsecured debt	$ 120,000,000	$ 0
Terms of the Credit Facility
Outstanding borrowings	330,000,000		$ 0
Kilroy Realty L.P. [Member]
Debt Instrument [Line Items]
Borrowings on unsecured debt	120,000,000	$ 0
Terms of the Credit Facility
Outstanding borrowings	330,000,000		0
Unamortized deferred financing costs	13,300,000
Kilroy Realty L.P. [Member] | Revolving credit facility [Member]
Debt Instrument [Line Items]
Contingent additional borrowings	600,000,000
Terms of the Credit Facility
Outstanding borrowings	330,000,000		0
Remaining borrowing capacity	420,000,000		750,000,000
Total borrowing capacity	$ 750,000,000		$ 750,000,000
Interest rate (percent)	3.23%		2.56%
Facility fee-annual rate (percent)	0.20%		0.20%
Maturity date	Jul. 01, 2022		Jul. 01, 2022
Unamortized deferred financing costs	$ 5,000,000		$ 6,000,000
London Interbank Offered Rate (LIBOR) [Member] | Kilroy Realty L.P. [Member] | Revolving credit facility [Member]
Terms of the Credit Facility
Variable rate (percent)	1.00%		1.00%
$150 Million Term Loan Facility [Member] | Kilroy Realty L.P. [Member] | Line of credit [Member]
Debt Instrument [Line Items]
Increase in borrowings	$ 30,000,000
Borrowings on unsecured debt	120,000,000
Terms of the Credit Facility
Outstanding borrowings	150,000,000		$ 0
Remaining borrowing capacity	$ 0		150,000,000
Total borrowing capacity			$ 150,000,000
Interest rate (percent)	3.23%		2.66%
Undawn facility fee-annual rate (percent)	0.20%		0.20%
Maturity date	Jul. 01, 2022		Jul. 01, 2022
Unamortized deferred financing costs	$ 1,000,000		$ 1,200,000
$150 Million Term Loan Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Kilroy Realty L.P. [Member] | Line of credit [Member]
Terms of the Credit Facility
Variable rate (percent)	1.10%		1.10%

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Secured and Unsecured Debt of the Operating Partnership - Debt Maturities (Details) - Kilroy Realty L.P. [Member] $ in Thousands	Sep. 30, 2018 USD ($)
Stated debt maturities and scheduled amortization payments, excluding debt discounts
Remaining 2018	$ 914
2019	76,309
2020	255,137
2021	5,342
2022	485,554
Thereafter	2,068,469
Total debt	2,891,725
Unamortized deferred financing costs	(13,300)
Unsecured senior notes [Member]
Stated debt maturities and scheduled amortization payments, excluding debt discounts
Unamortized discount	5,700
Secured debt [Member]
Stated debt maturities and scheduled amortization payments, excluding debt discounts
Unamortized premium	$ 1,200

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Secured and Unsecured Debt of the Operating Partnership - Capitalized Interest and Loan Fees (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Capitalized Interest and Loan Fees [Line Items]
Interest expense	$ 11,075	$ 16,151	$ 37,285	$ 51,476
Kilroy Realty L.P. [Member]
Capitalized Interest and Loan Fees [Line Items]
Gross interest expense	30,231	28,331	85,834	84,577
Capitalized interest and deferred financing costs	(19,156)	(12,180)	(48,549)	(33,101)
Interest expense	$ 11,075	$ 16,151	$ 37,285	$ 51,476

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Stockholders' Equity of the Company (Details) - USD ($) $ / shares in Units, $ in Thousands		9 Months Ended
	Aug. 08, 2018	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Class of Stock [Line Items]
Shares issued, value		$ 1,007		$ 986
Common Stock of the Company [Abstract]
Common stock, shares issued (in shares)		100,746,988		98,620,333
Net proceeds from issuance of common stock (Note 6)		$ 130,744	$ 308,812
Prior At-The-Market Program [Member]
Common Stock of the Company [Abstract]
At the market stock offering aggregate gross sales price of common stock		300,000
2018 At-The-Market Program [Member]
Common Stock of the Company [Abstract]
At the market stock offering aggregate gross sales price of common stock		$ 500,000
Issuance of Equity - at the market offering [Member]
Common Stock of the Company [Abstract]
Weighted average price per common share (in dollars per share)		$ 73.64
Common Stock [Member] | 2018 At-The-Market Program [Member]
Common Stock of the Company [Abstract]
At the market stock offering remaining amount available for issuance		$ 466,200
Common stock, shares issued (in shares)		447,466
Forward equity sale
Class of Stock [Line Items]
Shares issued, value	$ 360,500
Price per share (in dollars per share)	$ 72.10
Forward equity sale | Common Stock [Member]
Class of Stock [Line Items]
Number of shares issued (in shares)	5,000,000

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Noncontrolling Interests on the Company's Consolidated Financial Statements - Common Units of the Operating Partnership (Details) $ / shares in Units, $ in Millions	9 Months Ended
	Sep. 30, 2018 USD ($) trading_day $ / shares shares	Dec. 31, 2017 USD ($) $ / shares shares	Sep. 30, 2017 shares
Noncontrolling Interest [Line Items]
Common limited partnership interest in the Operating Partnership	2.00%	2.10%	2.10%
Common stock, par value (in dollars per share) | $ / shares	$ 0.01	$ 0.01
Number of trading days | trading_day	10
Aggregate value upon redemption of outstanding noncontrolling common units | $	$ 143.4	$ 154.5
Kilroy Realty L.P. [Member] | Common units [Member]
Noncontrolling Interest [Line Items]
Common units outstanding held by common limited partners | shares	2,025,287	2,077,193	2,077,193
Operating Partnership [Member]
Noncontrolling Interest [Line Items]
Common general partnership interest in the Operating Partnership	98.00%	97.90%	97.90%

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Partners' Capital of the Operating Partnership - OP Common Units (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Class of Stock [Line Items]
Common stock, shares issued (in shares)	100,746,988		98,620,333
Net proceeds from issuance of common units (Note 8)	$ 130,744	$ 308,812
Kilroy Realty L.P. [Member]
Class of Stock [Line Items]
Net proceeds from issuance of common units (Note 8)	$ 130,744	$ 308,812
Kilroy Realty L.P. [Member] | Issuance of Equity - at the market offering [Member]
Class of Stock [Line Items]
Common stock, shares issued (in shares)	1,817,195
Common units exchanged for share of common stock by the Company (in units)	1,817,195
At the market stock offering aggregate gross sales price of common units	$ 133,800
Net proceeds from issuance of common units (Note 8)	$ 132,100

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Partners' Capital of the Operating Partnership (Details) - shares	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017
General Partners' Capital Account [Abstract]
Ownership interest of noncontrolling interest	2.00%	2.10%	2.10%
Kilroy Realty L.P. [Member] | Common units [Member]
General Partners' Capital Account [Abstract]
Company owned common units in the Operating Partnership	100,746,988	98,620,333	98,382,256
Noncontrolling common units of the Operating Partnership	2,025,287	2,077,193	2,077,193
Operating Partnership [Member]
General Partners' Capital Account [Abstract]
Company owned general partnership interest	98.00%	97.90%	97.90%

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Share-Based Compensation (Details Textual) $ / shares in Units, $ in Millions			1 Months Ended	2 Months Ended	3 Months Ended		9 Months Ended
	Feb. 14, 2018 USD ($) $ / shares	Jan. 28, 2016 shares	Feb. 28, 2017	Feb. 28, 2018 shares	Sep. 30, 2018 USD ($) plan shares	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) plan shares	Sep. 30, 2017 USD ($)	Jan. 29, 2018 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share-based incentive compensation plans | plan					1		1
Share price | $ / shares									$ 70.37
Share-based compensation expense | $					$ 8.1	$ 6.4	$ 24.7	$ 19.0
Share-based compensation expense capitalized | $					1.5	$ 1.7	5.8	$ 5.4
Share-based compensation not yet recognized | $					$ 24.3		$ 24.3
Share-based compensation not yet recognized period of recognition							1 year 9 months
2018 Performance-Based RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			3 years
Vesting, achievement of pre-set FFO per share goals, percentage of RSUs					100.00%		100.00%
Vesting, Average debt to EBIDTA ratio, percentage of RSUs					50.00%		50.00%
Vesting, Market measure, percentage of RSUs					50.00%		50.00%
Number of shares issuable per RSU		1
Fair value RSUs granted | $	$ 10.8
Grant date fair value (in dollars per share) | $ / shares	$ 70.08
Share price | $ / shares	$ 66.46
Remaining expected life, including future volatility							5 years 10 months
Expected life							2 years 11 months
2018 Time-Based RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			3 years
Right to receive number of shares (in shares)							1
Fair value RSUs granted | $	$ 8.4
Kilroy Realty 2006 Incentive Award Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant					1,800,000		1,800,000
Chief Executive Officer [Member] | Kilroy Realty 2006 Incentive Award Plan [Member] | Market Measure-Based Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted in period				282,038
Chief Executive Officer [Member] | Kilroy Realty 2006 Incentive Award Plan [Member] | 2018 Performance-Based RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted in period				158,205			180,931
Chief Executive Officer [Member] | Kilroy Realty 2006 Incentive Award Plan [Member] | 2018 Time-Based RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted in period				123,833

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Share-Based Compensation (Details) - 2018 Performance-Based RSUs [Member]	9 Months Ended
	Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected share price volatility	20.00%
Risk-free interest rate	2.37%
Expected life	2 years 11 months

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Commitments and Contingencies (Details) $ in Millions	9 Months Ended
	Sep. 30, 2018 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Commitments	$ 776.5
Environmental matters [Member]
Site Contingency [Line Items]
Accrued environmental remediation liabilities	$ 79.6
Minimum [Member] | Environmental matters [Member]
Site Contingency [Line Items]
Complete remediation time frame	one
Maximum [Member] | Environmental matters [Member]
Site Contingency [Line Items]
Complete remediation time frame	five

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Fair Value Measurements and Disclosures (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Fair value adjustment of marketable securities and deferred compensation plan liability
Net gain on marketable securities	$ 271	$ 536	$ 289	$ 1,719
Fair value, measurements, recurring [Member] | Fair value (Level 1) [Member]
Assets and Liabilities Reported at Fair Value
Marketable securities	$ 23,353		$ 23,353		$ 20,674

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Fair Value Measurements and Disclosures (Details 1) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Carrying value [Member] | Secured debt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt, net	$ 336,866	$ 340,800
Carrying value [Member] | Unsecured debt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt, net	2,207,049	2,006,263
Carrying value [Member] | Line of credit [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt, net	330,000	0
Fair value (level 2) [Member] | Fair value [Member] | Secured debt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt, net	331,313	346,858
Fair value (level 2) [Member] | Fair value [Member] | Unsecured debt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt, net	2,173,366	2,077,199
Fair value (level 2) [Member] | Fair value [Member] | Line of credit [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt, net	$ 330,221	$ 0

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Other Significant Events (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018 USD ($) tenant	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) tenant	Sep. 30, 2017 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provision for bad debts	$ 1,338	$ 1,036	$ 6,714	$ 2,743
Tenant One [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provisions for bad debts, increase (decrease)	$ 7,000
Number of tenants | tenant	1		1

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Net Income Available to Common Stockholders Per Share of the Company (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Numerator:
Net income attributable to Kilroy Realty Corporation	$ 34,400	$ 71,110	$ 98,195	$ 136,083
Total preferred dividends	0	(4,552)	0	(13,363)
Allocation to participating securities	(507)	(501)	(1,492)	(1,460)
Numerator for basic and diluted net income available to common stockholders	$ 33,893	$ 66,057	$ 96,703	$ 121,260
Denominator:
Basic weighted average vested shares outstanding (in shares)	100,676,778	98,352,139	99,711,312	98,008,780
Effect of dilutive securities (in shares)	551,556	559,473	497,333	582,268
Diluted weighted average vested shares and common share equivalents outstanding (in shares)	101,228,334	98,911,612	100,208,645	98,591,048
Basic earnings per share:
Net income available to common stockholders per share (in dollars per share)	$ 0.34	$ 0.67	$ 0.97	$ 1.24
Diluted earnings per share:
Net income available to common stockholders per share (in dollars per share)	$ 0.33	$ 0.67	$ 0.97	$ 1.23

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Net Income Available to Common Unitholders Per Unit of the Operating Partnership (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Numerator:
Net income attributable to Kilroy Realty, L.P.	$ 34,400	$ 71,110	$ 98,195	$ 136,083
Total preferred dividends	0	(4,552)	0	(13,363)
Allocation to participating securities	(507)	(501)	(1,492)	(1,460)
Numerator for basic and diluted net income available to common stockholders	$ 33,893	$ 66,057	$ 96,703	$ 121,260
Denominator:
Basic weighted average vested shares outstanding (in shares)	100,676,778	98,352,139	99,711,312	98,008,780
Effect of dilutive securities (in units)	551,556	559,473	497,333	582,268
Diluted weighted average vested shares and common share equivalents outstanding (in shares)	101,228,334	98,911,612	100,208,645	98,591,048
Basic earnings per unit:
Net income available to common stockholders per share (in dollars per share)	$ 0.34	$ 0.67	$ 0.97	$ 1.24
Diluted earnings per unit:
Net income available to common stockholders per share (in dollars per share)	$ 0.33	$ 0.67	$ 0.97	$ 1.23
Kilroy Realty L.P. [Member]
Numerator:
Net income attributable to Kilroy Realty, L.P.	$ 34,993	$ 72,402	$ 99,901	$ 138,427
Total preferred dividends	0	(4,552)	0	(13,363)
Allocation to participating securities	(507)	(501)	(1,492)	(1,460)
Numerator for basic and diluted net income available to common stockholders	$ 34,486	$ 67,349	$ 98,409	$ 123,604
Denominator:
Basic weighted average vested shares outstanding (in shares)	102,721,806	100,429,332	101,773,540	100,160,595
Effect of dilutive securities (in units)	551,556	559,473	497,333	582,268
Diluted weighted average vested shares and common share equivalents outstanding (in shares)	103,273,362	100,988,805	102,270,873	100,742,863
Basic earnings per unit:
Net income available to common stockholders per share (in dollars per share)	$ 0.34	$ 0.67	$ 0.97	$ 1.23
Diluted earnings per unit:
Net income available to common stockholders per share (in dollars per share)	$ 0.33	$ 0.67	$ 0.96	$ 1.23

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Supplemental Cash Flow Information of the Company (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
SUPPLEMENTAL CASH FLOWS INFORMATION:
Cash paid for interest, net of capitalized interest of $46,761 and $31,880 as of September 30, 2018 and 2017, respectively	$ 32,175	$ 46,878
Interest capitalized	46,761	31,880
NON-CASH INVESTING TRANSACTIONS:
Accrual for expenditures for operating properties and development properties	142,133	104,409
Assumption of accrued liabilities in connection with acquisitions (Note 2)	40,624	0
Tenant improvements funded directly by tenants	7,211	10,361
NON-CASH FINANCING TRANSACTIONS:
Accrual of dividends and distributions payable to common stockholders and common unitholders	47,411	43,324
Exchange of common units of the Operating Partnership into shares of the Company’s common stock	$ 1,962	$ 10,939

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Supplemental Cash Flow Information of the Company - Reconciliation of cash and cash equivalents and restricted cash (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Supplemental Cash Flow Elements [Abstract]
Cash and cash equivalents	$ 86,517	$ 57,649	$ 64,954	$ 193,418
Restricted cash	0	9,149	179,276	56,711
Cash and cash equivalents and restricted cash	$ 86,517	$ 66,798	$ 244,230	$ 250,129

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Supplemental Cash Flow Information of the Operating Partnership (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
SUPPLEMENTAL CASH FLOWS INFORMATION:
Cash paid for interest, net of capitalized interest of $46,761 and $31,880 as of September 30, 2018 and 2017, respectively	$ 32,175	$ 46,878
Interest capitalized	46,761	31,880
NON-CASH INVESTING TRANSACTIONS:
Accrual for expenditures for operating properties and development properties	142,133	104,409
Assumption of accrued liabilities in connection with acquisitions (Note 2)	40,624	0
Tenant improvements funded directly by tenants	7,211	10,361
NON-CASH FINANCING TRANSACTIONS:
Accrual of distributions payable to common unitholders	47,411	43,324
Kilroy Realty L.P. [Member]
SUPPLEMENTAL CASH FLOWS INFORMATION:
Cash paid for interest, net of capitalized interest of $46,761 and $31,880 as of September 30, 2018 and 2017, respectively	32,175	46,878
Interest capitalized	46,761	31,880
NON-CASH INVESTING TRANSACTIONS:
Accrual for expenditures for operating properties and development properties	142,133	104,409
Assumption of accrued liabilities in connection with acquisitions (Note 2)	40,624	0
Tenant improvements funded directly by tenants	7,211	10,361
NON-CASH FINANCING TRANSACTIONS:
Accrual of distributions payable to common unitholders	$ 47,411	$ 43,324

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Supplemental Cash Flow Information of the Operating Partnership - Reconciliation of cash and cash equivalents and restricted cash (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Other Significant Noncash Transactions [Line Items]
Cash and cash equivalents	$ 86,517	$ 57,649	$ 64,954	$ 193,418
Restricted cash	0	9,149	179,276	56,711
Cash and cash equivalents and restricted cash	86,517	66,798	244,230	250,129
Kilroy Realty L.P. [Member]
Other Significant Noncash Transactions [Line Items]
Cash and cash equivalents	86,517	57,649	64,954	193,418
Restricted cash	0	9,149	179,276	56,711
Cash and cash equivalents and restricted cash	$ 86,517	$ 66,798	$ 244,230	$ 250,129

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Subsequent Events (Details) - USD ($)		9 Months Ended
	Oct. 17, 2018	Sep. 30, 2018	Sep. 30, 2017	Oct. 26, 2018	Oct. 22, 2018	May 11, 2018	Dec. 31, 2017
Subsequent Event [Line Items]
Payment of dividend		$ 132,639,000	$ 297,993,000
Outstanding borrowings		330,000,000					$ 0
Subsequent event [Member]
Subsequent Event [Line Items]
Payment of dividend	$ 47,400,000
Kilroy Realty L.P. [Member]
Subsequent Event [Line Items]
Payment of dividend		132,639,000	$ 297,993,000
Outstanding borrowings		330,000,000					0
Kilroy Realty L.P. [Member] | Unsecured debt [Member] | 4.35% Series B Senior Note [Member]
Subsequent Event [Line Items]
Debt, principal		0
Stated coupon rate						4.35%
Kilroy Realty L.P. [Member] | Unsecured debt [Member] | 4.35% Series B Senior Note [Member] | Subsequent event [Member]
Subsequent Event [Line Items]
Debt, principal					$ 200,000,000.0
Stated coupon rate					4.35%
Kilroy Realty L.P. [Member] | Revolving credit facility [Member]
Subsequent Event [Line Items]
Outstanding borrowings		$ 330,000,000					$ 0
Kilroy Realty L.P. [Member] | Revolving credit facility [Member] | Subsequent event [Member]
Subsequent Event [Line Items]
Outstanding borrowings				$ 165,000,000.0